CN113241279B

CN113241279B - Combined micro-button switch and assembling and disassembling method thereof

Info

Publication number: CN113241279B
Application number: CN202110436149.4A
Authority: CN
Inventors: 杨代发; 蒋天诗; 李泓东; 杨镒; 龙元玉; 杨波; 杨再恒; 胡云亮
Original assignee: Guizhou Zhenhua Hualian Electronics Co ltd
Current assignee: Guizhou Zhenhua Hualian Electronics Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2023-01-20
Anticipated expiration: 2041-04-22
Also published as: CN113241279A

Abstract

The invention discloses a combined micro-button switch and an assembling and disassembling method thereof, belonging to the technical field of button switches. The switch comprises a shell assembly, a toggle mechanism and a power mechanism, wherein the toggle mechanism is located in the inner side of the shell assembly and is movably connected with the shell assembly through a shaft pin A, the power mechanism partially extends into the shell assembly and is connected with the shell assembly in a sliding mode, the power mechanism is located on the lower side of the toggle mechanism, the power mechanism is detachably connected with the shell assembly through a plurality of fixing pieces, the toggle mechanism can toggle the power mechanism to perform circuit switching, a rubber outer cover is sleeved on the shell assembly, and the power mechanism is located in a space surrounded by the shell assembly and the rubber outer cover. After the rubber outer cover and the fixing piece are sequentially detached, the relative shell component is pulled downwards to take out the two micro-motion units, the two micro-motion units are separated from the cover plate, elements in the base can be maintained or replaced, the non-damage detachment is achieved, the detachment efficiency is high, and the switch maintenance cost is low.

Description

Combined micro-button switch and assembling and disassembling method thereof

Technical Field

The invention relates to a combined micro-button switch and an assembling and disassembling method thereof, belonging to the technical field of button switches.

Background

The toggle switch is a manual control switch, realizes circuit conversion of the switch by manually pulling the toggle handle, has the characteristics of small volume, simple and convenient operation, high reliability, good hand feeling and the like, is widely applied to the fields of aviation, aerospace, ships, weapons, electronics and the like, and plays a role in switching on and off circuits in electronic equipment, instruments and meters. The traditional button switch is designed by riveting a conductive piece inside a plastic base and promoting a movable contact piece to contact with the conductive piece through a lever principle to realize circuit connection. In order to ensure the electrical performance indexes of the toggle switch, such as insulation resistance, dielectric withstand voltage and the like, the toggle switch is generally assembled by adopting a riveting process. However, the toggle switch is assembled by adopting a riveting process, and although the performance index reaches the requirement of a user, the assembly of the toggle switch is also irreversible. When the toggle switch has a fault, the toggle switch needs to be disassembled, and due to the riveting process adopted in the assembly process, the plastic part of the switch can deform and the plating layer of the metal part falls off in the disassembly process, so that the parts can not be used for the second time.

Chinese patent publication No. CN203277187U discloses a split type toggle switch, which adopts a split type structure, wherein a housing of the toggle switch is divided into an upper cover and a base, the upper cover is further provided with a convex angle extending to the upper end of the base, the upper cover and the convex angle are integrally formed, and the upper cover and the base are in clearance fit, so that a maintenance worker can conveniently open a housing of the toggle switch through a clearance between the upper cover and the base when maintaining.

However, the split type toggle switch has the following disadvantages: firstly, the upper cover is in clearance fit with the base, the switch is poor in overall stability, and the base is easy to fall off from the upper cover, so that the electrical performance index of the toggle switch is reduced; secondly, the button switch is opened by utilizing the gap between the upper cover and the base during maintenance, and the upper cover or the base is easy to be damaged by tools such as a blade or a screwdriver and the like due to the small gap; finally, after the shell is disassembled, the body is further disassembled, and the parts in the body can be maintained or replaced, so that the disassembly is long in time consumption, and the maintenance efficiency is still low.

Disclosure of Invention

In order to solve the technical problems, the invention provides a combined micro-button sub-switch and an assembling and disassembling method thereof.

The invention is realized by the following technical scheme:

the invention provides a combined micro-button switch which comprises a shell assembly, a toggle mechanism and a power mechanism, wherein the toggle mechanism is positioned on the inner side of the shell assembly and is movably connected with the shell assembly through a shaft pin A, the power mechanism partially extends into the shell assembly and is in sliding connection with the shell assembly, the power mechanism is positioned on the lower side of the toggle mechanism and is detachably connected with the shell assembly through a plurality of fixing pieces, the toggle mechanism can toggle the power mechanism to switch circuits, a rubber outer cover is sleeved on the shell assembly, and the power mechanism is positioned in a space surrounded by the shell assembly and the rubber outer cover.

The shell assembly comprises a shaft sleeve and a metal shell, wherein a mounting hole is formed in the position, corresponding to the shaft pin A, of the shaft sleeve, the metal shell is connected with the shaft sleeve in a welded mode, the metal shell is cuboid-shaped, an opening is formed in one side, far away from the shaft sleeve, of the metal shell, a clamping hole is formed in the position, corresponding to the fixing piece, of the metal shell, and the fixing piece is an L-shaped reed.

Toggle mechanism includes handle and spacer, the middle part of handle is passed through pivot A and is connected with shell subassembly rotation, the one end threaded connection of handle has the handle cap, the other end is equipped with the gyro wheel axle, and the coaxial blind hole A that is equipped with, be equipped with notch A in the position corresponding with blind hole A on the handle, notch A's width is less than blind hole A's diameter, the spacer is located notch A's inboard, and with notch A clearance fit, one side of spacer is connected with blind hole A's bottom through sliding head and pressure spring A, the opposite side supports and leans on the gyro wheel axle.

A notch B is formed in one side, in contact with the sliding head, of the positioning sheet, one, two or three positioning grooves are formed in the notch B, the surface, in contact with the roller shaft, of the positioning sheet is an arc-shaped surface, and L-shaped limiting feet are arranged at two ends of the arc-shaped surface in a downward extending mode.

The power mechanism comprises two micro-motion units, and the two micro-motion units are connected and sealed through a cover plate.

The two sides of the cover plate are symmetrically provided with clamping strips, clamping grooves A are formed in the positions, corresponding to the clamping strips, of the micro-motion units, and the clamping strips are in clearance fit with the clamping grooves A.

The micro-motion unit comprises a base and a movable contact piece assembly, one side of the base is provided with an opening, a plurality of part limiting grooves are formed in the base, a middle conductive piece, a conductive piece A and a conductive piece B are arranged in the base, a key assembly is movably arranged in the base, the key assembly partially extends out of the base, the movable contact piece assembly is movably connected with the middle conductive piece, the movable contact piece assembly is located above the conductive piece B and is in contact with the conductive piece A, the movable contact piece assembly is connected with the key assembly through a tension spring, a circuit switching assembly is movably arranged at the top of the base, and the circuit switching assembly is abutted against the key assembly downwards.

The circuit switching assembly comprises a pressing piece, the pressing piece is rotatably connected with the base through a shaft pin B, the shaft pin B is sleeved with a torsional spring, a conductive piece A, a conductive piece B and a middle conductive piece C are connected with the conductive piece A, the conductive piece B and the middle conductive piece respectively, and a conductive ring C is arranged on the conductive piece C.

The assembling method of the combined micro-button sub-switch comprises the following main steps:

A. assembling a housing assembly: the shaft sleeve is welded on the metal shell,

B. assembling a toggle mechanism: sequentially placing the pressure spring A and the sliding head into the blind hole A on the handle, placing the positioning sheet into the inner side of the notch A, then installing the roller shaft on the handle, limiting the roller shaft,

C. assembling a micro-motion unit: respectively riveting conductive pieces C on the conductive piece A, the conductive piece B and the middle conductive piece, installing a conductive ring on each conductive piece C, then respectively placing the conductive piece A, the conductive piece B and the middle conductive piece into corresponding part limiting grooves in the base, installing a pressure spring B and a key into the base, riveting a movable contact on the movable contact piece, installing a support piece on the movable contact piece, installing a pull spring piece on the support piece, movably connecting the movable contact piece with the middle conductive piece, then connecting the pull spring piece and the key through the pull spring, finishing the fixing work of the movable contact piece, installing the torsion spring and the press piece on the top of the base through a shaft pin B,

D. and (3) integral assembly: putting the toggle mechanism obtained by assembling in the step B into the inner side of the shell component, connecting the handle and the shaft sleeve by using a shaft pin A, then installing a handle cap on the handle, and then enabling the toggle mechanism to be assembled and fixed, placing the cover plate between the two micro-motion units, aligning the clamping groove A on the base in the micro-motion unit with the clamping strip on the cover plate, inwards closing the two micro-motion units and the cover plate, then integrally inserting the upper parts of the two micro-motion units and the cover plate into the metal shell, respectively inserting the two fixing pieces into the clamping holes on the metal shell and the clamping groove B on the base in the two micro-motion units, namely enabling the power mechanism to be assembled and fixed, then sleeving the rubber outer cover on the metal shell, and obtaining the combined micro-button sub-switch.

A method for disassembling a combined micro-button switch comprises the following main steps:

a. when the combined microswitch has a fault, the rubber outer cover is taken down from the shell component, then the fixing piece is pulled outwards by hands, the fixing piece can be detached from the shell component, the two inching units can be taken out by pulling downwards relative to the shell component, the two inching units are separated from the cover plate, and elements in the base in the inching units can be maintained or replaced,

b. the handle cap is unscrewed from the handle, then the shaft pin A is taken out, the toggle mechanism is taken out from the inner side of the shell component, and then elements in the toggle mechanism can be repaired or replaced.

The invention has the beneficial effects that:

1. the toggle mechanism is connected with the shell assembly through the shaft pin A, the power mechanism is connected with the shell assembly through the fixing piece when being in sliding connection with the shell assembly, the rubber outer cover is sleeved on the shell assembly through self elasticity, all parts are reliably connected, the overall stability of the switch is good, and the combined micro-toggle switch can meet relevant electrical performance indexes.

2. After demolising rubber dustcoat and stationary blade in proper order with the hand, relative shell subassembly is drawn downwards and can be taken out two fine motion units, makes two fine motion units separate with the apron, can maintain or change the component in the base, realizes the not damaged dismantlement, dismantles efficiently, and switch cost of maintenance is low.

3. After the handle cap and the shaft pin A are detached, the toggle mechanism is taken out from the inner side of the shell component, elements in the toggle mechanism can be maintained or replaced, the detaching efficiency is high, and the switch repairing cost is low.

4. The positioning pieces with different structures are replaced, and the function of double-pole three-stop, double-pole double-stop or double-pole single-stop can be realized by combining the micro-button switches, so that the micro-switch has good practicability and interchangeability.

5. The toggle switch has the advantages of convenient operation and rapid on-off of the microswitch.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a left side view of the structure of FIG. 1;

FIG. 3 is an exploded view of the housing assembly and the toggle mechanism according to the first embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a micro-motion unit according to a first embodiment of the present invention;

fig. 5 is an exploded view of the power mechanism according to the first embodiment of the present invention;

FIG. 6 is a schematic view of a base assembly of a conventional toggle switch;

FIG. 7 is a schematic structural diagram of a positioning plate according to a second embodiment of the present invention;

FIG. 8 is a schematic view of another embodiment of the actuator plate of the present invention;

fig. 9 is a schematic structural view of a positioning plate according to a third embodiment of the present invention.

In the figure: 1-housing component, 101-handle cap, 102-shaft pin A, 103-shaft sleeve, 104-handle, 105-pressure spring A, 106-sliding head, 107-roller shaft, 108-positioning piece, 109-metal housing, 2-power mechanism, 201-cover plate, 202-pressing piece, 203-pulling piece, 204-moving contact, 205-moving contact, 206-supporting piece, 207-torsion spring, 208-pulling spring, 209-shaft pin B, 210-base, 211-key, 212-pressure spring B, 213-conducting piece A, 214-conducting piece B, 215-middle conducting piece, 216-conducting piece C, 217-conducting ring, 3-rubber housing, 4-hexagon nut, 5-elastic gasket, 6-positioning gasket, and 7-fixing piece.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

The first embodiment is as follows:

as shown in fig. 1 to 5, the combined micro-button sub-switch of the present invention comprises a housing assembly 1, a toggle mechanism and a power mechanism 2, wherein the toggle mechanism is located inside the housing assembly 1 and is movably connected with the housing assembly 1 through a shaft pin a102, a part of the power mechanism 2 extends into the housing assembly 1 and is slidably connected with the housing assembly 1, the power mechanism 2 is located at a lower side of the toggle mechanism, the power mechanism 2 is detachably connected with the housing assembly 1 through a plurality of fixing pieces 7, the toggle mechanism can toggle the power mechanism 2 to perform circuit switching, a rubber housing 3 is sleeved on the housing assembly 1, and the power mechanism 2 is located in a space surrounded by the housing assembly 1 and the rubber housing 3. When in use, the rubber housing 3 is sleeved on the shell component 1 by the elasticity of the rubber housing. The toggle mechanism is connected with the shell assembly 1 through a shaft pin A102, the power mechanism 2 is connected with the shell assembly 1 through the fixing sheet 7 while being in sliding connection with the shell assembly 1, all the components are reliably connected, the overall stability of the switch is good, and the combined micro-button sub-switch is guaranteed to meet relevant electrical performance indexes; demolish rubber dustcoat 3, stationary blade 7 in proper order not damaged, can take out power unit 2 and maintain or change its internal component, demolish pivot A102 back, can follow shell subassembly 1 inboard and take out toggle mechanism, maintain or change its internal component, dismantle weak point consuming time, help improving the maintenance efficiency of switch. Except for the failed element, other parts can be assembled for use for the second time, and the maintenance cost of the switch is reduced.

The shell assembly 1 comprises a shaft sleeve 103 and a metal shell 109, wherein a mounting hole is formed in the position, corresponding to the shaft pin A102, of the shaft sleeve 103, the metal shell 109 is connected with the shaft sleeve 103 in a welding mode, the metal shell 109 is in a cuboid shape, one side, far away from the shaft sleeve 103, of the metal shell 109 is provided with an opening, a clamping hole is formed in the position, corresponding to the fixing piece 7, of the metal shell 109, and the fixing piece 7 is an L-shaped reed. When the positioning device is used, external threads are processed on the shaft sleeve 103, and the hexagonal nut 4, the elastic washer 5 and the positioning washer 6 are sleeved on the shaft sleeve 103.

The toggle mechanism comprises a handle 104 and a positioning sheet 108, the middle part of the handle 104 is rotationally connected with the shell assembly 1 through a shaft pin A102, one end of the handle 104 is in threaded connection with a handle cap 101, the other end of the handle is provided with a roller shaft 107, a blind hole A is coaxially processed, a notch A is processed on the handle 104 at a position corresponding to the blind hole A, the width of the notch A is smaller than the diameter of the blind hole A, the positioning sheet 108 is located on the inner side of the notch A and is in clearance fit with the notch A, one side of the positioning sheet 108 is connected with the bottom of the blind hole A through a sliding head 106 and a pressure spring A105, and the other side of the positioning sheet abuts against the roller shaft 107. When the sliding head is used, the width of the notch A is smaller than the diameter of the blind hole A, and the sliding head 106 and the pressure spring A105 are prevented from falling out of the blind hole A in the radial direction.

A notch B is formed in one side of the positioning sheet 108, which is in contact with the sliding head 106, one, two or three positioning grooves are formed in the notch B, the surface of the positioning sheet 108, which is in contact with the roller shaft 107, is an arc-shaped surface, and two ends of the arc-shaped surface extend downwards to form L-shaped limiting feet. When three positioning grooves are formed in the notch B, the positioning piece 108 is structured as shown in fig. 3, and the rotation angle of the roller shaft 107 is limited by the L-shaped limiting leg.

The power mechanism 2 comprises two micro-motion units, and the two micro-motion units are connected and sealed through a cover plate 201.

Clamping strips are symmetrically arranged on two sides of the cover plate 201, clamping grooves A are machined in positions, corresponding to the clamping strips, on the micro-motion unit, and the clamping strips are in clearance fit with the clamping grooves A.

The micro-motion unit comprises a base 210 and a movable contact piece assembly, one side of the base 210 is provided with an opening, a plurality of part limiting grooves are arranged in the base 210, a middle conductive piece 215, a conductive piece A213 and a conductive piece B214 are arranged in the base 210, a key assembly is movably arranged in the base 210, the key assembly partially extends out of the base 210, the movable contact piece assembly is movably connected with the middle conductive piece 215, the movable contact piece assembly is positioned above the conductive piece B214 and is in contact with the conductive piece A213, the movable contact piece assembly is connected with the key assembly through a tension spring 208, a circuit switching assembly is movably arranged at the top of the base 210, and the circuit switching assembly is abutted against the key assembly downwards. In use, the components in the base 210 are limited by the cover plate 201 matching with the part limiting groove.

The opposite side of the opening side of the base 210 is provided with a clamping groove B, the position of the clamping groove B corresponds to that of the fixing piece 7, the key assembly comprises a key 211, the middle part of the key 211 is connected with the base 210 in a sliding manner, one end of the key 211 is connected with the base 210 through a pressure spring B212, the other end of the key 211 extends out of the base 210 under the action of the pressure spring B212, the movable contact spring assembly comprises a movable contact 205, the movable contact 205 is provided with a movable contact 204 and a support piece 206, the support piece 206 is connected with the key 211 through a pull spring 203 and a tension spring 208, the circuit switching assembly comprises a pressing piece 202, the pressing piece 202 is rotatably connected with the base 210 through a shaft pin B209, a torsion spring 207 is sleeved on the shaft pin B209, the pressing piece 202 presses the key 211 under the action of the roller shaft 107, a conductive piece A213, a conductive piece B214 and a conductive piece 215 are respectively connected with a conductive piece C216, and a conductive piece C216 is provided with a conductive ring 216. When the key is used, the key 211 is provided with a blind hole B, and the upper end of the pressure spring B212 extends into the blind hole B. The pressing pieces 202 on the two groups of micro-motion units in the power mechanism 2 have different inclination directions. The end of the conductive element C216 away from the conductive element a213, the conductive element B214, or the conductive element 215 extends to the bottom of the base 210, and the conductive element C216 may be a pin. The movable contact 205 and the support piece 206 are provided with relief notches at positions corresponding to the tension spring 208, so that the tension spring 208 can rotate.

A. assembling a housing assembly: welding the shaft sleeve 103 to the metal shell 109;

B. assembling a toggle mechanism: sequentially placing a pressure spring A105 and a sliding head 106 into a blind hole A on a handle 104, placing a positioning piece 108 into the inner side of a notch A, then installing a roller shaft 107 on the handle 104, and limiting the roller shaft 107;

C. assembling a micro-motion unit: riveting a conductive piece C216 on a conductive piece A213, a conductive piece B214 and a middle conductive piece 215 respectively, installing a conductive ring 217 on each conductive piece C216, then putting the conductive piece A213, the conductive piece B214 and the middle conductive piece 215 into corresponding part limiting grooves in a base 210 respectively, installing a pressure spring B212 and a key 211 into the base 210, riveting a movable contact 204 on the movable contact 205, installing a support piece 206 on the movable contact 205, installing a pull spring piece 203 on the support piece 206, movably connecting the movable contact 205 with the middle conductive piece 215, then connecting the pull spring piece 203 and the key 211 through a tension spring 208, completing the fixing work of the movable contact 205, and installing the torsion spring 207 and the push spring 202 on the top of the base 210 through a shaft pin B209;

D. and (3) integral assembly: putting the toggle mechanism assembled in the step B into the inner side of the shell component 1, connecting the handle 104 and the shaft sleeve 103 by using a shaft pin A102, then installing a handle cap 101 on the handle 104, so that the toggle mechanism can be assembled and fixed, placing a cover plate 201 between the two micromotion units, aligning a clamping groove A on a base 210 in the micromotion unit with a clamping strip on the cover plate 201, inwards closing the two micromotion units and the cover plate 201, then integrally inserting the upper parts of the two micromotion units and the cover plate 201 into the metal shell 109, respectively inserting the two fixing plates 7 into clamping holes on the metal shell 109 and a clamping groove B on the base 210 in the two micromotion units, so that the power mechanism 2 can be assembled and fixed, and then sleeving the rubber housing 3 on the metal shell 109, so that the combined microswitch is obtained.

A method for disassembling a combined micro-button sub-switch comprises the following main steps:

a. when the combined microswitch fails, the rubber housing 3 is taken down from the shell component 1, then the fixing piece 7 is pulled outwards by hands, so that the fixing piece 7 can be detached from the shell component 1, the two micromotion units can be taken out by pulling downwards relative to the shell component 1, the two micromotion units are separated from the cover plate 201, and elements in the base 210 in the micromotion units can be maintained or replaced;

b. the elements of the toggle mechanism can be repaired or replaced by unscrewing the cap 101 from the handle 104, removing the pin a102 and removing the toggle mechanism from the inside of the housing assembly 1.

The working principle of the combined micro-button switch is as follows:

the combined micro-button sub-switch is tightly installed on the panel through a hexagon nut 4, an elastic washer 5 and a positioning washer 6. In the initial state, handle 104 is in the middle vertical position, and the circuits of conductor a213 and middle conductor 215 in the two inching units are normally on. When the handle 104 is pulled by an external force, the handle 104 drives the roller shaft 107 to rotate around the shaft pin a102, the roller shaft 107 presses the pressing piece 202 on one of the inching units downwards, the pressing piece 202 presses the key 211 downwards, the key 211 moves downwards, the pressure spring B212 is compressed, the tension spring 208 is stretched to store elastic potential energy, after the key 211 moves downwards continuously to exceed a critical position, the tension spring 208 releases the elastic potential energy to shorten, and pulls one end of the movable contact 204 mounted on the movable contact 205 to swing downwards around the middle conductive piece 215, the movable contact 204 is contacted with the conductive piece B214, so that the conductive piece B214 is conducted with the middle conductive piece 215, and circuit switching is realized. Similarly, after the handle 104 is pulled to the opposite direction from the middle vertical position, the other inching unit realizes circuit switching.

When the handle 104 is pulled to reset from the inclined position to the middle position, the downward pressing force of the roller shaft 107 on the pressing piece 202 is gradually reduced until the downward pressing force disappears, the pressing piece 202 gradually rotates to reset under the action of the torsion spring 207, the key 211 gradually moves upwards to reset under the action of the compression spring B202, meanwhile, the key 211 drives the tension spring 208 and the movable contact 205 to gradually reset, the movable contact 204 is restored to contact with the conductive piece A213, and one-time circuit switching is realized.

After the slider 106 slides from one positioning groove to another positioning groove on the surface of the notch B, the slider 106 abuts against the corresponding positioning groove under the action of the pressure spring a105, and the stopping function of the handle 104 is realized. Thus, when the positioning piece 108 having the structure shown in fig. 3 is used, the combination micro-button switch has a double-pole three-position function.

The shell subassembly and the base subassembly of traditional button switch adopt to detain usually and rivet the mode assembly, lead to when button switch breaks down, split shell subassembly and base subassembly's the degree of difficulty is great, and shell subassembly and base subassembly after the split can damage, are difficult to assemble once more and use, and the switch is dismantled for a long time, and cost of maintenance is high.

In addition, as shown in fig. 6, in the conventional assembly process of the toggle switch, after the middle conductive piece and the conductive piece are installed in the base, the middle conductive piece and the conductive piece are fixed in the base in a riveting mode, and then the glue is dispensed and sealed.

The combined micro-toggle switch provided by the invention has the following beneficial effects:

1. toggle mechanism passes through pivot A102 and is connected with shell subassembly 1, and power unit 2 is connected with shell subassembly 1 through stationary blade 7 when shell subassembly 1 sliding connection, and rubber housing 3 relies on self elasticity suit on shell subassembly 1, and each part is connected reliably, and switch overall stability is good, and the guarantee combination micro-gap button sub-switch satisfies relevant electrical property index.

2. After dismantling rubber dustcoat 3 and stationary blade 7 in proper order with the hand, relative shell subassembly 1 draws downwards and can take out two fine motion units, makes two fine motion units separate with apron 201, can maintain or change the component in base 210, realizes the not damaged dismantlement, dismantles efficiently, and switch cost of maintenance is low.

3. After the handle cap 101 and the shaft pin a102 are removed, the toggle mechanism is taken out from the inner side of the shell component 1, so that elements in the toggle mechanism can be maintained or replaced, the disassembly efficiency is high, and the maintenance cost of the switch is low.

4. By replacing the positioning pieces 108 with different structures, the function of double-pole three-stop, double-pole double-stop or double-pole single-stop can be realized by combining the micro-button switches, and the micro-button switch has good practicability and interchangeability.

5. The switch has the advantages of convenient operation of the toggle switch and rapid on-off of the microswitch.

The second embodiment:

compared with the first embodiment, the structure of the combined micro-button sub-switch in the second embodiment is different in that: the structure of the positioning plate 108 shown in fig. 7 is adopted, and one of the micro-motion units adopts the structure of the pressing plate 202 shown in fig. 8. In a natural state, the handle 104 in the combined micro-toggle switch can be stopped at two positioning slots, when the lower end of the handle 104 swings left or right to a proper position, a certain micro-unit realizes circuit switching, and when the hand is loosened, the handle 104 automatically resets to the corresponding positioning slot, so that the switch is single-side reset. In addition, the handle 104 may be pulled to slide the slider 106 from one detent to another detent.

Example three:

compared with the first embodiment, the structure of the combined micro-button sub-switch in the third embodiment is different in that: the positioning plate 108 structure shown in fig. 9 is adopted, and the two micro-motion units adopt the pressing plate 202 structure shown in fig. 8. In a natural state, the handle 104 in the combined micro-button switch can only stop at the middle positioning groove, when the lower end of the handle 104 swings left or right to the right, a certain micro-motion unit realizes circuit switching, and after hands are loosened, the handle 104 automatically resets to the middle positioning groove, so that the switch is reset at two sides.

Claims

1. A combined micro-button switch is characterized in that: the power mechanism comprises a shell assembly (1), a toggle mechanism and a power mechanism (2), wherein the toggle mechanism is located on the inner side of the shell assembly (1) and is movably connected with the shell assembly (1) through a shaft pin A (102), part of the power mechanism (2) extends into the shell assembly (1) and is in sliding connection with the shell assembly (1), the power mechanism (2) is located on the lower side of the toggle mechanism, the power mechanism (2) is detachably connected with the shell assembly (1) through a plurality of fixing pieces (7), the toggle mechanism can toggle the power mechanism (2) to perform circuit switching, a rubber outer cover (3) is sleeved on the shell assembly (1), and the power mechanism (2) is located in a space surrounded by the shell assembly (1) and the rubber outer cover (3);

the toggle mechanism comprises a handle (104) and a positioning sheet (108), the middle part of the handle (104) is rotatably connected with the shell assembly (1) through a shaft pin A (102), one end of the handle (104) is in threaded connection with a handle cap (101), the other end of the handle (104) is provided with a roller shaft (107) and is coaxially provided with a blind hole A, a notch A is arranged on the handle (104) at a position corresponding to the blind hole A, the width of the notch A is smaller than the diameter of the blind hole A, the positioning sheet (108) is positioned on the inner side of the notch A and is in clearance fit with the notch A, one side of the positioning sheet (108) is connected with the bottom of the blind hole A through a sliding head (106) and a pressure spring A (105), and the other side of the positioning sheet abuts against the roller shaft (107);

the power mechanism (2) comprises two micro-motion units, and the two micro-motion units are connected and sealed through a cover plate (201);

the micro-motion unit comprises a base (210) and a movable contact piece assembly, one side of the base (210) is provided with an opening, a plurality of part limiting grooves are formed in the base (210), a middle conductive piece (215), a conductive piece A (213) and a conductive piece B (214) are arranged in the base (210), a key assembly is movably arranged in the base (210), the key assembly partially extends out of the base (210), the movable contact piece assembly is movably connected with the middle conductive piece (215), the movable contact piece assembly is located above the conductive piece B (214) and is in contact with the conductive piece A (213), the movable contact piece assembly is connected with the key assembly through a tension spring (208), a circuit switching assembly is movably arranged at the top of the base (210), and the circuit switching assembly is abutted against the key assembly downwards.

2. The combination micro-button switch of claim 1 wherein: the shell assembly (1) comprises a shaft sleeve (103) and a metal shell (109), a mounting hole is formed in the position, corresponding to the shaft pin A (102), of the shaft sleeve (103), the metal shell (109) is connected with the shaft sleeve (103) in a welding mode, the metal shell (109) is cuboid, an opening is formed in one side, far away from the shaft sleeve (103), of the metal shell (109), and a clamping hole is formed in the position, corresponding to the fixing piece (7), of the metal shell (109); the fixing piece (7) is an L-shaped reed.

3. The combination micro-button switch of claim 1 wherein: one side of the positioning plate (108) contacting with the sliding head (106) is provided with a notch B, one, two or three positioning grooves are arranged in the notch B, the surface of the positioning plate (108) contacting with the roller shaft (107) is an arc-shaped surface, and two ends of the arc-shaped surface extend downwards to form L-shaped limiting feet.

4. The combination micro-button switch of claim 1 wherein: the two sides of the cover plate (201) are symmetrically provided with clamping strips, clamping grooves A are formed in the positions, corresponding to the clamping strips, of the micro-motion units, and the clamping strips are in clearance fit with the clamping grooves A.

5. The combination toggle microswitch of claim 1 wherein: a clamping groove B is formed in the opposite side of the opening side of the base (210), and the position of the clamping groove B corresponds to that of the fixing piece (7); the key assembly comprises a key (211), the middle part of the key (211) is connected with the base (210) in a sliding way, one end of the key (211) is connected with the base (210) through a pressure spring B (212), and the other end of the key (211) extends out of the base (210) under the action of the pressure spring B (212); the movable contact piece assembly comprises a movable contact piece (205), a movable contact (204) and a support piece (206) are arranged on the movable contact piece (205), and the support piece (206) is connected with the key (211) through a pull spring piece (203) and a tension spring (208); the circuit switching component comprises a pressing sheet (202), the pressing sheet (202) is rotatably connected with the base (210) through a shaft pin B (209), and a torsion spring (207) is sleeved on the shaft pin B (209); the conductive element A (213), the conductive element B (214) and the middle conductive element (215) are respectively connected with a conductive element C (216), and the conductive element C (216) is provided with a conductive ring (217).

6. The assembling method of the combined micro-button sub-switch according to any of the claims 1 to 5, wherein: the method comprises the following main steps:

A. assembling a housing assembly: welding the shaft sleeve (103) on the metal shell (109);

B. assembling a toggle mechanism: sequentially placing a pressure spring A (105) and a sliding head (106) into a blind hole A on a handle (104), placing a positioning sheet (108) into the inner side of a notch A, then installing a roller shaft (107) on the handle (104), and limiting the roller shaft (107);

C. assembling a micro-motion unit: respectively riveting a conductive piece C (216) on a conductive piece A (213), a conductive piece B (214) and a middle conductive piece (215), installing a conductive ring (217) on each conductive piece C (216), then respectively putting the conductive piece A (213), the conductive piece B (214) and the middle conductive piece (215) into corresponding part limiting grooves in a base (210), installing a pressure spring B (212) and a key (211) into the base (210), riveting a movable contact (204) on the movable contact (205), installing a supporting piece (206) on the movable contact (205), installing a pull spring piece (203) on the supporting piece (206), movably connecting the movable contact (205) with the middle conductive piece (215), then connecting the pull spring piece (203) with the key (211) through a tension spring (208), completing the fixing work of the movable contact (205), and installing a torsion spring (207) and a press spring piece (202) on the top of the base (210) through a shaft pin B (209);

D. and (3) integral assembly: putting the toggle mechanism assembled in the step B into the inner side of a shell component (1), connecting a handle (104) and a shaft sleeve (103) by using a shaft pin A (102), then installing a handle cap (101) on the handle (104) to enable the toggle mechanism to be assembled and fixed, putting a cover plate (201) between two micro-motion units, aligning a clamping groove A on a base (210) in each micro-motion unit with a clamping strip on the cover plate (201), inwards closing the two micro-motion units and the cover plate (201), then integrally inserting the upper parts of the two micro-motion units and the cover plate (201) into a metal shell (109), respectively inserting two fixing pieces (7) into clamping holes in the metal shell (109) and clamping grooves B on the base (210) in the two micro-motion units to enable the power mechanism (2) to be assembled and fixed, and then sleeving a rubber outer cover (3) on the metal shell (109) to obtain the combined micro-motion button switch.

7. The method for disassembling a combination micro-button sub-switch according to any of claims 1 to 5, wherein: the method comprises the following main steps:

a. when the combined micro-button sub-switch fails, the rubber outer cover (3) is taken down from the shell component (1), then the fixing piece (7) is pulled outwards by hands, so that the fixing piece (7) can be detached from the shell component (1), the two micro-motion units can be taken out by pulling downwards relative to the shell component (1), the two micro-motion units are separated from the cover plate (201), and elements in the base (210) in the micro-motion units can be maintained or replaced;

b. the cap (101) is unscrewed from the handle (104), the pin a (102) is then removed and the toggle mechanism is removed from the inside of the housing assembly (1) and the components of the toggle mechanism can be repaired or replaced.