CN220353681U - Door drive arrangement and car - Google Patents

Abstract

The utility model provides a vehicle door driving device and an automobile, and relates to the technical field of automobile parts. The motor in the vehicle door driving device can avoid occupying the vertical space of the vehicle and simultaneously reduce the space occupation in the length direction of the vehicle as much as possible.

Description

Door drive arrangement and car

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a vehicle door driving device and an automobile.

Background

Along with the development of automobiles gradually to intelligent direction, it is more and more common to be equipped with electric car doors, and electric car doors have greatly improved user's automobile experience, reinforcing user's convenience of using. In some vehicle types, the space in the vertical direction of the vehicle is limited, so in the existing vehicle door driving device, in order to reduce the space occupation of the vehicle door driving device in the vertical direction of the vehicle, a motor is usually arranged at one end of a screw rod, and after the screw rod is driven by the motor to rotate, a sliding piece on the screw rod moves along the screw rod so as to drive the vehicle door to move. Although such a door driving device may reduce the space occupation in the vertical direction of the vehicle, the motor may occupy too much of the length space of the vehicle, which may not be applicable to some vehicle types having limited length space, or may affect the arrangement of other structures in the length direction of the vehicle even if some vehicle types are applicable to such a door driving device.

Disclosure of Invention

The utility model aims to solve the problem of occupation of vehicle space by a vehicle door driving device.

In order to solve the above problems, the present utility model provides a vehicle door driving device, which comprises a motor, a screw rod and a sliding piece, wherein the motor comprises a motor shaft, the motor shaft is a hollow shaft, one end of the screw rod extends into the hollow shaft and is connected with the hollow shaft, the sliding piece is in threaded connection with the screw rod, a fixing part of the vehicle door driving device is connected with one of a vehicle door and a vehicle body, and the sliding piece is used for being connected with the other one of the vehicle door and the vehicle body.

Compared with the prior art, the vehicle door driving device provided by the utility model has the following technical effects:

in the utility model, because the motor is coaxially connected with the screw rod, the motor does not occupy the space of the vehicle perpendicular to the direction of the screw rod, namely, the motor does not occupy the vertical space of the vehicle, and because the motor is a hollow shaft motor, namely, the motor shaft of the motor is a hollow shaft, the end part of the screw rod can extend into the hollow shaft and the space occupation of the motor coaxially connected with the screw rod in the length direction of the vehicle can be reduced, wherein the motor can be arranged in the vehicle door under the reaction force of the sliding member, and the motor does not occupy the vertical space of the vehicle door and the space occupation of the vehicle door in the length direction of the vehicle can be reduced.

Further, the vehicle door driving device further comprises a fixing shell, the motor is connected with one end of the fixing shell, one end of the screw rod, far away from the motor, stretches into the fixing shell, the sliding piece comprises a sliding block and a connecting rod, the sliding block is in threaded connection with the screw rod, the sliding block is in sliding connection with the fixing shell, the first end of the connecting rod is connected with the sliding block, and the second end of the connecting rod stretches out of the fixing shell and is used for being connected with the other one of the vehicle door and the vehicle body.

Further, the sliding block comprises a sliding block main body and a bushing, the bushing is embedded in the sliding block main body, the bushing is relatively fixed with the sliding block main body, and the bushing is in threaded connection with the screw rod.

Further, a first guide structure is arranged on the side face of the sliding block main body, and a second guide structure matched with the first guide structure is arranged on the inner wall of the fixed shell.

Further, the first guide structure comprises a plurality of guide male grooves arranged on the same side face of the slider main body, a first guide protrusion is formed between every two adjacent guide male grooves, the second guide structure comprises a plurality of second guide protrusions arranged on the same inner wall of the fixed shell, a guide female groove is formed between every two adjacent second guide protrusions, the guide male grooves are matched with the second guide protrusions, and the first guide protrusions are matched with the guide female grooves.

Further, the motor further comprises a cylindrical shell and a cover, one end of the cylindrical shell is connected with one end wall of the fixed shell, and the cover is arranged at the other end of the cylindrical shell.

Further, the vehicle door driving device further comprises an electromagnetic brake, an extension shaft is arranged at one end of the hollow shaft, the extension shaft extends out of the machine cover, the electromagnetic brake is sleeved on the extension shaft, a rotor of the electromagnetic brake is connected with the extension shaft in a key manner, and a shell of the electromagnetic brake is connected with the machine cover; or one end of the screw rod extends out of the hollow shaft, the rotor of the electromagnetic brake is sleeved on the part of the screw rod extending out of the hollow shaft, the rotor of the electromagnetic brake is connected with the screw rod through a key, and the shell of the electromagnetic brake is connected with the cover.

Further, the fixed housing comprises a first end wall and a second end wall which are oppositely arranged, wherein the first end wall is provided with a wall hole for the connecting rod to pass through, and the second end wall is connected with the motor.

Further, one end of the screw rod, which is far away from the motor, is supported in the bearing hole of the first end wall through a first bearing, one end of the hollow shaft is supported in the bearing hole of the second end wall through a second bearing, and the other end of the hollow shaft is supported in the bearing hole of the shell through a third bearing.

The utility model also provides an automobile, comprising the automobile door driving device.

Since technical improvements and technical effects of the automobile are the same as those of the door driving device, a detailed description of the automobile is omitted.

Drawings

Fig. 1 is a schematic structural view of a door driving device according to an embodiment of the present utility model;

fig. 2 is a schematic sectional view of a door driving device according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a motor; 11. a hollow shaft; 12. a cylindrical housing; 13. a cover; 2. a screw rod; 3. a slider; 31. a slide block; 311. a slider body; 3111. a guide male groove; 3112. a first guide projection; 312. a bushing; 32. a connecting rod; 4. a fixed case; 41. a first end wall; 42. a second end wall; 431. a second guide projection; 432. guiding the mother groove; 5. an electromagnetic brake; 61. a first bearing; 62. a second bearing; 63. and a third bearing.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "upper", "lower", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Moreover, in the drawings, the X-axis represents the longitudinal direction, that is, the front-rear direction, and the positive direction of the X-axis represents the front, and the negative direction of the X-axis represents the rear; the Y-axis represents lateral, i.e., left-right, direction, and the positive direction of the Y-axis represents left, and the negative direction of the Y-axis represents right; the Z-axis represents vertical, i.e., up-down, and the positive direction of the Z-axis represents up and the negative direction of the Z-axis represents down. It should also be noted that the foregoing X-axis, Y-axis, and Z-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented or configured in a particular orientation and operation and therefore should not be construed as limiting the present utility model.

Referring to fig. 1-2, a vehicle door driving device according to an embodiment of the present utility model includes a motor 1, a screw rod 2, and a slider 3, wherein the motor 1 includes a motor shaft, the motor shaft is a hollow shaft 11, one end of the screw rod 2 extends into the hollow shaft 11 and is connected to the hollow shaft 11, the slider 3 is screwed to the screw rod 2, a fixing portion of the vehicle door driving device is connected to one of a vehicle door and a vehicle body, and the slider 3 is used for being connected to the other one of the vehicle door and the vehicle body.

In this embodiment, taking the motor 1 being disposed on the door and the sliding part 3 being disposed on the body as an example, the fixing part of the door driving device is the sliding part 3 being disposed on the body, when the motor 1 is powered on, the hollow shaft 11 of the motor 1 is connected with the screw rod 2, the hollow shaft 11 rotates to drive the screw rod 2, and the sliding part 3 being screwed on the screw rod 2 is connected with the body, so under the reaction force of the sliding part 3, the rotating screw rod 2 moves along the sliding part 3, and the screw rod 2 drives the motor 1 connected with the screw rod 2 to move together, thereby driving the door to move, realizing opening and closing of the door. As described above, the motor 1 may be provided on the vehicle body as a movable portion of the door driving device, and the slider 3 may be provided on the vehicle door as a fixed portion of the door driving device, which is a first arrangement of the door driving device.

Of course, in other embodiments, the door driving device may also adopt a second arrangement, that is, the motor 1 is used as a fixed part of the door driving device and is disposed on the vehicle body, and the slider 3 is used as a movable part of the door driving device and is disposed on the vehicle door. In this case, when the motor 1 drives the screw rod 2 to rotate, the slider 3 moves along the screw rod 2, thereby driving the door to move.

It should be noted that, when the motor 1 is disposed on the vehicle door and the sliding member 3 is disposed on the vehicle body, the connection relationship between the hollow shaft 11 and the screw rod 2 may be a key connection, and the key connection relationship ensures that the screw rod 2 and the hollow shaft 11 synchronously rotate and also ensures that the screw rod 2 will not move relative to the hollow shaft 11. When the motor 1 is arranged on the vehicle body and the sliding piece 3 is arranged on the vehicle door, the connection relation between the hollow shaft 11 and the screw rod 2 can be a key connection, and the key connection relation at least ensures that the screw rod 2 and the hollow shaft 11 synchronously rotate.

In order not to obscure the following, the following description will be given of the first arrangement of the door drive device, that is, the motor 1 is provided on the door, and the slider 3 is provided on the vehicle body.

Referring to fig. 1 and 2, optionally, the door driving device further includes a fixing case 4, the motor 1 is connected to one end of the fixing case 4, an end of the screw rod 2 remote from the motor 1 extends into the fixing case 4, the slider 3 includes a slider 31 and a link rod 32, the slider 31 is screwed to the screw rod 2, the slider 31 is slidably connected to the fixing case 4, a first end of the link rod 32 is connected to the slider 31, and a second end of the link rod 32 extends out of the fixing case 4 and is used for connection with the other of the door and the vehicle body. The motor 1 and the fixing housing 4 can together serve as a fixing part of the door drive.

In this embodiment, the motor 1 can be connected with the vehicle door through the fixed shell 4, that is, the fixed shell 4 is installed on the vehicle door, the motor 1 is installed on the fixed shell 4, one end (the front end in the drawing) of the screw rod 2 far away from the motor 1 can be arranged in the fixed shell 4, the fixed shell 4 provides support for the front end of the screw rod 2, deflection change occurs when the screw rod 2 rotates is prevented, and stability of transmission is improved. The front end of the connecting rod 32 in the sliding part 3 extends out of the fixed shell 4 and then is connected with the vehicle body, the force for driving the vehicle door to move is transmitted through double rods (the double rods refer to the screw rod 2 and the connecting rod 32), the fixed shell 4 and the sliding part 3 are in a relative sliding connection relationship, the fixed shell 4 is equivalent to a guide shell, namely, when the screw rod 2 moves relative to the sliding part 3, the fixed shell 4 drives the motor 1 to slide relative to the sliding block 31 and the connecting rod 32, the vehicle door can move more stably, and the integral rigidity of the whole vehicle door driving device is improved.

In order to meet the motion track of the vehicle door (the motion track is a rotation motion track), the connecting rod 32 can be hinged with the sliding block 31 through a pin shaft, or/and the connecting rod 32 can be hinged with a vehicle body fixing support (the vehicle body fixing support is arranged on the vehicle body) through a pin shaft, so that the motor 1 and the fixing shell 4 can swing adaptively when moving along with the screw rod 2, and the motion track of the vehicle door can be adapted.

Referring to fig. 2, alternatively, the slider 31 includes a slider body 311 and a bush 312, the bush 312 is embedded in the slider body 311, the bush 312 is fixed relative to the slider body 311, and the bush 312 is screwed on the screw 2.

In this embodiment, the bushing 312 may be made of metal, and has sufficient strength and rigidity, and the outer wall of the bushing 312 is in interference fit or key connection with the slider body 311, so that the bushing 312 cannot rotate and move relative to the slider 31, and further stability of movement of the screw 2 in the bushing 312 is ensured.

Referring to fig. 2, alternatively, a first guide structure is provided at a side of the slider body 311, and a second guide structure is provided at an inner wall of the fixing case 4 to be engaged with the first guide structure.

In this embodiment, by providing the first guiding structure on the side surface (left side surface and/or right side surface) of the slider body 311, the fixing housing 4 is internally provided with the second guiding structure matched with the first guiding structure, so as to ensure the stability of the fixing housing 4 when sliding relative to the slider body 311.

Referring to fig. 2, alternatively, the first guide structure includes a plurality of guide male grooves 3111 disposed on the same side of the slider body 311, a first guide protrusion 3112 is formed between two adjacent guide male grooves 3111, the second guide structure includes a plurality of second guide protrusions 431 disposed on the same inner wall of the fixing case 4, and a guide female groove 432 is formed between two adjacent second guide protrusions 431, wherein the guide male grooves 3111 are engaged with the second guide protrusions 431, and the first guide protrusions 3112 are engaged with the guide female grooves 432.

In this embodiment, a plurality of guiding male grooves 3111 are formed on a side surface of the slider body 311, a first guiding protrusion 3112 is formed between two adjacent guiding male grooves 3111, a plurality of second guiding protrusions 431 are formed on a side wall of the fixing housing 4, a guiding female groove 432 is formed between two adjacent second guiding protrusions 431, the guiding female groove 432 is matched with the first guiding protrusion 3112, meanwhile, the guiding male grooves 3111 are matched with the second guiding protrusions 431, the sliding matching relationship between the fixing housing 4 and the slider body 311 is better, and the stability of the movement of the fixing housing 4 is higher.

Referring to fig. 1 and 2, optionally, the motor 1 further includes a cylindrical housing having one end connected to an end wall of the fixed housing 4 and a cover 13 disposed at the other end of the cylindrical housing.

In this embodiment, the cylindrical casing is a cylindrical casing 12 having openings at both ends, the opening at the rear end thereof is covered by the cover 13, and the opening at the front end thereof is covered by the rear end wall of the fixed casing 4, that is, the casing of the motor 1 and the fixed casing 4 share one casing wall (the rear end wall of the fixed casing 4), so that the space occupation of the motor 1 in the vehicle longitudinal direction can be further reduced. The cylindrical shell can be integrally formed with the fixed shell 4, so that the connection strength between the cylindrical shell and the fixed shell can be improved, and the hollow shaft 11 of the motor 1 is connected with the rear end of the screw rod 2 through a key.

Referring to fig. 1 and 2, optionally, the door driving device further includes an electromagnetic brake 5, an extension shaft is disposed at one end of the hollow shaft 11, the extension shaft extends out of the cover 13, the electromagnetic brake 5 is sleeved on the extension shaft, a rotor of the electromagnetic brake 5 is connected with the extension shaft, and a housing of the electromagnetic brake 5 is connected with the cover 13; or, one end of the screw rod 2 extends out of the hollow shaft 11, the rotor of the electromagnetic brake 5 is sleeved on the part of the screw rod 2 extending out of the hollow shaft 11, the rotor of the electromagnetic brake 5 is connected with the screw rod 2, and the shell of the electromagnetic brake 5 is connected with the cover 13.

In this embodiment, the electromagnetic brake 5 is closely attached to the motor 1 in the axial direction, specifically, the housing of the electromagnetic brake 5 is connected to the cover 13 of the motor 1, so that the space occupation of the electromagnetic brake 5 in the longitudinal direction of the vehicle is reduced as much as possible. The rear end of the hollow shaft 11 extends backwards to extend out of an extending shaft of the cover 13, a rotor of the electromagnetic brake 5 is connected with the extending shaft, the electromagnetic brake 5 can be electrified at the same time after the motor 1 is stopped, a magnetic field is generated in a stator magnetic pole air gap of the electromagnetic brake 5 by controlling exciting current, the rotor of the electromagnetic brake 5 generates hysteresis effect to generate certain torque, a damping effect is achieved, the hollow shaft 11 is further damped, the screw rod 2 and a car door can not move or float continuously under the inertia effect after the motor 1 is stopped, the overall smoothness of the car door is improved, and the damping force provided by the electromagnetic brake 5 can also ensure that the car door hovers at a certain position. The electromagnetic brake 5 can also be connected in such a way that the rear end of the screw rod 2 extends out of the hollow shaft 11 and the cover 13 and then is connected with the rotor of the electromagnetic brake 5.

Referring to fig. 2, the fixed case 4 may alternatively include a first end wall 41 and a second end wall 42 disposed opposite to each other, the first end wall 41 being provided with a wall hole through which the connecting rod 32 passes, and the second end wall 42 being connected to the motor 1.

In this embodiment, as shown in fig. 2, the first end wall 41 of the fixing case 4 is the front end wall of the fixing case 4, the second end wall 42 is the rear end wall, the front end of the connecting rod 32 passes through the first end wall 41, and the motor 1 is specifically installed at the second end wall 42, so that the motor 1 and the fixing case 4 can be installed inside the vehicle door, when the end of the connecting rod 32 extending out of the fixing case 4 is connected with the vehicle body on the front side of the door frame, the vehicle door is opened forward, and when the end of the connecting rod 32 extending out of the fixing case 4 is connected with the vehicle body on the rear side of the door frame, the vehicle door is opened backward.

The fixing case 4 may be mounted inside the door by a stud, and specifically, the first end wall 41 may be connected to the door by a stud.

Referring to fig. 2, alternatively, the end of the screw 2 remote from the motor 1 is supported in the bearing hole of the first end wall 41 by a first bearing 61, the end of the hollow shaft 11 is supported in the bearing hole of the second end wall 42 by a second bearing 62, and the other end of the hollow shaft 11 is supported in the bearing hole of the housing by a third bearing 63.

In this embodiment, the front end of the hollow shaft 11 is supported in the bearing hole of the second end wall 42 through the second bearing 62, the rear end of the hollow shaft 11 is supported in the bearing hole of the cover 13 through the third bearing 63, so as to ensure the rotation support of the hollow shaft 11, and meanwhile, the second bearing 62 and the third bearing 63 can also support the rear end of the screw rod 2, and the front end of the screw rod 2 is supported in the bearing hole of the first end wall 41 through the first bearing 61, so as to ensure the rotation stability of the screw rod 2.

An automobile according to another embodiment of the present utility model includes the door driving device as described above.

Since technical improvements and technical effects of the automobile are the same as those of the door driving device, a detailed description of the automobile is omitted.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" and "a second" may explicitly or implicitly include at least one such feature.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a door drive arrangement, its characterized in that includes motor (1), lead screw (2) and slider (3), motor (1) include the motor shaft, the motor shaft is hollow shaft (11), the one end of lead screw (2) stretch into in hollow shaft (11) and with hollow shaft (11) are connected, slider (3) threaded connection in on lead screw (2), door drive arrangement's fixed part is connected with one of door and automobile body, slider (3) be used for with the door reaches another one of automobile body is connected.

2. The vehicle door driving device according to claim 1, further comprising a fixing case (4), wherein the motor (1) is connected to one end of the fixing case (4), one end of the screw (2) remote from the motor (1) extends into the fixing case (4), the slider (3) includes a slider (31) and a link (32), the slider (31) is screwed to the screw (2), and the slider (31) is slidingly connected to the fixing case (4), a first end of the link (32) is connected to the slider (31), and a second end of the link (32) extends out of the fixing case (4) and is used for connection to the other of the vehicle door and the vehicle body.

3. The vehicle door driving device according to claim 2, wherein the slider (31) includes a slider body (311) and a bush (312), the bush (312) is embedded in the slider body (311), and the bush (312) is fixed relative to the slider body (311), and the bush (312) is screwed to the screw (2).

4. A door driving apparatus according to claim 3, wherein a side surface of the slider body (311) is provided with a first guide structure, and an inner wall of the stationary case (4) is provided with a second guide structure that mates with the first guide structure.

5. The door driving device according to claim 4, wherein the first guide structure includes a plurality of guide male grooves (3111) provided on the same side of the slider body (311), a first guide protrusion (3112) is formed between two adjacent guide male grooves (3111), the second guide structure includes a plurality of second guide protrusions (431) provided on the same inner wall of the stationary housing (4), a guide female groove (432) is formed between two adjacent second guide protrusions (431), wherein the guide male grooves (3111) are engaged with the second guide protrusions (431), and the first guide protrusions (3112) are engaged with the guide female grooves (432).

6. The door driving device according to claim 2, wherein the motor (1) further includes a cylindrical housing and a cover (13), one end of the cylindrical housing is connected to an end wall of the stationary housing (4), and the cover (13) is provided at the other end of the cylindrical housing.

7. The vehicle door driving device according to claim 6, further comprising an electromagnetic brake (5), wherein an extension shaft is provided at one end of the hollow shaft (11), the extension shaft extends out of the cover (13), the electromagnetic brake (5) is sleeved on the extension shaft, a rotor of the electromagnetic brake (5) is in key connection with the extension shaft, and a housing of the electromagnetic brake (5) is connected with the cover (13); or, one end of the screw rod (2) stretches out of the hollow shaft (11), the rotor of the electromagnetic brake (5) is sleeved on the part of the screw rod (2) stretching out of the hollow shaft (11), the rotor of the electromagnetic brake (5) is in key connection with the screw rod (2), and the shell of the electromagnetic brake (5) is connected with the cover (13).

8. The door drive device according to claim 7, characterized in that the stationary housing (4) comprises a first end wall (41) and a second end wall (42) arranged opposite to each other, the first end wall (41) being provided with a wall hole through which the link (32) passes, the second end wall (42) being connected with the motor (1).

9. The vehicle door drive device according to claim 8, characterized in that one end of the screw rod (2) remote from the motor (1) is supported in the bearing hole of the first end wall (41) by a first bearing (61), one end of the hollow shaft (11) is supported in the bearing hole of the second end wall (42) by a second bearing (62), and the other end of the hollow shaft (11) is supported in the bearing hole of the housing by a third bearing (63).

10. An automobile comprising the door drive device according to any one of claims 1 to 9.