Pull-in driver with reset signal

Abstract

The utility model discloses a pull-in driver with a reset signal. The pull-in driver comprises a housing; the driving unit is arranged on the shell and has a releasing state and a tensioning state; the signal switch unit is arranged in the shell and comprises a signal switch and a signal sliding block, and the signal sliding block and the driving unit are arranged in a linkage mode; when the driving unit is in the tensioning state, the self-tensioning state is switched to the releasing state, and the self-releasing state is switched to the tensioning state, the signal sliding block abuts against the signal switch. When the driving unit enters the release state, the signal sliding block is separated from the signal switch. According to the self-suction door lock, the structure that a traditional self-suction door lock achieves suction and resetting through positive and negative rotation of a motor is changed, the disadvantage brought to the strength of a shell of the suction driver and the service life of the motor is solved, and the best time for resetting and stopping of the suction driver is obtained through a signal switch in the suction driver; the destructive force of the driving unit to the shell during locked-rotor is eliminated, the motor is better protected, and the service life of the pull-in driver is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile locks, in particular to a pull-in driver with a reset signal. Background Art

[0002] With the development of the automobile industry and the upgrading of consumption, the application of self-priming door locks in passenger cars has gradually increased. Self-priming door locks generally use a suction driver to provide power to the lock body to achieve the suction action of the door lock. After the suction action is completed, the suction driver needs to be reset immediately to prepare for the next suction action; in order to obtain greater suction force while taking into account the miniaturization of the volume, the designer will use a worm gear drive structure with a large transmission ratio, and realize suction and reset through the forward and reverse rotation of the motor. The reset stop of the suction driver is generally monitored by time limit or the upper limit of the stall current of the motor reversal, which brings adverse factors to the strength of the suction driver housing and the service life of the motor. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a suction driver with a reset signal, which obtains the best time to reset and stop the suction driver through a signal switch inside the suction driver, eliminating the destructive force of the drive unit on the shell when it is blocked.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a pull-in driver with a reset signal, comprising:

[0005] case;

[0006] A driving unit is arranged in the housing and has a release state and a tension state;

[0007] A signal switch unit is arranged in the housing, and comprises a signal switch and a signal slider, wherein the signal slider is arranged in linkage with the driving unit;

[0008] When the drive unit is in a tensioned state, in a process of switching from a tensioned state to a released state, or in a process of switching from a released state to a tensioned state, the signal slider and the signal switch are against each other;

[0009] When the driving unit enters a released state, the signal slider is disengaged from the signal switch.

[0010] Furthermore, it also includes an elastic reset member that abuts against the signal slider, which is used to drive the signal slider to maintain a state of abutting against the signal switch.

[0011] Furthermore, the signal slider includes a slider body, and a stopper and a signal switch pressing portion respectively arranged at two ends of the slider body, the stopper forms a mounting hole, and part of the drive unit can pass through the mounting hole.

[0012] Further, the stopper is vertically connected to the first side surface of the slider body, the signal switch pressing part is vertically connected to the second side surface of the slider body, and the first side surface and the second side surface are adjacent to each other.

[0013] Further, the driving unit includes a lead screw, a worm gear for driving the lead screw to move, a worm for driving the worm gear to rotate, and a motor for driving the worm to rotate. The end of the lead screw has a zip fastener fixing part, and the zip fastener fixing part passes through the mounting hole.

[0014] Further, the signal switch pressing part has a fixing post, and the elastic reset sleeve is sleeved on the fixing post.

[0015] Further, a shoulder is formed between the end of the lead screw and the zip fastener fixing part.

[0016] Further, a copper circuit is provided inside the housing. One end of the copper circuit is connected to the signal switch and the motor, and the other end of the copper circuit can be connected to the vehicle body circuit.

[0017] Further, radial bearings are provided at both ends of the worm gear to limit the movement of the worm gear.

[0018] Further, the housing forms a receiving cavity that defines the moving stroke of the signal switch pressing part.

[0019] The beneficial effects of the present utility model are as follows: It changes the structure of the traditional self - suction door lock that realizes suction and reset through the forward and reverse rotation of the motor, solves the disadvantages brought to the strength of the suction drive housing and the service life of the motor, obtains the best timing for the suction drive to reset and stop through the signal switch inside the suction drive, eliminates the destructive force of the drive unit on the housing during stall, and at the same time better protects the motor and extends the service life of the suction drive. Description of the Drawings

[0020] Figure 1 is a schematic internal structure diagram of the present utility model Figure 1 , at this time, the driving unit is in the process of switching between the tensioned state and the released state.

[0021] Figure 2 is a schematic internal structure diagram of the present utility model Figure 2 , at this time, the driving unit is in the tensioned state.

[0022] Figure 3 is a schematic internal structure diagram of the present utility model Figure 3 , at this time, the driving unit is in the released state.

[0023] Figure 4 is a perspective view of the signal slider and the lead screw in the present utility model.

[0024] Figure 5It is a schematic diagram of the partial internal structure of the utility model.

[0025] Among them, 1-shell, 11-accommodating chamber, 12-step portion, 2-driving unit, 21-screw, 211-zipper fixing portion, 22-worm gear, 23-worm, 24-motor, 25-radial bearing, 3-signal switch unit, 31-signal switch, 32-signal slider, 321-slider body, 322-block, 323-signal switch pressing portion, 324-mounting hole, 325-fixing column, 326-boss shoulder, 33-elastic reset member. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] like Figures 1 - 5 As shown, a suction driver with a reset signal includes a shell 1, a driving unit 2 arranged in the shell 1, and a signal switch unit 3 arranged in the shell 1. The signal switch unit 3 includes a signal switch 31, a signal slider 32, and an elastic reset member 33 abutting against the signal slider 32. The signal slider 32 is linked to the driving unit 2.

[0028] The drive unit 2 has a released state and a tensioned state. When the drive unit 2 is in the tensioned state, in the process of switching from the tensioned state to the released state, and in the process of switching from the released state to the tensioned state, the signal slider 32 and the signal switch 31 are against each other, that is, the signal slider 32 presses the signal switch 31; when the drive unit 2 enters the released state, the signal slider 32 disengages from the signal switch 31, that is, the signal switch 31 is triggered, and feedback is sent to the vehicle body circuit that the pull-in driver has been completely reset.

[0029] Specifically, Figure 4As shown, the signal slider 32 includes a slider body 321, a stop block 322 and a signal switch pressing part 323 respectively arranged at both ends of the slider body 321. The stop block 322 is formed with a mounting hole 324. In this embodiment, the stop block 322 is vertically connected to the first side surface of the slider body 321, and the signal switch pressing part 323 is vertically connected to the second side surface of the slider body 321. The first side surface and the second side surface are adjacent to each other, that is, the stop block 322 and the signal switch pressing part 323 are respectively located on the two side surfaces at both ends of the slider body 321. One side of the signal switch pressing part 323 facing the stop block 322 has a fixing post 325, and the elastic reset piece is sleeved on the fixing post 325 to prevent it from shifting. In order to limit the moving stroke of the signal switch pressing part 323 and prevent it from excessively shifting, a receiving cavity 11 is formed in the housing 1, and the signal switch pressing part 323 can only translate left and right within the range defined by the receiving cavity 11.

[0030] The driving unit 2 includes a lead screw 21, a worm gear 22 for driving the lead screw 21 to move, a worm 23 for driving the worm gear 22 to rotate, and a motor 24 for driving the worm 23 to rotate. The worm gear 22 can only rotate and will not move relative to the housing 1. In order to limit the movement of the worm gear 22, radial bearings 25 are provided at both ends of the worm gear 22, and the radial bearings 25 are assembled in the corresponding bearing seats of the housing 1. The motor 24 drives the worm 23 to drive the worm gear 22 to rotate. The worm gear 22 is limited to only rotate around the center of the radial bearing 25 and cannot make longitudinal displacement. The inner hole of the worm gear 22 is provided with an internal thread to cooperate with the lead screw 21, and can drive the lead screw 21 to displace horizontally.

[0031] The end of the lead screw 21 has a zip fastener fixing part 211, and the zip fastener fixing part 211 passes through the mounting hole 324. The zip fastener fixing part 211 is used for fixedly connecting the zip fastener. A shoulder 326 is formed between the end of the lead screw 21 and the zip fastener fixing part 211.

[0032] A plurality of copper circuits are arranged in the housing 1. One end of the copper circuit is respectively connected to the signal switch 31 and the motor 24, and the other end of the copper circuit can be connected to the vehicle body circuit for signal communication and driving the motor 24.

[0033] As Figure 2 shown, when the driving unit 2 is in a tightened state, the signal slider 32 moves in the direction close to the signal switch 31 under the action of the elastic reset member 33, so that the signal switch pressing part 323 presses against the signal switch 31;

[0034] As Figure 1As shown, during the process of the driving unit 2 switching from the tensioned state to the released state, or from the released state to the tensioned state, although the zip fastener fixing portion 211 passes through the mounting hole 324 of the stopper 322, before the shoulder 326 contacts the stopper 322, under the action of the elastic reset member 33, the signal switch pressing portion 323 has been in a state of pressing against the signal switch 31;

[0035] As Figure 3 shown, until the lead screw 21 moves to the left, the shoulder 326 drives the stopper 322 to move to the left until the stopper falls into the stepped portion 12 in the housing 1, the elastic reset member 33 is compressed, and the signal slider 32 disengages from the signal switch 31, that is, the signal switch 31 is triggered to feedback a signal to the vehicle body circuit that the suction actuator has been fully reset, so as to facilitate the next operation.

[0036] The above specific embodiments are used to explain and illustrate the present invention, rather than limiting the present invention. Any modifications and changes made to the present invention within the spirit and scope of the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A pull-in driver with a reset signal, characterized in that: include: Housing (1); A drive unit (2) is arranged on the housing (1) and has a released state and a tensioned state; A signal switch unit (3) is arranged in the housing (1), comprising a signal switch (31) and a signal slider (32), wherein the signal slider (32) is arranged in linkage with the drive unit (2); When the drive unit (2) is in a tensioned state, in the process of switching from the tensioned state to the released state, and in the process of switching from the released state to the tensioned state, the signal slider (32) and the signal switch (31) abut against each other; When the driving unit (2) enters a released state, the signal slider (32) is separated from the signal switch (31).

2. The pull-in driver with a reset signal according to claim 1, characterized in that: It also includes an elastic reset member (33) that abuts against the signal slider (32) and is used to drive the signal slider (32) to maintain a state of abutting against the signal switch (31).

3. The pull-in driver with a reset signal according to claim 2, characterized in that: The signal slider (32) comprises a slider body (321), and a stopper (322) and a signal switch pressing portion (323) respectively arranged at two ends of the slider body (321); the stopper (322) forms a mounting hole (324), and a portion of the drive unit (2) can pass through the mounting hole (324).

4. The pull-in driver with a reset signal according to claim 3, characterized in that: The stopper (322) is vertically connected to a first side surface of the slider body (321), and the signal switch pressing portion (323) is vertically connected to a second side surface of the slider body (321), and the first side surface and the second side surface are adjacently arranged.

5. The pull-in driver with a reset signal according to claim 3, characterized in that: The drive unit (2) comprises a screw (21), a worm wheel (22) for driving the screw (21) to move, a worm (23) for driving the worm wheel (22) to rotate, and a motor (24) for driving the worm (23) to rotate, wherein the end of the screw (21) has a zipper fixing portion (211), and the zipper fixing portion (211) is inserted into the mounting hole (324).

6. The pull-in driver with a reset signal according to claim 3, characterized in that: The signal switch pressing portion (323) has a fixing column (325), and the elastic reset member (33) is sleeved on the fixing column (325).

7. The pull-in driver with a reset signal according to claim 5, characterized in that: A boss (326) is formed between the end of the screw rod (21) and the zipper fixing portion (211).

8. The pull-in driver with a reset signal according to claim 5, characterized in that: A copper circuit is provided in the housing (1), one end of the copper circuit is connected to the signal switch (31) and the motor (24), and the other end of the copper circuit can be connected to the vehicle body circuit.

9. The pull-in driver with a reset signal according to claim 5, characterized in that: Radial bearings (25) are provided at both ends of the worm wheel (22) to limit the movement of the worm wheel (22).

10. The pull-in driver with a reset signal according to claim 3, characterized in that: The housing (1) forms a receiving chamber (11) that limits the moving stroke of the signal switch pressing portion (323).

Images