Wave-shaped anti-pull-out wedge and knob device

Abstract

The application discloses a wave-shaped anti-pulling-out wedge and knob device, which comprises a flexible base plate, the top end of the flexible base plate is provided with a positioning plate connected vertically thereto, the bottom end of the flexible base plate is provided with a row of thorn connected vertically thereto, the front and back surfaces of the flexible base plate are respectively provided with retractable elastic blocks in staggered arrangement, the elastic blocks are hollow, in the initial state, the elastic blocks are convex on the front and back surfaces of the flexible base plate, so that the flexible base plate forms a wave-shaped surface, and in the use state, the elastic blocks are extruded by external force and are concave to the inside of the flexible base plate. The elastic blocks are arranged in staggered arrangement, so that the flexible base plate forms a wave-shaped surface, and after being extruded, the elastic blocks will be deformed to a certain extent to ensure that the front and back surfaces of the flexible base plate are always in close fit with the knob body and the base, thereby preventing the knob body from being pulled out, so as to meet the requirement of large anti-pulling-out.

Description

Technical Field

[0001] This invention relates to the field of knob assembly technology, and more specifically to a wave-shaped anti-pull-out wedge and knob device. Background Technology

[0002] A potentiometer is a current-carrying element with three leads, whose current value can be adjusted according to a certain pattern. A potentiometer includes an output component, a base, brushes, and a knob. The brushes are fixedly mounted on the base, which is housed within the knob. The base is rotatably connected to the output component via a rotating shaft, enabling the brushes to work in conjunction with the output component. When the brushes rotate, the output terminal of the output component receives a current or voltage value proportional to the brush displacement. The base is controlled by the knob to rotate, thereby driving the brushes to rotate; therefore, the output current or voltage of the output component is typically adjusted and controlled by the knob.

[0003] In existing technologies, the knob and the base are usually connected by applying glue. This method requires waiting for the glue to dry before adjustment, which increases the difficulty of controlling the amount of glue. Especially when applying glue to meet the requirements of pull-out resistance, using highly fluid glue is difficult and requires high-quality glue, which can easily lead to rework and low production efficiency.

[0004] Therefore, improving the effective and stable connection between the knob and the base is a problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wave-shaped anti-pull-out wedge and knob device.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] The beneficial effects of this invention are mainly reflected in:

[0008] The wavy anti-pull-out wedge includes an elastic base plate. The top of the elastic base plate has a positioning plate perpendicularly connected to it, and the bottom of the elastic base plate has a barb strip perpendicularly connected to it. A set of retractable elastic blocks are staggered on the front and rear surfaces of the elastic base plate. The interior of the elastic blocks is hollow. In the initial state, the elastic blocks protrude outward from the front and rear surfaces of the elastic base plate, so that the elastic base plate forms a wavy surface. In the use state, the elastic blocks are squeezed by external force and are recessed into the interior of the elastic base plate.

[0009] Preferably, the sidewall of the elastic block has a stepped surface, and the sidewall gradually contracts and extends outward along the stepped surface to form a convex barb shape.

[0010] Preferably, the sidewall of the elastic block is formed with inclined barbs, and the barbs of the elastic blocks located on the same surface of the elastic substrate have the same inclination direction.

[0011] Preferably, the barbs of the elastic block located on the front surface of the elastic substrate are tilted vertically downward, and the barbs of the elastic block located on the rear surface of the elastic substrate are tilted vertically upward.

[0012] Preferably, the barb strip is composed of a group of barbs arranged continuously, and its extension direction is consistent with that of the positioning plate.

[0013] Preferably, a through hole is provided at the connection between the elastic substrate and the positioning plate.

[0014] Preferably, the elastic substrate, elastic block, and cartilage rack are all made of elastic metal material.

[0015] A knob device includes a potentiometer and a knob body. A base is provided at the axis of the potentiometer. The bottom of the knob body is inserted into the base. A wave-shaped anti-pull-out wedge, as described above, is inserted between the base and the knob body. The thickness of the wave-shaped anti-pull-out wedge in the initial state is greater than the gap between the inner wall of the base and the knob body, so that after the knob body is inserted into the base, the elastic blocks on the front and rear surfaces of the wave-shaped anti-pull-out wedge are compressed and contracted inward. The knob body and the base are respectively tightly fitted with the front and rear surfaces of the wave-shaped anti-pull-out wedge.

[0016] Preferably, the inner wall of the base has comb-shaped support blocks, the positioning plate abuts against the top of the support blocks, and the elastic base plate abuts against the support blocks and the knob body respectively.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The staggered setting of the elastic blocks makes the elastic substrate form a wavy surface, so that it will produce a certain deformation when it is squeezed to ensure that the front and rear surfaces of the elastic substrate always maintain a tight fit with the knob body and the base. Furthermore, the compressed elastic blocks will greatly increase the friction of the elastic substrate surface to prevent the knob body from being pulled out, thus meeting the requirements for greater pull-out resistance.

[0019] 2. The barbs with opposite tilts can facilitate the insertion of the elastic base plate and the knob body, and increase the friction on their surfaces to prevent them or the knob body from being pulled out.

[0020] 3. The elastic blocks are evenly distributed on the front and back surfaces of the elastic substrate, which can uniformly increase the surface friction of the elastic substrate, avoid uneven force on the elastic substrate leading to pull-out failure, and ensure long-term pull-out resistance, thus improving the reliability of use.

[0021] 4. The elastic blocks protrude outwards layer by layer, which makes it easy for them to contract when squeezed without damaging their side walls, thus extending their service life and making them less prone to breakage under pressure.

[0022] 5. The positioning plate and the meat rack can define its position, making it easy to position and install;

[0023] 6. The elastic base plate and elastic block are made of elastic steel, which makes them both elastic and strong, making them less prone to damage, and also makes them conductive when connected to the base;

[0024] 7. The wedge is easy to install, requiring no glue or other materials, which reduces costs, is environmentally friendly, and greatly improves installation efficiency;

[0025] 8. The wedge itself is simple to manufacture and can be used as a standard part in devices that require anti-pull-out.

[0026] 9. The comb-shaped support block inside the base can fit tightly against the elastic substrate, and the comb-shaped structure facilitates the insertion of the wedge. Attached Figure Description

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 : Schematic diagram of the wave-shaped anti-pull-out wedge;

[0029] Figure 2 Side view of the wavy anti-pull-out wedge;

[0030] Figure 3 : Schematic diagram of the force on the wave-shaped anti-pull-out wedge;

[0031] Figure 4 Schematic diagram of the working principle of the wave-shaped anti-pull-out wedge;

[0032] Figure 5 : Schematic diagram of the knob device;

[0033] Figure 6 : Explosion diagram of the knob device;

[0034] Figure 7 A partial schematic diagram of the knob device;

[0035] Figure 8 Enlarged schematic diagram of the knob device. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0037] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of 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 present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0038] like Figures 1 to 4 As shown, this invention discloses a wave-shaped anti-pull-out wedge, comprising an elastic base plate 1, a positioning plate 2 perpendicularly connected to the top of the elastic base plate 1, and a barb strip 4 perpendicularly connected to the bottom of the elastic base plate 1. A set of retractable elastic blocks 3 are staggered on the front and rear surfaces of the elastic base plate 1, and the interior of the elastic blocks 3 is hollow. In the initial state, the elastic blocks 3 protrude outward from the front and rear surfaces of the elastic base plate 1, so that the elastic base plate 1 forms a wave-shaped surface. In the use state, the elastic blocks 3 are squeezed by external force and recessed into the interior of the elastic base plate 1.

[0039] like Figure 1 As shown, in this invention, the elastic blocks 3 are arranged in parallel, staggered stripes on the front and rear surfaces of the elastic substrate 1, creating a continuous wave-like pattern between the elastic substrate 1 and the elastic blocks 3. The elastic blocks 3 are evenly distributed on the surface of the elastic substrate 1, maximizing the uniform increase of friction on the elastic substrate 1. This ensures a tight fit between the elastic substrate 1 and other components, preventing localized contact failure and wobbling, and improving the reliability of the pull-out prevention effect of the elastic substrate 1. Of course, in other feasible embodiments, the elastic blocks 3 can be distributed on the front and rear surfaces of the elastic substrate 1 in other ways. Furthermore, the elasticity of the elastic substrate 1 is affected by the spacing and height between adjacent elastic blocks 3, and the spacing and height between the elastic blocks 3 can be adjusted according to specific pull-out prevention requirements.

[0040] Specifically, such as Figure 1As shown, the sidewall of the elastic block 3 has a stepped surface 302, which gradually contracts outward along the stepped surface 302, forming a protruding barb shape. This structure facilitates the elastic block 3 to contract in the opposite direction after being compressed by external force without damaging its sidewall, thus extending its service life and making it less prone to breakage under pressure. In other feasible embodiments, the elastic block 3 can also be any other suitable shape, such as a frustum, prism, pyramid, etc.

[0041] Furthermore, such as Figure 2 As shown, the sidewall of the elastic block 3 is formed with inclined barbs 301, and the barbs 301 of the elastic blocks 3 located on the same surface of the elastic substrate 1 have the same inclination direction. The inclined structure of the barbs 301 gives it a reverse anti-pull-out function, and in the use state, after the elastic block 3 is squeezed and retracted, it will further increase the friction between the front and rear surfaces of the elastic substrate 1, thereby further enhancing its anti-pull-out effect.

[0042] like Figure 2 and Figure 6 As shown, the barbs 301 of the elastic block 3 on the front surface of the elastic substrate 1 are inclined vertically downwards, while the barbs 301 of the elastic block 3 on the rear surface of the elastic substrate 1 are inclined vertically upwards. This structure ensures that the barbs 301 on the rear surface are aligned with the insertion direction of the elastic substrate 1, facilitating insertion. Conversely, the inclination direction of the barbs 301 is opposite to the withdrawal direction of the elastic substrate 1, increasing surface friction and thus increasing resistance to withdrawal. Similarly, the inclination directions of the barbs 301 on the front and rear surfaces of the elastic substrate 1 are opposite, allowing the elastic substrate 1 to smoothly insert into the knob body 6 it abuts against and making it difficult to pull out in the opposite direction.

[0043] The meat spike row 4 in this invention is composed of a continuous arrangement of a group of meat spikes 401, and its extending direction is consistent with that of the positioning plate 2. The arrangement of the meat spike row 4 can further enhance the tight fit between it and the knob body 6.

[0044] The elastic substrate 1, elastic block 3, and barb strip 4 in this invention are all made of elastic metal. Specifically, aluminum alloy is preferred, which ensures that the corrugated anti-pull-out wedge has a certain degree of elasticity while also having a certain degree of rigidity, making it less prone to damage.

[0045] To further enhance the elasticity of the elastic substrate 1, a through hole 201 is provided at the connection between the elastic substrate 1 and the positioning plate 2. The through hole 201 can reduce the rigidity of the elastic substrate 1.

[0046] The wave-shaped anti-pull-out wedge can be produced independently as a standard part. It is widely used in components that require fastening connections, replacing glue. On the one hand, it can greatly improve production efficiency, and on the other hand, it can reduce the use of glue, which is beneficial to environmental protection.

[0047] like Figures 4 to 8 As shown, the present invention also discloses a knob device, including a potentiometer 5 and a knob body 6. A base 501 is provided at the axis of the potentiometer 5. The bottom of the knob body 6 is inserted into the base 501. A wave-shaped anti-pull-out wedge as described above is inserted between the base 501 and the knob body 6. The thickness of the wave-shaped anti-pull-out wedge in the initial state is greater than the gap between the inner wall of the base 501 and the knob body 6, so that after the knob body 6 is inserted into the base 501, the elastic blocks 3 on the front and rear surfaces of the wave-shaped anti-pull-out wedge are squeezed and contracted inward. The knob body 6 and the base 501 are respectively tightly fitted with the front and rear surfaces of the wave-shaped anti-pull-out wedge.

[0048] The elasticity of the elastic block 3 on the surface of the wave-shaped anti-pull-out wedge ensures that it maintains a tight fit with the knob body 6 and the base 501. Furthermore, the barbs 301 arranged in opposite directions further increase the resistance to pulling out the knob body 6 or the wave-shaped anti-pull-out wedge, enhance its anti-pull-out effect, and ensure a tight connection between the knob body 6 and the potentiometer 5.

[0049] Furthermore, the inner wall of the base 501 has comb-shaped support blocks 5011, the positioning plate 2 abuts against the top of the support blocks 5011, and the elastic base plate 1 abuts against the support blocks 5011 and the knob body 6 respectively. The comb-shaped structure of the support blocks 5011 facilitates the insertion of the wave-shaped anti-pull-out wedge.

[0050] like Figure 8 As shown, in a preferred embodiment, the contact surface between the knob body 6 and the wavy anti-pull-out wedge is a flat plane. In other feasible embodiments, the elastic base plate 1 can be a plane or a curved surface, or a cylindrical surface that matches the knob body 6, or other contact surfaces that match the knob body.

[0051] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0052] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wave-shaped anti-pull-out wedge, characterized in that: The system includes an elastic substrate (1), with a positioning plate (2) vertically connected to the top of the elastic substrate (1) and a barb strip (4) vertically connected to the bottom of the substrate. A set of retractable elastic blocks (3) are staggered on the front and rear surfaces of the elastic substrate (1). The interior of the elastic blocks (3) is hollow. In the initial state, the elastic blocks (3) protrude outward from the front and rear surfaces of the elastic substrate (1), making the elastic substrate (1) form a wavy surface. In the use state, the elastic blocks (3) are squeezed by external force and recessed into the interior of the elastic substrate (1). The sidewall of the elastic block (3) forms a stepped surface (302), and its sidewall gradually contracts outward with the stepped surface (302) to form a protruding barb shape. The sidewall of the elastic block (3) forms an inclined barb blade (301), and the inclination direction of the barb blade (301) of the elastic block (3) located on the same surface of the elastic substrate (1) is consistent.

2. The wave-shaped anti-pull-out wedge according to claim 1, characterized in that: The barbs (301) of the elastic block (3) on the front surface of the elastic substrate (1) are tilted vertically downward, and the barbs (301) of the elastic block (3) on the rear surface of the elastic substrate (1) are tilted vertically upward.

3. The wave-shaped anti-pull-out wedge according to claim 2, characterized in that: The barb row (4) is composed of a group of barbs (401) arranged continuously, and its extension direction is consistent with that of the positioning plate (2).

4. The wave-shaped anti-pull-out wedge according to claim 2, characterized in that: A through hole (201) is provided at the connection between the elastic substrate (1) and the positioning plate (2).

5. The wave-shaped anti-pull-out wedge according to claim 1, characterized in that: The elastic substrate (1), elastic block (3) and meat rack (4) are all made of elastic metal material.

6. A knob device, characterized in that: The device includes a potentiometer (5) and a knob body (6). The potentiometer (5) has a base (501) at its axis. The bottom of the knob body (6) is inserted into the base (501). A wave-shaped anti-pull-out wedge as described in any one of claims 1-5 is inserted between the base (501) and the knob body (6). The thickness of the wave-shaped anti-pull-out wedge in its initial state is greater than the gap between the inner wall of the base (501) and the knob body (6), so that after the knob body (6) is inserted into the base (501), the elastic blocks (3) on the front and rear surfaces of the wave-shaped anti-pull-out wedge are squeezed and contracted inward. The knob body (6) and the base (501) are respectively tightly fitted with the front and rear surfaces of the wave-shaped anti-pull-out wedge.

7. The knob device according to claim 6, characterized in that: The inner wall of the base (501) has a comb-shaped support block (5011), the positioning plate (2) abuts against the top of the support block (5011), and the elastic base plate (1) abuts against the support block (5011) and the knob body (6) respectively.

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