Low-noise gear shifting executing mechanism shell assembly

Abstract

The utility model discloses a low-noise gear shifting executing mechanism shell assembly which comprises an executing mechanism shell and an upper cover and further comprises a supporting and restraining structure. The supporting and restraining structure comprises a plurality of supporting columns, and the top ends of the supporting columns are connected with the upper cover. The supporting constraint structure further comprises a constraint damping layer, the constraint damping layer comprises a damping layer and a constraint layer which are attached, and the damping layer is installed on the upper cover. And a plurality of radiating fins are arranged on the upper cover in one direction. The low-noise gear shifting executing mechanism shell assembly is simple in structure and easy to disassemble and assemble, can provide good supporting and restraining for the upper cover, and enables the rigidity of the upper cover to be greatly improved and vibration deformation and radiation noise to be effectively reduced on the premise that the mass amplification is small. The heat dissipation capability of the power assembly can be improved; sundries can be effectively prevented from being accumulated on the surface of the upper cover, and corrosion and rust are prevented; a constraint damping layer is laid on the inner wall of the upper cover, and vibration energy generated by working of the power assembly can be further attenuated.

Description

Technical Field

[0001] The utility model relates to the technical field of transmissions, in particular to a low-noise gear shift actuator housing assembly. Background Art

[0002] With the rapid development of AMT and new energy commercial vehicle technology, the integration, automation and intelligence of parts are getting higher and higher, which greatly improves the user's driving experience. The automatic shift system consists of a control circuit, a controller, an actuator unit, and a shift actuator housing assembly, and is connected to the powertrain through the shift actuator housing. The overall structure is compact and highly integrated. Since the control circuit and controller have high requirements for waterproof and dustproof use, an upper cover is generally designed on the top of the shift actuator housing. The upper cover does not directly bear a large load, and is often designed as a thin-walled structure with a small thickness from a lightweight perspective, which will cause its overall modal to be low. When the powertrain is working, resonance occurs, which increases the radiated noise of the powertrain, seriously affecting the comfort of drivers and passengers and the market competitiveness of the product, especially for new energy vehicles without engine noise masking. Such problems are more prominent.

[0003] At present, the common solution to the above problems is to optimize the topology, thicken or reinforce the upper cover. The invention patent with application number 201810689260.2 discloses a motor controller upper cover, a motor controller, a drive assembly and a vehicle, characterized in that the surface of the cover body is provided with a plurality of reinforcement points, and the plurality of reinforcement points are distributed in multiple rows and columns, and the reinforcement points of M rows * N columns form a basic unit, and the basic unit includes at least one quadrilateral, and between the two reinforcement points distributed diagonally in the four reinforcement points at the vertices of the quadrilateral, a diagonal reinforcement rib extending from one of the reinforcement points to the other reinforcement point is provided, and one of the two diagonal reinforcement ribs corresponding to each quadrilateral at least extends to the position where it intersects with the other diagonal reinforcement rib, and M and N are both positive integers, and satisfy: M≥2, N≥2. The multiple diagonal reinforcement ribs set on the surface of the cover body in this patent are in a cross shape, which will affect the air circulation on its surface, reduce the heat dissipation efficiency, and the reinforcement has limited effect on improving the stiffness. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a low-noise shift actuator housing assembly to solve the technical problems of insufficient rigidity, high noise and poor heat dissipation of the shift actuator housing assembly in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions to achieve the above problems: a low-noise shift actuator housing assembly, including an actuator housing and an upper cover covering the actuator housing, and also including a supporting and restraining structure installed between the actuator housing and the upper cover;

[0006] The support and restraint structure comprises a plurality of support columns installed on the side of the actuator housing facing the upper cover, and the top ends of the support columns are connected to the upper cover;

[0007] The support and constraint structure further comprises a constraint damping layer installed on the inner wall of the upper cover facing the actuator housing, wherein the constraint damping layer comprises a damping layer and a constraint layer in contact with each other, wherein the damping layer is installed on the upper cover;

[0008] A plurality of heat dissipation fins are also unidirectionally arranged on the upper surface of the upper cover.

[0009] The utility model also has the following technical features:

[0010] The top end of the support column is provided with a first through hole and a threaded hole downwardly along the axis, and a first sealing gasket is installed in the first through hole.

[0011] The upper cover is provided with a second through hole coaxial with the threaded hole on the support column, the constrained damping layer is provided with a third through hole coaxial with the threaded hole on the support column, and a second sealing gasket is arranged on the second through hole;

[0012] The upper cover and the support column are fixedly connected by anti-loosening bolts, and the anti-loosening bolts pass through the second sealing gasket, the first through hole on the upper cover, the first sealing gasket and the threaded hole in sequence;

[0013] The support column comprises a first support column, a second support column, a third support column, a fourth support column and a fifth support column installed on the side of the actuator housing facing the upper cover;

[0014] The first support column is installed at the geometric center of the actuator housing;

[0015] The second support column and the third support column are installed in the diagonal direction of the actuator housing;

[0016] The fourth support column and the fifth support column are installed in another diagonal direction of the actuator housing.

[0017] The upper surface of the upper cover is also provided with a bolt mounting boss coaxial with the first through hole;

[0018] The constrained damping layer is installed on the inner wall of the upper cover on the side facing the actuator housing by gluing;

[0019] The damping layer and the constraint layer are connected by vulcanization.

[0020] Oblique tie bars are also installed between the support column and the actuator housing.

[0021] Compared with the prior art, the utility model has the following technical effects:

[0022] (I) The utility model provides a low-noise shift actuator housing assembly, in which a plurality of support columns are provided between the upper cover and the actuator housing, and the upper cover is connected to the support columns, which has a simple structure and is easy to disassemble and assemble, and can provide good support and constraint for the upper cover. Under the premise of a small mass increase, the rigidity of the upper cover is greatly improved, and vibration deformation and radiation noise are effectively reduced;

[0023] The upper surface of the upper cover is provided with a number of heat dissipation fins in one direction, which can further increase the rigidity of the upper cover and improve the heat dissipation capacity of the powertrain compared to the cross-type fins; in addition, it can effectively prevent the accumulation of debris on the surface of the upper cover and prevent corrosion and rust;

[0024] The inner wall of the upper cover is provided with a constrained damping layer, which can further attenuate the vibration energy generated by the operation of the powertrain.

[0025] (II) The number and position of the support columns of the low-noise gear shift actuator housing assembly provided by the utility model can be adjusted at will according to the vibration mode that has a greater impact on noise.

[0026] (IV) The low-noise shift actuator housing assembly provided by the utility model has a simple structure, convenient operation, safety and reliability, and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0028] Figure 2 It is a top view schematic diagram of the utility model.

[0029] Figure 3 for Figure 2 Schematic diagram of the cross-section along the AA direction.

[0030] Figure 4 Schematic diagram of the cross-section of the actuator housing.

[0031] Figure 5 Schematic diagram of the constrained damping layer structure.

[0032] Figure 6 It is a schematic diagram of the structure of the actuator housing from a top view.

[0033] Figure 7 Schematic diagram of the upper cover structure.

[0034] The meaning of each symbol in the accompanying drawings:

[0035] 1-actuator housing, 2-upper cover, 3-support and constraint structure, 4-heat dissipation fins, 5-first sealing gasket, 6-second sealing gasket, 7-anti-loosening bolts, 8-inclined tie bars, 9-controller assembly.

[0036] 2-1 second through hole, 2-2 mounting boss.

[0037] 3-1 support column, 3-2 constrained damping layer, 3-3 first through hole, 3-4 threaded hole.

[0038] 3-1-1 is the first support column, 3-1-2 is the second support column, 3-1-3 is the third support column, 3-1-4 is the fourth support column, and 3-1-5 is the fifth support column.

[0039] 3-2-1 damping layer, 3-2-2 constraint layer.

[0040] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0041] All components in the present invention, unless otherwise specified, are components known in the prior art.

[0042] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0043] Example:

[0044] This embodiment provides a low-noise shift actuator housing assembly, such as Figure 1 , 6 As shown in FIG. 7 , it includes an actuator housing 1 and an upper cover 2 covering the actuator housing 1 , and also includes a support and restraint structure 3 installed between the actuator housing 1 and the upper cover 2 ;

[0045] The support and restraint structure 3 includes a plurality of support columns 3-1 installed on the side of the actuator housing 1 facing the upper cover 2, and the top ends of the support columns 3-1 are connected to the upper cover 2;

[0046] By setting a plurality of support columns 3-1, and connecting the upper cover 2 and the support columns 3-1 by anti-loosening bolts, the structure is simple and easy to disassemble and assemble, and can provide good support and constraint for the upper cover 2. Under the premise of small mass increase, the rigidity of the upper cover 2 is greatly improved, and the vibration deformation and radiation noise are effectively reduced;

[0047] The support and constraint structure 3 further includes a constraint damping layer 3-2 installed on the inner wall of the upper cover 2 facing the actuator housing 1, and the constraint damping layer 3-2 includes a bonded damping layer 3-2-1 and a constraint layer 3-2-2, wherein the damping layer 3-2-1 is installed on the upper cover 2;

[0048] like Figure 3 As shown, the constrained damping layer 3 - 2 is installed on the inner wall surface of the upper cover 2 by gluing, so as to further attenuate the vibration energy of the upper cover 2 .

[0049] A plurality of heat dissipation fins 4 are also unidirectionally arranged on the upper surface of the upper cover 2 .

[0050] The upper surface of the upper cover 2 is unidirectionally provided with a plurality of heat dissipation fins 4, which further increase the rigidity of the upper cover 2 and improve the heat dissipation capacity of the power assembly; in addition, it can also effectively prevent the accumulation of debris on the surface of the upper cover 2, and prevent corrosion and rust.

[0051] As a preferred embodiment of this invention:

[0052] like Figure 2-Figure 4 As shown, the top end of the support column 3-1 is provided with a first through hole 3-3 and a threaded hole 3-4 downwardly along the axis, and a first sealing gasket 5 is installed in the first through hole 3-3;

[0053] The upper cover 2 is provided with a second through hole 2-1 coaxial with the threaded hole 3-4 on the support column 3-1, the constrained damping layer 3-2 is provided with a third through hole 3-2-3 coaxial with the threaded hole 3-4 on the support column 3-1, and the second through hole 2-1 is provided with a second sealing gasket 6;

[0054] The upper cover 2 is fixedly connected to the support column 3-1 by means of anti-loosening bolts 7, and the anti-loosening bolts 7 pass through the second sealing gasket 6, the first through hole 3-3 on the upper cover 2, the first sealing gasket 5 and the threaded hole 3-4 in sequence;

[0055] The cross-section of the first sealing gasket 5 and the second sealing gasket 6 is "T-shaped", the inner hole of the first sealing gasket 5 is slightly larger than the inner diameter of the threaded hole 3-4, and is installed in the second through hole 2-1 on the support column 3-1; the inner hole of the second sealing gasket 6 is slightly larger than the outer diameter of the anti-loosening bolt 7.

[0056] The supporting and restraining effect of the actuator housing 1 on the upper cover 2 is achieved by the anti-loosening bolt 7 passing through the second sealing gasket 6, the first through hole 3-3 on the upper cover 2, the first sealing gasket 5 from top to bottom, and connecting with the threaded hole 3-4. The rigidity of the upper cover 2 is improved by adding supporting points, which does not affect the original structure, has a small mass increase, and can effectively reduce vibration response and radiation noise.

[0057] As a preferred embodiment of this invention:

[0058] The support column 3-1 includes a first support column 3-1-1, a second support column 3-1-2, a third support column 3-1-3, a fourth support column 3-1-4 and a fifth support column 3-1-5 installed on the side of the actuator housing 1 facing the upper cover 2;

[0059] In this embodiment, the first support column 3-1-1 is installed at the geometric center of the actuator housing 1;

[0060] In this embodiment, the second support column 3-1-2 and the third support column 3-1-3 are installed at 1 / 4 and 3 / 4 of the actuator housing 1 in the diagonal direction;

[0061] The fourth support column 3 - 1 - 4 and the fifth support column 3 - 1 - 5 are installed at 1 / 4 and 3 / 4 of the other diagonal direction of the actuator housing 1 .

[0062] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, five vertical support columns 3-1 are arranged above the actuator housing 1, including a first support column 3-1-1, a second support column 3-1-2, a third support column 3-1-3, a fourth support column 3-1-4 and a fifth support column 3-1-5;

[0063] The first support column 3-1-1 corresponds to the exact center position of the upper cover 2, the second support column 3-1-2, the third support column 3-1-3, the fourth support column 3-1-4 and the fifth support column 3-1-5 correspond to the 1 / 4 and 3 / 4 positions on the two diagonal lines of the upper cover 2 respectively, and are mainly used to constrain the 1st and 2nd order modal vibration shapes of the upper cover 2; the number and position of the support columns 3-1 can be adjusted at will according to the vibration shape that has a greater impact on noise.

[0064] As a preferred embodiment of this invention:

[0065] A bolt mounting boss 2-2 coaxial with the second through hole 2-1 is also provided on the upper surface of the upper cover 2; in order to prevent rainwater, oil and other debris from leaking into the actuator housing 1 through the anti-loosening bolt 7, a bolt mounting boss 2-2 coaxial with the second through hole 2-1 is provided on the upper surface of the upper cover 2.

[0066] like Figure 5 As shown, the damping layer 3-2-1 and the constrained layer 3-2-2 are connected by vulcanization, and the constrained damping layer 3-2 is installed on the inner wall of the upper cover 2 facing the actuator housing 1 by gluing;

[0067] In this embodiment, the damping layer 3-2-1 may be made of rubber material, and the constraint layer 3-2-2 may be made of a steel plate;

[0068] An oblique tie bar 8 is also installed between the support column 3-1 and the actuator housing. An oblique tie bar 8 is arranged around the support column 3-1 to ensure the support stiffness of the support column 3-1;

[0069] The specific working process of this embodiment is as follows:

[0070] The supporting and restraining effect of the actuator housing 1 on the upper cover 2 is achieved by the anti-loosening bolt 7 passing through the second sealing gasket 6, the first through hole 3-3 on the upper cover 2, the first sealing gasket 5 from top to bottom in sequence, and connecting with the threaded hole 3-4.

[0071] The rigidity of the upper cover 2 is improved by adding supporting points, which does not affect the original structure, has a small mass increase, and can effectively reduce vibration response and radiation noise.

[0072] The constrained damping layer 3-2 is installed on the inner wall surface of the upper cover 2 by gluing to further attenuate the vibration energy of the upper cover 2;

[0073] When the powertrain is working, a controller assembly 9 will be installed on the actuator housing 1. The support column 3-1 and the constrained damping layer 4 designed in the utility model do not affect the installation and use of the original structure of the shift actuator assembly such as the controller assembly 9, and can solve the shortcomings of the prior art.

[0074] The above technical solutions are only preferred specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present utility model without creative work are all covered within the protection scope of the present utility model.

Claims

1. A low-noise shift actuator housing assembly, comprising an actuator housing (1) and an upper cover (2) covering the actuator housing (1), characterized in that: It also includes a support and restraint structure (3) installed between the actuator housing (1) and the upper cover (2); The support and restraint structure (3) comprises a plurality of support columns (3-1) mounted on the side of the actuator housing (1) facing the upper cover (2), and the top ends of the support columns (3-1) are connected to the upper cover (2); The support and constraint structure (3) further comprises a constraint damping layer (3-2) mounted on the inner wall of the upper cover (2) on the side facing the actuator housing (1), the constraint damping layer (3-2) comprising a damping layer (3-2-1) and a constraint layer (3-2-2) that are bonded together, wherein the damping layer (3-2-1) is mounted on the upper cover (2); A plurality of heat dissipation fins (4) are also unidirectionally arranged on the upper surface of the upper cover (2).

2. The low noise shift actuator housing assembly according to claim 1, characterized in that: The top end of the support column (3-1) is provided with a first through hole (3-3) and a threaded hole (3-4) downwardly along the axis, and a first sealing gasket (5) is installed in the first through hole (3-3); The upper cover (2) is provided with a second through hole (2-1) coaxial with the threaded hole (3-4) on the support column (3-1); the constrained damping layer (3-2) is provided with a third through hole (3-2-3) coaxial with the threaded hole (3-4) on the support column (3-1); and a second sealing gasket (6) is arranged on the second through hole (2-1); The upper cover (2) and the support column (3-1) are fixedly connected by anti-loosening bolts (7), and the anti-loosening bolts (7) pass through the second sealing gasket (6), the first through hole (3-3) on the upper cover (2), the first sealing gasket (5) and the threaded hole (3-4) in sequence to be connected.

3. The low noise shift actuator housing assembly according to claim 2, characterized in that: The support column (3-1) comprises a first support column (3-1-1), a second support column (3-1-2), a third support column (3-1-3), a fourth support column (3-1-4) and a fifth support column (3-1-5) which are installed on the side of the actuator housing (1) facing the upper cover (2); The first support column (3-1-1) is installed at the geometric center position of the actuator housing (1); The second support column (3-1-2) and the third support column (3-1-3) are installed in the diagonal direction of the actuator housing (1); The fourth support column (3-1-4) and the fifth support column (3-1-5) are installed in another diagonal direction of the actuator housing (1).

4. The low noise shift actuator housing assembly according to claim 2, characterized in that: A bolt mounting boss (2-2) coaxial with the first through hole (3-3) is also provided on the upper surface of the upper cover (2); The constrained damping layer (3-2) is installed on the inner wall of the upper cover (2) facing the actuator housing (1) by gluing; The damping layer (3-2-1) and the constraint layer (3-2-2) are connected by vulcanization.

5. The low noise shift actuator housing assembly according to claim 1, characterized in that: An oblique tie bar (8) is also installed between the support column (3-1) and the actuator housing.

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