JP5931040B2 - buckle - Google Patents

Description

  The present invention relates to a buckle.

  For example, Japanese Patent Application Laid-Open No. 2000-166616 (Patent Document 1) discloses a conventional buckle that provides a buckle in which each engagement portion of a male member is easy to be pressed (operated) and the elastic piece is not damaged. The purpose is to insert the hollow cylindrical female member provided with the insertion hole and the locking part, and the engaging part that engages with the locking part at both ends of the front surface of the flange part into the insertion hole provided at the tip. In the buckle composed of a male member provided so that the elastic pieces are opposed to each other, one end side of each engaging portion is connected to the front surface of the flange portion with the first elastic piece, and the other end sides of the engaging portions are connected to each other. A “buckle” has been proposed in which a second elastic piece is connected to make the first elastic piece thinner than the second elastic piece.

  Japanese Patent Laid-Open No. 2004-313268 (Patent Document 2) discloses that in a side release type or side push type buckle, it is possible to avoid the spread damage of the lock arm and to sufficiently reduce the manual operation for disconnecting. A base for the purpose of providing a buckle, comprising a socket and a plug that can be inserted into the socket at its distal end and releasable by manually pressing both sides of the socket. A pair of lock arms extending from the base to the distal end side, an engaging portion formed at an intermediate portion of the lock arm and engageable with the inside of the socket, and disposed at an intermediate portion of the lock arm for manual operation. A “buckle” has been proposed that includes a pressing portion that is pressed and includes a bridge that connects intermediate portions of the lock arms.

  Japanese Patent Application Laid-Open No. 7-100005 (Patent Document 3) discloses that a buckle is composed of a male member and a female member for the purpose of being small and having good operability and having a large coupling force. The first engaging portion of the housing of the female member is the first engaging portion of the first elastic protrusion and the second engaging portion of the second elastic protrusion of the male member simply by being inserted into the female member. And coupled to the second engaging portion. Further, the second elastic protrusion is cooperated in the direction substantially perpendicular to the pressing direction only by pressing the outside of the first elastic protrusion of the male member, and the respective coupling is released and separated. Thus, a “buckle” has been proposed that can increase the coupling force without requiring a complicated operation while maintaining a small size without complicating the structure.

  Japanese Patent Application Laid-Open No. 7-155207 (Patent Document 4) discloses that the buckle is composed of a male member and a female member for the purpose of obtaining a small size, good operability, stable coupling and smooth coupling release. Then, simply by inserting the male member into the female member, the engaging portion and the auxiliary engaging portion of the elastic protrusion of the male member are coupled to the engaging portion and the auxiliary engaging portion of the housing of the female member. When the outer side of the elastic protrusion of the male member is pressed until the ends of the elastic protrusions cooperate, the elastic deformation is performed in directions opposite to the pressing direction in directions opposite to each other, and the respective bonds are released and separated. As a result, a “buckle” has been proposed in which the structure remains compact without complicating the structure, a stable coupled state can be obtained without requiring a complicated operation, and smooth coupling can be released.

JP 2000-166616 A JP 2004-313268 A JP 7-100005 A JP-A-7-155207

However, in the conventional buckle described above, the pair of engaging portions provided on the male member are inserted into and engaged with the insertion portion and the pair of locking portions provided on the female member, and the engagement state is released. In this case, the structure is adopted in which each engagement portion of the male member exposed to the outside from the operation opening of the female member is pressed and released by the fingertip. It has the problem that it will be. In addition, when the pair of engaging portions provided on the male member are independent from each other, the engaging portion is in an open state, and thus has a problem of trapping or pinching foreign matter. In addition, in order to eliminate the rattling and stabilize the male member, it is necessary to push the male member strongly in the release operation, so that the operability is not good. ing.
Accordingly, an object of the present invention is to provide a buckle that improves the operability of engagement and disengagement compared to a conventional buckle and is excellent in the stability of engagement and the prevention of rattling.

In order to solve the above-mentioned problems, the invention described in claim 1 includes a hollow cylindrical female member provided with an insertion end portion and a pair of locking portions, and an elastic leg portion protruding from one end of the base portion. The elastic leg portion of the male member has a hole through which the base portion penetrates in the thickness direction of the flat plate. And is formed in a thin plate shape in a direction perpendicular to two parallel planar side faces facing the hole of the frame-like body, the first inclined portion and the press in order from one end side of the base portion A closed frame body in which a pair of the engaging groove portion, the engaging portion, and the second inclined portion are arranged in a pair, and the distal end side of the elastic leg portion is connected by a linear distal end portion. A pair of pressing portions that release the engaged state on the base side in the vicinity of the locking groove portion. The hollow tube of the female member is formed with a pair of insertion parts and a locking part in order from the insertion end part side, and the insertion end part is provided with a pair on both sides of the insertion end part. A pair of guide grooves into which the protruding arms of the pair of pressing portions of the male member are inserted are provided, and a pair of notches are formed at the distal end portion of the elastic leg portion of the male member. The inner wall surface of the hollow cylinder is provided with a pair of guide portions through which the pair of notches are inserted when the male member is inserted, and the insertion of the male member is completed on the inner wall surface of the hollow cylinder of the female member. An abutting portion that abuts on the distal end portion of the elastic leg portion and biases in a separating direction is provided, and the engaging groove portion of the male member is engaged with the engaging portion of the female member, and the male The outer wall surface of the tip of the member is the contact of the female member. Characterized in that the engaged state by inserting the contact is complete part.

  As described above, according to the buckle according to the present invention, the elastic leg portion of the male member is formed in the closed frame body by connecting the distal end portion of the engaging portion. A pair of locking grooves are provided in the engaging part of the male member, and a pair of pressing parts for releasing the engaging state are formed projecting outward in the vicinity of the locking groove. Therefore, the problem that the fingertip is pinched in the engaging and releasing operations can be solved. Moreover, since the engaging part of a male member can be made thin, it is not necessary to push in strongly in cancellation | release operation, Therefore Operability improves.

  In addition, the inner wall surface of the hollow cylinder of the female member is provided with an abutting portion that abuts on the distal end portion of the elastic leg portion and biases it in a separating direction when the male member is completely inserted. At the same time that the pressing portion is pushed by the fingertip, the tip end portion of the elastic leg portion is pushed out in the extraction direction by the urging force of the contact portion and the elastic deformation force of the elastic leg portion, so that the releasing operation is facilitated.

  In addition, a notch is formed at the distal end of the elastic leg, and a guide portion through which the notch is inserted when the male member is inserted is provided on the inner wall surface of the hollow cylinder of the female member. It suppresses vertical twist and exhibits an excellent effect on the stability of engagement.

It is a front view which shows an example of the male member of the buckle concerning this invention. It is a side view of the male member shown in FIG. It is a bottom view of the male member shown in FIG. It is a front view which shows an example of the female member of the buckle concerning this invention. It is a side view of the female member shown in FIG. It is a top view of the female member shown in FIG. It is a longitudinal cross-sectional view which shows the engagement state of the buckle concerning this invention. It is a cross-sectional view which shows the engagement state of the buckle concerning this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, about each structure of the buckle of this invention, it is not limited to a following example, It can change suitably with a use condition. In addition, since the buckle of the present invention has a simple configuration using an elastic member, it can be integrally formed with a synthetic resin material such as polypropylene, polyamide, or polyacetal having sufficient strength.

1 is a front view showing an example of a male member of a buckle according to the present invention, FIG. 2 is a side view, and FIG. 3 is a bottom view.
The male member 10 of the buckle is formed in a closed frame body by connecting elastic legs projecting from one end of the base 11. As shown in FIG. 1, the elastic leg portion includes a first inclined portion 13 (thickness: about 1 mm to 2 mm, an inclination angle with respect to the insertion direction: about 15 ° to 20 °) in order from one end side of the base portion 11, and a pressing portion 14. , Locking groove 15 (thickness: about 1 mm to 2 mm, depth of groove: about 0.7 mm to 1.2 mm), engaging part 16 (thickness: about 1.7 mm to 3.2 mm), second inclination The parts 17 (thickness: about 1 mm to 2 mm, inclination angle with respect to the insertion direction: about 25 degrees to 35 degrees) are arranged in pairs, respectively, and the tip 18 (thickness: about 0.7 mm to 1.2 mm) The distal ends of the elastic legs are connected to form a closed frame. Thereby, unlike the conventional buckle in which the engaging part is in an open state, there is no possibility of foreign matter being caught or caught.

  The pair of locking groove portions 15 are formed of thin grooves formed so as to engage with a pair of locking portions 25 of the female member 20 described later. On the base 11 side in the vicinity of the locking groove 15, a pair of pressing portions 14 that are pushed in with a fingertip when releasing the engaged state are formed to protrude outward as shown in FIG. 1. Thereby, the problem that a fingertip will be pinched like the conventional buckle in operation of engagement and cancellation | release can be solved.

4 is a front view showing an example of the female member of the buckle according to the present invention, FIG. 5 is a side view, and FIG. 6 is a plan view.
The female member 20 of the buckle is formed in a hollow cylindrical shape. As shown in FIG. 4, the hollow tube 21 is provided with a pair of an insertion portion 23 and a locking portion 25 in this order from the insertion end side. As shown in FIGS. 5 and 6, a pair of guide grooves 24 through which the protruding arms of the pair of pressing portions 14 of the male member 10 are inserted are provided on both sides of the insertion end of the female member 20.

  As shown in FIGS. 4 to 6, the male member 10 is brought into contact with the distal end portion 18 of the elastic leg at the predetermined position facing the inner wall surface of the hollow cylinder 21 of the female member 20 and separated from the distal end portion 18 of the male member 10. An abutting portion 26 is provided for urging in the direction of movement. As a result, the pressing portion is pushed with the fingertip during the release operation, and at the same time, the distal end portion 18 of the elastic leg portion is pushed out in the extraction direction by the urging force of the contact portion 26, so that the release operation is facilitated. The abutting portion 26 is not limited to the content shown in the figure, and may be any as long as it has an effect of abutting the tip portion 18 and urging it in the separating direction. Further, in order to increase the force for urging in the separating direction, the distal end portion 18 of the elastic leg portion is set so as to come into contact with the contact portion 26 while being elastically deformed.

  Further, as shown in FIGS. 1 to 3, a pair of notches 19 are formed at the distal end portion 18 of the elastic leg portion of the male member 10, and as shown in FIGS. A pair of guide portions 27 through which the pair of notches 19 are inserted when the male member 10 is inserted is provided on the inner wall surface of the hollow cylinder 21. Thereby, the twist of a vertical direction is suppressed in the case of insertion operation, and the effect excellent in the stability of engagement is exhibited. Note that the notch portion 19 and the guide portion 27 are not limited to those shown in the drawings, and may be any as long as they have an effect of stably guiding the distal end portion 18 when the male member 10 is inserted.

  Next, the operation of this embodiment will be described. First, both ends of the belt are attached to the hole 12 of the male member 10 of the buckle and the hole 22 of the female member 20 of the buckle. When the elastic leg portion of the male member 10 of the buckle is inserted from the insertion end portion side of the female member 20 of the buckle, the second inclined portion 17 of the male member 10 passes between the insertion portions 23 of the female member 20, and the male member 10. The engaging portion 16 enters while contacting the inner wall surface of the insertion portion 23 of the female member 20, and further advances while the notch portion 19 of the male member 10 is inserted through the guide portion 27 of the female member 20. The locking groove 15 is locked to the locking portion 25 of the female member 20, and the outer wall surface of the tip 18 of the male member 10 is in contact with the contact portion 26 (the contact surface 26a in FIG. 6) of the female member 20. Then, insertion is completed and it will be in an engagement state (refer FIG.7 and FIG.8).

  When releasing the engagement state, when the pressing portion 14 of the male member 10 is pushed in with a fingertip, the urging force that urges the distal end portion 18 of the male member 10 in the separating direction by the contact portion 26 of the female member 20. And the elastic deformation force of the elastic legs themselves, the male member 10 is pushed out in the extraction direction, and the engaged state is easily released.

  As mentioned above, according to the buckle concerning this invention, while improving the operativity of engagement and cancellation | release compared with the conventional buckle, there exists an effect excellent in prevention of rattling with the stability of engagement. At the same time, it has a simple structure that can be integrally molded, has a high degree of freedom in design and can be made compact, and contributes to a reduction in manufacturing costs.

DESCRIPTION OF SYMBOLS 10 Male member 11 Base part 12 Hole 13 1st inclination part 14 Press part 15 Locking groove part 16 Engagement part 17 2nd inclination part 18 Tip part 19 Notch part 20 Female member 21 Hollow cylinder 22 Hole 23 Insertion part 24 Guide groove 25 Engagement Stop part 26 Contact part 27 Guide part

Claims (1)

A hollow cylindrical female member provided with an insertion end portion and a pair of locking portions, and a pair of engaging portions that are opposed to and engage with the locking portions on elastic leg portions protruding from one end of the base portion. In the buckle comprising the male member provided, the elastic leg portion of the male member is a frame-like body having a hole through which the base portion penetrates in the thickness direction of the flat plate, and faces the hole of the frame-like body. It is formed in a thin plate shape in a direction perpendicular to two parallel planar side surfaces , and in order from one end side of the base portion, a first inclined portion, a pressing portion, a locking groove portion consisting of a thin groove, the engaging portion, A pair of two inclined portions are arranged, and the distal end side of the elastic leg portion is connected by a linear distal end portion to form a closed frame, and is engaged with the base side in the vicinity of the locking groove portion A pair of the pressing portions for releasing the protrusion is formed to project outward in an arm shape, and the female member is hollow. The insertion part and the locking part are arranged in pairs from the insertion end side in order, and a pair of protruding arms of the pair of pressing parts of the male member are inserted on both sides of the insertion end part. Guide grooves, a pair of notches are formed at the tip of the elastic leg of the male member, and a pair of notches are formed on the inner wall surface of the hollow cylinder of the female member when the male member is inserted. A pair of guide portions through which the cutout portions are inserted are provided, and the inner wall surface of the hollow cylinder of the female member is in contact with and separated from the distal end portion of the elastic leg portion when the male member is completely inserted. An abutting portion to be urged is provided, the locking groove portion of the male member is locked to the locking portion of the female member, and an outer wall surface of the distal end portion of the male member is the abutting portion of the female member. When it touches the part, the insertion is completed and the engaged state is established. Buckle to.

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