CN216357843U

CN216357843U - Fixing structure of circuit board

Info

Publication number: CN216357843U
Application number: CN202122984964.2U
Authority: CN
Inventors: 朱鹏飞; 王志杰; 冯辉; 王天武; 魏龙; 杜瑞军
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Zhengzhou Electric Appliances Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Zhengzhou Electric Appliances Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-19
Anticipated expiration: 2031-11-25

Abstract

The utility model relates to the technical field of circuit board fixing, in particular to a circuit board fixing structure. The fixing structure of the circuit board comprises a fixing shell, a connecting assembly and an elastic assembly, wherein the connecting assembly comprises two groups of connecting parts which are respectively arranged on two opposite sides of the fixing shell and are suitable for being respectively connected with two opposite sides of the circuit board; the elastic component is integrally formed on the fixed shell and comprises at least two groups of elastic sheets, wherein the two groups of elastic sheets are respectively arranged on the other two opposite sides of the fixed shell and are suitable for respectively elastically supporting the other two opposite sides of the circuit board. According to the fixing structure of the circuit board, the elastic component is integrally formed on the fixing shell, the elastic component does not need to be assembled before the circuit board is installed, the installation steps are fewer, the installation difficulty is lower, and the installation cost is lower.

Description

Fixing structure of circuit board

Technical Field

The utility model relates to the technical field of household appliances, in particular to a fixing structure of a circuit board.

Background

In a household appliance, a plastic casing is generally used to fix a circuit board, such as a circuit board inside a display box of an air conditioner or other household appliances, and in order to make the circuit board closely attached to a display panel, the circuit board generally needs to be elastically fixed.

In some existing household appliances, a spring is usually installed between a circuit board and a plastic shell to realize elastic fixation of the circuit board, however, in the assembling process, the circuit board needs to be installed after the spring is installed in a limiting way, and the number of installation steps is large; and because the circuit board in current household electrical appliances field is moving towards miniaturization development, the installation degree of difficulty of miniature spring is great, has increased assembly cost.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention is directed to overcome the defects of the prior art that the mounting difficulty is high and the assembly cost is high, so as to provide a fixing structure of a circuit board, which is simple to mount and has a low cost.

In order to solve the above problems, the present invention provides a fixing structure of a circuit board, comprising a fixing housing, a connecting assembly and an elastic assembly, wherein the connecting assembly comprises two groups of connecting parts, the two groups of connecting parts are respectively arranged on two opposite sides of the fixing housing and are suitable for being respectively connected with two opposite sides of the circuit board; the elastic component is integrally formed on the fixed shell and comprises at least two groups of elastic sheets, wherein the two groups of elastic sheets are respectively arranged on the other two opposite sides of the fixed shell and are suitable for respectively elastically supporting the other two opposite sides of the circuit board.

The utility model provides a fixing structure of a circuit board.A spring plate comprises a connecting section and a suspension section, wherein the connecting section extends out from the bottom wall of a fixed shell; one end of the suspension section is connected with one end of the bottom wall of the connecting section far away from the fixed shell, and the other end of the suspension section extends in a suspension mode in the direction far away from the connecting section.

According to the fixing structure of the circuit board, the surface, back to the bottom wall, of the suspension section is the top surface, the top surface is arranged in an inclined mode, and the distance between the top surface and the bottom wall is gradually increased along the direction far away from the connecting section.

According to the fixing structure of the circuit board, the top surface is in smooth transition with the connecting section, and one end, far away from the connecting section, of the top surface is in smooth transition with the side surface of the suspending section.

According to the fixing structure of the circuit board, the ratio D of the length to the width of the suspension section is satisfied, and D is more than or equal to 4 and less than or equal to 6.

According to the fixing structure of the circuit board, the suspension section is provided with the limiting part, and the limiting part is suitable for positioning the suspension section when the suspension section is demoulded.

According to the fixing structure of the circuit board, the limiting part is a limiting hole arranged on the suspension section.

According to the fixing structure of the circuit board, the surface, facing the bottom wall, of the suspension section is the bottom surface, and the distance between the bottom surface and the bottom wall is gradually increased along the demolding direction of the suspension section.

According to the fixing structure of the circuit board, the bottom wall is provided with the demolding hole, and the projection of the suspended section on the bottom wall is positioned in the demolding hole.

The utility model provides a fixing structure of a circuit board, wherein an elastic assembly comprises three groups of elastic sheets, two groups of elastic sheets arranged on the other two opposite sides of a fixed shell are first elastic sheets, the other group of elastic sheets are second elastic sheets, and the second elastic sheets and the first elastic sheets are distributed in a triangular mode.

The utility model has the following advantages:

1. the utility model provides a fixing structure of a circuit board, which comprises a fixed shell, a connecting assembly and an elastic assembly, wherein the connecting assembly comprises two groups of connecting parts, and the two groups of connecting parts are respectively arranged on two opposite sides of the fixed shell and are suitable for being respectively connected with two opposite sides of the circuit board; the elastic component is integrally formed on the fixed shell and comprises at least two groups of elastic sheets, wherein the two groups of elastic sheets are respectively arranged on the other two opposite sides of the fixed shell and are suitable for respectively elastically supporting the other two opposite sides of the circuit board.

The connecting assembly fixedly connects two opposite sides of the circuit board, and the elastic assembly elastically supports the other two opposite sides of the circuit board to ensure the elastic fixation of the circuit board. Elastic component integrated into one piece need not to assemble elastic component before the installation circuit board on fixed casing, and the installation step is less, and the installation degree of difficulty is lower, and installation cost is also lower.

2. The utility model provides a fixing structure of a circuit board.A spring plate comprises a connecting section and a suspension section, wherein the connecting section extends out from the bottom wall of a fixed shell; one end of the suspension section is connected with one end of the bottom wall of the connecting section far away from the fixed shell, and the other end of the suspension section extends in a suspension mode in the direction far away from the connecting section. The other end of the suspended section has an elastic force close to or far away from the bottom wall, and the elastic sheet is arranged between the circuit board and the bottom wall to realize elastic support of the circuit board.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 shows a top view of a first embodiment of a fixing structure of a circuit board of the present invention;

fig. 2 shows a schematic view of a first embodiment of a fixing structure of a circuit board of the present invention;

fig. 3 shows a first schematic view of a first embodiment of a spring plate according to the utility model;

fig. 4 shows a second schematic view of a first embodiment of a spring plate according to the utility model;

fig. 5 shows a third schematic view of a first embodiment of a spring plate according to the utility model;

fig. 6 shows a top view of a second embodiment of a fixing structure of a circuit board of the present invention;

fig. 7 is a schematic view showing a second embodiment of a fixing structure of a circuit board of the present invention;

fig. 8 shows a first schematic view of a second embodiment of the spring plate of the utility model;

fig. 9 shows a second schematic view of a second embodiment of the spring plate of the present invention;

fig. 10 shows a third schematic view of a second embodiment of the spring plate of the utility model;

fig. 11 shows a schematic diagram of the fixing structure of the circuit board of the present invention after the circuit board is mounted.

Description of reference numerals:

1. a stationary housing; 11. a bottom wall; 12. demoulding holes; 2. a connecting portion; 3. a spring plate; 31. a connecting section; 32. a suspended section; 321. a top surface; 322. a limiting part; 323. a bottom surface; 4. a circuit board; 5. a support pillar; 6. a fool-proof part.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 11, the present embodiment discloses a fixing structure of a circuit board, including a fixing housing 1, a connecting assembly and an elastic assembly, where the connecting assembly includes two sets of connecting portions 2, and the two sets of connecting portions 2 are respectively disposed on two opposite sides of the fixing housing 1 and are adapted to be respectively connected to two opposite sides of a circuit board 4; the elastic component is integrally formed on the fixed shell 1 and comprises at least two groups of elastic sheets 3, wherein the two groups of elastic sheets 3 are respectively arranged on the other two opposite sides of the fixed shell 1 and are suitable for respectively elastically supporting the other two opposite sides of the circuit board 4. The fixing structure of the circuit board in this embodiment may be a display box of a household appliance such as an air conditioner, and may also be other control boxes with a display panel.

The connecting assembly fixedly connects two opposite sides of the circuit board 4, and the elastic assembly elastically supports the other opposite sides of the circuit board 4 to ensure the elastic fixation of the circuit board 4. Elastic component integrated into one piece need not to assemble elastic component before installing circuit board 4 on fixed casing 1, and the installation step is less, and the installation degree of difficulty is lower, and installation cost is also lower.

In a specific embodiment, the circuit board 4 is a generally rectangular board, the shape of the fixed housing 1 matches the shape of the circuit board 4, two opposite sides of the fixed housing 1 form an included angle with two opposite other sides of the fixed housing 1, and preferably, two opposite sides of the fixed housing 1 are perpendicular to two opposite other sides of the fixed housing 1. Two sets of connecting portion 2 that set up relatively carry out fixed connection at the length direction's of circuit board 4 both ends to circuit board 4, and two sets of shell fragment 3 that set up relatively carry out elastic support at the width direction's of circuit board 4 both ends to circuit board 4. Connecting portion 2 is the connection buckle, and connection buckle integrated into one piece is on diapire 11, is the elasticity buckle. A gap is formed between the connecting buckle and two opposite side walls of the fixed shell 1, and the gap is an elastic deformation space provided by the connecting buckle when the connecting buckle is installed with the fixed shell 1. Connect the buckle including the cardboard that upwards extends by diapire 11, the cardboard is kept away from the one end of diapire 11 and is equipped with the card protrudingly, and the relative protrusion of the protruding relative of card of two sets of connection buckles. The opposite surfaces of the two sets of clamping protrusions are guide inclined planes for guiding the installation of the circuit board 4. The distance between the guide inclined surfaces of the two clamping convex groups is gradually reduced from top to bottom. Still be equipped with on the lateral wall of fixed casing 1 and prevent slow-witted portion 6, prevent that slow-witted portion 6 extends to relative lateral wall by the lateral wall of fixed casing 1, be equipped with on circuit board 4 with prevent slow-witted 6 complex prevent slow-witted groove of portion for guide operator correctly installs circuit board 4. The fixed shell is also provided with a plurality of supporting columns 5, the supporting columns 5 are used for supporting the circuit board, and the height of each supporting column 5 is slightly lower than the highest position of the elastic sheet. The supporting columns 5 and the elastic sheets are distributed at intervals in a staggered mode. Preferably, the support posts 5 extend from the bottom wall of the stationary housing. Still be equipped with two limiting plates on the fixed casing, two limiting plates set up respectively on two relative lateral walls of fixed casing, and two limiting plates set up same one side at fixed casing with two relative shell fragments respectively.

In the fixing structure of the circuit board of this embodiment, the elastic sheet 3 includes a connecting section 31 and a suspending section 32, and the connecting section 31 extends from the bottom wall 11 of the fixing housing 1; one end of the suspending section 32 is connected to the end of the connecting section 31 far away from the bottom wall 11 of the fixed casing 1, and the other end extends in suspension in the direction far away from the connecting section 31. The unsettled section 32 is unsettled in the top of diapire 11, and the other end of unsettled section 32 has and is close to diapire 11 or keeps away from the elasticity of diapire 11, and shell fragment 3 sets up between circuit board 4 and diapire 11, realizes the elastic support to circuit board 4.

In the fixing structure of the circuit board of this embodiment, the surface of the suspending section 32 facing away from the bottom wall 11 is a top surface 321, the top surface 321 is disposed obliquely, and the distance between the top surface 321 and the bottom wall 11 gradually increases along the direction away from the connecting section 31. The top surface 321 of the suspending section 32 is obliquely arranged, so that the suspending section 32 can be ensured to have larger elasticity, one end, away from the connecting section 31, of the suspending section 32 has larger elasticity, elastic support can be realized, and the suspending section 32 at the connecting section 31 can be fixedly supported.

In the fixing structure of the circuit board of the embodiment, the top surface 321 is in smooth transition with the connecting section 31, and one end of the top surface 321, which is far away from the connecting section 31, is in smooth transition with the side surface of the suspending section 32, so that when the top surface 321 supports the circuit board 4, the circuit board 4 is not damaged by sharp corners; not only can ensure that the contact area of the suspended section 32 and the circuit board 4 is large, but also can ensure that the suspended section 32 can not damage the circuit board 4.

In the fixing structure of the circuit board in the embodiment, the ratio D of the length to the width of the hanging section 32 is satisfied, and D is more than or equal to 4 and less than or equal to 6. Ensuring that the suspended section 32 has good elasticity. Not only ensures that the suspended section 32 is not easy to deform due to overlong to cause insufficient elasticity, but also ensures that the suspended section 32 is not easy to deform due to overlong. In one embodiment, the ratio D of the length to the width of the flying section 32 is 4; in another embodiment, the ratio D of the length to the width of the flying section 32 is 6; preferably, the flying section 32 has a length to width ratio D of 5.

In a specific embodiment of this embodiment, the suspending sections 32 of the two sets of elastic pieces 3 disposed on the other two opposite sides of the fixed housing 1 extend in opposite directions, the elastic support range of the elastic pieces 3 is large, and the elastic support effect is better. Alternatively, the suspending sections 32 of the two sets of elastic sheets 3 arranged on the other two opposite sides of the fixed housing 1 extend in opposite directions.

As shown in fig. 1 to 5, in the fixing structure of the circuit board of the present embodiment, the suspending section 32 is provided with a position-limiting portion 322, and the position-limiting portion 322 is suitable for positioning the suspending section 32 when the suspending section 32 is demolded. Because the suspending section 32 is suspended above the bottom wall 11, the demolding direction of the suspending section 32 is not consistent with the demolding direction of the fixed shell 1, and the suspending section 32 is demolded along the direction perpendicular to the bottom wall 11. The limiting portion 322 provides a force opposite to the demolding direction for the suspended section 32 when the suspended section 32 is laterally demolded, and ensures that the suspended section 32 cannot deform and deviate during demolding.

In the fixing structure of the circuit board of this embodiment, the position-limiting portion 322 is a position-limiting hole disposed on the suspending section 32. Simple structure, and can cooperate with the reference column on the mould to carry out spacing fixed with the section of hanging 32. The limiting part 322 can be a blind hole arranged on the suspension section 32, and a groove-shaped limiting part 322 is formed; alternatively, the position-limiting portion 322 may be a through hole provided on the flying section 32. Preferably, the limiting portion 322 is a blind hole disposed on the suspension section 32, so as to prevent the positioning column on the mold from rubbing against the mold of the suspension section 32.

In the fixing structure of the circuit board of this embodiment, the surface of the suspending section 32 facing the bottom wall 11 is the bottom surface 323, the distance between the bottom surface 323 and the bottom wall 11 gradually increases along the demolding direction of the suspending section 32, and the thickness of the suspending section 32 gradually decreases along the demolding direction, so as to facilitate demolding.

As shown in fig. 6 to 10, in the fixing structure of the circuit board of the present embodiment, the bottom wall 11 is provided with a demolding hole 12, and the demolding of the suspending section 32 is facilitated by the arrangement of the demolding hole 12. The projection of the suspended section 32 on the bottom wall 11 is positioned in the demolding hole 12, so that demolding is facilitated, and the bottom wall 11 is not damaged during demolding. In a preferred embodiment, the shape of the ejection hole 12 corresponds to the shape of the flying section 32.

In the fixing structure of the circuit board of this embodiment, the elastic assembly includes three sets of elastic pieces 3, two sets of elastic pieces 3 disposed on the other two opposite sides of the fixing housing 1 are first elastic pieces 3, the other set of elastic pieces 3 are second elastic pieces 3, and the second elastic pieces 3 and the first elastic pieces 3 are distributed in a triangular shape. A more stable resilient support for the circuit board 4 is formed.

As a changeable implementation manner, the elastic assembly may also include four sets of elastic pieces 3, the four sets of elastic pieces 3 may be opposite to each other in pairs and distributed along the length direction of the fixed housing 1, or two sets of elastic pieces 3 of the four sets of elastic pieces 3 may be opposite to each other in pairs, and the other two sets of elastic pieces 3 are distributed along the length direction of the fixed housing 1 and respectively form two sets of triangular distribution with the two sets of elastic pieces 3 opposite to each other in pairs. Alternatively, the elastic member may include four or five or more elastic pieces 3. The longer the length of the stationary housing 1, the more the spring pieces 3.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A fixing structure of a circuit board, comprising:

a stationary housing (1);

the connecting assembly comprises two groups of connecting parts (2), the two groups of connecting parts (2) are respectively arranged on two opposite sides of the fixed shell (1) and are suitable for being respectively connected with two opposite sides of the circuit board (4);

the elastic assembly is integrally formed on the fixed shell (1) and comprises at least two groups of elastic sheets (3), wherein the two groups of elastic sheets (3) are respectively arranged on the other two opposite sides of the fixed shell (1) and are suitable for respectively elastically supporting the other two opposite sides of the circuit board (4).

2. The fixing structure of the circuit board according to claim 1, wherein the spring plate (3) comprises:

a connecting section (31) extending from the bottom wall (11) of the stationary housing (1);

one end of the suspension section (32) is connected with the end, far away from the bottom wall (11) of the fixed shell (1), of the connecting section (31), and the other end of the suspension section extends in a suspension mode in the direction far away from the connecting section (31).

3. The fixing structure of the circuit board according to claim 2, wherein the surface of the suspending section (32) facing away from the bottom wall (11) is a top surface (321), the top surface (321) is disposed obliquely, and the distance between the top surface (321) and the bottom wall (11) gradually increases in a direction away from the connecting section (31).

4. The fixing structure of the circuit board according to claim 3, wherein the top surface (321) is rounded off to the connecting section (31), and an end of the top surface (321) away from the connecting section (31) is rounded off to a side surface of the suspending section (32).

5. The fixing structure of the circuit board according to claim 3, wherein the ratio D of the length to the width of the suspending section (32) is satisfied, 4 ≦ D ≦ 6.

6. The fixing structure of the circuit board according to any one of claims 2-5, wherein a position-limiting portion (322) is provided on the suspending section (32), and the position-limiting portion (322) is adapted to position the suspending section (32) when the suspending section (32) is demolded.

7. The fixing structure of the circuit board according to claim 6, wherein the position-limiting portion (322) is a position-limiting hole provided on the suspending section (32).

8. The fixing structure of the circuit board according to claim 7, wherein the surface of the suspending section (32) facing the bottom wall (11) is a bottom surface (323), and the distance between the bottom surface (323) and the bottom wall (11) is gradually increased along the mold releasing direction of the suspending section (32).

9. A fixing structure of a circuit board according to any one of claims 2-5, characterized in that a demolding hole (12) is provided on the bottom wall (11), and a projection of the suspending section (32) on the bottom wall (11) is located in the demolding hole (12).

10. The fixing structure of the circuit board according to any one of claims 1-5 and 7-8, wherein the elastic assembly comprises three sets of elastic pieces (3), two sets of the elastic pieces (3) arranged on the other two opposite sides of the fixing shell (1) are first elastic pieces (3), the other set of the elastic pieces (3) are second elastic pieces (3), and the second elastic pieces (3) and the first elastic pieces (3) are distributed in a triangular shape.