A potentiometer with a push switch and a self-locking function

Abstract

The present invention provides a potentiometer with a push switch and a self-locking function, which includes a resistor sheet body and a switch body. The switch body is installed on the top side of the resistor sheet body. A bushing is connected to the bottom side of the resistor sheet body, and a sleeve is connected inside the bushing. A shaft core is installed inside the sleeve. One end of the shaft core is disposed outside the bottom of the bushing, and a knob is fixedly installed at the outer end. The top end of the shaft core penetrates through the resistor sheet body, and a moving piece for adjusting the resistance value is connected to the top side of the resistor sheet body. By the cooperation of the limiting strip on the fixing ring with the upper saw teeth of the push key and the lower saw teeth of the rotor, when the shaft core is pressed to drive the push key to move upward, the rotor can be driven to rotate and adjust, so as to drive the contact piece to rotate and adjust, realize the contact or separation with the contact copper sheet, and achieve the effect of on and off of the overall current of the potentiometer. Compared with the prior art using the control IC method, it has the advantages of more stable structure and longer service life.

Description

Technical Field

[0001] This invention belongs to the field of variable resistor technology, and more specifically, relates to a potentiometer with a push-button switch and a self-locking function. Background Technology

[0002] A potentiometer is a resistive element with three terminals whose resistance can be adjusted according to a certain rule. A potentiometer typically consists of a resistive element and a movable brush. When the brush moves along the resistive element, a resistance value or voltage is obtained at the output terminal that is related to the displacement. A potentiometer can be used as either a three-terminal or a two-terminal element. The latter can be considered a variable resistor; because its function in the circuit is to obtain an output voltage that is related to the input voltage (applied voltage), it is called a potentiometer.

[0003] Some existing potentiometers have a push-button switch installed inside to cut off and conduct the current of the potentiometer as a whole. The push-button switch has a control IC inside to control the overall switch. The overall switch is highly dependent on the control IC. If the push-button switch is used repeatedly and the control IC fails, the switch operation of the potentiometer cannot be guaranteed, which has certain limitations.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a potentiometer with a push-button switch and a self-locking function, in order to achieve a more practical value. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a potentiometer with a push-button switch and a self-locking function, which is achieved by the following specific technical means:

[0006] A potentiometer with a push-button switch and a self-locking function includes a resistive element body and a switch body. The switch body is mounted on the top side of the resistive element body. A bushing is connected to the bottom side of the resistive element body. A bushing is connected inside the bushing. A shaft is installed inside the bushing. One end of the shaft is located on the outer bottom of the bushing, and a knob is fixedly mounted on the outer end. The top end of the shaft passes through the resistive element body, and a movable piece for adjusting the resistance value is connected to the top side of the resistive element body. A mounting through hole is provided on the top of the switch body. A retaining ring is provided at the bottom end of the mounting through hole. Eight sets of limit strips are provided at equal angles on the top side of the retaining ring. A push button is installed inside the mounting through hole, and a knob is mounted on the top of the push button. The rotor has four sets of protruding strips (one and four sets of protruding strips) at equal angles on the outer side of the push button and the rotor. The top of the push button and the bottom of the rotor have upper and lower serrations, respectively, and the upper and lower serrations can mesh with each other. The rotor has a limit post near the top of the protruding strips. The top of the rotor is equipped with a contact piece, which is cross-shaped, and the corners of the cross shape are provided with slots that can engage with the limit post. A pair of contact copper pieces are installed on one side of the top of the switch body, and the pair of contact copper pieces are located on the bottom side of the contact pieces. The pair of contact copper pieces are distributed at 90° on the outer side of the mounting through hole. Each contact copper piece has a pin on one side, and one end of the pin is located on the outer side of the switch body.

[0007] Furthermore, the fixing ring and limit bar are integrated with the switch body.

[0008] Furthermore, the widths of convex strip one and convex strip two are equal, and their width values ​​are equal to the spacing between the limiting strips.

[0009] Furthermore, both the upper and lower saw teeth are provided with eight sets, and all of them are V-shaped. The top surface of the first convex strip is flush with the upper saw teeth, and its top surface is an outwardly convex V-shape; the bottom surface of the second convex strip is flush with the lower saw teeth, and its bottom surface is a separate inclined surface.

[0010] Furthermore, the top of the limiting strip is provided with a contact surface that is parallel to the inclined surface of the bottom end of the protrusion.

[0011] Furthermore, the bottom ends of the pressing button, the rotor, and the contact piece are all cylindrical, with the bottom end of the rotor installed inside the pressing button and the bottom end of the contact piece installed inside the rotor.

[0012] Furthermore, a rear cover is installed on the top side of the switch body, a fixed shaft is installed at the center of the interior of the rear cover, and a compression spring is fitted on the outside of the fixed shaft, with the bottom end of the compression spring installed inside the cylinder of the contact piece.

[0013] Furthermore, a vertical bracket is installed at the top of the back cover, and the vertical bracket, back cover, switch body, resistor body and bushing are fixedly connected by rivets.

[0014] Furthermore, the top of the shaft is flat and extends from the bottom of the moving piece, with the top of the shaft contacting the bottom of the pressing key.

[0015] Furthermore, a retaining ring is also engaged in the middle of the shaft core, and the retaining ring is located at the top of the bushing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention utilizes the cooperation between the limiting strip on the fixed ring, the upper serration of the pressing key, and the lower serration of the rotor. When the pressing shaft drives the pressing key upward, it drives the rotor to rotate and adjust, thereby driving the contact piece to rotate and adjust, achieving contact or separation with the contact copper piece, thus achieving the effect of the potentiometer's overall current conduction and disconnection. Compared with the existing technology that uses a control IC, this invention has the advantages of more stable structure and longer service life. Attached Figure Description

[0018] Figure 1 This is an exploded view of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the installation of the retaining ring, the pressing key, the rotor, and the contact piece of the present invention. Figure 1 .

[0022] Figure 5 This is an exploded schematic diagram of the fixing ring, pressing key, rotor, and contact piece of the present invention.

[0023] Figure 6 This is a schematic diagram of the installation of the retaining ring, the pressing key, the rotor, and the contact piece of the present invention. Figure 2 .

[0024] Figure 7 This is a schematic diagram of the current conduction of the potentiometer with a self-locking function and push-button switch according to the present invention.

[0025] Figure 8 This is a schematic diagram of the potentiometer with a self-locking function and push-button switch of the present invention being disconnected from the current.

[0026] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0027] 1. Shaft core; 2. Bushing; 3. Bushing; 4. Snap ring; 5. Resistor body; 6. Moving piece; 7. Press button; 8. Switch body; 9. Rotor; 10. Contact piece; 11. Compression spring; 12. Back cover; 13. Vertical bracket; 14. Rivet;

[0028] 701, Raised bar one; 702, Upper serration; 801, Mounting through hole; 802, Retaining ring; 803, Contact copper sheet; 901, Raised bar two; 902, Limiting post; 903, Lower serration. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0030] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example:

[0033] As attached Figure 1 To be continued Figure 8 As shown:

[0034] This invention provides a potentiometer with a push-button switch and a self-locking function, comprising a resistive element body 5 and a switch body 8. The switch body 8 is mounted on the top side of the resistive element body 5. A bushing 2 is connected to the bottom side of the resistive element body 5. A bushing 3 is connected inside the bushing 2. A shaft core 1 is installed inside the bushing 3. One end of the shaft core 1 is located on the bottom outer side of the bushing 2, and a knob is fixedly installed on the outer end. The top end of the shaft core 1 penetrates the resistive element body 5, and a movable piece 6 for adjusting the resistance value is connected to the top side of the resistive element body 5. A mounting through hole 801 is provided on the top of the mounting through hole 801. A fixing ring 802 is provided at the bottom end of the mounting through hole 801. Eight sets of limit strips are provided at equal angles on the top side of the fixing ring 802. A push button 7 is installed inside the mounting through hole 801. A rotor 9 is installed on the top of the push button 7. Four sets of protrusions 701 and four sets of protrusions 901 are provided at equal angles on the outer sides of the button 7 and the rotor 9, respectively. The top of the button 7 and the bottom of the rotor 9 are provided with upper serrations 702 and lower serrations 903, respectively, and the upper serrations 702 can mesh with the lower serrations 903. The rotor 9 is provided with limit posts 902 near the top of the protrusions 901. The top of the rotor 9 is equipped with a contact piece 10, which is cross-shaped, and the corners of the cross shape are provided with slots that can engage with the limit posts 902. A pair of contact copper pieces 803 are installed on one side of the top of the switch body 8, and the pair of contact copper pieces 803 are located on the bottom side of the contact piece 10. The pair of contact copper pieces 803 are distributed at 90° on the outer side of the mounting through hole 801. A pin is provided on one side of each contact copper piece 803, and one end of the pin is located on the outer side of the switch body 8.

[0035] The fixing ring 802 and the limit bar are integrated with the switch body 8. By adopting an integrated structure, it is easier to produce and assemble and reduce the manufacturing cost of the structure, while also improving the stability of the structure.

[0036] Among them, the width of the first protrusion 701 and the second protrusion 901 are equal, and the width value is equal to the distance between the limiting strip. This design allows the first protrusion 701 and the second protrusion 901 to slide up and down between the limiting strip, so as to drive the rotor 9 to rotate.

[0037] The upper saw teeth 702 and the lower saw teeth 903 are each provided with eight sets, and all of them are V-shaped. The top surface of the first convex strip 701 is set flat with the upper saw teeth 702, and its top surface is an outward convex V-shape. The bottom surface of the second convex strip 901 is set flat with the lower saw teeth 903, and its bottom surface is a separate inclined surface.

[0038] The top of the limiting strip is provided with a contact surface that is parallel to the bottom inclined surface of the second protrusion 901. By setting the top inclined surface of the limiting strip to be parallel to the bottom inclined surface of the second protrusion 901, when the pressing key 7 pushes the second protrusion 901 of the rotor 9 to disengage from the limiting strip, it can slide downward along the top inclined surface of the limiting strip under the action of the compression spring 11, and can rotate while sliding.

[0039] The bottom ends of the pressing key 7, the rotor 9, and the contact piece 10 are all cylindrical. The bottom end of the rotor 9 is installed inside the pressing key 7, and the bottom end of the contact piece 10 is installed inside the rotor 9. This design ensures that the pressing key 7, the rotor 9, and the contact piece 10 are always in contact and conductive before and after the rotor 9 drives the contact piece 10 to rotate. This allows the current to be guided along the rotor 9, the pressing key 7, and the shaft core 1 to the moving piece 6 when the contact piece 10 contacts the contact copper sheet 803, so that the moving piece 6 can be driven to adjust the resistance when the shaft core 1 is rotated.

[0040] The switch body 8 has a back cover 12 installed on its top side. A fixed shaft is installed at the center of the back cover 12, and a compression spring 11 is fitted on the outside of the fixed shaft. The bottom end of the compression spring 11 is installed inside the cylinder of the contact piece 10. The compression spring 11 facilitates the retraction of the button 7 and the rotation adjustment of the rotor 9 when the button 7 is pressed once.

[0041] The top of the back cover 12 is also equipped with a vertical bracket 13, and the vertical bracket 13, the back cover 12, the switch body 8, the resistor body 5 and the bushing 2 are fixedly connected by rivets 14.

[0042] The top of the shaft core 1 is flat and extends from the bottom of the moving piece 6. The top of the shaft core 1 contacts the bottom of the pressing key 7. The flat end design ensures that the moving piece 6 can rotate synchronously with the shaft core 1, so as to achieve precise adjustment of the resistance.

[0043] The shaft core 1 is also fitted with a retaining ring 4 in the middle, and the retaining ring 4 is located at the top of the bushing 3. By setting the retaining ring 4, the shaft core 1 can be stably locked at the top of the bushing 3, and the shaft core 1 will not easily fall off.

[0044] The working principle of this embodiment is as follows: During use, pressing the knob drives the shaft core 1 to move upwards through the mounting through hole 801, pressing the button 7. When the button 7 disengages the second protrusion 901 of the rotor 9 from the limiting strip, the interaction between the upper serration 702 of the button 7 and the lower serration 903 of the rotor 9 drives the rotor 9 to rotate at a certain angle. At this time, the bottom inclined surface of the second protrusion 901 is positioned on the top inclined surface of the limiting strip. After releasing the knob, the rotor 9 and the contact piece 10 move downwards under the action of the compression spring 11, and the second protrusion 901 descends and rotates along the top inclined surface of the limiting strip. The switch falls onto the fixing ring 802. During this process, the limiting strip, the upper serration 702, and the lower serration 903 are all equipped with eight sets. That is, a single press and release of the knob will drive the rotor 9 to rotate the contact piece 10 by 45°. Since the contact piece 10 is in a cross shape and a pair of contact copper pieces 803 are distributed at 90° on the outside of the mounting through hole 801, the contact piece 10 can make contact with or separate from the contact copper pieces 803 when it rotates 45°. This realizes the current conduction and disconnection of the switch body 8. Compared with the existing technology that uses a control IC, the structure has higher stability and longer service life.

[0045] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A potentiometer with a push-button switch and a self-locking function, comprising a resistive element body (5) and a switch body (8), wherein the switch body (8) is mounted on the top side of the resistive element body (5), a bushing (2) is connected to the bottom side of the resistive element body (5), a bushing (3) is connected inside the bushing (2), a core (1) is installed inside the bushing (3), one end of the core (1) is located on the bottom outer side of the bushing (2), and a knob is fixedly mounted on the outer end, the top end of the core (1) penetrates the resistive element body (5), and a movable piece (6) for adjusting the resistance value is connected to the top side of the resistive element body (5), characterized in that: The top of the switch body (8) is provided with a mounting through hole (801). A fixing ring (802) is provided at the bottom of the inner part of the mounting through hole (801). Eight sets of limiting strips are provided at equal angles on the top side of the fixing ring (802). A pressing key (7) is installed inside the mounting through hole (801). A rotor (9) is installed on the top of the pressing key (7). Four sets of protruding strips one (701) and four sets of protruding strips two (901) are provided at equal angles on the outer sides of the pressing key (7) and the rotor (9). The top of the pressing key (7) and the bottom of the rotor (9) are provided with upper serrations (702) and lower serrations (903), respectively, and the upper serrations (702) can interact with the lower serrations (903). The rotor (9) is provided with a limit post (902) at the top end near the second protrusion (901). The top end of the rotor (9) is equipped with a contact piece (10). The contact piece (10) is cross-shaped, and the corner of the cross shape is provided with a slot that can engage with the limit post (902). A pair of contact copper pieces (803) are installed on one side of the top of the switch body (8). The pair of contact copper pieces (803) are located on the bottom side of the contact piece (10). The pair of contact copper pieces (803) are distributed at 90° on the outside of the mounting through hole (801). A pin is provided on one side of the contact copper piece (803), and one end of the pin is located on the outside of the switch body (8).

2. The potentiometer with a self-locking function and push-button switch as described in claim 1, characterized in that: The fixing ring (802) and the limiting strip are integrated with the switch body (8).

3. The potentiometer with a push-button switch and self-locking function as described in claim 1, characterized in that: The widths of the first protrusion (701) and the second protrusion (901) are equal, and their width values ​​are equal to the spacing between the limiting strips.

4. The potentiometer with a push-button switch and self-locking function as described in claim 1, characterized in that: The upper saw teeth (702) and lower saw teeth (903) are each provided with eight sets, and all of them are V-shaped. The top surface of the first convex strip (701) is set flat with the upper saw teeth (702), and its top surface is an outwardly convex V-shape. The bottom surface of the second convex strip (901) is set flat with the lower saw teeth (903), and its bottom surface is a separate inclined surface.

5. The potentiometer with a push-button switch and self-locking function as described in claim 4, characterized in that: The top of the limiting strip is provided with a contact surface that is parallel to the inclined surface at the bottom of the second protrusion (901).

6. The potentiometer with a push-button switch and self-locking function as described in claim 1, characterized in that: The bottom ends of the pressing key (7), the rotor (9) and the contact piece (10) are all cylindrical, and the bottom end of the rotor (9) is installed inside the pressing key (7), and the bottom end of the contact piece (10) is installed inside the rotor (9).

7. The potentiometer with a push-button switch and self-locking function as described in claim 6, characterized in that: The top side of the switch body (8) is equipped with a back cover (12), a fixed shaft is installed at the center of the back cover (12), and a compression spring (11) is fitted on the outside of the fixed shaft, and the bottom end of the compression spring (11) is installed inside the cylinder of the contact piece (10).

8. The potentiometer with a push-button switch and self-locking function as described in claim 7, characterized in that: The top of the rear cover (12) is also equipped with a vertical bracket (13), and the vertical bracket (13), the rear cover (12), the switch body (8), the resistor body (5) and the bushing (2) are fixedly connected by rivets (14).

9. The potentiometer with a push-button switch and self-locking function as described in claim 1, characterized in that: The top of the shaft core (1) is flat and extends out from the bottom of the moving piece (6), and the top of the shaft core (1) contacts the bottom of the pressing key (7).

10. The potentiometer with a push-button switch and self-locking function as described in claim 1, characterized in that: A retaining ring (4) is also fitted into the middle of the shaft core (1), and the retaining ring (4) is located at the top of the bushing (3).

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