A drawer seat locking device for a drawer type frame circuit breaker

Abstract

The utility model relates to circuit breaker technical field especially, it relates to a drawer seat locking device of drawer type frame circuit breaker, the utility model provides a drawer seat locking device of drawer type frame circuit breaker, it mainly comprises drawer seat side plate, lock box, back lining plate, inner lining plate, lining piece, gasket, lock cylinder, outer nut, plastic cover, straight rod, L shape connecting rod, short pole, lock tongue and gear and so on, each part cooperates and matches, when lock tongue is in locking position, lock tongue and the notch of gear are close and can interfere, when the drawer seat body is shaken in at this time, the gear is forced to stop when rotating to lock tongue interference, plays the role of preventing shaking in when locking, when shaking in and shaking out, in addition to the circuit breaker body can be locked when being in the separation position, still can lock the circuit breaker body when being in the test position, the installation position of lock box is set at the front end near drawer seat side plate one side, like this can avoid the hand jamming phenomenon when using the key.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a drawer seat locking device for a drawer-type frame circuit breaker. Background Technology

[0002] In drawer-type frame circuit breakers, the drawer-type locking device primarily plays the following core roles: 1) Position locking and status maintenance: The locking device mechanically locks the circuit breaker body in each working position (connected position, test position, disconnected position) to prevent accidental sliding or disengagement during operation. This locking ensures the circuit breaker remains stable in the designated position, avoiding the risk of poor contact or arcing. 2) Forced interlocking and operational safety: The device is linked to the circuit breaker operating mechanism, allowing closing operations only in the "connected" or "test" position, and prohibiting closing in intermediate transition positions (such as during movement). This interlocking mechanism fundamentally eliminates the dangerous operation of inserting or closing under load or in the wrong position, protecting equipment and personnel safety. 3) Precise position indication and isolation: Combined with position indicators (such as indicators or signs), the locking device can clearly identify the current working position (connected / tested / disconnected). In the test position, the locking device ensures that the main circuit is physically isolated by the insulating partition, with only the secondary circuit connected, allowing for safe functional testing; in the disconnect position, all electrical connections are completely disconnected.

[0003] The drawer locking device of the traditional drawer-type frame circuit breaker has some shortcomings in use. First, when it is rocked in or out, it can only lock the circuit breaker body in the separated position, and cannot lock the circuit breaker body in the test position. Second, the installation position of the lock box is not reasonable, and it is easy to get your hand stuck when using the key, making it inconvenient to operate.

[0004] Therefore, it is necessary to optimize and improve the drawer seat locking device of traditional drawer-type frame circuit breakers. Summary of the Invention

[0005] The purpose of this utility model is to overcome the above-mentioned problems existing in the traditional technology and provide a drawer seat locking device for a drawer-type frame circuit breaker.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A drawer seat locking device for a drawer-type frame circuit breaker includes a drawer seat side plate, a lock box, a rear liner, an inner liner, a liner, a gasket, a lock cylinder, an outer nut, a plastic sleeve, a straight rod, an L-shaped connecting rod, a short rod, a locking tongue, and a gear.

[0008] The lock box is fastened to one side of the drawer seat side panel near the front end by fasteners. An inner lining plate is inserted into and welded to the inside of the lock box. The lining plate is placed concentrically with the lock hole of the lock box and welded to the inside of the lock hole. A plastic sleeve is embedded in the lock hole of the lock box. The lock cylinder passes through the plastic sleeve and is fixed to the inner lining plate by a washer and an outer nut. A lock shaft is fitted onto the lock cylinder and fixed to the lock shaft by a flower washer and an inner nut. The lock shaft is composed of a straight rod, an L-shaped connecting rod, a short rod, and a lock tongue welded together. The rear lining plate is fixed to the back of the lock box by cross bolts. The short rod of the lock shaft is provided with rotational support by the rear lining plate. A gear is movably supported on the other side of the drawer seat side panel. The gear has a slot that facilitates collision with the lock tongue for limiting locking.

[0009] Furthermore, in the drawer seat locking device of the above-mentioned drawer-type frame circuit breaker, all components of the locking shaft are metal parts with electroplating anti-corrosion treatment on their surfaces.

[0010] Furthermore, in the drawer seat locking device of the above-mentioned drawer-type frame circuit breaker, the gear is an incomplete gear.

[0011] Furthermore, in the drawer seat locking device of the above-mentioned drawer-type frame circuit breaker, when the locking tongue is in the locked position, the locking tongue is close to and can interfere with the groove of the gear. At this time, when the drawer seat body is rocked in, the gear rotates to the point where the locking tongue interferes, and the gear is forcibly stopped, which plays the role of preventing rocking in when locked.

[0012] Furthermore, in the drawer seat locking device of the aforementioned drawer-type frame circuit breaker, when the key is in the unlocked position, the key cannot be pulled out, the latch hangs down into the lock box, and the drawer seat is not restricted by the latch and can be rocked.

[0013] Furthermore, in the drawer seat locking device of the above-mentioned drawer-type frame circuit breaker, when the drawer seat is in the open position and the key is in the locked position, the key can be pulled out. After being pulled out, the locking tongue is raised, and the locking tongue limits the gear, so the drawer seat cannot be swung in.

[0014] Furthermore, in the drawer seat locking device of the above-mentioned drawer-type frame circuit breaker, when the drawer seat is in the test position and the key is in the locked position, the key can be pulled out. After being pulled out, the locking tongue is raised, and the locking tongue limits the gear, so the drawer seat cannot be swung in.

[0015] Furthermore, in the drawer seat locking device of the aforementioned drawer-type frame circuit breaker, when the drawer seat is in the connected position, the key cannot be locked, the key cannot be removed, and the lock tongue cannot be raised.

[0016] The beneficial effects of this utility model are:

[0017] This utility model provides a drawer seat locking device for a drawer-type frame circuit breaker, which mainly consists of a drawer seat side plate, lock box, rear liner, inner liner, liner, gasket, lock cylinder, outer nut, plastic sleeve, straight rod, L-shaped connecting rod, short rod, lock tongue, and gear. The components work together to lock the circuit breaker body in both the outward and test positions when the device is rocked in and out. Furthermore, the lock box is positioned at the front end near the drawer seat side plate, which prevents the key from getting stuck.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing the position of the lock box in this utility model;

[0021] Figure 2 This is a top view of the lock box in this utility model;

[0022] Figure 3 This is a schematic diagram of the assembly of the gear and the locking tongue in this utility model;

[0023] Figure 4 This is a front view schematic diagram of the lock box in this utility model;

[0024] Figure 5 This is a side view of the lock box in this utility model;

[0025] In the attached diagram, the components represented by each number are as follows:

[0026] 1-Drawer seat side panel, 2-Lock box, 3-Back liner, 4-Inner liner, 5-Rinse, 6-Washer, 7-Lock cylinder, 8-Outer nut, 9-Plastic sleeve, 10-Straight rod, 11-L-shaped connecting rod, 12-Short rod, 13-Lock tongue, 14-Gear. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-5 As shown, this embodiment provides a drawer seat locking device for a drawer-type frame circuit breaker, including a drawer seat side plate 1, a lock box 2, a rear liner 3, an inner liner 4, a liner 5, a gasket 6, a lock cylinder 7, an outer nut 8, a plastic sleeve 9, a straight rod 10, an L-shaped connecting rod 11, a short rod 12, a locking tongue 13, and a gear 14.

[0029] In this embodiment, the lock box 2 is installed on one side of the drawer seat side plate 1 near the front end by fasteners. An inner liner plate 4 is inserted and welded inside the lock box 2. A liner 5 is placed concentrically with the lock hole of the lock box 2 and welded to the inside of the lock hole. A plastic sleeve 9 is embedded in the lock hole of the lock box 2. The lock cylinder 7 passes through the plastic sleeve 9 and is fixed to the inner liner plate 4 by a washer 6 and an outer nut 8. A lock shaft is fitted on the lock cylinder 7 and fixed by a flower washer and an inner nut. The lock shaft is composed of a straight rod 10, an L-shaped connecting rod 11, a short rod 12, and a lock tongue 13 welded together. The rear liner plate 3 is fixed to the back of the lock box 2 by a cross bolt. The short rod 12 of the lock shaft is provided with rotational support by the rear liner plate 3. A gear 14 is movably supported on the other side of the drawer seat side plate 1. The gear 14 has a slot that facilitates collision with the lock tongue 13 for limiting when locking.

[0030] In this embodiment, all components of the lock shaft are metal parts with electroplating anti-corrosion treatment on their surfaces.

[0031] In this embodiment, gear 14 is an incomplete gear.

[0032] In this embodiment, when the locking tongue 13 is in the locked position, the locking tongue 13 is close to and can interfere with the slot of the gear 14. When the drawer seat body is rocked in, the gear 14 rotates until it interferes with the locking tongue 13, at which point the gear 14 is forcibly stopped, thus preventing the drawer from being rocked in when locked.

[0033] In this embodiment, when the key is in the unlocked position, the key cannot be pulled out, the latch 13 hangs down into the lock box 2, and the drawer seat is not restricted by the latch 13 and can be rocked.

[0034] In this embodiment, when the drawer seat is disconnected and the key is in the locked position, the key can be pulled out. After being pulled out, the locking tongue 13 is raised, and the locking tongue 13 limits the gear 14, so the drawer seat cannot be slid in.

[0035] In this embodiment, when the drawer seat is in the test position and the key is in the locked position, the key can be pulled out. After being pulled out, the locking tongue 13 is raised, and the locking tongue 13 limits the gear 14, so the drawer seat cannot be slid in.

[0036] In this embodiment, when the drawer base is in the connected position, the key cannot be locked, the key cannot be removed, and the latch cannot be raised.

[0037] A specific application of this embodiment is as follows: This drawer seat locking device mainly consists of a drawer seat side plate 1, a lock box 2, a rear liner 3, an inner liner 4, a liner 5, a gasket 6, a lock cylinder 7, an outer nut 8, a plastic sleeve 9, a straight rod 10, an L-shaped connecting rod 11, a short rod 12, a locking tongue 13, and a gear 14. All components work together, and when it is rocked in or out, it can lock the circuit breaker body not only in the separated position but also in the test position. The lock box 2 is installed at the front end near the drawer seat side plate 1, so that the key can be prevented from getting stuck.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A drawer seat locking device for a drawer-type frame circuit breaker, characterized in that, Includes drawer seat side panel, lock box, back liner, inner liner, liner, gasket, lock cylinder, outer nut, plastic sleeve, straight rod, L-shaped connecting rod, short rod, lock tongue and gear; The lock box is fastened to one side of the drawer seat side panel near the front end by fasteners. An inner lining plate is inserted into and welded to the inside of the lock box. The lining plate is placed concentrically with the lock hole of the lock box and welded to the inside of the lock hole. A plastic sleeve is embedded in the lock hole of the lock box. The lock cylinder passes through the plastic sleeve and is fixed to the inner lining plate by a washer and an outer nut. A lock shaft is fitted onto the lock cylinder and fixed to the lock shaft by a flower washer and an inner nut. The lock shaft is composed of a straight rod, an L-shaped connecting rod, a short rod, and a lock tongue welded together. The rear lining plate is fixed to the back of the lock box by cross bolts. The short rod of the lock shaft is provided with rotational support by the rear lining plate. A gear is movably supported on the other side of the drawer seat side panel. The gear has a slot that facilitates collision with the lock tongue for limiting locking.

2. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 1, characterized in that, All components of the lock shaft are metal parts with electroplating for corrosion protection.

3. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 2, characterized in that, The gear is an incomplete gear.

4. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 3, characterized in that, When the latch is in the locked position, the latch is close to and can interfere with the slot of the gear. When the drawer body is rocked in, the gear rotates until it interferes with the latch, at which point the gear is forcibly stopped, thus preventing the drawer from being rocked in when locked.

5. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 4, characterized in that, When the key is in the unlocked position, the key cannot be removed, the latch is lowered into the lock box, and the drawer seat is not restricted by the latch and can be rocked.

6. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 5, characterized in that, When the drawer seat is in the open position and the key is in the locked position, the key can be pulled out. After being pulled out, the latch is raised and the latch limits the gear, preventing the drawer seat from being slid in.

7. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 6, characterized in that, When the drawer seat is in the test position and the key is in the locked position, the key can be pulled out. After being pulled out, the latch is raised and the latch limits the gear, preventing the drawer seat from being slid in.

8. The drawer seat locking device for a drawer-type frame circuit breaker according to claim 7, characterized in that, When the drawer seat is in the engaged position, the key cannot be locked, the key cannot be removed, and the latch cannot be raised.

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