CN219677120U - Single-side pressing type micro-switch - Google Patents

Abstract

The utility model provides a unilateral pressing type micro-switch, which relates to the field of electronic elements and comprises a shell, wherein a cavity is formed in the shell, a first guide piece, a second guide piece and a third guide piece are respectively fixed in the cavity, a conductive elastic piece is fixed at the top end of the first guide piece, a moving contact is fixed at the other end of the conductive elastic piece, fixed contacts are fixed at the top ends of the second guide piece and the third guide piece, the moving contact is abutted against the fixed contacts on the third guide piece, and a small cylinder is fixed on the surface of the shell. Through setting up small-size cylinder, link plate, slide bar, insulation board and spring, can carry out real-time supervision to the temperature of second guide blade and third guide blade contact department, when the temperature is too high, the insulation board just can plug between fixed contact and the moving contact that contacts, breaks off the passageway that contacts formation, and micro-gap switch just can stop work, makes micro-gap switch have overheat protection function to can reduce the potential safety hazard when using.

Description

Single-side pressing type micro-switch

Technical Field

The utility model relates to the field of electronic elements, in particular to a single-side pressing type micro-movement switch.

Background

The micro switch is a kind of switch with micro contact interval and fast acting structure, and is covered with casing and has driving rod outside, and has the principle that the external mechanical force acts on the acting reed via the driving element to make the fixed contact and the moving contact fast on or off.

Because the service environment of some micro-gap switches influences, when long-time contact circular telegram is used, because the overload is big, the temperature of contact and guide blade can become seriously high, and the high temperature can make terminal contact point appear melting and gluing the condition to the unable normal work of transmission component of initiation inside leads to micro-gap switch to break down, has certain potential safety hazard.

Disclosure of Invention

The present utility model is directed to solving the problems set forth in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a unilateral push type micro-moving switch, includes the shell, the cavity has been seted up in the shell, be fixed with first guide blade, second guide blade and third guide blade in the cavity respectively, the top of first guide blade is fixed with electrically conductive shell fragment, electrically conductive shell fragment's the other end is fixed with the moving contact, the top of second guide blade and third guide blade all is fixed with the fixed contact, the moving contact is contradicted with the fixed contact on the third guide blade, the surface mounting of shell has small-size cylinder, the output of small-size cylinder runs through the shell and is connected with the link plate in the cavity sliding connection, the top and the bottom of link plate are all symmetrical to be fixed with two slide bars, two adjacent the surface sliding connection of slide bar has the insulation board, the cavity internal fixation has the reed, the one end and the surface fixation of electrically conductive shell fragment of reed, cavity top sliding connection has the pressing block, the top of pressing the top of piece slides and runs through the top of shell, the top contact of pressing the piece has the handle, the one end of pressing the handle is fixed in the shell, the bottom of pressing handle and the shell are connected with the telescopic link through the round pin axle in the bottom.

Preferably, circular plates are fixed at the tops of the sliding rods, two springs are symmetrically fixed at the tops and the bottoms of the connecting plates, four springs are respectively sleeved on the surfaces of the adjacent sliding rods, and the tops of the springs are fixedly connected with the surfaces of the corresponding insulating plates.

Preferably, the surface fixing of shell has the casing, small-size cylinder is fixed in the casing, be provided with temperature sensor in the casing, the top of second guide piece and third guide piece all with temperature sensor electric connection.

Preferably, the top and the bottom of insulation board one end all are downward slope form towards the centre, and the surface that inclines all is connected with the bull stick through the round pin axle rotation.

Preferably, one end of the pressing handle, which is inclined upwards, is rotatably connected with a roller.

Preferably, the bottom ends of the first guide piece, the second guide piece and the third guide piece penetrate through the bottom of the shell.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the utility model, the temperature of the second guide blade and the third guide blade contact can be monitored in real time by arranging the small-sized air cylinder, the connecting plate, the sliding rod, the insulating plate and the spring, when the temperature is too high, the insulating plate can be plugged between the fixed contact and the moving contact which are in contact, a passage formed by the contact is disconnected, and the micro switch can stop working, so that the micro switch has an overheat protection function, and potential safety hazards can be reduced when the micro switch is used.

2. According to the utility model, the telescopic rod is arranged, so that the pressing handle can be limited while the pressing handle is matched for working, and the problem that the control of the micro switch cannot be realized due to the fact that the pressing handle is pushed because the pressing handle is deviated out of the contact range with the pressing block is avoided, thereby reducing the failure rate of the micro switch and prolonging the service life of the micro switch.

Drawings

Fig. 1 is a perspective view of an internal structure of a single-sided push type micro switch according to the present utility model;

fig. 2 is a perspective view showing a cut-away structure of a third guide piece and a housing in a single-side push type micro-switch according to the present utility model;

fig. 3 is an enlarged perspective view of a portion a of the single-side push type micro switch according to the present utility model;

fig. 4 is a perspective view of an insulating plate structure in a single-sided push type micro-switch according to the present utility model;

fig. 5 is a structural perspective view of another embodiment of a single-sided push type micro switch according to the present utility model.

Legend description: 1. a housing; 2. a cavity; 3. a first guide piece; 4. a second guide piece; 5. a third guide piece; 6. a conductive spring plate; 7. a moving contact; 8. a fixed contact; 9. a small cylinder; 10. a connecting plate; 11. a slide bar; 12. an insulating plate; 13. a reed; 14. pressing the blocks; 15. pressing the handle; 16. a telescopic rod; 17. a circular plate; 18. a spring; 19. a housing; 20. a rotating rod; 21. and a roller.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

In the embodiment 1, as shown in fig. 1-4, the utility model provides a single-side push type micro switch, which comprises a shell 1, wherein a cavity 2 is formed in the shell 1, a first guide piece 3, a second guide piece 4 and a third guide piece 5 are respectively fixed in the cavity 2, a conductive spring piece 6 is fixed at the top end of the first guide piece 3, a movable contact 7 is fixed at the other end of the conductive spring piece 6, fixed contacts 8 are fixed at the top ends of the second guide piece 4 and the third guide piece 5, the movable contact 7 is abutted against the fixed contacts 8 on the third guide piece 5, a small cylinder 9 is fixed on the surface of the shell 1, an output end of the small cylinder 9 penetrates through the shell 1 and is connected with a connecting plate 10 in a sliding manner in the cavity 2, two slide bars 11 are symmetrically fixed at the top and the bottom of the connecting plate 10, an insulating plate 12 is connected on the surface of two adjacent slide bars 11 in a sliding manner, a reed 13 is fixed in the cavity 2, one end of the reed 13 is fixed with the surface of the conductive spring piece 6, a push block 14 is connected with the top of the cavity 2 in a sliding manner, the top end of the push block 14 penetrates through the top of the shell 1 in a sliding manner, the top of the push block 14 contacts the top end 15 of the push block 15, and a telescopic handle 15 is connected with the bottom of the push handle 15 in the shell 1 through a telescopic handle 16.

The whole embodiment 1 achieves the effects that when the temperature of the contact positions of the second guide piece 4 and the third guide piece 5 is higher, the controller can automatically control the small-sized air cylinder 9 to drive the connecting plate 10 to move towards the moving contact 7, so that the insulating plate 12 is plugged between the fixed contact 8 and the moving contact 7 which are in contact, the insulating plate 12 can disconnect a passage formed by contact, the moving contact 7 cannot collide with any fixed contact 8, when the temperature of the conductive metal sheet is too high during operation, the operation of the micro switch is automatically stopped, the overheat protection function is realized, the telescopic rod 16 can cooperate with the operation of the pressing handle 15 to limit the pressing handle 15, the pressing handle 15 is prevented from moving out of the contact range with the pressing block 14, the pressing handle 15 is prevented from being bent and the like, and the pressing block 14 cannot be pushed, and therefore the fault rate of the micro switch is reduced.

In the embodiment 2, as shown in fig. 1-4, circular plates 17 are fixed at the top of the sliding rods 11, two springs 18 are symmetrically fixed at the top and bottom of the connecting plate 10, four springs 18 are respectively sleeved on the surfaces of the adjacent sliding rods 11, and the top ends of the springs 18 are fixedly connected with the surfaces of the corresponding insulating plates 12; the surface of the shell 1 is fixed with a shell 19, the small cylinder 9 is fixed in the shell 19, a temperature sensor is arranged in the shell 19, and the top ends of the second guide piece 4 and the third guide piece 5 are electrically connected with the temperature sensor; the top and the bottom of one end of the insulating plate 12 are downward inclined towards the middle, and the inclined surfaces are rotationally connected with a rotating rod 20 through a pin shaft; the upward inclined end of the pressing handle 15 is rotatably connected with a roller 21; the bottom ends of the first guide piece 3, the second guide piece 4 and the third guide piece 5 penetrate through the bottom of the shell 1.

The whole embodiment 2 achieves the effects that as the position of the fixed contact 8 is fixed, the insulating plate 12 can slide on the slide bar 11 by matching with the spring 18, the insulating plate 12 can be smoothly inserted between contacts which are contacted, and the circular plate 17 can prevent the insulating plate 12 from being separated from the contact with the slide bar 11; the temperature sensor can monitor the temperature of the contacts of the second guide piece 4 and the third guide piece 5 in real time; the turning lever 20 is to pass over the contact surface smoothly when the insulating plate 12 moves in the contact direction.

Embodiment 3, another single-side push type micro-switch as shown in fig. 5, the operation is very simple, only needs to touch the push handle 15 and can operate the feeler lever, compared with directly pushing the feeler lever, the reliability of micro-switch operation is improved, the operation precision is high, the multi-stage contact is provided, the control requirement is enlarged, the operation error is avoided, the feeler lever cannot be accurately acted, the end part of the push handle 15 is rotationally connected to the top of the shell 1 by using the pin shaft, the connection between the push handle 15 and the shell 1 is relatively stable, the push handle 15 is prevented from being easily separated from the shell 1, the sensitivity of the micro-switch operation is reduced, and therefore the durability performance and the service life of the push handle 15 and the micro-switch are improved.

Working principle: when the micro switch is used, the temperature sensor can monitor the temperature of the top ends of the second guide sheet 4 and the third guide sheet 5 in real time, the temperature of the fixed contact 8 can be monitored, when the temperature is higher, the temperature sensor feeds back the information to the controller, the controller can start the small cylinder 9, the output end of the small cylinder 9 drives the connecting plate 10 to move towards the moving contact 7, the connecting plate 10 can drive the insulating plate 12 to move, the insulating plate 12 is plugged between the fixed contact 8 and the moving contact 7 which are contacted, the insulating plate 12 can break a passage, the moving contact 7 cannot abut against any fixed contact 8, the micro switch can be automatically stopped when the temperature of the moving contact 7 is too high, an instruction for stopping the operation is transmitted to the control terminal, the micro switch stops operating due to overheat protection, after the temperature of the conducting metal sheet is observed on the terminal, the small cylinder 9 can start operating again, the connecting plate 10 drives the insulating plate 12 to reset, and the micro switch can resume the operation.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (6)

1. A unilateral push type micro-movement switch is characterized in that: the novel electric switch comprises a shell (1), a cavity (2) is formed in the shell (1), a first guide piece (3), a second guide piece (4) and a third guide piece (5) are respectively fixed in the cavity (2), a conductive spring piece (6) is fixed at the top end of the first guide piece (3), a moving contact (7) is fixed at the other end of the conductive spring piece (6), fixed contacts (8) are fixed at the top ends of the second guide piece (4) and the third guide piece (5), fixed contacts (8) on the moving contact (7) and the third guide piece (5) are abutted, a small cylinder (9) is fixed on the surface of the shell (1), the output end of the small cylinder (9) penetrates through the shell (1) and is connected with a connecting plate (10) in a sliding mode in the cavity (2), two slide bars (11) are symmetrically fixed at the top and the bottom of the connecting plate (10), an insulating plate (12) is connected to the surface of two adjacent slide bars (11) in a sliding mode, fixed in the cavity (2) is fixedly provided with fixed contacts (8), a reed (13) is fixed in the cavity (2), one end (14) is connected with the top of the sliding bar (14) in a sliding mode, the top of the reed (14) is connected with the top of the sliding bar (1), the top contact of pressing block (14) has presses handle (15), the one end of pressing handle (15) is fixed in shell (1), be connected with telescopic link (16) through the round pin axle rotation between the bottom of pressing handle (15) and shell (1) top.

2. The single-sided push type micro-switch of claim 1, wherein: the top of slide bar (11) all is fixed with plectane (17), the top and the bottom of linking board (10) all symmetry are fixed with two springs (18), four spring (18) are overlapped respectively and are established on the surface of adjacent slide bar (11), the top of spring (18) all is connected with the surface fixation of corresponding insulation board (12).

3. The single-sided push type micro-switch of claim 1, wherein: the surface mounting of shell (1) has casing (19), small-size cylinder (9) are fixed in casing (19), be provided with temperature sensor in casing (19), the top of second guide blade (4) and third guide blade (5) all with temperature sensor electric connection.

4. The single-sided push type micro-switch of claim 1, wherein: the top and the bottom of insulation board (12) one end all are to the middle declivity form that is down, and the surface that inclines all is connected with bull stick (20) through the round pin axle rotation.

5. The single-sided push type micro-switch of claim 1, wherein: one end of the pressing handle (15) which inclines upwards is rotatably connected with a roller (21).

6. The single-sided push type micro-switch of claim 1, wherein: the bottoms of the first guide piece (3), the second guide piece (4) and the third guide piece (5) penetrate through the bottom of the shell (1).