High-strength and high-tensile insertion buckle

Abstract

The utility model relates to a high-strength and high-tensile plug-in button, which comprises a male button and a female button, and the male buckle comprises a main body, an elastic pin, an elastic sheet and a limiting convex point. And each elastic sheet comprises a first elastic sheet and a second elastic sheet. The female buckle comprises an insertion opening, a guide insertion piece, a limiting sliding groove and a limiting insertion hole. Compared with the prior art, according to the utility model, the elastic sheet is arranged to support and elastically compensate the elastic pin, so that the reliability of the buckle is enhanced. And meanwhile, by arranging the limiting convex points and the limiting insertion holes, the insertion buckle cannot move in the insertion direction after being completely buckled, meanwhile, the insertion buckle can be unlocked only by pressing the elastic insertion pins, and the reliability and safety of the insertion buckle are greatly improved. And finally, limiting sliding grooves are formed, so that the limiting convex points can deform when the inserting buckles are buckled, and therefore, the elastic inserting pins have higher-strength elasticity, and meanwhile, the inserting buckles can be buckled without spending more strength.

Description

Technical Field

[0001] The utility model relates to the technical field of insert buckles, in particular to a high-strength and high-tensile-resistance insert buckle. Background Art

[0002] At present, there are various types and styles of backpack buckles on the market. Their function is to fasten the backpack strap passing through the backpack buckle, so as to adjust the length of the backpack strap and meet the needs of people of different heights for backpacks. The existing backpack buckle is generally composed of a male buckle and a female buckle, and the male buckle and the female buckle are respectively provided with corresponding buckle mechanisms to achieve buckling.

[0003] For example, a backpack buckle of Chinese utility model CN201822270621.8 comprises a male buckle and a female buckle that are plug-in compatible, wherein elastic pins are respectively provided on both sides of the male buckle, and the outer ends of the pins are provided with snap-on parts; the female buckle is provided with a plug-in cavity opened along the plug-in direction, one end of the plug-in cavity is an insertion port, and both sides of the other end of the plug-in cavity are respectively provided with snap-on ports that are snap-fitted with the snap-on parts of the corresponding pins, and a guide tongue is provided on the male buckle and between the two pins; a hollow hole is provided on the pin, and guide protrusions are provided on both sides of the guide tongue, and the length direction of the guide protrusion extends along the plug-in direction, and a guide groove is provided on the female buckle corresponding to the guide protrusion.

[0004] The locking is achieved by setting an elastic pin inserted into the female buckle. However, when the buckle is subjected to tension, the male buckle will generate a component force other than the pulling direction. When the tension is too large and the component force is greater than the elastic force of the pin, the buckle will be unlocked. At the same time, if it is in a strong tension environment for a long time, the pin may fatigue, causing the buckle to loosen and fail to stay locked. Therefore, conventional buckles are not suitable for collars for large dogs, or protective equipment that bears the weight of the human body for a long time, such as rock climbing and climbing. Utility Model Content

[0005] In view of this, the utility model provides a high-strength and high-tensile-resistance buckle to solve the above technical problems.

[0006] A high-strength and high-tensile buckle, comprising a male buckle and a female buckle for inserting the male buckle. The male buckle comprises a main body, a pair of elastic pins extending from the main body, two springs arranged on one side of the elastic pins, and two limiting protrusions respectively arranged on each of the springs. Each of the springs comprises a first spring connecting the limiting protrusion with the main body, and a second spring connecting the limiting protrusion with a pressing portion. The first spring and the second spring are arranged between the elastic pin and the guide tongue, and the length of the first spring is greater than the length of the guide tongue. The limiting protrusion is arranged at the connection between the first spring and the second spring, and the protrusion direction is perpendicular to the extraction direction and the pressing direction of the buckle at the same time. The female buckle comprises an insertion port, a guide plug arranged in the insertion port, two pressing ports arranged on both sides of the guide plug, four limiting slide grooves respectively arranged on both sides of the guide plug, and two limiting plug holes arranged on the female buckle. The body of each of the limiting slide grooves is in the shape of a right-angled trapezoid, with its upper bottom edge communicating with the limiting plug hole, its lower bottom edge communicating with the insertion port, its height adjacent to the guide insert, its waist facing the pressing port, and an arc-shaped chamfer at the connection with the insertion port. The limiting plug holes are two through holes opened on the wall of the female buckle, the opening direction is perpendicular to the insertion direction and the pressing direction of the male buckle at the same time, and the hole body is a long strip structure with rounded ends.

[0007] Furthermore, the male buckle also includes a guide tongue located between the elastic pins, and a shoulder strap connecting buckle arranged on one side of the male buckle in the pulling-out direction.

[0008] Furthermore, the two elastic pins are axially symmetrical with the guide tongue as the axis of symmetry, and extend toward a side of the main body away from the shoulder strap connecting buckle.

[0009] Furthermore, each of the elastic pins includes a pressing portion located at a free end, an elastic portion connecting the pressing portion and a main body, and a locking portion arranged on the pressing portion, the pressing portion is located at the free end of the elastic pin away from the shoulder strap connecting buckle, and is provided with an arc-shaped guide surface on a side away from the guide plug tongue, a limit block is also provided at the connection between the elastic portion and the main body, the limit block is located on a side of the elastic portion away from the guide plug tongue, the locking portion is located at the connection between the pressing portion and the elastic portion, and is provided on a side away from the guide plug tongue, and is a claw hook-shaped structure forming an acute angle with the surface of the elastic portion.

[0010] Furthermore, the guide tongue is a guide structure arranged on the symmetry axis of the two elastic pins, and its extension direction is consistent with that of the elastic pins.

[0011] Furthermore, the guide tongue includes two guide grooves arranged on both sides of the guide tongue, and a plurality of guide interfaces arranged on the guide grooves, the guide grooves are arranged on the central axis of the guide tongue, and the guide interfaces are arranged at one end of the guide groove away from the main body, and are a bell mouth that gradually expands from the guide groove, and the opening is in an arc shape.

[0012] Furthermore, the female buckle also includes a strap mounting port arranged at an end of the female buckle away from the insertion port.

[0013] Furthermore, the guide insert is located at the center of the insertion port and is a concave structure in a vertical cross section.

[0014] Furthermore, the pressing opening is located on both sides of the female buckle perpendicular to the opening direction of the insertion opening, and the whole is an inwardly concave arc structure, and a guiding inclined surface is provided on the side close to the insertion opening.

[0015] Compared with the prior art, the high-strength and high-tensile buckle provided by the utility model supports and elastically compensates the elastic pin by setting the spring sheet, so that the elastic force that the male buckle can withstand is greatly enhanced. At the same time, the double elastic parts reduce the impact of elastic fatigue of plastic parts, so that the reliability of the buckle is enhanced. At the same time, by setting the limiting convex point and the limiting plug hole, the buckle will not be displaced in the insertion direction after being fully engaged, and can withstand stronger tensile force. At the same time, the buckle can only be unlocked by pressing the elastic pin, which greatly enhances the reliability and safety of the buckle. Finally, by setting the limiting slide groove, the limiting convex point can be deformed when the buckle is engaged, so that the elastic pin has higher strength and elasticity, and the buckle can be engaged without spending more effort, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a high-strength and high-tensile-resistance buckle structure schematic diagram.

[0017] Figure 2 for Figure 1 Schematic diagram of the split structure of the high-strength and high-tensile buckle.

[0018] Figure 3 for Figure 1 Side view of the high-strength and high-tensile buckle.

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-section of the high-strength and high-tensile buckle on the AA section.

[0020] Figure 5 for Figure 1 A schematic cross-sectional view of a female buckle of a high-strength and high-tensile buckle. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0022] like Figures 1 to 5 As shown, it is a schematic diagram of the structure of the high-strength and high-tensile buckle provided by the utility model. The high-strength and high-tensile buckle includes a male buckle 10 and a female buckle 20 for inserting the male buckle 10. It can be imagined that the high-strength and high-tensile buckle also includes other functional modules such as a label set on the surface of the buckle, a strap connected to the buckle, etc., which are well known to those skilled in the art and will not be described one by one here.

[0023] The male buckle 10 is made of plastic injection molding and is integrally formed, and includes a main body 11, a pair of elastic pins 12 extending from the main body 11, a guide tongue 13 located between the elastic pins 12, a strap connecting buckle 14 arranged on one side of the male buckle 10 in the pulling direction, two spring sheets 15 arranged on one side of the elastic pin 12, and two limiting protrusions 16 respectively arranged on each of the spring sheets 15.

[0024] The main body 11 is a base for supporting the above structures. The two elastic pins 12 are symmetrical with the guide tongue 12 as the axis of symmetry and extend toward the side of the main body 11 away from the strap connection buckle 14, so as to be inserted into the female buckle 20 when the male buckle 10 and the female buckle 20 are buckled.

[0025] Each of the elastic pins 12 includes a pressing portion 121 at a free end, an elastic portion 122 connecting the pressing portion 121 and the main body 11, and a locking portion 123 disposed on the pressing portion 121. The pressing portion 121 is located at the free end of the elastic pin 12 away from the strap connection buckle 14, and is provided with an arc-shaped guiding surface on a side away from the guide tongue 13 to guide the male buckle 10 when it is inserted into the female buckle 20. The elastic portion 122 is used to connect the pressing portion 121 and the main body 11 to provide elasticity to the pressing portion 121 so that it can form an elastic force in a direction toward the guide tongue 13 and perpendicular to the insertion direction. A stop block 124 is also provided at the connection between the elastic part 122 and the main body 11. The stop block 124 is located on the side of the elastic part 122 away from the guide tongue 13, so that after the male buckle 10 is fully inserted into the female buckle 20, it abuts against the inner wall of the female buckle 20 to prevent the buckle from having a gap and making abnormal noise during movement. The locking part 123 is located at the connection between the pressing part 121 and the elastic part 122, and is provided on the side away from the guide tongue 13. It is a claw hook structure with an acute angle to the surface of the elastic part 122, so that when the male buckle 10 is inserted into the female buckle 20, it hooks on the corresponding part of the female buckle 20 to complete the locking. It will be described in detail below in conjunction with the specific structure of the female buckle 20.

[0026] The guide tongue 13 is a guide structure arranged on the symmetry axis of the two elastic pins 12, and its extension direction is consistent with the extension direction of the elastic pins 12, and includes two guide grooves 131 arranged on both sides of the guide tongue 13, and a plurality of guide interfaces 132 arranged on the guide grooves 131. The guide groove 131 is arranged on the central axis of the guide tongue 13, and the guide interface 132 is arranged at the end of the guide groove 131 away from the main body 11, and is a flare gradually expanding from the guide groove 131, and the opening adopts an arc shape, so as to guide the elastic pin 12 when it is inserted into the female buckle 20, so as to facilitate the insertion.

[0027] The shoulder strap connecting buckle 14 is of the style of a common backpack strap length adjustment buckle, which is used to adjust the shoulder strap length. It is a prior art and should be well known to those skilled in the art, so its structure and function will not be described in detail here.

[0028] Each of the elastic pieces 15 includes a first elastic piece 151 connecting the limiting protrusion 16 and the main body 11, and a second elastic piece 152 connecting the limiting protrusion 16 and the pressing portion 121. The first elastic piece 151 and the second elastic piece 152 are arranged between the elastic pin 12 and the guide tongue 13, and the length of the first elastic piece 151 is greater than the length of the guide tongue 13, so that when the two elastic pins 12 are pressed toward the guide tongue 13, the first elastic piece 151 and the second elastic piece 152 support the elastic pin 12 and disperse the force, so as to strengthen the strength of the elastic pin 12 so that after the buckle is buckled, the strong pulling force in the pulling direction will not generate a component force in the pressing direction, resulting in the risk of the lock being opened.

[0029] The limiting protrusion 16 is arranged at the connection between the first spring piece 151 and the second spring piece 152. The protrusion direction is perpendicular to both the pulling-out direction and the pressing direction of the buckle. It is a columnar protrusion for being inserted into the corresponding structure of the female buckle 20 to enhance the strength of the buckle.

[0030] The female buckle 20 is an insertion cavity made of plastic injection molding, which includes an insertion port 21, a guide plug 22 arranged in the insertion port 21, two pressing ports 23 arranged on both sides of the guide plug 22, four limiting slide grooves 24 respectively arranged on both sides of the guide plug 22, two limiting holes 25 arranged on the female buckle 20, and a strap mounting port 26 arranged at one end of the female buckle 20 away from the insertion port 21.

[0031] The width of the insertion opening 21 is such that the two elastic pins 12 can be accommodated. The guide insert 22 is located in the center of the insertion opening 21 and is a concave structure in a vertical cross section, so that the protrusions on both sides close to the inner wall of the female buckle 20 can be inserted into the guide groove 131, so that the male buckle 10 will not shake after being inserted into the female buckle 20.

[0032] The pressing opening 23 is located on both sides of the female buckle 20 perpendicular to the opening direction of the insertion opening 21, and is in an inwardly concave arc structure as a whole, so that when the elastic pin 12 is inserted into the female buckle 20, both sides are exposed from the pressing opening 23. A guiding inclined surface is provided on one side close to the insertion opening 21, and the locking portion 123 is engaged to achieve locking of the buckle.

[0033] The groove body of each of the limiting slide grooves 24 is in the shape of a right-angled trapezoid, with its upper bottom edge communicating with the limiting plug hole 25, the lower bottom edge communicating with the insertion port 21, the height being adjacent to the guide plug 22, the waist facing the pressing port 23 and an arc-shaped chamfer being provided at the connection with the insertion port 21, so as to press against the limiting protrusion 16 when the buckle is buckled.

[0034] The limiting plug holes 25 are two through holes opened on the wall of the female buckle 20, and the opening direction is perpendicular to the insertion direction and the pressing direction of the male buckle 10. The hole body is a long strip structure with round ends. The length direction is consistent with the pressing direction of the elastic pin 12, and the width is preferably set to be tightly matched with the limiting protrusion 16 with a small tolerance. It can be imagined that when the male buckle 10 is inserted into the female buckle 20, the limiting protrusion 16 slides along the limiting slide groove 24, and moves inward along the pressing direction as the male buckle 10 is inserted, and drives the first spring piece 151 and the second spring piece 152 Deformation occurs, and when the male buckle 10 is in the position of being fully inserted into the female buckle 20, the limiting protrusion 16 enters the limiting socket 25, and due to the loss of the support of the side wall of the limiting slide groove 24, the first spring piece 151 and the second spring piece 152 rebound, and the limiting protrusion 16 is stuck into the two ends of the limiting socket 25, thereby strengthening the strength of the socket in the removal direction, so that the buckle will not move in the removal direction when it is not unlocked, so as to enhance the buckling strength of the buckle, so that it can withstand stronger pulling force, and at the same time reduce the force required for insertion due to the enhanced elasticity of the buckle.

[0035] The shoulder strap mounting opening 26 is a hollow hole arranged at the other end of the female buckle 20 away from the insertion opening 21, so as to connect and fix the backpack strap.

[0036] The main bodies of the male buckle 10 and the female buckle 20 can be arc-shaped, and present an arc shape after being buckled, so as to play an anti-mistake effect, and at the same time, when used as a collar for a large dog, it can fit the body.

[0037] Compared with the prior art, the high-strength and high-tensile buckle provided by the utility model supports and elastically compensates the elastic pin 12 by setting the spring sheet 15, so that the elastic force that the male buckle 10 can withstand is greatly enhanced, and the double elastic member reduces the influence that the elastic fatigue of the plastic part may bring, so that the reliability of the buckle is enhanced. At the same time, by setting the limiting protrusion 16 and the limiting plug hole 25, the buckle will not be displaced in the insertion direction after being fully engaged, and can withstand stronger tensile force. At the same time, the buckle can only be unlocked by pressing the elastic pin 12, which greatly enhances the reliability and safety of the buckle. Finally, by setting the limiting slide groove 24, the limiting protrusion 16 can be deformed when the buckle is engaged, so that the elastic pin 12 has higher strength and elasticity, and the buckle can be engaged without spending more effort, thereby improving the user experience.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A high-strength and high-tensile buckle, characterized by: The high-strength and high-tensile buckle includes a male buckle and a female buckle for inserting the male buckle. The male buckle includes a main body, a pair of elastic pins extending from the main body, two spring sheets arranged on one side of the elastic pins, and two limiting protrusions respectively arranged on each of the spring sheets. Each of the spring sheets includes a first spring sheet connecting the limiting protrusion and the main body, and a second spring sheet connecting the limiting protrusion and the pressing part. The first spring sheet and the second spring sheet are arranged between the elastic pin and the guide tongue, and the length of the first spring sheet is greater than the length of the guide tongue. The limiting protrusion is arranged at the connection between the first spring sheet and the second spring sheet, and the protrusion direction is perpendicular to the pull-out direction of the buckle at the same time. Direction and pressing direction, the female buckle includes an insertion port, a guide plug arranged in the insertion port, two pressing ports arranged on both sides of the guide plug, four limiting slide grooves respectively arranged on both sides of the guide plug, and two limiting sockets arranged on the female buckle, the groove body of each limiting slide groove is a right-angled trapezoidal shape, the upper bottom edge is connected with the limiting socket, the lower bottom edge is connected with the insertion port, the height is adjacent to the guide plug, the waist is facing the pressing port and an arc-shaped chamfer is arranged at the connection with the insertion port, the limiting socket is two through holes opened on the wall of the female buckle, the opening direction is perpendicular to the insertion direction and the pressing direction of the male buckle, and the hole body is a long strip structure with round ends.

2. The high-strength and high-tensile buckle according to claim 1, characterized in that: The male buckle also includes a guide tongue located between the elastic pins, and a shoulder strap connecting buckle arranged on one side of the male buckle in the pulling-out direction.

3. The high-strength and high-tensile buckle according to claim 2, characterized in that: The two elastic pins are axially symmetrical with the guide tongue as a symmetry axis, and extend toward a side of the main body away from the shoulder strap connecting buckle.

4. The high-strength and high-tensile buckle according to claim 3, characterized in that: Each of the elastic pins includes a pressing portion located at a free end, an elastic portion connecting the pressing portion and a main body, and a locking portion arranged on the pressing portion. The pressing portion is located at the free end of the elastic pin away from the shoulder strap connecting buckle, and is provided with an arc-shaped guide surface on a side away from the guide plug tongue. A limit block is also provided at the connection between the elastic portion and the main body, and the limit block is located at a side of the elastic portion away from the guide plug tongue. The locking portion is located at the connection between the pressing portion and the elastic portion, and is provided on a side away from the guide plug tongue, and is a claw hook structure that forms an acute angle with the surface of the elastic portion.

5. The high-strength and high-tensile buckle according to claim 2, characterized in that: The guide tongue is a guide structure arranged on the symmetry axis of the two elastic pins, and its extension direction is consistent with that of the elastic pins.

6. The high-strength and high-tensile buckle according to claim 5, characterized in that: The guide tongue comprises two guide grooves arranged on both sides of the guide tongue, and a plurality of guide interfaces arranged on the guide grooves. The guide groove is arranged on the central axis of the guide tongue. The guide interface is arranged at one end of the guide groove away from the main body and is a bell mouth that gradually expands from the guide groove, and the opening is in an arc shape.

7. The high-strength and high-tensile buckle according to claim 1, characterized in that: The female buckle also includes a strap mounting opening arranged at one end of the female buckle away from the insertion opening.

8. The high-strength and high-tensile buckle according to claim 1, characterized in that: The guide insert is located at the center of the insertion port and is a concave structure in a vertical cross section.

9. The high-strength and high-tensile buckle according to claim 1, characterized in that: The pressing opening is located on both sides of the female buckle perpendicular to the opening direction of the insertion opening, and the whole is an inwardly concave arc structure, and a guiding inclined surface is provided on the side close to the insertion opening.

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