Clutch device of intelligent lock box

Abstract

The utility model provides a clutch device of an intelligent lock box. The clutch device overcomes the defects that due to the fact that the lock box actively controls a spring bolt to stretch out and draw back, the cost of a motor is high, the size is increased, and reliability is insufficient. The motor shaft sleeve is fixedly mounted on the motor; the clutch rotating shaft is rotationally mounted in the lock box; the motor shaft sleeve is mounted in the clutch rotating shaft; the lock tongue is elastically mounted on the lock box; an angle limiting column is fixed on the clutch rotating shaft; a reverse rotation limiting boss and a forward rotation limiting boss are fixed to the lock box, the reverse rotation limiting boss is located on a reverse rotation path of the angle limiting column, when the clutch rotating shaft rotates reversely, the angle limiting column can make contact with the reverse rotation limiting boss, and the forward rotation limiting boss is located on a forward rotation path of the angle limiting column. The angle limiting column can make contact with the forward rotation limiting boss. A groove is formed in the clutch rotating shaft, when the angle limiting column makes contact with the reverse rotation limiting boss, the groove is back to the spring bolt, and when the angle limiting column makes contact with the forward rotation limiting boss, the groove right faces the spring bolt.

Description

Technical Field

[0001] This utility model relates to a clutch device for an intelligent lock box. Background Technology

[0002] Existing smart lock boxes require a motor to actively drive the bolt extension and retraction, which increases the current of the drive motor and the size of the motor, thus increasing the cost. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and provide a clutch device for a smart lock box with a reasonable structural design, which solves the problems of high motor cost, increased size and insufficient reliability caused by the active control of the lock tongue extension and retraction in the lock box.

[0004] The technical solution adopted by this utility model to solve the above problems is: a clutch device for an intelligent lock box, characterized in that: it includes a lock box, a motor, a motor bushing, a clutch shaft, and a lock tongue; the motor is installed inside the lock box; the motor bushing is fixedly installed on the motor; the clutch shaft is rotatably installed inside the lock box; the motor bushing is installed inside the clutch shaft; the lock tongue is elastically installed on the lock box; characterized in that: the clutch shaft is fixed with an angle limiting post; the lock box is fixed with a reverse limiting boss and a forward limiting boss, the reverse limiting boss is located on the reverse path of the angle limiting post, when the clutch shaft reverses, the angle limiting post can contact the reverse limiting boss, the forward limiting boss is located on the forward path of the angle limiting post, when the clutch shaft rotates forward, the angle limiting post can contact the forward limiting boss; a groove is provided on the clutch shaft, when the angle limiting post contacts the reverse limiting boss, the groove faces away from the lock tongue, when the angle limiting post contacts the forward limiting boss, the groove faces the lock tongue.

[0005] This utility model also includes a circuit board, which is installed inside the lock box and electrically connected to the motor via wires.

[0006] The circuit board of this invention is equipped with a Hall sensor.

[0007] This utility model also includes a rubber sleeve, in which the motor is installed, and the rubber sleeve is installed in the lock box.

[0008] The motor bushing of this utility model has a spring hole, and a steel ball is elastically installed in the spring hole. A part of the steel ball is set in a steel ball groove opened on the clutch shaft.

[0009] The steel ball described in this invention is elastically installed in the spring hole via a steel ball spring.

[0010] This utility model also includes a locking tongue spring, on which a cylinder is provided and the locking tongue spring is provided.

[0011] Compared with the prior art, this utility model has the following advantages and effects: it solves the shortcomings of high motor cost, increased size and insufficient reliability caused by active control of the lock tongue extension and retraction in the lock box. The extension and retraction of the lock tongue in this utility model is passive, which can use a smaller motor and will not cause motor stall. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the lock box structure according to an embodiment of the present utility model.

[0014] Figure 3 This is a partial structural diagram of an embodiment of the present utility model.

[0015] Figure 4 and Figure 5 All of these are schematic diagrams of the clutch shaft in embodiments of this utility model.

[0016] Figure 6 and Figure 7 These are schematic diagrams of the assembly of the clutch shaft and motor shaft in embodiments of this utility model.

[0017] Figure 8 This is a schematic diagram of the structure of the cylinder on the locking tongue being pushed into the groove in an embodiment of the present invention.

[0018] Figure 9 This is a schematic diagram of the structure of the groove on the clutch shaft facing away from the locking tongue in an embodiment of this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0020] This utility model embodiment includes a lock box 110, a circuit board 100, a rubber sleeve 120, a motor 130, a motor bushing 140, a steel ball 150, a steel ball spring 160, a clutch shaft 170, a lock tongue 180, and a lock tongue spring 190.

[0021] The circuit board 100 is installed inside the lock box 110 and is electrically connected to the motor 130 via wires. A Hall sensor 1001 is provided on the circuit board 100. The motor 130 is installed inside the rubber sleeve 120, which is installed in the motor mounting slot 1101 on the lock box 110. Thus, the motor 130 is installed inside the lock box 110. The rubber sleeve 120 is used to dampen the vibration when the motor 130 rotates.

[0022] The motor bushing 140 is fixedly mounted on the motor 130 through the cross groove 1401 opened on it, so that the motor bushing 140 can rotate together with the motor 130 when it rotates.

[0023] The clutch shaft 170 is installed in the shaft mounting groove 1104 on the lock box 110. A spring hole 1402 is provided on the motor bushing 140. Steel balls 150 are elastically installed in the spring hole 1402 via a steel ball spring 160, thus elastically mounting the steel balls 150 on the motor bushing 140. There are two steel balls 150, installed at both ends of the steel ball spring 160. The motor bushing 140 is installed in the bushing groove 1701 of the clutch shaft 170. Under the elastic force of the steel ball spring 160, half of the steel balls 150 are placed in the spring hole 1402, and the other half is placed in the steel ball groove 1704 on the clutch shaft 170, thus elastically connecting the motor bushing 140 and the clutch shaft 170. When there is no external force or a small external force on the clutch shaft 170, the motor 130 rotates, driving the motor bushing 140 to rotate as well. Then, under the elastic force of the steel ball 150 and the steel ball spring 160, the clutch shaft 140 rotates together. When the clutch shaft 140 cannot rotate, the steel ball 150 can roll on the steel ball groove 1704, causing the motor bushing 140 to rotate relative to the clutch shaft 170, allowing the motor 130 to continue rotating without stalling.

[0024] The clutch shaft 170 is fixed with an angle limiting post 1703, which rotates together with the clutch shaft 170.

[0025] The lock box 110 is fixed with a reverse limiting boss 1003 and a forward limiting boss 1004. The reverse limiting boss 1003 is located on the reverse path of the angle limiting post 1703. When the clutch shaft 170 reverses, the angle limiting post 1703 can contact the reverse limiting boss 1003. The forward limiting boss 1004 is located on the forward path of the angle limiting post 1703. When the clutch shaft 170 rotates forward, the angle limiting post 1703 can contact the forward limiting boss 1004.

[0026] The latch 180 is movably mounted in the latch mounting groove 1102 on the lock box 110. The latch spring 190 is sleeved on the cylinder 1801 of the latch 180, so that the latch 180 is elastically mounted on the lock box 110. A groove 1702 is provided on the clutch shaft 170. The groove 1702 cooperates with the latch 180. When the angle limiting post 1703 contacts the reverse limiting boss 1003, the groove 1702 faces away from the latch 180. When the angle limiting post 1703 contacts the forward limiting boss 1004, the groove 1702 faces the latch 180.

[0027] The working process of this utility model is as follows:

[0028] See Figure 9When the Hall sensor 1001 on the circuit board 100 is triggered by magnetic material, the motor 130 rotates in the reverse direction, causing the motor bushing 140 to rotate in the reverse direction as well. The motor bushing 140, through the elastic connection of the steel ball 150 and the steel ball spring 160, causes the clutch shaft 170 to rotate in the reverse direction as well. When the clutch shaft 170 rotates to the point where the angle limit post 1703 contacts the reverse limit boss 1003 on the lock box 110, the clutch shaft 170 stops rotating. The motor 130 rotates for a fixed time and then stops. At this time, the groove 1702 on the clutch shaft 170 faces away from the lock tongue 180. When an external force pushes the lock tongue 180, the cylinder 1801 on the lock tongue 180 is blocked by the clutch shaft 170 and cannot be pressed down.

[0029] See Figure 8 When the Hall sensor 1001 on the circuit board 100 is not triggered by the magnetic material, the motor 130 rotates in the forward direction, driving the motor bushing 140 to rotate in the forward direction as well. The motor bushing 140, through the elastic connection of the steel ball 150 and the steel ball spring 160, causes the clutch shaft 170 to rotate in the forward direction as well. When the clutch shaft 170 rotates to the point where the angle limit post 1703 contacts the forward rotation limit boss 1004 on the lock box 110, the clutch shaft 170 stops rotating. The motor 130 rotates for a fixed time and then stops. At this time, the groove 1702 on the clutch shaft 170 is facing the latch 180. When an external force pushes the latch 180, the cylinder 1801 on the latch 180 can be pushed into the groove 1702, and the latch 180 can be pressed down. After the external force disappears, the latch spring 190 pushes the latch 180 out of the groove 1702.

[0030] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A clutch device for a smart lock box, characterized in that: The device includes a lock box, a motor, a motor bushing, a clutch shaft, and a latch. The motor is installed inside the lock box. The motor bushing is fixedly installed on the motor. The clutch shaft is rotatably installed inside the lock box. The motor bushing is installed inside the clutch shaft. The latch is elastically installed on the lock box. The device is characterized by: the clutch shaft being fixed with an angle limiting post; the lock box having a reverse limiting boss and a forward limiting boss, the reverse limiting boss being located on the reverse path of the angle limiting post, so that when the clutch shaft reverses, the angle limiting post can contact the reverse limiting boss; the forward limiting boss being located on the forward path of the angle limiting post, so that when the clutch shaft rotates forward, the angle limiting post can contact the forward limiting boss; the clutch shaft has a groove, so that when the angle limiting post contacts the reverse limiting boss, the groove faces away from the latch; when the angle limiting post contacts the forward limiting boss, the groove faces the latch.

2. The clutching device of the intelligent lock box according to claim 1, wherein: It also includes a circuit board, which is installed inside the lock box and electrically connected to the motor via wires.

3. The clutching device of the intelligent lock box according to claim 2, wherein: A Hall sensor is installed on the circuit board.

4. The clutching device of the intelligent lock box according to claim 1, wherein: It also includes a rubber sleeve, with the motor installed inside the rubber sleeve, which is installed inside the lock box.

5. The clutching device of the intelligent lock box according to claim 1, wherein: The motor bushing has a spring hole, and a steel ball is elastically installed in the spring hole. A portion of the steel ball is located in a steel ball groove on the clutch shaft.

6. The clutching device of the intelligent lock box according to claim 5, wherein: The steel ball is elastically mounted in the spring hole by a steel ball spring.

7. The clutching device of the smart lockbox of claim 1, wherein: It also includes a latch spring, on which a cylinder is provided and the latch spring is located.

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