CN109681046B

CN109681046B - Safety lock with interlocking function

Info

Publication number: CN109681046B
Application number: CN201910091190.5A
Authority: CN
Inventors: 阙建章; 魏新荣; 王金平
Original assignee: Suzhou D Snap Technologies Co ltd
Current assignee: Suzhou D Snap Technologies Co ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2024-06-28
Anticipated expiration: 2039-01-30
Also published as: CN109681046A

Abstract

A safety lock with an interlocking function comprises a shell, a lock tongue, a gear and a rack; the shell is provided with a locking notch groove, and the lock pin enters the locking notch groove and is in locking fit with the lock tongue to achieve locking; the lock tongue horizontally slides in the shell, and keeps the trend of extending into the fore shaft groove through the elastic piece; the lock tongue is vertically provided with a matching hole for the rack to pass through; the rack vertically slides in the shell, and when the lock is locked, the rack upwards stretches into or passes through the matching hole to lock the lock tongue; the gear is rotationally assembled in the shell and meshed with the rack; the gear drives the rack to be inserted into or separated from the lock tongue through rotation; when unlocking, the rack is separated from the lock tongue, the lock pin is separated from the locking notch groove, and the lock tongue stretches into the locking notch groove under the action of the elastic piece; the matching holes of the lock tongue are staggered to match with the racks, the racks are abutted to the lower part of the lock tongue, and the gears cannot rotate. The invention has ingenious structural design, ensures the safety of electricity consumption and good locking reliability, realizes the linkage closing of the isolator in the unlocking process, realizes the linkage opening of the isolator in the locking process, and can meet the higher use requirement of users.

Description

Safety lock with interlocking function

Technical Field

The present invention relates to locks, and more particularly to a lock with electrical safety and reliable locking.

Background

Often, locks are used in electrical equipment to lock the doors of electrical cabinets. Because the electric cabinet relates to the electric safety problem, whether the use of the lockset can match the requirement of safety production and whether the locking of the lockset is reliable become important standards for measuring the quality of the lockset.

In the prior art, a common lock cannot meet the above standard for the following reasons: 1. in the unlocking state, the handle of the common lockset can normally rotate, and because the handle of part of the electrical cabinet can be linked with the isolator, potential safety hazards exist; 2. in the locking state, the anti-impact capability of the lockset is poor, the problem that the locking bolt is retracted to unlock by mistake due to vibration or external force can occur at probability, and the reliability is low; 3. the structural design is complex, and the stability in long-term use is poor; 4. the working state is few, only two states of locking and unlocking are adopted, and the higher requirements of users cannot be met.

Therefore, how to design a lock which is reliable in locking and convenient to use and is suitable for an electrical cabinet is a problem of the invention.

Disclosure of Invention

The invention aims to provide a safety lock with an interlocking function.

In order to achieve the above purpose, the invention adopts the following technical scheme:

A safety lock with an interlocking function; the lock comprises a shell, and a lock tongue, a gear and a rack which are arranged in the shell;

Wherein, the upper end of the shell is provided with a locking slot along the vertical direction for a lock pin to go in and out; the lock pin enters the locking notch groove along the vertical direction and is in locking fit with the lock tongue, so that the lock is in a locking state;

The lock tongue is arranged in the shell in a sliding way along the horizontal direction, the head of the lock tongue corresponds to the fore shaft groove, the lock tongue is in elastic fit with the shell through an elastic piece, and the elastic piece enables the head of the lock tongue to keep a movement trend of extending into the fore shaft groove;

Wherein, a matching hole is arranged on the lock tongue along the vertical direction for the rack to pass through; the rack is arranged in the shell in a sliding manner along the vertical direction, and the head of the rack is arranged corresponding to the matching hole on the lock tongue; in a locking state, the matching hole is aligned with the rack in the vertical direction, the head of the rack stretches into or passes through the matching hole upwards to lock the lock tongue in the horizontal direction, and the lock tongue stretches into the locking notch groove to be locked with the lock pin;

The gear is rotationally assembled in the shell and is meshed with the rack for transmission assembly; the gear drives the rack to move up and down through rotation, so that the lock tongue is inserted into or separated from the lock tongue;

In the unlocking state, the rack is separated from the matching hole of the lock tongue, the lock pin is separated from the fore shaft groove, and the lock tongue stretches into the fore shaft groove under the action of the elastic piece; because the abutting of the lock pin is lacking, the extending depth of the lock pin is larger than the extending depth in the locking state, so that the matching holes are staggered in the horizontal direction to be matched with the racks, the heads of the racks are abutted and positioned below the lock pin, and the gears cannot drive the racks to move upwards through rotation.

The relevant content explanation in the technical scheme is as follows:

1. In the scheme, the lock tongue further comprises a limiting pin, wherein the limiting pin is positioned in the shell and is arranged corresponding to the side part of the lock tongue and used for limiting the stroke of the horizontal displacement of the lock tongue; a limit groove is horizontally formed in the lock tongue or the shell corresponding to the limit pin, and the length of the limit groove determines the size of the displacement stroke of the lock tongue.

2. In the scheme, the axle center of the gear is coaxially positioned with the rotating shaft of the handle, and the handle is rotated to drive the gear to rotate.

3. In the scheme, the axle center of the gear is connected with a switch of an isolator, and the isolator is opened or closed through rotation of the gear.

4. In the above scheme, the shell is further provided with a yielding hole, and the yielding hole is arranged corresponding to the head of the rack; in the locking state, the head of the rack extends into and passes through the matching hole of the lock tongue and extends out of the upper part of the shell through the abdicating hole.

5. In the above scheme, the elastic piece is a spring and acts between the tail part of the lock tongue and the shell.

The working principle and the advantages of the invention are as follows:

The invention relates to a safety lockset with an interlocking function, which comprises a shell, a lock tongue, a gear and a rack; the shell is provided with a locking notch groove, and the lock pin enters the locking notch groove and is in locking fit with the lock tongue to achieve locking; the lock tongue horizontally slides in the shell, and keeps the trend of extending into the fore shaft groove through the elastic piece; the lock tongue is vertically provided with a matching hole for the rack to pass through; the rack vertically slides in the shell, and when the lock is locked, the rack upwards stretches into or passes through the matching hole to lock the lock tongue; the gear is rotationally assembled in the shell and meshed with the rack; the gear drives the rack to be inserted into or separated from the lock tongue through rotation; when unlocking, the rack is separated from the lock tongue, the lock pin is separated from the locking notch groove, and the lock tongue stretches into the locking notch groove under the action of the elastic piece; the matching holes of the lock bolts are staggered to match with the racks, the racks are abutted to the lower parts of the lock bolts, and the gears cannot rotate, so that interlocking is realized.

Compared with the prior art, the invention has ingenious structural design, can ensure that the isolator is in a closed state in an unlocking state, and ensures the electricity safety; the lock has high shock resistance and good reliability in a locking state; meanwhile, the isolator can be closed in a linkage manner in the unlocking process, so that the electrical safety is further ensured, and in addition, the isolator can be opened in a linkage manner in the locking process, so that the higher use requirement of a user can be met.

Drawings

FIG. 1 is a schematic view of the external structure of the embodiment of the present invention in a locked state;

FIG. 2 is a schematic view of the internal structure of the embodiment of the present invention in a locked state;

FIG. 3 is a schematic cross-sectional view of the embodiment of the present invention in a locked state;

FIG. 4 is a schematic diagram of an external structure during unlocking according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of an unlocking process according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an external structure of an embodiment of the present invention when unlocking is continued;

FIG. 7 is a schematic cross-sectional view of the embodiment of the present invention when the unlocking is continued;

FIG. 8 is a schematic cross-sectional view of an embodiment of the present invention in an unlocked state;

FIG. 9 is a reference diagram of the usage status of an embodiment of the present invention;

fig. 10 is a reference view of the cabinet door and the side plate of the embodiment of the invention in use.

In the above figures: 0. a lock; 1. a housing; 2. a bolt; 3. a gear; 4. a rack; 5. a locking notch groove; 6. a locking pin; 7. a cabinet door; 8. a cabinet body; 9. an elastic member; 10. a limiting pin; 11. a mating hole; 12. a handle; 13. a relief hole; 14. and a limit groove.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples:

Examples: referring to fig. 1 to 10, a safety lock 0 with an interlocking function includes a housing 1, and a lock tongue 2, a gear 3 and a rack 4 disposed in the housing 1.

Wherein, the upper end of the shell 1 is provided with a locking slot 5 along the vertical direction for a lock pin 6 to go in and out; the lock pin 6 enters the fore shaft groove 5 along the vertical direction and is in locking fit with the lock tongue 2, so that the lock 0 achieves a locking state; in practice, the lock pin 6 may be disposed on the cabinet door 7, and the lock 0 may be disposed on the cabinet body 8 (see fig. 9 and 10).

The lock tongue 2 is slidably disposed in the housing 1 along a horizontal direction, the head of the lock tongue 2 corresponds to the notch groove 5, and the lock tongue 2 is elastically matched with the housing 1 through an elastic member 9, the elastic member 9 may be a spring (or other elastic members with the same function), acting between the tail of the lock tongue 2 and the housing 1, and the elastic member 9 keeps the head of the lock tongue 2 in a movement trend of extending into the notch groove 5.

The lock further comprises a limiting pin 10, wherein the limiting pin 10 is positioned in the shell 1 and is arranged corresponding to the side part of the lock tongue 2, and is used for limiting the stroke of the horizontal displacement of the lock tongue 2; a limit groove 14 is horizontally arranged on the lock tongue 2 or the shell 1 corresponding to the limit pin, and the length of the limit groove 14 determines the displacement stroke of the lock tongue 2.

Wherein, a matching hole 11 is arranged on the lock tongue 2 along the vertical direction for the rack 4 to pass through, and the aperture of the matching hole 11 corresponds to the width of the rack 4; the rack 4 is arranged in the shell 1 in a sliding manner along the vertical direction, and the head of the rack 4 is arranged corresponding to the matching hole 11 on the lock tongue 2; in the locked state, the cabinet door 7 is closed, the matching hole 11 is aligned with the rack 4 in the vertical direction, the head of the rack 4 extends upwards into or passes through the matching hole 11, the lock tongue 2 is locked in the horizontal direction, and the lock tongue 2 extends into the locking notch groove 5 to be locked with the lock pin 6.

The gear 3 is rotatably assembled in the shell 1 and is arranged below the lock tongue 2 at intervals; and is meshed with the rack 4 for transmission assembly; the gear 3 drives the rack 4 to displace in the up-down direction through rotation, so that the lock tongue 2 is inserted into or separated from the rack.

In the unlocking state, the cabinet door 7 is opened, the rack 4 is separated from the matching hole 11 of the lock tongue 2, the lock pin 6 is separated from the fore shaft groove 5, and the lock tongue 2 stretches into the fore shaft groove 5 under the action of the elastic piece 9; because of lack of the abutment of the lock pin 6, the penetration depth of the lock tongue 2 is larger than the penetration depth in the locked state, so the matching hole 11 is staggered with the matching position of the rack 4 in the horizontal direction, at the moment, the head of the rack 4 is abutted and positioned below the lock tongue 2, and the gear 3 cannot drive the rack 4 to move upwards through rotation.

Wherein, the axle center of the gear 3 is coaxially positioned with the rotating shaft of a handle 12, and the handle 12 is rotated to drive the gear 3 to rotate. Besides the handle 12, a lock hole can be coaxially positioned on the gear 3, and the gear 3 can be rotated by inserting a key into the lock hole, so that the rotation mode of the driving gear 3 is various, and the driving gear 3 can be flexibly adjusted according to actual requirements by a person skilled in the art, so that the manual operation is not repeated.

Wherein the axis of the gear 3 is also connected with a switch of an isolator (not shown in the figure), and the isolator is opened or closed by the rotation of the gear 3. Therefore, the isolator is pre-closed to power off the circuit before the cabinet door 7 is opened, namely before the lockset 0 is unlocked, so that the safety of power utilization operation is ensured; meanwhile, after the cabinet door 7 is closed, namely after the lockset 0 is locked, the isolator is opened to electrify the circuit, so that the operation of a user is facilitated. The specific connection modes are various, can be mastered by a person skilled in the art and can be flexibly adjusted according to actual needs, so that the connection modes are not repeated.

Wherein, the shell 1 is also provided with a yielding hole 13, and the yielding hole 13 is arranged corresponding to the head of the rack 4; in the locked state, the head of the rack 4 extends into and through the matching hole 11 of the lock tongue 2 and extends out of the upper part of the shell 1 through the yielding hole 13. By means of the design, taking the example that the lock 0 is assembled on the cabinet body 8, a lock hole (not drawn in the figure) can be formed in the cabinet door 7 corresponding to the abdication hole 13, so that in the locking state, not only the lock pin 6 on the cabinet door 7 stretches into the locking notch groove 5 of the lock 0to be locked with the lock tongue 2, but also the rack 4 of the lock 0 can stretch into the lock hole on the cabinet door 7 to be locked, namely, the mutual locking of the cabinet door 7 and the cabinet body 8 is realized, and the double locking ensures the stability of the locking state.

The working principle of the invention is now described as follows:

As shown in fig. 1 to 3, in the locked state of the lock 0, the cabinet door 7 is closed (as shown in fig. 9 and 10), and the lock pin 6 extends downward into the fore shaft groove 5 and is in locking fit with the lock tongue 2 extending horizontally into the fore shaft groove 5. The matching hole 11 of the lock tongue 2 is aligned with the rack 4 in the vertical direction, the rack 4 stretches into and passes through the matching hole 11, the lock tongue 2 is positioned in the horizontal direction, and then stretches out of the abdicating hole 13 of the shell 1 upwards and stretches into the lock hole on the cabinet door 7 to achieve locking. In this state, the cabinet door 7 and the cabinet body 8 are locked to each other, and the isolator remains open, and the circuit is completed.

As shown in fig. 4 and 5, when the unlocking is to be performed, the handle 12 drives the gear 3 to rotate by an angle, such as 90 ° clockwise (the angle is not the only angle), so that the rack 4 retracts downwards by a distance, and the lock hole of the cabinet door 7 is disengaged and returns to the housing 1. Meanwhile, the isolator is closed along with the rotation linkage of the gear 3, so that a circuit is broken, at the moment, the rack 4 still penetrates through the matching hole 11 of the lock tongue 2, namely, the locking state of the lock tongue 2 and the lock pin 6 is still maintained, and the cabinet door 7 is still locked.

As shown in fig. 6 and 7, the gear 3 is driven by the handle 12 to rotate in the same direction for a certain angle, namely, the gear is rotated clockwise for 90 ° (the angle is not the only angle), so that the rack 4 is retracted to the lower part of the matching hole 11 in the lock tongue 2 completely, and the gear is disengaged from the lock tongue 2. At this time, the lock tongue 2 is in a relatively free state acted by the elastic piece 9, the acting force of the elastic piece 9 is weak to force the lock tongue 2 to lock the lock pin 6, the lock pin 6 leaves the fore shaft groove 5 under the action of external force, and at this time, the lock 0 enters an unlocking state; at the same time, as shown in fig. 8, since the lock pin 6 leaves the fore shaft groove 5, the front end of the lock tongue 2 does not abut against the lock pin 6 any more, and therefore, extends into the fore shaft groove 5, and therefore, the horizontal position of the mating hole 11 of the lock tongue 2 changes, and the mating position with the rack 4 is shifted. At this time, the lower side of the lock tongue 2 abuts against the head of the rack 4 in the vertical direction, the gear 3 cannot drive the rack 4 to move upwards through reverse rotation (anticlockwise), and interlocking is achieved, so that the unlocking state of the lock 0 is maintained, meanwhile, the opening of the isolator is blocked, and the breaking of a circuit is maintained.

When the door is locked, the cabinet door 7 is closed, so that the lock pin 6 enters the locking notch groove 5 and can overcome the acting force of the elastic piece 9 by impact to force the lock tongue 2 to retract, and further the matching hole 11 of the lock tongue 2 is aligned with the rack 4 again in the vertical direction. Then the gear 3 is driven to rotate in the opposite direction (anticlockwise) through the handle 12, so that the gear 3 drives the rack 4 to sequentially pass through the matching hole 11 of the lock tongue 2 and the abdication hole 13 of the shell 1, finally enter the lock hole on the cabinet door 7, realize the positioning of the lock tongue 2 and realize the mutual locking of the cabinet door 7 and the cabinet body 8 by matching the lock pin 6 with the locking of the lock tongue 2. At the same time, with the rotation of the gear wheel 3, the isolator opens again and the circuit is switched on again.

The invention can be applied to the impact lock and other mechanisms with locking function in practical implementation.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. A safety lock with an interlocking function; the method is characterized in that:

the lock comprises a shell, and a lock tongue, a gear and a rack which are arranged in the shell;

2. The lock according to claim 1, wherein: the limiting pin is positioned in the shell and is arranged corresponding to the side part of the lock tongue and used for limiting the stroke of the horizontal displacement of the lock tongue; a limit groove is horizontally formed in the lock tongue or the shell corresponding to the limit pin, and the length of the limit groove determines the size of the displacement stroke of the lock tongue.

3. The lock according to claim 1, wherein: the axle center of the gear is coaxially positioned with the rotating shaft of a handle, and the gear is driven to rotate by rotating the handle.

4. The lock according to claim 1, wherein: the axle center of the gear is connected with a switch of an isolator, and the isolator is opened or closed by the rotation of the gear.

5. The lock according to claim 1, wherein: the shell is also provided with a yielding hole which is arranged corresponding to the head part of the rack; in the locking state, the head of the rack extends into and passes through the matching hole of the lock tongue and extends out of the upper part of the shell through the abdicating hole.

6. The lock according to claim 1, wherein: the elastic piece is a spring and acts between the tail part of the lock tongue and the shell.