Switching power supply

Abstract

The utility model discloses a switching power supply which comprises a shell, a circuit board and a wire rod. A containing cavity is formed in the shell, the circuit board is contained in the containing cavity and fixedly connected with the shell, and a plurality of first through holes for wire cores of wires to penetrate through are formed in the circuit board. A bonding pad is arranged on one side of the circuit board, a wire core at one end of the wire rod penetrates through the first through hole and is welded to the bonding pad, the wire rod and the circuit board are welded and fixed through the bonding pad arranged on one side of the circuit board, an original locking fixing mode is replaced, and therefore the assembling efficiency of the switching power supply and electric equipment is improved. And meanwhile, metal parts are prevented from falling into the switching power supply in the assembling process of the switching power supply and the electric equipment.

Description

Technical Field

[0001] The utility model generally relates to the technical field of electric energy conversion equipment, and in particular to a switching power supply. Background Art

[0002] A switching power supply is a high-frequency electrical energy conversion device and a type of power supply. It converts voltage or voltage into the voltage or current required by the user. The input of a switching power supply is usually AC power, and the output is DC power. A power cord is connected from the output to the device, converting AC power into DC power.

[0003] However, the output terminals of existing switching power supplies are screw terminals, which require a lot of time to lock during installation. Moreover, if the screw terminals are not locked properly during installation and fall into the power supply, they will cause short circuit damage to components. Utility Model Content

[0004] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0005] A main purpose of the present invention is to overcome at least one of the above-mentioned defects of the prior art and provide a switching power supply.

[0006] According to one aspect of the present invention, a switching power supply is provided, comprising a housing, a circuit board and a wire. A housing is formed inside the housing, the circuit board is accommodated in the housing and fixedly connected to the housing, a plurality of first through holes are provided on the circuit board for the cores of the wires to pass through, a soldering pad is provided on one side of the circuit board close to the bottom of the housing, and the soldering pad is arranged on the circumferential side of the first through hole, the core of one end of the wire passes through the first through hole and is soldered to the soldering pad.

[0007] According to one embodiment of the present invention, a plug-in terminal is provided at one end of the wire away from the soldering pad, and the plug-in terminal is used to engage and connect with an electrical device to provide power.

[0008] According to one embodiment of the present invention, one or more positioning holes are provided on both the left and right sides of the circuit board, and the bottom wall of the housing is provided with a boss protruding toward the circuit board, and the boss is locked and fixed to the positioning hole.

[0009] According to one embodiment of the present invention, a baffle is provided on a side of the housing close to the wire, the baffle is located on the front side of the housing, and a storage hole for the wire to pass through is provided on the baffle.

[0010] According to one embodiment of the present invention, the receiving hole is covered with a rubber ring to seal the output end of the switching power supply.

[0011] According to one embodiment of the present invention, a plurality of second through holes are provided on the baffle.

[0012] According to one embodiment of the present utility model, the shell includes an upper cover and a lower cover, and the upper cover and the lower cover are snap-connected. A card plate is provided on the left and right sides of the upper cover, and a card block is provided on the left and right sides of the lower cover. During assembly, the upper cover is pushed along the direction of the card block until the card plate is snap-connected to the card block.

[0013] According to one embodiment of the present invention, support plates are provided on the left and right sides of the upper cover close to the wire rod, and the support plates are against the lower cover.

[0014] According to one embodiment of the present invention, a plurality of heat dissipation holes are provided around the outer shell.

[0015] According to one embodiment of the present invention, the housing is made of metal.

[0016] It can be seen from the above technical solution that the advantages and positive effects of the utility model are:

[0017] The switching power supply provided by the present invention uses a soldering pad provided on one side of the circuit board to weld the wires to the circuit board, replacing the original locking fixation method, thereby improving the assembly efficiency of the switching power supply and the electrical equipment, and preventing metal parts from falling into the switching power supply during the assembly process of the switching power supply and the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The various objects, features, and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely illustrative illustrations of the present invention and are not necessarily drawn to scale. In the drawings, the same reference numerals represent the same or similar parts throughout.

[0019] Figure 1 It is a schematic diagram showing the overall structure of a switching power supply according to an exemplary embodiment.

[0020] Figure 2 FIG1 is a schematic diagram showing the decomposed structure of a switching power supply according to an exemplary embodiment.

[0021] Figure 3The figure is a schematic structural diagram of a lower cover of a switching power supply according to an exemplary embodiment.

[0022] Figure 4 The figure is a schematic structural diagram of a switching power supply circuit board according to an exemplary embodiment.

[0023] icon:

[0024] 100-housing; 110-upper cover; 111-card plate; 112-baffle; 113-storage hole; 114-support plate; 115-rubber ring; 116-second through hole; 120-lower cover; 121-card block; 122-boss; 130-heat dissipation hole; 200-circuit board; 201-first through hole; 202-positioning hole; 203-soldering pad; 300-wire; 400-connector terminal. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0026] The described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc. may be employed. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0027] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0028] like Figures 1 to 4 As shown, this embodiment provides a switching power supply, including a housing 100, a circuit board 200 and a wire 300. The circuit board 200 is installed inside the housing 100, and the wire 300 passes through the housing 100 to connect the circuit board 200 and the electrical equipment.

[0029] The housing 100 has an internal cavity, and the circuit board 200 is housed within the cavity and fixedly connected to the housing 100. The circuit board 200 is provided with a plurality of first through-holes 201 for the cores of the wires 300 to pass through. Solder pads 203 are provided on the side of the circuit board 200 near the bottom of the housing 100, and are arranged around the first through-holes 201. The solder pads 203 are preferably made of tin. During soldering, the core of one end of the wire 300 is passed through the first through-holes 201 and then soldered to the solder pads 203. This further improves the connection strength between the wire 300 and the circuit board 200. Using soldering to secure the wire 300 and the circuit board 200 can improve the assembly efficiency of the switching power supply.

[0030] Among them, a plug-in terminal 400 is provided at one end of the wire 300 away from the solder pad 203. The plug-in terminal 400 is used to engage with the electrical device, which can quickly connect and disconnect the circuit connection between the switching power supply and the electrical device, making the user operation more convenient.

[0031] One or more positioning holes 202 are provided on both the left and right sides of the circuit board 200. Preferably, there are two positioning holes 202, evenly distributed on the left and right sides of the circuit board 200. The bottom wall of the housing 100 is provided with a boss 122 protruding toward the circuit board 200. The boss 122 is locked and fixed to the positioning holes 202 to prevent the circuit board 200 from shaking within the housing.

[0032] In one embodiment, a baffle 112 is provided on a side of the housing 100 close to the wire 300. The baffle 112 is located on the front side of the housing 100. A storage hole 113 for the wire 300 to pass through is provided on the baffle 112. The storage hole 113 is covered with a rubber ring 115 to seal the output end of the switching power supply and prevent debris from falling into the power supply during use.

[0033] Specifically, the baffle 112 is provided with a plurality of second through holes 116, which can facilitate observation of the internal conditions of the switching power supply and perform a preliminary inspection of the power supply without disassembly, thereby improving the heat dissipation performance of the power supply.

[0034] Furthermore, the housing 100 includes an upper cover 110 and a lower cover 120, which are connected by a snap-fit ​​connection. A clamping plate 111 is provided on the left and right sides of the upper cover 110, and a clamping block 121 is provided on the left and right sides of the lower cover 120. During assembly, the upper cover 110 is pushed along the direction of the clamping block 121 until the clamping plate 111 is engaged with the clamping block 121. The clamping plate 111 can be U-shaped, and the clamping block 121 can be a semi-cylindrical protrusion. The clamping block 121 is engaged through the U-shaped opening of the clamping plate 111. This snap-fit ​​connection facilitates assembly and disassembly, facilitating later maintenance and component replacement within the power supply.

[0035] Reference Figure 2Among them, support plates 114 are provided on the left and right sides of the upper cover 110 close to the wire 300, and the support plates 114 are against the lower cover 120. During installation, the side of the support plate 114 close to the card plate 111 is first placed in the lower cover 120, and the positions of the upper cover 110 and the lower cover 120 are preliminarily positioned to facilitate the assembly of the card plate 111 and the card block 121.

[0036] Specifically, the housing 100 is made of metal, preferably aluminum, and is provided with a plurality of heat dissipation holes 130 around the housing 100. The housing 100 and the circuit board 200 are fixed by bosses 122, and a gap is provided between the two to increase air circulation, thereby further improving the heat dissipation efficiency of the power supply.

[0037] Of course, once the above description of the representative embodiments is carefully considered, it will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, and other changes may be made to these specific embodiments, and that these changes are within the scope of the principles of the present invention. Therefore, the foregoing detailed description should be clearly understood to be given by way of illustration and example only, and the spirit and scope of the present invention shall be limited only by the appended claims and their equivalents.

Claims

1. A switching power supply, characterized in that: It includes a shell, a circuit board and a wire. A accommodating cavity is formed inside the shell. The circuit board is accommodated in the accommodating cavity and fixedly connected to the shell. The circuit board is provided with a plurality of first through holes for the wire cores to pass through. A soldering pad is provided on one side of the circuit board close to the bottom of the shell, and the soldering pad is arranged on the circumferential side of the first through hole. The wire core at one end of the wire passes through the first through hole and is soldered to the soldering pad.

2. The switching power supply according to claim 1, characterized in that: A plug-in terminal is provided at one end of the wire away from the soldering pad, and the plug-in terminal is used to be engaged and connected with an electrical device to provide power.

3. The switching power supply according to claim 1, wherein: One or more positioning holes are provided on both the left and right sides of the circuit board, and a boss protruding toward the circuit board is provided on the bottom wall of the housing, and the boss is locked and fixed to the positioning hole.

4. The switching power supply according to claim 1, wherein: A baffle is provided on one side of the shell close to the wire, the baffle is located on the front side of the shell, and a storage hole for the wire to pass through is provided on the baffle.

5. The switching power supply according to claim 4, characterized in that: The receiving hole is covered with a rubber ring to seal the output end of the switching power supply.

6. The switching power supply according to claim 4, characterized in that: The baffle is provided with a plurality of second through holes.

7. The switching power supply according to claim 1, wherein: The shell includes an upper cover and a lower cover, and the upper cover and the lower cover are snap-connected. A card plate is provided on the left and right sides of the upper cover, and a card block is provided on the left and right sides of the lower cover. During assembly, the upper cover is pushed along the direction of the card block until the card plate is snap-connected to the card block.

8. The switching power supply according to claim 7, characterized in that: The upper cover is provided with support plates on the left and right sides close to the wire, and the support plates are against the lower cover.

9. The switching power supply according to claim 1, wherein: A plurality of heat dissipation holes are arranged around the shell.

10. The switching power supply according to claim 1, wherein: The shell is made of metal material.

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