CN215419300U

CN215419300U - Locking mechanism

Info

Publication number: CN215419300U
Application number: CN202121844645.5U
Authority: CN
Inventors: 高元孟; 高晓泽; 左运田; 王验; 吕冬冬; 杨梦思
Original assignee: Yufeng Electric Co ltd
Current assignee: Yufeng Electric Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-04
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a locking mechanism with good stability and simple structure. The technical scheme adopted comprises the following steps: a bottom plate, a connecting shaft arranged at the front end of the bottom plate, a lock pin frame arranged at the rear end of the bottom plate, an upper crank arm and a lower crank arm which are coaxially arranged on the connecting shaft, a lock pin which is slidably arranged in the lock pin frame, and a handle which is hinged at the upper end of the lock pin frame, the lower end of the handle is connected with the lock pin, a lock groove matched with the lock pin is formed between the upper crank arm and the lower crank arm, a torsional spring is arranged on the connecting shaft, one end of the torsional spring is connected with the upper crank arm or the lower crank arm, the other end of the torsional spring is connected with the fixed column, the connecting shaft comprises a riveting part, a positioning part, a connecting part and a shaft sleeve arranged on the connecting part, the connecting portion is provided with an upper retainer ring corresponding to the upper end of the shaft sleeve and a lower retainer ring corresponding to the lower end of the shaft sleeve, the bottom of the shaft sleeve is provided with a middle retainer ring, and the riveting portion is riveted on the bottom plate.

Description

Locking mechanism

Technical Field

The utility model relates to a locking mechanism applied to a switch cabinet.

Background

The switch cabinet body is used for years in the electric power industry in China, the application range is more and more extensive, the valve mechanism is a component of a movable alternating current metal closed switch device and a control device, and is provided with two convertible positions, and in the opening position, the valve mechanism allows a moving contact of a movable component to be occluded with a charged static contact; in the closed position, it becomes part of the partition, covering the stationary contact. The shutter mechanism includes a locking mechanism, and the structure of the conventional locking mechanism includes: the handle comprises a bottom plate, a connecting shaft arranged at the front end of the bottom plate, a lock pin frame arranged at the rear end of the bottom plate, an upper crank arm and a lower crank arm which are coaxially arranged on the connecting shaft, a lock pin which is slidably arranged in the lock pin frame, and a handle which is hinged to the upper end of the lock pin frame, wherein the lower end of the handle is connected with the lock pin, a lock groove matched with the lock pin is jointly formed between the upper crank arm and the lower crank arm, a torsion spring is arranged on the connecting shaft, one end of the torsion spring is connected with the upper crank arm or the lower crank arm, and the other end of the torsion spring is connected with a fixed column. There are disadvantages in that: 1. the upper crank arm, the lower crank arm and the connecting shaft have large rotation resistance and are easy to loosen; 2. the lock pin frame and the bottom plate are fixed by screws, so that the lock pin frame is easy to loosen and has a complex structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a locking mechanism with good stability and simple structure.

In order to solve the above problems, the technical scheme adopted by the utility model comprises: the handle comprises a base plate, a connecting shaft arranged at the front end of the base plate, a lock pin frame arranged at the rear end of the base plate, an upper crank arm and a lower crank arm which are coaxially arranged on the connecting shaft, a lock pin arranged in the lock pin frame in a sliding manner, and a handle hinged to the upper end of the lock pin frame, wherein the lower end of the handle is connected with the lock pin, a lock groove matched with the lock pin is jointly formed between the upper crank arm and the lower crank arm, a torsion spring is arranged on the connecting shaft, one end of the torsion spring is connected with the upper crank arm or the lower crank arm, and the other end of the torsion spring is connected with a fixed column, and the handle is characterized in that: the connecting shaft comprises a riveting part, a positioning part and a connecting part and is arranged on a shaft sleeve on the connecting part, the connecting part corresponds to the upper end of the shaft sleeve and is provided with an upper retaining ring and a lower retaining ring corresponding to the lower end of the shaft sleeve, the bottom of the shaft sleeve is provided with a middle retaining ring, the riveting part is riveted on the bottom plate, the lower crank arm is arranged between the lower retaining ring and the shaft sleeve, the upper crank arm is arranged between the upper retaining ring and the shaft sleeve, and the torsional spring is arranged on the shaft sleeve.

The locking mechanism is characterized in that: the top of the connecting part is fixed with the upper retainer ring through the first clamp spring.

The locking mechanism is characterized in that: and the bottom of the shaft sleeve is fixed with the middle check ring through a second snap spring.

The locking mechanism is characterized in that: the lock pin frame with the integrative stamping forming of bottom plate rear end, just the lock pin frame includes first side and passes through second side, the third side that first side both ends bent and formed, be equipped with first spout on the first side, be equipped with the second spout on the second side, be equipped with the third spout on the third side, first spout and second spout intercommunication.

The locking mechanism is characterized in that: the bottom of the second side surface and the bottom of the third side surface are abutted against the surface of the bottom plate.

The locking mechanism is characterized in that: the integrated stamping forming of bottom plate front end has the lock post of "L" shape, be equipped with the lockhole between lock post and last turning arm, the lower turning arm respectively.

The locking mechanism is characterized in that: the fixing column and the rear end of the bottom plate are integrally formed in a stamping mode.

The locking mechanism of the utility model has the advantages that:

1. through the improvement of the structure of the connecting shaft and the arrangement of the shaft sleeve and the retaining ring structure, the rotation of the upper crank arm and the lower crank arm is very smooth, the wear resistance is good, and the looseness is not easy to occur;

2. the lock pin frame and the rear end of the bottom plate are integrally formed in a punching mode, so that the structure is simplified, the cost is reduced, the strength is greatly improved, and the problem of looseness is thoroughly solved.

Drawings

FIG. 1 is a schematic structural view of a locking mechanism of the present invention;

FIG. 2 is a cross-sectional view of the latching mechanism of the present invention;

FIG. 3 and FIG. 4 are schematic structural views of the bottom plate of the present invention at different angles;

fig. 5 is an exploded view of the connecting shaft of the present invention.

Detailed Description

Referring to fig. 1 to 5, the locking mechanism of the present invention includes a base plate 1, a connecting shaft 2 fixed at a front end of the base plate 1, a lock pin frame 3 fixed at a rear end of the base plate 1, an upper crank arm 4 and a lower crank arm 5 coaxially disposed on the connecting shaft 2, a lock pin 6 slidably disposed in the lock pin frame 3, and a handle 7 hinged at an upper end of the lock pin frame 3. The handle 7 is connected to the latch 6 at a lower end thereof, and the latch 6 is controlled to be extended and retracted by operating the handle 7. And a locking groove 8 matched with the lock pin 6 is formed between the upper crank arm 4 and the lower crank arm 5, and when the lock pin 6 is inserted into the locking groove 8, the upper crank arm 4 and the lower crank arm 5 are locked. The connecting shaft 2 is provided with a torsion spring 9, one end of the torsion spring 9 is connected with the upper crank arm 4 or the lower crank arm 5, and the other end of the torsion spring is connected with a fixed column 10, so that after unlocking is carried out, the upper crank arm 4 and the lower crank arm 5 can be automatically opened. The connecting shaft 2 includes a rivet portion 11, a positioning portion 12, a connecting portion 13, and a sleeve 14 provided on the connecting portion 13. The connecting part 13 is provided with an upper retainer ring 15 corresponding to the upper end of the shaft sleeve 14, and the connecting part 13 is provided with a lower retainer ring 16 corresponding to the lower end of the shaft sleeve 14. The bottom of the shaft sleeve 14 is provided with a middle retainer ring 17, and the riveting part 11 is riveted on the bottom plate 1. The lower crank arm 5 is disposed between the lower retainer ring 16 and the boss 14. The upper crank arm 4 is arranged between the upper retainer ring 15 and the shaft sleeve 14, and the torsion spring 9 is arranged on the shaft sleeve 14.

Preferably, the top of the connecting part 13 is fixed with an upper retainer ring 15 through a first clamp spring 18. The bottom of the shaft sleeve 14 is fixed with a middle retainer ring 17 through a second clamp spring 19. The first clamp spring 18 and the second clamp spring 19 are used for fixing the upper retainer ring 15 and the middle retainer ring 17 respectively.

Preferably, the latch holder 3 and the rear end of the base plate 1 are integrally formed by punching, and the latch holder 3) includes a first side surface 20, and a second side surface 21 and a third side surface 22 formed by bending two ends of the first side surface 20. The first side surface 20 is provided with a first sliding groove 23, the second side surface 21 is provided with a second sliding groove 24, the third side surface 22 is provided with a third sliding groove 25, and the first sliding groove 23 is communicated with the second sliding groove 24. The lock pin 6 is arranged in the second sliding groove 24 and the third sliding groove 25. The connecting screw between the handle 7 and the locking pin 6 is arranged in the first sliding groove 23.

Preferably, the bottom of the second side 21 and the third side 22 is pressed against the surface of the bottom plate 1 to improve the strength.

Preferably, the front end of the bottom plate 1 is integrally stamped and formed with an L-shaped lock column 26, lock holes 27 are respectively formed between the lock column 26 and the upper crank arm 4 and between the lock column 26 and the lower crank arm 5, and a padlock is arranged in the lock holes 27 to prevent the locking mechanism from being operated by non-working personnel by mistake.

Preferably, the fixing column 10 and the rear end of the bottom plate 1 are integrally formed in a punch forming mode, so that the strength is further improved, and the structure is simplified.

The foregoing is merely an embodiment of the present invention, and it should be noted that those skilled in the art can make various modifications and improvements without departing from the principle of the present invention, and such modifications and improvements should be considered as the protection scope of the present invention.

Claims

1. The locking mechanism comprises a bottom plate (1), a connecting shaft (2) arranged at the front end of the bottom plate (1), a lock pin frame (3) arranged at the rear end of the bottom plate (1), an upper crank arm (4) and a lower crank arm (5) coaxially arranged on the connecting shaft (2), a lock pin (6) arranged in the lock pin frame (3) in a sliding manner, a handle (7) hinged to the upper end of the lock pin frame (3), wherein the lower end of the handle (7) is connected with the lock pin (6), a lock groove (8) matched with the lock pin (6) is formed between the upper crank arm (4) and the lower crank arm (5) together, a torsion spring (9) is arranged on the connecting shaft (2), one end of the torsion spring (9) is connected with the upper crank arm (4) or the lower crank arm (5), and the other end of the torsion spring is connected with a fixed column (10), and is characterized in that: connecting axle (2) include riveting portion (11), location portion (12) and connecting portion (13) and establish axle sleeve (14) on connecting portion (13), connecting portion (13) correspond axle sleeve (14) upper end is equipped with retaining ring (15), corresponds axle sleeve (14) lower extreme is equipped with down retaining ring (16), the bottom of axle sleeve (14) is equipped with well retaining ring (17), riveting portion (11) riveting is in on bottom plate (1), lower turning arm (5) set up under between retaining ring (16) and axle sleeve (14), go up turning arm (4) and set up between last retaining ring (15) and axle sleeve (14), torsional spring (9) set up on axle sleeve (14).

2. The locking mechanism as recited in claim 1, wherein: the top of the connecting part (13) is fixed with an upper retainer ring (15) through a first clamp spring (18).

3. The locking mechanism as recited in claim 1, wherein: and the bottom of the shaft sleeve (14) is fixed with a middle retainer ring (17) through a second clamp spring (19).

4. The locking mechanism as recited in claim 1, wherein: lockpin frame (3) with the integrative stamping forming in bottom plate (1) rear end, just lockpin frame (3) include first side (20) and pass through second side (21), third side (22) that first side (20) both ends formed of bending, be equipped with first spout (23) on first side (20), be equipped with second spout (24) on second side (21), be equipped with third spout (25) on third side (22), first spout (23) and second spout (24) intercommunication.

5. The locking mechanism as recited in claim 4, wherein: the bottoms of the second side surface (21) and the third side surface (22) are abutted against the surface of the bottom plate (1).

6. The locking mechanism as recited in claim 1, wherein: the integrated stamping forming of bottom plate (1) front end has lock post (26) of "L" shape, be equipped with lockhole (27) between lock post (26) and last crank arm (4), lower crank arm (5).

7. The locking mechanism as recited in claim 1, wherein: the fixing column (10) and the rear end of the bottom plate (1) are integrally formed in a punch forming mode.