Circuit board mounting box and cooking utensil

Abstract

The utility model provides a circuit board mounting box and a cooking utensil. The circuit board mounting box comprises a box body and an elastic buckle arm. The box body comprises a bottom plate and a side plate which define a mounting cavity, the side plate is provided with a clamping hole, and the box body is provided with an opening for the circuit board to enter and exit from the mounting cavity. The elastic buckle arm is connected to the box body and has a clamping state and a free state. When the elastic buckle arms are in the clamping state, the elastic buckle arms are matched with the clamping holes in a clamping mode, and the circuit board can be clamped between the elastic buckle arms and the bottom plate. When the elastic buckle arms are in a free state, the elastic buckle arms are separated from the clamping holes, and the circuit board can enter and exit from the mounting cavity through the opening. The elastic buckle arms in the free state do not interfere with the circuit board, and the circuit board can enter and exit from the box body easily, so that the circuit board is convenient to maintain and replace. The elastic buckling arms in the clamping state can be buckled into the box body to limit the circuit board, so that the circuit board is ensured to be accurate and stable in position, and damage caused by movement or vibration is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and more particularly to a circuit board mounting box and a cooking appliance. Background Art

[0002] The circuit board is fixedly connected in the mounting box to prevent the circuit board from moving or vibrating during use, thereby affecting the stability and reliability of the circuit. In the prior art, a buckle structure is provided at the inner edge of the mounting box. When the circuit board is assembled into the mounting box, it is necessary to manually press the circuit board with force to complete the snap connection and fixation.

[0003] Since the components on the circuit board are sensitive and vulnerable parts, there is a risk of damaging the components on the circuit board during the assembly process of the circuit board.

[0004] Therefore, it is necessary to provide a circuit board mounting box and a cooking appliance to at least partially solve the above problems. Summary of the Utility Model

[0005] A series of simplified concepts are introduced in the summary of the utility model, which will be further described in detail in the detailed implementation section. The summary of the utility model does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0006] To at least partially solve the above problems, a first aspect of the utility model provides a circuit board mounting box, comprising:

[0007] A box body, the box body includes a bottom plate and side plates that enclose to form a mounting cavity, the side plates are provided with snap holes, and the box body is provided with an opening for the circuit board to enter and exit the mounting cavity; and

[0008] A snap arm, the snap arm is connected to the box body, and the snap arm has a snap state and a free state; wherein,

[0009] When the snap arm is in the snap state, the snap arm is snap-fitted with the snap hole, and the circuit board can be clamped between the snap arm and the bottom plate;

[0010] When the snap arm is in the free state, the snap arm is separated from the snap hole, and the circuit board can enter and exit the mounting cavity through the opening.

[0011] According to this solution, during assembly, first place the circuit board into the installation box in a free state, and then snap the buckle wall into the clamping hole to form a clamped state. During this assembly process, there is no need to press the circuit board, avoiding damage to the components on the circuit board. The buckle arm in the free state does not interfere with the circuit board, and the circuit board can easily enter and exit the box body, facilitating the maintenance and replacement of the circuit board. The buckle arm in the clamped state can be snapped into the box body to limit the circuit board, ensuring the accurate and stable position of the circuit board and preventing damage caused by movement or vibration. The circuit board installation box provided by this solution can achieve the fixed assembly of the circuit board without using other fasteners, with high assembly efficiency and avoiding deformation of the circuit board during the assembly process.

[0012] Optionally, the buckle arm includes a connecting rod and a buckle head connected to the end of the connecting rod. The connecting rod is bendable so that the buckle head can be clamped and matched with the clamping hole.

[0013] According to this solution, the connecting rod is bendable, so the switching between the clamped state and the free state of the buckle arm can be achieved; the buckle head can be stably clamped with the clamping hole, improving the fixing effect of the circuit board and avoiding accidental detachment.

[0014] Optionally, the buckle head includes a first guiding surface and a limiting surface facing away from each other in the thickness direction of the side plate; wherein,

[0015] The first guiding surface is inclined in the direction away from the limiting surface, and the width of the buckle head gradually decreases in the direction away from the connecting rod; and / or

[0016] The first guiding surface is provided as one or more.

[0017] According to this solution, the inclined setting of the first guiding surface helps to guide the buckle head to smoothly enter the clamping hole, improving the installation efficiency.

[0018] Optionally, the buckle arm includes a connecting rod, and the connecting rod includes:

[0019] A connecting portion, the first end of which is connected to the box body;

[0020] A corner portion, the first end of which is connected to the second end of the connecting portion; and

[0021] An extension portion, the first end of which is connected to the second end of the corner portion, and the second end of the extension portion extends towards the clamping hole;

[0022] Wherein, the thickness of the connecting portion gradually increases in the direction away from the corner portion, and the thickness of the extension portion gradually increases in the direction away from the corner portion; and / or

[0023] The widths of the connecting part, the corner part and the extending part are the same.

[0024] According to this solution, the corner is convenient for bending the elastic buckle arm, and the extending part can withstand a large external force.

[0025] Optionally, the side plate includes a side plate body and a retaining rib. At least part of the retaining rib serves as the groove wall of the clamping hole, and the side of the retaining rib away from the clamping hole is connected to the side plate body, and the remaining sides are hollowed out between the side plate body and / or the bottom plate.

[0026] According to this solution, the retaining rib has a certain deformation ability, which is convenient for the clamping process of the elastic buckle arm.

[0027] Optionally, the retaining rib includes a first retaining rib and a second retaining rib. The first retaining rib, the second retaining rib and the bottom plate enclose the clamping hole, and the first retaining rib and the second retaining rib are spaced apart.

[0028] Optionally, the retaining rib is provided with a second guiding surface, the second guiding surface is inclined in a direction away from the clamping hole, and the thickness of the retaining rib gradually decreases in a direction close to the clamping hole.

[0029] According to this solution, the second guiding surface cooperates with the first guiding surface to form a guide for installing the buckle head.

[0030] The thickness of the retaining rib is less than the thickness of the side plate body.

[0031] According to this solution, the retaining rib has greater elasticity.

[0032] Optionally, the elastic buckle arm includes a buckle head, wherein,

[0033] In a plane perpendicular to the thickness direction of the side plate, at least part of the projection of the buckle head covers the projection of the clamping hole; and

[0034] In a plane perpendicular to the thickness direction of the side plate, the projection of the clamping hole covers at least part of the projection of the buckle head.

[0035] According to this solution, it is convenient for the buckle head to enter the clamping hole, and the buckle head can be stably clamped into the clamping hole after entering the clamping hole.

[0036] Optionally, the box body and the elastic buckle arm are integrally formed by injection molding.

[0037] According to this solution, the integral molding makes the connection between the two more firm, the overall structure of the circuit board mounting box is more stable and reliable, and the manufacturing process is simplified and the production efficiency is improved.

[0038] The second aspect of the present utility model provides a cooking appliance, including a circuit board and the above-mentioned circuit board mounting box.

[0039] According to this solution, through the cooperation of the snap arm and the clamping hole in the circuit board mounting box, not only the risk of component damage caused by directly pressing the circuit board during the assembly process is avoided, but also the circuit board can be accurately and stably installed in the mounting box. It provides great convenience for the maintenance and replacement of the circuit board, and improves the overall reliability of the cooking appliance and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following drawings of the embodiments of the present utility model are used as a part of the present utility model to understand the present utility model. The embodiments and descriptions of the present utility model are shown in the drawings to explain the principles of the present utility model. In the drawings,

[0041] Figure 1 is a top view schematic diagram of the circuit board mounting box of a preferred embodiment of the present utility model;

[0042] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0043] Figure 3 is a top view schematic diagram of the circuit board mounting box of a preferred embodiment of the present utility model, in which one snap arm is in a clamped state and one snap arm is in a free state;

[0044] Figure 4 is a cross-sectional schematic diagram taken along the Figure 1 center line B-B;

[0045] Figure 5 is a front view schematic diagram of the circuit board mounting box of a preferred embodiment of the present utility model;

[0046] Figure 6 is a cross-sectional schematic diagram taken along the Figure 5 center line C-C;

[0047] Figure 7 is Figure 6 an enlarged schematic diagram of part D in

[0048] Figure 8 is a three-dimensional schematic diagram of the circuit board mounting box of a preferred embodiment of the present utility model;

[0049] Figure 9 is a three-dimensional schematic diagram of the circuit board mounting box and the circuit board of a preferred embodiment of the present utility model.

[0050] Description of the Reference Numerals

[0051] 10: Circuit board mounting box

[0052] 20: Circuit board

[0053] 100: Box body

[0054] 101: Mounting cavity

[0055] 102: Opening

[0056] 110: Bottom plate

[0057] 120: Side plate

[0058] 1201: Clamping hole

[0059] 121: Side plate body

[0060] 122: Baffle rib

[0061] 1221: First baffle rib

[0062] 1222: Second baffle rib

[0063] 1223: Second guiding surface

[0064] 1224: Reserved part

[0065] 200: Elastic buckle arm

[0066] 210: Connecting rod

[0067] 211: Connecting part

[0068] 212: Corner part

[0069] 213: Extension part

[0070] 220: Buckle head

[0071] 221: First guiding surface

[0072] 222: Limiting surface

[0073] DW: Thickness direction Detailed implementation manner

[0074] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the embodiments of the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present utility model, some well-known technical features in the art are not described.

[0075] In this text, ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0076] In this text, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than defining the absolute positions of these relevant parts.

[0077] In this text, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0078] Unless otherwise specified, the numerical ranges in this text include not only the entire range within its two endpoints, but also several sub-ranges included therein.

[0079] Now, exemplary embodiments according to the present utility model will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present utility model is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art.

[0080] Figures 1 to 9 There is shown a circuit board mounting box 10, including a box body 100 and a snap arm 200. Optionally, the snap arm 200 is connected to the outside of the box body 100. The snap arm 200 can be snapped into the box body 100 (i.e., in the clamped state) to limit the circuit board 20, ensuring the accurate and stable position of the circuit board 20 and preventing damage caused by movement or vibration. When the snap arm 200 is not snapped into the box body 100 (i.e., in the free state), the snap arm 200 does not interfere with the circuit board 20, and the circuit board can easily enter and exit the box body 100, facilitating the maintenance and replacement of the circuit board 20.

[0081] The box body 100 includes a bottom plate 110 and side plates 120 that enclose to form an installation cavity 101. The box body 100 is used to provide an installation space for the circuit board 20. The circuit board 20 is installed onto the box body 100 through the limitation of the snap arm 200. The setting of the snap arm 200 facilitates the limitation and fixation of the circuit board 20, and facilitates the installation of the circuit board 20 through one operation, thus simplifying the assembly of the circuit board 20.

[0082] Optionally, in other embodiments, the circuit board 20 can also be fixedly integrated with the box body 100 by using methods such as bolt connection and bonding, making the connection between the circuit board 20 and the box body 100 more firm.

[0083] The bottom plate 110 of the box body 100 is usually located at the bottom and is used to support and fix internal components. Optionally, the bottom plate 110 is provided with pre-designed mounting positions for fixing the circuit board 20 or other devices. The side plates 120 are connected to the outer peripheral edge of the bottom plate 110. The side plates 120 form the side surfaces of the box body 100 around the bottom plate 110, and the side plates 120 provide additional protection and support for the circuit board 20. Optionally, the side plates 120 and the bottom plate 110 are integrally formed to ensure the structural stability of the box body 100.

[0084] Optionally, the box body 100 is provided with an opening 102 for the circuit board 20 to enter and exit the installation cavity 101. Optionally, the shape of the opening 102 matches that of the circuit board 20, so that the circuit board 20 can be more conveniently loaded into or taken out of the installation cavity 101, improving the installation efficiency. Optionally, the shape of the bottom of the box body 100 matches that of the circuit board 20, so that the circuit board 20 can be stably installed.

[0085] Optionally, the side plate 120 is provided with a clamping hole 1201. The elastic buckle arm 200 can be clamped and passed through the clamping hole 1201 to extend into the interior of the accommodation cavity. Specifically, when the elastic buckle arm 200 is clamped into the clamping hole 1201, it is in the clamped state. The elastic buckle arm 200 is spaced from the bottom plate 110, and at least part of the elastic buckle arm 200 is located on the moving path of the circuit board 20, and the circuit board 20 can be clamped between the elastic buckle arm 200 and the bottom plate 110. When the elastic buckle arm 200 is separated from the clamping hole 1201, it is in the free state. The elastic buckle arm 200 leaves the accommodation cavity, and the circuit board 20 can enter and exit the installation cavity 101 through the opening 102.

[0086] As Figure 2 shown, the elastic buckle arm 200 includes a connecting rod 210 and a buckle head 220 connected to the end of the connecting rod 210. The connecting rod 210 can be bent so that the buckle head 220 can be clamped and cooperate with the clamping hole 1201. The connecting rod 210 can be bent, so that the switching between the clamped state and the free state of the elastic buckle arm 200 can be realized, making the installation and maintenance of the circuit board 20 more convenient and flexible. The buckle head 220 can be stably clamped with the clamping hole 1201, improving the fixing effect of the circuit board 20 and avoiding accidental detachment.

[0087] Optionally, when the buckle head 220 is clamped into the clamping hole 1201, the buckle head 220 abuts against the groove wall of the clamping hole 1201 and / or the cavity wall of the accommodation cavity. Through the multi-faceted contact setting of the buckle head 220, the buckle head 220 is stably clamped with the clamping hole 1201.

[0088] Optionally, the buckle head 220 includes a first guiding surface 221 and a limiting surface 222 that face away from each other in the thickness direction DW of the side plate 120. The thickness direction DW in the present utility model refers to the thickness direction DW of the side plate 120 where the clamping hole 1201 is located. Among them, the first guiding surface 221 is inclined in the direction away from the limiting surface 222, and the width of the buckle head 220 gradually decreases in the direction away from the connecting rod 210. Specifically, the buckle head 220 is configured as a wedge shape. The buckle head 220 gradually thickens from the free end towards the connecting rod 210. The wedge-shaped buckle head 220 can be more tightly clamped into the clamping hole 1201, improving the clamping stability and fixing strength, and reducing the risk of detachment. The inclined setting of the first guiding surface 221 helps to guide the buckle head 220 to smoothly enter the clamping hole 1201, improving the installation efficiency.

[0089] Optionally, the first guiding surface 221 is provided as one or more. Correspondingly, the limiting surface 222 is provided as one or more. Referring to Figure 2 , both the first guiding surface 221 and the limiting surface 222 are provided as one. Referring to Figure 7 , both the first guiding surface 221 and the limiting surface 222 are provided as two.

[0090] In this embodiment, when the elastic buckle arm 200 is in the free state, the first guiding surface 221 faces the clamping hole 1201, and the limiting surface 222 faces away from the clamping hole 1201; when the elastic buckle arm 200 is in the clamped state, the limiting surface 222 faces the clamping hole 1201, and the first guiding surface 221 faces away from the clamping hole 1201.

[0091] Optionally, in the plane perpendicular to the thickness direction DW of the side plate 120, the projection of at least part of the buckle head 220 covers the projection of the clamping hole 1201. That is, the size of the widest part of the buckle head 220 is greater than the size of the clamping hole 1201. Thus, when the elastic buckle arm 200 is in the clamped state, the buckle head 220 can be stably clamped to the clamping hole 1201, and the clamping hole 1201 can limit the active detachment of the buckle head 220. In the plane perpendicular to the thickness direction DW of the side plate 120, the projection of the clamping hole 1201 covers at least part of the projection of the buckle head 220. That is, the size of the narrowest part of the buckle head 220 is less than the size of the clamping hole 1201. Thus, when the elastic buckle arm 200 enters the clamping hole 1201, it assists in limiting the buckle head 220, and at the same time ensures that the elastic buckle arm 200 can smoothly enter the clamping hole 1201.

[0092] Referring to Figure 5 , the height b of the clamping hole 1201 is 7 mm, the width c of the clamping hole 1201 is 6 mm. The thickness d of the elastic buckle arm 200 is 5 mm, and the length h of the elastic buckle arm 200 is 26.5 mm. The size e of the buckle head 220 is 6 mm, and g is 3.5 mm.

[0093] The connecting rod 210 of the snap arm 200 includes a connecting portion 211, a corner portion 212, and an extending portion 213. The connecting portion 211, the corner portion 212, and the extending portion 213 are connected in sequence. The first end of the connecting portion 211 is connected to the box body 100. The first end of the corner portion 212 is connected to the second end of the connecting portion 211. The first end of the extending portion 213 is connected to the second end of the corner portion 212, and the second end of the extending portion 213 extends toward the engaging hole 1201. The snap head 220 is connected to the second end of the extending portion 213. The extending portion 213 is spaced apart from the box body 100. Under the action of an external force, the extending portion 213 can approach the box body 100 so that the snap head 220 engages with the engaging hole 1201.

[0094] The thickness of the connecting portion 211 gradually increases in the direction away from the corner portion 212, and the thickness of the extending portion 213 gradually increases in the direction away from the corner portion 212. That is, the thickness at the corner is the thinnest to facilitate the bending of the snap arm 200. Optionally, the thickness i of the thinnest part at the corner is 1 mm. The thickness of the first end of the connecting portion 211 is 1.5 mm. The thickness of the second end of the extending portion 213 is 2.5 mm. The overall thickness of the extending portion 213 is relatively wide. As the main force-applying part, the relatively wide and thick extending portion 213 can withstand a large external force, reduce the risk of deformation or damage, and improve the service life. Optionally, the widths of the connecting portion 211, the corner portion 212, and the extending portion 213 are in sequence, which is convenient for manufacturing and aesthetics. Optionally, the width of the snap arm 200 is 4 - 6 mm. Optionally, the width of the snap arm 200 is 5 mm.

[0095] Optionally, the side plate 120 includes a side plate body 121 and a rib 122. The rib 122 is connected to the side plate body 121. Among them, at least part of the rib 122 serves as the groove wall of the engaging hole 1201. Optionally, the rib 122 is configured as a sheet-like member. One side of the rib 122 away from the engaging hole 1201 is connected to the side plate body 121, and the remaining sides are hollowed out between the side plate body 121 and / or the bottom plate 110. The rib 122 has a certain deformation ability. When the snap arm 200 is inserted into or withdrawn from the engaging hole 1201, the rib 122 can generate corresponding deformations and then quickly return to the original position to ensure the stability and reliability of the engagement.

[0096] Optionally, the strength and elastic force of the rib 122 can be adjusted by adjusting the parameters of the rib 122. Among them, the adjustable parameters of the rib 122 include but are not limited to materials, shapes, thicknesses, and sizes.

[0097] Optionally, as Figure 2As shown, when both the first guiding surface 221 and the limiting surface 222 are set to one, that is, a single-sided snap head 220 is set. The limiting surface 222 of the snap head 220 needs to be set with a relatively wide width to ensure the stable clamping of the snap head 220. That is, the interference amount of the snap head 220 is relatively large, so the thickness of the second retaining rib 1222 can be reduced. As Figure 7 shown, when both the first guiding surface 221 and the limiting surface 222 are set to two, that is, a double-sided snap head 220 is set. The limiting surface 222 of the snap head 220 can be set with a relatively narrow width, which can ensure the stable clamping of the snap head 220. That is, the interference amount of the snap head 220 is relatively small, so the thickness of the second retaining rib 1222 can be increased, or the size of the second retaining rib 1222 can be reduced.

[0098] The retaining rib 122 includes a first retaining rib 1221 and a second retaining rib 1222. The first retaining rib 1221, the second retaining rib 1222 and the bottom plate 110 enclose a clamping hole 1201, and the first retaining rib 1221 and the second retaining rib 1222 are spaced apart. Specifically, in a plane perpendicular to the thickness direction DW of the side plate 120, the projection of the first retaining rib 1221 and the projection of the second retaining rib 1222 are arranged in a staggered manner.

[0099] The first retaining rib 1221 and the second retaining rib 1222 respectively form different wall surfaces of the clamping hole 1201. In one example, the first retaining rib 1221 forms the upper wall surface and the side wall surface of the clamping hole 1201, the second retaining rib 1222 forms the other side wall surface of the clamping hole 1201, and the bottom plate 110 forms the lower wall surface of the clamping hole 1201. Optionally, the part of the first retaining rib 1221 located on the upper wall surface forming the clamping hole 1201 is adapted to the size of the clamping hole 1201, and this part is spaced apart from the second retaining rib 1222. Optionally, the part of the first retaining rib 1221 located on the side wall surface forming the clamping hole 1201 is adapted to the size of the clamping hole 1201, and this part is spaced apart from the second retaining rib 1222, so that the first retaining rib 1221 and the second retaining rib 1222 form two side walls of the clamping hole 1201. Similarly, the part of the second retaining rib 1222 located on the side wall surface forming the clamping hole 1201 is adapted to the size of the clamping hole 1201. Thus, a blank part 1224 as shown in the figure is formed between the first retaining rib 1221 and the second retaining rib 1222 (or the side plate body 121). The setting of the blank part 1224 can ensure that the retaining rib 122 has a certain elastic force while saving materials.

[0100] Referring to Figure 5 , the height a of the part of the first retaining rib 1221 forming the upper wall of the clamping hole 1201 is 5 mm. As Figure 6 shown, the thickness f of the first retaining rib 1221 is 2.5 mm.

[0101] Optionally, the retaining rib 122 is provided with a second guiding surface 1223, which is inclined in a direction away from the clamping hole 1201, and the thickness of the retaining rib 122 gradually decreases in a direction close to the clamping hole 1201. The second guiding surface 1223 cooperates with the first guiding surface 221 to form a guide for the installation of the snap head 220.

[0102] In the present utility model, the box body 100 and the elastic buckle arm 200 are integrally formed by injection molding. The integral molding makes the connection between the two more firm, the overall structure of the circuit board mounting box 10 more stable and reliable, simplifies the manufacturing process, and improves the production efficiency.

[0103] The present utility model further provides a cooking appliance, including a circuit board 20 and the above-mentioned circuit board mounting box 10. Through the cooperation of the snap head 220 and the clamping hole 1201, the circuit board 20 is fixed in the mounting box. By utilizing the effect of the retaining rib 122 behind the buckle hole, the snap head 220 is kept from being disengaged after being snapped into the hole, effectively fixing the circuit board 20 to the mounting box, avoiding the stress during the installation of the mounting board, and also avoiding the use of fixing parts, thus improving the assembly efficiency.

[0104] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of the present utility model. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. Terms such as "provided" as used herein may mean that a component is directly attached to another component or that a component is attached to another component through an intermediate member. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0105] The present utility model has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present utility model within the scope of the described embodiments. Those skilled in the art can understand that according to the teachings of the present utility model, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present utility model.

Claims

1. A circuit board installation box, characterized in that: include: A box body, the box body comprising a bottom plate and a side plate which enclose a mounting cavity, the side plate being provided with a clamping hole, and the box body being provided with an opening for a circuit board to enter and exit the mounting cavity; and A snap arm, the snap arm is connected to the box body, and the snap arm has a snap-on state and a free state; wherein, The spring arm is in the clamping state, the spring arm is clamped and matched with the clamping hole, and the circuit board can be clamped between the spring arm and the bottom plate; The snap arm is in the free state, the snap arm is separated from the clamping hole, and the circuit board can enter and exit the installation cavity through the opening.

2. The circuit board mounting box according to claim 1, characterized in that: The snap arm comprises a connecting rod and a snap head connected to the end of the connecting rod, and the connecting rod can be bent so that the snap head can be snap-fitted with the snap hole.

3. The circuit board mounting box according to claim 2, characterized in that: The buckle head includes a first guide surface and a limit surface which are opposite to each other along the thickness direction of the side plate; wherein, The first guide surface is inclined in a direction away from the limiting surface, and the width of the buckle head gradually decreases in a direction away from the connecting rod; and / or The number of the first guide surfaces is one or more.

4. The circuit board mounting box according to claim 1 or 2, characterized in that: The snap arm includes a connecting rod, and the connecting rod includes: A connecting portion, a first end of which is connected to the box body; a corner portion, a first end of the corner portion being connected to a second end of the connecting portion; and an extension portion, a first end portion of the extension portion being connected to a second end portion of the corner portion, and a second end portion of the extension portion extending toward the engaging hole; Wherein, the thickness of the connecting portion gradually increases in a direction away from the corner portion, and the thickness of the extending portion gradually increases in a direction away from the corner portion; and / or The connecting portion, the corner portion and the extending portion have the same width.

5. The circuit board mounting box according to claim 1, characterized in that: The side panel includes a side panel body and retaining ribs, at least part of the retaining ribs serve as groove walls of the clamping holes, and one side of the retaining ribs away from the clamping holes is connected to the side panel body, while the other sides are hollowed out from the side panel body and / or the bottom plate.

6. The circuit board mounting box according to claim 5, characterized in that: The retaining ribs include a first retaining rib and a second retaining rib, the first retaining rib, the second retaining rib and the bottom plate are combined to form the clamping hole, and the first retaining rib and the second retaining rib are spaced apart.

7. The circuit board mounting box according to claim 5 or 6, characterized in that: The retaining rib is provided with a second guide surface, the second guide surface is inclined in a direction away from the clamping hole, and the thickness of the retaining rib gradually decreases in a direction approaching the clamping hole; and / or The thickness of the retaining rib is smaller than the thickness of the side plate body.

8. The circuit board mounting box according to any one of claims 1 to 3 and 5 to 6, characterized in that: The snap arm includes a snap head, wherein: In a plane perpendicular to the thickness direction of the side plate, at least a portion of the projection of the buckle head covers the projection of the snap hole; and In a plane perpendicular to the thickness direction of the side plate, the projection of the snap-fit ​​hole covers at least a portion of the projection of the buckle head.

9. The circuit board mounting box according to claim 1, characterized in that: The box body and the snap arm are integrally formed by injection molding.

10. A cooking utensil, characterized in that: The invention comprises a circuit board and a circuit board mounting box according to any one of claims 1 to 9.

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