Potentiometer with controllable angle

Abstract

The utility model relates to the technical field of potentiometers, and discloses an angle-controllable potentiometer, which comprises a base, a limiting seat and a rotating block, the limiting seat is fixedly connected to the top of the base, the rotating block is arranged above the base, an inner shell is sleeved outside the rotating block, an outer shell is sleeved outside the inner shell, and the limiting seat is fixedly connected to the top of the outer shell. The bottom of the rotating block is fixedly connected with a rotating rod, the top of the limiting seat is fixedly connected with a threaded rod, the outer portion of the threaded rod is in threaded connection with a limiting nut, and the top of the base is fixedly connected with a positioning column. According to the utility model, the rotating rod is rotated by rotating the shell, and then the connecting sheet is driven to rotate, so that the resistance of the potentiometer is adjusted, the signal intensity in the circuit is controlled, the position of the limiting nut can be adjusted by rotating the limiting nut, and the limiting position of the rotating block can be changed, so that the rotating angle of the knob can be controlled; therefore, the required resistance value or parameter can be accurately adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometers, in particular to a controllable-angle potentiometer. Background Art

[0002] A potentiometer, also known as a resistor or variable resistor, is an electronic component used to adjust the resistance value in a circuit. It usually consists of a knob or sliding control rod and a resistor body. The function of the potentiometer is to change the resistance in the circuit by adjusting the effective length of the resistor body, thereby controlling the magnitude of the current or voltage. The potentiometer plays an important role. It can not only adjust the parameters of the circuit to meet different requirements, but also be used for functions such as voltage stabilization, regulation, and signal processing.

[0003] Existing knob-type potentiometers generally change the resistance value by rotating the knob and are commonly used in occasions such as volume control and brightness adjustment. However, the knob angles of most potentiometers are uncontrollable, making it impossible to accurately adjust to the required resistance value or parameters, affecting the normal operation and performance of the device. At the same time, it is difficult to accurately adjust the device to the desired state, increasing the complexity of operation and the possibility of errors. To address the above problems, the technical personnel in this field have proposed a controllable-angle potentiometer to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a controllable-angle potentiometer, aiming to improve the problem that the rotation angle of the knob potentiometer in the prior art is uncontrollable, resulting in the inability to accurately adjust to the required resistance value or parameters, affecting the normal operation and performance of the device.

[0005] To achieve the above object, the utility model provides the following technical solution: A controllable-angle potentiometer includes a base, a limit seat, and a rotating block. The limit seat is fixedly connected to the top of the base. The rotating block is arranged above the base. An inner shell is sleeved outside the rotating block, and an outer shell is sleeved outside the inner shell. A rotating rod is fixedly connected to the bottom of the rotating block. A threaded rod is fixedly connected to the top of the limit seat. A limit nut is threadedly connected to the outside of the threaded rod. A positioning post is fixedly connected to the top of the base, and a slot is opened at the upper end of the positioning post.

[0006] Further, a limit plate is fixedly connected between the base and the limit seat. Convex blocks are arranged on the front and rear sides of the top of the limit plate. A clamping strip is clamped between the two convex blocks on the front and rear sides. A ball is arranged between the clamping strip and the limit plate.

[0007] Further, a connecting piece is arranged on the top of the limit plate, and a retaining piece is arranged on the top of the connecting piece. Both the connecting piece and the retaining piece are sleeved outside the rotating rod.

[0008] Further, a gasket is sleeved on the bottom end of the rotating rod, and a second sealing ring is arranged between the gasket and the retaining piece. The second sealing ring is sleeved on the outside of the rotating rod.

[0009] Further, a first sealing ring is sleeved on the bottom of the rotating rod, and the bottom of the rotating rod is in plug-in fit with the inside of the slot.

[0010] Further, the outer shell, the inner shell and the rotating block are fixedly connected by fixing screws, and anti-slip lines are arranged on the outside of the outer shell.

[0011] Further, the bottom of the base is fixedly connected with a PCB board by screws, and a terminal block is fixedly connected to the front side of the PCB board.

[0012] Further, the outside of the rotating rod is slidably connected with the inside of the threaded rod, and the inside of the rotating block is threadedly connected with the outside of the threaded rod.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by rotating the outer shell, the rotating block rotates, and then drives the rotating rod to rotate, so that the rotating rod can drive the connecting piece to rotate, thereby adjusting the resistance value of the potentiometer and controlling the intensity of the signal in the circuit. Since the rotating block and the threaded rod are threadedly connected, when the rotating block rotates, it will move downward, and by rotating the limit nut, its position can be adjusted, and the position restricted by the rotating block can be changed, so that the rotation angle of the knob can be controlled, and thus the required resistance value or parameter can be accurately adjusted.

[0015] 2. In the utility model, the connection between structures is made more compact by the first sealing ring and the second sealing ring, and it is not easy to loosen during use. Different types of screws are used to fix multiple structures, and the structure is delicate, so it is convenient for disassembly and maintenance to ensure the use safety of the potentiometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a potentiometer with controllable angle proposed by the utility model;

[0017] Figure 2 is an exploded view of a potentiometer with controllable angle proposed by the utility model;

[0018] Figure 3 is a schematic structural view of the base of a potentiometer with controllable angle proposed by the utility model;

[0019] Figure 4 is a schematic structural view of the rotating block of a potentiometer with controllable angle proposed by the utility model.

[0020] Legend:

[0021] 1. Base; 2. Limit seat; 3. Outer shell; 4. Inner shell; 5. Rotating block; 6. Fixing screw; 7. Limit nut; 8. Threaded rod; 9. Rotating rod; 10. Limit plate; 11. Convex block; 12. Card strip; 13. Connecting piece; 14. Ball; 15. Slot; 16. Gasket; 17. Seal ring I; 18. Seal ring II; 19. Flap; 20. Positioning column; 21. PCB board; 22. Terminal block. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Refer to Figure 1 、 Figure 2 And Figure 4 As shown in [drawings not specified in the original], an embodiment provided by the present invention: a controllable angle potentiometer includes a base 1, a limit seat 2, and a rotating block 5. The limit seat 2 is fixedly connected to the top of the base 1. The rotating block 5 is arranged above the base 1. An inner shell 4 is sleeved outside the rotating block 5, and an outer shell 3 is sleeved outside the inner shell 4. A rotating rod 9 is fixedly connected to the bottom of the rotating block 5. A threaded rod 8 is fixedly connected to the top of the limit seat 2. A limit nut 7 is threadedly connected to the outside of the threaded rod 8. A positioning column 20 is fixedly connected to the top of the base 1. A slot 15 is opened at the upper end of the positioning column 20. The outer shell 3, the inner shell 4, and the rotating block 5 are fixedly connected by fixing screws 6. Anti-slip lines are provided on the outside of the outer shell 3. The outside of the rotating rod 9 is slidably connected to the inside of the threaded rod 8. The inside of the rotating block 5 is threadedly connected to the outside of the threaded rod 8.

[0024] Specifically, by passing the fixing screws 6 through the outer shell 3, the inner shell 4, and the rotating block 5 respectively, they can be fixedly connected together. Then, when the outer shell 3 is rotated, the inner shell 4 can be driven to rotate, and then the rotating block 5 can be rotated. By driving the rotating rod 9 to rotate through the rotating block 5, the rotating rod 9 inserted into the slot 15 opened at the top of the positioning column 20 can drive the connecting piece 13 to rotate, thereby adjusting the resistance value of the potentiometer and controlling the intensity of the signal in the circuit. At the same time, since the rotating block 5 and the threaded rod 8 are threadedly connected, the rotating block 5 will move downward when rotating. When it moves to the top of the limit nut 7, it will be restricted and cannot move further. The anti-slip lines are provided to facilitate the rotation of the outer shell 3 without generating sliding.

[0025] Refer to Figure 3, a limiting plate 10 is fixedly connected between the base 1 and the limiting seat 2. Bumps 11 are arranged on the front and rear sides of the top of the limiting plate 10. A clamping strip 12 is clamped between the two bumps 11 on the front and rear sides. A ball 14 is arranged between the clamping strip 12 and the limiting plate 10. A connecting piece 13 is arranged on the top of the limiting plate 10. A retaining piece 19 is arranged on the top of the connecting piece 13. Both the connecting piece 13 and the retaining piece 19 are sleeved outside the rotating rod 9.

[0026] Specifically, the limiting plate 10 can support the connecting piece 13 on the top, and through the two bumps 11 arranged on the front and rear sides, the clamping strip 12 is clamped, so as to limit the movement of the ball 14 between the clamping strip 12 and the limiting plate 10. When the rotating rod 9 drives the connecting piece 13 to rotate, the contact point with the ball 14 can be changed, thereby changing the resistance value and realizing the adjustment of the circuit. The retaining piece 19 can support the second sealing ring 18, and can rotate along with the rotating rod 9 when the rotating rod 9 rotates, and can play a limiting role after rotating to the moving position.

[0027] Refer to Figure 2 , a gasket 16 is sleeved at the bottom end of the rotating rod 9. A second sealing ring 18 is arranged between the gasket 16 and the retaining piece 19. The second sealing ring 18 is sleeved outside the rotating rod 9. A first sealing ring 17 is sleeved at the bottom of the rotating rod 9. The bottom of the rotating rod 9 is in plug-in fit with the inside of the slot 15.

[0028] Specifically, the gasket 16 plays a protective role to avoid the limiting seat 2 directly pressing on the second sealing ring 18, thereby prolonging the service life of the second sealing ring 18, and at the same time, the sealing effect is better. The first sealing ring 17 makes the rotating rod 9 fit more tightly with the slot 15, and the structure is more compact, so that there will be no looseness during rotation.

[0029] Refer to Figure 2 , the bottom of the base 1 is fixedly connected with a PCB board 21 by screws. A terminal block 22 is fixedly connected to the front side of the PCB board 21.

[0030] Specifically, an external circuit is connected through the terminal block 22, and the control of the resistance can be realized through the PCB board 21, improving the practicability of the potentiometer.

[0031] Working principle: When using this potentiometer, by rotating the outer shell 3, the outer shell 3 drives the inner shell 4 to rotate, and then the rotating block 5 rotates. The rotating block 5 drives the rotating rod 9 to rotate, so that the rotating rod 9 inserted into the slot 15 opened at the top of the positioning column 20 can drive the connecting piece 13 to rotate, thereby adjusting the resistance value of the potentiometer and controlling the signal intensity in the circuit. At the same time, since the rotating block 5 and the threaded rod 8 are threadedly connected, the rotating block 5 will move downward when rotating. When it moves to the top of the limit nut 7, it will be restricted and cannot move further. And by rotating the limit nut 7, its position can be adjusted to change the limiting position of the rotating block 5, so that the rotation angle of the knob can be controlled, and thus accurately adjusted to the required resistance value or parameter. The rotating rod 9 is more tightly combined when inserted into the slot 15 through the first sealing ring 17 and the second sealing ring 18. By contacting the connecting piece 13 with the ball 14, the resistance value of the potentiometer can be changed during rotation, improving the accuracy of use.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A controllable angle potentiometer, comprising a base (1), a limit seat (2), and a rotating block (5), characterized in that: The limiting seat (2) is fixedly connected to the top of the base (1). The rotating block (5) is arranged above the base (1). An inner shell (4) is sleeved outside the rotating block (5). An outer shell (3) is sleeved outside the inner shell (4). A rotating rod (9) is fixedly connected to the bottom of the rotating block (5). A threaded rod (8) is fixedly connected to the top of the limiting seat (2). A limiting nut (7) is threadedly connected to the outside of the threaded rod (8). A positioning column (20) is fixedly connected to the top of the base (1). A slot (15) is opened at the upper end of the positioning column (20).

2. The controllable angle potentiometer according to claim 1, wherein: A limiting plate (10) is fixedly connected between the base (1) and the limiting seat (2). Convex blocks (11) are arranged on the front and rear sides of the top of the limiting plate (10). A clamping strip (12) is clamped between the two convex blocks (11) on the front and rear sides. A ball (14) is arranged between the clamping strip (12) and the limiting plate (10).

3. The controllable-angle potentiometer according to claim 2, wherein: A connecting piece (13) is arranged on the top of the limiting plate (10). A retaining piece (19) is arranged on the top of the connecting piece (13). Both the connecting piece (13) and the retaining piece (19) are sleeved outside the rotating rod (9).

4. A controllable angle potentiometer according to claim 1, characterized in that: A gasket (16) is sleeved at the bottom end of the rotating rod (9). A second seal ring (18) is arranged between the gasket (16) and the retaining piece (19). The second seal ring (18) is sleeved outside the rotating rod (9).

5. A controllable angle potentiometer according to claim 1, wherein: A first seal ring (17) is sleeved at the bottom of the rotating rod (9). The bottom of the rotating rod (9) is in plug-in fit with the inside of the slot (15).

6. A controllable angle potentiometer according to claim 1, characterized in that: The outer shell (3), the inner shell (4) and the rotating block (5) are fixedly connected by fixing screws (6). Anti-slip patterns are arranged on the outside of the outer shell (3).

7. A controllable angle potentiometer according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected with a PCB board (21) by screws. A terminal block (22) is fixedly connected to the front side of the PCB board (21).

8. A controllable angle potentiometer according to claim 1, characterized in that: The outside of the rotating rod (9) is slidably connected with the inside of the threaded rod (8). The inside of the rotating block (5) is threadedly connected with the outside of the threaded rod (8).

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