CN211855371U - Waterproof Hall potentiometer - Google Patents

Abstract

The utility model provides a waterproof Hall potentiometer, which comprises a lower shell, an upper shell, a shaft sleeve, a shaft core, a rotating disc, a reset module and a first circuit board; the reset module comprises a chassis and a torsion spring; the upper end of the first circuit board is connected with a second circuit board, and an IC detection module is fixed on the second circuit board; the lower sides of two ends of the rotating disc are respectively connected with a first extending block and a second extending block, the inner side of the upper shell is connected with a blocking block, the second extending block is provided with an installation groove, a magnetic block is placed in the installation groove, and the second extending block and the magnetic block are arranged close to one side of the IC detection module; the waterproof shaft sleeve is characterized in that a first waterproof ring is arranged at the joint of the upper shell and the lower shell, a first annular groove is formed in the shaft core, a second waterproof ring is arranged on the first annular groove, and the second waterproof ring is located on the inner side of the shaft sleeve. The utility model discloses a hall potentiometer detects the precision height, has excellent waterproof performance.

Description

Waterproof Hall potentiometer

Technical Field

The utility model relates to a potentiometre technical field, concretely relates to waterproof hall potentiometre.

Background

A conventional potentiometer is a resistance element having three terminals and a resistance value adjustable according to a certain variation rule, and generally includes a resistor body and a movable brush. The power supply voltage is loaded at two ends of the resistor body, and when the electric brush moves along the resistor body, the resistance value or the voltage which has a certain relation with the displacement can be obtained at the output end. When the potentiometer works, the brush is in direct contact with the resistor body, the sliding friction is kept, the resistor body is abraded, the precision of the potentiometer is reduced, and the service life of the potentiometer is short.

In recent years, a contactless digital potentiometer based on the hall effect has been vigorously developed. The potentiometer is characterized in that magnetic steel is installed on a main shaft of the potentiometer, a circuit board containing a Hall sensor is arranged in a magnetic field generated by the magnetic steel, and the sensor detects the change of the magnetic field intensity when the main shaft of the potentiometer rotates and outputs a corresponding voltage signal. Because the non-contact type digital potentiometer is separated from a friction contact type structure, the resistor body is not easy to wear, so that the potentiometer can maintain high precision for a long time, and the service life is poor. However, the Hall potentiometer in the prior art has a simple and crude structure and poor waterproof performance.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a waterproof hall potentiometer detects the precision height, has excellent waterproof performance.

In order to achieve the above object, the present invention provides the following technical solutions:

a waterproof Hall potentiometer comprises a lower shell, an upper shell, a shaft sleeve, a shaft core, a rotating disc, a reset module and a first circuit board, wherein the upper shell is sleeved at the upper end of the lower shell;

the reset module comprises a chassis connected to the bottom of the shaft core and a torsion spring sleeved on the outer side of the bottom of the shaft core;

the upper end of the first circuit board is connected with a second circuit board, and an IC detection module is fixed on the second circuit board;

the lower sides of two ends of the rotating disc are respectively connected with a first extending block and a second extending block, the inner side of the upper shell is connected with a blocking block, the first extending block and the blocking block are clamped between two long handles of the torsion spring, an installation groove is formed in the second extending block, a magnetic block is placed in the installation groove, and the second extending block and the magnetic block are arranged close to one side of the IC detection module;

the waterproof shaft sleeve is characterized in that a first waterproof ring is arranged at the joint of the upper shell and the lower shell, a first annular groove is formed in the shaft core, a second waterproof ring is arranged on the first annular groove, and the second waterproof ring is located on the inner side of the shaft sleeve.

Specifically, the shaft sleeve comprises an extension part and a mounting part, wherein an external thread is arranged on the extension part, a first annular tooth-shaped protrusion and a second annular tooth-shaped protrusion are arranged on the mounting part, the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion are arranged in parallel along the direction of the shaft core, and a first annular tooth socket and a second annular tooth socket which are matched with the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion are arranged at an opening at the upper end of the upper shell.

Specifically, a second annular groove is further formed in the shaft core, and a notch limiting ring is arranged on the second annular groove.

Specifically, the chassis is in threaded connection with the shaft core.

Specifically, the first circuit board is electrically connected with the second circuit board, and the first circuit board is further connected with conductive pins.

Specifically, go up the casing and include first sleeve, second sleeve, first sleeve inserts the casing is inboard down, first waterproof circle is located first sleeve downside, be equipped with L type installation department down on the casing, second sleeve outside be equipped with L type installation department matched with L type mounting groove.

Specifically, lubricating oil is filled in the gap position on the inner side of the first annular groove.

The utility model has the advantages that:

first, the hall potentiometer of the present invention drives the magnetic block to rotate by the rotation of the shaft core, so that the IC detection module detects the change of the magnetic field, and the circuit in the IC detection module generates a potential difference at both ends by using the hall effect, thereby outputting a corresponding signal and determining the rotation angle measurement of the shaft core;

the second, divide into first sleeve, second sleeve with last casing to increased first waterproof circle at first sleeve downside, be equipped with first ring channel on the axle core, be equipped with the waterproof circle of second on the first ring channel, improved holistic waterproof performance.

Drawings

Fig. 1 is a schematic structural view of a waterproof hall potentiometer according to the present invention.

Fig. 2 is a front view of the waterproof hall potentiometer of the present invention.

3 fig. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 the 3 plane 3 a 3- 3 a 3 in 3 fig. 32 3. 3

Fig. 4 is a cross-sectional view taken along the plane B-B in fig. 2.

Fig. 5 is an exploded view of a waterproof hall potentiometer according to the present invention.

Fig. 6 is a schematic diagram of the action principle of the IC detection module and the magnetic block of the present invention.

The reference signs are: the device comprises a lower shell 1, an L-shaped mounting part 11, an upper shell 2, a first sleeve 21, a second sleeve 22, a stop block 201, an L-shaped mounting groove 202, a shaft sleeve 3, an extension part 31, a mounting part 32, a shaft core 4, a rotating disc 5, a first extension block 51, a second extension block 52, a reset module 6, a chassis 61, a torsion spring 62, a first circuit board 7, a second circuit board 71, an IC detection module 72, a conductive pin 73, a magnetic block 8, a first waterproof ring 91, a second waterproof ring 92 and a notch limiting ring 93.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Referring to FIGS. 1-6:

the utility model provides a waterproof hall potentiometer, includes casing 1 down, the cover is established casing 2 on casing 1 upper end down, set up at 2 upper end open-ended axle sleeves 3 of casing, the cover establish at 3 inboard axle cores 4 of axle sleeve, connect at the rolling disc 5 of axle core 4 bottom, be located rolling disc 5 bottom and with axle core 4 fixed connection reset module 6, be located the first circuit board 7 of the module 6 downside that resets.

The reset module 6 comprises a chassis 61 connected to the bottom of the shaft core 4 and a torsion spring 62 sleeved on the outer side of the bottom of the shaft core 4, and the reset module 6 is used for automatically resetting the shaft core 4.

The upper end of the first circuit board 7 is connected with a second circuit board 71, an IC detection module 72 is fixed on the second circuit board 71, and the IC detection module 72 is used for detecting the magnetism of the magnetic block 8 and outputting a corresponding signal by using a potential difference generated by a Hall effect.

The lower sides of two ends of the rotating disc 5 are respectively connected with a first extending block 51 and a second extending block 52, the inner side of the upper shell 2 is connected with a blocking block 201, the first extending block 51 and the blocking block 201 are all clamped between two long handles of a torsion spring 62, the rotating disc 5 can be automatically reset by utilizing the torsion action of the torsion spring 62, the second extending block 52 is provided with a mounting groove, a magnetic block 8 is placed in the mounting groove, the second extending block 52 and the magnetic block 8 are arranged close to one side of the IC detection module 72, as shown in figure 6, the inner side of the IC detection module 72 can be provided with a corresponding second magnetic block and a conductive block, two ends of the conductive block are connected with a positive electrode and a negative electrode of a power supply, when the magnetic block 8 rotates to the front of the IC detection module 72, an N pole of the magnetic block 8 is opposite to an S pole of the second magnetic block, and the Hall effect can know that the current in the conductive block is subjected to an, and then the signals are transmitted to a corresponding control system for judgment through the second circuit board 71, the first circuit board 7 and the conductive pins 73, so as to determine the rotation angle of the shaft core 4.

In order to improve the whole waterproof performance of hall potentiometer, the handing-over department of going up casing 2 and lower casing 1 is equipped with first waterproof circle 91, is equipped with first ring channel on the axle core 4, is equipped with the waterproof circle 92 of second on the first ring channel, and the waterproof circle 92 of second is located the axle sleeve 3 inboard.

Preferably, in order to further improve the sealing performance of the hall potentiometer, the shaft sleeve 3 includes an extension portion 31 and a mounting portion 32, an external thread is provided on the extension portion 31, a first annular tooth-shaped protrusion and a second annular tooth-shaped protrusion are provided on the mounting portion 32, the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion are arranged in parallel along the direction of the shaft core 4, and a first annular tooth groove and a second annular tooth groove matched with the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion are provided at an upper end opening of the upper housing 2.

Preferably, a second annular groove is further formed in the shaft core 4, and a notch limiting ring 93 is arranged on the second annular groove.

Preferably, the chassis 61 is screwed to the shaft core 4, and the screw connection is easier to install, so that the installation efficiency of the chassis 61 and the shaft core 4 can be improved.

Preferably, the first circuit board 7 is electrically connected to the second circuit board 71, and the first circuit board 7 is further connected to a conductive pin 73.

Preferably, the upper casing 2 includes a first sleeve 21 and a second sleeve 22, the first sleeve 21 is inserted into the inner side of the lower casing 1, the first waterproof ring 91 is located at the lower side of the first sleeve 21, the lower casing 1 is provided with an L-shaped mounting portion 3211, and the outer side of the second sleeve 22 is provided with an L-shaped mounting groove 202 matched with the L-shaped mounting portion 3211.

Preferably, in order to improve the sealing performance between the shaft core 4 and the sleeve 3 and reduce the rotational friction of the shaft core 4, the gap position inside the first annular groove is further filled with lubricating oil.

The above examples only represent 1 embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. A waterproof Hall potentiometer is characterized by comprising a lower shell (1), an upper shell (2) sleeved at the upper end of the lower shell (1), a shaft sleeve (3) arranged at an opening at the upper end of the upper shell (2), a shaft core (4) sleeved at the inner side of the shaft sleeve (3), a rotating disc (5) connected to the bottom of the shaft core (4), a reset module (6) located at the bottom of the rotating disc (5) and fixedly connected with the shaft core (4), and a first circuit board (7) located at the lower side of the reset module (6);

the reset module (6) comprises a chassis (61) connected to the bottom of the shaft core (4) and a torsion spring (62) sleeved on the outer side of the bottom of the shaft core (4);

the upper end of the first circuit board (7) is connected with a second circuit board (71), and an IC detection module (72) is fixed on the second circuit board (71);

the lower sides of two ends of the rotating disc (5) are respectively connected with a first extending block (51) and a second extending block (52), the inner side of the upper shell (2) is connected with a blocking block (201), the first extending block (51) and the blocking block (201) are respectively clamped between two long handles of the torsion spring (62), an installation groove is formed in the second extending block (52), a magnetic block (8) is placed in the installation groove, and the second extending block (52) and the magnetic block (8) are arranged close to one side of the IC detection module (72);

go up casing (2) with the handing-over department of casing (1) is equipped with first waterproof circle (91) down, be equipped with first ring channel on axle core (4), be equipped with second waterproof circle (92) on the first ring channel, second waterproof circle (92) are located axle sleeve (3) are inboard.

2. The waterproof Hall potentiometer according to claim 1, wherein the shaft sleeve (3) comprises an extension portion (31) and a mounting portion (32), the extension portion (31) is provided with an external thread, the mounting portion (32) is provided with a first annular tooth-shaped protrusion and a second annular tooth-shaped protrusion, the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion are arranged in parallel along a direction of the shaft core (4), and the upper opening of the upper housing (2) is provided with a first annular tooth socket and a second annular tooth socket which are matched with the first annular tooth-shaped protrusion and the second annular tooth-shaped protrusion.

3. The waterproof Hall potentiometer according to claim 1, wherein a second annular groove is further formed in the shaft core (4), and a notch limiting ring (93) is arranged on the second annular groove.

4. The waterproof Hall potentiometer according to claim 1, wherein the base plate (61) is in threaded connection with the shaft core (4).

5. The waterproof Hall potentiometer according to claim 1, wherein the first circuit board (7) is electrically connected to the second circuit board (71), and the first circuit board (7) is further connected to a conductive pin (73).

6. The waterproof Hall potentiometer according to claim 1, wherein the upper housing (2) comprises a first sleeve (21) and a second sleeve (22), the first sleeve (21) is inserted into the inner side of the lower housing (1), the first waterproof ring (91) is positioned on the lower side of the first sleeve (21), an L-shaped mounting portion (32) (11) is arranged on the lower housing (1), and an L-shaped mounting groove (202) matched with the L-shaped mounting portion (32) (11) is arranged on the outer side of the second sleeve (22).

7. The waterproof hall potentiometer according to claim 1, wherein the gap inside the first annular groove is further filled with lubricating oil.

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