Door pump and electric outward swing sliding door structure

Abstract

The present invention aims to solve the problem that the structure of an electric outward swing sliding door of an automobile is relatively complex and occupies a large space of the automobile body, and provides a door pump and an electric outward swing sliding door structure, which relate to the field of automobile technology. The door pump comprises a rotating cylinder, and a motor, a reduction mechanism and a spline shaft arranged in the rotating cylinder; the two ends of the rotating cylinder are provided with an upper end seat and a lower end seat that are rotatably matched with the rotating cylinder, the spline shaft cooperates with a spline groove arranged on the inner wall of the rotating cylinder, and the motor is connected to the spline shaft through the reduction mechanism. The present invention can make the loading space of the automobile body larger, thereby improving the competitiveness of the product.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a door pump and an electric outward-swinging sliding door structure. Background Art

[0002] In commercial vehicles, the electric outward swing sliding door structure has gradually become the mainstream door opening structure. Compared with the traditional pneumatic or manual sliding door structure, the electric outward swing sliding door structure has the characteristics of low maintenance cost, reliable performance and high functionality.

[0003] The existing electric outward swing sliding door structure is as follows Figure 1 As shown, it mainly includes a motor 12, a door shaft 5, a curved arm 6 and a connecting rod mechanism 4. The door 2 is installed on the door shaft 5 through the curved arm 6. The motor 12 drives the door 2 to rotate around the door shaft 5 through the connecting rod mechanism 4, thereby realizing the rotation and opening and closing action of the door 2. This structure is relatively complex and occupies a large space in the vehicle body. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the problem that the structure of an electric outward-swinging sliding door structure of an automobile is relatively complex and occupies a large space of the automobile body, a door pump and an electric outward-swinging sliding door structure are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a door pump includes a rotating cylinder, and a motor, a reduction mechanism and a spline shaft arranged in the rotating cylinder; the two ends of the rotating cylinder are provided with an upper end seat and a lower end seat that rotate with the rotating cylinder, the spline shaft cooperates with the spline groove arranged on the inner wall of the rotating cylinder, and the motor is connected to the spline shaft through the reduction mechanism.

[0006] Furthermore, the reduction mechanism includes a planetary carrier, a ring gear and a planetary wheel; the planetary carrier is fixedly connected to the lower end seat, the ring gear and the planetary wheel are installed on the planetary carrier, the planetary wheel is arranged in the ring gear and meshes with the ring gear, the ring gear is transmission connected to the spline shaft, and the motor is transmission connected to the planetary wheel.

[0007] Furthermore, the lower end seat includes a mounting seat, a buffer sleeve and a buffer spring with one end connected to the mounting seat, the buffer sleeve can be rotatably mounted on the mounting seat, and one end is rotatably cooperated with the rotating cylinder, and the planetary carrier is fixedly connected to the buffer sleeve; there are two buffer springs, which are in contact with each other on both sides of the buffer sleeve, and the buffer springs are eccentrically in contact with both sides of the buffer sleeve.

[0008] Furthermore, a dome-shaped pin is fixed on the mounting seat, the other end of the buffer sleeve cooperates with the dome of the pin, and a gap is left between the other end of the buffer sleeve and the mounting seat to allow the buffer sleeve to shake; a joint bearing is provided in the upper end seat to rotate with the rotating cylinder.

[0009] Furthermore, the mounting seat is provided with a slide groove extending along the axis of the buffer sleeve, and one end of the buffer spring is connected to the slide seat arranged in the slide groove.

[0010] Furthermore, it also includes an electromagnetic brake arranged in the rotating cylinder, and the electromagnetic brake is connected to the motor.

[0011] Furthermore, the motor is a dual-axis motor.

[0012] Furthermore, it also includes a speed detector arranged in the rotating drum, and the speed detector is connected to the motor.

[0013] The electric outward-swinging sliding door structure comprises a vehicle door, a curved arm and the above-mentioned door pump, wherein the upper end seat and the lower end seat are mounted on a vehicle frame, and the vehicle door is fixedly connected to the rotating cylinder via the curved arm.

[0014] The beneficial effect of the present invention is that when the door pump is in use, the rotating cylinder can be used as the door shaft of the vehicle door for installing the curved arm, thereby eliminating the connecting rod mechanism between the motor and the vehicle door, and the motor is also arranged in the rotating cylinder. In this way, the entire electric outward-swinging sliding door structure can be made more compact and simpler in structure, thereby reducing the space occupied by the vehicle body by the entire sliding door structure, and the vehicle body can have a larger loading space, thereby improving the product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an existing electric outward swing sliding door;

[0016] Figure 2 is an exploded view of the door pump of the present invention;

[0017] Figure 3 is an exploded view of the speed reduction mechanism of the present invention;

[0018] Figure 4 is an exploded view of the lower end seat of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the electric outward swing sliding door of the present invention;

[0020] Shown in the figure: door pump 1, door 2, frame 3, connecting rod mechanism 4, door shaft 5, bent arm 6, rotating cylinder 11, motor 12, reduction mechanism 13, spline shaft 14, electromagnetic brake 15, speed detector 16, thrust bearing 17, lower end seat 18, upper end seat 19, planetary carrier 131, ring gear 132, planetary gear 133, output shaft 134, bearing 135, screw 137, mounting seat 181, buffer sleeve 182, buffer spring 183, slide seat 184, pin 185, gap 186, slide groove 187, spherical bearing 191, supporting spline shaft 192. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 2 As shown, the door pump 1 of the present invention comprises a rotating cylinder 11, and a motor 12, a speed reduction mechanism 13 and a spline shaft 14 arranged in the rotating cylinder 11. The rotating cylinder 11 is provided with an upper end seat 19 and a lower end seat 18 at both ends thereof, which are rotatably matched with the rotating cylinder 11. The spline shaft 14 is matched with a spline groove arranged on the inner wall of the rotating cylinder 11, and the motor 12 is connected to the spline shaft 14 through the speed reduction mechanism 13, thereby driving the rotating cylinder 11 to rotate.

[0023] When the door pump is in use, the upper end seat 19 and the lower end seat 18 are connected to the frame 3. The door pump sets the motor 12 in the rotating cylinder 11, and drives the rotating cylinder 11 to rotate through the motor 12. When in use, the rotating cylinder 11 can be used as the door shaft 5 of the door 2 for installing the curved arm 6 (see Figure 5 ). After adopting the door pump 1, the vehicle door 2 can be directly driven by the rotating cylinder 11 to realize the push-pull action, that is, after adopting the door pump 1, the connecting rod mechanism 4 between the motor 12 and the vehicle door 2 is omitted, and the motor 12 is also arranged in the rotating cylinder 11 (door shaft), so that the entire sliding door structure is more compact and simpler, thereby reducing the occupation of the vehicle body space by the entire sliding door structure, and the vehicle body can have a larger loading space, thereby improving the product competitiveness.

[0024] Specifically, Figure 3 As shown, the reduction mechanism 13 includes a planet carrier 131, a ring gear 132 and a planetary gear 133. The planet carrier 131 is fixedly connected to the lower end seat 18 through an output shaft 134, and the planetary gear 133 is installed on the planet carrier 131. The ring gear 132 is connected to the outer ring of the bearing 135 sleeved on the output shaft 134 through a screw 137, so as to be installed on the planet carrier 131. The planetary gear 133 is arranged in the ring gear 132 and meshes with the ring gear 132. The ring gear 132 is connected to the spline shaft 14 in a transmission manner. The output shaft of the motor 12 is arranged at the center of the planetary gear 133 as a sun gear and is connected to the planetary gear 133 in a transmission manner. In the figure, the ring gear 132 is fixedly connected to the spline shaft 14 by screws, and the two can also be an integrated structure, that is, the spline is arranged on the outer surface of the ring gear 132. When in use, the motor 12 drives the ring gear 132 to rotate through the planetary gear 133, and the ring gear 132 then drives the rotating cylinder 11 to rotate through the spline shaft 14. Compared with the ordinary gear reduction mechanism, the above reduction mechanism has a more compact structure, which can reduce the diameter of the rotating cylinder 11, making the volume of the gate pump 1 smaller. In the figure, the planetary carrier 131 is also provided with a two-stage planetary reduction structure, thereby forming a three-stage reduction mechanism. Of course, the reduction mechanism 13 can also adopt a single stage, which is selected according to the actual required speed.

[0025] When the motor 12 stops rotating, due to inertia, the door 2 will generate an impact force on the frame 3 through the end seat, which may cause the frame 3 to deform. In order to prevent the frame from deforming, Figure 4 As shown, the lower end seat 18 includes a mounting seat 181, a buffer sleeve 182 and a buffer spring 183 connected to the mounting seat 181 at one end. The buffer sleeve 182 can be rotatably mounted on the mounting seat 181, and one end is rotatably matched with the rotating cylinder 11. The planetary carrier 131 is fixedly connected to the buffer sleeve 182 through the output shaft 134 fixedly connected thereto. There are two buffer springs 183, and the other ends of the buffer springs 183 abut against the two sides of the buffer sleeve 182 facing each other, and the buffer springs 183 eccentrically abut against the two sides of the buffer sleeve 182. The buffer sleeve 182 can directly rotate with the rotating cylinder 11. In the figure, a copper sleeve 111 is fixedly provided at the end of the rotating cylinder 11, and one end (upper end) of the buffer sleeve 182 is rotatably matched with the rotating cylinder 11 through the copper sleeve 111. It can be understood that a thrust bearing 17 needs to be provided between the buffer sleeve 182 and the rotating cylinder 11 (copper sleeve 111) to reduce the friction between the two. The buffer spring 183 is eccentrically abutted against both sides of the buffer sleeve 182, that is, the connection line between the buffer springs 183 does not pass through the center of the buffer sleeve 182. When the motor 12 stops rotating (locked), the inertial force of the door 2 is transmitted to the buffer sleeve 182 through the output shaft 134, causing the buffer sleeve 182 to rotate, thereby compressing the buffer springs 183 on both sides, achieving the purpose of buffering shock absorption and preventing the frame from deforming. In this way, the strength requirements of the frame can be reduced. Even if the motor 12 is locked, this structure uses a certain force to push the door 2. By compressing the buffer spring 183, the door 2 can also drive the planetary carrier 131 to rotate, thereby realizing emergency opening of the door.

[0026] The buffer sleeve 182 can be rotatably mounted on the mounting seat 181 by rotatably cooperating with the shaft on the mounting seat 181 . Figure 4 In the figure, a dome-shaped pin 185 is fixed on the mounting seat 181, and the other end (lower end) of the buffer sleeve 182 cooperates with the dome of the pin 185, and a gap 186 is left between the other end (lower end) of the buffer sleeve 182 and the mounting seat 181 to allow the buffer sleeve 182 to shake. A joint bearing 191 that rotates with the rotating cylinder 11 is provided in the upper end seat 19. The joint bearing 191 can directly rotate with the rotating cylinder 11. In the figure, the joint bearing 191 rotates with the rotating cylinder 11 through the supporting spline shaft 192. This structure can make the door 2 swing up and down within a certain range during use, thereby facilitating the installation of the door 2, which also reduces the size requirements for the frame 3.

[0027] One end of the buffer spring 183 can be directly fixed on the mounting seat 181. Figure 4In the embodiment, the mounting seat 181 is provided with a slide groove 187 extending along the axis of the buffer sleeve 182, and one end of the buffer spring 183 is connected to the slide seat 184 arranged in the slide groove 187. In this way, the buffer spring 183 can be prevented from bending and deforming during the swinging process of the buffer sleeve 182.

[0028] The motor 12 can be braked electrically (only the high-speed end of the motor can be braked by the electromagnetic brake). Figure 2 In the embodiment, an electromagnetic brake 15 is arranged in the rotating cylinder 11, and the electromagnetic brake 15 is connected to the output shaft of the motor 12. That is, the present invention adopts mechanical braking, and the braking effect is better.

[0029] For the convenience of installing electromagnetic brake 15, the motor 12 of this door pump adopts a double-shaft motor. Electromagnetic brake 15 can be connected with another output shaft of motor like this.

[0030] A speed detector 16 is also provided in the rotating cylinder 11 for conveniently controlling the movement of the door 2 . The speed detector 16 is connected to the output shaft of the motor 12 .

[0031] like Figure 5 As shown, the present application also provides an electric outward swing sliding door structure, including a vehicle door 2, a curved arm 6 and a door pump 1 adopting the above structure, wherein the upper end seat 19 and the lower end seat 18 are mounted on the vehicle frame 3, and the vehicle door 2 is fixedly connected to the rotating cylinder 11 through the curved arm 6. The electric outward swing sliding door adopting this structure omits the connecting rod mechanism 4 between the motor 12 and the vehicle door 2, and the motor 12 is also arranged in the rotating cylinder 11 (door shaft), so that the entire sliding door structure is more compact and simpler, thereby reducing the occupation of the vehicle body space by the entire sliding door structure, and the vehicle body can have a larger loading space, thereby improving the product competitiveness.

Claims

1. Door pump, characterized in that: The invention comprises a rotating cylinder (11), and a motor (12), a speed reducing mechanism (13) and a spline shaft (14) arranged in the rotating cylinder (11); an upper end seat (19) and a lower end seat (18) which are rotatably matched with the rotating cylinder (11) are arranged at both ends of the rotating cylinder (11); the spline shaft (14) is matched with a spline groove arranged on the inner wall of the rotating cylinder (11); and the motor (12) is transmission-connected to the spline shaft (14) through the speed reducing mechanism (13); The speed reduction mechanism (13) comprises a planet carrier (131), a ring gear (132) and a planetary wheel (133); the planet carrier (131) is fixedly connected to the lower end seat (18); the ring gear (132) and the planetary wheel (133) are mounted on the planet carrier (131); the planetary wheel (133) is arranged in the ring gear (132) and meshes with the ring gear (132); the ring gear (132) is drivingly connected to the spline shaft (14); and the motor (12) is drivingly connected to the planetary wheel (133); The lower end seat (18) comprises a mounting seat (181), a buffer sleeve (182) and a buffer spring (183) with one end connected to the mounting seat (181); the buffer sleeve (182) is rotatably mounted on the mounting seat (181), and one end is rotatably matched with the rotating cylinder (11); the planet carrier (131) is fixedly connected to the buffer sleeve (182); there are two buffer springs (183) which are in contact with each other at two sides of the buffer sleeve (182); the buffer springs (183) are eccentrically contacted at two sides of the buffer sleeve (182).

2. The door pump according to claim 1, characterized in that: A dome-shaped pin (185) is fixedly provided on the mounting seat (181); the other end of the buffer sleeve (182) cooperates with the dome of the pin (185); and a gap (186) is left between the other end of the buffer sleeve (182) and the mounting seat (181) to allow the buffer sleeve (182) to shake; and a joint bearing (191) is provided in the upper end seat (19) to rotate with the rotating cylinder (11).

3. The door pump according to claim 2, characterized in that: The mounting seat (181) is provided with a slide groove (187) extending along the axis of the buffer sleeve (182), and one end of the buffer spring (183) is connected to a slide seat (184) arranged in the slide groove (187).

4. The door pump according to claim 1, characterized in that: It also includes an electromagnetic brake (15) arranged in the rotating cylinder (11), and the electromagnetic brake (15) is connected to the motor (12).

5. The door pump according to claim 4, characterized in that: It also includes a speed detector (16) arranged in the rotating cylinder (11), and the speed detector (16) is connected to the motor (12).

6. The door pump according to claim 4, characterized in that: The motor (12) is a dual-shaft motor.

7. Electric outward swing sliding door structure, characterized by: It comprises a vehicle door (2), a curved arm (6) and a door pump (1) as claimed in any one of claims 1 to 6, wherein the upper end seat (19) and the lower end seat (18) are mounted on a vehicle frame (3), and the vehicle door (2) is fixedly connected to the rotating cylinder (11) via the curved arm (6).

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