Self-locking device for switch

Abstract

The utility model relates to a self-locking device for a switch, which comprises a shell, a closing assembly is arranged on the front side of the outer wall of the shell, a mounting block is arranged on the front side of the outer wall of the shell, the mounting block is arranged on the upper side of the closing assembly, a first locking assembly is arranged in an inner cavity of the mounting block, and a second locking assembly is arranged in the inner cavity of the mounting block. Inserting holes are formed in the middles of the left side and the right side of the inner wall of the mounting block, and through mutual cooperation of all the parts, when the wedge-shaped inserting block ascends and is pulled out of the wedge-shaped groove and locking of the limiting disc is relieved, the inserting rods can be inserted into the inserting holes to fix the connecting block, so that the wedge-shaped inserting block protects the current state and cannot descend, and the safety of a user is guaranteed. Therefore, the wedge-shaped insertion block does not need to be fixed manually, the device can be operated by a single hand to perform a switching-on effect, the limitation is greatly reduced, the practicability of the device is improved, and the insertion rod can be pulled out of the insertion hole by pushing the push block backwards, so that the locking of the connection block is conveniently relieved, and the wedge-shaped insertion block is automatically inserted into the wedge-shaped groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric appliance technical field especially is related to a self locking device for switch. BACKGROUND

[0002] In electric appliances, self-locking switches are often used in application scenarios that require a certain state to be maintained for a long time, such as power switches in household appliances such as electric fans, televisions, and stereos, and start-stop controls for equipment such as machine tools and conveyor belts in industrial automation scenarios.

[0003] The existing patent (announcement number: CN217719446U) discloses a self-locking mechanism for a high-voltage vacuum switch, which includes a housing and a closing shaft provided on the outer wall of the housing. The end of the closing shaft away from the housing is fixedly connected with a closing operation handle, and a limiting disc is fixedly sleeved on the closing shaft. The inventor found that the following problems in the prior art have not been well solved in the process of implementing this scheme: When the vacuum switch is operated, both hands are needed to operate, one hand pulls the ring upward to move the limiting block upward to disengage from the wedge-shaped groove, and the other hand turns the closing operation handle. However, the vacuum switch may be installed in a relatively narrow space, and the operation of both hands is not convenient, thus having certain limitations. SUMMARY

[0004] The utility model aims at providing a self locking device for switch to solve the problems mentioned in the background.

[0005] The technical scheme of the utility model is a self locking device for switch, which includes a housing, a closing assembly is provided on the front side of the outer wall of the housing, an installation block is provided on the front side of the outer wall of the housing, the installation block is arranged on the upper side of the closing assembly, a first locking assembly is arranged in the inner cavity of the installation block, plug holes are formed in the middle of the left and right inner walls of the installation block, a second locking assembly is arranged on the first locking assembly, and the second locking assembly is matched with the plug holes.

[0006] In one embodiment, the closing assembly includes a closing shaft, the closing shaft is installed on the front side of the outer wall of the housing, the end of the closing shaft away from the housing (1) is fixedly connected with a closing operation handle, a limiting disc is fixedly sleeved on the closing shaft, a plurality of wedge-shaped grooves are formed in the limiting disc, a fixed ring is fixedly connected to the middle of the front side of the outer wall of the limiting disc, and the closing shaft is fixedly sleeved on the inner side of the fixed ring.

[0007] In one embodiment, the first locking assembly comprises two pull rods, the two pull rods are movably sleeved on the left and right sides of the top of the mounting block, the lower end faces of the two pull rods are fixedly connected with a connecting block, the middle of the bottom surface of the connecting block is fixedly sleeved with a wedge-shaped plug, the bottom of the wedge-shaped plug is movably sleeved on the bottom of the mounting block and penetrates to the outside, and the lower end of the wedge-shaped plug is inserted into the wedge-shaped groove.

[0008] In one embodiment, the middle of the surface of the two pull rods is sleeved with a first spring, one end of the first spring is fixedly connected with the top surface of the inner wall of the mounting block, the other end of the first spring is fixedly connected with the top surface of the connecting block, the top surface of the two pull rods is fixedly connected with a pull block, and the middle of the top surface of the pull block is fixedly connected with a pull ring.

[0009] In one embodiment, the second locking assembly comprises two fixed blocks, the two fixed blocks are fixedly connected on the left and right sides of the top of the connecting block, the middle of each fixed block is movably sleeved with a plug rod, the opposite faces of the two plug rods are respectively attached to the left and right sides of the inner wall of the mounting block, the opposite ends of the surfaces of the two plug rods are fixedly sleeved with connecting plates, the middle of the surface of the two plug rods is sleeved with a second spring, one end of the second spring is fixedly connected with the side of the connecting plate close to the fixed block, and the other end of the second spring is fixedly connected with the side of the fixed block close to the connecting plate.

[0010] In one embodiment, the end face of the opposite side of the two plug rods is fixedly connected with a first wedge-shaped block, the left and right sides of the front side of the mounting block are fixedly connected with push rods, the rear ends of the two push rods are fixedly connected with second wedge-shaped blocks, the first wedge-shaped block and the second wedge-shaped block are matched with each other, and the end faces of the two push rods are fixedly connected with a push block.

[0011] In one embodiment, the left and right sides of the mounting block are fixedly connected with fixed seats, and the fixed seats are bolted on the front side of the outer wall of the shell.

[0012] The utility model provides the beneficial effect that:

[0013] Through the cooperation between the components, when the wedge-shaped plug is pulled out from the wedge-shaped groove and the locking of the limiting disc is released, the plug rod can be inserted into the plug hole, the connecting block is fixed, the wedge-shaped plug cannot be lowered in the current state, manual fixing of the wedge-shaped plug is not needed, the device can be operated by one person, the limitation is greatly reduced, the practicability of the device is improved, the plug rod can be pulled out from the plug hole by pushing the push block backward, the locking of the connecting block is released, the wedge-shaped plug is automatically inserted into the wedge-shaped groove. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view of the utility model.

[0015] Figure 2 is the main sectional view of the utility model;

[0016] Figure 3 is the main sectional view of the installation block;

[0017] Figure 4 is the Figure 3 is the structure enlarged view of A in the middle;

[0018] Figure 5 is the bottom sectional view of the installation block;

[0019] Figure 6 is the Figure 5 is the structure enlarged view of B in the middle.

[0020] In the drawings, 1, shell; 2, closing assembly; 21, closing rotation shaft; 22, closing operation handle; 23, limit disc; 24, wedge-shaped slot; 25, fixed ring; 3, installation block; 4, first locking assembly; 41, pull rod; 42, connecting block; 43, wedge-shaped plug; 44, first spring; 45, pull block; 46, pull ring; 5, insertion hole; 6, second locking assembly; 61, fixed block; 62, insertion rod; 63, connecting sheet; 64, second spring; 7, first wedge-shaped block; 8, push rod; 9, second wedge-shaped block; 10, push block; 11, fixed seat. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The technical scheme of the utility model will be further described below in combination with the drawings of the embodiments of the utility model. The utility model is not limited to the following specific embodiments.

[0022] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In one embodiment, as Figures 1-6As shown, a kind of self-locking device for switch includes shell 1, the front side of the outer wall of shell 1 is equipped with closing assembly 2, the front side of the outer wall of shell 1 is equipped with mounting block 3, mounting block 3 is set on the upper side of closing assembly 2, the inner cavity of mounting block 3 is equipped with first locking assembly 4, the middle part of the left and right sides of mounting block 3 is equipped with insertion hole 5, first locking assembly 4 is equipped with second locking assembly 6, and second locking assembly 6 is matched with insertion hole 5.

[0024] In order to be able to close the vacuum switch, closing assembly 2 includes closing rotation shaft 21, closing rotation shaft 21 is installed on the front side of the outer wall of shell 1, the end of closing rotation shaft 21 away from shell is fixedly connected with closing operation handle 22, closing rotation shaft 21 is fixedly sleeved with limiting disc 23, a plurality of wedge-shaped grooves 24 are formed in limiting disc 23, the middle part of the front side of the outer wall of limiting disc 23 is fixedly connected with fixed ring 25, and closing rotation shaft 21 is fixedly sleeved on the inner side of fixed ring 25.

[0025] In order to be able to lock limiting disc 23, thereby preventing the security risks caused by accidental touch closing operation handle 22, first locking assembly 4 includes two pull rods 41, two pull rods 41 are movably sleeved on the left and right sides of the top of mounting block 3, the lower end surface of two pull rods 41 is fixedly connected with connecting block 42, the middle part of the bottom surface of connecting block 42 is fixedly sleeved with wedge-shaped plug 43, wedge-shaped plug 43 is movably sleeved on the bottom of mounting block 3 and penetrates to the outside, and the lower end of wedge-shaped plug 43 is inserted into wedge-shaped groove 24.

[0026] In order to facilitate the upward pulling of connecting block 42 and the automatic downward movement of connecting block 42, the middle part of the surface of two pull rods 41 is sleeved with first spring 44, one end of first spring 44 is fixedly connected with the top surface of the inner wall of mounting block 3, the other end of first spring 44 is fixedly connected with the top surface of connecting block 42, the top surface of connecting block 42 is fixedly connected with pull block 45, and the middle part of the top surface of pull block 45 is fixedly connected with pull ring 46.

[0027] In order to lock connecting block 42 after rising, so that wedge-shaped plug 43 remains in the current state and cannot move downward, second locking assembly 6 includes two fixed blocks 61, two fixed blocks 61 are fixedly connected on the left and right sides of the top surface of connecting block 42, the middle part of each fixed block 61 is movably sleeved with plug rod 62, the opposite faces of two plug rods 62 are respectively fitted with the left and right sides of the inner wall of mounting block 3, the opposite ends of the surfaces of two plug rods 62 are fixedly sleeved with connecting piece 63, the middle part of the surface of two plug rods 62 is sleeved with second spring 64, one end of second spring 64 is fixedly connected with the side of connecting piece 63 close to fixed block 61, and the other end of second spring 64 is fixedly connected with the side of fixed block 61 close to connecting piece 63.

[0028] In order to facilitate the plug rod 62 from the plug hole 5 is pulled out, the two plug rod 62 opposite side end face is fixedly connected with the first wedge 7, the mounting block 3 front side is fixedly connected with the push rod 8, the two push rod 8 rear end is fixedly connected with the second wedge 9, the first wedge 7 and the second wedge 9 are matched with each other, the end face of the two push rod 8 is fixedly connected with the push block 10.

[0029] In order to facilitate the installation block 3 is disassembled and assembled in the shell 1, the left and right sides of the mounting block 3 are fixedly connected with the fixed seat 11, and the fixed seat 11 is bolted to the front side of the outer wall of the shell 1.

[0030] Working principle: when the utility model is used, the pull ring 46 is pulled upward to make the pull rod 41 rise, the pull rod 41 drives the connecting block 42 to rise, the connecting block 42 drives the wedge-shaped plug block 43 to rise, the lower end of the wedge-shaped plug block 43 is pulled out from the wedge-shaped slot 24, the locking of the limiting disc 23 is released, the connecting block 42 rises and drives the second locking assembly 6 to rise, when the plug rod 62 in the second locking assembly 6 is aligned with the plug hole 5, the second spring 64 drives the connecting piece 63 to move, the connecting piece 63 drives the plug rod 62 to move, the plug rod 62 is inserted into the plug hole 5, the connecting block 42 is fixed, the wedge-shaped plug block 43 is protected in the current state and cannot descend, at this time, the operator can rotate the closing operation handle 22 to close, in this way, after the locking of the limiting disc 23 is released, the wedge-shaped plug block 43 can be automatically locked and kept from descending, so that the wedge-shaped plug block 43 does not need to be manually fixed, the device can be operated by a single person to close, the restrictiveness is greatly reduced, and the practicability of the device is improved; when the limiting disc 23 needs to be locked, the push block 10 is pushed backward to make the push rod 8 move backward, the push rod 8 drives the second wedge 9 to move backward, the second wedge 9 moves backward and is attached to the first wedge 7, and the first wedge 7 is pushed, so that the two first wedges 7 move toward each other, the first wedge 7 drives the plug rod 62 to move, the plug rod 62 is pulled out from the plug hole 5, so that the locking of the connecting block 42 is released, then the first spring 44 drives the connecting block 42 to descend, the wedge-shaped plug block 43 descends and is inserted into the wedge-shaped slot 24, in this way, the locking of the connecting block 42 is conveniently released, and the wedge-shaped plug block 43 is automatically inserted into the wedge-shaped slot 24.

[0031] The technical features of the above embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0032] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A self-locking device for a switch, characterized by comprising: The utility model provides a closing assembly and locking assembly of switch cabinet, including the casing, the front side of casing outer wall is equipped with closing assembly, the front side of casing outer wall is equipped with mounting block, the mounting block sets up the upper side of closing assembly, the inner chamber of mounting block is equipped with first locking assembly, the middle part of left and right sides of mounting block inner wall all are equipped with the insertion hole, the first locking assembly is equipped with second locking assembly on, and the second locking assembly is matched with insertion hole.

2. A self-locking device for a switch as defined in claim 1, characterized in that: The closing assembly includes a closing shaft, the closing shaft is installed on the front side of the outer wall of the shell, the end of the closing shaft away from the shell (1) is fixedly connected with a closing handle, the closing shaft is fixedly sleeved with a limiting disc, a plurality of wedge-shaped grooves are formed in the limiting disc, a fixing ring is fixedly connected to the middle part of the front side of the outer wall of the limiting disc, and the closing shaft is fixedly sleeved on the inner side of the fixing ring.

3. A latching device for a switch as defined in claim 1, wherein: The first locking assembly includes two pull rods, the two pull rods are movably sleeved on the left and right sides of the top of the mounting block, the lower end surfaces of the two pull rods are fixedly connected with a connecting block, a wedge-shaped plug is fixedly sleeved on the middle part of the bottom surface of the connecting block, and the wedge-shaped plug is movably sleeved on the bottom of the mounting block and penetrates to the outside, and the lower end of the wedge-shaped plug is inserted into the wedge-shaped groove.

4. A latching device for a switch as defined in claim 3, wherein: The middle parts of the surfaces of the two pull rods are sleeved with first springs, one end of the first spring is fixedly connected with the top surface of the inner wall of the mounting block, the other end of the first spring is fixedly connected with the top surface of the connecting block, the top surfaces of the two pull rods are fixedly connected with pull blocks, and the middle part of the top surface of the pull block is fixedly connected with a pull ring.

5. A latching device for a switch as defined in claim 1, wherein: The second locking assembly includes two fixed blocks, the two fixed blocks are fixedly connected on the left and right sides of the top surface of the connecting block, the middle part of each fixed block is movably sleeved with a plug rod, the opposite surfaces of the two plug rods are respectively attached to the left and right sides of the inner wall of the mounting block, the opposite ends of the surfaces of the two plug rods are fixedly sleeved with connecting pieces, the middle parts of the surfaces of the two plug rods are sleeved with second springs, one end of the second spring is fixedly connected with the side of the connecting piece close to the fixed block, and the other end of the second spring is fixedly connected with the side of the fixed block close to the connecting piece.

6. A latching device for a switch as defined in claim 5, wherein: The end surfaces of the opposite sides of the two plug rods are fixedly connected with first wedge-shaped blocks, the left and right sides of the front side of the mounting block are fixedly connected with push rods, the rear ends of the two push rods are fixedly connected with second wedge-shaped blocks, the first wedge-shaped blocks and the second wedge-shaped blocks are matched with each other, and the end surfaces of the two push rods are fixedly connected with a push block.

7. A latching device for a switch as defined in claim 1, wherein: The left and right sides of the mounting block are fixedly connected with fixed seats, and the fixed seats are bolted on the front side of the outer wall of the shell.

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