CN213402212U

CN213402212U - Driving structure for drawer of draw-out type low-voltage switch cabinet

Info

Publication number: CN213402212U
Application number: CN202022649867.3U
Authority: CN
Inventors: 周金隆; 郭光辉; 郝志刚
Original assignee: Wenzhou Deyuan Electric Co ltd
Current assignee: Wenzhou Deyuan Electric Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-08
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to a low-voltage switchgear drawer technical field, concretely relates to pull-out type low-voltage switchgear is drive structure for drawer. A draw-out type low-voltage switchgear drive structure for drawer includes: the base is internally provided with a transmission assembly and a first positioning piece; the limiting part is in transmission connection with the transmission assembly and is provided with a plurality of limiting grooves which are distributed at intervals along the circumferential direction, and the first positioning part is clamped and positioned with different limiting grooves under the driving of the transmission assembly; the driving piece is movably connected with the base and has a first state that the driving piece is in contact with the limiting piece to drive the micro switch to work and a second state that the driving piece is separated from the limiting piece to stop the micro switch from working when the limiting piece rotates. The utility model provides a draw-out type low-voltage switchgear drive structure for drawer of simple structure, with low costs, and easily assembly.

Description

Driving structure for drawer of draw-out type low-voltage switch cabinet

Technical Field

The utility model relates to a low-voltage switchgear drawer technical field, concretely relates to pull-out type low-voltage switchgear is drive structure for drawer.

Background

The low-voltage draw-out switch equipment has wide application range and large quantity at home and abroad, wherein the drawer technology is the key for determining the performance of the draw-out switch cabinet, and the drawer driving structure is the core component of the drawer, so the advancement of the drawer technology is determined by the reasonableness of the drawer driving structure. The existing drawer driving structure is characterized in that a transmission screw rod arranged on a drawer bottom plate through a base is matched with a groove-shaped positioning piece arranged on a cabinet body layer plate to push a drawer to move back and forth, and the drawer is positioned in a linear movement mode through a spiral protrusion of the transmission screw rod and a chute of the groove-shaped positioning piece, so that the drawer is prevented from being skewed due to stress and generating a mechanical movement dead point when being subjected to reverse withdrawal force. The mechanism screw rod is fixedly connected with the operating gear, the operating gear is shaken and is transmitted to the positioning gear through the secondary gear, the mechanism is set to three positions and displayed, the three positions are positioned on the positioning gear, the three-position display indicator is connected with the positioning gear, and meanwhile, the electric microswitch is matched with the positioning gear through the positioning rod part and the stop block part to work, so that the synchronization of three mechanical positions and three electric positions is realized. However, the movement of the mechanism is transmitted to the electric microswitch through the positioning rod component and the stop block component, and the positioning rod component is matched with the stop block component through the torsion spring, so that the whole structure of the mechanism is complex, the cost is high, and the assembly process is complicated.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the pull-out type low-voltage switchgear for drawer drive structure among the prior art complicated, with high costs, and the loaded down with trivial details defect of assembling process to provide a simple structure, with low costs, and the pull-out type low-voltage switchgear for drawer drive structure of easily assembling.

In order to solve the technical problem, the utility model provides a pull-out type low-voltage switchgear drive structure for drawer, include:

the base is internally provided with a transmission assembly and a first positioning piece;

the limiting part is in transmission connection with the transmission assembly and is provided with a plurality of limiting grooves which are distributed at intervals along the circumferential direction, and the first positioning part is clamped and positioned with different limiting grooves under the driving of the transmission assembly;

the driving piece is movably connected with the base and has a first state that the driving piece is in contact with the limiting piece to drive the micro switch to work and a second state that the driving piece is separated from the limiting piece to stop the micro switch from working when the limiting piece rotates.

Optionally, one side of the limiting member facing the micro switch is provided with a boss extending in the axial direction, and when the limiting member rotates, the boss contacts with or is disconnected from one end of the driving member.

Optionally, an opening groove extending along the moving direction of the driving member is formed in the base, and the driving member is slidably disposed in the opening groove.

Optionally, the driving member includes an actuating rod and a spring sleeved on the actuating rod, a limiting plate is arranged in the open slot and abutted against one end of the spring, and a through hole allowing the actuating rod to penetrate through is formed in the limiting plate.

Optionally, a stopper is further disposed on one side of the limiting member, which faces the micro switch, and the stopper is matched with a second positioning member disposed on the base to limit the maximum rotation angle of the limiting member.

Optionally, the first positioning member is a spring plate.

Optionally, the transmission assembly includes a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are in meshed connection, the limiting member is a fourth gear in meshed connection with the third gear, and the first gear is driven by external force to rotate.

Optionally, the first gear is further connected with a screw assembly provided in the base.

Optionally, one end of the limiting member extends out of the base to be clamped with an indicating disc.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a draw-out type low-voltage switchgear drawer is with drive structure drives the locating part and rotates when transmission assembly receives the exogenic action, until reaching preset position, and the first locating part block is fixed a position in the corresponding spacing groove of locating part this moment, and the locating part contacts with the driving piece simultaneously, and micro-gap switch works; when the transmission assembly continues to rotate, the limiting piece is separated from the driving piece, the micro switch stops working, and after the transmission assembly rotates for a certain angle, the first positioning piece is clamped in the other limiting groove of the limiting piece for positioning. Because the locating part directly passes through the micro-gap switch of driving piece drive and opens and close, consequently simplified the structure of whole device, the cost is reduced, and easily the assembly.

2. The utility model provides a pull-out type low-voltage switchgear is drive structure for drawer is equipped with the open slot that extends the setting along the direction of motion of driving piece in the base, and the driving piece slides and locates in the open slot. The arrangement of the open slot has the function of guiding the movement of the driving piece, so that the driving piece is prevented from deviating from a preset track, and the reliability of the whole device is further ensured.

3. The utility model provides a pull-out type low-voltage switchgear is drive structure for drawer, the setting of one side dog of locating part orientation switch for the second setting element cooperation that sets up on dog and the base, with the biggest turned angle who limits the locating part, prevent that the locating part is rotatory excessive, play certain guard action.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a driving structure for a drawer of a draw-out type low-voltage switch cabinet according to the present invention;

FIG. 2 is a schematic view of FIG. 1 with the base removed;

FIG. 3 is a partial schematic view of FIG. 2;

fig. 4 is a schematic view of the limiting member in fig. 1.

Description of reference numerals:

1. a first positioning member; 2. a limiting member; 3. a front base; 4. a middle base; 5. a rear base; 6. a screw rod; 7. a copper gasket; 8. a first gear; 9. a second gear; 10. a third gear; 11. a first plastic pad; 12. a shaft sleeve; 13. a second plastic pad; 14. a connecting position limiting groove; 15. a test position limiting groove; 16. separating the position limiting groove; 17. a switch bracket; 18. a boss; 19. a drive rod; 20. a spring; 21. a stopper; 22. a second positioning member; 23. an indicator panel; 24. a micro switch.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

One embodiment of the driving structure for the drawer of the draw-out type low voltage switch cabinet as shown in fig. 1 to 4 comprises a base, a transmission assembly arranged in the base, a first positioning member 1, a limiting member 2 in transmission connection with the transmission assembly, and a driving member movably connected with the base.

The base includes preceding base 3, well base 4 and the back base 5 that connect gradually from preceding to back, and preceding base 3 and the first installation space of 4 overlap joints formation of well base, and well base 4 and 5 overlap joints formation second installation space of back base. The second installation space is clamped with a screw rod assembly, the screw rod assembly comprises a screw rod 6 and a copper gasket 7 sleeved on the end part of the screw rod 6, and two ends of the screw rod 6 are respectively clamped with the middle base 4 and the rear base 5.

The transmission assembly is arranged in a first installation space between the front base 3 and the middle base 4 and comprises a first gear 8, a second gear 9 and a third gear 10, wherein the first gear 8, the second gear 9 and the third gear 10 are connected in a meshed mode, the third gear 9 and the third gear 10 are coaxially arranged, and the limiting part 2 is a fourth gear connected with the third gear 10 in a meshed mode. One end of the first gear 8 extends out of an opening below the front base 3 and is provided with a force application end for applying force, the force application end is driven by external force to rotate and sequentially drives the second gear 9, the third gear 10 and the fourth gear to rotate, and the other end of the first gear 8 is further connected with the screw rod 6. The two axial ends of the second gear 9 are respectively sleeved with a first plastic pad 11, and the two first plastic pads 11 are respectively clamped on the front base 3 and the middle base 4. The axial two ends of the fourth gear are respectively sleeved with a shaft sleeve 12 and a second plastic pad 13, the shaft sleeve 12 is clamped on the middle base 4, and the second plastic pad 13 is clamped on the front base 3.

As shown in fig. 4, the stopper 2 has three stopper grooves, i.e., a connection position stopper groove 14, a test position stopper groove 15, and a separation position stopper groove 16, which are circumferentially spaced. Under the drive of the transmission component, the spring piece as the first positioning piece 1 is clamped and positioned with different limiting grooves so as to fix the current position of the driving structure. As shown in fig. 2, the spring plate is V-shaped, and the closed end of the V-shape is engaged with the limit groove.

A pair of through holes are formed in the positions corresponding to the middle base 4 and the rear base 5, the driving member penetrates through the pair of through holes, and the micro-switch 24 has a first state that the driving member is in contact with the limiting member 2 to drive the micro-switch 24 to work and a second state that the driving member is separated from the limiting member 2 to stop the micro-switch 24 to work when the limiting member 2 rotates.

Be equipped with switch bracket 17 on rear base 5, be formed with the third installation space between switch bracket 17 and the rear base 5 roof, be equipped with in the third installation space along the direction of motion of driving piece extends the open slot that sets up, the driving piece slides and locates in the open slot. One side of the limiting piece 2 facing the micro switch 24 is provided with a boss 18 extending along the axial direction, the boss 18 is arranged close to and higher than the edge of the limiting piece 2 and is in a frustum shape, when the limiting piece 2 rotates until the boss 18 is opposite to one end of the driving piece, the boss 18 is in contact with one end of the driving piece, and the other end of the driving piece applies force to the micro switch to enable the micro switch to work; when the rotation continues, the boss 18 is disconnected from the driving piece, the micro switch is not stressed, and the micro switch stops working.

Specifically, as shown in fig. 3, the driving member includes a driving rod 19 and a spring 20 sleeved on the driving rod 19, a limiting plate is disposed in the open slot and abutted against one end of the spring 20, and a through hole allowing the driving rod 19 to penetrate through is disposed on the limiting plate. When the driving rod 19 contacts the boss 18 on the limiting member 2, the spring 20 is compressed to store energy so as to provide restoring force for the driving rod 19 when the driving rod 19 is separated from the boss 18.

In order to prevent the limiting member 2 from rotating excessively, as shown in fig. 4, a stopper 21 is further disposed on one side of the limiting member 2 facing the micro switch 24, the stopper 21 is formed by extending the edge of the limiting member 2 toward the axial center, and two circumferential sides of the stopper 21 are arc-shaped groove bodies. The middle base 4 is further provided with a second positioning element 22, the second positioning element 22 is a positioning pin, and when the limiting element 2 rotates to the maximum position, the positioning pin contacts with the stopper 21 to prevent the stopper from continuing to rotate, so as to limit the maximum rotation angle of the limiting element 2.

In order to conveniently display different positions of the driving structure, one end of the limiting part 2 extends out of the front base 3 and is clamped with an indicating disc 23. Three different movement positions, respectively connection positions, are marked on the indicator panel 23

Test site

And a separation position

When the drive structure is in the starting position, the indicator disc 23 shows the disengaged position

At this time, the spring piece is clamped in the separation position limiting groove 16 of the fourth gear, the driving rod 19 is not contacted with the boss 18 on the fourth gear, and the micro switch does not work. When external force drives the second gear 9, the third gear 10 and the fourth tooth through the force application end of the first gear 8When the wheels rotate in sequence, the external force drives the crank to rotate clockwise 720 degrees, the test position can be reached, and the indicating disc 23 displays that

The spring piece is clamped in the test position limiting groove 15 of the fourth gear, a click sound can be heard, the boss 18 of the fourth gear is in contact with one end of the driving rod 19, the other end of the driving rod 19 pushes the micro switch, and the micro switch is in a working state. When the clockwise rotation is continued by 720 °, the coupling position is reached and the indicator disk 23 is shown as

The spring piece is clamped in the connecting position limiting groove 14 of the fourth gear, a click sound can be heard, the boss 18 of the fourth gear is separated from one end of the driving rod 19, the micro switch does not work, and meanwhile, the positioning pin is contacted with the stop block 21 on the fourth gear to prevent the fourth gear from continuously rotating.

As an alternative embodiment, the spring 20 may not be disposed on the driving rod 19, and the micro switch is turned on and off only by the contact and separation between the boss 18 and the driving rod 19.

As an alternative embodiment, the first positioning element 1 may also be a rubber column adapted to the limiting groove.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a pull-out type low-voltage switchgear drive structure for drawer which characterized in that includes:

the base is internally provided with a transmission assembly and a first positioning piece (1);

the limiting pieces (2) are in transmission connection with the transmission assembly and are provided with a plurality of limiting grooves which are distributed at intervals along the circumferential direction, and the first positioning pieces (1) are clamped and positioned with different limiting grooves under the driving of the transmission assembly;

the driving piece is movably connected with the base and has a first state that when the limiting piece (2) rotates, the driving piece is in contact with the limiting piece (2) to drive the micro switch (24) to work and a second state that the driving piece is separated from the limiting piece (2) to enable the micro switch (24) to stop working.

2. The drive structure for the drawer of the draw-out low-voltage switch cabinet according to claim 1, wherein the side of the limiting member (2) facing the microswitch (24) is provided with a boss (18) extending in the axial direction, and the boss (18) is in contact with or separated from one end of the driving member when the limiting member (2) rotates.

3. The draw-out low voltage switchgear drawer drive arrangement of claim 2, wherein the base has an opening slot extending along a direction of movement of the driving member, the driving member being slidably disposed in the opening slot.

4. The draw-out type low-voltage switch cabinet drawer driving structure according to claim 3, wherein the driving member comprises a driving rod (19) and a spring (20) sleeved on the driving rod (19), a limiting plate abutting against one end of the spring (20) is arranged in the open slot, and a through hole allowing the driving rod (19) to penetrate through is arranged on the limiting plate.

5. The drawer-type low-voltage switch cabinet driving structure according to any one of claims 2 to 4, wherein a stop block (21) is further provided on the side of the limiting member (2) facing the micro switch (24), and the stop block (21) is matched with a second positioning member (22) provided on the base to limit the maximum rotation angle of the limiting member (2).

6. The drawer-type low-voltage switchgear drawer driving structure according to any one of claims 1 to 4, wherein the first positioning member (1) is a leaf spring.

7. The drawer type low-voltage switch cabinet driving structure according to any one of claims 1 to 4, wherein the transmission assembly comprises a first gear (8), a second gear (9) and a third gear (10) which is coaxially arranged with the second gear (9) in meshed connection, the limiting member (2) is a fourth gear which is in meshed connection with the third gear (10), and the first gear (8) is driven to rotate by external force.

8. The draw-out low voltage switchgear drawer drive arrangement according to claim 7, characterized in that the first gear wheel (8) is further connected to a screw assembly provided in the base.

9. The drawer drive of a low-voltage switchgear cabinet according to any of claims 1 to 4, characterized in that one end of the stopper (2) extends beyond the base to which an indicator plate (23) is clamped.