Engine wire harness fixing device

Abstract

The utility model discloses an engine wire harness fixing device, which belongs to the technical field of engine wire harnesses and comprises a fixing bolt, a clamping block and a ribbon, one end of the ribbon is connected with the clamping block, the fixing bolt comprises a double-end stud and a thrust cap integrally arranged in the middle of the double-end stud, and the other end of the ribbon is connected with the clamping block. One end of the double-end stud is clamped with the clamping block, and the other end of the double-end stud is fixedly mounted on the cylinder cover; the clamping block comprises a bottom plate and a clamping structure arranged on the end face of the bottom plate, the clamping structure is composed of a plurality of flanges extending in the axial direction, a guide fixing hole is formed in the middle of the bottom plate, the flanges are evenly distributed along the edge of the guide fixing hole, and the fixing bolt can be used for normal fixing use of the cylinder cover. The clamping block is installed at the other protruding end of the fixing bolt through the pressing technology, installation is convenient, assembly is firm, meanwhile, a wire harness installation support is omitted, cost is saved, production takt time is shortened, assembly efficiency is improved, and cost of the whole machine is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine wire harnesses, and particularly relates to a fixing device for an engine wire harness. Background Art

[0002] To ensure the normal communication of the vehicle ECU, transmit sensor signals, and ensure accurate control of the engine working state, the engine is connected with wire harnesses of various sensors. During the assembly of the engine wire harness in the whole vehicle, a fixing structure is usually used to fix the wire harness, separate the wire harnesses, avoid entanglement, facilitate assembly and fixing, and ensure that the working state of the wire harness does not shake. Existing engine wire harnesses usually use bolts to fix the wire harness bracket, and corresponding clamps are added to the wire harness for fitting and assembly. Therefore, during the wire harness design process, a special wire harness bracket needs to be designed to match the wire harness routing, which not only increases the design workload, but also increases the workshop assembly workload, prolongs the production beat, and there are also problems such as inconvenient arrangement and disassembly of the clamps and easy damage during disassembly. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a fixing device for an engine wire harness, which has a simple structure, is easy to install, improves the assembly efficiency, shortens the production beat, reduces the number of parts, and also reduces the overall machine cost.

[0004] To solve the above technical problem, the technical solution of the utility model is:

[0005] A fixing device for an engine wire harness includes: a fixing bolt, a clamping block, and a cable tie. One end of the cable tie is connected to the clamping block. The fixing bolt includes a double-headed stud and a thrust cap integrally provided in the middle of the double-headed stud. One end of the double-headed stud is clamped to the clamping block, and the other end is fixedly installed on the cylinder head cover. The clamping block includes a bottom plate and a clamping structure provided on the end face of the bottom plate. The clamping structure is composed of a plurality of axially extending flanges. A guiding fixing hole is opened in the middle of the bottom plate, and the plurality of flanges are evenly distributed along the edge of the guiding fixing hole.

[0006] Further, a plurality of strengthening structures connected to the flanges are provided on the bottom plate.

[0007] Further, the strengthening structure includes a tubular supporting part. One end of the supporting part is connected to the bottom plate. Multiple parts of the supporting part are recessed inward and form the flanges at the raised parts on the inner wall.

[0008] Further, the strengthening structure further includes a protruding part axially provided on the inner surface of the supporting part away from the central position.

[0009] Further, the strengthening structure further includes a reinforcing portion connected to the bottom plate. The reinforcing portion is disposed on the outer surface of the supporting portion close to the side of the cable tie, and the reinforcing portion extends axially.

[0010] Further, the strengthening structure further includes a connecting portion disposed at one end of the supporting portion away from the bottom plate. The connecting portion is composed of a plurality of radially arranged connecting arms. One ends of the connecting arms are connected together, and the other ends are respectively connected to the ends of the flange.

[0011] Further, a locking plate is connected between the bottom plate and the cable tie. A locking hole is formed in the locking plate, and anti-slip teeth are provided on the cable tie. The cable tie passes through the locking hole and is clamped tightly.

[0012] Further, the clamping block is a hard plastic clamping block.

[0013] Further, the clamping block and the cable tie are integrally injection-molded.

[0014] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] Since the engine wire harness fixing device of the present utility model includes: a fixing bolt, a clamping block and a cable tie. One end of the cable tie is connected to the clamping block. The fixing bolt includes a double-headed stud and a thrust cap integrally provided in the middle of the double-headed stud. One end of the double-headed stud is clamped to the clamping block, and the other end is fixedly installed on the cylinder head cover. The clamping block includes a bottom plate and a clamping structure disposed on the end face of the bottom plate. The clamping structure is composed of a plurality of axially extending flanges. A guiding fixing hole is formed in the middle of the bottom plate, and the plurality of flanges are evenly distributed along the edge of the guiding fixing hole. The fixing bolt can be used for the normal fixing of the cylinder head cover. After the wire harness is bundled by the cable tie, the clamping block can be installed on the protruding other end of the fixing bolt through a pressing process. The installation is convenient, not only the assembly is firm, but also the wire harness installation bracket is omitted, saving costs, reducing the production beat time, improving the assembly efficiency, reducing the number of parts, and also reducing the overall machine cost. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the engine wire harness fixing device of the present utility model;

[0017] Figure 2 is a top view of a partial structure of the engine wire harness fixing device of the present utility model;

[0018] Figure 3 is a radial cross-sectional view of the clamping block;

[0019] Figure 4 is a schematic three-dimensional structure diagram;

[0020] Figure 5It is a schematic diagram of the use state of the engine wire harness fixing device of the present utility model;

[0021] In the figure, 1 is a fixing bolt, 11 is a stud, 12 is a thrust cap, 2 is a clamping block, 21 is a bottom plate, 22 is a guiding fixing hole, 23 is a supporting part, 24 is a flange, 25 is a protruding part, 26 is a reinforcing part, 27 is a connecting part, 3 is a cable tie, 31 is an anti-slip tooth, 4 is a locking plate, 41 is a locking hole, 5 is a cylinder head cover, and 6 is a wire harness. Specific embodiments

[0022] The present utility model will be further described below in conjunction with the drawings and embodiments. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0023] As Figure 1 and Figure 5 As shown together, an engine wire harness fixing device includes: a fixing bolt 1, a clamping block 2, and a cable tie 3. One end of the cable tie 3 is connected to the clamping block 2. The fixing bolt 1 includes a stud 11 and a thrust cap 12 integrally provided in the middle of the stud 11. One end of the stud 11 is clamped to the clamping block 2, and the other end is fixedly installed on the cylinder head cover 5. The stud 11 and the thrust cap 12 are formed by integral casting. The fixing bolt 1 can be used for the normal fixing of the cylinder head cover 5. When installing the cylinder head cover 5, only the fixing bolt 1 of the present application needs to be used at the predetermined wire harness 6 fixing position. By borrowing the bolt of the cylinder head cover 5 to cooperate with the clamping block 2 to fix the wire harness, the redundant design of the wire harness bracket is reduced, the number of parts is reduced, and thus the cost is reduced.

[0024] As Figure 1 and Figure 3 As shown together, the clamping block 2 includes a bottom plate 21 and a clamping structure provided on the end face of the bottom plate 21. The clamping structure is composed of a plurality of axially extending flanges 24. A guiding fixing hole 22 is opened in the middle of the bottom plate 21. The plurality of flanges 24 are evenly distributed along the edge of the guiding fixing hole 22. The guiding fixing hole 22 can play a certain guiding and limiting role in the penetration of the fixing bolt 1.

[0025] After the cable tie 3 binds the wire harness 6, pressing the clamping block 2 onto the stud protruding from the fixing bolt 1 can fix the wire harness 6, with high assembly efficiency and shortened production cycle. Among them, the outer diameter of the fixing bolt 1 is slightly larger than the inner diameters of the guiding fixing hole 22 and the flange 24. After the stud passes through the guiding fixing hole 22 and extends between the flanges 24, a large frictional force will be generated between the thread of the fixing bolt 1 and the edge of the guiding fixing hole 22, as well as between the thread of the fixing bolt 1 and the flange 24, making the clamping block 2 not easy to fall off and ensuring the reliability of the wire harness assembly.

[0026] To enhance the strength of the flange 24 and avoid the situation where the flange 24 deforms or breaks, resulting in loosening of the clamping block 2, a plurality of strengthening structures connected to the flange 24 are provided on the bottom plate 21. The strengthening structure and the flange 24 can be directly connected or indirectly connected.

[0027] As Figure 2 、 Figure 3 and Figure 4 collectively shown, this application adopts a variety of strengthening structures to increase the strength of the flange 24. Specifically, the strengthening structure includes a tubular support portion 23. One end of the support portion 23 is connected to the bottom plate 21, and multiple parts of the support portion 23 are recessed inward and form the flange 24 at the raised portions on the inner wall. In this application, 3 flanges 24 are formed on the support portion 23, and the support portion 23 between adjacent two flanges 24 forms a tubular structure with an opening on the side close to the guiding fixing hole 22.

[0028] Furthermore, the strengthening structure further includes a raised portion 25 axially disposed on the inner surface of the support portion 23 away from the central position. Even further, the strengthening structure further includes a reinforcing portion 26 connected to the bottom plate 21, and the reinforcing portion 26 is disposed on the outer surface of the support portion 23 close to the cable tie 3 side and extends axially. Here, the axial direction refers to the axial direction of the fixing bolt 1. Still further, the strengthening structure further includes a connecting portion 27 disposed at one end of the support portion 23 away from the bottom plate 21. The connecting portion 27 is composed of a plurality of radially arranged connecting arms, and one ends of the connecting arms are connected together and the other ends are respectively connected to the ends of the flange 24. Among them, both the raised portion 25 and the reinforcing portion 26 indirectly enhance the strength of the flange 24 by enhancing the strength of the support portion 23.

[0029] As Figure 2 shown, a locking plate 4 is connected between the bottom plate 21 and the cable tie 3. A locking hole 41 is provided on the locking plate 4, and anti-slip teeth 31 are provided on the cable tie 3. The cable tie 3 passes through the locking hole 41 and is clamped tightly.

[0030] Among them, the clamping block 2 is a hard plastic clamping block, not easy to deform, and has a good clamping effect with the fixing bolt 1. To ensure the reliability of the connection between the clamping block 2 and the cable tie 3, the clamping block 2, the locking plate 4 and the cable tie 3 are integrally injection molded.

[0031] The engine wiring harness fixing device of the present utility model installs a double-headed fixing bolt on the cylinder head cover. After the wiring harness is tied with a cable tie, the clamping block is installed at the protruding end of the fixing bolt through a pressing process. The guiding fixing hole and the flange of the clamping structure clamp the fixing bolt, with firm assembly, convenient installation, eliminating the wiring harness installation bracket, saving costs, reducing the production beat time, improving the assembly efficiency, reducing the number of parts, and also reducing the overall machine cost.

[0032] In the description of this specification, unless otherwise clearly defined, words such as "set", "install", and "connect" should be understood in a broad sense, and those skilled in the technical field can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0033] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. These are only illustrative examples, and the protection scope of the present utility model is defined by the claims. Without departing from the principles and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners without any creative work, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An engine wiring harness fixing device, comprising: A fixing bolt, a clamping block and a cable tie, one end of the cable tie is connected to the clamping block, and it is characterized in that the fixing bolt includes a double-headed stud and a thrust cap integrally arranged in the middle of the double-headed stud, one end of the double-headed stud is clamped with the clamping block, and the other end is fixedly installed on the cylinder cover; the clamping block includes a bottom plate and a clamping structure arranged on the end face of the bottom plate, the clamping structure is composed of a plurality of axially extending flanges, a guiding fixing hole is formed in the middle of the bottom plate, and the plurality of flanges are evenly distributed along the edge of the guiding fixing hole.

2. The engine wiring harness fixing device according to claim 1, characterized in that A plurality of reinforcing structures connected to the flanges are arranged on the bottom plate.

3. The engine wiring harness fixing device according to claim 2, wherein, The reinforcing structure includes a tubular support part, one end of the support part is connected to the bottom plate, and a plurality of parts of the support part are recessed inward and form the flange at the raised part of the inner wall.

4. The engine wire harness fixing device according to claim 3, characterized in that, The reinforcing structure further includes a raised part, and the raised part is axially arranged on the inner surface of the support part away from the central position.

5. The engine wiring harness fixing device according to claim 3, characterized in that, The reinforcing structure further includes a reinforcing part connected to the bottom plate, the reinforcing part is arranged on the outer surface of the support part close to the cable tie side, and the reinforcing part extends axially.

6. The engine wiring harness fixing device according to claim 3, characterized in that, The reinforcing structure further includes a connecting part arranged at one end of the support part away from the bottom plate, the connecting part is composed of a plurality of radially arranged connecting arms, one ends of the connecting arms are connected together, and the other ends are respectively connected to the ends of the flanges.

7. The engine wiring harness fixing device according to claim 5, characterized in that, A lock plate is connected between the bottom plate and the cable tie, a lock hole is formed in the lock plate, anti-slip teeth are arranged on the cable tie, and the cable tie passes through the lock hole and is clamped tightly.

8. The engine wiring harness fixing device according to any one of claims 1 to 7, characterized in that, The clamping block is a hard plastic clamping block.

9. The engine wiring harness fixing device according to claim 8, characterized in that, The clamping block and the cable tie are integrally injection-molded.

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