CN209822530U

CN209822530U - Waterproof switch for electric heating furnace and electric heating furnace

Info

Publication number: CN209822530U
Application number: CN201921052604.5U
Authority: CN
Inventors: 刘亮成
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-12-20
Anticipated expiration: 2029-07-05

Abstract

The utility model provides a waterproof switch and electric heater for electric heater. The waterproof switch for the electric heating furnace comprises a shell and a panel arranged on the shell, wherein a through hole is formed in the panel, a waterproof sleeve penetrates through the through hole, and a first end which is higher than the upper surface of the panel and is larger than the inner diameter of the through hole is arranged on the waterproof sleeve; a sleeve is arranged in the waterproof sleeve in a penetrating manner, a second end which is higher than the first end and is larger than the inner diameter of the waterproof sleeve is arranged on the sleeve, the sleeve is detachably connected with the shell, and the lower surface of the first end is abutted against the upper surface of the panel; the knob rod of the electric heating furnace switch is arranged in the sleeve in a penetrating way. The utility model provides a waterproof switch for electric heater is when sleeve pipe and casing are connected closely, and the second end on the sleeve pipe can compress tightly waterproof sheathed tube first end on the upper surface of casing, and then can prevent effectively that water from getting into inside the casing from the position department of switch.

Description

Waterproof switch for electric heating furnace and electric heating furnace

Technical Field

The utility model relates to a life electrical apparatus field especially relates to a waterproof switch and electric heater for electric heater.

Background

At present, the switching mechanism of an electric heating furnace (such as an electromagnetic furnace, an electric ceramic furnace or other electric heating furnaces) can often contact liquid due to the use environment, and the liquid can infiltrate through holes, gaps and the like for installing a switch, so that the switch elements, a circuit board and the like are damaged, and the sanitary condition is correspondingly reduced; the existing electric heating furnace switch structure for solving the waterproof problem is complex in structure and high in installation process requirement.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a waterproof switch and electric heater for electric heater to solve the problem that the switch position of electric heater leaks easily among the prior art.

(II) technical scheme

In order to solve the technical problem, the utility model provides a waterproof switch and electric heater for electric heater. The waterproof switch for the electric heating furnace comprises a shell and a panel arranged on the shell, wherein a through hole is formed in the panel, a waterproof sleeve penetrates through the through hole, and a first end which is higher than the upper surface of the panel and larger than the inner diameter of the through hole is arranged on the waterproof sleeve; a sleeve is arranged in the waterproof sleeve in a penetrating manner, a second end which is higher than the first end and is larger than the inner diameter of the waterproof sleeve is arranged on the sleeve, the sleeve is detachably connected with the shell, and the lower surface of the first end is abutted against the upper surface of the panel; the knob rod of the electric heating furnace switch is arranged in the sleeve in a penetrating way.

Further, the waterproof sleeve is made of a flexible material.

Further, the outer diameter of the waterproof sleeve is equal to or larger than the inner diameter of the through hole.

Further, the outer diameter of the sleeve is equal to or greater than the inner diameter of the waterproof sleeve.

Further, the outer diameter of the knob stem is equal to or smaller than the inner diameter of the sleeve.

Further, the sleeve is in threaded connection with the shell, and a threaded hole matched with the sleeve is formed in the shell.

Furthermore, the waterproof switch for the electric heating furnace further comprises a circuit board and a potentiometer, the circuit board is fixedly connected to the shell, the potentiometer is fixedly connected to the circuit board, and the knob rod is fixedly connected with the potentiometer.

According to another aspect of the present invention, the present invention further provides an electric heating furnace, comprising the waterproof switch for an electric heating furnace as mentioned in any one of the above.

(III) advantageous effects

The utility model provides a waterproof switch for electric heater establishes the waterproof sleeve pipe that has the first end that exceeds the panel upper surface at the through-hole endotheca through set up the through-hole on the panel, establishes the sleeve pipe that can dismantle the connection with the casing at the waterproof sleeve pipe endotheca. Therefore, when the sleeve is tightly connected with the shell, the first end of the waterproof sleeve is pressed on the upper surface of the shell by the second end of the sleeve, and water can be effectively prevented from entering the shell from the position of the switch. And because the knob rod is arranged in the sleeve in a penetrating way, the water discharging switch for the electric heating furnace does not influence the normal use of the electric heating furnace switch. In addition, this drainage switch for electric heater still has advantages such as simple structure, reliability height.

Drawings

Fig. 1 is a schematic front view of an electric heating furnace provided by an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken in the direction A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

fig. 4 is a schematic perspective view of an electric heating furnace provided by an embodiment of the present invention.

The reference numbers illustrate:

1. a housing; 2. a panel; 3. a through hole; 4. a waterproof sleeve; 5. a first end; 6. a sleeve; 7. a second end; 8. a knob stem; 9. a threaded hole; 10. a circuit board; 11. a potentiometer; 12. an electric heating furnace.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

With combined reference to fig. 1 to 3, the waterproof switch for the electric heating furnace comprises a shell 1 and a panel 2 arranged on the shell 1, wherein a through hole 3 is formed in the panel 2, a waterproof sleeve 4 penetrates through the through hole 3, and a first end 5 which is higher than the upper surface of the panel 2 and is larger than the inner diameter of the through hole 3 is arranged on the waterproof sleeve 4; a sleeve 6 penetrates through the waterproof sleeve 4, a second end 7 which is higher than the first end 5 and larger than the inner diameter of the waterproof sleeve 4 is arranged on the sleeve 6, the sleeve 6 is detachably connected with the shell 1, and the lower surface of the first end 5 is abutted against the upper surface of the panel 2; a knob rod 8 of the electric heating furnace switch is arranged in the sleeve 6 in a penetrating way.

The utility model provides a waterproof switch for electric heater establishes the waterproof sleeve 6 that has the first end 5 that exceeds the 2 upper surfaces of panel through set up through-hole 3 on panel 2 at through-hole 3 endotheca, establishes the sleeve 6 that can dismantle the connection with casing 1 at waterproof sleeve 6 endotheca. Thus, when the sleeve 6 is tightly connected to the housing 1, the second end 7 of the sleeve 6 presses the first end 5 of the waterproof sleeve 6 against the upper surface of the housing 1, thereby effectively preventing water from entering the interior of the housing 1 from the position of the switch. And because the knob rod 8 is arranged in the sleeve 6 in a penetrating way, the water discharging switch for the electric heating furnace does not influence the normal use of the electric heating furnace. In addition, this drainage switch for electric heater still has advantages such as simple structure, reliability height.

Specifically, a through hole 3 is opened in the panel 2 at a position corresponding to the knob lever 8 of the switch.

A waterproof sleeve 4 penetrates through the through hole 3, wherein a first end 5 which is higher than the upper surface of the panel 2 and has an outer diameter larger than the inner diameter of the through hole 3 is arranged on the waterproof sleeve 4; a sleeve 6 is arranged in the waterproof sleeve 4 in a penetrating way, and a second end 7 which is higher than the first end 5 and has an outer diameter larger than the inner diameter of the waterproof sleeve 4 is arranged on the sleeve 6. Furthermore, the sleeve 6 is detachably connected to the housing 1. Thus, when the sleeve 6 is tightly connected to the housing 1, the lower surface of the second end 7 of the sleeve 6 abuts against the upper surface of the first end 5 of the waterproof sleeve 4, and the lower surface of the first end 5 abuts against the upper surface of the panel 2. Moreover, since the first end 5 is higher than the upper surface of the panel 2, water can be effectively prevented from flowing into the housing 1 from the switch position of the electric heating furnace, and accidents such as short circuit can be prevented.

Further, the sleeve 6 is in threaded connection with the housing 1, and the housing 1 is provided with a threaded hole 9 matched with the sleeve 6. In the present embodiment, the sleeve 6 is connected to the housing 1 by a screw, and correspondingly, a screw hole 9 is provided at a position corresponding to the sleeve 6 on the housing 1. Of course, in other embodiments, the connection mode of the sleeve 6 and the housing 1 can also be a clamping mode or the like.

Further, in the present embodiment, the waterproof sleeve 4 is made of a flexible material. Such as rubber, and the like, and in addition, the rubber and the like also have the advantages of insulation, low cost and the like. Of course, the waterproof sleeve 4 can be made of other soft colloid materials.

Further, the outer diameter of the waterproof sleeve 4 is equal to or larger than the inner diameter of the through hole 3. The purpose of this is that the outer diameter of the waterproof sleeve 4 can be tightly attached to the inner wall of the through-hole 3, preventing water from penetrating into the housing 1 from between the waterproof sleeve 4 and the inner wall of the through-hole 3. Preferably, the outer diameter of the waterproof sleeve 4 is slightly larger than the inner diameter of the through hole 3, and as mentioned above, the waterproof sleeve 4 is made of a flexible material, so that the waterproof sleeve 4 can be pushed into the through hole 3 by a certain amount of elastic deformation of the waterproof sleeve 4.

Still further, the outer diameter of the sleeve 6 is equal to or larger than the inner diameter of the waterproof sleeve 4. The purpose of this is that the sleeve 6 can be a tight fit with the waterproof sleeve 6 to squeeze the waterproof sleeve 4 against the inner wall of the through-hole 3. Preferably, the outer diameter of the sleeve 6 is slightly larger than the inner diameter of the waterproof sleeve 4.

Still further, the outside diameter of the knob stem 8 is equal to or smaller than the inside diameter of the sleeve 6. This is provided to ensure that the rotation of the knob stem 8 is not affected by the sleeve 6. Preferably, the outer diameter of the knob stem 8 is slightly smaller than the inner diameter of the sleeve 6.

Furthermore, the waterproof switch for the electric heating furnace also comprises a circuit board 10 and a potentiometer 11, the circuit board 10 is fixedly connected to the shell 1, the potentiometer 11 is fixedly connected to the circuit board 10, and the knob rod 8 is fixedly connected with the potentiometer 11. In the present embodiment, the circuit board 10 is fixed on the housing 1, the potentiometer 11 is fixedly connected to the circuit board 10, and the knob rod 8 is fixedly connected to the potentiometer 11, i.e., in the present embodiment, the knob rod 8, the potentiometer 11 and the circuit board 10 perform related adjustment functions.

Example two

As shown in fig. 1 and 4, a second embodiment of the present invention further provides an electric heating furnace 12, including the waterproof switch for an electric heating furnace in the first embodiment. The embodiment of the utility model provides an electric heater 12 is through using the waterproof switch for the electric heater in the embodiment one, can prevent effectively that liquid from passing through the switch position and getting into casing 1, has guaranteed electric heater 12's life.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The waterproof switch for the electric heating furnace is characterized by comprising a shell (1) and a panel (2) arranged on the shell (1), wherein a through hole (3) is formed in the panel (2), a waterproof sleeve (4) penetrates through the through hole (3), and a first end (5) which is higher than the upper surface of the panel (2) and is larger than the inner diameter of the through hole (3) is arranged on the waterproof sleeve (4);

a sleeve (6) penetrates through the waterproof sleeve (4), a second end (7) which is higher than the first end (5) and larger than the inner diameter of the waterproof sleeve (4) is arranged on the sleeve (6), the sleeve (6) is detachably connected with the shell (1) and abuts against the lower surface of the first end (5) to the upper surface of the panel (2);

a knob rod (8) of the electric heating furnace switch is arranged in the sleeve (6) in a penetrating way.

2. The waterproof switch for electric heating furnaces as claimed in claim 1, characterized in that the waterproof sleeve (4) is made of a flexible material.

3. The waterproof switch for an electric heating furnace according to claim 2, wherein the outer diameter of the waterproof sleeve (4) is equal to or larger than the inner diameter of the through-hole (3).

4. The waterproof switch for electric heating furnaces as claimed in claim 2, characterized in that the outer diameter of the bushing (6) is equal to or greater than the inner diameter of the waterproof sleeve (4).

5. The waterproof switch for electric heating furnaces as claimed in claim 2, characterized in that the knob rod (8) has an outer diameter equal to or smaller than the inner diameter of the sleeve (6).

6. The waterproof switch for the electric heating furnace according to claim 1, characterized in that the sleeve (6) is in threaded connection with the housing (1), and the housing (1) is provided with a threaded hole (9) which is matched with the sleeve (6).

7. The waterproof switch for the electric heating furnace according to claim 1, further comprising a circuit board (10) and a potentiometer (11), wherein the circuit board is fixedly connected to the housing (1), the potentiometer (11) is fixedly connected to the circuit board (10), and the knob lever (8) is fixedly connected to the potentiometer (11).

8. An electric heating furnace comprising the waterproof switch for an electric heating furnace according to any one of claims 1 to 7.