CN219536047U - Non-contact compact potentiometer signal switch - Google Patents
Non-contact compact potentiometer signal switch Download PDFInfo
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- CN219536047U CN219536047U CN202320374434.2U CN202320374434U CN219536047U CN 219536047 U CN219536047 U CN 219536047U CN 202320374434 U CN202320374434 U CN 202320374434U CN 219536047 U CN219536047 U CN 219536047U
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- magnetic steel
- sliding block
- circuit board
- slider
- sliding
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Abstract
The utility model discloses a non-contact compact potentiometer signal switch which comprises a shell, a circuit board, a linear Hall element, a speed regulating push rod, a sliding block support, a magnetic steel sliding block and the like, wherein the linear Hall element is fixed on the circuit board opposite to the magnetic steel sliding block in a soldering way and is opposite to the magnetic steel sliding block in position, the magnetic steel sliding block is arranged in a sliding groove on the sliding block support and forms linear reciprocating sliding, and the top surface of the magnetic steel sliding block is flush with or lower than the top surface of the sliding block support. Therefore, the appearance of the improved circuit board can be lighter and thinner, more limited installation space in the shell can not be occupied, the structural design is more compact, the influence on the position layout and function realization of other components in the shell is avoided, and great convenience is brought to production and assembly; meanwhile, the volume structure of the potentiometer signal switch is not large, the appearance design is convenient, the potentiometer signal switch is applied to related electric tool products, and the production cost is reduced.
Description
Technical Field
The utility model relates to a potentiometer signal output switch, in particular to a non-contact compact potentiometer signal switch applied to an electric tool for adjusting the rotation speed and the power of a motor on a brushless control module.
Background
The existing non-contact potentiometer signal switch is similar to the structure of the published Chinese patent No. 20202296328.9, namely a speed regulating switch, and is characterized in that a speed regulating push rod is used for driving synchronous linear reciprocating movement of N-pole magnetic steel and S-pole magnetic steel on the speed regulating switch, so that a change position is generated relative to a linear Hall element fixed on a circuit board by soldering and Hall voltage signals are output, the change position of the relative movement is not in a relative same straight line, and the relative movement is not in position change, and in addition, some assembly gaps exist in a shell of the circuit board, so that the use defects of high installation requirement, easiness in influencing the output rotating speed and the stability and consistency of power of a motor, and indirectly reducing the performance of a product and the like often exist in the practical use.
Therefore, manufacturers push out a structure additionally provided with a sliding support and a magnetic steel sliding block, and specifically, the sliding support is positioned and installed on a circuit board, the magnetic steel sliding block is linearly and reciprocally installed on the sliding support and is driven by a speed regulating push rod which linearly and reciprocally moves, and N-pole magnetic steel and S-pole magnetic steel are respectively arranged at two ends of the magnetic steel sliding block; obviously, because the improved N-pole magnetic steel and the improved S-pole magnetic steel are integrally positioned and installed with the circuit board by means of the magnetic steel sliding block and the sliding block support, namely, the linear reciprocating movement of the N-pole magnetic steel and the S-pole magnetic steel relative to the linear Hall element can be ensured only along with the linear reciprocating sliding of the magnetic steel sliding block on the sliding block support, and the speed regulating push rod only bears the linear reciprocating sliding of the driving magnetic steel sliding block on the sliding block support, the installation difficulty and the installation requirement of the circuit board and the speed regulating push rod in the shell can be greatly reduced, the linear reciprocating movement of the N-pole magnetic steel and the S-pole magnetic steel relative to the linear Hall element can be effectively ensured to always be in relative same straight line for position change, so that the influence on the stability and consistency of the output rotating speed and power of a motor is avoided, and the product performance is better promoted.
However, the improved structure has the defects of structural design, in particular, because the linear Hall element is arranged on the circuit board on the same surface as the magnetic steel sliding block, and the linear Hall element is arranged in the sliding block support and is positioned right below the magnetic steel sliding block, so that the top surface of the magnetic steel sliding block is higher than the top surface of the sliding block support, the linear Hall element cannot be collided in the linear reciprocating sliding process, the thickness of the circuit board is large, more limited installation space in the shell is occupied, the position layout and the function realization of other components in the shell are influenced, great inconvenience is brought to the production and assembly, the volume structure of the potentiometer signal switch is huge, the appearance design is not facilitated, and the application in related electric tool products is also improved.
Disclosure of Invention
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide the non-contact compact potentiometer signal switch which has the advantages of compact structure, small volume, simple assembly and low production cost.
The technical problems of the utility model are realized by the following technical scheme:
the utility model provides a non-contact compact potentiometer signal switch, includes the shell, seals the circuit board of fixing in the shell and inserting the circuit, the linear hall element of soldering fixed on the circuit board, the slider support of location installation on the circuit board, the linear reciprocating sliding installation on the slider support and the speed governing push rod of linear reciprocating motion and drive magnet steel slider, the both ends of this magnet steel slider are equipped with N pole magnet steel and S pole magnet steel respectively, linear hall element set up with the magnet steel slider on the circuit board of opposite side, and just right with the position of magnet steel slider, the magnet steel slider in form linear reciprocating sliding in the spout on the slider support, the top surface of this magnet steel slider flushes or is less than the top surface of slider support.
The magnetic steel sliding block is assembled in the guide ribs on the two side walls of the sliding groove through the guide grooves respectively arranged on the two sides to form linear reciprocating sliding.
The sliding chute is a linear closed chute with two closed ends, the chute walls at two sides of the sliding chute are elastic chute walls, the two elastic chute walls are outwards elastically opened to be filled with the magnetic steel sliding block, and the guide ribs for driving the two side walls of the sliding chute by automatic elastic reset of the two elastic chute walls are assembled in the guide grooves at two sides of the magnetic steel sliding block, so that the magnetic steel sliding block can linearly and reciprocally slide in the sliding chute.
The guide groove is a straight line penetrating groove extending and penetrating along the axial direction of the magnetic steel sliding block.
The sliding block support is provided with a positioning column and a positioning buckle, a positioning hole and a positioning clamping groove are correspondingly formed in the circuit board, the sliding block support is positioned and assembled in the positioning hole on the circuit board through the positioning column, and then the positioning buckle is detachably buckled and installed in the positioning clamping groove on the circuit board to form fixation.
The two ends of the sliding block support are respectively provided with a positioning buckle, and the positioning buckles at the two ends are respectively arranged at the two ends of the sliding groove and form a seal.
The linear reciprocating movement axial lead of the speed regulating push rod is parallel to the linear reciprocating movement axial lead of the magnetic steel slide block; the connecting line between the N-pole magnetic steel and the S-pole magnetic steel is also parallel to the linear reciprocating sliding axis of the magnetic steel sliding block.
Compared with the prior art, the linear Hall element is fixed on the circuit board on the surface opposite to the magnetic steel sliding block in a soldering way, the linear Hall element is opposite to the magnetic steel sliding block, the magnetic steel sliding block is arranged in a sliding groove on the sliding block support and forms linear reciprocating sliding, and the top surface of the magnetic steel sliding block is flush with or lower than the top surface of the sliding block support. Obviously, the appearance of the improved circuit board can be lighter and thinner, more limited installation space in the shell can not be occupied, the structural design is more compact, the influence on the position layout and function realization of other components in the shell is avoided, and great convenience is brought to production and assembly; meanwhile, the volume structure of the potentiometer signal switch is not caused, the appearance design is convenient, the potentiometer signal switch is applied to related electric tool products, and the production cost is further reduced.
Drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is a perspective view of fig. 1.
Fig. 3 is an exploded perspective view of fig. 2.
Fig. 4 is a schematic diagram (top schematic diagram) of the installation structure of the magnetic steel slider and the slider bracket on the circuit board.
Fig. 5 is an exploded perspective view of fig. 4.
Fig. 6 is a schematic view (schematic bottom view) of the installation structure of the magnetic steel slider and the slider bracket on the circuit board.
Fig. 7 is an exploded perspective view of fig. 6.
Fig. 8 is a cross-sectional view of a slider bracket positioned for mounting on a circuit board.
Fig. 9 is a cross-sectional view of the slider bracket.
Fig. 10 is a perspective view (bottom schematic view) of the slider bracket.
Fig. 11 is a perspective view (schematic top view) of a magnetic steel slider.
Fig. 12 is a perspective view (schematic bottom view) of a magnetic steel slider.
Fig. 13 is a schematic view of a structure of the governor pushrod.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the drawings.
1-13, 1, 11, base, 12, cover plate, 2, governor rod, 21, button, 22, connecting post, 3, circuit board, 31, linear Hall element, 32, locating hole, 33, locating slot, 4, sliding bracket, 41, chute, 411, elastic slot wall, 42, guide rib, 43, locating post, 44, locating buckle, 5, magnetic steel slider, 51, guide slot, 52, connecting hole, 53, magnetic steel locating slot, 54, pressure change fixing protrusion, 6, N pole magnetic steel, 7, S pole magnetic steel, 8, reset spring.
A non-contact compact potentiometer signal switch, as shown in figure 1-figure 3, relates to a potentiometer signal output switch, in particular to a potentiometer signal switch applied to an electric tool for adjusting motor rotation speed and power on a brushless control module, which is mainly composed of a shell 1, a circuit board 3 sealed and fixed in the shell and connected with a circuit, a linear Hall element 31 fixed on the circuit board in a soldering manner, a slide block bracket 4 positioned and mounted on the circuit board, a magnetic steel slide block 5 linearly and reciprocally mounted on the slide block bracket, a speed regulating push rod 2 linearly and reciprocally moving and driving the magnetic steel slide block, and the like, wherein both ends of the magnetic steel slide block 5 are respectively provided with N-pole magnetic steel 6 and S-pole magnetic steel 7.
The shell 1 is a hollow shell structure formed by a base 11 and a cover plate 12 which is covered and fixed on the base, and the circuit board 3 is fixed on the inner end surface of the cover plate 12; the speed regulating push rod 2 is arranged in the base 11 in a linear reciprocating manner, specifically, a guide hole is formed in one side of the base, one end of the speed regulating push rod 2 penetrates through the guide hole and stretches into the shell 1, a reset spring 8 is further arranged at one end of the speed regulating push rod stretching into the shell, the speed regulating push rod 2 can be elastically pushed to linearly move outwards by the reset spring, the other end of the speed regulating push rod 2 penetrates through the guide hole and stretches out of the shell 1, a button 21 is arranged, external force acts on the other end of the speed regulating push rod 2 by pressing the button 21, and the linear inward movement of the speed regulating push rod 2 can be pushed by overcoming the pushing elastic force of the reset spring 8, so that the speed regulating push rod 2 can linearly reciprocate relative to the circuit board 3 in the shell 1.
The sliding block support 4 is provided with a positioning column 43 and a positioning buckle 44, in the embodiment, two positioning columns 43 and two positioning buckles 44 are designed, the two positioning columns 43 are respectively positioned at two sides of the middle part of the bottom surface of the sliding block support 4, and the two positioning buckles 44 are respectively arranged at two ends of the bottom surface of the sliding block support 4; the circuit board 3 is correspondingly provided with positioning holes 32 and positioning clamping grooves 33, the number and positions of which correspond to the positioning columns 43 and the positioning buckles 44; therefore, the slider bracket 4 is positioned and assembled in the two positioning holes 32 on the circuit board 3 through the two positioning posts 43, and then the two positioning buckles 44 are detachably buckled and installed in the two positioning clamping grooves 33 on the circuit board 3 to form fixation, so that the magnetic steel slider 5 can be ensured not to have position change or loosening when sliding linearly and reciprocally on the slider bracket 4.
The magnetic steel slide block 5 slides linearly and reciprocally on the slide block support 4, a chute 41 is arranged on the slide block support 4, the chute is a closed linear closed slot just formed by positioning buckles 44 at two ends, the two side slot walls of the chute are elastic slot walls 411, semicircular guide ribs 42 extending along the axial direction are respectively arranged on the opposite surfaces of the two elastic slot walls 411, the two sides of the magnetic steel slide block 5 are correspondingly provided with guide slots 51 respectively, the guide slots are semicircular straight-line through slots extending and penetrating along the axial direction of the magnetic steel slide block 5, the magnetic steel slide block 5 can be assembled when the two elastic slot walls 411 are outwards elastically opened, the guide ribs 42 on two side walls of the chute 41 are driven by automatic elastic reset of the two elastic slot walls 411 to be assembled in the guide slots 51 on two sides of the magnetic steel slide block 5, the magnetic steel slide block 5 can form linear reciprocating sliding in the chute 41, the straightness of the movement track of the magnetic steel slide block 5 can be effectively ensured, and the linear reciprocating sliding axial lead of the magnetic steel slide block 5 is just parallel to the linear reciprocating axial lead of the speed regulating push rod 2.
The two ends of the top surface of the magnetic steel sliding block 5 are respectively provided with a magnetic steel positioning groove 53, two sides of each magnetic steel positioning groove are respectively provided with a pressure change fixing protrusion 54, after the magnetic steel positioning grooves 53 at the two ends are respectively embedded with the N-pole magnetic steel 6 and the S-pole magnetic steel 7, the N-pole magnetic steel 6 and the S-pole magnetic steel 7 can be fixed in the respective magnetic steel positioning grooves 53 only through the hot press deformation of the pressure change fixing protrusions 54, and the connecting line between the N-pole magnetic steel 6 and the S-pole magnetic steel 7 is also parallel to the linear reciprocating sliding axial lead of the magnetic steel sliding block 5.
The linear hall element 31 is disposed on the circuit board 3 opposite to the magnetic steel slider 5 and is opposite to the magnetic steel slider 5, so that the linear hall element is disposed in the sliding groove of the slider bracket and forms a magnetic steel slider 5 that slides linearly and reciprocally, and the top surface of the linear hall element can be designed to be flush with the top surface of the slider bracket 4 or lower than the top surface of the slider bracket 4.
Therefore, the appearance of the circuit board 3 can be made to be lighter and thinner, and the magnetic steel sliding block 5 can not collide with the linear Hall element 31 in the process of linearly and reciprocally sliding in the sliding groove 41, so that the improved circuit board 3 can not occupy more limited installation space in the shell 1, the structural design is more compact, the influence on the position layout and function realization of other components in the shell 1 is avoided, and great convenience is brought to production and assembly; meanwhile, the volume structure of the potentiometer signal switch is not caused, the appearance design is convenient, the potentiometer signal switch is applied to related electric tool products, and the production cost is further reduced.
One end of the speed regulating push rod 2 extending into the shell 1 is movably assembled in a connecting hole 52 of the magnetic steel sliding block 5 through a connecting column 22, and the connecting hole is positioned on a connecting line between the N-pole magnetic steel 6 and the S-pole magnetic steel 7.
Therefore, when the speed regulating push rod 2 forms linear reciprocating movement through the pressing external force on the push button 21 and the elastic pushing force of the reset spring 8, the magnetic steel slide block 5 can be driven to form synchronous linear reciprocating sliding on the slide block support 4, and further the N-pole magnetic steel 6 and the S-pole magnetic steel 7 are driven to form linear reciprocating movement relative to the linear Hall element 31, so that the linear Hall element 31 can sense the magnetic field intensity passing through the space between the N-pole magnetic steel 6 and the S-pole magnetic steel 7 to output corresponding Hall voltage, and then a voltage signal is transmitted to a microprocessor of a chip circuit on a circuit board, and the aim of controlling the rotation speed and the power of a motor can be achieved.
In addition, the integrated design structure of the magnetic steel sliding block 5, the sliding block support 4 and the circuit board 3 can greatly reduce the installation difficulty and the installation requirement of the circuit board 3 and the speed regulating push rod 2 in the shell 1, and can effectively ensure that the linear reciprocating movement of the N-pole magnetic steel 6 and the S-pole magnetic steel 7 relative to the linear Hall element 31 is always in relative same straight line for position change, so that the stability and the consistency of the output rotating speed and the power of the motor are prevented from being influenced, and the product performance is also better improved.
The foregoing is merely a specific embodiment of the present utility model, and it should be understood by those skilled in the art that any structural design equivalent to the embodiment is included in the scope of the present utility model.
Claims (7)
1. The utility model provides a non-contact compact potentiometer signal switch, includes shell (1), seals circuit board (3) of fixing in the shell and inserting the circuit, soldering fix linear hall element (31) on the circuit board, slider support (4) of location installation on the circuit board, the speed governing push rod (2) of straight reciprocating motion and drive magnet steel slider (5) of straight reciprocating sliding installation on slider support, the both ends of this magnet steel slider (5) are equipped with N utmost point magnet steel (6) and S utmost point magnet steel (7) respectively, its characterized in that linear hall element (31) set up with magnet steel slider (5) are on circuit board (3) of opposite side, and with the position of magnet steel slider (5) is just right, magnet steel slider (5) in slider support (4) in spout (41) and form straight reciprocating sliding, the top surface of this magnet steel slider (5) flushes or is less than the top surface of slider support (4) with the top surface of slider support (4).
2. The signal switch of a non-contact compact potentiometer according to claim 1, wherein the magnetic steel sliding block (5) is assembled in the guide ribs (42) on the two side walls of the sliding groove (41) through the guide grooves (51) on the two sides respectively to form linear reciprocating sliding.
3. The signal switch of a non-contact compact potentiometer according to claim 2, wherein the sliding chute (41) is a linear closed chute with two closed ends, the two chute walls of the sliding chute (41) are elastic chute walls (411), the two elastic chute walls are outwards elastically opened to be filled into the magnetic steel sliding block (5), and the guide ribs (42) of the two side walls of the sliding chute (41) are driven by automatic elastic reset of the two elastic chute walls (411) to be assembled in the guide grooves (51) on the two sides of the magnetic steel sliding block (5), so that the magnetic steel sliding block (5) forms linear reciprocating sliding in the sliding chute (41).
4. A non-contact compact potentiometer signal switch as in claim 2 wherein the guide slot (51) is a straight through slot extending through the magnetic steel slider (5) in the axial direction.
5. The non-contact compact potentiometer signal switch according to claim 1, wherein the sliding block support (4) is provided with a positioning column (43) and a positioning buckle (44), the circuit board (3) is correspondingly provided with a positioning hole (32) and a positioning clamping groove (33), the sliding block support (4) is positioned and assembled in the positioning hole (32) on the circuit board (3) through the positioning column (43), and then the positioning buckle (44) is detachably buckled and installed in the positioning clamping groove (33) on the circuit board (3) to form fixation.
6. The signal switch of a non-contact compact potentiometer according to claim 5, wherein the two ends of the slider bracket (4) are respectively provided with a positioning buckle (44), and the positioning buckles at the two ends are respectively arranged at the two ends of the chute (41) and form a seal.
7. The non-contact compact potentiometer signal switch according to claim 1, wherein the linear reciprocating axis of the speed regulating push rod (2) is parallel to the linear reciprocating axis of the magnetic steel slide block (5); the connecting line between the N-pole magnetic steel (6) and the S-pole magnetic steel (7) is also parallel to the linear reciprocating sliding axis of the magnetic steel sliding block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320374434.2U CN219536047U (en) | 2023-03-03 | 2023-03-03 | Non-contact compact potentiometer signal switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320374434.2U CN219536047U (en) | 2023-03-03 | 2023-03-03 | Non-contact compact potentiometer signal switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219536047U true CN219536047U (en) | 2023-08-15 |
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ID=87626522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320374434.2U Active CN219536047U (en) | 2023-03-03 | 2023-03-03 | Non-contact compact potentiometer signal switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219536047U (en) |
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2023
- 2023-03-03 CN CN202320374434.2U patent/CN219536047U/en active Active
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