Bracket for circuit board assembly, circuit board assembly for household appliance and household appliance

Abstract

The utility model relates to the technical field of household appliances, in particular to a bracket for a circuit board assembly, the circuit board assembly comprises a circuit board with conductive contact pins and an electric connector connected with the conductive contact pins, and the bracket comprises an accommodating part for accommodating the circuit board; and the limiting part is configured to prevent the circuit board from being separated from the bracket, the limiting part comprises a first limiting structure, and the first limiting structure is at least matched with the electric connector to limit the displacement of the circuit board in the accommodating part in at least one direction. The utility model further relates to a circuit board assembly for the household appliance and the household appliance. Therefore, according to the bracket, the circuit board can be effectively limited in the accommodating part of the bracket, and the circuit board is prevented from displacing or falling off in at least one direction in the use process, so that the reliability and the stability of the circuit board assembly are improved, adverse stress on the circuit board in the assembly process can be avoided, and the service life of the circuit board assembly is prolonged. The damage risk of the circuit board is reduced, and the assembly efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a bracket for a circuit board assembly, a circuit board assembly for a household appliance, and a corresponding household appliance. Background Art

[0002] With the rapid development of electronic technology and the continuous improvement of people's demands for the intelligence and high performance of household appliance products, the circuit boards in household appliances are developing in the direction of high speed, high frequency, and high density. This has also brought new challenges to the assembly and connection technologies of circuit boards. Snap connection is one of the most commonly used connection methods in the circuit boards of household appliances. It realizes the mechanical fixation of the circuit board and the bearing component by setting snap structures on the circuit board and using the elastic deformation and locking of the snaps. This connection method has the advantages of simple assembly, low cost, easy maintenance, etc., and is widely used in medium and low-speed circuit boards. However, with the increase in the circuit board rate and the component density, some inherent defects and limitations of snap connection have gradually emerged. During the assembly process, the snap structure requires a certain amount of elastic deformation and extrusion force to achieve locking, and this process will bring greater mechanical stress to the circuit board and the electronic components on it. Especially for some precision electronic components, such as field effect transistors, insulated gate bipolar transistors, etc., excessive stress during the assembly process may cause these electronic components to be damaged and fail, seriously affecting the reliability and service life of high-speed circuit boards. Another connection method for circuit boards is the chip-on-board or via-in-pad packaging technology, but this advanced packaging and interconnection technology significantly increases the production cost and technical threshold of the circuit board.

[0003] Therefore, there is still a practical need for continuous improvement in the assembly and connection structures of circuit board assemblies. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide an improved bracket for a circuit board assembly, an improved circuit board assembly for a household appliance, and an improved household appliance to at least solve some problems in the prior art and / or overcome other possible disadvantages not mentioned in this article.

[0005] According to a first aspect of the present utility model, there is provided a bracket for a circuit board assembly, the circuit board assembly including a circuit board having conductive pins and an electrical connector configured to be connected to the conductive pins. The bracket includes: a receiving portion configured to receive the circuit board; and a limiting portion configured to prevent the circuit board from detaching from the bracket. The limiting portion includes a first limiting structure that at least cooperates with the electrical connector to limit the displacement of the circuit board in at least one direction within the receiving portion. Thus, such a bracket can effectively confine the circuit board within the receiving portion of the bracket, avoiding displacement or detachment of the circuit board during use in at least one direction, thereby improving the reliability and stability of the circuit board assembly. At the same time, through the design of the first limiting structure cooperating with the electrical connector, adverse stress on the circuit board during the assembly process can be avoided, reducing the risk of damage to the circuit board, and improving the assembly efficiency and product yield.

[0006] According to an alternative embodiment, the first limiting structure includes an upper limiting member and / or a lower limiting member that limit the electrical connector in the thickness direction of the circuit board. Thus, such a first limiting structure can further limit the displacement of the electrical connector in the direction perpendicular to the plane of the circuit board, thereby more effectively fixing the relative positions of the electrical connector and the circuit board.

[0007] According to an alternative embodiment, the first limiting structure includes limiting side edges that limit the electrical connector on both sides. Thus, such a first limiting structure can further limit the displacement of the electrical connector in the direction parallel to the plane of the circuit board, thereby more effectively fixing the relative positions of the electrical connector and the circuit board. At the same time, by providing limiting side edges on both sides, the electrical connector can be prevented from shifting or sliding in the horizontal direction with reference to the plane of the circuit board, ensuring that the electrical connector always maintains an accurate alignment and connection state with the conductive pins on the circuit board, thereby improving the electrical connection reliability and signal transmission quality of the circuit board assembly.

[0008] According to an alternative embodiment, the first limiting structure further includes a hook protruding from the upper limiting member. Thus, such a hook can engage with the housing of the electrical connector to form a more firm and reliable fixing effect. At the same time, after the hook engages with the electrical connector, it can further limit the displacement of the electrical connector in the direction parallel to the plane of the circuit board, preventing the electrical connector from detaching when subjected to a pulling force. Moreover, the hook structure is simple and can be easily manufactured by means such as die molding, which is beneficial to reducing production costs and improving assembly efficiency.

[0009] According to an alternative embodiment, the first limiting structure further includes a stop portion protruding from the lower limiting member. Thus, such a stop portion can abut against the bottom of the electrical connector facing the circuit board, restricting further displacement of the electrical connector towards the circuit board in a direction parallel to the plane of the circuit board, and playing a role in support and positioning. At the same time, when the electrical connector is under pressure, the force can be transmitted to the bracket through the abutting of the stop portion against the bottom of the electrical connector, avoiding the direct action of the pressure on the circuit board, thereby effectively protecting the circuit board and reducing the risk of failure of the precision electronic components on the circuit board.

[0010] According to an alternative embodiment, the first limiting structure further includes a limiting strip protruding from the limiting side. Thus, such a limiting strip can increase the limiting area of the limiting side on the electrical connector, providing a more stable and reliable limiting effect.

[0011] According to an alternative embodiment, the first limiting structure further includes limiting bottom ribs protruding towards each other from the limiting side. Thus, such limiting bottom ribs can restrict the displacement of the electrical connector in a direction perpendicular to the plane of the circuit board, especially avoiding the situation where the electrical connector is suspended at the bottom, improving the support stability of the electrical connector. At the same time, the limiting bottom ribs facing each other can also form a groove at the bottom of the limiting side for accommodating part of the structure protruding from the bottom of the electrical connector, such as cables.

[0012] According to an alternative embodiment, the hook is configured as an elastic hook. Thus, the elastic characteristics of the hook can be utilized to cause a certain deformation of the hook during the engagement with the electrical connector, thereby obtaining a better fitting and fixing effect. At the same time, the elastic hook also facilitates the assembly and disassembly of the electrical connector.

[0013] According to an alternative embodiment, the stop portion is configured as a stop profile portion matching a part of the outer contour of the electrical connector. Thus, such a stop profile portion can fully match a part of the outer contour of the electrical connector, thereby providing a more stable and reliable support and limiting effect.

[0014] According to an alternative embodiment, there is a gap between the limiting side and the electrical connector. Thus, a clearance fit is formed between the limiting side and the electrical connector, allowing for tolerances and dimensional errors during the manufacturing and assembly of the electrical connector, avoiding interference or jamming with the limiting side due to dimensional deviations of the electrical connector, thereby improving the assembly efficiency and the yield rate of the electrical connector assembly.

[0015] According to an alternative embodiment, there is a gap between the limiting bottom reinforcement and the electrical connector. Thus, a clearance fit is formed between the limiting bottom reinforcement and the electrical connector, avoiding direct contact between the limiting bottom reinforcement and the electrical connector, allowing for tolerances and dimensional errors during the manufacturing and assembly of the electrical connector, and preventing interference or jamming with the limiting bottom reinforcement due to dimensional deviations of the electrical connector, thereby improving the assembly efficiency and yield rate of the electrical connector assembly.

[0016] According to an alternative embodiment, the limiting portion further includes a second limiting structure that at least cooperates with the circuit board to limit the displacement of the circuit board in at least one direction within the receiving portion. Thus, in addition to the first limiting structure that cooperates with the electrical connector, the second limiting structure can achieve more multi-directional limitation of the circuit board, forming a comprehensive and reliable limiting effect.

[0017] According to an alternative embodiment, the bracket further includes at least one vacancy located on the peripheral side of the receiving portion. Thus, such a vacancy can not only reduce the overall volume and weight of the bracket, facilitating miniaturization and lightweighting of the circuit board assembly; but also, by providing a vacancy on the peripheral side of the receiving portion, it is convenient for the assembler to take out or insert the circuit board with fingers or tools.

[0018] According to an alternative embodiment, the second limiting structure includes a bottom side wall that is opposed to the first limiting structure. Thus, such a bottom side wall can form a supporting and limiting plane at the bottom of the circuit board, cooperating with the first limiting structure from above and below. Especially when the circuit board assembly is installed vertically in a household appliance, it can more precisely and reliably limit the position of the circuit board.

[0019] According to an alternative embodiment, the second limiting structure includes a peripheral side wall that limits the circuit board on the side edges. Thus, such a peripheral side wall can form a protective and limiting frame around the circuit board, preventing large displacements or deflections of the circuit board within the plane.

[0020] According to an alternative embodiment, the second limiting structure includes positioning posts configured to cooperate with through holes of the circuit board. Thus, by utilizing the existing through holes on the circuit board, precise positioning and reliable fixation of the circuit board are achieved without the need to open additional positioning holes or structures on the circuit board, thereby simplifying the design and manufacturing process of the circuit board. At the same time, through the cooperation of the positioning posts and the through holes, not only can the movement of the circuit board within the plane be limited, but also the pre-positioning of the circuit board can be assisted, improving the assembly efficiency and consistency.

[0021] According to an alternative embodiment, the second limiting structure further includes a first corner limiting member and / or a second corner limiting member located at the end of the bottom side wall. Thus, the first corner limiting member and / or the second corner limiting member can provide additional limiting and protection effects at the corners of the circuit board. At the same time, through the cooperation of the first corner limiting member and the second corner limiting member with the corners of the circuit board, multi-point limiting of the circuit board in the plane can be achieved, thereby improving the reliability and stability of the circuit board assembly.

[0022] According to an alternative embodiment, the second limiting structure further includes a limiting rib protruding from the bottom side wall and cooperating with the notch of the circuit board. Thus, by utilizing the original notch on the circuit board to cooperate with the limiting rib of the second limiting structure, the movement and rotation of the circuit board in the plane are restricted, and the limiting effect of the circuit board in the plane is improved.

[0023] According to an alternative embodiment, the first corner limiting member and the second corner limiting member are constructed mirror-symmetrically with respect to each other. Thus, the mirror-symmetrically constructed corner limiting members can be symmetrically distributed at the two corners of the circuit board. When an external force acts on the circuit board, symmetric distribution and balanced transmission of stress can be achieved, avoiding stress concentration at a certain corner of the circuit board, thereby improving the reliability and stability of the circuit board assembly. Moreover, the mirror-symmetric construction is beneficial to simplifying the design of the bracket and mold manufacturing, and can reduce production costs and improve production efficiency through methods such as mold reuse or symmetric layout.

[0024] According to an alternative embodiment, the first corner limiting member and / or the second corner limiting member has a protrusion protruding towards the circuit board in the thickness direction of the circuit board. Thus, the limiting effect of the circuit board at the corner position is improved. At the same time, by having the protrusion rather than the entire corner limiting member facing the surface of the circuit board, when the circuit board is subjected to an impact or vibration perpendicular to its plane, the impact area on the circuit board can be reduced, leaving enough installation space for sensitive electronic components.

[0025] According to an alternative embodiment, the protrusion is configured as a linear sharp corner, and there is a gap between the linear sharp corner and the circuit board. Thus, this linear sharp corner can reduce the impact area on the circuit board when the circuit board is subjected to an impact or vibration perpendicular to its plane, while avoiding damage to the circuit board due to excessive impact force; the reserved gap between the protrusion and the circuit board can avoid excessive stress concentration on the circuit board by the protrusion, reduce the wear of the protrusion on the surface of the circuit board, and can also compensate for dimensional errors to a certain extent during the manufacturing and assembly processes of the circuit board, improving the assembly efficiency and yield rate of the circuit board assembly.

[0026] According to a second aspect of the present utility model, there is provided a circuit board assembly for a household appliance, the circuit board assembly including: a circuit board having conductive pins; an electrical connector configured to be connected to the conductive pins; and a bracket for the circuit board assembly provided in any optional embodiment of the above first aspect. Thus, by adopting the bracket with a specific limiting structure provided in the above embodiment, the reliability and stability of the circuit board assembly can be effectively improved, the reliable connection between the circuit board and the electrical connector can be ensured, and the circuit board can be protected from being affected and damaged by external environmental factors such as vibration and impact.

[0027] According to an optional embodiment, the circuit board is electrically connected to a control panel of the household appliance through the electrical connector. Thus, a reliable electrical connection and signal transmission between the circuit board and the control panel can be achieved, ensuring the normal operation and function realization of the household appliance.

[0028] According to an optional embodiment, the circuit board includes a field effect transistor and / or an insulated gate bipolar transistor and / or an antenna element. Thus, by adopting the bracket with a specific limiting structure provided in the above embodiment, the damage risk of these sensitive electronic components can be effectively reduced.

[0029] According to an optional embodiment, the electrical connector has a spring clip type engaging pin that is snapped onto the conductive pin. Thus, the use of a spring clip type engaging pin can achieve a reliable electrical connection and mechanical fixation between the electrical connector and the circuit board, ensuring the integrity and stability of signal transmission. At the same time, the spring clip type structural design can provide necessary contact pressure and elastic compensation during the plugging and unplugging process, effectively adapting to the dimensional tolerance and position deviation between the circuit board and the electrical connector, and improving the reliability of the electrical connection.

[0030] According to an optional embodiment, the electrical connector has an outer contour that at least partially matches the shape of the first limiting structure. Thus, through the matching design of the outer contour of the electrical connector and the first limiting structure of the bracket, a stable and reliable limiting and fixing effect can be formed between the electrical connector and the bracket, preventing the electrical connector from loosening, falling off or shifting in position during use, thereby improving the reliability and service life of the circuit board assembly, and being conducive to the first limiting structure cooperating with the electrical connector to reliably limit the circuit board.

[0031] According to a third aspect of the present utility model, there is provided a household appliance, the household appliance including: a control panel configured to control the operation of the household appliance; and a circuit board assembly for the household appliance provided in any optional embodiment of the above second aspect, the circuit board assembly being electrically connected to the control panel. Thus, by adopting the circuit board assembly provided in the above embodiment and using its bracket with a specific limiting structure, various sensitive components that need to be arranged on the circuit board of the household appliance are advantageously protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present utility model will be described in more detail below by referring to the accompanying drawings, and the principles, features and advantages of the present utility model can be better understood. The accompanying drawings include:

[0033] Figure 1 An illustration of a household appliance according to an exemplary embodiment of the present utility model, shown in the form of a drum washing machine;

[0034] Figure 2 Shows Figure 1 A schematic exploded view of the control panel of the household appliance shown and the circuit board assembly connected thereto;

[0035] Figure 3 Shows Figure 2 A plan view of the circuit board assembly shown;

[0036] Figure 4 Shows Figure 3 A three-dimensional exploded view of the circuit board assembly shown;

[0037] Figure 5 Shows Figure 4 A plan view of the circuit board of the circuit board assembly shown;

[0038] Figure 6 Shows Figure 3 And Figure 4 A partial three-dimensional exploded view of the circuit board assembly shown;

[0039] Figure 7 Shows again Figure 3 A plan view of the circuit board assembly shown;

[0040] Figure 8 Shows a schematic cross-sectional view taken along the cutting line A-A of Figure 7 ;

[0041] Figure 9 Shows a schematic cross-sectional view taken along the cutting line B-B of Figure 7 ;

[0042] Figure 10 Shows a schematic cross-sectional view taken along the cutting line C-C of Figure 7 ;

[0043] Figure 11 Shows a schematic cross-sectional view taken along the cutting line D-D of Figure 7 ;

[0044] Figure 12 Shows Figure 11 An enlarged view of part E of;

[0045] Figure 13 shows a schematic partial perspective view observed from the viewing direction F of Figure 12 ; and

[0046] Figure 14 shows a schematic plan view observed from the viewing direction G of Figure 7 .

[0047] Reference numerals:

[0048] 2000: household appliance; 2001: control panel; 1000: circuit board assembly; 900: circuit board; 901: conductive contact pin; 902: through hole; 903: notch; 904: corresponding recess; 910: lower side edge; 920: upper side edge; 800: electrical connector; 801: leaf spring type engaging contact pin; 700: bracket; 710: receiving portion; 720: limiting portion; 730: vacancy; 100: first limiting structure; 110: upper limiting member; 111: hook; 120: lower limiting member; 121: stopping portion; 130: limiting side edge; 131: limiting strip; 132: limiting bottom rib; 200: second limiting structure; 210: bottom side wall; 211: first corner limiting member; 212: second corner limiting member; 213: limiting rib; 220: peripheral side wall; 230: positioning post; 10: protrusion; x: width direction of the circuit board; y: length direction of the circuit board; z: thickness direction of the circuit board. Detailed implementation manners

[0049] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, rather than to limit the protection scope of the present utility model, and each embodiment may be described using the same view or multiple views, but all the features appearing in the same view cannot be interpreted as the features that must be possessed by an embodiment.

[0050] Before starting the description, it should be noted that, for convenience, this article may use azimuth terms or direction terms for description. These azimuth terms or direction terms are relative to the normal use state of the household appliance or its circuit board. Those skilled in the art can clearly understand this from the description of the present utility model without any confusion. In this case, the azimuth terms and direction terms should not be simply interpreted as the azimuth or direction in any state. That is to say, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "transverse", "high", "front", "back", etc. in the description of the present utility model indicate the azimuth or position relationship based on the azimuth or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and therefore should not be construed as a limitation to the present utility model.

[0051] For ease of understanding, the description made in the background art part of the present utility model can be recalled or recollected here. One of the purposes of the present utility model is to provide an improved bracket for a circuit board assembly, the circuit board assembly including a circuit board having conductive pins and an electrical connector configured to be connected to the conductive pins, the bracket including: a receiving portion configured to receive the circuit board; and a limiting portion configured to prevent the circuit board from detaching from the bracket, the limiting portion including a first limiting structure, the first limiting structure at least cooperating with the electrical connector to limit the displacement of the circuit board in at least one direction within the receiving portion. Thus, such a bracket can effectively confine the circuit board within the receiving portion of the bracket, avoiding displacement or detachment of the circuit board during use in at least one direction, thereby improving the reliability and stability of the circuit board assembly. At the same time, through the design of the cooperation between the first limiting structure and the electrical connector, adverse stress on the circuit board during the assembly process can be avoided, the risk of damage to the circuit board is reduced, and the assembly efficiency and product yield are improved.

[0052] Figure 1 Fig. shows a household appliance 2000 according to an exemplary embodiment of the present utility model, which is shown in the form of a drum washing machine, but it should be understood that the embodiments according to the present utility model can also be applied to other household appliances, such as a washer-dryer, a dishwasher or a range hood. Figure 1 The xyz coordinate system of the household appliance 2000 is schematically shown, wherein x represents the width direction of the household appliance 2000, y represents the height direction of the household appliance 2000, and z represents the depth direction of the household appliance 2000. For clarity, in the subsequent part of the drawings, this xyz coordinate system is basically referred to for display and description. As Figure 1As shown, the household appliance 2000 includes a control panel 2001 for controlling the operation of the household appliance 2000.

[0053] Figure 2 As shown Figure 1 A schematic exploded view of the control panel 2000 of the household appliance 1000 shown and the circuit board assembly 1000 connected thereto; Figure 3 As shown Figure 2 A plan view of the circuit board assembly 1000 shown; Figure 4 As shown Figure 3 A three-dimensional exploded view of the circuit board assembly 1000 shown.

[0054] As Figure 2 shown, the household appliance 1000 further includes a circuit board assembly 1000, which can be used, for example, to transmit (send and / or receive) radio signals (such as WIFI signals). The circuit board assembly 1000 is electrically connected to the control panel 2001 for signal transmission with other electronic devices of the control panel 2001. As Figure 3 Combined with Figure 4 shown, the circuit board assembly 1000 includes a circuit board 900, an electrical connector 800, and a bracket 700. Among them, the circuit board 900 is electrically connected to the control panel 2001 of the household appliance 2000 through the electrical connector 800. Here, the circuit board 900 is, for example, configured as a high-speed circuit board, and the electrical connector 800 is, for example, configured as a plug or terminal for power supply or signal transmission with other electronic devices of the control panel 2001. It can be seen from Figures 1 to 4 the xyz coordinate system that it can also be understood that: x also represents the width direction of the circuit board 900, y represents the length direction of the circuit board 900, and z represents the thickness direction of the circuit board. As Figure 4 Schematically shown, the bracket 700 can be configured as an integrally molded part made of plastic.

[0055] As Figure 3 Combined with Figure 4 shown, the circuit board 900 has conductive pins 901, and the electrical connector 800 is connected to the conductive pins 901. The electrical connector 800, for example, has spring-clip engaging pins 801 that cooperate with the conductive pins 901, and these spring-clip engaging pins 801 are elastically retractable and snap-connected to the conductive pins 901, thereby realizing a firm mechanical and electrical connection between the electrical connector 800 and the circuit board 900. It can be seen from Figure 4It can be seen that the bracket 700 has a receiving portion 710 for receiving the circuit board 900. To prevent the circuit board 900 from detaching from the bracket 700, the bracket 700 further has a limiting portion 720. The limiting portion 720 includes a first limiting structure 100, and the first limiting structure 100 restricts the displacement of the circuit board 900 in at least one direction within the receiving portion 710 in cooperation with at least the electrical connector 800. To better cooperate with the first limiting structure 100, the electrical connector 800 preferably has an outer contour that at least partially matches the shape of the first limiting structure 100.

[0056] Figure 5 shows Figure 4 a plan view of the circuit board 900 of the circuit board assembly 1000 shown; Figure 6 shows Figure 3 and Figure 4 a partial perspective exploded view of the circuit board assembly 1000 shown; Figure 7 shows again Figure 3 a plan view of the circuit board assembly 1000 shown; Figure 8 shows a schematic cross-sectional view taken along the cutting line A-A of Figure 7 ; Figure 9 shows a schematic cross-sectional view taken along the cutting line B-B of Figure 7 ; Figure 10 shows a schematic cross-sectional view taken along the cutting line C-C of Figure 7 ; Figure 11 shows a schematic cross-sectional view taken along the cutting line D-D of Figure 7 ; Figure 12 shows Figure 11 a partial enlarged view of E of Figure 13 shows a schematic partial perspective view observed from the viewing direction F of Figure 12 ; and Figure 14 shows a schematic plan view observed from the viewing direction G of Figure 7 ;

[0057] As Figure 8 combined with Figure 3 and Figure 7 shown, the first limiting structure 100 may include an upper limiting member 110 and a lower limiting member 120. Both the upper limiting member 110 and the lower limiting member 120 can limit the electrical connector 800 in the thickness direction z of the circuit board 900, that is, restrict the movement of the electrical connector 800 in the thickness direction z of the circuit board 900. It can be seen from Figure 8 that the first limiting structure 100 may further include a hook 111 protruding from the upper limiting member 110 to hook the electrical connector 800 to prevent the electrical connector 800 (based on Figure 8in the upward direction of the orientation) disengages from the bracket 700. Correspondingly, the first limiting structure 100 may further include a stop portion 121 protruding from the lower limiting member 120 to hold the electrical connector 800 and prevent the electrical connector 800 (based on Figure 8 in the downward direction of the orientation) from moving towards the circuit board 900 and transferring the stress it receives to the circuit board 900 undesirably. When the circuit board assembly 1000 is electrically connected to the control panel 2001 of the household appliance 2000 shown in Figure 2 the shown orientation and Figure 1 the control panel 2001 of the household appliance 2000, the stop portion 121 can also play a role in bearing at least part of the weight of the electrical connector 800. Thus, the translational movement of the electrical connector 800 in the length direction y of the circuit board 900 is restricted by the hook 111 and the stop portion 121 of the first limiting structure 100. Here, the hook 111 is preferably configured as an elastic hook, and the stop portion 121 is preferably configured as a stop profile portion matching a part of the outer contour of the electrical connector 800 (as shown in Figure 8 in combination with Figure 4 the shown figure). Here, since the electrical connector 800 usually has a plastic housing, the electrical connector 800 itself can withstand the clamping force from the hook 111, and especially due to the stop of the stop portion 121, this clamping force will not be transmitted to the circuit board 900, thus protecting the precision electronic components on the circuit board 900 from being damaged and failing easily.

[0058] As shown in Figure 14 in combination with Figure 3 and Figure 7 the shown figure, the first limiting structure 100 may include limiting side edges 130 that limit the electrical connector 800 on both sides, and these two limiting side edges 130 can limit the movement of the electrical connector 800 in the width direction x of the circuit board 900. As shown in Figure 3 and Figure 4 and also Figure 6 and Figure 10 the shown figure, the first limiting structure 100 may further include limiting strip pieces 131 protruding from the limiting side edges 130, and the limiting strip pieces 131 cooperate with the corresponding recesses 904 of the circuit board 900 at the same time (also refer to Figure 5 ). As shown in Figure 4 and Figure 14 the shown figure, the first limiting structure 100 may further include limiting bottom ribs 132 protruding towards each other from the limiting side edges 130. Especially from Figure 14 in combination with Figure 8 it can be seen that through the upper limiting member 110, the two limiting side edges 130 and the limiting bottom ribs 132 protruding towards each other of the first limiting structure 100, five of the six degrees of freedom of movement of the electrical connector 800 have been restricted. From Figure 14It can be schematically seen that whether it is the limiting side edges 130 on both sides or the limiting bottom bars 132 below, there are gaps between them and the electrical connector 800. This enables the electrical connector 800 to have five degrees of freedom of movement restricted, but there will be no serious interference around it, facilitating installation and disassembly. In addition to Figure 8 As shown, the translational movement of the electrical connector 800 in the length direction y of the circuit board 900 is restricted by the hook 111 and the stop portion 121 of the first limiting structure 100, and all six degrees of freedom of movement of the electrical connector 800 are restricted. Since the electrical connector 800 is snap-connected to the conductive contact 901 of the circuit board 900 by the elastic contact feet 801, to a certain extent, the circuit board 900 is also restricted in six degrees of freedom of movement.

[0059] From Figure 6 it can be seen that the bracket 700 further includes at least one vacancy 730 on the peripheral side of the accommodating portion 710, and the minimum size of the vacancy 730 can correspond to the size of the finger pulp, for example, so that the installer can use a finger or a small tool to take out or put in the circuit board 900. Thus, while protecting various peripheral sensitive electronic components on the circuit board 900 as much as possible on the peripheral side of the accommodating portion 710, it still allows a machine or a human to act on the side portion of the circuit board 900 without sensitive electronic components through the vacancy 730 (and its opposite completely open side as Figure 6 exemplarily shown).

[0060] From Figure 4 and Figure 6 it can be seen that in addition to the first limiting structure 100 that cooperates with the electrical connector 800, the limiting portion 720 further includes a second limiting structure 200. The second limiting structure 200 cooperates with at least the circuit board 900 and is used to limit the displacement of the circuit board 900 in at least one direction within the accommodating portion 710 together with the first limiting structure 100. The second limiting structure 200 may specifically include a bottom side wall 210, a peripheral side wall 220, and a positioning post 230. As Figure 4 shown, the bottom side wall 210 is opposed to the first limiting structure 100, the peripheral side wall 220 limits the circuit board 900 on the side, and in combination with Figure 9 , the positioning post 230 is configured to cooperate with the through hole 902 of the circuit board 900, that is, to penetrate into the through hole 902. Figure 5 Exemplarily shows the position where the through hole 902 of the circuit board 900 is located. As Figure 3 and Figure 4 shown, the second limiting structure 200 may further include a first corner limiting member 211 and a second corner limiting member 212. The first corner limiting member 211 and the second corner limiting member 212 are preferably located at two opposed ends of the bottom side wall 210 respectively and are constructed mirror images of each other. From Figure 11 , Figure 12 andFigure 13 As can be seen, the first corner limiting member 211 and / or the second corner limiting member 212 have a protrusion 10 protruding towards the circuit board 900 in the thickness direction z of the circuit board 900. The protrusion 10 is preferably configured as a linear sharp corner as schematically shown and has a gap with the circuit board 900, and this gap is, for example, 0.1 mm to 0.2 mm. Figure 13 As schematically shown and has a gap with the circuit board 900, and this gap is, for example, 0.1 mm to 0.2 mm.

[0061] Further preferably, the second limiting structure 200 may further include a limiting rib 213. As Figure 3 and Figure 11 shown, the limiting rib 213 protrudes from the bottom side wall 210 and cooperates with the notch 903 of the circuit board 900. Figure 5 The position where the notch 903 of the circuit board 900 is located is exemplarily shown. The through hole 902, the notch 903 and the corresponding recess 904 of the circuit board 900 are, for example, configured as assembly parts originally required for the circuit board 900 on the production line. As Figure 5 can be schematically seen, the circuit board 900 includes a field effect transistor and / or an insulated gate bipolar transistor and / or an antenna element. These electronic components are not only densely assembled but also extremely sensitive.

[0062] In a preferred embodiment, the assembly of the circuit board assembly 1000 can be achieved through the following steps: First, the lower side 910 of the circuit board 900 facing the conductive pins 901 is inserted obliquely towards the first corner limiting member 211 and the second corner limiting member 212 until it abuts against the bottom side wall 210. At this time, the limiting rib 213 also cooperates with the notch 903 of the circuit board 900. Then, the upper side 920 where the conductive pins 901 are located is lowered towards the accommodating portion 710 of the bracket 700, so that the positioning posts 230 of the bracket 700 pass through the through holes 902 of the circuit board 900 and the limiting strip 131 is inserted into the corresponding recess 904 to complete the cooperation between the circuit board 900 and the bracket 700. Finally, the electrical connector 800 is cooperated with the first limiting structure 100 and the circuit board 900, that is, it is inserted into the space formed by the upper limiting member 110, the lower limiting member 120 and the limiting side 130 of the first limiting structure 100 until the elastic snap contact 801 of the electrical connector 800 is snapped onto the conductive pin 901 of the circuit board 900. Thus, the displacement of the circuit board 900 in the accommodating portion 710 of the bracket 700 is restricted in all six degrees of freedom of movement, and thus the circuit board assembly 1000 realizes its own stable assembly. Here, except for the snap-fit cooperation that originally needs to exist between the elastic snap contact 801 of the electrical connector 800 and the conductive pin 901 of the circuit board 900, there is no snap-fastening means in the assembly process of the circuit board assembly 1000 that may damage the precision electronic components on the circuit board 900. Therefore, by using the bracket 700 provided in the embodiment of the present invention, the circuit board 900 carrying these dense electronic components can be limited in the accommodating portion 710 of the bracket 700 without directly snap-fastening the circuit board 900, significantly reducing the possibility of failure of these extremely sensitive electronic components.

[0063] For those skilled in the art, other advantages and alternative embodiments of the present invention are obvious. Therefore, the present invention in its broader sense is not limited to the specific details, representative structures and exemplary embodiments shown and described. Those skilled in the art can make various modifications and substitutions without departing from the basic spirit and scope of the present invention.

Claims

1. A bracket for a circuit board assembly, the circuit board assembly (1000) comprising a circuit board (900) having a conductive contact pin (901) and an electrical connector (800) configured to be connected to the conductive contact pin (901), characterized in that: The bracket (700) comprises: a receiving portion (710) configured to receive the circuit board (900); and A limiting portion (720) is constructed to prevent the circuit board (900) from escaping from the bracket (700), the limiting portion (720) comprising a first limiting structure (100), the first limiting structure (100) at least cooperating with the electrical connector (800) to limit the displacement of the circuit board (900) in at least one direction within the accommodating portion (710).

2. The bracket for a circuit board assembly according to claim 1, characterized in that: The first limiting structure (100) comprises: An upper limit member (110) and / or a lower limit member (120) for limiting the electrical connector (800) in the thickness direction (z) of the circuit board (900); and / or Limiting side edges (130) for limiting the electrical connector (800) on both sides.

3. The bracket for a circuit board assembly according to claim 2, characterized in that: The first limiting structure (100) further comprises: A hook (111) protruding from the upper limit member (110); and / or a stopper (121) protruding from the lower stopper (120); and / or a limiting strip (131) protruding from the limiting side edge (130); and / or Limiting bottom ribs (132) protrude from the limiting side edges (130) toward each other.

4. The bracket for a circuit board assembly according to claim 3, characterized in that: The hook (111) is configured as an elastic hook; and / or The stop portion (121) is configured as a stop contour portion that matches a portion of the outer contour of the electrical connector (800); and / or There is a gap between the limiting side edge (130) and the electrical connector (800); and / or There is a gap between the limiting bottom rib (132) and the electrical connector (800).

5. The bracket for a circuit board assembly according to any one of claims 1 to 4, characterized in that: The limiting portion (720) further comprises a second limiting structure (200), wherein the second limiting structure (200) at least cooperates with the circuit board (900) to limit the displacement of the circuit board (900) in at least one direction within the accommodating portion (710); and / or The bracket (700) further includes at least one opening (730) located on a peripheral side of the receiving portion (710).

6. The bracket for a circuit board assembly according to claim 5, characterized in that: The second limiting structure (200) comprises: a bottom retaining wall (210) opposite to the first limiting structure (100); and / or A peripheral retaining wall (220) for limiting the position of the circuit board (900) on the side edge; and / or A positioning post (230) is configured to cooperate with a through hole (902) of the circuit board (900).

7. The bracket for a circuit board assembly according to claim 6, characterized in that: The second limiting structure (200) further includes: a first corner stopper (211) and / or a second corner stopper (212) located at the end of the bottom retaining wall (210); and / or A limiting rib (213) protruding from the bottom retaining wall (210) and cooperating with the notch (903) of the circuit board (900).

8. The bracket for a circuit board assembly according to claim 7, characterized in that: The first corner stopper (211) and the second corner stopper (212) are constructed in a mirror-like manner to each other; and / or The first corner stopper (211) and / or the second corner stopper (212) comprises a protrusion (10) protruding toward the circuit board (900) in a thickness direction (z) of the circuit board (900).

9. The bracket for a circuit board assembly according to claim 8, characterized in that: The protrusion (10) is configured as a linear sharp corner, and a gap is provided between the linear sharp corner and the circuit board (900).

10. A circuit board assembly for household appliances, characterized in that: The circuit board assembly (1000) comprises: A circuit board (900), wherein the circuit board (900) has a conductive contact pin (901); An electrical connector (800) configured to be connected to the conductive contact pin (901); and A bracket for a circuit board assembly according to any one of claims 1 to 9.

11. The circuit board assembly for household appliances according to claim 10, characterized in that: The circuit board (900) is electrically connected to the control panel (2001) of the household appliance (2000) via the electrical connector (800); and / or The circuit board (900) comprises a field effect transistor and / or an insulated gate bipolar transistor and / or an antenna element; and / or The electrical connector (800) has a spring-type snap-fit ​​contact pin (801) snap-fitted to the conductive contact pin (901); and / or The electrical connector (800) has an outer contour that at least partially matches the shape of the first limiting structure (100).

12. A household appliance, characterized in that: The household appliance (2000) comprises: a control panel (2001) configured to control the operation of the household appliance (2000); and According to the circuit board assembly for a household appliance according to claim 10 or 11, the circuit board assembly (1000) is electrically connected to the control panel (2001).

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