Rotary potentiometer with high sealing performance

Abstract

The utility model relates to the technical field of potentiometers, and discloses a high-sealing rotary potentiometer which comprises a shaft sleeve, a guide table is arranged at the top of the shaft sleeve, a mounting hole is formed in the middle of the guide table, a rotating shaft is mounted in the mounting hole, a limiting plate is arranged at the bottom of the rotating shaft, and a limiting hole is formed in the bottom of the rotating shaft. A first sealing block is fixedly installed on the inner side of the guide table, a resistance plate is fixedly installed on the top of the inner side of the shaft sleeve, a first through hole is formed in the right end of the shaft sleeve, a base is fixedly installed at the bottom of the shaft sleeve, a reed is fixedly installed on the top of the inner side of the base, and the reed is connected with the base through a fastening bolt. According to the rotary potentiometer with the high sealing performance, the waterproof cover is arranged outside the shaft sleeve and the base, so that the sealing performance of the rotary potentiometer is effectively improved, damp and dust accumulation inside the potentiometer are avoided, the stability and reliability of the potentiometer during working are effectively improved, and the service life of the potentiometer is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a potentiometer technical field, specifically is a high sealing rotation potentiometer. BACKGROUND

[0002] Potentiometer is a adjustable electronic component, it is by a resistance body and a rotation or sliding system composition, when the two fixed contact of resistance body between additional voltage, through rotation or sliding system changes the position of contact on resistance body, in the dynamic contact and fixed contact between can obtain a certain relationship with the voltage of dynamic contact position.

[0003] Potentiometer is used for a long time, because the sealing is not good, the inside is easy to be damped and accumulates dust, makes the rubbing noisy voice between the rotating shaft and the resistance board, not only reduced the stability and reliability of rotation potentiometer work, and shortens the service life of potentiometer. UTILITY MODEL CONTENT

[0004] (I) the technical problem solved

[0005] In view of the prior art's insufficient, the utility model provides a high sealing rotation potentiometer to solve the problem in the background art.

[0006] (II) technical scheme

[0007] To realize above-mentioned purpose, the utility model provides the following technical scheme: a high sealing rotation potentiometer, including the shaft sleeve, the shaft sleeve top is provided with the guide table, the guide table middle is opened with the mounting hole, the mounting hole inside is installed with the rotating shaft, the rotating shaft bottom is provided with the limit board, the rotating shaft bottom is opened with the limit hole, the guide table inboard is fixedly installed with the sealing block no.

[0008] Preferably, the center of the mounting hole and the limit table coincides.

[0009] Preferably, the sealing block no. and the sealing block no. 2 are made of rubber material.

[0010] Preferably, the through hole no. 1 and the through hole no. 2 are in one-to-one correspondence, and the terminal is fixedly installed inside the through hole no. 1 and the through hole no. 2.

[0011] Preferably, the bottom of the rotating shaft is coincided with the top of the inner side of the base, and the top of the limiting plate is coincided with the bottom of the guiding table.

[0012] Preferably, the inner diameter of the limiting hole is consistent with the outer diameter of the limiting table.

[0013] Preferably, the terminal is connected with the resistance plate at one end of the through hole two.

[0014] Compared with the prior art, the high-sealing rotary potentiometer has the following beneficial effects:

[0015] The high-sealing rotary potentiometer effectively improves the sealing performance of the rotary potentiometer by arranging the waterproof cover outside the shaft sleeve and the base, avoids the moisture and dust accumulation in the potentiometer, effectively improves the stability and reliability of the potentiometer during operation, and prolongs the service life of the potentiometer. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the sectional structure of the shaft sleeve of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the waterproof cover of the utility model.

[0020] In the drawing: 1, shaft sleeve; 2, rotating shaft; 3, base; 4, waterproof cover; 5, terminal; 101, guiding table; 102, mounting hole; 103, sealing block one; 104, resistance plate; 105, through hole one; 201, limiting plate; 202, limiting hole; 301, spring leaf; 302, fastening bolt; 303, limiting table; 401, sealing block two; 402, through hole two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] For example, Figures 1-4The utility model provides a kind of technical scheme shown in the utility model: a kind of high sealing rotary potentiometer, including shaft sleeve 1, shaft sleeve 1 top is provided with guide platform 101, guide platform 101 middle is provided with mounting hole 102, mounting hole 102 inside is installed with rotating shaft 2, rotating shaft 2 bottom is provided with limit plate 201, rotating shaft 2 bottom is provided with limit hole 202, guide platform 101 inner side is fixedly installed with sealing block one 103, shaft sleeve 1 inner side top is fixedly installed with resistance plate 104, shaft sleeve 1 right end is provided with through hole one 105, shaft sleeve 1 bottom is fixedly installed with base 3, base 3 inner side top is fixedly installed with reed 301, reed 301 is connected between base 3 by fastening bolt 302, base 3 inner side top is provided with limit platform 303, base 3 outer side is fixedly connected with waterproof cover 4, waterproof cover 4 inner side front and rear four ends are fixedly installed with sealing block two 401, waterproof cover 4 right side is provided with through hole two 402, through hole two 402 inside is fixedly installed with terminal 5.

[0023] Further, the center of mounting hole 102 and limit platform 303 coincides.

[0024] Through the above technical scheme, prevent the phenomenon of deviation when installing rotating shaft 2, cause the whole potentiometer cannot be used.

[0025] Further, sealing block one 103 and sealing block two 401 are made of rubber material.

[0026] Through the above technical scheme, improve the sealing of the whole potentiometer, prevent the inside of potentiometer from being damp and accumulating dust.

[0027] Further, through hole one 105 and through hole two 402 are one-to-one correspondence, and terminal 5 is fixedly installed inside through hole one 105 and through hole two 402.

[0028] Through the above technical scheme, ensure that the end installed in through hole one 105 can contact resistance plate 104 after installing terminal 5

[0029] Further, the bottom of rotating shaft 2 coincides with the inner side top of base 3, and the top of limit plate 201 coincides with the bottom of guide platform 101.

[0030] Through the above technical scheme, rotating shaft 2 is fixedly installed between shaft sleeve 1 and base 3, prevent rotating shaft 2 from appearing shaking and deviation phenomenon.

[0031] Further, the inner diameter of limit hole 202 and the outer diameter of limit platform 303 are consistent.

[0032] Through the above technical scheme, ensure that limit platform 303 can be installed into limit hole 202, and limit rotating shaft 2, prevent rotating shaft 2 from deviating.

[0033] Further, the wiring terminal 5 is installed at one end of the through hole two 402 and connected with the resistance plate 104.

[0034] Through the above technical scheme, it is guaranteed that the wiring terminal 5 can be electrically connected with the resistance plate 104, so that the potentiometer can effectively transmit electrical signals and adjust voltage with other circuit elements.

[0035] Working principle: first, the rotating shaft 2 is installed in the mounting hole 103, and the top of the limiting plate 201 contacts the bottom of the guide table 101, then the base 3 is fixedly installed at the bottom of the shaft sleeve 1, and the limiting table 303 is installed in the limiting hole 202, finally, the waterproof cover 4 is fixedly installed at the outer end of the shaft sleeve 1 and the base 3, and the entire potentiometer is protected by the sealing block one 102 and the sealing block two 401, so as to prevent the potentiometer from being damp and accumulating dust.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-sealing-ability rotary potentiometer comprising a shaft sleeve (1), characterized in that: The top of the shaft sleeve (1) is provided with a guide table (101), the middle of the guide table (101) is provided with a mounting hole (102), the inside of the mounting hole (102) is provided with a rotating shaft (2), the bottom of the rotating shaft (2) is provided with a limiting plate (201), the bottom of the rotating shaft (2) is provided with a limiting hole (202), the inside of the guide table (101) is fixedly provided with a sealing block one (103), the top of the inside of the shaft sleeve (1) is fixedly provided with a resistance plate (104), the right end of the shaft sleeve (1) is provided with a through hole one (105), the bottom of the shaft sleeve (1) is fixedly provided with a base (3), the top of the inside of the base (3) is fixedly provided with a reed (301), the reed (301) and the base (3) are connected through a fastening bolt (302), the top of the inside of the base (3) is provided with a limiting table (303), the outside of the base (3) is fixedly connected with a waterproof cover (4), the front and back and left and right four ends of the inside of the waterproof cover (4) are fixedly provided with a sealing block two (401), the right side of the waterproof cover (4) is provided with a through hole two (402), the inside of the through hole two (402) is fixedly provided with a terminal (5).

2. A rotary potentiometer with high sealing property according to claim 1, characterized in that: The center of the mounting hole (102) and the limiting table (303) coincides.

3. A rotary potentiometer with high sealing property according to claim 1, characterized in that: The sealing block one (103) and the sealing block two (401) are both made of rubber material.

4. A rotary potentiometer with high sealing property according to claim 1, characterized in that: The through hole one (105) and the through hole two (402) are one-to-one correspondence, and the terminal (5) is fixedly installed in the inside of the through hole one (105) and the through hole two (402).

5. A rotary potentiometer with high sealing property according to claim 1, characterized in that: The bottom of the rotating shaft (2) coincides with the top of the inside of the base (3), and the top of the limiting plate (201) coincides with the bottom of the guide table (101).

6. A high-sealing rotary potentiometer according to claim 1, characterized in that: The inner diameter of the limiting hole (202) and the outer diameter of the limiting table (303) are consistent.

7. A rotary potentiometer with high sealing property according to claim 1, characterized in that: The terminal (5) is installed in one end of the through hole two (402) and connected with the resistance plate (104).

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