CN218004689U - Pedal button switch - Google Patents

Abstract

The utility model belongs to the technical field of foot switch technique and specifically relates to a foot button switch. It includes shell, gland and sealed lid, and shell one side joint has the gland, and shell top joint has sealed lid, and sealed inside slip of lid is pegged graft and is had the button, and button bottom sliding connection still includes inside the shell: normally closed movable contact piece subassembly, contact spring, normally open movable contact piece subassembly, reset spring, lower push rod, well push rod and button, the inside button bottom that is located of shell is equipped with well push rod, and well push rod top is pegged graft with the button slip, and well push rod below is equipped with normally closed movable contact piece subassembly, and well push rod bottom and normally closed movable contact piece subassembly slip are pegged graft, and normally closed movable contact piece subassembly below is equipped with contact spring. The utility model provides a pedal button switch just can control the separation between the contact through pressing the button, and the structure is different from the PIC product completely, and normally closed contact and normally open contact all realize forcing the disconnection function, prevent to touch the bonding, and the function is more reliable, and the price is low.

Description

Pedal button switch

Technical Field

The utility model belongs to the technical field of foot switch technique and specifically relates to a foot button switch.

Background

In the exported electric baby carriage, most foot switches used in the electric baby carriage are American PIC brands which are expensive and have patent protection all the time, so that the domestic electric baby carriage has no similar products, and the existing foot switches are expensive and have patent protection (ZL 201320092784.6 and ZL 201330037315. X) and always dominate the electric baby carriage market.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the problem that the price is expensive, with high costs that exists among the background art, provides a dependable performance, pedal button switch with low costs.

The technical scheme of the utility model: a foot-operated push-button switch comprising: shell, gland and sealed lid, shell one side joint has the gland, and shell top joint has sealed lid, and sealed inside slip of covering is pegged graft there is the button, and button bottom sliding connection still includes inside the shell: normally closed movable contact piece component, contact spring, normally open movable contact piece component, reset spring, lower push rod, middle push rod and button, the shell is internally provided with a middle push rod at the bottom end of the button, the top end of the middle push rod is in sliding insertion with the button, the normally closed movable contact piece component is arranged below the middle push rod, the bottom end of the middle push rod is in sliding insertion with the normally closed movable contact piece component, the contact spring is arranged below the normally closed movable contact piece component, the top end of the contact spring is sleeved outside the bottom end of the middle push rod, the bottom end of the contact spring is in contact with the normally open movable contact piece component, the normally closed movable contact piece component is in elastic connection with the normally open movable contact piece component through the contact spring, the lower push rod is arranged below the normally open movable contact piece component, the lower push rod is in clamping connection with the middle push rod, the reset spring is arranged below the lower push rod, the top end of the reset spring is sleeved outside the bottom end of the lower push rod, one end of the reset spring is fixedly connected with the inner wall corresponding to the shell, the lower push rod is preferably connected with the inner wall of one side corresponding to the shell through the reset spring, the normally closed foot component and the normally open foot component are sequentially embedded into the shell, the common foot component and the normally open foot component are sequentially embedded into the shell, the common foot component and the normally closed foot component, and the normally open foot component.

Preferably, the normally closed foot component comprises a normally closed foot and a first normally closed stationary contact, the normally closed foot is fixedly connected inside the shell, the bottom end of the normally closed foot penetrates through the shell to be exposed in the air, the top end of the normally closed foot is embedded and fixed with the first normally closed stationary contact, the normally closed movable contact component comprises a normally closed movable contact and a normally closed movable contact, the normally closed movable contact is sleeved outside the bottom end of the middle push rod, the normally closed movable contact is fixedly embedded in two sides of the top of the normally closed movable contact, the normally open movable contact component comprises a normally open movable contact and a normally open movable contact, the normally open movable contact is arranged on the top of the lower push rod, the normally open movable contact is fixedly embedded and fixed on two sides of the top of the normally open movable contact, the normally open foot component comprises a normally closed foot and a first normally open stationary contact, the normally open foot is fixedly connected inside the shell, the normally open end penetrates through the shell to be exposed in the air, the normally open stationary contact is embedded and fixed on the top of the public foot, the normally closed stationary contact and the second normally closed stationary contact.

Preferably, the first normally closed stationary contact and the second normally closed stationary contact are respectively contacted with the corresponding normally closed moving contact, and the first normally open stationary contact and the second normally open stationary contact are respectively contacted with the corresponding normally open moving contact.

Preferably, a sealing ring is arranged between the top of the shell and the sealing cover.

Preferably, the equal equidistance fixedly connected with fixture block in shell both sides, the bar groove has been seted up to the equal distance in gland both sides, and the fixture block all is with the bar groove looks joint that corresponds.

Preferably, the center of the top of the normally open movable contact assembly is fixedly connected with a bulge, and the bottom end of the contact spring is sleeved outside the bulge.

Preferably, the bottom ends of the normally closed foot assembly, the normally open foot assembly and the public foot assembly are provided with round holes.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model provides a pedal button switch just can control the separation between the contact through pressing the button, and the structure is different from the PIC product completely, and normally closed contact and normally open contact all realize forcing the disconnection function, prevent to touch the bonding, and the function is more reliable, the price is low.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of FIG. 1;

FIG. 3 is a cross-sectional view of the overall structure of FIG. 1;

FIG. 4 is a left side view of the overall structure of FIG. 1;

FIG. 5 is a schematic exploded view of the overall structure of FIG. 1;

FIG. 6 is a disassembled schematic view of the normally closed foot assembly of FIG. 5;

FIG. 7 is a schematic illustration of a disassembled normally closed movable contact assembly of FIG. 5;

FIG. 8 is a schematic diagram showing the normally open movable contact assembly of FIG. 5 in a disassembled configuration;

FIG. 9 is a schematic exploded view of the normally open foot assembly of FIG. 5;

FIG. 10 is a schematic exploded view of the common leg assembly of FIG. 5;

fig. 11 is a schematic diagram of the switching circuit according to the present invention.

Reference numerals: 1. a housing; 2. a normally closed leg assembly; 3. a normally closed movable contact piece assembly; 4. a contact spring; 5. a normally open movable contact piece assembly; 6. a normally open foot assembly; 7. a return spring; 8. a common leg assembly; 9. a gland; 10. a lower push rod; 11. a middle push rod; 12. a seal ring; 13. a sealing cover; 14. a button; 15. a clamping block; 16. a strip-shaped groove; 17. a protrusion; 18. a circular hole; 21. a normally closed pin; 22. a first normally closed stationary contact; 31. normally closing the movable contact spring; 32. normally closing the movable contact; 51. a normally open movable contact spring; 52. A normally open movable contact; 61. normally open feet; 62. a first normally open stationary contact; 81. a common leg; 82. a second normally closed stationary contact; 83. and a second normally open stationary contact.

Detailed Description

As shown in fig. 1 to 11, the utility model provides a foot-operated button switch, including: shell 1, gland 9 and sealed lid 13, 1 one side joint of shell has gland 9, and 1 top joint of shell has sealed lid 13, and the inside slip grafting of sealed lid 13 has button 14, and 14 bottom sliding connection of button still include inside 1 shell: normally closed movable contact piece component 3, contact spring 4, normally open movable contact piece component 5, reset spring 7, lower push rod 10, middle push rod 11 and button 14, wherein middle push rod 11 is arranged inside shell 1 and located at the bottom end of button 14, the top end of middle push rod 11 is in sliding insertion connection with button 14, normally closed movable contact piece component 3 is arranged below middle push rod 11, the bottom end of middle push rod 11 is in sliding insertion connection with normally closed movable contact piece component 3, contact spring 4 is arranged below normally closed movable contact piece component 3, the top end of contact spring 4 is sleeved on the outer side of the bottom end of middle push rod 11, normally open movable contact piece component 5 is arranged below contact spring 4, the bottom end of contact spring 4 is in contact with normally open movable contact piece component 5, normally closed movable contact piece component 3 is in elastic connection with normally open movable contact piece component 5 through contact spring 4, lower push rod 10 is arranged below normally open movable contact piece component 5, lower push rod 10 is in clamping connection with middle push rod 11, reset spring 7 is arranged below lower push rod 10, the top end of reset spring 7 is sleeved on the outer side of lower push rod 10, one end of reset spring 7 is fixedly connected with the inner wall corresponding to shell 1, and lower push rod 10 is in elastic connection with one side corresponding to shell 1 through reset spring 7.

The pedal switch circuit is characterized in that three pins form a normally closed circuit and a normally open circuit, the initial state is that a normally closed pin 21 and a public pin 81 form a loop for conduction in the interior, when a downward pressing force is applied to a button 14, the button 14 pushes a middle push rod 11 to move downwards, the middle push rod 11 drives a normally closed movable contact 31, a contact spring 4, a normally open movable contact assembly 5 and a lower push rod 10 to move downwards together, the normally closed movable contact 31 moves downwards, two normally closed movable contacts 32 are separated from a first normally closed fixed contact 22 and a second normally closed fixed contact 82 respectively, the normally closed end is disconnected, when the pedal switch moves downwards for a certain position, two normally open movable contacts 52 on the normally open movable contact assembly 5 are separated from a first normally open fixed contact 62 on the normally open pin assembly 6 and a second normally open fixed contact 83 on the public pin assembly 8, the public pin 81 and the normally open pin 61 form a loop for conduction through switch internal parts, when the pressing force on the button 14 is cancelled, a reset spring 7 pushes the lower push rod 10, the middle push rod 11, the button 14, the normally closed movable contact 31, the normally open movable contact 4 and the normally open movable contact 5.

As shown in fig. 1 to 5, a normally closed leg assembly 2, a common leg assembly 8 and a normally open leg assembly 6 are sequentially embedded and fixed in the housing 1, and the bottom ends of the normally closed leg assembly 2, the common leg assembly 8 and the normally open leg assembly 6 penetrate through the housing 1 and are exposed in the air.

The three pins form a normally closed and a normally open circuit.

As shown in fig. 5 to 10, the normally closed leg assembly 2 includes a normally closed leg 21 and a first normally closed stationary contact 22, the normally closed leg 21 is fixedly connected inside the housing 1, and the bottom end of the normally closed leg 21 passes through the housing 1 and is exposed in the air, the top end of the normally closed leg 21 is embedded and fixed with the first normally closed stationary contact 22, the normally closed movable contact assembly 3 includes a normally closed movable contact 31 and a normally closed movable contact 32, the normally closed movable contact 31 is sleeved outside the bottom end of the middle push rod 11, both sides of the top of the normally closed movable contact 31 are embedded and fixed with the normally closed movable contact 32, the normally open movable contact assembly 5 includes a normally open movable contact 51 and a normally open movable contact 52, the normally open movable contact 51 is disposed at the top of the lower push rod 10, both sides of the top of the normally open movable contact 51 are embedded and fixed with the normally open movable contact 52, the normally open leg assembly 6 includes a normally open leg 61 and a first stationary contact 62, the normally open leg 61 is fixedly connected inside the housing 1, and the bottom end of the normally open movable contact 61 passes through the housing 1 and is exposed in the air, the normally open stationary contact 81, the normally closed stationary contact 81 and the normally closed stationary contact 81, and the normally closed stationary contact 83, and the common stationary contact 81.

And corresponding loop conduction is formed through the contact between the contacts.

As shown in fig. 3 and 5, the first and second normally-closed stationary contacts 22 and 82 are respectively in contact with the corresponding normally-closed movable contact 32.

The circuit is controlled by the separation and contact between the contacts.

As shown in fig. 3 and 5, a packing 12 is provided between the top of the housing 1 and the sealing cover 13. The sealing ring 12 provides water and dust protection at the button 14.

As shown in fig. 2 and 5, the equal-distance fixture blocks 15 are fixedly connected to two sides of the housing 1, the strip-shaped grooves 16 are formed in two sides of the gland 9 at equal distances, and the fixture blocks 15 are clamped with the corresponding strip-shaped grooves 16.

Assembly between the housing 1 and the gland 9 is facilitated.

As shown in fig. 5 and 8, a protrusion 17 is fixedly connected to the center of the top of the normally open moving contact member 5, and the bottom end of the contact spring 4 is sleeved outside the protrusion 17.

The projection 17 prevents the contact spring 4 from being deflected.

As shown in fig. 2 and 4, the bottom ends of the normally closed leg assembly 2, the normally open leg assembly 6 and the common leg assembly 8 are all provided with round holes 18.

The plug-in connection with other matching components is more stable and firm.

The utility model provides a pedal button switch's theory of operation as follows: the pedal switch circuit is characterized in that three pins form a normally closed circuit and a normally open circuit, the initial state is that a normally closed pin 21 and a public pin 81 form a loop conduction inside, when a downward pressing force is applied to a button 14, the button 14 pushes a middle push rod 11 to move downwards, the middle push rod 11 drives a normally closed movable contact piece 31, a contact spring 4, a normally open movable contact piece assembly 5 and a lower push rod 10 to move downwards together, and the normally closed movable contact piece 31 moves downwards, so that two normally closed movable contacts 32 are separated from a first normally closed stationary contact 22 and a second normally closed stationary contact 82 respectively, and the normally closed end is disconnected; when the normally open moving contact piece component 5 moves downwards for a certain position, the two normally open moving contacts 52 on the normally open moving contact piece component 5 are contacted with the first normally open fixed contact 62 on the normally open pin component 6 and the second normally open fixed contact 83 on the common pin component 8, so that the common pin 81 and the normally open pin 61 form a loop through the internal parts of the switch to be conducted; when the pressure on the button 14 is cancelled, the lower push rod 10 is pushed by the return spring 7, and the lower push rod 10, the middle push rod 11, the button 14, the normally closed movable contact spring 31, the contact spring 4 and the normally open movable contact spring assembly 5 are all reset;

the product parts can be enlarged or reduced for combination, and the structure belongs to the protection range as long as the reason and the function are unchanged;

the button 14, the middle push rod 11 and the lower push rod 10 are split into three parts, and can be combined into one part or two parts according to functions;

when the switch is pressed, the middle push rod 11 forcibly drives the normally closed movable contact piece 31 to enable the normally closed end of the switch to achieve the function of forced disconnection;

the middle push rod 11 is provided with a curved guide post to make the normally open movable contact 51 move in a dislocation way, so as to prevent the normally open static contact and the normally open movable contact 52 from being displaced and staggered forcibly when being bonded by large current, and meanwhile, the lower push rod 10 and the middle push rod 11 are provided with inclined plane matching to make the movable contact achieve the function of moving in a dislocation way;

the middle push rod 11 is provided with a curved guide column shape, which is displaced rightwards in the embodiment, and the matching size of product parts can be changed into leftwards;

the normally closed foot component 2 is composed of two parts, and can also be combined into one part to achieve the function;

the normally closed moving contact component 3 is now divided into three pieces, and can be synthesized into one part to achieve the function;

the common foot component 8 is formed by three pieces, and can also be formed by two parts to achieve the function;

the contact surfaces of the movable contact and the fixed contact can be made into a grid shape, a plane or an arc surface and the like;

the movable contact and the static contact can be made of silver-nickel alloy, silver-cadmium alloy or silver-tin alloy. The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims (8)

1. A foot-operated push-button switch comprising: shell (1), gland (9) and sealed lid (13), shell (1) one side joint has gland (9), shell (1) top joint has sealed lid (13), sealed lid (13) inside slip is pegged graft and is had button (14), button (14) bottom sliding connection is inside shell (1), its characterized in that still includes: the spring-type touch screen is characterized by comprising a normally closed movable contact piece assembly (3), a contact spring (4), a normally open movable contact piece assembly (5), a reset spring (7), a lower push rod (10), a middle push rod (11) and a button (14), wherein the middle push rod (11) is arranged at the bottom end of the button (14) inside the shell (1), the top end of the middle push rod (11) is in sliding insertion with the button (14), the normally closed movable contact piece assembly (3) is arranged below the middle push rod (11), the normally closed movable contact piece assembly (11) is in sliding insertion with the normally closed movable contact piece assembly (3), the contact spring (4) is arranged below the contact spring (4), the top end of the contact spring (4) is sleeved outside the bottom end of the middle push rod (11), the normally open movable contact piece assembly (5) is arranged below the contact spring (4), the normally open movable contact piece assembly (4) is in contact with the normally open movable contact assembly (5), the normally closed movable contact piece assembly (3) is in elastic connection with the normally open movable contact assembly (5) through the contact spring (4), the lower push rod (10) is arranged below the normally open movable contact assembly (5), the lower push rod (10) is clamped with the middle push rod (11), the reset spring (7), and the reset spring (7) is arranged outside the reset spring (7), one end of the reset spring (7) is fixedly connected with the inner wall of one side corresponding to the shell (1), and the lower push rod (10) is elastically connected with the inner wall of one side corresponding to the shell (1) through the reset spring (7).

2. The foot button switch according to claim 1, wherein: the novel air conditioner is characterized in that a normally closed foot assembly (2), a public foot assembly (8) and a normally open foot assembly (6) are sequentially embedded into the shell (1), and the bottom ends of the normally closed foot assembly (2), the public foot assembly (8) and the normally open foot assembly (6) penetrate through the shell (1) and are exposed in the air.

3. A foot-operated push-button switch according to claim 2, wherein: normally closed foot subassembly (2) is including normally closed foot (21) and first normally closed stationary contact (22), normally closed foot (21) fixed connection is in the inside of shell (1), and the bottom of normally closed foot (21) passes shell (1) and exposes in the air, the top embedding of normally closed foot (21) is fixed with first normally closed stationary contact (22), normally closed movable contact subassembly (3) are including normally closed movable contact piece (31) and normally closed movable contact (32), normally closed movable contact piece (31) cover is in the bottom outside of well push rod (11), normally closed movable contact piece (31) top both sides all embedding are fixed with normally closed movable contact (32), normally open movable contact subassembly (5) is including normally open movable contact piece (51) and normally open movable contact (52), normally open movable contact piece (51) set up push rod (10) top down, normally open movable contact piece (51) top both sides all embedding are fixed with normally open movable contact (52), normally open foot subassembly (6) is including normally open foot (61) and normally open movable contact (62), stationary contact (61) fixed connection is in the shell (1), the inside fixed connection of normally open movable contact (61), common contact (81) is passed the air and the exposed foot (1), exposed stationary contact (8) is included in the bottom (1), normally open movable contact (61), normally open movable contact (1) top, second normally closed stationary contact (82) and second normally open stationary contact (83), public foot (81) fixed connection is inside shell (1), and just public foot (81) bottom passes shell (1) and exposes in the air, public foot (81) top embedding is fixed with second normally closed stationary contact (82) and second normally open stationary contact (83).

4. A foot button switch according to claim 3, wherein: the first normally closed static contact (22) and the second normally closed static contact (82) are respectively contacted with the corresponding normally closed moving contact (32), and the first normally open static contact (62) and the second normally open static contact (83) are respectively contacted with the corresponding normally open moving contact (52).

5. The foot-operated button switch according to claim 1, wherein: and a sealing ring (12) is arranged between the top of the shell (1) and the sealing cover (13).

6. The foot-operated button switch according to claim 1, wherein: equal equidistance fixedly connected with fixture block (15) in shell (1) both sides, bar groove (16) have been seted up to gland (9) both sides equal equidistance, fixture block (15) all with bar groove (16) looks joint that corresponds.

7. The foot button switch according to claim 1, wherein: the normally open movable contact assembly (5) is characterized in that a bulge (17) is fixedly connected to the center of the top of the normally open movable contact assembly, and the bottom end of the contact spring (4) is sleeved on the outer side of the bulge (17).

8. A foot-operated push-button switch according to claim 2, wherein: round holes (18) are formed in the bottom ends of the normally closed foot component (2), the normally open foot component (6) and the public foot component (8).

Images