CN114220704B - Pneumatic switch and automatic assembly process method - Google Patents
Pneumatic switch and automatic assembly process method Download PDFInfo
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- CN114220704B CN114220704B CN202111438914.2A CN202111438914A CN114220704B CN 114220704 B CN114220704 B CN 114220704B CN 202111438914 A CN202111438914 A CN 202111438914A CN 114220704 B CN114220704 B CN 114220704B
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- 238000000034 method Methods 0.000 title claims description 34
- 230000008569 process Effects 0.000 title claims description 24
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920006257 Heat-shrinkable film Polymers 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Push-Button Switches (AREA)
- Manufacture Of Switches (AREA)
Abstract
The invention relates to an air pressure switch, which is characterized in that an upper opening of a lower shell is provided with an air inlet at the bottom of the lower shell, the bottom of the upper shell is provided with an opening, the lower shell is clamped with the upper shell, a plurality of positioning devices are arranged on the upper shell and the lower shell, and a rubber pad, a first micro-motion piece, a second micro-motion piece and a third micro-motion piece are sequentially arranged between the lower shell and the upper shell. The upper shell is provided with a guide rail matched with the third micro-motion piece, and the edge of the upper shell presses the edge of the rubber pad, so that a relatively sealed space is formed between the rubber pad and the lower shell. The upper shell is provided with a through hole, two sides of the through hole are fixedly connected with a first side baffle and a second side baffle respectively, a micro switch is arranged between the first side baffle and the second side baffle, a contact part of the micro switch is downwards aligned with a third micro piece, the upper shell is also clamped with a buckling piece, the micro switch is fixed through the buckling piece, the lower end of the buckling piece is opened, the bottom of the lower shell is provided with an air hole, a sintering filter fitting is arranged in the air hole, and the air hole and the air inlet are covered by a rubber pad.
Description
Technical Field
The invention relates to the field of electronic elements, in particular to an air pressure switch and an automatic assembly process method.
Background
The pneumatic control switch is also called a pneumatic switch and a pneumatic valve, and is a switch which controls the opening and closing actions by utilizing the pressure generated by different air pressures at two sides of the switch valve. The housings of prior art air pressure switches are all easy to open and, when they are defective or warranted, it is not possible to determine whether or not they are artificially damaged because they are easy to open, and the prior art air pressure switches cannot be assembled mechanically and fully automatically due to the structural reasons of the components.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, one of the purposes of the invention is as follows: provided is an air pressure switch, wherein the air pressure switch is not easy to open once the air pressure switch is assembled under the condition that the air pressure switch does not damage the air pressure switch, and all parts can be assembled mechanically and fully.
Aiming at the technical problems in the prior art, the second purpose of the invention is as follows: an automatic assembly process method for an air pressure switch is provided, which can realize full-automatic assembly of the air pressure switch, and the assembled air pressure switch shell is not easy to open.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides an air pressure switch, includes casing and last casing down, the upper portion opening of casing down, and the bottom of casing is equipped with the air inlet down, goes up casing bottom opening, and lower casing and last casing joint are equipped with a plurality of positioner with lower casing, are equipped with cushion, first fine motion piece, second fine motion piece and third fine motion piece down between casing and the last casing in proper order. The upper shell is provided with a guide rail matched with the third micro-motion piece, and the edge of the upper shell presses the edge of the rubber pad, so that a relatively sealed space is formed between the rubber pad and the lower shell. The rubber pad is a flexible film. The upper shell is provided with a through hole, two sides of the through hole are fixedly connected with a first side baffle and a second side baffle respectively, a micro switch is arranged between the first side baffle and the second side baffle, a contact part of the micro switch is downwards aligned with a third micro piece, the upper shell is also clamped with a buckling piece, the micro switch is fixed through the buckling piece, the lower end of the buckling piece is opened, the bottom of the lower shell is provided with an air hole, a sintering filter fitting is arranged in the air hole, and the air hole and the air inlet are covered by a rubber pad.
Further, the positioning device comprises a positioning rib which is arranged on the upper shell or the lower shell and has a triangular cross section, the positioning rib is corresponding to the positioning rib, a positioning slot is arranged on the lower shell or the upper shell which is matched with the positioning rib, one edge of the positioning rib is aligned with and inserted into the positioning slot, and the positioning device is used for accurately positioning the upper shell and the lower shell.
Further, the positioning device comprises a positioning concave part arranged on the lower shell or the upper shell, and a positioning protrusion is arranged on the upper shell or the lower shell which is matched with the positioning concave part corresponding to the positioning concave part.
Further, the top of lower casing is equipped with a plurality of positioning concave parts, and the lateral wall of upper casing is equipped with a plurality of positioning protrusion, and positioning protrusion and positioning concave part cooperation confirm the joint position of upper casing and lower casing.
Further, the upper shell or the lower shell is provided with a plurality of clamping protrusions, the lower shell or the upper shell matched with the clamping protrusions is provided with a plurality of clamping holes, and the clamping protrusions and the clamping holes are matched and fixed with the upper shell and the lower shell.
Further, the side wall of the upper shell is provided with a plurality of clamping protrusions at the position close to the bottom, corresponding to the clamping protrusions, and the side wall of the lower shell is provided with a plurality of clamping holes.
Further, the buckling piece comprises an integrally formed top, two side parts and a rear part, the two side parts of the buckling piece are respectively positioned at the two sides of the first side baffle and the two sides of the second side baffle, and the two side parts are respectively clamped with the corresponding side baffles.
Further, the rear portion of buckling piece is located micro-gap switch, the one end of first side baffle and second side baffle, go up the casing and be equipped with buckling piece locating piece and buckling piece locating hole, correspond buckling piece locating piece and buckling piece locating hole, the lower extreme at rear portion is equipped with the concave part, concave part and buckling piece locating piece cooperation, the lower extreme at rear portion is partly inserted in the buckling piece locating hole, the top of first side baffle and second side baffle all is equipped with the location draw-in groove respectively, it is equipped with the location lug to correspond the location draw-in groove buckling piece inboard, the side of first side baffle and second side baffle all is equipped with the location dog respectively, the location dog is used for restricting the position of the both sides portion of buckling piece.
An air pressure switch and an automatic assembly process method, which comprises the following steps,
step one, pressing a sintering filter fitting into an air hole of a prefabricated lower shell by adopting a stamping die;
step two, a rubber cushion is put into the upper opening of the lower shell, and the rubber cushion covers the air hole and the air inlet;
step three, placing a first micro-motion piece from an upper opening of the lower shell;
step four, the prefabricated upper shell is clamped with the lower shell from top to bottom under pressure, and the positions of the upper shell and the lower shell are determined according to a plurality of positioning devices during clamping;
step five, placing a second micro-motion piece and a third micro-motion piece at the through hole of the upper shell;
step six, the contact part of the micro-switch faces downwards and is aligned with a third micro-motion piece, and the micro-switch is arranged between the first side baffle and the second side baffle;
step seven, buckling the buckling piece from top to bottom, wherein the buckling piece is clamped on the upper shell;
and step eight, automatically detecting the function of the air switch by a machine, performing six air pressure circulation pulses, and checking whether the air switch is turned on and off three times.
In general, the invention has the following advantages:
the air pressure switch has several parts connected via clamping, and the assembled air pressure switch has casing not easy to be opened, and this can prevent the user from disassembling and assembling himself and ensure the use safety. The positioning devices are arranged, all the components can be assembled from top to bottom, the assembly action is simple, and the full mechanical operation is convenient.
The automatic assembly process method for the air pressure switch adopts an automatic machine in whole assembly, has simple and practical process, high automatic production efficiency of the machine, low labor intensity of workers and good consistency of product quality, can reduce the product cost, further improves the market competitiveness and improves the economic benefit of enterprises.
Drawings
Fig. 1 is a schematic perspective view of an air pressure switch according to the present invention.
Fig. 2 is a schematic perspective view of another angle of the air pressure switch according to the present invention.
FIG. 3 is a schematic view of another angle of the air pressure switch according to the present invention.
Fig. 4 is a schematic cross-sectional view of the structure at A-A in fig. 3.
Fig. 5 is a schematic cross-sectional structure at B-B in fig. 3.
Fig. 6 is a schematic cross-sectional structure at C-C in fig. 3.
Fig. 7 is a schematic diagram of an assembly process of an automatic assembly process of an air pressure switch according to the present invention.
Fig. 8 is a schematic diagram of an assembly process of a pneumatic switch automation assembly process according to a second embodiment of the present invention.
Fig. 9 is a schematic diagram of an assembling process of the third and fourth steps of the automatic assembling process of the air pressure switch of the present invention.
FIG. 10 is a schematic cross-sectional view of the pneumatic switch assembly process according to the present invention at A-A after step four.
Fig. 11 is a schematic diagram of an assembling process of step five of an automatic assembling process of an air pressure switch according to the present invention.
FIG. 12 is a schematic cross-sectional view of the pneumatic switch assembly process according to the present invention at A-A after step five.
Fig. 13 is a schematic diagram of an assembling process of step six of an automatic assembling process method for an air pressure switch according to the present invention.
FIG. 14 is a schematic cross-sectional view of a portion A-A of an automatic pneumatic switch assembly process according to the present invention.
Fig. 15 is a schematic diagram of an assembling process of step seven of an automatic assembling process method for an air pressure switch according to the present invention.
Wherein fig. 1 to 15 include:
1-lower shell, 1-air inlet, 1-2-positioning concave part, 1-3-clamping hole, 1-4-positioning convex rib and 1-5-air hole;
2-sintering the filter assembly;
3, rubber cushion;
4-micro-motion assembly, 4-1-first micro-motion piece, 4-2-second micro-motion piece and 4-3-third micro-motion piece;
5-upper shell, 5-1-through hole, 5-2-first side baffle, 5-3-second side baffle, 5-4-positioning protrusion, 5-clamping protrusion, 5-6-positioning slot, 5-7-fastener positioning block, 5-8-fastener positioning hole, 5-9-positioning slot, 5-10-positioning block and 5-11-fastener clamping hole;
6-a micro switch and a 6-1-contact part;
7-fastener, 7-1-top, 7-2-side, 7-3-rear, 7-4-recess, 7-5-positioning projection, 7-6-fastener clip projection;
8-stamping die.
Detailed Description
The present invention will be described in further detail below.
Example 1,
As shown in fig. 1 to 15, an air pressure switch comprises a lower shell 1 and an upper shell 5, wherein the upper part of the lower shell 1 is provided with an opening, the bottom of the lower shell 1 is provided with an air inlet 1-1, the bottom of the upper shell 5 is provided with an opening, the lower shell 1 is clamped with the upper shell 5, the upper shell 5 and the lower shell 1 are provided with a plurality of positioning devices, a rubber cushion 3, a first micro-motion piece 4-1, a second micro-motion piece 4-2 and a third micro-motion piece 4-3 are sequentially arranged between the lower shell 1 and the upper shell 5, and the first micro-motion piece 4-1, the second micro-motion piece 4-2 and the third micro-motion piece 4-3 form a micro-motion assembly 4. The upper housing 5 is provided with a guide rail cooperating with the third jog member 4-3. The edge of the upper shell 5 presses the edge of the rubber pad 3, so that a relatively sealed space is formed between the rubber pad 3 and the lower shell 1. The rubber pad 3 is a flexible film. The upper shell 5 is provided with a through hole 5-1, two sides of the through hole 5-1 are fixedly connected with a first side baffle 5-2 and a second side baffle 5-3 respectively, a micro switch 6 is arranged between the first side baffle 5-2 and the second side baffle 5-3, a contact part 6-1 of the micro switch 6 is downwards aligned with a third micro piece 4-3, the upper shell 5 is also clamped with a buckling piece 7, the micro switch 6 is fixed through the buckling piece 7, the lower end of the buckling piece 7 is opened, the bottom of the lower shell 1 is provided with an air hole 1-5, and a sintered filter fitting 2 is arranged in the air hole 1-5. The sintered filter element 2 is a sintered brass element. The air holes 1-5 and the air inlet 1-1 are covered by the rubber cushion 3. The space enclosed by the lower shell 1 and the rubber pad 3 forms a pressure cavity. The sintering filter fitting 2 provides a communication channel between the pressure cavity enclosed by the lower shell 1 and the rubber pad 3 and the outside atmospheric pressure so as to realize the functions of regulating the air pressure and the temperature in the pressure cavity. When gas enters the upper shell 5 through the gas inlet 1-1, the rubber cushion 3 deforms, the first micro-motion part 4-1 is pushed to bulge upwards, the first micro-motion part 4-1 pushes the second micro-motion part 4-2 to move upwards, the third micro-motion part 4-3 is driven to move upwards, the third micro-motion part 4-3 is clamped at the top end of a guide rail of the upper shell 5 and is abutted to the contact part 6-1 of the micro-motion switch 6, at the moment, the micro-motion switch 6 is opened, when gas enters the upper shell 5 through the gas inlet 1-1 again, the rubber cushion 3 deforms, the first micro-motion part 4-1 is pushed to bulge upwards, the first micro-motion part 4-1 pushes the second micro-motion part 4-2 to move upwards, the third micro-motion part 4-3 is driven to move upwards, the third micro-motion part 4-3 is separated from the guide rail of the upper shell 5, at the moment, the micro-motion switch 6 is closed, and the principle is similar to a push-type ball pen.
The positioning device comprises a positioning concave part 1-2 arranged on the lower shell 1 or the upper shell 5, and a positioning protrusion 5-4 is arranged on the upper shell 5 or the lower shell 1 which corresponds to the positioning concave part 1-2 and is matched with the positioning concave part. The top 7-1 of the lower shell 1 is provided with a plurality of positioning concave parts 1-2, the side wall of the upper shell 5 is provided with a plurality of positioning protrusions 5-4, and the positioning protrusions 5-4 are matched with the positioning concave parts 1-2 to determine the clamping positions of the upper shell 5 and the lower shell 1. The upper shell 5 or the lower shell 1 is provided with a plurality of clamping protrusions 5-5, the lower shell 1 or the upper shell 5 matched with the clamping protrusions 5-5 is provided with a plurality of clamping holes 1-3, and the clamping protrusions 5-5 and the clamping holes 1-3 are matched and fixed with the upper shell 5 and the lower shell 1. The side wall of the upper shell 5 is provided with a plurality of clamping protrusions 5-5 near the bottom, and a plurality of clamping holes 1-3 are arranged on the side wall of the lower shell 1 corresponding to the clamping protrusions 5-5.
An air pressure switch and an automatic assembly process method, as shown in fig. 7 to 15, comprises the following steps of firstly, pressing a sintered filter fitting 2 into an air hole of a prefabricated lower shell 1 by adopting a stamping die 8. The use of the stamping die 8 makes it possible to tighten the sintered filter element 2 and avoid leakage around it. By adjusting the compression ratio, the air leakage in the space enclosed by the lower housing 1 and the rubber pad 3 can be adjusted to a desired value by sintering the filter fitting 2, so that the functions of air pressure and temperature adjustment are realized. Step two, a rubber cushion 3 is put into the upper opening of the lower shell 1, and the rubber cushion 3 covers the air hole and the air inlet 1-1; step three, placing a first micro-motion piece 4-1 from the upper opening of the lower shell 1; step four, the prefabricated upper shell 5 is clamped with the lower shell 1 from top to bottom under pressure, and the positions of the upper shell 5 and the lower shell 1 are determined according to a plurality of positioning devices during clamping; and fifthly, placing the second micro-motion piece 4-2 and the third micro-motion piece 4-3 from the through hole 5-1 of the upper shell 5. The fittings are placed in the cavities formed by the upper housing 5 and the lower housing 1 in the order shown in fig. 11, and the fittings cannot be misplaced according to fig. 12. Step six, the contact part 6-1 of the micro switch 6 faces downwards, the third micro piece 4-3 is aligned, and the micro switch 6 is installed between the first side baffle 5-2 and the second side baffle 5-3. The microswitch 6 is assembled as shown in fig. 13 and 14. It is clamped by a plastic boss on the upper housing 5. Note that the positions of the two fittings of the third jogging member 4-3 and the second jogging member 4-2 are affected by the lack of play during assembly. Step seven, buckling the buckling piece 7 from top to bottom, wherein the buckling piece 7 is clamped on the upper shell 5; and step eight, machine automatic detection. The test parameters are pressure 0.020Mpa, cycle time 1 second on, 1 second off. And then laser printing identification characters on the surface of the product. Finally, the machine automatically puts the air pressure switch printed with the mark into the cavity of the heat-shrinkable film for packaging.
EXAMPLE 2,
The main structure of this embodiment is the same as that of embodiment 1, and the details are not repeated here, except that:
as shown in fig. 8 and 9, the positioning device comprises positioning ribs 1-4 with triangular cross sections, which are arranged on an upper shell 5 or a lower shell 1, the corresponding positioning ribs 1-4, the lower shell 1 or the upper shell 5 matched with the positioning ribs are provided with positioning slots 5-6, one side of each positioning rib 1-4 is aligned with and inserted into each positioning slot 5-6, and the positioning ribs 1-4 and the positioning slots 5-6 are assembly positioning points for accurately positioning the upper shell 5 and the lower shell 1.
EXAMPLE 3,
The main structure of this embodiment is the same as that of embodiment 1, and the details are not repeated here, except that:
the buckling piece 7 clamps the micro switch 6 and the upper shell 5 together in the direction shown in fig. 15. The buckling piece 7 comprises a top 7-1, two side parts 7-2 and a rear 7-3 which are integrally formed, the two side parts 7-2 of the buckling piece 7 are respectively positioned at two sides of the first side baffle 5-2 and the second side baffle 5-3, and the two side parts 7-2 are respectively clamped with the corresponding side baffles. The inner sides of the two specific side parts 7-2 are provided with buckling piece clamping protrusions 7-6, and the two side baffles are respectively provided with buckling piece clamping holes 5-11 corresponding to the buckling piece clamping protrusions 7-6. The rear part 7-3 of the buckling piece 7 is positioned at one ends of the micro switch 6, the first side baffle plate 5-2 and the second side baffle plate 5-3, the upper shell 5 is provided with a buckling piece positioning block 5-7 and a buckling piece positioning hole 5-8, the buckling piece positioning block 5-7 and the buckling piece positioning hole 5-8 are correspondingly arranged, the lower end of the rear part 7-3 is provided with a concave part 7-4, the concave part 7-4 is matched with the buckling piece positioning block 5-7, a part of the lower end of the rear part 7-3 is inserted into the buckling piece positioning hole 5-8, the top ends of the first side baffle plate 5-2 and the second side baffle plate 5-3 are respectively provided with a positioning clamping groove 5-9, the inner sides of the buckling piece 7 corresponding to the positioning clamping grooves 5-9 are respectively provided with a positioning protruding block 7-5, and the side surfaces of the first side baffle plate 5-2 and the second side baffle plate 5-3 are respectively provided with a positioning stop block 5-10, and the positioning stop block 5-10 is used for limiting the positions of two side parts 7-2 of the buckling piece 7. The combination of the concave portion 7-4, the lower end of the rear portion 7-3, the positioning projection 7-5, and the fastener locking projection 7-6 on the fastener 7 with the fastener positioning block 5-7, the fastener positioning hole 5-8, and the fastener locking hole 5-11 on the upper housing 5 forms a snap-fit design that cannot be removed once assembled unless broken. So that the user cannot disassemble the assembly.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (9)
1. An air pressure switch, characterized in that: the device comprises a lower shell and an upper shell, wherein an upper opening of the lower shell is provided with an air inlet, an opening is formed in the bottom of the lower shell, the lower shell is connected with the upper shell in a clamping mode, a plurality of positioning devices are arranged on the upper shell and the lower shell, a rubber cushion, a first micro-motion piece, a second micro-motion piece and a third micro-motion piece are sequentially arranged between the lower shell and the upper shell, a guide rail matched with the third micro-motion piece is arranged on the upper shell, a through hole is formed in the upper shell, a first side baffle and a second side baffle are fixedly connected to two sides of the through hole respectively, a micro-motion switch is arranged between the first side baffle and the second side baffle, a contact part of the micro-motion switch is downwards aligned with the third micro-motion piece, a buckling piece is connected to fix the micro-motion switch through the buckling piece, an opening is formed in the lower end of the buckling piece, a sintered filter fitting is arranged in the bottom of the lower shell, and the air hole and the air cushion and the air inlet are covered by the rubber cushion.
2. A pneumatic switch as claimed in claim 1, wherein: the positioning device comprises a positioning rib which is arranged on the upper shell or the lower shell and has a triangular cross section, the corresponding positioning rib is provided with a positioning slot with the lower shell or the upper shell which is matched with the positioning rib, and one edge of the positioning rib is aligned with and inserted into the positioning slot for accurately positioning the upper shell and the lower shell.
3. A pneumatic switch as claimed in claim 2, wherein: the positioning device comprises a positioning concave part arranged on the lower shell or the upper shell, and a positioning protrusion is arranged on the upper shell or the lower shell which is matched with the positioning concave part corresponding to the positioning concave part.
4. A pneumatic switch as claimed in claim 3, wherein: the top of lower casing is equipped with a plurality of positioning concave parts, and the lateral wall of upper casing is equipped with a plurality of positioning protrusion, and positioning protrusion and positioning concave part cooperation confirm the joint position of upper casing and lower casing.
5. A pneumatic switch as defined in claim 4, wherein: the upper shell or the lower shell is provided with a plurality of clamping protrusions, the lower shell or the upper shell matched with the clamping protrusions is provided with a plurality of clamping holes, and the clamping protrusions and the clamping holes are matched and fixed with the upper shell and the lower shell.
6. A pneumatic switch as defined in claim 5, wherein: the side wall of the upper shell is provided with a plurality of clamping protrusions near the bottom, corresponding to the clamping protrusions, and the side wall of the lower shell is provided with a plurality of clamping holes.
7. A pneumatic switch as claimed in claim 1, wherein: the buckling piece comprises an integrally formed top, two side parts and a rear part, wherein the two side parts of the buckling piece are respectively positioned at the two sides of the first side baffle and the second side baffle, and the two side parts are respectively clamped with the corresponding side baffles.
8. A pneumatic switch as defined in claim 7, wherein: the rear part of the buckling piece is provided with a micro switch, one end of a first side baffle and one end of a second side baffle, the upper shell is provided with a buckling piece positioning block and a buckling piece positioning hole, a concave part is arranged at the lower end of the rear part and is matched with the buckling piece positioning block, a part of the lower end of the rear part is inserted into the buckling piece positioning hole, the top ends of the first side baffle and the second side baffle are respectively provided with a positioning clamping groove, positioning protruding blocks are arranged at the inner sides of buckling pieces corresponding to the positioning clamping grooves, and positioning stop blocks are respectively arranged on the side surfaces of the first side baffle and the second side baffle and are used for limiting the positions of two side parts of the buckling piece.
9. A pneumatic switch and automated assembly process as claimed in any one of claims 1 to 8 wherein: comprises the following steps of the method,
step one, pressing a sintering filter fitting into an air hole of a prefabricated lower shell by adopting a stamping die;
step two, a rubber cushion is put into the upper opening of the lower shell, and the rubber cushion covers the air hole and the air inlet;
step three, placing a first micro-motion piece from an upper opening of the lower shell;
step four, the prefabricated upper shell is clamped with the lower shell from top to bottom under pressure, and the positions of the upper shell and the lower shell are determined according to a plurality of positioning devices during clamping;
step five, placing a second micro-motion piece and a third micro-motion piece at the through hole of the upper shell;
step six, the contact part of the micro-switch faces downwards and is aligned with a third micro-motion piece, and the micro-switch is arranged between the first side baffle and the second side baffle;
step seven, buckling the buckling piece from top to bottom, wherein the buckling piece is clamped on the upper shell;
and step eight, automatically detecting the function of the air switch by a machine, performing six air pressure circulation pulses, and checking whether the air switch is turned on and off three times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438914.2A CN114220704B (en) | 2021-11-29 | 2021-11-29 | Pneumatic switch and automatic assembly process method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438914.2A CN114220704B (en) | 2021-11-29 | 2021-11-29 | Pneumatic switch and automatic assembly process method |
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| Publication Number | Publication Date |
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| CN114220704A CN114220704A (en) | 2022-03-22 |
| CN114220704B true CN114220704B (en) | 2024-01-30 |
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| CN202111438914.2A Active CN114220704B (en) | 2021-11-29 | 2021-11-29 | Pneumatic switch and automatic assembly process method |
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| CN211858513U (en) * | 2020-03-18 | 2020-11-03 | 中山雄益精密机电有限公司 | Wind pressure switch |
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| US20090242363A1 (en) * | 2008-03-31 | 2009-10-01 | Tze-Chiang Lin | Pressure switch |
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| CN114220704A (en) | 2022-03-22 |
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