CN217006186U

CN217006186U - Novel single-contact water pressure switch

Info

Publication number: CN217006186U
Application number: CN202121815527.1U
Authority: CN
Inventors: 陈怀博; 陆灿; 陈登科; 吴斌; 林雨畅; 汪磊敏
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2021-07-30
Filing date: 2021-08-04
Publication date: 2022-07-19
Anticipated expiration: 2031-08-04
Also published as: CN113611571B; CN113611571A

Abstract

The utility model provides a novel single-contact water pressure switch aiming at the problems that the overall structure of the water pressure switch in the prior art is large and the requirements of intelligent and miniaturized development of household appliances cannot be met, and belongs to the technical field of water pressure detection. The driving rod transversely rotates under the action of the thrust of the push rod assembly to further push the contact switch to act, so that the driving rod does not need to move along the moving direction of the push rod assembly, the space required by the internal switch action of a product is saved, and the height of the product is reduced; the base is used as a mounting seat of the contact switch mechanism, so that the number of product parts and required dies is reduced, and the product volume is reduced.

Description

Novel single-contact water pressure switch

Technical Field

The utility model belongs to the technical field of water pressure detection, and particularly relates to a novel single-contact water pressure switch.

Background

Water pressure switch adopts diaphragm seal usually to through the diaphragm deformation promote the drive plate make micro-gap switch break-make, the drive path of the drive version among the prior art all generally with the path that the diaphragm warp on same direction, vertically set up promptly, make the product height relatively higher, consequently the product is whole great. At present, household appliances gradually develop towards intellectualization and miniaturization, so that the conventional structure cannot meet the requirement.

Disclosure of Invention

The utility model provides a novel single-contact water pressure switch aiming at the problems that the overall structure of the water pressure switch in the prior art is large and the requirements of intelligent and miniaturized development of household appliances cannot be met. The utility model discloses a driving lever moving direction perpendicular to diaphragm deformation direction has reduced the height of product, and then makes the whole volume of product diminish.

The utility model aims to be realized by the following technical scheme: the utility model provides a novel single contact water pressure switch, includes the pedestal, the pedestal includes upper cover and lower cover, be equipped with water pressure detection mechanism and contact switch mechanism in the pedestal, water pressure detection mechanism includes the push rod subassembly that moves between upper cover and lower cover and promotes the actuating lever of contact switch subassembly action, and the actuating lever setting is on the route that push rod subassembly reciprocated.

In the above scheme, when the push rod assembly moves towards the upper cover under the action of pressure, the drive rod is pushed to transversely rotate, and then the contact switch mechanism is pushed to act. The motion directions of the push rod assembly and the driving rod assembly in the prior art are consistent, so that the overall height of a product is large, the driving rod of the utility model transversely rotates under the thrust action of the push rod assembly to further push the contact switch mechanism to act, so that the driving rod does not need to move along the motion direction of the push rod assembly, the space required by the internal switch action of the product is saved, and the height of the product of the utility model is reduced.

Preferably, the push rod assembly comprises a diaphragm, a pressing plate is arranged above the diaphragm, a through hole is formed in the middle of the pressing plate, a push rod is arranged above the pressing plate, and the bottom end of the push rod penetrates through the through hole to be in contact with the upper end face of the diaphragm. When the diaphragm is deformed under the pressure of the pressure source, the push rod is pushed to move towards the deformation direction of the diaphragm.

Preferably, the annular surface of the pressure plate presses against the annular surface edge of the diaphragm. The pressure plate can completely press the non-deformation part of the diaphragm, and the diaphragm cannot be displaced when the deformation part of the diaphragm is deformed.

Preferably, the push rod comprises at least two sections of push rod sections with diameters gradually reduced, the push rod section close to the membrane end is a basic push rod section, the diameter of the basic push rod section is the largest, at least two guide blocks are uniformly arranged on the outer side wall of the basic push rod section, and guide grooves for accommodating the guide blocks and allowing the guide blocks to pass are uniformly formed in the pressing plate, wherein the number of the guide grooves corresponds to that of the guide blocks. The foundation push rod section is ensured to move linearly along the deformation direction of the membrane, and the inclination cannot occur.

Preferably, the lower cover is provided with a membrane accommodating cavity with an opening facing the upper cover, and the middle of the membrane accommodating cavity is provided with a fluid channel communicated with the lower cover; the upper cover is provided with a guide cavity for accommodating the push rod, the top of the guide cavity is provided with an adjusting screw, and a spring is arranged between the adjusting screw and the push rod. The fluid channel is communicated with a water pressure source to enter, and the diaphragm plays a role in sealing to prevent water from entering the seat body.

Preferably, the driving rod comprises a rotating shaft rotatably mounted between the upper cover and the lower cover, a first driving section, a second driving section and a third driving section are fixedly connected to the rotating shaft in sequence, the second driving section is arc-shaped, a driving block is fixedly connected to the side face, facing the push rod, of the middle of the second driving section, and is located on a moving path of the push rod, and a fourth driving section facing the contact switch mechanism is fixedly connected to the end portion of one end, facing the reverse second driving section, of the third driving section. When the push rod moves, the push rod touches the driving block, the driving block cannot move along the moving direction of the push rod, the push rod can only push the driving block away, the driving rod rotates by taking the rotating shaft as the center of a circle, and then the fourth driving section moves towards the direction of the contact switch assembly.

Preferably, the upper cover is provided with a blocking piece, a first pressure rod and a second pressure rod which are equal in height and surround the guide cavity in a circle, the blocking piece is arranged on a track of the second driving section moved by the force of the push rod, and the blocking piece, the first pressure rod and the second pressure rod are all abutted to the pressure plate. The presence of the flap defines the maximum distance the drive rod can rotate. After the upper cover is arranged on the lower cover, the baffle sheet, the first pressure lever and the second pressure lever just press the pressure plate, so that the pressure plate cannot move due to the deformation of the membrane.

Preferably, the diameter of the second driving section is larger than or equal to that of the basic push rod section. The second drive segment is prevented from following the path of movement of the base pusher segment.

Preferably, the stud section of the adjusting screw is provided with a guide hole, the push rod section close to the adjusting screw is a guide push rod section, the diameter of the guide push rod section is smaller than the inner diameter of the guide hole, one end of the spring is sleeved on the stud section of the adjusting screw, and the diameter of the spring is smaller than that of the basic push rod section. The diameter of the guide push rod section is smaller than the inner diameter of the guide hole, so that the guide push rod section is ensured to move along the direction of the guide hole, the guide push rod section corresponds to the guide block, the two ends of the push rod have guide effects, the moving path of the push rod is ensured not to be inclined, and the consistency of driving strokes is ensured. The spring is compressed by the force of the push rod to provide a reverse force, and when the push rod is not pushed by the deformation force of the diaphragm, the reverse force of the spring can make the push rod return to the initial position.

Preferably, a groove is formed in the push rod section of the push rod except the guide push rod section and facing the driving block, the groove extends to the basic push rod section, a first inclined surface inclining downwards towards the outer surface of the basic push rod section is arranged at the bottom end of the groove, and a second inclined surface matched with the first inclined surface is arranged on the driving block and faces the first inclined surface. The contact of the first inclined plane and the second inclined plane enables the driving block to obtain the force for pushing the driving rod, and the relative position between the first inclined plane and the second inclined plane is changed, so that the rotation stroke of the driving rod can be changed, and further the starting stroke of the contact switch mechanism is changed.

Preferably, the contact switch mechanism comprises a first connecting insertion sheet and a second connecting insertion sheet, one end of the first connecting insertion sheet is fixedly arranged in the seat body, the other end of the first connecting insertion sheet extends out of the seat body, an intermediate reed arranged in parallel with the first connecting insertion sheet is lapped over the first connecting insertion sheet, one end of the intermediate reed is lapped over the end, close to the intermediate reed, of the first connecting insertion sheet, the other end of the intermediate reed is lapped over the end, close to the intermediate reed end, of a fourth driving section, a movable contact is arranged at the contact part of the intermediate reed and the first connecting insertion sheet, a fixed contact in corresponding contact with the movable contact is arranged on the first connecting insertion sheet, the fourth driving section pushes the intermediate reed to move away from the first connecting insertion sheet, a positioning sheet parallel to the intermediate reed is arranged on the moving path of the intermediate reed, a through groove is arranged in the middle of the intermediate reed, an elastic reed is arranged in the through groove, one end of the elastic reed is lapped at the end, provided with the movable contact, the other end of the elastic reed is installed on the second connecting inserting sheet, the heights of the two ends of the elastic reed are equal, the middle section of the elastic reed is lower than the two ends and forms a certain included angle with the two ends respectively, and the second connecting inserting sheet is provided with an installing hole for installing the elastic reed. The first connecting plug sheet is electrically connected with the second connecting plug sheet through the middle reed, and the middle reed is separated from the first connecting plug sheet until reaching the position sheet under the thrust action of the driving rod. In this in-process, the one end that the elasticity reed is close to the movable contact follows the middle reed and removes together, and the one end that the inserted sheet was connected at the second is installed to the elasticity reed motionless for the one end that the elasticity reed is close to the movable contact receives the extrusion and forms a reverse effort, and the thrust effect that no longer receives the actuating lever makes when the middle reed, and this reverse effort makes the middle reed reply with first connection inserted sheet lapped position. The base is used as the mounting seat of the contact switch mechanism, so that the number of product parts and required dies is reduced, the product volume is reduced, and the development cost is reduced.

Compared with the prior art, the utility model has the following beneficial effects: the driving rod transversely rotates under the action of the thrust of the push rod assembly to further push the contact switch mechanism to act, so that the driving rod does not need to move along the moving direction of the push rod assembly, the space required by the internal switch action of a product is saved, and the height of the product is reduced; the base is used as the mounting seat of the contact switch mechanism, so that the number of product parts and required dies is reduced, the product volume is reduced, and the development cost is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic illustration of the explosive structure of the present invention 1;

FIG. 3 is a schematic illustration of the explosive structure of the present invention 2;

FIG. 4 is a schematic illustration of the explosive structure of the present invention 3;

FIG. 5 is a schematic illustration of the explosive structure of the present invention 4;

FIG. 6 is a top view of the present invention;

FIG. 7 is a cross-sectional view of the AA plane of FIG. 6;

FIG. 8 is a schematic view of the drive rod;

FIG. 9 is a schematic structural view of the push rod;

fig. 10 is a schematic structural view of the contact switch mechanism.

The mark in the figure is: 1. an upper cover; 2. a lower cover; 3. a membrane; 4. pressing a plate; 5. a through hole; 6. a push rod; 7. a base ram segment; 8. a guide push rod section; 9. a guide block; 10. a guide groove; 11. a diaphragm receiving chamber; 12. a fluid channel; 13. a guide chamber; 14. an adjusting screw; 15. a spring; 16. a drive rod; 17. a rotating shaft; 18. a first drive section; 19. a second drive section; 20. a third drive section; 21. a fourth drive section; 22. a drive block; 23. a guide hole; 24. a groove; 25. a first inclined plane; 26. a second inclined plane; 27. a first connecting tab; 28. a second connecting insert; 29. a middle reed; 30. a movable contact; 31. a stationary contact; 32. an arrival chip; 33. a through groove; 34. mounting holes; 35. a baffle plate; 36. an elastic reed; 37. a middle push rod section; 38. a first pressure lever; 39. a second pressure lever.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings to which:

example 1

As shown in fig. 1 to 10, the novel single-contact water pressure switch comprises a seat body, wherein the seat body comprises an upper cover 1 and a lower cover 2, and a water pressure detection mechanism and a contact switch mechanism are arranged in the seat body. The lower cover 2 is provided with a membrane accommodating cavity 11 with an opening facing the upper cover 1, and a fluid channel 12 communicated with the lower cover 2 is arranged in the middle of the membrane accommodating cavity 11. Install diaphragm 3 in the diaphragm holds chamber 11, the diaphragm 3 top is equipped with clamp plate 4, and the centre of clamp plate 4 is equipped with through-hole 5, and the top of clamp plate 4 is equipped with push rod 6, and the bottom of push rod 6 passes through the up end contact of through-hole 5 and diaphragm 3. The push rod 6 comprises a basic push rod section 7, a middle push rod section 37 and a guide push rod section 8, the diameters of the basic push rod section 7, the middle push rod section 37 and the guide push rod section 8 are sequentially reduced, the push rod section close to the end of the diaphragm 3 is the basic push rod section 7, two guide blocks 9 are uniformly arranged on the outer side wall of the basic push rod section 7, and a guide groove 10 which is used for accommodating the guide blocks 9 and corresponds to the number of the guide blocks 9 is uniformly formed in the pressing plate 4. Be equipped with the direction chamber 13 that holds push rod 6 on the upper cover 1, the top in direction chamber 13 is equipped with adjusting screw 14, and adjusting screw 14's double-screw bolt section is equipped with guiding hole 23, and the push rod section that is close to adjusting screw 14 is direction push rod section 8, and the diameter of direction push rod section 8 is less than the internal diameter of guiding hole 23, a pot head of spring 15 is established on this adjusting screw 14's screw section, and the diameter of spring 15 is less than the diameter of basic push rod section 7. The push rod 6 is provided with a groove 24 from the middle push rod section 37 to the end of the basic push rod section 7, the bottom end of the groove 24 is provided with a first inclined surface 25 inclining downwards to the outer surface of the basic push rod section 7, a driving block 22 is arranged on a moving path of the push rod 6, the driving block 22 faces the groove 24, the driving block 22 is further provided with a second inclined surface 26 corresponding to the first inclined surface 25, when the push rod 6 moves, the first inclined surface 25 contacts the second inclined surface 26 to further push the driving block 22 to move, the driving block 22 is fixedly connected to the circular arc-shaped second driving section 19, and the diameter of the second driving section 19 is larger than or equal to that of the basic push rod section 7. The second drive section 19 is prevented from falling on the path of movement of the basic pusher section 7. The left side and the right side of the second driving section 19 are fixedly connected with a first driving section 18 and a third driving section 20 respectively, the first driving section 18 is fixedly connected on the rotating shaft 17, one end of the third driving section 20 far away from the second driving section 19 is fixedly connected with a fourth driving section 21, and the driving block 22, the rotating shaft 17, the first driving section 18, the second driving section 19, the third driving section 20 and the fourth driving section 21 form a driving rod 16. The rotating shaft 17 is rotatably installed between the upper cover 1 and the lower cover 2, when the push rod 6 moves, the push rod 6 touches the driving block 22, the driving block 22 cannot move along the moving direction of the push rod 6, the push rod 6 can only push the driving block 22 open, the driving rod 16 rotates around the rotating shaft 17, and the end part of the fourth driving section 21, which is far away from the third driving section 20, can push the contact 30 to actuate the switch mechanism. The upper cover 1 is provided with a blocking piece 35 for blocking the second driving section 19 from moving continuously on the moving track of the second driving section 19. The presence of flap 35 defines the maximum distance that drive rod 16 can rotate. The upper cover 1 is further provided with a first pressure lever 38 and a second pressure lever 39 which are higher than the blocking piece, the blocking piece 35, the first pressure lever 38 and the second pressure lever 39 are arranged around the guide cavity 13 in a circle, and after the upper cover 1 is installed on the lower cover 2, the blocking piece 35, the first pressure lever 38 and the second pressure lever 39 just press the pressure plate 4, so that the pressure plate 4 cannot move due to deformation of the membrane 3. The contact switch mechanism comprises a first connecting inserting sheet 27 and a second connecting inserting sheet 28, one end of the first connecting inserting sheet 27 is fixedly arranged in the seat body, the other end of the first connecting inserting sheet extends out of the seat body, an intermediate reed 29 arranged in parallel with the first connecting inserting sheet 27 is lapped over the first connecting inserting sheet 27, one end of the intermediate reed 29 is lapped over the end, close to the intermediate reed 29, of the first connecting inserting sheet 27, the other end of the intermediate reed 29 is lapped over the end, close to the intermediate reed 29, of the fourth driving section 21, a movable contact 30 is arranged at the contact part of the intermediate reed 29 and the first connecting inserting sheet 27, a fixed contact 31 in corresponding contact with the movable contact 30 is arranged on the first connecting inserting sheet 27, the fourth driving section 21 pushes the intermediate reed 29 to move away from the first connecting inserting sheet 27, a positioning sheet 32 parallel to the intermediate reed 29 is arranged on the moving path of the intermediate reed 29, a through groove 33 is arranged in the middle of the intermediate reed 29, the through groove 33 is internally provided with an elastic spring piece 36, one end of the elastic spring piece 36 is lapped on one end of the middle spring piece 29 provided with the movable contact 30, the other end of the elastic spring piece 36 is arranged on the second connecting insertion piece 28, the heights of the two ends of the elastic spring piece 36 are equal, the middle section of the elastic spring piece 36 is lower than the two ends and forms a certain included angle with the two ends respectively, and the second connecting insertion piece 28 is provided with a mounting hole 34 for mounting the elastic spring piece 36. The first connecting insertion piece 27 is electrically connected to the second connecting insertion piece 28 through the intermediate spring 29, and when the intermediate spring 29 is pushed by the driving lever 16, the intermediate spring 29 is separated from the first connecting insertion piece 27 to the positioning piece 32. In this process, the end of the spring strip 36 close to the movable contact 30 moves together with the intermediate strip 29, and the spring strip 36 is fixed to the end of the second connecting tab 28, so that the end of the spring strip 36 close to the movable contact 30 is pressed to form a reverse acting force, and when the intermediate strip 29 is no longer pushed by the driving rod 16, the reverse acting force returns the intermediate strip 29 to a position overlapping the first connecting tab 27.

When water flows into the fluid channel 12, the diaphragm 3 deforms under the action of pressure, the push rod 6 is pushed to move by the deformation, the drive rod 16 is pushed to rotate by the movement of the push rod 6 around the rotating shaft 17, when the water pressure reaches a set threshold value, the movable contact 30 and the fixed contact 31 of the contact switch mechanism are separated, the first connecting plug 27 and the second connecting plug 28 are disconnected, when the water pressure drops to a certain threshold value, the movable contact 30 and the fixed contact 31 are contacted again, and the first connecting plug 27 and the second connecting plug 28 are electrically connected.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a novel single contact water pressure switch, includes the pedestal, the pedestal includes upper cover (1) and lower cover (2), its characterized in that, be equipped with water pressure detection mechanism and contact switching mechanism in the pedestal, water pressure detection mechanism includes push rod assembly and the actuating lever (16) that promote the action of contact switching mechanism that remove between upper cover (1) and lower cover (2), and actuating lever (16) set up on the route that push rod assembly reciprocated.

2. The novel single-contact water pressure switch as claimed in claim 1, wherein the push rod assembly comprises a diaphragm (3), a pressure plate (4) is arranged above the diaphragm (3), a through hole (5) is formed in the middle of the pressure plate (4), a push rod (6) is arranged above the pressure plate (4), and the bottom end of the push rod (6) passes through the through hole (5) and contacts with the upper end face of the diaphragm (3).

3. A new single-contact water pressure switch according to claim 2, characterized in that the diameters of said membrane (3) and pressure plate (4) are equal.

4. The novel single-contact water pressure switch as claimed in claim 2, wherein the push rod (6) comprises at least two sections of push rod sections with successively smaller diameters, the push rod section close to the diaphragm (3) end is a basic push rod section (7), the diameter of the basic push rod section (7) is the largest, at least two guide blocks (9) are uniformly arranged on the outer side wall of the basic push rod section (7), and guide grooves (10) which correspond to the guide blocks (9) in number and accommodate the guide blocks (9) to pass through are uniformly arranged on the pressure plate (4).

5. The novel single-contact water pressure switch as claimed in claim 1, wherein the lower cover (2) is provided with a diaphragm accommodating cavity (11) with an opening facing the upper cover (1), and a fluid passage (12) communicated with the lower cover (2) is arranged in the middle of the diaphragm accommodating cavity (11); be equipped with direction chamber (13) that hold push rod (6) on upper cover (1), the top in direction chamber (13) is equipped with adjusting screw (14), is equipped with spring (15) between adjusting screw (14) and push rod (6).

6. The novel single-contact water pressure switch as claimed in claim 1, wherein the driving rod (16) comprises a rotating shaft (17) rotatably mounted between the upper cover (1) and the lower cover (2), a first driving section (18), a second driving section (19) and a third driving section (20) are fixedly connected to the rotating shaft (17) in sequence, the second driving section (19) is arc-shaped, a driving block (22) is fixedly connected to the side surface of the middle of the second driving section (19) facing the push rod (6), the driving block (22) is located on the moving path of the push rod (6), and a fourth driving section (21) facing the contact switch mechanism is fixedly connected to the end part of the reverse second driving section (19) of the third driving section (20).

7. The novel single-contact water pressure switch as claimed in claim 6, characterized in that the diameter of the second driving section (19) is greater than or equal to the diameter of the basic push rod section (7).

8. The novel single-contact water pressure switch as claimed in claim 5, wherein the stud section of the adjusting screw (14) is provided with a guide hole (23), the push rod section close to the adjusting screw (14) is a guide push rod section (8), the diameter of the guide push rod section (8) is smaller than the inner diameter of the guide hole (23), one end of the spring (15) is sleeved on the stud section of the adjusting screw (14), and the diameter of the spring (15) is smaller than that of the basic push rod section (7).

9. The novel single-contact water pressure switch as claimed in claim 1, wherein a groove (24) is formed in a portion, facing the driving block (22), of the push rod section (6) except the guide push rod section (8), the groove (24) extends to the base push rod section (7), a first inclined surface (25) inclining downwards towards the outer surface of the base push rod section (7) is arranged at the bottom end of the groove (24), and a second inclined surface (26) matched with the first inclined surface (25) is arranged on a corresponding surface, facing the first inclined surface (25), of the driving block (22).

10. The novel single-contact water pressure switch as claimed in claim 1, wherein the contact switch mechanism comprises a first connecting insertion sheet (27) and a second connecting insertion sheet (28) having one end fixedly installed in the housing and the other end extending out of the housing, an intermediate reed (29) arranged in parallel with the first connecting insertion sheet (27) is overlapped directly above the first connecting insertion sheet (27), one end of the intermediate reed (29) is overlapped above the end of the first connecting insertion sheet (27) close to the intermediate reed (29), the other end of the intermediate reed (29) is overlapped on the end of the fourth driving section (21) close to the intermediate reed (29), a movable contact (30) is arranged on the contact part of the intermediate reed (29) and the first connecting insertion sheet (27), a fixed contact (31) correspondingly contacted with the movable contact (30) is arranged on the first connecting insertion sheet (27), and the fourth driving section (21) pushes the intermediate reed (29) to move away from the first connecting insertion sheet (27), be equipped with the arrival piece (32) that is on a parallel with middle reed (29) on the moving path of middle reed (29), the centre of middle reed (29) is equipped with logical groove (33), be equipped with elasticity reed (36) in logical groove (33), the one end overlap joint of elasticity reed (36) is equipped with the one end of movable contact (30) in middle reed (29), the other end of elasticity reed (36) is installed on second connection inserted sheet (28), the both ends height of elasticity reed (36) equals, the interlude of elasticity reed (36) is less than both ends and respectively and becomes certain contained angle with both ends, be equipped with mounting hole (34) of installation elasticity reed (36) on second connection inserted sheet (28).