Printed board with double-sided patch nuts

Abstract

The utility model relates to the technical field of printed boards, and provides a printed board with double-sided patch nuts, which comprises a board body with a plurality of through holes; the number of the patch nuts is multiple, each patch nut is arranged in the corresponding through hole, each patch nut is provided with an anti-skid part, and the anti-skid parts abut against the interiors of the through holes; the number of the bonding pads is multiple, the multiple bonding pads are all arranged on the board body, and each bonding pad is located at the corresponding through hole. According to the technical scheme, the problems that in the prior art, a printed board is prone to being damaged due to external force, and glue flows away from the through holes during traditional glue pouring are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printed board technical field, specifically, relate to a printed board with double -sided patch nut. BACKGROUND

[0002] Now the most common one of printed board in whole machine fixed mode is one of adopting screw fastening, that is, the printed board is fixed on the screw hole or stud on the base or the shell directly. At this time, attention is paid to the influence of fixed mode and support spacing on the anti-shock and impact performance of the printed board. Unreasonable fixed mode or too large support spacing will affect the reliability of the whole machine. In addition, in some special industries, such as printed boards in power industry, a large number of inductance transformers and other heavy components are installed. Due to the layout and actual needs, the weight distribution of the whole printed board is uneven, and the stress is unbalanced. When some impact or shock occurs, the printed board is prone to delamination, breakage and component falling at the parts with larger bearing capacity.

[0003] In order to prevent dust and moisture, outdoor equipment has high requirements for the protection of printed board, which needs to be covered with glue, but since the printed board needs to be fixed on the shell, the fixed hole needs to be blocked in advance to prevent the glue from covering and flowing away. This will cause the completion of the overall glue filling process of the product, increase the complexity of the operation process and waste working hours. UTILITY MODEL CONTENT

[0004] The utility model provides a printed board with double -sided patch nut, solve the problem that printed board in related art is easy to be damaged by external force and glue flows away from the through hole when traditional glue is filled.

[0005] The technical scheme of the utility model is as follows:

[0006] A printed board with double -sided patch nut, comprising:

[0007] The plate body has a plurality of through holes;

[0008] The patch nut has a plurality of through holes, and each patch nut is arranged in a through hole.

[0009] The solder pad has a plurality of through holes, and each solder pad is arranged on the plate body.

[0010] Preferably, it further comprises:

[0011] The annular plate has a plurality of through holes, and each annular plate is arranged on the patch nut.

[0012] Preferably, the patch nut is a double-sided patch nut.

[0013] Preferably, the patch nut comprises:

[0014] a first body;

[0015] a second body, the diameter of the second body is smaller than the first body, the second body is arranged in the through hole, the first body is located on the surface of the plate body, the annular plate is arranged on the second body, and the annular plate abuts at the connection between the second body and the first body.

[0016] Preferably, the second body has a plurality of strip-shaped grooves on the circumferential side wall, and the plurality of strip-shaped grooves further comprise:

[0017] a pressing plate, one end of which is hingedly connected to one end of the strip-shaped groove;

[0018] a resilient member, one end of which is arranged on the other end of the pressing plate, and the other end of the resilient member is arranged on the pressing plate, the resilient member being used to provide a force for the pressing plate to abut against the inner wall of the through hole.

[0019] Preferably, the solder pad has a plurality of protrusions.

[0020] Preferably, the anti-skid part is arranged on the outer side of the pressing plate.

[0021] Preferably, the longitudinal section of the helical tooth is triangular.

[0022] The working principle and beneficial effects of the present application are as follows:

[0023] The double-sided patch nut provides additional adhesion, making the connection of the printed board and the shell more secure, and allowing easy operation during glue filling without affecting the fixing effect. Using the double-sided patch nut can simplify the installation process and improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above-mentioned features, technical characteristics, advantages and implementation modes of the present application will be further described in the following preferred embodiments in a clear and understandable manner combined with the drawings.

[0025] Figure 1 The present application is a printed board structure schematic diagram;

[0026] Figure 2 The present application is a printed board and electrical component structure schematic diagram;

[0027] Figure 3 The present application is a printed board and electrical component structure schematic diagram; Figure 1 The present application is a printed board and electrical component structure schematic diagram;

[0028] Figure 4 It is the patch nut structure schematic view of the utility model;

[0029] Figure 5 It is the first main body and the second main body front view of the utility model;

[0030] Figure 6 It is Figure 5 The partial close-up view of B.

[0031] In the drawing: 1, plate body;101, through hole;2, patch nut;201, first main body;202, second main body;2011, strip slot;3, solder pad;301, protrusion;4, annular plate;401, bevel gear;4011, through slot;5, pressing plate;501, anti-skid part;6, elastic piece. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the specific implementation of the utility model will be described below with reference to the drawings. Obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, without creating labor, other drawings can also be obtained according to these drawings, and other implementation manners.

[0033] In order to make the drawing simple, only the part related to the utility model is shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, the same structure or function in some drawings is only schematically shown one or only one is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0034] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] Referring to Figures 1-6For an embodiment of the utility model, propose a kind of printed board with double-sided patch nut, it include: plate body 1, with several through holes 101;Patch nut 2, with several, each patch nut 2 is set in one through hole 101, patch nut 2 has anti-skid portion 501, anti-skid portion 501 is abutted in through hole 101;Pad 3, with several, several pads 3 are all set on plate body 1, each pad 3 is located at one through hole 101.

[0037] In the above scheme, the plate body 1 of the printed board is made of a suitable insulating material, and its size is 295mm*420mm and its shape is rectangular. A plurality of through holes 101 are uniformly distributed on the plate body 1. The diameters of the through holes 101 are accurately designed according to the specifications of the selected patch nuts 2. For example, if the diameter of the screw rod part of the patch nut 2 is 3mm, the diameter of the through hole 101 can be designed as 3.2mm to ensure that the patch nut 2 can be smoothly installed and have a certain tolerance fit. The patch nuts 2 are selected from nuts of types SMTLMZ - M3*5.56*3.5 +1.53-sinhoo (back) and SMTLMZ - M3.2*5.5*3.5+0.2-Sinhoo (front), a total of 22 (11 on the back and 11 on the front). Each patch nut 2 is tightly arranged in a corresponding through hole 101. The anti-skid portion 501 of the patch nut 2 is designed with special textures, such as fine mesh textures on the surface of the nut in contact with the through hole 101. When the patch nut 2 is installed into the through hole 101, the textures tightly abut the inner wall of the through hole 101, increasing the friction, preventing the nut from rotating or displacing in the through hole 101.

[0038] The pad 3 is made of copper material to improve the conductivity. The shape of the pad 3 is plum blossom shape, and one pad 3 is arranged around each through hole 101. Each petal of the plum blossom pad 3 is provided with a small protrusion 301, and the height of the protrusion 301 is about 0.3mm. When the patch nut 2 is installed into the through hole 101 and contacts the pad 3, the protrusions 301 can be embedded into the small recesses on the surface of the patch nut 2, further increasing the contact area and friction between the pad 3 and the patch nut 2, so that the welding of the patch nut 2 is more firm. In the actual installation process, the patch nut 2 is first placed in the through hole 101, and then the patch nut 2 and the pad 3 are firmly welded together through a welding process such as reflow soldering, to ensure the stability of the overall structure of the printed board.

[0039] Further, it further includes: annular plate 4, with several, each annular plate 4 is sleeved on one patch nut 2, annular plate 4 has bevel gear 401, after annular plate 4 abuts on the surface of plate body 1, bevel gear 401 and the surface of plate body 1 form through groove 4011.

[0040] In the above scheme, the material of the annular plate 4 is the same as that of the patch nut 2, and has certain flexibility and insulation. The inner diameter of the annular plate 4 is slightly larger than the diameter of the second body 202 of the patch nut 2, so as to be able to be smoothly sleeved on the patch nut 2. The outer edge of the annular plate 4 is provided with inclined teeth 401, and the longitudinal section of the inclined teeth 401 is triangular. When the annular plate 4 is sleeved on the patch nut 2 and abuts against the surface of the plate body 1, a through groove 4011 is formed between the inclined teeth 401 and the surface of the plate body 1. At the 22 patch nuts 2 of the printed board, the annular plate 4 is installed in this way. In the installation process, the annular plate 4 is sleeved on the patch nut 2, and then the patch nut 2 is installed into the through hole 101 while the annular plate 4 is tightly abutted against the surface of the plate body 1. This structural design not only increases the connection stability between the patch nut 2 and the plate body 1, but also, in the subsequent welding of the patch nut 2, the welding liquid enters the through groove 4011, enhancing the welding effect.

[0041] Further, the patch nut 2 is a double-sided patch nut.

[0042] In the above scheme, the 11 patch nuts 2 on the back (model SMTLMZ-M3*5.56*3.5+1.53-sinhoo) are evenly distributed on the corners and the middle of the printed board which is relatively heavy. These nuts are fixed on the back of the plate body 1 through welding and are installed into the through hole 101, and the second body 202 part of the nut is deep into the through hole 101, and the first body 201 part is left on the surface of the back of the plate body 1, providing stable support for the printed board. The back nut and the plate body 1 maintain a certain insulation distance. The 11 patch nuts 2 on the front (model SMTLMZ-M3.2*5.5*3.5+0.2-Sinhoo) correspond to the back nuts one by one. In the installation, the back nuts are first welded and fixed, then the printed board is placed on the corresponding position of the shell, and then the front nuts are aligned with the back nuts through the through hole 101 and are welded and fixed. The patch nut 2 on the front plays a role of dam in the process of glue filling, and its height is slightly higher than the surface of the pad 3, for example, 0.5mm. When the glue filling operation is performed, the glue can cover the surface of the printed board, but due to the blockage of the front patch nut 2, the glue will not flow out from the via hole of the pad 3, ensuring the area and effect of glue filling, and further enhancing the fixed connection between the printed board and the shell.

[0043] Further, the patch nut 2 includes: a first body 201; a second body 202, the diameter of the second body 202 is smaller than that of the first body 201, the second body 202 is installed into the through hole 101, and the first body 201 is located on the surface of the plate body 1; an annular plate 4 is sleeved on the second body 202, and the annular plate 4 abuts against the connection between the second body 202 and the first body 201.

[0044] Further, the second body 202 has a plurality of strip-shaped grooves 2011 on the circumferential side wall, and the plurality of strip-shaped grooves 2011 further comprise: a pressing plate 5 hingedly connected to one end of the strip-shaped groove 2011; and an elastic member 6, one end of which is arranged on the other end of the pressing plate 5, and the other end of which is arranged on the pressing plate 5, the elastic member 6 being configured to provide a force for the pressing plate 5 to abut against the inner wall of the through hole 101.

[0045] In the above scheme, the elastic member 6 is a small spring, the wire diameter of the spring is about 0.1 mm, and the length of the spring is about 1 mm. One end of the spring is fixed on the other end of the pressing plate 5, and the other end of the spring is fixed on the inner wall of the strip-shaped groove 2011. When the patch nut 2 is inserted into the through hole 101, the pressing plate 5 is pushed out by the elastic force of the spring and abuts against the inner wall of the through hole 101.

[0046] Further, the solder pad 3 has a plurality of protrusions 301.

[0047] In the above scheme, when the patch nut 2 is welded with the solder pad 3, the bottom of the patch nut 2 is in contact with the solder pad 3, and the protrusions 301 can be closely fitted on the corresponding positions of the bottom of the patch nut 2, thereby increasing the contact area between the patch nut 2 and the solder pad 3. For example, during the welding process, when the solder melts, the protrusions 301 can be embedded in the solder, so that a more reliable connection is formed between the patch nut 2 and the solder pad 3. In this way, all the solder pads 3 on the printed board are designed as the above-mentioned solder pads 3 with protrusions 301, so that the connection reliability between the patch nut 2 and the solder pad 3 can be ensured, whether the printed board is in a normal working state or is subjected to external forces such as vibration and impact, thereby maintaining the stability of the overall structure of the printed board.

[0048] Further, the anti-skid part 501 is arranged on the outer side of the pressing plate 5.

[0049] In the above scheme, when the patch nut 2 is inserted into the through hole 101, the pressing plate 5 is pushed out by the elastic member 6 and the rough layer is in close contact with the inner wall of the through hole 101. Due to the micro engagement effect between the concave-convex structure of the rough layer and the inner wall of the through hole 101, the friction force is greatly increased. Among the 22 patch nuts 2 on the printed board, the anti-skid part 501 can effectively prevent the patch nut 2 from rotating or moving in the through hole 101 due to external forces such as vibration and impact, thereby ensuring the connection reliability between the printed board and the case, protecting the components on the printed board, and improving the reliability of the product.

[0050] Further, the longitudinal section of the oblique tooth 401 is triangular.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A printed circuit board with double-sided patch nuts, characterized in that, include: The plate (1) has several through holes (101); There are several patch nuts (2), each patch nut (2) is disposed in a through hole (101), and the patch nut (2) has an anti-slip part (501) which abuts against the through hole (101); The pads (3) are a plurality of each, and each of the pads (3) is disposed on the board body (1), and each pad (3) is located at a through hole (101).

2. A printed circuit board with double-sided patch nuts according to claim 1, characterized in that, Also includes: There are several annular plates (4), each annular plate (4) is sleeved on a patch nut (2), the annular plate (4) has helical teeth (401), after the annular plate (4) abuts against the surface of the plate body (1), the helical teeth (401) and the surface of the plate body (1) form a through groove (4011).

3. A printed circuit board with double-sided patch nuts according to claim 1, characterized in that, The patch nut (2) is a double-sided patch nut.

4. A printed circuit board with double-sided patch nuts according to claim 2, characterized in that, The patch nut (2) includes: First subject (201); The second body (202) has a smaller diameter than the first body (201). The second body (202) is disposed in the through hole (101). The first body (201) is located on the surface of the plate (1). The annular plate (4) is sleeved on the second body (202) and abuts against the connection between the second body (202) and the first body (201).

5. A printed circuit board with double-sided patch nuts according to claim 4, characterized in that, The second main body (202) has a plurality of strip grooves (2011) on its circumferential sidewall, and the plurality of strip grooves (2011) further include: The pressing plate (5) is hinged at one end to one end of the strip groove (2011); The elastic element (6) is disposed at one end on the other end of the pressing plate (5) and at the other end of the pressing plate (5). The elastic element (6) is used to provide the pressing plate (5) with force against the inner wall of the through hole (101).

6. A printed circuit board with double-sided patch nuts according to claim 1, characterized in that, Also includes: The pad (3) has several protrusions (301).

7. A printed circuit board with double-sided patch nuts according to claim 5, characterized in that, The anti-slip part (501) is located on the outside of the pressing plate (5).

8. A printed circuit board with double-sided patch nuts according to claim 2, characterized in that, The longitudinal section of the helical tooth (401) is triangular.

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