Shell and PCB integrated structure and charger

Abstract

The utility model relates to a shell and PCB integrated structure and a charger, the structure comprises a shell and a PCB, the shell is provided with a plurality of claw head type fasteners, the PCB is provided with a buckle hole, each claw head type fastener comprises a convex column and a plurality of buckle claws extending from the top surface of the convex column, the plurality of buckle claws are encircled into a circle, and the buckle holes are formed in the convex column. Each buckling claw is provided with a supporting foot with an arc-shaped transverse section, the supporting feet are arranged at intervals and distributed around a circle, the top of each supporting foot is provided with an inverted buckle, the top of each inverted buckle is turned outwards to be in a wedge shape, and the supporting feet of the buckling claws are arc-shaped and combined into a circular ring. The tops of the buckling claws are reversely buckled at intervals, are distributed around a circle and are in a hollow circular truncated cone shape as a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical products with a PCB board, and in particular to an integrated structure of a shell and a PCB board and a charger. Background Art

[0002] At present, most electronic products on the market use PCB boards. Many common electronic products in life, such as chargers and computers, use PCB boards. There are also many ways to fix the PCB board on the shell. The common fixing method is to open a hole on the PCB, protrude a hole column on the shell, and fix the PCB board by screwing into the hole column. Screws must be used in this structure, usually equipped with multiple screws, and disassembly and assembly takes a certain amount of time, which is inconvenient. Moreover, for some compact products, such as chargers, the screws are too close to the copper foil on the circuit board, which will cause electromagnetic interference or safety problems. Utility Model Content

[0003] In view of this, a shell and PCB board integrated structure and a charger are provided which are compact in structure, easy to install, cost-saving, easy to produce, safe and reliable.

[0004] A shell and PCB integrated structure, comprising a shell and a PCB, wherein the shell is provided with a plurality of claw-type fasteners, and the PCB has a buckle hole, each claw-type fastener comprises a boss and a plurality of claws extending from the top surface of the boss, wherein the plurality of claws are arranged in a circle, each claw has a foot with an arc-shaped transverse cross section, the plurality of feet are spaced apart from each other and distributed around a circle, the top of each foot has an undercut, the top of the undercut is turned outward to form a wedge shape, the feet of each claw are arc-shaped and combined into a ring, the undercuts on the top of each claw are spaced apart from each other and distributed around a circle and are hollow truncated cone-shaped as a whole.

[0005] In some preferred embodiments, the plurality of claw-type fasteners and the housing are integrally formed by injection molding.

[0006] Furthermore, the number of the plurality of claw-type fasteners is four or more and they are evenly distributed at the four corners or the middle of the shell.

[0007] In some preferred embodiments, the PCB board has a plurality of buckle holes, and is arranged corresponding to the positions of the plurality of claw-type fasteners.

[0008] Preferably, the distance between the bottom surface of the outward-turned wedge-shaped portion of each undercut top and the top surface of the boss is equal to or slightly smaller than the thickness of the PCB board at the button hole position.

[0009] In some specific embodiments, the outer surface of the top of the undercut is an inclined surface to guide the undercut to penetrate into the button hole, and the outward-turned wedge-shaped portion of the top of each undercut passes through the button hole and extends out to be stuck in the button hole.

[0010] Specifically, the plurality of claw-type fasteners are plastic parts and have a certain elasticity. There is a predetermined gap between the plurality of claw-type fasteners so that each fastener can be compressed and retracted to pass through the buttonhole, and after passing through the buttonhole, the undercut can open and clamp the buttonhole.

[0011] In some preferred embodiments, the plurality of claw-type fasteners are distributed in a circle of four, and the plurality of claw-type fasteners are mushroom-shaped as a whole.

[0012] Furthermore, the shell has a bottom shell and a plurality of side shells, a plurality of the claw-type fasteners are distributed on the bottom shell, and the plurality of the side shells and the bottom shell are an integrally formed structure.

[0013] Also, a charger is provided, the charger comprising a shell and a PCB board installed in the shell, the shell and the PCB board are an integrated structure of the shell and the PCB board as described above.

[0014] In the above-mentioned integrated structure of the housing and the PCB board and the charger, a plurality of claw-type fasteners are provided on the housing, which are buckled into the buckle holes of the PCB board through the fasteners. The structure is compact and firm, convenient for disassembly and assembly, simple to operate, saves installation time, does not require extra screws, saves materials, reduces labor costs and equipment investment. Moreover, this fastener can be integrally formed with the housing, which is convenient for production and manufacturing, improves production efficiency, avoids loss, is easy to use, and saves user time. In addition, by replacing screws with fasteners, the problem of interference between screws and lines can be solved in a limited and compact space, thereby enhancing the safety of electronic products and increasing the service life of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the integrated structure of the housing and the PCB board provided in the embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the claw head fastener.

[0017] Figure 3 yes Figure 1 Schematic diagram of the main structure of the claw head fastener.

[0018] In the attached figure:

[0019] 10. Shell; 101. Bottom shell; 102. Side shell; 11. Claw-type fastener; 12. Boss; 13. Claw; 14. Leg; 15. Undercut; 151. Outward-turned wedge-shaped portion; 152. Inclined surface; 20. PCB board; 21. Claw hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 and Figure 2 , showing an integrated structure of a housing and a PCB board provided by an embodiment of the utility model, comprising a housing 10 and a PCB board 20, wherein the housing 10 is provided with a plurality of claw-type fasteners 11, and the PCB board 20 has a buckle hole 21, each claw-type fastener 11 comprises a boss 12, and a plurality of buckles 13 extending from the top surface of the boss 12, wherein the plurality of buckles 13 are arranged in a circle, and each buckle 13 has a support leg 14 with an arc-shaped transverse cross section, wherein the plurality of support legs 14 are spaced apart from each other and distributed around a circle, and the top of each support leg 14 has an undercut 15, and the top of the undercut 15 is turned outward to be wedge-shaped, and the support legs 14 of each buckle claw 13 are arc-shaped and combined into a circular ring, and the undercuts 15 on the top of each buckle claw 13 are spaced apart from each other and distributed around a circle and are hollow truncated cone-shaped as a whole.

[0022] Preferably, the plurality of claw-type fasteners 11 and the housing 10 are an integrally-molded structure, and the claw-type fasteners 11 and the housing 10 are plastic parts, which are convenient to manufacture, reduce production costs, and are strong and durable. Furthermore, the plurality of claw-type fasteners 11 are more than four and are evenly distributed at the four corners or the middle of the housing 10, so as to stably support the PCB board 20. In some preferred embodiments, the PCB board 20 has a plurality of buckle holes 21, which are arranged corresponding to the positions of the plurality of claw-type fasteners 11. The aperture of the buckle hole 21 corresponds to the overall outer diameter of the plurality of legs 14, so that the legs 14 are stuck in the buckle hole 21.

[0023] Preferably, if Figure 3 As shown, the distance D1 between the bottom surface of the outward-turned wedge-shaped portion 151 at the top of each undercut 15 and the top surface of the boss 12 is equal to or slightly smaller than the thickness of the PCB board 20 at the position of the button hole 21.

[0024] In some specific embodiments, the top outer surface of the undercut 15 is a slope 152 to guide the undercut 15 to pass through the button hole 21 , and the outward-turned wedge-shaped portion 151 at the top of each undercut 15 passes through the button hole 21 and extends out to be stuck in the button hole 21 .

[0025] Specifically, the plurality of claw-type fasteners 11 are plastic parts and have a certain elasticity. There is a predetermined gap between the plurality of claw-type fasteners 11 so that each fastener 11 is compressed and retracted to pass through the button hole 21 , and after passing through the button hole 21 , the undercut 15 can open and clamp the button hole 21 .

[0026] In some preferred embodiments, the plurality of claw-type fasteners 11 are four in number and are arranged in a circle, and the plurality of claw-type fasteners 11 are mushroom-shaped as a whole. Further, the housing 10 has a bottom shell 101 and a plurality of side shells 102, the plurality of claw-type fasteners 11 are arranged on the bottom shell 101, and the plurality of side shells 102 and the bottom shell 101 are an integrally formed structure.

[0027] The present invention also provides a charger, which includes a housing 10 and a PCB board 20 installed in the housing 10. The housing 10 and the PCB board 20 are an integrated structure of the housing 10 and the PCB board 20 as described above. The charger also has an upper cover to cover the housing 10.

[0028] In the above-mentioned integrated structure of the housing and the PCB board and the charger, the housing 10 is provided with a plurality of claw-type fasteners 11, which are buckled into the buckle holes 21 of the PCB board 20 through the fasteners 11. The overall structure is compact and firm, convenient for disassembly and assembly, simple to operate, and saves installation time. No extra screws are required, which saves materials, reduces labor costs and equipment investment. Moreover, this fastener 11 can be integrally formed with the housing 10, which is convenient for production and manufacturing, improves production efficiency, avoids loss, is easy to use, and saves user time. In addition, by replacing the screws with the fasteners 11, the problem of interference between the screws and the circuit can be solved in a limited and compact space, thereby enhancing the safety of electronic products and increasing the service life of the products.

[0029] It should be noted that the present invention is not limited to the above-mentioned embodiments. According to the creative spirit of the present invention, those skilled in the art may also make other changes. These changes made according to the creative spirit of the present invention should be included in the scope of protection required by the present invention.

Claims

1. A housing and PCB board integrated structure, comprising a housing and a PCB board, characterized in that: The shell is provided with a plurality of claw-type fasteners, the PCB board has a buckle hole, each claw-type fastener includes a boss and a plurality of claws extending from the top surface of the boss, the plurality of claws are arranged in a circle, each claw has a foot with an arc-shaped transverse cross-section, the plurality of feet are spaced apart from each other and distributed around a circle, the top of each foot has an inverted buckle, the top of the inverted buckle is turned outward to form a wedge shape, the feet of each claw are arc-shaped and combined into a ring, the top inverted buckles of each claw are spaced apart from each other and distributed around a circle and the whole is in the shape of a hollow truncated cone.

2. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The plurality of claw-type fasteners and the housing are integrally formed by injection molding.

3. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The number of the plurality of claw-type fasteners is more than four and they are evenly distributed at the four corners or the middle of the shell.

4. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The PCB board has a plurality of buckle holes, which are arranged corresponding to the positions of the plurality of claw-type buckles.

5. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The distance between the bottom surface of the outward-turned wedge-shaped portion of each undercut top and the top surface of the boss is equal to or slightly smaller than the thickness of the PCB board at the button hole position.

6. The integrated structure of housing and PCB board as claimed in claim 5, characterized in that: The outer surface of the top of the undercut is an inclined surface to guide the undercut to penetrate into the button hole, and the outward-turned wedge-shaped portion of each undercut top passes through the button hole and extends out to be stuck in the button hole.

7. The housing and PCB integrated structure as claimed in claim 6, characterized in that: The plurality of claw-head fasteners are plastic parts with certain elasticity, and there are predetermined gaps between the plurality of claw-head fasteners so that each fastener can be compressed and retracted to pass through the button hole, and after passing through the button hole, the undercut can be opened and clamped in the button hole.

8. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The plurality of claw-type fasteners are distributed in a circle of four, and the plurality of claw-type fasteners are mushroom-shaped as a whole.

9. The housing and PCB integrated structure as claimed in claim 1, characterized in that: The shell comprises a bottom shell and a plurality of side shells, a plurality of the claw-type fasteners are distributed on the bottom shell, and the plurality of the side shells and the bottom shell are an integrally formed structure.

10. A charger comprising a housing and a PCB board installed in the housing, characterized in that: The housing and the PCB board are an integrated structure of the housing and the PCB board as described in any one of claims 1-9.

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