Lock catch structure and ribbon

Abstract

The invention discloses a lock catch structure and a ribbon, the lock catch structure is configured to be connected with a ribbon main body, and the lock catch structure comprises a main body part and a spring bolt; the main body part is provided with a belt penetrating hole, and the belt penetrating hole is provided with a first wall and a second wall; the spring bolt is connected to the first wall; the side, facing the second wall, of the spring bolt is provided with at least two spring bolt teeth, and the at least two spring bolt teeth are arranged at intervals in the axial direction of the belt penetrating hole. In the first direction, the distance from the tooth top of at least one spring bolt tooth to the second wall is smaller than the distance from the tooth tops of the other spring bolt teeth to the second wall, or the distance from the tooth top of at least one spring bolt tooth to the first wall is larger than the distance from the tooth tops of the other spring bolt teeth to the first wall. The heights of the spring bolt teeth are different, the shoelace main body is only in contact with the higher spring bolt teeth, the friction force between the spring bolt teeth and the shoelace main body is reduced, the insertion force required by the shoelace main body is smaller, the insertion operation of the shoelace main body is smoother, and the improvement of the assembly efficiency is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of cable ties, and in particular to a locking structure and a cable tie. Background Art

[0002] As an important component for fastening automotive wiring harnesses and pipelines, cable ties have the characteristics of simple structure, good manufacturing uniformity, easy assembly and excellent fastening effect.

[0003] In actual use, cable ties are often pre-installed manually and then assembled using specialized tools. This process involves two key performance parameters: insertion force and pull-out force. In existing technology, the insertion and connection of cable ties require significant manual force, increasing workload and reducing overall assembly efficiency.

[0004] Therefore, there is a need to improve the existing technology. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art and provide a locking structure and a cable tie.

[0006] According to one aspect of the present application, the present application provides a lock buckle structure, which is configured to be connected to a belt body, and the lock buckle structure includes a main body and a lock tongue; the main body is provided with a belt through hole, and the belt through hole has a first wall and a second wall arranged opposite to each other; the lock tongue is connected to the first wall, and the lock tongue is configured to lock the belt body; the lock tongue is provided with at least two lock tongue teeth on the side facing the second wall, and the at least two lock tongue teeth are arranged at intervals along the axial direction of the belt through hole; in a first direction, the distance from the tooth top of at least one of the lock tongue teeth to the second wall is smaller than the distance from the tooth top of the other lock tongue teeth to the second wall, and the first direction is perpendicular to the second wall; or, the distance from the tooth top of at least one of the lock tongue teeth to the first wall is greater than the distance from the tooth top of the other lock tongue teeth to the first wall.

[0007] In one embodiment, in the first direction, the distance from the tooth top of the locking tongue tooth to the second wall is recorded as h, and the distance h gradually increases along the insertion direction of the belt body.

[0008] In one embodiment, in the first direction, the height differences between the tooth tops of adjacent locking bolt teeth are the same.

[0009] In one embodiment, the height difference between the tooth tops of adjacent lock tongue teeth is recorded as d, and satisfies: 0.08 mm ≤ d ≤ 0.16 mm.

[0010] In one embodiment, the tops of the lock tongue teeth are connected to form a connecting surface, and the angle β between the tangent plane of the connecting surface and the second wall or the first wall satisfies: 1°≤β≤15°.

[0011] In one embodiment, 4°≤β≤9°.

[0012] In one embodiment, the two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; the lock tongue tooth has a contact surface on the side close to the first end, and the slope of the contact surface of each lock tongue tooth gradually decreases along the insertion direction of the belt body.

[0013] In one embodiment, a groove is provided at the root of the locking tongue.

[0014] In one embodiment, the two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; a stop block is provided on the side of the lock tongue close to the first end, and the stop block is spaced apart from the first wall.

[0015] In one embodiment, the two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; a limiting protrusion is provided on the side of the lock tongue close to the second end, and the surface of the limiting protrusion facing the second wall is recorded as a crimping surface, and the crimping surface is located between the top of the lock tongue teeth close to the second end and the first wall.

[0016] In one embodiment, a weight-reducing notch is provided on a side of the main body away from the belt body.

[0017] According to another aspect of the present application, a cable tie is provided, comprising any of the aforementioned locking structures; the cable tie further comprises a belt body, which is connected (integrally or separately) to the main body.

[0018] In one embodiment, the belt body is configured to fix the wiring harness, and the belt body includes a base, belt body teeth and anti-slip ribs; the base has a first surface and a second surface arranged opposite to each other; the belt body tooth array is arranged on the first surface, and the belt body teeth are configured to be connected to the locking structure; the anti-slip ribs are arranged on the second surface, and the anti-slip ribs are crimped to the wiring harness; the anti-slip ribs are arranged at intervals of at least two, and in the three-dimensional coordinate system, the size of the anti-slip ribs in the Y-axis direction is H, satisfying: 0.2㎜≤H≤0.4㎜, the size of the anti-slip ribs in the X-axis direction is W, satisfying: 0.4㎜≤W≤0.8㎜, the Y-axis direction is perpendicular to the first surface, and the X-axis direction is parallel to the spacing direction of the anti-slip ribs.

[0019] In one embodiment, 0.25 mm ≤ H ≤ 0.35 mm, and 0.5 mm ≤ W ≤ 0.7 mm.

[0020] In one embodiment, the distance between two adjacent anti-slip ribs is L1, which satisfies: 2.1 mm ≤ L1 ≤ 3.4 mm.

[0021] In one embodiment, the size of the base in the Y-axis direction is T, which satisfies: 0.65 mm ≤ T ≤ 0.75 mm; the size of the base in the X-axis direction is L2, which satisfies: 3.7 mm ≤ L2 ≤ 4.2 mm.

[0022] In one embodiment, 3.7 mm ≤ L2 ≤ 3.9 mm.

[0023] In one embodiment, in the Y-axis direction, the size of the belt body is T1, and the distance from the tooth top of the belt body teeth to the second surface is H1, which satisfies: 0.2 mm ≤ T1 - H1 ≤ 0.4 mm.

[0024] In one embodiment, 1.3 mm ≤ T1 ≤ 1.5 mm.

[0025] In one embodiment, the size of the belt body in the Y-axis direction is T1, which satisfies: 1.35 mm ≤ T1 ≤ 1.45 mm; the size of the base in the X-axis direction is L2, which satisfies: 3.9 mm ≤ L2 ≤ 4.1 mm.

[0026] The beneficial effects of the present application are as follows: the heights of the various lock tongue teeth are inconsistent. In the process of inserting the belt body from one side of the belt hole to the other side, the belt body only contacts some of the lock tongue teeth, not all of the lock tongue teeth. The belt body only contacts the lock tongue teeth with higher heights, which reduces the friction between the lock tongue teeth and the belt body (belt body teeth). That is, the insertion force required for the belt body is smaller, the insertion operation of the belt body is smoother, the workers' assembly feel can be significantly improved, and the smaller belt body insertion force can reduce the labor intensity of the installers, which is conducive to improving the assembly efficiency. In addition, when the belt body is subjected to a force opposite to the insertion direction, the belt body teeth can drive the lock tongue to deform, that is, the lock tongue rotates around the root of the lock tongue. During the deformation of the lock tongue, the lock tongue teeth with lower height rise and abut against the belt body teeth, thereby improving the pull-off force of the belt body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0028] Figure 1 This is a schematic diagram of a cable tie provided in an embodiment of the present application.

[0029] Figure 2 yes Figure 1 Front view of .

[0030] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle.

[0031] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0032] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0033] Figure 6 It is a schematic diagram of a lock tongue tooth provided in an embodiment of the present application.

[0034] Figure 7 This is a schematic diagram of the coordination between the belt body teeth and the lock tongue teeth provided in an embodiment of the present application.

[0035] Figure 8 This is a cross-sectional view of a belt body provided in an embodiment of the present application.

[0036] Figure 9 This is a schematic diagram of the connection between a belt body and a wiring harness provided in an embodiment of the present application.

[0037] Figure 10 It is a structural diagram of a belt body in the prior art.

[0038] In the picture:

[0039] 10. Locking structure; 11. Main body; 111. Belt hole; 1111. First wall; 1112. Second wall; 112. Weight-reducing notch; 12. Lock tongue; 121. Lock tongue teeth; 1211. Abutment surface; 1212. Limiting surface; 122. Groove; 123. Retaining protrusion; 124. Limiting protrusion; 1241. Pressing surface;

[0040] 20. Belt body; 21. Belt teeth; 22. Base; 221. First surface; 222. Second surface; 23. Anti-slip ribs;

[0041] 30. Connecting surface;

[0042] 40. First end;

[0043] 50, second end;

[0044] 60, section;

[0045] 70. Clamping portion;

[0046] 80. Wiring harness;

[0047] 90. Anti-slip pattern. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] The lock structure and cable tie in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] In the prior art, when performing cable tie transfer operations, manual labor requires a relatively large insertion force to complete the cable tie body insertion operation, which increases the workload of personnel and reduces the overall assembly efficiency.

[0052] To solve the above technical problems, an embodiment of the present application provides a buckle structure configured to be connected to a belt body, the buckle structure comprising a main body and a locking tongue; the main body is provided with a belt through hole, the belt through hole having a first wall and a second wall arranged opposite each other; the locking tongue is connected to the first wall and is configured to lock the belt body; the locking tongue is provided with at least two locking tongue teeth on a side facing the second wall, the at least two locking tongue teeth being spaced apart along the axial direction of the belt through hole; in a first direction, the distance from the tooth top of at least one of the locking tongue teeth to the second wall is smaller than the distance from the tooth top of the remaining locking tongue teeth to the second wall, and the first direction is perpendicular to the second wall; alternatively, the distance from the tooth top of at least one of the locking tongue teeth to the first wall is greater than the distance from the tooth top of the remaining locking tongue teeth to the first wall. This is described in detail below.

[0053] See Figure 1-Figure 4The lock buckle structure 10 is configured to be connected to the belt body 20, and the lock buckle structure 10 includes a main body 11 and a lock tongue 12; the main body 11 is provided with a belt through hole 111, and the belt through hole 111 has a first wall 1111 and a second wall 1112 arranged opposite to each other; the lock tongue 12 is connected to the first wall 1111, and the lock tongue 12 is configured to lock the belt body 20; the lock tongue 12 is provided with at least two lock tongue teeth 121 on the side facing the second wall 1112, and the at least two lock tongue teeth 121 are arranged at intervals along the axial direction of the belt through hole 111; in the first direction, the distance from the tooth top of at least one lock tongue tooth 121 to the second wall 1112 is less than the distance from the tooth top of the other lock tongue teeth 121 to the second wall 1112, and the first direction is perpendicular to the second wall 1112.

[0054] In this embodiment, the second wall 1112 is used as a reference to define the position of the lock tongue teeth 121. Figure 4 Height difference in perspective; of course, relevant definitions can also be made based on the first wall 1111, for example, the distance from the tooth top of at least one lock tongue tooth 121 to the first wall 1111 is greater than the distance from the tooth top of the remaining lock tongue teeth 121 to the first wall 1111; similarly, in the following embodiments, the relevant description of the lock tongue tooth 121 can be discussed based on one of the second wall 1112 and the first wall 1111, which will not be repeated here.

[0055] It is worth mentioning that see Figure 3 The second wall 1112 is provided between the first wall 1111 and the belt body 20. In this embodiment, the locking tongue 12 is connected to the first wall 1111; in some embodiments, the locking tongue 12 can also be connected to the second wall 1112; and even in some embodiments, the locking tongue 12 can also be provided on the first wall 1111. Figure 2 From the perspective, one of the left and right inner walls of the belt hole 111 falls within the protection scope of this application.

[0056] The distance from the tooth top of at least one lock tongue tooth 121 to the second wall 1112 is smaller than the distance from the tooth top of the remaining lock tongue teeth 121 to the second wall 1112. Figure 4From the perspective, the heights of the various lock tongue teeth 121 are inconsistent. During the process of inserting the belt body 20 from one side of the belt hole 111 to the other side, the belt body 20 only contacts some of the lock tongue teeth 121, not all of the lock tongue teeth 121. The belt body 20 only contacts the lock tongue teeth 121 with a higher height (the higher the height of the lock tongue teeth 121, that is, the closer the tooth top of the lock tongue tooth 121 is to the second wall 1112, the same below), thereby reducing the friction between the lock tongue teeth 121 and the belt body 20 (belt body teeth 21), that is, the insertion force required for the belt body 20 (the force required to insert the belt body 20 into the belt hole 111) is smaller, the insertion operation of the belt body 20 is smoother, the workers' assembly feel can be significantly improved, and the smaller belt body 20 insertion force can reduce the labor intensity of the installers, which is conducive to improving the assembly efficiency.

[0057] When the belt body 20 is subjected to a direction that is different from the insertion direction (such as Figure 3-7 When the belt body 20 has a tendency to withdraw from the belt hole 111 (i.e., it is subjected to a force opposite to the insertion direction), the body teeth 21 can drive the lock tongue 12 to deform (i.e., the lock tongue 12 rotates around the root of the lock tongue 12). During the deformation of the lock tongue 12, the lock tongue 12 is engaged with the body teeth 21, thereby preventing the body 20 from withdrawing from the belt hole 111. During the process, the lock tongue tooth 121 with a lower height rises (moves toward the second wall 1112) and abuts against the belt body teeth 21 (the lock tongue tooth 121 with a higher height also abuts against the belt body teeth 21), thereby improving the pulling-off force of the belt body 20 (the force required to pull the belt body 20 off the restriction of the lock tongue 12; the greater the pulling-off force required for the belt body 20, the more reliable the connection between the belt body 20 and the lock tongue 12), that is, the belt body 20 is not easy to withdraw from the belt threading hole 111, thereby improving customer satisfaction.

[0058] It should be noted that the first direction is Figure 2-7 As shown in the middle direction V, the axial direction of the belt hole 111 is Figure 4 In addition, in the drawings of the present embodiment, the second wall 1112 is illustrated as extending in the direction aligned with the U direction. Of course, if the second wall 1112 is tilted or curved (not completely aligned with the U direction), as long as the design is consistent with the present application, it is also within the scope of protection of the present application.

[0059] It is worth mentioning that the belt body 20 and the main body 11 can be integrally formed, or can be formed separately and then assembled, and the relevant design can be made according to the actual usage situation.

[0060] See Figure 5In the first direction, the distance from the tooth top of the lock tongue tooth 121 to the second wall 1112 is recorded as h, and the distance h gradually increases along the insertion direction of the belt body 20.

[0061] For the sake of convenience, the smaller the value of h is, the higher the height of the corresponding lock tongue tooth 121 is.

[0062] In this embodiment, the distance h gradually increases along the insertion direction of the belt body 20, that is, the height of the lock tongue teeth 121 gradually decreases in the insertion direction; Figure 5 Taking the perspective as an example, the insertion direction of the belt body 20 is from right to left, and the lock tongue teeth 121 are arranged with the left lower and the right higher. When the belt body 20 is inserted, the belt body 20 only abuts against the lock tongue tooth 121 on the far right. The insertion force required for the belt body 20 is small, the insertion operation is smoother, the workers' assembly feel can be significantly improved, the labor intensity of the installers is reduced, and it is conducive to improving the assembly efficiency.

[0063] When the belt body 20 is subjected to a force opposite to the insertion direction, the belt body teeth 21 drive the highest lock tongue teeth 121, and then drive the lock tongue 12 to rotate to the right around its root. During the rotation of the lock tongue 12, the lock tongue teeth 121 with lower height on the left side are gradually raised until they abut against the belt body teeth 21 to restrict the belt body 20; due to the gradual change in the height of the lock tongue teeth 121, during the rotation of the lock tongue 12, the lock tongue teeth 121 can be raised in sequence, and finally all the lock tongue teeth 121 are ensured to abut against the belt body teeth 21, thereby improving the pulling force of the belt body 20, and the belt body 20 is not easy to withdraw from the belt threading hole 111, thereby improving customer satisfaction.

[0064] It should be noted that, in some embodiments, in the insertion direction of the belt body 20, the height of each lock tongue tooth 121 may not be gradual. One lock tongue tooth 121 may be lower in height, while the lock tongue teeth 121 on both sides thereof may be higher in height, etc., which is comprehensively considered based on factors such as the specific structure of the lock tongue 12 and the design requirements of the pull-off force.

[0065] In some embodiments, in the first direction, the height differences between the tooth tops of adjacent lock tongue teeth 121 are the same, denoted as d, and satisfy: 0.08 mm ≤ d ≤ 0.16 mm, for example, 0.08 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, etc.

[0066] In this embodiment, the height differences between adjacent lock tongue teeth 121 are the same. When the belt body 20 is subjected to a force opposite to the insertion direction (for the sake of convenience, this force is recorded as a reaction force, the same below), each lock tongue tooth 121 becomes highly consistent with the rotation of the lock tongue 12, and the contact area between each lock tongue tooth 121 and the belt body tooth 21 is equal, that is, the interaction force between each lock tongue tooth 121 and the belt body tooth 21 is the same. Each lock tongue tooth 121 (and the belt body teeth 21) is subjected to uniform force, and there will be no situation where a lock tongue tooth 121 is subjected to excessive force and is damaged. The belt body 20 is not easy to withdraw from the belt threading hole 111, thereby improving the service life and economic efficiency.

[0067] When the value of d is less than 0.08 mm, the height difference between each lock tongue tooth 121 is small, that is, the height of each lock tongue tooth 121 tends to be equal, and the insertion force required for the belt body 20 increases, which is not conducive to the plugging operation of the belt body 20; when the value of d is greater than 0.16 mm, the height difference between each lock tongue tooth 121 is large. When the belt body 20 is subjected to a reaction force, the lock tongue 12 needs to rotate a larger range to make the lock tongue tooth 121 with a lower height rise to abut against the belt body tooth 21. The lock tongue 12 is prone to fatigue damage due to excessive rotation range, which is not conducive to improving the service life of the lock buckle structure 10.

[0068] In some embodiments, the tooth tops of each lock tongue tooth 121 are connected to form a connecting surface 30, and the angle between the cut surface 60 of the connecting surface 30 and the second wall 1112 or the first wall 1111 is β, satisfying: 1°≤β≤15°, for example 1°, 4°, 5°, 7°, 9°, 11°, 15°, etc.

[0069] The connecting surface 30 formed by connecting the tooth tops of the lock tongue teeth 121 can be a plane (such as Figure 5 ), or a curved surface (as shown in Figure 6 As shown), when the connecting surface 30 is a plane, the tangent surface 60 of the connecting surface 30 is the connecting surface 30 itself; when the connecting surface 30 is a curved surface, the tangent surface 60 of the connecting surface 30 is the surface tangent to the connecting surface 30.

[0070] When the value of β is less than 1°, the section 60 tends to be horizontal ( Figure 5 When the angle β is greater than 15°, the height difference between the various lock tongue teeth 121 is relatively large. When the belt body 20 is subjected to a reaction force, the lock tongue 12 needs to rotate a large range to raise the lock tongue teeth 121 with a lower height to abut against the belt body teeth 21. If the rotation range of the lock tongue 12 is too large, it is easy to be fatigued and damaged, which is not conducive to improving the service life of the lock buckle structure 10.

[0071] In some embodiments, 4°≤β≤9°, for example 4°, 5°, 7°, 9°, etc., the height difference between each lock tongue tooth 121 is relatively moderate, which can not only reduce the insertion force required for the belt body 20, but also avoid the lock tongue 12 from rotating too far and easily causing fatigue damage.

[0072] See Figure 4 and Figure 7 In some embodiments, the two ends of the belt hole 111 in the insertion direction of the belt body 20 are the first end 40 and the second end 50, and the belt body 20 is inserted from the first end 40 toward the second end 50; the lock tongue tooth 121 has a contact surface 1211 on the side close to the first end 40, and the slope of the contact surface 1211 of each lock tongue tooth 121 gradually decreases along the insertion direction of the belt body 20.

[0073] The smaller the slope of the abutting surface 1211, the flatter the abutting surface 1211. In this embodiment, Figure 7 From the perspective, the insertion direction of the belt body 20 is from right to left, and the inclination of the abutting surface 1211 of the lock tongue tooth 121 decreases from right to left. When the belt body 20 is subjected to a reaction force, the lock tongue 12 rotates around its root. During the rotation, the inclination of the abutting surface 1211 of the left lock tongue tooth 121 becomes larger, and the abutting surfaces 1211 from right to left abut against different belt body teeth 21 in turn, which increases the contact area and improves the pulling-off force of the belt body 20. The belt body 20 is not easy to withdraw from the belt hole 111, thereby improving customer satisfaction.

[0074] For ease of understanding, Figure 7 Taking the example for detailed description, in this embodiment, three lock tongue teeth 121 are provided in sequence from right to left, and each lock tongue tooth 121 also has a limiting surface 1212 on the side close to the second end 50; when the belt body 20 is subjected to the reverse force, the belt body teeth 21 abut against the limiting surface 1212 of the rightmost lock tongue tooth 121, and drive the lock tongue 12 to rotate. During the rotation process, since the inclination of the abutting surface 1211 of the leftmost lock tongue tooth 121 is smaller than the inclination of the abutting surface 1211 of the middle lock tongue tooth 121, the abutting surface 1211 of the middle lock tongue tooth 121 first abuts against the belt body teeth 21, and continues to apply a reaction force until the abutting surface 1211 of the leftmost lock tongue tooth 121 abuts against the belt body teeth 21, thereby increasing the pulling force of the belt body 20, and the belt body 20 is not easy to withdraw from the belt threading hole 111. When the inclination of the abutting surface 1211 of the leftmost lock tongue tooth 121 is greater than the inclination of the abutting surface 1211 of the middle lock tongue tooth 121, during the rotation of the lock tongue 12, the abutting surface 1211 of the leftmost lock tongue tooth 121 will contact the belt body teeth 21 before the abutting surface 1211 of the middle lock tongue tooth 121, so that the abutting surface 1211 in the middle position cannot abut against the belt body teeth 21, thereby reducing the pulling-off force of the belt body 20.

[0075] In some embodiments, a groove 122 is provided at the base of the locking tongue 12 to form a retaining protrusion 123 on a side of the groove 122 away from the first wall 1111 .

[0076] By setting the groove 122, the thickness of the root of the lock tongue 12 can be reduced, and the flexibility of the lock tongue 12 is improved. When the belt body 20 is plugged in, the higher lock tongue teeth 121 have less restriction on the belt body 20, and the belt body 20 is more easily plugged into the belt hole 111; at the same time, a stop protrusion 123 is formed on the side of the groove 122 away from the first wall 1111. When the lock tongue 12 rotates and deforms, the stop protrusion 123 can abut against the first wall 1111, avoiding excessive deformation of the lock tongue 12 and affecting its own elasticity, which is beneficial to improving the service life of the lock buckle structure 10.

[0077] In some embodiments, a projection plane η perpendicular to the first direction is set, and the orthographic projection of the lock tongue tooth 121 on the projection plane η is located within the orthographic projection of the second wall 1112 on the projection plane η, that is, the lock tongue tooth 121 and the second wall 1112 are arranged opposite to each other. When the belt body 20 is inserted into the belt hole 111, the lock tongue tooth 121 can press the belt body 20 onto the second wall 1112, which is beneficial to the stability of the connection between the belt body 20 and the lock buckle structure 10; in addition, the orthographic projection of the anti-recognition protrusion 123 on the projection plane η is located outside the orthographic projection of the second wall 1112 on the projection plane η. Before the belt body 20 is inserted into the belt hole 111, the end of the belt body 20 needs to be aligned with the belt hole 111. Through the arrangement of the anti-recognition protrusion 123, the anti-recognition protrusion 123 can be seen from the outside of the main body 11, that is, the end of the belt body 20 will not enter the groove 122 during the insertion operation, which is beneficial to the smooth insertion of the belt body 20.

[0078] In some embodiments, the two ends of the belt hole 111 in the direction of insertion of the belt body 20 are the first end 40 and the second end 50, and the belt body 20 is inserted from the first end 40 toward the second end 50; a limiting protrusion 124 is provided on the side of the lock tongue 12 close to the second end 50, and the surface of the limiting protrusion 124 facing the second wall 1112 is recorded as a crimping surface 1241, and the crimping surface 1241 is located between the tooth top of the lock tongue tooth 121 close to the second end 50 and the first wall 1111.

[0079] When the belt body 20 is subjected to a reverse force, the crimping surface 1241 can press against the tooth top of the belt body tooth 21 as the lock tongue 12 rotates, thereby improving the pull-off force of the belt body 20; the crimping surface 1241 is arranged between the tooth top of the lock tongue tooth 121 (close to the second end 50) and the first wall 1111, that is, the crimping surface 1241 is lower than the tooth top of the lock tongue tooth 121 (close to the second end 50), which can ensure that after the lock tongue tooth 121 abuts against the belt body tooth 21, the crimping surface 1241 abuts against the tooth top of the belt body tooth 21; when the crimping surface 1241 is higher than the tooth top of the lock tongue tooth 121, the crimping surface 1241 will abut against the belt body tooth 21 before the lock tongue tooth 121, which is not conducive to improving the pull-off force of the belt body 20.

[0080] In some embodiments, a weight-reducing notch 112 is provided on a side of the main body 11 away from the belt body 20 .

[0081] The setting of the weight-reducing notch 112 can save some materials, reduce the weight of the product, and thus reduce the production cost. The specific setting position of the weight-reducing notch 112 is not limited, and can be Figure 3 The weight reduction notch 112 may be provided on the left side, or the right side, or on both sides of the viewing angle, but is not limited thereto.

[0082] See Figures 8-10 , the belt body 20 is adapted to the lock structure 10, and the belt body 20 is configured to fix the wiring harness 80, the belt body 20 includes a base 22, a belt body tooth 21 and an anti-slip rib 23; the base 22 has a first surface 221 and a second surface 222 arranged opposite to each other; the belt body teeth 21 are arranged in an array on the first surface 221, and the belt body teeth 21 are configured to be connected to the lock structure 10; the anti-slip rib 23 is arranged on the second surface 222, and the anti-slip rib 23 is crimped to the wiring harness 80; the anti-slip rib 23 is provided with at least two at intervals, in the three-dimensional coordinate system, the size of the anti-slip rib 23 in the Y-axis direction is H, satisfying: 0.2㎜≤H≤0.4㎜, the size of the anti-slip rib 23 in the X-axis direction is W, satisfying: 0.4㎜≤W≤0.8㎜, the Y-axis direction is perpendicular to the first surface 221, and the X-axis direction is parallel to the spacing direction of the anti-slip rib 23.

[0083] The anti-slip ribs 23 are crimped onto the wiring harness 80, and the contact area between the anti-slip ribs 23 and the wiring harness 80 is smaller (compared to the second surface 222 directly contacting the wiring harness 80). Under the same force (pressure on the wiring harness 80), the anti-slip ribs 23 exert greater pressure on the wiring harness 80, and relative displacement (along the axial direction of the wiring harness 80) is not easy to occur between the wiring harness 80 and the anti-slip ribs 23. In addition, the anti-slip ribs 23 are crimped onto the wiring harness 80, and the surface of the wiring harness 80 is pressed (resisted by the anti-slip ribs 23) and deformed, similar to the anti-slip ribs 23 embedded in the surface of the wiring harness 80, which can further enhance the axial (axial direction of the wiring harness 80) anti-slip ability of the belt body 20.

[0084] It is worth mentioning that multiple anti-slip ribs 23 are arranged at intervals, which is conducive to improving the anti-slip ability. However, the number of anti-slip ribs 23 cannot be increased blindly. More anti-slip ribs 23 are not conducive to the lightweight setting of the belt body 20, and will increase the material used in the belt body 20, increasing the production cost and the use cost; therefore, the number of anti-slip ribs 23 needs to be comprehensively considered based on the specific size of the belt body 20.

[0085] When performing the operation of fixing the wiring harness 80, the belt body teeth 21 are connected to the locking structure 10, and the belt body main body 20 is locked by the locking structure 10. At this time, the belt body main body 20 is arranged around the circumference of the wiring harness 80, and the anti-slip ribs 23 are pressed onto the wiring harness 80. Through the setting of the anti-slip ribs 23, the fastening effect of the belt body main body 20 on the wiring harness 80 can be improved, that is, the wiring harness 80 is not easy to slide along the axial direction of the wiring harness 80.

[0086] When the value of H is less than 0.2 mm, the size of the anti-slip rib 23 in the Y-axis direction (i.e., the thickness of the anti-slip rib 23, the same below) is too small, that is, the side of the base 22 where the anti-slip rib 23 is provided tends to be flat, and the fixing effect on the wiring harness 80 is poor. Under the action of external force, the wiring harness 80 is more likely to be displaced along the axial direction (the axial direction of the wiring harness 80); when the value of H is greater than 0.4 mm, the thickness of the anti-slip rib 23 is larger, and more materials are required to make the belt body 20, which increases the production cost.

[0087] When the value of W is less than 0.4 mm, the size of the anti-slip rib 23 in the X-axis direction (i.e., the width of the anti-slip rib 23, the same below) is too small. When the anti-slip rib 23 is crimped onto the wire harness 80, the pressure of the anti-slip rib 23 on the wire harness 80 is too large, which can easily damage the wire harness 80. In addition, the small thickness of the anti-slip rib 23 increases the difficulty of production and increases the production cost. When the value of W is greater than 0.8 mm, the width of the anti-slip rib 23 is larger, and the contact area between the anti-slip rib 23 and the wire harness 80 increases, which is not conducive to the improvement of the axial anti-slip performance of the belt body 20 (although the contact area increases, the pressure of the anti-slip rib 23 on the wire harness 80 becomes smaller). In addition, the anti-slip rib 23 with a larger width requires more manufacturing materials, which is not conducive to the lightweight design of the belt body 20 and increases the production cost.

[0088] It should be noted that H = T1 - H1, where T1 is the size of the belt body 20 in the Y-axis direction, and H1 is the distance (in the Y-axis direction) from the tooth top of the belt body tooth 21 to the second surface 222. During actual measurement operations, the values ​​of T1 and H1 are relatively easy to measure. For example, the value of H1 can be measured using tools such as a double-pointed micrometer or a small-headed micrometer, and is not specifically limited here. When the value of T1 is less than 1.3 mm, the mechanical strength of the belt body 20 is insufficient and the belt body 20 is easily broken. When the value of T1 is greater than 1.5 mm, it is not conducive to the lightweight design of the belt body 20. In addition, the provision of the anti-slip ribs 23 can also improve the mechanical strength of the belt body 20, which is beneficial to increasing the service life of the belt body 20.

[0089] In some embodiments, the size of the anti-slip rib 23 in the Y-axis direction is H, for example, 0.2 mm, 0.3 mm, 0.4 mm, etc.; the size of the anti-slip rib 23 in the X-axis direction is W, for example, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.; in this way, the setting of the above parameters can ensure that the belt body 20 has good axial anti-slip ability, and is conducive to the lightweight design of the belt body 20.

[0090] The performance of the technical solution provided in the embodiments of this application is evaluated in conjunction with specific embodiments below.

[0091] Examples 1-7 and Comparative Examples 1-2 are provided. Specific parameters and test results are detailed in Table 1. The axial anti-slip force, after securing the belt body 20, applies an axial force to the harness 80. When the harness 80 undergoes axial displacement, the tension value is recorded. Multiple sets of data can be tested and averaged. Furthermore, the axial anti-slip force (PVC) is the anti-slip force applied when electrical tape is wrapped around the harness 80 and the anti-slip ribs 23 are crimped onto the electrical tape. Furthermore, the cable tie in Comparative Example 1 lacks the anti-slip ribs 23, while the cable tie in Comparative Example 2 has an anti-slip pattern 90 on one side. Here, H represents the height of the anti-slip pattern 90. L2 represents the width (dimension in the X-axis direction) of the belt body 20 (base 22), and T represents the thickness (dimension in the Y-axis direction) of the base 22.

[0092] Table 1

[0093]

[0094] It can be seen from the data in Table 1 that the belt body 20 (base 22) provided with anti-slip ribs 23 has better axial anti-slip ability, and the value of the anti-slip force is much greater than that of the cable tie in comparative example 1 without anti-slip ribs 23, and is also much greater than that of the cable tie with anti-slip pattern 90; in the cable tie in comparative example 1, even if the base 22 has a larger width and thickness (compared to embodiments 1-7), in the absence of the anti-slip ribs 23, the axial anti-slip force is still low, and the restraining effect on the wiring harness 80 is average; in the cable tie in comparative example 2, although it has a smaller width, which achieves lightweighting of the cable tie to a certain extent, the width of the belt body 20 (base 22) is reduced, and the contact area between the cable tie itself and the wiring harness 80 is reduced. Even under the action of the anti-slip pattern 90, the axial anti-slip force is still low, and the restraining effect on the wiring harness 80 is average.

[0095] In some embodiments, 0.25 mm ≤ H ≤ 0.35 mm, and 0.5 mm ≤ W ≤ 0.7 mm.

[0096] The thickness and width of the anti-skid ribs 23 are moderate, which can ensure that the belt body 20 has good axial anti-skid ability and is conducive to the lightweight design of the belt body 20.

[0097] In some embodiments, the distance between two adjacent anti-slip ribs 23 is L1, which satisfies: 2.1 mm≤L1≤3.4 mm, for example, 2.1 mm, 2.5 mm, 3.1 mm, 3.4 mm, etc.

[0098] When the value of L1 is less than 2.1 mm, the distance between the two anti-slip ribs 23 is too small, which increases the difficulty of making the anti-slip ribs 23; when the value of L1 is greater than 3.4 mm, the distance between the two anti-slip ribs 23 is too large. When fixing the wiring harness 80, the two anti-slip ribs 23 respectively restrict the wiring harness 80, and the restriction ability is poor (compared to the joint action of the two anti-slip ribs 23). The wiring harness 80 is prone to axial displacement, which is not conducive to improving the anti-slip performance of the belt body 20. Moreover, the larger the value of L1, the larger the required width of the base 22 (the size of the base 22 in the X-axis direction), which is not conducive to the lightweight setting of the belt body 20.

[0099] In some embodiments, the size of the base 22 in the Y-axis direction is T, which satisfies: 0.65 mm ≤ T ≤ 0.75 mm; the size of the base 22 in the X-axis direction is L2, which satisfies: 3.7 mm ≤ L2 ≤ 4.2 mm.

[0100] When the value of T is less than 0.65 mm, the size of the base 22 in the Y-axis direction (i.e., the thickness of the base 22, the same below) is small, and the mechanical strength of the belt body 20 is average. When the value of T is greater than 0.75 mm, the mechanical strength of the belt body 20 is enhanced, but it is not conducive to the overall lightweight design of the belt body 20, and will increase the production cost.

[0101] When the value of L2 is less than 3.7 mm, the size of the base 22 in the X-axis direction (i.e., the width of the base 22, the same below) is small. The small width of the base 22 is not conducive to the arrangement of the anti-slip ribs 23, and the mechanical strength of the belt body 20 is average. When the value of L2 is greater than 4.2 mm, the mechanical strength of the belt body 20 is enhanced, but it is not conducive to the overall lightweight design of the belt body 20, and will increase the production cost.

[0102] In summary, when the base 22 is within the above-mentioned size range, it can be relatively lightweight while having sufficient mechanical strength, which is beneficial to improving the service life.

[0103] In some embodiments, the size of the base 22 in the Y-axis direction is T, for example, 0.65 mm, 0.7 mm, 0.75 mm, etc.; the size of the base 22 in the X-axis direction is L2, for example, 3.7 mm, 3.9 mm, 4.2 mm, etc.; in this way, the setting of the above parameters can ensure that the belt body 20 has sufficient mechanical strength, and is conducive to the lightweight design of the belt body 20.

[0104] The performance of the technical solution provided in the embodiment of the present application is evaluated in combination with specific implementation.

[0105] Examples 8-12 and comparative example 3 are provided. Specific parameters and test results are detailed in Table 2. The breaking force of the belt body 20 can be measured by a pull-out tester. The force when the belt body 20 is pulled apart by the pull-out tester is the breaking force of the belt body 20. The average value can be obtained by testing multiple sets of data. In addition, the unit length weight represents the weight of one unit length of the base 22 along its extension direction. When measuring, a unit length of material of the base 22 (the belt body 20) in the extension direction is cut off and the weight of one unit length of the material is weighed.

[0106] Table 2

[0107] project T / ㎜ L2 / ㎜ Belt body breaking strength / N Weight per unit length / ㎎ Example 8 0.65 3.9 145.1 3.278 Example 9 0.7 3.9 149.7 3.429 Example 10 0.75 3.9 156.9 3.58 Example 11 0.7 3.7 137.7 3.275 Example 12 0.7 4.2 159.9 3.66 Comparative Example 3 0.8 3.5 127.98 3.417

[0108] It can be seen from the data in Table 2 that Comparative Example 3 achieves a lightweight design by shortening the width of the cable tie, but it is clearly seen from the table that the breaking force of the belt body 20 in Comparative Example 3 is less than the relevant data in Examples 8-12, and the mechanical strength of the cable tie is relatively low; the cable ties in Examples 8-12 have a unit length weight that is close to that of the cable ties in Comparative Example 3, and even in some embodiments, the unit length weight is lower than that of the cable tie in Comparative Example 3, achieving a lightweight design while also having good mechanical strength (the breaking force of the belt body 20 is higher).

[0109] In some embodiments, 3.7 mm ≤ L2 ≤ 3.9 mm.

[0110] The width of the base 22 is moderate, which is beneficial to the lightweight design of the belt body 20 and can ensure that the belt body 20 has good mechanical strength.

[0111] In some embodiments, the size of the belt body 20 in the Y-axis direction is T1, satisfying: 1.35㎜≤T1≤1.45㎜, for example, 1.35㎜, 1.4㎜, 1.45㎜, etc.; the size of the base 22 (belt body 20) in the X-axis direction is L2, satisfying: 3.9㎜≤L2≤4.1㎜, for example, 3.9㎜, 4.0㎜, 4.1㎜, etc.

[0112] It can be seen from Table 2 in the aforementioned embodiment that the greater the values ​​of T1 (T) and L2, the greater the breaking force of the belt body 20, that is, the higher the mechanical strength of the belt body 20, but the correspondingly greater the weight per unit length, which is not conducive to lightweight design; when the distance from the tooth top of at least one lock tongue tooth 121 to the second wall 1112 is less than the distance from the tooth top of the remaining lock tongue teeth 121 to the second wall 1112, the required pulling-off force of the belt body 20 becomes greater, that is, a greater force is required to pull the belt body 20 off the lock tongue teeth 121; the above-mentioned values ​​of T1 and L2 increase the mechanical strength of the belt body 20 and prevent the belt body 20 from being broken before being pulled off. The values ​​of T1 and L2 cannot be increased blindly, as increasing them is not conducive to lightweight design. Therefore, when 1.35㎜≤T1≤1.45㎜, 3.9㎜≤L2≤4.1㎜, it can ensure that the belt body 20 has sufficient mechanical strength to meet the pull-off test, and can also ensure the lightweight design of the belt body 20.

[0113] On the other hand, the present application also relates to a cable tie, comprising any one of the aforementioned locking structures 10; the cable tie also includes a snap-fit ​​portion 70 and / or a belt body 20, and the snap-fit ​​portion 70 and the belt body 20 are both connected to the main body 11.

[0114] By setting the clamping part 70, the locking structure 10 can be installed and used conveniently. The clamping part 70 and the main body 11 can be integrally formed or can be separately formed and assembled together for use, which is not specifically limited here.

[0115] The technical solution provided in the embodiment of the present application is intended to utilize the inconsistent heights of the lock tongue teeth 121. During the process of inserting the belt body 20 from one side of the belt hole 111 to the other side, the belt body 20 only contacts some of the lock tongue teeth 121, not all of the lock tongue teeth 121. The belt body 20 only contacts the lock tongue teeth 121 with higher heights, thereby reducing the friction between the lock tongue teeth 121 and the belt body 20 (belt body teeth 21). That is, the insertion force required for the belt body 20 is smaller, the insertion operation of the belt body 20 is smoother, the workers' assembly feel can be significantly improved, and the smaller belt body 20 insertion force can reduce the labor intensity of the installers, which is conducive to improving the assembly efficiency.

[0116] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terms or descriptions between different embodiments are consistent and can be referenced from each other. The technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more" means two or more.

[0117] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0118] The above is a detailed introduction to the lock structure and cable tie provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A locking structure, characterized in that: The buckle structure is configured to be connected to the belt body, and the buckle structure includes: The main body is provided with a belt hole, wherein the belt hole has a first wall and a second wall oppositely arranged; and a locking tongue connected to the first wall, and configured to lock the belt body; At least two lock tongue teeth are provided on a side of the lock tongue facing the second wall, and the at least two lock tongue teeth are spaced apart along the axial direction of the belt hole; In a first direction, a distance from a tooth top of at least one of the lock tongue teeth to the second wall is smaller than a distance from a tooth top of the remaining lock tongue teeth to the second wall, and the first direction is perpendicular to the second wall; Alternatively, the distance from the tooth top of at least one of the lock tongue teeth to the first wall is greater than the distance from the tooth tops of the remaining lock tongue teeth to the first wall.

2. The locking structure according to claim 1, wherein: In the first direction, the distance from the tooth top of the locking tongue tooth to the second wall is recorded as h, and the distance h gradually increases along the insertion direction of the belt body.

3. The lock structure according to claim 2, characterized in that: In the first direction, the height differences between the tooth tops of adjacent lock tongue teeth are the same.

4. The locking structure according to claim 3, wherein: The height difference between the tooth tops of adjacent lock tongue teeth is recorded as d, and satisfies: 0.08㎜≤d≤0.16㎜.

5. The lock structure according to claim 2, wherein: The tooth tops of the lock tongue teeth are connected to form a connecting surface, and the angle β between the tangent plane of the connecting surface and the second wall or the first wall satisfies: 1°≤β≤15°.

6. The locking structure according to claim 5, wherein: 4°≤β≤9°。 7. The locking structure according to claim 1, wherein: The two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; The locking tongue tooth has an abutting surface on one side close to the first end, and the slope of the abutting surface of each locking tongue tooth gradually decreases along the insertion direction of the belt body.

8. The locking structure according to claim 1, wherein: The root of the lock tongue is provided with a groove.

9. The locking structure according to claim 1, wherein: The two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; A stop-retraction protrusion is provided on one side of the lock tongue close to the first end, and the stop-retraction protrusion is spaced apart from the first wall.

10. The locking structure according to claim 1, wherein: The two ends of the belt hole in the insertion direction of the belt body are a first end and a second end, and the belt body is inserted from the first end toward the second end; A limiting protrusion is provided on one side of the lock tongue near the second end, and the surface of the limiting protrusion facing the second wall is recorded as a pressing surface, and the pressing surface is located between the top of the lock tongue teeth near the second end and the first wall.

11. The lock structure according to claim 1, wherein: A weight-reducing notch is provided on one side of the main body away from the belt body.

12. A cable tie, characterized in that: The cable tie comprises the locking structure according to any one of claims 1 to 11, wherein the cable tie further comprises a belt body connected to the main body.

13. The cable tie according to claim 12, wherein: The belt body is configured to fix the harness, and the belt body comprises: A substrate having a first surface and a second surface opposite to each other; Belt body teeth, arranged in an array on the first surface, and the belt body teeth are configured to connect with the locking structure; Anti-slip ribs are arranged on the second surface and are crimped to the wiring harness; at least two anti-slip ribs are arranged at intervals, and in the three-dimensional coordinate system, the size of the anti-slip ribs in the Y-axis direction is H, satisfying: 0.2㎜≤H≤0.4㎜, the size of the anti-slip ribs in the X-axis direction is W, satisfying: 0.4㎜≤W≤0.8㎜, the Y-axis direction is perpendicular to the first surface, and the X-axis direction is parallel to the spacing direction of the anti-slip ribs.

14. The cable tie according to claim 13, wherein: 0.25㎜≤H≤0.35㎜, 0.5㎜≤W≤0.7㎜.

15. The cable tie according to claim 12, wherein: The belt body is configured to fix the harness, and the belt body comprises: A substrate having a first surface and a second surface opposite to each other; Belt body teeth, arranged in an array on the first surface, and the belt body teeth are configured to connect with the locking structure; Anti-slip ribs are provided on the second surface and are crimped to the wiring harness; at least two anti-slip ribs are provided at intervals, and the distance between two adjacent anti-slip ribs is L1, satisfying: 2.1 mm ≤ L1 ≤ 3.4 mm.

16. The cable tie according to claim 12, wherein: The base of the belt body has a size T in the Y-axis direction, which satisfies the following conditions: 0.65 mm ≤ T ≤ 0.75 mm; The dimension of the base of the belt body in the X-axis direction is L2, which satisfies: 3.7 mm ≤ L2 ≤ 4.2 mm.

17. The cable tie according to claim 16, wherein: 3.7㎜≤L2≤3.9㎜。 18. The cable tie according to any one of claims 12 to 17, wherein: In the Y-axis direction, the size of the belt body is T1, and the distance from the tooth top of the belt body teeth to the second surface is H1, which satisfies: 0.2 mm ≤ T1 - H1 ≤ 0.4 mm.

19. The cable tie according to claim 18, wherein: 1.3㎜≤T1≤1.5㎜。 20. The cable tie according to any one of claims 12 to 17, wherein: The size of the belt body in the Y-axis direction is T1, which satisfies the following conditions: 1.35 mm ≤ T1 ≤ 1.45 mm; The dimension of the base of the belt body in the X-axis direction is L2, which satisfies: 3.9 mm ≤ L2 ≤ 4.1 mm.

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