Switch cabinet drawer side lock hand-pull propulsion mechanism

Abstract

The invention discloses a switch cabinet drawer side lock hand-pull pushing mechanism which is used for a drawer to enter and exit into a switch cabinet, the switch cabinet comprises a bottom supporting plate, and the drawer is arranged on the bottom supporting plate; the locking assembly comprises an unlocking piece and a locking rod which are arranged on the drawer, and a positioning plate which is arranged on the bottom supporting plate. The locking assemblies arranged on the drawer and the bottom supporting plate respectively 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, the locking assemblies are independent of a connecting structure between the drawer and the switch cabinet, the locking assemblies are not affected by the large dead weight of the drawer, the service life is effectively guaranteed, and the service life of the switch cabinet is prolonged. According to the drawer locking device, the accurate locking position is ensured, the microswitch and the telescopic position display assembly which are accurately and correspondingly arranged are matched, the position state is accurately identified when any point of the drawer is locked, a user can clearly obtain current position information, and user experience is friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of low-voltage switch cabinets and relates to a hand-pull propulsion mechanism for a side lock of a switch cabinet drawer. Background Art

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

[0003] In the operation of existing switch cabinets, the drawers have multiple working positions inside the switch cabinet to adapt to different testing tasks. Since the connection precision of high-current equipment is high, the user has very high requirements for the position of the drawer when pushing and pulling the drawer out of the switch cabinet. However, due to the large number of components, the weight of the drawer is generally around tens of kilograms. The user's control over the drawer will be affected by various factors, such as the impact of its own weight on the connection locking structure, the inertia caused by excessive weight, etc., and ordinary connection locking structures are difficult to bear heavy loads, and are prone to deformation, tooth jumping, thread disengagement and damage in long-term use. As a result, the user cannot accurately control the position of the drawer and cannot obtain accurate position information during operation. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a switch cabinet drawer side lock hand-pull propulsion mechanism.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A switch cabinet drawer side lock hand-pull push mechanism, used for the drawer to enter and exit the switch cabinet, the switch cabinet includes a bottom support plate, the drawer is arranged on the bottom support plate; also includes a locking assembly, the locking assembly includes an unlocking piece, a lock rod and a positioning plate arranged on the bottom support plate, the positioning plate is provided with a plurality of grooves for accommodating the lock rod, the unlocking piece is connected to the lock rod, and the action of the unlocking piece drives the lock rod to enter / disengage from the groove; a telescopic position display assembly and a plurality of micro switches are provided on the drawer, the telescopic position display assembly is electrically connected to the micro switch, and the plurality of micro switches are sequentially arranged along the movement direction of the drawer, a sliding bracket for triggering the micro switch is provided on the drawer in a sliding matching connection, and an elastic member for resetting the sliding bracket is also provided, the two ends of the elastic member are respectively connected to the sliding bracket and the drawer, a self-locking switch is provided at the front end of the drawer, the action end of the self-locking switch is connected to the unlocking piece, and a boss for abutting against the sliding bracket in the movement direction of the drawer is provided on the bottom support plate.

[0007] Furthermore, the drawer is provided with a mechanism bottom plate, and a strip groove is opened on the mechanism bottom plate along the movement direction of the drawer. A limiting column is fixedly connected to the sliding bracket, one end of the limiting column is connected to the elastic member, and the other end extends toward the bottom support plate for abutting against the boss.

[0008] Furthermore, the elastic member is a tension spring or a top spring.

[0009] Furthermore, an indicator bar is telescopically provided in the telescopic position display component, a plurality of marks are arranged on the indicator bar, and a display square groove for displaying the marks is opened on the telescopic position display component.

[0010] Furthermore, an unlocking fixed bracket is provided on the drawer, the unlocking piece is passed through the unlocking fixed bracket, a sliding groove for the locking rod to pass through is provided on the unlocking piece, and limiting grooves are provided on the unlocking fixed bracket and the bottom of the drawer, and both ends of the locking rod are respectively passed through the limiting grooves, and the sliding groove and the limiting groove form a set angle.

[0011] Furthermore, it also includes a first spring, the two ends of which are respectively connected to the unlocking piece and the unlocking fixed bracket, the action of the unlocking piece includes an unlocking position and a locking position, and the first spring provides an elastic force for the unlocking piece to tend toward the locking position.

[0012] Furthermore, it includes a square rod bracket, on which a square rod interlocking lock plate is movably provided, and the square rod bracket is connected with a square rod interlocking piece via a rotating shaft, and an arc groove is provided on the square rod interlocking piece, and one end of the square rod interlocking lock plate is provided with a sliding shaft for passing through the arc groove, and the rotation of the square rod interlocking piece drives the lifting and lowering of the square rod interlocking lock plate, and the front end of the bottom support plate is provided with a flange for abutting against the lower end of the square rod interlocking lock plate.

[0013] In summary, the present invention is beneficial in that:

[0014] The present invention adopts a locking component which is separately arranged on the drawer and the bottom support plate, and sets a plurality of locking points. The drawer position can be accurately locked during the push-in and pull-out actions of the drawer. The locking component is independent of the connection structure between the drawer and the switch cabinet and is not affected by the large deadweight of the drawer, thus effectively ensuring the service life and accurate locking position. In combination with the micro switch and telescopic position display component which are precisely arranged, the position status can be accurately marked when the drawer is locked at any point, so that the user can clearly obtain the current position information and the user experience is friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the drawer and the bottom support plate of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the side lock hand-pull propulsion mechanism.

[0017] Figure 3 It is a schematic diagram of the structure of the unlocking piece.

[0018] Figure 4 for Figure 2 Schematic diagram of the structure from the bottom view.

[0019] Figure 5 It is a structural schematic diagram of the sliding bracket part.

[0020] Figure 6 This is a schematic diagram of the structure of the square rod support part.

[0021] Figure 7 for Figure 2 Structural schematic diagram when the middle elastic member is a top spring.

[0022] Markings 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. Slide groove; 323. Lock rod; 324. Spring; 325. Unlocking slide plate; 33. Sliding bracket; 331. Limiting column; 332. Tension spring; 333. Strip 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. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0025] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0027] A switch cabinet drawer side lock hand-pull push mechanism, arranged in a drawer 1 in the switch cabinet, referring to Figure 1 The drawer 1 is arranged in the drawer slot on the switch cabinet, and a bottom support plate 2 and a slide rail are arranged at the bottom of the drawer slot. The drawer 1 can translate on the bottom support plate 2 along the slide rail to realize rocking in and out of the drawer slot. The drawer 1 has three specific position states relative to the drawer slot during the rocking in and out process, including a connection position, a test position and an isolation position, and the positional relationship among the connection position, the test position and the isolation position is arranged in sequence from the inside of the drawer slot to the outside.

[0028] The side lock hand-pull push mechanism is used to execute the precise positioning of the drawer 1 between the above three position states. The side lock hand-pull push mechanism includes a mechanism base plate 31 arranged at the bottom of the drawer 1, and a locking component and a hand-pull push display component arranged on the mechanism base plate 31.

[0029] Reference Figure 2 and Figure 3 The locking assembly 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 bottom plate 31. The unlocking piece 321 is inserted into the unlocking fixed bracket 32 ​​and can move in a first straight line direction. The first straight line direction is in a horizontal position. The action of the unlocking piece 321 includes an unlocking position and a locking position. A slot is provided on the mechanism bottom plate 31 for the unlocking piece 321 to pass through, which limits the unlocking piece 321 to a certain extent and makes its action direction more stable. A spring 324 is provided between the unlocking piece 321 and the unlocking fixed bracket 32. The spring 324 provides an elastic force along the first straight line direction to the unlocking piece 321, so as to maintain the unlocking piece 321 in the locked position when there is no other external force.

[0030] The unlocking piece 321 is provided with a slide groove 322 which passes through vertically, and the locking rod 323 is inserted into the slide groove 322. The locking rod 323 is a columnar structure, and the axial direction of the locking rod 323 is vertically arranged, which is perpendicular to the first straight line direction. The locking rod 323 can move relatively in the slide groove 322. A first limiting groove is provided on the top of the unlocking fixing bracket 32, and a second limiting groove is provided on the mechanism bottom plate 31. The first limiting groove and the second limiting groove overlap in the axial projection of the locking rod 323. The upper and lower ends of the locking rod 323 pass through the first limiting groove and the second limiting groove respectively. The locking rod 323 is arranged in the first limiting groove and the second limiting groove, and the setting direction of the slide groove 322 forms a set angle with the setting direction of the first limiting groove or the second limiting groove. Therefore, when the unlocking piece 321 translates along the first straight line direction, the force exerted by the inner wall of the slide groove 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 the two ends of the setting direction of the first limiting groove (or the second limiting groove).

[0031] Reference Figure 2 , Figure 4 The lock rod 323 of the embodiment of the present invention can be locked to the state that the drawer 1 is unlocked, and the lock rod 323 can be locked to the state that the drawer 1 is unlocked, and the lock rod 323 can be locked to the state that the drawer 1 is unlocked.

[0032] Furthermore, an unlocking slide 325 is provided on the unlocking piece 321, and a micro switch is provided on one side of the unlocking fixed bracket 32. When the unlocking piece 321 drives the unlocking slide 325 to move, the unlocking slide 325 can trigger the micro switch, and an indicator light electrically connected to the micro switch can be provided on the drawer 1 to indicate that it is currently in an unlocked position or a locked position.

[0033] Furthermore, a self-locking switch is provided at the front end of the drawer 1, and 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 abuts against the unlocking piece 321 to prevent the unlocking piece 321 from returning to the locked position. At this time, when the above-mentioned 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.

[0034] When the drawer 1 is pushed and pulled out to the isolation position, the test position and the connection position, the self-locking switch is pressed again to release the unlocking piece 321, thereby eliminating the reset lock on the unlocking piece 321. When the drawer 1 is moved to any one of the isolation position, the test position and the connection position, the corresponding groove 211 on the positioning plate 21 creates a gap in the moving stroke of the locking rod 323, so that the unlocking piece 321 can be pushed by the spring 324 to reset to the locking position, and the locking rod 323 can enter the groove 211, thereby locking the drawer 1 and the drawer slot, thereby realizing the precise positioning of the drawer 1 to any desired position among the isolation position, the test position and the connection position.

[0035] When the drawer 1 moves outward from the isolation position, in order to avoid the safety risk caused by the drawer 1 being accidentally over-pulled out, a square rod bracket 341 and a square rod interlocking lock plate 34 are also provided. Figure 6 The square rod interlocking lock plate 34 is arranged on the square rod bracket 341 and passes downward through the mechanism bottom plate 31. 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 portion such as a flange or a step. When the square rod interlocking lock plate 34 is in the downward position, the square rod interlocking lock plate 34 will be pressed forward against the flange or the step during the outward pulling process of the drawer 1, so that the drawer 1 cannot be pulled out further, thereby ensuring safety.

[0036] A square bar locking piece 342 is provided on the square bar bracket 341, and the square bar locking piece 342 is connected to the square bar bracket 341 through a rotating shaft, so that the square bar locking piece 342 can rotate relative to the square bar bracket 341 along the rotating shaft as the rotation center, and an arc groove 343 is provided on the square bar locking piece 342, and the center of the arc groove 343 is offset by a set spacing relative to the center of the rotating shaft, and a sliding shaft is provided on the square bar interlocking lock plate 34, and the sliding shaft is penetrated by the arc groove 343, and then under the rotation action of the square bar locking piece 342, the relative matching relationship between the arc groove 343 and the sliding shaft can drive the lifting action of the square bar interlocking lock plate 34, and the height position of the square bar interlocking lock plate 34 can be set by fixing the rotation angle of the square bar locking piece 342.

[0037] In order to enable the user to more clearly know the current position of drawer 1, refer to Figure 1 , Figure 2 and Figure 5 The hand-pull push display assembly includes a sliding bracket 33, a limiting column 331, an elastic member, and a telescopic position display assembly 35. The sliding bracket 33 is arranged on the mechanism bottom plate 31 and can move relative to the mechanism bottom plate 31 along the movement direction of the drawer 1. The limiting column 331 is fixedly connected to the sliding bracket 33. A strip groove 333 is opened on the mechanism bottom plate 31 along the movement direction of the drawer 1. The bottom end of the limiting column 331 passes downward through the strip groove 333 to the bottom of the mechanism bottom plate 31. A boss 22 is correspondingly arranged on the bottom support plate 2. The boss 22 is located directly below the strip groove 333. The two ends of the elastic member are respectively fixed to the limiting column 331 and the mechanism bottom plate 31.

[0038] The elastic member includes but is not limited to a tension spring 332 or a top spring 334. The tension spring 332 or the top spring 334 is arranged corresponding to the movement direction of the limit column 331 to provide a reset function for the sliding bracket 33. Figure 2 and Figure 7 .

[0039] When the drawer 1 is pushed into the drawer slot, the mechanism bottom plate 31 drives the sliding bracket 33 to move until the limit column 331 is against the boss 22, and the boss 22 limits the further movement of the limit column 331 and the sliding bracket 33. Therefore, when the mechanism bottom plate 31 moves further, the sliding bracket 33 and the mechanism bottom plate 31 form a relative movement and stretch the tension spring 332 or compress the top spring 334; conversely, when the drawer 1 is pulled out, the rebound effect 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 bottom plate 31, and under further pulling out, the limit column 331 is disengaged from the boss 22.

[0040] The telescopic position display component 35 is arranged at the front end of the mechanism bottom plate 31, and an indicator bar 352 is inserted in the telescopic position display component 35. The indicator bar 352 can be telescopic relative to the telescopic position display component 35 along the length direction. Three marks representing the isolation position, the test position, and the connection position are arranged in sequence on the indicator bar 352 along the length direction. A display square groove 351 is opened on the telescopic position display component 35. During the relative extension and retraction of the indicator bar 352, the three marks can all be moved to the position opposite to the display square groove 351. Three micro switches are arranged in sequence on the mechanism bottom plate 31, and the three micro switches 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, the relative movement of the sliding bracket 33 will trigger the three micro switches respectively, thereby triggering the telescopic position display component 35 to drive the indicator bar 352 to perform corresponding telescopic actions, so as to display the corresponding marks in the display square groove 351 for the user to view.

[0041] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A switch cabinet drawer side lock hand-pull push mechanism, used for the drawer (1) to enter and exit the switch cabinet, characterized in that: The switch cabinet comprises a bottom support plate (2), and the drawer (1) is arranged on the bottom support plate (2); it also comprises a locking assembly, and the locking assembly comprises an unlocking piece (321) and a locking rod (323) arranged on the drawer (1), and a positioning plate (21) arranged on the bottom support plate (2); the positioning plate (21) is provided with a plurality of grooves (211) for accommodating the locking rod (323); 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 / leave the groove (211); the drawer (1) is provided with a telescopic position display assembly (35) and a plurality of micro switches The telescopic position display component (35) is electrically connected to the micro switch, and a plurality of micro switches are arranged in sequence along the movement direction of the drawer (1). A sliding bracket (33) for triggering the micro switch is provided on the drawer (1) in a sliding and matching manner, and an elastic member for resetting the sliding bracket (33) is also provided. The two ends of the elastic member are respectively connected to the sliding bracket (33) and the drawer (1). A self-locking switch is provided at the front end of the drawer (1), and the action end of the self-locking switch is connected to the unlocking piece (321). A boss (22) for abutting against the sliding bracket (33) in the movement direction of the drawer (1) is provided on the bottom support plate (2).

2. A switch cabinet drawer side lock hand-pull push mechanism according to claim 1, characterized in that: The drawer (1) is provided with a mechanism bottom plate (31), and a strip groove (333) is provided 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), and one end of the limiting column (331) is connected to the elastic member, and the other end extends toward the bottom support plate (2) to abut against the boss (22).

3. A switch cabinet drawer side lock manual push mechanism according to claim 2, characterized in that: The elastic member is a tension spring (332) or a top spring (334).

4. A switch cabinet drawer side lock hand-pull push mechanism according to claim 1, characterized in that: An indication bar (352) is telescopically provided in the telescopic position display component (35), a plurality of marks are arranged on the indication bar (352), and a display square groove (351) for displaying the marks is provided on the telescopic position display component (35).

5. A switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: The drawer (1) is provided with an unlocking fixed bracket (32), the unlocking piece (321) is inserted into the unlocking fixed bracket (32), the unlocking piece (321) is provided with a slide groove (322) for the locking rod (323) to be inserted, the unlocking fixed bracket (32) and the bottom of the drawer (1) are both provided with limiting grooves, the two ends of the locking rod (323) are respectively inserted into the limiting grooves, and the slide groove (322) forms a set angle with the limiting groove.

6. A switch cabinet drawer side lock hand-pull push mechanism according to claim 5, characterized in that: It also includes a first spring (324), the two ends of which are respectively connected to the unlocking piece (321) and the unlocking fixed bracket (32), the action of the unlocking piece (321) includes an unlocking position and a locking position, and the first spring (324) provides an elastic force for the unlocking piece (321) to move toward the locking position.

7. A switch cabinet drawer side lock manual push mechanism according to claim 1, characterized in that: The invention also comprises a square rod bracket (341), on which a square rod interlocking locking plate (34) is movably inserted, and a square rod interlocking piece (342) is connected to the square rod bracket (341) via a rotating shaft, and an arc groove (343) is provided on the square rod interlocking locking plate (342), and a sliding shaft for inserting into the arc groove (343) is provided at one end of the square rod interlocking locking plate (34), and the rotation of the square rod interlocking piece (342) drives the lifting of the square rod interlocking locking plate (34), and the front end of the bottom support plate (2) is provided with a flange for abutting against the lower end of the square rod interlocking locking plate (34).

Images