Microswitch with mistaken touch prevention structure

Abstract

The utility model discloses a microswitch with a mistaken touch prevention structure, which relates to the technical field of microswitches, aims to solve the technical problem of mistaken touch of a push switch part of the microswitch, and comprises a microswitch shell, a rotating shaft is arranged on the microswitch shell, a lever is rotatably connected to the periphery of the rotating shaft, and the lever is provided with a handle. A push switch is arranged on the side, facing the microswitch shell, of the lever, a common end, a normally-closed end and a normally-open end are arranged on the microswitch shell, static contacts are connected to one side of the normally-closed end and one side of the normally-open end, a contact elastic piece part and a movable contact are arranged between the common end and the normally-closed end and between the common end and the normally-open end, and an anti-clamping structure is arranged at one end of the push switch. The bottom of the anti-clamping structure is connected with a separating piece, and an abutting piece is fixed to one side of the anti-clamping structure. According to the utility model, the risk of blocking caused by aging and dust accumulation is greatly reduced, the push switch can be timely and smoothly reset, and the problem that the push switch part of the microswitch is mistakenly contacted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro switches, and more specifically to a micro switch with an anti-mistouch structure. Background Art

[0002] The micro switch mainly uses a lever to press the push switch, causing the spring to deform, and then realize the power-on conversion of the circuit. The push switch adopts a limited sliding design to ensure the accuracy of the operation. However, in actual use, this structure is prone to cause many problems. In an industrial production environment, the micro switch is exposed to a space with a lot of dust and impurities for a long time, and fine particles will gradually invade the sliding groove of the push switch. Over time, these dust and impurities continue to accumulate, like fine "sandpaper", which not only increases the friction during sliding, but also may form hard blocks in the groove, hindering the normal sliding of the push switch. At the same time, after a long period of frequent operation, the micro switch will inevitably age and wear. The surface of the aging push switch becomes rough and the size may also change, further exacerbating the jamming problem during sliding. When the push switch jams, the switch cannot be reset in time and smoothly after the pressing operation, causing mis-contact. In view of this, we propose a micro switch with an anti-mis-touch structure. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a micro switch with an anti-misconducting structure to solve the technical problem of misconduct in the pressing switch part of the current micro switch.

[0004] To solve the above technical problems, the utility model provides the following technical solutions: a micro switch with an anti-mistouch structure, comprising a micro switch housing, a rotating shaft is provided on the micro switch housing, a lever is rotatably connected to the outer periphery of the rotating shaft, a push switch is provided on the lever facing the micro switch housing side, a common end, a normally closed end and a normally open end are provided on the micro switch housing, a static contact is connected to one side of the normally closed end and the normally open end, a contact spring part and a moving contact are provided between the common end and the normally closed end and the normally open end, an anti-stuck structure is provided at one end of the push switch, the anti-stuck structure comprises a rotating cylinder, a torsion spring is provided inside the rotating cylinder, a protruding head is fixed to the outer periphery of the rotating cylinder, the protruding head contacts with one side of the push switch, a separating piece is connected to the bottom of the rotating cylinder, and a resisting piece is fixed to one side of the protruding head.

[0005] Preferably, the push switch slides within a limited position inside the microswitch housing, the outward side of the push switch contacts one side of the lever, the inward side of the push switch contacts one end of the contact spring part, a recessed step is provided on the top of the push switch, and the contact spring part is connected to an extension plate.

[0006] Preferably, the torsion spring is a spiral coil structure, the outer end of the torsion spring is a hook, the hook is bonded and fixed to the inner wall of the rotating cylinder, and one side of the protruding head is in contact with one side of the recessed step.

[0007] Preferably, the center of the rotating cylinder is rotatably connected to a central axis, which consists of a rod body and a through slot. The inner periphery of the through slot is embedded and fixed with one end of the center of the torsion spring, and the bottom end of the rod body penetrates the rotating cylinder and is fixed to the micro switch housing.

[0008] Preferably, the separation member includes a connecting shaft, the top end of the connecting shaft is eccentrically connected to the bottom of the rotating cylinder, a bending plate is fixed to the outer periphery of the connecting shaft, a separation arrow is fixed to the end of the bending plate, and the separation arrow is located between the push switch and the contact spring part.

[0009] Preferably, the abutment member comprises a bent plate, and an arc-pressing seat is fixed to the end of the bent plate.

[0010] Preferably, one end of the extension plate is in contact with the arc-pressing seat and has an arc-surface structure, and the arc-pressing seat has an arc-shaped structure.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model uses the anti-stuck structure set by the push switch, and through the coordinated operation of the rotating cylinder, the twisting spring and the central axis, when the lever pushes the push switch to move, the protruding head rotates to drive the rotating cylinder to rotate, and the twisting spring is curled and compressed. After the power is turned on, the twisting spring generates a lifting force to help the push switch get out of the slide position where it may get stuck, greatly reducing the risk of getting stuck due to aging and dust accumulation, ensuring that the push switch can be reset in time and smoothly, and solving the problem of miscontact in the push switch part of the micro switch.

[0013] 2. The utility model also improves the stability of power supply by rotating the rotating cylinder during power supply to rotate the separation arrow outward, and the arc pressure seat and the arc surface of the extension plate are pressed and matched, and when power supply is canceled, the rotating cylinder rotates in the opposite direction, driving the separation arrow to insert between the push switch and the contact spring part, separating the two, effectively avoiding false contact caused by friction or attractive forces such as sticky foreign matter, ensuring the accuracy of the micro switch's control of the circuit on and off, and further solving the problem of false contact in the push switch part of the micro switch.

[0014] 3. The utility model also drives the separation arrow to rotate outward by rotating the rotating cylinder during the power-on process, which will cause the arc pressure seat and the arc surface to have a pressing effect, and the contact spring part will have a pressing effect, thereby improving the stability of the power-on state, and automatically separate when the power is off, which is in coordination with the above-mentioned realization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model without the outer shell;

[0017] Figure 3 It is a schematic diagram of the connection structure between the anti-stuck structure and the push switch in the utility model;

[0018] Figure 4 It is a schematic diagram of another axial structure between the anti-stuck structure and the push switch in the utility model;

[0019] Figure 5 It is a half-section structural schematic diagram of the rotating cylinder in the utility model;

[0020] Figure 6 It is a structural schematic diagram of the torsion spring part in the utility model.

[0021] Explanation of the numbers in the figure: 1. micro switch housing; 2. rotating shaft; 3. lever; 4. push switch; 5. common terminal; 6. normally closed terminal; 7. normally open terminal; 8. static contact; 9. anti-stuck structure; 10. separation piece; 11. abutment piece; 12. extension plate; 901. rotating cylinder; 902. torsion spring; 93. center axis; 931. rod body; 932. through groove; 904. protrusion; 101. connecting shaft; 102. bending plate; 103. separation arrow; 111. bending extension plate; 112. arc pressure seat. DETAILED DESCRIPTION

[0022] like Figures 1 to 6 As shown, the utility model relates to a micro switch with an anti-mistouch structure, including a micro switch housing 1, and a rotating shaft 2 carefully arranged on the micro switch housing 1. The rotating shaft 2 is the key hub for realizing the flexible rotation of a lever 3. The rotating shaft 2 is made of high-strength, wear-resistant metal material to ensure that smooth rotation performance can be maintained during long-term and frequent operation, laying a foundation for the stable operation of the entire micro switch. The lever 3 is tightly sleeved on the outer periphery of the rotating shaft 2, and a precise rotation connection is formed between the two. The lever 3 is usually made of engineering plastics or metal materials with certain elasticity and strength, and its design shape and size are optimized to achieve efficient transmission and precise control of the pressing action.

[0023] On the side of the lever 3 facing the microswitch housing 1, a push switch 4 is precisely installed. The push switch 4 serves as a direct actuator for realizing the on-off control of the circuit. The connection method between the push switch 4 and the inside of the microswitch housing 1 adopts a limited sliding design. On the one hand, this design ensures that the push switch 4 can move smoothly along a predetermined trajectory when subjected to the force of the lever 3, avoiding shaking or deviation, thereby ensuring the accuracy of the control action; on the other hand, the limited sliding connection also provides the necessary support and guidance for the push switch 4, so that it is not easily damaged during frequent pressing operations, thereby extending the service life of the microswitch. The outward side of the push switch 4 is in close contact with one side of the lever 3. When external pressure is applied to the lever 3, the lever 3 rotates around the rotating axis 2, thereby accurately transmitting the pressure to the push switch 4, pushing it to slide inside the microswitch housing 1, thereby realizing the on-off control of the circuit.

[0024] A common terminal 5, a normally closed terminal 6 and a normally open terminal 7 are also provided on the micro switch housing 1. These three ports are the key interfaces for connecting the micro switch to the external circuit. One side of the normally closed terminal 6 and the normally open terminal 7 are connected to a static contact 8. The static contact 8 is usually made of a metal material with high conductivity and high wear resistance, such as silver alloy. A contact spring part and a moving contact are provided between the common terminal 5 and the normally closed terminal 6 and the normally open terminal 7. The moving contact is provided on one side of the contact spring part. The contact spring part is composed of a spring and a spring, etc. This is the prior art, so it will not be described in detail.

[0025] When the lever 3 is not subjected to external pressure, the common terminal 5 and the normally closed terminal 6 are electrically connected through the static contact 8, and the circuit is in a conducting state; when the lever 3 is subjected to external force and rotates, pushing the press switch 4 to operate, the electrical connection between the common terminal 5 and the normally closed terminal 6 is disconnected, and the contact spring part is bent and conductive by the spring, so that the common terminal 5 is electrically connected to the normally open terminal 7, and the circuit state is switched, thereby completing the precise control of the external circuit.

[0026] In order to avoid accidental contact caused by jamming, the inner side of the push switch 4 contacts one end of the contact spring part, a recessed step is provided on the top of the push switch 4, and an anti-jamming structure 9 is provided at one end of the push switch 4.

[0027] The anti-stuck structure 9 includes a rotating cylinder 901, and a torsion spring 902 is arranged inside the rotating cylinder 901. The torsion spring 902 is a spiral ring structure. The outer end of the torsion spring 902 is a hook, which is bonded and fixed to the inner wall of the rotating cylinder 901. The center of the rotating cylinder 901 is rotatably connected with a central axis 93. The central axis 93 is composed of a rod body 931 and a through groove 932. The inner periphery of the through groove 932 is embedded and fixed with one end of the center of the torsion spring 902. The bottom end of the rod body 931 penetrates the rotating cylinder 901 and is fixed to the micro switch housing 1. A protruding head 904 is fixed to the outer periphery of the rotating cylinder 901, and one side of the protruding head 904 is in contact with one side of the recessed step.

[0028] Working principle: When the lever 3 pushes the push switch 4, the push switch 4 moves. During the movement, the protruding head 904 contacts the recessed step, causing the protruding head 904 to rotate, causing the rotating cylinder 901 to rotate. At this time, the internal torsion spring 902 is curled and compressed. When the power is turned on (the power-on state is as shown in FIG. Figure 2 As shown), the twisted spring 902 will generate a force to lift the push switch 4, preventing the push switch 4 from aging and getting stuck in the slide slot, causing the switch to be accidentally touched and unable to stop starting.

[0029] In order to further improve safety, a separating piece 10 is connected to the bottom of the rotating cylinder 901 , a stop piece 11 is fixed to one side of the protruding head 904 , and an extension plate 12 is connected to the contact spring piece portion.

[0030] The separating member 10 comprises a connecting shaft 101, the top end of which is eccentrically connected to the bottom of the rotating cylinder 901, a bending plate 102 is fixed to the outer periphery of the connecting shaft 101, a separating arrow 103 is fixed to the end of the bending plate 102, the separating arrow 103 is located between the pressing switch 4 and the contact spring part, one side of the separating arrow 103 is in contact with the spring part, and has an arc-notch for easy insertion.

[0031] The abutment 11 comprises a bending plate 111 , an arc pressing seat 112 is fixed to the end of the bending plate 111 , one end of the extension plate 12 contacts the arc pressing seat 112 and is an arc surface structure, and the arc pressing seat 112 is an arc-shaped structure.

[0032] Working principle: During the power-on process, the rotation of the rotating cylinder 901 will drive the separation arrow 103 to rotate outward, and the arc pressing seat 112 will approach the arc surface for pressure. The arc pressing seat 112 and the arc surface cooperate with each other to improve the stability of the power-on state. When the power-on process is canceled, the rotating cylinder 901 rotates in the opposite direction, driving the separation arrow 103 to move inward, that is, to move in the direction between the push switch 4 and the contact spring part, and further separating the push switch 4 from the contact spring part, avoiding static electricity, friction or attraction caused by foreign matter to affect normal separation, and avoiding false contact. At this time, the synchronous arc pressing seat 112 separates from the arc surface and no longer produces pressure.

[0033] It should be noted that during the insertion and separation process, the separation arrow 103 and the bending plate 102 rotate accordingly. The arc design of the bending plate 102 allows it to continuously move away from the contact spring portion during the rotation process, so that no motion interference occurs.

[0034] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A micro switch with an anti-mistouch structure, characterized in that: The invention comprises a micro switch housing (1), wherein a rotating shaft (2) is arranged on the micro switch housing (1), a lever (3) is rotatably connected to the outer periphery of the rotating shaft (2), a push switch (4) is arranged on the side of the lever (3) facing the micro switch housing (1), a common end (5), a normally closed end (6) and a normally open end (7) are arranged on the micro switch housing (1), a static contact (8) is connected to one side of the normally closed end (6) and the normally open end (7), a contact spring part and a moving contact are arranged between the common end (5) and the normally closed end (6) and the normally open end (7), and an anti-stuck structure (9) is arranged at one end of the push switch (4); The anti-stuck structure (9) comprises a rotating cylinder (901), a torsion spring (902) is arranged inside the rotating cylinder (901), a protruding head (904) is fixed on the outer periphery of the rotating cylinder (901), the protruding head (904) is in contact with one side of the push switch (4), a separating piece (10) is connected to the bottom of the rotating cylinder (901), and a resisting piece (11) is fixed on one side of the protruding head (904).

2. A micro switch with an anti-mistouch structure according to claim 1, characterized in that: The push switch (4) slides within the micro switch housing (1) in a limited manner, the outward side of the push switch (4) contacts the side of the lever (3), and the inward side of the push switch (4) contacts one end of the contact spring part. A recessed step is provided at the top of the push switch (4), and the contact spring part is connected to an extension plate (12).

3. A micro switch with an anti-mistouch structure according to claim 2, characterized in that: The torsion spring (902) is a spiral coil structure, the outer end of the torsion spring (902) is a hook, the hook is bonded and fixed to the inner wall of the rotating cylinder (901), and one side of the protruding head (904) is in contact with one side of the recessed step.

4. A micro switch with an anti-mistouch structure according to claim 3, characterized in that: The center of the rotating cylinder (901) is rotatably connected to a central shaft (93), the central shaft (93) being composed of a rod body (931) and a through slot (932), the inner periphery of the through slot (932) being embedded and fixed to one end of the center of the torsion spring (902), the bottom end of the rod body (931) passing through the rotating cylinder (901) and being fixed to the micro switch housing (1).

5. The micro switch with an anti-mistouch structure according to claim 4, characterized in that: The separation member (10) comprises a connecting shaft (101), the top end of the connecting shaft (101) being eccentrically connected to the bottom of the rotating cylinder (901), a bending plate (102) being fixed to the outer periphery of the connecting shaft (101), a separation arrow (103) being fixed to the end of the bending plate (102), and the separation arrow (103) being located between the push switch (4) and the contact spring portion.

6. A micro switch with an anti-mistouch structure according to claim 5, characterized in that: The abutment member (11) comprises a bending plate (111), and an arc-pressing seat (112) is fixed to the end of the bending plate (111).

7. A micro switch with an anti-mistouch structure according to claim 6, characterized in that: One end of the extension plate (12) contacts the arc-pressing seat (112) and is a curved surface structure, and the arc-pressing seat (112) is an arc-shaped structure.

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