A motor assembly

Abstract

This utility model provides a motor assembly, including a motor, a worm gear, a ring sleeve, a wear-resistant pad, a vibration damping pad, a housing, a double gear, an output gear, and a housing cover. The housing is divided into a communicating gear cavity and a worm gear cavity. The motor is laterally connected to the outside of the worm gear cavity of the housing and closes the worm gear cavity. The worm gear is interference-fitted onto the motor shaft of the motor. The motor shaft, along with the worm gear, extends into the worm gear cavity of the housing. The vibration damping pad, the wear-resistant pad, and the ring sleeve are sequentially installed in guide holes on the inner wall of the worm gear cavity of the housing, with the ring sleeve interference-fitted into the housing. The end of the motor shaft extends into the ring sleeve and rotates with the ring sleeve. The end of the motor shaft abuts against the wear-resistant pad, and the wear-resistant pad abuts against the vibration damping pad. This utility model can reduce the noise of the motor during operation and improve passenger comfort.

Description

Technical Field

[0001] This utility model relates to an automotive component, and more particularly to a motor assembly. Background Technology

[0002] With the development of the automotive industry, the demand for power seats is constantly increasing. Especially in high-end models, the configuration rate of power seats is gradually rising, mainly due to the comfort and convenience they offer. Furthermore, emerging markets are also experiencing rapid growth in demand for power seats as car consumption increases, bringing new growth opportunities to the industry.

[0003] Consumers have increasingly higher demands for automotive comfort and functionality, making power seats a popular choice as a key feature for enhancing the driving and riding experience. The backrest adjustment of power seats requires a motor drive; the demand for seat backrest angle adjustment motors is growing. To ensure passenger comfort, reducing motor noise has become a crucial factor in the structural design of the motor assembly. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a motor assembly that reduces motor noise during operation and improves passenger comfort. To achieve the above technical objectives, the technical solution adopted by this utility model is as follows: This utility model embodiment provides a motor assembly, including a motor, a worm gear, a ring sleeve, a wear-resistant pad, a vibration damping pad, a housing, a double gear, an output gear, and a housing cover; The housing is divided into a communicating gear cavity and a worm cavity; The motor is laterally connected to the outside of the worm gear cavity of the housing and closes the worm gear cavity; the worm gear is interference-fitted onto the motor shaft of the motor; the motor shaft of the motor, together with the worm gear, extends into the worm gear cavity of the housing; the vibration damping pad, the wear-resistant pad, and the ring are sequentially installed in the guide holes on the inner wall of the worm gear cavity of the housing, and the ring is interference-fitted with the housing; the end of the motor shaft extends into the ring and rotates with the ring, the end of the motor shaft abuts against the wear-resistant pad, and the wear-resistant pad abuts against the vibration damping pad; A guide shaft and a rotating shaft hole are provided on the inner wall of the gear cavity of the housing away from the housing cover; the double gear includes a first large gear and a first small gear, the double gear is mounted on the guide shaft, and the first large gear of the double gear meshes with the worm; the output gear includes a second large gear and a rotating shaft end and an output end located at both ends of the second large gear, the rotating shaft end of the output gear is mounted in the rotating shaft hole of the housing, and the second large gear of the output gear meshes with the first small gear of the double gear; The cover is connected to the housing and seals the gear cavity; the cover has an output hole, and the output end of the output gear is assembled in the output hole of the cover.

[0005] Furthermore, the ring sleeve uses a plastic bearing.

[0006] Furthermore, the vibration damping pad has a central hole, and the wear-resistant pad includes a disc body with an outward protrusion on one side. The outward protrusion on one side of the wear-resistant pad disc body extends into the central hole of the vibration damping pad.

[0007] Furthermore, a cylindrical part is provided on the other side of the wear-resistant pad body; the cylindrical part on the other side of the wear-resistant pad body extends into the ring sleeve.

[0008] Furthermore, a first oil reservoir is provided around the bottom of the guide shaft inside the housing, and a first line contact portion is formed around the first oil reservoir.

[0009] Furthermore, a second oil reservoir is provided around the upper edge of the shaft hole inside the housing, and a second line contact portion is formed around the second oil reservoir.

[0010] Furthermore, the output end of the output gear is provided with a spline groove.

[0011] Furthermore, the housing is provided with buckles and screw holes, and the cover is provided with slots and screw holes. The cover and the housing are connected by buckles and slots and screws.

[0012] Furthermore, the engagement positions of the buckle and the slot are located at the two end corners on the side of the housing cover near the output gear; and the two end corners do not exceed the area enclosed by the lateral boundary and the longitudinal boundary of the housing cover.

[0013] Furthermore, the shell cover is symmetrical from left to right.

[0014] The beneficial effects of the technical solution provided by this utility model embodiment are: this utility model can significantly reduce operating noise and improve passenger comfort; it can also provide sufficient output torque; and it is flexible in installation and suitable for different left and right seats. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the motor assembly structure in an embodiment of the present utility model.

[0016] Figure 2 This is an assembly diagram of the ring, wear-resistant pad, and vibration damping pad in the embodiments of this utility model.

[0017] Figure 3 This is a schematic diagram of the oil storage tank in an embodiment of the present utility model.

[0018] Figure 4a This is a schematic diagram of the first oil storage tank and the first line contact portion in an embodiment of the present invention.

[0019] Figure 4b This is a schematic diagram of the second oil storage tank and the second line contact portion in an embodiment of this utility model.

[0020] Figure 5This is a schematic diagram showing the engagement position of the buckle and the slot in an embodiment of this utility model.

[0021] Figure 6 This is a schematic diagram showing the left and right symmetry of the shell cover in an embodiment of this utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] like Figure 1 , Figure 2 As shown, this utility model embodiment proposes a motor assembly, including a motor 1, a worm gear 3, a ring sleeve 4, a wear-resistant pad 5, a vibration damping pad 6, a housing 7, a double gear 8, an output gear 9, and a housing cover 10; The housing 7 is divided into a communicating gear cavity and a worm cavity; Motor 1 is laterally connected to the outside of the worm cavity of housing 7 and closes the worm cavity; worm 3 is interference-fitted onto the motor shaft of motor 1; the motor shaft of motor 1, together with worm 3, extends into the worm cavity of housing 7; vibration damping pad 6, wear-resistant pad 5, and ring sleeve 4 are sequentially installed in the guide hole on the inner wall of the worm cavity of housing 7, and ring sleeve 4 is interference-fitted with housing 7; the end of motor shaft of motor 1 extends into ring sleeve 4 and rotates with ring sleeve 4, the end of motor shaft of motor 1 abuts against wear-resistant pad 5, and wear-resistant pad 5 abuts against vibration damping pad 6; A guide shaft 701 and a rotating shaft hole 702 are provided on the inner wall of the gear cavity of the housing 7 on the side opposite to the cover 10; the double gear 8 includes a first large gear 801 and a first small gear 802, the double gear 8 is mounted on the guide shaft 701, and the first large gear 801 of the double gear 8 meshes with the worm 3; the output gear 9 includes a second large gear 901 and rotating shaft ends (not shown in the figure) and output ends 902 located at both ends of the second large gear 901, the rotating shaft ends of the output gear 9 are mounted in the rotating shaft hole 702 of the housing 7, and the second large gear 901 of the output gear 9 meshes with the first small gear 802 of the double gear 8; The cover 10 is connected to the housing 7 and closes the gear cavity; the cover 10 is provided with an output hole 1001, and the output end 902 of the output gear 9 is assembled in the output hole 1001 of the cover 10.

[0024] In the motor assembly proposed in this embodiment, the ring 4 uses a plastic bearing (plastic bearings do not contain balls), which provides load for the motor shaft of motor 1 and can eliminate the vibration when the motor shaft rotates; the end of the motor shaft of motor 1 contacts the wear-resistant pad 5, and the wear-resistant pad 5 contacts the vibration damping pad 6. The vibration damping pad 6 can be a rubber vibration damping pad, which uses the elasticity of rubber to absorb the axial clearance (referring to manufacturing tolerances and assembly errors), ensuring stable meshing between the worm gear 3 and the first large gear 801 of the double gear 8, and reducing the noise during rotation.

[0025] More preferably, the vibration damping pad 6 has a central hole, and the wear-resistant pad 5 includes a disc body with an outward protrusion on one side. The outward protrusion on one side of the disc body of the wear-resistant pad 5 extends into the central hole of the vibration damping pad 6 to improve the reliability of the assembly of the two.

[0026] More preferably, a cylindrical part is provided on the other side of the wear-resistant pad 5 disc body; the cylindrical part on the other side of the wear-resistant pad 5 disc body extends into the ring sleeve 4, which can improve the assembly reliability of the wear-resistant pad 5 and the ring sleeve 4, and the hollow cylindrical part can reduce the friction with the end of the motor shaft of the motor 1.

[0027] Even better, such as Figure 3 , Figure 4a As shown, a first oil reservoir 703 is provided around the bottom of the guide shaft 701 inside the housing 7, and a first line contact portion 704 is formed around the first oil reservoir 703; the first oil reservoir 703 can store lubricating grease to ensure smooth rotation of the double gear 8; at the same time, the double gear 8 and the first line contact portion 704 are in line contact, which can reduce rotational noise.

[0028] Even better, such as Figure 3 , Figure 4b As shown, a second oil reservoir 705 is provided around the upper edge of the shaft hole 702 inside the housing 7, and a second line contact portion 706 is formed around the second oil reservoir 705; the second oil reservoir 705 can store lubricating grease to ensure smooth rotation of the output gear 9; at the same time, the output gear 9 and the second line contact portion 706 are in line contact, which can reduce rotational noise.

[0029] Furthermore, such as Figure 1 As shown, the output end 902 of the output gear 9 is provided with a spline groove so as to cooperate with the output shaft with splines.

[0030] Furthermore, such as Figure 1 As shown, the housing 7 is provided with a buckle 707 and a screw hole, and the cover 10 is provided with a slot 1002 and a screw hole. The cover 10 and the housing 7 are connected by the buckle 707 engaging with the slot 1002 and by the screw 2.

[0031] Even better, such as Figure 5As shown, the engagement position of the buckle 707 and the slot 1002 is located at the two end corners 1003 on the side of the housing cover 10 near the output gear 9; and the two end corners 1003 do not exceed the area 1004 enclosed by the lateral boundary and the longitudinal boundary of the housing cover 10; so that the motor assembly can save installation space.

[0032] In this embodiment, the bottom surface of the screw 2 end cap is provided with serrations 201 to prevent the screw 2 from slipping.

[0033] Even better, such as Figure 6 As shown, the cover 10 is symmetrical on both sides so that the motor assemblies for the driver's seat and the passenger seat can use the same cover 10.

[0034] Specifically, the motor 1 is connected to the outside of the worm chamber of the housing 7 by screws 2.

[0035] The worm gear 3 and the first large gear 801 of the double gear 8 form the first stage reduction mechanism, and the first small gear 802 of the double gear 8 and the second large gear 901 of the output gear 9 form the second stage reduction mechanism. Therefore, the motor assembly can output sufficient torque.

[0036] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A motor assembly, characterized in that, Includes motor (1), worm gear (3), ring sleeve (4), wear-resistant pad (5), vibration damping pad (6), housing (7), double gear (8), output gear (9), and housing cover (10); The housing (7) is divided into a communicating gear cavity and a worm cavity; The motor (1) is laterally connected to the outside of the worm cavity of the housing (7) and closes the worm cavity; the worm (3) is interference-fitted onto the motor shaft of the motor (1); the motor shaft of the motor (1) together with the worm (3) extends into the worm cavity of the housing (7); the damping pad (6), the wear-resistant pad (5) and the ring (4) are installed in the guide hole on the inner wall of the worm cavity of the housing (7) in sequence, and the ring (4) is interference-fitted with the housing (7); the end of the motor shaft of the motor (1) extends into the ring (4) and rotates with the ring (4); the end of the motor shaft of the motor (1) abuts against the wear-resistant pad (5), and the wear-resistant pad (5) abuts against the damping pad (6); A guide shaft (701) and a rotating shaft hole (702) are provided on the inner wall of the gear cavity of the housing (7) away from the cover (10); the double gear (8) includes a first large gear (801) and a first small gear (802), the double gear (8) is mounted on the guide shaft (701), and the first large gear (801) of the double gear (8) meshes with the worm (3); the output gear (9) includes a second large gear (901) and a rotating shaft end and an output end (902) located at both ends of the second large gear (901), the rotating shaft end of the output gear (9) is mounted in the rotating shaft hole (702) of the housing (7), and the second large gear (901) of the output gear (9) meshes with the first small gear (802) of the double gear (8); The cover (10) is connected to the housing (7) and closes the gear cavity; the cover (10) is provided with an output hole (1001), and the output end (902) of the output gear (9) is assembled in the output hole (1001) of the cover (10).

2. The motor assembly as described in claim 1, characterized in that, The ring sleeve (4) uses a plastic bearing.

3. The motor assembly as described in claim 1, characterized in that, The vibration damping pad (6) has a central hole, and the wear-resistant pad (5) includes a disc body. One side of the disc body has an outward protrusion, and the outward protrusion on one side of the disc body of the wear-resistant pad (5) extends into the central hole of the vibration damping pad (6).

4. The motor assembly as described in claim 3, characterized in that, The wear-resistant pad (5) has a cylindrical part on the other side of the disc body; the cylindrical part on the other side of the wear-resistant pad (5) extends into the ring (4).

5. The motor assembly as claimed in claim 1, characterized in that, A first oil reservoir (703) is provided around the bottom of the guide shaft (701) inside the housing (7), and a first line contact portion (704) is formed around the first oil reservoir (703).

6. The motor assembly as claimed in claim 1, characterized in that, A second oil reservoir (705) is provided around the upper edge of the shaft hole (702) inside the housing (7), and a second line contact portion (706) is formed around the second oil reservoir (705).

7. The motor assembly as claimed in claim 1, characterized in that, The output end (902) of the output gear (9) is provided with a spline groove.

8. The motor assembly as claimed in claim 1, characterized in that, The housing (7) is provided with a buckle (707) and a screw hole, and the cover (10) is provided with a slot (1002) and a screw hole. The cover (10) and the housing (7) are connected by the buckle (707) engaging with the slot (1002) and by the screw (2).

9. The motor assembly as claimed in claim 1, characterized in that, The engagement position of the buckle (707) and the slot (1002) is located at the two end corners (1003) on the side of the cover (10) near the output gear (9); and the two end corners (1003) do not exceed the area (1004) enclosed by the lateral boundary and the longitudinal boundary of the cover (10).

10. The motor assembly as claimed in claim 1, characterized in that, The shell cover (10) is symmetrical on both sides.

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