Waterproof knob

Abstract

The utility model discloses a waterproof knob, which comprises a base, a circuit board arranged in the base, a hollow encoder arranged on the circuit board, a knob buckled with the outer ring of the hollow encoder, an inner bracket buckled with the inner ring of the hollow encoder, a display screen arranged at the top of the inner bracket, and a transparent cover plate arranged at the top of the knob, the display screen is electrically connected with the circuit board; the base is provided with a water retaining ring extending upwards, the axis of the hollow encoder is coaxial with the axis of the water retaining ring, the outer wall of the water retaining ring is sleeved with a sealing ring, the section of the sealing ring is of a U-shaped structure, the knob is provided with a light guide ring, the water retaining ring is sleeved with the light guide ring, and the bottom of the light guide ring abuts against the top of the sealing ring. According to the waterproof knob provided by the utility model, water is prevented from permeating into the base through a gap between the knob and the display screen and a gap between the knob and the base, so that a waterproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of knobs and buttons, in particular to a waterproof knob. Background Art

[0002] In the base of a heating kettle or health kettle, a knob is usually set on an encoder to control the heating temperature. When the knob is turned clockwise, the set heating temperature is increased; when the knob is turned counterclockwise, the set heating temperature is decreased. A small number of knobs are also equipped with a display screen to display the set temperature. However, in actual use, water can easily penetrate into the base through the gap between the display screen and the knob, and the gap between the knob and the base, thereby damaging the circuit board in the base, and more seriously causing leakage, posing a major safety hazard.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a waterproof knob, aiming to solve the technical problem of water seeping into the base through the gap.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A waterproof knob comprises a base and a circuit board arranged in the base, and also comprises a hollow encoder arranged on the circuit board, a knob buckled with the outer ring of the hollow encoder, an inner bracket buckled with the inner ring of the hollow encoder, a display screen arranged on the top of the inner bracket, and a transparent cover plate arranged on the top of the knob; the display screen is electrically connected to the circuit board; a water retaining ring extending upward is arranged on the base, and the axis center line of the hollow encoder is coaxial with the axis center line of the water retaining ring, a sealing ring is sleeved on the outer wall of the water retaining ring, and the cross section of the sealing ring is a U-shaped structure; a light guide ring is arranged on the knob, and the light guide ring is sleeved on the water retaining ring, and the bottom of the light guide ring abuts against the top of the sealing ring.

[0007] Furthermore, a step is provided on the top of the knob, and a transparent cover is provided on the step.

[0008] Furthermore, the top of the transparent cover is flush with the top of the knob.

[0009] Furthermore, the knob includes a rotating part and a first buckling part, a plurality of connecting blocks are provided between the rotating part and the first buckling part, the light guide ring is provided between the rotating part and the first buckling part, the inner wall of the rotating part is provided with a first step part, and the light guide ring is provided with a second step part matching the first step part.

[0010] Furthermore, a plurality of guide ridges are provided on the inner side of the first buckling portion, and a guide groove matching the guide ridges is provided on the outer ring of the hollow encoder; a plurality of first buckles are provided on the first buckling portion, and a first groove buckled with the first buckles is provided on the outer ring of the hollow encoder.

[0011] Furthermore, a plurality of protrusions arranged in a circular array are provided at the bottom of the first buckling portion.

[0012] Furthermore, the inner bracket is provided with a second buckling portion, the second buckling portion is provided with a positioning groove, and the inner ring of the hollow encoder is provided with a positioning convex strip matching the positioning groove; the second buckling portion is provided with a plurality of second buckles, and the inner ring of the hollow encoder is provided with a second groove buckled with the second buckles.

[0013] Furthermore, the top of the water retaining ring is provided with a chamfer.

[0014] Beneficial effects: The waterproof knob provided by the utility model is achieved by buckling the knob onto the outer ring of the hollow encoder, buckling the inner bracket onto the inner ring of the hollow encoder, and providing a transparent cover plate on the top of the knob to enclose the display screen and the inner bracket in the knob, thereby preventing water from entering the knob through the gap between the display screen and the knob; and the outer wall of the water retaining ring is provided with a sealing ring with a U-shaped cross-section, and the sealing ring is elastic, thereby ensuring that the light guide ring is always in contact with the sealing ring, thereby preventing water from seeping into the base through the gap between the knob and the base, thereby achieving a waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a side sectional view of a waterproof knob.

[0016] Figure 2 This is a structural diagram of a waterproof knob provided by the utility model.

[0017] Figure 3 The utility model is an exploded view of a waterproof knob.

[0018] Figure 4 This is a structural diagram of a knob in a waterproof knob provided by the utility model.

[0019] Figure 5 This is a structural diagram of an inner bracket in a waterproof knob provided by the utility model.

[0020] Figure 6 This is a structural diagram of a hollow encoder in a waterproof knob provided by the utility model.

[0021] Explanation of the main component symbols: base 1, water retaining ring 11, chamfer 12, circuit board 2, hollow encoder 3, guide groove 31, first groove 32, positioning ridge 33, second groove 34, knob 4, step 41, rotating part 42, first step part 421, first buckle part 43, connecting block 44, guide ridge 45, first buckle 46, protrusion 47, inner bracket 5, second buckle part 51, positioning groove 52, second buckle 53, display screen 6, transparent cover 7, sealing ring 8, light guide ring 9. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6 The utility model provides a waterproof knob, comprising a base 1, a circuit board 2 arranged in the base 1, a hollow encoder 3 arranged on the circuit board 2, a knob 4 buckled with the outer ring of the hollow encoder 3, an inner bracket 5 buckled with the inner ring of the hollow encoder 3, a display screen 6 arranged on the top of the inner bracket 5, and a transparent cover plate 7 arranged on the top of the knob 4; the display screen 6 is electrically connected to the circuit board 2; the base 1 is provided with a water retaining ring 11 extending upward, and the axis of the hollow encoder 3 is coaxial with the axis of the water retaining ring 11, the outer wall of the water retaining ring 11 is sleeved with a sealing ring 8, the cross section of the sealing ring 8 is a U-shaped structure, and the knob 4 is provided with a light guide ring 9, the light guide ring 9 is sleeved on the water retaining ring 11, and its bottom is abutted against the top of the sealing ring 8.

[0024] When in use, the knob 4 is rotated to drive the outer ring of the hollow encoder 3 to rotate, so that the hollow encoder 3 generates a corresponding electrical signal and feeds it back to the circuit board 2 to adjust the set heating temperature; the display screen 6 is used to display the currently set temperature, and the user can see the value displayed on the display screen 6 through the transparent cover 7.

[0025] The knob 4 and the transparent cover plate 7 form a closed area, and the display screen 6 is located in the closed area, which can prevent water from entering the knob 4 through the gap between the display screen 6 and the knob 4; and the sealing ring 8 is sleeved on the outer wall of the water retaining ring 11, and the bottom of the light guide ring 9 abuts against the sealing ring 8, so as to prevent water from penetrating into the base 1 through the gap between the light guide ring 9 and the water retaining ring 11, thereby playing a waterproof role. In addition, when there is an installation error in the connection between the knob 4 and other components, it will cause a certain distance error between the light guide ring 9 and the upper surface of the base 1. Therefore, the cross-section of the sealing ring 8 is set to a U-shaped structure, so that the sealing ring 8 has a certain elasticity, which can ensure that the top of the sealing ring 8 abuts against the bottom of the light guide ring 9, and can prevent water from penetrating into the base 1.

[0026] In a preferred embodiment, see Figure 3 A step 41 is provided on the top of the knob 4, and the transparent cover plate 7 is provided on the step 41. The transparent cover plate 7 is fixed on the step 41 by gluing, which can improve the stability of the installation of the transparent cover plate 7 on the one hand, and ensure the sealing between the transparent cover plate 7 and the knob 4 on the other hand.

[0027] In a preferred embodiment, see Figure 1 The top of the transparent cover plate 7 is flush with the top of the knob 4 to prevent the transparent cover plate 7 from being lower than the top of the knob 4 so that water accumulates on the top of the transparent cover plate 7 and to prevent the transparent cover plate 7 from protruding out of the knob 4 and affecting the operating feel.

[0028] In a preferred embodiment, see Figure 1 The knob 4 includes a rotating portion 42 and a first buckling portion 43, a plurality of connecting blocks 44 are provided between the rotating portion 42 and the first buckling portion 43, and the light guide ring 9 is provided between the rotating portion 42 and the first buckling portion 43, so that a portion of the light from the display screen 6 can be transmitted through the light guide ring 9 to the bottom of the knob 4 to increase the atmosphere of use; specifically, the light guide ring 9 and the inner wall of the rotating portion 42 are provided with a first step portion 421, and the light guide ring 9 is provided with a second step portion matching the first step portion 421, and the first step portion 421 is fused and fixed to the second step portion to realize that the light guide ring 9 is fixed on the knob 4.

[0029] Further, see Figure 4 , 6, the inner side of the first buckling part 43 is provided with a plurality of guide ridges 45, and the outer ring of the hollow encoder 3 is provided with a guide groove 31 matching the guide ridges 45; the first buckling part 43 is provided with a plurality of first buckles 46, and the outer ring of the hollow encoder 3 is provided with a first groove 32 buckled with the first buckles 46. In this embodiment, the number of the guide ridges 45 and the first buckles 46 is three, and the plurality of guide ridges 45 and the first buckles 46 are arranged at intervals from each other. During installation, the guide ridges 45 are aligned with the guide grooves 31, and the knob 4 is pressed down. Under the cooperation of the guide ridges 45 and the guide grooves 31, the knob 4 moves downward until the three first buckles 46 are buckled in the three first grooves 32 respectively, so that the knob 4 is installed on the hollow encoder 3.

[0030] For further information, see Figure 4 The bottom of the first buckle portion 43 is provided with a plurality of protrusions 47 arranged in a circumferential array. Through the above arrangement, the contact area between the bottom of the knob 4 and the surface of the hollow encoder 3 is reduced, so that the knob 4 rotates more smoothly.

[0031] In the above, see Figure 5 , 6 The inner bracket 5 is provided with a second buckle 51, and a positioning groove 52 is provided on the second buckle 51. The inner ring of the hollow encoder 3 is provided with a positioning convex strip 33 matching the positioning groove 52. The positioning groove 52 and the positioning convex strip 33 are provided to cooperate with each other. On the one hand, it plays a guiding role for the inner bracket 5 during installation. On the other hand, since the inner bracket 5 is in a stationary state relative to the hollow encoder 3, that is, when the knob 4 rotates, the inner bracket 5 and the display screen 6 do not rotate, so that the user can watch the display screen 6. When the positioning convex strip 33 is inserted into the positioning groove 52, the installation direction of the display screen 6 can be ensured to be correct; the second buckle 51 is provided with a plurality of second buckles 53, and the inner ring of the hollow encoder 3 is provided with a second groove 34 buckled with the second buckle 53. In this example, the number of the second buckles 53 is four. During installation, align the positioning groove 52 with the positioning ridge 33 and press down the inner bracket 5. With the cooperation of the positioning groove 52 and the positioning ridge 33, the inner bracket 5 moves downward until the four second buckles 53 are respectively buckled in the four second grooves 34, so that the knob 4 is installed on the hollow encoder 3.

[0032] In a preferred embodiment, see Figure 1 The top of the water retaining ring 11 is provided with a chamfer 12 so that when the knob 4 is installed, the light guide ring 9 is sleeved on the water retaining ring 11.

[0033] It should be understood that before installing the waterproof knob, the light guide ring 9 is fixed to the knob 4 by welding, the display screen 6 is fixed to the inner bracket 5 by welding, and the hollow encoder 3 is fixed to the circuit board 2. During installation, the circuit board 2 is first installed in the base 1, and the sealing ring 8 is sleeved on the water retaining ring 11; then the knob 4 is buckled with the outer ring of the hollow encoder 3, and the bottom of the light guide ring 9 is abutted with the sealing ring 8, the inner bracket 5 is buckled with the inner ring of the hollow encoder 3, and finally the transparent cover plate 7 is fixed to the top of the knob 4 by gluing to wrap the display screen 6 in the knob 4. Under the sealed connection between the transparent cover plate 7 and the knob 4, and the abutment between the sealing ring 8 and the light guide ring 9, water can be prevented from penetrating into the knob 4 and the base 1, thereby achieving a waterproof effect.

[0034] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A waterproof knob, comprising a base and a circuit board arranged in the base, characterized in that: It also includes a hollow encoder arranged on a circuit board, a knob buckled with the outer ring of the hollow encoder, an inner bracket buckled with the inner ring of the hollow encoder, a display screen arranged on the top of the inner bracket, and a transparent cover plate arranged on the top of the knob; the display screen is electrically connected to the circuit board; a water retaining ring extending upward is provided on the base, and the axis of the hollow encoder is coaxial with the axis of the water retaining ring, a sealing ring is provided on the outer wall of the water retaining ring, and the cross-section of the sealing ring is a U-shaped structure, and a light guide ring is provided on the knob, which is sleeved on the water retaining ring, and its bottom abuts against the top of the sealing ring.

2. The waterproof knob according to claim 1, characterized in that: A step is arranged on the top of the knob, and a transparent cover plate is arranged on the step.

3. The waterproof knob according to claim 2, characterized in that: The top of the transparent cover is flush with the top of the knob.

4. The waterproof knob according to claim 1, characterized in that: The knob includes a rotating part and a first buckling part, a plurality of connecting blocks are arranged between the rotating part and the first buckling part, the light guide ring is arranged between the rotating part and the first buckling part, the inner wall of the rotating part is provided with a first step part, and the light guide ring is provided with a second step part matching the first step part.

5. The waterproof knob according to claim 4, characterized in that: The inner side of the first buckling part is provided with a plurality of guide ridges, and the outer ring of the hollow encoder is provided with guide grooves matching the guide ridges; the first buckling part is provided with a plurality of first buckles, and the outer ring of the hollow encoder is provided with a first groove buckled with the first buckles.

6. The waterproof knob according to claim 4, characterized in that: A plurality of protrusions arranged in a circumferential array are provided at the bottom of the first buckling portion.

7. The waterproof knob according to claim 1, characterized in that: The inner bracket is provided with a second buckling portion, the second buckling portion is provided with a positioning groove, and the inner ring of the hollow encoder is provided with a positioning convex strip matching the positioning groove; the second buckling portion is provided with a plurality of second buckles, and the inner ring of the hollow encoder is provided with a second groove buckled with the second buckles.

8. The waterproof knob according to claim 1, characterized in that: The top of the water retaining ring is provided with a chamfer.

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