Potentiometer

Abstract

The utility model discloses a potentiometer which comprises a bottom plate, a protruding part is arranged on one side of the bottom plate, an annular resistor disc and an annular conducting strip are arranged on the top face of the bottom plate, a rotating body is arranged above the bottom plate, and two contacts are arranged at the bottom of the rotating body in a downward protruding mode. The annular conductive sheet and the annular resistor sheet are provided with contacts, the contacts are respectively contacted with the annular conductive sheet and the annular resistor sheet, a first metal piece and a second metal piece are embedded in the protruding part, the first metal piece is connected with the annular resistor sheet, and the second metal piece is connected with the annular conductive sheet. The first metal piece and the second metal piece are embedded into the bottom plate to become a part of the bottom plate structure by adopting an embedding mode in the protruding parts, so that the strength of the first metal piece and the second metal piece is greatly improved, the first metal piece and the second metal piece are not prone to deformation when being connected with the outside, the connecting stability is improved, and meanwhile the connecting effect is improved. The phenomena of false soldering and insufficient soldering are greatly avoided, and poor linearity caused by material shrinkage is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrical components, and particularly to a potentiometer. BACKGROUND

[0002] A potentiometer is a resistance element with three terminals, and the resistance value can be adjusted according to a certain change rule. The potentiometer is usually composed of a resistance body and a movable brush. When the brush moves along the resistance body, the resistance value or voltage related to the displacement is obtained at the output terminal.

[0003] The existing potentiometer terminals are usually in the form of a sheet and extend out of the potentiometer body. Although this structure is convenient to process, the terminals are in the form of a sheet and extend out of the potentiometer body, which causes the terminals to lack rigidity and easily bend or break when connected to external conductors, resulting in a broken circuit of the potentiometer and failure of the entire potentiometer. SUMMARY

[0004] To solve the above problems, the utility model provides a potentiometer, which comprises a bottom plate, a protruding portion is arranged on one side of the bottom plate, a ring-shaped resistance sheet and a ring-shaped conductive sheet are arranged on the top surface of the bottom plate, a rotating body is arranged above the bottom plate, the rotating body is sleeved in the bottom plate and can rotate along the top surface of the bottom plate, two contact points are protruded downward from the bottom of the rotating body, the contact points are in contact with the ring-shaped conductive sheet and the ring-shaped resistance sheet respectively when the rotating body rotates along the top surface of the bottom plate, a first metal piece and a second metal piece are embedded in the protruding portion, the first metal piece is connected with the ring-shaped resistance sheet, and the second metal piece is connected with the ring-shaped conductive sheet.

[0005] Further, the ring-shaped resistance sheet comprises at least two first connecting portions, a second connecting portion extends along the top surface of the bottom plate from the first metal piece, and a first connecting sheet is arranged between the first connecting portion and the second connecting portion and adheres to the top surface of the bottom plate.

[0006] Further, the ring-shaped conductive sheet comprises a first conductive layer and a second conductive layer arranged in a top-down manner, the first conductive layer is arranged on the top surface of the bottom plate, the second conductive layer is arranged on the bottom surface of the bottom plate, the first conductive layer and the second conductive layer are connected through a conductive rod, the contact points are in contact with the first conductive layer when the rotating body rotates along the top surface of the bottom plate, and the second metal piece is connected with the second conductive layer.

[0007] Further, the second conductive layer and the second metal piece are connected through a second connecting sheet, and the second connecting sheet adheres to the bottom surface of the bottom plate.

[0008] Further, the annular resistance sheet and the annular conductive sheet are concentrically arranged, a first through hole is formed at the center position of the annular resistance sheet and the annular conductive sheet of the bottom plate, the rotating body comprises a cylindrical connecting body, and when the rotating body is sleeved in the bottom plate, the connecting body is inserted into the first through hole.

[0009] Further, a reinforcing rib is arranged around the outside of the connecting body, and the contact point is arranged at the bottom of the reinforcing rib.

[0010] Further, a shell is arranged above the rotating body, and the shell and the bottom plate cooperatively clamp and limit the rotating body from the top and the bottom.

[0011] Further, a plurality of clamping hooks and limiting rods are arranged at the bottom of the shell, and a second through hole corresponding to the position of the limiting rod is arranged at the bottom plate, when the shell is arranged above the bottom plate, the clamping hooks are clamped at the bottom of the bottom plate, and the limiting rods are inserted into the second through hole.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The first metal piece and the second metal piece are embedded into the bottom plate to become part of the bottom plate structure, so that the strength of the first metal piece and the second metal piece is greatly improved, the first metal piece and the second metal piece are not easy to deform when connected with the outside world, the stability of the connection is improved, the false welding and virtual welding phenomenon is greatly avoided, and the linear defect caused by material shrinkage is also avoided.

[0014] The additional aspects and advantages of the utility model will be given in the following description part, some of which will become obvious from the following description or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0016] Figure 1 It is the exploded view of the overall structure of the utility model;

[0017] Figure 2 It is the structure schematic view of the bottom plate of the utility model;

[0018] Figure 3 It is the structure schematic view of the rotating body of the utility model;

[0019] Figure 4 The shell structure diagram of the utility model is shown.

[0020] The reference signs and names in the drawing are as follows:

[0021] The bottom plate 100, the convex part 110, the annular resistance sheet 120, the annular conductive sheet 130, the rotating body 200, the contact 210, the first metal piece 140, the second metal piece 150, the first connecting part 121, the second connecting part 141, the first connecting sheet 160, the first conductive layer 131, the second conductive layer 132, the conductive rod 133, the second connecting sheet 170, the first through hole 180, the connecting body 220, the reinforcing rib 230, the shell 300, the clamping hook 310, the limiting rod 320, and the second through hole 190. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] The utility model will be described in more detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or one or more intermediate elements can exist therebetween. When an element is described as "connected to" another element, it can be directly connected to another element, or one or more intermediate elements can exist therebetween.

[0024] In the description of the utility model, it should be explained that the directions such as '' front, back, up, down, left, right '', '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the position relationship indicated by the directions or position relationship shown in the drawing are usually based on the directions or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, under the condition of not making the opposite statement, these directions do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model;The direction '' inside, outside '' refers to the inside and outside relative to the contour of each component itself. In the description of the utility model, it should be explained that the words such as '' first '' and '' second '' are used to limit parts, only for the convenience of distinguishing the corresponding parts, such as no further declaration, the above words do not have special meaning, therefore can not be understood as the limitation of the protection scope of the utility model. In the description of the embodiment of the application, the meaning of '' multiple '' is two and above, unless otherwise explicitly limited.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification are the same as those commonly understood by the person skilled in the art belonging to the technical field of the utility model. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiment, not for limiting the utility model.

[0026] In addition, the technical features involved in different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0027] The preferred embodiment of the utility model will be further described according to the drawings, as shown in Figure 1 A potentiometer, comprising a bottom plate 100, a convex part 110 is arranged on one side of the bottom plate 100, the top surface of the bottom plate 100 is provided with annular resistance sheet 120 and annular conductive sheet 130, the rotating body 200 is arranged above the bottom plate 100, the rotating body 200 is sleeved in the bottom plate 100 and can rotate along the top surface of the bottom plate 100, two contact points 210 are protruded downward at the bottom of the rotating body 200, when the rotating body 200 rotates along the top surface of the bottom plate 100, the contact points 210 respectively form contact with annular conductive sheet 130 and annular resistance sheet 120, the convex part 110 is embedded with first metal piece 140 and second metal piece 150, the first metal piece 140 is connected with annular resistance sheet 120, and the second metal piece 150 is connected with annular conductive sheet 130.

[0028] In the assembly of the present embodiment, the rotating body 200 is first sleeved on the bottom plate 100 so as to be rotatable along the top surface of the bottom plate 100, and the first metal piece 140 is connected with the annular resistance sheet 120 and the second metal piece 150 is connected with the annular conductive sheet 130, then the first metal piece 140 and the second metal piece 150 are respectively externally connected with wires, in the energized state, the current flows through the first metal piece 140, the annular resistance sheet 120, the contact 210 and the rotating body 200, the annular conductive sheet 130 and the second metal piece 150, in this process, the rotating body 200 can be rotated to change the position of the contact 210 on the annular resistance sheet 120, so as to realize different resistance values, thereby achieving the effect of changing the voltage between the first metal piece 140 and the second metal piece 150.

[0029] Compared with the prior art, in the present application, the first metal piece 140 and the second metal piece 150 are embedded in the bottom plate 100 in the embedded manner, so as to become part of the structure of the bottom plate 100, which greatly improves the strength of the first metal piece 140 and the second metal piece 150, so that they are not easy to deform when connected with the outside, improves the stability of the connection, and greatly avoids the false welding and virtual welding phenomenon, and also avoids the linear defect caused by material shrinkage.

[0030] Further to the above embodiment, as shown in Figure 2 The annular resistance sheet 120 includes at least two first connecting portions 121, the first metal piece 140 extends along the top surface of the bottom plate 100 and has a second connecting portion 141, and a first connecting sheet 160 is arranged between the first connecting portion 121 and the second connecting portion 141, the first connecting sheet 160 is attached to the top surface of the bottom plate 100, and the material of the first connecting sheet 160 is a conductor, so that the first connecting sheet 160 is only needed to connect the annular resistance sheet 120 and the first metal piece 140, and the first metal piece 140 does not need to be processed into a strip or other special shape, thereby reducing the processing cost of the first metal piece 140 and simplifying the assembly process of the present application.

[0031] Further to the above embodiment, as shown in Figure 2As shown in the figure, the annular conductive sheet 130 comprises a first conductive layer 131 and a second conductive layer 132 arranged in an up-down manner, the first conductive layer 131 is arranged on the top surface of the bottom plate 100, the second conductive layer 132 is arranged on the bottom surface of the bottom plate 100, the first conductive layer 131 and the second conductive layer 132 are connected through a conductive rod 133, when the rotating body 200 rotates along the top surface of the bottom plate 100, the contact 210 contacts the first conductive layer 131, and the second metal piece 150 is connected with the second conductive layer 132, so that on the bottom plate 100, the first metal piece 140 and the second metal piece 150 are connected with the annular resistance sheet 120 and the annular conductive sheet 130 respectively at different levels, so that the mutual influence caused by the energization of the first metal piece 140 and the second metal piece 150 can be avoided to the maximum extent, and convenience is provided for subsequent processing.

[0032] Further based on the above embodiment, as shown in Figure 2 As shown in the figure, the second conductive layer 132 and the second metal piece 150 are connected through a second connecting sheet 170, the second connecting sheet 170 is attached to the bottom surface of the bottom plate 100, and the material of the second connecting sheet 170 is a conductor, so that the annular conductive sheet 130 and the second metal piece 150 can be connected only by using the second connecting sheet 170, without the need to process the second metal piece 150 into a strip or other special shape, thereby reducing the processing cost of the second metal piece 150 and simplifying the assembly process of the present application.

[0033] Further based on the above embodiment, in combination with Figure 1 and Figure 3 As shown in the figure, the annular resistance sheet 120 and the annular conductive sheet 130 are arranged concentrically, a first through hole 180 is formed at the center position of the annular resistance sheet 120 and the annular conductive sheet 130 of the bottom plate 100, and the rotating body 200 comprises a cylindrical connecting body 220, when the rotating body 200 is sleeved in the bottom plate 100, the connecting body 220 is inserted into the first through hole 180, so that the rotating body 200 rotates along the top surface of the bottom plate 100.

[0034] Further based on the above embodiment, as shown in Figure 3 As shown in the figure, a reinforcing rib 230 is arranged around the outside of the connecting body 220, and the contact 210 is arranged at the bottom of the reinforcing rib 230, so that the reinforcing rib 230 can improve the stability of the contact 210 contacting the annular resistance sheet 120 and the annular conductive sheet 130.

[0035] Further based on the above embodiment, in combination with 1 and Figure 4As shown, a shell 300 is arranged above the rotating body 200, and the shell 300 and the bottom plate 100 cooperate to form clamping and limiting from the top and bottom to the rotating body 200, so that when the rotating body 200 is sleeved in the bottom plate 100 and can rotate along the top surface of the bottom plate 100, the rotating body 200 can be prevented from jumping up and down, and the influence between the annular resistance sheet 120 and the annular conductive sheet 130 can be reduced.

[0036] Further based on the above-mentioned embodiments, in combination with 1 and Figure 4 As shown, a plurality of clamping hooks 310 and limiting rods 320 are arranged at the bottom of the shell 300, and a second through hole 190 corresponding to the position of the limiting rod 320 is arranged on the bottom plate 100, when the shell 300 is installed above the bottom plate 100, the clamping hooks 310 are clamped at the bottom of the bottom plate 100, and the limiting rods 320 are inserted into the second through hole 190, thereby forming clamping and limiting to the rotating body 200.

[0037] The details of the above-mentioned exemplary embodiments, and in the case of not departing from the spirit or basic characteristics of the present application, the present application can be realized in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A potentiometer, characterized by The utility model provides a kind of rotary dial, including bottom plate (100), be provided with protruding part (110) in one side of the bottom plate (100), the top surface of the bottom plate (100) is provided with annular resistance sheet (120) and annular conductive sheet (130), rotary body (200) is provided above the bottom plate (100), the rotary body (200) is sleeved in bottom plate (100) and can rotate along the top surface of bottom plate (100), two contact points (210) are protruded downward in the bottom of the rotary body (200), when the rotary body (200) rotates along the top surface of bottom plate (100), the contact point (210) respectively with annular conductive sheet (130) and annular resistance sheet (120) form contact, the protruding part (110) is embedded with first metal piece (140) and second metal piece (150), the first metal piece (140) is connected with annular resistance sheet (120), and the second metal piece (150) is connected with annular conductive sheet (130).

2. The potentiometer of claim 1, wherein Annular resistance sheet (120) includes at least two first connecting parts (121), and the first metal piece (140) extends along the top surface of bottom plate (100) with second connecting part (141), and first connecting sheet (160) is arranged between the first connecting part (121) and the second connecting part (141), and the first connecting sheet (160) is attached to the top surface of the bottom plate (100).

3. The potentiometer of claim 2, wherein Annular conductive sheet (130) includes first conductive layer (131) and second conductive layer (132) arranged in upper and lower, the first conductive layer (131) is arranged on the top surface of bottom plate (100), and the second conductive layer (132) is arranged on the bottom surface of bottom plate (100), and the first conductive layer (131) and the second conductive layer (132) are connected by conductive rod (133), when the rotary body (200) rotates along the top surface of bottom plate (100), the contact point (210) is contacted with the first conductive layer (131), and the second metal piece (150) is connected with the second conductive layer (132).

4. The potentiometer of claim 3, wherein Second conductive layer (132) and second metal piece (150) are connected by second connecting sheet (170), and the second connecting sheet (170) is attached to the bottom surface of the bottom plate (100).

5. The potentiometer of claim 1, wherein Annular resistance sheet (120) and annular conductive sheet (130) are concentrically arranged, first through hole (180) is formed in the center position of annular resistance sheet (120) and annular conductive sheet (130) of the bottom plate (100), and the rotary body (200) includes cylindrical connecting body (220), when the rotary body (200) is sleeved in bottom plate (100), the connecting body (220) is inserted into first through hole (180).

6. The potentiometer of claim 5, wherein Reinforcing rib (230) is arranged outside the connecting body (220), and the contact point (210) is arranged at the bottom of the reinforcing rib (230).

7. The potentiometer of claim 1, wherein A shell (300) is arranged above the rotating body (200), and the shell (300) and the bottom plate (100) cooperate to form clamping and limiting from the top and bottom to the rotating body (200).

8. The potentiometer of claim 7, wherein A plurality of clamping hooks (310) and limiting rods (320) are arranged at the bottom of the shell (300), and a second through hole (190) corresponding to the position of the limiting rod (320) is arranged at the bottom plate (100), when the shell (300) is arranged above the bottom plate (100), the clamping hooks (310) are clamped at the bottom of the bottom plate (100), and the limiting rods (320) are inserted into the second through hole (190).

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