An electrically controlled door lock unlocking electric drive assembly

Abstract

This utility model discloses an electric drive assembly for unlocking an electronically controlled door lock, including a motor. A drive gear is mounted on the motor's output shaft, and the drive gear is installed inside a gear housing. The motor is installed inside a motor housing, with the bottom of the gear housing and the top of the motor housing fixedly connected by screws. A drive rack that meshes with the drive gear is installed inside the gear housing. The drive rack has guide holes along its length, and a guide strip is located at the bottom of the gear housing cavity, inside the guide holes. Two mounting slots are located on the side of the drive rack away from the drive gear, one of which houses a return spring. The electric drive assembly for unlocking provided by this utility model solves the problems of inaccurate lever transmission and easy jamming, as well as the problems of poor versatility and low adaptability of drive assemblies.

Description

Technical Field

[0001] This utility model relates to an electric drive assembly for unlocking an electronically controlled door lock, specifically, to an electric drive assembly for unlocking a door lock in the cockpit of non-road machinery, belonging to the field of non-road machinery cockpit technology. Background Technology

[0002] The door locks of non-road machinery cabs must ensure reliable door closure while also ensuring convenient door opening. With the rapid development of large-scale machinery technology and the advancement of electronic control and automation technology, non-road machinery is gradually placing greater emphasis on driving experience and automated control.

[0003] The electric drive assemblies of traditional non-road mechanical door locks generally suffer from the following technical problems during use: The levers in traditional electric drive assemblies are prone to radial rotation or wobbling during movement, resulting in inaccurate transmission, low power transmission efficiency, and even interference with surrounding components, causing them to jam.

[0004] Different lock body models may have different directions of movement of the unlocking trigger, while the lever of the traditional electric drive assembly can often only achieve movement in one direction. Different drive assemblies need to be developed for different lock bodies, which increases design and inventory costs.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing an electric drive assembly for unlocking an electronically controlled door lock. It can solve the problems of inaccurate and jammed toggle transmission, as well as the problems of poor versatility and low adaptability of the drive assembly.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: An electric drive assembly for unlocking an electronically controlled door lock includes a motor, a drive gear mounted on the output shaft of the motor, the drive gear being installed inside a gear housing, a drive rack meshing with the drive gear inside the gear housing, a guide hole along the length of the drive rack, a guide bar located inside the guide hole at the bottom of the inner cavity of the gear housing, and two mounting slots on the side of the drive rack away from the drive gear, one of which houses a return spring.

[0008] Furthermore, the motor is installed inside the motor housing, and the bottom of the gear housing is fixedly connected to the top of the motor housing with screws.

[0009] Furthermore, one end of the return spring abuts against the inner wall of the gear housing, and the other end abuts against the mounting groove.

[0010] Furthermore, the bottom of the drive rack is provided with a lever block, which moves synchronously with the drive rack. The lever block extends out from the bottom of the gear housing and is connected to the unlocking mechanism of the lock body.

[0011] Furthermore, a dust cover is installed at the connection between the lever and the bottom of the gear housing.

[0012] Furthermore, a sealing cap is fastened to the top of the gear housing.

[0013] Furthermore, connectors are connected to the bottom of the motor via wires.

[0014] Furthermore, the guide strip and the gear housing are integrally formed.

[0015] Furthermore, the two mounting slots are arranged symmetrically from left to right.

[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: The precision guiding mechanism composed of the guide bar and the guide slide hole eliminates jamming and wear in the rack movement, ensuring that the lever can accurately act on the same position of the unlocking trigger every time, with crisp and clean action, solving the problems of inaccurate lever transmission and easy jamming; The symmetrical return spring mounting slots allow for selective installation of a return spring in one of the slots, enabling the toggle block to move in two directions. This greatly improves the versatility of the assembly and makes it compatible with lock bodies of different structures.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the unlocking electric drive assembly; Figure 2 This is a schematic diagram of the internal structure of the unlocking electric drive assembly; Figure 3 This is a cross-sectional view of the unlocking electric drive assembly.

[0019] In the diagram, 201-motor housing, 202-gear housing, 203-motor, 204-drive gear, 205-drive rack, 206-guide slide hole, 207-guide strip, 208-mounting slot, 209-push block, 2010-return spring, 2011-dust cover, 2012-connector. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0021] like Figures 1-3As shown in the figure, this utility model provides an electric drive assembly for unlocking an electric door lock, including a motor 203, a drive gear 204 mounted on the output shaft of the motor 203, the drive gear 204 being installed inside a gear housing 202, the motor 203 being installed inside a motor housing 201, and the bottom of the gear housing 202 being fixedly connected to the top of the motor housing 201 by screws.

[0022] The gear housing 202 houses a drive rack 205 that meshes with the drive gear 204. The drive rack 205 has a guide hole 206 along its length. A guide strip 207, integrally formed with the drive rack 205, is located at the bottom of the inner cavity of the gear housing 202, inside the guide hole 206. The drive rack 205 can slide back and forth along the guide strip 207, effectively preventing radial rotation or wobbling during movement and ensuring that it moves strictly along a predetermined linear path.

[0023] The drive rack 205 has two symmetrically arranged mounting slots 208 on the side away from the drive gear 204. A return spring 2010 is installed in one of the mounting slots 208. One end of the return spring 2010 abuts against the inner wall of the gear housing 202, and the other end abuts against the mounting slot 208. The return spring 2010 provides power for the return of the drive rack 205.

[0024] Both mounting slots 208 can be used to install return springs 2010. By reversing the positive and negative poles of the motor 203, the direction of movement of the drive rack 205 can be changed, making it easier for the toggle block 209 to move in both directions.

[0025] The bottom of the drive rack 205 is provided with a lever 209. The lever 209 moves synchronously with the drive rack 205. The lever 209 extends out from the bottom of the gear housing 202 and is connected to the unlocking mechanism of the lock body. The lever 209 drives the unlocking mechanism to swing, thereby unlocking.

[0026] A sealing cover 2013 is fastened to the top of the gear housing 202, and a dust cover 2011 is installed at the connection between the lever 209 and the bottom of the gear housing 202. By setting the sealing cover 2013 and the dust cover 2011, a complete sealed cavity is formed to prevent external dust from entering the gear mechanism inside the gear housing 202. By keeping it clean and lubricated, the gear mechanism is ensured to operate smoothly for a long time.

[0027] The bottom of motor 203 is connected to connector 2012 via wires.

[0028] The specific working principle of this utility model is as follows: A small DC motor drives a rack and pinion mechanism, converting the motor's rotational motion into precise linear motion of the rack. A lever at the bottom of the rack then actuates the lock's unlocking trigger, thus unlocking the lock. When the motor is powered off, a return spring returns the entire mechanism to its initial position, and a sealing structure ensures its reliability and lifespan.

[0029] The transmission mechanism composed of gears and racks efficiently and accurately converts rotary motion into linear motion. Its compact structure makes it ideal for short-stroke push-pull actions.

[0030] The precision guiding mechanism, consisting of the guide bar and the guide slide hole, eliminates jamming and wear during rack movement, ensuring that the lever can accurately act on the same position of the unlocking trigger every time, with a crisp and clean action.

[0031] By selectively installing return springs in the two mounting slots and reversing the positive and negative poles of the motor, the toggle block can move in both directions, greatly improving the versatility of the assembly and allowing it to be adapted to lock bodies of different structures.

[0032] By using a sealing cover and a dust cover to form a relatively sealed cavity outside the gear housing, it effectively prevents foreign objects such as dust and hair from entering the precision transmission components, avoiding jamming, wear, or lubrication failure caused by contamination, and significantly improving product life and stability.

[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. An electric drive assembly for unlocking an electronically controlled door lock, comprising a motor (203), characterized in that: A drive gear (204) is mounted on the output shaft of the motor (203). The drive gear (204) is installed inside the gear housing (202). A drive rack (205) that meshes with the drive gear (204) is installed inside the gear housing (202). A guide slide hole (206) is provided inside the drive rack (205) along its length. A guide strip (207) is provided at the bottom of the inner cavity of the gear housing (202). The guide strip (207) is located inside the guide slide hole (206). There are two mounting slots (208) on the side of the drive rack (205) away from the drive gear (204). A return spring (2010) is installed in one of the mounting slots (208).

2. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The motor (203) is installed inside the motor housing (201), and the bottom of the gear housing (202) is fixedly connected to the top of the motor housing (201) by screws.

3. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: One end of the return spring (2010) abuts against the inner wall of the gear housing (202), and the other end abuts against the mounting groove (208).

4. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The bottom of the drive rack (205) is provided with a paddle block (209), which moves synchronously with the drive rack (205) and protrudes from the bottom of the gear housing (202).

5. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 4, characterized in that: A dust cover (2011) is installed at the bottom connection between the lever (209) and the gear housing (202).

6. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The top of the gear housing (202) is fitted with a sealing cap (2013).

7. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The bottom of the motor (203) is connected to a connector (2012) via a wire.

8. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The guide strip (207) and the gear housing (202) are integrally formed.

9. The unlocking electric drive assembly of an electronically controlled door lock as described in claim 1, characterized in that: The two mounting slots (208) are arranged symmetrically on the left and right.

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