CN111023175B

CN111023175B - Electric heating device

Info

Publication number: CN111023175B
Application number: CN201911393240.1A
Authority: CN
Inventors: 李�杰; 龙剑
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2022-05-17
Anticipated expiration: 2039-12-30
Also published as: CN111023175A

Abstract

The invention discloses an electric heating device, comprising: the electric control box is provided with a first through hole; the cavity assembly comprises a front plate, the front plate is provided with a second through hole, and the second through hole is provided with an inward flange extending in the direction away from the electric control box; the electric control box is connected with the front plate through a self-tapping screw, and the self-tapping screw penetrates through the first through hole and then is connected with the inner flanging through threads. Automatically controlled box and front bezel pass through self tapping screw connection, and the self tapping screw passes behind the first through-hole of automatically controlled box and the inside flanging threaded connection of the second through-hole of front bezel, when needing the maintenance to change the computer board, can directly pull down the self tapping screw back from the front of electrical heating equipment, then take out the computer board, need not unpack the dustcoat apart, make things convenient for after-sale maintenance to change, improve the work efficiency of after-sale maintenance.

Description

Electric heating device

Technical Field

The invention relates to the technical field of household appliances, in particular to electric heating equipment.

Background

At present, heating control of electric heating equipment such as microwave ovens and electric ovens is basically realized through electric control devices. The electric control device comprises a computer board, the computer board mainly comprises a power module, a display module, a knob module and the like, the computer board is generally arranged in an electric control box, and the electric control box is arranged on a front plate of the cavity assembly through screws. Because the structure is unreasonable, when the computer board needs to be maintained after sale, the outer cover on the cavity assembly needs to be disassembled, the electric control box needs to be disassembled, and the computer board needs to be taken down at last, so that the after-sale workload is large, and the working efficiency is low.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the electric heating equipment which can be used for conveniently taking out the computer board and improving the work efficiency of after-sale maintenance.

An electric heating apparatus according to an embodiment of the first aspect of the present invention includes: the electric control box is provided with a first through hole; the cavity assembly comprises a front plate, the front plate is provided with a second through hole, and the second through hole is provided with an inward flange extending in the direction away from the electric control box; the electric control box is connected with the front plate through a self-tapping screw, and the self-tapping screw penetrates through the first through hole and then is connected with the inner flanging through threads.

The electric heating equipment provided by the embodiment of the invention has at least the following beneficial effects: automatically controlled box and front bezel pass through self tapping screw connection, and the self tapping screw passes behind the first through-hole of automatically controlled box and the inside flanging threaded connection of the second through-hole of front bezel, when needing the maintenance to change the computer board, can directly pull down the self tapping screw back from the front of electrical heating equipment, then take out the computer board, need not unpack the dustcoat apart, make things convenient for after-sale maintenance to change, improve the work efficiency of after-sale maintenance.

According to some embodiments of the invention, the electrical control box is provided with a catch, and the front plate has a bayonet fitting with the catch.

According to some embodiments of the invention, the catch comprises a cantilever, a hook portion and a reinforcing plate, the hook portion is arranged at one end of the cantilever, one side of the cantilever faces the lower wall of the bayonet, and the reinforcing plate is arranged on the other side of the cantilever.

According to some embodiments of the invention, a top portion of the reinforcing plate abuts against an upper wall of the bayonet, and an end of the reinforcing plate facing the hook portion is provided with an escape portion that escapes from the bayonet.

According to some embodiments of the invention, the bayonet is provided with a resilient tab crimped against a side of the catch.

According to some embodiments of the invention, the electric control box is provided with a positioning part, the front plate is provided with a positioning hole, and the positioning part is inserted into the positioning hole to realize positioning of the electric control box.

According to some embodiments of the invention, the positioning portion is C-shaped in cross-section.

According to some embodiments of the invention, the electrical control box has a housing cavity housing the head of the self-tapping screw.

According to some embodiments of the invention, the electric heating equipment further comprises an outer cover, the cavity assembly further comprises a liner and a rear plate, the front plate is arranged at the front end of the liner, the rear plate is arranged at the rear end of the liner, the outer cover is covered on the liner, and two ends of the outer cover are respectively connected with the front plate and the rear plate.

According to some embodiments of the invention, the cover is snap-fit to the front plate and the cover is screw-connected to the rear plate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded schematic view of an electrical heating apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of an electrical heating apparatus of an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A shown in FIG. 2;

FIG. 4 is an enlarged view at C shown in FIG. 3;

FIG. 5 is a cross-sectional view B-B shown in FIG. 2;

FIG. 6 is an enlarged view at D shown in FIG. 5;

FIG. 7 is a schematic structural view of the electrical control box shown in FIG. 1;

FIG. 8 is a schematic view of the front plate shown in FIG. 1;

fig. 9 is an enlarged view at E shown in fig. 8.

Reference numerals: an electric heating device 100; a chamber body assembly 101; a front plate 102; an inner container 103; a back plate 104; a housing 105; an electronic control box 106; a door body 107; a second through-hole 108; a positioning hole 109;

a self-tapping screw 201;

a first via 401; inner flange 402; an accommodating cavity 403; a U-shaped spring clip 404; a connecting plate 405; a protrusion 406;

a hook 601; a cantilever 602; a hook 603; a reinforcing plate 604; a bayonet 605; an avoidance portion 606;

a positioning portion 701;

an elastic sheet 901.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 and 2, the electric heating apparatus 100 includes a cavity assembly 101, an outer cover 105, a computer board (not shown in the figure), an electric control box 106 and a door body 107, wherein the cavity assembly 101 includes a front plate 102, an inner container 103 and a rear plate 104, the front plate 102 is disposed at an open front end of the inner container 103, the door body 107 is used for sealing the inner container 103 and is connected with the front plate 102, the rear plate 104 is disposed at a rear end of the inner container 103, the outer cover 105 covers the inner container 103 to protect the inner container 103, two ends of the outer cover 105 are respectively connected and fixed with the front plate 102 and the rear plate 104, the computer board is mounted on the electric control box 106, and the electric control box 106 is mounted on the front plate 102 and located at one side of the door body 107. The computer board mainly comprises a power module, a display module, a knob module and the like, wherein the power module has the functions of power processing, control processing, load driving and the like, the knob module is used for user operation, such as setting cooking parameters and function selection of the electric heating device 100, and the display module is used for displaying the cooking parameters and the state of the electric heating device 100. It should be noted that the electric heating apparatus 100 may be an induction cooker, an electric oven, a steam oven, or other household appliances.

Referring to fig. 3 and 4, the electronic control box 106 has a first through hole 401, the front plate 102 has a second through hole 108, and the second through hole 108 has an inward flange 402 extending away from the electronic control box 106; the electronic control box 106 is connected with the front plate 102 through a self-tapping screw 201, and the self-tapping screw 201 penetrates through the first through hole 401 and then is in threaded connection with the inward flange 402. During installation, the first through hole 401 is aligned with the second through hole 108, the self-tapping screw 201 penetrates through the electric control box 106 from the front side of the electric heating device 100 and is in threaded connection with the front plate 102, namely, the self-tapping screw 201 is located on one side outside the door body 107 and penetrates through the first through hole 401 to enter the second through hole 108 from the direction from the door body 107 to the inner container 103, and after the self-tapping screw 201 taps the inward flanging 402, the self-tapping screw 201 is in threaded connection with the inward flanging 402 and fixed. At this time, the head of the tapping screw 201 is located on the side of the electronic control box 106. That is, in detaching, the tapping screw 201 can be screwed and detached from the outside of the electric heating apparatus 100 by using a screwdriver, and then the computer board can be taken out without detaching the cover 105, which facilitates after-sales repair and replacement, and improves the work efficiency of after-sales repair. In the conventional electric heating device 100, the electric control box 106 is provided with a stud, the front plate 102 is a common through hole, the screw penetrates through the through hole of the front plate 102 and then is in threaded connection with the stud of the electric control box 106, at this time, the head of the screw is located in a space surrounded by the outer cover 105, the front plate 102 and the rear plate 104, and when the screw is detached, the outer cover 105 needs to be detached first to screw and detach the screw, so that the after-sale workload is large, and the working efficiency is low. The head of the tapping screw 201 of the present embodiment is located outside the electric heating apparatus 100 and is not covered or blocked by the outer cover 105, so that the outer cover 105 does not need to be detached during detachment, thereby facilitating after-sale maintenance and replacement and improving the work efficiency of after-sale maintenance.

In some embodiments, the electronic control box 106 has a receiving cavity 403 that receives the head of the self-tapping screw 201. The accommodating cavity 403 and the first through hole 401 form a stepped hole structure, the head of the tapping screw 201 is hidden in the accommodating cavity 403, the tapping screw 201 is not easy to see from the appearance, the integral aesthetic feeling of the electric heating apparatus 100 is improved, and the head of the tapping screw 201 is not exposed outside and is not easy to contact with moisture in the external environment, so that the accommodating cavity 403 has a certain antirust function.

Referring to fig. 4, in some embodiments, the housing 105 is snap-fit to the front plate 102 and the housing 105 is screw-fit to the rear plate 104. The edge of the outer cover 105 extends to form a U-shaped elastic clamp 404, the front plate 102 is provided with a connecting plate 405 extending towards the U-shaped elastic clamp 404, a protrusion 406 is arranged on the connecting plate 405, one end of the connecting plate 405 extends into an opening of the U-shaped elastic clamp 404, the protrusion 406 is clamped in the opening of the U-shaped elastic clamp 404, and the connecting plate 405 is separated from the U-shaped elastic clamp 404. The outer cover 105 is connected with the front plate 102 in a buckling mode, one end of the outer cover 105 can be quickly positioned and installed, the outer cover 105 is connected with the rear plate 104 through screws, the connection reliability is improved, and the outer cover 105 is prevented from falling off due to external factors such as vibration. It is understood that in some implementations, the housing 105 may be screwed to the front plate 102, and the housing 105 may be screwed to the rear plate 104.

Referring to fig. 5 to 9, the electronic control box 106 is provided with a hook 601, and the front plate 102 has a bayonet 605 engaged with the hook 601. When the electronic control box is installed, the hook 601 of the electronic control box 106 is firstly buckled in the bayonet 605 of the front plate 102, and then the electronic control box 106 and the front plate 102 are fixed through the self-tapping screw 201. The hook 601 is pre-fixed with the bayonet 605, and then is fastened by the self-tapping screw 201, so that quick installation is realized and the connection reliability is ensured. It should be noted that, in addition to the two hooks 601 shown in the figure, the electronic control box 106 may also be provided with 1, 3, 4, or 5 hooks 601, that is, the number of the hooks 601 may be provided as several.

Specifically, referring to fig. 6 and 7, the hook 601 includes a cantilever 602, a hook 603, and a reinforcing plate 604, the hook 603 being disposed at one end of the cantilever 602, a bottom surface of the cantilever 602 facing a lower wall of the bayonet 605, and the reinforcing plate 604 being disposed on a top surface of the cantilever 602. The reinforcing plate 604 effectively enhances the strength of the cantilever 602, reduces the overall weight of the hook 601, and improves the service life of the hook 601.

In some embodiments, the top of the reinforcing plate 604 abuts against the upper wall of the bayonet 605, and one end of the reinforcing plate 604 facing the hook 603 is provided with a relief 606 that relieves the bayonet 605. The top of the reinforcing plate 604 abuts against the upper wall of the bayonet 605, so that support is provided for the electronic control box 106, and the connection strength between the electronic control box 106 and the front plate 102 is effectively improved. And the avoidance part 606 arranged at one end of the reinforcing plate facing the hook part 603 can prevent the reinforcing plate from interfering with the bayonet 605 when the electronic control box 106 is installed, so that the installation is smooth, and the installation efficiency is improved.

Referring to fig. 8 and 9, in some embodiments, two sides of the bayonet 605 are respectively provided with an elastic piece 901, the elastic piece 901 extends inward from a side wall of the bayonet 605, one end of the elastic piece 901 is connected with the side wall of the bayonet 605, the other end is a free end, and extends in a direction away from the electronic control box 106, and the whole has certain elasticity. When the electronic control box 106 is installed, the hook 601 presses the elastic piece 901, the elastic piece 901 deforms, the hook 601 is allowed to pass through, after the hook 601 is clamped in the bayonet 605, the elastic piece 901 is pressed on the side surface of the hook 601 to limit the hook 601, the hook 601 is prevented from swinging to the side surface, and the installation stability is ensured.

Referring to fig. 7 and 8, in some embodiments, the electronic control box 106 is provided with a positioning portion 701, the front plate 102 is provided with a positioning hole 109, and the positioning portion 701 is inserted into the positioning hole 109 to realize the positioning of the electronic control box 106. In the installation process of the tapping screw 201, the first through hole 401 and the second through hole 108 need to be aligned, and after the first through hole 401 and the second through hole 108 are aligned, the tapping screw 201 can be smoothly installed. In the past, the installation step also consumes much time, and particularly, under the condition that an operator is not skilled, the time consumption is more, and the overall working efficiency is influenced. In this embodiment, the positioning portion 701 is matched with the positioning hole 109, so that accurate positioning is realized, time for aligning the first through hole 401 and the second through hole 108 is saved, and work efficiency is effectively improved. In particular, the screw in this embodiment is a tapping screw 201, and compared with a general screw, the tapping screw 201 performs threading while tapping, and if the first through hole 401 and the second through hole 108 are deviated during the tapping, assembly failure may be caused, and reinstallation may be required. The matching of the positioning part 701 and the positioning hole 109 can reduce the probability of tapping deflection and improve the assembly efficiency. In addition to the two positioning portions 701 shown in the figure, the electronic control box 106 may be provided with 1, 3, 4, 5, or the like positioning portions 701, that is, the number of the positioning portions 701 may be several.

In some embodiments, the cross-section of the positioning portion 701 is C-shaped. That is, the cross-sectional shape of the positioning portion 701 is such that an opening is formed in a closed ring, the positioning portion 701 has a certain amount of elastic deformation by the opening, the positioning portion 701 deforms in the process of inserting the positioning portion 701 into the positioning hole 109, the size of the positioning portion 701 becomes smaller, so that the positioning portion 701 smoothly enters the positioning hole 109, after the installation is completed, the positioning portion 701 has a tendency of recovering the original shape, so that the positioning portion 701 is expanded in the positioning hole 109, and thus the positioning portion 701 is tightly connected with the positioning hole 109, and the displacement between the electronic control box 106 and the front plate 102 is prevented, thereby achieving the effect of accurate positioning.

The following describes the mounting and dismounting process of the electric heating apparatus 100 with reference to fig. 1 to 9:

when the electronic control box 106 is installed, a certain inclination angle is formed between the electronic control box 106 and the front plate 102, the hook 601 of the electronic control box 106 is obliquely aligned with the bayonet 605 of the front plate 102, then the electronic control box 106 is slightly pressed downwards, the bottom surface of the cantilever 602 of the hook 601 is pressed on the lower wall of the bayonet 605, the hook part 603 of the hook 601 is clamped in the bayonet 605 of the front plate 102, then the electronic control box 106 is rotated by taking the connection point of the hook 601 and the bayonet 605 as a rotation center, the positioning part 701 of the electronic control box 106 enters the positioning hole 109 of the front plate 102 to complete positioning, and finally the self-tapping screw 201 penetrates through the first through hole 401 and the second through hole 108 and then is in threaded connection with the inward flange 402 of the second through hole 108, so that the electronic control box 106 and the front plate 102 are installed.

During disassembly, the tapping screw 201 is directly disassembled, then the electric control box 106 is rotated by taking the connection point of the hook 601 and the bayonet 605 as a rotation center, so that the positioning part 701 of the electric control box 106 is separated from the positioning hole 109 of the front plate 102, the electric control box 106 is lifted upwards for a certain distance, the hook part 603 of the hook 601 is separated from the bayonet 605 of the front plate 102, and finally the electric control box 106 is horizontally moved, so that the electric control box 106 can be taken out.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Electric heating device, characterized in that it comprises:

the electronic control box is provided with a first through hole, and the first through hole is formed in one surface, provided with the control key, of the electronic control box;

the cavity assembly comprises a front plate, the front plate is provided with a second through hole, and the second through hole is provided with an inward flange extending in the direction away from the electric control box;

the electric control box is connected with the front plate through a self-tapping screw, and the self-tapping screw penetrates through the first through hole and then is in threaded connection with the inner flanging;

the electronic control box is provided with a clamping hook, the front plate is provided with a bayonet matched with the clamping hook, the clamping hook comprises a cantilever, a hook part and a reinforcing plate, the hook part is arranged at one end of the cantilever, one surface of the cantilever faces to the lower wall of the bayonet, the reinforcing plate is arranged on the other surface of the cantilever, and the top of the reinforcing plate is abutted against the upper wall of the bayonet; the first through hole is positioned at the upper end of the electric control box, and the clamping hook is positioned at the lower end of the electric control box;

and the reinforcing plate is provided with an avoiding part for avoiding the bayonet at one end facing the hook part, so that after the hook part enters the bayonet, the electric control box can rotate around the connection point of the clamping hook and the bayonet, and the second through hole is conveniently aligned.

2. An electric heating device as claimed in claim 1, characterized in that the bayonet is provided with resilient tabs which are crimped against the side faces of the catch.

3. The electric heating apparatus according to claim 1, wherein the electric control box is provided with a positioning portion, and the front plate is provided with a positioning hole into which the positioning portion is inserted to realize positioning of the electric control box.

4. An electric heating apparatus according to claim 3, wherein the positioning portion is C-shaped in cross section.

5. Electrical heating device according to claim 1, characterized in that the electrical control box has a housing cavity housing the head of the self-tapping screw.

6. The electric heating equipment of claim 1, further comprising an outer cover, wherein the cavity assembly further comprises a liner and a back plate, the front plate is arranged at the front end of the liner, the back plate is arranged at the back end of the liner, the outer cover covers the liner, and two ends of the outer cover are respectively connected with the front plate and the back plate.

7. Electrical heating device as in claim 6, characterized in that the cover is snap-fitted to the front plate and screwed to the rear plate.