Transmission device and parking space lock

Abstract

The utility model provides a transmission device and a parking space lock, and relates to the technical field of parking space locksets, and the transmission device comprises a protection device. The protection device comprises a shaft sleeve in transmission connection with the output shaft of the driving device and a slipping shaft in friction transmission connection with the shaft sleeve, the end, extending out of the shaft sleeve, of the slipping shaft is in transmission connection with the swing arm, and the slipping shaft can idle relative to the shaft sleeve when preset friction force is exceeded. Thus, when the swing arm of the parking lock is impacted by a large external force, the force transmitted by the swing arm enables the slip shaft to overcome the friction force of the shaft sleeve and to idle relative to the shaft sleeve, so that the overlarge external force cannot be directly transmitted to the driving device, and the driving device cannot be damaged; the parking lock with the transmission device has the advantage that the driving device can be protected when the swing arm is collided.

Description

Technical Field

[0001] The utility model relates to the technical field of parking locks, in particular to a parking lock. Background Art

[0002] Parking locks are commonly used for personal or parking management to prevent spaces from being occupied. When a permitted vehicle approaches the space, the lock's arm lowers, allowing entry; when the vehicle leaves the space, the arm raises, preventing other vehicles from entering.

[0003] Existing electronic parking locks typically consist of a base plate and a drive mechanism mounted within the base. The drive mechanism's output shaft is connected to a swing arm via a transmission mechanism, driving the arm's vertical movement. When the swing arm is struck by a significant external force, the force is directly transmitted to the drive mechanism via the transmission mechanism, potentially overloading and damaging the drive motor or causing gears in the drive mechanism's reduction gearbox to snap and break.

[0004] Therefore, a transmission device and a parking lock that can protect the drive device when the swing arm is hit need to be designed. Utility Model Content

[0005] The purpose of the present invention is to provide a transmission device and a parking lock to address the defects and shortcomings of the existing technology, so as to solve at least one of the above technical problems, and the utility model has the advantage of protecting the driving device when the swing arm is hit.

[0006] To achieve the above objectives, the present invention provides a transmission device for a parking lock, comprising:

[0007] protective devices;

[0008] The protection device includes a sleeve that is transmission-connected to the output shaft of the driving device, a slip shaft that is friction-transmission-connected to the sleeve, one end of the slip shaft extending out of the sleeve is transmission-connected to the swing arm, and the slip shaft can idle relative to the sleeve when the friction force exceeds a preset value.

[0009] Optionally, the sleeve includes a connecting section, a clamping section and a clamping spring; the connecting section is in transmission connection with the output shaft of the driving device; the clamping section is cylindrical, and the cylindrical wall of the clamping section is circumferentially spaced with gaps extending in the axial direction; the clamping spring is arranged on the outer periphery of the clamping section.

[0010] Optionally, an axle seat is further provided between the swing arm and the protection device, and the axle seat is rotatably connected to the slip shaft via a first bearing.

[0011] Optionally, one end of the slipping shaft extending out of the shaft sleeve is in transmission connection with the swing arm through a crank-rocker mechanism; the crank-rocker mechanism includes a crank, a connecting rod and a rocker. One end of the crank is in transmission connection with the slipping shaft, the other end of the crank is hinged to the connecting rod, one end of the rocker is hinged to the end of the connecting rod away from the crank, and the other end of the rocker is in transmission connection with the swing arm. The device further includes a first sensing member disposed at the first extreme position of the swing of the rocker, a second sensing member disposed at the second extreme position of the swing of the rocker, and a control device that is electrically connected to the driving device, the first sensing member and the second sensing member and is used to control the operation of the driving device.

[0012] Optionally, the first sensing member and the second sensing member are microswitches, infrared sensors, ultrasonic sensors, or magnetic sensors.

[0013] Optionally, the transmission device further includes a waterproof protection box; the control device, the driving device, the protection device, the crank-rocker mechanism, the first sensing member and the second sensing member are all assembled in the waterproof protection box.

[0014] Optionally, the transmission device further includes a first transmission shaft; two second bearings are arranged inside one side side wall of the waterproof protection box; one end of the first transmission shaft is fixedly configured with the swing arm, the other end is fixedly configured with the rocker, and is fixedly configured with the inner rings of the two second bearings.

[0015] Another aspect of the present utility model provides a parking lock, including:

[0016] A bottom plate;

[0017] A driving device;

[0018] A swing arm;

[0019] And the transmission device as described above;

[0020] The driving device, the transmission device and the swing arm are assembled and fixed on the bottom plate.

[0021] Optionally, the driving device includes a driving motor and a speed reducer in transmission connection with the driving motor.

[0022] Optionally, the parking lock further includes a power supply disposed on the bottom plate and electrically connected to the driving device and the control device, and a protection housing assembled and connected to the bottom plate and enclosing an assembly cavity with the bottom plate.

[0023] Compared with the prior art, the advantages of this application are:

[0024] Since the output shaft of the driving device of the parking lock is in transmission connection with the shaft sleeve, the shaft sleeve is in frictional transmission connection with the slipping shaft, one end of the slipping shaft extending out of the shaft sleeve is in transmission connection with the swing arm, and the slipping shaft can rotate idly relative to the shaft sleeve when the preset friction force is exceeded. In this way, when the swing arm of the parking lock is impacted by a large external force, the force transmitted by the swing arm will cause the slipping shaft to overcome the friction force of the shaft sleeve and rotate idly relative to the shaft sleeve, so that the excessive external force cannot be directly transmitted to the driving device, and thus the driving device will not be damaged, making the parking lock with this transmission device have the advantage of protecting the driving device when the swing arm is collided. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0026] Figure 1 Partial structural exploded view of the parking lock according to the embodiment of the present invention;

[0027] Figure 2 Partial structural view of the parking lock according to the embodiment of the present invention, where the swing arm is in the unlocked state of being lowered;

[0028] Figure 3 Partial structural view of the parking lock according to the embodiment of the present invention, where the swing arm is in the locked state of being erected;

[0029] Figure 4 Structural view of the driving device, protection device and crank-rocker mechanism corresponding to the swing arm in the unlocked state of being lowered according to the embodiment of the present invention;

[0030] Figure 5 For Figure 4 Cross-sectional view along line A-A in

[0031] Figure 6 Structural view of the driving device, protection device and crank-rocker mechanism corresponding to the swing arm in the locked state of being erected according to the embodiment of the present invention;

[0032] Figure 7 For Figure 6 Cross-sectional view along line B-B in

[0033] Figure 8 Bottom view of the driving device, protection device and crank-rocker mechanism according to the embodiment of the present invention;

[0034] Figure 9 For Figure 8Cross-sectional view along CC line;

[0035] Figure 10 for Figure 8 Cross-sectional view along line DD;

[0036] Figure 11 This is a schematic diagram of a partially exploded structure of the driving device, protective device and crank rocker mechanism from one perspective of an embodiment of the utility model;

[0037] Figure 12 This is a schematic diagram of the partially exploded structure of the driving device, protective device and crank rocker mechanism from another perspective of an embodiment of the utility model.

[0038] Description of Reference Numerals

[0039] 1000-parking lock;

[0040] 100-base plate; 110-rotating bracket; 120-screw; 130-first transmission shaft; 140-second transmission shaft;

[0041] 200 - driving device; 210 - driving motor; 220 - reduction gearbox; 221 - output shaft; 221a - flat shaft portion;

[0042] 300-protection device; 310-shaft sleeve; b-shaft hole; 311-connecting section; c-flat shaft groove; 312-clamping section; d-gap; 313-clamping spring; 320-slip shaft;

[0043] 400-crank rocker mechanism; 410-crank; 420-connecting rod; 430-rocker;

[0044] 500-swing arm; 510-swing rod;

[0045] 610-sliding bearing seat; 620-sliding bearing;

[0046] 710-first sensing element; 720-second sensing element;

[0047] 800-Waterproof protection box; 810-Waterproof box shell; 820-Waterproof box top cover; 830-Fastener; 840-Deep groove ball bearing; 850-Sealing ring;

[0048] 900-power supply;

[0049] 150-Protective housing. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0051] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential", etc. of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms such as "first" and "second" are only used to distinguish multiple components or structures with the same or similar structures, and do not represent a special limitation on the setting order or connection relationship.

[0052] Please refer to Figures 1 to 12 , an embodiment of the present utility model provides a transmission device, which is applied to a parking lock 1000. The transmission device includes: a protection device 300. The protection device 300 includes a bushing 310 and a slipping shaft 320. The bushing 310 is in transmission connection with the output shaft 221 of the driving device 200; the slipping shaft 320 is in frictional transmission connection with the bushing 310; specifically, the slipping shaft 320 is in frictional transmission connection with the inner wall of the shaft hole b of the bushing 310; one end of the slipping shaft 320 extending out of the bushing 310 is in transmission connection with the swing arm 500, and the slipping shaft 320 can idle relative to the bushing 310 when the preset frictional force is exceeded.

[0053] In this way, during normal operation, the output shaft 221 of the driving device 200 of the parking lock 1000 transmits torque to the bushing 310, the bushing 310 transmits torque to the slipping shaft 320 through frictional transmission, and the slipping shaft 320 transmits torque to the swing arm 500, thereby realizing the rotation of the swing arm 500, so that the swing arm 500 can be in the erected locking state or the lowered unlocking state. When the swing arm 500 is impacted by a large external force, the force transmitted by the swing arm 500 will cause the slipping shaft 320 to overcome the frictional force of the bushing 310 and idle relative to the bushing 310, so that the excessive external force cannot be directly transmitted to the driving device 200, and thus the driving device 200 will not be damaged. The parking lock 1000 with this transmission device has the advantage of protecting the driving device 200 when the swing arm 500 is collided.

[0054] Optionally, please refer to Figures 10 to 12, in this embodiment, the bushing 310 includes a connecting section 311, a clamping section 312, and a clamping spring 313. The connecting section 311 is in transmission connection with the output shaft 221 of the driving device 200. Specifically, the output shaft 221 has a flat shaft portion 221a, and the connecting section 311 has a flat shaft groove c that matches the flat portion. The transmission connection between the connecting section 311 and the output shaft 221 of the driving device 200 is achieved through the fixed matching of the flat shaft portion 221a and the flat shaft groove c. It can be understood that the output shaft 221 can also be a key shaft, and the transmission connection between the connecting section 311 and the output shaft 221 of the driving device 200 is achieved by providing a corresponding key groove in the connecting section 311, which is not specifically limited here. The clamping section 312 is cylindrical, and gaps d extending axially are circumferentially spaced on the cylindrical wall of the clamping section 312. Specifically, the clamping section 312 is cylindrical, with a transverse shaft hole b inside the cylinder, and gaps d extending axially are evenly and circumferentially spaced on the cylindrical wall of the clamping section 312. The clamping spring 313 is sleeved on the outer periphery of the clamping section 312. By adjusting the clamping force of the clamping spring 313 on the outer periphery of the clamping section 312, the preset frictional force of the sleeve on the slipping shaft 320 is set. That is, within the range of this preset frictional force, the driving device 200 can normally transmit torque to the slipping shaft 320.

[0055] To make the torque transmitted from the slipping shaft 320 to the swing arm 500 more stable, that is, to make the rotation of the slipping shaft 320 smoother. Optionally, please refer to Figure 8 and Figure 11 , in this embodiment, a shaft seat is further provided between the swing arm 500 and the protection device 300. The shaft seat is rotationally connected to the slipping shaft 320 through a first bearing. Specifically, the shaft seat is a sliding bearing seat 610, and the first bearing is a sliding bearing 620.

[0056] To enable the swing arm 500 to have a self-locking function in both the erected locking position and the lowered unlocking position, and to accurately position these two positions to precisely control the operation of the driving device 200. Optionally, please refer to Figures 4 to 7 and Figure 12, in this embodiment, one end of the slipping shaft 320 extending out of the shaft sleeve 310 is drivingly connected to the swing arm 500 through a crank-rocker mechanism 400. The crank-rocker mechanism 400 includes a crank 410, a connecting rod 420, and a rocker 430. One end of the crank 410 is drivingly connected to the slipping shaft 320, the other end of the crank 410 is hinged to the connecting rod 420, one end of the rocker 430 is hinged to the end of the connecting rod 420 away from the crank 410, and the other end of the rocker 430 is drivingly connected to the swing arm 500. The transmission device further includes a first sensing member 710, a second sensing member 720, and a control device (not shown in the figure). Among them, the first sensing member 710 is disposed at the first extreme position of the swing of the rocker 430 for sensing that the rocker 430 swings to the first extreme position, that is, the rocker 430 swings to one of the dead center positions; the second sensing member 720 is disposed at the second extreme position of the swing of the rocker 430 for sensing that the rocker 430 swings to the second extreme position, that is, the rocker 430 swings to the other dead center position; the control device is electrically connected to the driving device 200, the first sensing member 710, and the second sensing member 720, and is used to control the operation of the driving device 200 according to the sensing signals transmitted by the first sensing member 710 and the second sensing member 720. It can be understood that when the rocker 430 swings to the first extreme position, the swing rod 510 is correspondingly set to the unlocked state of being lowered, and when the rocker 430 swings to the second extreme position, the swing rod 510 is correspondingly set to the locked state of being erected. In this way, the swing rod 510 can have a self-locking function in both the unlocked state of being lowered and the locked state of being erected. And due to the existence of the first sensing member 710, the second sensing member 720, and the control device, the two extreme positions can be accurately positioned. Specifically, the control device can be an existing controller, so it will not be elaborated here. Specifically, the swing angle of the rocker 430 can be exactly 90 degrees by adjusting the lengths of the crank 410, the connecting rod 420, and the rocker 430 of the crank-rocker mechanism 400, so as to achieve a 90-degree swing of the swing rod 510. Specifically, the length ratio of the crank 410, the connecting rod 420, and the rocker 430 is the prior art, so it will not be elaborated here.

[0057] Optionally, please refer to Figures 4 to 7 and Figure 12 , in this embodiment, both the first sensing member 710 and the second sensing member 720 are microswitches. Of course, in some other embodiments, the first sensing member 710 and the second sensing member 720 can also be infrared sensors, ultrasonic sensors, magnetic sensors. There is no specific limitation here, as long as they can accurately detect the swing arm 500 when the rocker 430 swings to the first extreme position and the second extreme position.

[0058] To improve the waterproof performance of the transmission device, optionally, please refer to Figure 1 and Figure 8, in this embodiment, the transmission device further includes a waterproof protection box 800 disposed on the bottom plate 100. The control device, the driving device 200, the protection device 300, the crank-rocker mechanism 400, the first sensing member 710, and the second sensing member 720 are all assembled in the waterproof protection box 800. Specifically, the waterproof protection box 800 includes a waterproof box housing 810, a waterproof box top cover 820, and a sealing ring 850. The waterproof box housing 810 is fixedly arranged on the bottom plate 100 through fasteners 830, and the waterproof box top cover 820 is sealingly connected to the waterproof box housing 810 through the sealing ring 850.

[0059] To improve the stability of the rotation of the swing arm 500, optionally, please refer to Figure 2 and Figure 9 , in this embodiment, the transmission device further includes a first transmission shaft 130; two second bearings are arranged inside a side wall of the waterproof protection box 800; one end of the first transmission shaft 130 is fixedly arranged with the swing arm 500, the other end is fixedly arranged with the rocker 430, and is fixedly arranged with the inner rings of the two second bearings. Specifically, the second bearing is a deep groove ball bearing 840.

[0060] Optionally, please refer to Figure 2 and Figure 3 , in this embodiment, a rotating bracket 110 is arranged at a position of the bottom plate 100 away from the first transmission shaft 130, and a second transmission shaft 140 is rotatably arranged on the rotating bracket 110; the swing arm 500 is U-shaped, one swing rod 510 of the swing arm 500 is fixedly arranged with the first transmission shaft 130, and the other swing rod 510 of the swing arm 500 is fixedly arranged with the second transmission shaft 140. Optionally, the first transmission shaft 130 is fixedly arranged with one swing rod 510 and the rocker 430 through a screw 120; the second transmission shaft 140 is fixedly arranged with one swing rod 510 through a screw 120.

[0061] Another aspect of the embodiment of the present utility model provides a parking lock 1000, including: a bottom plate 100, a driving device 200, a swing arm 500, and the above-mentioned transmission device. The bottom plate 100 is used for assembling various components and is fixed on the parking space ground during use. The driving device 200 is arranged on the bottom plate 100 and is used to provide power. The swing arm 500 is rotatably arranged on the bottom plate 100 so that the swing arm 500 can be in a raised locking state or a lowered unlocking state. The transmission device is assembled and fixed on the bottom plate 100 and is used to transmit the power of the driving device 200 to the swing arm $500$ and protect the driving device. Since the parking lock 1000 has all the structures and connection relationships of the transmission device, therefore, it has all the advantages of the transmission device, which will not be elaborated here.

[0062] Optionally, please refer to Figure 1 , Figure 2 and Figure 4, in this embodiment, the driving device 200 includes a driving motor 210 and a speed reducer 220. The driving motor 210 and the speed reducer 220 are in transmission connection. The parking lock 1000 further includes a power supply 900 and a protective housing 150.

[0063] The power supply 900 is arranged on the bottom plate 100 and is electrically connected to the driving device 200 and the control device, and is used to supply power to the driving device 200 and the control device. The protective housing 150 is assembled and connected to the bottom plate 100 and encloses an assembly cavity with the bottom plate 100. The driving device 200, the protection device 300, the crank-rocker mechanism 400, the waterproof protection box 800, the power supply 900, etc. are all assembled in this assembly cavity. In this way, it can play a protective role for each component in the assembly cavity.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A transmission device, applied to a parking space lock, characterized in that, Comprising: A protection device (300); The protection device (300) includes a bushing (310) drivingly connected to the output shaft (221) of a driving device (200), a slipping shaft (320) frictionally drivingly connected to the bushing (310), one end of the slipping shaft (320) extending out of the bushing (310) being drivingly connected to a swing arm (500), and the slipping shaft (320) being able to idle relative to the bushing (310) when exceeding a preset frictional force.

2. The transmission device according to claim 1, characterized in that, The bushing (310) includes a connecting section (311), a clamping section (312) and a clamping spring (313); the connecting section (311) is drivingly connected to the output shaft (221) of the driving device (200); the clamping section (312) is cylindrical, and axial gaps (d) are circumferentially and spacedly arranged on the cylindrical wall of the clamping section (312); the clamping spring (313) is disposed around the outer periphery of the clamping section (312).

3. The transmission device according to claim 2, characterized in that, A shaft seat is further provided between the swing arm (500) and the protection device (300), and the shaft seat is rotationally connected to the slipping shaft (320) through a first bearing.

4. The transmission device according to any one of claims 1-3, characterized in that, One end of the slipping shaft (320) extending out of the bushing (310) is drivingly connected to the swing arm (500) through a crank rocker mechanism (400); the crank rocker mechanism (400) includes a crank (410), a connecting rod (420) and a rocker (430), one end of the crank (410) being drivingly connected to the slipping shaft (320), the other end of the crank (410) being hinged to the connecting rod (420), one end of the rocker (430) being hinged to the end of the connecting rod (420) away from the crank (410), and the other end of the rocker (430) being drivingly connected to the swing arm (500); further included are a first sensing member (710) disposed at the first limit position of the swing of the rocker (430), a second sensing member (720) disposed at the second limit position of the swing of the rocker (430), and a control device electrically connected to the driving device (200), the first sensing member (710) and the second sensing member (720) and used for controlling the operation of the driving device (200).

5. The transmission device according to claim 4, characterized in that, The first sensing member (710) and the second sensing member (720) are microswitches, infrared sensors, ultrasonic sensors, or magnetic sensors.

6. The transmission device according to claim 4, characterized in that, Further included is a waterproof protection box (800); the control device, the driving device (200), the protection device (300), the crank rocker mechanism (400), the first sensing member (710) and the second sensing member (720) are all assembled in the waterproof protection box (800).

7. The transmission device according to claim 6, wherein Further included is a first transmission shaft (130); two second bearings are disposed inside a side wall of the waterproof protection box (800); one end of the first transmission shaft (130) is fixedly configured with the swing arm (500), the other end is fixedly configured with the rocker (430), and is fixedly configured with the inner rings of the two second bearings.

8. A parking space lock, characterized in that, Comprising: A bottom plate (100); A driving device (200); A swing arm (500); and a transmission device as described in any one of claims 1-7; The drive device (200), the transmission device, and the swing arm (500) are assembled and fixed on the bottom plate (100).

9. The parking space lock according to claim 8, characterized in that, The drive device (200) includes a drive motor (210) and a reduction gearbox (220) that is drivingly connected to the drive motor (210).

10. The parking space lock according to any one of claims 8-9, characterized in that, It further includes a power supply (900) disposed on the bottom plate (100) and electrically connected to the drive device (200), and a protective housing (150) that is assembled and connected to the bottom plate (100) and encloses an assembly cavity with the bottom plate (100).

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