WO2012096375A1 - ホースクランプ - Google Patents
ホースクランプ Download PDFInfo
- Publication number
- WO2012096375A1 WO2012096375A1 PCT/JP2012/050596 JP2012050596W WO2012096375A1 WO 2012096375 A1 WO2012096375 A1 WO 2012096375A1 JP 2012050596 W JP2012050596 W JP 2012050596W WO 2012096375 A1 WO2012096375 A1 WO 2012096375A1
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- WO
- WIPO (PCT)
- Prior art keywords
- hose
- clamp
- clamp body
- piece
- operation piece
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/03—Self-locking elastic clips
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1457—Metal bands
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1457—Metal bands
- Y10T24/1459—Separate connections
- Y10T24/1461—One piece
- Y10T24/1463—Sheet metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/14—Bale and package ties, hose clamps
- Y10T24/1457—Metal bands
- Y10T24/1484—Spring closed band clamp
Definitions
- the present invention relates to a so-called holderless type hose clamp that can maintain its expanded diameter without using a holder among hose clamps for fastening a rubber hose or the like to a connection pipe.
- FIG. 16 is a perspective view showing a hose clamp.
- the hose clamp 100 includes a clamp main body 101 formed by bending a metal strip into an annular shape, and a width direction from the both ends of the clamp main body 101 toward the center (the axial direction of the clamp main body 101). ) And a pair of operation pieces 102A and 102B that stand up in the radial direction from the tip of the taper portion 106.
- a hose (not shown) can be tightened.
- the diameter of the clamp body 101 is increased when the operation pieces 102A and 102B are brought close to each other.
- a lock claw 103 is raised on the clamp body 101 near one operation piece 102A.
- a receiving portion 104 that removably engages the lock claw 103 is formed on the other operation piece 102B side, and the axial overlap of the clamp body 101 with respect to the one operation piece 102A during diameter expansion is performed.
- a cutout portion 105 to be avoided is formed.
- the clamp main body 101 is held in an expanded state by bringing the operating pieces 102A and 102B of the hose clamp 100 closer to each other in the circumferential direction with a pliers and engaging the lock claw 103 with the receiving portion 104. Further, when a hose is inserted into the clamp body 101 in the expanded diameter state and both the operation pieces 102A and 102B are brought close to the axial direction (width direction) of the clamp body 101 with a pliers, both operation pieces 102A and 102B are cut out.
- the lock claw 103 is disengaged from the receiving portion 104 by shifting in the width direction by an amount corresponding to the width of 105. Then, the clamp body 101 tightens the hose by the reduced diameter due to the elastic restoring force.
- the two operation pieces 102A and 102B are expanded in opposite directions in the axial direction (width direction) of the clamp body 101. It is expected that In such a case, when the hose is tightened with the hose clamp 100 as it is, the clamp main body 101 is assembled obliquely with respect to the hose, or a gap exists between both ends of the clamp main body 101, that is, between the tapered portions 106. There is a problem that assembly failure occurs when 100S is enlarged.
- the problem to be solved by the present invention is to provide a hose clamp that can prevent the assembly of the clamp body to the hose.
- the hose clamp which makes the summary the structure described in the claim. That is, according to the hose clamp according to the first aspect of the present invention, the hose clamp includes a clamp main body formed by bending a belt-shaped leaf spring material into an annular shape, and a pair of operation portions that stand up in the radial direction from both ends of the clamp main body.
- the hose can be tightened by reducing the diameter by the elastic restoring force of the clamp body, and the clamp body is expanded using elastic deformation by bringing the pair of operation parts close to each other.
- An engaging portion is formed on one operation portion side of the main body, and an engaging portion is formed on the other operation portion side of the clamp main body so as to be detachably engaged with the engaging portion.
- the clamp body is held in an expanded state by the engagement of the locking part, and when the diameter of the clamp body is reduced from the expanded state, the one operation part is brought closer to the other operation part. And the engagement of the locking portion with respect to the engagement portion is released by moving the clamp body in opposite directions in the axial direction of the clamp body, and the pair of operation portions are formed in a single leg shape.
- An expansion restricting portion that restricts the expansion of the clamp body on the one operation portion side in the direction opposite to the axial direction is provided, and the expansion restricting portion is formed in any one of the pair of operation portions.
- a clamp main body will be hold
- the clamp body is elastically restored. To reduce the diameter. Thereby, the hose is tightened by the elastic restoring force of the clamp body.
- the expansion restriction piece of the expansion restriction portion provided between the one operation portion side and the other operation portion side of the clamp body and the expansion thereof. Due to the contact with the part that can contact the opening restricting piece, the expansion in the opposite direction in the axial direction of the clamp body on the one operation portion side with respect to the other operation portion side is restricted. For this reason, it is possible to prevent the clamp body from being poorly assembled due to the clamp body being assembled obliquely with respect to the hose or the gap between both ends of the clamp body being enlarged. As a result, leakage of fluid in the hose due to poor assembly of the clamp body can be prevented.
- the clamp body has a side edge that is inclined with respect to a straight line extending in a circumferential direction, and the side edge that is inclined has a side edge of the hose.
- An inclination preventing portion is provided that prevents the side edge from inclining radially inward by contacting the hose during tightening. If comprised in this way, the inclination prevention part contact
- the expansion restricting piece is formed on the other operation portion, and a portion that can contact the expansion restricting piece is the locking portion.
- a leakage preventing portion that substantially contacts the axial direction of the clamp body and presses the hose when the hose is tightened. Yes. If comprised in this way, between the both ends of a clamp main body will contact
- substantially contact in this specification means contact or proximity.
- FIG. It is a front view which shows the free state of the hose clamp concerning Embodiment 1.
- FIG. It is an expanded view of a hose clamp. It is a perspective view which shows the peripheral part of a 1st operation piece. It is a perspective view which shows the peripheral part of a 2nd operation piece. It is a front view which shows the temporary assembly state of a hose clamp. It is a top view which shows the temporary assembly state of a hose clamp. It is a perspective view which shows the peripheral part of both the operation pieces in a temporary assembly state. It is a top view which shows the cancellation
- FIG. 1 It is a top view which shows the hose fastening state of a hose clamp. It is a top view which shows the effect
- FIG. 23 is a cross-sectional view taken along line XXIII-XXIII in FIG. 22. It is a side view which shows the peripheral part of the inclination prevention part concerning Embodiment 6.
- FIG. It is a XXV arrow directional view of FIG. It is a side view which shows the peripheral part of the inclination prevention part concerning Embodiment 7.
- FIG. 28 is a cross-sectional view taken along the line XXVIII-XXVIII in FIG. It is a side view which shows the peripheral part of the inclination prevention part concerning Embodiment 9.
- FIG. It is a side view which shows the peripheral part of the inclination prevention part concerning Embodiment 10.
- FIG. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. 30. It is a side view which shows the peripheral part of the inclination prevention part concerning Embodiment 11.
- FIG. It is a XXXIII line arrow directional view of FIG.
- FIG. 1 is a front view showing a free state of the hose clamp
- FIG. 2 is a development view of the hose clamp.
- a blank 11 made of a metal strip-shaped leaf spring material is formed by press molding based on the developed shape of the hose clamp, and by bending the blank 11, the hose clamp 10 ( 1) is formed.
- reference numerals corresponding to the respective parts of the hose clamp 10 are attached.
- the hose clamp 10 includes a clamp body 12 formed by bending the main portion of the blank 11 into an annular shape, and both ends of the blank 11 radially outward from both ends of the clamp body 12. It consists of a pair of operation pieces 13 and 21 bent upright in the direction. Both the operation pieces 13 and 21 are each formed in a single leg shape.
- the clamp body 12 is expanded in diameter using elastic deformation when the operating pieces 13 and 21 are brought close to each other. Further, the hose can be tightened when the diameter of the clamp body 12 is reduced from the expanded state by an elastic restoring force. Both the operation pieces 13 and 21 correspond to the “operation unit” in the present specification.
- first operation piece 13 is referred to as a “first operation piece 13”
- second operation piece 21 is referred to as a “second operation piece 21”.
- orientation in the hose clamp 10 is determined with reference to the front view of FIG.
- the front-rear direction of the clamp body 12 corresponds to an “axial direction” and a “width direction”.
- the clamp body 12 is formed so as to gradually taper from the center in the circumferential direction toward the end on the side of the operation pieces 13 and 21. Specifically, as shown in FIG. 2, in the blank 11, the front side edge 12 a of the half part on the first operation piece 13 side of the clamp body 12 is formed in a straight line perpendicular to the center line 11 ⁇ / b> L of the blank 11. . Further, the rear side edge (reference numeral 12h) of the half body portion of the clamp body 12 on the first operation piece 13 side is directed from the vicinity of the center portion of the clamp body 12 toward the front end portion side of the first operation piece 13 side.
- the base side taper portion 12b and the tip side taper portion 12c form a rear edge 12h in a concave shape. That is, the tip side taper portion 12c has a gentler taper shape than the base side taper portion 12b.
- the half body portion on the second operation piece 21 side is formed in a point-symmetrical manner around the center point 11C of the blank 11. .
- a two-step tapered front side edge (reference numeral 12i) having a base side taper part 12e and a tip side taper part 12f extending toward the tip part side on the side of the piece 21 is formed.
- the second operation piece 21 is formed in a wide shape having a front side edge located on the same plane as the front side edge 12a of the half part of the clamp body 12 on the first operation piece 13 side.
- the shape of the clamp body 12 is brought close to a shape that conforms to the Castiliano theorem. Can do. For this reason, the roundness accompanying the change of the internal diameter of the clamp main body 12 can be improved, and surface pressure distribution can be equalized.
- the rear side edge 12h of the half body part on the first operation piece 13 side of the clamp body 12 and the front side edge 12i of the half part part on the second operation piece 21 side are not limited to a two-step taper shape. A step taper may be formed.
- the rear side edge 12h and the front side edge 12i are side edges that are inclined with respect to a straight line orthogonal to the center line 11L of the blank 11, the "inclined side edges” and “inclined” referred to in this specification. It corresponds to a “shaped front side edge” or “an inclined rear side edge”.
- the rear side edge 12 h and the front side edge 12 i correspond to side edges that are inclined with respect to a straight line extending in the circumferential direction of the clamp body 12.
- the end on the first operation piece 13 side and the end on the second operation piece 21 side are connected to the clamp body 12. They are opposed to each other with a crossing state in the axial direction (width direction). That is, the clamp body 12 is bent into a hollow cylindrical shape so that the end on the first operation piece 13 side is positioned in front of the end on the second operation piece 21 side (the front side in FIG. 1). Has been. Moreover, in the free state (refer FIG. 1) of the hose clamp 10, both the operation pieces 13 and 21 will be in the neutral state which opposes in a mutually parallel state.
- FIG. 3 is a perspective view showing a peripheral portion of the first operation piece
- FIG. 4 is a perspective view showing a peripheral portion of the second operation piece.
- a locking claw 14 is formed on the rear side portion of the end portion of the clamp body 12 on the first operation piece 13 side.
- the locking claw 14 is formed by cutting and raising the clamp body 12 outward in the radial direction.
- the locking claw 14 corresponds to a “locking portion” in this specification.
- a guide edge 15 that is located on the first operation piece 13 side with respect to the locking claw 14 is formed on the rear side portion of the end portion on the first operation piece 13 side in the clamp body 12.
- the guide edge 15 has a predetermined slope so that the width of the end of the clamp body 12 on the first operation piece 13 side (width in the front-rear direction) is narrow on the base side and wide on the tip side (first operation piece 13 side). It is formed in an inclined shape.
- an engagement recess 22 is formed on the outer surface of the second operation piece 21 (the surface opposite to the first operation piece 13).
- the engaging recess 22 is formed so as to be able to engage and disengage the locking claw 14 (see FIG. 3).
- the engagement recess 22 corresponds to an “engagement portion” in this specification.
- the engaging recess 22 may have a shape that prevents at least the displacement of the locking claw 14 in the disengagement direction and the displacement of the locking claw 14 inward in the radial direction of the clamp body 12. .
- An expansion restricting piece 24 that protrudes in a direction opposite to the first operation piece 13 on the clamp body 12 side is formed on the front side portion of the second operation piece 21 by L-shaped bending.
- an inverted U-shaped groove 25 is formed between the engagement recess 22 side and the expansion restricting piece 24 side of the second operation piece 21.
- a concave receiving groove 26 (see FIG. 2) is formed on the front side of the end of the clamp body 12 on the second operation piece 21 side.
- a groove wall on the second operation piece 21 side of the receiving groove 26 is a guide edge 27.
- the guide edge 27 has a predetermined width (width in the short direction) on the second operation piece 21 side of the clamp body 12 so that the base side is narrow and the tip side (second operation piece 21 side) is wide. It is formed in an inclined shape with a gradient. Further, the guide edge 27 is formed so as to be able to contact with and slide on the guide edge 15 on the first operation piece 13 side.
- the guide edges 15 and 27 constitute a “guide mechanism” in the present specification.
- a leakage preventing piece located on the base side with respect to the receiving groove 26 is formed on the front side edge of the end of the clamp body 12 on the second operation piece 21 side (opposite side edge with respect to the end on the first operation piece 13 side). 28 protrudes (see FIG. 1).
- the front end edge (front end edge) of the leak preventing piece 28 is formed in a straight line extending in the circumferential direction with a predetermined length Le (see FIG. 2). Further, the guide of the rear side edge (opposite side edge) of the end portion on the first operation piece 13 side of the clamp body 12 in the hose clamped state (described later) of the hose clamp 10 is provided at the leading edge of the leak prevention piece 28.
- a contact portion (reference numeral 16) set between the edge 15 and the base end portion (the bending end portion of the clamp body 12) 13a of the first operation piece 13 can be contacted in a point contact manner. Yes.
- the leak prevention piece 28 and the abutting portion 16 constitute a “leak prevention portion” in this specification.
- the operating pieces 13 and 21 of the hose clamp 10 in the free state are gripped by a tool 30 (see FIG. 5) such as pliers and pliers, and approach each other using the elastic deformation of the clamp body 12.
- a tool 30 see FIG. 5
- the diameter of the clamp body 12 is increased, and the locking claw 14 on the first operation piece 13 side passes through the opening groove 25 of the second operation piece 21.
- the first operation piece 13 is offset with respect to the second operation piece 21 in the axially opposing direction, that is, in the rear direction (the back side of the sheet in FIG. 1) using the elastic deformation of the clamp body 12 (position shift).
- FIG. 5 is a front view showing a temporarily assembled state of the hose clamp
- FIG. 6 is a plan view
- FIG. 7 is a perspective view showing the peripheral portions of both operation pieces.
- the receiving groove 26 on the second operation piece 21 side includes the guide edge 15 at the end of the clamp body 12 on the first operation piece 13 side.
- the side halves are fitted, and the guide edge 27 of the receiving groove 26 and the guide edge 15 on the first operating piece 13 side are brought close to each other.
- the hose clamp 10 is carried into a work site related to a hose tightening operation in a temporarily assembled state, for example. Further, the hose clamp 10 may be carried into the work site in a free state and temporarily assembled at the work site.
- FIG. 8 is a plan view showing a temporary assembly released state.
- the first operation piece 13 is opposed to the second operation piece 21 in the opposite direction in the axial direction of the clamp body 12, that is, forward (downward in FIG. 8).
- the first operation piece 13 opposes the second operation piece 21 in the axial direction of the clamp body 12 by an offset reaction force called an elastic restoring force due to the offset of the first operation piece 13 with respect to the second operation piece 21. It is pushed in the direction, ie forward (downward in FIG. 8).
- the first operation piece 13 faces or substantially faces the second operation piece 21, and the opening groove 25 of the second operation piece 21 and the locking claw 14 on the first operation piece 13 side are connected to the clamp body 12. Align and approximately align in the axial direction.
- FIG. 9 is a front view showing a hose clamped state of the hose clamp
- FIG. 10 is a plan view of the same.
- the second operation piece 21 is caused by the offset reaction force of the clamp body 12.
- the first operation piece 13 side is expanded with respect to the side, that is, the first operation piece 13 side is excessively pushed back in the opposite direction in the axial direction of the clamp body 12, that is, the first operation piece 13 side relative to the guide edge 27 on the second operation piece 21 side Due to the sliding contact of the guide edge 15, the first operating piece 13 side may be moved too much in the same direction.
- FIG. 11 is a top view which shows the effect
- attachment defect of the clamp main body 12 with respect to the hose 32 can be prevented, and the leak of the fluid in the hose 32 resulting from the assembly
- the engaging claw 14 is engaged with the engaging recess 22 in a state in which the first operating piece 13 side is offset from the neutral state where both the operating pieces 13 and 21 face each other to the second operating piece 21 side.
- the first operation piece 13 side is offset from the second operation piece 21 side by the offset reaction force of the clamp body 12. This is effective when expansion is expected.
- the hose 32 when the hose 32 is tightened (see FIGS. 9 and 10), between the both ends of the clamp body 12, that is, the leading edge (front edge) of the leakage preventing piece 28 on the second operating piece 21 side and the first operating piece 13.
- the contact portion 16 on the side substantially contacts the axial direction of the clamp body 12 (see FIG. 10).
- the leak prevention piece 28 presses the hose 32 against the connection pipe 34 together with the clamp body 12 (see FIG. 9). Therefore, the leakage flow path generated in the portion where the surface pressure by the clamp body 12 is low in the gap between both ends of the clamp body 12 in the hose 32 can be blocked by pressing the leakage prevention piece 28.
- the tip edge (front edge) of the leak preventing piece 28 and the contact portion 16 are preferably in contact, but may be close to each other.
- the thickness range of the hose 32 at the time of tightening the hose 32 is T ⁇ t
- the range of the pipe outer diameter of the connection pipe 34 is D ⁇ d
- the clamp body 12 of the hose clamp 10 is used.
- the length Le of the front end edge (front end edge) of the piece 28 is set (see FIG. 2).
- L indicates the length from the center line 11 ⁇ / b> L of the blank 11 (see FIG. 2) to the base end portion 13 a of the first operation piece 13.
- both the operation pieces 13 and 21 are formed in a single leg shape. Therefore, for example, compared with the case where the first operation piece 13 is formed in a single leg shape and the second operation piece 21 is formed in a two leg shape, the hose clamp 10 is arranged in the axial direction (width direction) of the clamp body 12. Can be made compact.
- FIG. 12 and 13 are perspective views showing the locking claws.
- [Modification 1 of the locking claw] As shown in FIG. 12, in the first modification of the locking claw, a U-shaped slit 17 is formed at the end of the clamp body 12 on the first operation piece 13 side, and the claw-shaped portion by the slit 17 is in the radial direction.
- a locking claw 14 (reference numeral A) is formed by being raised outward in an inclined manner.
- FIG. 14 and 15 are perspective views showing the expansion restricting pieces.
- Variation 1 of the expansion restriction piece As shown in FIG. 14, in the first variation example of the expansion restricting piece, the projecting piece protruding from the front side edge portion of the opening groove 25 of the second operation piece 21 in the clamp body 12 is bent upright. An opening restriction piece 24 (reference numeral, A) is formed.
- the second variation example of the expansion restricting piece is obtained by bending the protruding piece protruding from the front side edge of the second operation piece 21 in the clamp body 12 in an upright manner, thereby expanding the expansion restricting piece 24 (reference numeral, B is attached).
- FIG. 19 is a development view of the hose clamp.
- the clamp main body has a clamp body at the center of the rear side edge (inclined side edge) 12 h of the half body portion on the first operation piece 13 side of the clamp main body 12 in the first embodiment.
- the inclination prevention piece 36 which protrudes 12 axial direction outwards (upward in FIG. 19) is formed in the protruding piece shape.
- the inclination prevention piece 36 is disposed, for example, at the distal end side end portion (the end portion on the taper portion 12c side) of the base side taper portion 12b.
- the half body portion on the second operation piece 21 side is different from the half body portion on the first operation piece 13 side of the clamp body 12.
- the blank 11 is formed in a point-symmetrical manner around the center point 11C. Therefore, the clamp body 12 also protrudes outward in the axial direction of the clamp body 12 (downward in FIG. 19) at the center of the front side edge (inclined front edge) 12i of the half body portion on the second operation piece 21 side.
- An anti-tilt piece 36 (denoted with the same reference numeral for convenience) is formed.
- the tilt prevention piece 36 in the half body portion on the first operation piece 13 side of the clamp body 12 and the tilt prevention piece 36 in the half body portion on the second operation piece 21 side of the clamp body 12 have the same configuration, Since the same operation and effect are exhibited, the inclination preventing piece 36 of the half body portion on the second operation piece 21 side will be described below, and the inclination prevention piece 36 of the half body portion on the first operation piece 13 side will be described below. Description is omitted.
- the tilt preventing piece 36 is formed with a protruding amount that does not protrude from the straight line L1 extending along the front edge 12a of the half body portion of the clamp body 12 on the first operation piece 13 side.
- the width dimension of the portion including the inclination prevention piece 36 is the full width in the axial direction of the clamp body 12 (that is, the rear side edge 12d of the half body portion on the second operation piece 21 side of the clamp body 12 and the first operation). It is set to be equal to the dimension (W1) between the front side edge 12a of the half part on the side of the piece 13.
- the tilt preventing piece 36 corresponds to the “tilt preventing portion” in this specification.
- the tilt prevention piece 36 abuts on the hose 32 (specifically, on the outer peripheral surface), whereby the inclined shape of the clamp body 12 is increased. It is possible to prevent the front edge 12i from tilting inward in the radial direction (the back side in FIG. 17). For this reason, the surface pressure distribution of the clamp body 12 with respect to the hose 32 can be equalized.
- the clamp body 12 When the amount increases, the clamp body 12 may not be reduced in diameter to a predetermined diameter, and the clamp body 12 may not be uniformly wound around the hose 32. When it is severe, the surface pressure of the clamp body 12 with respect to the hose 32 may decrease as a gap is formed with respect to the hose 32 at the center in the circumferential direction of the clamp body 12. Therefore, it is expected that the clamping force of the clamp body 12 against the hose 32 is reduced, and the pressure resistance performance is deteriorated.
- the central portion of the inclined front side edge 12i of the half body portion on the second operation piece 21 side of the clamp body 12 is in contact with the hose 32 when the hose 32 is tightened.
- an inclination preventing piece 36 for preventing the inclination of the side edge 12i inward in the radial direction is provided. Therefore, when the hose 32 is tightened, the inclination preventing piece 36 abuts on the hose 32, whereby the inclination of the front side edge 12i of the clamp body 12 inward in the radial direction can be prevented. For this reason, the surface pressure distribution of the clamp body 12 with respect to the hose 32 can be equalized. As a result, the clamping force of the clamp body 12 with respect to the hose 32 can be improved, and the pressure resistance performance can be improved.
- any one of the tilt prevention pieces 36 in the present embodiment may be omitted.
- the arrangement position, shape, number, and the like of the inclination preventing pieces 36 can be selected as appropriate.
- the width dimension of the portion including the inclination preventing piece 36 may be smaller than the total axial width W1 of the clamp body 12.
- FIG. 20 is a side view showing a peripheral portion of the tilt preventing piece.
- the tilt preventing piece (denoted by reference numeral 38) in the present embodiment protrudes from a straight line L ⁇ b> 1 extending along the front side edge 12 a of the half body portion on the first operation piece 13 side of the clamp body 12. It is formed with a protruding amount.
- the tilt prevention piece 38 corresponds to the “tilt prevention unit” in this specification.
- FIG. 21 is a side view showing a peripheral portion of the tilt preventing piece.
- the anti-tilt piece (denoted by reference numeral 40) in the present embodiment has the anti-tilt piece 38 (see FIG. 20) in the third embodiment as a main part, and the tip of the main part 38 has a main part.
- a circumferential protrusion 41 that extends in parallel along the circumferential direction of the clamp body 12 is formed in a T shape.
- the inclination preventing piece 40 since the inclination preventing piece 40 has the circumferential protrusion 41, the inclined front side edge 12i of the clamp body 12 at the time of tightening the hose 32 is radially inward (backward in FIG. 21). The effect of preventing inclination can be improved. In addition, the tilt prevention piece 40 can be prevented from being caught by the hose 32 when the hose 32 is tightened, and the familiarity of the clamp body 12 with respect to the hose 32 can be improved.
- the circumferential protrusion 41 is not limited to the T shape with respect to the main portion 38, and may be formed in an L shape, a Y shape, or the like, and the shape can be changed as appropriate.
- the circumferential direction protrusion part 41 can also form the inclination prevention piece 36 (refer FIG. 17) in the said Embodiment 2 as a main part.
- the tilt prevention piece 40 corresponds to a “tilt prevention unit” in this specification.
- FIG. 22 is a side view showing a peripheral portion of the tilt preventing piece
- FIG. 23 is a cross-sectional view taken along line XXIII-XXIII in FIG.
- the tip end portion 36a of the tilt preventing piece 36 in the second embodiment is bent in an inclined manner outward in the radial direction of the clamp body 12.
- the tip of the tilt preventing piece 36 is bent to the outside in the radial direction of the clamp body 12 to prevent the tilt preventing piece 36 from being caught on the hose 32 when the hose 32 is tightened.
- the familiarity of the clamp body 12 with respect to the hose 32 can be improved.
- FIG. 24 is a side view showing a peripheral portion of the tilt preventing portion
- FIG. 25 is a view taken along the line XXV in FIG.
- the anti-tilt piece (denoted by reference numeral 42) in the present embodiment is the main part of the anti-tilt piece 38 (see FIG. 20) in the third embodiment.
- a circumferential protrusion 43 that extends in parallel with the distal end portion in the circumferential direction of the clamp body 12 is formed in an L shape. Further, the distal end portion 43 a of the circumferential protrusion 43 is bent in an inclined manner outward in the radial direction of the clamp body 12.
- the inclination prevention piece 42 since the inclination prevention piece 42 has the circumferential protrusion 43, the inclination of the inclined front side edge 12i of the clamp main body 12 when the hose 32 is tightened inward in the radial direction (behind the paper surface in FIG. 24). The prevention effect can be improved. Further, by bending the distal end portion 43a of the circumferential protrusion 43 to the outside in the radial direction of the clamp body 12, the circumferential protrusion 43 of the inclination preventing piece 42 with respect to the hose 32 when the hose 32 is tightened is pulled. It is possible to prevent hooking and improve the familiarity of the clamp body 12 with respect to the hose 32.
- the tilt prevention piece 42 corresponds to the “tilt prevention unit” in this specification.
- FIG. 26 is a side view showing a peripheral portion of the tilt preventing portion.
- the tilt prevention portion (indicated by reference numeral 45) in the present embodiment is a base side tapered portion 12e of the half body portion on the second operation piece 21 side of the clamp body 12 (two points in FIG. 26). It is formed in an inverted triangular plate shape that protrudes axially outward (leftward in FIG. 26) from the clamp body 12 from the chain line 12e), and the front side edge of the half body portion of the clamp body 12 on the first operation piece 13 side.
- the front edge 45a is continuous to 12a and the edge 45b is parallel to the axial direction.
- the inclined front side edge 12i of the half body part on the second operation piece 21 side of the clamp body 12 is brought into contact with the hose 32 when the hose 32 is tightened, so that the diameter of the side edge 12i is increased.
- a plate-shaped tilt preventing portion 45 having a front side edge 45a that is long in the circumferential direction for preventing tilting inward in the direction is provided. Therefore, when the hose 32 is tightened, the tilt preventing portion 45 abuts on the hose 32 (specifically, on the outer peripheral surface), thereby preventing the tilt of the front edge 12i of the clamp body 12 inward in the radial direction. . For this reason, the surface pressure distribution of the clamp body 12 with respect to the hose 32 can be equalized. As a result, the clamping force of the clamp body 12 with respect to the hose 32 can be improved, and the pressure resistance performance can be improved.
- FIG. 27 is a side view showing a peripheral portion of the tilt preventing portion
- FIG. 28 is a sectional view taken along line XXVIII-XXVIII in FIG.
- the corner 45c formed by the front edge 45a and the end edge 45b of the tilt preventing portion 45 (see FIG. 26) in the seventh embodiment is formed on the clamp body 12. This is one that is bent in an inclined shape outward in the radial direction (downward in FIG. 28).
- the corner portion 45c of the tilt prevention portion 45 is bent outwardly in the radial direction of the clamp body 12 so that the tilt prevention portion 45 is caught on the hose 32 when the hose 32 is tightened. Therefore, the familiarity of the clamp body 12 with respect to the hose 32 can be improved.
- FIG. 29 is a side view showing a peripheral portion of the tilt preventing portion.
- the front edge 45a of the tilt preventing portion 45 (see FIG. 26) in the seventh embodiment and the tip side tapered portion 12f of the clamp body 12 are gently S-shaped.
- the curved portion 47 is continuous. That is, the curved portion 47 includes a convex R-shaped portion 47a that is continuous with the front edge 45a of the inclination preventing portion 45, and a concave R-shaped portion that is continuous with the R-shaped portion 47a and the tip-side tapered portion 12f of the clamp body 12. 47b.
- the front side edge 45a of the tilt prevention portion 45 and the tip side taper portion 12f of the clamp body 12 are made continuous with the curved portion 47. Therefore, when the hose 32 is tightened, the tilt prevention portion 45 The sensitivity of the hose 32 to the curved portion 47 can be reduced. As a result, the inclination prevention part 45 can be prevented from being caught with respect to the hose 32, and the familiarity of the clamp body 12 with respect to the hose 32 can be further improved.
- FIG. 30 is a side view showing a peripheral portion of the tilt preventing portion
- FIG. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG.
- the corner portion 47c including the convex R-shaped portion 47a of the tilt preventing portion 45 (see FIG. 29) in the ninth embodiment is arranged in the radial direction of the clamp body 12.
- the outer side is bent in an L shape.
- the corner portion 47c of the curved portion 47 of the tilt preventing portion 45 is bent to the outside in the radial direction of the clamp body 12, so that the tilt preventing portion 45 with respect to the hose 32 when the hose 32 is tightened. And the familiarity of the clamp body 12 with respect to the hose 32 can be improved.
- FIG. 32 is a side view showing a peripheral portion of the tilt preventing portion
- FIG. 33 is a view taken along the line XXXIII in FIG.
- the end portion 45 (see reference numeral 48) of the tilt preventing portion 45 (see FIG. 26) in the seventh embodiment is attached to the clamp body 12. It is cut and raised to the outside in the radial direction.
- a slit-shaped cut groove 48 a is formed between the end portion 48 and the clamp body 12.
- the end portion 48 of the tilt prevention portion 45 is bent outwardly in the radial direction of the clamp body 12, thereby preventing the tilt prevention portion 45 from being caught on the hose 32 when the hose 32 is tightened.
- the familiarity of the clamp body 12 with respect to the hose 32 can be improved.
- FIG. 34 is a side view showing a peripheral portion of the tilt preventing portion
- FIG. 35 is a view taken along the line XXXV in FIG.
- the cut groove 48a (see FIGS. 32 and 33) of the inclination preventing portion 45 in the eleventh embodiment is changed to a split groove 49 having a wide groove width. It is.
- the hose clamp according to any one of claims 1 to 4 By engaging the engaging portion on the one operating portion side with the engaging portion on the other operating portion side in a state offset from the neutral state where the pair of operating portions face each other in a direction facing the axial direction of the clamp body A hose clamp that keeps the clamp body in an expanded state.
- the hose clamp according to any one of claims 1 to 4 and (1) Between the both ends of the clamp body, there is provided a guide mechanism for guiding the operation unit outward in the width direction (forward in the embodiment) when one operation unit is brought close to the other operation unit.
- Hose clamp By engaging the engaging portion on the one operating portion side with the engaging portion on the other operating portion side in a state offset from the neutral state where the pair of operating portions face each other in a direction facing the axial direction of the clamp body A hose clamp that keeps the clamp body in an expanded state.
- the said inclination prevention part is a hose clamp which is a protrusion-shaped inclination prevention piece.
- the hose clamp according to (3) A hose clamp in which a tip portion of the tilt preventing piece is bent radially outward of the clamp body.
- the hose clamp according to claim 2 The said inclination prevention part is a hose clamp currently formed in the plate shape which protrudes in the axial direction outward from the side edge which makes the inclination shape of the said clamp main body, and has a long side edge in the circumferential direction.
- the leakage prevention portion may be configured to substantially abut against the axial direction of the clamp body 12 and press the hose 32 between the both ends of the clamp body 12 when the hose 32 is tightened.
- 28 is provided at the end of the clamp body 12 on the side of the first operation piece 13 instead of the end of the clamp body 12 on the side of the second operation piece 21, and the contact part 16 is replaced by the end of the clamp body 12 on the side of the first operation piece 13. May be provided at the end on the second operation piece 21 side.
- the contact portion 16 is brought into point contact with the tip edge (front end edge) of the leak prevention piece 28.
- the contact portion 16 can be brought into line contact with the tip edge (front end edge) of the leak prevention piece 28. You may form in.
- the expansion restricting portion is in a direction opposite to the axial direction of the clamp main body 12 of one operation portion with respect to the other operation portion when the engagement claw 14 is disengaged from the engagement recess 22 between the operation portions.
- an expansion restriction piece corresponding to the end of the first operation piece 13 or the first operation piece 13 is provided on the second operation piece 21 side.
- an expansion restriction piece corresponding to the second operation piece 21 or the end of the second operation piece 21 may be provided for the first operation piece 13.
- either one of the guide edges 15 and 27 constituting the guide mechanism may be formed as a contact portion that can contact the other guide edge in a point contact manner. Further, the guide mechanism can be omitted. Further, both guide edges (guide mechanisms) 15 and 27 can be omitted. Further, the hose clamp 10 may be replaced with resin instead of metal. Further, the engagement recess 22 of the second operation piece 21 may be replaced with a locking hole that penetrates the second operation piece 21 in the thickness direction. Moreover, the engagement recessed part 22 of the 2nd operation piece 21 may be abbreviate
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
図16に示すように、ホースクランプ100は、金属帯板で円環状に曲げて形成されたクランプ本体101と、クランプ本体101の両端部から中央部に向かって幅方向(クランプ本体101の軸方向)に行き違い状態をもって延びるテーパー部106と、テーパー部106の先端から半径方向に起立する一対の操作片102A、102Bとからなる。クランプ本体101が縮径する時にホース(図示省略)の締付けが可能とされる。また、両操作片102A、102Bを互いに接近させた時にクランプ本体101が拡径される。また、一方の操作片102A寄りのクランプ本体101上にロック爪103が立ち上げられている。また、他方の操作片102B側には、ロック爪103を係脱可能に係合する受け部104が形成されていると共に、拡径時に一方の操作片102Aに対するクランプ本体101の軸方向の重なり合いを回避する切欠部105が形成されている。
本発明が解決しようとする課題は、ホースに対するクランプ本体の組付不良を防止することのできるホースクランプを提供することにある。
すなわち、第1の発明に係るホースクランプによると、帯状の板ばね材を円環状に曲げて形成されたクランプ本体と、前記クランプ本体の両端部から半径方向に起立する一対の操作部とを備え、前記クランプ本体の弾性復元力による縮径によりホースの締付けを可能とし、前記一対の操作部を互いに接近させることにより前記クランプ本体が弾性変形を利用して拡径されるホースクランプにおいて、前記クランプ本体の一方の操作部側に係止部が形成され、前記クランプ本体の他方の操作部側に前記係止部を係脱可能に係合する係合部が形成され、前記係合部に対する前記係止部の係合により前記クランプ本体が拡径状態に保持され、前記クランプ本体を拡径状態から縮径させるときは、前記他方の操作部に対して前記一方の操作部を接近させるとともにクランプ本体の軸方向で相反する方向へ移動させることにより、前記係合部に対する前記係止部の係合が解除され、前記一対の操作部がいずれも1本足状に形成されているホースクランプであって、前記クランプ本体の一方の操作部側と他方の操作部側との間に、前記係合部に対する前記係止部の係合の解除時において前記他方の操作部側に対する前記一方の操作部側のクランプ本体の軸方向で相反する方向への拡開を規制する拡開規制部が設けられ、前記拡開規制部は、前記一対の操作部のいずれかの操作部に形成された拡開規制片と、残りの操作部側で前記拡開規制片に当接可能な部位とによって構成されている。このように構成すると、他方の操作部側の係合部に一方の操作部側の係止部を係合することにより、クランプ本体が拡径状態いわゆる仮組み状態に保持される。また、仮組み状態のクランプ本体内にホースを挿入した状態で、他方の操作部に一方の操作部を接近させ、係合部に対する係止部の係合を解除すると、クランプ本体が弾性復元力により縮径する。これにより、クランプ本体の弾性復元力によりホースが締付けられる。そして、係合部に対する係止部の係合の解除時において、クランプ本体の一方の操作部側と他方の操作部側との間に設けられた拡開規制部の拡開規制片とその拡開規制片に当接可能な部位との当接により、他方の操作部側に対する一方の操作部側のクランプ本体の軸方向で相反する方向への拡開が規制される。このため、ホースに対してクランプ本体が斜めに組付けられたり、クランプ本体の両端部の間の隙間が拡大したりすることによるクランプ本体の組付不良を防止することができる。 ひいては、クランプ本体の組付不良に起因するホース内の流体の漏れを防止することができる。
実施形態1を説明する。図1はホースクランプの自由状態を示す正面図、図2はホースクランプの展開図である。
図2に示すように、ホースクランプの展開形状に基づいて、金属製の帯状の板ばね材からなるブランク11がプレス成形により形成されており、そのブランク11を曲げ成形することによってホースクランプ10(図1参照)が形成されている。なお、図2にはホースクランプ10の各部に相当する符号が付されている。
また、クランプ本体12における第1操作片13側の端部の後側部には、係止爪14に対して第1操作片13側に位置する案内縁15が形成されている。案内縁15は、クランプ本体12の第1操作片13側の端部の幅(前後方向の幅)を基部側が狭く、先端側(第1操作片13側)が広くなるように、所定の勾配をもって傾斜状に形成されている。
まず、自由状態におけるホースクランプ10(図1参照)の両操作片13、21を、プライヤー、ペンチ等の工具30(図5参照)により把持しかつクランプ本体12の弾性変形を利用して互いに接近させる。これにより、クランプ本体12が拡径されていくとともに、第2操作片21の開口溝25内を第1操作片13側の係止爪14が通過する。そして、第2操作片21に対して第1操作片13を、クランプ本体12の弾性変形を利用して軸方向で対向する方向すなわち後方(図1において紙面裏方)へオフセットさせた状態(位置ずれさせた状態)で、前記工具30による両操作片13、21に対する把持を解放する。すると、クランプ本体12の弾性復元力をもって、第2操作片21の係合凹部22に第1操作片13側の係止爪14が係合する(図7参照)。これにより、クランプ本体12が拡径状態に保持される(図5及び図6参照)。この状態をホースクランプ10の仮組み状態という。なお、図5はホースクランプの仮組み状態を示す正面図、図6は同じく平面図、図7は同じく両操作片の周辺部を示す斜視図である。
図11に示すように、第2操作片21の拡開規制片24に対して第1操作片13側の係止爪14が当接することによって、その拡開が規制されることになる。このため、ホース32に対するクランプ本体12の組付不良を防止し、その組付不良に起因するホース32内の流体の漏れを防止することができる。このことは、両操作片13、21が正対する中立状態から第2操作片21側に第1操作片13側がオフセットされた状態で係合凹部22に係止爪14が係合されることにより仮組み状態とされるホースクランプ10において、係合凹部22に対する係止爪14の係合の解除時に、クランプ本体12のオフセット反力により第2操作片21側に対して第1操作片13側が拡開することが予想される場合に有効といえる。
Amax=(D+d)+(T+t)×2
で表される。また、クランプ本体12の内径Aの最小値Aminは、
Amin=(D-d)+(T-t)×2
で表される。したがって、クランプ本体12の内径の範囲Amin~Amax内において、漏れ防止片28の先端縁(前端縁)と第1操作片13側の当接部16とが点接触可能となるように、漏れ防止片28の先端縁(前端縁)の長さLeが設定されている(図2参照)。なお、図2において、Lはブランク11(図2参照)の中心線11Lから第1操作片13の基端部13aまでの長さを示す。
[係止爪の変形例1]
係止爪の変形例1は、図12に示すように、クランプ本体12における第1操作片13側の端部にU字状のスリット17が形成され、そのスリット17による爪状部が半径方向外方に傾斜状に起こされることにより係止爪14(符号、Aを付す)が形成されている。
係止爪の変形例2は、図13に示すように、クランプ本体12における第1操作片13側の端部の後側縁に突出する突出片を半径方向外方へ起立状に折り曲げることにより、係止爪14(符号、Bを付す)が形成されている。係止爪14Bの先端部には、第2操作片21の係合凹部22(図4参照)に係合する突起18が形成されている。
[拡開規制片の変形例1]
拡開規制片の変形例1は、図14に示すように、クランプ本体12における第2操作片21の開口溝25の前側の側縁部に突出する突出片を起立状に折り曲げることにより、拡開規制片24(符号、Aを付す)が形成されている。
拡開規制片の変形例2は、図15に示すように、クランプ本体12における第2操作片21の前側縁に突出する突出片を起立状に折り曲げることにより、拡開規制片24(符号、Bを付す)が形成されている。
実施形態2を説明する。本実施形態は、前記実施形態1に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図17は傾き防止片の周辺部を示す側面図、図18は同じく正面図、図19はホースクランプの展開図である。
本実施形態では、図19に示すように、前記実施形態1におけるクランプ本体12の第1操作片13側の半体部の後側縁(傾斜状の側縁)12hの中央部に、クランプ本体12の軸方向外方(図19において上方)へ突出する傾き防止片36が突片状に形成されている。傾き防止片36は、例えば、基部側テーパー部12bにおける先端側端部(テーパー部12c側の端部)に配置されている。また、本実施形態においても、前記実施形態1(図2参照)と同様、クランプ本体12の第1操作片13側の半体部に対して、その第2操作片21側の半体部が、ブランク11の中心点11Cを中心として点対称状に形成されている。このため、クランプ本体12の第2操作片21側の半体部の前側縁(傾斜状の前縁)12iの中央部にも、クランプ本体12の軸方向外方(図19において下方)へ突出する傾き防止片36(便宜上、同一符号を付す)が形成されている。なお、クランプ本体12の第1操作片13側の半体部における傾き防止片36と、クランプ本体12の第2操作片21側の半体部における傾き防止片36とは同一の構成であり、同一の作用・効果を奏するものであるから、以下、第2操作片21側の半体部の傾き防止片36について説明し、第1操作片13側の半体部の傾き防止片36についての説明は省略する。
実施形態3を説明する。本実施形態以降の実施形態は、前記実施形態2の傾き防止片36の変更例であるから、その変更部分について説明し、重複する説明は省略する。図20は傾き防止片の周辺部を示す側面図である。
図20に示すように、本実施形態における傾き防止片(符号、38を付す)は、前記クランプ本体12の第1操作片13側の半体部の前側縁12aに沿って延びる直線L1をはみ出す突出量で形成されている。本実施形態によると、傾き防止片38の突出量が増大されているため、ホース32の締付け時におけるクランプ本体12の傾斜状の前側縁12iの径方向内方(図20において紙面裏方)への傾きの防止効果を向上することができる。なお、傾き防止片38は本明細書でいう「傾き防止部」に相当する。
実施形態4を説明する。図21は傾き防止片の周辺部を示す側面図である。
図21に示すように、本実施形態における傾き防止片(符号、40を付す)は、前記実施形態3における傾き防止片38(図20参照)を主部として、その主部38の先端部に対して、クランプ本体12の周方向に沿って平行状に延びる周方向突出部41がT字状に形成されている。本実施形態によると、傾き防止片40が周方向突出部41を有するため、ホース32の締付け時におけるクランプ本体12の傾斜状の前側縁12iの径方向内方(図21において紙面裏方)への傾きの防止効果を向上することができる。また、ホース32の締付け時における該ホース32に対する傾き防止片40の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。なお、周方向突出部41は、主部38に対してT字状に限らず、L字状、Y字状等に形成してもよく、その形状は適宜変更することができる。また、周方向突出部41は、前記実施形態2における傾き防止片36(図17参照)を主部として形成することもできる。なお、傾き防止片40は本明細書でいう「傾き防止部」に相当する。
実施形態5を説明する。図22は傾き防止片の周辺部を示す側面図、図23は図22のXXIII-XXIII線矢視断面図である。
図22及び図23に示すように、本実施形態は、前記実施形態2における傾き防止片36(図17参照)の先端部36aをクランプ本体12の径方向外側へ傾斜状に折り曲げたものである。本実施形態によると、傾き防止片36の先端部をクランプ本体12の径方向外側へ傾斜状に折り曲げたことにより、ホース32の締付け時における該ホース32に対する傾き防止片36の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。
実施形態6を説明する。図24は傾き防止部の周辺部を示す側面図、図25は図24のXXV線矢視図である。
図24及び図25に示すように、本実施形態における傾き防止片(符号、42を付す)は、前記実施形態3における傾き防止片38(図20参照)を主部として、その主部38の先端部に対して、クランプ本体12の周方向に沿って平行状に延びる周方向突出部43がL字状に形成されている。さらに、周方向突出部43の先端部43aがクランプ本体12の径方向外側へ傾斜状に折り曲げられている。本実施形態によると、傾き防止片42が周方向突出43を有するため、ホース32の締付け時におけるクランプ本体12の傾斜状の前側縁12iの径方向内方(図24において紙面裏方)への傾きの防止効果を向上することができる。また、周方向突出部43の先端部43aをクランプ本体12の径方向外側へ傾斜状に折り曲げたことにより、ホース32の締付け時における該ホース32に対する傾き防止片42の周方向突出部43の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。なお、傾き防止片42は本明細書でいう「傾き防止部」に相当する。
実施形態7を説明する。図26は傾き防止部の周辺部を示す側面図である。
図26に示すように、本実施形態における傾き防止部(符号、45を付す)は、クランプ本体12の第2操作片21側の半体部の基部側テーパー部12e(図26中、二点鎖線12e参照)からクランプ本体12の軸方向外方(図26において左方)へ突出する逆三角形板状に形成されており、クランプ本体12の第1操作片13側の半体部の前側縁12aに連続する前側縁45aと、軸方向に平行をなす端縁45bとを有する。本実施形態によると、クランプ本体12の第2操作片21側の半体部の傾斜状の前側縁12iには、ホース32の締付け時において該ホース32に当接することにより該側縁12iの径方向内方への傾きを防止する周方向に長い前側縁45aを有する板状の傾き防止部45が設けられている。したがって、ホース32の締付け時において、傾き防止部45がホース32(詳しくは外周面上)に当接することにより、クランプ本体12の前側縁12iの径方向内方への傾きを防止することができる。このため、ホース32に対するクランプ本体12の面圧分布を均等化することができる。ひいては、ホース32に対するクランプ本体12の締付け力を向上し、耐圧性能を向上することができる。
実施形態8を説明する。図27は傾き防止部の周辺部を示す側面図、図28は図27のXXVIII-XXVIII線矢視断面図である。
図27及び図28に示すように、本実施形態は、前記実施形態7における傾き防止部45(図26参照)の前側縁45aと端縁45bとのなす隅角部45cを、クランプ本体12の径方向外側(図28において下方)へ傾斜状に折り曲げたものである。本実施形態によると、傾き防止部45の隅角部45cをクランプ本体12の径方向外側へ傾斜状に折り曲げたことにより、ホース32の締付け時における該ホース32に対する傾き防止部45の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。
実施形態9を説明する。図29は傾き防止部の周辺部を示す側面図である。
図29に示すように、本実施形態は、前記実施形態7における傾き防止部45(図26参照)の前側縁45aと、クランプ本体12の先端側テーパー部12fとを、なだらかなS字状の曲線部47をもって連続させたものである。すなわち、曲線部47は、傾き防止部45の前側縁45aに連続する凸型のR形状部47aと、そのR形状部47a及びクランプ本体12の先端側テーパー部12fに連続する凹型のR形状部47bとを有する。本実施形態によると、傾き防止部45の前側縁45aとクランプ本体12の先端側テーパー部12fとを曲線部47をもって連続させたものであるから、ホース32の締付け時において、傾き防止部45の曲線部47に対するホース32の感受性を低下することができる。ひいては、ホース32に対する傾き防止部45の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を一層向上することができる。
実施形態10を説明する。図30は傾き防止部の周辺部を示す側面図、図31は図30のXXXI-XXXI線矢視断面図である。
図30及び図31に示すように、本実施形態は、前記実施形態9における傾き防止部45(図29参照)の凸型のR形状部47aを含む隅角部47cをクランプ本体12の径方向外側へL字状に折り曲げたものである。本実施形態によると、傾き防止部45の曲線部47の隅角部47cをクランプ本体12の径方向外側へ傾斜状に折り曲げたことにより、ホース32の締付け時における該ホース32に対する傾き防止部45の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。
実施形態11を説明する。図32は傾き防止部の周辺部を示す側面図、図33は図32のXXXIII線矢視図である。
図32及び図33に示すように、本実施形態は、前記実施形態7における傾き防止部45(図26参照)の端縁45b側の端部(符号、48を付す)を、クランプ本体12の径方向外側へ傾斜状に切り起こしたものである。なお、端部48と、クランプ本体12との間にはスリット状の切込溝48aが形成されている。本実施形態によると、傾き防止部45の端部48をクランプ本体12の径方向外側へ傾斜状に折り曲げたことにより、ホース32の締付け時における該ホース32に対する傾き防止部45の引っ掛りを防ぎ、該ホース32に対するクランプ本体12の馴染み性を向上することができる。
実施形態12を説明する。図34は傾き防止部の周辺部を示す側面図、図35は図34のXXXV線矢視図である。
図34及び図35に示すように、本実施形態は、前記実施形態11における傾き防止部45の切込溝48a(図32及び図33参照)を、溝幅の広い割溝49に変更したものである。
(1)請求項1~4のいずれか1つに記載のホースクランプであって、
一対の操作部が正対する中立状態からクランプ本体の軸方向で対向する方向へオフセットされた状態で他方の操作部側の係合部に一方の操作部側の係止部を係合することにより、クランプ本体が拡径状態に保持されるホースクランプ。
(2)請求項1~4、前記(1)項のいずれか1つに記載のホースクランプであって、
前記クランプ本体の両端部間には、他方の操作部に対して一方の操作部を接近させたときに操作部を幅方向外方(実施形態において前方)へ案内する案内機構が設けられているホースクランプ。
(3)請求項2に記載のホースクランプであって、
前記傾き防止部は、突片状の傾き防止片であるホースクランプ。
(4)前記(3)項に記載のホースクランプであって、
前記傾き防止片の先端部がクランプ本体の径方向外側に折り曲げられているホースクランプ。
(5)請求項2に記載のホースクランプであって、
前記傾き防止部は、前記クランプ本体の傾斜状をなす側縁から軸方向外方へ突出されかつ周方向に長い側縁を有する板状に形成されているホースクランプ。
(6)前記(5)項に記載のホースクランプであって、
前記傾き防止部の隅角部がクランプ本体の径方向外側に折り曲げられているホースクランプ。
12…クランプ本体
13…第1操作片(操作部)
14…係止爪(係止部)
16…当接部
21…第2操作片(操作部)
22…係合凹部(係合部)
24…拡開規制片
28…漏れ防止片
32…ホース
34…接続パイプ
36…傾き防止片(傾き防止部)
38…傾き防止片(傾き防止部)
40…傾き防止片(傾き防止部)
42…傾き防止片(傾き防止部)
45…傾き防止部
Claims (4)
- 帯状の板ばね材を円環状に曲げて形成されたクランプ本体(12)と、前記クランプ本体(12)の両端部から半径方向に起立する一対の操作部(13、21)とを備え、前記クランプ本体(12)の弾性復元力による縮径によりホース(32)の締付けを可能とし、前記一対の操作部(13、21)を互いに接近させることにより前記クランプ本体(12)が弾性変形を利用して拡径されるホースクランプ(10)において、
前記クランプ本体(12)の一方の操作部(13)側に係止部(14)が形成され、
前記クランプ本体(12)の他方の操作部(21)側に前記係止部(14)を係脱可能に係合する係合部(22)が形成され、
前記係合部(22)に対する前記係止部(14)の係合により前記クランプ本体(12)が拡径状態に保持され、
前記クランプ本体(12)を拡径状態から縮径させるときは、前記他方の操作部(21)に対して前記一方の操作部(13)を接近させるとともにクランプ本体(12)の軸方向で相反する方向へ移動させることにより、前記係合部(22)に対する前記係止部(14)の係合が解除され、
前記一対の操作部(13、21)がいずれも1本足状に形成されている
ホースクランプ(10)であって、
前記クランプ本体(12)の一方の操作部(13)側と他方の操作部(21)側との間に、前記係合部(22)に対する前記係止部(14)の係合の解除時において前記他方の操作部(21)側に対する前記一方の操作部(13)側のクランプ本体(12)の軸方向で相反する方向への拡開を規制する拡開規制部が設けられ、
前記拡開規制部は、前記一対の操作部(13、21)のいずれかの操作部に形成された拡開規制片と、残りの操作部側で前記拡開規制片に当接可能な部位とにより構成されている
ホースクランプ(10)。 - 請求項1に記載のホースクランプ(10)であって、
前記クランプ本体(12)は、円周方向に延びる直線に対して傾斜状をなす側縁(12h,12i)を有し、
前記傾斜状をなす側縁(12h,12i)には、前記ホース(32)の締付け時において該ホース(32)に当接することにより該側縁(12h,12i)の径方向内方への傾きを防止する傾き防止部が設けられている
ホースクランプ(10)。 - 請求項1又は2に記載のホースクランプ(10)であって、
前記拡開規制片(24)が前記他方の操作部(21)に形成され、
前記拡開規制片(24)に当接可能な部位が前記係止部(14)であるホースクランプ(10)。 - 請求項1~3のいずれか1つに記載のホースクランプ(10)であって、
前記クランプ本体(12)の両端部の間に、前記ホース(32)の締付け時においてクランプ本体(12)の軸方向に略当接しかつホース(32)を押圧する漏れ防止部が設けられているホースクランプ(10)。
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DE112012000479.5T DE112012000479B4 (de) | 2011-01-14 | 2012-01-13 | Schlauchschelle |
US13/979,366 US9239124B2 (en) | 2011-01-14 | 2012-01-31 | Hose clamp |
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PCT/JP2011/050540 WO2012095989A1 (ja) | 2011-01-14 | 2011-01-14 | ホースクランプ |
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JP2001090886A (ja) * | 1999-09-24 | 2001-04-03 | Piolax Inc | ホースクランプ |
JP2001159491A (ja) * | 1999-12-03 | 2001-06-12 | Piolax Inc | ホースクランプ |
JP2001280566A (ja) * | 2000-03-30 | 2001-10-10 | Piolax Inc | ホースクランプ |
JP2003090474A (ja) * | 2001-07-11 | 2003-03-28 | Togo Seisakusho Corp | ホースクランプ |
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US5819376A (en) * | 1997-12-24 | 1998-10-13 | Barnes Group Inc. | Hose clamp |
DE50008765D1 (de) * | 2000-09-26 | 2004-12-30 | Oetiker Hans Maschinen | Schlauchklemme |
KR20080098663A (ko) * | 2006-03-17 | 2008-11-11 | 가부시키가이샤 파이오락꾸스 | 호스 클램프 |
US8695172B2 (en) * | 2009-09-18 | 2014-04-15 | Piolax, Inc. | Hose clamp |
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JP2001090886A (ja) * | 1999-09-24 | 2001-04-03 | Piolax Inc | ホースクランプ |
JP2001159491A (ja) * | 1999-12-03 | 2001-06-12 | Piolax Inc | ホースクランプ |
JP2001280566A (ja) * | 2000-03-30 | 2001-10-10 | Piolax Inc | ホースクランプ |
JP2003090474A (ja) * | 2001-07-11 | 2003-03-28 | Togo Seisakusho Corp | ホースクランプ |
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