Switch cabinet drawer side lock hand-pull propulsion mechanism

Abstract

The utility model discloses a switch cabinet drawer side lock hand-pull propulsion mechanism, which is used for a drawer to enter and exit into a switch cabinet, the switch cabinet comprises a bottom support plate, and the drawer is arranged on the bottom support plate; the drawer locking device further comprises a locking assembly, the locking assembly comprises an unlocking piece, a locking rod and a positioning plate, the unlocking piece and the locking rod are arranged on the drawer, the positioning plate is arranged on the bottom supporting plate, a plurality of grooves used for containing the locking rod are formed in the positioning plate, and the grooves are formed in the same side of the positioning plate. And the opening is communicated with the side edge of the positioning plate. According to the utility model, the locking assemblies respectively arranged on the drawer and the bottom supporting plate are adopted, a plurality of locking point positions are arranged, the position of the drawer can be accurately locked in the push-in and pull-out actions of the drawer, and the locking assemblies are independent of a connecting structure between the drawer and the switch cabinet and are not influenced by the heavy self-weight of the drawer, so that the service life is effectively ensured, and the safety of the switch cabinet is improved. And an accurate locking position is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage switch cabinets and relates to a hand-pulled push-in mechanism for the side lock of a switch cabinet drawer. Background Art

[0002] In low-voltage switchgear, a large number of high-current components are loaded on the drawers in the switch cabinet to form an integrated multi-functional working unit, which is an important component in the switch cabinet.

[0003] In the current operation of switch cabinets, the drawers have multiple working positions in the switch cabinet to adapt to different test operations. Due to the high precision requirements for the connection of high-current equipment, when users push and pull the drawers in and out of the switch cabinet, they have very high requirements for grasping the position of the drawers. However, due to the large number of components, the weight of the drawers is generally around dozens of kilograms. The control of the drawers by users will be affected by various factors, such as the influence of self-weight on the connection locking structure, inertia caused by excessive self-weight, etc. Moreover, ordinary connection locking structures are difficult to bear heavy loads and are prone to problems such as deformation and tooth skipping, and thread disengagement and damage during long-term use. All these lead to the inability of users to accurately control the position of the drawers and the inability to obtain accurate position information during operation. Summary of the Utility Model

[0004] The utility model aims to overcome the deficiencies of the prior art and provides a hand-pulled push-in mechanism for the side lock of a switch cabinet drawer.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hand-pulled push-in mechanism for the side lock of a switch cabinet drawer is used for the entry and exit of the drawer into the switch cabinet. The switch cabinet includes a bottom support plate, and the drawer is arranged on the bottom support plate; it further includes a locking component, and the locking component includes an unlocking piece, a locking rod arranged on the drawer, and a positioning plate arranged on the bottom support plate. A plurality of grooves for accommodating the locking rod are arranged on the positioning plate. The grooves are respectively arranged on the same side of the positioning plate and are open and communicate with the side of the positioning plate. The unlocking piece is connected to the locking rod, and the movement of the unlocking piece drives the locking rod to enter / exit the groove.

[0007] Furthermore, an unlocking fixed bracket is arranged on the drawer. The unlocking piece passes through the unlocking fixed bracket. A sliding groove for the locking rod to pass through is arranged on the unlocking piece. Limiting grooves are respectively arranged on the unlocking fixed bracket and the bottom of the drawer. Both ends of the locking rod pass through the limiting grooves respectively, and the sliding groove forms a set angle with the limiting groove.

[0008] Further, it further includes a first spring, both ends of the first spring are respectively connected to the unlocking piece and the unlocking fixed bracket, the movement of the unlocking piece includes an unlocking position and a locking position, and the first spring provides an elastic force tending to the locking position for the unlocking piece.

[0009] Further, a self-locking switch is provided at the front end of the drawer, and the actuating end of the self-locking switch abuts against the unlocking piece.

[0010] Further, a telescopic position display component and a plurality of microswitches are provided on the drawer, the telescopic position display component is electrically connected to the microswitches, the plurality of microswitches are sequentially arranged along the movement direction of the drawer, a sliding bracket for triggering the microswitches is slidably and cooperatively connected to the drawer, and an elastic member for resetting the sliding bracket is further provided, both ends of the elastic member are respectively connected to the sliding bracket and the drawer, and a convex platform for abutting against the sliding bracket in the movement direction of the drawer is provided on the bottom support plate.

[0011] Further, a mechanism bottom plate is provided on the drawer, a strip-shaped groove is formed in the mechanism bottom plate along the movement direction of the drawer, a limiting post is fixedly connected to the sliding bracket, one end of the limiting post is connected to the elastic member, and the other end extends towards the bottom support plate for abutting against the convex platform.

[0012] Further, the elastic member is a tension spring or a compression spring.

[0013] Further, an indicating bar is telescopically inserted into the telescopic position display component, a plurality of marks are provided on the indicating bar, and a display square groove for displaying the marks is formed on the telescopic position display component.

[0014] Further, it further includes a square rod bracket, a square rod interlocking lock plate is movably inserted through the square rod bracket, a square rod interlocking piece is connected to the square rod bracket through a rotating shaft, an arc groove is formed in the square rod interlocking piece, a sliding shaft for being inserted into the arc groove is provided at one end of the square rod interlocking lock plate, the rotation of the square rod interlocking piece drives the lifting of the square rod interlocking lock plate, and a flanging for abutting against the lower end of the square rod interlocking lock plate is provided at the front end of the bottom support plate.

[0015] In summary, the beneficial effects of the present utility model are as follows:

[0016] The present utility model adopts a locking component separately arranged on the drawer and the bottom support plate, sets a plurality of locking points, can realize accurate locking of the drawer position during the pushing and pulling movement of the drawer, and the locking component is independent of the connection structure between the drawer and the switch cabinet, is not affected by the large self-weight of the drawer, effectively guarantees the service life, and ensures an accurate locking position. Description of the Drawings

[0017] Figure 1 This is a schematic structural view of the drawer and the bottom support plate of the present utility model.

[0018] Figure 2 This is a schematic structural view of the side-lock hand-pull push mechanism.

[0019] Figure 3 This is a schematic structural view of the unlocking piece part.

[0020] Figure 4 For Figure 2 This is a schematic structural view from the bottom perspective in the middle.

[0021] Figure 5 This is a schematic structural view of the sliding bracket part.

[0022] Figure 6 This is a schematic structural view of the square rod bracket part.

[0023] Figure 7 For Figure 2 This is a schematic structural view when the elastic member in the middle is a top spring.

[0024] Identifications in the figure: 1. Drawer; 2. Bottom support plate; 21. Positioning plate; 211. Groove; 22. Boss; 31. Mechanism bottom plate; 32. Unlocking fixed bracket; 321. Unlocking piece; 322. Chute; 323. Lock rod; 324. Spring; 325. Unlocking slide plate; 33. Sliding bracket; 331. Limit post; 332. Tension spring; 333. Strip-shaped groove; 334. Top spring; 34. Square rod interlocking lock plate; 341. Square rod bracket; 342. Square rod interlocking piece; 343. Arc groove; 35. Telescopic position display component; 351. Display square groove; 352. Indicator bar. Specific embodiments

[0025] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0026] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0027] In all the directional indications (such as up, down, left, right, front, back, horizontal, vertical...) in the embodiments of the present utility model, they are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indication also changes accordingly.

[0028] Due to reasons such as installation errors, the parallel relationship referred to in the embodiments of the present utility model may actually be an approximate parallel relationship, and the vertical relationship may actually be an approximate vertical relationship.

[0029] A hand-pulled push-in mechanism for the side lock of a switch cabinet drawer is provided in the drawer 1 inside the switch cabinet. Refer to Figure 1 , the drawer 1 is arranged in the drawer slot on the switch cabinet. A bottom support plate 2 and a slide rail are arranged at the bottom of the drawer slot. The drawer 1 can translate along the slide rail on the bottom support plate 2 to achieve rocking in and out in the drawer slot. The drawer 1 has three specific position states relative to the drawer slot during the rocking-in and rocking-out processes, including a connection position, a test position, and an isolation position, and the positional relationship of the connection position, the test position, and the isolation position is arranged in sequence from the inside to the outside of the drawer slot.

[0030] The side lock hand-pulled push-in mechanism is used to accurately position the drawer 1 among the above three position states. The side lock hand-pulled push-in mechanism includes a mechanism base plate 31 arranged at the bottom of the drawer 1, and a locking component and a hand-pulled push-in display component arranged on the mechanism base plate 31.

[0031] Refer to Figure 2 and Figure 3 , the locking component includes an unlocking fixed bracket 32, an unlocking piece 321, a locking rod 323, and a spring 324. The unlocking fixed bracket 32 is fixedly installed on the mechanism base plate 31. The unlocking piece 321 is inserted into the unlocking fixed bracket 32 and can perform a translational movement along the first straight line direction. The first straight line direction is in a horizontal position. The movement of the unlocking piece 321 includes an unlocking position and a locking position. And a slot is arranged on the mechanism base plate 31 for the unlocking piece 321 to pass through, which plays a certain limiting role on the unlocking piece 321 to make its movement direction more stable. A spring 324 is arranged between the unlocking piece 321 and the unlocking fixed bracket 32. The spring 324 provides an elastic force for the unlocking piece 321 along the first straight line direction to maintain the unlocking piece 321 in the locking position when there is no other external force.

[0032] A chute 322 is vertically and penetratingly provided on the unlocking piece 321. The locking rod 323 is inserted into the chute 322. The locking rod 323 has a columnar structure. The axial direction of the locking rod 323 is vertically arranged and is perpendicular to the first straight direction. The locking rod 323 can move relatively within the chute 322. A first limiting groove is provided at the top of the unlocking fixed bracket 32. A second limiting groove is penetratingly provided on the mechanism base plate 31. The projections of the first limiting groove and the second limiting groove in the axial direction of the locking rod 323 coincide. The upper and lower ends of the locking rod 323 respectively pass through the first limiting groove and the second limiting groove. The locking rod 323 can move relatively within the first limiting groove and the second limiting groove. The setting direction of the chute 322 forms a set angle with the setting direction of the first limiting groove or the second limiting groove. Thus, when the unlocking piece 321 is translated along the first straight direction, the acting force generated by the inner wall of the chute 322 on the locking rod 323 can drive the locking rod 323 to translate along the setting direction of the first limiting groove or the second limiting groove. In this embodiment, in the unlocking position and the locking position, the locking rod 323 is respectively located at both ends in the setting direction of the first limiting groove (or the second limiting groove).

[0033] Refer to Figure 2 、 Figure 4 , a positioning plate 21 is fixedly provided on the bottom support plate 2. The positioning plate 21 is located below the locking rod 323. Three grooves 211 are provided on the positioning plate 21, and the three grooves 211 are all open and communicated with the same side edge of the positioning plate 21. The lower end of the locking rod 323 passes through the second limiting groove and extends towards the bottom support plate 2. In the unlocking position, the locking rod 323 is located on one side of the positioning plate 21. At this time, the locking rod 323 will not contact the positioning plate 21 in the moving direction of the drawer 1. In the locking position, the locking rod 323 can be located in any one of the grooves 211. At this time, the locking rod 323 is limited by the groove 211 and cannot move further in the moving direction of the drawer 1, thereby achieving the locking effect on the movement of the drawer 1. Moreover, when the locking rod 323 is respectively locked in the three grooves 211, the corresponding positions of the drawer 1 are the isolation position, the test position, and the connection position.

[0034] Further, an unlocking sliding plate 325 is also provided on the unlocking piece 321. A micro switch is provided on one side of the unlocking fixed bracket 32. During the stroke of the unlocking piece 321 driving the unlocking sliding plate 325 to move, the unlocking sliding plate 325 can trigger the micro switch. An indicator light electrically connected to the micro switch can be provided on the drawer 1 to indicate the current unlocking position or locking position.

[0035] Further, a self-locking switch is provided at the front end of the drawer 1. The inner side of the self-locking switch abuts against the front end of the unlocking piece 321. When the self-locking switch is pressed, the self-locking switch pushes the unlocking piece 321 inward to enter the unlocking position and holds the unlocking piece 321 to prevent it from returning to the locking position. At this time, when the above locking nut is locked, the drawer 1 can be pushed in and pulled out arbitrarily within the range of the isolation position, the test position, and the connection position.

[0036] During the process of pushing in and pulling out the drawer 1 within the range of the isolation position, the test position, and the connection position, press the self-locking switch again to release the unlocking piece 321 by the self-locking switch, eliminating the reset locking of the unlocking piece 321. When the drawer 1 moves to any one of the isolation position, the test position, and the connection position, the vacancy generated by the corresponding groove 211 on the positioning plate 21 in the moving stroke of the locking rod 323 enables the unlocking piece 321 to be pushed by the spring 324 to reset to the locking position, and the locking rod 323 enters the groove 211 to lock the drawer 1 with the drawer slot, realizing the accurate positioning of the drawer 1 to any required position among the isolation position, the test position, and the connection position.

[0037] When the drawer 1 moves outward from the isolation position, in order to avoid the safety risk caused by the accidental excessive extraction of the drawer 1, a square rod bracket 341 and a square rod interlocking lock plate 34 are also provided. Refer to Figure 6 , the square rod interlocking lock plate 34 is arranged on the square rod bracket 341 and passes through the mechanism bottom plate 31 downward. The square rod interlocking lock plate 34 can move up and down vertically, so that its lower end can contact the bottom support plate 2 downward. The front end of the bottom support plate 2 is provided with a raised part such as a flanging or a step. When the square rod interlocking lock plate 34 is in the downward position, the outward extraction process of the drawer 1 will cause the square rod interlocking lock plate 34 to abut against the flanging or the step forward, preventing the drawer 1 from being further extracted and ensuring safety.

[0038] A square rod interlocking piece 342 is arranged on the square rod bracket 341. The square rod interlocking piece 342 is connected to the square rod bracket 341 through a rotating shaft, enabling the square rod interlocking piece 342 to rotate relative to the square rod bracket 341 with the rotating shaft as the center of rotation. An arc groove 343 is arranged on the square rod interlocking piece 342, and the center of the arc groove 343 is offset from the center of the rotating shaft by a set distance. A sliding shaft is arranged on the square rod interlocking lock plate 34, and the sliding shaft passes through the arc groove 343. Furthermore, under the rotation action of the square rod interlocking piece 342, the relative cooperation relationship between the arc groove 343 and the sliding shaft can drive the lifting action of the square rod interlocking lock plate 34. By fixing the rotation angle of the square rod interlocking piece 342, the height position of the square rod interlocking lock plate 34 can be set.

[0039] In order to enable the user to more clearly know the current position of the drawer 1, refer to Figure 1 、 Figure 2 andFigure 5 The hand-pulled propulsion display component includes a sliding bracket 33, a limit post 331, an elastic member, and a telescopic position display component 35. The sliding bracket 33 is arranged on the mechanism base plate 31 and can move relative to the mechanism base plate 31 along the movement direction of the drawer 1. The limit post 331 is fixedly connected to the sliding bracket 33. A strip-shaped groove 333 is formed on the mechanism base plate 31 along the movement direction of the drawer 1. The bottom end of the limit post 331 passes downward through the strip-shaped groove 333 to the lower part of the mechanism base plate 31. A boss 22 is correspondingly arranged on the bottom support plate 2, and the boss 22 is located directly below the strip-shaped groove 333. The two ends of the elastic member are respectively fixed to the limit post 331 and the mechanism base plate 31.

[0040] Among them, the elastic member includes but is not limited to a tension spring 332 or a top spring 334. By arranging the tension spring 332 or the top spring 334 corresponding to the movement direction of the limit post 331, a reset function is provided for the sliding bracket 33. Refer to Figure 2 and Figure 7 .

[0041] When the drawer 1 is pushed into the drawer slot, the mechanism base plate 31 drives the movement of the sliding bracket 33 until the limit post 331 abuts against the boss 22. The boss 22 restricts the further movement of the limit post 331 and the sliding bracket 33. Therefore, when the mechanism base plate 31 moves further in, the sliding bracket 33 moves relative to the mechanism base plate 31, and the tension spring 332 is stretched or the top spring 334 is compressed; conversely, when the drawer 1 is pulled out, the resilience of the tension spring 332 or the top spring 334 pulls or pushes the sliding bracket 33 to move and reset relative to the mechanism base plate 31, and when pulled out further, the limit post 331 disengages from the boss 22.

[0042] The telescopic position display component 35 is arranged at the front end of the mechanism base plate 31. An indicating strip 352 is inserted in the telescopic position display component 35. The indicating strip 352 can perform a telescopic action relative to the telescopic position display component 35 along the length direction. Three markings respectively used to represent the isolation position, the test position, and the connection position are sequentially arranged on the indicating strip 352 along the length direction. A display square groove 351 is formed on the telescopic position display component 35. During the relative telescoping of the indicating strip 352, the three markings can all move to a position directly opposite the display square groove 351. Three microswitches are sequentially arranged on the mechanism base plate 31, and all three microswitches are electrically connected to the telescopic position display component 35. When the drawer 1 moves to the isolation position, the test position, and the connection position respectively, the relative movement of the sliding bracket 33 will respectively trigger the three microswitches, thereby respectively triggering the telescopic position display component 35 to drive the indicating strip 352 to perform corresponding telescopic actions, so as to respectively display the corresponding markings in the display square groove 351 for the user to view.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A hand-pulled push-in mechanism for the side lock of a switchgear drawer, used for the entry and exit of the drawer (1) into the switchgear, characterized in that The switch cabinet includes a bottom support plate (2), and the drawer (1) is arranged on the bottom support plate (2); it further includes a locking component, the locking component includes an unlocking piece (321) arranged on the drawer (1), a locking rod (323), and a positioning plate (21) arranged on the bottom support plate (2). A plurality of grooves (211) for accommodating the locking rod (323) are arranged on the positioning plate (21). The grooves (211) are respectively arranged on the same side of the positioning plate (21) and are open and communicated with the side of the positioning plate (21). The unlocking piece (321) is connected to the locking rod (323), and the movement of the unlocking piece (321) drives the locking rod (323) to enter / exit the groove (211).

2. The hand-pulled and pushed mechanism for the drawer side lock of a switch cabinet according to claim 1, characterized in that, An unlocking fixing bracket (32) is arranged on the drawer (1). The unlocking piece (321) passes through the unlocking fixing bracket (32). A sliding groove (322) for the locking rod (323) to pass through is arranged on the unlocking piece (321). Limiting grooves are arranged at the bottom of both the unlocking fixing bracket (32) and the drawer (1). Both ends of the locking rod (323) respectively pass through the limiting grooves, and the sliding groove (322) forms a set angle with the limiting groove.

3. The hand-pulled and pushed mechanism for the drawer side lock of a switch cabinet according to claim 2, wherein It further includes a first spring (324). Both ends of the first spring (324) are respectively connected to the unlocking piece (321) and the unlocking fixing bracket (32). The movement of the unlocking piece (321) includes an unlocking position and a locking position. The first spring (324) provides an elastic force to the unlocking piece (321) towards the locking position.

4. The hand-pulled and pushed mechanism for the drawer side lock of a switch cabinet according to claim 3, wherein A self-locking switch is arranged at the front end of the drawer (1), and the operating end of the self-locking switch abuts against the unlocking piece (321).

5. A hand-pulled and pushed drawer side lock mechanism for a switch cabinet according to claim 1, characterized in that, A telescopic position display component (35) and a plurality of microswitches are arranged on the drawer (1). The telescopic position display component (35) is electrically connected to the microswitches. The plurality of microswitches are arranged in sequence along the movement direction of the drawer (1). A sliding bracket (33) for triggering the microswitches is slidably and cooperatively connected to the drawer (1). An elastic member for resetting the sliding bracket (33) is also arranged. Both ends of the elastic member are respectively connected to the sliding bracket (33) and the drawer (1). A convex platform (22) for abutting against the sliding bracket (33) in the movement direction of the drawer (1) is arranged on the bottom support plate (2).

6. A hand-pulled and pushed drawer side lock mechanism for a switch cabinet according to claim 5, characterized in that, A mechanism bottom plate (31) is arranged on the drawer (1). A strip-shaped groove (333) is arranged on the mechanism bottom plate (31) along the movement direction of the drawer (1). A limiting column (331) is fixedly connected to the sliding bracket (33). One end of the limiting column (331) is connected to the elastic member, and the other end extends towards the bottom support plate (2) for abutting against the convex platform (22).

7. A hand-pulled and pushed drawer side lock mechanism for a switch cabinet according to claim 6, characterized in that, The elastic member is a tension spring (332) or a compression spring (334).

8. A hand-pulled and pushed drawer side lock mechanism for a switch cabinet according to claim 6, characterized in that, A indicating bar (352) is telescopically disposed within the telescopic position display component (35). A plurality of identifiers are provided on the indicating bar (352), and a display slot (351) for displaying the identifiers is formed on the telescopic position display component (35).

9. A hand-pulled and pushed drawer side lock mechanism for a switch cabinet according to claim 1, characterized in that It further includes a square rod bracket (341). A square rod interlocking lock plate (34) is movably disposed through the square rod bracket (341). A square rod interlocking piece (342) is connected to the square rod bracket (341) through a rotating shaft. An arc groove (343) is formed on the square rod interlocking piece (342). One end of the square rod interlocking lock plate (34) is provided with a sliding shaft for being disposed within the arc groove (343). The rotation of the square rod interlocking piece (342) drives the lifting of the square rod interlocking lock plate (34). A flanging for abutting against the lower end of the square rod interlocking lock plate (34) is provided at the front end of the bottom support plate (2).

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