Motor assembly of vehicle door driving mechanism
By integrating the Hall signal assembly and wiring harness connector inside the motor, and connecting the worm gear and shaft as a single unit, the problems of water ingress and numerous components in the Hall signal assembly are solved, achieving waterproofing and cost reduction.
Patent Information
- Application Number
- CN202423158471.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing Hall signal components of the motor are external and prone to water ingress, which can lead to signal errors. In addition, the connection between the shaft and the worm gear requires additional components, increasing costs.
The Hall signal components are placed inside the motor, and the wiring harness connector is integrated into the end cover. At the same time, the worm gear and the shaft are connected as a single piece, which avoids water ingress and the addition of parts.
It achieves excellent waterproof performance, avoids voltage drop problems caused by Hall signal errors and excessive current, and simplifies the structure and reduces costs.
Smart Images
Figure CN223798064U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of electric motors, and specifically relates to a motor assembly for a car door drive mechanism. Background Technology
[0002] Conventional motors are connected to connectors via soldered wire harnesses, which poses a risk of water ingress. Furthermore, the externally connected Hall effect circuit board of the motor is susceptible to water ingress at the connection point, potentially causing misalignment between the circuit board and the Hall effect magnetic ring, leading to incorrect Hall effect signals. Additionally, the connection of the Hall effect board to the connector via wire harnesses can result in excessive voltage drop when the current is too high.
[0003] In addition, the motor shaft and worm gear are connected in a disconnected manner. This connection method requires the addition of components such as bearings, snap rings, and buffer sleeves, resulting in more parts and higher costs. Utility Model Content
[0004] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the prior art by providing a motor assembly for a door drive mechanism. The motor assembly for the door drive mechanism places the Hall signal component inside the motor and integrates the wiring harness connector on the end cover, effectively avoiding the problem of water ingress.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] A motor assembly for a vehicle door drive mechanism includes a housing, an end cover, a connector, and a Hall signal assembly. The housing and the end cover are connected to form a closed structure. A rotor and a rotating shaft are disposed inside the housing. The rotor drives the rotating shaft to rotate. The rotating shaft is arranged along the length of the housing and extends through the end cover to the outside. The Hall signal assembly includes a Hall magnetic ring and a Hall plate. Both the Hall magnetic ring and the Hall plate are disposed inside the end cover. The Hall magnetic ring is fixedly sleeved on the rotating shaft, and the Hall plate is fixed on the end cover. The connector includes a plug and a pin. The plug is fixed on the end cover and is an integral structure with the end cover. One end of the pin is connected to the Hall plate, and the other end extends from the plug.
[0007] Preferably, a worm gear is fitted onto the portion of the motor shaft that extends to the outside.
[0008] Preferably, the end cap includes an insertion part, a connecting part, and a first positioning part. The diameter of the connecting part is larger than the diameter of the housing. When the housing is connected to the end cap, the inner end face of the connecting part abuts against the outer end face of the housing. The insertion part is disposed on the inner end face of the connecting part, and the outer diameter of the insertion part is the same as the inner diameter of the housing, for insertion into the housing. The first positioning part is disposed on the outer end face of the connecting part, and the first positioning part is a cylindrical structure centered on the central axis of the rotating shaft.
[0009] Preferably, the end cap further includes a second positioning part, which is disposed on the outer end face of the first positioning part. The second positioning part is a cylindrical structure centered on the central axis of the rotating shaft, and the diameter of the second positioning part is smaller than the diameter of the first positioning part.
[0010] Preferably, at least one anti-rotation post is provided on the outer end face of the first positioning part.
[0011] Preferably, the first positioning part is provided with two anti-rotation posts, and the two anti-rotation posts are symmetrically arranged along the central axis of the rotating shaft.
[0012] Preferably, a first sealing groove is provided on the side wall of the first positioning part, and a first sealing ring is installed in the first sealing groove.
[0013] Preferably, a second sealing groove is provided on the side wall of the insertion part, and a second sealing ring is installed in the second sealing groove.
[0014] Preferably, the connector surface of the plug is provided with a mis-proof protrusion to ensure accurate connection when connected to a counterpart wire harness connector.
[0015] Preferably, the connector surface of the plug is further provided with a thrust block for locking when connected to the other wire harness connector.
[0016] The motor assembly of the door drive mechanism in this invention houses the Hall signal component inside the motor and integrates the wiring harness connector on the end cover. This effectively avoids water ingress issues caused by soldering the wiring harness and externally placing the Hall signal component, providing excellent waterproof performance. Furthermore, the Hall plate is connected to the connector via pins, preventing excessive voltage drop when the current is too high. In addition, the worm gear and motor shaft are integrated, eliminating the need for additional accessories and avoiding the problems of numerous parts and high costs. Attached Figure Description
[0017] Figure 1 This is a front view of the motor assembly of the door drive mechanism in Embodiment 1 of this utility model;
[0018] Figure 2This is a cross-sectional view of the motor assembly of the door drive mechanism in Embodiment 1 of this utility model;
[0019] Figure 3 This is a side view of the motor assembly of the door drive mechanism in Embodiment 1 of this utility model.
[0020] In the diagram: 100-Housing, 200-End cap, 210-Connecting part, 220-Insertion part, 230-First positioning part, 240-Second positioning part, 250-Mounting hole, 260-Anti-rotation post, 270-First sealing groove, 280-Second sealing ring, 300-Hall plate, 400-Hall magnetic ring, 500-Rotating shaft, 510-Rotor, 600-Worm, 700-Plug, 710-Pin, 720-Anti-misalignment boss, 730-Thrust block. Detailed Implementation
[0021] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] This utility model provides a motor assembly for a vehicle door drive mechanism, including a housing, an end cover, a connector, and a Hall signal assembly. The housing and the end cover are connected to form a closed structure. A rotor and a rotating shaft are provided inside the housing. The rotor is used to drive the rotating shaft to rotate. The rotating shaft is arranged along the length direction of the housing and extends through the end cover to the outside. The Hall signal assembly includes a Hall magnetic ring and a Hall plate. Both the Hall magnetic ring and the Hall plate are disposed inside the end cover. The Hall magnetic ring is fixedly sleeved on the rotating shaft, and the Hall plate is fixed on the end cover. The connector includes a plug and a pin. The plug is fixed on the end cover and is an integral structure with the end cover. One end of the pin is connected to the Hall plate, and the other end extends from the plug.
[0026] Example 1
[0027] like Figure 1-3 As shown, this embodiment discloses a motor assembly for a vehicle door drive mechanism, including a housing 100, an end cap 200, a connector, and a Hall effect signal assembly. The end cap 200 is inserted into the housing 100 to form a closed structure. Inside the housing 100, there is a rotor 510 and a rotating shaft 500. The rotating shaft 500 is mounted on the rotor 510, and the rotor 510 is used to drive the rotating shaft 500 to rotate. The rotating shaft 500 is arranged along the length direction of the housing 100, and one end of the rotating shaft 500 passes through the end cap 200 and extends to the outside.
[0028] The Hall signal assembly includes a Hall magnetic ring 400 and a Hall plate 300, both of which are disposed inside the end cover 200. The Hall magnetic ring 400 is fixedly sleeved on the rotating shaft 500, and rotation of the rotating shaft 500 can drive the Hall magnetic ring 400 to rotate synchronously. The Hall plate 300 is fixed on the end cover 200 and does not rotate with the rotating shaft 500.
[0029] The connector includes a plug 700 and pins 710. The plug 700 is fixed to the end cover 200 and is an integral part of the end cover 200. One end of the pin 710 is soldered directly to the Hall plate 300, and the other end extends from the plug 700. The Hall magnetic ring 400 has several pairs of N and S magnetic fields inside. After rotation, the magnetic field passes through the Hall plate 300 and generates a pulse signal. This pulse signal can be used to control the rotation direction, speed, and position of the motor. The Hall plate 300 is connected to an external control device through the pins 710. The external control device receives the pulse signal generated by the Hall plate 300 and controls the rotation direction, speed, and position of the motor.
[0030] Furthermore, the Hall magnetic ring 400 and Hall plate 300 can also be assembled at the other end of the rotating shaft 500 (inside the housing 100), also using a magnetic encoder scheme, with the same structure as the Hall signal.
[0031] like Figure 2 As shown, in this embodiment, a worm gear 600 is fitted onto the portion of the motor shaft 500 that extends to the outside, and the two are tightly fitted and fixedly connected. The rotation of the shaft 500 drives the worm gear 600 to generate torque, thereby outputting motor torque.
[0032] like Figure 1 , 2 As shown, the end cap 200 includes an insertion portion 220, a connecting portion 210, and a first positioning portion 230. The diameter of the connecting portion 210 is larger than the diameter of the housing 100. When the housing 100 is connected to the end cap 200, the inner end face of the connecting portion 210 abuts against the outer end face of the housing 100. The insertion portion 220 is disposed on the inner end face of the connecting portion 210, and the outer diameter of the insertion portion 220 is the same as the inner diameter of the housing 100. The insertion portion 220 is used to insert into the housing 100. The end cap 200 is precisely connected and installed with the housing 100 through the connecting portion 210 and the insertion portion 220.
[0033] Furthermore, the first positioning part 230 is disposed on the outer end face of the connecting part 210, and the first positioning part 230 is a cylindrical structure centered on the central axis of the rotating shaft 500, that is, the first positioning part 230 is symmetrical about the central axis of the rotating shaft 500. When the opponent device is connected to the motor assembly, the opponent device is sleeved on the end cover 200, and the first positioning part 230 of the end cover 200 can ensure that the opponent device can be accurately concentric with the rotating shaft 500 and the worm gear 600.
[0034] Furthermore, the end cap 200 also includes a second positioning part 240, which is disposed on the outer end face of the first positioning part 230. The second positioning part 240 is a cylindrical structure centered on the central axis of the rotating shaft 500, and the diameter of the second positioning part 240 is smaller than the diameter of the first positioning part 230. The function of the second positioning part 240 is the same as that of the first positioning part 230, in order to further ensure that the hand device is concentric with the rotating shaft 500 and the worm gear 600.
[0035] Optionally, at least one anti-rotation post 260 is provided on the outer end face of the first positioning part 230. The anti-rotation post 260 is used to insert into the corresponding hole slot of the opponent device when the motor assembly is connected to the opponent device, thereby preventing the motor from rotating on its own.
[0036] like Figure 1 , 3 As shown, in this embodiment, two anti-rotation posts 260 are provided on the outer end face of the first positioning part 230, and the two anti-rotation posts 260 are symmetrically arranged along the central axis of the rotating shaft 500. Of course, the number of anti-rotation posts 260 can also be other, and a larger number of anti-rotation posts 260 has a better anti-rotation effect.
[0037] like Figure 2As shown, a first sealing groove 270 is provided on the side wall of the first positioning part 230, and a first sealing ring is installed in the first sealing groove 270. The first sealing ring is used to ensure the sealing of the connection when the motor assembly is connected to the hand device.
[0038] like Figure 2 As shown, a second sealing groove is provided on the side wall of the insertion part 220, and a second sealing ring 280 is installed in the second sealing groove. The second sealing ring 280 is used to ensure the sealing of the connection between the housing 100 and the end cover 200.
[0039] Optionally, the connector surface of the plug is provided with a mis-proof protrusion 720. There are two mis-proof protrusions 720. As a kind of foolproof positioning design, it is used to ensure accurate connection when connecting with the other wire harness connector and prevent signal failure due to incorrect installation.
[0040] Optionally, the connector surface of the plug is also provided with a thrust block 730, which is located between two anti-misalignment protrusions 720.
[0041] Used to clamp when connected to a competitor's wire harness connector, preventing the competitor's wire harness connector from being pulled out and increasing the pull-out force.
[0042] like Figure 3 As shown, the connecting portion 210 on the end cap 200 has four mounting holes 250 around its periphery for connecting the motor assembly to the opponent device with mounting bolts, so that the motor assembly and the opponent device are tightly connected.
[0043] In this embodiment, the motor assembly of the door drive mechanism houses the Hall signal component inside the motor, and integrates the wiring harness connector onto the end cover 200. This effectively avoids water ingress issues caused by soldering the wiring harness and externally placing the Hall signal component, providing excellent waterproof performance. Furthermore, the Hall plate 300 is connected to the connector via pins 710, preventing excessive voltage drop when the current is too high. In addition, the worm gear 600 and the motor shaft 500 are integrally connected, eliminating the need for additional components and avoiding the problems of numerous parts and high costs.
[0044] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. A motor assembly for a vehicle door drive mechanism, characterized in that, Includes housing (100), end cap (200), connector, Hall signal assembly, The housing (100) and the end cap (200) are connected to form a closed structure. Inside the housing (100) is a rotor (510) and a rotating shaft (500). The rotor (510) drives the rotating shaft (500) to rotate. The rotating shaft (500) is arranged along the length of the housing (100) and extends outward through the end cap (200). The Hall signal assembly includes a Hall magnetic ring (400) and a Hall plate (300), both of which are disposed inside the end cover (200). The Hall magnetic ring (400) is fixedly sleeved on the rotating shaft (500), and the Hall plate (300) is fixed on the end cover (200). The connector includes a plug (700) and a pin (710). The plug (700) is fixed on the end cap (200) and is an integral part of the end cap (200). One end of the pin (710) is connected to the Hall plate (300), and the other end extends from the plug (700).
2. The motor assembly of the door drive mechanism according to claim 1, characterized in that, A worm gear (600) is fitted onto the portion of the motor shaft (500) that extends to the outside.
3. The motor assembly of the door drive mechanism according to claim 2, characterized in that, The end cap (200) includes an insertion part (220), a connecting part (210), and a first positioning part (230). The diameter of the connecting part (210) is larger than the diameter of the housing (100). When the housing (100) is connected to the end cap (200), the inner end face of the connecting part (210) abuts against the outer end face of the housing (100). The insertion part (220) is disposed on the inner end face of the connecting part (210), and the outer diameter of the insertion part (220) is the same as the inner diameter of the housing (100), for insertion into the interior of the housing (100). The first positioning part (230) is disposed on the outer end face of the connecting part (210), and the first positioning part (230) is a cylindrical structure centered on the central axis of the rotating shaft (500).
4. The motor assembly of the door drive mechanism according to claim 3, characterized in that, The end cap (200) further includes a second positioning part (240), which is disposed on the outer end face of the first positioning part (230). The second positioning part (240) is a cylindrical structure centered on the central axis of the rotating shaft (500), and the diameter of the second positioning part (240) is smaller than the diameter of the first positioning part (230).
5. The motor assembly of the door drive mechanism according to claim 4, characterized in that, At least one anti-rotation post (260) is provided on the outer end face of the first positioning part (230).
6. The motor assembly of the door drive mechanism according to claim 5, characterized in that, The first positioning part (230) is provided with two anti-rotation posts (260), and the two anti-rotation posts (260) are symmetrically arranged along the central axis of the rotating shaft (500).
7. The motor assembly of the door drive mechanism according to claim 6, characterized in that, The first positioning part (230) has a first sealing groove (270) on its side wall, and a first sealing ring is installed in the first sealing groove (270).
8. The motor assembly of the door drive mechanism according to claim 3, characterized in that, The side wall of the insertion part (220) is provided with a second sealing groove, and a second sealing ring (280) is installed in the second sealing groove.
9. The motor assembly of the door drive mechanism according to claim 1, characterized in that, The connector surface of the plug is provided with a mis-proof protrusion (720) to ensure accurate connection when connected to the other wire harness connector.
10. The motor assembly of the door drive mechanism according to claim 9, characterized in that, The connector surface of the plug is also provided with a thrust block (730) for locking when connected to the other wire harness connector.