CN110148540B - Travel switch - Google Patents
Travel switch Download PDFInfo
- Publication number
- CN110148540B CN110148540B CN201910438316.1A CN201910438316A CN110148540B CN 110148540 B CN110148540 B CN 110148540B CN 201910438316 A CN201910438316 A CN 201910438316A CN 110148540 B CN110148540 B CN 110148540B
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- China
- Prior art keywords
- button
- spring
- assembly
- supporting rod
- binding post
- Prior art date
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- 238000003825 pressing Methods 0.000 claims description 35
- 241000773945 Trimusculidae Species 0.000 claims description 30
- 238000005452 bending Methods 0.000 claims description 30
- 239000010935 stainless steel Substances 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010960 cold rolled steel Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
- H01H2013/525—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch using a return spring acting perpendicular to the actuating direction
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention provides a travel switch, which solves the problems that the existing travel switch contact piece is easy to damage, the whole service life of a product is lower, and the volume of the existing travel switch is larger. The travel switch comprises an upper end cover assembly, an action assembly, a fixed column, a lower end cover, a threaded cylinder and a locking assembly. The invention prolongs the service life of the travel switch, reduces the reject ratio of part production, saves the cost and improves the consistency and the reliability of the whole switch.
Description
Technical Field
The invention belongs to the technical field of travel switches, and particularly relates to a travel switch.
Background
Most of the existing travel switches cannot achieve the indexes of high strength, strong environmental resistance and the like, the contact piece is easy to damage, the whole service life of the product is low, and the existing travel switch is large in size.
Disclosure of Invention
In order to solve the technical problems, the invention provides the travel switch which is small in size, long in service life and strong in environmental resistance.
In order to achieve the above purpose, the invention adopts the following technical scheme: a travel switch comprises an upper end cover assembly, an action assembly, a fixed column, a lower end cover, a threaded cylinder and a locking assembly; the upper end cover assembly comprises an upper end cover and a button assembly, a through hole is formed in the center of the upper end cover, the button assembly is rolled at the through hole, fixing columns are riveted on two sides of the button assembly respectively, the fixing columns are arranged in an inner cavity of the upper end cover, inner threads are arranged on the inner periphery of the upper end of the fixing columns and used for being connected with a butt joint piece, outer threads are arranged at the lower end of the fixing columns, the button assembly is vertically arranged on the upper end cover, the action assembly is arranged in the inner cavity of the upper end cover, the button assembly is matched with the action assembly to realize contact on-off state switching, the lower ends of the two fixing columns penetrate the action assembly and are respectively fixed with two threaded cylinders arranged in the lower end cover in a threaded connection mode, the action assembly is clamped and fixed in the upper end cover assembly and the lower end cover, and the lower end of the two threaded cylinders are respectively fixed with the lower end cover through locking assemblies.
Further, the button assembly includes a button, a second spring, a third spring, a bushing, a locking ring, an internal tooth pad, a stainless steel washer, a rubber flat washer, a sealing washer, and an insulator;
the button comprises a button shell, a clamping ring, a sliding block contact body and a first spring; the inner cavity of the button shell is provided with a first spring, the lower end of the first spring is sleeved with a sliding block contact body, the upper end of the sliding block contact body is arranged in the inner cavity of the button shell, the periphery of the lower end of the sliding block contact body is processed into threads, the insulating piece is screwed into the lower end of the sliding block contact body through threads to be fixed, so that the insulating effect of the button is achieved, a clamping ring is arranged between the bottom end of the button shell and the sliding block contact body, the edge of the bottom end of the button shell is riveted inwards, and the clamping ring supports the sliding block contact body so that the sliding block contact body cannot slide out of the button shell;
the button is arranged in the bushing in a vertical direction with the insulating part facing downwards, the bushing is riveted in the through hole of the upper end cover, a second spring and a third spring which are concentrically arranged are arranged in the bushing, the second spring and the third spring are sleeved on the periphery of the button, the upper end of the periphery of the button shell is provided with a groove, an internal tooth gasket is clamped in the groove, the lower surface of the internal tooth gasket is contacted with the top ends of the second spring and the third spring, a stainless steel gasket is sleeved on the periphery of the button shell above the internal tooth gasket, an annular boss is arranged on the inner periphery of the bushing, the stainless steel gasket is arranged above the annular boss, a rubber flat gasket and a sealing gasket are sequentially arranged above the stainless steel gasket, the rubber flat gasket and the sealing gasket are respectively sleeved on the periphery of the button shell, a locking ring is arranged above the sealing gasket, and the locking ring is sleeved on the periphery of the button shell and is in press fit with the bushings 1-2-4 in an interference manner;
when the button is pressed downwards, the button drives the internal tooth gaskets to downwards compress the second spring and the third spring, and when the button is released, the second spring and the third spring up, so that the button and the internal tooth gaskets are restored to the original positions;
further, the action assembly comprises a lower shell, a double-lug gasket, a contact piece, a pressing piece, a first binding post, a second binding post 6, a third binding post, a first square nut, a second square nut, a third square nut, a first rivet, an H3 bonding sheet, an HP bonding sheet, a supporting rod and a fourth spring; the lower shell is a cylinder with an opening at the upper part, a bulge is formed by downwards extending the center of the bottom surface of the cylinder, a circular groove is formed in the center of the bulge, a rectangular limit groove which is arranged in the vertical direction is formed below the circular groove, a first boss and a second boss are respectively arranged at two sides of the inside of the cylinder, a first binding post and a second binding post are respectively and vertically arranged on the first boss, a third binding post and a first rivet are respectively and vertically arranged on the second boss, 2 circular through holes are formed in the inverted U-shaped double-lug gaskets, the 2 circular through holes are respectively sleeved on the first binding post and the first rivet, the double-lug gaskets are arranged above the first boss and the second boss, a pressing piece is arranged above the double-lug gaskets, the first rivet is used for tightening and fixing the double-lug gaskets and the pressing piece, an H3 binding post is arranged on the second binding post and is used for tightening and fixing the second binding post by adopting the second square nut, an HP binding post is arranged on the third binding post and is used for tightening and fixing the third binding post, the H3 binding post and the tail end is provided with the inverted U-shaped double-lug gaskets and the pressing piece is arranged between the double-lug gaskets and the double-lug gaskets; the lower extreme of bracing piece is arranged in the rectangle spacing groove, and the upper end of bracing piece wears out the compress tightly the piece and is blocked by the compress tightly the piece, and the bracing piece periphery cover below the compress tightly the piece is equipped with fourth spring, and the tail end and the bracing piece of contact piece are fixed, and the bracing piece is along with the reciprocating motion of fourth spring up-and-down motion in the rectangle spacing groove in the vertical direction to drive the front end of contact piece and reciprocate between H3 strap and HP strap, realize the front end and the H3 strap contact or the HP strap contact of contact.
Further, the compressing sheet comprises a T-shaped compressing sheet body, a vertically downward bending body is arranged at the middle part of the tail end of the compressing sheet body, a bump is arranged at the bottom end of the bending body, and a square through hole with a round angle is formed in the inner periphery, which is used for the top end of the supporting rod to penetrate out, of the compressing sheet body;
further, the whole supporting rod is rectangular plate-shaped, protrusions are respectively arranged on two sides above the rectangular plate, a rectangular opening is formed in the rectangular plate between the two protrusions, and square grooves are respectively formed in the left side and the right side in the rectangular opening;
the top end of the supporting rod penetrates out of the square through hole of the pressing piece, the pressing piece is arranged above the two bulges, the fourth spring is sleeved on the supporting rod below the two bulges and is vertically arranged in the round groove of the lower shell together, the lower end of the supporting rod is arranged in the rectangular limiting groove, and the supporting rod moves up and down along the vertical direction in the rectangular limiting groove along with the reciprocating movement of the fourth spring;
further, the contact piece comprises a contact piece body of a rectangular frame body, a first circular through hole is formed in the rear end of the contact piece body, a protruding block of the pressing piece is arranged in the circular through hole to limit movement of the contact piece, a convex connecting piece is formed by extending the middle position of the inner side of the tail end of the contact piece body forwards, the long edges of the two sides of the rectangular frame body are bent twice to form a first bending part and a second bending part, a second circular through hole is formed in the front end of the contact piece body, a second rivet is arranged in the second circular through hole, and a protruding part is formed by extending the middle position of the contact piece body forwards at the front end of the second circular through hole, so that the contact piece is prevented from being laterally displaced in the lower shell; the lowest point of the first bending part is propped against the bottom surface of the cylinder body, the top point of the first bending part is propped against the lower surface of the pressing piece, the front end of the convex connecting piece is arranged in a square groove in the rectangular opening of the supporting rod, when the button does not apply pressure, the front end of the second bending part and the contact piece body are upwards Fang Qiaoqi, the front end of the contact piece body is arranged in a gap between the H3 bonding sheet and the HP bonding sheet, the second rivet is contacted with the lower surface of the HP bonding sheet, the button is pressed downwards, the supporting rod is stressed together with the convex connecting piece of the contact piece body, the supporting rod vertically moves downwards in the rectangular limiting groove, the convex connecting piece is driven by downward force to drive the second bending part and the front end of the contact piece body to move downwards together, when the button is pressed downwards to the maximum stroke, the topmost end of the supporting rod is parallel to the plane of the square through hole on the pressing piece, and at the moment, the second rivet is contacted with the upper surface of the H3 bonding sheet, and contact is completed.
Further, the locking assembly comprises a full locking screw, a flat washer and an elastic washer, wherein the threaded end of the full locking screw is vertically arranged in the lower end cover and is matched with the threads of the threaded cylinder to fix the full locking screw with the threaded cylinder, and the flat washer and the elastic washer are arranged between the lower end cover and the full locking screw. And the full locking screw is externally safeguarded by a phi 0.5 stainless steel fuse.
Further, a first O-shaped sealing ring is arranged between the upper end cover and the lower shell of the action assembly, and a second O-shaped sealing ring is arranged between the upper end cover and the lower end cover.
Further, the contact piece is manufactured by stamping and bending a stainless steel cold-rolled steel strip 07Cr17Ni7 Al.
Compared with the prior art, the invention has the following beneficial effects: through the structural design of the button assembly and the action assembly, two concentric springs are arranged on the periphery of the button in the button assembly, so that the operation flexibility of the button assembly is enhanced, meanwhile, the contact piece is punched and bent by adopting the stainless steel cold-rolled steel strip 07Cr17Ni7Al, the contact piece is not easy to damage, the requirement of a travel switch on the service life is enhanced, the fixing mode between the upper end cover assembly and the lower end cover and between the upper end cover assembly and the action assembly is reduced, the product volume is reduced, a first O-shaped sealing ring is arranged between the upper end cover and the lower shell of the action assembly, and a second O-shaped sealing ring is arranged between the upper end cover and the lower end cover, so that the environmental resistance of the product is enhanced, and the product can adapt to more and more severe use conditions. The invention reduces the reject ratio of the part production, saves the cost and improves the consistency and the reliability of the whole switch.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of a button assembly;
FIG. 4 is a schematic view of the structure of the push button;
FIG. 5 is a schematic structural view of an action assembly;
FIG. 6 is a schematic diagram of FIG. 5 in semi-section;
FIG. 7 is a schematic view of the structure of a contact pad;
FIG. 8 is a schematic structural view of a hold-down tab;
FIG. 9 is a schematic view of the structure of the support bar;
FIG. 10 is a schematic structural view of a control cable assembly;
FIG. 11 is a schematic view of the overall construction of the travel switch and control cable assembly;
in the figure: 1-an upper end cap assembly; 2-an action component; 3-fixing columns; 4-a lower end cover; 5-a threaded cylinder; 6-locking assembly; 7-a first O-shaped sealing ring; 8-a second O-shaped sealing ring; 9-a first cable; 10-a second cable; 11-a third cable;
1-1-an upper end cover; 1-2-button assembly; 1-2-1-buttons; 1-2-1-1-button housing; 1-2-1-2-collar; 1-2-1-3-slider contacts; 1-2-1-4-first springs; 1-2-1-5-grooves; 1-2-2-second springs; 1-2-3-third springs; 1-2-4-bushing; 1-2-4-1-annular boss; 1-2-5-locking ring; 1-2-6-internal tooth gaskets; 1-2-7 stainless steel washers; 1-2-8-rubber plain washers; 1-2-9-sealing gasket; 1-2-10-insulating member;
2-1-lower shell; 2-1-1-projections; 2-1-2-circular grooves; 2-1-3-rectangular limit grooves; 2-1-4-first bosses; 2-1-5-second boss; 2-2-binaural shims; 2-3-contact pieces; 2-4-compacting sheets; 2-5-first binding post; 2-6-second binding post; 2-7-third binding post; 2-8-first square nuts; 2-9-second square nuts; 2-10-third square nuts; 2-11-first rivets; 2-12-H3 strap; 2-13-HP strap; 2-14-supporting rods; 2-15-fourth springs;
2-3-1-contact body; 2-3-2- "convex" shape connecting piece; 2-3-3-first bending part; 2-3-4-second bending parts; 2-3-5-second circular through holes; 2-3-6-second rivet; 2-3-7-protrusions; 2-3-8-first circular through holes;
2-4-1-T type compaction sheet body; 2-4-2-bent body; 2-4-3-bump; 2-4-4-square through holes;
2-14-1-bulge; 2-14-2-rectangular openings; 2-14-3-square grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-2, a travel switch comprises an upper end cover assembly, an action assembly 2, a fixed column 3, a lower end cover 4, a threaded cylinder 5 and a locking assembly 6; the upper end cover assembly comprises an upper end cover 1-1 and a button assembly 1-2, a through hole is formed in the center of the upper end cover 1-1, the button assembly 1-2 is rolled at the through hole, fixing columns 3 are riveted on two sides of the button assembly 1-2 respectively, the fixing columns 3 are arranged in an inner cavity of the upper end cover 1-1, inner threads are arranged on the inner periphery of the upper ends of the fixing columns 3 and used for being connected with a butt joint piece, outer threads are arranged at the lower ends of the fixing columns 3, the button assembly 1-2 is vertically arranged on the upper end cover 1-1, the action assembly 2 is arranged in the inner cavity of the upper end cover 1-1, the button assembly 1-2 is matched with the action assembly 2 to realize contact on-off state switching, the lower ends of the two fixing columns 3 penetrate through the action assembly 2 and are respectively fixed with two thread barrels 5 arranged in a lower end cover 4 in a threaded connection mode, the action assembly 2 is clamped and fixed in the upper end cover assembly and the lower end cover 4, the lower ends of the two thread barrels 5 are respectively fixed with the lower end cover 4 through a locking assembly 6 and the lower end cover 4, and the upper end cover assembly and the lower end cover 4 are fixed.
Referring to fig. 3, the button assembly 1-2 includes a button 1-2-1, a second spring 1-2-2, a third spring 1-2-3, a bushing 1-2-4, a locking ring 1-2-5, an internal tooth spacer 1-2-6, a stainless steel washer 1-2-7, a rubber flat washer 1-2-8, a sealing washer 1-2-9, and an insulator 1-2-10;
referring to fig. 4, the button 1-2-1 includes a button housing 1-2-1-1, a collar 1-2-1-2, a slider contact 1-2-1-3, and a first spring 1-2-1-4; the button comprises a button shell body 1-2-1-1, wherein a first spring 1-2-1-4 is arranged in an inner cavity of the button shell body 1-2-1-1, a sliding block contact body 1-2-1-3 is sleeved at the lower end of the first spring 1-2-1-4, the upper end of the sliding block contact body 1-2-1-3 is arranged in the inner cavity of the button shell body 1-2-1, M2 threads are processed on the periphery of the lower end of the sliding block contact body 1-2-1-3, an insulating piece 1-2-10 is screwed into the lower end of the sliding block contact body 1-2-1-3 through the threads to fix the lower end of the sliding block contact body, the insulating effect of the button is achieved, a clamping ring 1-2-1-2 is arranged between the bottom end of the button shell body 1-2-1-1 and the sliding block contact body 1-2-1-3, and the edge of the bottom end of the button shell body 1-2-1-1 is riveted inwards, and the sliding block contact body 1-2-1-3 is supported by the sliding block contact body 1-2-1-3 so that the sliding block contact body cannot slide out of the button shell body 1-2-1-3;
the button 1-2-1 is arranged in the bushing 1-2-4 in a vertical direction with the insulator 1-2-10 facing downwards, the bushing 1-2-4 is riveted in the through hole of the upper end cover 1-1, the second spring 1-2-2 and the third spring 1-2-3 which are concentrically arranged are arranged in the bushing 1-2-4, the second spring 1-2 and the third spring 1-2-3 are sleeved on the periphery of the button 1-2-1, the upper end of the periphery of the button shell 1-2-1-1 is provided with a groove 1-2-1-5, the inner tooth pad 1-2-6 is clamped in the groove 1-2-1-5, the lower surface of the inner tooth gasket 1-2-6 is contacted with the top ends of the second spring 1-2-2 and the third spring 1-2-3, the stainless steel gasket 1-2-7 is sleeved on the periphery of the button shell 1-2-1 above the inner tooth gasket 1-2-6, the annular boss 1-2-4-1 is arranged on the inner periphery of the bushing 1-2-4, the stainless steel gasket 1-2-7 is arranged above the annular boss 1-2-4-1, the rubber flat gasket 1-2-8 and the sealing gasket 1-2-9 are sequentially arranged above the stainless steel gasket 1-2-7, the rubber flat gasket 1-2-8 and the sealing gasket 1-2-9 are respectively sleeved on the periphery of the button shell 1-2-1, a locking ring 1-2-5 is arranged above the sealing gasket 1-2-9, and the locking ring 1-2-5 is sleeved on the periphery of the button shell 1-2-1-1 and is in pressure connection with the bushing 1-2-4 in an interference manner;
when the button 1-2-1 is pressed downwards, the button 1-2-1 drives the internal tooth gaskets 1-2-6 to compress the second spring 1-2-2 and the third spring 1-2-3 downwards, and when the button 1-2-1 is released, the second spring 1-2-2 and the third spring 1-2-3 spring up, so that the button 1-2-1 and the internal tooth gaskets 1-2-6 are restored to original positions;
referring to fig. 5 to 6, the actuating assembly 2 includes a lower case 2-1, a binaural pad 2-2, a contact piece 2-3, a pressing piece 2-4, a first terminal 2-5, a second terminal 2-6, a third terminal 2-7, a first square nut 2-8, a second square nut 2-9, a third square nut 2-10, a first rivet 2-11, an H3 strap 2-12, an HP strap 2-13, a support bar 2-14, and a fourth spring 2-15; the lower shell 2-1 is arranged in the upper end cover 1-1, the lower shell 2-1 is a cylinder with an upper opening, a protruding part 2-1-1 is formed by extending downwards from the center of the bottom surface of the cylinder, a circular groove 2-1-2 is arranged in the center of the protruding part 2-1-1, a rectangular limit groove 2-1-3 which is arranged in the vertical direction is arranged below the circular groove 2-1-2, a first boss 2-1-4 and a second boss 2-1-5 are respectively arranged at two sides of the inside of the cylinder, a first binding post 2-5 and a second binding post 2-6 are respectively and vertically arranged on the first boss 2-1-4, a third binding post 2-7 and a first rivet 2-11 are respectively and vertically arranged on the second boss 2-1-5, the inverted U-shaped double-lug gasket 2-2 is provided with 2 circular through holes, the 2 circular through holes are respectively sleeved on the first binding post 2-5 and the first rivet 2-11, the double-lug gasket 2-2 is arranged above the first boss 2-1-4 and the second boss 2-1-5, the compression piece 2-4 is arranged above the double-lug gasket 2-2, the first binding post 2-5 is screwed and fixed by adopting the first square nut 2-8, the double-lug gasket 2-2 and the compression piece 2-4 are riveted and fixed by the first rivet 2-11, the H3 bonding sheet 2-12 is arranged on the second binding post 2-6 and screwed and fixed by adopting the second square nut 2-9, the third binding post 2-7 is provided with an HP bonding sheet 2-13 and is screwed and fixed by adopting a third square nut 2-10, a gap is reserved between the H3 bonding sheet 2-12 and the HP bonding sheet 2-13, and the tail end of the contact sheet 2-3 is arranged between the compression sheet 2-4 and the groove of the inverted U-shaped double-lug gasket 2-2; the lower end of the supporting rod 2-14 is arranged in the rectangular limiting groove, the upper end of the supporting rod 2-14 penetrates through the pressing piece 2-4 and is clamped by the pressing piece 2-4, the periphery of the supporting rod 2-14 below the pressing piece 2-4 is sleeved with the fourth spring 2-15, the tail end of the contact piece 2-3 is fixed with the supporting rod 2-14, the supporting rod 2-14 moves vertically in the rectangular limiting groove along with the reciprocating motion of the fourth spring 2-15, and accordingly the front end of the contact piece 2-3 is driven to move up and down between the H3 bonding sheet and the HP bonding sheet, and the front end of the contact piece 2-3 is contacted with the H3 bonding sheet or the HP bonding sheet.
Referring to fig. 8, the compressing sheet 2-4 includes a T-shaped compressing sheet body 2-4-1, a vertically downward bending body 2-4-2 is provided at the middle part of the tail end of the compressing sheet body 2-4-1, a bump 2-4-3 is provided at the bottom end of the bending body 2-4-2, a square through hole 2-4-4 with rounded corners is provided at the front end of the compressing sheet body 2-4-1 for the supporting rod 2-14 to penetrate out from the top end;
referring to fig. 9, the support rod 2-14 is in a rectangular plate shape as a whole, two sides above the rectangular plate are respectively provided with a protrusion 2-14-1, a rectangular opening 2-14-2 is arranged on the rectangular plate between the two protrusions 2-14-1, and square grooves 2-14-3 with round corners are respectively arranged on the left side and the right side in the rectangular opening 2-14-2;
the top end of the supporting rod 2-14 penetrates out of the square through hole 2-4-4 of the pressing piece 2-4, the pressing piece 2-4 is arranged above the two bulges 2-14-1, the fourth spring 2-15 is sleeved on the supporting rod 2-14 below the two bulges 2-14-1 and is vertically arranged in the round groove 2-1-2 of the lower shell 2-1 together, the lower end of the supporting rod 2-14 is arranged in the rectangular limit groove 2-1-3, and the supporting rod 2-14 moves up and down along the vertical direction in the rectangular limit groove 2-1-3 along with the reciprocating movement of the fourth spring 2-15;
referring to fig. 7, the contact piece 2-3 includes a contact piece body 2-3-1 of a rectangular frame, a first circular through hole 2-3-8 is provided at the rear end of the contact piece body, a bump 2-4-3 of a pressing piece is disposed in the circular through hole 2-3-8 to limit movement of the contact piece, a middle position of the inner side of the rear end of the contact piece body 2-3-1 extends forward to form a convex connecting piece 2-3-2, two long sides of the rectangular frame are bent at corresponding positions to form a first bent portion 2-3-3 and a second bent portion 2-3-4, the first bent portion 2-3 is a straight line type inclined toward the lower end, the second bent portion is a Λ type, the first bent portion and the second bent portion are connected by a straight section, a second circular through hole 2-3-5 is provided at the front end of the contact piece body 2-3-1, a second rivet 2-3-6 is mounted in the second circular through hole 2-3-5, and the front end of the contact piece 2-3-5 extends forward to form a front part 2-3-3 at the middle position of the second circular through hole 2-3-5 to form a non-horizontal displacement in the housing; the lowest point of the first bending part 2-3-3 is propped against the bottom surface of the cylinder, the top point of the first bending part 2-3-3 is propped against the lower surface of the pressing piece 2-4, the front end of the convex connecting piece 2-3-2 is arranged in a square groove in the rectangular opening of the supporting rod, when the button 1-2-1 does not apply pressure, the front end of the second bending part 2-3-4 and the contact piece body 2-3-1 are upwards Fang Qiaoqi, the front end of the contact piece body 2-3-1 is arranged in a gap between the H3 bonding sheet 2-12 and the HP bonding sheet 2-13, the second rivet 2-3-6 is contacted with the lower surface of the HP bonding sheet 2-13, the button 1-2-1 is pressed downwards, the supporting rod 2-14 is connected with the convex connecting piece 2-3-2 of the contact piece 2-3 body and is stressed together, the supporting rod 2-14 vertically moves downwards in the rectangular limiting groove 2-1-3, the convex connecting piece 2-3-2 is driven by downward force to drive the second bending part 2-3-4 and the front end of the contact body to move downwards together, the second rivet 2-3-6 at the front end of the contact piece body 2-3-1 is separated from the H3 bonding sheet 2-12, when the push button 1-2-1 is pressed downwards to reach the maximum stroke, the topmost end of the supporting rod 2-14 is parallel to the plane of the square through hole 2-4-4 on the pressing piece 2-4, at the moment, the second rivet 2-3-6 is contacted with the upper surface of the H3 bonding sheet 2-12, and finishing the switching of the contacts.
After the first binding post 2-5, the second binding post 2-6 and the third binding post 2-7 are respectively screwed with the first square nut 2-8, the second square nut 2-9 and the third square nut 2-10, four points are respectively and uniformly riveted on the end surfaces of the tail parts of the screws of the first binding post 2-5, the second binding post 2-6 and the third binding post 2-7 to prevent the nuts from loosening and falling.
Referring to fig. 2, the locking assembly 6 includes a full locking screw 6-1, a flat washer 6-2 and an elastic washer 6-3, wherein a threaded end of the full locking screw 6-1 is vertically installed in the lower end cap 4, and the full locking screw 6-1 is fixed with the threaded cylinder 5 in cooperation with threads of the threaded cylinder 5, and the flat washer 6-2 and the elastic washer 6-3 are installed between the lower end cap 4 and the full locking screw 6-1. And the full locking screw 6-1 is externally secured with a phi 0.5 stainless steel fuse.
Referring to fig. 2, a first O-ring 7 is installed between the upper cover 1-1 and the lower case 2-1 of the actuating assembly 2, and a second O-ring 8 is installed between the upper cover 1-1 and the lower cover 4.
The contact piece 2-3 is made by stamping and bending a stainless steel cold-rolled steel strip 07Cr17Ni7 Al.
Referring to fig. 2, the bottom end of the lower end cover 4 is further provided with a through hole 4-1 for the cable to penetrate.
The stainless steel cold-rolled steel strip 07Cr17Ni7Al for the spring has good conductivity and good elasticity, is suitable for being used as a material of an elastic piece, and the contact piece 2-3 is subjected to aging treatment after being bent and molded, so that the HV of the part is more than or equal to 360, the contact piece is ensured to have good hardness and elasticity, and the contact piece is not easy to damage and deform due to stress. The spring piece adopts the arc transition corner when bending, avoids the part fracture that the hard angle caused of bending, improves the yield of part promptly, when can making the switch state again, contact deformation atress is more dispersed, does not concentrate on bending department a bit, improves the part life-span to promote the whole life-span of product.
The bushings 1-2-4 are machined from lead brass bars.
The travel switch of this embodiment belongs to the engine in-place signal judging device, and is connected with a first cable 9, a second cable 10 and a third cable 11 of a control cable assembly (KZDL 195 series control cable) shown in fig. 10 when in use, the first cable 9, the second cable 10 and the third cable 11 respectively connected with the pins 1, 2 and 3 penetrate into a lower end cover from a through hole 4-1, and connection terminals on the first cable 9, the second cable 10 and the third cable 11 are respectively connected with a first binding post 2-5, a second binding post 2-6 and a third binding post 2-7 in a threaded manner and fixed:
the corresponding connection points of the travel switch are shown in Table 1:
table 1 corresponds to the junction point
As shown in the table above, the switch contact "O" is a common contact, "H3" is a normally open contact, "HP" is a normally closed contact, and when the travel switch button of the present invention is pressed to the maximum travel, the normally closed contact is turned off, the normally open contact is turned on, the pins "3" and "1" on the electrical connector plug are turned off, and the pins "2" and "1" are turned on. When the travel switch button is released, the normally open contact is disconnected, the normally closed contact is connected, the contact pin '2' and '1' on the electric connector plug are disconnected, and the contact pin '3' and '1' are connected. For the action of possibly touching the button by mistake, when the button is stressed to move by a small amount of strokes, the first spring is arranged in the button, so that part of the mistaken pressing force applied to the button can be neutralized, the contact piece is not prevented from converting the contact, and when the button is pressed by excessively, part of force can be neutralized by the first spring in the button, the over-stroke protection effect can be achieved, and the product is not damaged, so that the performance of the travel switch is not influenced.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (5)
1. The travel switch is characterized by comprising an upper end cover assembly, an action assembly, a fixed column, a lower end cover, a threaded cylinder and a locking assembly; the upper end cover assembly comprises an upper end cover and a button assembly, a through hole is formed in the center of the upper end cover, the button assembly is rolled at the through hole, fixing columns are riveted on two sides of the button assembly respectively, the fixing columns are arranged in an inner cavity of the upper end cover, inner threads are arranged on the inner periphery of the upper end of the fixing columns and used for being connected with a butt joint part, outer threads are arranged at the lower end of the fixing columns, the button assembly is vertically arranged on the upper end cover, the action assembly is arranged in the inner cavity of the upper end cover, the button assembly is matched with the action assembly to realize contact on-off state switching, the lower ends of the two fixing columns penetrate through the action assembly and are respectively fixed with two threaded cylinders arranged in the lower end cover in a threaded connection mode, the action assembly is clamped and fixed in the upper end cover assembly and the lower end cover, the lower ends of the two threaded cylinders are respectively fixed with the lower end cover through locking assemblies, and the upper end cover assembly is fixed with the lower end cover;
the button assembly includes a button, a second spring, a third spring, a bushing, a locking ring, an internal tooth washer, a stainless steel washer, a rubber flat washer, a sealing washer, and an insulator;
the button comprises a button shell, a clamping ring, a sliding block contact body and a first spring; the inner cavity of the button shell is provided with a first spring, the lower end of the first spring is sleeved with a sliding block contact body, the upper end of the sliding block contact body is arranged in the inner cavity of the button shell, the periphery of the lower end of the sliding block contact body is processed into threads, the insulating piece is screwed into the lower end of the sliding block contact body through threads to be fixed, so that the insulating effect of the button is achieved, a clamping ring is arranged between the bottom end of the button shell and the sliding block contact body, the edge of the bottom end of the button shell is riveted inwards, and the clamping ring supports the sliding block contact body so that the sliding block contact body cannot slide out of the button shell;
the button is arranged in the bushing in a vertical direction with the insulating part facing downwards, the bushing is riveted in the through hole of the upper end cover, a second spring and a third spring which are concentrically arranged are arranged in the bushing, the second spring and the third spring are sleeved on the periphery of the button, the upper end of the periphery of the button shell is provided with a groove, an internal tooth gasket is clamped in the groove, the lower surface of the internal tooth gasket is contacted with the top ends of the second spring and the third spring, a stainless steel gasket is sleeved on the periphery of the button shell above the internal tooth gasket, an annular boss is arranged on the inner periphery of the bushing, the stainless steel gasket is arranged above the annular boss, a rubber flat gasket and a sealing gasket are sequentially arranged above the stainless steel gasket, the rubber flat gasket and the sealing gasket are respectively sleeved on the periphery of the button shell, a locking ring is arranged above the sealing gasket, and the locking ring is sleeved on the periphery of the button shell and is in press fit with the bushing in an interference manner;
when the button is pressed downwards, the button drives the internal tooth gaskets to downwards compress the second spring and the third spring, and when the button is released, the second spring and the third spring up, so that the button and the internal tooth gaskets are restored to the original positions;
the action assembly comprises a lower shell, a double-lug gasket, a contact piece, a pressing piece, a first binding post, a second binding post, a third binding post, a first square nut, a second square nut, a third square nut, a first rivet, an H3 bonding sheet, an HP bonding sheet, a supporting rod and a fourth spring; the lower shell is a cylinder with an opening at the upper part, a bulge is formed by downwards extending the center of the bottom surface of the cylinder, a circular groove is formed in the center of the bulge, a rectangular limit groove which is arranged in the vertical direction is formed below the circular groove, a first boss and a second boss are respectively arranged at two sides of the inside of the cylinder, a first binding post and a second binding post are respectively and vertically arranged on the first boss, a third binding post and a first rivet are respectively and vertically arranged on the second boss, 2 circular through holes are formed in the inverted U-shaped double-lug gaskets, the 2 circular through holes are respectively sleeved on the first binding post and the first rivet, the double-lug gaskets are arranged above the first boss and the second boss, a pressing piece is arranged above the double-lug gaskets, the first rivet is used for tightening and fixing the double-lug gaskets and the pressing piece, an H3 binding post is arranged on the second binding post and is used for tightening and fixing the second binding post by adopting the second square nut, an HP binding post is arranged on the third binding post and is used for tightening and fixing the third binding post, the H3 binding post and the tail end is provided with the inverted U-shaped double-lug gaskets and the pressing piece is arranged between the double-lug gaskets and the double-lug gaskets; the lower end of the supporting rod is arranged in the rectangular limiting groove, the upper end of the supporting rod penetrates out of the pressing piece and is clamped by the pressing piece, the periphery of the supporting rod below the pressing piece is sleeved with a fourth spring, the tail end of the contact piece is fixed with the supporting rod, and the supporting rod moves up and down in the vertical direction along with the reciprocating motion of the fourth spring in the rectangular limiting groove, so that the front end of the contact piece is driven to move up and down between the H3 bonding sheet and the HP bonding sheet, and the front end of the contact piece is contacted with the H3 bonding sheet or the HP bonding sheet;
the pressing piece comprises a T-shaped pressing piece body, wherein a vertically downward bending body is arranged at the middle part of the tail end of the pressing piece body, a bump is arranged at the bottom end of the bending body, and a square through hole with a round angle is formed in the front end of the pressing piece body, and the inner periphery of the square through hole penetrates out from the top end of the supporting rod;
the whole support rod is rectangular plate-shaped, protrusions are respectively arranged on two sides above the rectangular plate, a rectangular opening is formed in the rectangular plate between the two protrusions, and square grooves are respectively formed in the left side and the right side of the rectangular opening;
the top end of the supporting rod penetrates out of the square through hole of the pressing piece, the pressing piece is arranged above the two bulges, the fourth spring is sleeved on the supporting rod below the two bulges and is vertically arranged in the round groove of the lower shell together, the lower end of the supporting rod is arranged in the rectangular limiting groove, and the supporting rod moves up and down along the vertical direction in the rectangular limiting groove along with the reciprocating movement of the fourth spring;
the contact piece comprises a contact piece body of a rectangular frame body, a first circular through hole is formed in the rear end of the contact piece body, a protruding block of the pressing piece is arranged in the first circular through hole to limit movement of the contact piece, a convex connecting piece is formed by extending the middle position of the inner side of the tail end of the contact piece body forwards, the long edges of the two sides of the rectangular frame body are bent twice to form a first bending part and a second bending part, a second circular through hole is formed in the front end of the contact piece body, a second rivet is arranged in the second circular through hole, and a protruding part is formed by extending the middle position of the contact piece body forwards at the front end of the second circular through hole, so that the contact piece is prevented from being laterally displaced in a lower shell; the lowest point of the first bending part is propped against the bottom surface of the cylinder body, the top point of the first bending part is propped against the lower surface of the pressing piece, the front end of the convex connecting piece is arranged in a square groove in the rectangular opening of the supporting rod, when the button does not apply pressure, the front end of the second bending part and the contact piece body are upwards Fang Qiaoqi, the front end of the contact piece body is arranged in a gap between the H3 bonding sheet and the HP bonding sheet, the second rivet is contacted with the lower surface of the HP bonding sheet, the button is pressed downwards, the supporting rod is stressed together with the convex connecting piece of the contact piece body, the supporting rod vertically moves downwards in the rectangular limiting groove, the convex connecting piece is driven by downward force to drive the second bending part and the front end of the contact piece body to move downwards together, when the button is pressed downwards to the maximum stroke, the topmost end of the supporting rod is parallel to the plane of the square through hole on the pressing piece, and at the moment, the second rivet is contacted with the upper surface of the H3 bonding sheet, and contact is completed.
2. A travel switch according to claim 1, wherein the locking assembly comprises a full locking screw, a flat washer and an elastic washer, the threaded end of the full locking screw being vertically installed in the lower end cap and being engaged with the threads of the threaded cylinder to fix the full locking screw with the threaded cylinder, the flat washer and the elastic washer being installed between the lower end cap and the full locking screw and externally securing the full locking screw with a phi 0.5 stainless steel fuse.
3. A travel switch according to claim 1, wherein a first O-ring is mounted between the upper end cap and the lower housing of the actuating assembly, and a second O-ring is mounted between the upper end cap and the lower end cap.
4. A travel switch according to claim 1, wherein the contact piece is made by stamping and bending a stainless steel cold-rolled strip 07Cr17Ni7 Al.
5. A travel switch as defined in claim 1, wherein said bottom end cap bottom end is further provided with a through hole for the passage of a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438316.1A CN110148540B (en) | 2019-05-24 | 2019-05-24 | Travel switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438316.1A CN110148540B (en) | 2019-05-24 | 2019-05-24 | Travel switch |
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| Publication Number | Publication Date |
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| CN110148540A CN110148540A (en) | 2019-08-20 |
| CN110148540B true CN110148540B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910438316.1A Active CN110148540B (en) | 2019-05-24 | 2019-05-24 | Travel switch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113671576A (en) * | 2021-07-23 | 2021-11-19 | 苏州瑞力特通信科技有限公司 | Intelligent inspection well cover monitor |
| US20230407673A1 (en) * | 2022-06-20 | 2023-12-21 | Yondr, Inc. | Lock with Integrated Engagement Indicator |
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|---|---|---|---|---|
| US3288973A (en) * | 1965-04-16 | 1966-11-29 | Cutler Hammer Inc | Push-push switch convertible to momentary switch |
| JP2004247188A (en) * | 2003-02-14 | 2004-09-02 | Sagami Denshi Kogyo:Kk | Push-button switch |
| JP2011003306A (en) * | 2009-06-16 | 2011-01-06 | Mik Denshi Kohgyo Co Ltd | Push-button switch |
| CN102629528A (en) * | 2012-04-14 | 2012-08-08 | 桂林航天电子有限公司 | Clapping contact travel switch |
| CN103594272A (en) * | 2013-11-25 | 2014-02-19 | 中航光电科技股份有限公司 | Physical separation type stroke control switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10237282B4 (en) * | 2001-08-20 | 2022-11-10 | Omron Corp. | Switches, push button switches and rotary lever switches |
| US7652216B2 (en) * | 2007-12-18 | 2010-01-26 | Streamlight, Inc. | Electrical switch, as for controlling a flashlight |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288973A (en) * | 1965-04-16 | 1966-11-29 | Cutler Hammer Inc | Push-push switch convertible to momentary switch |
| JP2004247188A (en) * | 2003-02-14 | 2004-09-02 | Sagami Denshi Kogyo:Kk | Push-button switch |
| JP2011003306A (en) * | 2009-06-16 | 2011-01-06 | Mik Denshi Kohgyo Co Ltd | Push-button switch |
| CN102629528A (en) * | 2012-04-14 | 2012-08-08 | 桂林航天电子有限公司 | Clapping contact travel switch |
| CN103594272A (en) * | 2013-11-25 | 2014-02-19 | 中航光电科技股份有限公司 | Physical separation type stroke control switch |
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| CN110148540A (en) | 2019-08-20 |
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