Motor lock

Abstract

The invention provides a motor lock, and relates to the technical field of locks, the motor lock comprises a lock body and a lock disc matched with the lock body for use, the lock disc is provided with a lock groove, the lock body comprises a driving piece and an L-shaped rack connected with the driving piece, the L-shaped rack is connected with a spring bolt part, and the spring bolt part is connected with the lock groove. The spring bolt part is driven by the driving piece and the L-shaped rack to move so as to perform locking and unlocking actions; the L-shaped rack comprises a rack body connected with the driving piece and a transmission plate connected with the spring bolt part, one end of the rack body is connected with the transmission plate, and an included angle A is formed between the rack body and the transmission plate. The L-shaped rack is arranged, the L-shaped rack is composed of the rack body and the transmission plate, the included angle A is formed between the rack body and the transmission plate, and by changing the angle between the rack body and the transmission plate, the stroke of the transmission plate can be changed under the condition that the stroke of the rack body is kept unchanged, namely, the driving stroke of the transmission plate to the locking part is changed; therefore, various different travel requirements can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and more particularly to an electric motor lock. Background Art

[0002] In the field of hub motor technology, the motor lock, as an important component for ensuring the safe operation of the motor and realizing specific control functions, its design and application are crucial; Currently, in the motor lock system that uses Hall sensors for position recognition, there is a key technical problem, that is, when installing the Hall sensors, it is necessary to meet the requirement of the minimum distance between at least two Hall sensors. This requirement limits the layout flexibility of the internal components of the motor lock, making it necessary to strictly follow specific space constraints during the design process. Different application scenarios have different requirements for the locking pin stroke of the motor lock; for example, in some occasions with extremely high safety requirements, a longer locking pin stroke is required to ensure the reliable locking of the motor; while in some scenarios with high requirements for space and response speed, a shorter locking pin stroke may be needed. However, the existing motor lock designs are difficult to flexibly adapt to various different locking pin stroke requirements while meeting the Hall stroke requirements. Therefore, we make improvements and propose an electric motor lock. Summary of the Invention

[0003] The present invention provides an electric motor lock, including a lock body and a lock disc used in cooperation with the lock body. A lock groove is provided on the lock disc. The lock body includes a driving member and an L-shaped rack connected to the driving member. The L-shaped rack is connected with a locking tongue portion, and the locking tongue portion moves under the drive of the driving member and the L-shaped rack to perform locking and unlocking actions; The L-shaped rack includes a rack main body connected to the driving member and a transmission plate connected to the locking tongue portion. One end of the rack main body is connected to the transmission plate, and there is an angle A between the rack main body and the transmission plate. By changing the angle of the angle A, the stroke ratio between the rack main body and the transmission plate is changed, so as to realize the change of the driving stroke ratio of the L-shaped rack and the stroke ratio of the locking tongue portion; When locking, the driving member drives the rack main body to move outwards and the transmission plate pushes the locking tongue portion to move, so as to realize the insertion of the locking tongue portion into the lock groove; when unlocking, the driving member drives the rack main body to move inwards in the reverse direction to relieve the driving force on the transmission plate, and the locking tongue portion is separated from the lock groove.

[0004] As a preferred technical solution of the present application, the lock body further includes a motor seat and a motor cover connected to the motor seat. A second limiting groove is provided in the motor seat, and the rack main body is slidably connected to the inner wall of the second limiting groove. The driving member includes a driving motor installed in the motor seat, and an output shaft of the driving motor is connected with a gear, and the gear meshes with the rack main body.

[0005] As a preferred technical solution of the present application, a Hall plate parallel to the rack body is installed in the motor base. Hall elements are provided on the Hall plate, induction magnets are provided on the rack body, and the Hall elements are on the moving track of the induction magnets.

[0006] As a preferred technical solution of the present application, a first limiting groove is provided in the motor base. The locking tongue portion includes a hollow slider slidably connected in the first limiting groove. One side of the hollow slider is slidably connected to the transmission plate. A retaining disc is slidably connected in the hollow slider. A locking pin is fixedly installed on the side of the retaining disc away from the transmission plate. The side of the locking pin away from the retaining disc sequentially passes through the hollow slider and the motor base.

[0007] As a preferred technical solution of the present application, a first spring is sleeved on the outer surface of the locking pin and is located outside the hollow slider. The two ends of the first spring are respectively abutted against the hollow slider and the first limiting groove. A second spring is provided in the hollow slider. The two ends of the second spring are respectively abutted against the retaining disc and the hollow slider.

[0008] As a preferred technical solution of the present application, the second spring is used to provide a thrust for the locking pin to extend outwards, and the first spring is used to provide a thrust for the locking pin to retract inwards.

[0009] As a preferred technical solution of the present application, a control main board is further installed in the motor base. The control main board is connected to the Hall plate. The control main board is connected with a signal line. One end of the signal line passes through the motor base and extends to the outside of the motor base.

[0010] As a preferred technical solution of the present application, a mounting plate is connected to the outer surface of the motor base, and a through hole is provided on the mounting plate.

[0011] As a preferred technical solution of the present application, a groove is provided on the retaining disc, and a through hole adapted to the groove is provided on the hollow slider. An electromagnet main body is installed on the hollow slider. The electromagnet main body has a limiting rod. The bottom end of the limiting rod passes through the through hole, and the limiting rod is inserted into the groove after unlocking.

[0012] As a preferred technical solution of the present application, a baffle is fixedly connected to the limiting rod, and a third spring is further sleeved on the limiting rod between the baffle and the electromagnet main body.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In the solution of the present application: In this application, an L-shaped rack is provided. The L-shaped rack is composed of a rack body and a transmission plate, and there is an included angle A between the rack body and the transmission plate. By changing the angle between the rack body and the transmission plate, it is possible to change the stroke of the transmission plate while keeping the stroke of the rack body unchanged, that is, to change the driving stroke of the transmission plate on the locking part to adapt to various different stroke requirements. During this process, since the stroke of the rack body remains unchanged, the distance between the Hall elements does not need to be adjusted. Furthermore, this application is not restricted by the distance between the Hall elements when adapting to different stroke requirements; the design solution provided by this application realizes the adjustment of the ratio of the driving stroke to the stroke of the locking tongue part by simply changing the angle of the L-shaped rack, with a simple and reliable structure and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the motor lock provided by this application; Figure 2 is a schematic structural diagram of the motor lock provided by this application from another perspective; Figure 3 is a schematic structural diagram of the lock groove provided by this application; Figure 4 is a schematic structural diagram of the interior of the motor base provided by this application; Figure 5 provided by this application Figure 4 front view structural diagram; Figure 6 is a schematic structural diagram of the hollow slider provided by this application; Figure 7 is a schematic structural diagram of the magnet provided by this application; Figure 8 is a schematic structural diagram of the L-shaped rack provided by this application; Figure 9 is a schematic structural diagram of the hollow slider when an electromagnet main body is installed; Figure 10 is a schematic structural diagram of the groove and the through hole provided by this application; Figure 11 is a schematic structural diagram of the third spring provided by this application.

[0015] Labels in the figure: 1. Lock body; 101. Motor base; 102. Motor cover; 103. Driving motor; 104. Gear; 105. Rack body; 106. First limiting groove; 107. Hollow slider; 108. Retaining disc; 109. Lock pin; 110. First spring; 111. Second spring; 112. Second limiting groove; 113. Hall plate; 114. Hall element; 115. Control main board; 116. Transmission plate; 117. Inductive magnet; 118. Signal wire; 2. Lock disc; 201. Lock groove; 3. Mounting plate; 301. Through port; 4. Electromagnet body; 401. Limiting rod; 402. Baffle plate; 403. Third spring; 5. Groove; 6. Through hole. Detailed implementation manners

[0016] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0017] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0018] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0019] Example 1, please refer to Figures 1 - 8 , a motor lock, including a lock body 1 and a lock disc 2 used in cooperation with the lock body 1. A lock groove 201 is provided on the lock disc 2. The lock body 1 includes a driving member and an L-shaped rack connected to the driving member. The L-shaped rack is connected with a lock tongue part, and the lock tongue part moves under the drive of the driving member and the L-shaped rack to perform locking and unlocking actions. Mounting bolts are provided on the lock disc 2 for mounting the lock disc 2 into the hub motor; The L-shaped rack includes a rack body 105 connected to the driving member and a transmission plate 116 connected to the lock bolt portion. One end of the rack body 105 is connected to the transmission plate 116. An angle A is formed between the rack body 105 and the transmission plate 116. Changing the angle A changes the stroke ratio of the rack body 105 and the transmission plate 116, thereby changing the ratio of the L-shaped rack driving stroke to the lock bolt portion stroke. While the stroke of the rack body 105 remains unchanged, the stroke of the transmission plate 116 can be changed, that is, the driving stroke of the transmission plate 116 on the locking portion can be changed to adapt to a variety of different stroke requirements. The design scheme provided in the present application achieves a change in the ratio of the driving stroke to the lock bolt portion stroke by simply changing the L-shaped rack angle. The structure is simple, reliable, and easy to implement. Since the stroke of the rack body 105 remains unchanged, the spacing of the Hall element 14 does not need to be adjusted. When locking, the driving member drives the rack body 105 to move outward and the transmission plate 116 pushes the lock tongue to move, so that the lock tongue is plugged into the lock slot 201. When unlocking, the driving member drives the rack body 105 inward in the opposite direction to release the driving force on the transmission plate 116, so that the lock tongue is separated from the lock slot 201. It should be noted that the change in the angle between the rack body 105 and the transmission plate 116 recorded in this application is not a change made after the rack body 105 and the transmission plate 116 are produced, but rather the angle between the rack body 105 and the transmission plate 116 is confirmed according to actual conditions during the design phase, and then the positions of the second limit groove 112, the drive motor 103 and other structures are arranged according to the angle between the rack body 105 and the transmission plate 116.

[0020] Example 2 further optimizes the motor lock provided in Example 1. Specifically, Figures 1 - 8 As shown, the lock body 1 also includes a motor base 101 and a motor cover 102 connected to the motor base 101. The motor cover 102 and the motor base 101 are connected by bolts. A second limiting groove 112 is provided in the motor base 101. The rack body 105 is slidably connected to the inner wall of the second limiting groove 112. The second limiting groove 112 can limit the movement of the rack body 105. The driving component includes a driving motor 103 installed in the motor base 101. The output shaft of the driving motor 103 is connected to the gear 104, and the gear 104 is engaged with the rack body 105. When the driving motor 103 drives the gear 104 to rotate, the gear 104 can drive the rack body 105 to move along the second limiting groove 112; the motor base 101 and the motor cover 102 form a closed structure, which can effectively protect the internal components from external factors such as dust and moisture, thereby extending the service life of the lock.

[0021] Further, a Hall plate 113 parallel to the rack body 105 is installed in the motor base 101. Hall elements 114 are arranged on the Hall plate 113, and induction magnets 117 are arranged on the rack body 105. Moreover, the Hall elements 114 are on the moving track of the induction magnets 117. The induction magnets 117 move following the rack body 105. By the mutual cooperation of the induction magnets 117 and the Hall elements 114, the state of the rack body 105 can be detected, so as to determine whether the lock is in the locked state or the unlocked state.

[0022] Further, a first limiting groove 106 is arranged in the motor base 101. The lock tongue part includes a hollow slider 107 slidably connected in the first limiting groove 106, and the hollow slider 107 can move along the track of the first limiting groove 106; One side of the hollow slider 107 is slidably connected with the transmission plate 116. A retaining disc 108 is slidably connected in the hollow slider 107. A lock pin 109 is fixedly installed on the side of the retaining disc 108 away from the transmission plate 116. The side of the lock pin 109 away from the retaining disc 108 sequentially passes through the hollow slider 107 and the motor base 101. When locking, the driving motor 103 and the gear 104 cooperate to drive the rack body 105 to move outward. The rack body 105 drives the transmission plate 116 to move outward, and then the hollow slider 107 is pushed to move outward through the transmission plate 116.

[0023] Further, a first spring 110 located outside the hollow slider 107 is sleeved on the outer surface of the lock pin 109. Two ends of the first spring 110 are respectively abutted against the hollow slider 107 and the first limiting groove 106. A second spring 111 is arranged in the hollow slider 107. Two ends of the second spring 111 are respectively abutted against the retaining disc 108 and the hollow slider 107; When unlocking, the rack body 105 moves in the inner direction. At this time, the second spring 111 is confined within the hollow slider 107, and the second spring 111 pushes the hollow slider 107 to move in the inner direction. The hollow slider 107 drives the lock pin 109 to move through the retaining plate 108, so that the lock pin 109 is separated from the lock groove 201 to achieve unlocking. When locking, the rack body 105 moves in the outer direction. If the lock pin 109 is just aligned with the lock groove 201, the rack body 105 drives the lock pin 109 to extend through the transmission plate 116, the second spring 111, the retaining plate 108 and the first spring 110 to directly insert into the lock groove 201 to complete locking. If the lock pin 109 is not aligned with the lock groove 201 during the locking process, the lock pin 109 first abuts against the lock plate 2. At this time, the second spring 111 and the first spring 110 are compressed and deformed together. At this time, as long as the lock plate 2 rotates, the lock pin 109 will immediately be driven by the first spring 110 and the second spring 111 to insert into the lock groove 201 when aligned with the lock groove 201 to achieve locking. This design realizes the buffering when the lock pin 109 is not aligned with the lock groove 201 during the locking process.

[0024] Further, a control main board 115 is also installed inside the motor base 101. The control main board 115 is connected to the Hall board 113. The control main board 115 is connected with a signal line 118, and one end of the signal line 118 passes through the motor base 101 and extends to the outside of the motor base 101.

[0025] Further, the outer surface of the motor base 101 is connected with a mounting plate 3. A through hole 301 is provided on the mounting plate 3 for the hub motor main shaft to pass through. During the operation of the hub motor, the lock body 1 and the mounting plate 3 remain relatively stationary with respect to the main shaft, while the lock plate 2 rotates following the hub motor.

[0026] In practical applications, the hub motor usually integrates or cooperates with a speed measurement unit to achieve speed monitoring. Common speed measurement units include: Hall sensor: installed inside the hub motor, and the rotational speed is calculated by detecting the change of the rotor magnetic field and outputting a pulse signal; Encoder: directly installed on the rotor shaft of the hub motor, and the rotational speed is measured with high precision through the scale change of the code disc; In order to avoid locking during the operation of the hub motor, after the signal line 118 is connected to the control system of the hub motor, the control system of the hub motor can control the drive motor 103 through the signal line 118 and the control main board 115. The locking action can only be started when the detected hub rotational speed is lower than a certain value, preventing potential safety hazards caused by sudden locking during high-speed rotation. Here, the range of the hub rotational speed value can be between 0 - 60 revolutions per minute, and this range ensures that the hub motor is in a low-speed or about-to-stop state.

[0027] Embodiment 3 further optimizes the motor lock provided in Embodiment 1 or 2. Specifically, as Figures 9 - 11 shown, a groove 5 is formed on the retaining disc 108, and a through hole 6 adapted to the groove 5 is formed on the hollow slider 107. An electromagnet main body 4 is installed on the hollow slider 107. The electromagnet main body 4 has a limiting rod 401. The bottom end of the limiting rod 401 passes through the through hole 6, and the limiting rod 401 is inserted into the groove 5 after unlocking. The insertion of the limiting rod 401 into the groove 5 after unlocking realizes the limitation of the retaining disc 108 and the locking pin 109, so as to prevent the locking pin 109 from protruding during the operation of the hub motor.

[0028] Furthermore, a baffle 402 is fixedly connected to the limiting rod 401, and a third spring 403 located between the baffle 402 and the electromagnet main body 4 is sleeved on the limiting rod 401. After the electromagnet main body 4 is energized, it can overcome the elastic force of the third spring 403 to drive the limiting rod 401 to separate from the groove 5. After the electromagnet main body 4 is powered off, the acting force of the third spring 403 can push the limiting rod 401 to be inserted into the groove 5 through the baffle 402. That is, before unlocking, the electromagnet main body 4 is energized to adsorb the limiting rod 401, so that the limiting rod 401 is separated from the groove 5. After unlocking, the electromagnet main body 4 is powered off, and the limiting rod 401 is inserted into the groove 5; the electromagnet main body 4 is powered by the control main board 115.

[0029] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields is similarly within the scope of the patent protection of the present invention.

Claims

1. A motor lock, characterized in that, It includes a lock body (1) and a lock disc (2) used in cooperation with the lock body (1). A lock groove (201) is provided on the lock disc (2). The lock body (1) includes a driving member and an L-shaped rack connected to the driving member. The L-shaped rack is connected with a lock tongue part, and the lock tongue part moves under the drive of the driving member and the L-shaped rack to perform locking and unlocking actions; The L-shaped rack includes a rack body (105) connected to the driving member and a transmission plate (116) connected to the lock tongue part. One end of the rack body (105) is connected to the transmission plate (116). An angle A is formed between the rack body (105) and the transmission plate (116). By changing the angle of the angle A, the stroke ratio between the rack body (105) and the transmission plate (116) is changed, so as to realize the change of the stroke ratio between the driving stroke of the L-shaped rack and the stroke of the lock tongue part; When locking, the driving member drives the rack body (105) to move outwards and the transmission plate (116) pushes the lock tongue part to move, so as to realize the insertion of the lock tongue part into the lock groove (201); when unlocking, the driving member drives the rack body (105) to move inwards in the reverse direction to release the pushing force on the transmission plate (116), and the lock tongue part is separated from the lock groove (201).

2. The motor lock according to claim 1, wherein The lock body (1) further includes a motor base (101) and a motor cover (102) connected to the motor base (101). A second limiting groove (112) is provided in the motor base (101). The rack body (105) is slidably connected to the inner wall of the second limiting groove (112). The driving member includes a driving motor (103) installed in the motor base (101). The output shaft of the driving motor (103) is connected with a gear (104), and the gear (104) meshes with the rack body (105).

3. The motor lock according to claim 2, characterized in that, A Hall plate (113) parallel to the rack body (105) is installed in the motor base (101). Hall elements (114) are provided on the Hall plate (113). An induction magnet (117) is provided on the rack body (105), and the Hall elements (114) are on the moving track of the induction magnet (117).

4. The motor lock according to claim 2 or 3, characterized in that A first limiting groove (106) is provided in the motor base (101). The lock tongue part includes a hollow slider (107) slidably connected in the first limiting groove (106). One side of the hollow slider (107) is slidably connected to the transmission plate (116). A retaining disc (108) is slidably connected in the hollow slider (107). A lock pin (109) is fixedly installed on the side of the retaining disc (108) away from the transmission plate (116). The side of the lock pin (109) away from the retaining disc (108) sequentially passes through the hollow slider (107) and the motor base (101).

5. The motor lock according to claim 4, characterized in that A first spring (110) is sleeved on the outer surface of the locking pin (109) and is located outside the hollow slider (107). The two ends of the first spring (110) are respectively in contact with the hollow slider (107) and the first limiting groove (106). A second spring (111) is arranged inside the hollow slider (107), and the two ends of the second spring (111) are respectively in contact with the retaining disc (108) and the hollow slider (107).

6. The motor lock according to claim 5, characterized in that The second spring (111) is used to provide a thrust force for the locking pin (109) to extend outwards, and the first spring (110) is used to provide a thrust force for the locking pin (109) to retract inwards.

7. The motor lock according to claim 3, characterized in that, A control main board (115) is further installed inside the motor base (101). The control main board (115) is connected to the Hall board (113). The control main board (115) is connected with a signal wire (118), and one end of the signal wire (118) passes through the motor base (101) and extends to the outside of the motor base (101).

8. The motor lock according to claim 2, wherein, An installation plate (3) is connected to the outer surface of the motor base (101), and a through hole (301) is arranged on the installation plate (3).

9. The motor lock according to claim 4, wherein A groove (5) is formed in the retaining disc (108), and a through hole (6) adapted to the groove (5) is formed in the hollow slider (107). An electromagnet main body (4) is installed on the hollow slider (107). The electromagnet main body (4) has a limiting rod (401). The bottom end of the limiting rod (401) passes through the through hole (6), and the limiting rod (401) is inserted into the groove (5) after unlocking.

10. The motor lock according to claim 9, characterized in that, A baffle (402) is fixedly connected to the limiting rod (401), and a third spring (403) is further sleeved on the limiting rod (401) and is located between the baffle (402) and the electromagnet main body (4).

Images