CN212317736U

CN212317736U - Automobile-used back door control module

Info

Publication number: CN212317736U
Application number: CN202020588019.3U
Authority: CN
Inventors: 汪胜利; 谢伟伟
Original assignee: Huangshan Intelligent Automobile Co ltd
Current assignee: Huangshan Intelligent Automobile Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-01-08
Anticipated expiration: 2030-04-17

Abstract

The utility model relates to a back door control module for a vehicle, which comprises a motor, a transmission case, a transmission mechanism, a clutch mechanism and a push rod mechanism, wherein the transmission mechanism is arranged in the transmission case; the clutch mechanism comprises a cylinder body, an adjusting seat, a tension spring, a power take-off shaft and a clutch shaft, wherein the power take-off shaft is arranged at the center of the cylinder body; the barrel is provided with external threads and sleeved with an adjusting seat, internal threads are arranged inside the adjusting seat, and the adjusting seat is connected with the barrel through threads; the push rod mechanism comprises a shell, a bearing barrel, a sliding barrel, a ball screw pair and a push rod; the utility model discloses relieving the transmission between power take-off shaft and the separation and reunion axle when reverse moment of torsion is too big, avoiding too big reverse moment of torsion to transmit the epaxial of motor, avoiding the damage of motor, being worth wideling popularize.

Description

Automobile-used back door control module

Technical Field

The utility model belongs to the technical field of auto-parts, concretely relates to automobile-used back door control module.

Background

The automobile trunk is a box body which is arranged at the tail part of an automobile and used for storing articles, and is widely used in various small automobiles; current vapour car trunk, including box and case lid, the one end of case lid is fixed on the box through the pivot, and the other end mutually supports through connector link and box.

In order to facilitate the opening of the trunk in the prior art, a servo motor is generally arranged to drive an electric push rod to push the trunk to lift, the electric push rod is simple in structure and convenient to assemble, but is only suitable for an active switch, and once the trunk is manually closed manually, a large reverse torque can be generated on a driving motor of the electric push rod, so that a self-locking motor is easily damaged, and the damage of an electric lifting mechanism is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an avoid the manual automobile-used back door control module who closes the trunk door to electric lift mechanism's damage in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a back door control module for a vehicle comprises a motor, a transmission case, a transmission mechanism, a clutch mechanism and a push rod mechanism, wherein the transmission mechanism is arranged in the transmission case;

the clutch mechanism comprises a cylinder body, an adjusting seat, a tension spring, a power take-off shaft and a clutch shaft, wherein the center of the cylinder body is provided with the power take-off shaft, the power take-off shaft is connected with the cylinder body through a bearing, the front end of the power take-off shaft is provided with a truncated cone-shaped blind hole, the rear end of the clutch shaft is provided with a truncated cone-shaped raised head, and the truncated cone-shaped raised head is embedded into the truncated cone-shaped blind hole and is in interference fit with the truncated cone-shaped;

the cylinder body is provided with external threads and is sleeved with an adjusting seat, internal threads are arranged inside the adjusting seat, the adjusting seat is connected with the cylinder body through threads, a tension spring seat is arranged on a clutch shaft, a tension spring is arranged between the tension spring seat and the adjusting seat, the clutch shaft is a stepped shaft and comprises an upper shaft section, a middle shaft section and a lower shaft section, the diameter of the middle shaft section is larger than that of the upper shaft section and that of the lower shaft section, the tension spring seat is arranged on the upper shaft section and is in clearance fit with the upper shaft section, and a bearing is arranged between the tension spring seat and the upper shaft section;

the push rod mechanism comprises a shell, a bearing barrel, a sliding barrel, a ball screw pair and a push rod, wherein the bearing barrel is fixedly arranged at the rear end of the shell, the sliding barrel in clearance fit with the bearing barrel is arranged in the bearing barrel, the sliding barrel is sleeved on an upper shaft section of a clutch shaft, a thrust ball bearing is arranged between the sliding barrel and the upper shaft section, the front end of the upper shaft section is connected with the rear end of a screw rod of the ball screw pair through a spline, the front part of the screw rod of the ball screw pair is inserted into the center of the push rod, the center of the push rod is provided with a hole in clearance fit with the screw rod of the ball screw pair, a nut of the ball screw pair is fixedly connected with the rear end of the push rod, the front end of.

As the utility model discloses a further optimization scheme, drive mechanism includes band pulley, lower band pulley and transmission shaft, and the output shaft of motor extends to in the casing to fixed band pulley that sets up, band pulley under going up the band pulley and passing through the belt connection, on lower band pulley was fixed to be located the transmission shaft, the transmission shaft passed through the bearing and connects the casing. The motor drives the upper belt wheel to rotate, the upper belt wheel drives the lower belt wheel and the transmission shaft to rotate, and power is output through the transmission shaft.

As the utility model discloses a further optimization scheme, the inside spout that sets up along the push rod axial that is equipped with of casing is equipped with on the vice nut of ball screw with spout clearance fit's slider, in this spout of slider embedding. The sliding groove is matched with the sliding block to guide the movement of the nut and limit the rotation of the nut.

As the utility model discloses a further optimization scheme, be equipped with the bearing between ball screw pair's lead screw and the casing.

As the utility model discloses a further optimization scheme, be equipped with the bearing between power take-off shaft and the barrel.

The beneficial effects of the utility model reside in that:

1) the utility model discloses relieve the transmission between power take-off shaft and the separation and reunion axle when reverse moment of torsion is too big, avoid too big reverse moment of torsion to transmit the epaxial of motor, avoid the damage of motor.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in the first embodiment;

fig. 2 is a schematic structural view of a clutch mechanism according to the first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a clutch shaft according to the first embodiment of the present invention.

In the figure: the device comprises a motor 1, a transmission case 2, a cylinder 3, an adjusting seat 4, a tension spring seat 5, a tension spring 6, a power take-off shaft 7, a clutch shaft 8, an upper shaft section 81, a middle shaft section 82, a lower shaft section 83, a shell 9, a bearing cylinder 10, a sliding cylinder 11, a ball screw pair 12, a push rod 13, an upper belt wheel 14, a lower belt wheel 15 and a transmission shaft 16.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, "a plurality" or "a plurality" means two or more unless otherwise specified.

Example one

As shown in fig. 1-3, a back door control module for a vehicle includes a motor 1, a transmission case 2, a transmission mechanism, a clutch mechanism and a push rod mechanism, wherein the transmission mechanism is disposed in the transmission case 2, the motor 1 is connected with the clutch mechanism through the transmission mechanism, and the clutch mechanism is connected with the push rod mechanism;

the clutch mechanism comprises a cylinder body 3, an adjusting seat 4, a tension spring seat 5, a tension spring 6, a power take-off shaft 7 and a clutch shaft 8, wherein the center of the cylinder body 3 is provided with the power take-off shaft 7, the power take-off shaft 7 is connected with the cylinder body 3 through a bearing, the front end of the power take-off shaft 7 is provided with a truncated cone-shaped blind hole, the rear end of the clutch shaft 8 is provided with a truncated cone-shaped raised head, and the truncated cone-shaped raised head is embedded into the truncated cone-shaped blind hole and is in interference fit with the truncated cone-shaped;

the cylinder body 3 is provided with external threads and is sleeved with an adjusting seat 4, internal threads are arranged inside the adjusting seat 4, the adjusting seat 4 is connected with the cylinder body 3 through threads, a tension spring seat 5 is arranged on a clutch shaft 8, a tension spring 6 is arranged between the tension spring seat 5 and the adjusting seat 4, the clutch shaft 8 is a stepped shaft and comprises an upper shaft section 81, a middle shaft section 82 and a lower shaft section 83, the diameter of the middle shaft section 82 is larger than that of the upper shaft section 81 and the lower shaft section 83, the tension spring seat 5 is arranged on the upper shaft section 81 and is in clearance fit with the upper shaft section 81, and a bearing is arranged between the tension spring seat 5 and the upper shaft section 81;

the push rod mechanism comprises a shell 9, a bearing barrel 10, a sliding barrel 11, a ball screw pair 12 and a push rod 13, wherein the bearing barrel 10 is fixedly arranged at the rear end of the shell 9, the sliding barrel 11 in clearance fit with the bearing barrel 10 is arranged in the bearing barrel 10, the sliding barrel 11 is sleeved on an upper shaft section 81 of a clutch shaft 8, a thrust ball bearing is arranged between the sliding barrel 11 and the upper shaft section 81, the front end of the upper shaft section 81 is connected with the rear end of a screw rod of the ball screw pair 12 through a spline, the front part of the screw rod of the ball screw pair 12 is inserted into the center of the push rod 13, the center of the push rod 13 is provided with a hole in clearance fit with the screw rod of the ball screw pair 12, a nut of the ball screw pair 12 is fixedly connected with the rear end of the push rod 13, the front end of the push.

Further, drive mechanism includes band pulley 14, lower band pulley 15 and transmission shaft 16, and the output shaft of motor 1 extends to in the casing 9 to fixed band pulley 14 that sets up, band pulley 15 under band pulley 14 passes through the belt connection, and lower band pulley 15 is fixed to be located on transmission shaft 16, and transmission shaft 16 passes through bearing connection casing 9. The motor 1 drives the upper belt wheel 14 to rotate, the upper belt wheel 14 drives the lower belt wheel 15 and the transmission shaft 16 to rotate, and power is output through the transmission shaft 16.

Furthermore, a sliding groove is formed in the shell 9 along the axial direction of the push rod 13, a sliding block in clearance fit with the sliding groove is arranged on a nut of the ball screw pair 12, and the sliding block is embedded into the sliding groove. The sliding groove is matched with the sliding block to guide the movement of the nut and limit the rotation of the nut.

Further, a bearing is provided between the screw of the ball screw pair 12 and the housing 9.

Further, a bearing is arranged between the power take-off shaft 7 and the cylinder 3.

Further, the motor 1 is a servo motor with self-locking.

It should be noted that the screw of the ball screw pair 12 is a non-self-locking threaded screw, and there is no self-locking.

Due to the fact that the clutch shaft 8 is connected with the screw rod through the spline, the clutch shaft 8 can move for a certain distance along the axial direction relative to the screw rod and cannot be separated from the screw rod.

The utility model discloses a structural feature and theory of operation: the utility model replaces the position of the electric push rod 13 of the existing trunk door, the front end is hinged with the trunk door, and the rear end is hinged with the vehicle body;

the motor 1 drives the power take-off shaft 7 to rotate through the transmission mechanism, the power take-off shaft 7 drives the clutch shaft 8 to rotate, the clutch shaft 8 drives the screw rod of the ball screw pair 12 to rotate, and then the nut which drives the ball screw pair 12 through the screw action moves back and forth, and drives the push rod 13 to move back and forth, so that the stretching of the push rod 13 is realized, and then the switch of the trunk door is pushed.

The power taking shaft 7 and the clutch shaft 8 in the clutch mechanism generate friction force through interference fit of the truncated cone-shaped raised head and the truncated cone-shaped blind hole and pressure between the power taking shaft 7 and the clutch shaft 8, so that the friction force transmits torque between the power taking shaft 7 and the clutch shaft 8, the maximum torque transmitted between the power taking shaft 7 and the clutch shaft 8 is limited due to limited friction force, if the trunk door is closed by manual forcible force, the push rod 13 is compressed to give a reverse torque to the lead screw, the lead screw gives the reverse torque to the clutch shaft 8, when the reverse torque is larger than the maximum torque between the power taking shaft 7 and the clutch shaft 8, the transmission connection between the power taking shaft 7 and the clutch shaft 8 is disconnected, the clutch shaft 8 rotates independently at the moment, the reverse torque is prevented from being transmitted to the motor 1, and the damage of the trunk door to the motor 1 caused by manual forcible closing.

Because the weight and the structural style of various trunk doors are different, the utility model discloses need the maximum torque of adjustment clutching mechanism when being applied to the trunk door of different vehicles, the rotatory fit screw effect through the adjustment seat makes the adjustment seat reciprocate, interval between adjustment seat and the extension spring seat 5, the stay cord length of adjustment extension spring 6, thereby adjustment extension spring 6 elasticity, the axial pressure between adjustment power take-off 7 and the separation and reunion axle 8, increase or reduce the two frictional force, thereby adjust maximum torque, avoid the maximum torque undersize to lead to unable trunk door that promotes, it is great to avoid the too big required application of force of manual closing trunk door that leads to of maximum torque again.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a back door control module for vehicle which characterized in that: the device comprises a motor, a transmission case, a transmission mechanism, a clutch mechanism and a push rod mechanism, wherein the transmission mechanism is arranged in the transmission case;

2. The back door control module for vehicle as claimed in claim 1, wherein: the transmission mechanism comprises an upper belt wheel, a lower belt wheel and a transmission shaft, an output shaft of the motor extends into the shell and is fixedly provided with the upper belt wheel, the upper belt wheel is connected with the lower belt wheel through a belt, the lower belt wheel is fixedly arranged on the transmission shaft, and the transmission shaft is connected with the shell through a bearing.

3. The back door control module for vehicle as claimed in claim 1, wherein: the inside spout that sets up along the push rod axial that is equipped with of casing, be equipped with on the nut of ball screw pair and spout clearance fit's slider, the slider imbeds in this spout.

4. The back door control module for vehicle as claimed in claim 1, wherein: and a bearing is arranged between the screw rod of the ball screw pair and the shell.

5. The back door control module for vehicle as claimed in claim 1, wherein: and a bearing is arranged between the power take-off shaft and the cylinder body.