CN211736720U

CN211736720U - Automatic telescoping device of trick lock

Info

Publication number: CN211736720U
Application number: CN201922262578.5U
Authority: CN
Inventors: 石庆东
Original assignee: Ningbo Zhian Electronics Co ltd
Current assignee: Ningbo Zhian Electronics Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-23
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses an automatic expansion device of a coded lock, wherein a lock shell is cylindrical, a knob which is cylindrical is buckled in the lock shell, an inner sleeve and an outer sleeve which are mutually matched are arranged in a cavity formed by the knob and the lock shell, a motor is arranged in the cavity of the inner sleeve, and the motor is in threaded connection with the knob through a screw rod; when the motor rotates, the knob is driven by the screw to extend out of the lock shell; when the knob rotates, the outer sleeve and the inner sleeve drive the gland to rotate; when the knob rotates reversely, the motor rotates reversely to drive the knob to retract into the lock shell through the screw rod. The utility model discloses effectively solved current lock knob always outside or press the manual of lock to press and press the switch lock and its problem of bumping the hand easily, had very high practical value.

Description

Automatic telescoping device of trick lock

Technical Field

The utility model belongs to the technical field of the tool to lock technique and specifically relates to an automatic telescoping device of trick lock is related to.

Background

The structure of the conventional door lock is as follows: the round knob is always outside, or a pressing structure is adopted, and the round knob is pressed to pop out and then pressed into. For example, chinese patent publication No. CN2446232, published 2001, 09/05, entitled apparatus cabinet door lock, discloses that when locking a door, a knob is rotated, and a locking rod drives a pin to rotate in a keyhole member having two B-shaped holes, so that the door can be automatically lifted up when locking the door, and the lifting state of the door is always maintained, thereby avoiding the door lifting action when locking the door, and effectively preventing the door from tilting. The disadvantage is that the rotary knob of the lock is always on the outside. For another example, the name of the invention creation is an invisible door lock, which is disclosed in chinese patent publication No. CN102383650B, published 2013, 09 and 11, and the application discloses a door lock comprising a lock body and an unlocking assembly fixedly mounted on a door leaf, and a fastening seat fixedly mounted on a door frame; the unlocking assembly comprises a check ring, a part of the check ring is hollow, a pressing piece is pivoted on the check ring, the pivot of the pressing piece is parallel to the plane of the door leaf, and the pressing piece can rotate around the pivot and partially extend into the hollow part of the check ring; the lock body is provided with a connecting piece, one end of which extends into the retainer ring and is matched with the pressing piece. The disadvantages of the lock are that firstly, the knob of the lock is pressed to pop out or press back after being pressed by hand, secondly, the knob of the lock is pressed to be rectangular, one end of the rectangular knob pops out after being unlocked, the door is at a certain angle, the popping part is used as a handle, at the moment, the rectangular groove left after one end of the rectangular knob pops out is provided with a 90-degree angle, the groove edge is in a scissor form with the corresponding rectangular knob edge, when one end of the rectangular knob is held by a hand to rotate, the finger joint has a certain probability to touch the groove edge of the groove, and according to the force analysis of the lever principle, when one end of the rectangular knob pops out, the angle presented by the door is smaller, the power arm is longer when the knob rotates in the plane of the door, the force transmitted by the hand is smaller, the lock is easier to be opened and closed, the finger joint is more easy to touch the groove, the hand is more vulnerable to bruising.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that current lock knob is always outside or press the manual of lock to press down and operate switch lock and easily bump the hand, provide an automatic telescoping device, when password input is correct, the lock knob is automatic to be stretched out, and the lock knob is then automatic withdrawal after the door is closed, can effectively solve the problem that prior art exists.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: an automatic telescopic device of a coded lock is characterized in that a lock shell is cylindrical, a cylindrical knob is buckled in the lock shell, an inner sleeve and an outer sleeve which are matched with each other are arranged in a cavity formed by the knob and the lock shell, a disc is arranged at the rear end of the inner sleeve, a limiting flange is arranged at the outer edge of one side, close to the inner sleeve, of the disc, a touch switch is arranged on the limiting flange, the front end of the outer sleeve is fixedly connected with the knob, a motor is arranged in a cavity of the inner sleeve and is in threaded connection with the knob through a screw rod, a round hole is formed in the bottom of the lock shell and is matched with the disc; when the motor rotates, the knob is driven by the screw to extend out of the lock shell; when the knob rotates, the outer sleeve and the inner sleeve drive the gland to rotate; when the knob rotates to the touch switch for triggering, the motor rotates reversely and drives the knob to retract into the lock shell through the screw rod. The utility model adopts the motor to drive the knob to realize extension, when the input password is correct, the motor rotates to push the knob to extend out of the lock shell through the screw rod, the knob is convenient to rotate, and the outer sleeve and the inner sleeve drive the gland to rotate to complete the door opening action when the knob rotates; after the door is closed, the door is locked through the reverse rotation of the knob, the touch switch is triggered when the knob is in place in the reverse rotation, and the motor drives the knob to retract into the lock shell through the screw rod in the reverse rotation. Therefore, the utility model provides a prior art's lock knob outside or press the manual press operation switch lock of lock to bump the problem of hand easily always.

Preferably, the outer end part of the outer sleeve is provided with an end plate, the outer sleeve is fixedly connected with the bottom of the knob through the end plate, the shape of the cross section of the inner sleeve and the cross section of the cavity of the outer sleeve are waist-circular, and a circumferential rotation-preventing structure is formed between the inner sleeve and the outer sleeve. Therefore, the outer sleeve can only slide along the axial direction of the inner sleeve, and when the knob rotates, the outer sleeve drives the inner sleeve and the gland to rotate synchronously in the circumferential direction.

Preferably, a connecting piece is arranged between the motor and the knob, the motor is a screw rod type direct current speed reducing motor, the connecting piece comprises a flat plate, a connecting column perpendicular to the flat plate is arranged on the flat plate, a screw hole is formed in the connecting column, the connecting column is in threaded connection with an output screw rod of the motor through the screw hole, and the flat plate is fixed to the bottom of the knob. The motor rotates the axial force for transmission in the process of extending or retracting the connecting piece through the screw bolt; the surface contact of the connecting piece plate stably transmits force to the knob, so that the knob stably extends or retracts in the axial direction, the force output by the screw rod of the linear motor is prevented from being transmitted to the knob to form point contact, the central point of the screw rod is contacted with the central line of the eccentric knob to generate moment, and the knob is prevented from being blocked when axially extending or retracting.

Preferably, the outer diameter of the limit flange is larger than the diameter of the circular hole, and the rear side edge of the limit flange abuts against the bottom of the lock housing to prevent the inner sleeve from moving backwards.

Preferably, the center of the top of the gland is provided with a connecting block, the connecting block is fixedly connected with the shifting piece, the shifting piece is provided with a pin, and the shifting piece and the pin are driven to rotate to open and close the box door when the gland rotates.

Preferably, an outward turning round sleeve is formed at the round hole of the lock shell, the outward turning round sleeve is sleeved on the outer side of the disc, and a limiting flange on the disc and the outer edge of the gland are clamped at two ends of the outward turning round sleeve to form an axial limiting structure. The design makes the contact surface between the outer edge of the disc and the inner wall of the eversion circular sleeve enlarged, and when the disc rotates, local abrasion deformation caused by stress concentration is prevented. Meanwhile, the gland bush and the inner sleeve can rotate in the circumferential direction but cannot move in the axial direction.

Preferably, the knob is provided with a handle, the handle is arranged in a cylinder arranged on the knob, the handle is cylindrical, the outer end of the handle is provided with a pulling plate, the inner end of the handle is provided with a baffle ring, the diameter of the baffle ring is larger than that of the handle, the baffle ring is in threaded connection with the handle, the handle is sleeved with a spring, one end of the spring is abutted against the knob, and the other end of the spring is abutted against the baffle ring. When the motor is in power failure or fails to rotate, the knob can be directly rotated by pulling out the handle, and the door opening and closing actions are completed; after the knob is rotated, the handle is released, and the handle can be automatically retracted under the action of the spring.

The utility model has the advantages that: the utility model discloses when password input is correct, the lock knob is automatic to be stretched out, can rotate the operation to the knob, and the lock knob is automatic withdrawal then after the door is closed, and the lock knob that can effectively solve the prior art existence is always outside or press the manual problem of pressing down the switch lock and bumping the hand easily, has very high practical value.

Drawings

Fig. 1 is a schematic view of an overall structure of the automatic retractable device of the combination lock of the present invention;

fig. 2 is a schematic structural view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a schematic view of an internal structure of the present invention;

figure 5 is a schematic view of the outer sleeve of the present invention in a retracted configuration;

fig. 6 is a schematic view of the outer sleeve of the present invention in an extended configuration.

In the figure: 1. a pin; 2. a chute; 3. moving the paddle component; 4. a shifting sheet; 5. a gland; 6. a disc; 7. turning the round sleeve outwards; 8. the bottom of the lock shell; 9. a motor; 10. a screw; 11. an inner sleeve; 12. an outer sleeve; 13. a knob; 14. a lock housing; 15. a connecting member; 16. an end plate; 17. the bottom of the knob; 18. connecting blocks; 19. the top of the gland; 20. a circular hole; 21. a limiting flange; 22. a baffle ring; 23. a handle; 24. a spring; 25. pulling a plate; 26. a cylinder; 27. touching the switch.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1, 2 and 3, an automatic retractable device of a coded lock, a lock shell 14 is cylindrical, a knob 13 which is cylindrical is buckled in the lock shell, an inner sleeve 11 and an outer sleeve 12 (see fig. 5 and 6) which are mutually matched are arranged in a cavity formed by the knob and the lock shell, a disc 6 is arranged at the rear end part of the inner sleeve, a round hole 20 is arranged at the bottom 8 of the lock shell, a limit flange 21 is arranged at the outer edge of one side, close to the inner sleeve, of the round hole and the disc matched disc, the outer edge of the round hole and the outer edge of the disc matched with the inner sleeve, the outer diameter of the limit flange is larger than the diameter of the round hole, the rear side edge of the limit flange is abutted against the bottom 8 of the lock shell to prevent the inner sleeve from moving backwards, a touch switch 27 is arranged on the limit flange, the front end part, a connecting piece 15 is arranged between the motor and the knob, the connecting piece comprises a flat plate, a connecting column perpendicular to the flat plate is arranged on the flat plate, a screw hole is formed in the connecting column, the connecting column is in threaded connection with an output screw rod of the motor through the screw hole, and the flat plate is fixed at the bottom 17 of the knob. The disc is buckled with a gland 5, the center of the top 19 of the gland is provided with a connecting block 18, the connecting block is fixedly connected with a shifting piece 4, and the shifting piece is provided with a pin 1; when the motor rotates, the knob is driven by the screw to extend out of the lock shell; when the knob rotates, the outer sleeve and the inner sleeve drive the gland to rotate, when the gland rotates, the shifting sheet and the pin are driven to rotate, and the pin drives the movable shifting sheet component 3 to move through the sliding groove 2 for opening and closing the box door; when the knob is rotated to the touch switch 27 for triggering, the motor rotates reversely to drive the knob to retract into the lock shell through the screw rod.

The outer end of the outer sleeve is provided with an end plate 16, the outer sleeve is fixedly connected with the bottom of the knob through the end plate, the shape of the cross section of the inner sleeve and the cross section of the cavity of the outer sleeve are waist-circular, and a circumferential anti-rotation structure is formed between the inner sleeve and the outer sleeve. An outward turning round sleeve 7 is formed at the round hole of the lock shell, the outward turning round sleeve is sleeved on the outer side of the disc, and a limiting flange on the disc and the outer edge of the gland are clamped at two ends of the outward turning round sleeve to form an axial limiting structure.

The knob of this embodiment is provided with handle 23 (see fig. 4 and 5), the handle is arranged in cylinder 26 arranged on the knob, the handle is cylindrical, the outer end of the handle is provided with pulling plate 25, the inner end of the handle is provided with baffle ring 22, the diameter of the baffle ring is larger than that of the handle, the baffle ring is in threaded connection with the handle, the handle is sleeved with spring 24, one end of the spring is abutted to the knob, and the other end is abutted to the baffle ring.

The utility model adopts the motor to drive the knob to realize extension, when the input password is correct, the motor rotates to push the knob to extend out of the lock shell through the screw rod, the knob is convenient to rotate, and the outer sleeve and the inner sleeve drive the gland to rotate to complete the door opening action when the knob rotates; after the door is closed, the door is locked through the reverse rotation of the knob, the touch switch is triggered when the knob is in place in the reverse rotation, and the motor drives the knob to retract into the lock shell through the screw rod in the reverse rotation. Therefore, the utility model provides a prior art's lock knob outside or press the manual press operation switch lock of lock to bump the problem of hand easily always.

It should be noted that the above-mentioned embodiment is only a preferable embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims

1. An automatic telescopic device of a coded lock is characterized in that a lock shell (14) is cylindrical, a cylindrical knob (13) is buckled in the lock shell, an inner sleeve (11) and an outer sleeve (12) which are mutually matched are arranged in a cavity formed by the knob and the lock shell, a disc (6) is arranged at the rear end of the inner sleeve, a limit flange (21) is arranged at the outer edge of one side, close to the inner sleeve, of the disc, a touch switch (27) is arranged on the limit flange, the front end of the outer sleeve is fixedly connected with the knob, a motor (9) is arranged in a cavity of the inner sleeve, the motor is in threaded connection with the knob through a screw (10), a round hole (20) is arranged at the bottom (8) of the lock shell, the round hole is matched; when the motor rotates, the knob is driven by the screw to extend out of the lock shell; when the knob rotates, the outer sleeve and the inner sleeve drive the gland to rotate; when the knob rotates to the touch switch (27) to be triggered, the motor rotates reversely and drives the knob to retract into the lock shell through the screw rod.

2. The automatic telescoping device of the coded lock according to claim 1, wherein the outer end of the outer sleeve is provided with an end plate (16), the outer sleeve is fixedly connected with the bottom of the knob through the end plate, the cross section of the inner sleeve and the cross section of the cavity of the outer sleeve are waist-circular, and a circumferential rotation preventing structure is formed between the inner sleeve and the outer sleeve.

3. The automatic retractable device of a combination lock according to claim 1, wherein a connecting member (15) is provided between the motor and the knob, the motor is a screw type direct current speed reduction motor, the connecting member comprises a flat plate, a connecting column perpendicular to the flat plate is provided on the flat plate, a screw hole is provided on the connecting column, the connecting column is in threaded connection with an output screw of the motor through the screw hole, and the flat plate is fixed on the bottom (17) of the knob.

4. An automatic retraction device for a combination lock according to claim 1, wherein the outer diameter of the position-defining flange is greater than the diameter of the circular aperture and the rear side of the position-defining flange abuts the bottom (8) of the lock housing to prevent rearward movement of the inner sleeve.

5. The automatic retractable device of a coded lock as claimed in claim 1, wherein a connecting block (18) is arranged in the center of the top (19) of the gland, the connecting block is fixedly connected with a shifting piece (4), a pin (1) is arranged on the shifting piece, and when the gland rotates, the shifting piece and the pin are driven to rotate to open and close the box door.

6. The automatic telescopic device of the coded lock as claimed in claim 1, wherein an outward turning round sleeve (7) is formed at the round hole of the lock shell, the outward turning round sleeve is sleeved on the outer side of the disc, and a limit flange on the disc and the outer edge of the gland are clamped at two ends of the outward turning round sleeve to form an axial limit structure.

7. The automatic telescoping device of the coded lock according to any one of claims 1-6, characterized in that a handle (23) is arranged on the knob, the handle is arranged in a cylinder (26) arranged on the knob, the handle is cylindrical, a pulling plate (25) is arranged at the outer end of the handle, a baffle ring (22) is arranged at the inner end of the handle, the diameter of the baffle ring is larger than that of the handle, the baffle ring is in threaded connection with the handle, a spring (24) is sleeved on the handle, one end of the spring is abutted against the knob, and the other end of the spring is abutted against the baffle ring.