Micro-motion combined button switch

Abstract

The utility model provides a micro-motion combined button switch, which comprises a button and a base, wherein the cross section of the base is of a structure similar to a Chinese character'ao '; the microswitch is arranged in the middle of the base and fixedly connected with the base through a positioning pin, the guide rod is located in the guide hole A, the rear cover plate is fixedly connected with the bottom of the base, the reset spring is located between the guide rod and the rear cover plate, and the pressing plate is arranged over the microswitch and fixed in the button. The pressing rod is arranged in the limiting hole of the pressing plate; the auxiliary spring is positioned between the pressing rod and the button; the operability of the micro combined button switch is obviously enhanced, circuit control can be realized more accurately and conveniently, and the overtravel of the micro switch is increased; by adopting the arrangement of the double guide rods, the double reset springs and the like, the structural reliability is effectively improved, the anti-interference capability of the switch is enhanced, the service life is prolonged, and the stability and accuracy of circuit conversion are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of micro switch, specifically relates to a micro combination button switch. BACKGROUND

[0002] The micro switch is also called sensitive switch, is mainly used for automatic control and monitoring in electronics, instruments, aviation, aerospace and mechanical electrical appliances, and has problems of insufficient structural stability, poor triggering precision and limited service life in the prior micro switch device. For example, some micro switches are prone to false triggering or triggering failure due to poor matching precision between components during frequent use. Meanwhile, the mechanical structure of some micro switches is prone to wear and deformation after long-term stress, so that the overall performance is reduced, and the requirement of high precision and long service life of the micro switch in specific application scenarios cannot be met. Since the action stroke of the micro switch is generally small, the micro switch is often used as an independent action unit, and an action mechanism is developed on the basis of the micro switch to increase the stroke of the micro switch and meet the use requirement of the whole machine equipment.

[0003] The Chinese patent with publication number CN204270921U discloses a stroke switch, which comprises a shell, a cavity is arranged in the shell, a double-ring base is arranged in the cavity, a static contact piece is arranged on the outer ring base, the contact and the operation system are concentrated in the cavity of the shell through the double-ring base structure, the overall volume of the stroke switch is greatly reduced, the size is concentrated under the premise of meeting the electrical clearance and the creepage distance, the use range is greatly expanded, the sealing effect is good, the protection level is higher, and the diversification of the operation head can be realized under the condition that the basic structure is unchanged, and the stroke switch is more universal. However, the patent controls the contact and disconnection of the moving contact piece and the static contact piece through the movement of the sliding block on the sliding rail, the structure is complex, and the patent is only suitable for devices that need continuous adjustment and control, is not suitable for devices that need quick response and simple operation, and the applicable scene is limited. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a micro combination button switch.

[0005] The utility model is realized through the following technical schemes.

[0006] The utility model provides a micro combination button switch, which comprises:

[0007] A button;

[0008] The base in the cross-section view is in a concave character-shaped structure, and the guide hole A is arranged on the symmetric protrusion B on the two sides of the base;

[0009] The micro switch is arranged in the middle part of the base and is fixed to the base through the positioning pin;

[0010] Guide rod: set in the guide hole A, the upper end is fixed in the button;

[0011] Rear cover plate: fixedly connected with the bottom of the base,

[0012] Reset spring: the upper end is sleeved with the bottom end of the guide rod, and the lower end is sleeved with the upper end of the rear cover plate;

[0013] Pressing plate: set above the micro switch, and fixed in the button; the middle part is provided with a limiting hole;

[0014] Pressing rod: set in the limiting hole, the top end is sleeved with an auxiliary spring, and the other end of the auxiliary spring is abutted with the button.

[0015] The upper end of the guide rod is a connecting part, the connecting part is a threaded structure, the connecting part is fixed by screwing through the threaded hole of the button; the middle part of the bottom end of the guide rod is provided with a one-shaped groove, and the bottom side of the guide rod is a stepped structure.

[0016] The upper end of the pressing rod is provided with a first limiting table, and the lower end is provided with a guide part; the top end of the first limiting table is provided with a second limiting table for sleeving the auxiliary spring.

[0017] The upper part of the rear cover plate is provided with a protrusion C for sleeving the reset spring.

[0018] The rear cover plate and the bottom of the base are fixedly connected through screwing or buckling riveting.

[0019] The top end of the guide hole A is provided with a second limiting step.

[0020] The cross-sectional view of the button 2 is a concave structure.

[0021] The beneficial effects of the utility model lie in that: 1, the pressing rod, the auxiliary spring and the pressing plate are cooperated for the micro switch, not only can be fast, accurate, stable and contact with the contact of the micro switch, and increase the overstroke of the micro switch, improve the pressing and contact reliability of the micro switch;

[0022] 2, by setting reset spring and auxiliary spring, not only realizes the reset function of the switch, but also buffers the impact force in the pressing process to a certain extent, reduces the friction and wear between parts, thereby effectively prolongs the service life of the micro combined button switch, and reduces the use cost;

[0023] 3, the detachable connection mode of the button and the guide rod, and the detachable connection structure of the rear cover plate and the base, so that when the device fails or needs to be maintained, the parts can be conveniently and quickly disassembled and replaced, and the maintenance efficiency is improved.

[0024] In summary, the micro-motion combined button switch of the utility model, compared with the traditional micro-motion switch, operability is enhanced significantly, circuit control can be realized more accurately and conveniently, and the overstroke of the micro-motion switch is increased; the structure reliability is effectively improved, the anti-interference ability of the switch is enhanced, the service life is prolonged, the stability and accuracy of circuit conversion are ensured by adopting the double guide rods, double return springs and the like. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure diagram of a micro-motion combined button switch of the utility model;

[0026] In the figure: 1-micro-motion switch, 2-button, 3-base, 4-guide rod, 5-return spring, 6-back cover plate, 7-pressing rod, 8-pressing plate, 9-assistant spring, 10-positioning pin, 11-limiting step, 12-connection part, 13-first limiting platform, 14-guiding part, 15-second limiting platform. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model is further described below, but the scope of protection is not limited to the description.

[0028] As Figure 1 It is a structure diagram of a micro-motion combined button switch of the utility model, a structure diagram of a micro-motion combined button switch, comprising:

[0029] Button 2;

[0030] Specifically, the cross section of the button 2 is a concave-like structure, which can not only more effectively concentrate the pressure applied by the operator on the middle part of the top of the button 2, but also make the following guide rod 4 more easily move downward in the button 2, when the button 2 is pressed, the guide rod 4 can directly respond to the pressure and move downward along the guide of the concave structure, thereby triggering the micro-motion switch 1; in addition, it can also reduce the edge wear of the button 2, so that the button 2 can maintain good performance for a long time.

[0031] The base 3 is a concave-like structure, and the guide hole A is arranged on the protrusion B symmetrically arranged on both sides of the base 3;

[0032] Micro-motion switch 1: arranged in the middle of the base 3, and fixed to the base 3 through the positioning pin 10;

[0033] Specifically, the positioning pin 10 is used to fix the position of the micro-motion switch 1 in the base 3, so that the micro-motion switch 1 will not be displaced during the operation of the device, and the accuracy and consistency of the triggering action are ensured; the positioning pin 10 is tightly matched with the positioning hole on the base 3 and the micro-motion switch unit 1, so that accurate positioning is realized.

[0034] Guide rod 4: arranged in the guide hole A, and the upper end is fixed in the button 2;

[0035] Specifically, the guide rod 4 is arranged in the guide hole A, and when the button 2 is pressed, the guide rod 4 can slide smoothly in the guide hole A, accurately transmits the force of the button 2 to the pressing plate 8, and plays a guiding and positioning role, thereby ensuring the accuracy of the pressing action.

[0036] The rear cover plate 6 is fixedly connected to the bottom of the base 3.

[0037] Specifically, the rear cover plate 6 is used to close the rear part of the base 3, protect the components inside the device from dust, impurities and other external factors, and provide a mounting support surface for the return spring 5, so that the return spring 5 can normally function.

[0038] The return spring 5 is sleeved at the upper end of the guide rod 4 and at the lower end of the rear cover plate 6.

[0039] Specifically, one end of the return spring 5 is sleeved at the bottom end of the guide rod 4, and the other end is sleeved at the upper end of the rear cover plate 6. This double-end sleeving allows the spring to push the guide rod 4 and the pressing rod 7 back to the initial position after the button 2 is released, thereby realizing the reset of the switch. Moreover, the return spring 5 can provide the necessary restoring force to ensure that the button 2 can automatically pop back to the original position after being pressed, thereby maintaining the stability and repeatability of the switch.

[0040] The pressing plate 8 is arranged directly above the micro switch 1 and is fixed in the button 2. A limiting hole is arranged in the middle of the pressing plate 8.

[0041] The pressing rod 7 is arranged in the limiting hole, and the top end of the pressing rod 7 is sleeved with the auxiliary spring 9. The other end of the auxiliary spring 9 abuts against the button 2.

[0042] The upper end of the pressing rod 7 is provided with a first limiting table 13, and the lower end is provided with a guide part 14. The top end of the first limiting table 13 is provided with a second limiting table 15 for sleeving the auxiliary spring 9.

[0043] Specifically, the first limiting table 13 is arranged on the pressing plate 8 to limit the downward movement distance of the pressing rod 7 and prevent the pressing rod 7 from moving downward excessively to damage the micro switch 1. The guide part 14 is used to guide the movement of the pressing rod 7 in the limiting hole, thereby ensuring that the pressing rod 7 stably and accurately triggers the micro switch 1. The second limiting table 15 is used to sleeve the auxiliary spring 9, thereby ensuring that the auxiliary spring 9 works in the correct position without deviation and limiting the compression distance of the spring. The other end of the auxiliary spring 9 abuts against the button 2, so that when the button 2 is pressed, the auxiliary spring 9 can be compressed, and when the button is released, the auxiliary spring 9 can push the pressing rod 7 and the button 2 back to the original position.

[0044] The upper end of the guide rod 4 is a connecting part 12, which is a threaded structure and is fixed by screwing through the threaded hole of the button 2; the middle part of the bottom end of the guide rod 4 is provided with a one-word groove; the bottom side of the guide rod 4 is a stepped structure.

[0045] Specifically, the guide rod 4 and the button 2 are connected in a detachable screw connection mode, which is convenient for installation and replacement; a screwdriver is inserted into the one-word groove, and the connecting part 12 is tightened or loosened by rotating the screwdriver, so as to realize the fixation or release of the threaded hole of the button 2; through the cooperation of the screwdriver and the one-word groove, the rotation of the connecting part 12 can be accurately controlled, ensuring that the connection between the guide rod 4 and the button 2 is firm and accurate, and this accurate fixation mode helps to ensure the trigger accuracy and operation stability of the micro switch; the stepped structure of the bottom side of the guide rod 4 can be used to sleeve or mount the return spring 5, ensuring that the return spring 5 will not be displaced during the working process, so that the return spring 5 can be compressed when the button 2 is pressed, and the spring can push the guide rod 4 and the pressing rod 7 back to the initial position when the button is released.

[0046] The upper part of the rear cover plate 6 is provided with a protrusion C for sleeving the return spring 5;

[0047] Specifically, the protrusion C provides a stable sleeving point for the return spring 5, ensuring that the return spring 5 will not be displaced during the working process, thereby ensuring the stability and reliability of the return spring 5.

[0048] The rear cover plate 6 and the bottom of the base 3 are fixed by screwing or rivet connection;

[0049] Specifically, the rear cover plate 6 and the base 3 are fixed by screwing or rivet connection, etc., which is convenient for disassembly and maintenance.

[0050] The top end of the guide hole A is provided with a limiting step 11;

[0051] Specifically, the limiting step 11 ensures the correct position of the guide rod 4 in the guide hole A, preventing the guide rod 4 from moving excessively or coming out of the guide hole A during operation.

[0052] Working process: when external force acts on the button 2, the button 2 drives the pressing rod 7 to move downward against the elastic force of the spring 9 through the guide rod 4, the pressing rod 7 contacts and triggers the micro switch 1, realizing the conduction or disconnection of the circuit; after the external force is removed, the return spring 5 and the auxiliary spring 9 jointly act on the button 2, the guide rod 4 and the pressing rod 7 to reset upward, the micro switch 1 returns to the initial state, and waits for the next trigger.

[0053] The micro-motion combined button switch has the advantages that compared with the traditional micro-motion switch, the operability of the micro-motion combined button switch is significantly enhanced, circuit control can be more accurately and conveniently realized, the overstroke of the micro-motion switch is increased, the structure reliability is effectively improved by adopting the double guide rods and double reset springs, the anti-interference capability of the switch is enhanced, the service life is prolonged, and the stability and accuracy of circuit conversion are ensured.

Claims

1. A micro-motion combination push button switch, characterized in that, include: Button (2); The base (3) has a cross-sectional view of a U-shaped structure, and guide holes A are provided on the symmetrical protrusions B on both sides of the base (3); Micro switch (1): It is located in the middle of the base (3) and is fixed to the base (3) by a positioning pin (10); Guide rod (4): It is inserted into the guide hole A and its upper end is fixed inside the button (2); Rear cover plate (6): fixedly connected to the bottom of the base (3), Reset spring (5): The upper end is sleeved with the bottom end of the guide rod (4), and the lower end is sleeved with the upper end of the rear cover plate (6); Pressure plate (8): It is located directly above the micro switch (1) and fixed inside the button (2); a limiting hole is provided in its middle; Press rod (7): It is inserted into the limiting hole, and an auxiliary spring (9) is sleeved on its top end. The other end of the auxiliary spring (9) abuts against the button (2).

2. A micro-motion combination push button switch as described in claim 1, characterized in that: The upper end of the guide rod (4) is a connecting part (12), which is a threaded structure. The connecting part (12) is fixed by screwing through the threaded hole of the button (2). The bottom end of the guide rod (4) is provided with a straight groove, and the bottom side of the guide rod (4) is a stepped structure.

3. A micro-motion combination push button switch as described in claim 1, characterized in that: The upper end of the pressing rod (7) is provided with a first limiting platform (13), and the lower end is provided with a guide part (14); the top of the first limiting platform (13) is provided with a second limiting platform (15) for connecting the auxiliary spring (9).

4. A micro-motion combination push button switch as described in claim 1, characterized in that: The upper part of the rear cover plate (6) is provided with a protrusion C for fitting the reset spring (5).

5. The micro-motion combination push button switch as described in claim 1, characterized in that: The rear cover plate (6) is fixed to the bottom of the base (3) by screwing or riveting.

6. A micro-motion combination push button switch as described in claim 1, characterized in that: The top of the guide hole A is provided with a limiting step (11).

7. A micro-motion combination push button switch as described in claim 1, characterized in that: The cross-sectional view of the button (2) is concave.

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