CN219203511U

CN219203511U - Electric control box, electric control assembly and household appliance

Info

Publication number: CN219203511U
Application number: CN202223523442.3U
Authority: CN
Inventors: 栾京武
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Hefei Shiyan Electronic Technology Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Hefei Shiyan Electronic Technology Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-16
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of electric appliances, in particular to an electric control box, an electric control assembly and a household appliance. The electric control box comprises a box body, a grounding piece and a locking assembly, wherein the box body can be used for fixedly mounting a circuit board, and a through hole is formed in the box body. The both ends of grounding part expose in the surface of box body respectively, and locking subassembly is including locking lever, elastic component and the lock sleeve that can electrically connect, and the one end that the locking lever is located the box body is supported tightly on the grounding part, and the one end that the locking lever is located the box body is passed through hole and circuit board in proper order and is overlapped and be equipped with the lock sleeve, presss from both sides between lock sleeve and the circuit board and is equipped with the elastic component. Household electrical appliances and automatically controlled subassembly all include foretell automatically controlled box, through the flexible characteristic of automation of elastic component, even when the lock sleeve takes place slight slip on the locking lever, the circuit board still can realize reliably electricity through elastic component and lock sleeve and be connected, has improved the reliability and the stability of circuit board ground connection, has reduced the defective rate and the cost of box body simultaneously.

Description

Electric control box, electric control assembly and household appliance

Technical Field

The utility model relates to the technical field of electric appliances, in particular to an electric control box, an electric control assembly and a household appliance.

Background

In a common household appliance, electric elements such as a power line, a main wire harness and a filter in an electric control box of electric equipment such as a washing machine are all required to be grounded so as to ensure the safety of the household appliance in the use process.

The prior electric control box is provided with a grounding piece structure, a circuit board and a washing machine as in the earlier patent with the application number of CN215184565U, wherein the electric control box is provided with the grounding piece in the box body in an injection molding manner, the first assembly surface and the second assembly surface of the grounding piece are not on the same plane, the grounding end of the circuit board in the box body and the external grounding metal piece are respectively corresponding to each other, and the first assembly surface is quickly connected with the grounding end of the circuit board through the arrangement of the grounding end of the first assembly surface, and the second assembly surface is quickly connected with the external grounding metal piece. The prior art has the following problems:

1) The circuit board is directly connected with the grounding piece through pressing by rigid pieces such as screws, when the screws are loosened and fail, the circuit board is easily separated from the grounding piece, so that the electric control box is not grounded, and the safety of the household appliance is reduced.

2) The two ends of the grounding piece in the box body are reversely exposed and respectively exposed in the box body and the outside, so that the design and processing difficulty of the box body are increased, and the reject ratio and the cost of the finished product of the box body are improved.

Disclosure of Invention

The utility model aims to provide an electric control box, an electric control assembly and a household appliance, so as to realize reliable grounding of the electric control box and reduce design complexity and processing difficulty of a box body of the electric control box.

The technical scheme adopted by the utility model is as follows:

an electronic control box, comprising:

the box body can be used for fixedly mounting a circuit board, and a through hole is formed in the box body;

the two ends of the grounding piece are respectively exposed out of the outer surface of the box body;

the locking assembly comprises a locking rod, an elastic piece and a locking sleeve, wherein the locking rod, the elastic piece and the locking sleeve can be electrically connected, one end of the locking rod, which is located outside the box body, is abutted against the grounding piece, one end of the locking rod, which is located inside the box body, sequentially penetrates through the through hole and the circuit board and is sleeved with the locking sleeve, and the elastic piece is clamped between the locking sleeve and the circuit board.

Preferably, the locking assembly comprises two elastic pieces, and one elastic piece is clamped between one end of the locking rod, which is positioned outside the box body, and the grounding piece.

As an optimal scheme, the elastic piece is an elastic pad, and the two elastic pads are sleeved on the locking rod.

Preferably, the locking rod is a bolt, the lock sleeve is a nut, and the bolt is in threaded connection with the nut.

As a preferred scheme, the grounding piece comprises a first end part, a connecting rod and a second end part which are connected in sequence, the connecting rod is buried in the box body, the first end part and the second end part are exposed out of the outer surface of the box body, and one end of the locking rod positioned outside the box body is abutted against the first end part.

As a preferable scheme, the bottom surface of the box body is concavely provided with a first groove and a second groove, the first end part is positioned in the first groove, and the second end part is embedded in the second groove and is flush with the bottom surface of the box body.

As a preferable scheme, the through hole is communicated with the first groove, a first hole is formed in the first end portion, a second hole is correspondingly formed in the circuit board, and one end of the locking rod located in the box body sequentially penetrates through the first hole, the through hole, the second hole and the lock sleeve in a sleeved mode.

Preferably, one end of the locking rod located outside the box body is lower than or flush with the bottom surface of the box body.

Preferably, the second end part is far away from the end of the connecting rod and is bent towards the box body to form a locking head, and the locking head is wrapped in the box body.

An electric control assembly comprises a circuit board and the electric control box, wherein the circuit board is fixedly arranged in the box body of the electric control box.

A household appliance comprises the electric control assembly.

The beneficial effects of the utility model are as follows:

the electric control box provided by the utility model comprises a box body, a grounding part and a locking assembly, wherein the circuit board is electrically connected with the grounding part through the elastic part, the lock sleeve and the locking rod in sequence so as to realize grounding of the circuit board. The elastic piece is clamped between the lock sleeve and the circuit board, and through the automatic telescopic characteristic of the elastic piece, even if the lock sleeve slightly slides on the locking rod, the circuit board can still be reliably and electrically connected with the lock sleeve through the elastic piece, so that the reliability and stability of the grounding of the circuit board are improved. In addition, as the two ends of the grounding piece are respectively exposed out of the outer surface of the box body, the box body is convenient to open, the structure of the box body is simplified, the design complexity and the processing difficulty of the box body are reduced, and the finished product reject ratio and the production cost of the box body are reduced.

The electric control assembly comprises the electric control box, the elastic piece is clamped between the lock sleeve and the circuit board, and the circuit board can be reliably and electrically connected with the lock sleeve through the elastic piece through the automatic telescopic characteristic of the elastic piece even if the lock sleeve slightly slides on the locking rod, so that the reliability and stability of grounding of the circuit board are improved. In addition, as the two ends of the grounding piece are respectively exposed out of the outer surface of the box body, the box body is convenient to open, the structure of the box body is simplified, the design complexity and the processing difficulty of the box body are reduced, and the finished product reject ratio and the production cost of the box body are reduced.

The household appliance provided by the utility model comprises the electric control assembly, the elastic piece is clamped between the lock sleeve and the circuit board, and the circuit board can still be reliably and electrically connected with the lock sleeve through the elastic piece through the automatic telescopic characteristic of the elastic piece even if the lock sleeve slightly slides on the locking rod, so that the reliability and stability of grounding of the circuit board are improved. In addition, as the two ends of the grounding piece are respectively exposed out of the outer surface of the box body, the box body is convenient to open, the structure of the box body is simplified, the design complexity and the processing difficulty of the box body are reduced, and the finished product reject ratio and the production cost of the box body are reduced.

Drawings

FIG. 1 is a top view of a cartridge provided in an embodiment of the present utility model;

FIG. 2 is a bottom view of a cartridge provided in an embodiment of the present utility model;

FIG. 3 is an exploded view of an assembly structure of a locking assembly and a grounding member provided in an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 1;

fig. 5 is a partial enlarged view at B in fig. 4.

The parts in the figures are named and numbered as follows:

10. a circuit board; 101. a second hole;

1. a case body; 11. a through hole; 12. a first groove; 13. a second groove; 2. a grounding member; 21. a first end; 210. a first hole; 22. a connecting rod; 23. a second end; 231. a locking head; 3. a locking lever; 4. an elastic member; 5. a lock sleeve.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

The present embodiment proposes a home appliance, which may be a washing machine, an air conditioner, etc., and is not particularly limited herein. The following description uses household appliances as washing machine, the washing machine includes machine shell, electric control component and executing components of impeller and drum, etc., because the washing machine is mature product, the concrete structure and working principle are not described again.

The existing electric control assembly comprises an electric control box and a circuit board, the electric control box comprises a box body, a grounding piece and a screw, the circuit board is arranged in the box body, the grounding piece is arranged in the box body in an injection molding mode, two end portions of the grounding piece are reversely exposed, namely, the two end portions of the grounding piece are exposed to the inside and the outside of the box body respectively, the design and processing difficulty of the box body are improved, and the reject ratio and the cost of finished products of the box body are improved. Simultaneously, screw and box body fixed connection to press-fit circuit board in the one end of grounding member, thereby realize automatically controlled box ground connection. When the screw is loosened and failed, the circuit board is easily separated from the grounding piece, so that the grounding reliability of the electric control box is lower, and the safety of the household appliance is reduced.

In order to solve the above-mentioned problems, as shown in fig. 1 to 5, the present embodiment further provides an electric control box, which specifically includes a box body 1, a grounding member 2 and a locking assembly, wherein a circuit board 10 is fixedly installed in the box body 1, and a through hole 11 is formed in the box body 1. The both ends of grounding part 2 expose respectively in the surface of box body 1, and locking subassembly is including locking lever 3, elastic component 4 and the lock sleeve 5 that can the electricity be connected, and the one end that locking lever 3 is located the box body 1 outside supports tightly on grounding part 2, and the one end that locking lever 3 is located box body 1 passes through hole 11 and circuit board 10 in proper order and overlaps and be equipped with lock sleeve 5, presss from both sides between lock sleeve 5 and the circuit board 10 and be equipped with elastic component 4.

In this embodiment, the circuit board 10 is electrically connected to the grounding member 2 through the elastic member 4, the lock sleeve 5, and the lock lever 3 in order to achieve grounding of the circuit board 10. The elastic piece 4 is clamped between the lock sleeve 5 and the circuit board 10, and even if the lock sleeve 5 slightly slides on the locking rod 3 due to the automatic telescopic characteristic of the elastic piece 4, the circuit board 10 can still be reliably and electrically connected with the lock sleeve 5 through the elastic piece 4, so that the reliability and stability of the grounding of the circuit board 10 are improved.

As shown in fig. 2, two ends of the grounding member 2 of the electric control box are respectively exposed out of the outer surface of the box body 1, so that the box body 1 is convenient to open, the structure of the box body 1 is simplified, the design complexity and the processing difficulty of the box body 1 are reduced, and the yield and the production cost of finished products of the box body 1 are reduced.

As shown in fig. 3, the grounding member 2 includes a first end 21, a connecting rod 22 and a second end 23 that are sequentially connected, the connecting rod 22 is embedded in the box body 1, the first end 21 and the second end 23 are exposed out of the outer surface of the box body 1, and one end of the locking rod 3 located outside the box body 1 abuts against the first end 21.

Further, the end of the second end 23 far away from the connecting rod 22 is bent towards the box body 1 to form a locking head 231, and the locking head 231 is wrapped in the box body 1, so that the stability of mounting the second end 23 on the box body 1 is improved. The second end 23 of the present embodiment is U-shaped, such that the second end 23 encloses a U-shaped groove. When the box body 1 is mounted on the whole machine shell or the metal plate of the washing machine, the fastener (such as a bolt and the like) can penetrate through the U-shaped groove so as to realize stable mounting of the box body 1. In addition, the fastener can press the second end 23 to achieve a reliable conductive connection of the second end 23 to the machine housing or sheet metal.

As shown in fig. 2 and 5, the bottom surface of the box body 1 is concavely formed with a first groove 12 and a second groove 13, the first end 21 is located in the first groove 12, and the second end 23 is embedded in the second groove 13 and is flush with the bottom surface of the box body 1, so that the bottom surface of the box body 1 is kept horizontal, and the box body 1 is convenient to install.

As shown in fig. 3 and fig. 5, the through hole 11 is communicated with the first groove 12, the first end 21 is provided with a first hole 210, the circuit board 10 is correspondingly provided with a second hole 101, and one end of the locking rod 3 in the box body 1 sequentially passes through the first hole 210, the through hole 11 and the second hole 101 and is connected with the lock sleeve 5 in a sleeved mode, so that the circuit board 10 is connected with the grounding piece 2 in a conductive mode through the locking assembly.

Further, the locking assembly comprises two elastic pieces 4, and one elastic piece 4 is clamped between one end of the locking rod 3 positioned outside the box body 1 and the grounding piece 2, so that reliable connection between the locking rod 3 and the first end 21 of the grounding piece 2 is further ensured. As shown by the arrow in fig. 5, the current on the circuit board 10 can pass through the elastic member 4 above the circuit board 10, the lock sleeve 5, the locking lever 3, the elastic member 4 below the grounding member 2, and finally, the current is grounded through the second end 23 of the grounding member 2, so that the reliable grounding of the electronic control box is realized. In other embodiments, the grounding member 2 may also be provided as a component for signal transmission to transmit signals on the circuit board 10 through the grounding member 2 into a designated component.

The elastic piece 4 of this embodiment is the bullet pad, and two bullet pads all overlap and locate on the locking lever 3, have realized the stable installation of bullet pad. Of course, the elastic member 4 may also be a metal spring or a tab, which are not listed here. The locking rod 3 is a bolt, the lock sleeve 5 is a nut correspondingly, and the bolt is in threaded connection with the nut. It will be appreciated that the locking lever 3, the elastic member 4 and the lock sleeve 5 are all metal members to achieve electrical connection of the circuit board 10 and the ground member 2.

It should be noted that, as shown in fig. 5, one end of the locking rod 3 located outside the box body 1 is lower than or flush with the bottom surface of the box body 1, so as to ensure that the bottom surface of the box body 1 is kept horizontal, and facilitate the installation of the box body 1.

The electric control assembly provided by the utility model comprises the electric control box, the elastic piece 4 is clamped between the lock sleeve 5 and the circuit board 10, and the circuit board 10 can be reliably and electrically connected with the lock sleeve 5 through the elastic piece 4 through the automatic telescopic characteristic of the elastic piece 4 even if the lock sleeve 5 slightly slides on the locking rod 3, so that the reliability and stability of the grounding of the circuit board 10 are improved.

The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An electronic control box, characterized by comprising:

the box body (1) can be used for fixedly mounting a circuit board (10) in the box body (1), and a through hole (11) is formed in the box body (1);

the two ends of the grounding piece (2) are respectively exposed out of the outer surface of the box body (1);

the locking assembly comprises a locking rod (3), an elastic piece (4) and a lock sleeve (5) which can be electrically connected, wherein one end of the locking rod (3) outside the box body (1) is abutted against the grounding piece (2), one end of the locking rod (3) inside the box body (1) sequentially passes through the through hole (11) and the circuit board (10) and is sleeved with the lock sleeve (5), and the elastic piece (4) is clamped between the lock sleeve (5) and the circuit board (10).

2. An electronic control box according to claim 1, characterized in that the locking assembly comprises two elastic members (4), and one elastic member (4) is clamped between one end of the locking rod (3) located outside the box body (1) and the grounding member (2).

3. The electronic control box according to claim 2, characterized in that the elastic piece (4) is an elastic pad, and the two elastic pads are both sleeved on the locking rod (3).

4. The electronic control box according to claim 1, characterized in that the locking lever (3) is a bolt, the lock sleeve (5) is a nut, and the bolt is in threaded connection with the nut.

5. The electronic control box according to claim 1, wherein the grounding piece (2) comprises a first end (21), a connecting rod (22) and a second end (23) which are connected in sequence, the connecting rod (22) is buried in the box body (1), the first end (21) and the second end (23) are exposed out of the outer surface of the box body (1), and one end of the locking rod (3) located outside the box body (1) is abutted against the first end (21).

6. The electronic control box according to claim 5, characterized in that a first groove (12) and a second groove (13) are formed in the bottom surface of the box body (1) in a concave manner, the first end (21) is located in the first groove (12), and the second end (23) is embedded in the second groove (13) and is flush with the bottom surface of the box body (1).

7. The electronic control box according to claim 6, wherein the through hole (11) is communicated with the first groove (12), the first end portion (21) is provided with a first hole (210), the circuit board (10) is correspondingly provided with a second hole (101), and one end of the locking rod (3) located in the box body (1) sequentially penetrates through the first hole (210), the through hole (11) and the second hole (101) and is connected with the lock sleeve (5) in a sleeved mode.

8. The electronic control box according to claim 6, characterized in that the end of the locking lever (3) located outside the box body (1) is lower than or flush with the bottom surface of the box body (1).

9. The electronic control box according to claim 5, characterized in that the end of the second end (23) away from the connecting rod (22) is bent towards the box body (1) to form a locking head (231), and the locking head is wrapped in the box body (1).

10. An electronic control assembly, characterized by comprising a circuit board (10) and the electronic control box according to any one of claims 1-9, wherein the circuit board (10) is fixedly arranged in a box body (1) of the electronic control box.

11. A household appliance comprising the electrical control assembly of claim 10.