CN201786089U - Lock and alarm device thereof - Google Patents

Abstract

The utility model discloses a lock, including lock box, tapered end, set bar and transmission, the tapered end is installed on the lock box, and transmission is connected with tapered end and set bar transmission, and the tapered end further includes first tapered end that the knob was opened and second tapered end and drive mechanism that the key was opened, still discloses an alarm device, realizes through set up micro-gap switch and bee calling organ on the basis of above-mentioned lock, the utility model has the advantages of each other open the rate low, the security is high, and the theftproof is effectual.

Description

A lock and its alarm device

technical field

The utility model relates to a lock and an alarm device thereof. the

Background technique

Traditional locks are generally equipped with lock cylinders on both sides, and the inside and outside need to be opened with a key, so that if the person who is locked in the room cannot open the door without a key, this is easy to happen in the event of a dangerous situation such as fire. The danger of not being able to open the door without the key. the

At the same time, if lock cylinders are installed on both sides, the two lock cylinders will share pin resources. In this way, under the premise of mass production, the mutual opening rate of the lock will inevitably increase. Generally, if the lock cylinders are installed on both sides, the mutual opening rate will increase. up to 1%. the

Contents of the invention

The first purpose of the utility model is to provide a lock with reasonable structure, low mutual opening rate and high security. the

The second purpose of the present utility model is to provide an alarm device for a lock, which can realize sound alarm when the lock is opened illegally or the door is pried open. the

First purpose of this utility model is achieved in that:

A kind of lock, comprises lock box, lock head, lock bolt and transmission device, described lock head is installed on the lock box, and described transmission device is connected with described lock head and lock bolt transmission, and described lock head It further includes a first lock head and a second lock head, the first lock head includes a knob and an anti-lock button arranged on the knob, a lock core is installed in the second lock head, and the transmission device further includes a first A ratchet, the first ratchet shaft is connected to the knob, the first ratchet drives the lock bolt to move, and the transmission device also includes a second ratchet, the second ratchet shaft is connected to the second lock head, so The first ratchet can be axially displaced under the control of the anti-lock button, and the cooperation relationship between the first ratchet and the second ratchet is controlled by the anti-lock button. the

Since the first lock head adopts the knob structure, it is only necessary to turn the knob indoors to open the lock bolt through the first gear, and at the same time, the first ratchet can be axially displaced through the anti-lock button to disengage the first ratchet from the lock of the second ratchet. Engagement relationship, therefore, the door cannot be opened through the first lock head outside the door, and escape can be performed in time when danger occurs indoors, which has the beneficial effects of reasonable structure and high safety. the

The above-mentioned transmission device is arranged in the lock box, and a wedge-shaped projection is arranged on one side of the inner wall of the lock box, and the projection is arranged between the maximum radius and the minimum radius of the first ratchet. The axial distance of the ratchet is smaller than the axial stroke of the first ratchet, the first ratchet is in rotation with the protrusion, and the protrusion pushes the first ratchet to generate an axial displacement, and then forms a joint with the second ratchet. Mesh relationship. the

The purpose of setting the wedge-shaped projection is to rotate the knob when the anti-lock button is pressed, and the wedge-shaped projection can push the first ratchet back to its original position, and regain the engagement relationship with the second ratchet. the

The above-mentioned lock bolt includes a first telescopic plate and a second telescopic plate, and the transmission device further includes a first shift fork and a second shift fork linked with the first ratchet and the second ratchet. A shift fork and a second shift fork respectively drive the first expansion plate and the second expansion plate to move in opposite directions. the

The second purpose of the utility model is achieved in that:

An alarm device, including the above-mentioned lock, and also includes a first micro switch and a buzzer, the buzzer is controlled by the first micro switch, and the micro switch is set on the lock cylinder and is turned on by the insertion of the key, the buzzer is set to work at intervals after the micro switch is turned on. the

The micro switch can be opened by the insertion of a key or other unlocking devices, and the micro switch controls the buzzer to send out an alarm sound to achieve the purpose of anti-theft. the

The above-mentioned buzzer is set to work three seconds after the micro switch is turned on. the

The normal unlocking time generally does not exceed three seconds. Therefore, when the key is inserted for more than three seconds and the door is not opened, the buzzer will sound an alarm. the

The above-mentioned alarm device also includes an anti-prying mechanism, which includes a push rod and a return spring of the push rod, and also includes a second micro switch controlled by the push rod, and the push rod is arranged on the edge of the door position, when the door is in the closed state, the push rod triggers the second micro switch. the

The above-mentioned lock box is provided with a third micro switch, and the third micro switch is controlled by the lock bolt. the

The purpose of setting the third micro switch is to realize the linkage with the second micro switch. The principle is: when the lock is opened normally, the third micro switch is in the closed state, and no alarm will be given even if the second micro switch is opened. and when the lock is in the locked state, the third microswitch is opened, if the second microswitch is opened at this moment, it can be judged to be the behavior of prying the door, and the buzzer reports to the police. the

Description of drawings

Fig. 1 is the structural representation of the present embodiment;

Fig. 2 is the structural representation of another angle of the present embodiment;

Fig. 3 is a schematic diagram of the external structure of the utility model;

Fig. 4 is a structural schematic diagram of the alarm device of the present invention. the

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific examples of implementation, but it is not intended to limit the technical solution of the utility model. the

This embodiment comprises a lock box 1, a lock head, a lock bolt and a transmission device, the lock head is installed on the lock box 1, the transmission device is connected with the lock head and the lock bolt transmission, and the lock head further includes a first lock head 2-1 and a first lock head 2-1. Two lock heads 2-2, the first lock head 2-1 includes a knob 2-1-1 and an anti-lock button 2-1-2 located on the knob 2-1-1, the second lock head 2-1 2 is installed with a lock cylinder 2-2-1, the transmission device further includes a first ratchet 3-1, the first ratchet 3-1 is pivoted to the knob 2-1-1, and the first ratchet 3-1 drives the lock Bolt movement, the transmission device also includes a second ratchet 3-2, the second ratchet 3-2 is pivoted to the second lock head 2-2, and the first ratchet 3-1 can be locked under the control of the anti-lock button 2-1-2 Axial displacement, the matching relationship between the first ratchet 3-1 and the second ratchet 3-2 is controlled by the anti-lock button 2-1-2, that is, when the anti-lock button 2-1-2 is in the natural state, the first ratchet 3 -1 is engaged with the second ratchet 3-2, and when the anti-lock button 2-1-2 is pressed, the first ratchet 3-1 and the second ratchet 3-2 have no meshing relationship. the

Because the first lock head 2-1 adopts the knob structure, it is only necessary to rotate the knob 2-1-1 in the room to open the lock bolt through the first gear 3-1, and at the same time, the second gear can be locked by the anti-lock button 2-1-2. The axial displacement of a ratchet 3-1 makes the first ratchet 3-1 disengage from the meshing relationship with the second ratchet 3-2. Therefore, the door cannot be opened through the first lock head 2-1 outside the door, and a dangerous accident occurs indoors. The utility model can escape in time under certain circumstances, and has the beneficial effects of reasonable structure and high safety. the

The transmission device of this embodiment is arranged in the lock box 1, and a wedge-shaped protrusion (not shown in the figure) is arranged on one side of the inner wall of the lock box 1, and the protrusion is set at the maximum radius of the first ratchet 3-1 and Between the minimum radius, the axial distance between the protrusion and the first ratchet 3-1 is less than the axial stroke of the first ratchet 3-1, the first ratchet 3-1 and the protrusion are rotatably engaged, and the protrusion The block pushes the first ratchet 3-1 to produce an axial displacement, and then forms a meshing relationship with the second ratchet 3-2. the

The purpose of setting the wedge-shaped projection is to rotate the knob 2-1-1 when the anti-lock button 2-1-2 is pressed, and the wedge-shaped projection can push the first ratchet 3-1 back to its original position, and obtain and second ratchet again. 3-2 meshing relationship. the

The lock bolt in this embodiment includes a first telescopic plate 4-1 and a second telescopic plate 4-2, and the transmission device also includes a first shift fork linked with the first ratchet 2-1 and the second ratchet 2-2. 9-1 and the second shift fork 9-2, the first shift fork 9-1 and the second shift fork 9-2 respectively drive the first telescopic plate 4-1 and the second telescopic plate 4-2 in opposite directions sports. the

The alarm device of this embodiment includes the above-mentioned lock, and also includes a first microswitch 5-1 and a buzzer 6, and the buzzer 6 is controlled by the first microswitch 5-1, and the first microswitch 5-1 1 is located at the lock cylinder 2-2-1, and is opened by the insertion of the key, and the buzzer 6 is set to work at intervals after the first microswitch 5-1 is opened. the

The first micro switch 5-1 can be opened by the insertion of a key or other unlocking device, and the first micro switch 5-1 controls the buzzer 6 to send out an alarm sound to realize the purpose of anti-theft. the

The buzzer 6 of the present embodiment is set to work three seconds after the micro switch is turned on. the

The time of normal unlocking is generally no more than three seconds, therefore, when the key is inserted and the door has not been opened for more than three seconds, the buzzer 6 will send an alarm sound. the

The alarm device of this embodiment also includes a tamper-resistant mechanism, which includes a push rod 7 and a return spring 8 of the push rod 7, and also includes a second microswitch 5-2 controlled by the push rod 7 , the push rod 7 is arranged at the edge position of the door, and when the door is in the closed state, the push rod 7 triggers the second micro switch 5-2. the

The lock box 1 of this embodiment is provided with a third microswitch 5-3, and the third microswitch 5-3 is controlled by the lock bolt. the

The purpose of setting the third microswitch 5-3 is to realize the linkage with the second microswitch 5-2. The principle is: when the lock is normally opened, the third microswitch 5-3 is in the off state, Two microswitches 5-2 are opened and do not report to the police; And when the lock is in locked state, the 3rd microswitch 5-3 is opened, if the second microswitch 5-2 is opened this moment, can be judged as yes When the door is broken, the buzzer will alarm. the

It should be noted that the above-mentioned embodiment is only a preferred implementation mode, but the implementation mode is not limited only by the above-mentioned embodiment, and any other changes, substitutions, combinations or simplifications that do not deviate from the innovative point of this solution are all Replacement methods that should be regarded as equivalent are all included in the scope of protection. the

Claims (7)

1. lock, comprise lock box, tapered end, locking bolt and transmission device, described tapered end is installed on the lock box, described transmission device and described tapered end and locking bolt are in transmission connection, it is characterized in that: described tapered end further comprises first tapered end and second tapered end, this first tapered end comprises a knob and the button of being located on this knob of locking, in this second tapered end lock core is installed, described transmission device further comprises first ratchet, this first ratchet shaft is received on the described knob, this first ratchet drives described locking bolt motion, transmission device also comprises second ratchet, this second ratchet shaft is received described second tapered end, but the axial displacement under described control of locking button of described first ratchet, and the matching relationship of described first ratchet and second ratchet is controlled by the described button of locking.

2. a kind of lock according to claim 1, it is characterized in that: described transmission device is located in the lock box, one side inwall of this lock box is provided with a wedge shaped projection, this projection is located between the maximum radius and least radius of described first ratchet, the axial distance of this projection and this first ratchet is less than the axial stroke of described first ratchet, this first ratchet and the rotation of this projection cooperate, and this first ratchet of this projection ejection produces axial displacement, and then produce meshing relation with described second ratchet.

3. a kind of lock according to claim 1 and 2, it is characterized in that: described locking bolt comprises first expansion plate and second expansion plate, described transmission device comprises also and first shift fork and second shift fork of described first ratchet and described second ratchet gearing that this first shift fork and second shift fork drive this first expansion plate respectively and second expansion plate moves in the opposite direction.

4. warning device, comprise lock according to claim 3, it is characterized in that: also comprise first microswitch and buzzer, described buzzer is controlled by described first microswitch, described microswitch is located at the lock core place, and opened by the insertion of key, described buzzer is set to this microswitch and opens back certain hour work at interval.

5. a kind of warning device according to claim 4 is characterized in that: described buzzer is set to microswitch and opens work in back 3 seconds.

6. a kind of warning device according to claim 4, it is characterized in that: described anti-theft device also comprises a pick-proof mechanism, this pick-proof mechanism comprises the back-moving spring of a push rod and this push rod, also comprise second microswitch that is controlled by this push rod, this push rod is located at the marginal position of door, when door was in closed condition, this push rod triggered this second microswitch.

7. according to each described a kind of warning device of claim 5-6, it is characterized in that: be provided with the 3rd microswitch in the described lock box, the 3rd microswitch is controlled by described locking bolt.

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