Rotary electrical switch

Abstract

The utility model discloses a rotary electrical switch, which relates to the field of electrical switches and comprises a panel, a switch body is fixed in the middle of the lower surface of the panel, and a groove connected with a knob is arranged on the upper surface of the panel. The knob is arranged in the middle of the upper surface of the panel, the knob is movably connected with the switch main body, and a cavity for placing the limiting assembly is formed in the knob; the limiting assembly is arranged in a cavity formed in the rotary knob, and the limiting assembly is used for limiting the rotary knob. The first spring pushes the damping head to be embedded into the damping groove, rotation resistance and clear click feedback are provided, the operation hand feeling is stable, spring buffering can reduce abrasion, the damping head of the movable plate is matched with the limiting column, and accidental rotation can be effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of electrical switch technology, specifically, it relates to a rotary electrical switch. Background Technology

[0002] An electrical control switch, or simply an electrical switch, is a switching device used to switch current. The most typical electrical switch has at least a contact system, namely moving contacts and fixed contacts. The contact system of a conventional electrical switch is housed in a box or enclosure, where the moving and fixed contacts are located. These moving and fixed contacts can be mechanically separated or combined to interrupt or connect the current in a circuit.

[0003] Utility model patent CN220526803U discloses a rotatable controllable electrical switch, comprising: a housing, a first guide post, a guide sleeve, a conductor, and a knob component. The first guide post is disposed inside the housing, and a groove is formed on the outer peripheral wall of the first guide post. The guide sleeve is disposed outside the housing. The conductor is made of metal and passes through the interior of the guide sleeve and is inserted into the interior of the first guide post. One end of the conductor is used for electrical connection. The knob component is rotatably inserted into the housing. By rotating the knob component, the knob component contacts the other end of the conductor, and simultaneously contacts the interior of the groove. The switch is controlled by the knob component rotating on the housing. While the knob component contacts the other end of the conductor, it also contacts the interior of the groove. The knob component will not fall off, and the contact system inside the electrical switch keeps the circuit energized.

[0004] However, existing switches lack a buffer design and elastic components, resulting in significant impact when rotated to the desired position, a stiff operating feel, and wear on the grooves or support rods over time, leading to limit switch failure. Furthermore, when the equipment vibrates, the knob component may experience axial displacement due to inertia or resonance, increasing the contact gap and causing poor circuit contact. The knob component is limited only by the support rod and lacks a locking mechanism; accidental touch of the handle may cause the knob to rotate unintentionally, cutting off the circuit, making it particularly unsuitable for high-frequency operation scenarios. Therefore, this utility model is proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A rotary electrical switch, comprising:

[0007] The panel has a switch body fixed in the middle of its lower surface and a groove for connecting a knob on its upper surface.

[0008] A knob is located in the middle of the upper surface of the panel and is movably connected to the switch body. The knob has a cavity inside for placing a limiting component.

[0009] A limiting component is disposed in a cavity inside the knob, and the limiting component is used to limit the knob.

[0010] Preferably, a dust cover is provided in the middle of the upper surface of the panel. The dust cover is sleeved on the outside of the knob to protect the knob. The dust cover is connected to the panel by a connecting rope.

[0011] Preferably, a groove for placing a knob is provided in the middle of the upper surface of the panel, and a damping groove with an annular structure is provided on the inner wall of the groove.

[0012] Preferably, the knob has an internal slot, the opening of which is located on the outer wall of the lower end of the knob. Linear slots are formed on both sides of the upper end of the slot. A through slot is formed in the middle of the inner top wall of the slot. An annular groove is formed on the inner wall of the through slot. A pressing head is provided in the through slot. An annular stop is fixed on the lower side wall of the pressing head. The annular stop is located in the annular groove and is used to limit the pressing head in the through slot.

[0013] Preferably, the limiting component includes a movable plate disposed in the slot, the movable plate being configured as an L-shaped structure, one end of the movable plate being configured as a damping head adapted to the damping groove, the other end of the movable plate being connected to the inner wall of the slot via a first spring, and both sides of the upper end of the movable plate being connected to sliding pieces via connecting blocks, the sliding pieces being located on both sides of the upper end of the knob, and the connecting blocks being located within the linear slot.

[0014] Preferably, the top of the movable plate is provided with a placement groove, and a limiting post is provided inside the placement groove. The bottom end of the limiting post is connected to the bottom of the placement groove through a second spring, and the top of the limiting post corresponds to the lower opening of the through groove.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The limiting component of this utility model uses a first spring to push the damping head into the damping groove, providing rotational resistance and a clear "click" feedback, resulting in a stable operating feel. The spring buffer reduces wear, and the damping head of the movable plate cooperates with the limiting post to effectively prevent accidental rotation.

[0017] The dust cover of this utility model uses neodymium iron boron magnets to attract the panel, which can prevent dust particles from entering the gap between the knob and the panel, avoiding rotation jamming or contact contamination caused by dust accumulation. The pressing head and the through groove can limit the movable plate, so that the knob can be rotated easily without having to apply force to the slider while rotating. At the same time, pressing down the pressing head can release the limitation of the movable plate, so that the damping head can quickly contact the damping groove and limit the knob.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram showing the connection between the panel and the knob structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the knob structure of this utility model.

[0023] Figure 4 This is a cross-sectional schematic diagram of the panel and knob structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the limiting component structure of this utility model.

[0025] In the diagram: panel 1, switch body 11, dust cover 12, groove 13, damping groove 14, knob 2, empty groove 21, linear groove 22, through groove 23, annular groove 24, pressing head 25, annular stop block 26, limiting component 3, movable plate 31, damping head 32, first spring 33, slider 34, placement groove 35, limiting post 36, second spring 37. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] like Figures 1 to 5 As shown, a rotary electrical switch includes a panel 1, a knob 2, and a limit assembly 3.

[0028] Specifically, a switch body 11 (with built-in conductive contact components, compatible with AC / DC 12-250V circuits) is fixed in the middle of the lower surface of panel 1. A groove 13 for connecting the knob 2 is provided on the upper surface of panel 1. A dust cover 12 is provided in the middle of the upper surface of panel 1. The dust cover 12 is made of transparent polycarbonate, with a ring-shaped neodymium iron boron magnet embedded in its inner edge. The bottom edge of the dust cover 12 is connected to panel 1 by magnetic attraction. The dust cover 12 is sleeved on the outside of the knob 2 to protect the knob 2. The dust cover 12 is connected to panel 1 by a connecting rope. The connecting rope is made of nylon braided wire. One end is fixed to the dust cover 12 by injection molding, and the other end is embedded in the reserved hole of panel 1 to prevent the dust cover 12 from being lost after being removed. A groove 13 for placing the knob 2 is provided in the middle of the upper surface of panel 1. A damping groove 14 with a ring structure is provided on the inner wall of the groove 13. The inner surface of the groove is treated with fine sandblasting.

[0029] Specifically, the knob 2 is located in the middle of the upper surface of the panel 1, and the knob 2 is movably connected to the switch body 11. The knob 2 has a cavity for placing the limiting component 3 inside. The knob 2 has a slot 21 inside, and the opening of the slot 21 is located on the outer wall of the lower end of the knob 2. Linear slots 22 are opened on both sides of the upper end of the slot 21. A through groove 23 is opened in the middle of the inner top wall of the slot 21. An annular groove 24 is opened on the inner wall of the through groove 23. A pressing head 25 is provided in the through groove 23. An annular stop 26 is fixed on the lower side wall of the pressing head 25. The annular stop 26 is located in the annular groove 24 and is used to limit the pressing head 25 in the through groove 23.

[0030] More specifically, the limiting component 3 is disposed within the cavity inside the knob 2. The limiting component 3 is used to limit the knob 2. The limiting component 3 includes a movable plate 31 disposed within the slot 21. The movable plate 31 is configured with an L-shaped structure. One end of the movable plate 31 is configured as a damping head 32. The surface of the damping head 32 is covered with a silicone layer. The damping head 32 is adapted to the damping groove 14. The other end of the movable plate 31 is connected to the inner wall of the slot 21 through a first spring 33. Both sides of the upper end of the movable plate 31 are connected to sliders 34 through connecting blocks. The sliders 34 have an anti-slip texture design. The sliders 34 are located on both sides of the upper end of the knob 2. The connecting blocks are located within the linear slot 22. A placement slot 35 is provided on the top of the movable plate 31. A limiting post 36 is disposed inside the placement slot 35. The bottom end of the limiting post 36 is connected to the placement slot 35 through a second spring 37. The bottom of the groove is connected, and the top of the limiting post 36 corresponds to the lower opening of the through groove 23. The sliding plate 34 drives the movable plate 31 to move, separating the damping head 32 on the movable plate 31 from the damping groove 14, releasing the limit of the knob 2, so that the knob 2 can rotate. When the limiting post 36 on the movable plate 31 moves to the through groove 23, the limiting post 36 is inserted into the through groove 23 under the action of the second spring 37, lifting the pressing head 25, and limiting the movable plate 31 at the same time, so that the knob 2 can be rotated easily. By pressing down the pressing head 25, the limiting post 36 can be separated from the through groove 23, so that the movable plate 31 is reset under the action of the first spring 33 until the damping head 32 on the movable plate 31 contacts the damping groove 14, which plays the role of damping and limiting, limiting the knob 2 and preventing the knob 2 from being accidentally rotated.

[0031] The working principle of this device is as follows: A knob 2 is embedded in the groove 13 on the upper surface of panel 1. The bottom of knob 2 is connected to the contact assembly (existing technology, not shown in the figure) in the switch body 11 to realize the rotational conduction function. The annular damping groove 14 on the inner wall of the groove 13 of panel 1 cooperates with the limiting assembly 3 in knob 2 to form an initial limiting state: the movable plate 31 abuts against the inner wall of the slot 21 through the first spring 33, and the damping head 32 at its end is embedded in the damping groove 14 of panel 1 to provide rotational resistance and positioning; under the action of the second spring 37, the top of the limiting post 36 abuts against the lower opening of the through slot 23, restricting the lateral movement of the movable plate 31 and ensuring that knob 2 can be rotated easily. At the same time, the dust cover 12 is magnetically attached to the outside of knob 2 to prevent dust from entering the gap between knob 2 and panel 1. The connecting rope prevents the dust cover 12 from being lost after opening. When it is necessary to adjust the switch: push the sliders 34 (connecting blocks) on both sides of knob 2 with your fingers. Sliding along the linear slot 22), the movable plate 31 moves laterally against the elastic force of the first spring 33, causing the damping head 32 to disengage from the damping groove 14, thus releasing the rotation restriction of the knob 2. After the damping head 32 is completely disengaged from the damping groove 14, the knob 2 can be rotated freely, and the bottom structure drives the switch body 11 to change the circuit state (such as adjusting the voltage or switching gears). When the limiting post 36 on the movable plate 31 moves to the through groove 23, the limiting post 36 is inserted into the through groove 23 under the action of the second spring 37, lifting the pressing head 25 and limiting the movable plate 31 at the same time, making it easy for the knob 2 to rotate. After rotating to the correct position, the pressing head 25 is pressed down, and the pressing head 25 drives the limiting post 36 to separate from the through groove 23, releasing the limitation of the movable plate 31, so that the movable plate 31 is reset under the action of the first spring 33, until the damping head 32 is embedded in the damping groove 14 again, providing a clear positioning feel, and preventing the knob 2 from being accidentally rotated due to external force.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary electrical switch, characterized in that, include: The panel has a switch body fixed in the middle of its lower surface and a groove for connecting a knob on its upper surface. A knob is located in the middle of the upper surface of the panel and is movably connected to the switch body. The knob has a cavity inside for placing a limiting component. A limiting component is disposed in a cavity inside the knob, and the limiting component is used to limit the knob.

2. A rotary electrical switch according to claim 1, characterized in that, A dust cover is provided in the middle of the upper surface of the panel. The dust cover is sleeved on the outside of the knob to protect the knob. The dust cover is connected to the panel by a connecting rope.

3. A rotary electrical switch according to claim 1, characterized in that, The upper surface of the panel has a groove in the middle for placing the knob, and the inner wall of the groove has a damping groove with an annular structure.

4. A rotary electrical switch according to claim 1, characterized in that, The knob has an internal slot, the opening of which is located on the outer wall of the lower end of the knob. Linear slots are formed on both sides of the upper end of the slot. A through slot is formed in the middle of the inner top wall of the slot. An annular groove is formed on the inner wall of the through slot. A pressing head is provided in the through slot. An annular stop is fixed on the lower side wall of the pressing head. The annular stop is located in the annular groove and is used to limit the pressing head in the through slot.

5. A rotary electrical switch according to claim 1, characterized in that, The limiting component includes a movable plate disposed in the slot. The movable plate is configured with an L-shaped structure. One end of the movable plate is configured as a damping head, which is adapted to the damping groove. The other end of the movable plate is connected to the inner wall of the slot through a first spring. Both sides of the upper end of the movable plate are connected to sliding pieces through connecting blocks. The sliding pieces are located on both sides of the upper end of the knob. The connecting blocks are located in the linear slot.

6. A rotary electrical switch according to claim 5, characterized in that, The top of the movable plate is provided with a placement groove, and a limiting post is provided inside the placement groove. The bottom end of the limiting post is connected to the bottom of the placement groove through a second spring, and the top of the limiting post corresponds to the lower opening of the through groove.

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