A micro switch with replaceable trigger rod

Abstract

The present invention discloses a micro switch with a replaceable trigger rod, comprising a base and a cover plate, wherein a mounting groove and a rod groove are provided on the base, a button and a moving contact piece arranged below the button are provided in the mounting groove, a normally closed static contact piece and a normally open static contact piece are respectively provided above and below the end of the moving contact piece, a notch connected to the rod groove is provided on the cover plate, a trigger rod is installed in the rod groove, the button is located below the trigger rod, a first fixing plate located inside and a second fixing plate located outside are provided in the notch, the first fixing plate is detachably fixedly installed on and blocked outside the rod groove horizontally to prevent the trigger rod from detaching from the rod groove, and the second fixing plate is detachably fixedly installed in the notch vertically to prevent the first fixing plate from detaching from the notch. The beneficial effect of the present invention is that after the first fixing plate and the second fixing plate are removed, the trigger rod arranged in the rod groove can be replaced separately, thereby saving the use cost of the micro switch.

Description

Technical Field

[0001] The invention belongs to the technical field of micro switches, and in particular relates to a micro switch with a replaceable handle. Background Art

[0002] A micro switch is a small electrical switch, usually used to control the switch state of a circuit. It can complete the switch action with a small displacement and a short time, and its overall size is small, so it is used in industrial equipment, security equipment, medical equipment, office equipment, etc.

[0003] The micro switch is provided with a pressable button, and below the button is a spring sheet elastically arranged inside the micro switch. A moving contact piece is transmission-connected to the end of the spring sheet, and a normally closed static contact piece and a normally open static contact piece are respectively provided above and below the moving contact piece. When the button is pressed, the spring sheet drives the moving contact piece to move, switching the static contact piece it contacts, thereby realizing the switching of the circuit.

[0004] In actual use, according to the structural characteristics of the electronic device, it is often necessary to adjust the position and amplitude of the button on the micro switch when it is pressed. In view of this, the existing micro switch is usually equipped with a specific type of trigger rod, and the activation of this type of micro switch is achieved by pressing the end of the trigger rod. However, after being pressed multiple times, the trigger rod will undergo irreversible deformation, and the button may not be pressed or the button is always in a pressed state, thereby affecting the normal use of the micro switch.

[0005] However, the trigger rods on the existing micro switches are mostly unable to be removed separately, so when the trigger rod is deformed and damaged, the entire micro switch can only be replaced, which is inconvenient and increases the cost of using the micro switch. In addition, the unreplaceable trigger rod is not convenient for operators to replace the type of trigger rod according to actual needs. Therefore, it is necessary to specifically design a micro switch that can conveniently replace the trigger rod. Summary of the invention

[0006] The trigger rod of the existing micro switch installed inside the electronic device cannot be removed separately. During the long-term use of the micro switch, once the trigger rod is deformed and damaged, the entire micro switch needs to be replaced, which is inconvenient and increases the use cost of the electronic device. To solve this problem, the following invention is proposed:

[0007] A micro switch with a replaceable trigger rod comprises a base and a cover plate fixedly connected to each other, wherein a mounting slot is provided on the base, a button is provided in the mounting slot, and a moving contact piece elastically connected to the mounting slot is provided below the button, and a normally closed static contact piece and a normally open static contact piece are respectively provided above and below the end of the moving contact piece, and when the button is pressed, the moving contact piece is driven to move from contact with the normally closed static contact piece to contact with the normally open static contact piece, a rod slot is provided on the base, a notch connected to the rod slot is provided on the cover plate, a trigger rod is installed in the rod slot, the button is located below the trigger rod, and when the trigger rod is pressed downward, the button is driven to move downward, and a first fixing plate located inside and a second fixing plate located outside are provided in the notch, the first fixing plate is horizontally detachably fixedly installed on and blocks the outside of the rod slot to prevent the trigger rod from detaching from the rod slot, and the second fixing plate is vertically detachably fixedly installed in the notch to prevent the first fixing plate from detaching from the notch.

[0008] When the trigger rod is damaged after being pressed multiple times and needs to be removed, the second fixing plate is first removed vertically from the slot, and then the first fixing plate is removed horizontally from the slot, so that the rod slot is connected to the outside. At this time, the trigger rod can be directly removed from the rod slot and replaced, which greatly reduces the use cost of the trigger rod.

[0009] Furthermore, the base is provided with a plurality of transverse sockets, and the first fixing plate is provided with plug posts that fit into the sockets; the groove is provided with a vertical slot located on the outside of the first fixing plate, and the outside of the second fixing plate is provided with a vertical plug plate that matches the vertical slot, so that the second fixing plate can be removably installed on the outer side of the first fixing plate.

[0010] Furthermore, a protruding first pull plate is provided on the top of the first fixing plate, and a protruding second pull plate is provided on the outer side of the second fixing plate. After buckling the first pull plate, the first fixing plate can be pulled out horizontally from the slot, and similarly, buckling the second pull plate can pull the second fixing plate out vertically from the slot.

[0011] Furthermore, the trigger rod includes a rod handle located outside the rod groove and a rod plug plate located inside the rod groove, the button is arranged below the rod handle, horizontally extending positioning plug plates are arranged on both sides of the rod plug plate, the rod groove and the first fixed plate are provided with positioning slots for inserting the positioning plug plates, the positioning plug plates are inserted into the positioning slots, so that the rod plug plate is stably fixed in the rod groove, and at the same time, the first fixed plate is further prevented from disengaging from the slot in a manner other than horizontally.

[0012] Furthermore, the end of the handle is provided with a roller, an arc head or an extension head. The roller, arc head and extension head are mainly used in conjunction with different types of electronic equipment, so that the operator can first install the micro switch and then install the matching components on the end of the handle according to actual needs.

[0013] Furthermore, there are a plurality of rod grooves, each of which is provided with a protruding head. When the trigger rod is not pressed, the protruding head abuts against the trigger rod, and the protruding head prevents the trigger rod from tilting excessively toward the rear side.

[0014] Furthermore, the button includes a button head and a button seat, the button head is provided with a connecting column, the button seat is provided with a connecting groove, the connecting groove matches the connecting column to detachably fix the button head and the button seat, and the pressing stroke of the trigger rod can be changed by replacing button heads of different height sizes.

[0015] Furthermore, a fixing hole is provided on the base, and a fixing piece is provided on the cover plate. The end of the fixing piece is threadedly connected in the fixing hole to fix the cover plate and the base. After the fixing piece is removed, the cover plate and the base can be separated.

[0016] The present invention proposes a micro switch with a replaceable trigger rod, which is provided with an independent rod groove on the base, the trigger rod is installed in the rod groove, and a cover plate installed on the side of the base is provided with a notch connected to the rod groove, and a first fixing plate and a second fixing plate are detachably fixedly installed in the notch, the first fixing plate is arranged horizontally and blocks the rod groove to prevent the touch pressure rod from falling out of the rod groove, and the second fixing plate is arranged vertically and blocks the outside of the first fixing plate to prevent the first fixing plate from falling out of the notch. The beneficial effect of the present invention is that when the touch pressure rod of the micro switch is deformed and damaged due to multiple pressing, the touch pressure rod can be replaced separately after the first fixing plate and the second fixing plate are removed, without replacing the entire micro switch, which is more convenient and saves the cost of using the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the partial split structure of the present invention;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the first fixing plate in the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the trigger rod of the present invention after the rod groove is replaced;

[0022] Figure 6 It is a schematic diagram of the split structure of the button in the present invention;

[0023] Figure 7 It is a schematic diagram of a three-dimensional structure in which the end of the trigger rod of the present invention is a roller;

[0024] Figure 8 It is a schematic diagram of a three-dimensional structure in which the end of the trigger rod of the present invention is an arc-shaped head;

[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure in which the end of the trigger rod of the present invention is an extended head.

[0026] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0027] 1. Base; 2. Moving contact piece; 3. Rod slot; 4. Trigger rod; 5. First fixing plate; 6. Second fixing plate; 7. Button; 11. Cover plate; 12. Mounting slot; 13. Fixing hole; 14. Fixing piece; 21. Normally closed static contact piece; 22. Normally open static contact piece; 23. Lever piece; 24. Hook spring; 31. Positioning slot; 32. Protruding head; 41. Rod handle; 42. Rod plug plate; 43. Roller; 44. Arc head; 45. Extension head; 46. Positioning plug plate; 51. First pull plate; 52. Socket; 53. Plug column; 61. Second pull plate; 62. Vertical slot; 63. Vertical plug plate; 71. Button head; 72. Button seat; 73. Connecting column; 74. Connecting slot. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0029] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition to being used to indicate a position or location relationship, some of the above terms may also be used to indicate other meanings. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1-Figure 2 As shown, it is a preferred embodiment of the present invention, a micro switch with a replaceable trigger rod, comprising a base 1 and a cover plate 11, wherein the base 1 is provided with a mounting groove 12 and a fixing hole 13, the cover plate 11 is provided with a fixing member 14, the end of the fixing member 14 is threaded in the fixing hole 13 to fix the cover plate 11 and the base 1, the mounting groove 12 is provided with a button 7, a lever piece 23, a hook spring 24, a moving contact piece 2, a normally closed static contact piece 21, and a normally open static contact piece 22, the button 7 is arranged above the lever piece 23, one end of the hook spring 24 is connected to the lever piece 23, and the other end is connected to the moving contact piece 2 A normally closed static contact piece 21 is provided above the end of the moving contact piece 2, and a normally open static contact piece 22 is provided below the end of the moving contact piece 2. The moving contact piece 2, the normally closed static contact piece 21, and the normally open static contact piece 22 are all connected with a pin extending from the base 1. In the initial state, the moving contact piece 2 is in contact with the normally closed static contact piece 21. After pressing the button 7 downward, the button 7 drives one end of the lever piece 23 to move downward. During the movement of the lever piece 23, the moving contact piece 2 is driven downward by the hook spring 24, so that the moving contact piece 2 moves from contacting with the normally closed static contact piece 21 to contacting with the normally open static contact piece 22.

[0034] like Figure 3 As shown, in this embodiment, the base 1 is further provided with a rod groove 3 located above the mounting groove 12, the cover plate 11 is provided with a slot penetrating the cover plate 11 and communicating with the rod groove 3, a trigger rod 4 is installed in the rod groove 3, the button 7 is located below a section of the trigger rod 4, a first fixing plate 5 and a second fixing plate 6 are provided in the slot, the first fixing plate 5 is blocked at the side opening of the rod groove 3 to prevent the trigger rod 4 from escaping from the rod groove 3, the second fixing plate 6 is fitted and blocked at the outer side of the first fixing plate 5 to prevent the first fixing plate 5 from escaping from the slot, the first fixing plate 5 is detachably mounted on the base 1 in a transverse direction, and the second fixing plate 6 is detachably mounted on the cover plate 11 in a vertical direction.

[0035] Press the trigger rod 4 downward, and the button 7 is pressed down by the end of the trigger rod 4, switching the moving contact piece 2 from contacting the normally closed static contact piece 21 to contacting the normally open static contact piece 22. After multiple uses, the trigger rod 4 will undergo irreversible deformation due to the pressure and the resistance of the button 7. At this time, the trigger rod 4 can be replaced for normal use of the micro switch; when replacing, the second fixing plate 6 is pulled vertically upward, and the first fixing plate 5 is pulled horizontally outward. After the first fixing plate 5 and the second fixing plate 6 are separated from the cover plate 11, the rod groove 3 is directly in contact with the outside. At this time, the trigger rod 4 can be removed. After the trigger rod 4 is replaced, the first fixing plate 5 and the second fixing plate 6 are reset in the notch to complete the fixation of the trigger rod 4.

[0036] Furthermore, a plurality of transverse insertion holes 52 are provided on the base 1, such as Figure 4 As shown, a plurality of transverse plugs 53 are provided on the first fixing plate 5, and the plugs 53 are inserted into the plug holes 52 to transversely fix the first fixing plate 5 and the base 1; a vertical slot 62 is provided in the slot and is located outside the first fixing plate 5, and a vertical plug 63 matching the vertical slot 62 is provided outside the second fixing plate 6 to vertically fix the second fixing plate 6 on the outer side of the first fixing plate 5; a first pull plate 51 protruding toward the top of the first fixing plate 5 is provided, and a second pull plate 61 protruding toward the outside is provided on the side of the second fixing plate 6. After buckling the second pull plate 61 upward, the second fixing plate 6 can be pulled vertically out of the slot, and after buckling the first pull plate 51 outward, the first fixing plate 5 can be pulled horizontally out of the slot, and then the trigger rod 4 can be taken out of the rod slot 3.

[0037] Furthermore, the trigger rod 4 includes a rod handle 41 and a rod plug plate 42, the rod handle 41 is located outside the rod groove 3, the rod handle 41 extends obliquely upward toward the button 7, and the button 7 is arranged below the rod handle 41. Horizontally extending positioning plug plates 46 are provided on both sides of the rod plug plate 42, and the rod groove 3 and the first fixed plate 5 are provided with positioning slots 31 for inserting the positioning plug plates 46. According to actual needs, it can be selected whether the positioning slots 31 and the positioning plug plates 46 are movably matched. When the positioning plug plates 46 and the positioning slots 31 are fixedly matched, the rod handle 41 can only rely on bending deformation to press the button 7. When the positioning plug plates 46 and the positioning slots 31 are movably matched, the rod plug plates 42 can rotate as the rod handle 41 bends.

[0038] In actual use, according to the different internal structures of the electronic equipment where the micro switch is installed, it is necessary to provide a corresponding structure at the end of the handle 41, specifically, Figure 7-Figure 9As shown, in this embodiment, the end of the rod handle 41 is provided with one of a roller 43, an arc head 44, or an extended head 45. Further, the rod groove 3 is provided with a plurality of rod grooves, and a horizontally extending protruding head 32 is provided in each of the rod grooves 3. When the trigger rod 4 is not pressed, the protruding head 32 abuts against the rod plug plate 42 of the trigger rod 4 to prevent the trigger rod 4 from excessively bending in the reverse direction.

[0039] When the same trigger rod 4 is installed in the rod groove 3 at different positions, the initial positions of the rod handle 41 and the button 7 will also change. If the same button 7 is used, the button 7 may always be in a pressed state, affecting the normal use of the micro switch. To solve this problem, Figure 6 As shown, in this embodiment, the button 7 includes a button head 71 and a button seat 72. The button head 71 is provided with a connecting column 73, and the button seat 72 is provided with a connecting groove 74. The connecting groove 74 matches the connecting column 73 to detachably fix the button head 71 and the button seat 72. There are protrusions on both sides of the button head 71 to facilitate the operator to disassemble it. Figure 5 As shown, after the trigger rod 4 is moved into the rod groove 3 close to the button 7, by replacing the smaller button head 71, the button 7 can be prevented from being in a pressed state at the beginning, making the micro switch as a whole more convenient to adapt to electronic devices with different structures.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A micro switch with a replaceable trigger rod, comprising a base (1) and a cover plate (11) fixedly connected to each other, a mounting groove (12) being provided on the base (1), a button (7) being provided in the mounting groove (12), a moving contact piece (2) being elastically connected to the mounting groove (12) being provided below the button (7), a normally closed static contact piece (21) and a normally open static contact piece (22) being provided above and below the end of the moving contact piece (2), respectively, the button (7) being pressed to drive the moving contact piece (2) to move from contact with the normally closed static contact piece (21) to contact with the normally open static contact piece (22), characterized in that: A rod groove (3) is also provided on the base (1), and a notch connected to the rod groove (3) is provided on the cover plate (11). A trigger rod (4) is installed in the rod groove (3), and the button (7) is located below the trigger rod (4). When the trigger rod (4) is pressed downward, the button (7) is driven to move downward. A first fixing plate (5) located inside and a second fixing plate (6) located outside are provided in the notch. The first fixing plate (5) is detachably fixedly installed on and blocks the outside of the rod groove (3) in a transverse direction to prevent the trigger rod (4) from escaping from the rod groove (3), and the second fixing plate (6) is detachably fixedly installed in the notch in a vertical direction to prevent the first fixing plate (5) from escaping from the notch. The base (1) is provided with a plurality of transverse insertion holes (52), and the first fixing plate (5) is provided with insertion posts (53) that are inserted into the insertion holes (52); the notch is provided with a vertical insertion slot (62) located outside the first fixing plate (5), and the second fixing plate (6) is provided with a vertical insertion plate (63) that matches the vertical insertion slot (62) outside, so that the second fixing plate (6) can be detachably mounted on the outer side of the first fixing plate (5).

2. The micro switch according to claim 1, characterized in that: A protruding first pull plate (51) is provided on the top of the first fixing plate (5), and a protruding second pull plate (61) is provided on the outer side of the second fixing plate (6).

3. The micro switch according to claim 1, characterized in that: The trigger rod (4) comprises a rod handle (41) located outside the rod groove (3) and a rod plug plate (42) located inside the rod groove (3); the button (7) is arranged below the rod handle (41); horizontally extending positioning plug plates (46) are arranged on both sides of the rod plug plate (42); and positioning slots (31) for inserting the positioning plug plates (46) are arranged on the rod groove (3) and the first fixing plate (5).

4. The micro switch according to claim 3, characterized in that: The end of the rod handle (41) is provided with a roller (43) or an arc-shaped head (44) or an extended head (45).

5. The micro switch according to claim 1, characterized in that: A plurality of rod grooves (3) are provided, and a protruding head (32) is provided in each of the rod grooves (3). When the trigger rod (4) is not pressed, the protruding head (32) abuts against the trigger rod (4).

6. The micro switch according to claim 1, characterized in that: The button (7) comprises a button head (71) and a button seat (72); the button head (71) is provided with a connecting column (73); the button seat (72) is provided with a connecting groove (74); the connecting groove (74) matches the connecting column (73) to detachably and fixedly connect the button head (71) and the button seat (72).

7. The micro switch according to claim 4, characterized in that: The base (1) is also provided with a fixing hole (13), the cover plate (11) is provided with a fixing piece (14), and the end of the fixing piece (14) is threadedly connected in the fixing hole (13) to fix the cover plate (11) and the base (1).

Images