Wire harness waterproof device for electric steering gear

Abstract

The utility model relates to a wire harness waterproof device for an electric steering gear, which belongs to the field of wire harnesses, and comprises an upper cover body, a lower cover body, a fixed frame assembly, a bump assembly and a wire harness assembly, the fixed frame assembly is fixed on the upper cover body, the bump assembly is fixed on the lower cover body, the fixed frame assembly is clamped with the bump assembly, and the bump assembly is clamped with the wire harness assembly. And the wire harness assembly is clamped between the upper cover body and the lower cover body, so that the waterproof performance of the electric steering gear is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric steering gears, in particular to a wiring harness waterproof device for electric steering gears. Background Art

[0002] The electric steering gear is usually installed on the chassis of the car. The environment is harsh, and the steering gear sensor harness has high requirements for waterproof and dustproof, and the working reliability of the sensor needs to be ensured. However, the harness in the existing sensor is often waterproofed by glue filling, but the glue is extremely unstable in high and low temperature environments and is prone to water leakage, which in turn causes external water to penetrate into the electric steering gear.

[0003] Therefore, a wiring harness waterproof device for an electric steering gear is provided to solve the problems raised in the above background technology. Utility Model Content

[0004] The technical problem solved by the utility model is how to improve the waterproofness of an electric steering gear.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: A wiring harness waterproof device for an electric steering gear, comprising an upper cover body, a lower cover body, a fixing frame assembly, a bump assembly and a wiring harness assembly, wherein the fixing frame assembly is fixed on the upper cover body, the bump assembly is fixed on the lower cover body, the fixing frame assembly is clamped with the bump assembly, and the wiring harness assembly is clamped between the upper cover body and the lower cover body.

[0006] The beneficial effect of the utility model is that the upper cover is fixedly connected with the protrusion assembly of the lower cover through the fixing frame assembly, and the wiring harness assembly is clamped between the upper cover and the lower cover. Subsequently, one side of the lower cover is clamped with the housing of the electric steering gear to prevent external water from penetrating into the electric steering gear, thereby improving the waterproofness of the electric steering gear.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Further, the fixing frame assembly includes a first fixing frame and a second fixing frame, the first fixing frame is fixed to one end of the upper cover body, and the second fixing frames are fixed to both sides of the other end of the upper cover body, and the protrusion assembly includes a first protrusion and a second protrusion, the first protrusion is fixed to one end of the lower cover body, the first protrusion is clamped with the first fixing frame, and the second protrusions are fixed to both sides of the other end of the lower cover body, and the two second protrusions are clamped with the two second fixing frames in a one-to-one correspondence.

[0009] The beneficial effect of adopting the above further solution is that the first fixing frame is engaged with the first protrusion, and the second fixing frame is engaged with the second protrusion, so that the upper cover body and the lower cover body are fixedly connected.

[0010] Furthermore, the fixing frame assembly also includes a third fixing frame, the third fixing frame is fixed to the middle part of the upper cover body, the third fixing frame has a first through hole, and the middle part of the lower cover body has a second through hole corresponding to the position of the first through hole.

[0011] The beneficial effect of adopting the above further solution is that the staff can thread the screws with the first through hole and the second through hole to further lock and fix the upper cover body and the lower cover body, thereby improving the stability of the upper cover body and the lower cover body.

[0012] Furthermore, the wiring harness assembly includes a wiring harness, a wiring harness tube and a sheath, the wiring harness tube and the sheath are fixed on the wiring harness at intervals, the sheath is clamped between the upper cover body and the lower cover body, and the wiring harness tube is sleeved in the lower cover body.

[0013] The beneficial effect of adopting the above further solution is that the protective sleeve is arranged between the upper cover and the lower cover to prevent external water from penetrating into the cavity surrounded by the upper cover and the lower cover. The wiring harness tube is arranged in the lower cover to prevent external water from penetrating into the electric steering gear through the lower cover.

[0014] Furthermore, the inner wall of the upper cover body has a first groove, the inner wall of the lower cover body has a second groove corresponding to the position of the first groove, and the sheath is clamped between the first groove and the second groove.

[0015] The beneficial effect of adopting the above further solution is that the sheath is arranged between the first groove and the second groove, which can prevent external water from penetrating into the cavity surrounded by the upper cover body and the lower cover body through the gap surrounded by the first groove and the second groove.

[0016] Furthermore, a third groove is provided in the middle of the lower cover body, and the wiring harness sleeve is arranged in the third groove.

[0017] The beneficial effect of adopting the above further solution is that the wiring harness tube sleeve is arranged in the third groove, which can prevent external water from penetrating into the electric steering gear through the third groove.

[0018] Furthermore, it also includes a fixing plate, one end of which is fixedly connected to the upper cover body, and the other end of which is in contact with the wiring harness tube.

[0019] The beneficial effect of adopting the above further solution is that the other end of the fixing plate abuts against the wiring harness tube, which can prevent the wiring harness tube from loosening from the third groove, thereby preventing external water from penetrating into the electric steering gear through the gap.

[0020] Furthermore, one side of the lower cover body has a third through hole, and the wiring harness assembly passes through the third through hole.

[0021] The beneficial effect of adopting the above further solution is that during operation, the wire harness integrally injection-molded with the wire harness tube can pass through the third through hole and enter the electric steering gear housing.

[0022] Furthermore, it also includes a sealing ring. The outer wall of one side of the lower cover body has an inner concave platform extending radially inward, and the sealing ring is sleeved outside the inner concave platform.

[0023] The beneficial effect of adopting the above further solution is that one side of the lower cover body is clamped with the electric steering gear housing through a sealing ring, thereby increasing the sealing between the lower cover body and the electric steering gear and preventing external water from penetrating into the electric steering gear.

[0024] Furthermore, the upper cover body and the lower cover body are both made of plastic.

[0025] The beneficial effect of adopting the above further solution is that the upper cover body and the lower cover body are both made of plastic material, which can reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an exploded schematic diagram of the wiring harness waterproof device of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the upper cover of the utility model;

[0028] Figure 3 This is one of the schematic diagrams of the lower cover structure of the utility model;

[0029] Figure 4 This is the second schematic diagram of the lower cover structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the wiring harness assembly of the utility model;

[0031] Figure 6 It is a schematic diagram of the assembly of the wiring harness waterproof device of the utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Upper cover; 101. First groove; 2. Lower cover; 201. Second groove; 202. Third groove; 203. Inner concave platform; 204. Cover; 205. Hollow cylinder; 3. Fixing frame assembly; 301. First fixing frame; 302. Second fixing frame; 303. Third fixing frame; 4. Bump assembly; 401. First bump; 402. Second bump; 5. Wiring harness assembly; 501. Wiring harness tube; 502. Sheath; 6. First through hole; 7. Second through hole; 8. Sealing ring; 9. Third through hole; 10. Fixing plate; 11. Wiring harness; 12. Electric steering gear housing. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] like Figure 1-Figure 6 As shown, this embodiment provides a wiring harness waterproof device for an electric steering gear, including an upper cover body 1, a lower cover body 2, a fixing frame assembly 3, a bump assembly 4 and a wiring harness assembly 5, the fixing frame assembly 3 is fixed on the upper cover body 1, the bump assembly 4 is fixed on the lower cover body 2, the fixing frame assembly 3 and the bump assembly 4 are clamped, and the wiring harness assembly 5 is clamped between the upper cover body 1 and the lower cover body 2.

[0036] The upper cover 1 is fixedly connected with the protrusion assembly 4 of the lower cover 2 through the fixing frame assembly 3, and the wiring harness assembly 5 is clamped between the upper cover 1 and the lower cover 2. Subsequently, one side of the lower cover 2 is clamped with the electric steering gear housing 12 to prevent external water from penetrating into the electric steering gear, thereby improving the waterproofness of the electric steering gear.

[0037] Specifically, the upper cover body 1 and the fixing frame assembly 3 are an integral injection molding structure, and the lower cover body 2 and the protrusion assembly 4 are an integral injection molding structure.

[0038] On the basis of the above scheme, the fixing frame assembly 3 includes a first fixing frame 301 and a second fixing frame 302, the first fixing frame 301 is fixed to one end of the upper cover body 1, and the second fixing frames 302 are fixed to both sides of the other end of the upper cover body 1, the protrusion assembly 4 includes a first protrusion 401 and a second protrusion 402, the first protrusion 401 is fixed to one end of the lower cover body 2, the first protrusion 401 is clamped with the first fixing frame 301, and the second protrusions 402 are fixed to both sides of the other end of the lower cover body 2, and the two second protrusions 402 are clamped with the two second fixing frames 302 in a one-to-one correspondence.

[0039] The first fixing frame 301 is engaged with the first protrusion 401 , and the second fixing frame 302 is engaged with the second protrusion 402 , so that the upper cover body 1 and the lower cover body 2 are fixedly connected.

[0040] Specifically, in this embodiment, the first fixing frame 301 and the second fixing frame 302 have the same shape and size, and the first protrusion 401 and the second protrusion 402 have the same shape and size. The first fixing frame 301 and the second fixing frame 302 can also be set to different shapes according to actual conditions, as long as they can be matched and fixed with the first protrusion 401 and the second protrusion 402 respectively.

[0041] A first fixing frame 301 is fixed to the top of one end of the upper cover body 1 , and second fixing frames 302 are symmetrically fixed to both sides of the other end of the upper cover body 1 .

[0042] A first protrusion 401 is fixed to the top of one end of the lower cover body 2 , and second protrusions 402 are symmetrically fixed to both sides of the other end of the lower cover body 2 .

[0043] On the basis of the above scheme, the fixing frame assembly 3 also includes a third fixing frame 303, the third fixing frame 303 is fixed to the middle part of the upper cover body 1, the third fixing frame 303 has a first through hole 6, and the middle part of the lower cover body 2 has a second through hole 7 corresponding to the position of the first through hole 6.

[0044] The staff can threadably connect the screws with the first through hole 6 and the second through hole 7 to further lock and fix the upper cover body 1 and the lower cover body 2, thereby improving the stability of the upper cover body 1 and the lower cover body 2.

[0045] Specifically, third fixing frames 303 are symmetrically fixed on both sides of the middle of the upper cover body 1 .

[0046] The staff can pass the bolts through the first through holes 6 and the second through holes 7 on both sides of the upper cover body 1 and the lower cover body 2 to achieve double-bolt locking and fixing of the upper cover body 1 and the lower cover body 2 .

[0047] In addition, in order to enhance the torsional strength of the bolt, a copper sleeve can be added to the bolt.

[0048] Based on the above scheme, the wiring harness assembly 5 includes a wiring harness 11, a wiring harness tube 501 and a sheath 502, the wiring harness tube 501 and the sheath 502 are fixed on the wiring harness 11 at intervals, the sheath 502 is clamped between the upper cover body 1 and the lower cover body 2, and the wiring harness tube 501 is sleeved in the lower cover body 2.

[0049] The sheath 502 is sandwiched between the upper cover 1 and the lower cover 2 to prevent external water from penetrating into the cavity surrounded by the upper cover 1 and the lower cover 2. The harness tube 501 is sleeved in the lower cover 2 to prevent external water from penetrating into the electric steering gear through the lower cover 2.

[0050] Specifically, one end of the wire harness 11 is integrally formed by injection molding with the wire harness tube 501 , and the other end of the wire harness 11 is sleeved in the sheath 502 .

[0051] The sheath 502 is made of plastic.

[0052] In addition, in this embodiment, the wire harness 11 includes six core wires arranged in parallel, and a waterproof layer is provided on the outer surface of the wire harness 11.

[0053] Based on the above solution, the inner wall of the upper cover body 1 has a first groove 101 , the inner wall of the lower cover body 2 has a second groove 201 corresponding to the first groove 101 , and the sheath 502 is sandwiched between the first groove 101 and the second groove 201 .

[0054] The sheath 502 is sandwiched between the first groove 101 and the second groove 201 to prevent external water from penetrating into the cavity surrounded by the upper cover body 1 and the lower cover body 2 through the gap surrounded by the first groove 101 and the second groove 201 .

[0055] Specifically, in this embodiment, the first groove 101 and the second groove 201 have the same size and are arranged opposite to each other.

[0056] The first groove 101 and the second groove 201 are both semicircular grooves, and the first groove 101 and the second groove 201 can enclose a circular through hole with the same diameter as the sheath 502 .

[0057] In addition, if Figure 2 and Figure 3 As shown, two first grooves 101 may be arranged at intervals on the inner wall of the upper cover body 1 along the vertical direction, and two second grooves 201 corresponding to the positions of the two first grooves 101 may be arranged on the inner wall of the lower cover body 2 along the vertical direction, and the sheath 502 is clamped between the two first grooves 101 and the two second grooves 201 along the vertical direction, which can further prevent the wiring harness 11 from loosening.

[0058] On the basis of the above solution, a third groove 202 is provided in the middle of the lower cover 2 , and the wiring harness tube 501 is sleeved in the third groove 202 .

[0059] The wiring harness tube 501 is sleeved in the third groove 202 , so as to prevent external water from penetrating into the electric steering gear through the third groove 202 .

[0060] Specifically, the wire harness tube 501 is made of plastic.

[0061] In this embodiment, the wiring harness tube 501 is a cylinder, and the diameter of the wiring harness tube 501 is slightly smaller than the diameter of the third groove 202 .

[0062] On the basis of the above solution, a fixing plate 10 is further included, one end of the fixing plate 10 is fixedly connected to the upper cover 1 , and the other end of the fixing plate 10 is in contact with the wiring harness tube 501 .

[0063] The other end of the fixing plate 10 abuts against the wiring harness tube 501, which can prevent the wiring harness tube 501 from being loosened from the third groove 202, thereby preventing external water from penetrating into the electric steering gear through the gap.

[0064] Specifically, one end of the fixing plate 10 is fixedly connected to the inner wall of the upper cover 1. Both sides of the fixing plate 10 are curved, so as to better wrap the wiring harness tube 501.

[0065] The other end of the fixing plate 10 abuts against one end of the wiring harness tube 501 close to the upper cover 1 .

[0066] On the basis of the above solution, one side of the lower cover body 2 has a third through hole 9 , and the wiring harness assembly 5 passes through the third through hole 9 .

[0067] During operation, the wire harness 11 integrally molded with the wire harness tube 501 can pass through the third through hole 9 and enter the electric steering gear housing 12 .

[0068] Specifically, the lower cover body 2 includes a cover body 204 and a hollow cylinder 205 , one end of the cover body 204 is connected to one end of the hollow cylinder 205 , and a third through hole 9 is provided in the middle of the other end of the hollow cylinder 205 .

[0069] The hollow cylinder 205 has a third groove 202 therein, and the wiring harness tube 501 is pressed into the third groove 202 in a horizontal direction by interference fit, so as to prevent external water from penetrating into the electric steering gear through the lower cover 2 .

[0070] In addition, in the present embodiment, the third through hole 9 is a waist-shaped hole, and the third through hole 9 may also be set to a through hole of other shapes, such as a circular through hole, according to actual needs, as long as the wiring harness 11 can pass through the third through hole 9.

[0071] On the basis of the above solution, a sealing ring 8 is further included. An outer wall on one side of the lower cover body 2 has an inner concave platform 203 extending radially inward, and the sealing ring 8 is sleeved outside the inner concave platform 203 .

[0072] One side of the lower cover 2 is clamped with the electric steering gear housing 12 through a sealing ring 8, thereby increasing the sealing performance between the lower cover 2 and the electric steering gear and preventing external water from penetrating into the electric steering gear.

[0073] Specifically, in this embodiment, two sealing rings 8 are included. The outer wall of the hollow cylinder 205 is separated by inner concave platforms 203 extending radially inward. The two sealing rings 8 are respectively sleeved in the two inner concave platforms 203 .

[0074] The staff can also set a plurality of sealing rings 8 and a plurality of concave platforms 203 according to actual needs to increase the sealing performance of the connection between the lower cover 2 and the electric steering gear housing 12 .

[0075] On the basis of the above solution, the upper cover body 1 and the lower cover body 2 are both made of plastic.

[0076] The upper cover body 1 and the lower cover body 2 are both made of plastic, which can reduce production costs.

[0077] In this embodiment, when in use, first, the harness tube 501 is sleeved in the third groove 202, and the fixing plate 10 is abutted against the harness tube 501, and then the sheath 502 is clamped between the first groove 101 and the second groove 201;

[0078] Secondly, the first fixing frame 301 of the upper cover body 1 is fixedly matched with the first protrusion 401 of the lower cover body 2, and the second fixing frame 302 of the upper cover body 1 is fixedly matched with the second protrusion 402 of the lower cover body 2; then, the staff further locks and fixes the upper cover body 1 and the lower cover body 2 by screws through the first through hole 6 and the second through hole 7;

[0079] Finally, the staff installs the sealing ring 8 on the inner concave platform 203 of the lower cover body 2, and clamps one side of the lower cover body 2 with the electric steering gear housing 12.

[0080] In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0081] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0082] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wiring harness waterproof device for an electric steering gear, characterized in that: The invention comprises an upper cover body (1), a lower cover body (2), a fixing frame assembly (3), a protrusion assembly (4) and a wiring harness assembly (5); the fixing frame assembly (3) is fixed on the upper cover body (1), the protrusion assembly (4) is fixed on the lower cover body (2), the fixing frame assembly (3) is snap-connected with the protrusion assembly (4), and the wiring harness assembly (5) is clamped between the upper cover body (1) and the lower cover body (2).

2. A wiring harness waterproof device for an electric steering gear according to claim 1, characterized in that: The fixing frame assembly (3) comprises a first fixing frame (301) and a second fixing frame (302); the first fixing frame (301) is fixed to one end of the upper cover body (1), and the second fixing frames (302) are fixed to both sides of the other end of the upper cover body (1); the protrusion assembly (4) comprises a first protrusion (401) and a second protrusion (402); the first protrusion (401) is fixed to one end of the lower cover body (2), the first protrusion (401) is clamped with the first fixing frame (301), and the second protrusions (402) are fixed to both sides of the other end of the lower cover body (2), and the two second protrusions (402) are clamped with the two second fixing frames (302) in a one-to-one correspondence.

3. The wiring harness waterproof device for an electric steering gear according to claim 1, characterized in that: The fixing frame assembly (3) further comprises a third fixing frame (303), the third fixing frame (303) being fixed in the middle of the upper cover body (1), the third fixing frame (303) having a first through hole (6), and the middle of the lower cover body (2) having a second through hole (7) corresponding in position to the first through hole (6).

4. The wiring harness waterproof device for an electric steering gear according to claim 1, characterized in that: The wiring harness assembly (5) comprises a wiring harness (11), a wiring harness tube (501) and a sheath (502); the wiring harness tube (501) and the sheath (502) are fixed on the wiring harness (11) at intervals; the sheath (502) is clamped between the upper cover (1) and the lower cover (2); and the wiring harness tube (501) is sleeved inside the lower cover (2).

5. A wiring harness waterproof device for an electric steering gear according to claim 4, characterized in that: The inner wall of the upper cover body (1) has a first groove (101), the inner wall of the lower cover body (2) has a second groove (201) corresponding to the position of the first groove (101), and the sheath (502) is sandwiched between the first groove (101) and the second groove (201).

6. A wiring harness waterproof device for an electric steering gear according to claim 4, characterized in that: The lower cover body (2) has a third groove (202) in the middle, and the wiring harness tube (501) is sleeved in the third groove (202).

7. A wiring harness waterproof device for an electric steering gear according to claim 6, characterized in that: It also comprises a fixing plate (10), one end of which is fixedly connected to the upper cover body (1), and the other end of which is in contact with the wiring harness tube (501).

8. The wiring harness waterproof device for an electric steering gear according to claim 6, characterized in that: One side of the lower cover (2) is provided with a third through hole (9), and the wiring harness assembly (5) passes through the third through hole (9).

9. The wiring harness waterproof device for an electric steering gear according to claim 1, characterized in that: It also comprises a sealing ring (8); an outer wall on one side of the lower cover body (2) has an inner concave platform (203) extending radially inwards; and the sealing ring (8) is sleeved outside the inner concave platform (203).

10. A wiring harness waterproof device for an electric steering gear according to any one of claims 1 to 9, characterized in that: The upper cover body (1) and the lower cover body (2) are both made of plastic.

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