Inserting buckle with strap locking function

Abstract

An inserting buckle with a strap locking function comprises a male buckle, a female buckle and a pressing buckle assembly. The male buckle comprises a main body, an elastic pin and a strap connecting buckle. The pressing buckle assembly comprises a pressing cover, a riveting shaft, a limiting plate, a torsional spring and an anti-skid plate. The gland is provided with a connecting hole, buckling teeth, a lifting part and a lifting hole. The buckling teeth are arranged on the side, close to the anti-skid plate, of the gland and are a plurality of conical teeth. Compared with the prior art, the pressing buckle assembly is arranged, the pressing cover is buckled on the anti-skid plate through the elastic force effect of the torsional spring, when a strap of a backpack penetrates through the space between the pressing cover and the anti-skid plate, the strap cannot slide due to strong tension, the strap can be fixed conveniently, and the anti-skid effect of the backpack is improved. And the strap length required by the user is kept. And the lifting part and the lifting hole are arranged, and an inhaul cable convenient to hold penetrates through the lifting part and the lifting hole, so that a user can easily unlock the pressing buckle assembly under the condition that the user wears gloves and the like, and then the length of the strap is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of buckles, in particular to a buckle with a strap locking function. 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] By connecting the shoulder straps to both ends of the male buckle and the female buckle, the two shoulder straps can be fixedly connected by buckling the male buckle and the female buckle. However, the length of the shoulder straps is determined by passing a cross bar on the male buckle through the middle of the overlapping shoulder straps, and the shoulder straps are clamped by the side of the cross bar to limit the length of the shoulder straps. The position is limited only by the friction between the shoulder straps and the cross bar. When the tension on the shoulder straps is greater than the friction between the shoulder straps and the cross bar, the shoulder straps will be stretched. Therefore, a buckle is needed that is easy to adjust the length of the shoulder straps and can lock the shoulder straps at any time to keep the length fixed. Utility Model Content

[0005] In view of this, the utility model provides a buckle with a shoulder strap locking function to solve the above technical problems.

[0006] A buckle with a strap locking function, comprising a male buckle, a female buckle for inserting the male buckle, and a buckle assembly arranged on the male buckle. The male buckle comprises a main body, a pair of elastic pins extending from the main body, and a strap connection buckle arranged on one side of the male buckle in the direction of withdrawal. The two elastic pins are arranged axially symmetrically and extend toward the side of the main body away from the strap connection buckle. The buckle assembly comprises a pressure cover arranged on the male buckle, a rivet shaft connecting the pressure cover and the male buckle, a limit plate arranged on the main body, a torsion spring arranged between the pressure cover and the main body, and an anti-slip plate arranged on the male buckle. The pressure cover is provided with a pair of connecting holes for inserting the rivet shaft, a group of buckling teeth arranged on the pressure cover, a lifting portion located on the side away from the rivet shaft, and a lifting hole arranged at the lifting portion. The buckling teeth are arranged on the side of the pressure cover close to the anti-slip plate and are a plurality of conical teeth. The lifting portion is a plate-like structure extending from the gland body, and the plate surface is tangent to the edge of the body. The lifting hole is a circular hole provided on the lifting portion, through which a drawstring is passed. The rivet shaft passes through the connecting hole and the body, and is a rivet serving as a rotation axis. The limiting plate is provided on the body and extends toward the strap connecting buckle, and the plate surface is curved, with the center of the arc directed toward the strap connecting buckle. The torsion spring is provided between the gland and the limiting plate. The anti-slip plate is provided between the body and the strap connecting buckle, and is a plate-like structure with a grid.

[0007] Furthermore, the male buckle also includes a guide tongue located between the elastic pins, and two limit blocks respectively arranged on each of the elastic pins.

[0008] Furthermore, the guide tongue is a guide structure arranged on the symmetry axis of the two elastic pins, the extension direction of which is consistent with the extension direction of the elastic pins 12, and an arc chamfer is arranged at the edge.

[0009] Furthermore, the limit block is arranged at the end of the free end of each of the elastic pins, and is arranged on the upper and lower surfaces perpendicular to the extension direction of the free end of the elastic pin, and is located on the side close to the guide tongue, and the limit block is arranged at a right angle toward the removal direction of the elastic pin and away from the guide tongue.

[0010] Furthermore, each of the elastic pins includes a guide portion located at a free end, a pressing portion connecting the guide portion and the main body, and an elastic portion connecting the guide portion and the guide tongue.

[0011] Furthermore, the guide portion is located at the free end of the elastic pin away from the shoulder strap connecting buckle, and an arc-shaped guide surface is provided on the side away from the guide plug tongue, the pressing portion is used to connect the guide portion and the main body, the thickness of the pressing portion is greater than the thickness of the guide portion, and the elastic portion is provided between the guide portion and the guide plug tongue.

[0012] Furthermore, the female buckle includes an insertion port, a guide groove arranged in the insertion port, two pressing ports arranged on both sides of the guide groove, four guide strips respectively arranged at the pressing ports, and a strap mounting port arranged at one end of the female buckle away from the insertion port.

[0013] Furthermore, the pressing port is located on both sides of the female buckle perpendicular to the opening direction of the insertion port, and the overall structure is an inwardly concave arc structure, and the pressing port is connected to the insertion port.

[0014] Furthermore, the guide strip is arranged on the inner wall of the female buckle along the arc line of the pressing opening, and the end edge of the guide strip away from the insertion opening is a right angle.

[0015] Compared with the prior art, the buckle with strap locking function provided by the utility model is provided with the buckle assembly, and the pressure cover is buckled on the anti-slip plate by the elastic force of the torsion spring. When the backpack strap passes between the pressure cover and the anti-slip plate, it can be effectively fixed without sliding due to strong pulling force, which is convenient for fixing the strap and maintaining the strap length required by the user. And by providing the lifting part and the lifting hole, and passing through the pull rope that is easy to hold, the user can easily unlock the buckle assembly even when wearing gloves, and then adjust the length of the strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a structural schematic diagram of a buckle with a shoulder strap locking function.

[0017] Figure 2 for Figure 1 An exploded schematic diagram of the split structure of the buckle with strap locking function.

[0018] Figure 3 for Figure 1 A cross-sectional schematic diagram of a buckle with a shoulder strap locking function.

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of a female buckle of a buckle with a strap locking function. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 4 As shown, it is a schematic diagram of the structure of the buckle with a shoulder strap locking function provided by the utility model. The buckle with a shoulder strap locking function comprises a male buckle 10, a female buckle 20 for inserting the male buckle 10, and a buckle assembly 30 arranged on the male buckle 10. It can be imagined that the buckle with a shoulder strap locking function also includes other functional modules such as a label arranged on the buckle surface, a shoulder 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.

[0022] 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, and a strap connecting buckle 14 arranged on one side of the male buckle 10 in the removal direction, and two limit blocks 15 respectively arranged on each of the elastic pins 11.

[0023] 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.

[0024] Each of the elastic pins 12 includes a guide portion 121 located at a free end, a pressing portion 122 connecting the guide portion 121 and the main body 11, and an elastic portion 123 connecting the guide portion 121 and the guide tongue 13. The guide 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 guide surface on the side away from the guide tongue 13 to guide the male buckle 10 when it is inserted into the female buckle 20. The pressing portion 122 is used to connect the guide portion 121 and the main body 11 to provide elasticity to the guide portion 121 so that it can form an elastic force in a direction toward the guide tongue 13 and perpendicular to the insertion direction. In addition, the thickness of the pressing portion 122 is greater than that of the guide portion 121 to provide a larger contact surface when pressed, making pressing more convenient. The elastic portion 123 is disposed between the guide portion 121 and the guide tongue 13 and is a bent spring sheet to elastically compensate the guide portion 121 and the pressing portion 122, so that the elastic force of the elastic pin 12 is stronger and the influence of plastic elastic fatigue on the buckle can be effectively reduced.

[0025] 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 an arc chamfer is arranged at the edge to guide the elastic pins 12 when they are inserted into the female buckle 20, so as to facilitate insertion.

[0026] 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.

[0027] The limiting block 15 is arranged at the end of the free end of each of the elastic pins 11, and is arranged on the upper and lower surfaces perpendicular to the extension direction of the free end of the elastic pin 11, and is located on the side close to the guide tongue 12, and the limiting block 15 is arranged at a right angle toward the extraction direction of the elastic pin 11 and away from the guide tongue 12, so as to resist against the corresponding structure of the female buckle 20, so that the male buckle 10 cannot be pulled out at will after being inserted into the female buckle 20, and its specific resisting structure will be described in detail below in conjunction with the specific structure of the female buckle 20.

[0028] The female buckle 20 is an insertion cavity made of plastic injection molding, which includes an insertion port 21, a guide groove 22 arranged in the insertion port 21, two pressing ports 23 arranged on both sides of the guide groove 22, four guide strips 24 respectively arranged at the pressing ports 23, and a strap mounting port 25 arranged at one end of the female buckle 20 away from the insertion port 21.

[0029] The width of the insertion opening 21 is such that the two elastic pins 11 can be accommodated. The guide groove 22 is located in the center of the insertion opening 21 and has a size that can just accommodate the insertion of the guide tongue 12, so that the male buckle 10 will not shake after being inserted into the female buckle 20. The two ends of the guide groove 22 in the insertion direction are connected, so that when the buckle is used in a snowy environment, it is convenient to discharge the snow in the buckle when it is buckled.

[0030] 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 generally an inwardly concave arc structure, so that when the elastic pin 11 is inserted into the female buckle 20, both sides are exposed from the pressing opening 23. The pressing opening 23 is connected to the insertion opening 22, so that the pressing portion 122 passes through when the buckle is buckled.

[0031] The guide strip 24 is arranged on the inner wall of the female buckle 20 along the arc of the pressing port 23. It can be imagined that when the male buckle 10 is inserted into the female buckle 20, the limit block 14 and the guide strip 24 abut against each other, and drive the elastic pin 11 to deform inward along the arc structure of the guide strip 24. When the male buckle 10 is fully inserted into the female buckle 20, it is at the end of the guide strip 24 and cannot abut against the limit block 14. The elastic pin 11 rebounds. At this time, the limit block 14 and the guide strip 24 are misaligned, and the elastic pin 11 must be pressed inward to pull out the male buckle 10. At the same time, the end edge of the guide strip 24 away from the insertion port 21 is at a right angle, which is convenient for abutting against the limit block 14, thereby enhancing the structural strength, so that the elastic pin 11 is not easily deformed inward when subjected to a vertical pulling force in the insertion direction of the buckle, thereby unlocking the buckle to enhance the buckling strength of the buckle, and when the buckle is used on safety protection equipment such as a helmet, it can withstand higher pulling force.

[0032] The shoulder strap mounting opening 25 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.

[0033] 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.

[0034] The buckle assembly 30 includes a pressure cover 31 arranged on the male buckle 10, a rivet shaft 32 connecting the pressure cover 31 and the male buckle 10, a limiting plate 33 arranged on the main body 11, a torsion spring 34 arranged between the pressure cover 31 and the main body 10, and an anti-slip plate 35 arranged on the male buckle 10.

[0035] The pressure cover 31 is provided with a pair of connection holes 311 for inserting the rivet shaft 32, a group of buckling teeth 312 provided on the pressure cover 31, a lifting portion 313 located on the side away from the rivet shaft 32, and a lifting hole 314 provided at the lifting portion 313. The main body section of the pressure cover 31 close to the connection hole 311 is circular, so that the pressure cover 31 can be rotated easily. The buckling teeth 312 are provided on the side of the pressure cover 31 close to the anti-slip plate 35, and are a plurality of conical teeth, and the tip of the teeth is facing the direction of the strap connection buckle 14. It can be imagined that when the strap is buckled by the buckling teeth 312, the force direction is opposite to the direction of the teeth, which can play a better locking role. The lifting portion 313 is a plate-like structure extending from the main body of the pressure cover 31, and the plate surface is tangent to the edge of the main body, so that when the pressure cover 31 rotates, the lifting portion 313 will collide with the limit plate 33, thereby limiting the rotation angle of the pressure cover 31. At the same time, by lifting the lifting portion 313, the pressure cover 31 can be rotated to achieve locking and loosening of the shoulder strap. The lifting hole 314 is a round hole set on the lifting portion 313, and a drawstring can be passed through to facilitate lifting the pressure cover 31, thereby unlocking the shoulder strap.

[0036] The rivet shaft 32 passes through the connection hole 311 and the main body 11, and is a rivet with a rotation axis, so that the gland 31 can rotate around the rivet shaft 32. Accordingly, a hole for inserting the rivet shaft 32 can be reserved on the main body 11.

[0037] The limiting plate 33 is arranged on the main body 11 and extends toward the shoulder strap connecting buckle 14, and the plate surface is curved, and the center of the arc is directed toward the shoulder strap connecting buckle 14, so that when the pressure cover 31 is arranged on the main body 11, it is located between the limiting plate 33 and the anti-slip plate 35, thereby limiting the rotation angle of the pressure cover 31.

[0038] The torsion spring 34 is disposed between the pressure cover 31 and the limit plate 33, so that the pressure cover 31 is buckled on the anti-slip plate 35 without external force. This is a common technology in the mechanical field and should be something that can be thought of by those skilled in the art, so it will not be described in detail here.

[0039] The anti-slip plate 35 is arranged between the main body 11 and the shoulder strap connecting buckle 14, and is a plate-like structure with a grid to play an anti-slip role. When the shoulder strap is wrapped around and passes through the anti-slip plate 35, it is buckled through the cover plate 31 to achieve the fixing of the tightness of the shoulder strap.

[0040] Compared with the prior art, the buckle with strap locking function provided by the utility model is provided with the buckle assembly 30, and the pressure cover 31 is buckled on the anti-slip plate 35 by the elastic force of the torsion spring 34. When the backpack strap passes between the pressure cover 31 and the anti-slip plate 35, it can be effectively fixed without sliding due to strong pulling force, which is convenient for fixing the strap and maintaining the strap length required by the user. And by providing the lifting part 313 and the lifting hole 314, a pull rope that is easy to hold is provided, so that the user can easily unlock the buckle assembly 30 even when wearing gloves, and then adjust the length of the strap.

[0041] 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 buckle with a strap locking function, characterized in that: The buckle with a strap locking function includes a male buckle, a female buckle for inserting the male buckle, and a buckle assembly arranged on the male buckle, the male buckle includes a main body, a pair of elastic pins extending from the main body, and a strap connecting buckle arranged on one side of the male buckle in a direction of withdrawal, the two elastic pins are axially symmetrically arranged and extend toward the side of the main body away from the strap connecting buckle, the buckle assembly includes a pressure cover arranged on the male buckle, a rivet shaft connecting the pressure cover and the male buckle, a limiting plate arranged on the main body, a torsion spring arranged between the pressure cover and the main body, and an anti-skid plate arranged on the male buckle, the pressure cover is provided with a pair of connecting holes for inserting the rivet shaft, a group of buckling teeth arranged on the pressure cover, a A lifting portion located on the side away from the rivet shaft, and a lifting hole arranged at the lifting portion, the locking teeth are arranged on the side of the pressure cover close to the anti-slip plate, and are multiple conical teeth, the lifting portion is a plate-like structure extending from the pressure cover body, and the plate surface is tangent to the edge of the body, the lifting hole is a circular hole arranged on the lifting portion, and a pull strap is passed through it, the rivet shaft passes through the connecting hole and the body, and is a rivet serving as a rotation axis, the limiting plate is arranged on the body and extends toward the shoulder strap connecting buckle, and the plate surface is curved, and the center of the arc is directed toward the shoulder strap connecting buckle, the torsion spring is arranged between the pressure cover and the limiting plate, and the anti-slip plate is arranged between the body and the shoulder strap connecting buckle, and is a plate-like structure with a grid.

2. The buckle with strap locking function according to claim 1, characterized in that: The male buckle further includes a guide tongue located between the elastic pins, and two limit blocks respectively arranged on each of the elastic pins.

3. The buckle with strap locking function as claimed in claim 2, characterized in that: The guide tongue is a guide structure arranged on the symmetry axis of the two elastic pins, the extension direction of which is consistent with the extension direction of the elastic pins, and an arc chamfer is arranged at the edge.

4. The buckle with strap locking function as claimed in claim 2, characterized in that: The limit block is arranged at the end of the free end of each elastic pin, and is arranged on the upper and lower surfaces perpendicular to the extension direction of the free end of the elastic pin, and is located on the side close to the guide tongue, and the limit block is arranged at a right angle towards the pull-out direction of the elastic pin and away from the guide tongue.

5. The buckle with strap locking function according to claim 1, characterized in that: Each of the elastic pins comprises a guide portion located at a free end, a pressing portion connecting the guide portion and the main body, and an elastic portion connecting the guide portion and the guide tongue.

6. The buckle with strap locking function as claimed in claim 5, characterized in that: The guide 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 the side away from the guide plug tongue. The pressing portion is used to connect the guide portion and the main body. The thickness of the pressing portion is greater than the thickness of the guide portion. The elastic portion is provided between the guide portion and the guide plug tongue.

7. The buckle with strap locking function according to claim 1, characterized in that: The female buckle includes an insertion port, a guide groove arranged in the insertion port, two pressing ports arranged on both sides of the guide groove, four guide strips respectively arranged at the pressing ports, and a strap mounting port arranged at one end of the female buckle away from the insertion port.

8. The buckle with strap locking function as claimed in claim 7, characterized in that: The pressing port is located on both sides of the female buckle perpendicular to the opening direction of the insertion port, and the whole is an inwardly concave arc structure, and the pressing port is connected to the insertion port.

9. The buckle with strap locking function according to claim 7, characterized in that: The guide strip is arranged on the inner wall of the female buckle along the arc line of the pressing opening, and the end edge of the guide strip away from the insertion opening is a right angle.

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