CN215770723U

CN215770723U - Potentiometer shell with limiting function

Info

Publication number: CN215770723U
Application number: CN202122184995.XU
Authority: CN
Inventors: 程怀文; 郑成钢; 尹晔东; 王雅琪
Original assignee: Jingrunhong Environmental Protection Technology Tianjin Co ltd
Current assignee: Jingrunhong Environmental Protection Technology Tianjin Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-08
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a potentiometer shell with a limiting function, which comprises a device main body, wherein a screw hole is arranged at the corner of the front surface of the device main body, a graduated scale is arranged at the center of the front surface of the device main body, a pointer disc is arranged at one side of the graduated scale, a knob is arranged at one side of the pointer disc, an alarm device is arranged at the upper end of the device main body, a flashing light is arranged in the alarm device, an alarm is arranged below the flashing light, a limiting sheet, a telescopic spring, a connecting rod and a buffer rubber cushion are arranged, when the potentiometer is used, the limiting sheet, the telescopic spring, the connecting rod and the buffer rubber cushion are matched, when the knob is twisted, the limiting sheet is contacted with the buffer rubber cushion when the knob reaches the maximum limiting position, when the force cannot be buffered, the connecting rod and the telescopic spring are matched, the force generated when the knob is twisted can be buffered secondarily, the excessive force is prevented from damaging parts in the potentiometer, thereby prolonging the service time of the potentiometer.

Description

Potentiometer shell with limiting function

Technical Field

The utility model relates to the technical field of electrical components, in particular to a potentiometer shell with a limiting function.

Background

The potentiometer is a resistance element with three leading-out terminals and a resistance value adjustable according to a certain variation rule, and is generally composed of a resistor body and a movable brush, when the brush moves along the resistor body, a resistance value or a voltage in a certain relation with a displacement amount is obtained at an output terminal, the potentiometer can be used as a three-terminal element or a two-terminal element, and the potentiometer can be regarded as a variable resistor and is called as a potentiometer because the potentiometer has the function of obtaining an output voltage in a certain relation with an input voltage (an external voltage) in a circuit.

The prior art has the following defects or problems:

1. due to the lack of a corresponding limiting device in the existing potentiometer structure, the situation of over-rotation often exists during use, and the long-term repeated over-rotation can influence the control accuracy of the potentiometer and can also reduce the service life of the potentiometer;

2. in the long-term use process of the existing potentiometer, internal elements age along with the prolonging of the use time, so that the condition of electric leakage of the potentiometer and a shell is caused, and a user has certain danger when contacting the electric leakage potentiometer shell, so that the potentiometer shell with the limiting function is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a potentiometer shell with a limiting function aiming at the defects in the prior art so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a potentiometer shell with a limiting function comprises a device main body, wherein a screw hole is formed in the corner of the front surface of the device main body, a graduated scale is arranged in the center of the front surface of the device main body, a pointer disc is arranged on one side of the graduated scale, a knob is arranged on one side of the pointer disc, an alarm device is arranged at the upper end of the device main body, a flashing lamp is arranged in the alarm device, an alarm is arranged below the flashing lamp, an insulating layer is arranged on the outer surface of the device main body, an electric leakage detector is arranged at the upper end in the device main body, a first lead is arranged on one side of the electric leakage detector, a second lead is arranged on the other side of the electric leakage detector, a limiting piece is arranged at the upper end of the outer annular surface in the device main body in a manner that one end of the knob extends at the lower end of the outer annular surface in the device main body, a fixed block is arranged at the lower end of the inner annular surface of the device main body, and a connecting groove is formed in one side of the inner wall of the fixed block, the inside expanding spring that is provided with of spread groove, expanding spring one end is provided with the connecting rod, connecting rod one end is run through the fixed block inner wall and is provided with the buffering cushion, connecting rod internal surface one side is provided with the gag lever post, the gag lever post outside is provided with the spacing groove.

As a preferred technical scheme of the present invention, the number of the screw holes is four, the screw holes are respectively arranged at the corners of the device main body, and the screw holes penetrate through the inner wall of the device main body.

In a preferred embodiment of the present invention, the insulating layer is made of asbestos, and the insulating layer is bonded to an outer surface of the device body.

As a preferred embodiment of the present invention, one end of the first lead and one end of the second lead are fixedly connected to the inside of the leakage detector, and the other end of the first lead and the other end of the second lead extend into the inner wall of the device body.

As a preferred technical scheme of the utility model, the fixed block is arc-shaped, the radian of the inner surface wall of the fixed block is matched with the radian of the outer ring surface of the knob, and the fixed block is movably connected with the knob.

As a preferred technical scheme of the utility model, the connecting rod is T-shaped, and one end of the connecting rod penetrates through the inner wall of the fixed block and is fixedly connected with one end of the telescopic spring.

According to the preferred technical scheme, the limiting grooves are fixedly embedded in the inner wall of the fixing block, the number of the limiting grooves is two, the limiting grooves are symmetrically arranged on two sides of the connecting groove, one end of the limiting rod is sleeved in the limiting groove, and the limiting rod is movably connected with the limiting grooves.

Compared with the prior art, the potentiometer shell with the limiting function has the following beneficial effects:

1. according to the potentiometer shell with the limiting function, the limiting sheet, the telescopic spring, the connecting rod and the buffering rubber cushion are arranged, when the potentiometer is used, the limiting sheet, the telescopic spring, the connecting rod and the buffering rubber cushion are matched, when the knob is twisted, the limiting sheet can be in contact with the buffering rubber cushion when the knob reaches the maximum limiting position, when the force cannot be buffered, the connecting rod and the telescopic spring are matched, the force generated when the knob is twisted can be buffered for the second time, the situation that the excessive force causes damage to parts in the potentiometer is prevented, and therefore the service time of the potentiometer is prolonged;

2. this potentiometre shell with limit function through setting up alarm and leakage detector, in the potentiometre use, utilizes first wire, second wire and leakage detector's cooperation can detect whether there is the condition of electric leakage, if the electric leakage appears, leakage detector can trigger the alarm, utilizes the alarm and can remind the user of the cooperation of exploding the flashing light, closes the main power supply and changes the potentiometre to the safety in utilization of potentiometre has been improved.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

FIG. 2 is a schematic view of the overall plan structure of the present invention;

FIG. 3 is a schematic plan view of the internal structure of the alarm device of the present invention;

FIG. 4 is a schematic view of the connecting groove and the connecting rod structure of the present invention.

In the figure: 1. a device main body; 2. a screw hole; 3. a graduated scale; 4. a pointer dial; 5. a knob; 6. an alarm device; 7. flashing lights; 8. an alarm; 9. an insulating layer; 10. a leakage detector; 11. a first conductive line; 12. a second conductive line; 13. a limiting sheet; 14. a fixed block; 15. connecting grooves; 16. a tension spring; 17. a connecting rod; 18. a cushion rubber pad; 19. a limiting rod; 20. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: a potentiometer shell with a limiting function comprises a device body 1, a screw hole 2 is arranged at the corner of the front surface of the device body 1, a graduated scale 3 is arranged at the center of the front surface of the device body 1, a pointer disc 4 is arranged at one side of the graduated scale 3, a knob 5 is arranged at one side of the pointer disc 4, an alarm device 6 is arranged at the upper end of the device body 1, a flashing lamp 7 is arranged inside the alarm device 6, an alarm 8 is arranged below the flashing lamp 7, an insulating layer 9 is arranged on the outer surface of the device body 1, an electric leakage detector 10 is arranged at the upper end inside the device body 1, a first lead 11 is arranged at one side of the electric leakage detector 10, a second lead 12 is arranged at the other side of the electric leakage detector 10, a limiting piece 13 is arranged at the upper end of the outer ring surface inside the device body 1 in an extending mode at one end of the pointer disc 4, a fixing block 14 is arranged at the lower end of the outer ring surface inside the device body 1 in an extending mode at one end of the

device body

4, 14 inner wall one side of fixed block is provided with spread groove 15, and spread groove 15 is inside to be provided with expanding spring 16, and expanding spring 16 one end is provided with connecting rod 17, and connecting rod 17 one end runs through the 14 inner walls of fixed block and is provided with buffering cushion 18, and connecting rod 17 internal surface one side is provided with gag lever post 19, and the gag lever post 19 outside is provided with spacing groove 20.

In the embodiment, the number of the screw holes 2 is four, the screw holes 2 are respectively arranged at the corners of the device main body 1, the screw holes 2 penetrate through the inner wall of the device main body 1, and the device main body 1 can be conveniently fixed by arranging the screw holes 2; the insulating layer 9 is made of asbestos, the insulating layer 9 is adhered to the outer surface of the device main body 1, and the insulating layer 9 can prevent a user from mistakenly touching the device main body 1 to cause electric shock under the condition of electric leakage; one ends of the first lead 11 and the second lead 12 are fixedly connected with the inside of the leakage detector 10, the other ends of the first lead 11 and the second lead 12 extend into the inner wall of the device main body 1, and whether the leakage condition exists in the device main body 1 can be monitored in real time by utilizing the matching of the first lead 11, the second lead 12 and the leakage detector 10; the fixed block 14 is arc-shaped, the radian of the inner surface wall of the fixed block 14 is matched with the radian of the outer annular surface of the knob 5, the fixed block 14 is movably connected with the knob 5, and the knob 5 can be limited by the fixed block 14; the connecting rod 17 is T-shaped, one end of the connecting rod 17 penetrates through the inner wall of the fixed block 14 and is fixedly connected with one end of the telescopic spring 16, and the force of the knob 5 rotating to the maximum limit can be buffered by utilizing the matching of the connecting rod 17 and the telescopic spring 16; spacing groove 20 is fixed to be inlayed on 14 inner walls of fixed block, and the quantity of spacing groove 20 is two sets of, and spacing groove 20 symmetry is installed in spread groove 15 both sides, and 19 one ends of gag lever post are cup jointed in spacing groove 20 inside, and

gag lever post

19 and 20 swing joint of spacing groove utilize the cooperation of spacing groove 20 and gag lever post 19 to prevent that connecting rod 17 from the condition that the skew appears at the displacement in-process.

The working principle and the using process of the utility model are as follows: in the daily use process of the device main body 1, when the force of a user rotating the knob 5 is too large, the limiting piece 13 arranged on the outer ring surface of one end of the device main body 1 and extending from the knob 5 can be contacted with the buffering rubber cushion 18, so as to play a buffering role, if the force cannot be completely buffered, the connecting rod 17 and the expansion spring 16 arranged on the inner side of the buffering rubber cushion 18 can perform secondary buffering on the force during rotation, so as to avoid the condition that the potentiometer is damaged due to the too large rotating force, and in the daily use process, whether the electric leakage exists in the device main body 1 or not can be monitored in real time by using the first lead 11, the second lead 12 and the electric leakage detector 10, if the electric leakage occurs, the electric leakage detector 10 can activate the alarm 8, and by using the cooperation of the alarm 8 and the flashing light 7, the user can be reminded that the electric leakage occurs in the device main body 1, so as to replace the potentiometer, moreover, the insulating layer 9 can prevent the electric shock caused by the accidental touch of a user under the condition of electric leakage of the device main body 1, and the use safety of the device main body 1 is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a potentiometre shell with limit function which characterized in that: including device main part (1), device main part (1) front surface corner is provided with screw (2), device main part (1) front surface center department is provided with scale (3), scale (3) one side is provided with pointer dish (4), pointer dish (4) one side is provided with knob (5), device main part (1) upper end is provided with alarm device (6), alarm device (6) inside is provided with explodes flashing light (7), explode flashing light (7) below and be provided with alarm (8), device main part (1) surface is provided with insulating layer (9), device main part (1) inside upper end is provided with leakage current detector (10), leakage current detector (10) one side is provided with first wire (11), leakage current detector (10) opposite side is provided with second wire (12), knob (5) one end is extended and is provided with spacing piece (13) in device main part (1) inside outer anchor ring upper end ) The device comprises a main body (1) and a knob (5), wherein a fixing block (14) is arranged at the lower end of an outer annular surface in the main body (1) in an extending mode, a connecting groove (15) is formed in one side of the inner wall of the fixing block (14), an expansion spring (16) is arranged in the connecting groove (15), a connecting rod (17) is arranged at one end of the expansion spring (16), a buffer rubber pad (18) is arranged at one end of the connecting rod (17) in a penetrating mode on the inner wall of the fixing block (14), a limiting rod (19) is arranged on one side of the inner surface of the connecting rod (17), and a limiting groove (20) is formed in the outer side of the limiting rod (19).

2. A potentiometer housing having a position limiting function according to claim 1, wherein: the number of screw (2) is four groups, screw (2) set up respectively in device main part (1) corner, screw (2) run through device main part (1) inner wall.

3. A potentiometer housing having a position limiting function according to claim 1, wherein: the insulating layer (9) is made of asbestos, and the insulating layer (9) is adhered to the outer surface of the device main body (1).

4. A potentiometer housing having a position limiting function according to claim 1, wherein: one ends of the first lead (11) and the second lead (12) are fixedly connected with the inside of the leakage detector (10), and the other ends of the first lead (11) and the second lead (12) extend into the inner wall of the device main body (1).

5. A potentiometer housing having a position limiting function according to claim 1, wherein: the fixing block (14) is arc-shaped, the radian of the inner surface wall of the fixing block (14) is matched with the radian of the outer annular surface of the knob (5), and the fixing block (14) is movably connected with the knob (5).

6. A potentiometer housing having a position limiting function according to claim 1, wherein: the connecting rod (17) is T-shaped, and one end of the connecting rod (17) penetrates through the inner wall of the fixing block (14) and is fixedly connected with one end of the telescopic spring (16).

7. A potentiometer housing having a position limiting function according to claim 1, wherein: spacing groove (20) are fixed inlay on fixed block (14) inner wall, the quantity of spacing groove (20) is two sets of, spacing groove (20) symmetry is installed in spread groove (15) both sides, gag lever post (19) one end cup joints inside spacing groove (20), gag lever post (19) and spacing groove (20) swing joint.