Multilayer printed circuit board

Abstract

The utility model relates to the technical field of multi-layer printed circuit boards, in particular to a multi-layer printed circuit board which comprises a circuit board body, the bottom end of the circuit board body is fixedly connected with a vertically-arranged glue storage barrel, the inner side of the glue storage barrel is fixedly connected with a baffle, the bottom end of the glue storage barrel is fixedly connected with a fixing foot, and the fixing foot is fixedly connected with the baffle. According to the utility model, through the arrangement of the glue storage cylinder, the baffle plate, the fixing feet, the fixing sheets and the round nails, the circuit board can be installed without screws, the installation efficiency is improved, and when the circuit board body needs to be installed, the circuit board body is placed at a required position and is pressed downwards, so that the circuit board body can be installed in the glue storage cylinder. At the moment, the round nails and the fixing pieces are stressed to cause breakage of the fixing pieces, the round nails puncture the baffles to enable glue on the inner side of the glue storage barrel to flow to the inner sides of the fixing feet, then the circuit board body continues to be pressed for a period of time, and the circuit board body can be fixed to the inner side of the machine when the glue is solidified.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-layer printed circuit boards, in particular to a multi-layer printed circuit board. Background Art

[0002] Printed circuit board is also called circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, etc. Printed circuit board makes the circuit miniaturized and intuitive, and plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout, especially with the rapid development of electronic products nowadays. The performance of multi-layer printed circuit boards has been greatly improved compared with single-layer printed circuit boards, so the use of multi-layer printed circuit boards is becoming more and more extensive.

[0003] With the development of society, the existing multilayer printed circuit board has made great progress and is widely used. However, during transportation, the multilayer circuit board is easy to shake and bump in the protective shell, causing damage to the circuit board, and the circuit board will emit heat when in use. The existing circuit board has no heat dissipation device. When the existing circuit board is installed inside the machine, it is usually installed with screws, which is more troublesome. Therefore, a multilayer printed circuit board is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-layer printed circuit board to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multilayer printed circuit board comprises a circuit board body, a vertically arranged glue storage cylinder is fixedly connected to the bottom end of the circuit board body, a baffle is fixedly connected to the inner side of the glue storage cylinder, a fixed foot is fixedly connected to the bottom end of the glue storage cylinder, an inclined fixed plate is fixedly connected to the bottom end of the fixed foot, a round nail is fixedly connected to the end of the fixed plate away from the fixed foot, a heat conducting block fixedly connected to the circuit board body is provided on one side of the glue storage cylinder, a heat sink is fixedly connected to the bottom end of the heat conducting block, and heat dissipation frames are symmetrically provided on both sides of the heat sink.

[0007] Preferably, one side of the heat conductive block is provided with a rubber pad that fits tightly with the bottom end of the circuit board body, the bottom end of the rubber pad is fixedly connected to a vertically arranged limit rod, the bottom end of the limit rod is fixedly connected to a sliding plate, the outer side of the sliding plate is slidably connected to a vertically arranged fixed cylinder, the inner side of the fixed cylinder is provided with a reset spring, the bottom end of the fixed cylinder is fixedly connected to a first protective shell, one side of the first protective shell is embedded with a first magnet, the side of the first protective shell close to the first magnet is rotatably connected to a second protective shell, the side of the second protective shell close to the first protective shell is embedded with a second magnet, and the inner side of the second protective shell is fixedly connected to a foam pad.

[0008] Preferably, the number of the rubber pad, the limiting rod, the sliding plate, the fixed cylinder and the return spring are four, one end of the return spring is fixedly connected to the sliding plate, the end of the return spring away from the sliding plate is fixedly connected to the inner bottom end of the fixed cylinder, the first protective shell and the second protective shell are the same in shape and size, the first magnet and the second magnet are the same in shape and size, and the foam pad fits tightly against the circuit board body.

[0009] Preferably, the number of the rubber storage cylinder, the baffle, the fixing feet and the round nails is six each, and the number of the fixing plates inside each fixing foot is four.

[0010] Preferably, the shape of the heat-conducting block is cylindrical, the number of the heat-conducting blocks is twelve, and the heat-conducting blocks are distributed in an array on the top of the heat sink.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the circuit board can be installed without screws by providing the glue storage cylinder, baffle, fixed foot, fixed sheet and round nail, thereby improving the installation efficiency. When the circuit board body needs to be installed, the circuit board body is placed at the required position and pressed downward. At this time, the round nail and the fixed sheet are stressed, causing the fixed sheet to break, and the round nail pierces the baffle so that the glue inside the glue storage cylinder flows to the inside of the fixed foot. Then, the circuit board body is pressed for a period of time. When the glue solidifies, the circuit board body can be fixed inside the machine.

[0013] 2. In the utility model, the heat-conducting block, the heat sink and the heat dissipation frame are provided to dissipate part of the heat generated by the circuit board body during operation, thereby improving the heat dissipation efficiency of the circuit board body and increasing the service life of the circuit board body;

[0014] 3. In the utility model, by providing the rubber pad, the limit rod, the sliding plate, the fixed cylinder, the reset spring, the first protective shell, the first magnet, the second protective shell, the second magnet and the foam pad, the circuit board body can be prevented from shaking and bumping inside the protective shell during transportation, thereby reducing the loss of the circuit board body. When the circuit board body needs to be transported, the circuit board body is first placed inside the foam pad located inside the second protective shell, and then the first protective shell is closed. At this time, the rubber pad contacts the circuit board body, the limit rod is forced to drive the sliding plate to slide inside the fixed cylinder, and the reset spring is compressed until the first magnet is magnetically connected with the second magnet. Since the reset spring is always under force, the rubber pad can press the circuit board body against the inside of the foam pad to prevent the circuit board body from shaking inside the first protective shell and the second protective shell during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall opening structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the circuit board body of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the utility model;

[0018] Figure 4 This is a schematic diagram of the bottom structure of the circuit board body of the utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the rubber storage cylinder of the utility model;

[0020] Figure 6 This is a schematic diagram of the heat sink structure of the utility model.

[0021] In the figure: 1. circuit board body; 2. glue storage cylinder; 3. baffle; 4. fixing foot; 5. fixing plate; 6. round nail; 7. heat conductive block; 8. heat sink; 9. heat sink frame; 10. rubber pad; 11. limit rod; 12. sliding plate; 13. fixing cylinder; 14. reset spring; 15. first protective shell; 16. first magnet; 17. second protective shell; 18. second magnet; 19. foam pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0025] See also Figure 1-6, the utility model provides a technical solution:

[0026] A multilayer printed circuit board comprises a circuit board body 1, a vertically arranged glue storage cylinder 2 is fixedly connected to the bottom end of the circuit board body 1, a baffle 3 is fixedly connected to the inner side of the glue storage cylinder 2, a fixing foot 4 is fixedly connected to the bottom end of the glue storage cylinder 2, an inclined fixing plate 5 is fixedly connected to the bottom end of the fixing foot 4, a round nail 6 is fixedly connected to the end of the fixing plate 5 away from the fixing foot 4, a heat conducting block 7 fixedly connected to the circuit board body 1 is provided on one side of the glue storage cylinder 2, a heat sink 8 is fixedly connected to the bottom end of the heat conducting block 7, and heat dissipation frames 9 are symmetrically provided on both sides of the heat sink 8.

[0027] A rubber pad 10 is provided on one side of the heat conducting block 7, which is tightly fitted with the bottom end of the circuit board body 1. A vertically arranged limit rod 11 is fixedly connected to the bottom end of the rubber pad 10. A sliding plate 12 is fixedly connected to the bottom end of the limit rod 11. A vertically arranged fixed cylinder 13 is slidably connected to the outer side of the sliding plate 12. A reset spring 14 is provided on the inner side of the fixed cylinder 13. A first protective shell 15 is fixedly connected to the bottom end of the fixed cylinder 13. A first magnet 16 is embedded in one side of the first protective shell 15. A second protective shell 17 is rotatably connected to the side of the first protective shell 15 close to the first magnet 16. A second magnet 18 is embedded in the side of the second protective shell 17 close to the first protective shell 15. A foam pad 19 is fixedly connected to the inner side of the second protective shell 17. The rubber pad 10. There are four limit rods 11, sliding plates 12, fixed cylinders 13 and reset springs 14. One end of the reset spring 14 is fixedly connected to the sliding plate 12. The end of the reset spring 14 away from the sliding plate 12 is fixedly connected to the inner bottom end of the fixed cylinder 13. The first protective shell 15 and the second protective shell 17 are the same in shape and size. The first magnet 16 and the second magnet 18 are the same in shape and size. The foam pad 19 fits tightly with the circuit board body 1. There are six glue storage cylinders 2, baffles 3, fixed feet 4 and round nails 6. There are four fixed plates 5 on the inner side of each fixed foot 4. The shape of the heat conductive block 7 is cylindrical. There are twelve heat conductive blocks 7, and the heat conductive blocks 7 are distributed in an array at the top of the heat sink 8.

[0028] Working process: When the circuit board body 1 needs to be transported, first put the circuit board body 1 into the inner side of the foam pad 19 located inside the second protective shell 17, and then close the first protective shell 15. At this time, the rubber pad 10 contacts the circuit board body 1, and the limit rod 11 is forced to drive the sliding plate 12 to slide inside the fixed cylinder 13, and the reset spring 14 is compressed until the first magnet 16 and the second magnet 18 are magnetically connected. Since the reset spring 14 is always under force, the rubber pad 10 can press the circuit board body 1 on the inner side of the foam pad 19 to prevent the circuit board body 1 from being stuck between the first protective shell 15 and the second protective shell 1 during transportation. 7 shakes inside. When the circuit board body 1 needs to be installed, the circuit board body 1 is placed in the required position and pressed downward. At this time, the round nail 6 and the fixing plate 5 are stressed, causing the fixing plate 5 to break, and the round nail 6 pierces the baffle 3 so that the glue on the inside of the glue storage cylinder 2 flows to the inside of the fixing foot 4. Then, the circuit board body 1 is pressed for a period of time. When the glue solidifies, the circuit board body 1 can be fixed on the inside of the machine. The heat generated by the circuit board body 1 during operation can be partially dissipated through the provided heat conducting block 7, heat sink 8 and heat sink frame 9, thereby improving the heat dissipation efficiency of the circuit board body 1 and increasing the service life of the circuit board body 1.

[0029] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multilayer printed circuit board, comprising a circuit board body (1), characterized in that: The bottom end of the circuit board body (1) is fixedly connected to a vertically arranged glue storage cylinder (2), the inner side of the glue storage cylinder (2) is fixedly connected to a baffle (3), the bottom end of the glue storage cylinder (2) is fixedly connected to a fixed foot (4), the bottom end of the fixed foot (4) is fixedly connected to an inclined fixed sheet (5), the end of the fixed sheet (5) away from the fixed foot (4) is fixedly connected to a round nail (6), one side of the glue storage cylinder (2) is provided with a heat conduction block (7) fixedly connected to the circuit board body (1), the bottom end of the heat conduction block (7) is fixedly connected to a heat sink (8), and heat dissipation frames (9) are symmetrically provided on both sides of the heat sink (8).

2. A multilayer printed circuit board according to claim 1, characterized in that: A rubber pad (10) is provided on one side of the heat conducting block (7) and is tightly fitted with the bottom end of the circuit board body (1); a vertically arranged limit rod (11) is fixedly connected to the bottom end of the rubber pad (10); a sliding plate (12) is fixedly connected to the bottom end of the limit rod (11); a vertically arranged fixed cylinder (13) is slidably connected to the outer side of the sliding plate (12); a return spring (14) is provided on the inner side of the fixed cylinder (13); a first protective shell (15) is fixedly connected to the bottom end of the fixed cylinder (13); a first magnet (16) is embedded in one side of the first protective shell (15); a second protective shell (17) is rotatably connected to the side of the first protective shell (15) close to the first magnet (16); a second magnet (18) is embedded in the side of the second protective shell (17) close to the first protective shell (15); and a foam pad (19) is fixedly connected to the inner side of the second protective shell (17).

3. A multilayer printed circuit board according to claim 2, characterized in that: The number of the rubber pad (10), the limiting rod (11), the sliding plate (12), the fixed tube (13) and the reset spring (14) is four; one end of the reset spring (14) is fixedly connected to the sliding plate (12); the end of the reset spring (14) away from the sliding plate (12) is fixedly connected to the inner bottom end of the fixed tube (13); the first protective shell (15) and the second protective shell (17) are of the same shape and size; the first magnet (16) and the second magnet (18) are of the same shape and size; and the foam pad (19) is tightly fitted to the circuit board body (1).

4. A multilayer printed circuit board according to claim 1, characterized in that: The number of the rubber storage cylinder (2), the baffle (3), the fixing foot (4) and the round nail (6) is six, and the number of the fixing plates (5) inside each fixing foot (4) is four.

5. A multilayer printed circuit board according to claim 1, characterized in that: The heat-conducting block (7) is cylindrical in shape, there are twelve heat-conducting blocks (7), and the heat-conducting blocks (7) are distributed in an array on the top of the heat sink (8).

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