Built-in vehicle locking mechanism, speed change device and hub motor

Abstract

The invention discloses a built-in vehicle locking mechanism, a speed change device and a hub motor, and relates to the field of built-in vehicle locks. According to the technical scheme, the lock is characterized by comprising a fixing support and a lock ring, a rotatable lock tongue is arranged on the fixing support, and a plurality of lock grooves distributed in the circumferential direction are formed in the lock ring; a retaining column is arranged on the fixing support, and a retaining face matched with the retaining column is arranged on the spring bolt. The lock tongue is embedded in any lock groove, the retaining column moves to make contact with the retaining face, and the bicycle locking state is formed. According to the invention, the retaining column is matched with the retaining surface, so that on one hand, the stability of a locking state can be improved, and on the other hand, the severity of consequences caused by accidental locking can be reduced, thereby improving the safety.

Description

Technical Field

[0001] The present invention relates to the field of built-in vehicle locks, and more particularly to a built-in vehicle locking mechanism, a speed change device and a wheel hub motor. Background Art

[0002] In order to improve the safety of the vehicle, in addition to the external lock, a built-in lock will be installed in the vehicle's speed hub or wheel hub motor to improve the safety of the vehicle.

[0003] A built-in car lock usually includes a lock tongue and a lock ring. The lock tongue is embedded in the lock ring to lock the car.

[0004] However, when a mechanical failure occurs in the vehicle lock, how to reduce the severity of the consequences of accidentally locking the vehicle is an urgent problem to be solved. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, one of the purposes of the present invention is to provide a built-in vehicle locking mechanism, which adopts a stop column and a stop surface to improve the stability of the locked state on the one hand, and reduce the severity of the consequences caused by accidental locking of the vehicle on the other hand, thereby improving safety.

[0006] To achieve the above object, the present invention provides the following technical solutions: A built-in car locking mechanism includes a fixed bracket and a locking ring, wherein the fixed bracket is provided with a rotatable locking tongue, and the locking ring is provided with a plurality of locking grooves arranged along the circumference; The fixing bracket is provided with a stop column, and the lock tongue is provided with a stop surface that cooperates with the stop column; The lock tongue is embedded in any lock groove, and the anti-retraction column moves to contact the anti-retraction surface to form a locked vehicle state.

[0007] Furthermore, the built-in car locking mechanism also includes an unlocking plate; during the movement, the unlocking plate first drives the stop column to disengage from the stop surface, and then drives the lock tongue to rotate to disengage from the lock slot to achieve unlocking.

[0008] Furthermore, the unlocking plate is provided with a first driving inclined surface and a stop surface connected to the first driving inclined surface; during the movement of the unlocking plate, the first driving inclined surface drives the stop column to move to a retracted state until the stop surface contacts the stop column, so that the stop column remains in the retracted state.

[0009] Furthermore, an unlocking pin is provided on the unlocking plate, and a movable hole cooperating with the unlocking pin is provided on the lock tongue; the inner wall of the movable hole includes an unlocking driving surface cooperating with the unlocking pin; When the unlocking plate moves, the unlocking pin moves in the movable hole. When the stop column separates from the stop surface, the unlocking pin moves to contact the unlocking drive surface and moves relative to the unlocking drive surface, thereby driving the lock tongue to rotate and disengage from the lock slot.

[0010] Furthermore, a linear guide structure is provided between the unlocking plate and the fixing bracket.

[0011] Furthermore, a torsion spring is provided between the lock tongue and the fixing bracket, and the elastic force of the torsion spring causes the lock tongue to rotate and be embedded in the lock slot; The fixing bracket is provided with a guide groove cooperating with the anti-retraction column, and a compression spring in contact with the anti-retraction column is provided in the guide groove; the elastic force of the compression spring makes the anti-retraction column have a tendency to move to contact with the anti-retraction surface.

[0012] Furthermore, when the anti-retraction column is separated from the anti-retraction surface, the force exerted by the contact between the lock ring and the lock tongue can cause the lock tongue to rotate inward, and the vehicle cannot be locked.

[0013] Furthermore, the lock tongue and / or the inner wall of the lock slot are provided with a second driving inclined surface.

[0014] Furthermore, the lock tongue is provided with a second driving inclined surface and a locking surface connected with the second driving inclined surface; When the vehicle is locked, the anti-retraction column contacts the anti-retraction surface, and the locking surface contacts the inner wall of the locking groove.

[0015] Furthermore, the built-in vehicle locking mechanism further includes an unlocking drive assembly, and a tension spring is provided between the unlocking drive assembly and the unlocking plate.

[0016] Furthermore, the unlocking drive assembly includes a drive motor, a worm gear assembly connected to the drive motor, a rack and pinion assembly connected to the worm gear assembly, and a linear slide connected to the rack and pinion assembly; the linear slide is connected to a tension spring.

[0017] Furthermore, the built-in vehicle locking mechanism also includes a speed sensor; when the speed sensor detects that the locking ring or the output member connected to the locking ring has a rotation speed, the unlocking drive component will not perform the unlocking action.

[0018] Another object of the present invention is to provide a transmission comprising the above-mentioned built-in vehicle locking mechanism.

[0019] Furthermore, the speed change device also includes a speed change mechanism and a shift actuator; the worm gear assembly of the built-in vehicle locking mechanism includes two output ends, one output end is connected to the gear rack assembly, and the other output end acts on the shift actuator.

[0020] Another object of the present invention is to provide a hub motor comprising the above-mentioned built-in locking mechanism.

[0021] In summary, the present invention has the following beneficial effects: 1. When the bike is locked, the backstop post contacts the backstop surface, which can improve the stability of the locked state. When the lock mechanism fails and the lock tongue rotates outward, the lock ring continuously hits the lock tongue. When the lock ring rotates at high speed, the lock tongue is hit more frequently and cannot be fully embedded in the lock groove. At this time, the angle of the lock tongue prevents the backstop post from contacting the backstop surface, and the bike cannot be locked, which will not cause the rider to fall due to the sudden locking of the bike. When the lock ring rotates at a very low speed, the lock tongue will be embedded in the lock groove, and the backstop post can also extend to contact the backstop surface, forming a locked state. However, when locking the bike at a very low speed, the rider can still effectively control the bike and will not fall, thereby effectively reducing the consequences of a malfunction of the lock mechanism. 2. During the unlocking process, the unlocking plate needs to first release the locking pin from the lock tongue before it can drive the lock tongue out of the lock slot to achieve unlocking; therefore, the double unlocking design of the unlocking plate can simplify the structure and reduce the number of parts; 3. When the speed sensor detects that the lock ring or the output component connected to the lock ring has a rotation speed, the unlocking drive component will not perform the unlocking action even if it receives the unlocking command, which can improve safety; 4. The drive motor and worm gear assembly of the built-in locking mechanism also serve as the shift drive mechanism of the speed change device, which can simplify the structure of the speed change device, reduce the number of parts and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 3 ; Figure 4 Schematic diagram of the unlocking drive assembly and unlocking plate in Example 1 Figure 1 ; Figure 5 Schematic diagram of the unlocking drive assembly and unlocking plate in Example 1 Figure 2 ; Figure 6 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 4 ; Figure 7 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 5 ; Figure 8 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 6 ; Figure 9 This is a schematic diagram of the structure of the built-in locking mechanism in Example 1. Figure 7 ; Figure 10 Schematic diagram of the structure of the lock ring and the lock tongue in Example 1; Figure 11 The structure of the speed change device in Example 2 is shown as follows Figure 1 ; Figure 12 The structure of the speed change device in Example 2 is shown as follows Figure 2 .

[0023] In the figure: 1. Fixed bracket; 2. Locking ring; 21. Locking groove; 3. Locking tongue; 31. Retraction surface; 32. Movable hole; 33. Unlocking driving surface; 34. Second driving inclined surface; 35. Locking surface; 4. Retraction column; 5. Unlocking plate; 51. First driving inclined surface; 52. Stop surface; 53. Unlocking pin; 61. Driving motor; 62. Worm gear assembly; 63. Rack and pinion assembly; 64. Slide; 71. Circuit board; 72. Speed ​​sensor; 81. Speed ​​changing mechanism; 82. Shift actuator. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law. Example 1:

[0026] A built-in locking mechanism, referring to Figures 1 to 10 It includes a fixed bracket 1 and a locking ring 2. The fixed bracket 1 is provided with a rotatable lock tongue 3, and the locking ring 2 is provided with a plurality of lock grooves 21 arranged along the circumferential direction; wherein the rotation axis of the lock tongue 3 is not coaxial with the center line of the locking ring 2; the lock tongue 3 can be rotated to be embedded in any lock groove 21; in this embodiment, a torsion spring is provided between the lock tongue 3 and the fixed bracket 1, and the elastic force of the torsion spring makes the lock tongue 3 have a tendency to rotate to be embedded in the lock groove 21.

[0027] Reference Figures 1 to 10The fixed bracket 1 is provided with a guide groove, in which a stop column 4 capable of moving in a straight line direction and a compression spring acting on the stop column 4 are provided; the stop column 4 includes an extended state and a retracted state relative to the guide groove, and the elastic force of the compression spring makes the stop column 4 tend to move to the extended state; a stop surface 31 cooperating with the stop column 4 is provided on the lock tongue 3, and the stop column 4 can contact the stop surface 31 when in the extended state.

[0028] Reference Figures 1 to 10 When the lock tongue 3 is embedded in any lock groove 21 and the stop column 4 moves to contact the stop surface 31, a locked car state is formed; the lock tongue 3 can be embedded in the lock groove 21 by rotating outward, and the stop column 4 contacts the stop surface 31, which can prevent the lock tongue 3 from rotating inward and cannot be separated from the lock groove 21.

[0029] Reference Figures 1 to 10 In this embodiment, two conditions must be met at the same time to form a locked state. The first is that the lock tongue 3 is embedded in the lock groove 21, and the second is that the stop post 4 is in contact with the stop surface 31; when the stop post 4 is separated from the stop surface 31, the force exerted by the lock ring 2 when it contacts the lock tongue 3 can cause the lock tongue 3 to rotate inward, and the locked state cannot be formed.

[0030] Reference Figures 1 to 10 When the vehicle is locked, the locking post 4 contacts the locking surface 31, which can improve the stability of the locked state; when the locking mechanism fails and causes the lock tongue 3 to rotate outward, the lock ring 2 continuously hits the lock tongue 3; wherein, when the lock ring 2 rotates at a high speed, the lock tongue 3 is hit at a relatively high frequency and cannot be completely embedded in the lock groove 21. At this time, the angle of the lock tongue 3 makes it impossible for the locking post 4 to contact the locking surface 31, and the locked state cannot be formed, which will not cause the rider to fall due to the sudden locking of the vehicle; when the rotation speed of the lock ring 2 is very low, the lock tongue 3 will be embedded in the lock groove 21, and the locking post 4 can also extend to contact the locking surface 31, forming the locked state; however, when locking the vehicle at a very low rotation speed, the rider can still effectively control the vehicle and will not fall, thereby effectively reducing the consequences caused by the failure of the locking mechanism.

[0031] Reference Figures 1 to 10 In this embodiment, the lock tongue 3 includes a hinged end close to the rotation axis and a free end away from the rotation axis; wherein the outer side of the free end cooperates with the lock groove 21, and the inner side of the free end is provided with a stop surface 31.

[0032] Reference Figures 1 to 10In this embodiment, the built-in car locking mechanism also includes an unlocking plate 5 and an unlocking drive assembly for driving the unlocking plate 5 to move in a linear direction; wherein, a linear guide structure is provided between the unlocking plate 5 and the fixed bracket 1, thereby improving the stability of the movement of the unlocking plate 5; in this embodiment, the unlocking drive assembly includes a drive motor 61, a worm gear assembly 62 connected to the drive motor 61, a gear rack assembly 63 connected to the worm gear assembly 62, and a linear slide 64 connected to the gear rack assembly 63; a tension spring is provided between the linear slide 64 and the unlocking plate 5.

[0033] Reference Figures 1 to 10 The self-locking property of the worm gear assembly 62 can improve the stability of the locked vehicle state; the gear rack assembly 63 is used to convert the rotational motion of the drive motor 61 into linear motion; the slide 64 is used to improve the stability of the linear motion; in this embodiment, the rack of the gear rack assembly 63 and the slider of the slide 64 are integrally formed, thereby reducing the number of parts and assembly processes; the force of the unlocking drive assembly is transmitted to the unlocking plate 5 through the tension spring, and the buffering of the tension spring can prevent parts from being damaged.

[0034] Reference Figures 1 to 10 In this embodiment, the unlocking plate 5 is provided with a first driving inclined surface 51 and a stop surface 52 connected to the first driving inclined surface 51; when the unlocking plate 5 moves, the first driving inclined surface 51 drives the stop column 4 to move to the retracted state until the stop surface 52 contacts the stop column 4, so that the stop column 4 remains in the retracted state; specifically, in this embodiment, the first driving inclined surface 51 and the stop surface 52 are formed on the side wall of the unlocking plate 5.

[0035] Reference Figures 1 to 10 The unlocking pin 53 is provided on the end surface of the unlocking plate 5, and the lock tongue 3 is provided with a movable hole 32 that cooperates with the unlocking pin 53; the inner wall of the movable hole 32 includes an unlocking driving surface 33 that cooperates with the unlocking pin 53; wherein, when the unlocking plate 5 moves, the unlocking pin 53 moves in the movable hole 32, and when the retaining column 4 is separated from the retaining surface 31, the unlocking pin 53 moves to contact the unlocking driving surface 33; the unlocking pin 53 continues to move along the linear direction with the unlocking plate 5, and moves along the unlocking driving surface 33 relative to the lock tongue 3, thereby driving the lock tongue 3 to rotate and disengage from the lock slot 21, thereby achieving unlocking.

[0036] Reference Figures 1 to 10During the unlocking process, the unlocking plate 5 needs to first release the locking of the lock tongue 3 by the retaining column 4, and then it can drive the lock tongue 3 to disengage from the lock groove 21 to achieve unlocking; therefore, the double unlocking design of the unlocking plate 5 can simplify the structure and reduce the number of parts; in the unlocked state, the unlocking pin 53 maintains contact with the unlocking drive surface 33, and the lock tongue 3 contacts the slide 64. The double limit makes the lock tongue 3 fixed relative to the fixing bracket 1, thereby avoiding the lock tongue 3 hitting and causing noise, and optimizing the user experience.

[0037] Reference Figures 1 to 10 When the locking mechanism is in a locked state, the rider can control the vehicle effectively, so that the vehicle will not fall down if the locking mechanism fails to lock.

[0038] Reference Figures 1 to 10 Preferably, the inner wall of the lock tongue 3 and / or the lock groove 21 is provided with a second driving inclined surface, which is conducive to the continuous impact of the lock ring 2 on the lock tongue 3; specifically, in this embodiment, the lock tongue 3 is provided with a second driving inclined surface 34 and a locking surface 35 connected with the second driving inclined surface 34; when the car is locked, the retaining column 4 contacts the retaining surface 31, and the locking surface 35 contacts the inner wall of the lock groove 21, thereby improving the stability of the locked state.

[0039] Reference Figures 1 to 10 In this embodiment, the built-in locking mechanism also includes a circuit board 71 and a speed sensor 72 connected to the circuit board 71; when the speed sensor 72 detects that the lock ring 2 or the output component connected to the lock ring 2 has a rotational speed, even if an unlocking command is received, the unlocking drive component will not perform the unlocking action, which can improve safety. Example 2:

[0040] A speed change device, referring to Figures 1 to 12The speed change device in this embodiment includes the built-in car locking mechanism in Example 1, and also includes a speed change mechanism 81 and a shift actuator 82; wherein, the worm gear assembly 62 includes two output ends, one output end is connected to the gear rack assembly 63, and the other output end acts on the shift actuator 82; that is, the drive motor 61 and the worm gear assembly 62 of the built-in car locking mechanism in this embodiment also serve as the shift drive mechanism of the speed change device, which can simplify the structure of the speed change device, reduce the number of parts, and reduce costs; wherein, the driving stroke of the drive motor 61 when performing the shift action is redundant for the built-in car locking mechanism, and the slide 64 and the tension spring can perform the redundant driving stroke. Example 3:

[0041] A hub motor, referring to Figures 1 to 10 , which includes the built-in car locking mechanism in Example 1.

Claims

1. A built-in locking mechanism, characterized by: It includes a fixed bracket and a locking ring, wherein the fixed bracket is provided with a rotatable locking tongue, and the locking ring is provided with a plurality of locking grooves arranged along the circumferential direction; The fixing bracket is provided with a stop column, and the lock tongue is provided with a stop surface that cooperates with the stop column; The lock tongue is embedded in any lock groove, and the anti-retraction column moves to contact the anti-retraction surface to form a locked vehicle state.

2. The built-in locking mechanism according to claim 1, characterized in that: The built-in car locking mechanism also includes an unlocking plate; during the movement, the unlocking plate first drives the anti-retraction column to disengage from the anti-retraction surface, and then drives the lock tongue to rotate to disengage from the lock groove to achieve unlocking.

3. The built-in locking mechanism according to claim 2, characterized in that: The unlocking plate is provided with a first driving inclined surface and a stop surface connected to the first driving inclined surface; when the unlocking plate moves, the first driving inclined surface drives the stop column to move to a retracted state until the stop surface contacts the stop column, so that the stop column remains in the retracted state.

4. The built-in locking mechanism according to claim 3, characterized in that: The unlocking plate is provided with an unlocking pin, and the lock tongue is provided with a movable hole that cooperates with the unlocking pin; the inner wall of the movable hole includes an unlocking driving surface that cooperates with the unlocking pin; When the unlocking plate moves, the unlocking pin moves in the movable hole. When the stop column separates from the stop surface, the unlocking pin moves to contact the unlocking drive surface and moves relative to the unlocking drive surface, thereby driving the lock tongue to rotate and disengage from the lock slot.

5. The built-in locking mechanism according to claim 2, characterized in that: A linear guide structure is provided between the unlocking plate and the fixing bracket.

6. The built-in locking mechanism according to claim 1, characterized in that: A torsion spring is provided between the lock tongue and the fixing bracket, and the elastic force of the torsion spring causes the lock tongue to rotate and be embedded in the lock slot; The fixing bracket is provided with a guide groove cooperating with the anti-retraction column, and a compression spring in contact with the anti-retraction column is provided in the guide groove; the elastic force of the compression spring makes the anti-retraction column have a tendency to move to contact with the anti-retraction surface.

7. The built-in locking mechanism according to claim 1, characterized in that: When the anti-retraction column is separated from the anti-retraction surface, the force exerted by the contact between the lock ring and the lock tongue can cause the lock tongue to rotate inward, and the vehicle cannot be locked.

8. The built-in locking mechanism according to claim 7, characterized in that: The inner wall of the lock tongue and / or the lock slot is provided with a second driving inclined surface.

9. The built-in locking mechanism according to claim 8, characterized in that: The lock tongue is provided with a second driving inclined surface and a locking surface connected with the second driving inclined surface; When the vehicle is locked, the anti-retraction column contacts the anti-retraction surface, and the locking surface contacts the inner wall of the locking groove.

10. The built-in locking mechanism according to claim 2, characterized in that: The built-in vehicle locking mechanism further includes an unlocking drive assembly, and a tension spring is provided between the unlocking drive assembly and the unlocking plate.

11. The built-in vehicle locking mechanism according to claim 10, characterized in that: The unlocking drive assembly includes a drive motor, a worm gear assembly connected to the drive motor, a rack and pinion assembly connected to the worm gear assembly, and a linear slide connected to the rack and pinion assembly; the linear slide is connected to a tension spring.

12. The built-in vehicle locking mechanism according to claim 10, characterized in that: The built-in vehicle locking mechanism further includes a speed sensor; when the speed sensor detects that the locking ring or the output member connected to the locking ring has a rotational speed, the unlocking drive assembly will not perform the unlocking action.

13. A speed change device, characterized in that: The vehicle comprises a built-in locking mechanism according to any one of claims 1 to 12.

14. The speed change device according to claim 13, characterized in that: The speed change device also includes a speed change mechanism and a shift actuator; the worm gear assembly of the built-in vehicle locking mechanism includes two output ends, one output end is connected to the gear rack assembly, and the other output end acts on the shift actuator.

15. A hub motor, characterized in that: The vehicle comprises a built-in locking mechanism according to any one of claims 1 to 12.

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