Resistively adjustable connecting line

Abstract

The utility model discloses a kind of connecting wires with adjustable resistance, including connector, storage box, wire rod, main shaft, PCB board and adjusting part. By rotatably installing main shaft on storage box, adjusting part is arranged between the top end surface of main body part and PCB board and moves with the rotation of main shaft, two contact parts are in contact with two carbon film conductive parts respectively, user changes the through distance of current on carbon film conductive part by rotating main shaft to change the resistance of resistance, then cooperate with the interference part in storage cavity, the side of main body part is protruded with convex part, when resistance resistance value is adjusted by rotating main shaft, the interference of convex part and interference part can provide a resistance, the existence of this resistance ensures that connecting wire cannot be affected by some subtle contact from outside, and resistance resistance value adjustment phenomenon occurs, effectively improve the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of adapter cables, and in particular to an adjustable resistance connecting cable. Background Technology

[0002] In products used in industries such as home appliances, power amplifiers, and testing equipment, some functions require adjusting the resistance value to achieve the corresponding effect, such as adjusting the volume of a speaker. To address this, most manufacturers have developed adjustable resistance cables. These cables typically work by rotating a shaft to adjust the contact position between the contacts and the variable resistor, thereby achieving flexible control over resistance and current to adjust the desired function.

[0003] Currently, adjustable resistance cables on the market allow for resistance adjustment via twisting or rotating. However, the friction from twisting and rotating is very small. When the cable doesn't require resistance adjustment, even slight external contact can cause the resistance to adjust, affecting the user experience. Therefore, it is necessary to propose a new solution to address this problem. Utility Model Content

[0004] In view of this, the present invention addresses the shortcomings of the existing technology and its main purpose is to provide a resistance-adjustable connecting cable. This effectively solves the problem that existing resistance-adjustable connecting cables, when not requiring resistance adjustment, are prone to resistance value adjustment under slight external contact, thus affecting the user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable resistance connecting cable includes a connector, a storage box, a cable, a spindle, a PCB board, and an adjusting component. The storage box has a storage cavity with an interference portion inside. The cable has a first connecting end and a second connecting end, which are respectively located at both ends of the cable. The first connecting end is connected to the connector, and the second connecting end extends into the storage box. The spindle is rotatably mounted on the storage box and includes an integrally formed main body and an adjusting component. The main body is located within the storage cavity. Inside, the side of the main body has a protrusion that can make interference contact with the interference part, and the adjustment part extends out of the storage box; the PCB board is disposed in the storage cavity and located above the top surface of the main body, the PCB board is connected and conductive to the second connection end of the wire, and the bottom surface of the PCB board is provided with two carbon film conductive parts, both of which are annular; the adjustment member is disposed between the top surface of the main body and the PCB board and moves with the rotation of the spindle, the adjustment member has two contact parts, and the two contact parts respectively contact the two carbon film conductive parts.

[0007] As a preferred embodiment, the connector includes a body, a front terminal block, and a rear terminal block. The body has three front terminal slots and three rear terminal slots, and the rear side of the body has three connection holes, each of which connects to a corresponding rear terminal slot. The front and rear terminal blocks each consist of three terminals, each terminal being disposed in a corresponding front or rear terminal slot. The first connecting end has three first connecting portions, which extend into corresponding connection holes and are connected to corresponding terminals of the rear terminal block. The second connecting end has three second connecting portions, two of which are connected to both ends of one carbon film conductive portion, and the other second connecting portion is connected to another carbon film conductive portion.

[0008] As a preferred embodiment, each terminal has an elastic groove at its upper end, which extends vertically.

[0009] As a preferred embodiment, the main body is provided with a positioning part.

[0010] As a preferred embodiment, a fixing post is provided on the top surface of the main body, and a fixing hole is provided on the adjusting member, into which the aforementioned fixing post is inserted.

[0011] As a preferred option, each contact portion has multiple strip grooves.

[0012] As a preferred embodiment, the adjustment part has a flat plate portion.

[0013] As a preferred embodiment, the storage box includes a box body and a lid, the box body having the aforementioned storage cavity, and the lid being disposed on the box body and sealing the storage cavity.

[0014] As a preferred embodiment, a shaft post is provided protruding upward from the center of the top surface of the main body, and a through hole is provided in the center of the PCB board, with the aforementioned shaft post extending into the through hole.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0016] By rotatably mounting the spindle on the storage box, the adjustment component is positioned between the top surface of the main body and the PCB board and moves with the rotation of the spindle. The two contact parts respectively contact the two carbon film conductive parts. The user changes the resistance value by rotating the spindle to change the path of the current through the carbon film conductive parts. In addition, there is an interference part in the storage cavity and a protrusion on the side of the main body. When it is necessary to rotate the spindle to adjust the resistance value, the interference between the protrusion and the interference part will provide a resistance. The existence of this resistance ensures that the connection wire will not be affected by some minor external contact and the resistance value will not be adjusted, effectively improving the user experience.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0018] Figure 1 This is a three-dimensional assembly diagram of a preferred embodiment of the present invention;

[0019] Figure 2 This is an exploded view of a preferred embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the PCB board in a preferred embodiment of the present invention;

[0022] Figure 5 This is an enlarged schematic diagram of the adjusting member in a preferred embodiment of the present invention;

[0023] Figure 6 This is a partial assembly diagram of a preferred embodiment of the present invention;

[0024] Figure 7 This is an enlarged schematic diagram of the assembly and cooperation of the box body and the main shaft in a preferred embodiment of this utility model.

[0025] Explanation of reference numerals in the attached diagram:

[0026] 10. Connector 101. Terminal

[0027] 11. Body 111. Front terminal slot

[0028] 112. Rear terminal slot; 113. Connecting hole

[0029] 114. Positioning part; 12. Front terminal block

[0030] 13. Rear terminal block; 20. Storage box

[0031] 201. Reception cavity; 202. Interference section

[0032] 21. Box body 22. Lid body

[0033] 30. Wire; 31. First connector

[0034] 311. First connecting part; 32. Second connecting end

[0035] 321. Second connecting part; 40. Main spindle

[0036] 41. Main part 411, convex part

[0037] 412. Fixed column; 413. Shaft column

[0038] 42. Adjustment section; 421. Flat plate section

[0039] 50. PCB board; 51. Carbon film conductive part

[0040] 52. Through hole 60. Adjusting component

[0041] 61. Contact part 611. Strip groove. Detailed Implementation

[0042] Please refer to Figures 1 to 7 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a connector 10, a storage box 20, a wire 30, a spindle 40, a PCB board 50, and an adjustment component 60.

[0043] The connector 10 includes a body 11, a front terminal block 12, and a rear terminal block 13. The body 11 has three front terminal slots 111 and three rear terminal slots 112, and three connecting holes 113 are provided on the rear side of the body 11. The three connecting holes 113 are all connected to the corresponding rear terminal slots 112. The front terminal block 12 and the rear terminal block 13 are each composed of three terminals 101, and each terminal 101 is disposed in the corresponding front terminal slot 12 or rear terminal slot 13. In this embodiment, each terminal 101 has an elastic groove 102 at its upper end, and the elastic groove 102 extends vertically. In addition, a positioning part 114 protrudes from the body.

[0044] The storage box 20 is elastic and has a storage cavity 201. The storage cavity 201 has an interference portion 202. In this embodiment, the storage box 20 includes a box body 21 and a cover 22. The box body 21 has the aforementioned storage cavity 201, and the cover 22 is disposed on the box body 21 and seals the storage cavity 201.

[0045] The cable 30 has a first connecting end 31 and a second connecting end 32, which are respectively disposed at both ends of the cable 30. The first connecting end 31 is connected to the connector 10, and the second connecting end 32 extends into the storage box 20. In this embodiment, the first connecting end 31 has three first connecting portions 311, which respectively extend into corresponding connecting holes 113 and are connected and conductively communicated with corresponding terminals 101 of the rear terminal block 112.

[0046] The main shaft 40 is rotatably mounted on the storage box 20. The main shaft 40 includes an integrally formed main body 41 and an adjustment part 42. The main body 41 is located inside the storage cavity 201. A protrusion 411 is provided on the side of the main body 41, which can make interference contact with the interference part 202. The adjustment part 42 extends out of the storage box 20. In this embodiment, a fixing post 412 is provided on the top surface of the main body 41. The adjustment part 42 has a flat plate 421. In addition, a shaft post 413 is provided upwardly at the center of the top surface of the main body 41.

[0047] The PCB board 50 is disposed in the storage cavity 201 and located above the top surface of the main body 41. The PCB board 50 is connected to the second connection end 32 of the wire 30. The bottom surface of the PCB board 50 is provided with two carbon film conductive parts 51, both of which are annular. In this embodiment, the second connection end 32 has three second connection parts 321, wherein two second connection parts 321 are respectively connected to both ends of one carbon film conductive part 51, and the other second connection part 321 is connected to the other carbon film conductive part 51. Furthermore, a through hole 52 is opened in the center of the PCB board 50, and the aforementioned shaft post 413 extends into the through hole 52.

[0048] The adjusting member 60 is disposed between the top surface of the main body 41 and the PCB board 50 and moves with the rotation of the spindle 40. The adjusting member 60 has two contact portions 61, which respectively contact the two carbon film conductive portions 51. In this embodiment, the adjusting member 60 is provided with a fixing hole 62, and the aforementioned fixing post 412 is inserted into the fixing hole 412; and each contact portion 61 is provided with multiple strip grooves 611.

[0049] The key design feature of this invention is that the spindle is rotatably mounted on the storage box, and the adjusting component is positioned between the top surface of the main body and the PCB board and moves with the rotation of the spindle. The two contact parts respectively contact the two carbon film conductive parts. The user can change the resistance value by rotating the spindle to change the path of the current through the carbon film conductive parts. In addition, the storage cavity has an interference part, and the side of the main body has a protrusion. When it is necessary to rotate the spindle to adjust the resistance value, the interference between the protrusion and the interference part will provide a resistance. The existence of this resistance ensures that the connecting wire will not be affected by some minor external contact and the resistance value will not be adjusted, effectively improving the user experience.

[0050] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A connecting wire with adjustable resistance, characterized in that: The device includes a connector, a storage box, a cable, a spindle, a PCB board, and an adjusting component. The storage box has a storage cavity containing an interference portion. The cable has a first connecting end and a second connecting end, which are respectively located at both ends of the cable. The first connecting end is connected to the connector, and the second connecting end extends into the storage box. The spindle is rotatably mounted on the storage box and includes an integrally formed main body and an adjusting component. The main body is located within the storage cavity, and a protrusion on its side surface allows it to interfere with the interference portion. The adjusting component extends outside the storage box. The PCB board is located within the storage cavity and above the top surface of the main body. The PCB board is connected to the second connecting end of the cable and has two annular carbon film conductive portions on its bottom surface. The adjusting component is located between the top surface of the main body and the PCB board and moves with the rotation of the spindle. The adjusting component has two contact portions that contact the two carbon film conductive portions respectively.

2. The adjustable resistance connecting wire according to claim 1, characterized in that: The connector includes a body, a front terminal block, and a rear terminal block. The body has three front terminal slots and three rear terminal slots, and three connection holes are provided on the rear side of the body. Each of the three connection holes is connected to the corresponding rear terminal slot. The front terminal block and the rear terminal block are each composed of three terminals, each terminal being disposed in the corresponding front terminal slot or rear terminal slot. The first connection end has three first connection parts, which extend into the corresponding connection holes and are connected and conductive to the corresponding terminals of the rear terminal block. The second connection end has three second connection parts, wherein two of the second connection parts are connected and conductive to both ends of one carbon film conductive part, and the other second connection part is connected and conductive to another carbon film conductive part.

3. The adjustable resistance connecting wire according to claim 2, characterized in that: Each terminal has an elastic groove at its upper end, which extends vertically.

4. The adjustable resistance connecting wire according to claim 2, characterized in that: The main body is provided with a positioning part.

5. The adjustable resistance connecting wire according to claim 1, characterized in that: A fixing post is protruding from the top surface of the main body, and a fixing hole is provided on the adjusting member, into which the aforementioned fixing post is inserted.

6. The adjustable resistance connecting wire according to claim 1, characterized in that: Each contact part has multiple strip grooves.

7. The adjustable resistance connecting wire according to claim 1, characterized in that: The adjustment section has a flat plate.

8. The adjustable resistance connecting wire according to claim 1, characterized in that: The storage box includes a box body and a lid. The box body has the aforementioned storage cavity, and the lid is disposed on the box body and seals the storage cavity.

9. The adjustable resistance connecting wire according to claim 1, characterized in that: The top surface of the main body has an upwardly protruding shaft, and the center of the PCB board has a through hole, into which the aforementioned shaft extends.

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