Low-power-consumption electronic lock

Abstract

The utility model discloses a low-power-consumption electronic lock which reduces power consumption and comprises a lock body, a lock cylinder tail, a motor, a rotating shaft, a cam, an elastic piece and a locking piece. A movable cavity is formed in the lock body, and a first locking groove is formed in the side wall of the movable cavity; the lock cylinder tail is rotationally matched in the movable cavity and is provided with a mounting cavity; the side wall of the mounting cavity is provided with a limiting rib and a movable hole penetrating to the tail circumferential surface of the lock cylinder; the motor is fixed in the mounting cavity; the rotating shaft is in transmission connection with the motor; the cam rotatably sleeves the rotating shaft, and the circumferential surface of the cam is sequentially provided with an arc surface, a second locking groove and a limiting groove; the inner wall of the cam is provided with a limiting notch communicating with the limiting groove. The limiting ribs are movably matched in the limiting grooves, and the blocking corners are movably matched in the limiting notches. The elastic piece is used for driving the cam to reset; the locking piece is movably matched in the movable hole and movably matched with the first locking groove or the second locking groove along with relative rotation of the lock cylinder tail in the lock body.

Description

Technical Field

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

[0002] The working mode of an electronic intelligent lock is generally that a user inputs a password. When the password is correct, an unlocking instruction is given to a motor and the unlocking time is specified, causing the motor to rotate forward and drive the unlocking. After the unlocking time ends, the motor rotates in reverse to lock the lock.

[0003] In the prior art, structures such as a locking pin and a fixing block are generally arranged between the tail of the lock core and the lock body of the electronic lock. The motor drives the locking pin and the fixing block to be movably matched to realize the locking or unlocking of the lock core and the lock body. However, when the motor drives the locking pin, the rotation angle is relatively large, resulting in a longer working time and a relatively high power consumption. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a low-power electronic lock, solve the problems existing in the prior art, and achieve power consumption reduction.

[0005] To achieve the above purpose, the solution of the utility model is:

[0006] A low-power electronic lock includes a lock body, a lock core tail, a motor, a rotating shaft, a cam, an elastic member, and a locking member; an activity cavity is arranged in the lock body, and a first locking groove is arranged on the side wall of the activity cavity; the lock core tail is rotatably fitted in the activity cavity and is provided with an installation cavity; a limiting rib is arranged on the side wall of the installation cavity, and an activity hole penetrating to the peripheral surface of the lock core tail; the motor is fixed in the installation cavity; the rotating shaft is in transmission connection with the motor, and a stop angle is arranged on its side surface; the cam is rotatably sleeved on the rotating shaft, and an arc surface, a second locking groove, and a limiting groove are sequentially arranged on its peripheral surface; a limiting notch communicating with the limiting groove is arranged on the inner wall of the cam; the limiting rib is movably fitted in the limiting groove, and the stop angle is movably fitted in the limiting notch; the elastic member is used to drive the cam to reset; the locking member is movably fitted in the activity hole and movably cooperates with the first locking groove or the second locking groove as the lock core tail rotates relative to the lock body.

[0007] Both the first locking groove and the second locking groove are V-shaped grooves.

[0008] The output shaft of the motor and the rotating shaft are assembled by key connection.

[0009] The elastic member is a torsion spring, the torsion spring is sleeved on the rotating shaft, and its two ends are relatively fixed to the rotating shaft and the cam respectively.

[0010] Preferably, a sector groove is provided on the end face of the rotating shaft, and a shaft portion is provided in the sector groove; an installation groove is provided on the cam; the elastic member is sleeved on the shaft portion, and its two ends are respectively inserted into the bottom of the sector groove and the installation groove.

[0011] The low-power electronic lock further includes a lock shell fixedly opposite to the tail of the lock core, and a battery compartment is detachably installed in the lock shell.

[0012] Preferably, the low-power electronic lock further includes a screw; the battery compartment is provided with a through hole, and an internal thread matching the screw is provided in the through hole; the lock shell is provided with a screw hole coaxial with the through hole; the screw passes through the through hole and is threadedly connected in the screw hole, or the screw is threadedly connected with the internal thread.

[0013] Preferably, the screw includes a screw rod matching the internal thread and the screw hole, and a round rod passing through the through hole.

[0014] The limiting rib abuts against the end face of the motor.

[0015] The locking member is a steel ball.

[0016] After adopting the above technical solution, the utility model has the following technical effects:

[0017] The utility model controls the state of the locking member through a cam linked with the rotating shaft on the output shaft of the motor, thereby changing the state of the lock: by adopting accessories such as a rotating shaft, a cam, an elastic member and a locking member, the rotation angle of the motor is reduced and the working time is shortened. Especially when locking, the motor can drive the rotating shaft to reset first under the command control, and then rely on the elastic force of the elastic member to reset the cam, and there is no need to continuously supply power to the motor, thereby reducing the power consumption of the lock. Description of the Drawings

[0018] Figure 1 is a perspective view of a specific embodiment of the utility model;

[0019] Figure 2 is an exploded view of a specific embodiment of the utility model;

[0020] Figure 3 is a partial exploded view of a specific embodiment of the utility model;

[0021] Figure 4 is a cross-sectional view of the tail of the lock core of a specific embodiment of the utility model;

[0022] Figure 5 is a schematic diagram of the locked state of a specific embodiment of the utility model;

[0023] Figure 6Schematic diagram of the unlocking state of a specific embodiment of the present utility model;

[0024] Figure 7 Schematic diagram of the automatic locking state of a specific embodiment of the present utility model;

[0025] Figure 8 Schematic diagram of the assembly of the battery compartment and the lock case of a specific embodiment of the present utility model;

[0026] Explanation of the reference numerals in the drawings:

[0027] 1 - Lock body; 11 - Activity cavity; 12 - First locking groove; 2 - Tail of lock core; 21 - Installation cavity; 22 - Limiting rib; 23 - Activity hole; 3 - Motor; 4 - Rotating shaft; 41 - Blocking angle; 42 - Sector groove; 43 - Shaft part; 5 - Cam; 51 - Arc surface; 52 - Second locking groove; 53 - Limiting groove; 54 - Limiting notch; 55 - Installation groove; 6 - Elastic member; 7 - Locking member; 8 - Lock case; 81 - Screw hole; 9 - Battery compartment; 91 - Perforation; 92 - Internal thread; 10 - Button battery; 20 - Screw; 201 - Screw rod; 202 - Round rod. Detailed implementation manners

[0028] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0029] Refer to Figure 1-8 As shown, the present utility model discloses a low - power electronic lock, including a lock body 1, a tail of lock core 2, a motor 3, a rotating shaft 4, a cam 5, an elastic member 6 and a locking member 7;

[0030] An activity cavity 11 is arranged in the lock body 1, and a first locking groove 12 is arranged on the side wall of the activity cavity 11;

[0031] The tail of lock core 2 is rotationally fitted in the activity cavity 11 and is provided with an installation cavity 21; limiting ribs 22 are arranged on the side wall of the installation cavity 21, and an activity hole 23 penetrating through the circumferential surface of the tail of lock core 2 is provided;

[0032] The motor 3 is fixed in the installation cavity 21;

[0033] The rotating shaft 4 is coaxially connected to the output shaft of the motor 3, and a blocking angle 41 is arranged on its side surface;

[0034] The cam 5 is rotatably sleeved on the rotating shaft 4, and an arc surface 51, a second locking groove 52 and a limiting groove 53 are sequentially arranged on its circumferential surface; a limiting notch 54 communicating with the limiting groove 53 is arranged on the inner wall of the cam 5; the limiting rib 22 is movably fitted in the limiting groove 53, the blocking angle 41 is movably fitted in the limiting notch 54, and when in the locked state, the blocking angle 41 movably abuts against the limiting rib 22;

[0035] The elastic member 6 is sleeved on the rotating shaft 4, and its two ends are relatively fixed to the rotating shaft 4 and the cam 5 respectively;

[0036] The locking member 7 is movably fitted in the moving hole 23, and is movably fitted in the first locking groove 12 or the second locking groove 52 as the locking core tail 2 rotates relative to the lock body 1: the locking member 7 is pushed by the arc surface 51 to be fitted in the first locking groove 12, and the locking core tail 2 is locked with the lock body 1, and the locking core tail 2 cannot rotate to lock the lock; when the second locking groove 52 is opposite to the moving hole 23, the locking member 7 disengages from the first locking groove 12 and falls into the second locking groove 52, the locking core tail 2 is unlocked from the lock body 1, and the locking core tail 2 can rotate to unlock the lock.

[0037] Through the above solution, the present utility model controls the state of the locking member 7 through the cam 5 linked with the rotating shaft 4 on the output shaft of the motor 3, thereby changing the state of the lock: refer to Figure 5 In the locked state, the motor 3 does not work, the arc surface 51 of the cam 5, the moving hole 23 of the locking core tail 2 and the first locking groove 12 of the lock body 1 are in the same straight line, the locking member 7 is pushed by the arc surface 51 into the first locking groove 12, so that the locking member 7 is stuck between the locking core tail 2 and the lock body 1, and the locking core tail 2 cannot rotate to maintain the locked state; refer to Figure 6 In the unlocked state, the motor 3 works, the gear angle 41 of the rotating shaft 4 pushes against the end of the limit notch 54 to drive the cam 5 to rotate, and the cam 5 stops rotating when the end of the limit groove 53 contacts the limit rib 22. At this time, the second locking groove 52 is opposite to the moving hole 23, and rotating the locking core tail 2 can make the locking member 7 disengage from the first locking groove 12 and fall into the second locking groove 52, and the locking core tail 2 rotates smoothly to unlock; refer to Figure 7 In the automatic locking state, after the motor 3 receives the locking command, it starts to work. Since the limit notch 54 of the cam 5 can provide a free rotation space for the rotating shaft 4, even if the locking core tail 2 has not rotated at this time, the motor 3 can drive the rotating shaft 4 to reset first until the gear angle 41 abuts against the limit rib 22 in the limit groove 53, the rotating shaft 4 rotates in place, and the elastic member 6 is compressed; after the user reverses the locking core tail 2, the cam 5 automatically resets under the action of the elastic member 6 (at this time the motor no longer provides power). When the locking core tail 2 rotates to the state where the moving hole 23 is opposite to the first locking groove 12, the locking member 7 is pushed into the first locking groove 12 by the cam 5, and the cam 5 continues to rotate until it is completely reset to complete automatic locking; by adopting accessories such as the rotating shaft 4, the cam 5, the elastic member 6 and the locking member 7, the present utility model reduces the rotation angle of the motor 3 and shortens the working time. Especially when locking, the motor 3 can drive the rotating shaft 4 to reset first under the command control, and then rely on the elastic force of the elastic member 6 to reset the cam 5, and there is no need to continuously supply power to the motor 3, thereby reducing the power consumption of the lock.

[0038] The following shows the specific embodiments of the present utility model.

[0039] The first locking groove 12 and the second locking groove 52 are both V-shaped grooves.

[0040] The above-mentioned technical features such as the first locking groove 12, the limiting rib 22, the movable hole 23, the stop angle 41, the arc surface 51, the second locking groove 52, the limiting groove 53, the limiting notch 54 and the locking member 7 are designed in two groups, which can improve the stability of the locking mechanism.

[0041] The output shaft of the motor 3 and the rotating shaft 4 are assembled by key connection, so the rotating shaft 4 can be flexibly disassembled and replaced.

[0042] The end surface of the rotating shaft 4 is provided with a fan-shaped groove 42, and a shaft portion 43 is provided in the fan-shaped groove 42; a mounting groove 55 is provided on the cam 5; the elastic member 6 is sleeved on the shaft portion 43, and its two ends are respectively inserted into the bottom of the fan-shaped groove 42 and the mounting groove 55.

[0043] The utility model further comprises a lock housing 8 fixed relatively to the lock core tail 2 , and a battery compartment 9 is detachably mounted in the lock housing 8 , and the battery compartment 9 is used for assembling a button battery 10 .

[0044] Furthermore, the utility model also includes a screw 20; the battery compartment 9 is provided with a through hole 91, and the through hole 91 is provided with an internal thread 92 matching the screw 20; the lock shell 8 is provided with a screw hole 81 coaxial with the through hole 91; the screw 20 is passed through the through hole 91 and threadedly connected in the screw hole 81 to lock the battery compartment 9; when the battery compartment 9 is opened, the screw 20 is threadedly connected to the internal thread 92 to prevent the screw 20 from being lost.

[0045] Secondly, the screw 20 includes a screw rod 201 matching the internal thread 92 and the screw hole 81, and a round rod 202 passing through the through hole 91. When the battery compartment 9 is opened, after the screw 20 exits the screw hole 81, since the round rod 202 in the middle section of the screw 20 is not threaded, it is not easy for the screw rod 201 of the screw 20 to align with the internal thread 92, so that the screw 20 is prevented from being separated from the battery compartment by continuing to rotate the screw 20, thereby preventing the screw 20 from being lost.

[0046] The limiting ribs 22 abut against the end surface of the motor 3 to fix the motor 3 .

[0047] The locking member 7 may be a columnar member or a spherical member, preferably a steel ball.

[0048] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A low-power electronic lock, characterized in that: It includes a lock body, a lock core tail, a motor, a rotating shaft, a cam, an elastic part and a locking part; The lock body is provided with an active cavity, and the side wall of the active cavity is provided with a first locking groove; The lock core tail is rotatably fitted in the active cavity and is provided with an installation cavity; the side wall of the installation cavity is provided with a limiting rib and an active hole penetrating to the circumference of the lock core tail; The motor is fixed in the mounting cavity; The rotating shaft is transmission-connected with the motor, and a gear angle is arranged on its side; The cam is rotatably sleeved on the rotating shaft, and the circumferential surface thereof is sequentially provided with an arc surface, a second locking groove and a limiting groove; the inner wall of the cam is provided with a limiting notch connected to the limiting groove; the limiting rib is movably fitted in the limiting groove, and the gear angle is movably fitted in the limiting notch; The elastic member is used to drive the cam to reset; The locking member is movably engaged in the movable hole, and is movably engaged in the first locking groove or the second locking groove as the lock core tail rotates relatively in the lock body.

2. The low-power electronic lock according to claim 1, characterized in that: The first locking groove and the second locking groove are both grooves with V-shaped structures.

3. The low power consumption electronic lock according to claim 1, characterized in that: The output shaft of the motor and the rotating shaft are assembled in a key connection manner.

4. The low power consumption electronic lock according to claim 1, characterized in that: The elastic member is a torsion spring, which is sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixed relatively to the rotating shaft and the cam.

5. The low power consumption electronic lock as claimed in claim 4, characterized in that: The end surface of the rotating shaft is provided with a fan-shaped groove, and a shaft portion is provided in the fan-shaped groove; a mounting groove is provided on the cam; the torsion spring is sleeved on the shaft portion, and its two ends are respectively inserted into the bottom of the fan-shaped groove and the mounting groove.

6. The low power consumption electronic lock according to claim 1, characterized in that: It also includes a lock shell fixed relative to the lock core tail, and a battery compartment is detachably installed in the lock shell.

7. The low power consumption electronic lock according to claim 6, characterized in that: It also includes a screw; the battery compartment is provided with a through hole, and the through hole is provided with an internal thread matching the screw; the lock shell is provided with a screw hole coaxial with the through hole; the screw is passed through the through hole and threadedly connected in the screw hole, or the screw is threadedly connected to the internal thread.

8. The low power consumption electronic lock according to claim 7, characterized in that: The screw comprises a screw rod matched with the internal thread and the screw hole, and a round rod penetrating the through hole.

9. The low power consumption electronic lock according to claim 1, characterized in that: The limiting rib abuts against the end surface of the motor.

10. The low power consumption electronic lock according to claim 1, characterized in that: The locking member is a steel ball.

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