Micro switches and micro switch groups

Abstract

The present invention discloses a micro switch and a micro switch group, which are composed of an upper static contact, a lower static contact, a switch reed, a support frame, a fixed base, a switch button and a support spring. The present invention also discloses a micro switch group, the housing is an integral housing, and the interior is composed of four of the above-mentioned micro switches. The beneficial effects of the present invention are: the contact form in the entire action cycle process always maintains line contact, so that the sensitivity reaches the highest, that is, there is no "hanging" phenomenon, the contact reliability is guaranteed, the action sensitivity is improved, the installation mode of the integral housing reduces the weight of the micro switch, improves the synchronization of the micro switch action, and makes the product performance stable.

Description

Technical Field

[0001] The invention relates to a micro switch and a micro switch group. Background Art

[0002] Micro switches (groups), also known as quick-action switches, are characterized by the fact that the active end of the switch can switch quickly and sensitively under the action of the instantaneous mechanism inside the micro switch. However, due to structural reasons, the contact form between the reed assembly and the support frame is surface contact, the conversion is not sensitive or the sensitivity is not high. When the pressing drive speed is slow, the common end will be in a "suspended" state where the normally closed end and the normally open end are not connected. Micro switches are generally driven by mechanical mechanisms. Some systems and equipment have slow driving speeds. At this time, this state will have an adverse effect on the system and equipment, and even cause failures; at the same time, this state will also shorten its service life due to the aggravation of the arcing of the micro switch. The micro switch group with a split housing installation mode not only increases the volume of the micro switch and increases the overall weight of the micro switch, but also the contact conversion time of each group of micro switches is quite different, resulting in poor synchronization of the micro switch action. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of suspended micro switches in the prior art, reduce the volume of the micro switches, reduce the overall weight of the micro switches, and improve the synchronization of the micro switch actions, thereby providing a new type of micro switch and micro switch group.

[0004] In order to achieve this purpose, the technical solution of the present invention is as follows: a micro switch and a micro switch group, which are composed of an upper static contact, a lower static contact, a micro switch group, a switch reed (including a supporting spring), a support frame, a fixed base, and a switch button. The upper static contact and the lower static contact are both arranged on the left side of the fixed base, the upper static contact is located directly above the lower static contact, and the upper static contact is vertically separated from the lower static contact; the support frame is arranged on the right side of the fixed base. The support frame is in a U-shaped structure, the support frame has a left frame, a right frame and a frame connecting portion between the left frame and the right frame, the left frame extends obliquely from the left edge of the frame connecting portion to the upper left, and the right frame extends obliquely from the right edge of the frame connecting portion to the upper left; the switch reed has a left reed and a right reed, the left reed is arranged between the upper static contact and the lower static contact, and the top surface of the left end of the left reed The bottom surface of the upper static contact is abutted against, and the bottom surface of the left end of the left part of the spring sheet is vertically separated from the top surface of the lower static contact, the right part of the spring sheet is arranged directly above the supporting frame, the left part of the frame and the right part of the frame jointly support the right part of the spring sheet, and the right end of the right part of the spring sheet is fixedly connected to the right part of the frame; the supporting spring sheet is arranged below the left part of the spring sheet, the supporting spring sheet extends in the left and right directions, the left end of the supporting spring sheet abuts against the left part of the spring sheet, and the right end of the supporting spring sheet is fixedly connected to the left part of the frame, and the supporting spring sheet provides an upward supporting force for the left part of the spring sheet; the switch button is arranged directly above the right part of the spring sheet, and the switch button is moved downward, and the switch button presses down the right part of the spring sheet, and the right part of the spring sheet drives the left part of the frame and the right part of the frame to bend downward, and also drives the left part of the spring sheet to move downward, and the left end of the left part of the spring sheet is separated from the upper static contact and contacts with the lower static contact. The micro switch seat, each group of micro switches are respectively installed in the corresponding grooves of the micro switch seat, and each group of micro switches inside it is independent and does not affect each other, forming an integral shell installation mode.

[0005] As a preferred solution for the micro switch, a first connecting hole is formed on the frame connecting portion, a first connected hole corresponding to the first connecting hole is formed on the fixed base, and a first connecting member is provided between the first connected hole and the first connecting hole to fix the support frame to the fixed base.

[0006] As a preferred solution for the micro switch, a first clamping portion is formed on the right side of the right part of the frame, and a first clamped portion corresponding to the first clamping portion is formed at the right end of the right part of the spring sheet, and the first clamped portion and the first clamping portion are engaged with each other to achieve a fixed connection between the right end of the right part of the spring sheet and the right part of the frame.

[0007] As a preferred solution for the micro switch, a second clamping portion is formed on the left side of the left part of the reed, and a second clamped portion corresponding to the second clamping portion is formed on the right end of the supporting spring sheet, and the second clamped portion is clamped in the second clamping portion to achieve a fixed connection between the right end of the supporting spring sheet and the left part of the frame.

[0008] As a preferred solution of the micro switch, the right end of the supporting spring is in line contact with the left part of the frame.

[0009] As a preferred solution of the micro switch, the micro switch group is composed of four micro switches. Each group of micro switches is respectively installed in the corresponding slot of the micro switch seat, and each group of micro switches inside is independent and does not affect each other, which reduces the volume of the micro switch, reduces the overall weight of the micro switch, and improves the synchronization of the micro switch action.

[0010] Compared with the prior art, the beneficial effects of the present invention are at least that: the contact form in the entire action cycle always maintains line contact, so that the sensitivity is maximized, that is, there is no "hanging" phenomenon, the contact reliability is guaranteed, the action sensitivity is improved, the installation mode of the integral shell reduces the weight of the micro switch, improves the synchronization of the micro switch action, and makes the product performance stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0012] Figure 2 It is a schematic structural diagram of an embodiment of the present invention (with an external cover).

[0013] Figure 3 It is a schematic structural diagram of a support frame in one embodiment of the present invention.

[0014] Figures 4 to 6 It is a structural schematic diagram of a micro switch base in one embodiment of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below by means of specific embodiments connected with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0016] See also Figures 1 to 3 , shown in the figure is a micro switch.

[0017] The micro switch is composed of an upper static contact 1, a lower static contact 2, a switch reed 3, a support frame 4, a fixed base 5 and a switch button 6.

[0018] The upper stationary contact 1 and the lower stationary contact 2 are both arranged at the left part of the fixed base 5. The upper stationary contact 1 is located directly above the lower stationary contact 2. The upper stationary contact 1 is vertically spaced from the lower stationary contact 2.

[0019] The support frame 4 is arranged on the right side of the fixed base 5. The support frame 4 is a U-shaped structure. The support frame 4 has a frame left portion 41, a frame right portion 42, and a frame connecting portion 43 between the frame left portion 41 and the frame right portion 42. The frame left portion 41 extends obliquely along the upper left side from the left edge of the frame connecting portion 43. The frame right portion 42 extends obliquely along the upper left side from the right edge of the frame connecting portion 43. The frame left portion 41 and the frame right portion 42 have the ability to bend downward. In this embodiment, the support frame 4 is a bent metal sheet.

[0020] A first connection hole is formed on the frame connecting portion 43 . A first connected hole corresponding to the first connection hole is formed on the fixing base 5 . A first connecting member is provided between the first connected hole and the first connection hole to fix the support frame 4 on the fixing base 5 .

[0021] The switch reed 3 has a left reed portion 31 and a right reed portion 32. The left reed portion 31 is arranged between the upper stationary contact 1 and the lower stationary contact 2. The top surface of the left end of the left reed portion 31 abuts against the bottom surface of the upper stationary contact 1, and the bottom surface of the left end of the left reed portion 31 is vertically spaced from the top surface of the lower stationary contact 2. That is, when the switch button 6 is not pressed down, the left end of the left reed portion 31 contacts the upper stationary contact 1.

[0022] The right part 32 of the spring sheet is arranged directly above the support frame 4. The left part 41 of the frame and the right part 42 of the frame jointly support the right part 32 of the spring sheet. Preferably, the right part 32 of the spring sheet is an Ω-shaped structure with an opening facing upward. The right end of the right part 32 of the spring sheet is fixedly connected to the right part 42 of the frame. In this embodiment, a first engaging portion (such as a hook groove) is formed on the right side of the right part 42 of the frame. A first engaged portion (such as a hook) corresponding to the first engaging portion is formed at the right end of the right part 32 of the spring sheet. The first engaged portion and the first engaging portion are engaged with each other to achieve a fixed connection between the right end of the right part 32 of the spring sheet and the right part 42 of the frame.

[0023] The supporting spring piece 7 is arranged below the left part 31 of the spring sheet. The supporting spring piece 7 extends in the left-right direction. The left end of the supporting spring piece 7 is against the middle position of the left part 31 of the spring sheet, and the right end of the supporting spring piece 7 is fixedly connected to the left part 41 of the frame. The left part 31 of the spring sheet is similar to a cantilever beam structure, and the supporting spring piece 7 provides an upward supporting force to the left part 31 of the spring sheet to ensure that the left part 31 of the spring sheet does not sink due to its gravity. In this embodiment, a second clamping portion (such as a clamping groove) is formed on the left side of the left part 31 of the spring sheet. A second clamped portion (such as a card) corresponding to the second clamping portion is formed at the right end of the supporting spring piece 7. The second clamped portion is clamped into the second clamping portion to achieve a fixed connection between the right end of the supporting spring piece 7 and the left part 41 of the frame. In addition, the right end of the supporting spring piece 7 is in line contact with the left part 41 of the frame, which maximizes the action sensitivity of the micro switch and ensures contact reliability.

[0024] The switch button 6 is arranged just above the right part 32 of the reed. The switch button 6 moves up and down. When the switch button 6 is moved downward, the switch button 6 presses down the right part 32 of the reed, and the right part 32 of the reed drives the left part 41 of the frame body and the right part 42 of the frame body to bend downward, and also drives the left part 31 of the reed to move downward. The left end of the left part 31 of the reed is separated from the upper static contact 1, and contacts the lower static contact 2 (the top surface of the left end of the left part 31 of the reed is vertically separated from the bottom surface of the upper static contact 1, and the bottom surface of the left end of the left part 31 of the reed is against the top surface of the lower static contact 2).

[0025] See also Figures 4 to 6 , the micro switch group 8 is composed of a plurality of the above-mentioned micro switches. In this embodiment, the number of the micro switches is four groups. The four groups of the above-mentioned micro switches are arranged side by side. Each group of micro switches is respectively installed in a slot corresponding to a micro switch seat. The four groups of micro switches 81, 82, 83, and 84 are respectively installed in the housing of a micro switch seat to form a multi-way modular micro switch. The above-mentioned micro switches are independent and do not affect each other, which reduces the volume and weight.

[0026] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. Micro switch, characterized in that: The switch comprises an upper static contact, a lower static contact, a switch reed, a support frame, a fixed base, a switch button and a support spring, wherein the upper static contact and the lower static contact are both arranged on the left part of the fixed base, the upper static contact is located directly above the lower static contact, and the upper static contact is vertically separated from the lower static contact; the support frame is arranged on the right part of the fixed base, the support frame is in a U-shaped structure, the support frame comprises a left frame portion, a right frame portion and a frame connecting portion between the left frame portion and the right frame portion, the left frame portion extends obliquely along the upper left from the left edge of the frame connecting portion, and the right frame portion extends obliquely along the upper left from the right edge of the frame connecting portion; the switch reed comprises a left reed portion and a right reed portion, the left reed portion is arranged between the upper static contact and the lower static contact, the top surface of the left end of the left reed portion abuts against the bottom surface of the upper static contact, and the left reed portion The bottom surface of the left end of the spring is vertically separated from the top surface of the lower static contact, and the right part of the spring is arranged directly above the supporting frame, and the left part of the frame and the right part of the frame jointly support the right part of the spring, and the right end of the right part of the spring is fixedly connected to the right part of the frame; the supporting spring is arranged below the left part of the spring, and the supporting spring extends along the left and right directions, and the left end of the supporting spring rests on the left part of the spring, and the right end of the supporting spring is fixedly connected to the left part of the frame, and the supporting spring provides an upward supporting force for the left part of the spring; the switch button is arranged directly above the right part of the spring, and the switch button is moved downward, and the switch button presses down the right part of the spring, and the right part of the spring drives the left part of the frame and the right part of the frame to bend downward, and also drives the left part of the spring to move downward, and the left end of the left part of the spring disengages from the upper static contact and contacts with the lower static contact.

2. The micro switch according to claim 1, characterized in that: A first connecting hole is formed on the frame connecting portion, a first connected hole corresponding to the first connecting hole is formed on the fixing base, and a first connecting member is provided between the first connected hole and the first connecting hole to fix the support frame on the fixing base.

3. The micro switch according to claim 1, characterized in that: A first clamping portion is formed on the right side of the right part of the frame, and a first clamped portion corresponding to the first clamping portion is formed at the right end of the right part of the spring sheet, and the first clamped portion and the first clamping portion are mutually clamped to achieve a fixed connection between the right end of the right part of the spring sheet and the right part of the frame.

4. The micro switch according to claim 1, characterized in that: A second clamping portion is formed on the left side of the left part of the spring sheet, and a second clamped portion corresponding to the second clamping portion is formed on the right end of the supporting spring sheet, and the second clamped portion is clamped in the second clamping portion to achieve a fixed connection between the right end of the supporting spring sheet and the left part of the frame.

5. The micro switch according to claim 4, characterized in that: The right end of the supporting spring is in line contact with the left part of the frame.

6. Micro switch group, characterized in that, The micro switch is composed of a plurality of micro switches according to any one of claims 1 to 5.

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