CN213277877U

CN213277877U - Detection switch

Info

Publication number: CN213277877U
Application number: CN202022838393.7U
Authority: CN
Inventors: 杨超
Original assignee: Yueqing Cnrjc Electric Co ltd
Current assignee: Yueqing Cnrjc Electric Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-05-25
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a detection switch, which comprises a shell, a button, a first pin and a second pin, wherein a guide hole is arranged above the shell, a first mounting hole and a second mounting hole are arranged below the shell, an operation cavity is arranged inside the shell, the button is arranged on the guide hole, the inner end of the first pin penetrates through the first mounting hole and extends into the operation cavity, and the inner end of the second pin penetrates through the second mounting hole and extends into the operation cavity; still include reset spring and electric contact piece, the button includes linkage piece and presses the depression bar, presses the depression bar to run through the guide hole and extend the casing outside, and linkage piece and reset spring all set up in the operation chamber, and the electric contact piece is installed on the linkage piece, is equipped with the first contact site that offsets with first pin and the second contact site that offsets with the second pin on the electric contact piece, and reset spring's one end is supported on the electric contact piece, and reset spring's the other end supports on the inner wall of casing. The utility model has the advantages of long stroke, large contact range and wider application range.

Description

Detection switch

Technical Field

The utility model relates to an electrical components technical field, concretely relates to detect switch.

Background

The detection switch is also called a key switch, and is a device which is used for applying pressure to the switch operation direction under the condition of meeting the operation force to close and switch on the switch function when in use, and the switch is switched off when the pressure is relieved, and the internal structure of the detection switch is switched on and off by the stress change of a metal elastic sheet.

Traditional detection switch includes the casing, button and elastic contact piece, the casing bottom sets up first pin and second pin, be provided with the operation chamber in the casing, be provided with the first electric contact piece of being connected with first pin electricity and the second electric contact piece of being connected with the second pin electricity in the operation chamber, make elastic contact piece warp and offset with first point contact piece and second electric contact piece simultaneously through pressing down the button, constitute the intercommunication of first pin and second pin, the extrusion force of button disappears the back, elastic contact piece relies on the elasticity that self has to separate with first electric contact piece or second electric contact piece and resets the button to initial condition, constitute the disconnection of first pin and second pin.

In the structure, the communication between the first pin and the second pin needs the elastic contact piece to simultaneously abut against the first contact piece and the second contact piece when the elastic contact piece deforms, however, the deformation range of the elastic contact piece is small, and the elastic contact piece can abut against the first contact piece and the second contact piece only when the elastic contact piece deforms to a certain position, so that the structure has the defects of short stroke, small contact range and small use range.

Therefore, a detection switch is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detection switch, the utility model has the advantages of the stroke is long, contact range is big and application range is more extensive.

In order to achieve the above object, the utility model provides a following technical scheme: a detection switch comprises a shell, a button, a first pin and a second pin, wherein a guide hole is formed in the upper portion of the shell, a first mounting hole and a second mounting hole are formed in the lower portion of the shell, an operation cavity is formed in the shell, the button is arranged on the guide hole in a sliding mode along the axial direction, the inner end of the first pin penetrates through the first mounting hole and extends into the operation cavity, and the inner end of the second pin penetrates through the second mounting hole and extends into the operation cavity; still include reset spring and electric contact piece, the button includes the linkage piece and sets up the press rod on the linkage piece, press the press rod to run through the guide hole and extend the casing outside, linkage piece and reset spring all set up in the operation chamber, the electric contact piece install in on the linkage piece, be equipped with the first contact site that offsets with first pin and the second contact site that offsets with the second pin on the electric contact piece, reset spring's one end is supported on the electric contact piece, and reset spring's the other end supports on the inner wall of casing.

By adopting the technical scheme, when a pressing rod on the button is pressed, the pressing rod drives the linkage block and the electric contact sheet arranged on the linkage block to overcome the spring force of the reset spring to do work and move downwards, when the first contact part and the second contact part on the electric contact sheet respectively abut against the first pin and the second pin, the first pin and the second pin are conducted, and the first contact part and the second contact part respectively slide corresponding strokes on the surfaces of the first pin and the second pin and always keep the conduction state of the first pin and the second pin when the pressing rod drives the linkage block and the electric contact sheet arranged on the linkage block to move downwards continuously, after the button extrusion force disappears, the reset spring releases energy to push the electric contact sheet and the button to move upwards to reset the electric contact sheet and the button to the initial position, and disconnection of the first pin and the second pin is formed. Therefore, the utility model has the advantages of the stroke is long, contact range is big and application range is more extensive, simultaneously, uses reset spring to reset to the button and has longe-lived and good effect of feeling.

The utility model discloses further set up to, the bottom of linkage piece is equipped with the mounting groove, along the vertical location spout of having seted up on the lateral wall of mounting groove, the electric contact piece sets up in the mounting groove to be equipped with the location convex part with location spout looks adaptation on the electric contact piece.

Through adopting above-mentioned technical scheme, can guarantee the stability of electric contact piece installation.

The utility model discloses further set up to, be equipped with on the linkage piece with the communicating circular extension groove of mounting groove, be equipped with the reference column on the inner wall of casing, reset spring's one end inlay establish with circular extension groove in, reset spring's other pot head is established in the reference column periphery.

Through adopting above-mentioned technical scheme, can fix a position reset spring, improve the stability of its installation.

The utility model discloses further set up to, along the vertical spacing spout of having seted up on the inner wall of casing, be equipped with on the linkage piece with the spacing slider of spacing spout looks adaptation.

Through adopting above-mentioned technical scheme, can carry out circumference spacing to the linkage piece, make it can only follow axial displacement, promote the stability of its motion in-process.

The utility model is further arranged in that the first contact part comprises two oppositely arranged first arc-shaped elastic pieces which are arranged at one end of the electric contact piece close to the first pin, and the two first arc-shaped elastic pieces are close to each other and form a first clamping gap for clamping the inner end of the first pin; the second contact part comprises two oppositely arranged second arc-shaped elastic sheets arranged at one end, close to the second pin, of the electric contact sheet, and the two second arc-shaped elastic sheets are close to each other and form a second clamping gap for clamping the inner end of the second pin.

Through adopting above-mentioned technical scheme, can improve the stability of electric contact piece and first pin and the contact of second pin to guarantee the stable of first pin and second pin and switch on.

The utility model discloses further set up to, the first via hole that supplies the inner of first pin to pass is seted up to one side of linkage piece, and the second via hole that supplies the inner of second pin to pass is seted up to the opposite side of linkage piece.

By adopting the technical scheme, the interference between the linkage block and the first pin and the interference between the linkage block and the second pin during movement can be avoided, the effect of protecting the first pin and the second pin is achieved, and the normal displacement stroke of the linkage block can be ensured.

The utility model discloses further set up to, the rubber sleeve is installed to the outer end that lies in the guide hole on the casing, the rubber sleeve cover is established in the press ram periphery.

Through adopting above-mentioned technical scheme, can avoid steam and dust to pass through the guide hole inner wall and enter into the operation chamber with the clearance between the pressure bar, play waterproof dirt-proof effect, be applicable to adverse circumstances.

The utility model discloses further set up to, the bottom of rubber sleeve is equipped with the first flange that extends to the periphery, and the cross-section is seted up for triangle-shaped's first separation groove in the bottom surface of first flange, the top of rubber sleeve is equipped with the second flange that extends to interior week, and interior week of second flange is equipped with the second separation groove that the cross-section is triangle-shaped, set up the first draw-in groove that agrees with mutually with first flange on the casing, be equipped with the protruding muscle of first separation that agrees with mutually with first separation groove in the first draw-in groove, set up the second draw-in groove that agrees with mutually with the second flange on the pressure bar, be equipped with the protruding muscle of second separation that agrees with mutually with second separation groove in the second draw-in groove.

Through adopting above-mentioned technical scheme, not only can promote the fastness of rubber sleeve installation, can further strengthen its waterproof dirt-proof effect moreover.

The utility model discloses further set up to, first pin middle part passes through glued joint with the pore wall of first mounting hole, second pin middle part also passes through glued joint with the pore wall of second mounting hole.

Through adopting above-mentioned technical scheme, can avoid steam and dust to enter into the operation chamber through the clearance between two pins and the mounting hole inner wall that corresponds, play waterproof dirt-proof effect, be applicable to adverse circumstances.

The utility model discloses further set up to, it is protruding to be equipped with a plurality of location on the outer wall of casing.

By adopting the technical scheme, the whole positioning installation is facilitated, the installation and the positioning are more accurate, and the stability and the reliability in the use process are enhanced.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic view of the structure of the electrical contact strip and the first pin of the present invention;

fig. 5 is a schematic view of the mounting structure of the electric contact pad and the button according to the present invention;

fig. 6 is a schematic structural view of the electric contact strip of the present invention.

In the figure: 1. a housing; 2. a button; 3. a first pin; 4. a second pin; 5. a guide hole; 6. a first mounting hole; 7. a second mounting hole; 8. an operating chamber; 9. a return spring; 10. an electrical contact pad; 11. a linkage block; 12. a pressing lever; 13. a first contact portion; 14. a second contact portion; 15. mounting grooves; 16. positioning the chute; 17. a positioning projection; 18. a positioning column; 19. a circular expansion slot; 20. a limiting chute; 21. a limiting slide block; 22. a first arc-shaped elastic sheet; 23. a first clamping gap; 24. a second arc-shaped elastic sheet; 25. a second clamping gap; 26. a first via hole; 27. a second via hole; 28. a rubber sleeve; 29. a first flange; 30. a first barrier groove; 31. a second flange; 32. a second barrier groove; 33. a first card slot; 34. a first barrier rib; 35. a second card slot; 36. a second barrier rib; 37. and a positioning projection.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the utility model provides a detection switch, as shown in attached figure 1 ~ 6, including casing 1, button 2, first pin 3 and second pin 4, for convenient equipment, casing 1 can just be lower part open-ended upper shell portion and set up the bottom on the upper shell portion lower opening by cavity and constitute, and the bottom is connected with upper shell portion hot melt. A guide hole 5 is formed above the shell 1, a first mounting hole 6 and a second mounting hole 7 are formed below the shell 1, an operation cavity 8 is formed inside the shell 1, the button 2 is arranged on the guide hole 5 in an axial sliding mode, the inner end of the first pin 3 penetrates through the first mounting hole 6 and extends into the operation cavity 8, and the inner end of the second pin 4 penetrates through the second mounting hole 7 and extends into the operation cavity 8; still include reset spring 9 and electric contact piece 10, button 2 includes linkage block 11 and sets up the press rod 12 on linkage block 11, press rod 12 and linkage block 11 as an organic whole, press rod 12 runs through guide hole 5 and extends the casing 1 outside, linkage block 11 and reset spring 9 all set up in operating chamber 8, electric contact piece 10 install in on linkage block 11, be equipped with the first contact site 13 that offsets with first pin 3 and the second contact site 14 that offsets with second pin 4 on electric contact piece 10, reset spring 9's one end is supported on electric contact piece 10, and reset spring 9's the other end supports on the inner wall of casing 1, and wherein, electric contact piece 10 is pressed and is established on linkage block 11 through reset spring 9's extrusion force. When the pressing rod 12 on the button 2 is pressed, the pressing rod 12 drives the linkage block 11 and the electric contact sheet 10 arranged on the linkage block 11 to overcome the spring force of the return spring 9 to do work and move downwards, when the first contact portion 13 and the second contact portion 14 on the electrical contact 10 are respectively pressed against the first lead 3 and the second lead 4, the first lead 3 and the second lead 4 are conducted, and as the pressing rod 12 drives the linkage block 11 and the electric contact pads 10 arranged on the linkage block 11 to go down continuously, the first contact portion 13 and the second contact portion 14 slide on the surfaces of the first pin 3 and the second pin 4 by corresponding strokes respectively, and the conducting state of the first pin 3 and the second pin 4 is always kept, after the extrusion force of the button 2 disappears, the return spring 9 releases energy to push the electric contact piece 10 and the button 2 to move upwards to return the electric contact piece 10 and the button 2 to the initial position, so that the first pin 3 and the second pin 4 are disconnected.

As shown in fig. 5, a mounting groove 15 is formed at the bottom of the linkage block 11, a positioning sliding groove 16 is vertically formed on a side wall of the mounting groove 15, the electrical contact piece 10 is disposed in the mounting groove 15, and a positioning protrusion 17 adapted to the positioning sliding groove 16 is formed on the electrical contact piece 10, which can ensure the mounting stability of the electrical contact piece 10.

As shown in fig. 2 and 5, a circular expansion groove 19 communicated with the mounting groove 15 is formed in the linkage block 11, a positioning column 18 is arranged on the inner wall of the shell 1, one end of the return spring 9 is embedded in the circular expansion groove 19, the other end of the return spring 9 is sleeved on the periphery of the positioning column 18, and the structure can position the return spring 9 and improve the mounting stability of the return spring.

As shown in fig. 5, a limiting sliding groove 20 is vertically formed in the inner wall of the housing 1, a limiting sliding block 21 matched with the limiting sliding groove 20 is arranged on the linkage block 11, and the structure can circumferentially limit the linkage block 11, so that the linkage block can only move axially, and the stability of the linkage block in the movement process is improved.

As shown in fig. 5 and 6, the first contact portion 13 includes two first arc-shaped elastic pieces 22 arranged at one end of the electrical contact strip 10 close to the first pin 3, and the two first arc-shaped elastic pieces 22 are close to each other and form a first clamping gap 23 for clamping the inner end of the first pin 3; the second contact portion 14 includes two second arc-shaped elastic pieces 24 disposed at one end of the electrical contact strip 10 near the second lead 4, and the two second arc-shaped elastic pieces 24 are close to each other and form a second clamping gap 25 for clamping the inner end of the second lead 4. This structure can improve the stability of the contact of the electrical contact strip 10 with the first pin 3 and the second pin 4, thereby ensuring stable conduction of the first pin 3 and the second pin 4.

As shown in fig. 5, one side of the linkage block 11 is provided with a first via hole 26 through which the inner end of the first pin 3 passes, and the other side of the linkage block 11 is provided with a second via hole 27 through which the inner end of the second pin 4 passes. The structure can avoid interference between the linkage block 11 and the first pin 3 and the second pin 4 during movement, play a role in protecting the first pin 3 and the second pin 4, and simultaneously can ensure the normal displacement stroke of the linkage block 11.

As shown in fig. 2, a rubber sleeve 28 (connected by glue) is mounted at the outer end of the guide hole 5 on the housing 1, and the rubber sleeve 28 is sleeved on the periphery of the pressing rod 12. This structure can avoid steam and dust to enter into operation chamber 8 through guide hole 5 inner wall and the clearance of pressing between the pole 12, plays waterproof dirt-proof effect, is applicable to adverse circumstances.

As shown in fig. 3, a first flange 29 extending toward the outer periphery is disposed at the bottom end of the rubber sleeve 28, a first blocking groove 30 having a triangular cross section is disposed at the bottom surface of the first flange 29, a second flange 31 extending toward the inner periphery is disposed at the top end of the rubber sleeve 28, a second blocking groove 32 having a triangular cross section is disposed at the inner periphery of the second flange 31, a first engaging groove 33 engaged with the first flange 29 is disposed on the housing 1, a first blocking rib 34 engaged with the first blocking groove 30 is disposed in the first engaging groove 33, a second engaging groove 35 engaged with the second flange 31 is disposed on the pressing rod 12, and a second blocking rib 36 engaged with the second blocking groove 32 is disposed in the second engaging groove 35. This structure not only can promote the fastness of rubber sleeve 28 installation, can further strengthen its waterproof dirt-proof effect moreover.

The middle parts of the first pins 3 are connected with the hole walls of the first mounting holes 6 through gluing, and the middle parts of the second pins 4 are connected with the hole walls of the second mounting holes 7 through gluing. This structure can avoid steam and dust to enter into operation chamber 8 through the clearance between two pins and the mounting hole inner wall that corresponds, plays waterproof dirt-proof effect, is applicable to adverse circumstances.

As shown in the attached drawing 1, the outer wall of the shell 1 is provided with a plurality of positioning protrusions 37, and the structure is beneficial to positioning and mounting of the whole body, so that the mounting and positioning of the shell are more accurate, and the stability and reliability of the shell in the use process are enhanced.

The working principle is as follows: when the pressing rod 12 on the button 2 is pressed, the pressing rod 12 drives the linkage block 11 and the electric contact sheet 10 arranged on the linkage block 11 to overcome the spring force of the return spring 9 to do work and move downwards, when the first contact portion 13 and the second contact portion 14 on the electrical contact 10 are respectively pressed against the first lead 3 and the second lead 4, the first lead 3 and the second lead 4 are conducted, and as the pressing rod 12 drives the linkage block 11 and the electric contact pads 10 arranged on the linkage block 11 to go down continuously, the first contact portion 13 and the second contact portion 14 slide on the surfaces of the first pin 3 and the second pin 4 by corresponding strokes respectively, and the conducting state of the first pin 3 and the second pin 4 is always kept, after the extrusion force of the button 2 disappears, the return spring 9 releases energy to push the electric contact piece 10 and the button 2 to move upwards to return the electric contact piece 10 and the button 2 to the initial position, so that the first pin 3 and the second pin 4 are disconnected. Therefore, the utility model has the advantages of the stroke is long, contact range is big and application range is more extensive, simultaneously, uses reset spring 9 to reset button 2 and has longe-lived and good effect of feeling.

Claims

1. A detection switch comprises a shell (1), a button (2), a first pin (3) and a second pin (4), wherein a guide hole (5) is formed above the shell (1), a first mounting hole (6) and a second mounting hole (7) are formed below the shell (1), an operation cavity (8) is formed in the shell (1), the button (2) is arranged on the guide hole (5) in a sliding mode along the axial direction, the inner end of the first pin (3) penetrates through the first mounting hole (6) and extends into the operation cavity (8), and the inner end of the second pin (4) penetrates through the second mounting hole (7) and extends into the operation cavity (8); the method is characterized in that: still include reset spring (9) and electric contact piece (10), button (2) are including linkage block (11) and set up pressing rod (12) on linkage block (11), pressing rod (12) run through guide hole (5) and extend casing (1) outside, linkage block (11) and reset spring (9) all set up in operation chamber (8), electric contact piece (10) install in on linkage block (11), be equipped with on electric contact piece (10) first contact site (13) that offset with first pin (3) and second contact site (14) that offset with second pin (4), the one end of reset spring (9) is supported on electric contact piece (10), and the other end of reset spring (9) is supported on the inner wall of casing (1).

2. A detection switch according to claim 1, wherein: the bottom of linkage piece (11) is equipped with mounting groove (15), has seted up location spout (16) along vertical on the lateral wall of mounting groove (15), electric contact piece (10) set up in mounting groove (15) to be equipped with on electric contact piece (10) with location spout (16) looks adaptation location convex part (17).

3. A detection switch according to claim 2, wherein: be equipped with on linkage block (11) with communicating circular extension groove (19) of mounting groove (15), be equipped with reference column (18) on the inner wall of casing (1), the one end of reset spring (9) is inlayed and is established and circular extension groove (19) in, the other pot head of reset spring (9) is established in reference column (18) periphery.

4. A detection switch according to claim 1, wherein: the inner wall of the shell (1) is vertically provided with a limiting sliding groove (20), and the linkage block (11) is provided with a limiting sliding block (21) matched with the limiting sliding groove (20).

5. A detection switch according to claim 1, wherein: the first contact part (13) comprises two first arc-shaped elastic pieces (22) which are arranged at one end of the electric contact piece (10) close to the first pin (3) and are oppositely arranged, and the two first arc-shaped elastic pieces (22) are close to each other and form a first clamping gap (23) for clamping the inner end of the first pin (3); the second contact part (14) comprises two second arc-shaped elastic pieces (24) which are arranged at one end, close to the second pin (4), of the electric contact piece (10) and are arranged oppositely, and the two second arc-shaped elastic pieces (24) are close to each other and form a second clamping gap (25) used for clamping the inner end of the second pin (4).

6. A detection switch according to claim 1, wherein: and a first through hole (26) for the inner end of the first pin (3) to pass through is formed in one side of the linkage block (11), and a second through hole (27) for the inner end of the second pin (4) to pass through is formed in the other side of the linkage block (11).

7. A detection switch according to claim 1, wherein: the outer end that lies in guide hole (5) on casing (1) is installed rubber sleeve (28), rubber sleeve (28) cover is established in pressing down pole (12) periphery.

8. A detection switch according to claim 7, wherein: the bottom of rubber sleeve (28) is equipped with first flange (29) that extend to the periphery, and first separation groove (30) that the cross-section is triangle-shaped are seted up to the bottom surface of first flange (29), the top of rubber sleeve (28) is equipped with second flange (31) that extend to interior week, and the interior week of second flange (31) is equipped with second separation groove (32) that the cross-section is triangle-shaped, set up first draw-in groove (33) that agree with first flange (29) on casing (1), be equipped with in first draw-in groove (33) and first separation protruding muscle (34) that agree with first separation groove (30), set up second draw-in groove (35) that agree with second flange (31) on according to depression bar (12), be equipped with in second draw-in groove (35) and be equipped with second separation protruding muscle (36) that agree with second separation groove (32).

9. A detection switch according to claim 1, wherein: the middle parts of the first pins (3) are connected with the hole walls of the first mounting holes (6) through gluing, and the middle parts of the second pins (4) are connected with the hole walls of the second mounting holes (7) through gluing.

10. A detection switch according to claim 1, wherein: the outer wall of the shell (1) is provided with a plurality of positioning bulges (37).