CN211303438U - Door lock device for door cover self-locking protection - Google Patents
Door lock device for door cover self-locking protection Download PDFInfo
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- CN211303438U CN211303438U CN201922209784.XU CN201922209784U CN211303438U CN 211303438 U CN211303438 U CN 211303438U CN 201922209784 U CN201922209784 U CN 201922209784U CN 211303438 U CN211303438 U CN 211303438U
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- pawl
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Abstract
The utility model discloses a door lock device for door cover self-locking protection, which comprises a lock hook with a lock hole, a lock body and a control circuit, wherein the lock body comprises a lock bracket, a lock wheel and a pawl which are hinged on the lock bracket and are linked with each other, and a speed reducing motor arranged on the lock bracket; the lock wheel is provided with a jaw-shaped part which corresponds to the lock hook and comprises an upper jaw and a lower jaw, and a groove part which is matched with the ratchet on the pawl, and when the lock wheel rotates, the upper jaw can extend into the lock hole of the lock hook to hook the lock hook; the output shaft of the speed reducing motor is provided with a fin and an eccentric wheel matched with the pawl; the control circuit comprises a first switch matched with a lower jaw of the lock wheel and used for detecting the position of the lock wheel, a second switch matched with the fin and used for detecting the position of the eccentric wheel, and a main control panel microprocessor electrically connected with the speed reducing motor, the first switch and the second switch. The utility model has the advantages of high automation degree, high reliability and high safety.
Description
Technical Field
The utility model belongs to instrument locks, concretely relates to a locks for door closure auto-lock protection.
Background
Some instruments and equipment with a door cover structure generally need to be provided with a door locking device to ensure the safety of the equipment in operation. The general technical conditions of GB/T30099-2013 laboratory centrifuges stipulate that the centrifuges have a door cover self-locking function. The door lock of the original manual control switch of the centrifuge has been replaced by the door lock of the electric control switch, and higher requirements are placed on the miniaturization of the door lock device, and the comfort, the reliability and the safety of the operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a degree of automation is higher, reliability and the better door lock device who is used for door closure auto-lock protection of security.
Realize the utility model discloses the technical scheme that the purpose was adopted as follows:
the utility model provides a door lock device for door cover self-locking protection, including latch hook, lock body and the control circuit who is equipped with the lockhole, the lock body includes the lock support, articulate lock wheel and the pawl that link each other on the lock support, establish gear motor on the lock support; the lock wheel is provided with a jaw-shaped part which corresponds to the lock hook and comprises an upper jaw and a lower jaw, and a groove part which is matched with the ratchet on the pawl, and when the lock wheel rotates, the upper jaw can extend into the lock hole of the lock hook to hook the lock hook; the output shaft of the speed reducing motor is provided with a fin and an eccentric wheel matched with the pawl; the control circuit comprises a first switch matched with a lower jaw of the lock wheel and used for detecting the position of the lock wheel, a second switch matched with the fin and used for detecting the position of the eccentric wheel, and a main control panel microprocessor electrically connected with the speed reducing motor, the first switch and the second switch.
The lock wheel is provided with a lock wheel, the lock wheel is provided with a lock hook, the lock wheel is provided with a lock wheel, and the lock wheel is provided with a lock hole.
The fin and the eccentric wheel are fixed into a whole.
The lock wheel and the pawl are mutually linked through a duplex energy storage torsion spring.
Advantageous effects
1. A set of speed reducing motor is adopted to drive the eccentric wheel to rotate and push the pawl so as to automatically open the door lock; the door cover self-locking protection is realized through the position detection of the first switch and the second switch and the judgment of the main control panel microprocessor. Compared with the door cover self-locking protection device which adopts an electromagnet or a tractor to draw a pawl to open the door lock and then uses a spring to automatically reset the electromagnet or the tractor in the prior art, the door cover self-locking protection device has the defects of simpler structure, more reliable control, comfortable operation, no impact noise when the electromagnet works and inaccurate resetting precision of the tractor.
2. The main control panel microprocessor can automatically identify the opening and closing state of the door lock by judging the on-off state of the first switch and the second switch, and prompts to execute a door closing or opening instruction; the user door lock state and fault information can be informed through modes such as sound, display and communication, the intelligent degree and the automation degree are higher, and the safety is better.
3. The utility model provides an eccentric wheel stop position does not influence the emergent function of opening the door, even control system breaks down, leads to the eccentric wheel optional position to stop, also can realize emergent opening the door. Compared with the prior art, the adaptability is wider, and the practicality is stronger.
The technical scheme of the utility model is further explained in the following with the attached drawings.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Referring to fig. 1, the door lock device for door cover self-locking protection provided by the present invention comprises a latch hook 1, a lock body 2 and a control circuit, wherein the latch hook 1 comprises a body 101 and a latch hole 102 formed on the body 101, the lock body 2 comprises a lock bracket 201, a lock wheel 202 and a pawl 204 hinged on the lock bracket 201 through a shaft pin 206, and a speed reduction motor 207 arranged on the lock bracket 201; an opening 201a corresponding to the lock hook 1 is formed in the lock bracket 201, a jaw-shaped portion including an upper jaw 202a and a lower jaw 202b and a groove portion 202d matched with a ratchet 204a on the pawl 204 are formed in the lock wheel 202 and located at the opening 201a of the lock bracket 201, and when the lock wheel 202 rotates clockwise, the upper jaw 202a can extend into the lock hole 102 of the lock hook 1 to hook the lock hook 1; the lock wheel 202 and the pawl 204 are mutually linked through a duplex energy storage torsion spring 203, and two ends of the energy storage torsion spring 203 are respectively buckled on a groove 202c of the lock wheel 202 and a groove 204b of the pawl 204; a fin 208 and an eccentric wheel 205 matched with the pawl 204 are arranged on an output shaft of the speed reducing motor 207, the fin 208 and the eccentric wheel 205 are fixed into a whole, the eccentric wheel 205 and the speed reducing motor 207 rotate synchronously, and an arc surface of the eccentric wheel 205 is contacted with a protruding part 204c of the pawl 204 to push the pawl 204 to rotate anticlockwise; the control circuit comprises a first photoelectric switch 3 which is matched with a lower jaw 202b of the lock wheel 202 to detect the position of the lock wheel 202, a second photoelectric switch 4 which is matched with the fin 208 to detect the position of the eccentric wheel 205, and a main control panel microprocessor which is electrically connected with the speed reducing motor 207, the first photoelectric switch 3 and the second photoelectric switch 4, and the control circuit provides power for the door lock device and identifies position control; the first photoelectric switch 3 and the second photoelectric switch 4 for position detection may also be micro switches, or may be position detection by hall-magnet steel detection or the like.
The working principle is as follows:
as shown in fig. 1, the latch hook 1 and the lock body 2 are respectively installed on the machine cover and the machine body, when the machine cover is closed, the latch hook 1 is inserted from the opening 201a of the lock bracket 201, and simultaneously the lower jaw 202b of the lock wheel 202 is pressed downwards to drive the lock wheel 202 to rotate clockwise, the lower jaw 202b cuts off the light beam of the first photoelectric switch 3, at this time, the lock wheel 202 drives the pawl 204 to rotate clockwise through the torsion action of the duplex energy storage torsion spring 203, the ratchet 204a on the pawl 204 automatically slides into the groove portion 202d of the lock wheel 202 to prevent the lock wheel 202 from reversing, the upper jaw 202a of the lock wheel 202 extends into the lock hole 102 of the latch hook 1 to hook the latch hook 1 to close the machine cover, and the main control board microprocessor receives the light beam cut-off signal of the first photoelectric switch 3. When an unlocking instruction is input, the speed reducing motor 207 drives the eccentric wheel 205 to rotate clockwise, when the eccentric wheel 205 rotates until the arc surface of the eccentric wheel 205 is contacted with the protrusion 204c of the pawl 204 and pushes the pawl 204 to rotate counterclockwise, the ratchet 204a on the pawl 204 leaves the groove portion 202d of the lock wheel 202, the lock wheel 202 is driven to rotate counterclockwise through the torsion action of the duplex energy storage torsion spring 203, the upper jaw 202a of the lock wheel 202 is withdrawn from the lock hole 102 of the lock hook 1, the lower jaw 202b is withdrawn to enable the light beam of the first photoelectric switch 3 to be conducted, and the upper lock hook 1 opens the cover. The eccentric wheel 205 continues to rotate, when the fin 208 on the eccentric wheel 205 cuts off the light beam of the second photoelectric switch 4, the microprocessor receives the turn-off signal of the second photoelectric switch 4, so that the speed reduction motor 207 stops, and the door lock is unlocked once.
Claims (4)
1. A door lock device for door cover self-locking protection is characterized by comprising a lock hook provided with a lock hole, a lock body and a control circuit, wherein the lock body comprises a lock bracket, a lock wheel and a pawl which are hinged on the lock bracket and are mutually linked, and a speed reducing motor arranged on the lock bracket; the lock wheel is provided with a jaw-shaped part which corresponds to the lock hook and comprises an upper jaw and a lower jaw, and a groove part which is matched with the ratchet on the pawl, and when the lock wheel rotates, the upper jaw can extend into the lock hole of the lock hook to hook the lock hook; the output shaft of the speed reducing motor is provided with a fin and an eccentric wheel matched with the pawl; the control circuit comprises a first switch matched with a lower jaw of the lock wheel and used for detecting the position of the lock wheel, a second switch matched with the fin and used for detecting the position of the eccentric wheel, and a main control panel microprocessor electrically connected with the speed reducing motor, the first switch and the second switch.
2. The door lock device according to claim 1, wherein the lock bracket has an opening corresponding to the lock hook, and the lock wheel has a jaw portion at the opening of the lock bracket.
3. The door lock device for door cover self-locking protection according to claim 1 or 2, wherein the fin is fixed integrally with the eccentric wheel.
4. The door lock device for door cover self-locking protection as claimed in claim 3, wherein the lock wheel and the pawl are linked with each other by a duplex energy-storing torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209784.XU CN211303438U (en) | 2019-12-11 | 2019-12-11 | Door lock device for door cover self-locking protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209784.XU CN211303438U (en) | 2019-12-11 | 2019-12-11 | Door lock device for door cover self-locking protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211303438U true CN211303438U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922209784.XU Active CN211303438U (en) | 2019-12-11 | 2019-12-11 | Door lock device for door cover self-locking protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN211303438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144964A (en) * | 2020-11-25 | 2020-12-29 | 恒银金融科技股份有限公司 | Linkage latch hook device |
-
2019
- 2019-12-11 CN CN201922209784.XU patent/CN211303438U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144964A (en) * | 2020-11-25 | 2020-12-29 | 恒银金融科技股份有限公司 | Linkage latch hook device |
| CN112144964B (en) * | 2020-11-25 | 2021-03-16 | 恒银金融科技股份有限公司 | Linkage latch hook device |
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