Circuit board assembly and gas cooker with same

Abstract

A circuit board assembly and a gas cooker with the circuit board assembly, the circuit board assembly comprising: a circuit board having a first panel, the first panel facing upward; the box body is provided with a bottom wall and side walls extending upwards from the periphery of the bottom wall, and the side walls and the bottom wall jointly define a containing cavity with an upward opening so that the circuit board can be arranged in the containing cavity through the opening; a U-shaped hole penetrating through the wall thickness is formed in the side wall of the box body, a tongue piece is formed by the portion surrounded by the U-shaped hole, a first buckle is arranged on the inner side face, opposite to the circuit board, of the tongue piece in a protruding mode, and the first buckle is located above the circuit board so as to limit the circuit board to move upwards; meanwhile, the tongue piece is arranged to be capable of bending and deforming outwards relative to the side wall, where the tongue piece is located, of the box body under the action of external force, so that the first buckle relieves constraint on the circuit board. Compared with the prior art, the circuit board can be restrained in the box body without screws, and the circuit board is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of household stoves, and in particular relates to a circuit board assembly and a gas stove with the circuit board assembly. Background Art

[0002] With the increasing application of gas smart stoves, the application and reliable installation of the electric control board on the smart stoves are becoming more and more important. The circuit boards and components involved in the electric control board are mostly installed in a plastic box by screws to form a reliable installation. However, the screw fixing structure has the following defects: first, it makes the plastic box too bulky; second, the screws are poorly removable and inconvenient for maintenance; third, a large number of screws are used on the circuit board, which is easy to cause a short circuit on the circuit board. Utility Model Content

[0003] The first technical problem to be solved by the utility model is to provide a circuit board assembly which can constrain the circuit board in the box body without using screws in view of the current status of the prior art.

[0004] The second technical problem to be solved by the utility model is to provide a gas cooker with the above circuit board assembly.

[0005] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a circuit board assembly, including:

[0006] The circuit board has a first board surface, and the first board surface is oriented upward;

[0007] The box body comprises a bottom wall and side walls extending upward from the periphery of the bottom wall, wherein the side walls and the bottom wall together define a cavity with an opening facing upward, so that the circuit board can be placed therein through the opening;

[0008] Features:

[0009] The side wall of the box body is provided with a U-shaped hole penetrating through the wall thickness, and the portion surrounded by the U-shaped hole constitutes a tongue piece. The inner side surface of the tongue piece opposite to the circuit board is convexly provided with a first buckle, and the first buckle is located above the circuit board to limit the upward movement of the circuit board; at the same time, the tongue piece is arranged to bend and deform outwardly relative to the side wall of the box body where the tongue piece is located under the action of an external force, so that the first buckle releases the constraint on the circuit board.

[0010] In this way, the first buckle located above the circuit board can limit the circuit board from moving upward and leaving the box body, thereby limiting the position of the circuit board; when the circuit board needs to be removed, the tongue piece can be rotated outward to release the first buckle from the constraint on the circuit board, making the operation easier. Therefore, the utility model can realize the positioning of the circuit board and facilitate the disassembly and assembly of the circuit board.

[0011] Preferably, the first buckle abuts against the first surface of the circuit board in the upper and lower parts, so that the first buckle can press the circuit board tightly into the box body to prevent the circuit board from shaking.

[0012] To facilitate the installation of the circuit board, preferably, the first buckle has:

[0013] A guide surface opposite to the tongue piece where the first buckle is located, the guide surface being inclined inward from top to bottom;

[0014] A bottom surface extends outward from the lower edge of the guide surface, and the bottom surface is opposite to the first board surface of the circuit board.

[0015] In this way, during installation, the edge of the circuit board acts on the guide surface of the first buckle and moves downward. At this time, due to the inclined design of the guide surface, the tongue piece automatically bends outward under the action of the circuit board moving downward. After the circuit board is installed in place, the tongue piece is reset, and the first buckle on the tongue piece is constrained above the circuit board. That is, the circuit board can be installed by directly moving it downward, which is convenient for operation.

[0016] Preferably, the U-shaped opening of the U-shaped hole faces downward, the tongue piece extends upward, and the upper end of the tongue piece is a free end and is provided with the above-mentioned first buckle, and the lower end of the tongue piece is integrally connected to the side wall of the box body.

[0017] Furthermore, a perforation penetrating the wall thickness is provided at a position corresponding to the tongue piece on the periphery of the bottom wall of the box body, and the projection of the first buckle on the horizontal plane is located inside the perforation. In this way, the perforation design facilitates mold closing and demoulding during production.

[0018] In the above solution, preferably, a support member is protruding from the bottom wall of the box body, the support member is located below the first buckle, and the circuit board is placed on the support member with a gap between the support member and the bottom wall of the box body.

[0019] Furthermore, the support is in the form of a sheet, erected at the periphery of the bottom wall of the box body, intersecting and engaging with the side wall of the box body; and there are at least two support members, which are arranged at intervals along the periphery of the bottom wall of the box body. In this way, the support member can support the circuit board and also serve as a reinforcing rib to improve the strength of the box body.

[0020] In order to better constrain the circuit board, further, a limiting column extending upward is provided on the bottom wall of the box body, and a limiting hole for the limiting column to pass through is provided on the circuit board. The cooperation between the limiting column and the limiting hole facilitates the installation and positioning of the circuit board.

[0021] In the above schemes, preferably, the tongue piece and the first buckle on the tongue piece form a group, and there are at least two groups, which are respectively arranged on the side walls of the box body on both sides of the circuit board.

[0022] Preferably, the box further comprises a cover body, which is arranged on the opening of the box body.

[0023] To facilitate installation and removal of the cover, preferably, a second buckle is convexly provided on the outer side surface of the side wall of the box body;

[0024] The cover body comprises a top cover, a connecting plate extending downward from the edge of the top cover and located outside the side wall of the box body, and the connecting plate is provided with a clamping hole penetrating through the plate thickness for the second buckle to be clamped in.

[0025] Preferably, there are at least two second buckles, which are arranged on the side walls of the box body on both sides of the circuit board. The number of the buckle holes matches the number of the second buckles, and each buckle hole corresponds to its own second buckle setting.

[0026] Furthermore, the second buckles and the first buckles are arranged alternately in the circumferential direction.

[0027] Preferably, a reinforcing rib extending inward is provided on the connection plate near the clip hole, and the inner end of the reinforcing rib is opposite to the side wall of the box body, and the two are adjacent to or in contact with each other. In this way, the provision of the reinforcing rib can effectively compensate for the problem of the clip installation gap and ensure a tight and reliable fit.

[0028] Preferably, the cover body is provided with an indicator hole which passes through from top to bottom, and the indicator hole is used for light display after the corresponding function is triggered.

[0029] Preferably, the cover body is provided with a glue overflow hole which runs through from top to bottom, and the hole diameter of the glue overflow hole is 1.2-1.8 mm. In this way, when glue such as silicone glue is needed, the glue overflow hole can ensure that the glue layer is fully adhered and can be visually judged by the amount of glue overflow.

[0030] The technical solution adopted by the utility model to solve the second technical problem is: a gas cooker, characterized by having the circuit board assembly as described above.

[0031] Preferably, the gas cooker further comprises:

[0032] panel;

[0033] A burner is arranged on the panel, and the burner is provided with a probe for detecting the temperature of the bottom of the pot;

[0034] The circuit board assembly is arranged below the panel, and the input end of the circuit board is electrically connected to the output end of the probe.

[0035] Compared with the prior art, the advantages of the present invention are: a tongue is formed by setting a U-shaped hole on the side wall of the box body, and a first buckle is convexly provided on the inner side of the tongue. The first buckle located above the circuit board can limit the circuit board from moving upward and leaving the box body, thereby limiting the position of the circuit board; when the circuit board needs to be removed, the tongue can be rotated outward to release the first buckle from the constraint on the circuit board, making the operation easier. Therefore, the present invention can realize the positioning of the circuit board and facilitate the assembly and disassembly of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the circuit board assembly in the embodiment of the utility model (the cover body is arranged on the box body);

[0037] Figure 2 It is a structural schematic diagram of the circuit board assembly in another perspective in the embodiment of the utility model;

[0038] Figure 3 This is a structural schematic diagram of the circuit board assembly in another perspective of the embodiment of the utility model;

[0039] Figure 4 This is a schematic diagram of the structure of the circuit board assembly in the embodiment of the utility model (the cover is separated from the box body);

[0040] Figure 5 This is a three-dimensional exploded view of a circuit board assembly in an embodiment of the present utility model;

[0041] Figure 6 is a cross-sectional view of a circuit board assembly in an embodiment of the utility model;

[0042] Figure 7 Another cross-sectional view of the circuit board assembly in the embodiment of the utility model;

[0043] Figure 8 This is a schematic diagram of the structure of a gas cooker in an embodiment of the utility model;

[0044] Fig. 9 This is a schematic diagram of the partial structure of the gas cooker in another perspective of the embodiment of the utility model (the chassis is omitted);

[0045] Fig.10 It is a cross-sectional view of a gas cooker in an embodiment of the utility model. DETAILED DESCRIPTION

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] like Figures 1 to 10 As shown, a preferred embodiment of a circuit board assembly and a gas cooker having the circuit board assembly of the utility model is shown. The circuit board assembly includes a circuit board 1, a box body 2 and a cover body 3.

[0048] The circuit board 1 has a first board surface 11 facing upward.

[0049] The box body 2 comprises a bottom wall 21 and side walls 22 extending upward from the periphery of the bottom wall 21 . The side walls 22 and the bottom wall 21 together define a cavity with an opening facing upward, so that the circuit board 1 can be placed therein through the opening.

[0050] And, if Figures 5 to 7 As shown, a support member 211 is protruded on the bottom wall 21 of the box body 2. The support member 211 is in the shape of a sheet and is vertically arranged at the periphery of the bottom wall 21 of the box body, intersecting and engaging with the side wall 22 of the box body; and there are at least two support members 211, which are arranged at intervals along the periphery of the bottom wall 21 of the box body, so that the circuit board 1 can be placed on each support member 211, and a gap is left between the support members 211 and the bottom wall 21 of the box body. Figure 4 , 5 As shown in Figures 7, in order to facilitate the installation and positioning of the circuit board, a limiting column 212 extending upward is provided on the bottom wall 21 of the box body, and a limiting hole 10 for the limiting column 212 to pass through is provided on the circuit board 1.

[0051] The side wall 22 of the box body 2 is provided with a U-shaped hole 220 that penetrates the wall thickness. The U-shaped opening of the U-shaped hole 220 faces downward. The portion surrounded by the U-shaped hole 220 constitutes a tongue piece 221 that extends upward. The upper end of the tongue piece 221 is a free end, and the lower end of the tongue piece 221 is connected to the box body side wall 22 as a whole. In addition, a first buckle 23 is convexly provided on the inner side surface of the upper part of the tongue piece 221 that is opposite to the circuit board 1. The first buckle 23 is located above the circuit board 1 and has a guide surface 231 that is opposite to the tongue piece 221 where the first buckle 23 is located and is inclined inward from top to bottom, and a bottom surface 232 that extends outward from the lower edge of the guide surface 231. The bottom surface 232 is opposite to and fits with the first board surface 11 of the circuit board 1, thereby limiting the upward movement of the circuit board 1. In addition, the tongue piece 221 can be bent and deformed outward relative to the box body side wall 22 where the tongue piece 221 is located under the action of external force, so that the first buckle 23 releases the constraint on the circuit board 1. The tongue piece 221 and the first buckle 23 on the tongue piece 221 form a group, and there are two groups, which are respectively arranged on the side walls 22 of the box body on both sides of the circuit board 1. The positions corresponding to each tongue piece 221 on the periphery of the bottom wall 21 of the box body are provided with through holes 210 penetrating the wall thickness, and the projection of the first buckle 23 on the horizontal plane is located inside the corresponding through hole 210.

[0052] In this way, when installing the circuit board 1, the edge of the circuit board 1 acts on the guide surface 231 of the first buckle 23 and moves downward. At this time, due to the inclined design of the guide surface 231, the tongue piece 221 automatically bends outward under the action of the circuit board 1 moving downward. After the circuit board 1 is supported on the support member 211 and installed in place, the tongue piece 221 is reset, and the first buckle 23 on the tongue piece 221 is constrained above the circuit board 1. That is, the circuit board 1 can be installed by directly moving it downward, which is convenient for operation.

[0053] The cover body 3 is disposed on the opening of the box body 2 and comprises a top cover 31 and a connecting plate 32 extending downward from the edge of the top cover 31 and located outside the box body side wall 22 .

[0054] The top cover 31 is provided with an indication hole 311 and a glue overflow hole 312 which are through-through from top to bottom. The diameter of the glue overflow hole 312 is 1.2-1.8 mm, which is smaller than the diameter of the indication hole 311.

[0055] The connecting plate 32 is provided with a clamping hole 320 that penetrates the plate thickness, and the outer side surface of the side wall 22 of the box body 2 is convexly provided with a second clamping buckle 24, and the second clamping buckle 24 is clamped in the clamping hole 320. There are two second clamping buckles 24, which are arranged on the box body side walls 22 on both sides of the circuit board 1, and are arranged alternately with the first clamping buckle 23 in the circumferential direction. There are also two clamping holes 320, which are respectively arranged corresponding to the respective second clamping buckles 24. In addition, the position near each clamping hole 320 on the connecting plate 32 is provided with a reinforcing rib 321 extending inward, and the inner end of the reinforcing rib 321 is opposite to the corresponding box body side wall 22, and the two are adjacent or fitted. The two reinforcing ribs 321 are arranged obliquely on both sides of the connecting plate, which can ensure the shaking amount of the box body and the cover body, and can also adaptively adjust the clearance between the box body and the cover body.

[0056] Therefore, in this embodiment, the cover body 3 and the box body 2 are snap-fitted, which is convenient for disassembly and assembly, and has a fool-proof function.

[0057] like Figures 8 to 10 As shown, the gas cooker of this embodiment includes a chassis 7, a panel 4 covered on the chassis 7, a burner 5 and the above-mentioned circuit board assembly. The burner 5 is a prior art and is arranged on the panel 4. The burner 5 is provided with a probe 6 for detecting the temperature of the bottom of the pot. The circuit board assembly is arranged in the chassis 7 below the panel 4. The input end of the circuit board 1 is electrically connected to the output end of the probe 6. The cover 3 is attached to the lower surface of the panel 4, and the panel 4 is made of light-transmitting glass. In this way, the light transmitted through the indicator hole 311 can pass through the panel 4 and be seen by the user.

[0058] In the specification and claims of the present invention, terms indicating directions, such as "upper", "lower", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A circuit board assembly, comprising: A circuit board (1) having a first board surface (11), wherein the first board surface (11) is oriented upward; The box body (2) comprises a bottom wall (21) and a side wall (22) extending upward from the periphery of the bottom wall (21), wherein the side wall (22) and the bottom wall (21) together define a cavity with an opening facing upward, so that the circuit board (1) can be placed therein through the opening; Features: The side wall (22) of the box body (2) is provided with a U-shaped hole (220) penetrating the wall thickness; the portion surrounded by the U-shaped hole (220) constitutes a tongue piece (221); the inner side surface of the tongue piece (221) opposite to the circuit board (1) is provided with a first buckle (23); the first buckle (23) is located above the circuit board (1) to limit the upward movement of the circuit board (1); and the tongue piece (221) is arranged to bend outwardly relative to the box body side wall (22) where the tongue piece (221) is located under the action of an external force, so that the first buckle (23) releases the constraint on the circuit board (1).

2. The circuit board assembly according to claim 1, characterized in that: The first buckle (23) abuts against the first board surface (11) of the circuit board (1) in upper and lower positions.

3. The circuit board assembly according to claim 1, wherein: The first buckle (23) has: A guide surface (231) opposite to the tongue piece (221) where the first buckle (23) is located, wherein the guide surface (231) is inclined inward from top to bottom; A bottom surface (232) extends outward from the lower edge of the guide surface (231), and the bottom surface (232) is opposite to the first board surface (11) of the circuit board (1).

4. The circuit board assembly according to claim 1, wherein: The U-shaped opening of the U-shaped hole (220) faces downward, the tongue piece (221) extends upward, and the upper end of the tongue piece (221) is a free end and is provided with the above-mentioned first buckle (23), and the lower end of the tongue piece (221) is connected to the side wall (22) of the box body.

5. The circuit board assembly according to claim 4, characterized in that: A through hole (210) penetrating the wall thickness is provided at a position corresponding to the tongue piece (221) on the periphery of the bottom wall (21) of the box body, and the projection of the first buckle (23) on the horizontal plane is located inside the through hole (210).

6. The circuit board assembly according to claim 1, characterized in that: A support member (211) is protruding from the bottom wall (21) of the box body (2), and the support member (211) is located below the first buckle (23). The circuit board (1) is placed on the support member (211) with a gap between the support member (211) and the bottom wall (21) of the box body.

7. The circuit board assembly according to claim 6, characterized in that: The support member (211) is in sheet form, erected at the periphery of the bottom wall (21) of the box body, intersecting and engaging with the side wall (22) of the box body; and there are at least two support members (211) which are spaced apart along the periphery of the bottom wall (21) of the box body.

8. The circuit board assembly according to claim 6, characterized in that: A limiting column (212) extending upward is provided on the bottom wall (21) of the box body (2), and a limiting hole (10) for the limiting column (212) to pass through is provided on the circuit board (1).

9. The circuit board assembly according to any one of claims 1 to 8, characterized in that: The tongue piece (221) and the first buckle (23) on the tongue piece (221) form a group, and there are at least two groups, which are respectively arranged on the box body side walls (22) on both sides of the circuit board (1).

10. The circuit board assembly according to claim 9, characterized in that: It also includes a cover body (3) which is arranged on the opening of the box body (2).

11. The circuit board assembly according to claim 10, characterized in that: A second buckle (24) is convexly provided on the outer side surface of the side wall (22) of the box body (2); The cover body (3) comprises a top cover (31), a connecting plate (32) extending downward from the edge of the top cover (31) and located outside the box body side wall (22), and the connecting plate (32) is provided with a clamping hole (320) penetrating the plate thickness for the second clamping buckle (24) to be clamped in.

12. The circuit board assembly according to claim 11, characterized in that: There are at least two second buckles (24), which are arranged on the box body side walls (22) on both sides of the circuit board (1) relative to each other. The number of the buckle holes (320) matches the number of the second buckles (24), and each buckle hole (320) is arranged corresponding to its own second buckle (24).

13. The circuit board assembly according to claim 12, wherein: The second buckles (24) and the first buckles (23) are arranged alternately in the circumferential direction.

14. The circuit board assembly according to claim 11, wherein: A reinforcing rib (321) extending inward is provided on the connection plate (32) near the clamping hole (320), and the inner end of the reinforcing rib (321) is opposite to the box body side wall (22), and the two are adjacent to or in contact with each other.

15. The circuit board assembly according to claim 10, wherein: The cover body (3) is provided with an indication hole (311) which passes through from top to bottom.

16. The circuit board assembly according to claim 10, wherein: The cover body (3) is provided with a glue overflow hole (312) which passes through from top to bottom, and the hole diameter of the glue overflow hole (312) is 1.2-1.8 mm.

17. A gas cooker, characterized in that A circuit board assembly as claimed in any one of claims 1 to 16.

18. The gas cooker according to claim 17, characterized in that Also included are: Panel (4); A burner (5) is arranged on the panel (4), wherein the burner (5) is provided with a probe (6) for detecting the temperature of the bottom of the pot; The circuit board assembly is arranged below the panel (4), and the input end of the circuit board (1) is electrically connected to the output end of the probe (6).

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