Power supply box and electric equipment

Abstract

The utility model provides a power supply box and electric equipment, the power supply box comprises a bottom box, an upper cover and a circuit board, the bottom box is provided with a containing position, the upper cover is installed on the bottom box and covers the containing position, the circuit board is installed in the containing position, the circuit board is provided with a heat source, the heat source comprises a heat dissipation part, and the power supply box further comprises an elastic clamping piece. The elastic clamping piece is provided with a supporting part, a connecting part and a clamping arm part, the connecting part is connected between the supporting part and the clamping arm part, a slot is formed among the supporting part, the connecting part and the clamping arm part, the first side wall of the bottom box is located in the slot, the supporting part is adjacent to the outer surface of the first side wall, the clamping arm part is located in the containing position, and a clamping position is formed between the clamping arm part and the inner surface of the first side wall. The heat dissipation part is located in the clamping position, and the clamping arm part abuts against the heat dissipation part. The electric equipment is provided with the power supply box, and the power supply box has the advantages of being convenient to assemble and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of power supplies, and specifically, to a power supply box and an electrical device provided with the power supply box. Background Art

[0002] The power adapter includes components such as a bottom box, an upper cover, and a circuit board. The circuit board is installed in the accommodation position of the bottom box, the upper cover is installed on the bottom box and covers the accommodation position. There are multiple heat sources on the circuit board, such as MOS transistors, diodes, bridge rectifiers, etc. For example, a heat source on the existing circuit board - the MOS transistor, as a voltage-controlled component, is used to achieve the conduction of different circuits. During the operation of the MOS transistor, its temperature is relatively high. Therefore, the existing conventional treatment method is: rivet nuts are provided on the side wall of the bottom box, and then the corresponding MOS transistor on the circuit board is fixed to the side wall of the bottom box through screws, pressure strips and rivet nuts, so that the MOS transistor can be closely attached to the side wall of the bottom box, so that the bottom box can dissipate heat from the MOS transistor reliably; however, the deficiency of the above treatment method is that the processing difficulty of the power supply box is large, the number of parts required during assembly is large, the production cost is high, and the assembly is troublesome and the efficiency is low. Summary of the Invention

[0003] The main purpose of the utility model is to provide a power supply box that is convenient for assembly and has a low production cost.

[0004] Another purpose of the utility model is to provide an electrical device provided with the above power adapter.

[0005] To achieve the main purpose of the utility model, the utility model provides a power supply box, which includes a bottom box, an upper cover and a circuit board. The bottom box has an accommodation position. The upper cover is installed on the bottom box and covers the accommodation position. The circuit board is installed in the accommodation position. The circuit board includes a heat dissipation part. Among them, the power supply box further includes an elastic clip. The elastic clip has a support part, a connecting part and a clamping arm part. The connecting part is connected between the support part and the clamping arm part. A slot is formed among the support part, the connecting part and the clamping arm part. The first side wall of the bottom box is located in the slot. The support part is adjacent to the outer surface of the first side wall. The clamping arm part is located in the accommodation position and forms a clamping position between the inner surface of the first side wall. The heat dissipation part is located in the clamping position. The clamping arm part abuts against the heat dissipation part.

[0006] As can be seen from the above, through the setting of the elastic clip and the structural design of the elastic clip, when assembling the power supply box, the MOS can be clamped and fixed on the bottom box only by the elastic clip, and the heat dissipation part can be closely attached to the bottom box to ensure the reliability of heat dissipation of the heat dissipation part, reduce the number of assembly parts, improve the assembly efficiency, and reduce the production difficulty and production cost.

[0007] A preferred solution is that the clamping arm portion has a first bending section and a second bending section. The first bending section extends from the connecting portion. The first included angle between the first bending section and the connecting portion is an acute angle. The second bending section extends from the extending end of the first bending section away from the supporting portion, or the first bending section is parallel to the supporting portion, and the second bending section extends from the extending end of the first bending section toward the supporting portion.

[0008] As can be seen from the above, this design enables the clamping arm portion to have a tendency to move toward the supporting portion under the action of the material properties of the elastic clip itself. When the heat dissipation portion is placed within the clamping position, the heat dissipation portion forces the clamping arm portion to move away from the supporting portion, thereby enabling the clamping arm portion to cooperate with the first side wall of the bottom case to clamp and fix the heat dissipation portion on the bottom case.

[0009] Another preferred solution is that the power supply box further includes an insulating sheet, which is laid in the accommodating position. The insulating sheet is provided with an avoidance notch at the heat dissipation portion, and the heat dissipation portion passes through the avoidance notch and is adjacent to the first side wall.

[0010] As can be seen from the above, the insulating sheet can prevent the circuit board from being electrically conducted with the bottom case and the upper cover, thereby avoiding electric leakage of the bottom case and the upper cover. The provision of the avoidance notch on the insulating sheet can ensure the heat exchange efficiency between the heat dissipation portion and the bottom case, enabling the heat dissipation portion to be reliably cooled.

[0011] Another preferred solution is that the first side wall is recessed inward to form an inner concave groove at the heat dissipation portion, and the supporting portion is located within the inner concave groove; or the upper cover has a second side wall that covers the first side wall, and the second side wall is convex outward to form an outer convex groove at the elastic clip portion away from the first side wall, and at least a part of the supporting portion is located within the outer convex groove.

[0012] As can be seen from the above, this design can form a space for accommodating the elastic clip on the bottom case or the upper cover, thereby optimizing the structure of the power supply box, facilitating the miniaturization design of the power supply box, and making the power supply box more compact.

[0013] A further solution is that the first side wall is provided with a first engaging portion, and the second side wall is provided with a second engaging portion, and the first engaging portion and the second engaging portion are engaged and connected.

[0014] As can be seen from the above, this design can simplify the structure of the bottom case, eliminating the need to drill holes or set rivet nuts on the bottom case, drill through holes on the upper cover, and set bolts to fix the bottom case and the upper cover. Thus, the disassembly and assembly between the bottom case and the upper cover are simpler and easier to operate, which is conducive to further improving the assembly efficiency of the power supply box and reducing the production cost of the power supply box.

[0015] A further step solution is that one of the first engaging portion and the second engaging portion is a slot and the other is a buckle; the buckle is inclined toward the top of the power supply box in the depth direction of the accommodating position and protrudes toward the slot, and the second included angle between the buckle and the depth direction is between 15° and 30°.

[0016] As can be seen from the above, through the structural design of the first engaging portion and the second engaging portion, it is easy to assemble the bottom box and the upper cover, and they are not easily separated from each other after assembly.

[0017] A further solution is that the top of the first side wall is recessed to form a recessed notch towards the bottom of the bottom box at the elastic clip, and the connecting portion is located within the recessed notch; and / or the top of the first side wall is bent towards the accommodating position to form a third bent section, the second side wall covers the third bent section, and the first engaging portion is formed on the third bent section.

[0018] As can be seen from the above, the above design is beneficial to further optimize the structure of the power supply box, further facilitate the miniaturization design of the power supply box, and make the power supply box more compact.

[0019] Another preferred solution is that the bottom box is provided with a first grounding portion, the upper cover extends towards the first grounding portion to form a second grounding portion, and the first grounding portion and the second grounding portion are cooperatively connected; the first grounding portion is provided at the bottom of the accommodating position, the first grounding portion is a rivet nut, the second grounding portion is a bent plate, and the bent plate is provided with a through hole matching the rivet nut; the upper cover is provided with a heat dissipation hole group, and the heat dissipation hole group communicates with the accommodating position.

[0020] As can be seen from the above, this design makes the grounding of the power supply box more convenient and optimizes the structure of the power supply box.

[0021] To achieve another object of the present invention, the present invention provides an electrical equipment, including an electrical appliance, and further including the above power supply box, and the electrical appliance is electrically connected to the circuit board.

[0022] As can be seen from the above, the electrical equipment provided with the above power supply box is convenient for production and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural diagram of an embodiment of the power supply box of the present invention.

[0024] Figure 2 is an exploded view of an embodiment of the power supply box of the present invention.

[0025] Figure 3 is a structural diagram of the bottom box of an embodiment of the power supply box of the present invention.

[0026] Figure 4 is a structural diagram of the upper cover of an embodiment of the power supply box of the present invention.

[0027] Figure 5 is a structural diagram of the first structure of the elastic clip of an embodiment of the power supply box of the present invention.

[0028] Figure 6It is a structural diagram of the second structure of the elastic clip of the power supply box embodiment of the present utility model.

[0029] Figure 7 It is a structural diagram of the power supply box embodiment of the present utility model after omitting some components.

[0030] Figure 8 It is a cross-sectional view of the power supply box embodiment of the present utility model.

[0031] The present utility model will be further described below with reference to the accompanying drawings and embodiments. Specific embodiments

[0032] Power supply box embodiment

[0033] Refer to Figure 1 and Figure 2 As shown, the power supply box 100 includes a bottom box 1, an upper cover 2, a circuit board 3, an elastic clip 4, and an insulating sheet 5. The bottom box 1 has a receiving position 11, the circuit board 3 is installed in the receiving position 11, the upper cover 2 is installed on the bottom box 1, and the upper cover 2 covers the receiving position 11 to play a certain role in dust prevention and protection for the circuit board 3. The circuit board 3 includes a heat source (such as MOS transistors, diodes, bridge rectifiers, etc., and MOS transistors are used as an example in this embodiment), and the heat source includes a heat dissipation part 31. When the circuit board 3 is installed in the receiving position 11, the heat dissipation part 31 is attached to the first side wall 12 of the bottom box 1 (i.e., the first side wall 12 of the receiving position 11) so that the heat dissipation part 31 can dissipate heat by means of the bottom box 1, thereby ensuring the stable and normal operation of the MOS transistor.

[0034] Combined with Figure 3 and Figure 4 As shown, the bottom box 1 is also provided with a first grounding part 13. Correspondingly, the upper cover 2 extends and forms a second grounding part 22 towards the first grounding part 13; when the bottom box 1 and the upper cover 2 are assembled, the first grounding part 13 and the second grounding part 22 are cooperatively connected to achieve the grounding treatment of the power supply box 100 and ensure the safety of the power supply box 100 during use. Preferably, as in this embodiment, the first grounding part 13 is provided at the bottom of the receiving position 11, and the first grounding part 13 is preferably a rivet nut; the second grounding part 22 is preferably a bent plate, and a through hole 221 is provided on the bent plate, and the through hole 221 is matched with the rivet nut; when the bottom box 1 and the upper cover 2 are assembled, the through hole 221 on the bent plate is aligned with the threaded hole on the rivet nut, and then a bolt passes through the threaded hole, a washer and is threadedly connected to the threaded hole and the ground wire to achieve the grounding treatment of the power supply box 100; through the design of the first grounding part 13 and the second grounding part 22, the grounding treatment of the power supply box 100 can be made more convenient and reliable, and the grounding structure of the power supply box 100 can be optimized.

[0035] The elastic clip 4 is used to cooperate with the bottom case 1 to clamp and fix the heat dissipation part 31 on the circuit board 3, so as to ensure that the heat dissipation part 31 can be reliably and stably attached to the first side wall 12 of the bottom case 1, thereby ensuring that the heat dissipation part 31 can dissipate heat in time and enabling the MOS transistor to work stably. Combined with Figure 5 , the elastic clip 4 has a support part 41, a connecting part 42 and a clamping arm part 43; wherein, the connecting part 42 is connected between one end of the support part 41 and one end of the clamping arm part 43, and a slot 401 is formed between the support part 41, the connecting part 42 and the clamping arm part 43, so that when the elastic clip 4 is assembled with the bottom case 1, the first side wall 12 of the bottom case 1 is inserted into the slot 401 of the elastic clip 4, and the support part 41 is adjacent to the outer surface of the first side wall 12, and the clamping arm part 43 is located in the accommodating position 11 and a clamping position 402 is formed between the clamping arm part 43 and the inner surface of the first side wall 12 (see Figure 8 ); when the elastic clip 4, the bottom case 1 and the circuit board 3 are assembled, the heat dissipation part 31 is located in the clamping position 402, and the clamping arm part 43 abuts against the heat dissipation part 31, so that the clamping arm part 43 cooperates with the first side wall 12 of the bottom case 1 to clamp and fix the heat dissipation part 31.

[0036] Preferably, the clamping arm part 43 has a first bending section 431 and a second bending section 432. The first bending section 431 extends from the connecting part 42, and the second bending section 432 extends from the extending end of the first bending section 431; wherein, the connecting part 42 is preferably substantially perpendicular to the support part 41. As an alternative solution, as Figure 5 shown, the first included angle a between the first bending section 431 and the connecting part 42 is an acute angle, and the second bending section 432 extends from the extending end of the first bending section 431 away from the support part 41, so that the third included angle between the first bending section 431 and the second bending section 432 is an obtuse angle. This design enables the clamping arm part 43 to have a tendency to move towards the support part 41 under the action of the material properties of the elastic clip 4 itself, so that when the heat dissipation part 31 is placed in the clamping position 402, the heat dissipation part 31 forces the clamping arm part 43 to move away from the support part 41, and further enables the clamping arm part 43 to cooperate with the first side wall 12 of the bottom case 1 to clamp and fix the heat dissipation part 31 on the bottom case 1.

[0037] As another alternative solution, as Figure 6 shown, the first bending section 431 is preferably substantially parallel to the support part 41, and the second bending section 432 extends from the extending end of the first bending section 431 towards the support part 41. Among them, the second bending section 432 can extend vertically with respect to the support part 41 or can extend obliquely with respect to the support part 41; when the second bending section 432 extends obliquely with respect to the support part 41, the clamping arm part 43 preferably further has a fourth bending section, and the fourth bending section extends from the extending end of the second bending section 432 away from (can be perpendicularly away from or obliquely away from) the support part 41.

[0038] In order to optimize the structure of the power supply box 100, combined withFigure 3 and Figure 7 In this embodiment, a concave groove 121 is formed in the first side wall 12 of the bottom case 1 at the heat dissipation part 31 and recessed into the accommodation position 11, so that when the elastic clip 4 is assembled with the bottom case 1, the support part 41 of the elastic clip 4 can be completely received in the concave groove 121, which is beneficial to the miniaturized design of the power supply box 100 and makes the power supply box 100 more compact. Of course, as another alternative solution, in other embodiments, the design of the concave groove 121 on the first side wall 12 can be cancelled, and instead, a convex groove is formed on the second side wall 21 of the upper cover 2. The convex groove is located at the elastic clip 4 and protrudes from the second side wall 21 away from the first side wall 12; wherein, the second side wall 21 covers the first side wall 12; when the power supply box 100 is assembled, at least a part of the support part 41 of the elastic clip 4 is located in the convex groove.

[0039] Furthermore, a sunken notch 123 is formed at the top of the first side wall 12 at the elastic clip 4 and recessed towards the bottom of the bottom case 1. When the elastic clip 4 is assembled with the bottom case 1, the connecting part 42 is located in the sunken notch 123. The design of the sunken notch 123 is beneficial to further optimize the structure of the power supply box 100 and make the power supply box 100 more compact.

[0040] Furthermore, a third bending section 124 can be formed by bending the top of the first side wall 12 towards the accommodation position 11; when the bottom case 1 and the upper cover 2 are assembled, the second side wall 21 covers the third bending section 124, and this design is also beneficial to optimizing the structure of the power supply box 100 and reducing the volume of the power supply box 100. Preferably, when the upper cover 2 is assembled to the bottom case 1, the outer surface of the second side wall 21 is flush with the outermost outer surface of the first side wall 12, or the outer surface of the second side wall 21 is located between the outermost outer surface of the first side wall 12 and the outer surface of the third bending section 124.

[0041] In addition, in order to simplify the structure of the bottom case 1, so that there is no need to drill holes or set rivet nuts on the bottom case 1, no need to drill through holes 221 on the upper cover 2, and no need to set bolts to fix the bottom case 1 and the upper cover 2, a first engaging part 122 is provided on the first side wall 12 of the bottom case 1, and the first engaging part 122 is preferably formed on the third bending section 124. Correspondingly, a second engaging part 211 is provided on the second side wall 21, so that when the bottom case 1 and the upper cover 2 are assembled, the two can be fixed to each other through the engagement connection between the first engaging part 122 and the second engaging part 211. Among them, one of the first engaging part 122 and the second engaging part 211 is a clamping groove and the other is a clamping buckle; for example, in this embodiment, the first engaging part 122 is a clamping groove and the second engaging part 211 is a clamping buckle. Preferably, as Figure 8As shown, the buckle inclines towards the top of the power supply box 100 in the depth direction of the accommodation position 11 and protrudes towards the card slot, and the second included angle b between the buckle and the depth direction is between 15° and 30°; through the structural design of the first engaging portion 122 and the second engaging portion 211, it is easy to assemble between the bottom box 1 and the upper cover 2 and they are not easily separated from each other after assembly. It can be seen that the setting of the first engaging portion 122 and the second engaging portion 211 makes the disassembly and assembly between the bottom box 1 and the upper cover 2 simpler and easier to operate, which is beneficial to further improving the assembly efficiency of the power supply box 100 and reducing the production cost of the power supply box 100.

[0042] Furthermore, as Figure 4 shown, a heat dissipation hole group 23 can be provided on the upper cover 2. The heat dissipation hole group 23 includes a plurality of heat dissipation holes, and the plurality of heat dissipation holes penetrate through the upper cover 2, so that the heat dissipation hole group 23 is communicated with the accommodation position 11, which is more conducive to the heat dissipation of each electronic component on the circuit board 3 and ensures the stability of the operation of the power supply box 100.

[0043] The insulating sheet 5 is laid in the accommodation position 11. The setting of the insulating sheet 5 can prevent the circuit board 3 from being electrically conducted with the bottom box 1 and the upper cover 2, thus avoiding leakage of electricity from the bottom box 1 and the upper cover 2. Preferably, the insulating sheet 5 is provided with an avoidance notch 51 at the heat dissipation portion 31, so that the heat dissipation portion 31 can pass through the avoidance notch 51 and be adjacent to the first side wall 12, thereby ensuring the heat exchange efficiency between the heat dissipation portion 31 and the bottom box 1 and enabling reliable heat dissipation of the MOS transistor.

[0044] In this embodiment, the bottom box 1 and / or the upper cover 2 can be made of aluminum. When the bottom box 1 and / or the upper cover 2 made of aluminum are formed, surface treatment is still required to protect the aluminum and make the bottom box 1 and / or the upper cover 2 beautiful.

[0045] In summary, through the design of the elastic clip 4 and the structural design of the elastic clip 4, when assembling the power supply box 100, the MOS transistor can be tightly clamped and fixed on the bottom box 1 only by the elastic clip 4 and the heat dissipation portion 31 can be closely attached to the bottom box 1 to ensure the reliability of heat dissipation of the heat dissipation portion 31. Therefore, it is not necessary to provide a plurality of rivet nuts on the bottom box 1, and it is not necessary to provide a plurality of bolts and a plurality of pressure strips to tightly press and fix the heat dissipation portion 31 on the bottom box 1, effectively reducing the number of assembly parts, improving the assembly efficiency, and reducing the production difficulty and production cost.

[0046] Embodiment of the electrical equipment

[0047] The electrical equipment includes an electrical appliance and the power supply box in the above power supply box embodiment. The electrical appliance is electrically connected to the circuit board to provide a stable power input for the electrical appliance; wherein, the electrical appliance can be a lamp, a household electrical appliance, etc.; and the electrical equipment provided with the above power supply box has the advantages of being easy to produce and having a low cost.

[0048] Finally, it should be emphasized that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Power supply box, comprising: Bottom box, the bottom box having a receiving position; Upper cover, the upper cover being mounted on the bottom box and covering the receiving position; Circuit board, the circuit board being mounted within the receiving position, the circuit board having a heat source, the heat source including a heat dissipation portion; It is characterized in that the power supply box further comprises: Elastic clip, the elastic clip having a support portion, a connecting portion and a clamping arm portion, the connecting portion being connected between the support portion and the clamping arm portion, a slot being formed between the support portion, the connecting portion and the clamping arm portion, a first side wall of the bottom box being located within the slot, the support portion being adjacent to an outer surface of the first side wall, the clamping arm portion being located within the receiving position and forming a clamping position between the clamping arm portion and an inner surface of the first side wall, the heat dissipation portion being located within the clamping position, and the clamping arm portion abutting against the heat dissipation portion.

2. The power supply box according to claim 1, characterized in that: The clamping arm portion has a first bending section and a second bending section, the first bending section extending from the connecting portion; A first angle between the first bending section and the connecting portion is an acute angle, the second bending section extending from an extending end of the first bending section away from the support portion, or The first bending section is parallel to the support portion, and the second bending section extends from an extending end of the first bending section towards the support portion.

3. The power supply box according to claim 1, characterized in that: The power supply box further comprises an insulating sheet, the insulating sheet being laid within the receiving position; The insulating sheet is provided with an avoidance notch at the heat dissipation portion, and the heat dissipation portion passes through the avoidance notch and is adjacent to the first side wall.

4. The power supply box according to claim 1, characterized in that: The first side wall is recessed towards the receiving position at the heat dissipation portion to form an inner concave groove, and the support portion is located within the inner concave groove; or The upper cover has a second side wall, the second side wall covering the first side wall, and the second side wall is convexly formed with an outer convex groove towards the first side wall at the elastic clip, and at least a part of the support portion is located within the outer convex groove.

5. The power supply box according to claim 4, characterized in that: A first engaging portion is provided on the first side wall, a second engaging portion is provided on the second side wall, and the first engaging portion and the second engaging portion are engaged and connected.

6. The power supply box according to claim 5, characterized in that: One of the first engaging portion and the second engaging portion is a card slot and the other is a buckle; The buckle is inclined towards the top of the power supply box in the depth direction of the receiving position and protrudes towards the card slot, and a second angle between the buckle and the depth direction is between 15° and 30°.

7. The power supply box according to claim 5, characterized in that: The top of the first side wall is recessed towards the bottom of the bottom box at the elastic clip to form a recessed notch, and the connecting portion is located within the recessed notch; and / or The top of the first side wall is bent towards the receiving position to form a third bending section, the second side wall covering the third bending section, and the first engaging portion is formed on the third bending section.

8. The power supply box according to claim 1, characterized in that: A first grounding portion is provided on the bottom box, and a second grounding portion is formed by extending the upper cover toward the first grounding portion, and the first grounding portion is cooperatively connected with the second grounding portion; The first grounding portion is provided at the bottom of the accommodating position, the first grounding portion is a rivet nut, the second grounding portion is a bent plate, and a through hole matching the rivet nut is provided on the bent plate; The upper cover is provided with a heat dissipation hole group, and the heat dissipation hole group communicates with the accommodating position.

9. An electrical device, including an electrical appliance, characterized in that, It further includes the power supply box according to any one of claims 1 to 8, and the electrical appliance is electrically connected to the circuit board.

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