Wire harness fixing device for high temperature surface and its application

Abstract

The present invention provides a wire harness fixing device for a high-temperature surface and its application, which has a simple structure, low cost, convenient operation and disassembly, and can effectively reduce the deformation of the structure to ensure the fixing of the wire harness; the device comprises a clamping ring and a pillar, the clamping ring comprises a ring portion for inserting the wire harness to be fixed, roots are arranged at both ends of the opening of the ring portion to form the opening part of the clamping ring, the pillar is connected to the high-temperature surface, an inner plug hole is arranged at the top of the pillar, and a clamping ring limiting hole communicating with the inner plug hole is arranged on the pillar in an annular direction; the bending direction of the root is opposite to the bending direction of the ring portion so that the clamping ring can be elastically deformed, the bottom ends of the roots at both ends are provided with hooks protruding outwards, the spacing between the hooks is greater than the inner diameter of the inner plug hole, the root is extended into the inner plug hole by the action of an external force, and the hook is inserted into the clamping ring limiting hole by the elastic force of the clamping ring.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle post-processing, in particular to equipment for arranging a wiring harness on a high-temperature surface, in particular to a wiring harness fixing device for the high-temperature surface and application thereof. Background Art

[0002] The key to arranging the wiring harness on a high-temperature surface is to ensure that the wiring harness is not too close to or even in contact with the high-temperature surface, so as to avoid heat damage to the wiring harness. At present, vehicle exhaust after-processors are becoming more and more complex, including more and more wiring harnesses for various sensors and actuators. In order to ensure the safety, reliability and durability of the wiring harness, a reasonable wiring harness fixing method must be considered. Known wiring harness fixing methods, such as first fixing the wiring harness with a ring, and then tightening the ring with bolts, but this fixing method is not only troublesome to disassemble, but also requires tapping the structure, which is cumbersome to operate and complex in structure. In addition, due to the bolt fixation, the contact area between the ring and the bolt is large, and the heat transferred from the high-temperature surface to the ring is large, which will cause deformation of the structure and affect the fixation of the wiring harness. Summary of the invention

[0003] In view of the above problems, the present invention provides a wiring harness fixing device for high-temperature surfaces and its application, which has a simple structure, low cost, convenient operation and disassembly, and can effectively reduce structural deformation to ensure the fixing of the wiring harness.

[0004] The technical solution is as follows: a wire harness fixing device for a high-temperature surface comprises a clamping ring and a pillar, wherein the clamping ring comprises a ring portion for inserting the wire harness to be fixed, roots are provided at both ends of the opening of the ring portion to form the opening portion of the clamping ring, and the pillar is connected to the high-temperature surface, characterized in that an inner plug hole is provided at the top of the pillar, and a clamping ring limiting hole communicating with the inner plug hole is provided circumferentially on the pillar; the bending direction of the root is opposite to the bending direction of the ring portion so that the clamping ring can be elastically deformed, and hooks protruding outward are provided at the bottom ends of the roots at both ends, and the spacing between the hooks is greater than the inner diameter of the inner plug hole, the root is extended into the inner plug hole by the action of external force, and the hook is inserted into the clamping ring limiting hole by the elastic force of the clamping ring.

[0005] Further, the support is welded to the high-temperature surface;

[0006] Furthermore, the bottom of the pillar is connected with a bolt, and the pillar is threadedly connected to the high-temperature surface through the bolt;

[0007] Furthermore, the clamp ring limiting holes are provided with at least two, and are axially symmetrically opened on the circumference of the pillar;

[0008] Furthermore, the distance between the clamping ring limiting hole and the top section of the pillar is 1 to 6 times the diameter of the inner plug hole;

[0009] Furthermore, the material of the clamping ring is a stainless steel profile; the cross section of the ring portion is an arc shape larger than a semicircle;

[0010] Furthermore, there are at least two ring parts, and the open ends on the same side of the ring parts are connected to each other and share one root part;

[0011] Furthermore, there are at least two clamping rings, and the roots of the clamping rings are arranged closely to each other;

[0012] Furthermore, two clamping rings are provided, and the two clamping rings are integrally formed by bending a profile to form two ring parts, and the roots of the two ring parts correspond to each other and are tightly connected;

[0013] Furthermore, the inner plug hole can accommodate at least two tightly connected roots;

[0014] Furthermore, there is a spacing between adjacent ring portions;

[0015] Furthermore, the roots of at least two of the clamping rings are extended into the inner insertion hole by external force, and the hooks of the clamping rings on the same side are inserted into the same clamping ring limiting hole;

[0016] The invention discloses an application of a wiring harness fixing device on a high-temperature surface, characterized in that the device is applied to an engine exhaust aftertreatment catalyst.

[0017] The beneficial effects of the present invention are that it has a simple structure, low cost and easy operation. Through the action of external force, the lower part of the clamp is retracted inwardly and the root is extended into the inner plug hole. Then, the elastic external expansion force of the clamp itself is utilized so that the hook can be automatically inserted into the limiting hole of the clamp. At the same time, the wiring harness is inserted into the ring part of the clamp, thereby fixing the wiring harness and facilitating disassembly. The contact area between the clamp and the pillar is small. Compared with the existing bolt connection, the heat transferred from the high-temperature surface to the clamp is reduced, which can effectively reduce the deformation of the structure and has good economic use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the first embodiment of the present invention after assembly;

[0019] Figure 2 is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of a clamping ring in Embodiment 1 of the present invention;

[0021] Figure 4is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of a clamping ring in Embodiment 2 of the present invention;

[0023] Figure 6 is a side view structural diagram of Embodiment 3 of the present invention;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure of the third embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the assembly structure in the third embodiment of the present invention (welding connection method);

[0026] Fig. 9 This is a schematic diagram of the assembly structure in the third embodiment of the present invention (threaded connection mode);

[0027] Fig.10 is a schematic diagram of the connection structure of two clasps in Embodiment 3 of the present invention;

[0028] Fig.11 is a schematic diagram of the three-dimensional structure of the fourth embodiment of the present invention;

[0029] Fig.12 It is a schematic diagram of the connection structure of two clamping rings in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, the wire harness fixing device for high temperature surface of the present invention comprises a clamp ring 1 and a support 2. The clamp ring 1 is an open structure, and the size of the opening can be elastically deformed within a certain range, so as to facilitate the insertion of the wire harness 4. The clamp ring 1 comprises a ring portion 3 for inserting the wire harness 4 to be fixed. Both ends of the opening of the ring portion 3 are provided with roots 7 to form the opening part of the clamp ring 1. That is to say, the clamp ring 1 is formed by bending a profile, and the support 2 is connected to the high temperature surface 9. The top of the support 2 is provided with an inner plug hole 5, and the support 2 is provided with a circumferential direction corresponding to the inner plug hole 5. The cross section of the ring portion 3 is an arc larger than a semicircle, and the bending direction of the root portion 7 is opposite to that of the ring portion 3, so that the clamp 1 can be elastically deformed, and the bottom ends of the roots 7 at both ends are provided with hooks 8 protruding outward, and the spacing between the hooks 8 is larger than the inner diameter of the inner plug hole 5. The root 7 is extended into the inner plug hole 5 by external force. Similarly, the hooks 8 at both ends are relatively tight, and at the same time, the ring portion 3 can be opened a certain distance, thereby enhancing the positioning ability of the wiring harness 4, and the hook 8 is inserted into the clamp limit hole 6 by the elastic force of the clamp 1.

[0032] In this embodiment, there are 6 clamping ring limiting holes 6, and they are symmetrically arranged on the circumference of the pillar 2 in pairs, so that after the root 7 of the clamping ring 1 is inserted into the inner plug hole 5, the hook 8 can smoothly enter the inside of the clamping ring limiting hole 6 and be retained in the clamping ring limiting hole 6 by elastic tension. The number of clamping ring limiting holes 6 can be set according to actual conditions to adjust the angle of the clamping ring 1 and facilitate the fixation of the wiring harness 4. When there are multiple clamping ring limiting holes 6, they can be divided into multiple layers in the axial direction of the pillar 2, or symmetrically and staggered in the circumferential direction of the pillar 2. In this way, when the root 7 is inserted, a relative pair of clamping ring limiting holes 6 can be selected to adjust the orientation of the clamping ring 1 relative to the circumference of the pillar 2 and the height of the clamping ring 1.

[0033] The distance between the clamping ring limiting hole 6 and the top section of the pillar 2 is 1 to 6 times the diameter of the inner hole 5, so that different heights of the root 7 of the clamping ring 1 can be designed to match it. The deeper the insertion, the smaller the swing angle of the clamping ring 1 in the inner hole 5, and the more accurate and reliable the clamping ring limiting is; the material of the clamping ring 1 is a stainless steel profile; the bottom of the pillar 2 can be connected to the high-temperature surface 9 by welding, or the pillar 2 can be connected to the high-temperature surface 9 by bolts, and the specific connection method can be set according to actual conditions.

[0034] In the present invention, the wire harness 4 is inserted into the ring portion 3, and an external force is applied to the roots 7 at both ends toward the inside. The roots 7 and hooks 8 at both ends are relatively close together so that the spacing between the hooks 8 at both ends is smaller than the inner diameter of the inner hole 5. Then the root 7 is extended into the inner hole 5, and then the elastic external expansion force of the roots 7 at both ends of the lower part of the clamping ring 1 is used to insert the hooks 8 on the clamping ring 1 into the clamping ring limiting holes 6, which can avoid the existing use of bolts for fixing, and at the same time avoid tapping the pillar 2, simplifying the structure, saving space, reducing mass, saving costs, and facilitating disassembly; and the contact area between the clamping ring 1 and the pillar 2 is small. Compared with the existing bolt connection, the heat transferred from the high-temperature surface 9 to the clamping ring 1 is reduced, which can effectively reduce the deformation of the structure and has good economic use value.

[0035] Embodiment 2

[0036] like Figure 4 , Figure 5 As shown, two ring portions 3 are provided, and the open ends of the two ring portions on the same side are connected to each other and share a root portion 7, that is, the clamping ring 1 has a double-ring structure, and a spacing is left between the two ring portions 3, so as to enhance the restraining ability of the clamping ring 1 on the wiring harness 4; similarly, by external force acting on the roots 7 at both ends, the roots 7 and hook portions 8 at both ends are relatively tightly closed together, and then the root portion 7 extends into the inner plug hole 5, and through the elastic force of the clamping ring 1 itself, the hook portion 8 on the clamping ring 1 is inserted into the clamping ring limiting hole 6.

[0037] Embodiment 3

[0038] like Figure 6 , Figure 7 , Fig.10 As shown, the wire harness fixing device for high-temperature surfaces includes two independent clamping rings 1, and a spacing is left between the ring parts 3 of the two clamping rings 1, so as to enhance the restraining ability of the wire harness 4; the roots 7 of the clamping rings 1 are arranged closely to each other, that is, the inner plug hole 5 can accommodate the roots 7 of the two clamping rings 1 tightly together; the inner diameter of the clamping ring limiting hole 6 is not less than the superimposed width of the hook parts 8 of the two clamping rings 1; in this embodiment, there are 4 clamping ring limiting holes 6, and they are axially symmetrically opened on the circumference of the pillar 2 in pairs, and the roots 7 of the two independent clamping rings 1 are extended into the inner plug hole 5 together by external force, and the hook parts 8 of the two clamping rings 1 on the same side are inserted into the same clamping ring limiting hole 6.

[0039] The assembly principle of two snap rings 1 is the same as above, and multiple snap rings 1 may be provided according to the situation.

[0040] like Figure 8 As shown, the bottom of the support 2 is welded to the high temperature surface 9; or Fig. 9 As shown, a bolt 10 is connected to the bottom of the support 2, and the support 2 is threadedly connected to the high-temperature surface 9 through the bolt 10. The specific connection method can be set according to actual conditions.

[0041] Embodiment 4

[0042] like Fig.11 , Fig.12 As shown, the wiring harness fixing device for high-temperature surfaces includes two clamping rings 1, which are formed by bending a profile into one piece, that is, the two clamping rings 1 are formed into an integral structure, which is equivalent to the hook portions 8 located on one side of the two clamping rings 1 being connected together, and the roots 7 of the two clamping rings 1 are tightly connected, and the inner plug hole 5 can accommodate the two tightly connected roots 7; and there is also a spacing between the ring portions 3 of the two clamping rings 1, so as to enhance the restraint ability of the wiring harness 4; in this embodiment, there are 4 clamping ring limiting holes 6, and they are axially symmetrically opened on the circumference of the pillar 2 in pairs, and the tightly connected roots 7 of the two clamping rings 1 are extended into the inner plug hole 5 through the action of external force, and the two hook portions 8 located on the same side are inserted into the same clamping ring limiting hole 6, and the insertion principle is the same as above.

[0043] The application of the wiring harness fixing device on the high-temperature surface is applied to the engine exhaust after-treatment catalyst, that is, the bottom of the support 2 is connected to the high-temperature surface 9 of the after-treatment catalyst, and according to the situation, a single clamp or a double clamp is used to limit the wiring harness.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wire harness fixing device for a high temperature surface, comprising a clamp ring and a support, wherein the clamp ring comprises a ring portion for inserting the wire harness to be fixed, and the opening ends of the ring portion are provided with roots to form the opening portion of the clamp ring, and the support is connected to the high temperature surface, characterized in that: The top of the pillar is provided with an inner plug hole, and the pillar is provided with a clamping ring limiting hole in an annular direction that communicates with the inner plug hole; the bending direction of the root is opposite to the bending direction of the ring, so that the clamping ring can be elastically deformed, and the bottom ends of the roots at both ends are provided with hooks protruding outward, and the spacing between the hooks is greater than the inner diameter of the inner plug hole. The root is extended into the inner plug hole by external force, and the hook is inserted into the clamping ring limiting hole by the elastic force of the clamping ring; at least two clamping ring limiting holes are provided, and they are axially symmetrically opened on the circumference of the pillar; the distance between the clamping ring limiting hole and the cross section of the top of the pillar is 1 to 6 times the diameter of the inner plug hole; the material of the clamping ring is a stainless steel profile; the cross section of the ring part is an arc larger than a semicircle; the clamping ring has at least two ring parts, and the open ends on the same side of the ring parts are connected to each other and share one root; or there are at least two clamping rings, and the roots of the clamping rings are arranged closely.

2. The wire harness fixing device for high temperature surface according to claim 1, characterized in that: The support is welded to the high temperature surface.

3. The wire harness fixing device for high temperature surface according to claim 1, characterized in that: The bottom of the support is connected with a bolt, and the support is threadedly connected to the high-temperature surface through the bolt.

4. The wire harness fixing device for high temperature surface according to claim 1, characterized in that: Two clamping rings are provided, and the two clamping rings are integrally formed by bending a profile to form two ring parts, and the roots of the two ring parts correspond to each other and are tightly connected.

5. The wire harness fixing device for high temperature surface according to claim 1 or 4, characterized in that: The inner insertion hole can accommodate at least two tightly connected roots.

6. The wire harness fixing device for high temperature surface according to claim 1 or 4, characterized in that: There is a gap between adjacent ring parts.

7. The wire harness fixing device for high temperature surface according to claim 1 or 4, characterized in that: The roots of the clamps are extended into the inner insertion holes by external force, and the hooks of the clamps on the same side are inserted into the same clamp limiting hole.

8. Application of a wire harness fixing device on a high temperature surface, characterized in that: The wire harness fixing device for high temperature surface as claimed in claim 1 is applied to an engine exhaust aftertreatment catalyst.

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