CN107660845B - Belt buckle - Google Patents

Abstract

The invention provides a buckle capable of preventing a locking pin from protruding. The buckle (1) is provided with a buckle body (10) through which a belt (2) passes, and a locking pin (20) which is rotatably attached to the buckle body (10), and the buckle (1) is further provided with a cover (30), wherein the cover (30) is movably attached to the buckle body (10), and is selectively positionable at a pin restriction position (P1) at which the cover (30) covers the distal end portion (21) of the locking pin (20) which is in contact with the buckle body (10) to restrict the distal end portion (21) from separating from the buckle body (10), and a pin release position (P2) at which the cover (30) releases the distal end portion (21) of the locking pin (20) to allow the distal end portion (21) to separate from the buckle body (10).

Description

Belt buckle

Technical Field

The present invention relates to a buckle (buckle), and more particularly, to a buckle for adjusting the length of a strap attached to a bag or the like.

Background

As a conventional buckle, there is known a buckle including: a buckle body having a belt passing portion through which a belt passes; and a locking pin which is attached to the buckle body so as to be rotatable, and which restricts rotation by a tip end portion coming into contact with the buckle body, and which is configured to allow the tip end side of the belt to pass through the buckle body, and to prevent the belt from coming off the buckle body by inserting the locking pin into a locking hole of the belt and bringing the tip end of the locking pin into contact with the buckle body (see, for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-124701

Disclosure of Invention

However, in the buckle described in patent document 1, when the belt moves in a tightening direction with respect to the buckle, the locking pin stands up and protrudes from the belt, and another object may get caught on the tip of the pin.

The present invention has been made in view of the above problems, and an object thereof is to provide a buckle capable of preventing a locking pin from protruding.

The above object of the present invention is achieved by the following structure.

(1) A buckle, comprising: a buckle body having a belt insertion portion through which a belt provided with a locking hole is inserted; and a locking pin which is attached to the buckle body so as to be rotatable with respect to the buckle body, wherein the front end side of the belt is inserted through the buckle body, the locking pin is inserted into the locking hole of the belt, and the front end portion of the locking pin is brought into contact with the buckle body, thereby preventing the belt from coming off the buckle body, the buckle being characterized by comprising: and a cover that is attached to be movable relative to the buckle body and that is selectively positionable in a pin restricting position where the cover covers the distal end portion of the locking pin abutting the buckle body to restrict the distal end portion from being separated from the buckle body and a pin releasing position where the cover is released to allow the distal end portion to be separated from the buckle body.

(2) The buckle according to (1), wherein the cover is provided so as to be movable in a longitudinal direction of the belt with respect to the buckle main body.

(3) The buckle according to (1) or (2), wherein an urging mechanism is provided which always applies a force from the pin releasing position toward the pin restricting position to the cover.

(4) The buckle according to (3), wherein the cover is provided so as to be slidable in the longitudinal direction of the band with respect to the buckle body, and a cam surface is provided at a distal end portion of the locking pin, the cam surface moving the cover against the biasing force of the biasing mechanism when the locking pin located at a position where the distal end portion is separated from the buckle body is rotated toward the cover located at the pin regulation position.

(5) The buckle according to (3) or (4), wherein the urging mechanism includes: a pair of elastically deformable pinching arms formed integrally with the cover; and a pressed portion which is pressed by the pair of pressing arms and is formed integrally with the buckle body.

(6) The buckle according to (1), wherein the distal end portion of the locking pin is disposed between the buckle main body and the cover at the pin regulation position.

(7) The buckle according to (1), wherein the buckle body includes a frame portion formed in a ring shape, an inner space of the frame portion forms a belt passing portion, the engagement pin is rotatably supported on one end side of the frame portion in a longitudinal direction of the belt, and a cover attachment portion is provided to extend from the other end side of the frame portion.

(8) The buckle according to (7), wherein a pin seat portion recessed so as to be opened at an upper surface is formed on an upper surface of the cover attaching portion and a frame portion of the buckle main body, the pin seat portion extends in a longitudinal direction of the belt, one end of the pin seat portion is disposed so as to communicate with the belt passing portion, and the other end of the pin seat portion is disposed inside the cover attaching portion.

(9) The buckle according to (7), wherein the buckle body has an engaged portion extending in a longitudinal direction of the belt, the cover has an engaging portion engaged with the engaged portion, and the engaging portion is formed so as to be movable along the engaged portion in the engaged portion.

(10) The buckle according to (9), wherein the engaged portion is an engaging hole that penetrates a cover attachment portion of the buckle body in the up-down direction, and the engaging portion is an engaging claw that extends from a lower surface of the cover.

Effects of the invention

According to the present invention, since the cover is provided so as to be movable with respect to the buckle body, and the cover is selectively positionable at the pin restricting position where the cover covers the distal end portion of the locking pin abutting on the buckle body to restrict the distal end portion from being separated from the buckle body, and at the pin releasing position where the cover is released to allow the distal end portion to be separated from the buckle body, the cover can be moved to the pin restricting position to prevent the locking pin from protruding.

Drawings

Fig. 1A is a perspective view illustrating a buckle according to a first embodiment of the present invention.

Fig. 1B is a perspective view illustrating a state in which the cover is moved to the pin release position.

Fig. 1C is a perspective view illustrating a state in which the cam surface of the distal end portion of the locking pin is in contact with the inclined surface of the cover.

Fig. 2A is a perspective view of the buckle of the first embodiment.

Fig. 2B is an exploded perspective view of the buckle of the first embodiment.

Fig. 3A is a plan view of the buckle body shown in fig. 2B.

Fig. 3B is a bottom view of the cover shown in fig. 2B.

Fig. 3C is a cross-sectional view taken along line C-C of fig. 3B.

Fig. 3D is a cross-sectional view taken along line D-D of fig. 3A in a state where the buckle main body is attached with the cover.

Fig. 4A is a partially broken plan view showing a state in which the cover is moved to the pin restricting position in the first embodiment.

Fig. 4B is a partially broken plan view showing a state where the cover is moved to the pin release position in the first embodiment.

Fig. 5 is a longitudinal sectional view of a widthwise central portion of the buckle of the first embodiment with the locking pin omitted.

Fig. 6A is a plan view illustrating a first modification of the buckle according to the first embodiment.

Fig. 6B is a plan view illustrating a second modification of the buckle according to the first embodiment.

Fig. 7A is a perspective view of a buckle of the second embodiment.

Fig. 7B is an exploded perspective view of the buckle of the second embodiment.

Fig. 8A is a top view of the buckle body shown in fig. 7B.

Fig. 8B is a bottom view of the cover shown in fig. 7B.

Fig. 9A is a partially broken plan view showing a state where the cover is moved to the pin restricting position in the second embodiment.

Fig. 9B is a partially broken plan view showing a state where the cover is moved to the pin release position in the second embodiment.

Fig. 10A is an exploded perspective view of the buckle of the third embodiment.

Fig. 10B is a bottom view of the buckle of the third embodiment.

Fig. 11A is a plan view of the buckle body of the fourth embodiment.

Fig. 11B is a bottom view of the cover of the fourth embodiment.

Fig. 12A is a partially broken plan view showing a state in which the cover is moved to the pin restricting position in the fourth embodiment.

Fig. 12B is a partially broken plan view showing a state in which the cover is moved to the pin release position in the fourth embodiment.

Fig. 13 is a side view illustrating a first modification of the buckle according to the fourth embodiment.

Fig. 14 is a side view illustrating a second modification of the buckle according to the fourth embodiment.

Description of the reference numerals

1 Belt buckle

2 band

2h stop hole

2c front end side

10 Belt buckle body

10a frame part

11 band passing part

13 pin seat part

14 cover mounting part

14h engaging hole (engaged part)

15 is pressed by the clamp

20 locking pin

21 front end part

21c cam surface

30 cover

34 clamping claw (clamping part)

37 clamping and pressing arm

40 force applying mechanism

41 force application part

42 helical spring

51 urged part

52 spring seat

P1 pin limit position

P2 Pin Release position

Detailed Description

Hereinafter, each embodiment of the buckle according to the present invention will be described in detail with reference to the drawings. In the following description, the front side refers to the direction of arrow X1 in fig. 1, the rear side refers to the direction of arrow X2 in fig. 1, the left side refers to the direction of arrow Y1 in fig. 1, the right side refers to the direction of arrow Y2 in fig. 1, the upper side refers to the direction of arrow Z1 in fig. 1, and the lower side refers to the direction of arrow Z2 in fig. 1. The left-right direction also refers to the belt width direction. The front-back direction also refers to the belt longitudinal direction.

(first embodiment)

First, a first embodiment of a buckle according to the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1A and 2, the buckle 1 of the present embodiment includes: a buckle body 10 having a belt insertion portion 11 through which a belt 2 provided with a plurality of locking holes 2h in the front-rear direction (belt longitudinal direction) is inserted; a locking pin 20 which is attached to the buckle body 10 so as to be rotatable and which is restricted from rotating by the tip end portion 21 abutting against the buckle body 10; and a cover 30 attached to be movable with respect to the buckle body 10.

The buckle body 10 is composed of a frame portion 10a formed in a substantially annular shape (a noncircular shape such as a perfect circle, an ellipse, or a rectangle) and a cover attachment portion 14 described later. The inner space of the frame portion 10a forms the belt passing portion 11. The frame portion 10a of the buckle body 10 has a shaft 12 at one end (rear end) thereof, and the shaft 12 rotatably supports a base portion 22 formed in an annular shape, which engages with the locking pin 20. Further, the shaft 12 is provided with a pair of flange portions 12f for restricting the position of the base portion 22 of the locking pin 20 in the axial direction thereof. In other words, the flange portion 12f is formed to protrude along the outer periphery of the shaft 12. Instead of the pair of flange portions 12f, groove portions may be formed along the outer periphery of the shaft 12. In this case, the base portion 22 of the locking pin 20 is rotatably supported in the groove portion of the shaft 12. This can restrict the position of the base 22 of the locking pin 20.

As shown in fig. 1A, in the buckle 1, the front end side 2c of the belt 2 is inserted through the belt insertion portion 11 of the buckle body 10, the locking pin 20 is inserted into the locking hole 2h of the belt 2, and the front end 21 of the locking pin 20 is brought into contact with the buckle body 10, thereby preventing the belt 2 from coming off the buckle body 10. The buckle 1 can be applied to various belts, and can also be applied to belts of bags, backpack bags, and the like.

As shown in fig. 2A and 2B, the latch body 10 has a pin seat portion 13 on the upper surfaces of the frame portion 10a and the cover attachment portion 14, and the pin seat portion 13 constitutes an abutment portion which abuts against the distal end portion 21 of the locking pin 20. The pin boss portion 13 extends in the longitudinal direction of the belt 2 and is formed in a recessed groove shape so as to be open on the upper surface. One end (rear end) of the pin boss portion 13 is disposed so as to communicate with the belt insertion portion 11, and the other end (front end) thereof is disposed in the cover mounting portion 14. Tapered guide surfaces 13g that guide the distal end portions 21 of the locking pins 20, which are closer to the direction of abutment with the buckle body 10, toward the pin boss portions 13 are provided on both sides of the pin boss portions 13 in the left-right direction (both sides in the belt width direction).

As shown in fig. 5, the buckle body 10 is formed in a curved shape as viewed from the rotation axis direction of the locking pin 20. Therefore, the parallelism between the tape 2 and the top 31 of the cover 30 can be realized by the thickness T2 of the tape 2, and the appearance of the entire tape can be improved.

The cover 30 is attached to be movable relative to the buckle body 10, and is selectively positionable at a pin restricting position P1 shown in fig. 1A and a pin releasing position P2 shown in fig. 1B, the pin restricting position P1 being a position at which the cover 30 covers the distal end portion 21 of the locking pin 20 abutting the buckle body 10 from the side (upper side) opposite to the abutting side of the distal end portion 21 with the buckle body 10 to restrict the distal end portion 21 from being separated from the buckle body 10, and the pin releasing position P2 being a position at which the cover of the distal end portion 21 of the locking pin 20 is released to allow the distal end portion 21 to be separated from the buckle body 10.

The cover 30 is provided so as to be movable (slidable) in the longitudinal direction of the belt 2 (the direction of arrows X1 and X2) with respect to the buckle body 10, reaches the pin restricting position P1 in a state of sliding in a direction (the direction of arrow X2) toward the distal end 21 of the locking pin 20, and reaches the pin releasing position P2 in a state of sliding in a direction (the direction of arrow X1) away from the distal end 21 of the locking pin 20.

As shown in fig. 2 to 4, the other end (front end) of the frame portion 10a of the buckle main body 10 has a cover attachment portion 14 to which the cover 30 is attached. The cover mounting portion 14 is provided: a step 14d corresponding to the thickness of the cover 30 is formed at a portion thereof connected to the buckle body 10.

The cover mounting portion 14 includes: a base portion 14b extending in the belt longitudinal direction on both sides of the pin boss portion 13; a pair of wall portions 14e formed at both end portions in the belt width direction of the base portion 14 b; a pair of slit-shaped engagement holes 14h respectively disposed on the outer sides of the pair of wall portions 14e in the belt width direction and extending in the belt longitudinal direction; a guide frame 14g forming an engaging hole 14h together with the outer surface of the wall portion 14 e; and a guide groove 14c provided in the widthwise center portion of the base portion 14b and extending in the belt longitudinal direction.

The engagement hole 14h is formed to penetrate the cover attachment portion 14 in the vertical direction. An inclined surface 14f is formed on the outer surface of the wall portion 14e to guide engagement of a pair of engagement claws 34 of the cover 30, which will be described later, with the engagement hole 14 h. The inclined surface 14f is an inclined surface whose vertical dimension gradually decreases from the inner side toward the outer side in the width direction.

As shown in fig. 3 and 4, the cover 30 is a thin plate-like member attached so as to cover the upper surface of the cover attachment portion 14 of the buckle body 10, and includes: a top portion 31; a pair of side plates 32 extending downward from both widthwise side edges of the top portion 31; a front plate 33 extending downward from the front edge of the top portion 31; a pair of engagement claws 34 extending downward from the lower surface of the top portion 31, engaging with the engagement hole 14h of the cover mounting portion 14, and movable (slidable) along the engagement hole 14h in the engagement hole 14 h; a projection 35 fitted in the guide groove 14c of the cover mounting portion 14 and slidable along the guide groove 14 c; and a pair of projecting pieces 36 extending downward from the lower surface of the top portion 31 and disposed between the front plate 33 and the engaging claws 34 in the front-rear direction.

The cover 30 is attached to the buckle body 10 by engaging the engagement claws 34 with the engagement holes 14h of the cover attachment portion 14. In the mounted state, the cover 30 can move (slide) in the longitudinal direction of the belt 2 with respect to the buckle body 10. When the cover 30 slides, the lower surface of the top 31 of the cover 30 is guided by the upper surface of the base portion 14b of the cover mounting portion 14, the inner side surfaces of the engaging claws 34 and the protruding pieces 36 of the cover 30 in the left-right direction are guided by the outer side surfaces of the base portion 14b of the cover mounting portion 14, the inner side surfaces of the side plates 32 of the cover 30 are guided by the outer side surfaces of the guide frames 14g of the cover mounting portion 14, and the outer side surfaces of the protrusions 35 of the cover 30 in the left-right direction are guided by the inner side surfaces of the guide grooves 14c of. This allows the cover 30 to slide smoothly with respect to the buckle body 10.

In the buckle 1 of the present embodiment, when the cover 30 is located at the pin regulation position P1 (see fig. 4A), the lower surfaces of the pair of projecting pieces 36 of the cover 30 can be brought into contact with the upper surface of the guide frame 14g of the cover attachment portion 14, and the inner side surfaces of the pair of projecting pieces 36 in the left-right direction can be brought into contact with the outer side surface of the base portion 14b of the cover attachment portion 14. Thereby, the mounting posture of the cover 30 at the pin regulation position P1 is stabilized.

As shown in fig. 3B to 3D, the pair of engagement claws 34 of the cover 30 are arranged on the inner side in the left-right direction than the side plates 32 of the cover 30. Therefore, since the engagement claws 34 are less likely to receive an external force, the engagement claws 34 can be prevented from being broken, and the engagement claws 34 do not affect the appearance of the buckle 1.

Further, inclined surfaces 34a guided by the inclined surfaces 14f of the pair of wall portions 14e of the cover mounting portion 14 are formed on the lower end surfaces of the pair of engagement claws 34 of the cover 30, respectively. The inclined surface 34a is an inclined surface whose vertical dimension gradually decreases from the outer side toward the inner side in the width direction. Therefore, since the inclined surfaces 34a of the pair of engagement claws 34 are guided by the inclined surfaces 14f of the pair of wall portions 14e, the cover 30 can be easily attached to the cover attachment portion 14.

As shown in fig. 4, the buckle 1 includes the biasing mechanism 40 that constantly biases the cover 30 from the pin release position P2 toward the pin regulation position P1.

More specifically, the biasing mechanism 40 of the present embodiment includes: a pair of pinching arms 37 formed integrally with the cover 30 (see fig. 3B and 3C); and a pressed portion 15 (see fig. 3A) formed integrally with the cover attachment portion 14 and pressed by the pair of pressing arms 37 to generate a moving force of the cover 30.

The pair of pressing arms 37 are elastically deformable, and the base portions 37a thereof are integrally connected to the front plate 33 of the cover 30, and are single-arm members that are free from the base portions 37a to the tip end portions 37 b. Further, the pair of pressing arms 37 are formed obliquely so that the intervals therebetween in the left-right direction gradually decrease from the base portion 37a toward the front end portion 37 b.

The pressure receiving portion 15 has a pair of guide surfaces 15g formed integrally with the base portion 14b of the cover mounting portion 14, and is pressed by the distal end portions 37b of the pair of pressing arms 37 to guide the distal end portions 37b of the pair of pressing arms 37. The pair of guide surfaces 15g are formed obliquely so that the distance between the guide surfaces 15g gradually decreases toward the pin boss portion 13.

Therefore, as shown in fig. 4B, the cover 30 located at the pin release position P2 is urged toward the pin regulation position P1 shown in fig. 4A by the pushing force Fs (force generated by the urging force of the nip arm 37 and moving the cover 30 in the longitudinal direction of the belt 2) generated by the pair of guide surfaces 15g of the nip portion 15 being nipped by the distal end portions 37B of the pair of nip arms 37.

The cover 30 biased toward the pin regulation position P1 regulates the stop position by abutting the end surface 30c thereof against the step 14d of the cover attachment portion 14. As shown in fig. 4A, a stepped portion 30d is formed on an end surface 30c of the cover 30, and a gap 10c is formed by the stepped portion 30d at a contact portion between the cover 30 and the buckle body 10 located at the pin regulation position P1. Further, since the gap 10c allows fingers to be easily inserted between the cover 30 and the buckle body 10, the cover 30 can be easily slid. The step portion forming the gap 10c may be formed on the buckle body 10 side (see fig. 9A). The stepped portion may be a tapered surface.

As shown in fig. 3 and 4, the distal end portions 37b of the pair of pressing arms 37 are formed so as to be bent in directions facing each other. Further, a recess 15b for receiving the tip portion 37b of the nip arm 37 is formed at one end of the pair of guide surfaces 15g of the nip target portion 15. Therefore, when the tip end portion 37b of the clamp arm 37 enters the recess portion 15b, the click feeling is felt to position the cover 30 at the pin regulation position P1. This can prevent the cover 30 from being inadvertently moved from the pin restricting position P1 to the pin releasing position P2.

In the present embodiment, the cover 30 is provided with the pair of pressing arms 37 and the buckle main body 10 is provided with the pressed portion 15, but the present invention is not limited to this, and the cover 30 may be provided with the pressed portion and the buckle main body 10 may be provided with the pair of pressing arms.

As shown in fig. 1C and 2B, a cam (cam) surface 21C is provided on the lower surface side of the distal end portion 21 of the locking pin 20, the dimension of which in the vertical direction gradually decreases from the base portion 22 toward the distal end portion 21. When the locking pin 20 located at the position where the distal end portion 21 is separated from the buckle body 10 is rotated toward the cover 30 located at the pin regulation position P1, the cam surface 21c abuts against the cover 30, and the cover 30 is moved (slid) against the biasing force of the biasing mechanism 40. Further, since the inclined surface 38 that abuts against the cam surface 21c of the locking pin 20 is formed in the cover 30, the cover 30 can be easily moved from the pin restricting position P1 to the pin releasing position P2 by the rotation of the locking pin 20.

Next, the operation of the cover 30 by the cam surface 21c of the locking pin 20 will be described.

First, when the locking pin 20 located at the position where the distal end portion 21 is separated from the buckle body 10 is rotated toward the cover 30 located at the pin regulation position P1 (for example, when the belt 2 is pulled toward the front side (arrow X1 direction) as the withdrawal direction), the cam surface 21C of the distal end portion 21 of the locking pin 20 abuts against the inclined surface 38 of the cover 30 as shown in fig. 1C.

Next, when the locking pin 20 is further rotated toward the cover 30, the cam surface 21c presses the inclined surface 38, and the cover 30 slides in the direction of arrow X1 against the biasing force of the biasing mechanism 40.

Then, when the cover 30 is slid to a position where the distal end portion 21 of the locking pin 20 can enter the pin boss portion 13 of the buckle body 10, the distal end portion 21 of the locking pin 20 enters the pin boss portion 13 of the buckle body 10 as shown in fig. 1B.

Thus, since the pressing of the cover 30 by the locking pin 20 in the direction of the arrow X1 is released, the cover 30 automatically slides to the pin restricting position P1 shown in fig. 1A by the biasing force of the biasing mechanism 40. Therefore, the distal end portion 21 of the locking pin 20 is covered by the cover 30, and the distal end portion 21 of the locking pin 20 is restricted from being separated from the buckle body 10. Further, at the pin regulation position P1, the distal end portion 21 of the locking pin 20 is disposed between the buckle body 10 and the cover 30.

To briefly explain the operation of the buckle 1 according to the present embodiment, as shown in fig. 1C, the distal end side 2C of the belt 2 is inserted through the buckle body 10, the locking pin 20 is inserted into the locking hole 2h of the belt 2, and then the belt 2 is pulled only in the withdrawal direction (the direction of the arrow X1), so that the distal end portion 21 of the locking pin 20 enters the pin seat portion 13 of the buckle body 10 after the cover 30 is moved (slid), and the cover 30 is moved to the pin regulation position P1 by the biasing force of the biasing mechanism 40.

As described above, according to the buckle 1 of the present embodiment, since the cover 30 is provided so as to be selectively positionable at the pin restricting position P1 where the cover 30 covers the distal end portion 21 of the locking pin 20 and restricts the separation of the distal end portion 21 from the buckle body 10 and the pin releasing position P2 where the cover 30 releases the cover of the distal end portion 21 of the locking pin 20 and allows the separation of the distal end portion 21 from the buckle body 10, the projection of the locking pin 20 can be prevented by moving the cover 30 to the pin restricting position P1. When the belt 2 is pulled out from the locking pin 20, the cover 30 is moved to the pin release position P2 to allow the locking pin 20 to rotate, whereby the belt 2 can be pulled out.

Further, according to the buckle 1 of the present embodiment, since the cover 30 is provided so as to be movable (slidable) in the longitudinal direction of the belt 2 with respect to the buckle body 10, the pin restricting position P1 and the pin releasing position P2 of the cover 30 can be switched with a small amount of movement.

Further, according to the buckle 1 of the present embodiment, since the biasing mechanism 40 that constantly applies the force to the cover 30 to move the cover from the pin release position P2 to the pin regulation position P1 is provided, the movement of the cover 30 from the pin release position P2 to the pin regulation position P1 can be automated. Therefore, it is not necessary to perform an operation of moving the cover 30 to the pin restricting position P1, and therefore, the operability of the cover 30 can be improved.

Further, according to the buckle 1 of the present embodiment, since the cam surface 21c that moves (slides) the cover 30 against the biasing force of the biasing mechanism 40 is provided at the distal end portion 21 of the locking pin 20, the movement of the cover 30 from the pin regulation position P1 to the pin release position P2 and the movement from the pin release position P2 to the pin regulation position P1 can be automated by the rotational operation of the locking pin 20.

Further, according to the buckle 1 of the present embodiment, since the pair of pressure arms 37 of the urging mechanism 40 is provided integrally with the cover 30, the number of components of the buckle 1 can be reduced, and the manufacturing cost of the buckle 1 can be reduced.

In the buckle 1 according to the present embodiment, the buckle body 10 is formed in a curved shape as viewed from the direction of the rotation axis of the locking pin 20. In other words, a gap corresponding to the thickness T2 of the belt 2 is formed in the vertical direction (the direction of arrows Z1 and Z2) between a horizontal axis a horizontally extending in the front-rear direction (the direction of arrow X1) from the lower surface of the cover attachment portion 14 of the buckle body 10 and a horizontal axis B horizontally extending in the front-rear direction from the upper surface of the shaft 12. Accordingly, the vertical dimension of the tape passing portion 11 can be secured, and thus the parallelism between the tape 2 and the top portion 31 of the cover 30 can be realized by the thickness T2 of the tape 2, and the appearance of the entire tape can be improved.

As first and second modifications of the present embodiment, as shown in fig. 6A and 6B, the hook portions 10B may be provided on both sides in the width direction of the buckle body 10, and the hook portions 30B may be provided on both sides in the width direction of the cover 30. According to this modification, the manual movement operation of the cover 30 to the pin release position P2 can be easily performed.

(second embodiment)

Next, a second embodiment of the buckle according to the present invention will be described with reference to fig. 7 to 9. Note that, with respect to the same or equivalent portions as those of the first embodiment, the same or equivalent reference numerals are given to the drawings, and the description thereof will be omitted or simplified. The present embodiment is different from the first embodiment mainly in that the member of the biasing mechanism 40 corresponding to the nip arm 37 and the cover 30 are configured by separate members and disposed on the buckle main body 10 side, and the member of the biasing mechanism 40 corresponding to the pressed portion 15 is disposed on the cover 30 side.

As shown in fig. 7 to 9, the biasing mechanism 40 of the present embodiment includes: a pair of bias members 41 made of synthetic resin and disposed on the cover attaching portion 14 of the buckle body 10; and a pair of biased portions 51 formed integrally with the cover 30 and generating a moving force of the cover 30 by being biased by the pair of biasing members 41.

As shown in fig. 7B and 9, the pair of biasing members 41 are respectively housed in a pair of housing portions 14j provided in the cover mounting portion 14 of the buckle body 10, and include a support portion 41B supported by a wall portion of the housing portion 14j, and a flexible arm 41a extending from the support portion 41B. The flexible arms 41a are formed to be inclined such that the distance between them gradually increases from the base end connected to the support portion 41b toward the distal end in a state where the biasing member 41 is housed in the housing portion 14 j. In other words, the flexible arm 41a extends outward in the lateral direction of the cover attachment portion 14 from the base end toward the tip end.

As shown in fig. 7B and 9, support portion 41B is substantially L-shaped and can be formed in contact with the inner surface on the front side (arrow X1 direction) and the inner surface on the left side (arrow Y1 direction) or the right side (arrow Y2 direction) of housing portion 14 j. This restricts the movement of the biasing member 41 housed in the housing portion 14j in the front-rear direction and the left-right direction, and therefore, the biasing force of the flexible arm 41a to the cover 30 can be stabilized.

In addition, a convex portion 41c is formed on the support portion 41b of the biasing member 41, and is fitted into a notch 14s formed in the wall portion of the housing portion 14 j. This restricts the movement of the biasing member 41 housed in the housing portion 14 in the width direction, and therefore the biasing force of the flexible arm 41a to the cover 30 can be stabilized.

As shown in fig. 8B and 9, the pair of biased portions 51 are substantially L-shaped projections, and are formed integrally with the lower surface of the top portion 31 of the cover 30. The pair of biased portions 51 are disposed so as to enter the housing portion 14j of the cover attachment portion 14, and are guided to move by the side surface of the housing portion 14j on the pin boss portion 13 side.

Therefore, as shown in fig. 9B, the cover 30 located at the pin release position P2 is urged toward the pin regulation position P1 shown in fig. 9A by the thrust force Fs generated by the pair of flexible arms 41a urging the pair of urged portions 51 (the force generated by the urging of the flexible arms 41a to move the cover 30 in the longitudinal direction of the tape 2). When the cover 30 is slid in the direction of the arrow X1, one end of the biased portion 51 abuts against the support portion 41b of the biasing member 41, thereby regulating the position of the cover 30.

In the present embodiment, an engagement claw 32f that engages with an engagement groove 14k formed in the base portion 14b of the cover attachment portion 14 is formed at a lower end portion of the side plate 32 of the cover 30. The inner side surface of the side plate 32 of the cover 30 and the engagement claw 32f are guided by the outer side surface of the base portion 14b of the cover mounting portion 14 and the engagement groove 14k, respectively.

Other structures and operational effects are the same as those of the first embodiment.

In the buckle 1 of the present embodiment, the biasing member 41 is another member, and therefore, it is particularly effective when the buckle main body 10 is made of metal. When the buckle body 10 is made of a synthetic resin, it may be formed integrally with the buckle body 10.

(third embodiment)

Next, a third embodiment of the buckle according to the present invention will be described with reference to fig. 10. Note that, the same or equivalent portions as those of the first and second embodiments are denoted by the same or equivalent reference numerals, and the description thereof is omitted or simplified. The present embodiment is different from the second embodiment mainly in that the pair of biasing members 41 are replaced with a pair of coil springs 42 made of metal.

As shown in fig. 10, the biasing mechanism 40 of the present embodiment includes: a pair of metal coil springs 42 disposed on the cover attaching portion 14 of the buckle main body 10; and a pair of spring receiving portions 52 formed integrally with the cover 30 and generating a moving force of the cover 30 by being biased by the pair of coil springs 42. As shown in fig. 10A, marks, characters, figures, patterns, and the like can be added to the upper surface of the cover 30 of each embodiment. This improves the appearance of the buckle 1. Further, by forming marks, letters, figures, patterns, and the like in the concave-convex shape, not only the appearance can be improved, but also the cover 30 can be easily hooked by fingers, and the movement operation of the cover 30 can be easily performed manually.

The pair of coil springs 42 are respectively housed in housing portions 14m provided in the cover mounting portion 14 of the buckle body 10. One end of the coil spring 42 is supported by a rod-shaped spring support portion 14n formed in the housing portion 14m, and the other end is supported by a spring seat portion 52 formed in the cover 30.

As shown in fig. 10B, the pair of spring receiving portions 52 are substantially U-shaped projections, and are formed integrally with the lower surface of the top portion 31 of the cover 30. The pair of spring receiving portions 52 are disposed so as to enter the housing portion 14m of the cover attachment portion 14, and are guided to move by both the left and right side surfaces of the housing portion 14 m.

Therefore, as shown in fig. 10B, the cover 30 is urged toward the pin restricting position P1 by the urging force Fs generated by the pair of coil springs 42 urging the pair of spring seat portions 52 (the force generated by the urging force of the coil springs 42 to move the cover 30 in the longitudinal direction of the belt 2).

Other structures and operation effects are the same as those of the first and second embodiments.

(fourth embodiment)

Next, a fourth embodiment of the buckle according to the present invention will be described with reference to fig. 11 to 14. Note that, with respect to the same or equivalent portions as those of the first embodiment, the same or equivalent reference numerals are given to the drawings, and the description thereof will be omitted or simplified. The present embodiment is different from the first embodiment mainly in that the urging mechanism 40 is not provided.

The cover 30 of the present embodiment is provided slidably in the longitudinal direction of the belt 2 with respect to the buckle body 10, and is selectively movable to a pin regulation position P1 shown in fig. 12A and a pin release position P2 shown in fig. 12B, as in the first to third embodiments.

In the present embodiment, as shown in fig. 11 and 12, an engagement claw 32g that engages with an engagement groove 14p formed in the base portion 14b of the cover attachment portion 14 is formed at the lower end portion of the side plate 32 of the cover 30. The left-right inner surfaces of the side plates 32 of the cover 30 and the engagement claws 32g are guided by the left-right outer surfaces of the base portion 14b of the cover mounting portion 14 and the engagement grooves 14p, respectively.

In the present embodiment, an engaging recess 32h is formed in the engaging claw 32g of the cover 30, an engaging projection 14r that can be engaged with and disengaged from the engaging recess 32h is formed in the engaging groove 14P of the cover mounting portion 14, and the engaging recess 32h and the engaging projection 14r are engaged when the cover 30 is located at the pin limit position P1 (see fig. 12A). Therefore, when the cover 30 is slid to the pin restricting position P1, the engagement concave portion 32h engages with the engagement convex portion 14r, and the cover 30 is locked at the pin restricting position P1.

In the present embodiment, a portion farther from the side of the shaft 12 (the front side (the direction of the arrow X1)) than the engagement projection 14r of the engagement groove 14P constitutes an engagement recess 14t (see fig. 12B) for engaging the engagement claw 32g of the cover 30 when the cover 30 is located at the pin release position P2. Therefore, by sliding the cover 30 to the pin release position P2, the engagement claw 32g engages with the engagement recess 14t, and the cover 30 is locked at the pin release position P2. Further, a stopper 14u that stops the movement (sliding) of the cover 30 by coming into contact with the engagement claw 32g is formed on a side (front side (arrow X1 direction)) farther from the shaft 12 than the engagement recess 14t of the base portion 14 b.

As shown in fig. 11, a pair of projections 31a extending in the belt longitudinal direction are formed on the lower surface of the top portion 31 of the hood 30, and a pair of guide grooves 14w for guiding the pair of projections 31a are formed on the upper surface of the base portion 14b of the hood attachment portion 14.

Other structures and operational effects are the same as those of the first embodiment.

As first and second modifications of the present embodiment, as shown in fig. 13 and 14, the cover 30 may be attached to the buckle body 10 so as to be openable and closable via the shaft 16. In this case, the cover 30 is at the pin restricting position P1 when the cover 30 is closed, and the cover 30 is at the pin releasing position P2 when the cover 30 is opened.

The present invention is not limited to the configurations exemplified in the above embodiments, and can be modified as appropriate within a range not departing from the gist of the present invention.

Claims (9)

1. A buckle (1) is provided with:

a buckle body (10) having a band insertion section (11) through which a band (2) provided with a locking hole (2h) is inserted; and

a locking pin (20) rotatably attached to the buckle body (10),

the buckle (1) is characterized in that the front end side (2c) of the belt (2) is inserted through the buckle body (10), the locking pin (20) is inserted into the locking hole (2h) of the belt (2), and the front end part (21) of the locking pin (20) is abutted against the buckle body (10), thereby preventing the belt (2) from being separated from the buckle body (10), and the buckle (1) is provided with:

a cover (30) that is attached so as to be movable relative to the buckle body (10) and that is selectively positionable in a pin restricting position (P1) where the cover (30) covers the distal end portion (21) of the locking pin (20) that is in contact with the buckle body (10) to restrict the distal end portion (21) from separating from the buckle body (10), and a pin releasing position (P2) where the cover of the distal end portion (21) of the locking pin (20) is released to allow the distal end portion (21) to separate from the buckle body (10),

the cover (30) is provided so as to be movable in the longitudinal direction of the belt (2) relative to the buckle body (10).

2. The buckle (1) according to claim 1, characterized by comprising:

an urging mechanism (40) that always applies a force to the cover (30) that urges the cover (30) from the pin release position (P2) toward the pin restricting position (P1).

3. The buckle (1) according to claim 2, characterized by comprising:

the cover (30) is provided so as to be slidable in the longitudinal direction of the belt (2) relative to the buckle body (10),

a cam surface (21c) is provided at the tip end (21) of the locking pin (20), and when the locking pin (20) located at a position where the tip end (21) is separated from the buckle body (10) is rotated toward the cover (30) located at the pin restricting position (P1), the cam surface (21c) moves the cover (30) against the biasing force of the biasing mechanism (40).

4. The buckle (1) according to claim 2, characterized in that:

the force application mechanism (40) includes: a pair of elastically deformable pinching arms (37) formed integrally with the cover (30); and a pressed portion (15) which is pressed by the pair of pressing arms (37) and is formed integrally with the buckle body (10).

5. The buckle (1) according to claim 1, characterized in that:

in the pin restricting position (P1), the distal end portion (21) of the locking pin (20) is disposed between the buckle body (10) and the cover (30).

6. The buckle (1) according to claim 1, characterized in that:

the buckle body (10) includes a frame portion (10a) formed in a ring shape and a cover attachment portion (14),

an inner space of the frame portion (10a) forms the belt passing portion (11),

the locking pin (20) is rotatably supported on one end side of the frame part (10a) in the longitudinal direction of the belt (2),

the cover attachment portion (14) extends from the other end side of the frame portion (10 a).

7. The buckle (1) according to claim 6, characterized in that:

a pin seat part (13) which is recessed in a manner that the upper surface is opened is formed on the upper surfaces of the frame part (10a) of the buckle main body (10) and the cover mounting part (14),

the pin boss portion (13) extends along the length direction of the belt (2),

one end of the pin boss portion (13) is disposed so as to communicate with the belt passing portion (11),

the other end of the pin base part (13) is disposed in the cover mounting part (14).

8. The buckle (1) according to claim 6, characterized in that:

the buckle body (10) has an engaged portion (14h) extending in the longitudinal direction of the belt (2),

the cover (30) has an engaging portion (34) that engages with the engaged portion (14h),

the engaging portion (34) is formed so as to be movable along the engaged portion (14h) in the engaged portion (14 h).

9. The buckle (1) according to claim 8, characterized in that:

the engaged part (14h) is an engaging hole (14h) that penetrates the cover mounting part (14) of the buckle body (10) in the vertical direction,

the engaging portion (34) is an engaging claw (34) extending from the lower surface of the cover (30).

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