Knob assembly with sealing function and water heater

Abstract

The present invention provides a knob assembly and a water heater with a sealing function. The knob assembly includes a knob, a display shell and a sealing member. The display shell is provided with a sealing ring, a mounting hole is formed in the middle of the sealing ring, the knob is buckled on the sealing ring, and the knob is connected to the rotating shaft in the display shell through the mounting hole, and the sealing member is arranged between the inner surface of the knob and the outer surface of the sealing ring. The knob assembly and the water heater with a sealing function provided by the present invention use a sealing member to seal the gap between the knob and the display shell, thereby overcoming the problem in the prior art that water vapor enters the interior of the display shell due to the existence of the gap and affects the normal operation of the electrical components. The convex rib and the annular depression can limit the relative position of the sealing member to ensure the reliability of the sealing member, and the silicone rubber material can use elasticity to increase the sealing effect and increase the hand feel of the user.

Description

Technical Field

[0001] The invention relates to the technical field of control button components, in particular to a knob component and a water heater with a sealing function. Background Art

[0002] Most of the gas water heaters with knobs on the market have no seal or poor seal between the knob and the panel, which will cause rainwater to enter the casing after the water heater is exposed to rain and cause damage to the internal components of the casing. If rainwater invades electrical components, it will cause electrical circuit breakage and damage. Summary of the invention

[0003] In order to solve the technical problem of short circuit caused by water vapor infiltrating through the gap between the knob and the panel, a knob assembly and a water heater with sealing function for sealing the gap formed at the knob are provided.

[0004] A knob assembly comprises a knob, a display shell and a sealing member, wherein a sealing ring is arranged on the display shell, a mounting hole is formed in the middle of the sealing ring, the knob is buckled on the sealing ring, and the knob is connected to a rotating shaft in the display shell through the mounting hole, and the sealing member is arranged between the inner surface of the knob and the outer surface of the sealing ring.

[0005] The display shell is formed with an escape groove, the escape groove is arranged on the outer side of the sealing ring, and the end of the knob extends into the escape groove.

[0006] The sealing ring forms a side wall of the avoidance groove.

[0007] The cross section of the sealing ring, the cross section of the inner surface of the knob and the cross section of the mounting hole are all circular, and the axis of the sealing ring, the axis of the knob and the axis of the mounting hole are collinear.

[0008] There is a first distance between the end of the sealing ring and the bottom of the knob, and the size of the sealing element is larger than the first distance.

[0009] There is a second distance between the inner surface of the knob and the outer circumferential surface of the sealing ring, and the size of the sealing member is greater than or equal to the second distance.

[0010] The sealing member is a trumpet-shaped structure, and the trumpet-shaped structure includes a small diameter end and a large diameter end, the small diameter end is sealedly connected to the outer surface of the sealing ring, the large diameter end is sealedly connected to the inner surface of the knob, and the difference between the diameter of the large diameter end and the diameter of the small diameter end is greater than or equal to the second spacing.

[0011] An annular recess is arranged on the outer peripheral surface of the sealing ring, and the small diameter end extends into the annular recess and is sealed and connected with the annular recess.

[0012] A convex rib is arranged at the small diameter end, the cross section of the convex rib is the same as the cross section of the annular recess, and the convex rib extends into the annular recess for sealing connection.

[0013] The material of the sealing element includes silicone rubber, and the sealing element is interference-fitted with the inner surface of the knob, and the sealing element is interference-fitted with the outer surface of the sealing ring.

[0014] The diameter of the small diameter end is smaller than or equal to the diameter of the sealing ring, and the diameter of the large diameter end is larger than or equal to the inner diameter of the knob.

[0015] A water heater comprises the above-mentioned knob assembly.

[0016] The knob assembly and water heater with sealing function provided by the present invention use a seal to seal the gap between the knob and the display shell, thereby overcoming the problem in the prior art that water vapor enters the interior of the display shell due to the existence of the gap and affects the normal operation of the electrical components. The convex rib and the annular recess can limit the relative position of the seal to ensure the reliability of the seal, and the silicone rubber material can use elasticity to increase the sealing effect and at the same time increase the user's hand feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A diagram showing the use status of a knob assembly with a sealing function and a knob assembly of an embodiment of a water heater provided by the present invention;

[0018] Figure 2 for Figure 1 A local schematic diagram of the A;

[0019] Figure 3 for Figure 2 A partial schematic diagram of point B;

[0020] Figure 4 A cross-sectional view of a sealing member of an embodiment of a knob assembly and a water heater with a sealing function provided by the present invention;

[0021] In the figure:

[0022] 1. Knob; 2. Display shell; 3. Seal; 4. Sealing ring; 5. Avoidance groove; 6. Annular depression; 7. Raised rib. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figures 1 to 4The knob assembly shown includes a knob 1, a display shell 2 and a sealing member 3. The display shell 2 is provided with a sealing ring 4, a mounting hole is formed in the middle of the sealing ring 4, the knob 1 is buckled on the sealing ring 4, and the knob 1 is connected to the rotating shaft in the display shell 2 through the mounting hole. The sealing member 3 is arranged between the inner surface of the knob 1 and the outer surface of the sealing ring 4. After the knob 1 is installed on the sealing ring 4, a gap is formed between the inner surface of the knob 1 and the outer surface of the sealing ring 4. The sealing member 3 is arranged at the gap, which can effectively prevent water vapor from entering the interior of the display shell 2, thereby solving the problem of electrical short circuit, open circuit or even damage caused by water vapor entering in the prior art.

[0025] The display housing 2 is formed with an avoidance groove 5, which is arranged on the outer side of the sealing ring 4, and the end of the knob 1 extends into the avoidance groove 5. The avoidance groove 5 is used to avoid the end of the knob 1, thereby ensuring that the knob 1 can be correctly set on the sealing ring 4, and further ensuring the reliable installation of the knob 1.

[0026] The sealing ring 4 forms a side wall of the avoidance groove 5, which reduces the structure of the knob assembly and increases the reliability of the knob assembly.

[0027] The cross section of the sealing ring 4 , the cross section of the inner surface of the knob 1 and the cross section of the mounting hole are all circular, and the axis of the sealing ring 4 , the axis of the knob 1 and the axis of the mounting hole are collinear.

[0028] There is a first distance between the end of the sealing ring 4 and the bottom of the knob 1, and the size of the sealing member 3 is larger than the first distance, so that the sealing member 3 can be reliably sealed with the bottom of the knob 1 and the peripheral side of the sealing ring 4, thereby ensuring the sealing performance of the sealing member 3.

[0029] There is a second distance between the inner surface of the knob 1 and the outer peripheral surface of the sealing ring 4, and the size of the seal 3 is greater than or equal to the second distance, so that the seal 3 can be reliably sealed with the bottom of the knob 1 and the peripheral side of the sealing ring 4, thereby ensuring the sealing performance of the seal 3.

[0030] The sealing member 3 is a trumpet-shaped structure, and the trumpet-shaped structure includes a small diameter end and a large diameter end, the small diameter end is sealedly connected to the outer surface of the sealing ring 4, the large diameter end is sealedly connected to the inner surface of the knob 1, and the difference between the diameter of the large diameter end and the diameter of the small diameter end is greater than or equal to the second spacing.

[0031] An annular recess 6 is provided on the outer circumferential surface of the sealing ring 4, and the small-diameter end extends into the annular recess 6 and is sealedly connected to the annular recess 6, thereby ensuring that the sealing member 3 is reliably arranged between the sealing ring 4 and the knob 1, and when the knob 1 is rotated, the sealing member 3 will not slide relative to the sealing ring 4 along the axis of the knob 1, thereby affecting the sealing effect of the sealing member 3.

[0032] A convex rib 7 is provided at the small diameter end, the cross section of the convex rib 7 is the same as the cross section of the annular recess 6, and the convex rib 7 extends into the annular recess 6 for sealing connection. The cooperation between the convex rib 7 and the annular recess 6 ensures that when the knob 1 is rotated, the convex rib 7 is always inside the annular recess 6, thereby limiting the position of the seal 3.

[0033] The material of the seal 3 includes silicone rubber, and the seal 3 has an interference fit with the inner surface of the knob 1, and the seal 3 has an interference fit with the outer surface of the sealing ring 4. The deformation elastic force of the silicone rubber is used to ensure the effect of the interference fit. At the same time, the elasticity of the silicone rubber can make the knob have a soft feel during the rotation process, thereby increasing the user's feeling of use.

[0034] The diameter of the small diameter end is smaller than or equal to the diameter of the sealing ring 4 , and the diameter of the large diameter end is larger than or equal to the inner diameter of the knob 1 , and the interference fit is achieved by utilizing the deformation elastic force of the silicone rubber.

[0035] A water heater comprises the above-mentioned knob assembly.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A knob assembly, characterized in that: The invention comprises a knob (1), a display shell (2) and a sealing member (3), wherein the display shell (2) is provided with a sealing ring (4), a mounting hole is formed in the middle of the sealing ring (4), the knob (1) is buckled on the sealing ring (4), and the knob (1) is connected to a rotating shaft in the display shell (2) through the mounting hole, the sealing member (3) is arranged between the inner surface of the knob (1) and the outer surface of the sealing ring (4); a second distance is provided between the inner surface of the knob (1) and the outer peripheral surface of the sealing ring (4); the sealing member (3) is a trumpet-shaped structure, and the trumpet-shaped structure comprises a small The sealing ring (4) has a small diameter end and a large diameter end, the small diameter end is sealed to the outer surface of the sealing ring (4), the large diameter end is sealed to the inner surface of the knob (1), and the difference between the diameter of the large diameter end and the diameter of the small diameter end is greater than or equal to the second spacing; an annular recess (6) is provided on the outer peripheral surface of the sealing ring (4), the small diameter end extends into the annular recess (6) and is sealed to the annular recess (6); a convex rib (7) is provided at the small diameter end, the cross section of the convex rib (7) is the same as the cross section of the annular recess (6), and the convex rib (7) extends into the annular recess (6) and is sealed to the annular recess (6).

2. The knob assembly according to claim 1, characterized in that: An escape groove (5) is formed on the display housing (2), the escape groove (5) is arranged on the outside of the sealing ring (4), and the end of the knob (1) extends into the escape groove (5).

3. The knob assembly according to claim 2, characterized in that: The sealing ring (4) forms a side wall of the avoidance groove (5).

4. The knob assembly according to claim 1, characterized in that: The cross section of the sealing ring (4), the cross section of the inner surface of the knob (1) and the cross section of the mounting hole are all circular, and the axis of the sealing ring (4), the axis of the knob (1) and the axis of the mounting hole are collinear.

5. The knob assembly according to claim 4, characterized in that: There is a first distance between the end of the sealing ring (4) and the bottom of the knob (1), and the size of the sealing element (3) is greater than the first distance.

6. The knob assembly according to claim 5, characterized in that: The size of the sealing element (3) is greater than or equal to the second distance.

7. The knob assembly according to claim 1, characterized in that: The material of the sealing member (3) includes silicone rubber, and the sealing member (3) is in interference fit with the inner surface of the knob (1), and the sealing member (3) is in interference fit with the outer surface of the sealing ring (4).

8. The knob assembly according to claim 7, characterized in that: The diameter of the small diameter end is smaller than or equal to the diameter of the sealing ring (4), and the diameter of the large diameter end is larger than or equal to the inner diameter of the knob (1).

9. A water heater, characterized in that: A knob assembly comprising any one of claims 1 to 8.

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