Driving device and electric lock applying same

Abstract

The utility model relates to a driving device and an electric lock using the same. The driving device comprises a motor and a working head, the working head can be driven by the motor to rotate, and the working head comprises a non-circular first connecting part; the driving device further comprises a spiral spring, and one end of the spiral spring is provided with a non-circular second connecting part. The shape of the second connecting part is matched with that of the first connecting part, and one of the first connecting part and the second connecting part is sleeved on the other one of the first connecting part and the second connecting part, so that the spiral spring can rotate along with the rotation of the working head. The working head is provided with the non-circular first connecting part, the spiral spring is provided with the non-circular second connecting part, and one of the non-circular first connecting part and the non-circular second connecting part is sleeved on the other one of the non-circular first connecting part and the non-circular second connecting part, so that the spiral spring can rotate along with the rotation of the working head, and the risk that the spiral spring slips or falls off is reduced.

Description

Technical Field

[0001] The utility model relates to a driving device and an electric lock applying the driving device, and particularly relates to a door lock.

Background Art

[0002] An existing driving device includes a motor, a gearbox and a spiral spring. The gearbox decelerates the output of the motor and then drives an external object through the spiral spring. One disadvantage of this solution is that the connection between the spiral spring and the output end of the gearbox is not stable enough, and it is easy to slip or fall off. Therefore, an improved solution is urgently needed.

Content of the Utility Model

[0003] One object of this application is to reduce the risk of slipping or falling off of the spiral spring in the driving device.

[0004] To this end, in one aspect of this application, a driving device is provided, which includes a motor and a working head. The working head can be driven by the motor to rotate. The working head includes a non-circular first connecting portion. The driving device further includes a spiral spring, and one end of the spiral spring has a non-circular second connecting portion. The shape of the second connecting portion matches the shape of the first connecting portion. One of the first connecting portion and the second connecting portion is sleeved on the other, so that the spiral spring can rotate along with the rotation of the working head.

[0005] In one embodiment of the utility model, the second connecting portion is sleeved on the outer periphery of the first connecting portion.

[0006] In one embodiment of the utility model, the second connecting portion includes a plurality of turns of non-circular coils wound in a spiral manner. The spiral spring further includes a main body portion, and the coils wound in the main body portion are substantially circular.

[0007] In one embodiment of the utility model, a speed reduction mechanism connected to the motor is further included. The speed reduction mechanism decelerates the output of the motor and then drives the working head to rotate.

[0008] In one embodiment of the utility model, the speed reduction mechanism is a gearbox, which includes a speed reduction structure of two or more stages.

[0009] In one embodiment of the utility model, the speed reduction mechanism is a gearbox. The gearbox includes a first pinion gear, a first large gear, a second pinion gear and a second large gear. The first pinion gear is coaxially and fixedly connected to the rotating shaft of the motor and rotates along with the rotating shaft. The first large gear meshes with the first pinion gear. The second pinion gear is coaxially and fixedly connected to the first large gear. The second large gear meshes with the second pinion gear.

[0010] In an embodiment of the present utility model, the speed reduction mechanism is a gearbox, and the working head is coaxially fixed to the output end of the gearbox; the working head and the motor are located on the same side of the gearbox, and the rotation central axes of both are substantially parallel.

[0011] In an embodiment of the present utility model, the working head includes a limiting portion, and the limiting portion protrudes relative to the first connecting portion for limiting the depth of the second connecting portion sleeved on the working head.

[0012] In an embodiment of the present utility model, the cross-section of the first connecting portion is oval, square or rectangular.

[0013] In another aspect of the present application, there is provided an electric lock, including a housing, a locking mechanism disposed in the housing, and the driving device described above in the present application. The driving device is disposed in the housing for driving the locking mechanism to lock and unlock.

[0014] The working head adopted in the present utility model has a non-circular first connecting portion, and the spiral spring has a non-circular second connecting portion. One of the first connecting portion and the second connecting portion is sleeved on the other, so that the spiral spring can rotate with the rotation of the working head, and the risk of the spiral spring slipping or falling off is reduced.

Description of the Drawings

[0015] To further disclose the specific technical content of this case, please first refer to the drawings, where:

[0016] Figure 1 is a schematic diagram of an embodiment of the electric lock provided by the present utility model;

[0017] Figure 2 is Figure 1 a schematic diagram of the electric lock shown after removing the cover plate;

[0018] Figure 3 is Figure 1 a schematic diagram of the electric lock shown after removing the cover plate and the gearbox housing;

[0019] Figure 4 is Figure 1 a schematic diagram of the driving device used in the electric lock shown;

[0020] Figure 5 is Figure 4 an exploded schematic diagram of the driving device shown.

Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be described in conjunction with the drawings of the present utility model.

[0022] Please refer to Figure 1And Figure 2 , in one embodiment, the electric lock 100 provided by the present utility model includes a housing 21, a driving device 70 disposed in the housing 21, a locking mechanism 80, etc. The driving device 70 is used to drive the locking mechanism 80 to lock and unlock. The locking mechanism 80 can adopt an existing locking mechanism. For example, the locking mechanism 80 can include a retractable lock tongue (not shown in the figure). When the lock tongue extends, it is in a locked state, and when the lock tongue retracts, it is in an unlocked state. The locking mechanism 80 can include a lock hole 81 for installing a door handle or installing a door handle and a mechanical lock core.

[0023] The driving device 70 includes a motor 30, a reduction mechanism 40, a working head 50, and a spiral spring 60. The reduction mechanism 40 is connected to the motor 30, reduces the output of the motor 30, and then drives the working head 50 to rotate. One end of the spiral spring 60 is sleeved on the working head 50 and rotates with the rotation of the working head 50. The other end of the spiral spring 60 is connected to a driven body (not shown in the figure). When the motor 30 rotates, the reduction mechanism 40 drives the working head 50 to rotate, thereby driving the spiral spring 60 to rotate. The spiral spring 60 drives the driven body to move up and down or rotate, thereby driving the locking mechanism 80 to lock or unlock.

[0024] A motor receiving cavity 23, a reduction mechanism receiving cavity 24, a working head receiving cavity 25, and a spiral spring receiving cavity 26 are provided in the housing 21. The motor 30, the reduction mechanism 40, the working head 50, and the spiral spring 60 of the driving device 70 are respectively received in the motor receiving cavity 23, the reduction mechanism receiving cavity 24, the working head receiving cavity 25, and the spiral spring receiving cavity 26. In this embodiment, the motor receiving cavity 23, the reduction mechanism receiving cavity 24, the working head receiving cavity 25, and the spiral spring receiving cavity 26 are formed on the same side of the plate 22. Preferably, the plate 22 integrally forms the motor receiving cavity 23, the reduction mechanism receiving cavity 24, the working head receiving cavity 25, and the spiral spring receiving cavity 26 to reduce costs and ensure the relative positional relationship between the components. The plate 22 can be an independent component or a part of the housing 21. The clip 28 is fixed to the housing 21 to clamp the driving device 70 to the plate 22. In addition, the reduction mechanism 40 can be further fixed to the housing 21 through an additional connecting member.

[0025] Please refer to Figures 3 to 5, the working head 50 includes a non-circular first connecting portion 51. One end of the helical spring 60 has a non-circular second connecting portion 61, and the shape of the second connecting portion 61 matches the shape of the first connecting portion 51. The second connecting portion 61 is sleeved on the outer periphery of the first connecting portion 51. Understandably, the first connecting portion 51 may also be a non-circular receiving cavity with an opening, and this receiving cavity is sleeved on the outer periphery of the second connecting portion 61. By using the non-circular first connecting portion 51 and the second connecting portion 61, with one of them sleeved on the other, the helical spring 60 can rotate along with the rotation of the working head 50, and the risk of the helical spring 60 slipping or falling off can be reduced.

[0026] In this embodiment, the cross-section of the first connecting portion 51 of the working head 50 is rectangular. Understandably, the cross-section of the first connecting portion 51 may also be non-circular shapes such as oval, square, etc.

[0027] In this embodiment, the working head 50 further includes a limiting portion 53, which protrudes relative to the first connecting portion 51 and is used to limit the depth of the second connecting portion 61 sleeved on the working head 50. The helical spring 60 includes a second connecting portion 61 and a main body portion 62. The second connecting portion 61 includes several turns of helically wound non-circular coils, and the wound coils of the main body portion 62 are basically circular.

[0028] The speed reduction mechanism 40 is a gearbox, preferably including a speed reduction structure with two or more stages. In this embodiment, the gearbox includes a first pinion 41, a first large gear 43, a second pinion 45, and a second large gear 47. Among them, the first pinion 41 is coaxially and fixedly connected to the rotating shaft 31 of the motor 30 and rotates with the rotating shaft 31. The first large gear 43 meshes with the first pinion 41 to achieve the first-stage speed reduction. The second pinion 45 is coaxially and fixedly connected to the first large gear 43, and the second large gear 47 meshes with the second pinion 45 to achieve the second-stage speed reduction. When the second large gear 47 rotates, it will drive the output shaft 48 to rotate, and the output shaft 48 also serves as the output end of the gearbox. An installation hole 55 is provided at the center of the working head 50 for fixedly sleeving on the output shaft 48 of the gearbox to achieve coaxial fixation. In this embodiment, the working head 50 and the motor 30 are located on the same side of the gearbox, and the rotation center axes of the two are basically parallel, making the structure more compact.

[0029] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A driving device, comprising a motor and a working head, wherein the working head can be driven by the motor to rotate, characterized in that: The working head includes a non-circular first connecting portion; the driving device also includes a coil spring, one end of which has a non-circular second connecting portion; the shape of the second connecting portion matches the shape of the first connecting portion, and one of the first connecting portion and the second connecting portion is sleeved onto the other of the first connecting portion, so that the coil spring can rotate with the rotation of the working head.

2. The driving device according to claim 1, characterized in that: The second connection portion is sleeved onto the outer periphery of the first connection portion.

3. The driving device according to claim 2, characterized in that: The second connecting portion includes a plurality of turns of a helically wound non-circular coil; the helical spring also includes a main body portion, and the wound coil of the main body portion is substantially circular.

4. The driving device according to claim 1, characterized in that: It also includes a speed reduction mechanism connected to the motor, and the speed reduction mechanism reduces the speed of the motor and then drives the working head to rotate.

5. The driving device according to claim 4, characterized in that: The speed reduction mechanism is a gear box, which includes a two-stage or more speed reduction structure.

6. The driving device according to claim 4, characterized in that: The reduction mechanism is a gear box, which includes a first pinion, a first large gear, a second pinion and a second large gear; the first pinion is coaxially fixedly connected to the rotating shaft of the motor and rotates with the rotating shaft; the first large gear is meshed with the first pinion; the second pinion is coaxially fixedly connected to the first large gear; and the second large gear is meshed with the second pinion.

7. The driving device according to claim 4, characterized in that: The speed reduction mechanism is a gear box, and the working head is coaxially fixed with the output end of the gear box; the working head and the motor are located on the same side of the gear box, and the central axes of rotation of the two are substantially parallel.

8. The driving device according to claim 2, characterized in that: The working head comprises a limiting portion, which is protruding relative to the first connecting portion and is used to limit the depth of the second connecting portion being sleeved on the working head.

9. The driving device according to claim 1, characterized in that: The cross section of the first connecting portion is oval, square or rectangular.

10. An electric lock, comprising a housing and a locking mechanism disposed in the housing, characterized in that: It also includes a driving device as described in any one of claims 1 to 9, wherein the driving device is arranged in the housing to drive the locking mechanism to lock and unlock.

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