Auxiliary door opening actuator for vehicle door

Abstract

The utility model discloses an auxiliary door opening actuator for a vehicle door, which comprises a column B positioned on a vehicle body, a metal plate mounted on the vehicle door, a push rod mechanism arranged on the metal plate in a penetrating manner, a push rod cap fixed on the push rod mechanism, and a power mechanism vertically connected with the push rod mechanism, when the push rod fixed on the automobile body is pushed out, the push rod cap penetrates through the metal plate to abut against the column B, and the power mechanism drives the push rod mechanism to do telescopic motion, so that the automobile door is reversely pushed under the condition that the push rod cap fixed on the push rod mechanism abuts against the column B. The auxiliary door opening actuator is low in cost, and the size is obviously smaller than that of a shell adopted in the prior art. And therefore, the space required by the arrangement in the door is smaller, the arrangement is easier, and the use flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an auxiliary door opening actuator for a vehicle door. Background Art

[0002] At present, door auxiliary opening actuators are already in use on existing models, which are mainly divided into three categories. One is the full-stroke electric opening and closing actuator, which is mainly arranged near the door shaft hinge to replace the traditional limiter; the other is the small-angle or specific-angle auxiliary door opening mechanism we are going to mention, which is generally arranged at the edge of the door, mainly to help the door open a small angle, or to assist in ice breaking under extreme working conditions; there is also a category that integrates the auxiliary door opening function into the door lock or other mechanisms, but the output force value will be limited and relatively small.

[0003] For example, the door opening and closing auxiliary unit disclosed in Japanese patent JPS57126717A operates the hydraulic auxiliary unit through the door opening signal and the detection signal of the vehicle tilt detection switch, improves the safety of opening and closing the hinged opening and closing door of the tilted vehicle, and the auxiliary door opening structure, when the vehicle is not tilted and stopped, a certain degree of tilt sensor does not perform the hydraulic actuation of the hydraulic cylinder due to its closed operation. When the tilt sensor detects the inclination and the door switch is actuated, the switch relay switches to the position (b), starts the oil pump, opens and closes the door, and the bypass valve is closed. Therefore, the piston that supplies pressurized oil to the primary pressure chamber of the hydraulic cylinder is pushed in the door opening direction and assists the door opening. When the switch relay is set to the position (a), the opening and closing valve of the opening pipe is opened and the door is opened at a low speed. As a result of this structure, the safety of opening and closing the hinged door of the tilted and stopped vehicle can be improved. However, in actual use, this technical solution does not meet the use requirements of modern vehicles due to its complex structure, low cost, and large space required for door layout. Utility Model Content

[0004] Purpose of the utility model: In order to address the deficiencies of the prior art, the utility model provides an auxiliary door opening actuator for a vehicle door, which has low cost and a size that is significantly smaller than the shell size used in the prior art, so that the space required for its arrangement in the door is smaller and easier to arrange.

[0005] Technical solution: In order to achieve the above purpose, the utility model provides an auxiliary door opening actuator for a vehicle door, which includes a B-pillar located on the vehicle body, a sheet metal installed on the vehicle door, a push rod mechanism passing through the sheet metal, a push rod cap fixed on the push rod mechanism, and a power mechanism vertically connected to the push rod mechanism, wherein the push rod mechanism and the power mechanism are installed on the vehicle door, and when the push rod fixed on the vehicle body is pushed out, it passes through the sheet metal through the push rod cap and abuts against the B-pillar;

[0006] The power mechanism drives the push rod mechanism to move telescopically so that the push rod cap fixed on the push rod mechanism pushes against the B-pillar to push the door in the opposite direction.

[0007] As a further preferred embodiment of the present invention, the push rod mechanism comprises a push rod housing, a main shaft and a push rod which are sequentially inserted into the push rod housing from the outside to the inside; the top of the push rod passes through a through hole on the sheet metal and then abuts against the B-pillar through a push rod cap, and the sheet metal is fastened to the push rod housing (8) through injection screws; the sheet metal is a part of the vehicle door, and the push rod passes through the sheet metal hole and is fixed to the sheet metal through bolts to realize the installation of the present invention.

[0008] As a further preferred embodiment of the present invention, the main shaft is connected to a power mechanism.

[0009] As a further preferred embodiment of the present invention, the power mechanism drives the main shaft to rotate clockwise or counterclockwise to achieve upward or downward linear movement of the push rod.

[0010] As a further preferred embodiment of the present invention, the power mechanism includes a motor, end covers and a worm respectively located at both ends of the motor, and a motor housing sleeved on the outside of the motor, the end covers and the worm.

[0011] As a further preferred embodiment of the present invention, the worm is located at the output end of the motor.

[0012] As a further preferred embodiment of the present invention, the worm is meshed with an external gear.

[0013] As a further preferred embodiment of the present invention, the distance that the push rod moves linearly in the main shaft is 30 mm to 70 mm.

[0014] As a further preferred embodiment of the present invention, the distance that the push rod moves linearly in the main shaft controls the opening angle of the door.

[0015] Beneficial effects: Compared with the prior art, the auxiliary door opening actuator for a vehicle door described in the utility model has lower material cost and processing cost, and its size is significantly smaller than the shell size used in the prior art. The external thread and the axis of the main shaft are perpendicular, so that the space required for its arrangement in the door is smaller and it is easier to arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation of the utility model;

[0017] Figure 2 It is a cross-sectional view of the push rod mechanism of the utility model;

[0018] Figure 3 It is a cross-sectional view of the power mechanism of the utility model;

[0019] Figure 4 It is a cross-sectional view of the internal structure of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the auxiliary door opening actuator for a vehicle door described in the utility model includes: a motor 1, a worm 2, an end cover 4, a main shaft 5, a push rod 6, a push rod cap 7, a push rod housing 8, a door sheet metal 9, a motor housing 10 and an injection screw 13.

[0022] The top of the push rod 6 passes through the through hole on the sheet metal 9 fixed to the car door and then abuts against the B-pillar on the car body through the push rod cap 7. The sheet metal 9 is fastened to the push rod housing 8 by the injection screws 13. The external thread 61 provided at the bottom of the push rod 6 meshes with the internal thread on the main shaft 5. The end of the main shaft 5 is provided with an external gear 51, and the inner surface of the external gear 51 meshes with the internal thread on the inner surface of the external thread 61.

[0023] Example

[0024] When the car door needs to be opened, the central control end sends a signal to the stepper motor 1. After receiving the start signal, the motor 1 rotates and drives the worm 2 connected to its output end to rotate clockwise. Because the worm 2 is engaged with the external gear 51, the external gear 51 driven by the worm 2 rotates. Due to the engagement of the internal thread inside the external gear 51 and the external thread 61 at the end of the push rod 6, the external gear 51 drives the push rod 6 to move upward in a straight line on the inner surface of the main shaft 5 when rotating. Finally, the push rod cap 7 fixed at the other end of the push rod 6 is pressed against the B-pillar to push the door in the opposite direction, so that the car door can be opened to a certain angle within the travel range of 30mm to 70mm.

[0025] When the door needs to be closed, the central control end sends a signal to the stepper motor 1. After receiving the start signal, the motor 1 rotates and drives the worm 2 connected to its output end to rotate counterclockwise. Because the worm 2 is meshed with the external gear 51, the external gear 51 driven by the worm 2 rotates. Due to the meshing of the internal thread inside the external gear 51 and the external thread 61 at the end of the push rod 6, the external gear 51 drives the push rod 6 to move linearly downward on the inner surface of the main shaft 5 when rotating. Finally, the push rod cap 7 fixed at the other end of the push rod 6 moves linearly toward the direction of the external gear 51, thereby closing the door with the push rod cap 7 against the B-pillar.

[0026] Since the main shaft 5 and the push rod 6 are both made of plastic, while the screw main shaft and the internal thread push rod used in the prior art are respectively made of 20Cr13 stainless steel and PA66_GF30% materials, the material cost of this technical solution has obvious advantages. The axial dimension of the push rod housing 8 is significantly smaller than the housing dimension used in the prior art, so that the space required for its arrangement in the door is smaller, it is easier to arrange, and it is more flexible to use.

[0027] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable technicians familiar with the technical field to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An auxiliary door opening actuator for a vehicle door, characterized in that: It comprises a B-pillar located on the vehicle body, a sheet metal (9) mounted on the vehicle door, a push rod mechanism penetrating the sheet metal (9), a push rod cap (7) fixed on the push rod mechanism, and a power mechanism vertically connected to the push rod mechanism, wherein the push rod mechanism and the power mechanism are mounted on the vehicle door, and when the push rod fixed on the vehicle body is pushed out, it passes through the sheet metal (9) through the push rod cap (7) and abuts against the B-pillar; The power mechanism drives the push rod mechanism to perform telescopic movement, thereby causing the push rod cap (7) fixed on the push rod mechanism to push the door in the opposite direction while pressing against the B-pillar.

2. The auxiliary door opening actuator for a vehicle door according to claim 1, characterized in that: The push rod mechanism comprises a push rod housing (8), a main shaft (5) and a push rod (6) which are sequentially inserted into the push rod housing (8) from the outside to the inside; the top of the push rod (6) passes through a through hole on a sheet metal (9) and then abuts against a B-pillar through a push rod cap (7); the sheet metal (9) is fastened to the push rod housing (8) by injection screws (13); The other end of the push rod (6) is provided with an external thread (61) which meshes with the internal thread on the main shaft (5); the end of the main shaft (5) is provided with an external gear (51); the inner surface of the external gear (51) meshes with the internal thread on the inner surface of the external thread (61); The rotation of the external gear (51) drives the main shaft (5) to rotate, and the push rod (6) meshing with the main shaft (5) moves linearly up and down under the rotation of the main shaft (5), thereby achieving the extension and reset of the push rod cap (7) on the sheet metal (9).

3. The auxiliary door opening actuator for a vehicle door according to claim 2, characterized in that: The main shaft (5) is connected to the power mechanism.

4. The auxiliary door opening actuator for a vehicle door according to claim 3, characterized in that: The power mechanism drives the main shaft (5) to rotate clockwise or counterclockwise, thereby achieving the upward or downward linear movement of the push rod (6).

5. The auxiliary door opening actuator for a vehicle door according to claim 1, characterized in that: The power mechanism comprises a motor (1), end covers (4) and a worm (2) respectively located at two ends of the motor (1), and a motor housing (10) sleeved on the outside of the motor (1), the end covers (4) and the worm (2).

6. The auxiliary door opening actuator for a vehicle door according to claim 5, characterized in that: The worm (2) is located at the output end of the motor (1).

7. The auxiliary door opening actuator for a vehicle door according to claim 6, characterized in that: The worm (2) meshes with the external gear (51).

8. The auxiliary door opening actuator for a vehicle door according to claim 2, characterized in that: The distance that the push rod (6) moves linearly in the main shaft (5) is 30 mm to 70 mm.

9. The auxiliary door opening actuator for a vehicle door according to claim 8, characterized in that: The distance that the push rod (6) moves linearly within the main shaft (5) controls the opening angle of the door.

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