Self-locking mechanism of circuit breaker

Abstract

The utility model discloses a self-locking mechanism of a circuit breaker. The problem that a locking plate of a circuit breaker is positioned only through a gear groove and is not stable enough is mainly solved. The device is characterized by further comprising a locking plate (5) which is installed on the shell in a lifting mode and comprises a locking position in blocking fit with the linkage rod so that the linkage rod cannot rotate and an unlocking position separated from the linkage rod; a positioning block (51) is arranged on the lock plate; the sliding plate (6) is installed on the shell in a sliding mode in the horizontal direction, and when the lock plate is located at the locking position, the sliding plate is matched with the positioning block to be used for limiting the lock plate. According to the self-locking mechanism of the circuit breaker provided by the utility model, the locking plate can be locked through the sliding plate after being pulled up, so that misoperation is prevented, and the use is more stable.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, specifically to a self-locking mechanism for a circuit breaker. Background Technology

[0002] As shown in Chinese patent CN 216849816 U, circuit breakers are equipped with locking plates during maintenance to prevent accidental closing. Conventional locking plates are positioned solely by the slot, which is not stable enough. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a self-locking mechanism for a circuit breaker, which mainly solves the problem that the locking plate of the circuit breaker is not stable enough because it is only positioned by the stop slot.

[0004] The technical solution of this utility model is as follows:

[0005] A self-locking mechanism for a circuit breaker includes a housing, within which a power source, a gear transmission mechanism, and a linkage rod are disposed. The power source drives the linkage rod to rotate via the gear transmission mechanism. The mechanism also includes...

[0006] A locking plate, which is liftably mounted on the housing, includes a locking position that cooperates with the linkage rod to prevent it from rotating and an unlocking position that is separated from the linkage rod; the locking plate is provided with a positioning block;

[0007] The sliding plate is slidably mounted on the housing in a horizontal direction and cooperates with the positioning block to limit the locking plate when the locking plate is in the locked position.

[0008] The housing is provided with a first opening groove, and at least part of the locking plate is movably installed in the first opening groove.

[0009] The housing is provided with a sliding groove, the sliding plate slides in the sliding groove, and the sliding groove communicates with the first opening groove.

[0010] The housing is provided with a second opening groove, which is located above and communicates with the slide groove. The slide plate is provided with a boss, which is located inside the second opening groove.

[0011] The housing is provided with a support, the support is provided with a stop block, and the locking plate is provided with a stop groove that cooperates with the stop block.

[0012] The locking plate is provided with a baffle that cooperates with the linkage rod.

[0013] The locking plate is provided with adjacent deformation grooves and elastic arms, and the gear slot is provided on the elastic arm.

[0014] The bottom of the slide is provided with a guide groove, and the slide plate is provided with a guide block that cooperates with the guide groove.

[0015] The boss has two protrusions.

[0016] The beneficial effects of this utility model are: This utility model provides a self-locking mechanism for a circuit breaker, which can be locked by a sliding plate after the locking plate is pulled up, preventing accidental operation and making the use more stable. Attached Figure Description

[0017] Figure 1 This is an internal perspective view of one embodiment of the present utility model.

[0018] Figure 2 This is a partial perspective view of one embodiment of the present invention.

[0019] Figure 3 This is a perspective view of the lock plate and the slide plate according to one embodiment of the present utility model.

[0020] Figure 4 This is a partial perspective view of one embodiment of the present invention.

[0021] Figure 5 This is a partial structural diagram of one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. A self-locking mechanism for a circuit breaker includes a housing 1, a power source 2, a gear transmission mechanism 3, and a linkage rod 4 inside the housing. The power source drives the linkage rod to rotate through the gear transmission mechanism. The device also includes a locking plate 5, which is vertically and vertically mounted on the housing. The locking plate includes a locked position that cooperates with the linkage rod to prevent it from rotating and an unlocked position that is separated from the linkage rod. The locking plate is provided with a positioning block 51. A sliding plate 6 is slidably mounted on the housing in the horizontal direction and cooperates with the positioning block to limit the locking plate when the locking plate is in the locked position. When locking is required, the locking plate is pulled up. The bottom of the locking plate engages with the linkage rod to prevent the linkage rod from rotating. This part is existing technology. In this application, after the locking plate is pulled up, the sliding plate is pushed to engage with the positioning block on the locking plate to fix the locking plate and prevent it from descending. This is much more robust than relying solely on the stop groove for limiting. A sliding groove can be set in the horizontal direction of the upper wall of the housing. The top cover is not shown in the figure. The top cover can be symmetrically set with sliding grooves, and the locking plate moves within the sliding groove.

[0023] In this embodiment, as shown in the figure, the housing is provided with a first opening groove 11, and at least part of the locking plate is movably installed in the first opening groove. The first opening groove is used for the locking plate to move up and down.

[0024] In this embodiment, as shown in the figure, the housing is provided with a sliding groove 12, and the sliding plate slides in conjunction with the sliding groove. The sliding groove communicates with the first opening groove. The sliding plate moves within the sliding groove, and when the locking plate is in the locked position, it moves below the positioning block to prevent the locking plate from moving downward.

[0025] In this embodiment, as shown in the figure, the housing is provided with a second opening groove 13, which is located above and communicates with the slide groove. The slide plate is provided with a boss 61, which is located within the second opening groove. The boss facilitates operation by allowing finger movements.

[0026] In this embodiment, as shown in the figure, a support 14 is provided inside the housing, a stop block 141 is provided on the support, and a stop groove 54 that cooperates with the stop block is provided on the locking plate.

[0027] In this embodiment, as shown in the figure, the locking plate is provided with a stop that cooperates with the linkage rod. This stop is used to limit the linkage rod when it is in the locked position.

[0028] In this embodiment, as shown in the figure, the locking plate is provided with adjacent deformation grooves 52 and elastic arms 53, and the gear slot is provided on the elastic arm. Deformation can occur, facilitating gear switching.

[0029] In this embodiment, as shown in the figure, a guide groove 122 is provided at the bottom of the slide, and a guide block 66 that cooperates with the guide groove is provided on the slide plate. This further increases the stability during sliding.

[0030] In this embodiment, as shown in the figure, there are two bosses.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A self-locking mechanism for a circuit breaker, comprising a housing (1), wherein a power source (2), a gear transmission mechanism (3), and a linkage rod (4) are disposed within the housing, the power source driving the linkage rod to rotate via the gear transmission mechanism, characterized in that: Also includes The locking plate (5) is mounted on the housing in a height-adjustable manner. It includes a locking position that cooperates with the linkage rod to prevent it from rotating and an unlocking position that is separated from the linkage rod. The locking plate is provided with a positioning block (51). The slide plate (6) is slidably mounted on the housing in the horizontal direction and cooperates with the positioning block to limit the locking plate when the locking plate is in the locked position.

2. The self-locking mechanism of a circuit breaker according to claim 1, characterized in that: The housing is provided with a first opening groove (11), and at least part of the locking plate is movably installed in the first opening groove.

3. The self-locking mechanism of a circuit breaker according to claim 2, characterized in that: The housing is provided with a sliding groove (12), the sliding plate slides in cooperation with the sliding groove, and the sliding groove is connected to the first opening groove.

4. The self-locking mechanism of a circuit breaker according to claim 3, characterized in that: The housing is provided with a second opening groove (13), which is located above the slide groove and communicates with it. The slide plate is provided with a boss (61), which is located inside the second opening groove.

5. The self-locking mechanism of a circuit breaker according to claim 4, characterized in that: The housing is provided with a support (14), the support is provided with a stop block (141), and the lock plate is provided with a stop groove (54) that cooperates with the stop block.

6. The self-locking mechanism of a circuit breaker according to claim 5, characterized in that: The locking plate is provided with a baffle that cooperates with the linkage rod.

7. The self-locking mechanism of a circuit breaker according to claim 6, characterized in that: The locking plate is provided with adjacent deformation grooves (52) and elastic arms (53), and the gear slot is provided on the elastic arm.

8. The self-locking mechanism of a circuit breaker according to claim 7, characterized in that: The bottom of the slide is provided with a guide groove (122), and the slide plate is provided with a guide block (66) that cooperates with the guide groove.

9. The self-locking mechanism of a circuit breaker according to claim 4, characterized in that: The boss has two protrusions.

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