Mounting structure of actuator and vehicle

Abstract

The utility model provides an installation structure of an actuator and a vehicle. The installation structure of the actuator comprises a first fixing support connected to a drum brake and a second fixing support arranged on a drive axle housing. A first mounting part and a first wire harness fixing piece are arranged on the first fixing support, the first mounting part is used for mounting a main body part of the EPB actuator, and a second wire harness fixing piece is arranged on the second fixing support; a wire harness of the EPB actuator can be sequentially restrained on the first wire harness fixing piece and the second wire harness fixing piece. The mounting structure of the actuator not only can provide a better fixing point for the EPB actuator, but also can effectively restrain the wiring harness trend of the EPB actuator, ensures the rationality and safety of the wiring harness trend, and has a very good use effect.

Description

Technical Field

[0001] The utility model relates to the technical field of chassis, and in particular to a mounting structure of an actuator. The utility model also relates to a vehicle provided with the mounting structure of the actuator. Background Art

[0002] With the continuous advancement of science and technology and the development of unmanned driving technology, unmanned driving technology has gradually been applied in large quantities to real-world scenarios, especially in the commercial field of low-speed unmanned logistics vehicles. Unmanned logistics vehicles all use a wire control brake system to achieve service braking and parking brake functions, and the disc EPB actuator structure is mostly used in parking brakes. However, with the mass production of unmanned logistics vehicles, cost optimization is the top priority. Drum EPB actuators are gradually being applied in large quantities on unmanned logistics vehicles due to their advantages of low cost and reliability.

[0003] Due to the limited space on the drum brake base plate, the EPB actuator requires a safe and reliable fixed point when in action, and the wiring harness layout of the EPB actuator requires more brackets to provide fixed points, which results in a large number of parts and requires additional bracket manufacturing molds and welding fixtures, which is not conducive to reducing manufacturing costs. Therefore, it is urgent to design an actuator installation structure, which is very necessary. Utility Model Content

[0004] In view of this, the utility model aims to propose an actuator installation structure, which can ensure the installation reliability of the EPB actuator and also ensure the rationality and safety of the EPB actuator wiring harness direction.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An actuator mounting structure includes a first fixing bracket connected to a drum brake and a second fixing bracket arranged on a drive axle housing;

[0007] The first fixing bracket is provided with a first mounting portion and a first harness fixing piece, the first mounting portion is used to mount the main body of the EPB actuator, and the second fixing bracket is provided with a second harness fixing piece;

[0008] The wire harness of the EPB actuator can be restrained on the first wire harness fixture and the second wire harness fixture in sequence.

[0009] Furthermore, the first fixed bracket includes a main board body connected to the drum brake, and an extension arm connected to the main board body, the extension arm extends from the main board body to a side away from the main board body and is bent; the first mounting portion is arranged on the main board body, and the first wiring harness fixing piece is arranged on the extension arm.

[0010] Furthermore, the main plate body is provided with a connecting flange, and the main plate body is welded and connected to the bottom plate of the drum brake via the connecting flange.

[0011] Furthermore, the main board body is provided with a through hole for the parking cable of the EPB actuator to pass through; and the angle α between the connecting flange and the main board body satisfies: 50°≤α≤53°.

[0012] Furthermore, the first mounting portion includes first mounting holes provided on the main board body, and the first mounting holes are three in number and are respectively located at the vertices of a triangle; and / or, a weight-reducing hole is provided on the main board body.

[0013] Furthermore, the second fixed bracket includes a U-shaped bracket body, the bracket body has a first plate body and a second plate body arranged relatively to each other, and a connecting plate body connecting the first plate body and the second plate body; the first plate body and the second plate body are both provided with a second mounting portion for mounting a shock absorber, and the second wiring harness fixing piece is arranged on the connecting plate body.

[0014] Furthermore, the second fixing bracket is connected to the drive axle housing through the first plate body and the second plate body.

[0015] Furthermore, the second mounting portions on the first plate body and the second plate body each include a second mounting hole, and the shock absorber is mounted on the second fixing bracket by passing through the connecting lugs of the shock absorber and the connecting members in each of the second mounting holes.

[0016] Furthermore, the first wiring harness fixing member is snap-connected to the first fixing bracket; and / or the second wiring harness fixing member is snap-connected to the second fixing bracket. Compared with the prior art, the utility model has the following advantages:

[0017] The installation structure of the actuator described in the utility model can provide not only a good fixing point for the EPB actuator, but also a mounting point for the wiring harness of the EPB actuator, through the first fixing bracket connected to the drum brake. And through the second fixing bracket arranged on the drive axle housing, the second wiring harness fixing part on the second fixing bracket also provides a mounting point for the wiring harness of the EPB actuator. At the same time, the arrangement of the first wiring harness fixing part and the second wiring harness fixing part enables the wiring harness of the EPB actuator to be restrained on the first wiring harness fixing part and the second wiring harness fixing part in sequence, which can effectively restrain the wiring harness direction of the EPB actuator, ensure the rationality and safety of the wiring harness direction of the EPB actuator, and have a good use effect.

[0018] In addition, the first fixing bracket includes a main body and an extension arm, and the first mounting portion is arranged on the main body, and the first harness clip is arranged on the extension arm, which is conducive to the arrangement of the EPB actuator and its harness. The connection flange arranged on the main body is conducive to the welding connection of the first fixing bracket on the drum brake, which can improve the fixing effect of the first fixing bracket and effectively solve the problem that riveting or screwing cannot be used due to the compact space of the drum brake bottom plate, thereby ensuring the stability and reliability of the EPB actuator when the parking brake is in action.

[0019] Secondly, the through hole set on the main board body is convenient for the passage of the parking cable of the EPB actuator. The angle between the connecting flange and the main board body is limited, which can help ensure that the axial direction of the through hole is consistent with the axial direction of the end of the actuator parking cable, ensuring the installation requirements of the parking cable. The first installation holes are three arranged at the vertices of the triangle, which can provide a three-point support structure for the EPB actuator to ensure the support strength during the operation of the EPB actuator. The design of the weight-reducing hole is not only conducive to the lightweight design of the first fixed bracket, but also conducive to avoiding surrounding components.

[0020] Furthermore, the second fixing bracket adopts a U-shaped bracket body, which can improve the overall structural strength of the second fixing bracket on the one hand, and integrate the shock absorber mounting point and the wiring harness fixing point on the second fixing bracket on the other hand, thereby reducing the number of parts and facilitating the arrangement of the second wiring harness clip. The second fixing bracket is connected to the drive axle housing through the first plate body and the second plate body, which can improve the stability of the connection between the second fixing bracket and the drive axle housing, and is conducive to ensuring the reliability of the shock absorber installation.

[0021] In addition, the second mounting portion adopts a second mounting hole, which has a simple structure, is easy to process and manufacture, and is also convenient for the installation of the shock absorber. The first wiring harness fixture is arranged on the first fixing bracket in a snap-fit ​​manner, which can improve the convenience of installing the first wiring harness fixture. The second wiring harness fixture is arranged on the second fixing bracket in a snap-fit ​​manner, which can improve the convenience of installing the second wiring harness fixture. Another purpose of the utility model is to provide a vehicle, on which the mounting structure of the actuator as described above is provided.

[0022] The vehicle of the utility model can ensure the reliability of the installation of the EPB actuator by adopting the installation structure of the actuator as described above, and can also restrict the direction of the wiring harness of the EPB actuator, thereby ensuring the rationality and safety of the direction of the wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of the installation structure of the actuator according to an embodiment of the utility model from a first perspective;

[0025] Figure 2 A structural schematic diagram of the installation structure of the actuator according to an embodiment of the utility model from a second perspective;

[0026] Figure 3 This is a schematic structural diagram of the first fixing bracket according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic structural diagram of the second fixing bracket according to an embodiment of the utility model;

[0028] Description of reference numerals:

[0029] 1. Drum brake; 2. Drive axle housing; 3. First fixing bracket; 4. Second fixing bracket; 5. EPB actuator; 6. Shock absorber; 7. Connector; 8. Projection welding nut;

[0030] 301, main board; 302, extension arm; 303, connecting flange; 3011, first mounting hole; 3012, through hole; 3013, weight reduction hole; 3021, first clamping hole; 31, first wiring harness fixing piece; 41, second wiring harness fixing piece; 401, first board; 402, second board; 4011, second mounting hole; 4012, connecting end face; 4021, second clamping hole; 51, main body; 52, wiring harness; 53, parking cable. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] Embodiment 1

[0036] This embodiment relates to an actuator installation structure, which can ensure the installation reliability of the EPB actuator 5 and also ensure the rationality and safety of the EPB actuator wiring harness direction.

[0037] In terms of overall composition, Figure 1 and Figure 2 As shown, the mounting structure of the actuator of this embodiment includes a first fixing bracket 3 connected to the drum brake 1, and a second fixing bracket 4 provided on the drive axle housing 2. The first fixing bracket 3 is provided with a first mounting portion and a first harness fixing member 31, the first mounting portion is used to mount the main body 51 of the EPB actuator 5, and the second fixing bracket 4 is provided with a second harness fixing member 41. The harness 52 of the EPB actuator 5 can be constrained on the first harness fixing member 31 and the second harness fixing member 41 in sequence.

[0038] At this time, as in the above structure, the first fixing bracket 3 connected to the drum brake 1 and the first mounting portion and the first harness fixture 31 are provided on the first fixing bracket 3, which can not only provide a better fixing point for the EPB actuator 5, but also provide a mounting point for the harness 52 of the EPB actuator 5. The second fixing bracket 4 is provided on the drive axle, so that the second harness fixture 41 on the second fixing bracket 4 also provides a mounting point for the harness 52 of the EPB actuator 5. At the same time, the first harness fixture 31 and the second harness fixture 41 are provided, so that the harness 52 of the EPB actuator 5 is sequentially constrained on the first harness fixture 31 and the second harness fixture 41, thereby ensuring the rationality and safety of the direction of the harness 52 of the EPB actuator 5.

[0039] In detail, combined with Figure 1 and Figure 2As shown, in this embodiment, the installation structure of the actuator is described in detail by taking the application in an unmanned logistics vehicle as an example. Among them, drum brakes 1 are respectively provided at both ends of the drive axle housing 2, and an EPB actuator 5 is fixed on the drum brake 1. The EPB actuator 5 has a main body 51 and a wiring harness 52 connected to the main body 51. The specific structures of the drive axle housing 2, the drum brake 1 and the EPB actuator 5 can all refer to the structures used in unmanned logistics vehicles in the prior art.

[0040] As a preferred implementation, in this embodiment, see Figure 3 Combined with Figure 1 and Figure 2 As shown, the first fixing bracket 3 includes a main plate body 301 connected to the drum brake 1, and an extension arm 302 connected to the main plate body 301. The extension arm 302 extends from the main plate body 301 to a side away from the main plate body 301 and is bent. The first mounting portion is provided on the main plate body 301, and the first harness fixing member 31 is provided on the extension arm 302. The main plate body 301 is provided to provide a layout basis for the mounting point of the EPB actuator 5, and the extension arm 302 is provided to provide a layout basis for the first harness fixing member 31. At this time, the first mounting portion is provided on the main plate body 301, and the first harness clip is provided on the extension arm 302, which is conducive to the layout of the EPB actuator 5 and its harness 52. Moreover, in this embodiment, the main plate body 301 and the extension arm 302 are integrally formed, and its structure is simple and easy to design and implement.

[0041] As a further preferred embodiment, in this embodiment, a connecting flange 303 is also provided on the main plate body 301, and the main plate body 301 is welded to the bottom plate of the drum brake 1 through the connecting flange 303. At this time, the setting of the connecting flange 303 can facilitate the welding connection of the first fixing bracket 3 on the drum brake 1, and the welding connection of the connecting flange 303 to the bottom plate of the drum brake 1 can improve the fixing effect of the first fixing bracket 3 on the drum brake 1, and can also effectively solve the problem that the first fixing bracket 3 cannot be fixed by riveting or screwing due to the compact space of the bottom plate of the drum brake 1, thereby ensuring the stability and reliability of the EPB actuator 5 when the parking brake is in action.

[0042] In this embodiment, the main plate body 301 is roughly rectangular, and a portion of one end of the main plate body 301 is provided with a connecting flange 303, and the other portion is welded and connected to the bottom plate of the drum brake 1. At this time, the end of the main plate body 301 and the connecting flange 303 are both welded and connected to the bottom plate of the drum brake 1, and the fixing effect of the first fixing bracket 3 can also be further improved.

[0043] In this embodiment, continue to refer to Figures 1 to 3As shown, a through hole 3012 is also provided on the main body 301 for the parking cable 53 of the EPB actuator 5 to pass through, and the angle α between the connecting flange 303 and the main body 301 satisfies: 50°≤α≤53°. The through hole 3012 is provided to facilitate the passage of the parking cable 53 of the EPB actuator 5, and the angle between the connecting flange 303 and the main body 301 is limited, which can help ensure that the axial direction of the through hole 3012 is consistent with the axial direction of the end of the actuator parking cable 53, thereby ensuring the installation requirements of the parking cable 53. In specific implementation, the angle α between the connecting flange 303 and the main body 301 can be set to 50°, 50.5°, 51°, 51.5°, 52°, 52.5° or 53°, etc.

[0044] Still viewing Figures 1 to 3 As shown, in this embodiment, the first mounting portion includes a first mounting hole 3011 provided on the main body 301, and the first mounting holes 3011 are three respectively located at the vertices of the triangle. At this time, the three first mounting holes 3011 provide a three-point support structure for the EPB actuator 5, which can ensure the support strength of the EPB actuator 5 during the operation. In specific implementation, one of the three first mounting holes 3011 is preferably set as an oblong hole or as shown in the figure, the edge of the first mounting hole 3011 is notched, so that processing errors can be avoided, making the installation of the EPB actuator 5 more convenient.

[0045] In addition, in this embodiment, a weight-reducing hole 3013 is also provided on the main body 301. The provision of the weight-reducing hole 3013 is not only conducive to the lightweight design of the first fixing bracket 3, but also conducive to avoiding surrounding components. In this embodiment, the weight-reducing hole 3013 is in a trapezoidal shape, and of course it can be set to a circular, elliptical or other shape.

[0046] See also Figure 4 Combined with Figure 1 and Figure 2 As shown, the second fixed bracket 4 of this embodiment includes a U-shaped bracket body, the bracket body has a first plate body 401 and a second plate body 402 arranged relatively, and a connecting plate body connecting the first plate body 401 and the second plate body 402. Among them, the first plate body 401 and the second plate body 402 are both provided with a second mounting portion for mounting the shock absorber 6, and the second wiring harness fixing member 41 is arranged on the connecting plate body. The second fixed bracket 4 adopts a U-shaped bracket body, which can improve the overall structural strength of the second fixed bracket 4 on the one hand, and integrate the mounting point of the shock absorber 6 and the fixing point of the wiring harness 52 on the second fixed bracket 4 on the other hand, thereby reducing the number of parts and components, and also facilitating the arrangement of the second wiring harness clamp.

[0047] In this embodiment, the second fixing bracket 4 is connected to the drive axle housing 2 through the first plate 401 and the second plate 402. The second fixing bracket 4 is connected to the drive axle housing 2 through the first plate 401 and the second plate 402, which can improve the stability of the connection between the second fixing bracket 4 and the drive axle housing 2, and is conducive to ensuring the reliability of the shock absorber installation. In specific implementation, the first plate 401 and the second plate 402 are both welded to the drive axle housing 2 through the connecting end surface 4012, so that the structural strength of the shock absorber 6 installation point can be further guaranteed, and the reliability of the shock absorber 6 installation can be improved.

[0048] Continue to view Figure 4 As shown, the second mounting parts on the first plate 401 and the second plate 402 both include second mounting holes 4011, and the shock absorber 6 is mounted on the second fixing bracket 4 by passing through the connecting lugs of the shock absorber and the connecting members 7 in each second mounting hole 4011. The second mounting part adopts the second mounting hole 4011, which has a simple structure, is easy to process and manufacture, and is also convenient for the installation of the shock absorber 6. In specific implementation, as a preferred embodiment, a projection welding nut 8 is provided on the first plate 401 or the second plate 402, and the axial direction of the projection welding nut 8 is consistent with the axial direction of the second mounting hole 4011. At this time, the connecting lug of the shock absorber 6 is located between the first plate 401 and the second plate 402, and the connecting member 7 passes through the second mounting hole 4011, the connecting lug and is screwed on the projection welding nut 8, so that the shock absorber 6 is mounted on the second fixing bracket 4.

[0049] As a preferred embodiment, in this embodiment, the first harness fixture 31 is snap-connected to the first fixing bracket 3, and the second harness fixture 41 is also snap-connected to the second fixing bracket 4. At this time, the first harness fixture 31 is arranged on the first fixing bracket 3 in a snap-connected manner, which can improve the convenience of installing the first harness fixture 31. The second harness fixture 41 is arranged on the second fixing bracket 4 in a snap-connected manner, which can improve the convenience of installing the second harness fixture 41.

[0050] Specifically, the first harness fixture 31 and the second harness fixture 41 of this embodiment are structurally identical, and both have a clamping joint and a cable tie connected to the clamping joint. In specific implementation, the clamping joints on the first harness fixture 31 and the second harness fixture 41 are respectively inserted into the first clamping hole 3021 on the extension arm 302 and the second clamping hole 4021 on the connecting plate body, and then the harness 52 of the EPB actuator 5 is fastened to the first harness fixture 31 and the second harness fixture 41 by the cable tie.

[0051] The installation structure of the actuator of this embodiment can ensure the installation reliability of the EPB actuator 5 , and can also effectively restrict the direction of the wiring harness 52 of the EPB actuator 5 , thereby ensuring the rationality and safety of the direction of the wiring harness 52 of the EPB actuator 5 .

[0052] Embodiment 2

[0053] This embodiment relates to a vehicle, on which the mounting structure of the actuator of the first embodiment is provided.

[0054] It is worth mentioning that the vehicle in this embodiment can be an unmanned logistics vehicle, or a car, a bus, a truck or other types of vehicles.

[0055] The vehicle of this embodiment can not only ensure the reliability of the installation of the EPB actuator 5 but also ensure the rationality and safety of the wiring harness layout of the EPB actuator 5 by applying the installation structure of the actuator of the first embodiment.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An actuator installation structure, characterized in that: It comprises a first fixing bracket (3) connected to a drum brake (1), and a second fixing bracket (4) arranged on a drive axle housing (2); The first fixing bracket (3) is provided with a first mounting portion and a first wiring harness fixing piece (31), the first mounting portion being used to mount a main body (51) of the EPB actuator (5), and the second fixing bracket (4) is provided with a second wiring harness fixing piece (41); The wire harness (52) of the EPB actuator (5) can be restrained on the first wire harness fixture (31) and the second wire harness fixture (41) in sequence.

2. The actuator installation structure according to claim 1, characterized in that: The first fixing bracket (3) comprises a main plate body (301) connected to the drum brake (1), and an extension arm (302) connected to the main plate body (301), wherein the extension arm (302) extends from the main plate body (301) to a side away from the main plate body (301) and is bent; The first mounting portion is arranged on the main board body (301), and the first wire harness fixing member (31) is arranged on the extension arm (302).

3. The actuator installation structure according to claim 2, characterized in that: The main plate body (301) is provided with a connecting flange (303), and the main plate body (301) is welded to the bottom plate of the drum brake (1) via the connecting flange (303).

4. The actuator installation structure according to claim 3, characterized in that: The main body (301) is provided with a through hole (3012) for the parking cable (53) of the EPB actuator (5) to pass through; The included angle α between the connecting flange (303) and the main board body (301) satisfies: 50°≤α≤53°.

5. The actuator installation structure according to claim 2, characterized in that: The first mounting portion comprises a first mounting hole (3011) provided on the main board (301), wherein the first mounting holes (3011) are three and are respectively located at the vertices of a triangle; and / or, The main board body (301) is provided with a weight-reducing hole (3013).

6. The actuator installation structure according to claim 1, characterized in that: The second fixing bracket (4) comprises a U-shaped bracket body, the bracket body having a first plate body (401) and a second plate body (402) arranged opposite to each other, and a connecting plate body connecting the first plate body (401) and the second plate body (402); The first plate body (401) and the second plate body (402) are both provided with a second mounting portion for mounting a shock absorber (6), and the second wire harness fixing member (41) is provided on the connecting plate body.

7. The actuator mounting structure according to claim 6, characterized in that: The second fixing bracket (4) is connected to the drive axle housing (2) via the first plate body (401) and the second plate body (402).

8. The actuator mounting structure according to claim 6, characterized in that: The second mounting portions on the first plate body (401) and the second plate body (402) both include second mounting holes (4011), and the shock absorber (6) is mounted on the second fixing bracket (4) by passing through the connecting lugs of the shock absorber and the connecting pieces (7) in each of the second mounting holes (4011).

9. The actuator mounting structure according to any one of claims 1 to 8, characterized in that: The first wire harness fixing member (31) is snap-connected to the first fixing bracket (3); and / or the second wire harness fixing member (41) is snap-connected to the second fixing bracket (4).

10. A vehicle, characterized in that: The vehicle is provided with the actuator mounting structure according to any one of claims 1 to 9.

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