A switch locking / unlocking mechanism and switch

Abstract

This utility model relates to the field of low-voltage electrical technology, and in particular to a switch locking and unlocking mechanism and a switch. The switch locking and unlocking mechanism provided by this utility model includes: a limiting arm, a movable trigger, and a switch handle; the limiting arm is provided with a stop; the movable trigger is tractively connected to the limiting arm; when the movable trigger is in the first trigger position, the limiting arm is in the first position, and the stop is located on the opening and closing movement path of the switch handle to limit the closing of the switch handle; when the movable trigger is in the second trigger position, the limiting arm is in the second position, and the stop is located outside the opening and closing movement path of the switch handle to allow the switch handle to close. To close the switch, the movable trigger must first be moved from the first trigger position to the second trigger position, and then the switch handle must be closed, effectively improving the safety of the power supply system.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a switch locking and unlocking mechanism and a switch. Background Technology

[0002] A switch can switch between closed and open states to control the conduction and disconnection of a circuit. However, in the prior art, when the switch handle is in the open position, the handle can be pushed to close at any time. This allows closing to be achieved even when the closing conditions are not met, posing a safety hazard and easily causing damage to the switch. Utility Model Content

[0003] The purpose of this utility model is to provide a switch locking and unlocking mechanism and a switch to solve the technical problem in the prior art where the switch handle can be pushed to close the switch at any time when the switch handle is in the open position. This results in the switch being closed even when the closing conditions are not met, which poses a safety hazard and is prone to damage to the switch.

[0004] In a first aspect, this utility model provides a switch locking and unlocking mechanism, including: a limiting swing arm, a movable trigger, and a switch handle; The limiting swing arm is provided with a stop part; The movable trigger can reciprocate between a first trigger position and a second trigger position, and the movable trigger is tractively connected to the limiting swing arm; When the active trigger is in the first trigger position, the limiting arm is in the first position, and the stop is located on the opening and closing movement path of the switch handle to limit the closing of the switch handle; When the active trigger is in the second trigger position, the limiting arm is in the second position, and the stop is located outside the opening and closing movement path of the switch handle so that the switch handle can close.

[0005] In an optional embodiment, a movable unlocking structure is further included, and the movable unlocking structure has an unlocking position and a locking position. The movable unlocking structure is provided with a first limiting part and an unlocking part. The movable trigger is provided with a second limiting part that cooperates with the first limiting part. The unlocking part is located on the opening and closing movement path of the switch handle, and when the switch handle is closed, the movable unlocking structure can be switched from the locking position to the unlocking position through the unlocking part. When the active trigger is located at the first trigger position, the active unlocking structure is located at the unlocking position, and the first limiting part and the second limiting part are separated and in an unlocked state, so that the active trigger can move along the direction from the first trigger position to the second trigger position, thereby driving the limiting swing arm to swing along the direction from the first position to the second position. When the active trigger is in the second trigger position, the active unlocking structure is in the locked position, and the first limiting part and the second limiting part are connected and locked to restrict the movement of the active trigger along the direction from the second trigger position to the first trigger position, thereby restricting the swing arm from swinging along the direction from the second position to the first position. The active unlocking structure includes a release lever and a linkage component; One end of the release lever forms the unlocking part, and the other end is connected to the linkage component. The linkage component is provided with the first limiting part.

[0006] In an optional embodiment, the limiting swing arm is provided with an elongated groove, the movable trigger is provided with a protrusion, and the movable trigger is connected to the elongated groove on the limiting swing arm via the protrusion.

[0007] In an optional embodiment, a buffer guide slope is provided between the first limiting part and the second limiting part. The buffer guide slope is used to provide a buffer distance and guidance for the first limiting part and the second limiting part before they enter the locked state from the unlocked state.

[0008] In an optional embodiment, a second return spring is further included for providing the active unlocking structure with a kinetic force in the direction from the unlocked position to the locked position.

[0009] In an optional embodiment, the stop portion is provided with a stop surface on the side facing the open position of the switch handle to restrict the switch handle from closing, and the stop portion is provided with an inclined surface on the side facing the closed position of the switch handle to allow the switch handle to open. The limiting arm also has a third position by swinging, and the third position is located between the first position and the second position. When the switch handle moves to open, the limiting arm can swing from the first position to the third position through the inclined surface. When the limiting arm is in the third position, the active trigger is in a position other than the second trigger position.

[0010] In an optional embodiment, the active unlocking structure is provided with a mounting groove, and the second reset spring is disposed in the mounting groove.

[0011] In an optional embodiment, the release lever is bent at the edge corresponding to the linkage.

[0012] In an optional embodiment, a first reset spring is further included for providing the active trigger with a moving force in the direction from the second trigger position to the first trigger position.

[0013] Secondly, this utility model provides a switch, including the switch locking and unlocking mechanism described in any of the foregoing embodiments.

[0014] Compared with the prior art, the technical advantages of the switch locking and unlocking mechanism and switch provided by this utility model are as follows: The switch locking and unlocking mechanism provided by this utility model includes: a limiting swing arm, a movable trigger, and a switch handle; a stop is provided on the limiting swing arm; the movable trigger can reciprocate between a first trigger position and a second trigger position, and the movable trigger is tractively connected to the limiting swing arm; when the movable trigger is in the first trigger position, the limiting swing arm is in the first position, and the stop is located on the opening and closing movement path of the switch handle to limit the closing of the switch handle; when the movable trigger is in the second trigger position, the limiting swing arm is in the second position, and the stop is located outside the opening and closing movement path of the switch handle so that the switch handle can close.

[0015] When the switch handle is in the open position, the movable trigger is in the first trigger position, the limit arm is in the first position, and the stop is located on the opening and closing movement path of the switch handle to limit the switch handle and restrict the switch handle from closing, preventing closing without meeting the closing conditions. If you want to close the switch, you need to move the movable trigger from the first trigger position to the second trigger position, which will drive the limit arm to swing from the first position to the second position. At this time, the stop is located outside the opening and closing movement path of the switch handle, thereby releasing the limit on the switch handle. Then, close the switch handle, which effectively improves the safety of the power supply system.

[0016] The switch provided by this utility model includes the aforementioned switch locking and unlocking mechanism. Therefore, the technical advantages and effects achieved by this switch include those achieved by the aforementioned switch locking and unlocking mechanism, which will not be elaborated here.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the switch structure provided in an embodiment of this utility model; Figure 2 A schematic diagram of the structure of the active triggering element in the first triggering position and the switch handle in the open position according to an embodiment of the present utility model; Figure 3 A schematic diagram of the structure of the active triggering element in the second triggering position and the switch handle in the open position according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the active triggering element in the first triggering position and the switch handle in the closed position, as provided in the embodiment of this utility model.

[0020] Icons: 1-Limiting swing arm; 2-Stop part; 3-Active trigger; 4-Switch handle; 5-Limiting groove; 6-Unlocking part; 7-Mounting groove; 8-Trigger lever; 9-Linking part; 10-Buffer guide slope; 11-Second return spring; 12-Stop straight surface; 13-Slope; 14-First return spring; 15-Intermediate hole; 16-Fixed shaft; 17-Oval hole; 18-Bend; 19-Long groove; 20-Protrusion; 21-Guide shaft; 22-Fixed hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0026] The specific structure is as follows: Figures 1 to 4 As shown.

[0027] This embodiment provides a switch locking and unlocking mechanism, including: a limiting swing arm 1, a movable trigger 3, and a switch handle 4; the limiting swing arm 1 is provided with a stop part 2; the movable trigger 3 can reciprocate between a first trigger position and a second trigger position, and the movable trigger 3 is tractively connected to the limiting swing arm 1; when the movable trigger 3 is in the first trigger position, the limiting swing arm 1 is in the first position, and the stop part 2 is located on the opening and closing movement path of the switch handle 4 to restrict the switch handle 4 from closing; when the movable trigger 3 is in the second trigger position, the limiting swing arm 1 is in the second position, and the stop part 2 is located outside the opening and closing movement path of the switch handle 4 so that the switch handle 4 can close.

[0028] In this embodiment, when the switch handle 4 is in the open position, the movable trigger 3 is in the first trigger position, the limiting arm 1 is in the first position, and the stop part 2 is located on the opening and closing movement path of the switch handle 4 to limit the switch handle 4, restricting the switch handle 4 from closing and preventing closing without meeting the closing conditions. If you want to close the switch, you need to move the movable trigger 3 from the first trigger position to the second trigger position, which will drive the limiting arm 1 to swing from the first position to the second position. At this time, the stop part 2 is located outside the opening and closing movement path of the switch handle 4, thereby releasing the limitation on the switch handle 4. Then the switch handle 4 can be closed, which effectively improves the safety of the power supply system.

[0029] In this embodiment, the movement of the active trigger 3 drives the limit arm 1 to swing, causing the stop part 2 to lock and unlock the switch handle 4. The structure is simple and easy to use.

[0030] In the optional technical solution of this embodiment, a movable unlocking structure is also included. The movable unlocking structure has an unlocking position and a locking position. The movable unlocking structure is provided with a first limiting part and an unlocking part 6. The movable trigger 3 is provided with a second limiting part that cooperates with the first limiting part. The unlocking part 6 is located on the opening and closing movement path of the switch handle 4. When the switch handle 4 is closed, the movable unlocking structure can be switched from the locking position to the unlocking position through the unlocking part 6. When the movable trigger 3 is in the first triggering position, the movable unlocking structure is in the unlocking position. The first limiting part and the second limiting part are separated and in the unlocked state, so that the movable trigger 3 can move in the direction from the first triggering position to the second triggering position, thereby driving the limiting swing arm 1 to swing in the direction from the first position to the second position. When the movable trigger 3 is in the second triggering position, the movable unlocking structure is in the locking position. The first limiting part and the second limiting part are connected and in the locked state, so as to restrict the movement of the movable trigger 3 in the direction from the second triggering position to the first triggering position, thereby restricting the swing of the limiting swing arm 1 in the direction from the second position to the first position.

[0031] In this embodiment, the stop part 2 is located near the open position of the switch handle 4, which can limit the switch handle 4 to the open position. The unlocking part 6 is located near the closed position of the switch handle 4, which can switch the movable unlocking structure from the locked position to the unlocked position when the switch handle 4 is closed. Specifically, when the active trigger 3 moves from the first trigger position to the second trigger position, the active unlocking structure switches from the unlock position to the locked position. The first limit part and the second limit part change from the separated unlocked state to the connected locked state. The active trigger 3 is locked by the active unlocking structure, keeping the active trigger 3 in the second trigger position, thereby keeping the limit swing arm 1 in the second position. At this time, the main switch can be closed. During the closing process, the switch handle 4 moves from the open position to the closed position and passes through the unlocking part 6. The switch handle 4 drives the unlocking part 6 to move, thereby switching the active unlocking structure from the locked position to the unlock position. At this time, the active trigger 3 can be moved from the second trigger position to the first trigger position, thereby driving the limit swing arm 1 to swing from the second position to the first position. When the switch handle 4 is in the closed position, the active unlocking structure is always kept in the unlocked position through the unlocking part 6. Since the active trigger 3 is unlocked after the switch handle 4 is in the closed position, it is ensured that the active trigger 3 is kept in the second trigger position before the switch handle 4 is in the closed position, avoiding interference from the stop part 2 of the limit swing arm 1 to the switch handle 4 during the closing movement.

[0032] In this embodiment, the first limiting part can be a limiting groove 5 and the second limiting part can be a limiting protrusion; or the first limiting part can be a limiting protrusion and the second limiting part can be a limiting groove 5.

[0033] In the optional technical solution of this embodiment, the active unlocking structure includes a release lever 8 and a linkage 9; one end of the release lever 8 forms an unlocking part 6, and the other end is connected to the linkage 9; a first limiting part is provided on the linkage 9.

[0034] In this embodiment, a central hole 15 is provided in the middle of the release lever 8, and the central hole 15 is connected to a fixed shaft 16. The release lever 8 swings through the fixed shaft 16. A waist-shaped hole 17 is provided at the end of the release lever 8 that is connected to the linkage 9. The release lever 8 is provided with a guide shaft 21, which is located in the waist-shaped hole 17. The release lever 8 is connected to the linkage 9 through the waist-shaped hole 17 and the guide shaft 21. The shape of the waist-shaped hole 17 provides space for the rotation of the release lever 8. A bend 18 is provided at the edge of the corresponding linkage 9 of the release lever 8 to reduce space occupation.

[0035] In this embodiment, one end of the limiting arm 1 has a long groove 19, and the movable trigger 3 is provided with a protrusion 20 located in the long groove. The limiting arm 1 and the movable trigger 3 are connected by transmission through the protrusion 20 and the long groove 19. The limiting arm 1 is fixedly connected to the switch through the fixing hole 22 at the other end, and the limiting arm 1 can rotate around the fixing hole 22.

[0036] In the optional technical solution of this embodiment, a buffer guide slope 10 is provided between the first limiting part and the second limiting part. The buffer guide slope 10 is used to provide a buffer distance and guidance for the first limiting part and the second limiting part before they enter the locked state from the unlocked state. This allows the first limiting part and the second limiting part to pass through a buffer distance before entering the locked state, preventing direct switching. Simultaneously, the guiding effect prevents switching jams and ensures the stability of the switching.

[0037] In the optional technical solution of this embodiment, a second return spring 11 is also included for providing the active unlocking structure with a moving force in the direction from the unlocked position to the locked position.

[0038] In this embodiment, the first limiting part is a limiting groove 5, and the second limiting part is a limiting protrusion. When the limiting arm 1 is not in the first position or the second position, the limiting protrusion can abut against the buffer guide slope 10, so that the second return spring 11 is in a compressed state. When the limiting arm 1 is in the second position, the second return spring 11 can drive the movable unlocking structure to move from the unlocking position to the locking position. The overall structure is simple, the movable unlocking structure is easy to drive, and the stability is high.

[0039] Specifically, the linkage 9 is provided with a mounting groove 7, and the second reset spring 11 is provided in the mounting groove 7 to provide the linkage 9 with a force in the opposite direction to the direction in which the trip lever 8 drives the linkage 9 to move.

[0040] In the optional technical solution of this embodiment, the stop part 2 is provided with a stop surface 12 for limiting the closing of the switch handle 4 on the side facing the open position of the switch handle 4, and an inclined surface 13 for enabling the switch handle 4 to open is provided on the side facing the closed position of the switch handle 4; the limiting swing arm 1 also has a third position by swinging, and the third position is located between the first position and the second position. When the switch handle 4 moves to open, the limiting swing arm 1 can swing from the first position to the third position through the inclined surface 13; when the limiting swing arm 1 is in the third position, the active trigger 3 is in a non-second trigger position.

[0041] In this embodiment, when the switch handle 4 is in the open position, the stop surface 12 limits the switch handle 4 to prevent it from moving towards the open position, thus achieving a good limiting effect. When the switch handle 4 is in the opening process, before moving from the opening position to the closing position, the switch handle 4 passes through the stop part 2 and contacts the inclined surface 13 of the stop part 2. After the switch handle 4 contacts the inclined surface 13, if the opening continues, the switch handle 4 will push the limit swing arm 1 to swing through the inclined surface 13 and exit the opening and closing movement path of the switch handle 4 to avoid affecting the opening of the switch handle 4. At the same time, the farthest position pushed by the switch handle 4 to swing the limit swing arm 1 through the contact of the switch handle 4 with the inclined surface 13 is the third position. When the limit swing arm 1 is in the third position, the movable trigger 3 will not move from the first trigger position to the second trigger position. The movable unlocking structure is always in the unlocking position, and the first limit part and the second limit part are in the unlocked state. At this time, the limit swing arm 1 can swing along the direction from the second position to the first position. When the switch handle 4 moves to the opening position, the movable trigger 3 can drive the limit swing arm 1 to swing along the direction from the second position to the first position, so that the limit swing arm 1 is in the first position, and the stop part 2 continues to limit the switch handle 4.

[0042] In the optional technical solution of this embodiment, a first reset spring 14 is also included for providing the active trigger 3 with a moving force in the direction from the second trigger position to the first trigger position.

[0043] In this embodiment, when the active trigger 3 is unlocked from the locked state by the active unlocking structure, the active trigger 3 can automatically move from the second trigger position to the first trigger position through the first reset spring 14; and when the switch handle 4 is opening the circuit and driving the limit arm 1 from the first position to the third position, the first reset spring 14 is gradually compressed. When the switch handle 4 moves to the opening position, the first reset spring 14 drives the limit arm 1 from the third position to the first position through the active trigger 3. The structure is simple, the drive is stable, and the reset is convenient.

[0044] The switch provided in this embodiment includes the aforementioned switch locking and unlocking mechanism. Therefore, the technical advantages and effects achieved by the switch include those achieved by the aforementioned switch locking and unlocking mechanism, which will not be elaborated here.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A switch locking and unlocking mechanism, characterized in that, include: Limiting arm (1), movable trigger (3) and switch handle (4); The limiting swing arm (1) is provided with a stop (2); The active trigger (3) is capable of reciprocating between the first trigger position and the second trigger position, and the active trigger (3) is connected to the limiting swing arm (1) in a transmission manner. When the active trigger (3) is in the first trigger position, the limiting swing arm (1) is in the first position, and the stop part (2) is located on the opening and closing movement path of the switch handle (4) to limit the closing of the switch handle (4); When the active trigger (3) is in the second trigger position, the limiting arm (1) is in the second position, and the stop part (2) is outside the opening and closing movement path of the switch handle (4) so ​​that the switch handle (4) can close.

2. The switch locking and unlocking mechanism according to claim 1, characterized in that, It also includes an active unlocking structure, which has an unlocking position and a locking position. The active unlocking structure is provided with a first limiting part and an unlocking part (6). The active trigger (3) is provided with a second limiting part that cooperates with the first limiting part. The unlocking part (6) is located on the opening and closing movement path of the switch handle (4). When the switch handle (4) is closed, the active unlocking structure can be switched from the locking position to the unlocking position through the unlocking part (6). When the active trigger (3) is located at the first trigger position, the active unlocking structure is located at the unlocking position, and the first limiting part and the second limiting part are separated and in the unlocked state, so that the active trigger (3) can move along the direction from the first trigger position to the second trigger position, thereby driving the limiting arm (1) to swing along the direction from the first position to the second position. When the active trigger (3) is in the second trigger position, the active unlocking structure is in the locked position, and the first limiting part and the second limiting part are connected and locked to restrict the active trigger (3) from moving in the direction from the second trigger position to the first trigger position, thereby restricting the movement of the limiting arm (1) in the direction from the second position to the first position. The active unlocking structure includes a release lever (8) and a linkage (9); One end of the release lever (8) forms the unlocking part (6), and the other end is connected to the linkage (9). The first limiting part is provided on the linkage component (9).

3. The switch locking and unlocking mechanism according to claim 1, characterized in that, The limiting arm (1) is provided with a long groove (19), the movable trigger (3) is provided with a protrusion (20), and the movable trigger (3) is connected to the long groove (19) on the limiting arm (1) through the protrusion (20).

4. The switch locking and unlocking mechanism according to claim 2, characterized in that, A buffer guide slope (10) is provided between the first limiting part and the second limiting part. The buffer guide slope (10) is used to provide a buffer distance and guidance for the first limiting part and the second limiting part before they enter the locked state from the unlocked state.

5. The switch locking and unlocking mechanism according to claim 2, characterized in that, It also includes a second return spring (11) for providing a force to the active unlocking structure in the direction from the unlocked position to the locked position.

6. The switch locking and unlocking mechanism according to claim 1, characterized in that, The stop part (2) is provided with a stop surface (12) for limiting the closing of the switch handle (4) on the side facing the open position of the switch handle (4), and an inclined surface (13) for enabling the switch handle (4) to open on the side facing the closed position of the switch handle (4). The limiting arm (1) also has a third position by swinging, and the third position is located between the first position and the second position. When the switch handle (4) moves to open the circuit, the limiting arm (1) can swing from the first position to the third position through the inclined surface (13). When the limiting arm (1) is in the third position, the active trigger (3) is in a position other than the second trigger position.

7. The switch locking and unlocking mechanism according to claim 5, characterized in that, The active unlocking structure is provided with a mounting groove (7), and the second reset spring (11) is disposed in the mounting groove (7).

8. The switch locking and unlocking mechanism according to claim 2, characterized in that, The release lever (8) has a bend (18) at the edge corresponding to the linkage (9).

9. The switch locking and unlocking mechanism according to claim 1, characterized in that, It also includes a first return spring (14) for providing the active trigger (3) with a moving force in the direction from the second trigger position to the first trigger position.

10. A switch, characterized in that, Includes the switch locking and unlocking mechanism as described in any one of claims 1-9.

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