A strap body and a cable tie

Abstract

This application discloses a cable tie body and a cable tie. The cable tie body is adapted to a locking structure and is configured to fix a wire harness. The cable tie body includes a base, cable teeth, and anti-slip ribs. The base has a first surface and a second surface. The cable teeth are disposed on the first surface and are configured to connect with the locking structure. The anti-slip ribs are disposed on the second surface and are pressed against the wire harness. At least two anti-slip ribs are spaced apart. The dimension of the anti-slip rib in the Y-axis direction is H, which satisfies: 0.2 mm ≤ H ≤ 0.4 mm. The dimension of the anti-slip rib in the X-axis direction is W, which satisfies: 0.4 mm ≤ W ≤ 0.8 mm. The anti-slip ribs are pressed onto the wire harness. The contact area between the anti-slip ribs and the wire harness is small. Under the same force, the anti-slip ribs exert greater pressure on the wire harness. The wire harness and the anti-slip ribs are less likely to undergo relative displacement, and the surface of the wire harness is deformed by the pressure. This further enhances the axial anti-slip capability of the belt body and also improves the mechanical strength of the belt body, which is beneficial to extending the service life of the belt body.

Description

Technical Field

[0001] This application relates to the field of cable tie technology, and more particularly to a cable tie body and a cable tie. Background Technology

[0002] Cable ties, as an important component for securing automotive wiring harnesses, are characterized by their simple structure, good manufacturing uniformity, convenient assembly, and excellent fastening effect. As fasteners, cable ties need to ensure sufficient restraint on the wiring harness to prevent relative movement between the harness and the ties during use. In existing technologies, the restraint force of cable ties on the wiring harness is relatively low, which is detrimental to the stability of the wiring harness after installation. Furthermore, some cable ties reduce the thickness and width of the main body for weight reduction, resulting in a significant decrease in the anti-slip performance of the cable tie. Moreover, as the cross-section of the cable tie decreases, its mechanical strength also decreases.

[0003] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art by providing a belt body and a cable tie.

[0005] According to one aspect of this application, this application provides a belt body adapted to a locking structure, and the belt body is configured to fix a wire harness. The belt body includes a base, belt teeth, and anti-slip ribs. The base has a first surface and a second surface disposed opposite to each other. An array of belt teeth is disposed on the first surface, and the belt teeth are configured to connect with the locking structure. Anti-slip ribs are disposed on the second surface and are pressed against the wire harness. At least two anti-slip ribs are spaced apart. In a three-dimensional coordinate system, the dimension of the anti-slip rib in the Y-axis direction is H, satisfying: 0.2 mm ≤ H ≤ 0.4 mm. The dimension of the anti-slip rib in the X-axis direction is W, satisfying: 0.4 mm ≤ W ≤ 0.8 mm. 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.

[0006] In one embodiment, 0.25 mm ≤ H ≤ 0.35 mm, and 0.5 mm ≤ W ≤ 0.7 mm.

[0007] In one embodiment, the spacing between two adjacent anti-slip ribs is L1, which satisfies: 2.1 mm ≤ L1 ≤ 3.4 mm.

[0008] In one embodiment, the substrate has a dimension T in the Y-axis direction, satisfying: 0.65 mm ≤ T ≤ 0.75 mm; and a dimension L2 in the X-axis direction, satisfying: 3.7 mm ≤ L2 ≤ 4.2 mm.

[0009] In one embodiment, 3.7 mm ≤ L2 ≤ 3.9 mm.

[0010] In one embodiment, in the Y-axis direction, the size of the belt body is T1, and the distance from the tooth tip of the belt body to the second surface is H1, satisfying: 0.2 mm ≤ T1 - H1 ≤ 0.4 mm.

[0011] In one embodiment, the size of the main body of the belt in the Y-axis direction is T1, which satisfies: 1.3 mm ≤ T1 ≤ 1.5 mm.

[0012] According to another aspect of this application, a cable tie is provided, comprising a body body as described above, the cable tie further comprising a locking structure, the body body being connected (integral or detachably connected) to the locking structure.

[0013] In one embodiment, the locking structure includes a main body and a latch. The main body has a strap hole with a first wall and a second wall opposite to each other. The latch is connected to the first wall and is adapted to the strap teeth. The latch has at least two latch teeth on the side facing the second wall, and the at least two latch teeth are spaced apart along the axial direction of the strap hole. In a first direction, the distance from the tip of at least one latch tooth to the second wall is less than the distance from the tip of the other latch teeth to the second wall, and the first direction is perpendicular to the second wall. Alternatively, the distance from the tip of at least one latch tooth to the first wall is greater than the distance from the tip of the other latch teeth to the first wall.

[0014] In one embodiment, the dimension of the main body in the Y-axis direction is T1, which satisfies: 1.35 mm ≤ T1 ≤ 1.45 mm; the dimension of the base in the X-axis direction is L2, which satisfies: 3.9 mm ≤ L2 ≤ 4.1 mm.

[0015] In one embodiment, in the first direction, the distance from the tip of the locking tongue tooth to the second wall is denoted as h, and the distance h gradually increases along the insertion direction of the belt body.

[0016] In one embodiment, in a first direction, the height difference between the tips of adjacent locking tongue teeth is the same.

[0017] In one embodiment, the height difference between the tips of adjacent locking tongue teeth is denoted as d, which satisfies: 0.08 mm ≤ d ≤ 0.16 mm.

[0018] In one embodiment, the tops of each of the locking tongue teeth are connected to form a connecting surface, and the angle between the tangent of the connecting surface and the second wall or the first wall is β, satisfying: 1°≤β≤15°.

[0019] In one embodiment, 4°≤β≤9°.

[0020] In one embodiment, the two ends of the strap hole in the insertion direction of the strap body are a first end and a second end, and the strap body is inserted from the first end toward the second end; the locking tongue tooth has an abutment surface on the side near the first end, and the slope of the abutment surface of each locking tongue tooth gradually decreases along the insertion direction of the strap body.

[0021] In one embodiment, the base of the latch is provided with a groove.

[0022] In one embodiment, the two ends of the strap hole in the insertion direction of the strap body are a first end and a second end, and the strap body is inserted from the first end toward the second end; the locking tongue is provided with a backstop protrusion on the side near the first end, and the backstop protrusion is spaced apart from the first wall.

[0023] In one embodiment, the two ends of the strap hole in the insertion direction of the strap body are a first end and a second end, and the strap body is inserted from the first end toward the second end; a limiting protrusion is provided on the side of the latch near the second end, and the surface of the limiting protrusion facing the second wall is called the pressing surface, which is located between the top of the latch tooth near the second end and the first wall.

[0024] In one embodiment, the main body portion has a weight-reduction notch on the side away from the belt body.

[0025] The beneficial effects of this application are as follows: the anti-slip ribs are pressed onto the wire harness, and the contact area between the anti-slip ribs and the wire harness is small. Under the same force, the pressure of the anti-slip ribs on the wire harness is greater, and the relative displacement between the wire harness and the anti-slip ribs is not easy. Moreover, the surface of the wire harness is deformed by the pressure of the anti-slip ribs pressed onto the wire harness, similar to the anti-slip ribs being embedded on the surface of the wire harness. This can further improve the axial anti-slip capability of the belt body and also improve the mechanical strength of the belt body, which is conducive to improving the service life of the belt body. When 0.2 mm ≤ H ≤ 0.4 mm and 0.4 mm ≤ W ≤ 0.8 mm, it can ensure that the belt body has good axial anti-detachment capability and good mechanical properties, and is also conducive to the lightweight design of the belt body. Attached Figure Description

[0026] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0027] Figure 1 This is a cross-sectional view of a main body provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the connection between the main body of the belt and the wire harness provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of a structure with a body in the prior art.

[0030] Figure 4 This is a schematic diagram of a cable tie provided in an embodiment of this application.

[0031] Figure 5 yes Figure 4 The front view.

[0032] Figure 6 yes Figure 5 Sectional view at point AA.

[0033] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0034] Figure 8 yes Figure 6 Enlarged view of point B in the middle.

[0035] Figure 9 This is a schematic diagram of a locking tongue provided in an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of the engagement of the body teeth and the locking tongue teeth provided in an embodiment of this application.

[0037] In the picture:

[0038] 10. Locking structure; 11. Main body; 111. Strap hole; 1111. First wall; 1112. Second wall; 112. Weight reduction notch; 12. Locking tongue; 121. Locking tongue tooth; 1211. Abutting surface; 1212. Limiting surface; 122. Groove; 123. Anti-reverse protrusion; 124. Limiting protrusion; 1241. Pressing surface;

[0039] 20. Body; 21. Body teeth; 22. Base; 221. First surface; 222. Second surface; 23. Anti-slip ribs;

[0040] 30. Connecting surface;

[0041] 40. First end;

[0042] 50. Second end;

[0043] 60. Cross-section;

[0044] 70. Connecting part;

[0045] 80. Wiring harness;

[0046] 90. Anti-slip pattern. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] The main body of the strap and the cable tie in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] In the existing technology, cable ties have a low constraint force on wire harnesses, which is not conducive to the stability of wire harnesses after installation. In addition, some cable ties reduce the thickness and width of the main body of the cable tie in order to reduce weight, which also significantly reduces the anti-slip performance of the wire harness. Furthermore, as the cross-section of the cable tie decreases, the mechanical strength of the cable tie itself also decreases.

[0051] To address the aforementioned technical problems, this application provides a belt body adapted to a locking structure, configured to fix a wire harness. The belt body includes a base, belt teeth, and anti-slip ribs. The base has a first surface and a second surface opposite to each other. An array of belt teeth is disposed on the first surface and configured to connect with the locking structure. Anti-slip ribs are disposed on the second surface and pressed against the wire harness. At least two anti-slip ribs are spaced apart. In a three-dimensional coordinate system, the dimension of each anti-slip rib in the Y-axis direction is H, satisfying: 0.2 mm ≤ H ≤ 0.4 mm. The dimension of each anti-slip rib in the X-axis direction is W, satisfying: 0.4 mm ≤ W ≤ 0.8 mm. 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. This will be described in detail below.

[0052] See Figures 1-3The main body 20 is adapted to the locking structure 10 and is configured to fix the wire harness 80. The main body 20 includes a base 22, belt teeth 21, and anti-slip ribs 23. The base 22 has a first surface 221 and a second surface 222 that are disposed opposite to each other. The belt teeth 21 are arranged in an array on the first surface 221 and are configured to connect with the locking structure 10. The anti-slip ribs 23 are disposed on the second surface 222 and are pressed against the wire harness 80. At least two anti-slip ribs 23 are spaced apart. In the three-dimensional coordinate system, the dimension of the anti-slip rib 23 in the Y-axis direction is H, which satisfies: 0.2 mm ≤ H ≤ 0.4 mm. The dimension of the anti-slip rib 23 in the X-axis direction is W, which satisfies: 0.4 mm ≤ W ≤ 0.8 mm. 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 ribs 23.

[0053] The anti-slip rib 23 is pressed onto the wire harness 80. The contact area between the anti-slip rib 23 and the wire harness 80 is smaller (compared to the second surface 222 directly contacting the wire harness 80). Under the same force (pressure on the wire harness 80), the pressure of the anti-slip rib 23 on the wire harness 80 is greater. The relative displacement between the wire harness 80 and the anti-slip rib 23 is not easy to occur (along the axial direction of the wire harness 80). Moreover, the surface of the wire harness 80 is deformed by the pressure (by the anti-slip rib 23) when the anti-slip rib 23 is pressed onto the wire harness 80, similar to the anti-slip rib 23 being embedded in the surface of the wire harness 80. This can further improve the axial (axial direction of the wire harness 80) anti-slip capability of the belt body 20.

[0054] It is worth mentioning that multiple anti-slip ribs 23 are spaced apart, which helps to improve the anti-slip ability. However, the number of anti-slip ribs 23 should not be increased indiscriminately. Too many anti-slip ribs 23 are not conducive to the lightweight design of the belt body 20, and will increase the material used in the belt body 20, increasing production and usage costs. Therefore, the number of anti-slip ribs 23 should be comprehensively considered based on the specific dimensions of the belt body 20.

[0055] When fixing the wire harness 80, the belt teeth 21 are connected to the locking structure 10, and the belt body 20 is locked by the locking structure 10. At this time, the belt body 20 surrounds the wire harness 80, and the anti-slip ribs 23 are pressed onto the wire harness 80. By setting the anti-slip ribs 23, the fastening effect of the belt body 20 on the wire harness 80 can be improved, that is, the wire harness 80 is not easy to slide along the axial direction of the wire harness 80.

[0056] When the value of H is less than 0.2 mm, the dimension 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 with the anti-slip rib 23 tends to be planar, which results in poor fixing effect on the wire harness 80. Under the action of external force, the wire harness 80 is more likely to be displaced along the axial direction (the axial direction of the wire harness 80). When the value of H is greater than 0.4 mm, the thickness of the anti-slip rib 23 is large, and more material is needed to make the main body 20, which increases the production cost.

[0057] When W is less than 0.4 mm, the dimension 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 pressed 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 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. This is not conducive to improving the axial anti-detachment performance of the belt body 20 (although the contact area increases, the pressure of the anti-slip rib 23 on the wire harness 80 decreases). In addition, the larger width of the anti-slip rib 23 requires more manufacturing materials, which is not conducive to the lightweight design of the belt body 20 and increases the production cost.

[0058] It should be noted that H = T1 - H1, where T1 is the dimension of the belt body 20 in the Y-axis direction, and H1 is the distance (in the Y-axis direction) from the tooth tip of the belt tooth 21 to the second surface 222. In actual measurement, the values ​​of T1 and H1 are relatively easy to obtain. For example, the value of H1 can be measured using tools such as a double-pointed micrometer or a small-pointed micrometer; no specific limitation is made 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. Furthermore, the anti-slip ribs 23 can also improve the mechanical strength of the belt body 20, which is beneficial to extending the service life of the belt body 20.

[0059] In some embodiments, the anti-slip rib 23 has a dimension of H in the Y-axis direction, such as 0.2 mm, 0.3 mm, 0.4 mm, etc.; and a dimension of W in the X-axis direction, such as 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc. In this way, the above parameter settings can ensure that the belt body 20 has good axial anti-slip capability and is conducive to the lightweight design of the belt body 20.

[0060] The performance of the technical solutions provided in the embodiments of this application will be evaluated below with reference to specific examples.

[0061] 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 is applied to the wire harness 80 after the main body 20 is fixed. When the wire harness 80 undergoes axial displacement, the tensile force value is recorded. Multiple sets of data can be tested and the average value calculated. Furthermore, the axial anti-slip force (PVC) is the anti-slip force when electrical tape is wrapped around the wire harness 80 and the anti-slip ribs 23 are pressed against the electrical tape. In addition, the cable tie in Comparative Example 1 does not have 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 main body 20 (base 22), and T represents the thickness (dimension in the Y-axis direction) of the base 22.

[0062] Table 1

[0063]

[0064] As can be seen from the data in Table 1, the main body 20 (base 22) of the cable tie with anti-slip ribs 23 has better axial anti-slip capability. The anti-slip force is much greater than that of the cable tie without anti-slip ribs 23 in Comparative Example 1, and also much greater than that of the cable tie with anti-slip pattern 90. In the cable tie of Comparative Example 1, even though the base 22 has a larger width and thickness (compared to Examples 1-7), the axial anti-slip force is still low without the anti-slip ribs 23, and the constraint effect on the wire harness 80 is average. In the cable tie of Comparative Example 2, although it has a smaller width, which achieves a certain degree of cable tie weight reduction, the width of the main body 20 (base 22) is reduced, and the contact area between the cable tie and the wire harness 80 is reduced. Even with the anti-slip pattern 90, the axial anti-slip force is still low, and the constraint effect on the wire harness 80 is average.

[0065] In some embodiments, 0.25 mm ≤ H ≤ 0.35 mm, 0.5 mm ≤ W ≤ 0.7 mm.

[0066] The thickness and width of the anti-slip ribs 23 are moderate, which can ensure that the main body 20 of the belt has good axial anti-slip ability and also facilitate the lightweight design of the main body 20 of the belt.

[0067] In some embodiments, the spacing between two adjacent anti-slip ribs 23 is L1, which satisfies: 2.1 mm ≤ L1 ≤ 3.4 mm, such as 2.1 mm, 2.5 mm, 3.1 mm, 3.4 mm, etc.

[0068] When the value of L1 is less than 2.1 mm, the spacing between the two anti-slip ribs 23 is too small, increasing the manufacturing difficulty of the anti-slip ribs 23; when the value of L1 is greater than 3.4 mm, the spacing between the two anti-slip ribs 23 is too large. When fixing the wire harness 80, the two anti-slip ribs 23 restrict the wire harness 80 separately, and the restriction ability is poor (compared to the combined action of the two anti-slip ribs 23). The wire harness 80 is prone to axial displacement, which is not conducive to improving the anti-slip performance of the belt body 20. In addition, the larger the value of L1, the larger the required width of the base 22 (the dimension of the base 22 in the X-axis direction) is, which is not conducive to the lightweight design of the belt body 20.

[0069] In some embodiments, the substrate 22 has a dimension T in the Y-axis direction, satisfying: 0.65 mm ≤ T ≤ 0.75 mm; the substrate 22 has a dimension L2 in the X-axis direction, satisfying: 3.7 mm ≤ L2 ≤ 4.2 mm.

[0070] When the value of T is less than 0.65 mm, the dimension of the substrate 22 in the Y-axis direction (i.e., the thickness of the substrate 22, the same below) is small, and the mechanical strength of the belt body 20 is generally 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.

[0071] When the value of L2 is less than 3.7 mm, the dimension 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 generally low. 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.

[0072] In summary, when the substrate 22 is within the above-mentioned size range, it can achieve good weight reduction while maintaining sufficient mechanical strength, which is beneficial to improving service life.

[0073] In some embodiments, the dimension of the substrate 22 in the Y-axis direction is T, for example, 0.65 mm, 0.7 mm, 0.75 mm, etc.; the dimension of the substrate 22 in the X-axis direction is L2, for example, 3.7 mm, 3.9 mm, 4.2 mm, etc. In this way, the above parameter settings can ensure that the belt body 20 has sufficient mechanical strength and are conducive to the lightweight design of the belt body 20.

[0074] The performance of the technical solutions provided in the embodiments of this application will be evaluated below with reference to specific implementations.

[0075] Examples 8-12 and Comparative Example 3 are provided. Specific parameters and test results are detailed in Table 2. The tensile force of the main body 20 can be measured by a pull-out tester. The force when the main body 20 is pulled apart by the pull-out tester is the tensile force of the main body 20. The average value can be obtained after testing multiple sets of data. In addition, the weight per unit length represents the weight of the base 22 along its extension direction of one unit length. During measurement, a unit length of material of the base 22 (main body 20) in the extension direction is cut off, and the weight of one unit length of material is weighed.

[0076] Table 2

[0077] project T / ㎜ L2 / ㎜ Main body tensile strength / N Weight per unit length / mm 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

[0078] As can be seen from the data in Table 2, Comparative Example 3 achieves lightweight design by shortening the width of the cable tie. However, it is clear from the table that the tensile strength of the main body 20 in Comparative Example 3 is less than the relevant data in Examples 8-12, indicating that the mechanical strength of the cable tie is relatively low. The cable ties in Examples 8-12 have a weight per unit length that is close to that of the cable tie in Comparative Example 3, and in some examples, the weight per unit length is even lower than that of the cable tie in Comparative Example 3. While achieving lightweight design, they also have good mechanical strength (high tensile strength of the main body 20).

[0079] In some embodiments, 3.7 mm ≤ L2 ≤ 3.9 mm.

[0080] The base 22 has a moderate width, which is conducive to the lightweight design of the belt body 20 and ensures that the belt body 20 has good mechanical strength.

[0081] See Figures 4-7 The locking structure 10 is configured to connect with the belt body 20. The locking structure 10 includes a main body 11 and a locking tongue 12. The main body 11 is provided with a belt hole 111, which has a first wall 1111 and a second wall 1112 disposed opposite to each other. The locking tongue 12 is connected to the first wall 1111 and is configured to lock the belt body 20. The locking tongue 12 is provided with at least two locking tongue teeth 121 on the side facing the second wall 1112. The at least two locking tongue teeth 121 are spaced apart along the axial direction of the belt hole 111. In a first direction, the distance from the tooth tip of at least one locking tongue tooth 121 to the second wall 1112 is less than the distance from the tooth tip of the other locking tongue teeth 121 to the second wall 1112. The first direction is perpendicular to the second wall 1112.

[0082] In this embodiment, the existence of the locking tongue tooth 121 is defined based on the second wall 1112. Figure 7The height difference in the field of view; of course, it can also be based on the first wall 1111 for relevant limitations, for example, the distance from the tip of at least one locking tongue tooth 121 to the first wall 1111 is greater than the distance from the tip of the other locking tongue teeth 121 to the first wall 1111; similarly, in the following embodiments, the relevant description of the locking tongue tooth 121 can be based on either the second wall 1112 or the first wall 1111, which will not be repeated here.

[0083] It is worth mentioning that, see Figure 6 The second wall 1112 is disposed between the first wall 1111 and the main 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 be disposed on... Figure 5 From the perspective of the hole 111, either of the two inner walls on the left or right side falls within the protection scope of this application.

[0084] The distance from the tip of at least one locking tongue tooth 121 to the second wall 1112 is less than the distance from the tip of the remaining locking tongue teeth 121 to the second wall 1112, that is, in Figure 7 From the perspective of the device, the heights of the locking tongue teeth 121 are inconsistent. During the process of inserting the belt body 20 from one side of the thread hole 111 to the other, the belt body 20 only contacts some of the locking tongue teeth 121, not all of them. The belt body 20 only contacts the locking tongue teeth 121 with higher height (the higher the locking tongue teeth 121, the closer the tooth tip of the locking tongue teeth 121 is to the second wall 1112, the same below). This reduces the friction between the locking 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 thread hole 111) is smaller. The insertion operation of the belt body 20 is smoother, and the assembly feel of the workers can be significantly improved. The smaller insertion force of the belt body 20 can reduce the labor intensity of the installers and is conducive to improving assembly efficiency.

[0085] When the main body 20 is subjected to an object in the insertion direction (e.g.) Figure 6-10When a force is applied in the opposite direction to the direction of insertion (as shown in U, the same below), the locking tongue 12 can prevent the main body 20 of the belt from exiting the threading hole 111. Specifically, the locking tongue teeth 121 mesh with the belt body teeth 21, thereby preventing the main body 20 of the belt from exiting the threading hole 111. When the main body 20 of the belt tends to exit the threading hole 111 (i.e., it is subjected to a force in the opposite direction to the insertion direction), the belt body teeth 21 can drive the locking tongue 12 to deform (i.e., the locking tongue 12 rotates around the root of the locking tongue 12). During the deformation of the locking tongue 12... During the process, the lower locking tongue tooth 121 rises (moves toward the second wall 1112) and abuts against the belt body tooth 21 (the higher locking tongue tooth 121 also abuts against the belt body tooth 21), increasing the pull-out force of the belt body 20 (the force required to pull the belt body 20 out of the locking tongue 12 restriction; the greater the pull-out force required for the belt body 20, the more reliable the connection between the belt body 20 and the locking tongue 12), meaning the belt body 20 is less likely to come out of the belt hole 111, thus improving customer satisfaction.

[0086] It should be noted that the first direction is as follows: Figure 5-10 As shown in the center direction V, the axial direction of the through hole 111 is Figure 7 The left and right directions are shown in the perspective. Furthermore, in the current embodiment drawings, the extension direction of the second wall 1112 is aligned with the U direction. Of course, when the second wall 1112 is tilted or bent (not completely aligned with the U direction), as long as the design concept is consistent with this application, it is also within the protection scope of this application.

[0087] It is worth mentioning that the main body 20 and the main body 11 can be integrally formed or they can be formed separately and then assembled, depending on the actual use.

[0088] In some embodiments, the dimension of the main body 20 in the Y-axis direction is T1, which satisfies: 1.35 mm ≤ T1 ≤ 1.45 mm, such as 1.35 mm, 1.4 mm, 1.45 mm, etc.; the dimension of the base 22 (main body 20) in the X-axis direction is L2, which satisfies: 3.9 mm ≤ L2 ≤ 4.1 mm, such as 3.9 mm, 4.0 mm, 4.1 mm, etc.

[0089] As shown in Table 2 of the aforementioned embodiments, the larger the values ​​of T1 (T) and L2, the greater the tensile force of the belt body 20, that is, the higher the mechanical strength of the belt body 20. However, the corresponding weight per unit length is also greater, which is not conducive to lightweight design. When the distance from the tip of at least one locking tongue tooth 121 to the second wall 1112 is less than the distance from the tip of the other locking tongue teeth 121 to the second wall 1112, the pull-out force required for the belt body 20 increases, that is, a greater force is needed to pull the belt body 20 out of the locking tongue teeth 121. The values ​​of T1 and L2 mentioned above increase the mechanical strength of the belt body 20 and prevent the belt body 20 from breaking before being pulled out. However, the values ​​of T1 and L2 should not be increased indiscriminately, as this is not conducive to lightweight design. Therefore, when 1.35 mm ≤ T1 ≤ 1.45 mm and 3.9 mm ≤ L2 ≤ 4.1 mm, it can ensure that the main body 20 has sufficient mechanical strength to meet the pull-out test, and also ensure the lightweight design of the main body 20.

[0090] See Figure 8 In the first direction, the distance from the tip of the locking tongue 121 to the second wall 1112 is denoted as h, and the distance h gradually increases along the insertion direction of the belt body 20.

[0091] For ease of explanation, the smaller the value of h, the higher the height of the corresponding locking tongue tooth 121.

[0092] In this embodiment, the distance h gradually increases along the insertion direction of the belt body 20, that is, the height of the locking tongue 121 gradually decreases in the insertion direction; Figure 8 Taking the perspective as an example, the insertion direction of the belt body 20 is from right to left, and the locking tongue teeth 121 are arranged with the left side lower and the right side higher. When the belt body 20 is inserted, the belt body 20 only abuts against the rightmost locking tongue tooth 121. The insertion force required for the belt body 20 is smaller, the insertion operation is smoother, the worker's assembly feel can be significantly improved, the labor intensity of the installer is reduced, and the assembly efficiency is improved.

[0093] When the main body 20 of the belt is subjected to a force opposite to the insertion direction, the belt teeth 21 drive the highest locking tongue teeth 121, which in turn drives the locking tongue 12 to rotate to the right around its root. During the rotation of the locking tongue 12, the lower locking tongue teeth 121 on the left side are gradually raised until they abut against the belt teeth 21 to restrict the main body 20 of the belt. Due to the gradual change in the height of the locking tongue teeth 121, the locking tongue teeth 121 can rise sequentially during the rotation of the locking tongue 12, ultimately ensuring that all locking tongue teeth 121 abut against the belt teeth 21, thereby increasing the pull-out force of the main body 20 of the belt. The main body 20 of the belt is less likely to come out of the thread hole 111, thus improving customer satisfaction.

[0094] It should be noted that in some embodiments, the height of each locking tongue tooth 121 in the insertion direction of the main body 20 may not be gradually changed. It may be that one locking tongue tooth 121 is lower in height and the locking tongue teeth 121 on both sides are higher in height, etc., taking into account factors such as the specific structure of the locking tongue 12 and the design requirements of the pull-out force.

[0095] In some embodiments, in the first direction, the height difference between the tips of adjacent locking tongue teeth 121 is the same, denoted as d, and satisfies: 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.

[0096] In this embodiment, the height difference between adjacent locking tongue teeth 121 is the same. When the belt body 20 is subjected to a force opposite to the insertion direction (for ease of explanation, this force is referred to as the reaction force, the same below), each locking tongue tooth 121 becomes highly consistent with the rotation of the locking tongue 12. The contact area between each locking tongue tooth 121 and the belt body tooth 21 is equal, that is, the interaction force between each locking tongue tooth 121 and the belt body tooth 21 is the same. Each locking tongue tooth 121 (and the belt body tooth 21) is subjected to uniform force, and there will be no situation where the force on a certain locking tongue tooth 121 is too concentrated and causes damage. The belt body 20 is not easy to be withdrawn from the belt hole 111, which improves the service life and economy.

[0097] When the value of d is less than 0.08 mm, the height difference between each locking tongue tooth 121 is small, that is, the height of each locking tongue tooth 121 tends to be equal, and the insertion force required for the belt body 20 increases, which is not conducive to the insertion operation of the belt body 20. When the value of d is greater than 0.16 mm, the height difference between each locking tongue tooth 121 is large. When the belt body 20 is subjected to a reaction force, the locking tongue 12 needs to rotate a large range to raise the lower locking tongue tooth 121 to abut against the belt body tooth 21. If the rotation range of the locking tongue 12 is too large, it is prone to fatigue damage, which is not conducive to improving the service life of the locking structure 10.

[0098] In some embodiments, the tops of each locking tongue tooth 121 are connected to form a connecting surface 30, and the angle between the tangent 60 of the connecting surface 30 and the second wall 1112 or the first wall 1111 is β, which satisfies: 1°≤β≤15°, for example 1°, 4°, 5°, 7°, 9°, 11°, 15°, etc.

[0099] The connecting surface 30 formed by the tooth tips of each locking tongue tooth 121 can be a plane (e.g., Figure 8 As shown), it can also be a curved surface (such as...). Figure 9 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 that is tangent to the connecting surface 30.

[0100] When the value of β is less than 1°, the 60° section tends to be horizontal. Figure 8 From a certain perspective, the height difference between each locking tongue tooth 121 is small, that is, the height of each locking tongue tooth 121 tends to be equal, which increases the insertion force required for the belt body 20, which is not conducive to the insertion operation of the belt body 20. When the value of β is greater than 15°, the height difference between each locking tongue tooth 121 is large. When the belt body 20 is subjected to a reaction force, the locking tongue 12 needs to rotate a large range to raise the lower locking tongue tooth 121 to abut against the belt body tooth 21. If the rotation range of the locking tongue 12 is too large, it is easy to fatigue damage, which is not conducive to improving the service life of the locking structure 10.

[0101] In some embodiments, 4°≤β≤9°, such as 4°, 5°, 7°, 9°, etc., the height difference between each locking tongue tooth 121 is moderate, which can reduce the insertion force required for the belt body 20 and avoid excessive rotation range of the locking tongue 12 which can easily cause fatigue damage.

[0102] See Figure 7 and Figure 10 In some embodiments, the two ends of the strap hole 111 in the insertion direction of the strap body 20 are a first end 40 and a second end 50, and the strap body 20 is inserted from the first end 40 toward the second end 50; the locking tongue tooth 121 has an abutment surface 1211 on the side near the first end 40, and the slope of the abutment surface 1211 of each locking tongue tooth 121 gradually decreases along the insertion direction of the strap body 20.

[0103] The smaller the slope of the contact surface 1211, the smoother the contact surface 1211. In this embodiment, Figure 10 From the perspective of the belt body 20, the insertion direction is from right to left. The slope of the contact surface 1211 of the locking tongue tooth 121 decreases from right to left. When the belt body 20 is subjected to a reaction force, the locking tongue 12 rotates around its root. During the rotation, the slope of the contact surface 1211 of the left locking tongue tooth 121 increases. Each contact surface 1211 from right to left abuts against different belt teeth 21 in turn, increasing the contact area and improving the pull-out force of the belt body 20. The belt body 20 is not easy to exit from the belt hole 111, thus improving customer satisfaction.

[0104] For ease of understanding, Figure 10For example, in this embodiment, three locking tongue teeth 121 are arranged sequentially from right to left. Each locking tongue tooth 121 also has a limiting surface 1212 on the side near the second end 50. When the belt body 20 is subjected to a reverse force, the belt body tooth 21 abuts against the limiting surface 1212 of the rightmost locking tongue tooth 121 and drives the locking tongue 12 to rotate. During the rotation, since the slope of the abutting surface 1211 of the leftmost locking tongue tooth 121 is smaller than the slope of the abutting surface 1211 of the middle locking tongue tooth 121, the abutting surface 1211 of the middle locking tongue tooth 121 abuts against the belt body tooth 21 first, and continues to apply a reaction force until the abutting surface 1211 of the leftmost locking tongue tooth 121 abuts against the belt body tooth 21, thereby increasing the pull-out force of the belt body 20 and making it difficult for the belt body 20 to exit from the belt hole 111. When the slope of the contact surface 1211 of the leftmost locking tongue tooth 121 is greater than that of the contact surface 1211 of the middle locking tongue tooth 121, during the rotation of the locking tongue 12, the contact surface 1211 of the leftmost locking tongue tooth 121 will contact the belt body tooth 21 before the contact surface 1211 of the middle locking tongue tooth 121, so that the contact surface 1211 in the middle position cannot contact the belt body tooth 21, thereby reducing the pull-out force of the belt body 20.

[0105] In some embodiments, the root of the latch 12 is provided with a groove 122 to form an anti-retraction protrusion 123 on the side of the groove 122 away from the first wall 1111.

[0106] By setting the groove 122, the thickness of the root of the latch 12 can be reduced, improving the flexibility of the latch 12. When the belt body 20 is inserted, the higher latch teeth 121 restrict the belt body 20 less, making it easier for the belt body 20 to be inserted into the belt hole 111. At the same time, a backstop protrusion 123 is formed on the side of the groove 122 away from the first wall 1111. When the latch 12 rotates and deforms, the backstop protrusion 123 can abut against the first wall 1111, preventing the latch 12 from excessively deforming and affecting its elasticity, which is beneficial to improving the service life of the latch structure 10.

[0107] In some embodiments, a projection plane η perpendicular to the first direction is set, and the orthographic projection of the locking tongue 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 locking tongue 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 locking tongue 121 can press the belt body 20 against the second wall 1112, which is beneficial to the stability of the connection between the belt body 20 and the buckle structure 10. In addition, the orthographic projection of the anti-reverse 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, the end of the belt body 20 needs to be aligned with the belt hole 111. With the setting of the anti-reverse protrusion 123, the anti-reverse 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.

[0108] In some embodiments, the two ends of the strap hole 111 in the insertion direction of the strap body 20 are a first end 40 and a second end 50, and the strap body 20 is inserted from the first end 40 toward the second end 50; the locking tongue 12 is provided with a limiting protrusion 124 on the side near the second end 50, and the surface of the limiting protrusion 124 facing the second wall 1112 is called the pressing surface 1241, and the pressing surface 1241 is located between the top of the locking tongue tooth 121 near the second end 50 and the first wall 1111.

[0109] When the belt body 20 is subjected to a reverse force, the pressing surface 1241 can abut against the tooth tip of the belt body tooth 21 as the locking tongue 12 rotates, thereby increasing the pull-out force of the belt body 20. The pressing surface 1241 is located between the tooth tip of the locking tongue tooth 121 (near the second end 50) and the first wall 1111, that is, the pressing surface 1241 is lower than the tooth tip of the locking tongue tooth 121 (near the second end 50), which can ensure that after the locking tongue tooth 121 abuts against the belt body tooth 21, the pressing surface 1241 abuts against the tooth tip of the belt body tooth 21. When the pressing surface 1241 is higher than the tooth tip of the locking tongue tooth 121, the pressing surface 1241 will abut against the belt body tooth 21 before the locking tongue tooth 121, which is not conducive to increasing the pull-out force of the belt body 20.

[0110] In some embodiments, the main body 11 has a weight reduction notch 112 on the side away from the main body 20.

[0111] The weight reduction notch 112 can save some materials, reduce product weight, and thus reduce production costs. The specific location of the weight reduction notch 112 is not limited; it can be... Figure 6 The weight reduction notch 112 can be set on the left, right, or both sides of the viewpoint, or not limited to this.

[0112] On the other hand, this application also relates to a cable tie, including any of the aforementioned main body 20, the cable tie also includes a locking structure 10 and a snap-fit ​​portion 70, the snap-fit ​​portion 70 and the main body 20 are both connected to the locking structure 10.

[0113] The snap-fit ​​part 70 enables the installation of the locking structure 10, making it convenient to use. The snap-fit ​​part 70 and the main body part 11 can be integrally formed or separately formed and then assembled together. No specific limitation is made here.

[0114] Using the technical solution provided in this application embodiment, the anti-slip rib 23 is pressed onto the wire harness 80. The contact area between the anti-slip rib 23 and the wire harness 80 is small. Under the same force, the pressure of the anti-slip rib 23 on the wire harness 80 is greater. It is not easy for relative displacement to occur between the wire harness 80 and the anti-slip rib 23. Moreover, when the anti-slip rib 23 is pressed onto the wire harness 80, the surface of the wire harness 80 is deformed by the pressure, similar to the anti-slip rib 23 being embedded on the surface of the wire harness 80. This can further improve the axial anti-slip capability of the belt body 20 and also improve the mechanical strength of the belt body 20, which is beneficial to the improvement of the service life of the belt body 20. When 0.2 mm ≤ H ≤ 0.4 mm and 0.4 mm ≤ W ≤ 0.8 mm, it can ensure that the belt body 20 has good axial anti-detachment capability and good mechanical properties, and is also conducive to the lightweight design of the belt body 20.

[0115] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. 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 than one" means two or more.

[0116] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0117] The foregoing has provided a detailed description of the strap body and cable ties provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A body-mounted main body, characterized in that, Adapted to a locking structure, and the main body of the belt is configured to fix the wire harness, the main body of the belt includes: The substrate has a first surface and a second surface that are arranged opposite to each other; The belt has teeth arranged in an array on the first surface, and the teeth are configured to connect with the locking structure. Anti-slip ribs are disposed on the second surface and are crimped onto the wire harness. At least two anti-slip ribs are spaced apart. In a three-dimensional coordinate system, the dimension of the anti-slip rib in the Y-axis direction is H, satisfying: 0.2 mm ≤ H ≤ 0.4 mm. The dimension of the anti-slip rib in the X-axis direction is W, satisfying: 0.4 mm ≤ W ≤ 0.8 mm. 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.

2. The main body as described in claim 1, characterized in that, 0.25 mm ≤ H ≤ 0.35 mm, 0.5 mm ≤ W ≤ 0.7 mm.

3. The main body of the belt as described in claim 1, characterized in that, The spacing between two adjacent anti-slip ribs is L1, which satisfies: 2.1 mm ≤ L1 ≤ 3.4 mm.

4. The main body of the belt as described in claim 1, characterized in that, The matrix has a dimension T in the Y-axis direction, satisfying: 0.65 mm ≤ T ≤ 0.75 mm; The dimension of the substrate in the X-axis direction is L2, which satisfies: 3.7 mm ≤ L2 ≤ 4.2 mm.

5. The main body as described in claim 4, characterized in that, 3.7㎜≤L2≤3.9㎜。 6. The main body as described in claim 1, characterized in that, In the Y-axis direction, the size of the main body of the belt is T1, and the distance from the tooth tip of the belt to the second surface is H1, satisfying: 0.2 mm ≤ T1 - H1 ≤ 0.4 mm.

7. The main body of the belt as described in any one of claims 1-6, characterized in that, In the Y-axis direction, the size of the main body of the belt is T1, which satisfies: 1.3 mm ≤ T1 ≤ 1.5 mm.

8. A cable tie, characterized in that, The cable tie includes the main body as described in any one of claims 1 to 7, and the cable tie further includes a locking structure to which the main body is connected.

9. The cable tie as described in claim 8, characterized in that, The locking structure includes a main body and a locking tongue. The main body is provided with a strap hole. The strap hole has a first wall and a second wall that are disposed opposite to each other. The locking tongue is connected to the first wall and is adapted to the strap teeth. The latch is provided with at least two latch teeth on the side facing the second wall, and the at least two latch teeth are spaced apart along the axial direction of the through hole; In a first direction, the distance from the tip of at least one of the locking tongue teeth to the second wall is less than the distance from the tip 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 tip of at least one of the locking tongue teeth to the first wall is greater than the distance from the tip of the other locking tongue teeth to the first wall.

10. The cable tie as described in claim 9, characterized in that, The dimension of the main body of the belt in the Y-axis direction is T1, which satisfies: 1.35 mm ≤ T1 ≤ 1.45 mm; The dimension of the substrate in the X-axis direction is L2, which satisfies: 3.9 mm ≤ L2 ≤ 4.1 mm.

11. The cable tie as described in claim 9, characterized in that, In the first direction, the distance from the tip of the locking tongue tooth to the second wall is denoted as h, and the distance h gradually increases along the insertion direction of the belt body.

12. The cable tie as described in claim 9, characterized in that, In the first direction, the height difference between the tips of adjacent locking tongue teeth is the same.

13. The cable tie as described in claim 9, characterized in that, The height difference between the tips of adjacent locking tongue teeth is denoted as d, which satisfies: 0.08 mm ≤ d ≤ 0.16 mm.

14. The cable tie as described in claim 9, characterized in that, The tops of each of the locking tongue teeth are connected to form a connecting surface, and the angle between the tangent of the connecting surface and the second wall or the first wall is β, satisfying: 1°≤β≤15°.

15. The cable tie as described in claim 14, characterized in that, 4°≤β≤9°。 16. The cable tie as described in claim 9, characterized in that, The two ends of the strap hole in the insertion direction of the main body of the strap are the first end and the second end, and the main body of the strap is inserted from the first end toward the second end; The locking tongue tooth has an abutment surface on the side near the first end, and the slope of the abutment surface of each locking tongue tooth gradually decreases along the insertion direction of the belt body.

17. The cable tie as described in claim 9, characterized in that, The base of the latch is provided with a groove.

18. The cable tie as described in claim 9, characterized in that, The two ends of the strap hole in the insertion direction of the main body of the strap are the first end and the second end, and the main body of the strap is inserted from the first end toward the second end; The latch is provided with a backstop protrusion on the side near the first end, and the backstop protrusion is spaced apart from the first wall.

19. The cable tie as described in claim 9, characterized in that, The two ends of the strap hole in the insertion direction of the main body of the strap are the first end and the second end, and the main body of the strap is inserted from the first end toward the second end; The latch is provided with a limiting protrusion on the side near the second end. The surface of the limiting protrusion facing the second wall is called the pressing surface. The pressing surface is located between the top of the latch tooth near the second end and the first wall.

20. The cable tie as described in claim 9, characterized in that, The main body has a weight-reduction notch on the side away from the belt body.

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