WO2010089870A1 - Fastener element for concealed slide fasteners - Google Patents

Fastener element for concealed slide fasteners Download PDF

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Publication number
WO2010089870A1
WO2010089870A1 PCT/JP2009/051969 JP2009051969W WO2010089870A1 WO 2010089870 A1 WO2010089870 A1 WO 2010089870A1 JP 2009051969 W JP2009051969 W JP 2009051969W WO 2010089870 A1 WO2010089870 A1 WO 2010089870A1
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WO
WIPO (PCT)
Prior art keywords
fastener
tape
meshing
fastener element
slide fastener
Prior art date
Application number
PCT/JP2009/051969
Other languages
French (fr)
Japanese (ja)
Inventor
昌芳 小島
Original Assignee
Ykk株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ykk株式会社 filed Critical Ykk株式会社
Priority to CN200980156304.4A priority Critical patent/CN102307491B/en
Priority to PCT/JP2009/051969 priority patent/WO2010089870A1/en
Priority to JP2010549310A priority patent/JP5501255B2/en
Priority to TW098122137A priority patent/TWI391103B/en
Publication of WO2010089870A1 publication Critical patent/WO2010089870A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/02Slide fasteners with a series of separate interlocking members secured to each stringer tape
    • A44B19/08Stringers arranged side-by-side when fastened, e.g. at least partially superposed stringers
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/34Stringer tapes; Flaps secured to stringers for covering the interlocking members

Definitions

  • the present invention relates to a fastener element for a hidden slide fastener in which a meshing element becomes invisible from the tape surface when meshed with a fastener element (hereinafter simply referred to as an element) attached along one edge of a pair of fastener tapes. And a hidden slide fastener lined up on an element mounting edge of a fastener tape in which the element is bent in a U shape.
  • a fastener element used for this type of hidden slide fastener is formed along an element mounting edge portion in which a core string portion is provided at one end edge of a fastener tape by injection molding of synthetic resin or die casting of zinc alloy or the like. Installed.
  • the element used for this hidden slide fastener has a substantially U-shaped longitudinal section, and the engagement portion of the element formed at one end thereof is mounted toward the inside of the fastener tape.
  • the element attachment edge portion of the fastener tape to which the element is attached is folded back into a U shape, and the shape is fixed with a heat set or the like, and then a slider is inserted through the element row to obtain a hidden slide fastener.
  • a meshing portion is provided at one end of the open end of the U-shaped element.
  • the meshing portion includes a plate-like portion on the tape fixing side, a neck portion integrally formed on a surface opposite to the tape fixing side of the plate-like portion, and extending from the neck portion toward the front of the open end side of the element.
  • a meshing space is formed between the engagement surface excluding the neck portion of the plate-like portion and the peripheral surface of the neck portion and the meshing head portion to be engaged with and disengaged from the other meshing portion.
  • the particularly required function for the hidden slide fastener is not only to ensure a meshing strength that makes it difficult for the element to come off when the required tension is applied in the tape width direction, but also from between the left and right fastener tapes. It has a concealing property that does not look into.
  • products to which hidden slide fasteners are applied have been extremely diversified. That is, the use is not limited to various conventional clothes and bags, but is used for various products such as seat covers for seats of automobiles, trains, airplanes, and the like.
  • the seat cover when a hidden slide fastener is applied to a seat cover of an automobile, the seat cover is usually formed smaller than the outer dimensions of the cushion body.
  • a strong tensile stress is applied to the left and right fastener stringers in the tape length direction and the width direction.
  • the conventional hidden slide fastener is subjected to the strong tensile stress as described above, a problem such as a gap between the left and right fastener tapes or the disengagement of the elements easily occurs.
  • the hidden slide fasteners described in Patent Documents 1 and 2 are also weak against torsional force, pushing force, and the like.
  • the hidden slide fastener sewn on clothing or the like has received torsional force or pushing force.
  • the meshing portion of the element is likely to be deformed or damaged, and cannot be used for a long time.
  • the element of Patent Document 1 is configured such that when the left and right elements are meshed, the side surfaces of the meshing portions are in close contact with each other, so that when the fastener chain is folded, the fastener chain is stiff. There was also a problem that the bending operation could not be performed smoothly due to lack of flexibility.
  • the element of Patent Document 2 only supports both corners in the tape longitudinal direction of the meshing head with the front and rear engagement surfaces of the mating element when the left and right elements are engaged, and is adjacent to the left and right. Since the engagement surfaces of the mating counterpart elements do not come into close contact with each other, the slide fastener can be easily bent in the longitudinal direction, but from the base (main body) of the element through the neck that is narrowed. Since the meshing head protrudes, there is a problem that the meshing head and neck are likely to be deformed or damaged.
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2007-151839
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2007-151839
  • a fastener element for a hidden slide fastener that does not occur and does not deform or break even when subjected to a torsional force or a pushing force.
  • the hidden slide fastener element proposed by the above-mentioned Patent Document 3 includes a C-shaped base portion that holds the core string portion, and extends in substantially the same direction from each tip of the C-shaped base portion, and on each opposing surface thereof.
  • Flat first and second tape clamping portions having first and second tape clamping surfaces for clamping the side edges of the fastener tape, the tip of the C-shaped base, and the second of the second tape clamping portion And a meshing portion integrally formed on the back surface opposite to the tape clamping surface.
  • the meshing portion includes a neck portion integrated with the back surface of the second tape clamping portion, a meshing head projecting from the neck portion beyond the distal end surface of the second tape clamping portion, and a distal end surface of the C-shaped base portion.
  • a plane other than the neck portion on the back surface of the second tape clamping portion constitutes an engagement surface.
  • the characteristic configuration is that the front end surface of the first tape holding portion is formed wider than the front end surface of the second tape holding portion, and more preferably, the engagement surface of the second tape holding portion is It forms in the inclined surface which inclines upward toward the front-end
  • the meshing head of one element is guided by the mating engagement surface so as to be pushed downward, and the meshing position
  • the area where the front end surface of the first tape clamping part presses the fastener tape from the left and right can be increased more than the conventional one. Since it can be pressed stably, even if the hidden slide fastener is subjected to tensile stress, it can effectively prevent the gap between the left and right fastener tapes from being generated, and ensure the excellent concealment of the hidden slide fastener Can do.
  • fragile thread and plastic parts are used for the deployment part of the seat cover that covers the seat seat on which the conventional airbag device is mounted, and can be deployed quickly and reliably at the moment when the airbag is inflated. I am doing so.
  • these fragile threads and plastic parts are used, the appearance of an automobile seat is likely to be impaired.
  • a low stretch fabric is sewn on the back of the skin of the seat seat development. This increases not only the complexity of sheet manufacturing, but also increases the work and material costs.
  • a weak plastic part when the development part of the seat cover is developed, the plastic part is broken and the broken pieces are easily scattered around.
  • the appearance of the seat cover that is attached to the seat of an automobile or the like equipped with an airbag device is ensured in normal appearance, and the airbag is not activated when the airbag device is in operation. It is important that the deployment portion of the seat cover is also deployed at the same time as the expansion and deployment is started, and further, the deployment portion of the seat cover is required to be manufactured at a reasonable cost.
  • the present invention makes use of the advantages of the above-described hidden slide fastener and compensates for the disadvantages, and maintains the good appearance as a seat cover of an automobile seat seat to which an airbag device is mounted. It is an object of the present invention to provide a hidden slide fastener that enables quick and smooth deployment of the deployment portion of the seat cover when the airbag device is operated.
  • the fastener element provided by the present invention has, as a basic configuration, a C-shaped base portion that holds the core string portion and substantially parallel to each tip of the C-shaped base portion.
  • Flat first and second tape clamping portions that extend in the same direction and have first and second tape clamping surfaces that sandwich the side edges of the fastener tape on their respective opposing surfaces; and tips of the C-shaped bases;
  • a meshing portion integrally formed on the back surface of the second tape clamping portion opposite to the second tape clamping surface, and the meshing portion is integrated with the back surface of the second tape clamping portion.
  • a fastener for a hidden slide fastener having a neck portion, a meshing head portion extending from the neck portion beyond the tip surface of the second tape clamping portion, and a shoulder portion comprising the tip surface of the C-shaped base portion
  • the second tape clamping portion Said coupling head side and the other party, and the most important feature that it is formed relatively rotated easily shape around the central portion of the C-shaped base.
  • the ratio value W2 / W1 between the front-rear width dimension W2 of the neck portion in the tape length direction and the front-rear extension width W1 of the meshing head portion in the tape length direction is 0.55-0. 75.
  • a typical aspect of the relatively easily rotatable shape is a side opposite to the second tape clamping surface of the second tape clamping portion.
  • the engagement surface excluding the neck portion on the back surface is from the proximal end of the engagement surface on the C-shaped base side to the intermediate portion that can be in surface contact with the apex portion of the meshing head of the other fastener element.
  • the flat surface is parallel to the lower surface of the tape holding portion, and the bent portion is bent upward from the intermediate portion to the tip.
  • the starting point of the bent surface is in the vicinity of the tip position of the mating head of the mating fastener element when meshing with the mating fastener element.
  • the bent surface may be an inclined surface that is inclined upward or a curved surface that bulges downward.
  • the relatively easy-to-turn shape is a chamfered portion in which a tip ridge line portion of the meshing head is chamfered.
  • the chamfered portion may be formed on an inclined surface or a curved surface that is inclined downward toward the tip of the meshing head.
  • the surface on the opposite side to the second tape clamping portion side of the meshing head is an upper inclined surface or a convex surface that is inclined toward the tip.
  • the shape of a curved surface can also be adopted.
  • the fastener elements are arranged at predetermined intervals along an element attachment edge of a pair of fastener tapes, and the element attachment edge of the fastener tape is substantially U-shaped.
  • the slider is inserted into the fastener element in a folded state.
  • the inventors of the present invention have sought to elucidate the cause of the breakage of such a conventional fastener element through various experiments.
  • the surface contact (surface engagement) between the meshing surface of the meshing head between the meshing fastener elements and the engagement surface on the meshing portion side of the mating second tape clamping portion The tip of the meshing head that is about to disengage between the fastener elements slides on the mating engagement surface and prevents the pivoting movement around the meshing head, It was found that the meshing head and the mating engagement surface were strongly pressed together, and eventually the meshing head and / or the second tape clamping portion were broken.
  • the above-described meshing head can be easily rotated, and the airbag device is secured while maintaining a required meshing strength when in a normal state.
  • the meshing state is easily released at the moment when the inflating and deploying force of the airbag acts on the seat deploying portion.
  • the lateral pulling force in the present invention is desirably in the range of 60 to 200 N / 2.54 cm.
  • the breaking strength of the fastener element varies greatly depending on the material used. For example, PBT and POM have high hardness but are brittle and easily break, but for example PA has low brittleness and is difficult to break.
  • the ratio value W2 / W1 of the front-rear width dimension W2 in the tape width direction of the neck part and the overhanging width W1 in the front-rear direction in the tape width direction of the meshing head is smaller than 0.55. Then, the meshing strength with the mating fastener element becomes high, and when it exceeds 0.75, the mating strength with the mating fastener element becomes extremely low, and in any case, it is not practical.
  • the tip of the engagement head of the mating fastener element is brought into surface contact with the flat surface of the engagement surface on the engagement portion side of the second tape clamping portion and engaged. Is in a state.
  • a strong pulling force that pulls the fastener element apart from the left and right fastener tapes when the airbag starts to inflate for example, the flat surface portion of the engagement surface and the tip portion of the mating fastener element engaged with each other
  • the distal end portion of the meshing head moves to a bent surface following the flat surface, and the meshing head relatively rotates and easily disengages from the engagement surface.
  • the airbag when the airbag is deployed and inflated, the meshing head and the mating engagement surface are easily disengaged, an excessive force is not applied to the meshing head and the engagement surface, the slide fastener opens, The bag can be easily deployed. Accordingly, the fastener element does not break, and the airbag is inflated and deployed at an appropriate timing without timing delay.
  • the bent surface is at the time of normal meshing of the fastener element and at the start of inflation and deployment of the airbag
  • the tip ridge line portion of the meshing head is chamfered, or an upper inclined surface or a convex shape in which the surface on the opposite side of the meshing head to the second tape clamping portion side is inclined upward. Even if it is curved, the meshing head is relatively easy to rotate and is easily detached from the engagement surface.
  • Fastener elements having these configurations are lined up at predetermined intervals along the element attachment edges of a pair of fastener tapes, and the hidden slide fastener that folds the element attachment edges of the fastener tape into a substantially U shape is particularly suitable. It is valid.
  • FIG. 1 is a perspective view of the entire fastener element according to the first embodiment of the present invention as seen from the element exposed side
  • FIG. 2 is a perspective view of the fastener element as seen from the element concealing side
  • FIG. 3 is a side view of the fastener element.
  • FIG. 4 is a side view showing a state in which the fastener element is engaged
  • FIG. 5 is a side view showing a state in which the lateral pulling force of the left and right fastener tapes acts on the engagement fastener element to release the engagement. is there.
  • FIG. 6 is an enlarged cross-sectional view of the main part in FIG.
  • the fastener element 1 has a substantially U-shape as a whole in which the tape side edge mounting groove 10 for mounting the tape side edge of the fastener tape 22 is formed, and holds the core string portion 25 of the fastener tape 22.
  • the engagement portion 5 is provided on the engagement surface 12 side corresponding to the back surface opposite to the sandwiching surface 11.
  • the first tape clamping part 3 and the second tape clamping part 4 are slightly inclined with respect to the C-shaped base part 2 toward the first tape clamping part side, and rise obliquely upward.
  • the tape side edge mounting groove 10 is also inclined in the same direction (hereinafter referred to as “upward”) as a whole.
  • the fastener element 1 of the present embodiment is provided with a circular holding hole 14 for holding the core string portion 25 at a substantially central portion in the vertical direction of the C-shaped base portion 2.
  • the tape side edge mounting groove 10 is formed upward.
  • the 1st tape clamping part 3 and the 2nd tape clamping part 4 which are described in the said patent document 2 for example are connected to the approximate center of the tape side edge part mounting groove
  • the meshing part 5 integrated on the engagement surface 12 side of the second tape clamping part 4 includes an oval meshing head 6, a constricted neck 7, and a partial tip surface of the C-shaped base 2. And a shoulder portion 8.
  • the engagement surfaces 12 are respectively arranged on the left and right sides of the neck portion 7 and the shoulder portion 8, extend from the shoulder portion 8 to the meshing head 6, and project in an eave shape with respect to the neck portion 7 and the shoulder portion 8. .
  • the meshing head 6 extends outward beyond the engagement surface 12 of the second tape clamping portion 4.
  • a meshing space is formed between the meshing head 6, the neck 7, the shoulder 8 and the engagement surface 12.
  • the second tape holding portion 4 particularly the shape of the engagement surface 12 thereof, is the most characteristic.
  • the engagement surface 12 extends from the communicating portion with the circular holding hole 14 constituting the proximal end portion of the tape side edge mounting groove 10 to the meshing head 6.
  • the shape thereof is not simply the same plane as described in Patent Documents 1 and 2 above, but in the intermediate portion 12c between the communication portion and the meshing head 6 from the horizontal surface 12a to the upper inclined surface 12b. It has been switched to.
  • the intermediate portion 12 c corresponds to a portion where only the distal end portion of the mating head 6 is in slight surface contact with the horizontal surface 12 a when meshing with the mating fastener element 1. .
  • the tip of the mating head 6 of the other party is brought into slight surface contact with the horizontal surface 12a when each fastener element 1 is easily moved in the vertical direction by the pushing-up force from the outside when the fastener elements are engaged with each other. This is because it is prevented from moving and is not easily cracked during normal engagement of the hidden slide fastener.
  • the upper inclined surface 12b from the intermediate portion 12c to the tip of the engaging surface 12 is engaged with a strong inflation pressure when the fastener element 1 shown in FIG. 5 functions to smoothly realize the transition to the mesh release state shown in FIG. 5 when acting on the fastener element 1 in the above without causing an excessive burden between the mesh elements.
  • the distal end portion of the mating head 6 slightly faces the horizontal surface 12 a of the second tape clamping portion 4 in the left and right fastener elements 1. They are just touching.
  • the area of this surface contact can be changed depending on the size of the fastener element 1 and cannot be determined uniformly.
  • the hidden slide fastener 21 of the present invention is not shown, for example, in a vehicle seat seat equipped with an airbag device. Even when it is applied to the seat cover, when a normal pulling force is applied to the left and right fastener tapes 22 in the direction in which they are separated from each other, or an external force such as a push-up force against the engaged fastener element 1 is applied. However, it is sufficient if the area is sufficient to hold the fastener element 1 with the horizontal surface 12a of the counterpart second tape holding portion 4 and maintain the meshing posture without breaking it.
  • the tip surface 16 and the meshing head upper surface 13 are connected to the upper surface 13 (FIG. 2) of the meshing head 6 that intersects the tip surface 16 of the second tape holding part 4 at a right angle.
  • a reinforcing portion 9 having a rectangular shape in plan view and a right triangle shape in side view is arranged.
  • the meshing head 6 is provided via the thin neck portion 7 as described above, and the meshing head upper surface 13 and the tip surface 16 intersect at right angles.
  • the reinforcing portion 9 is provided, the strength of the meshing portion 5 can be sufficiently secured. For example, a strong twisting force or pushing force is applied to the fastener element 1 in the meshing state.
  • the entire upper surface of the meshing head 6 can be reinforced, and even if a large inflation pressure is applied by the airbag, it can sufficiently withstand the pressure and easily breaks. I don't have to.
  • this reinforcement part 9 is not made into a rectangular shape by planar view like illustration, and the whole may be made into a triangular pyramid shape.
  • FIG. 3 On the surface of the neck 7 and the meshing head 6 on the opposite side to the second tape clamping portion side, that is, the surface (lower surface) opposite to the surface on which the reinforcing portion 9 is formed, FIG. As shown in FIG. 3, a curved surface 6a that curves toward the tip of the meshing head 6 is formed. Moreover, it can replace with the curved surface 6a and can also be set as the upper inclined surface which inclines upward toward the front-end
  • the hidden slide fastener 21 when the fastener element 1 is in the normal meshing state shown in FIG. 4 is operated, for example, an airbag device (not shown) is started to inflate and deploy, and its strong inflation
  • the fastener element 1 in the meshing state instantaneously shifts to the meshing release state shown in FIG. That is, due to the inflation pressure at the start of inflation of the airbag, a strong pulling force acts in the separating direction of the left and right fastener tapes 22, so that the left and right fastener elements 1 respectively move in the pulling direction of the fastener tape 22 around the core string portion 25. It turns quickly.
  • the tip end portion of the mating head 6 that is slightly in surface contact with the horizontal surface 12a of the second tape holding portion 4 slides on the horizontal surface 12a and instantaneously shifts to the upper inclined surface 12b following the horizontal surface 12a. Then, it is guided on the upper inclined surface 12b in a point contact state with the upper inclined surface 12b and moves without resistance.
  • each fastener element 1 has its center
  • the core string portion 25 as a center is quickly rotated in the pulling direction of the fastener tape 22, and the engagement of each fastener element 1 is easily released.
  • the fastener element 1 rotates, even if the curved surface 6a provided on the lower surface of the meshing head 6 and the upper inclined surface 12b face each other, a wide gap is ensured between the curved surface 6a and the upper inclined surface 12b. During the rotation, interference between the curved surface 6a and the upper inclined surface 12b can be avoided.
  • FIG. 12 shows a modification of the first embodiment.
  • the horizontal surface 12a and the upper inclined surface 12b are not bent and continued, but the intermediate portion 12c that is a bending switching portion between the horizontal surface 12a and the upper inclined surface 12b is not used as a bent surface.
  • the upper inclined surface 12b can be formed as a curved surface bulging downward following the horizontal surface 12a.
  • FIG. 6 shows a second embodiment of the fastener element according to the present invention. Also in the present embodiment, the structure of the main part of the fastener element 1 is not substantially different from that of the first embodiment.
  • the characteristic configuration in the present embodiment is that a relative dimensional relationship between the meshing head 6 and the neck 7 of the fastener element 1 is defined. Therefore, in the following description, the same names and symbols are used for the names and symbols of the portions substantially corresponding to the first embodiment.
  • the engagement portion 5 of the fastener element 1 includes an engagement head 6 that is elliptical in plan view, and a distal end of the C-shaped base 2 that is narrowly tied in the center from the long diameter portion of the engagement head 6.
  • a neck 7 extending to the shoulder 8 of the face and connected to the shoulder 8;
  • the ratio W2 / W1 is smaller than 0.55, the neck 7 is too tight and the lateral pulling strength between the fastener elements becomes high, and the engagement cannot be easily released even by the operation of the airbag device. In addition, an excessive load is applied to the peripheral portion of the meshing portion, and it becomes easy to break.
  • W2 / W1 exceeds 0.75, the neck portion 7 is too tightly bound and the pulling strength between the fastener elements becomes too weak, and even when the airbag device is in operation, the engagement between the fastener elements is easily disengaged. End up.
  • POM is used as the material of the fastener element 1
  • the ratio value W2 / W1 is set to 0.69
  • the lateral pulling strength between the fastener elements is 100 N /
  • the resistance of tearing and unfolding at the unfolded portion of the seat cover (not shown) can be reduced during the operation of the airbag apparatus, and the fastener element can be used in normal use. It is the intensity
  • FIG. 7 and 8 show a fastener element which is a third embodiment of the present invention for a hidden slide fastener, and a state when the fastener element is rotated.
  • the difference from the first and second embodiments is that in the first and second embodiments, the mating head of the other party that is in surface contact with the engagement surface 12 of the second tape clamping part 4 of the other party.
  • the upper surface 13 of FIG. 6 (the upper surface of FIG. 2) is formed in a plane, and the upper surface 13 and the oval peripheral side surface are orthogonal to each other.
  • at least the ridge line portion at the tip of the meshing head 6 is perpendicular to the meshing direction to form the chamfered portion 6b.
  • the chamfered portion 6b may be a curved surface, but may be an inclined surface inclined toward the tip of the meshing head 6 as shown in FIG.
  • the horizontal surface 12a is formed from the base end to the middle of the engagement surface 12 of the second tape holding portion 4 and the upper inclined surface 12b is formed from the middle to the front end.
  • the engagement surface 12 is formed on the same horizontal surface 12a from the proximal end to the distal end.
  • the horizontal surface 12 a of the second tape clamping portion 4 in the left and right fastener elements 1 and the mating head of the other party The surface of the part 6 except the chamfered part 6b is in surface contact with the surface near the half part.
  • the area of this surface contact varies depending on the size of the fastener element 1 and the required engagement strength, and cannot be determined uniformly.
  • the hidden slide fastener 21 of the present invention is for a vehicle equipped with an airbag device, for example.
  • an external force such as a normal pulling force in the direction in which the left and right fastener tapes 22 are separated from each other and a push-up force with respect to the engaged fastener element 1 is applied.
  • the area may be sufficient to hold the fastener element 1 with the horizontal surface 12a of the second tape holding portion 4 of the other party and maintain the meshing posture without breaking it.
  • an airbag device (not shown) is activated, and the airbag starts inflating and deploying.
  • the fastener element 1 in the meshing state immediately shifts to the meshing release state shown in FIG. 8 as in the first and second embodiments. . That is, due to the inflation pressure at the start of inflation of the airbag, a strong pulling force acts in the direction in which the left and right fastener tapes 22 are separated, and the left and right fastener elements 1 rotate in the direction in which the fastener tape 22 is pulled.
  • the fastener element 1 smoothly rotates in the pulling direction of the fastener tape 22 around the central portion of the C-shaped base 2 to release the meshing of the meshing fastener element 1.
  • the first to third embodiments are individually described. However, in the present invention, these embodiments can be appropriately combined.
  • the first embodiment can be combined with the second embodiment, or the upper inclined surface 12b in the first embodiment can be formed, and the chamfered portion 6b can be formed at the top end of the upper surface of the meshing head.
  • the intermediate portion of the engagement surface 12 that is the starting point of the upper inclined surface 12b is used as the second tape. It is good to slightly displace to the front end side of the clamping part 4.
  • all the characteristic configurations of the first to third embodiments may be combined.
  • FIG. 10 is a plan view of the hidden slide fastener 21 according to the present embodiment as viewed from the tape front side
  • FIG. 9 is a rear view of the hidden slide fastener 21 as viewed from the tape rear surface side.
  • the fastener element 1 can be attached to the fastener tape 22 by means conventionally used.
  • a synthetic resin is injection-molded on the element attachment edge of the fastener tape 22 to obtain a predetermined shape.
  • the fastener element 1 made of synthetic resin having the above can be attached to the fastener tape 22.
  • polyacetal, polybutylene terephthalate, nylon or the like can be used as the synthetic resin that is the material of the fastener element 1.
  • the metal fastener element 1 can be attached to the fastener tape 22 by performing die casting of copper alloy, nickel alloy, aluminum or the like.
  • the hidden slide fastener 21 obtained using such a fastener element 1 holds the core string portion 25 of the fastener tape 22 in the circular holding hole 14 of the fastener element 1, and the fastener The element attachment edge of the fastener tape 22 is clamped by the first tape clamping portion 3 and the second tape clamping portion 4 of the element 1.
  • the fastener tape 22 is folded back in a substantially U shape at the tip of the first tape sandwiching portion 3, and the slider 24 is slid to engage the fastener elements 1 attached to the left and right fastener tapes 22 with each other.
  • the folded end surfaces 26 of the fastener tape 22 folded in a substantially U shape are brought into close contact with each other. Thereby, the hidden slide fastener 21 can make the engaged fastener element 1 invisible from the surface side of the fastener tape 22.
  • the hidden slide fastener 21 is a first outer peripheral surface which is a rear end curved surface of the C-shaped base 2 of the fastener element 1 on the first tape clamping portion 3 side and a rear end curved surface of the second tape clamping portion 4 side. Since the 18 and the second outer peripheral surface 19 are respectively cylindrical surfaces, when the slider 24 is slid, interference between the fastener element 1 and the slider 24 can be suppressed and good sliding characteristics can be obtained. Furthermore, the following effects can also be obtained.
  • the fastener element 1 may enter in an inclined posture with respect to the fastener element passage 27 of the slider 24.
  • the fastener element 1 passes through the fastener element passage 27 of the slider 24, the second outer peripheral surface 19 of the fastener element 1 contacts the lower plate 29 of the slider 24, and the first outer peripheral surface 18 is opposite to the slider 24. It slides toward the rear opening side of the slider 24 in contact with the L-shaped flange 30.
  • the second outer peripheral surface 19 is brought into contact with the lower plate 29 of the slider 24, and the first outer peripheral surface 18 is brought into contact with the flange 30 of the slider 24.
  • the fastener element 1 can be rotated in the fastener element passage 27 so that the posture of the fastener element 1 can be tilted to a posture suitable for meshing as shown by the solid line in FIG.
  • the hidden slide fastener 21 of the present embodiment even if the fastener element 1 enters the fastener element passage 27 of the slider 24 in an inappropriate posture for tilting engagement, the fastener element passage By tilting the posture of the fastener element 1 within 27, the right and left fastener elements 1 can be surely engaged with each other, and an advantage that a stable engagement state can be secured can be obtained.
  • the second outer peripheral surface 19 of the fastener element 1 has a larger radius of curvature than the first outer peripheral surface 18 as described above. That is, when the fastener element 1 is rotated in the slider 24 as described above and tilted to an appropriate posture for meshing, the second outer peripheral surface 19 is in contact with the slider rather than the first outer peripheral surface 18. Becomes wider. Therefore, since the second outer peripheral surface 19 has a larger radius of curvature than the first outer peripheral surface 18, the fastener element 1 can be smoothly rotated in the fastener element passage 27, and the fastener element 1 can be efficiently used. And can be tilted stably.

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  • Slide Fasteners (AREA)

Abstract

A fastener element for concealed slide fasteners includes a C-shaped root portion (2) having a generally U shape with a groove (10) into which the side edge of a fastener tape (22) is fitted and a circular holding hole (14) defined in the central part thereof for holding a core cord (25), first and second flat tape-holding parts (3, 4) extending from the ends of the C-shaped root portion (2) generally parallel to each other, and a meshing portion (5) formed integrally with the engaging surface (12) of the back surface opposite to the tape holding surface (11) of the second tape-holding part (4). The engaging surface (12) of the back surface of the second tape-holding part (4) and the meshing head part (6) of the mate are so formed as to be easily rotatable relatively around the center of the circular holding hole (14).

Description

隠しスライドファスナー用のファスナーエレメントFastener elements for hidden slide fasteners
  本発明は、一対のファスナーテープの一端縁に沿って取り付けたファスナーエレメント(以下、単にエレメントと略記することがある。)の噛合時に、噛合エレメントがテープ表面から見えなくなる隠しスライドファスナー用のファスナーエレメントと、同エレメントをU字状に折り曲げたファスナーテープのエレメント取付縁部に列設した隠しスライドファスナーに関する。 The present invention relates to a fastener element for a hidden slide fastener in which a meshing element becomes invisible from the tape surface when meshed with a fastener element (hereinafter simply referred to as an element) attached along one edge of a pair of fastener tapes. And a hidden slide fastener lined up on an element mounting edge of a fastener tape in which the element is bent in a U shape.
 従来、この種の隠しスライドファスナーに使用されるファスナーエレメントは、合成樹脂の射出成形や亜鉛合金等のダイキャスト等によって、ファスナーテープの一端縁に芯紐部を設けたエレメント取付縁部に沿って装着される。 Conventionally, a fastener element used for this type of hidden slide fastener is formed along an element mounting edge portion in which a core string portion is provided at one end edge of a fastener tape by injection molding of synthetic resin or die casting of zinc alloy or the like. Installed.
 この隠しスライドファスナーに用いられるエレメントは、縦断面が略U字形状を有しており、その一端に形成されるエレメントの噛合部がファスナーテープの内側に向けて装着される。この状態で、エレメントが取り付けられたファスナーテープのエレメント取付縁部をU字状に折り返して熱セット等で形状を固定したのち、エレメント列にスライダーを挿通することにより、隠しスライドファスナーが得られる。 The element used for this hidden slide fastener has a substantially U-shaped longitudinal section, and the engagement portion of the element formed at one end thereof is mounted toward the inside of the fastener tape. In this state, the element attachment edge portion of the fastener tape to which the element is attached is folded back into a U shape, and the shape is fixed with a heat set or the like, and then a slider is inserted through the element row to obtain a hidden slide fastener.
 しかし、このような隠しスライドファスナーにおいては、一般的にエレメントが噛合状態のときにファスナーテープの両側からテープ幅方向に引張り応力が加わると、左右のファスナーテープ間に隙間が生じてテープ表面側から噛合状態のエレメントが見えてしまい、隠蔽性が確保できないといった問題があった。 However, in such a hidden slide fastener, generally, when tensile stress is applied in the tape width direction from both sides of the fastener tape when the element is engaged, a gap is generated between the left and right fastener tapes, and the tape surface side There is a problem in that the meshing element can be seen and the concealability cannot be secured.
 そこで、こうした問題を解消するために、例えば実公昭52-10483号公報(特許文献1)や実用新案登録第2598345号公報(特許文献2)に開示された隠しスライドファスナー用のファスナーエレメントでは、縦断面U字状のエレメントの開放端の一端に噛合部を設けている。この噛合部は、テープ固着側の板状部と、同板状部のテープ固着側とは反対面に一体に形成された首部と、同首部からエレメントの開放端側前方に向けて延設された噛合頭部とを有し、前記板状部の首部を除いた係合面と前記首部及び噛合頭部の周面との間に相手方の噛合部と係脱する噛合空間が形成されている。これらの特許文献1及び2に開示されたエレメントを装着した隠しスライドファスナーは、スライダーを摺動して左右のエレメントが噛合したときに、エレメントのテープ表面に向けての動きが前記係合面によって規制されるため、偏位のない安定した噛合状態が得られる。また、テープ幅方向に張力が働いても、前記係合面がエレメントのテープ表面側への回動を防ぎ、左右のファスナーテープ間に隙間が生じてエレメントがファスナー表面に表出することを防止する。 In order to solve such problems, for example, in the fastener element for a hidden slide fastener disclosed in Japanese Utility Model Publication No. 52-10383 (Patent Document 1) and Utility Model Registration No. 2598345 (Patent Document 2), A meshing portion is provided at one end of the open end of the U-shaped element. The meshing portion includes a plate-like portion on the tape fixing side, a neck portion integrally formed on a surface opposite to the tape fixing side of the plate-like portion, and extending from the neck portion toward the front of the open end side of the element. A meshing space is formed between the engagement surface excluding the neck portion of the plate-like portion and the peripheral surface of the neck portion and the meshing head portion to be engaged with and disengaged from the other meshing portion. . In the hidden slide fastener to which the elements disclosed in these Patent Documents 1 and 2 are mounted, when the left and right elements are engaged by sliding the slider, the movement of the elements toward the tape surface is caused by the engagement surface. Since it is regulated, a stable meshing state without deviation can be obtained. In addition, even if tension acts in the tape width direction, the engagement surface prevents the element from rotating toward the tape surface, preventing gaps between the left and right fastener tapes from appearing on the fastener surface. To do.
 このように、隠しスライドファスナーに対する特に要求される機能は、テープ幅方向に所要の張力が働いたとき、エレメントの噛合が外れ難い噛合強度を確保するだけでなく、左右のファスナーテープの間からエレメントが覗かない隠蔽性を有することにある。しかるに、近年、隠しスライドファスナーが適用される製品は極めて多様化してきている。すなわち、従来の各種衣服類やバッグ類に限らず、例えば自動車や列車、航空機等の座席シート用シートカバー等、様々な製品にその用途が広がっている。 In this way, the particularly required function for the hidden slide fastener is not only to ensure a meshing strength that makes it difficult for the element to come off when the required tension is applied in the tape width direction, but also from between the left and right fastener tapes. It has a concealing property that does not look into. However, in recent years, products to which hidden slide fasteners are applied have been extremely diversified. That is, the use is not limited to various conventional clothes and bags, but is used for various products such as seat covers for seats of automobiles, trains, airplanes, and the like.
 具体的には、例えば隠しスライドファスナーを自動車のシートカバーに適用する場合等では、通常、シートカバーはクッション体の外形寸法より小さく形成されているため、エレメントが噛合するとき又は噛合状態にある隠しスライドファスナーに対して、左右のファスナーストリンガーにはテープ長さ方向及び幅方向に強い引張り応力が加わる。しかし、従来の隠しスライドファスナーは、上記のような強い引張り応力を受けると、左右のファスナーテープ間に隙間が生じたり、またエレメントの噛合が外れるといった不具合が生じ易かった。 Specifically, for example, when a hidden slide fastener is applied to a seat cover of an automobile, the seat cover is usually formed smaller than the outer dimensions of the cushion body. With respect to the slide fastener, a strong tensile stress is applied to the left and right fastener stringers in the tape length direction and the width direction. However, when the conventional hidden slide fastener is subjected to the strong tensile stress as described above, a problem such as a gap between the left and right fastener tapes or the disengagement of the elements easily occurs.
 また、特に上記特許文献1及び2に記載された隠しスライドファスナーでは、ねじり力や突き押し力等にも弱く、例えば衣類等に縫着された隠しスライドファスナーがねじり力や突き押し力を受けた場合、エレメントの噛合部に変形や破損が生じ易く、長期の使用に耐えられないといった問題があった。 In particular, the hidden slide fasteners described in Patent Documents 1 and 2 are also weak against torsional force, pushing force, and the like. For example, the hidden slide fastener sewn on clothing or the like has received torsional force or pushing force. In this case, there is a problem that the meshing portion of the element is likely to be deformed or damaged, and cannot be used for a long time.
 特に、前記特許文献1のエレメントは、左右のエレメントを噛合させると、噛合部の各部側面同士が密接するように構成されているため、ファスナーチェーンを折り曲げる際にファスナーチェーンは硬直性を帯びて、柔軟性を欠いてしまうため、折曲操作が円滑に行えないという不具合もあった。一方、前記特許文献2のエレメントは、左右のエレメントが噛合したとき、噛合頭部のテープ長手方向の両端隅部を相手方のエレメントの前後係合面にて支持するだけであって、左右に隣り合う相手方のエレメントの係合面同士が密接することがないため、スライドファスナーの長手方向の折曲操作が容易に行えるものの、エレメントの基部(主体)から、太さが狭められた首部を介して噛合頭部が張り出しているため、噛合頭部や首部に変形や破損が生じ易いといった不具合があった。 In particular, the element of Patent Document 1 is configured such that when the left and right elements are meshed, the side surfaces of the meshing portions are in close contact with each other, so that when the fastener chain is folded, the fastener chain is stiff. There was also a problem that the bending operation could not be performed smoothly due to lack of flexibility. On the other hand, the element of Patent Document 2 only supports both corners in the tape longitudinal direction of the meshing head with the front and rear engagement surfaces of the mating element when the left and right elements are engaged, and is adjacent to the left and right. Since the engagement surfaces of the mating counterpart elements do not come into close contact with each other, the slide fastener can be easily bent in the longitudinal direction, but from the base (main body) of the element through the neck that is narrowed. Since the meshing head protrudes, there is a problem that the meshing head and neck are likely to be deformed or damaged.
 かかる課題を解消するため、例えば特開2007-151839号公報(特許文献3)によれば、隠蔽性及び噛合強度に優れ、テープ幅方向に引張り応力を受けても左右のファスナーテープ間に隙間が発生することがなく、またねじり力や突き押し力等を受けても変形や破損が生じることのない隠しスライドファスナー用のファスナーエレメントが提案されている。
実公昭52-10483号公報 実用新案登録第2598345号公報 特開2007-151839号公報
In order to solve such a problem, for example, according to Japanese Patent Application Laid-Open No. 2007-151839 (Patent Document 3), it is excellent in concealability and meshing strength, and even if it receives a tensile stress in the tape width direction, there is a gap between the left and right fastener tapes. There has been proposed a fastener element for a hidden slide fastener that does not occur and does not deform or break even when subjected to a torsional force or a pushing force.
Japanese Utility Model Publication No. 52-10383 Utility Model Registration No. 2598345 JP 2007-151839 A
 上記特許文献3により提案された隠しスライドファスナーエレメントは、芯紐部を抱持するC字状基部と、同C字状基部の各先端から略平行して同一方向に延び、その各対向面にファスナーテープの側縁部を挟持する第1及び第2テープ挟持面を有する平板状の第1及び第2テープ挟持部と、前記C字状基部の先端及び前記第2テープ挟持部の前記第2テープ挟持面とは反対側の裏面に一体に形成された噛合部とを備えている。同噛合部は前記第2テープ挟持部の前記裏面に一体化した首部と、同首部から前記第2テープ挟持部の先端面を越えて突出する噛合頭部と、前記C字状基部の先端面からなる肩部とを有している。更に、前記第2テープ挟持部の前記裏面にあって前記首部を除く平面が係合面を構成する。その特徴的構成は、前記第1テープ挟持部の先端面を、前記第2テープ挟持部の先端面よりも幅広に形成し、更に好ましくは前記第2テープ挟持部の前記係合面が、前記噛合部の噛合頭部の上面に対して、同係合面の基端から先端に向けて上傾斜する傾斜面に形成されている。 The hidden slide fastener element proposed by the above-mentioned Patent Document 3 includes a C-shaped base portion that holds the core string portion, and extends in substantially the same direction from each tip of the C-shaped base portion, and on each opposing surface thereof. Flat first and second tape clamping portions having first and second tape clamping surfaces for clamping the side edges of the fastener tape, the tip of the C-shaped base, and the second of the second tape clamping portion And a meshing portion integrally formed on the back surface opposite to the tape clamping surface. The meshing portion includes a neck portion integrated with the back surface of the second tape clamping portion, a meshing head projecting from the neck portion beyond the distal end surface of the second tape clamping portion, and a distal end surface of the C-shaped base portion. And a shoulder portion. Furthermore, a plane other than the neck portion on the back surface of the second tape clamping portion constitutes an engagement surface. The characteristic configuration is that the front end surface of the first tape holding portion is formed wider than the front end surface of the second tape holding portion, and more preferably, the engagement surface of the second tape holding portion is It forms in the inclined surface which inclines upward toward the front-end | tip from the base end of the engagement surface with respect to the upper surface of the meshing head of a meshing part.
 かかる特徴的構成を備えることにより、左右のエレメントの噛合部同士を噛合させる際に、一方のエレメントの噛合頭部は、相手方の係合面によって、下方へ押し下げられるように案内されながら、噛合位置まで滑動し、同時にエレメントが噛合したときに、第1テープ挟持部の先端面がファスナーテープを左右から押し付ける面積を従来のものよりも増大させることができ、左右のエレメント間でファスナーテープを両側から安定して押し付けることができるため、隠しスライドファスナーが引張り応力を受けても、左右のファスナーテープ間に隙間が発生することを効果的に防止でき、隠しスライドファスナーの優れた隠蔽性を確保することができる。 By providing such a characteristic configuration, when the meshing portions of the left and right elements are meshed with each other, the meshing head of one element is guided by the mating engagement surface so as to be pushed downward, and the meshing position When the elements are engaged at the same time, the area where the front end surface of the first tape clamping part presses the fastener tape from the left and right can be increased more than the conventional one. Since it can be pressed stably, even if the hidden slide fastener is subjected to tensile stress, it can effectively prevent the gap between the left and right fastener tapes from being generated, and ensure the excellent concealment of the hidden slide fastener Can do.
 しかるに、この種の隠しスライドファスナーは、上述のような多様な分野へと適用の拡がりを見せており、その結果、上記特許文献3のごとく、製品に装着された隠しスライドファスナーがねじり力や突き押し力を受けた場合に、エレメント同士の噛合強度とエレメント隠蔽性は向上し、噛合頭部や首部に変形や破損が生じにくくなりはするものの、適用分野によっては、従来の規定概念だけではその分野に特有の要求に応えられないケースも生じてくることがある。 However, this type of hidden slide fastener has been widely applied to various fields as described above. As a result, as shown in Patent Document 3, the hidden slide fastener attached to the product has a torsional force and a thrust. When subjected to a pressing force, the meshing strength between elements and the element concealing property are improved, and deformation and damage to the meshing head and neck are less likely to occur. There may be cases where the specific requirements of a field cannot be met.
 例えば、近年、多くの自動車用座席シートにエアバッグ装置が装着されるようになってきている。このようにエアバッグ装置が装着された座席シート用のシートカバーにあっては、従来のごとく単に座席シートカバーをもって座席シートを覆えば足りるというものではなく、通常は外観的に従来と同様のカバー形状を維持しているが、万一の事態が発生してエアバッグ装置が作動したとき、瞬時に且つ円滑にエアバッグを座席シート外の所定の方向に膨張展開させる必要があるため、座席用シートカバーの展開部もエアバッグの膨張圧を受けた瞬間に速やかに且つ確実に展開しなければならない。 For example, in recent years, airbag devices have been mounted on many seats for automobiles. Thus, in the seat cover for seat seats to which the airbag apparatus is mounted, it is not necessary to simply cover the seat seat with the seat seat cover as in the conventional case. Although the shape is maintained, it is necessary to inflate and deploy the airbag in a predetermined direction outside the seat, instantly and smoothly when the airbag device is activated due to an emergency. The deployment part of the seat cover must also be deployed quickly and reliably at the moment when the inflation pressure of the airbag is received.
 そのため、従来のエアバッグ装置が装着された座席シートを被覆するシートカバーの展開部には脆弱な糸やプラスチック部品が使われ、エアバッグの膨張圧を受けた瞬間に速やかに且つ確実に展開できるようにしている。しかしながら、こうした脆弱な糸やプラスチック部品を使う場合には、自動車用座席としての見栄えが損なわれやすく、特に脆弱な糸を使うときは座席シートの展開部の表皮裏面に低伸縮性の布地を縫い付ける必要があってシート製造上の煩雑性が増加するばかりでなく、作業上及び材料的なコスト増加につながりかねない。また、脆弱なプラスチック部品を使用する場合には、シートカバーの展開部が展開するとき、プラスチック部品が破断してその破断片が周辺に飛び散りやすい。 Therefore, fragile thread and plastic parts are used for the deployment part of the seat cover that covers the seat seat on which the conventional airbag device is mounted, and can be deployed quickly and reliably at the moment when the airbag is inflated. I am doing so. However, when these fragile threads and plastic parts are used, the appearance of an automobile seat is likely to be impaired. Especially when fragile threads are used, a low stretch fabric is sewn on the back of the skin of the seat seat development. This increases not only the complexity of sheet manufacturing, but also increases the work and material costs. Further, when using a weak plastic part, when the development part of the seat cover is developed, the plastic part is broken and the broken pieces are easily scattered around.
 こうした事情を踏まえたとき、特にエアバッグ装置が装着された自動車等の座席シートに取り付けられるシートカバーの展開部を、通常時には外観上の見栄えが確保され、しかもエアバッグ装置の作動時にはエアバッグが膨張展開を開始すると同時に速やかにシートカバーの展開部も展開することが肝心であり、更には同シートカバーの前記展開部を合理的なコストで製作できることが要求される。 In view of such circumstances, the appearance of the seat cover that is attached to the seat of an automobile or the like equipped with an airbag device is ensured in normal appearance, and the airbag is not activated when the airbag device is in operation. It is important that the deployment portion of the seat cover is also deployed at the same time as the expansion and deployment is started, and further, the deployment portion of the seat cover is required to be manufactured at a reasonable cost.
 本発明は、これらの要求に対応すべく、上記隠しスライドファスナーの利点を生かすとともに、その欠点を補って、エアバッグ装置の装着された自動車用座席シートのシートカバーとしての見栄えの良さを保持し、エアバッグ装置の作動時におけるシートカバーの展開部の速やかで且つ円滑な展開を可能にする隠しスライドファスナーを提供することを目的としている。 In order to meet these demands, the present invention makes use of the advantages of the above-described hidden slide fastener and compensates for the disadvantages, and maintains the good appearance as a seat cover of an automobile seat seat to which an airbag device is mounted. It is an object of the present invention to provide a hidden slide fastener that enables quick and smooth deployment of the deployment portion of the seat cover when the airbag device is operated.
 上記目的を達成するために、本発明により提供されるファスナーエレメントは、基本的な構成として、芯紐部を抱持するC字状基部と、同C字状基部の各先端から略平行して同一方向に延び、その各対向面にファスナーテープの側縁部を挟持する第1及び第2テープ挟持面を有する平板状の第1及び第2テープ挟持部と、前記C字状基部の先端及び前記第2テープ挟持部の前記第2テープ挟持面とは反対側の裏面に一体に形成された噛合部とを備えてなり、同噛合部は前記第2テープ挟持部の前記裏面に一体化した首部と、同首部から前記第2テープ挟持部の先端面を越えて延出する噛合頭部と、前記C字状基部の先端面からなる肩部とを有してなる隠しスライドファスナー用のファスナーエレメントであって、前記第2テープ挟持部の前記裏面と相手方の前記噛合頭部とが、前記C字状基部の中心部を中心として相対的に回動しやすい形状に形成されていることを最も主要な特徴としている。
 また好ましい態様によれば、前記首部のテープ長さ方向の前後幅寸法W2と前記噛合頭部のテープ長さ方向の前後張出幅W1との比の値W2/W1が0.55~0.75である。
In order to achieve the above object, the fastener element provided by the present invention has, as a basic configuration, a C-shaped base portion that holds the core string portion and substantially parallel to each tip of the C-shaped base portion. Flat first and second tape clamping portions that extend in the same direction and have first and second tape clamping surfaces that sandwich the side edges of the fastener tape on their respective opposing surfaces; and tips of the C-shaped bases; And a meshing portion integrally formed on the back surface of the second tape clamping portion opposite to the second tape clamping surface, and the meshing portion is integrated with the back surface of the second tape clamping portion. A fastener for a hidden slide fastener having a neck portion, a meshing head portion extending from the neck portion beyond the tip surface of the second tape clamping portion, and a shoulder portion comprising the tip surface of the C-shaped base portion An element, wherein the second tape clamping portion Said coupling head side and the other party, and the most important feature that it is formed relatively rotated easily shape around the central portion of the C-shaped base.
According to a preferred aspect, the ratio value W2 / W1 between the front-rear width dimension W2 of the neck portion in the tape length direction and the front-rear extension width W1 of the meshing head portion in the tape length direction is 0.55-0. 75.
 こうした構成を備えた隠しスライドファスナー用のファスナーエレメントにあって、上記相対的に回動しやすい形状の代表的な態様は、前記第2テープ挟持部の前記第2テープ挟持面とは反対側の裏面の前記首部を除く係合面が、同係合面のC字状基部側の基端から相手方のファスナーエレメントの噛合頭部の頂点部と局部的に面接触可能な中間部までが第2テープ挟持部の下面と平行な平面とされ、前記中間部を起点として先端までが上方へ向けて屈曲する屈曲面とされている。また、前記屈曲面の前記起点が、相手方ファスナーエレメントとの噛合時における相手方ファスナーエレメントの噛合頭部の先端位置近傍であることが望ましい。更に、前記屈曲面が上傾斜する傾斜面であり、或いは下方に膨出する湾曲面であるとよい。 In the fastener element for the hidden slide fastener having such a configuration, a typical aspect of the relatively easily rotatable shape is a side opposite to the second tape clamping surface of the second tape clamping portion. The engagement surface excluding the neck portion on the back surface is from the proximal end of the engagement surface on the C-shaped base side to the intermediate portion that can be in surface contact with the apex portion of the meshing head of the other fastener element. The flat surface is parallel to the lower surface of the tape holding portion, and the bent portion is bent upward from the intermediate portion to the tip. In addition, it is desirable that the starting point of the bent surface is in the vicinity of the tip position of the mating head of the mating fastener element when meshing with the mating fastener element. Further, the bent surface may be an inclined surface that is inclined upward or a curved surface that bulges downward.
  また、他の代表的な態様によれば、前記相対的に回動しやすい形状が、前記噛合頭部の先端稜線部が面取りされた面取部とされている。前記面取部としては、噛合頭部の先端部へ向けて下傾斜する傾斜面、或いは湾曲面に形成するとよい。 In addition, according to another representative aspect, the relatively easy-to-turn shape is a chamfered portion in which a tip ridge line portion of the meshing head is chamfered. The chamfered portion may be formed on an inclined surface or a curved surface that is inclined downward toward the tip of the meshing head.
 更なる他の態様によれば、前記相対的に回動しやすい形状として、前記噛合頭部の前記第2テープ挟持部側とは反対側の表面が先端に向けて傾斜する上傾斜面又は凸状の湾曲面の形状を採用することもできる。 According to still another aspect, as the shape that is relatively easy to rotate, the surface on the opposite side to the second tape clamping portion side of the meshing head is an upper inclined surface or a convex surface that is inclined toward the tip. The shape of a curved surface can also be adopted.
 本発明の第2の基本的な構成は、一対のファスナーテープのエレメント取付縁部に沿って、上記ファスナーエレメントが所定間隔で列設され、前記ファスナーテープのエレメント取付縁部を略U字状に折り返した状態で前記ファスナーエレメントにスライダーが挿通されてなることを特徴とする隠しスライドファスナーにある。 According to a second basic configuration of the present invention, the fastener elements are arranged at predetermined intervals along an element attachment edge of a pair of fastener tapes, and the element attachment edge of the fastener tape is substantially U-shaped. In the hidden slide fastener, the slider is inserted into the fastener element in a folded state.
 上記特許文献3に記載された隠しスライドファスナー用のファスナーエレメントを、エアバッグ装置を装着した自動車用座席シートのシートカバーの展開部に採用すると、エアバッグ装置のエアバッグが膨張し始めて、隠しスライドファスナーの内側からその膨張圧が作用しファスナーエレメントの噛合を外そうとするとき、左右のファスナーテープが互いに離間する方向、すなわちテープ幅方向に互いを引き離す方向の力(横引き力)が作用する。この横引き力が作用すると、噛合状態にあるファスナーエレメント同士は、その噛合頭部を中心としてC字状基部の各先端から略平行して同一方向に延びる第1及び第2テープ挟持部のうち、各ファスナーテープ本体側の第1テープ挟持部が互いに離間するように、ファスナーエレメントの噛合頭部を中心として回動することにより、相手方の噛合頭部から外れようとする。 When the fastener element for the hidden slide fastener described in Patent Document 3 is adopted in the deployment portion of the seat cover of the automobile seat with the airbag device mounted, the airbag of the airbag device starts to expand, and the hidden slide When the expansion pressure acts from the inside of the fastener to try to disengage the fastener element, a force (lateral pulling force) acts in the direction in which the left and right fastener tapes are separated from each other, that is, in the tape width direction. . When this lateral pulling force is applied, the fastener elements in the meshing state are the first and second tape clamping portions extending in the same direction from the tips of the C-shaped bases around the meshing heads. The fastener tape main body side tends to be disengaged from the mating head of the other party by rotating about the meshing head of the fastener element so that the first tape clamping portions on the side of each fastener tape are separated from each other.
 しかるに、上記特許文献1~3に記載されたような従来の隠しスライドファスナー用エレメントにあっては、その係合部における噛合強度が大き過ぎて容易には外れず、更にエアバッグの強大な膨張圧が加わるとファスナーエレメント同士が噛合状態を維持しながらファスナーテープの幅方向にファスナーエレメントの噛合頭部を中心として回動させようとする無理な力がかかり、ファスナーエレメントの噛合頭部や第2テープ挟持部が破断してしまうことが多く、その破断片が周辺に飛び散り、エアバッグの膨張展開タイミングを遅らせるばかりでなく、破断片が乗員を直撃しかねない。 However, in the conventional hidden slide fastener elements as described in Patent Documents 1 to 3, the engagement strength at the engaging portion is too large to be easily removed, and the airbag is strongly expanded. When pressure is applied, an excessive force is applied to rotate the fastener element in the width direction of the fastener tape around the engagement head of the fastener element while maintaining the engagement state between the fastener elements. In many cases, the tape holding portion is broken, and the broken pieces are scattered to the periphery, not only delaying the inflation and deployment timing of the airbag, but also the broken pieces may hit the occupant directly.
 本発明者等は、かかる従来のこの種のファスナーエレメントの破断原因が何処にあるのかを様々な実験を通して解明に努めた。その結果、従来のファスナーエレメントにあっては、噛合するファスナーエレメント同士の噛合頭部の噛合面と相手方の上記第2テープ挟持部の噛合部側の係合面との間の面接触(面係合)する面積が大きすぎて、ファスナーエレメント同士の噛合が外れようとする噛合頭部の先端部が相手方係合面上を摺動しながら噛合頭部を中心とする回動動作を阻止し、噛合頭部と相手方の係合面とが強力に押圧しあって、果ては噛合頭部及び/又は第2テープ挟持部が破断してしまうということが分かった。 The inventors of the present invention have sought to elucidate the cause of the breakage of such a conventional fastener element through various experiments. As a result, in the conventional fastener element, the surface contact (surface engagement) between the meshing surface of the meshing head between the meshing fastener elements and the engagement surface on the meshing portion side of the mating second tape clamping portion. The tip of the meshing head that is about to disengage between the fastener elements slides on the mating engagement surface and prevents the pivoting movement around the meshing head, It was found that the meshing head and the mating engagement surface were strongly pressed together, and eventually the meshing head and / or the second tape clamping portion were broken.
 そこで本発明にあっては、上記特徴的構成を採用することにより、前述の噛合頭部の回動動作を容易にし、通常の状態にあるときは所要の噛合強度を確保しつつ、エアバッグ装置の作動時にはエアバッグの膨張展開力がシート展開部に作用した瞬間に容易に噛合状態が解除されることになる。その結果、エアバッグ装置の作動時にエアバッグの膨張展開動作にタイミングの遅れが生じず、且つファスナーエレメントの破壊も発生しない。本発明における上記横引き力は、60~200N/2.54cmの範囲にあることが望ましい。60N/2.54cmより小さいと噛合強度が低すぎて、ファスナーエレメントの噛合が簡単に外れやすくなる。200N/2.54cmを越えると、エアバッグの膨張展開タイミングの遅れが多くなり、ファスナーエレメントの破壊も頻発する。なお、ファスナーエレメントの破断強度は、その使用材質によっても大きく異なる。例えばPBTやPOMは硬度が高いが脆性が大きく破断しやすいが、例えばPAは脆性が低いため破断しにくい。 Therefore, in the present invention, by adopting the above-described characteristic configuration, the above-described meshing head can be easily rotated, and the airbag device is secured while maintaining a required meshing strength when in a normal state. During the operation, the meshing state is easily released at the moment when the inflating and deploying force of the airbag acts on the seat deploying portion. As a result, there is no timing delay in the inflating and deploying operation of the airbag when the airbag device is operated, and the fastener element is not broken. The lateral pulling force in the present invention is desirably in the range of 60 to 200 N / 2.54 cm. If it is smaller than 60 N / 2.54 cm, the meshing strength is too low, and the meshing of the fastener element is easily disengaged. If it exceeds 200 N / 2.54 cm, the delay of the inflation and deployment timing of the airbag increases, and the fastener element frequently breaks. Note that the breaking strength of the fastener element varies greatly depending on the material used. For example, PBT and POM have high hardness but are brittle and easily break, but for example PA has low brittleness and is difficult to break.
 本発明にあって、前記首部のテープ幅方向における前後幅寸法W2と前記噛合頭部の同じくテープ幅方向における前後方向の張出幅W1との比の値W2/W1が、0.55より小さいと、相手方のファスナーエレメントとの噛合強度が高くなり、0.75よりも大きくなると、相手方のファスナーエレメントとの噛合強度が極端に低くなり、いずれにしても実用に耐えない。 In the present invention, the ratio value W2 / W1 of the front-rear width dimension W2 in the tape width direction of the neck part and the overhanging width W1 in the front-rear direction in the tape width direction of the meshing head is smaller than 0.55. Then, the meshing strength with the mating fastener element becomes high, and when it exceeds 0.75, the mating strength with the mating fastener element becomes extremely low, and in any case, it is not practical.
 こうして、左右のファスナーエレメントの通常噛合時は、第2テープ挟持部の噛合部側の係合面の平坦面に相手方のファスナーエレメントの噛合頭部の先端部が局部的に面接触して係合状態にある。いま、エアバッグが膨張し始めて左右のファスナーテープにファスナーエレメントを引き離すような強力な引っ張り力が作用すると、例えば前記係合面の平坦面部分と先端部分が係合している相手方のファスナーエレメントの噛合頭部の先端部分が、平坦面に続く屈曲面へと移動して、噛合頭部が相対的に回動し、容易に前記係合面から外れる。その結果、エアバッグの展開膨張時には噛合頭部と相手方の係合面との係合が無理なく外れ、噛合頭部及び係合面に必要以上の力が作用せず、スライドファスナーが開き、エアバッグも容易に展開する。これにより、ファスナーエレメントの破断も起こらず、且つエアバッグもタイミング遅れもなく適切なタイミングで膨張展開する。 Thus, during normal engagement of the left and right fastener elements, the tip of the engagement head of the mating fastener element is brought into surface contact with the flat surface of the engagement surface on the engagement portion side of the second tape clamping portion and engaged. Is in a state. Now, when a strong pulling force that pulls the fastener element apart from the left and right fastener tapes when the airbag starts to inflate, for example, the flat surface portion of the engagement surface and the tip portion of the mating fastener element engaged with each other The distal end portion of the meshing head moves to a bent surface following the flat surface, and the meshing head relatively rotates and easily disengages from the engagement surface. As a result, when the airbag is deployed and inflated, the meshing head and the mating engagement surface are easily disengaged, an excessive force is not applied to the meshing head and the engagement surface, the slide fastener opens, The bag can be easily deployed. Accordingly, the fastener element does not break, and the airbag is inflated and deployed at an appropriate timing without timing delay.
 前記屈曲面の前記起点を、相手方ファスナーエレメントとの噛合時における相手方ファスナーエレメントの噛合頭部の先端部近傍とすることにより、前記屈曲面はファスナーエレメントの通常噛合時に、エアバッグの膨張展開開始時の強大な膨張圧が噛合状態にあるファスナーエレメントに作用して噛合解除状態へと移行するとき、噛合エレメント同士に過大な負担をかけることなく円滑に噛合解除を実現させる。 By making the starting point of the bent surface near the tip of the engaging head of the mating fastener element at the time of meshing with the mating fastener element, the bent surface is at the time of normal meshing of the fastener element and at the start of inflation and deployment of the airbag When a large expansion pressure of the above acts on the fastener element in the meshing state to shift to the meshing release state, the meshing release is smoothly realized without imposing an excessive burden on the meshing elements.
 また、前記噛合頭部の先端稜線部を面取りしても、或いは前記噛合頭部の前記第2テープ挟持部側とは反対側の表面を先端に向けて上方に傾斜する上傾斜面又は凸状に湾曲させても、噛合頭部が相対的に回動しやすくなり前記係合面から外れやすくなる。 Further, even if the tip ridge line portion of the meshing head is chamfered, or an upper inclined surface or a convex shape in which the surface on the opposite side of the meshing head to the second tape clamping portion side is inclined upward. Even if it is curved, the meshing head is relatively easy to rotate and is easily detached from the engagement surface.
 これらの構成を有するファスナーエレメントは、一対のファスナーテープのエレメント取付縁部に沿って所定間隔で列設し、前記ファスナーテープのエレメント取付縁部を略U字状に折り返す隠しスライドファスナーには、特に有効である。 Fastener elements having these configurations are lined up at predetermined intervals along the element attachment edges of a pair of fastener tapes, and the hidden slide fastener that folds the element attachment edges of the fastener tape into a substantially U shape is particularly suitable. It is valid.
本発明に係る第1実施例を示すファスナーエレメントの裏面側から見た斜視図である。It is the perspective view seen from the back surface side of the fastener element which shows 1st Example which concerns on this invention. 同ファスナーエレメントの表面側から見た斜視図である。It is the perspective view seen from the surface side of the fastener element. 同ファスナーエレメントの側面図である。It is a side view of the fastener element. 同ファスナーエレメントが取着された本発明の隠しスライドファスナーの通常の噛合状態を示す部分側面図である。It is a partial side view which shows the normal meshing state of the hidden slide fastener of this invention to which the same fastener element was attached. 本発明の隠しスライドファスナーにテープ横引き力が働いたときの噛合解除状態を示す部分側面図である。It is a partial side view which shows a mesh release state when a tape horizontal pulling force is applied to the hidden slide fastener of the present invention. 本発明の第2実施例を示すファスナーエレメントの裏面図である。It is a reverse view of the fastener element which shows 2nd Example of this invention. 本発明の第3実施例を示すファスナーエレメントの通常の噛合状態を示す一部断面図である。It is a partial cross section figure which shows the normal meshing state of the fastener element which shows 3rd Example of this invention. テープ横引き力が働いたときの同ファスナーエレメントの噛合状態を示す一部断面図である。It is a partial cross section figure which shows the meshing state of the same fastener element when a tape horizontal pulling force worked. 本発明の隠しスライドファスナーの一部を示す裏面図である。It is a reverse view which shows a part of hidden slide fastener of this invention. 同隠しスライドファスナーの一部を示す表面図である。It is a surface view which shows a part of the hidden slide fastener. ファスナーエレメントがスライダーのファスナーエレメント通路内へ導かれるときのファスナーエレメントの姿勢変化を説明する挙動説明図である。It is behavior explanatory drawing explaining the attitude | position change of a fastener element when a fastener element is guide | induced into the fastener element channel | path of a slider. 上記第1実施例の変形例を示す裏面側から見た部分斜視図である。It is the fragmentary perspective view seen from the back surface side which shows the modification of the said 1st Example. 上記第3実施例の変形例を示すファスナーエレメントの部分側面図である。It is a partial side view of the fastener element which shows the modification of the said 3rd Example.
符号の説明Explanation of symbols
1          ファスナーエレメント
2          C字状基部
3          第1テープ挟持部
4          第2テープ挟持部
5          噛合部
6          噛合頭部
6a         湾曲面
7          首部
8          肩部
9          補強部
10         テープ側縁部装着溝
11         テープ挟持面
12         係合面
12a        水平面
12b        上傾斜面
13         噛合頭部上面
14         円形抱持孔
15         第1テープ挟持部の先端面
16         第2テープ挟持部の先端面
18         第1外周面
19         第2外周面
21         隠しスライドファスナー
22         ファスナーテープ
23         ファスナーストリンガー
24         スライダー
25         芯紐部
26         折返端面
27         ファスナーエレメント通路
30         フランジ
DESCRIPTION OF SYMBOLS 1 Fastener element 2 C-shaped base 3 1st tape clamping part 4 2nd tape clamping part 5 Engagement part 6 Engagement head 6a Curved surface 7 Neck part 8 Shoulder part 9 Reinforcement part 10 Tape side edge mounting groove 11 Tape clamping surface 12 Engagement surface 12a Horizontal surface 12b Upper inclined surface 13 Engagement head upper surface 14 Circular holding hole 15 Tip surface 16 of first tape clamping portion Tip surface 18 of second tape clamping portion First outer peripheral surface 19 Second outer peripheral surface 21 Hidden slide Fastener 22 Fastener tape 23 Fastener stringer 24 Slider 25 Core string portion 26 Return end surface 27 Fastener element passage 30 Flange
 以下、本発明を実施するための最良の形態について、実施例を挙げて図面を参照しながら詳細に説明する。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings by way of examples.
  図1は、本発明の第1実施例に係るファスナーエレメントの全体を示すエレメント表出側から見た斜視図であり、図2は、同ファスナーエレメントをエレメント隠蔽側から見た斜視図、図3は、同ファスナーエレメントの側面図である。また、図4は、同ファスナーエレメントが噛合した状態の側面図であり、図5は同噛合ファスナーエレメントに左右のファスナーテープの横引き力が働き噛合が解除されるときの状態を示す側面図である。図6は図5における要部拡大断面図である。 FIG. 1 is a perspective view of the entire fastener element according to the first embodiment of the present invention as seen from the element exposed side, and FIG. 2 is a perspective view of the fastener element as seen from the element concealing side. FIG. 3 is a side view of the fastener element. FIG. 4 is a side view showing a state in which the fastener element is engaged, and FIG. 5 is a side view showing a state in which the lateral pulling force of the left and right fastener tapes acts on the engagement fastener element to release the engagement. is there. FIG. 6 is an enlarged cross-sectional view of the main part in FIG.
 ファスナーエレメント1は、ファスナーテープ22のテープ側縁部を装着するテープ側縁部装着溝10が形成された全体が略U字形状を呈しており、ファスナーテープ22の芯紐部25を抱持するC字状基部2と、C字状基部2の各先端から略平行して延設された平板状の第1テープ挟持部3及び第2テープ挟持部4と、第2テープ挟持部4のテープ挟持面11とは反対側の裏面にあたる係合面12側に一体化した噛合部5とを備えている。第1テープ挟持部3と第2テープ挟持部4とは、C字状基部2に対して僅かに第1テープ挟持部側に僅かに傾斜して斜め上方に立ち上がっている。その結果、テープ側縁部装着溝10も全体的に同じ方向(以下、上方という。)に傾斜している。 The fastener element 1 has a substantially U-shape as a whole in which the tape side edge mounting groove 10 for mounting the tape side edge of the fastener tape 22 is formed, and holds the core string portion 25 of the fastener tape 22. C-shaped base 2, flat plate-like first tape clamping unit 3 and second tape clamping unit 4 extending substantially in parallel from the respective tips of C-shaped base 2, and tape of second tape clamping unit 4 The engagement portion 5 is provided on the engagement surface 12 side corresponding to the back surface opposite to the sandwiching surface 11. The first tape clamping part 3 and the second tape clamping part 4 are slightly inclined with respect to the C-shaped base part 2 toward the first tape clamping part side, and rise obliquely upward. As a result, the tape side edge mounting groove 10 is also inclined in the same direction (hereinafter referred to as “upward”) as a whole.
 本実施例のファスナーエレメント1には、C字状基部2の上下方向の略中心部に芯紐部25を抱持する円形抱持孔14が設けられており、この円形抱持孔14から斜め上方に向けて上記テープ側縁部装着溝10が形成されている。なお、図示は省略するが、テープ側縁部装着溝10の略中央に、例えば前記特許文献2に記載されているような、第1テープ挟持部3と第2テープ挟持部4とを連結する連結部を形成することも可能である。このような連結部を設けることにより、ファスナーエレメント1をファスナーテープ22の所定箇所に強固に固着させることが可能となる。 The fastener element 1 of the present embodiment is provided with a circular holding hole 14 for holding the core string portion 25 at a substantially central portion in the vertical direction of the C-shaped base portion 2. The tape side edge mounting groove 10 is formed upward. In addition, although illustration is abbreviate | omitted, the 1st tape clamping part 3 and the 2nd tape clamping part 4 which are described in the said patent document 2, for example are connected to the approximate center of the tape side edge part mounting groove | channel 10. It is also possible to form a connecting part. By providing such a connecting portion, the fastener element 1 can be firmly fixed to a predetermined portion of the fastener tape 22.
 第2テープ挟持部4の係合面12側に一体化される噛合部5は、長円形状を呈する噛合頭部6と、括れた首部7と、C字状基部2の一部先端面からなる肩部8とを有している。係合面12は、首部7及び肩部8の左右両側にそれぞれ配され、肩部8から噛合頭部6にかけて延在しており、首部7及び肩部8に対してひさし状に張り出している。前記噛合頭部6は前記第2テープ挟持部4の係合面12を越えて外側に延出している。前記噛合頭部6、首部7、肩部8及び係合面12との間に噛合空間が形成される。本実施例にあって、第2テープ挟持部4、特にその係合面12の形状に最も特徴がある。 The meshing part 5 integrated on the engagement surface 12 side of the second tape clamping part 4 includes an oval meshing head 6, a constricted neck 7, and a partial tip surface of the C-shaped base 2. And a shoulder portion 8. The engagement surfaces 12 are respectively arranged on the left and right sides of the neck portion 7 and the shoulder portion 8, extend from the shoulder portion 8 to the meshing head 6, and project in an eave shape with respect to the neck portion 7 and the shoulder portion 8. . The meshing head 6 extends outward beyond the engagement surface 12 of the second tape clamping portion 4. A meshing space is formed between the meshing head 6, the neck 7, the shoulder 8 and the engagement surface 12. In this embodiment, the second tape holding portion 4, particularly the shape of the engagement surface 12 thereof, is the most characteristic.
 係合面12は、図1~図3に示すように、テープ側縁部装着溝10の基端部を構成する上記円形抱持孔14との連通部から噛合頭部6までの間で延びているが、その形状は上記特許文献1及び2に記載されているような、単なる同一平面ではなく、前記連通部と噛合頭部6との間における中間部12cにおいて水平面12aから上傾斜面12bへと切り換えられている。前記中間部12cは、図4に示すように、相手方のファスナーエレメント1との噛合時に、相手方の噛合頭部6の先端部分だけが前記水平面12aと局部的に僅かに面接触するに足りる部位にあたる。ここで、相手方の噛合頭部6の先端部分が水平面12aと僅かに面接触させるのは、ファスナーエレメント同士が噛合しているとき、外部からの突き上げ力により各ファスナーエレメント1が簡単に上下方向に移動しないようにして、隠しスライドファスナーの通常噛合時には容易には噛合割れを起こさないようにするがためである。 As shown in FIGS. 1 to 3, the engagement surface 12 extends from the communicating portion with the circular holding hole 14 constituting the proximal end portion of the tape side edge mounting groove 10 to the meshing head 6. However, the shape thereof is not simply the same plane as described in Patent Documents 1 and 2 above, but in the intermediate portion 12c between the communication portion and the meshing head 6 from the horizontal surface 12a to the upper inclined surface 12b. It has been switched to. As shown in FIG. 4, the intermediate portion 12 c corresponds to a portion where only the distal end portion of the mating head 6 is in slight surface contact with the horizontal surface 12 a when meshing with the mating fastener element 1. . Here, the tip of the mating head 6 of the other party is brought into slight surface contact with the horizontal surface 12a when each fastener element 1 is easily moved in the vertical direction by the pushing-up force from the outside when the fastener elements are engaged with each other. This is because it is prevented from moving and is not easily cracked during normal engagement of the hidden slide fastener.
 係合面12の前記中間部12cから先端までの上傾斜面12bは、図4に示すファスナーエレメント1の通常噛合時から、図示せぬエアバッグの膨張展開開始時における強大な膨張圧が噛合状態にあるファスナーエレメント1に作用したときの図5に示す噛合解除状態への移行を、噛合エレメント同士に過大な負担をかけることなく円滑に実現させるために機能する。 The upper inclined surface 12b from the intermediate portion 12c to the tip of the engaging surface 12 is engaged with a strong inflation pressure when the fastener element 1 shown in FIG. 5 functions to smoothly realize the transition to the mesh release state shown in FIG. 5 when acting on the fastener element 1 in the above without causing an excessive burden between the mesh elements.
 すなわち、ファスナーエレメント1同士の通常噛合時は、図4に示すように左右のファスナーエレメント1における第2テープ挟持部4の前記水平面12aに対して相手方の噛合頭部6の先端部分が僅かに面接触しているに過ぎない。この面接触の面積は、ファスナーエレメント1の大きさによって変更可能であり一律に決めることはできないが、本発明の隠しスライドファスナー21が、例えばエアバッグ装置を装着した車両用座席シートの図示せぬシートカバーに適用されているときも、左右のファスナーテープ22に互いが離間する方向に通常の引っ張り力が働いているときや、噛合状態にあるファスナーエレメント1に対する突き上げ力などの外力が働いたとしても、ファスナーエレメント1を相手方の第2テープ挟持部4の水平面12aで押さえ付けて、その噛合姿勢を崩すことなく維持するに十分な面積であればよい。 That is, when the fastener elements 1 are normally engaged with each other, as shown in FIG. 4, the distal end portion of the mating head 6 slightly faces the horizontal surface 12 a of the second tape clamping portion 4 in the left and right fastener elements 1. They are just touching. The area of this surface contact can be changed depending on the size of the fastener element 1 and cannot be determined uniformly. However, the hidden slide fastener 21 of the present invention is not shown, for example, in a vehicle seat seat equipped with an airbag device. Even when it is applied to the seat cover, when a normal pulling force is applied to the left and right fastener tapes 22 in the direction in which they are separated from each other, or an external force such as a push-up force against the engaged fastener element 1 is applied. However, it is sufficient if the area is sufficient to hold the fastener element 1 with the horizontal surface 12a of the counterpart second tape holding portion 4 and maintain the meshing posture without breaking it.
 この実施例によると、上記第2テープ挟持部4の先端面16と直角に交わる噛合頭部6の上面13(図2)には、前記先端面16と噛合頭部上面13とを連結するように平面視で矩形状を呈し、側面視で直角三角形状の補強部9が配されている。本実施例のファスナーエレメント1では、前述のように噛合頭部6が細い首部7を介して設けられおり、また噛合頭部上面13と先端面16とが直角に交わっているため、噛合部5の強度が懸念されるが、前記補強部9を設けたことにより、噛合部5の強度を十分に確保することができ、例えば噛合状態にあるファスナーエレメント1に強いねじり力や突き押し力等が加えられた場合でも、噛合部5の変形や破損を防止することができる。また、平面視で矩形状としているため、噛合頭部6の上面全体を補強できることになり、エアバッグによる強大な膨張圧が作用しても、その圧力に十分耐えることができ、容易には破損することもない。なお、この補強部9は図示のように平面視で矩形状とせず、全体が三角錐形状としてもよい。 According to this embodiment, the tip surface 16 and the meshing head upper surface 13 are connected to the upper surface 13 (FIG. 2) of the meshing head 6 that intersects the tip surface 16 of the second tape holding part 4 at a right angle. A reinforcing portion 9 having a rectangular shape in plan view and a right triangle shape in side view is arranged. In the fastener element 1 of the present embodiment, the meshing head 6 is provided via the thin neck portion 7 as described above, and the meshing head upper surface 13 and the tip surface 16 intersect at right angles. However, since the reinforcing portion 9 is provided, the strength of the meshing portion 5 can be sufficiently secured. For example, a strong twisting force or pushing force is applied to the fastener element 1 in the meshing state. Even when added, deformation and breakage of the meshing portion 5 can be prevented. In addition, since it has a rectangular shape in plan view, the entire upper surface of the meshing head 6 can be reinforced, and even if a large inflation pressure is applied by the airbag, it can sufficiently withstand the pressure and easily breaks. I don't have to. In addition, this reinforcement part 9 is not made into a rectangular shape by planar view like illustration, and the whole may be made into a triangular pyramid shape.
 更に本実施例における首部7及び噛合頭部6の第2テープ挟持部側とは反対側の面、すなわち前記補強部9が形成されている面とは反対側の表面(下面)に、図1~図3に示すとおり、噛合頭部6の先端に向けて湾曲する湾曲面6aを形成している。また、湾曲面6aに代えて噛合頭部の先端へ向けて上方へ傾斜する上傾斜面とすることもできる。湾曲面6aまたは上傾斜面を形成することにより、噛合頭部6の上下方向の肉厚を噛合頭部6の先端へ向けて漸次減少するようにする。これは、左右のファスナーテープ22に横引き力が働いたとき、例えば図5に示すように、ファスナーエレメント1自身が、C字状基部2の中心に位置している芯紐部25を中心としてファスナーテープ22の横引き力向に回動しやすくするがためである。 Further, on the surface of the neck 7 and the meshing head 6 on the opposite side to the second tape clamping portion side, that is, the surface (lower surface) opposite to the surface on which the reinforcing portion 9 is formed, FIG. As shown in FIG. 3, a curved surface 6a that curves toward the tip of the meshing head 6 is formed. Moreover, it can replace with the curved surface 6a and can also be set as the upper inclined surface which inclines upward toward the front-end | tip of a meshing head. By forming the curved surface 6 a or the upper inclined surface, the vertical thickness of the meshing head 6 is gradually reduced toward the tip of the meshing head 6. This is because when a lateral pulling force is applied to the left and right fastener tapes 22, for example, as shown in FIG. 5, the fastener element 1 itself is centered on the core string portion 25 located at the center of the C-shaped base portion 2. This is to facilitate rotation in the direction of the lateral pulling force of the fastener tape 22.
 いま、ファスナーエレメント1が図4に示す通常の噛合状態にあるときの隠しスライドファスナー21に、例えば図示せぬエアバッグ装置が作動して、エアバッグが膨張展開を開始して、その強大な膨張圧が各ファスナーエレメント1に作用すると、噛合状態にあるファスナーエレメント1は瞬時に図5に示す噛合解除状態へと移行する。すなわち、エアバッグの膨張開始時の膨張圧により、左右のファスナーテープ22の離間方向に強力な引っ張り力が働き、左右のファスナーエレメント1がそれぞれ芯紐部25を中心としてファスナーテープ22の引っ張り方向に速やかに回動する。このとき、第2テープ挟持部4の水平面12aに僅かに面接触していた相手方の噛合頭部6の先端部分は前記水平面12aを滑動して水平面12aに続く上傾斜面12bへと瞬時に移行して、上傾斜面12bと点接触状態で上傾斜面12b上を案内されて抵抗なく移動する。 Now, the hidden slide fastener 21 when the fastener element 1 is in the normal meshing state shown in FIG. 4 is operated, for example, an airbag device (not shown) is started to inflate and deploy, and its strong inflation When the pressure acts on each fastener element 1, the fastener element 1 in the meshing state instantaneously shifts to the meshing release state shown in FIG. That is, due to the inflation pressure at the start of inflation of the airbag, a strong pulling force acts in the separating direction of the left and right fastener tapes 22, so that the left and right fastener elements 1 respectively move in the pulling direction of the fastener tape 22 around the core string portion 25. It turns quickly. At this time, the tip end portion of the mating head 6 that is slightly in surface contact with the horizontal surface 12a of the second tape holding portion 4 slides on the horizontal surface 12a and instantaneously shifts to the upper inclined surface 12b following the horizontal surface 12a. Then, it is guided on the upper inclined surface 12b in a point contact state with the upper inclined surface 12b and moves without resistance.
 このように噛合頭部6の先端部分が上傾斜面12bに移行すると、噛合頭部6の先端部分が上傾斜面12bに案内されて抵抗なく滑動しやすくなり、各ファスナーエレメント1は、その中心部である芯紐部25を中心としてファスナーテープ22の引っ張り方向に速やかに回動し、各ファスナーエレメント1の噛合が容易に解除される。ファスナーエレメント1が回転したとき、噛合頭部6の下面に設けた湾曲面6aと上傾斜面12bとが対面しても、湾曲面6aと上傾斜面12bとの間の隙間が広く確保しされ、回転時に湾曲面6aと上傾斜面12bとの干渉が回避できる。 When the tip portion of the meshing head 6 moves to the upper inclined surface 12b in this way, the tip portion of the meshing head 6 is guided by the upper inclined surface 12b and easily slides without resistance, and each fastener element 1 has its center The core string portion 25 as a center is quickly rotated in the pulling direction of the fastener tape 22, and the engagement of each fastener element 1 is easily released. When the fastener element 1 rotates, even if the curved surface 6a provided on the lower surface of the meshing head 6 and the upper inclined surface 12b face each other, a wide gap is ensured between the curved surface 6a and the upper inclined surface 12b. During the rotation, interference between the curved surface 6a and the upper inclined surface 12b can be avoided.
 その結果、エアバッグ装置の作動時に第2テープ挟持部4及び噛合部5にエアバッグの膨張圧による過大な力がかからず、ファスナーエレメント1が破断することがなくなる。因みに、特許文献1~3に記載された隠しスライドファスナーの展開に必要な横引き力は250N/2.54cmを越えるのに対して、本発明の横引き力は60~200N/2.54cmと低い力で展開する。 As a result, an excessive force due to the inflation pressure of the airbag is not applied to the second tape clamping portion 4 and the meshing portion 5 when the airbag device is operated, and the fastener element 1 is not broken. Incidentally, the lateral pulling force required for the deployment of the hidden slide fastener described in Patent Documents 1 to 3 exceeds 250 N / 2.54 cm, whereas the lateral pulling force of the present invention is 60 to 200 N / 2.54 cm. Deploy with low force.
 図12は、この第1実施例の変形例を示している。この変形例によれば、前記水平面12aと前記上傾斜面12bとを屈曲して連続させるのではなく、水平面12aと上傾斜面12bとの屈曲切替部である中間部12cを屈曲面とせずに、上傾斜面12bを水平面12aに続く下方に膨出する湾曲面に形成することができる。 FIG. 12 shows a modification of the first embodiment. According to this modification, the horizontal surface 12a and the upper inclined surface 12b are not bent and continued, but the intermediate portion 12c that is a bending switching portion between the horizontal surface 12a and the upper inclined surface 12b is not used as a bent surface. The upper inclined surface 12b can be formed as a curved surface bulging downward following the horizontal surface 12a.
 図6は、本発明に係るファスナーエレメントの第2実施例を示している。本実施例においても、ファスナーエレメント1の主要部の構造は上記第1実施例と実質的に変わるところがない。本実施例における特徴的構成は、ファスナーエレメント1の噛合頭部6と首部7との相対的な寸法関係を規定している点にある。そのため、以下の説明では、上記第1実施例と実質的に対応する部分の名称及び符号には、同一の名称と符号とを使用する。 FIG. 6 shows a second embodiment of the fastener element according to the present invention. Also in the present embodiment, the structure of the main part of the fastener element 1 is not substantially different from that of the first embodiment. The characteristic configuration in the present embodiment is that a relative dimensional relationship between the meshing head 6 and the neck 7 of the fastener element 1 is defined. Therefore, in the following description, the same names and symbols are used for the names and symbols of the portions substantially corresponding to the first embodiment.
 図6に示すように、ファスナーエレメント1の噛合部5は、平面視で楕円形をなす噛合頭部6と、その噛合頭部6の長径部から中央で細く括れてC字状基部2の先端面の肩部8へと延び同肩部8に連結する首部7とを有している。この第2実施例によれば、噛合頭部6の噛合方向(同図の上下方向)の最大幅寸法をW1として、首部7の同方向の最小幅寸法をW2としたとき、前記最大幅寸法W1に対する前記最小幅寸法W2の比の値W2/W1を0.55~0.75の範囲に規定している。この比の値にW2/W1が0.55より小さいと、首部7の括れが大き過ぎてファスナーエレメント同士の横引き強度が高くなり、エアバッグ装置の作動によっても容易には噛合が解除できず、噛合部周辺部に過大な荷重がかかって損壊しやすくなる。W2/W1が0.75を越えると、首部7の括れが小さ過ぎてファスナーエレメント同士の横引き強度が弱くなり過ぎてしまい、エアバッグ装置が作動しいときでもファスナーエレメント同士の噛合が簡単に外れてしまう。 As shown in FIG. 6, the engagement portion 5 of the fastener element 1 includes an engagement head 6 that is elliptical in plan view, and a distal end of the C-shaped base 2 that is narrowly tied in the center from the long diameter portion of the engagement head 6. A neck 7 extending to the shoulder 8 of the face and connected to the shoulder 8; According to the second embodiment, when the maximum width dimension in the meshing direction of the meshing head 6 (vertical direction in the figure) is W1, and the minimum width dimension in the same direction of the neck portion 7 is W2, the maximum width dimension is set. A value W2 / W1 of the ratio of the minimum width W2 to W1 is defined in the range of 0.55 to 0.75. If the ratio W2 / W1 is smaller than 0.55, the neck 7 is too tight and the lateral pulling strength between the fastener elements becomes high, and the engagement cannot be easily released even by the operation of the airbag device. In addition, an excessive load is applied to the peripheral portion of the meshing portion, and it becomes easy to break. When W2 / W1 exceeds 0.75, the neck portion 7 is too tightly bound and the pulling strength between the fastener elements becomes too weak, and even when the airbag device is in operation, the engagement between the fastener elements is easily disengaged. End up.
 本実施例にあっては、ファスナーエレメント1の材質にはPOMが使われており、前記比の値W2/W1は0.69に設定されており、そのファスナーエレメント同士の横引き強度は100N/2.54cmであって、W2/W1の値が0.48の同一材質からなる通常のファスナーエレメントの横引き強度250N/2.54cmと比較すると1/5の低い強度となる。本実施例における横引き強度は100N/2.54cmの値は、エアバッグ装置の作動時に図示せぬシートカバーの展開部における引裂き展開の抵抗も減少させることができ、しかも通常の使用ではファスナーエレメントの噛合が維持される強度である。 In this embodiment, POM is used as the material of the fastener element 1, the ratio value W2 / W1 is set to 0.69, and the lateral pulling strength between the fastener elements is 100 N / Compared with the lateral pulling strength of a normal fastener element made of the same material having a W2 / W1 value of 0.48, which is 2.54 cm, the strength is 1/5 lower. When the lateral pulling strength in this embodiment is 100 N / 2.54 cm, the resistance of tearing and unfolding at the unfolded portion of the seat cover (not shown) can be reduced during the operation of the airbag apparatus, and the fastener element can be used in normal use. It is the intensity | strength with which a meshing is maintained.
 図7及び図8は、隠しスライドファスナー用の本発明の第3実施例となるファスナーエレメントと、その回動時の状態を示している。
 本実施例にあって、上記第1及び第2実施例と異なるところは、第1及び第2実施例では相手方の第2テープ挟持部4の係合面12と面接触する相手方の噛合頭部6の上面13(図2の上面)は平面に形成され、その上面13と長円状の周側面とが互いに直交しているのに対して、本実施例では、図7及び図8に示すように前記噛合頭部6の少なくとも先端部の稜線部分が噛合方向に直交して面取部6bを形成している。面取部6bとしては、湾曲面とすることが挙げられるが、図13に示すように噛合頭部6の先端に向けてした傾斜する傾斜面であってもよい。また、上記実施例では第2テープ挟持部4の前記係合面12の基端から途中までが水平面12aとされ、その途中から先端にかけて上傾斜面12bとしているが、本実施例では前述の面取部6bを形成することに伴い、前記係合面12の基端から先端にかけて同一水平面12aに形成している。
7 and 8 show a fastener element which is a third embodiment of the present invention for a hidden slide fastener, and a state when the fastener element is rotated.
In this embodiment, the difference from the first and second embodiments is that in the first and second embodiments, the mating head of the other party that is in surface contact with the engagement surface 12 of the second tape clamping part 4 of the other party. The upper surface 13 of FIG. 6 (the upper surface of FIG. 2) is formed in a plane, and the upper surface 13 and the oval peripheral side surface are orthogonal to each other. As described above, at least the ridge line portion at the tip of the meshing head 6 is perpendicular to the meshing direction to form the chamfered portion 6b. The chamfered portion 6b may be a curved surface, but may be an inclined surface inclined toward the tip of the meshing head 6 as shown in FIG. In the above embodiment, the horizontal surface 12a is formed from the base end to the middle of the engagement surface 12 of the second tape holding portion 4 and the upper inclined surface 12b is formed from the middle to the front end. Along with the formation of the catch portion 6b, the engagement surface 12 is formed on the same horizontal surface 12a from the proximal end to the distal end.
 本実施例が前記構成を採用することにより、ファスナーエレメント1同士の通常噛合時は、図7に示すように、左右のファスナーエレメント1における第2テープ挟持部4の前記水平面12aと相手方の噛合頭部6の面取部6bを除く半部近くの表面とが面接触している。この面接触の面積は、ファスナーエレメント1の大きさや要求される噛合強度の大きさにより異なり、一律に決めることはできないが、本発明の隠しスライドファスナー21が、例えばエアバッグ装置を装着した車両用座席シートの図示せぬシートカバーに適用されているときも、左右のファスナーテープ22に互いが離間する方向への通常の引っ張り力や、噛合状態にあるファスナーエレメント1に対する突き上げ力などの外力が働いても、ファスナーエレメント1を相手方の第2テープ挟持部4の水平面12aで押さえ付けて、その噛合姿勢を崩すことなく維持するに十分な面積であればよい。 By adopting the above-described configuration in this embodiment, during normal engagement of the fastener elements 1, as shown in FIG. 7, the horizontal surface 12 a of the second tape clamping portion 4 in the left and right fastener elements 1 and the mating head of the other party The surface of the part 6 except the chamfered part 6b is in surface contact with the surface near the half part. The area of this surface contact varies depending on the size of the fastener element 1 and the required engagement strength, and cannot be determined uniformly. However, the hidden slide fastener 21 of the present invention is for a vehicle equipped with an airbag device, for example. Even when applied to a seat cover (not shown) of the seat, an external force such as a normal pulling force in the direction in which the left and right fastener tapes 22 are separated from each other and a push-up force with respect to the engaged fastener element 1 is applied. However, the area may be sufficient to hold the fastener element 1 with the horizontal surface 12a of the second tape holding portion 4 of the other party and maintain the meshing posture without breaking it.
 いま、ファスナーエレメント1が図7に示す通常の噛合状態にあるときの隠しスライドファスナー21に、例えば図示せぬエアバッグ装置が作動して、エアバッグが膨張展開を開始して、その強大な膨張圧が各ファスナーエレメント1に作用すると、本実施例にあっても上記第1及び第2実施例と同様に、噛合状態にあるファスナーエレメント1は瞬時に図8に示す噛合解除状態へと移行する。すなわち、エアバッグの膨張開始時の膨張圧により、左右のファスナーテープ22の離間方向に強力な引っ張り力が働き、左右のファスナーエレメント1がそれぞれファスナーテープ22の引っ張り方向に回動する。このとき、第2テープ挟持部4の水平面12aと広く面接触していた相手方の噛合頭部6の先端の面取部6bが相手方の係合面12上を支障なく回転して、図8に示すように、ファスナーエレメント1がC字状基部2の中心部を中心としてファスナーテープ22の引っ張り方向に円滑に回動して、噛合するファスナーエレメント1の噛合を解除する。 Now, the hidden slide fastener 21 when the fastener element 1 is in the normal meshing state shown in FIG. 7, for example, an airbag device (not shown) is activated, and the airbag starts inflating and deploying. When pressure is applied to each fastener element 1, even in this embodiment, the fastener element 1 in the meshing state immediately shifts to the meshing release state shown in FIG. 8 as in the first and second embodiments. . That is, due to the inflation pressure at the start of inflation of the airbag, a strong pulling force acts in the direction in which the left and right fastener tapes 22 are separated, and the left and right fastener elements 1 rotate in the direction in which the fastener tape 22 is pulled. At this time, the chamfered portion 6b at the tip of the mating head 6 that has been in surface contact with the horizontal surface 12a of the second tape clamping portion 4 rotates on the mating engagement surface 12 without any trouble, and FIG. As shown, the fastener element 1 smoothly rotates in the pulling direction of the fastener tape 22 around the central portion of the C-shaped base 2 to release the meshing of the meshing fastener element 1.
 なお、以上の説明では第1~第3実施例を個別に説明しているが、本発明にあっては、これらの実施例を適宜組み合わせることもできる。例えば、第2実施例において第1実施例を組み合わせることができ、或いは第1実施例における上傾斜面12bを形成するとともに、噛合頭部の上面先端部に面取部6bを形成することもできる。更には、図示は省略するが、前記面取部6bに代えて上傾斜面とすることもできる。この場合、水平面12aと面接触する相手方の噛合頭部6の上面13との間で所要の接触面積を確保すべく、上傾斜面12bの起点である係合面12の中間部を第2テープ挟持部4の先端側へと僅かに変位させるとよい。また、例えば第1~第3実施例の特徴的構成を全て組み合わせてもよい。 In the above description, the first to third embodiments are individually described. However, in the present invention, these embodiments can be appropriately combined. For example, the first embodiment can be combined with the second embodiment, or the upper inclined surface 12b in the first embodiment can be formed, and the chamfered portion 6b can be formed at the top end of the upper surface of the meshing head. . Furthermore, although not shown in the drawings, it is possible to use an upper inclined surface instead of the chamfered portion 6b. In this case, in order to ensure a required contact area between the upper surface 13 of the mating head 6 that is in surface contact with the horizontal surface 12a, the intermediate portion of the engagement surface 12 that is the starting point of the upper inclined surface 12b is used as the second tape. It is good to slightly displace to the front end side of the clamping part 4. For example, all the characteristic configurations of the first to third embodiments may be combined.
 こうした構成を備えた本発明のファスナーエレメント1を、一対のファスナーテープ22の各エレメント取付縁部に所定間隔で列設して図9に示すファスナーストリンガー23を形成した後、ファスナーテープ22のエレメント取付縁部側を、図4に示すように略U字状に折り返した状態でファスナーエレメント1のエレメント列にスライダー24を挿通させて、図9に示すような隠しスライドファスナー21を得る。ここで、図10は、本実施例に係る隠しスライドファスナー21をテープ表面側から見た平面図であり、図9は、同隠しスライドファスナー21をテープ裏面側から見た背面図である。 The fastener elements 1 of the present invention having such a configuration are arranged at predetermined intervals on the element attachment edges of the pair of fastener tapes 22 to form the fastener stringer 23 shown in FIG. The hidden slide fastener 21 as shown in FIG. 9 is obtained by inserting the slider 24 through the element row of the fastener element 1 with the edge side folded back in a substantially U shape as shown in FIG. Here, FIG. 10 is a plan view of the hidden slide fastener 21 according to the present embodiment as viewed from the tape front side, and FIG. 9 is a rear view of the hidden slide fastener 21 as viewed from the tape rear surface side.
 ファスナーエレメント1のファスナーテープ22への取り付けに関しては、従来一般的に用いられている手段によって行うことができ、例えば、ファスナーテープ22のエレメント取付縁部に合成樹脂を射出成形することによって、所定形状を有する合成樹脂製のファスナーエレメント1をファスナーテープ22に装着することができる。この場合、ファスナーエレメント1の材質となる合成樹脂として、例えばポリアセタール、ポリブチレンテレフタレート、ナイロン等を用いることができる。またその他に、銅合金、ニッケル合金、アルミ等のダイキャストを行うことによっても、金属製のファスナーエレメント1をファスナーテープ22に装着することも可能である。 The fastener element 1 can be attached to the fastener tape 22 by means conventionally used. For example, a synthetic resin is injection-molded on the element attachment edge of the fastener tape 22 to obtain a predetermined shape. The fastener element 1 made of synthetic resin having the above can be attached to the fastener tape 22. In this case, for example, polyacetal, polybutylene terephthalate, nylon or the like can be used as the synthetic resin that is the material of the fastener element 1. In addition, the metal fastener element 1 can be attached to the fastener tape 22 by performing die casting of copper alloy, nickel alloy, aluminum or the like.
 このようなファスナーエレメント1を用いて得られた隠しスライドファスナー21は、図4に示すように、ファスナーエレメント1の円形抱持孔14でファスナーテープ22の芯紐部25を抱持するとともに、ファスナーエレメント1の第1テープ挟持部3と第2テープ挟持部4とでファスナーテープ22のエレメント取付縁部を挟持している。 As shown in FIG. 4, the hidden slide fastener 21 obtained using such a fastener element 1 holds the core string portion 25 of the fastener tape 22 in the circular holding hole 14 of the fastener element 1, and the fastener The element attachment edge of the fastener tape 22 is clamped by the first tape clamping portion 3 and the second tape clamping portion 4 of the element 1.
 また、ファスナーテープ22は、第1テープ挟持部3の先端で略U字状に折り返されており、スライダー24を摺動させて左右のファスナーテープ22に取り付けたファスナーエレメント1同士を噛合させることにより、図4に示すように、ファスナーテープ22の略U字状に折り返された折返端面26同士を密着させる。これにより、隠しスライドファスナー21は、噛合状態のファスナーエレメント1をファスナーテープ22の表面側から見えなくすることができる。 Further, the fastener tape 22 is folded back in a substantially U shape at the tip of the first tape sandwiching portion 3, and the slider 24 is slid to engage the fastener elements 1 attached to the left and right fastener tapes 22 with each other. As shown in FIG. 4, the folded end surfaces 26 of the fastener tape 22 folded in a substantially U shape are brought into close contact with each other. Thereby, the hidden slide fastener 21 can make the engaged fastener element 1 invisible from the surface side of the fastener tape 22.
 この隠しスライドファスナー21は、ファスナーエレメント1のC字状基部2の第1テープ挟持部3側の後端部湾曲面及び第2テープ挟持部4側の後端部湾曲面である第1外周面18及び第2外周面19がそれぞれ円筒面とされていることから、スライダー24を摺動させたときに、ファスナーエレメント1とスライダー24との干渉を抑えて良好な摺動特性を得ることができ、更には、以下のような効果も得ることができる。 The hidden slide fastener 21 is a first outer peripheral surface which is a rear end curved surface of the C-shaped base 2 of the fastener element 1 on the first tape clamping portion 3 side and a rear end curved surface of the second tape clamping portion 4 side. Since the 18 and the second outer peripheral surface 19 are respectively cylindrical surfaces, when the slider 24 is slid, interference between the fastener element 1 and the slider 24 can be suppressed and good sliding characteristics can be obtained. Furthermore, the following effects can also be obtained.
 例えば、スライダー24を摺動させて左右のファスナーエレメント1を噛合させる際に、左右のファスナーテープ22に外側に向けての引張り応力が作用している場合、図11に仮想線で示すように、ファスナーエレメント1がスライダー24のファスナーエレメント通路27に対して傾いた姿勢で進入することがある。この場合、ファスナーエレメント1がスライダー24のファスナーエレメント通路27を通過する際に、ファスナーエレメント1の第2外周面19がスライダー24の下板29に接し、また第1外周面18がスライダー24の逆L字状のフランジ30に接してスライダー24の後口側に向けて滑動する。その際に、スライダー24のファスナーエレメント通路27内の形状によっては、第2外周面19をスライダー24の下板29に接触させ、また第1外周面18をスライダー24のフランジ30に接触させることで、ファスナーエレメント通路27内でファスナーエレメント1を回動させ、ファスナーエレメント1の姿勢を図12の実線で示すような噛合に適した姿勢に傾倒させることができる。 For example, when the slider 24 is slid and the left and right fastener elements 1 are engaged with each other, if a tensile stress is applied to the left and right fastener tapes 22 toward the outside, as shown by phantom lines in FIG. The fastener element 1 may enter in an inclined posture with respect to the fastener element passage 27 of the slider 24. In this case, when the fastener element 1 passes through the fastener element passage 27 of the slider 24, the second outer peripheral surface 19 of the fastener element 1 contacts the lower plate 29 of the slider 24, and the first outer peripheral surface 18 is opposite to the slider 24. It slides toward the rear opening side of the slider 24 in contact with the L-shaped flange 30. At that time, depending on the shape of the fastener element passage 27 of the slider 24, the second outer peripheral surface 19 is brought into contact with the lower plate 29 of the slider 24, and the first outer peripheral surface 18 is brought into contact with the flange 30 of the slider 24. The fastener element 1 can be rotated in the fastener element passage 27 so that the posture of the fastener element 1 can be tilted to a posture suitable for meshing as shown by the solid line in FIG.
 すなわち、本実施例の隠しスライドファスナー21によれば、たとえファスナーエレメント1がスライダー24のファスナーエレメント通路27に対して傾き噛合に不適当な姿勢で進入するような状況にあっても、ファスナーエレメント通路27内でファスナーエレメント1の姿勢を傾倒させることにより左右のファスナーエレメント1を確実に噛合させて、安定した噛合状態を確保することができるといった利点も得ることが可能となる。 That is, according to the hidden slide fastener 21 of the present embodiment, even if the fastener element 1 enters the fastener element passage 27 of the slider 24 in an inappropriate posture for tilting engagement, the fastener element passage By tilting the posture of the fastener element 1 within 27, the right and left fastener elements 1 can be surely engaged with each other, and an advantage that a stable engagement state can be secured can be obtained.
 特に、本実施例では、ファスナーエレメント1の第2外周面19が、前述のように第1外周面18よりも大きな曲率半径を有している。即ち、ファスナーエレメント1を、上述のようにスライダー24内で回動させて噛合に適切な姿勢に傾倒させる場合、第2外周面19の方が、第1外周面18よりもスライダーと接触する範囲が広くなる。このため、第2外周面19が第1外周面18よりも大きな曲率半径を有していることにより、ファスナーエレメント1のファスナーエレメント通路27内での回動を円滑に行い、ファスナーエレメント1を効率的に、また安定して傾倒させることができる。 In particular, in the present embodiment, the second outer peripheral surface 19 of the fastener element 1 has a larger radius of curvature than the first outer peripheral surface 18 as described above. That is, when the fastener element 1 is rotated in the slider 24 as described above and tilted to an appropriate posture for meshing, the second outer peripheral surface 19 is in contact with the slider rather than the first outer peripheral surface 18. Becomes wider. Therefore, since the second outer peripheral surface 19 has a larger radius of curvature than the first outer peripheral surface 18, the fastener element 1 can be smoothly rotated in the fastener element passage 27, and the fastener element 1 can be efficiently used. And can be tilted stably.

Claims (9)

  1.  芯紐部(25)を抱持するC字状基部(2) と、同C字状基部(2) の各先端から略平行して同一方向に延び、その各対向面にファスナーテープ(22)の側縁部を挟持する第1及び第2テープ挟持面を有する平板状の第1及び第2テープ挟持部(3,4) と、前記C字状基部(2) の先端及び前記第2テープ挟持部(4) の前記第2テープ挟持面とは反対側の裏面間に一体に形成された噛合部(5) とを備えてなり、同噛合部(5) は前記第2テープ挟持部(4) の前記裏面に一体化した首部(7) と、同首部(7) から前記第2テープ挟持部(4) の先端面(16)を越えて延出する噛合頭部(6) と、前記C字状基部(2) の先端面からなる肩部(8) とを有してなる隠しスライドファスナー用のファスナーエレメント(1) であって、  前記第2テープ挟持部(4) の前記裏面係合面(12)と相手方の前記噛合頭部(6) とが、前記C字状基部(2) の中心を中心として相対的に回動しやすい形状に形成されてなることを特徴とする隠しスライドファスナー用のファスナーエレメント。 A C-shaped base (2) 抱 that holds the core string portion (25) and a C-shaped base (2) 延 び that extends in the same direction from each tip of the C-shaped base (2) 、, and has a fastener tape (22) on each opposing surface Plate-like first and second tape clamping portions (3, 4) having first and second tape clamping surfaces for clamping the side edge portions thereof, the tip of the C-shaped base portion (2), and the second tape The holding part (4) is provided with a meshing part (5) which is integrally formed between the back surfaces of the side opposite to the second tape clamping surface, and the meshing part (5) is provided with the second tape clamping part ( 4) a neck (7) collar integrated with the back surface of the collar, and a meshing head (6) collar extending from the neck (7) collar over the tip surface (16) of the second tape clamping part (4) collar; A fastener element (1) for a hidden slide fastener having a shoulder portion (8) か ら comprising the tip surface of the C-shaped base (2), and the back surface of the second tape clamping portion (4) Engagement surface (12) and counterpart Serial and coupling head (6), the fastener element for a concealed slide fastener characterized by comprising formed relatively rotated easily shape around the center of the C-shaped base part (2).
  2.  前記首部(7) の噛合方向の最小幅寸法W2に対する前記噛合頭部(6) の噛合方向の最大幅寸法W1の比の値W2/W1が0.55~0.75である請求の範囲第1~3項のいずれかに記載の隠しスライドファスナー用エレメント。 The ratio W2 / W1 of the maximum width dimension W1 in the meshing direction of the meshing head (6) collar to the minimum width dimension W2 in the meshing direction of the neck section (7) collar is 0.55 to 0.75. The element for a hidden slide fastener according to any one of items 1 to 3.
  3.  前記相対的に回動しやすい形状が、前記第2テープ挟持部(4) の前記第2テープ挟持面とは反対側の裏面の前記首部(7) を除く係合面(12)が、同係合面(12)のC字状基部(2) 側の基端から中間部(12c) までが第2テープ挟持部(4) の下面と平行な水平面(12a) とされ、前記中間部(12c) を起点として先端までが上方へ向けて屈曲する屈曲面とされてなることを特徴とする請求の範囲第1又は2項に記載の隠しスライドファスナー用エレメント。 The relatively rotatable shape is such that the engagement surface (12) excluding the neck (7) collar on the back surface opposite to the second tape clamping surface of the second tape clamping section (4) collar is the same. The C-shaped base (2) of the engagement surface (12) from the base end of the flange side to the intermediate part (12c) is a horizontal plane (12a) which is parallel to the lower surface of the second tape clamping part (4), and the intermediate part ( 12c) The element for a hidden slide fastener according to claim 1 or 2, wherein the element is a bent surface that is bent upward from the flange to the tip.
  4.  前記屈曲面の前記起点が、相手方ファスナーエレメント(1) との噛合時における相手方ファスナーエレメント(1) の噛合頭部(6) の先端部近傍である請求の範囲第3項記載の隠しスライドファスナー用エレメント。 The hidden slide fastener according to claim 3, wherein the starting point of the bent surface is in the vicinity of the front end portion of the mating head (6) of the mating fastener element (1) when mating with the mating fastener element (1). element.
  5.  前記屈曲面が水平面(12a) に続く上傾斜する上傾斜面(12b) である請求の範囲第4項記載の隠しスライドファスナー用エレメント。 The element for a hidden slide fastener according to claim 4, wherein the bent surface is an upper inclined surface (12b) which is inclined upward following the horizontal surface (12a).
  6.  前記屈曲面が下方に膨出して湾曲する湾曲面である請求の範囲第4項記載の隠しスライドファスナー用エレメント。 The element for a hidden slide fastener according to claim 4, wherein the bent surface is a curved surface that bulges downward and curves.
  7.  前記相対的に回動しやすい形状が、前記噛合頭部(6) の先端稜線部が面取りされた面取部(6b)とされてなることを特徴とする請求の範囲第1又は2項に記載の隠しスライドファスナー用エレメント。 The range according to claim 1 or 2, characterized in that the relatively easy-to-turn shape is a chamfered portion (6b) in which a tip ridge line portion of the meshing head (6) is chamfered. The hidden slide fastener element described.
  8.  前記相対的に回動しやすい形状が、前記噛合頭部(6) の前記第2テープ挟持部(4) 側とは反対側の表面が先端に向けて上方に傾斜する上傾斜面又は凸状の湾曲する湾曲面(6a)の形状とされてなることを特徴とする請求の範囲第1又は第2項に記載の隠しスライドファスナー用エレメント。 The relatively easy-to-turn shape is an upward inclined surface or convex shape in which the surface of the meshing head (6) opposite to the second tape clamping portion (4) is inclined upward toward the tip. The element for a hidden slide fastener according to claim 1 or 2, characterized in that the curved surface (6a) is curved.
  9.  一対のファスナーテープ(22)のエレメント取付縁部に沿って、請求の範囲第1~8項のいずれかに記載の複数の前記ファスナーエレメント(1) が所定間隔で列設され、前記ファスナーテープ(22)のエレメント取付縁部を略U字状に折り返した状態で前記ファスナーエレメント(1) にスライダー(24)が挿通されてなることを特徴とする隠しスライドファスナー。 A plurality of the fastener elements (1) ridges according to any one of claims 1 to 8 are arranged at predetermined intervals along an element mounting edge of the pair of fastener tapes (22), and the fastener tape ( A hidden slide fastener characterized in that a slider (24) is inserted into the fastener element (1) で with the element mounting edge of 22) folded back into a substantially U shape.
PCT/JP2009/051969 2009-02-05 2009-02-05 Fastener element for concealed slide fasteners WO2010089870A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200980156304.4A CN102307491B (en) 2009-02-05 2009-02-05 Fastener element for concealed slide fasteners
PCT/JP2009/051969 WO2010089870A1 (en) 2009-02-05 2009-02-05 Fastener element for concealed slide fasteners
JP2010549310A JP5501255B2 (en) 2009-02-05 2009-02-05 Hidden slide fastener using the same fastener element as the fastener element for the hidden slide fastener
TW098122137A TWI391103B (en) 2009-02-05 2009-06-30 Concealed zipper buckle components and hidden zipper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/051969 WO2010089870A1 (en) 2009-02-05 2009-02-05 Fastener element for concealed slide fasteners

Publications (1)

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WO2010089870A1 true WO2010089870A1 (en) 2010-08-12

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PCT/JP2009/051969 WO2010089870A1 (en) 2009-02-05 2009-02-05 Fastener element for concealed slide fasteners

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JP (1) JP5501255B2 (en)
CN (1) CN102307491B (en)
TW (1) TWI391103B (en)
WO (1) WO2010089870A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017185209A (en) * 2016-03-31 2017-10-12 Ykk株式会社 Conceal type slide fastener

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103169205B (en) * 2012-06-27 2016-01-20 福建浔兴拉链科技股份有限公司 A kind of zipper tooth and adopt the slide fastener of this zipper tooth
CN103181658B (en) * 2013-03-27 2016-02-10 福建浔兴拉链科技股份有限公司 A kind of manufacture craft of metallic invisible zipper
CN110087502B (en) * 2016-12-26 2021-11-23 Ykk株式会社 Slide fastener
CN115644570A (en) * 2022-10-20 2023-01-31 华福森服饰(深圳)有限公司 Zipper tooth and zipper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119906U (en) * 1974-07-29 1976-02-13
JPS5729304A (en) * 1970-02-14 1982-02-17 Risuta As Slide fastener

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078278A (en) * 1976-04-05 1978-03-14 Textron Inc. Slide fastener
JP2006320642A (en) * 2005-05-20 2006-11-30 Ykk Corp Zipper chain
JP4689454B2 (en) * 2005-12-06 2011-05-25 Ykk株式会社 Fastener element and hidden slide fastener
GB2445156B (en) * 2006-03-07 2010-04-28 Ykk Europ Ltd Concealed slide fastener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5729304A (en) * 1970-02-14 1982-02-17 Risuta As Slide fastener
JPS5119906U (en) * 1974-07-29 1976-02-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017185209A (en) * 2016-03-31 2017-10-12 Ykk株式会社 Conceal type slide fastener
US9918527B2 (en) 2016-03-31 2018-03-20 Ykk Corporation Concealable slide fastener

Also Published As

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TWI391103B (en) 2013-04-01
JPWO2010089870A1 (en) 2012-08-09
CN102307491B (en) 2014-04-09
TW201029594A (en) 2010-08-16
CN102307491A (en) 2012-01-04
JP5501255B2 (en) 2014-05-21

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