Waterproof timing knob switch structure

Abstract

The utility model discloses a waterproof timing knob switch structure, which comprises a surface shell and a knob handle, the knob handle is rotatably connected with the surface shell through a rotating shaft, the surface of the surface shell is provided with a through hole matched with the knob handle, and the outer surface of the surface shell is sequentially provided with a first clamping ring and a second clamping ring around the through hole. A notch is formed in the bottom of the second clamping ring; the knob handle comprises a cover body and a protruding part integrally formed with the outer surface of the cover body, an inner ring of the cover body is attached to the second clamping ring, a clamping block is arranged in the center of the inner surface of the cover body and fixedly connected with one end of the rotating shaft, the rotating shaft penetrates through the through hole, and the protruding part is fixedly connected with the rotating shaft. And a mechanical switch assembly is arranged at the penetrating end of the rotating shaft. By adopting the waterproof timing knob switch structure, the waterproof timing knob switch structure ensures accurate timing, has good waterproofness, is suitable for working scenes such as illumination time control of a medical baking lamp and the like, and has strong practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of knob switches, in particular to a waterproof timing knob switch structure. Background Art

[0002] Medical heating lamps are widely used in clinical practice. Their main function is to promote the absorption of interstitial fluid, promote wound healing, reduce nerve edema, relieve soft tissue damage, etc. Medical heating lamps in the prior art, for example, the utility model patent with publication number CN207970346U discloses a medical infrared therapy lamp, which controls the working time of the therapy lamp and ensures accurate timekeeping through an operation panel and a timing knob switch.

[0003] However, with the development of electronic equipment, medical heating lamps have higher and higher requirements for waterproof performance. The timing knob switch of medical heating lamps does not have a waterproof function, and it is easy to cause damage to the operation panel when exposed to water. Moreover, after the control panel is exposed to water, the performance of the medical heating lamp cannot be restored.

[0004] The gap between the connection part of the knob switch and the housing is an important part of the waterproof design. In the prior art, the utility model patent with publication number CN208478210U discloses a waterproof knob switch and a waterproof communication device. The waterproof knob switch includes a knob handle and an encoder, and the knob handle can rotate freely. The corresponding waterproof effect is achieved by designing a multi-layer sealing ring. However, the timing knob switch cannot adopt the waterproof method of the sealing ring. The sealing ring will increase the friction between the knob handle and the housing, which directly affects the accurate timing of the timing knob switch. Utility Model Content

[0005] The purpose of the utility model is to provide a waterproof timing knob switch structure, which ensures accurate timekeeping while achieving IPX6 waterproof performance. It is suitable for working scenarios such as medical baking lamps for lighting time control, and is also suitable for other electronic devices that require waterproof performance besides medical baking lamps, and has strong practicality.

[0006] To achieve the above object, the utility model provides a waterproof timing knob switch structure, comprising a face shell and a knob handle, wherein the knob handle is rotatably connected to the face shell via a rotating shaft, a through hole matching the knob handle is provided on the surface of the face shell, a first clamping ring and a second clamping ring are sequentially provided on the outer surface of the face shell around the through hole, and a notch is provided at the bottom of the second clamping ring;

[0007] The knob handle includes a cover body and a raised portion integrally formed with the outer surface of the cover body, the inner ring of the cover body is fitted with the second clamping ring, a clamping block is provided at the center position of the inner surface of the cover body, the clamping block is fixedly connected to one end of the rotating shaft, the rotating shaft passes through the through hole, and a mechanical switch assembly is provided at the through end of the rotating shaft.

[0008] Preferably, the centers of the through hole, the first clamping ring and the second clamping ring coincide with each other, and the diameters of the through hole, the first clamping ring and the second clamping ring increase sequentially.

[0009] Preferably, the outer ring of the clamping block is provided with a third clamping ring which fits with the first clamping ring.

[0010] Preferably, there are gaps on the fitting surfaces between the first clamping ring and the third clamping ring, and on the fitting surfaces between the second clamping ring and the cover body.

[0011] Preferably, the first clamping ring and the second clamping ring are integrally formed with the face shell, and the height of the first clamping ring is the same as the height of the second clamping ring.

[0012] Preferably, the third clamping ring and the cover body are integrally formed.

[0013] Therefore, the utility model adopts the above-mentioned waterproof timing knob switch structure, which has the following beneficial effects:

[0014] (1) The present invention is provided with a gap to avoid friction between the face shell and the knob handle, thereby ensuring the accuracy of the timekeeping.

[0015] (2) The utility model is provided with a double-layer card slot structure, and the shell has been tested for waterproof level. It can work normally for more than 10 minutes under high-pressure water jet state, and the waterproof level reaches IPX6. It is suitable for working scenarios such as medical baking lamps for lighting time control. It is also suitable for other electronic devices that require waterproof performance besides medical baking lamps, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of a waterproof timing knob switch structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a face shell of an embodiment of a waterproof timing knob switch structure of the utility model;

[0018] Figure 3 The utility model is a schematic structural diagram of a knob handle of a waterproof timing knob switch structure embodiment.

[0019] Reference numerals

[0020] 1. Surface shell; 2. Knob handle; 3. Through hole; 4. First snap ring; 5. Second snap ring; 6. Notch; 7. Cover body; 8. Raised part; 9. Block; 10. Third snap ring. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] As shown in the figure, a waterproof timing knob switch structure includes a housing 1 and a knob handle 2, and the knob handle 2 is rotatably connected to the housing 1 through a rotating shaft. The surface of the housing 1 is provided with a through hole 3 that matches the knob handle 2, and the outer surface of the housing 1 is provided with a first snap ring 4 and a second snap ring 5 in sequence around the through hole 3, and a notch 6 is provided at the bottom of the second snap ring 5. The knob handle 2 includes a cover body 7 and a protrusion 8 integrally formed with the outer surface of the cover body 7, and a clamping block 9 is provided at the center of the inner surface of the cover body 7, and the clamping block 9 is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft passes through the through hole 3, and a mechanical switch assembly is provided at the through end of the rotating shaft.

[0024] The mechanical switch assembly includes all necessary components for the operation of the mechanical switch, such as a spring, a cam, a moving contact piece, a stationary contact piece, an insulating rod and a terminal, to ensure the normal use of the device. The mechanical switch assembly is arranged on the inner surface of the face shell 1. The outer surface of the face shell 1 forms a double-layer card slot structure through the first clamp ring 4 and the second clamp ring 5. The second clamp ring 5 blocks most of the splashing water from entering the through hole 3. When the flow rate of the spray water is too large, a small amount of spray water or splashing water may enter the inner side of the second clamp ring 5. At this time, the spray water or splashing water will automatically flow out along the outer side of the first clamp ring 4 and toward the notch 6 under the influence of gravity. The spray water or splashing water on the outer surface of the face shell 1 is blocked from entering the inner surface of the face shell 1 through the through hole 3, so as to prevent the electronic components on the inner surface of the face shell 1 from failing due to water immersion, thereby achieving excellent waterproof performance.

[0025] The first snap ring 4 and the second snap ring 5 are both integrally formed with the face shell 1, and the height of the first snap ring 4 is the same as that of the second snap ring 5. The centers of the through hole 3, the first snap ring 4, and the second snap ring 5 coincide with each other, and the diameters of the through hole 3, the first snap ring 4, and the second snap ring 5 increase successively. The inner ring of the cover body 7 fits with the second snap ring 5, and the outer ring of the clamping block 9 is provided with a third snap ring 10 that fits with the first snap ring 4. There are gaps between the fitting surfaces of the first snap ring 4 and the third snap ring 10, and between the second snap ring 5 and the cover body 7, to avoid friction between the face shell 1 and the knob handle 2, thereby ensuring the accuracy of the travel time.

[0026] In this embodiment, the face shell 1, the knob handle 2 and the mechanical switch assembly are installed on the operation panel of the medical heating lamp. The face shell 1 is kept in a vertical position or the vertical tilt angle is kept in the range of 0-45° to ensure that the notch 6 is set toward the ground. Start the medical heating lamp, manually rotate the protrusion 8 to the specified angle, and set the working time of the medical heating lamp to 10 minutes. At the same time, the high-pressure jet water flow continuously sprays the outer surface of the face shell 1, and the medical heating lamp always maintains a normal working state; at the same time, a timer is used to time the irradiation time of the medical heating lamp, and the medical heating lamp turns off after 10 minutes, and the timekeeping is accurate.

[0027] Therefore, the utility model adopts the above-mentioned waterproof timing knob switch structure to ensure accurate timekeeping while achieving IPX6 waterproof performance. It is suitable for working scenarios such as medical baking lamps for lighting time control, and is also suitable for other electronic devices that require waterproof performance besides medical baking lamps, and has strong practicality.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A waterproof timing knob switch structure, characterized in that: It comprises a face shell and a knob handle, wherein the knob handle is rotatably connected to the face shell via a rotating shaft, a through hole matching with the knob handle is arranged on the surface of the face shell, a first clamping ring and a second clamping ring are arranged in sequence on the outer surface of the face shell around the through hole, and a notch is arranged at the bottom of the second clamping ring; The knob handle includes a cover body and a raised portion integrally formed with the outer surface of the cover body, the inner ring of the cover body is fitted with the second clamping ring, a clamping block is provided at the center position of the inner surface of the cover body, the clamping block is fixedly connected to one end of the rotating shaft, the other end of the rotating shaft passes through the through hole, and a mechanical switch assembly is provided at the through end of the rotating shaft.

2. A waterproof timing knob switch structure according to claim 1, characterized in that: The centers of the through hole, the first clamping ring and the second clamping ring coincide with each other, and the diameters of the through hole, the first clamping ring and the second clamping ring increase sequentially.

3. A waterproof timing knob switch structure according to claim 2, characterized in that: The outer ring of the clamping block is provided with a third clamping ring which fits with the first clamping ring.

4. A waterproof timing knob switch structure according to claim 3, characterized in that: There are gaps between the fitting surfaces of the first clamping ring and the third clamping ring and between the second clamping ring and the cover body.

5. A waterproof timing knob switch structure according to claim 4, characterized in that: The first clamping ring and the second clamping ring are both integrally formed with the face shell, and the height of the first clamping ring is the same as the height of the second clamping ring.

6. A waterproof timing knob switch structure according to claim 5, characterized in that: The third clamping ring and the cover body are integrally formed.

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