Rotary switch, electric heater and fan

Abstract

The utility model provides a rotary switch, an electric heater and a fan, the rotary switch comprises a cover plate and a rotating disc, the cover plate is provided with an accommodating cavity, the rotating disc can be arranged in the accommodating cavity in a manner of rotating around the axis of the rotating disc, the accommodating cavity comprises an inner circumferential surface surrounding the rotating disc, and the rotating disc is arranged in the accommodating cavity. The inner circumferential face comprises a plurality of concave faces distributed in the circumferential direction of the rotary disc, and every two adjacent concave faces are in smooth transition. A sliding block and a driving part are arranged on the rotating disc, and when the rotating disc rotates relative to the cover plate, the driving part enables the sliding block to stretch into different concave surfaces so as to limit the rotating disc, so that the technical problems that in the prior art, the number of production steps is large, and the production efficiency is low can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary switches, and in particular relates to a rotary switch, an electric heater and a fan. Background Art

[0002] Rotary switches are common control components for household appliances such as electric heaters and fans. These switches have numerous parts, and the complex assembly process often requires longer time, more labor, and more complex equipment, increasing production costs. This includes direct material and labor costs, as well as indirect equipment depreciation, maintenance, and support costs. This leads to low production efficiency, as the complex assembly process increases the time required for each component, reducing production efficiency and capacity. On production lines with long cycle times, this can result in reduced output and longer delivery times.

[0003] How to reduce the number of production steps and improve the effectiveness efficiency is a technical problem that needs to be solved urgently. Utility Model Content

[0004] Therefore, the utility model provides a rotary switch, an electric heater and a fan, which can solve the technical problems of the prior art such as multiple production steps and low production efficiency.

[0005] The utility model provides a rotary switch, comprising a cover plate and a turntable, wherein the cover plate is provided with an accommodating cavity, the turntable is arranged in the accommodating cavity and can rotate around its own axis, the accommodating cavity comprises an inner circumferential surface surrounding the turntable, the inner circumferential surface comprises a plurality of concave surfaces distributed along the circumference of the turntable, and two adjacent concave surfaces have a smooth transition; a slider and a driving member are provided on the turntable, and when the turntable rotates relative to the cover plate, the driving member causes the slider to extend into different concave surfaces to limit the turntable.

[0006] In some embodiments, the turntable is provided with a receiving groove, the opening of the receiving groove faces the inner circumferential surface, and the slider can slide in the receiving groove in a direction close to or away from the inner circumferential surface.

[0007] In some embodiments, the driving member is a top spring disposed in the accommodating groove, and the top spring has a force that keeps the sliding block in contact with the inner circumferential surface at all times.

[0008] In some embodiments, the accommodating groove is a through hole that penetrates the turntable along the radial direction of the turntable, and there are two sliders, which are respectively arranged at both ends of the spring.

[0009] In some embodiments, the through hole is a circular hole, and the axis of the through hole intersects with the axis of the turntable.

[0010] In some embodiments, the number of the plurality of recessed surfaces is an even number and is evenly distributed.

[0011] In some embodiments, the slider includes a convex spherical surface facing the inner circumferential surface.

[0012] In some embodiments, the accommodating cavity includes a bottom surface connected to the inner circumferential surface, and the turntable includes an operating surface facing away from the bottom surface.

[0013] The utility model also provides an electric heater, comprising the rotary switch.

[0014] The utility model provides a fan, comprising the rotary switch.

[0015] The utility model provides a driving member on the turntable on the inner circumferential surface of the accommodating cavity on the cover plate to drive the limit block, so that the limit block can extend into the corresponding recessed surface to limit the turntable circumferentially (circumferentially of the turntable). Compared with the prior art in which the driving member and the limit block are provided on the turntable, the present application only requires one driving member, which reduces the number of parts, shortens the assembly process, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0017] Figure 1 This is an exploded view of a rotary switch according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the appearance of a rotary switch according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the rotary switch according to an embodiment of the present invention along the axial direction of the rotating shaft;

[0020] Figure 4 This is a radial schematic diagram of the rotary switch according to an embodiment of the present invention along the rotation axis;

[0021] Figure 5 This is an embodiment of the utility model Figure 4 Middle AA section view;

[0022] Figure 6 This is an embodiment of the utility model Figure 4 Schematic diagram after removing the top spring;

[0023] Figure 7 This is an embodiment of the utility model Figure 4 Schematic diagram after removing the turntable and shaft;

[0024] Figure 8 This is a schematic diagram of the relationship between the turntable and the cover plate of the prior art;

[0025] The accompanying drawings are:

[0026] 1. Cover plate; 101. Accommodating cavity; 102. Inner circumference; 103. Concave surface; 104. Convex arc surface; 2. Turntable; 201. Outer circumference; 3. Slider; 4. Through hole; 5. Top spring; 6. Rotating shaft; 701. Spring; 702. Wire-retaining spring; 703. Circular auxiliary static piece; 704. Moving piece; 705. Shift lens; 706. Semicircular static piece; 707. Wire-retaining spring folded edge; 708. Base. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0029] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "upper" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both the "above" and "below" orientations. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0030] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0031] The utility model provides a rotary switch, such as Figure 1-7 As shown, it includes a cover plate 1 and a turntable 2, the cover plate 1 is provided with a accommodating cavity 101, the turntable 2 is arranged in the accommodating cavity 101 and can rotate around its own axis, the accommodating cavity 101 includes an inner circumferential surface 102 surrounding the turntable 2, the inner circumferential surface 102 includes a plurality of recessed surfaces 103 distributed along the circumference of the turntable 2, and the transition between two adjacent recessed surfaces 103 is smooth; a slider 3 and a driving member are provided on the turntable 2, and when the turntable 2 rotates relative to the cover plate 1, the driving member causes the slider 3 to extend into different recessed surfaces 103 to limit the turntable 2.

[0032] The slide block 3 extends into different recessed surfaces 103 to place the rotary switch in different gear positions.

[0033] Compared with the existing technology ( Figure 8) in which the slider 3 is set on the cover plate 1, the recessed surface 103 is set on the turntable 2, and the two sliders 3 are controlled by two springs. In contrast, the present application sets the recessed surface 103 on the cover plate 1 and drives the slider 3 with only one driving member, so that the slider 3 can penetrate into different recessed surfaces 103 to limit the turntable 2; after the slider 3 extends into the recessed surface 103, the turntable 2 is restricted from rotating. Specifically, when the turntable 2 rotates, the slider 3 slides from the recessed surface 103 into the receiving groove. When the slider 3 slides to the maximum depth in the receiving groove, the turntable 2 continues to rotate, and the driving member can make the slider 3 extend into the recessed surface 103 again. When the turntable 2 no longer rotates actively, the slider 3 restricts the rotation of the turntable 2 within the recessed surface 103, so that the turntable can stably stop at a preset position. This saves the number of components for driving the slider 3, shortens the assembly process, and improves production efficiency.

[0034] In addition, the slider 3 rotates with the turntable 2, and the recessed surfaces 103 are arranged around the turntable 2. When the number of recessed surfaces 103 is the same, the distance between two adjacent recessed surfaces 103 is larger, and the transition between two adjacent recessed surfaces 103 is smoother, so that the force acting on the turntable 2 to rotate is smaller, and the probability of the shaft 6 driving the turntable 2 to rotate breaking is reduced.

[0035] A limit key is provided on the rotating shaft 6, and the rotating shaft 6 and the turntable 2 are circumferentially limited by the key.

[0036] like Figure 1 As shown, the rotary switch further includes a spring 701 , a wire-binding spring 702 , a circular auxiliary static piece 703 , a moving piece 704 , a gear lens 705 , a semicircular static piece 706 , a wire-binding spring fold 707 , and a base 708 .

[0037] Preferably, Figure 6 The turntable 2 is provided with a receiving groove, the opening of which faces the inner circumferential surface 102 , and the slider 3 can slide in the receiving groove in a direction close to or away from the inner circumferential surface 102 .

[0038] The slider 3 can slide within the receiving groove in a direction approaching or away from the inner circumferential surface 102 to contact different recessed surfaces 103. Through the above arrangement, the slider 3 is disposed within the turntable 2, and the receiving groove guides the movement of the slider 3, ensuring that the slider 3 can stably contact different recessed surfaces 103, thereby improving the stability of the rotary switch.

[0039] Preferably, Figure 5 As shown, the driving member is a top spring 5 provided in the accommodating groove, and the top spring 5 has a force that keeps the slider 3 in contact with the inner peripheral surface 102 at all times.

[0040] The driving member is preferably a top spring 5, which stores elastic potential energy by being squeezed and applies force to the slider 3, so that the slider 3 can always be in contact with the inner peripheral surface 102. The structure is simple and easy to produce.

[0041] Preferably, Figure 5 As shown, the accommodating groove is a through hole 4 that penetrates the turntable 2 along the radial direction of the turntable 2 , and there are two sliders 3 , which are respectively arranged at the two ends of the top spring 5 .

[0042] In the prior art, two spheres are placed on the cover plate, each of which is applied with a spring. A recessed surface is provided on the outer circumference of the turntable, with both spheres in contact with the outer circumference. This requires numerous installation steps, and both the spring and the spheres must be installed from a limited cavity, requiring manual installation, resulting in low efficiency and a low yield rate.

[0043] The present application only requires one top spring 5 to control both sliders 3, reducing the number of parts and the assembly process, thus saving costs. Since a slider 3 is located at each end of a top spring 5, the forces acting on each slider 3 are identical, improving the smoothness and balance of the rotary switch during rotation. During installation, the top spring 5 and slider 3 are first installed in the through hole 4, and then the turntable 2 is placed in the accommodating cavity 101. This allows for a larger installation space for the top spring 5 and slider 3, facilitating automated installation.

[0044] Preferably, Figure 4 As shown, the through hole 4 is a circular hole, and the axis of the through hole 4 intersects with the axis of the turntable 2 .

[0045] The through hole 4 is a circular hole for easy processing; the axis of the through hole 4 intersects with the axis of the turntable 2, so that the directions of the forces acting on the two sliders 3 are completely opposite, thereby improving the stability of the force when the rotary switch rotates.

[0046] Preferably, Figure 7 As shown, the number of the plurality of recessed surfaces 103 is an even number and is evenly distributed.

[0047] The number of the recessed surfaces 103 is even and evenly distributed, so that the two sliders 3 can simultaneously extend into the corresponding recessed surfaces 103 , making it easier to stop the turntable 2 at a preset gear position, thereby improving the controllability of the rotary switch.

[0048] When the cover plate 1 moves, it can be moved by a robotic arm. Specifically, the two struts of the robotic arm extend into the accommodating cavity 101. The two struts move away from each other and penetrate into two radially corresponding recessed surfaces 103. The two struts are more stable in the recessed surfaces 103, thereby improving the stability of movement.

[0049] Furthermore, the number of the concave surfaces 103 is 8, forming a plum blossom shape.

[0050] Preferably, Figure 5 As shown, the slider 3 includes a convex spherical surface facing the inner circumferential surface 102 .

[0051] The side of the slider 3 facing the inner circumferential surface 102 is a convex spherical surface, which facilitates the slider 3 to slide between different concave surfaces 103, improving the smooth rotation of the turntable 2 and saving manpower. Furthermore, the slider 3 is a spherical shape, which not only facilitates sliding but also rolls, further reducing friction and reducing the resistance to the rotation of the turntable 2.

[0052] Furthermore, the outer circumference 201 of the turntable 2 is circular. Convex curved surfaces 104 facing the outer circumference 201 are formed between two adjacent concave surfaces 103. The outer circumference 201 is in sliding contact with all of the convex curved surfaces 104. This sliding contact between the outer circumference 201 and all of the convex curved surfaces 104 effectively limits the turntable 2 in the radial direction, preventing radial movement and improving the rotational stability of the turntable 2.

[0053] Preferably, Figure 5 As shown, the accommodating cavity 101 includes a bottom surface connected to the inner circumferential surface 102 , and the turntable 2 includes an operating surface facing away from the bottom surface.

[0054] The operating surface is preferably a plane, and the operating surface is sucked by a suction cup and then the turntable 2 is moved for assembly, thereby realizing automated assembly.

[0055] The utility model also provides an electric heater, comprising the rotary switch.

[0056] The utility model also provides a fan, comprising the rotary switch.

[0057] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. Such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A rotary switch, comprising a cover plate (1) and a rotary disk (2), wherein the cover plate (1) is provided with a receiving cavity (101), and the rotary disk (2) is arranged in the receiving cavity (101) so as to be rotatable around its own axis, characterized in that: The accommodating cavity (101) includes an inner circumferential surface (102) surrounding the turntable (2), and the inner circumferential surface (102) includes a plurality of recessed surfaces (103) distributed along the circumference of the turntable (2), and two adjacent recessed surfaces (103) have a smooth transition; a slider (3) and a driving member are provided on the turntable (2), and when the turntable (2) rotates relative to the cover plate (1), the driving member causes the slider (3) to extend into different recessed surfaces (103) to limit the position of the turntable (2).

2. The rotary switch according to claim 1, wherein: The turntable (2) is provided with a receiving groove, the opening of which faces the inner peripheral surface (102), and the slider (3) can slide in the receiving groove in a direction approaching or away from the inner peripheral surface (102).

3. The rotary switch according to claim 2, wherein: The driving member is a top spring (5) arranged in the accommodating groove, and the top spring (5) has an acting force that causes the slider (3) to always be in contact with the inner peripheral surface (102).

4. The rotary switch according to claim 3, wherein: The accommodating groove is a through hole (4) that penetrates the turntable (2) along the radial direction of the turntable (2). There are two sliders (3), and the two sliders (3) are respectively arranged at the two ends of the top spring (5).

5. The rotary switch according to claim 4, characterized in that The through hole (4) is a circular hole, and the axis of the through hole (4) intersects with the axis of the turntable (2).

6. The rotary switch according to claim 5, wherein: The number of the plurality of recessed surfaces (103) is an even number and is evenly distributed.

7. The rotary switch according to claim 1, wherein: The slider (3) comprises a convex spherical surface facing the inner peripheral surface (102).

8. The rotary switch according to any one of claims 1 to 7, characterized in that: The accommodating cavity (101) includes a bottom surface connected to the inner peripheral surface (102), and the turntable (2) includes an operating surface facing away from the bottom surface.

9. An electric heater, characterized in that: The rotary switch comprises the rotary switch according to any one of claims 1 to 8.

10. A fan, characterized in that: The rotary switch comprises the rotary switch according to any one of claims 1 to 8.

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