CN219738664U

CN219738664U - Automatic return potentiometer rotary switch

Info

Publication number: CN219738664U
Application number: CN202320888145.4U
Authority: CN
Inventors: 张欢; 耿江涛; 杨强
Original assignee: Durui Industrial Components Beijing Co ltd
Current assignee: Durui Industrial Components Beijing Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-09-22
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses an automatic return potentiometer rotary switch, which relates to the technical field of potentiometers and comprises a PCB (printed circuit board), a potentiometer, a rotary component and a return component, wherein the potentiometer is arranged on one side of the PCB, and the rotary component penetrates through the PCB and extends from one side of the PCB, which is close to the potentiometer, to the other side of the PCB. The return assembly is arranged on one side of the PCB, far away from the potentiometer, and comprises a limit column and a connecting piece, wherein the limit column is arranged on one side of the end part of the rotating assembly along the vertical direction, one end of the connecting piece is connected with the end part of the rotating assembly, and the other end of the connecting piece is connected with the limit column; when the rotating assembly rotates, the limiting column and the connecting piece can drive the rotating assembly to return. The rotary switch can automatically return the potentiometer after rotating for a certain angle.

Description

Automatic return potentiometer rotary switch

Technical Field

The utility model relates to the technical field of potentiometers, in particular to an automatic return potentiometer rotary switch.

Background

The potentiometer is a kind of sensor, the potentiometer is a resistance element with three leading-out ends and the resistance value can be regulated according to a certain change rule, the potentiometer is usually composed of a resistor body and a movable electric brush, when the electric brush moves along the resistor body, the resistance or voltage which is in a certain relation with the displacement is obtained at the output end.

The potentiometer can be used in medical instruments, is connected with a singlechip of the instrument, and is used as a front-back page turning knob or an alarm setting 'increasing' or 'decreasing' knob of menu items, and the like. The potentiometer is connected with an operating handle, the potentiometer is slid or rotated, one knob corresponds to the functions of two keys of 'increasing' or 'decreasing', clockwise rotation means increasing, and anticlockwise rotation means decreasing.

In some medical instrument use scenarios, the potentiometer needs to be returned after the operating handle is rotated to rotate the potentiometer by a certain angle. In the related art, the potentiometer is required to be manually operated to complete return, so that the complicated operation degree is increased in the medical operation process, and the operation efficiency is lowered.

Disclosure of Invention

In order to enable the potentiometer to return automatically and simplify operation related operations, the utility model provides an automatic return potentiometer rotary switch.

The utility model provides an automatic return potentiometer rotary switch, which adopts the following technical scheme:

the automatic return potentiometer rotary switch comprises a PCB, a potentiometer, a rotary assembly and a return assembly, wherein the potentiometer is arranged on one side of the PCB, and the rotary assembly penetrates through the PCB and extends from one side of the PCB, which is close to the potentiometer, to the other side;

the potentiometer comprises a fixed block and a sliding block, the fixed block is fixedly connected with the PCB, the sliding block is embedded in the fixed block and is in sliding connection with the sliding block, and the rotating assembly is arranged in the sliding block in a penetrating way and can drive the sliding block to rotate;

the return assembly is arranged on one side of the PCB, far away from the potentiometer, and comprises a limit column and a connecting piece, wherein the limit column is arranged on one side of the end part of the rotating assembly along the vertical direction, one end of the connecting piece is connected with the end part of the rotating assembly, and the other end of the connecting piece is connected with the limit column; when the rotating assembly rotates, the limiting column and the connecting piece can drive the rotating assembly to return.

Through adopting above-mentioned technical scheme, when the drive rotating assembly rotated, rotating assembly drove the sliding block and rotated together, and the fixed block can respond to the rotation signal of sliding block to output corresponding output voltage. Meanwhile, the rotating assembly and the limiting column are integrally connected by the connecting piece, and the limiting column enables the rotating assembly to rotate. The rotation of the rotating assembly further drives the sliding block to rotate in the fixed block, so that the potentiometer returns. Therefore, under the action of external force, the potentiometer can automatically return after rotating for a certain angle, manual operation of operators is not needed, and the overall operation is simplified.

Optionally, the rotating assembly includes a first rotating member and a second rotating member, the first rotating member is located on one side of the PCB close to the potentiometer, the second rotating member is located on one side of the PCB away from the potentiometer, and the first rotating member penetrates through the PCB from one side of the PCB and is detachably connected with the second rotating member.

Through adopting above-mentioned technical scheme, first rotating member and second rotating member interval distribution just are located the both sides of PCB board respectively, rotate first rotating member to drive the rotation of second rotating member together. Since the first rotating member bottom end is spaced apart from the PCB board, friction and interference can be reduced.

Optionally, the connecting piece is elastic material, the one end of connecting piece with the second rotating member is connected, the other end with spacing post is connected.

By adopting the technical scheme, as the connecting piece is made of elastic materials, when the second rotating piece rotates, the connecting piece is stretched; when the operator releases his hands, the second rotating member is driven to return under the elastic action of the connecting member.

Optionally, the number of the spacing post is two, and two spacing posts set up respectively the first rotating member both sides, the connecting piece is around establishing on the first rotating member just the both ends of connecting piece respectively with two spacing post fixed connection.

By adopting the technical scheme, the two limiting columns can limit the rotating assembly along two directions of clockwise and anticlockwise. Specifically, when the first rotating member rotates along one direction, the connecting member is elastically stretched due to the limit of the limit post, and after the rotation is stopped, the first rotating member rotates under the elastic action of the connecting member.

Optionally, the first rotating member includes knob portion and connecting portion, and connecting portion connect in the one side that the knob portion is close to the PCB board, set up two along circumference distribution's change groove on the knob portion, two spacing post with two change the groove one-to-one setting, spacing post tip extends to corresponding change inslot.

Through adopting above-mentioned technical scheme, because spacing post tip extends to the change inslot, when turning knob portion, because the spacing effect of spacing post, consequently the rotation range of knob portion can be restricted, reduces the damage that the connecting piece excessively stretches to produce to protect the connecting piece.

Optionally, the annular has been seted up in the second rotating member, the inside and outside both sides of annular have first arch and second arch respectively, the bar hole has been seted up on the protruding lateral wall of second, the annular with the bar hole is linked together, the connecting piece is around establishing first protruding lateral wall department, just the connecting piece both ends pass respectively the bar hole and with correspond spacing post is connected.

Through adopting above-mentioned technical scheme, the connecting piece inlays to be established in the annular for the second rotating member is whole protects the connecting piece, improves the life of connecting piece. In addition, the strip-shaped holes are used for extending and sliding at two ends of the connecting piece, a certain sliding and yielding space is provided, and the abrasion degree between the connecting piece and the second rotating piece is reduced.

Optionally, each limit post is detachably connected with the PCB board.

Through adopting above-mentioned technical scheme, spacing post passes through fastener such as screw and is connected with the PCB board can be dismantled to make things convenient for the reutilization of PCB board.

Optionally, a plurality of anti-slip grooves are formed in the peripheral side wall of the knob part, and the anti-slip grooves are uniformly distributed at intervals along the circumferential direction.

Through adopting above-mentioned technical scheme, when actually rotating knob portion, the direct contact of operating personnel hand and anti-skidding groove part, anti-skidding groove provide certain frictional force to the operation is felt in the use has been improved.

Optionally, an arc groove is formed in the PCB, the arc groove is formed along the rotation direction of the second rotating member, and the limit post is slidably disposed in the arc groove;

elastic pieces are arranged at two ends in the arc-shaped groove, one end of each elastic piece is connected with the inner side wall of the arc-shaped groove, and the other end of each elastic piece is in butt joint with the connecting piece.

Through adopting above-mentioned technical scheme, the connecting piece is inelastic material, and when rotating the second rotating member, spacing post removes and extrudees the elastic component along arc groove length direction, and spacing post rebound under the effect of elastic component elasticity to drive the rotation of second rotating member.

In summary, the present utility model includes at least one of the following beneficial effects:

1. when the connecting piece is elastic, under the action of the elastic force of the connecting piece, the potentiometer can automatically return after rotating by a certain angle, and manual operation of an operator is not needed.

2. When the connecting piece is made of inelastic materials, the limiting column returns through the arc-shaped groove and the corresponding elastic piece, and then the rotating assembly is driven to return.

3. The first rotating member is used as a driving rotating member, and the bottom end of the first rotating member is separated from the PCB, so that friction and obstruction can be reduced.

4. The limiting column end extends into the rotary groove, when the knob part is rotated, the rotation range of the knob part can be limited due to the limiting effect of the limiting column, and damage caused by excessive stretching of the connecting piece is reduced, so that the connecting piece is protected.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a rotary switch for an automatic return potentiometer in embodiment 1 of the present utility model.

Fig. 2 is a sectional view of the rotary switch of the self-return potentiometer in embodiment 1 of the present utility model.

Fig. 3 is a schematic view of the structure of the self-return potentiometer rotary switch according to embodiment 1 of the present utility model when it is mounted in the operation handle.

Fig. 4 is a schematic diagram showing the overall structure of a rotary switch for an automatic return potentiometer according to embodiment 2 of the present utility model.

Reference numerals illustrate: 1. a PCB board; 11. an arc-shaped groove; 2. a potentiometer; 21. a fixed block; 22. a sliding block; 3. a rotating assembly; 31. a first rotating member; 311. a knob portion; 3111. an anti-skid groove; 3112. a rotary groove; 312. a connection part; 32. a second rotating member; 321. a ring groove; 322. a first protrusion; 323. a second protrusion; 3231. a bar-shaped hole; 4. a return assembly; 41. a connecting piece; 42. a limit column; 421. a buffer layer; 5. an operation handle; 51. a through groove; 6. an elastic member.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1 to 4.

Example 1

Referring to fig. 1, the automatic return potentiometer rotary switch disclosed by the embodiment of the utility model comprises a PCB board 1, a potentiometer 2, a rotary component 3 and a return component 4, wherein the potentiometer 2 is arranged on one side of the PCB board 1, and the rotary component 3 penetrates through the PCB board 1 and extends from one side of the PCB board 1 close to the potentiometer 2 to the other side. The return component 4 is arranged on one side of the PCB 1 far away from the potentiometer 2 and is used for driving the rotating component 3 to rotate.

Referring to fig. 2, the potentiometer 2 includes a fixed block 21 and a sliding block 22, the fixed block 21 is fixedly connected with the PCB board, the sliding block 22 is rotatably connected with the inner sidewall of the fixed block 21, and the sliding block 22 is fixedly connected with the outer sidewall of the first rotating member 31. When the first rotating member 31 rotates to drive the slider 22 to rotate, the contact on the upper surface of the slider 22 contacts the contact on the inner side wall of the fixed block 21, thereby outputting different output voltages.

Referring to fig. 2, the rotating assembly 3 includes a first rotating member 31 and a second rotating member 32, the first rotating member 31 is located at a side of the potentiometer 2 away from the PCB board 1, the second rotating member 32 is located at a side of the PCB board 1 away from the potentiometer 2, and the first rotating member 31 penetrates the PCB board 1 from the side of the PCB board 1 and is connected with the second rotating member 32.

Specifically, referring to fig. 2, the first rotary member 31 includes a knob portion 311 and a connection portion 312, and the connection portion 312 is connected to a side of the knob portion 311 near the PCB board 1 and extends into the second rotary member 32. The knob portion 311 is disc-shaped, and a plurality of anti-slip grooves 3111 are formed in the outer periphery of the knob portion 311, and the anti-slip grooves 3111 are uniformly distributed at intervals along the outer periphery of the knob portion 311. Further, a rotation groove 3112 is formed near the edge of the knob portion 311, and the rotation groove 3112 is formed along the circumferential direction of the knob portion 311. Specifically, the number of the rotating grooves 3112 is two, and the two rotating grooves 3112 are symmetrically disposed.

Referring to fig. 2, a ring groove 321 is formed in the second rotating member 32, a first protrusion 322 and a second protrusion 323 are respectively formed on the inner side and the outer side of the ring groove 321, a bar-shaped hole 3231 is formed on the outer side wall of the second protrusion 323, and the ring groove 321 is communicated with the bar-shaped hole 3231. The connection portion 312 of the first rotary member 31 extends into the first protrusion 322, and the connection portion 312 is detachably connected with the first protrusion 322 by a screw.

Referring to fig. 2, the return assembly 4 includes a connector 41 and two limiting posts 42, and specifically, two limiting posts 42 are disposed at both sides of the second rotating member 32 in a vertical direction, and each limiting post 42 is detachably connected with the PCB board 1 through a bolt. Meanwhile, the limiting post 42 is disposed corresponding to the rotating groove 3112, and an end portion of the limiting post 42 penetrates the PCB board 1 and extends into the rotating groove 3112, so that a rotation range of the knob portion 311 can be further limited.

Referring to fig. 2, the connecting member 41 is made of an elastic material, specifically, a torsion spring. The torsion spring is wound around the outer side wall of the first protrusion 322, two ends of the torsion spring respectively pass through the corresponding bar-shaped holes 3231 and are connected with the corresponding limiting posts 42, the connecting piece 41 is fixedly connected with the limiting posts 42 in the embodiment, and a clamping mode can be selected in other embodiments.

Meanwhile, referring to fig. 1, in order to reduce the wear degree of the connection member 41, a buffer layer 421 is provided at a contact area of the surface of the stopper post 42 and the connection member 41.

Further, referring to fig. 3, in actual use, the entire rotary switch is mounted in the operating handle 5 of the corresponding device, and the operating handle 5 is provided with a through groove 51 through which the knob portion 311 protrudes. Thereby facilitating the operation of the operator by holding the operating handle 5.

The implementation principle of the automatic return potentiometer rotary switch in the embodiment of the utility model is as follows: when the automatic return integrated structure is specifically used, the automatic return integrated structure is installed in the operating handle 5 of the corresponding equipment, when the output voltage needs to be regulated, the knob part 311 is rotated to a certain angle, the knob part 311 is loosened, and under the action of the elastic connecting piece 41, the knob part 311 drives the potentiometer 2 to return.

Example 2

Referring to fig. 4, the embodiment of the present utility model is different from embodiment 1 in that the connecting member 41 is made of an inelastic material, and the limiting post 42 is connected to the first protrusion 322 through the connecting member 41. An arc-shaped groove 11 is formed in the PCB 1, the arc-shaped groove 11 is formed along the rotation direction of the second rotating piece 32, and the limiting column 42 is in sliding connection with the inner wall of the arc-shaped groove 11. Simultaneously, both ends position all is provided with elastic component 6 in the spout, and every elastic component 6 one end is connected with the spout inside wall that corresponds, and the other end extends to spacing post 42 department and with spacing post 42 butt.

The implementation principle of the automatic return potentiometer rotary switch provided by the embodiment of the utility model is as follows: when the knob part 311 is not rotated, each elastic piece 6 is in a natural state, and when the knob part 311 is rotated, the limiting post 42 moves along the length direction of the arc-shaped groove 11 and compresses the corresponding elastic piece 6, and after the hand is loosened, the limiting post 42 returns under the action of the elastic force of the elastic piece 6.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. An automatic return potentiometer rotary switch is characterized in that: the potentiometer comprises a PCB (1), a potentiometer (2), a rotating assembly (3) and a return assembly (4), wherein the potentiometer (2) is installed on one side of the PCB (1), and the rotating assembly (3) penetrates through the PCB (1) and extends from one side, close to the potentiometer (2), of the PCB (1) to the other side;

the potentiometer (2) comprises a fixed block (21) and a sliding block (22), the fixed block (21) is fixedly connected with the PCB (1), the sliding block (22) is embedded in the fixed block (21) and is in sliding connection with the sliding block (22), and the rotating assembly (3) is arranged in the sliding block (22) in a penetrating way and can drive the sliding block (22) to rotate;

the return assembly (4) is arranged on one side, far away from the potentiometer (2), of the PCB (1), the return assembly (4) comprises a limit column (42) and a connecting piece (41), the limit column (42) is arranged on one side of the end part of the rotating assembly (3) along the vertical direction, one end of the connecting piece (41) is connected with the end part, far away from the rotating assembly (3), of the connecting piece, and the other end of the connecting piece is connected with the limit column (42);

when the rotating assembly (3) rotates, the limiting column (42) and the connecting piece (41) can drive the rotating assembly (3) to return.

2. The self-return potentiometer rotary switch of claim 1 wherein: the rotating assembly (3) comprises a first rotating part (31) and a second rotating part (32), the first rotating part (31) is located on one side, close to the potentiometer (2), of the PCB (1), the second rotating part (32) is located on one side, far away from the potentiometer (2), of the PCB (1), and the first rotating part (31) penetrates through the PCB (1) from one side of the PCB (1) and is detachably connected with the second rotating part (32).

3. The self-return potentiometer rotary switch of claim 2 wherein: the connecting piece (41) is made of elastic materials, one end of the connecting piece (41) is connected with the second rotating piece (32), and the other end of the connecting piece is connected with the limiting column (42).

4. The self-return potentiometer rotary switch of claim 2 wherein: the number of the limiting columns (42) is two, the two limiting columns (42) are respectively arranged on two sides of the first rotating piece (31), the connecting piece (41) is wound on the second rotating piece (32), and two ends of the connecting piece (41) are respectively fixedly connected with the two limiting columns (42).

5. The self-return potentiometer rotary switch of claim 4 wherein: the first rotating piece (31) comprises a knob portion (311) and a connecting portion (312), the connecting portion (312) is connected to one side, close to the PCB (1), of the knob portion (311), two arc-shaped grooves (11) distributed along the circumferential direction are formed in the knob portion (311), two limit columns (42) and two arc-shaped grooves (11) are arranged in a one-to-one correspondence mode, and the ends of the limit columns (42) extend into the corresponding arc-shaped grooves (11).

6. The self-return potentiometer rotary switch of claim 5 wherein: a plurality of anti-slip grooves (3111) are formed in the peripheral side wall of the knob portion (311), and the anti-slip grooves (3111) are evenly distributed at intervals along the circumferential direction.

7. The self-return potentiometer rotary switch of claim 4 wherein: annular groove (321) has been seted up in second rotating member (32), annular groove (321) inboard has first arch (322), and the outside has second arch (323), bar hole (3231) have been seted up on second arch (323) lateral wall, annular groove (321) with bar hole (3231) are linked together, connecting piece (41) are around establishing first arch (322) lateral wall department, just connecting piece (41) both ends are passed respectively bar hole (3231) and with corresponding spacing post (42) are connected.

8. The self-return potentiometer rotary switch of claim 2 wherein: an arc groove (11) is formed in the PCB (1), the arc groove (11) is formed along the rotation direction of the second rotating piece (32), the limiting column (42) is arranged in the arc groove (11) in a sliding mode, and the limiting column (42) is connected with the second rotating piece (32) through the connecting piece (41);

the side walls at two ends in the arc-shaped groove (11) are respectively provided with an elastic piece (6), one end of each elastic piece (6) is connected with the inner side wall of the arc-shaped groove (11), and the other end of each elastic piece is in butt joint with the connecting piece (41).

9. The self-return potentiometer rotary switch of claim 1 wherein: and the limit column (42) is detachably connected with the PCB (1).