Instantaneous switchable interlocking structure

Abstract

The utility model provides an interlocking structure capable of switching instantaneously, which belongs to the technical field of electrical safety and comprises two limiting plates and a driving assembly. The two limiting plates are connected with the two air switches in a one-to-one correspondence mode, and the two limiting plates are arranged in parallel and have the freedom degree in the action direction of the switches. The driving assembly is connected with the free ends of the two limiting plates at the same time, and the driving assembly drives the two limiting plates to move reversely at the same time so as to pull the two air switches to switch the states at the same time. According to the interlocking structure capable of instantaneous switching, the driving structure is adopted to drive the two limiting plates to move at the same time, instantaneous switching of the two air switches is achieved, under the condition that interlocking is met, it is guaranteed that equipment is not powered down at the same time, the interlocking structure is suitable for more application scenes, and operation is labor-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical safety, and more specifically, relates to an interlock structure with instantaneous switching. Background Art

[0002] An air circuit breaker (referred to as an air switch) is a circuit breaker whose contacts are separated and combined in the air under atmospheric pressure. The air switch is a very important electrical appliance in a low-voltage power distribution network and a power drive system. It combines control and multiple protection functions. In addition to being able to complete the connection and disconnection of the circuit, it can also protect against short circuits, severe overloads, and undervoltage occurring in the circuit or electrical equipment. At the same time, it can also be used to start the motor infrequently.

[0003] In the application of power supply equipment, there are many occasions where an interlock structure is required to limit the misoperation of the air switch. At present, the air switch interlock structure of power supply equipment mostly uses a slider-type baffle to achieve interlocking. During operation, one of the two air switches is kept closed by the movement of the slider. However, the slider-type baffle interlock structure requires one air switch to be disconnected before the other air switch can be closed, resulting in a delay situation, and there are limitations in the application scenarios. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an interlock structure with instantaneous switching, aiming to solve the problem of delay during the switching of two air switches.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide an interlock structure with instantaneous switching, including two limit plates and a driving component; the two limit plates are respectively connected to two air switches in a one-to-one correspondence, the two limit plates are arranged in parallel and have degrees of freedom along the switch action direction; the driving component is simultaneously connected to the free ends of the two limit plates, and the driving component drives the two limit plates to move in opposite directions simultaneously to pull the two air switches to switch states simultaneously.

[0006] As another embodiment of the present application, the limit plate has a guiding structure, the guiding structure includes a waist-shaped hole opened on the limit plate and a guiding member passing through the waist-shaped hole, the waist-shaped hole is a long strip hole, and the length direction of the waist-shaped hole is consistent with the length direction of the limit plate; the limit plate is slidably matched with the guiding member by means of the waist-shaped hole.

[0007] As another embodiment of the present application, the guiding structure further includes a guiding block, the guiding block is located on one side of the air switch, and the guiding block is slidably matched with the limit plate.

[0008] As another embodiment of the present application, the limit plate is a U-shaped plate with an opening downward, and the guiding block is located at the lower opening of the limit plate and is slidably matched with the folded edge structures on both sides of the limit plate.

[0009] As another embodiment of the present application, the guiding member is provided at the upper end of the guiding block.

[0010] As another embodiment of the present application, a positioning hole is provided at one end of the limiting plate away from the driving assembly, and the positioning hole is clamped with the switch of the air switch.

[0011] As another embodiment of the present application, the driving assembly includes a connecting rod structure, the connecting rod structure includes a driving rod, and both ends of the driving rod are respectively hinged to the free ends of the two limiting plates.

[0012] As another embodiment of the present application, the driving assembly further includes two linkage rods. The driving rod is located between the two limiting plates, and the middle part of the driving rod is rotatably connected to the mounting plate of the air switch; the two linkage rods are respectively hinged to both ends of the driving rod, and the two linkage rods are respectively hinged to the two limiting plates in one-to-one correspondence.

[0013] As another embodiment of the present application, a rotating shaft is provided on the lower end surface of the middle part of the driving rod, and the rotating shaft is rotatably connected to the mounting plate of the air switch.

[0014] As another embodiment of the present application, a driving shaft is connected to the upper end of the driving rod, and the driving shaft is coaxially arranged with the rotating shaft; a driving handle is sleeved and connected on the driving shaft, and the driving handle is clamped and matched with the driving shaft.

[0015] The beneficial effects of the instantaneously switchable interlock structure provided by the present utility model are as follows: Compared with the prior art, in the instantaneously switchable interlock structure of the present utility model, when the driving assembly drives the two limiting plates to move in opposite directions at the same time, one air switch can be driven to move upward and the other air switch can be driven to move downward at the same time, realizing the state switching of the two air switches; the driving structure is adopted to drive the two limiting plates to move simultaneously to achieve the instantaneously switching of the two air switches. While meeting the interlock requirement, it also ensures that the device does not lose power, is suitable for more application scenarios, and is labor-saving in operation; and the limitation of the degree-of-freedom direction of the limiting plate further improves the accuracy of the force application direction of the limiting plate on the air switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1Schematic diagram of the instantaneously switchable interlock structure in the first state provided by the first embodiment of the present utility model;

[0018] Figure 2 Schematic diagram of the connection structure of the limit plate and the drive assembly in the first state provided by the first embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of the instantaneously switchable interlock structure in the second state provided by the first embodiment of the present utility model;

[0020] Figure 4 Schematic diagram of the connection between the limit plate and the guide block provided by the first embodiment of the present utility model;

[0021] Figure 5 Schematic diagram of the instantaneously switchable interlock structure in the first state provided by the second embodiment of the present utility model.

[0022] In the figure: 1, mounting plate; 2, limit plate; 3, air switch; 4, guide bolt; 5, guide block; 6, linkage rod; 7, drive rod; 8, rotating shaft; 9, drive shaft; 10, drive handle; 11, waist-shaped hole; 12, connection groove. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] Please refer to Figures 1 to 5 , and now the instantaneously switchable interlock structure provided by the present utility model will be described. The instantaneously switchable interlock structure includes two limit plates 2 and a drive assembly; the two limit plates 2 are respectively and correspondingly connected to two air switches 3 arranged longitudinally at intervals, the two limit plates are arranged in parallel and have freedom in the switch action direction; the drive assembly is simultaneously connected to the free ends of the two limit plates 2, and the drive assembly drives the two limit plates 2 to move in opposite directions simultaneously to pull the two air switches to switch states simultaneously.

[0025] The instantaneously switchable interlock structure provided by the present utility model, compared with the prior art, when the driving assembly drives the two limiting plates 2 to move simultaneously in opposite directions, it can simultaneously drive one air switch 3 to move upward and the other air switch 3 to move downward, realizing the state switching of the two air switches 3; the method of driving the two limiting plates 2 to move simultaneously by the driving structure realizes the instantaneously switching of the two air switches 3. While meeting the interlock requirement, it ensures that the device does not lose power, is suitable for more application scenarios, and is labor-saving in operation; and the limitation of the direction of freedom of the limiting plate further improves the accuracy of the force application direction of the limiting plate 2 on the air switch 3.

[0026] In some possible embodiments, please refer to Figures 1 to 4 , the limiting plate (2) has a guiding structure, and the guiding structure includes a waist-shaped hole (11) formed in the limiting plate (2) and a guiding member penetrating through the waist-shaped hole (11). The waist-shaped hole (11) is an elongated hole, and the length direction of the waist-shaped hole (11) is consistent with the length direction of the limiting plate (2); the limiting plate (2) is slidably matched with the guiding member by means of the waist-shaped hole (11).

[0027] An installation plate 1 is provided on the upper side of the air switch. The installation plate 1 covers the lower part of the air switch and is provided with a through hole allowing the air switch 3 to extend out; the installation plate 1 is used to carry structures such as the guiding member and the driving assembly. The guiding member is a guiding bolt 4 vertically installed on the installation plate 1.

[0028] The guiding bolt 4 penetrates through the waist-shaped hole 11 on the limiting plate 2 above the installation plate 1 and is fixed on the upper end surface of the installation plate 1. The guiding bolt 4 is slidably matched with the waist-shaped hole 11 on the limiting plate 2 to limit the moving direction of the above-mentioned limiting plate 2 and improve the accuracy of the force application direction of the limiting plate 2 on the air switch 3.

[0029] The length of the waist-shaped hole 11 is the movable displacement of the limiting plate 2, and the length of the waist-shaped hole 11 needs to be greater than the displacement amount when the air switch 3 switches states.

[0030] In addition, the guiding structure further includes a guiding block 5. The guiding block 5 is located on one side of the air switch 3, and the guiding block 5 is slidably matched with the limiting plate 2.

[0031] The guiding block 5 is arranged on the upper end surface of the installation plate 1. The guiding block 5 is slidably matched with the limiting plate 2 to further limit the moving direction of the limiting plate 2 and limit the force application direction of the limiting plate 2 on the air switch 3.

[0032] Optionally, the guiding block 5 is located at the lower end of the limiting plate 2. The guiding bolt 4 is arranged on the upper end surface of the guiding block 5.

[0033] In some possible embodiments, please refer to Figure 4, the limiting plate 2 is a U-shaped plate with an opening facing downwards. The guiding block 5 is located at the lower opening of the limiting plate 2 and is in sliding fit with the folded edge structures on both sides of the limiting plate 2.

[0034] The opening of the limiting plate 2 faces downwards, and the limiting plate 2 is sleeved above the guiding block 5 from top to bottom. There is a gap between the upper end surface of the guiding block 5 and the lower end surface of the top of the limiting plate 2. A guiding bolt 4 is fixedly installed in the middle of the upper end surface of the guiding block 5. The two side walls in the width direction of the guiding block 5 are slidably connected to the folded edge structures on both sides of the limiting plate 2.

[0035] Optionally, there are guiding grooves along the horizontal direction on the two side walls in the width direction of the guiding block 5, and strip-shaped protruding structures adapted to the guiding grooves are provided on the folded edges on both sides of the limiting plate 2.

[0036] Optionally, the guiding block 5 is a U-shaped plate body with an opening facing downwards. The open end of the guiding block 5 is attached to the mounting plate 1 and fixedly connected to the mounting plate 1. The closed end of the guiding block 5 faces the top of the limiting plate 2, and the guiding bolt 4 is installed at the closed end of the guiding block 5. As Figure 4 shown, a nut is installed on the lower end surface of the closed end of the guiding block 5, and the end of the guiding bolt 4 penetrates through the closed end of the guiding block 5 and is threadedly fixed to the nut.

[0037] In some possible embodiments, please refer to Figure 1 , a positioning hole is provided at one end of the limiting plate 2 away from the driving assembly, and the positioning hole is snap-fitted with the air switch 3.

[0038] The end of the limiting plate 2 is fixedly connected or movably connected to the air switch 3. For the convenience of disassembly, installation and replacement of the limiting plate 2, the limiting plate 2 and the air switch 3 are movably connected. Specifically, the limiting plate 2 is sleeved outside the air switch 3 by means of the positioning hole. When the limiting plate 2 moves, the side wall of the positioning hole abuts against the air switch 3 and applies a force to it to push the air switch 3 to move.

[0039] In some possible embodiments, please refer to Figures 1 to 3 and Figure 5 , the driving assembly includes a driving rod 7, and both ends of the driving rod 7 are hinged to the free ends of the two limiting plates 2 respectively.

[0040] In the second embodiment, as Figure 5 shown, for two horizontally spaced air switches, the limiting plate 2 is arranged longitudinally, and a driving rod 7 is hinged to one end of the limiting plate 2 away from the air switch 3. The middle of the driving rod 7 is rotatably installed on the mounting plate 1. When one of the air switches 3 moves, the two limiting plates 2 and the driving rod 7 shift simultaneously, thereby driving the other air switch 3 to move to achieve the purpose of interlocking.

[0041] As Figures 1 to 3As shown, the driving component further includes two linkage rods 6. The driving rod 7 is located between the two limiting plates 2, and the middle part of the driving rod 7 is rotatably connected to the mounting plate 1 of the air switch. The two linkage rods 6 are respectively hinged to the two ends of the driving rod 7, and the two linkage rods 6 are respectively hinged to the two limiting plates 2 in one-to-one correspondence.

[0042] The driving rod 7 in the middle rotates around its central axis, driving the movement of the linkage rods 6 connected to its two ends. While the two linkage rods 6 rotate along with the driving rod 7, their ends drive the limiting plates 2 to approach or move away from the driving rod 7.

[0043] Specifically, a rotating shaft 8 is provided at the center of the driving rod 7, and the lower end of the rotating shaft 8 is rotatably connected to the mounting plate 1. A connecting groove 12 is formed at the upper end of the driving rod 7, and a driving shaft 9 is installed in the connecting groove 12. The driving shaft 9 and the rotating shaft 8 are coaxially arranged. The driving shaft 9 can rotate under the action of an external force and drive the driving rod 7 to rotate. The driving shaft 9 and the connecting groove 12 can be welded or clamped, and the cross-sectional shape of the connecting groove 12 can be circular or rectangular.

[0044] Optionally, a driving handle 10 is connected to the end of the driving shaft 9. The driving handle 10 is clamped to the upper end of the driving shaft 9, which is convenient for the rotation of the driving shaft 9. The driving handle 10 and the driving shaft 9 are clamped, which is convenient for the removal and replacement of the driving handle 10.

[0045] As Figures 1 to 3 shown, hinge holes are provided at both ends of the driving rod 7 in the length direction, and the hinge holes are used to hinge the linkage rods 6. In the two states of the air switch 3, the length direction of the driving rod 7 is along the connection line direction of the two air switches 3 or perpendicular to the connection line direction of the two air switches 3.

[0046] When instantaneously switching the air switch 3, only need to rotate the driving handle 10 to drive the driving part to rotate, then the movement of the limiting plate 2 can be realized, and the purpose of driving the two air switches 3 to switch states simultaneously by the limiting plate 2 can be achieved. At the same time, the cooperation between the limiting plate 2 and the driving component can achieve the effect of interlocking.

[0047] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An instantaneously switchable interlocking structure, characterized in that: The invention comprises two limit plates (2) and a driving assembly; the two limit plates (2) are connected to two air switches (3) in a one-to-one correspondence, the two limit plates are arranged in parallel and have a degree of freedom along the switch action direction; the driving assembly is simultaneously connected to the free ends of the two limit plates (2), and the driving assembly drives the two limit plates (2) to move in opposite directions at the same time, so as to pull the two air switches (3) to switch their states at the same time.

2. The instantaneously switchable interlocking structure according to claim 1, characterized in that: The limiting plate (2) has a guiding structure, which comprises a waist hole (11) opened on the limiting plate (2) and a guiding member passing through the waist hole (11); the waist hole (11) is a long hole, and the length direction of the waist hole (11) is consistent with the length direction of the limiting plate (2); the limiting plate (2) is slidably matched with the guiding member by means of the waist hole (11).

3. The instantaneously switchable interlocking structure according to claim 2, characterized in that: The guide structure further comprises a guide block (5), the guide block (5) is located on one side of the circuit breaker (3), and the guide block (5) is slidably matched with the limit plate (2).

4. The instantaneously switchable interlocking structure according to claim 3, characterized in that: The limiting plate (2) is a U-shaped plate with an opening facing downward, and the guide block (5) is located at the lower opening of the limiting plate (2) and is slidably matched with the folding structures on both sides of the limiting plate (2).

5. The instantaneously switchable interlocking structure according to claim 4, characterized in that: The guide member is arranged at the upper end of the guide block (5).

6. The instantaneously switchable interlocking structure according to claim 1, characterized in that: A positioning hole is provided at one end of the limiting plate (2) away from the driving assembly, and the positioning hole is engaged with the switch of the circuit breaker.

7. The instantaneously switchable interlocking structure according to claim 1, characterized in that: The driving assembly comprises a driving rod (7), and two ends of the driving rod (7) are respectively hinged to the free ends of the two limiting plates (2).

8. The instantaneously switchable interlocking structure according to claim 7, characterized in that: The driving assembly further comprises two linkage rods (6), wherein the driving rod (7) is located between the two limiting plates (2), and the middle portion of the driving rod (7) is rotatably connected to the open mounting plate (1); the two linkage rods (6) are respectively hinged to the two ends of the driving rod (7), and the two linkage rods (6) are hinged to the two limiting plates (2) in a one-to-one correspondence.

9. The instantaneously switchable interlocking structure according to claim 8, characterized in that: A rotating shaft (8) is provided on the lower end surface of the middle portion of the driving rod (7), and the rotating shaft (8) is rotatably connected to the open mounting plate (1).

10. The instantaneously switchable interlocking structure according to claim 9, characterized in that: The upper end of the driving rod (7) is connected to a driving shaft (9), and the driving shaft (9) is coaxially arranged with the rotating shaft (8); a driving handle (10) is sleeved and connected to the driving shaft (9), and the driving handle (10) is snap-fitted with the driving shaft (9).

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