CN217336057U

CN217336057U - Circuit board structure

Info

Publication number: CN217336057U
Application number: CN202220103524.3U
Authority: CN
Inventors: 齐立敏; 于鹏展
Original assignee: Detection Electronic Manufacturing Beijing Co ltd
Current assignee: Detection Electronic Manufacturing Beijing Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-08-30
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a circuit board structure, including circuit board components and support, circuit board components includes the circuit board, the bottom of circuit board is equipped with the support, the bottom surface of support is equipped with the locating hole, the locating hole is the blind hole, be equipped with the printing opacity passageway that runs through it on the support, printing opacity passageway perpendicular to the circuit board, be equipped with the first through-hole that runs through it on the circuit board, first through-hole corresponds the printing opacity passageway sets up with one heart to light runs through circuit board structure. The utility model relates to a circuit board technical field provides a circuit board structure, and the tolerance chain with the equipment reduces to minimumly, reaches higher equipment precision to can promote the installation and put into power.

Description

Circuit board structure

Technical Field

The utility model relates to a circuit board technical field, more specifically relates to a circuit board structure.

Background

The circuit board structure comprises a support, a circuit board and the like, wherein when the circuit board structure is assembled, the assembly precision needs to be ensured, and positioning holes in the support are used as references to carry out positioning marks on other components in the process. Because the positioning holes are blind holes and are positioned on the back surface of the support (namely the end surface of the support on the side opposite to the circuit board), the end surface is invisible in the assembling process, and therefore, each component cannot be directly assembled according to the positions of the positioning holes. Therefore, in the assembly process, only a coordinate point shifting mode can be used, the position of the front side of the bracket (i.e. the end face of the bracket facing the circuit board) corresponding to the positioning hole is found by the fixture with high precision, and then the assembly is carried out according to the position. In addition, the above-mentioned fixtures are costly and also difficult to maintain regularly.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a circuit board structure, including circuit board components and support, circuit board components includes the circuit board, the bottom of circuit board is equipped with the support, the bottom surface of support is equipped with the locating hole, the locating hole is the blind hole, be equipped with the printing opacity passageway that runs through it on the support, printing opacity passageway perpendicular to the circuit board, be equipped with the first through-hole that runs through it on the circuit board, first through-hole corresponds the printing opacity passageway sets up with one heart to light runs through circuit board structure.

In a possible design, the bracket is provided with a second through hole, one end of the second through hole is communicated with the positioning hole, the other end of the second through hole extends to the top surface of the bracket, and the second through hole and the positioning hole form the light transmission channel.

In a possible design, the bracket is provided with a second through hole penetrating through the bracket, the second through hole and the positioning hole are arranged in a staggered manner, and the second through hole forms the light transmission channel.

In one possible design, the second through hole is arranged concentrically with the positioning hole.

In one possible design, the positioning hole is provided in plurality, and at least two of the positioning holes are provided with the second through hole correspondingly.

In one possible design, the diameter of the second through hole is smaller than the diameter of the positioning hole and smaller than the diameter of the first through hole.

In one possible design, the positioning hole is provided in a plurality, and the plurality of positioning holes are arranged at intervals along the first direction.

A possible design, the circuit board subassembly includes chip and scintillator, the scintillator the chip with the circuit board sets gradually from top to bottom, the printing opacity passageway with the chip sets up in a crisscross way.

In one possible design, the second through holes are provided in plurality, the first through holes are provided in plurality, and the second through holes correspond to the first through holes in a one-to-one manner.

In one possible design, the diameter of the second through hole is set to 0.3-0.7 mm.

The utility model discloses circuit board structure's printing opacity passageway can regard as the benchmark, reduces the tolerance chain of equipment to minimumly, reaches higher equipment precision to can promote and install into power.

The utility model discloses circuit board structure saves and uses fixture, has saved the cost, and the equipment process is low to personnel's operation requirement moreover, and stability is also higher.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

FIG. 1 is a schematic diagram of a related circuit board structure;

fig. 2 is a schematic cross-sectional view of a circuit board structure according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the bracket and circuit board assembly of FIG. 2;

FIG. 4 is a cross-sectional view of the stent of FIG. 2;

fig. 5 is a schematic cross-sectional view of a circuit board structure according to another embodiment of the present invention.

Reference numerals: 100-circuit board assembly, 101-circuit board, 102-chip, 103-scintillator, 104-first through hole, 200-bracket, 201-positioning hole, 202-second through hole and 300-light-transmitting channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in fig. 1, a related circuit board structure at present includes a support 200, a circuit board 101, and the like, wherein the circuit board structure needs to perform positioning marks of other components by using positioning holes 201 on the support 200 as references in an assembly process. Since the positioning hole 201 is a blind hole and is located on the back surface of the holder 200, it is not possible to directly assemble each component in accordance with the position of the positioning hole 201. Therefore, in the assembly process, the front position of the positioning hole 201 corresponding to the front surface of the positioning hole 200 can be found only by the fixture with high precision, and then the assembly is carried out according to the position, but due to the precision of the fixture, the assembly and the like, the position may have deviation, and the assembly of the components is deviated. In addition, the above-mentioned fixtures are costly and periodic maintenance is very difficult.

Referring to fig. 2 to 5, the circuit board structure of the embodiment of the present invention includes a circuit board assembly 100 and a support 200, wherein the circuit board assembly 100 includes a circuit board 101, the support 200 is disposed at the bottom of the circuit board 101, and a positioning hole 201 is disposed on the bottom surface of the support 200, and the positioning hole 201 is a blind hole. In particular, the support 200 is provided with a light-transmitting channel 300 penetrating through the support, the light-transmitting channel 300 is perpendicular to the circuit board 101, meanwhile, the circuit board 101 is provided with a first through hole 104 penetrating through the support, and the first through hole 104 and the light-transmitting channel 300 are concentrically arranged to allow light to penetrate through the circuit board structure. Therefore, the light-transmitting channel 300 of the circuit board structure can be used as a reference, the tolerance chain of assembly is reduced to the minimum, higher assembly precision is achieved, and the mounting power can be improved.

As shown in fig. 2 to 4, the circuit board assembly 100 includes the circuit board 101, a chip 102 and a scintillator 103, wherein the scintillator 103, the chip 102 and the circuit board 101 are sequentially disposed from top to bottom. The circuit board assembly 100 is not limited to include the chip 102 and the scintillator 103, and other components may be provided on the circuit board 101.

As shown in fig. 2 to 4, the bracket 200 is provided with four positioning holes 201, the four positioning holes 201 are arranged at intervals along the first direction, wherein two positioning holes 201 are staggered from the position of the chip 102, and the other two positioning holes 201 are located in the vertical direction projection of the chip 102, but not limited thereto, the number and the positions of the positioning holes 201 can be changed according to the actual requirement of the circuit board structure. In addition, the diameter of each positioning hole 201 can be the same, and there can be differences. The bracket 200 is provided with a second through hole 202 at two positioning holes 201 staggered from the position of the chip 102, wherein both positioning holes are provided with one second through hole 202 correspondingly, but the invention is not limited thereto, for example, only one positioning hole 201 is provided with one second through hole 202 correspondingly. The second through hole 202 is concentrically disposed with the corresponding positioning hole 201, one end of the second through hole 202 is communicated with the top of the positioning hole 201, and the other end extends to the top surface of the bracket 200. Therefore, the second through hole 202 and the positioning hole 201 form a channel penetrating through the bracket 201 in the vertical direction, that is, the second through hole 202 and the positioning hole 201 form the light-transmitting channel 300, and the light-transmitting channel 300 is staggered with the chip 102 and the scintillator 103 respectively, so as to prevent the chip 102 and the scintillator 103 from interfering light. The circuit board 101 is provided with two first through holes 104, the number of the first through holes 104 corresponds to the number of the light-transmitting channels 300, and the first through holes 104 correspond to the second through holes 202 one by one. The diameter of the second through hole 202 is smaller than the diameter of the positioning hole 201 and smaller than the diameter of the first through hole 104, in this example, the diameter of the second through hole 202 is 0.5mm, but the diameter of the second through hole may be 0.3-0.7 mm.

Therefore, when the circuit board structure is assembled, the circuit board 101 and the bracket 200 are fixed to ensure that the first through hole 104 and the second through hole 202 are concentric, the light-transmitting channel 300 and the first through hole 104 form a light channel, then the second through hole 202 is irradiated by light on the lower side of the bracket 200 or the upper side of the circuit board 101, the camera recognizes the position of the second through hole 202, and other components (the scintillator 103 and the chip 102) are installed by taking the light-transmitting channel 300 as a reference. Therefore, the tolerance chain of assembly can be reduced to the lowest level in the process of installing the circuit board structure, higher assembly precision is achieved, and the success rate of installation is improved. The existing installation method, namely the method of transferring the positioning holes by using the fixture has a tolerance chain which is 3 to 4 times that of the example, the cost of the fixture is about 1 ten thousand yuan, the fixture can be omitted in the installation process of the circuit board structure of the example, the production cost is saved, and meanwhile, the influences of the machining precision of the fixture, the assembly precision of the fixture, the abrasion of the fixture and the like are eliminated. The mounting accuracy of the circuit board structure of this example can be improved to + -20um accuracy, with a significant improvement over the + -40um accuracy of existing related structures. In addition, the installation process personnel operating requirement of the circuit board structure of this example is low, mostly mechanical automatic installation, and stability is very high.

In some exemplary embodiments, as shown in fig. 5, the support 200 is provided with two second through holes 202 penetrating therethrough, and the second through holes 202 are offset from the positioning holes 201 and also offset from the chip 102 and the scintillator 103. The second through hole 202 is concentrically arranged with the first through hole 104, and the diameter of the second through hole 202 is smaller than the diameter of the first through hole 104. Therefore, the light-transmitting channel 300 is formed only by the second through hole 202, when the circuit board structure is assembled, the circuit board 101 is fixed to the bracket 200 to ensure that the first through hole 104 and the second through hole 202 are concentric, the second through hole 202 and the first through hole 104 form a light path, then the second through hole 202 is irradiated by light on the lower side of the bracket 200 or the upper side of the circuit board 101, the camera recognizes the position of the second through hole 202, and other components (the scintillator 103 and the chip 102) are installed by taking the second through hole 202 as a reference.

Combine above-mentioned embodiment, the utility model discloses circuit board structure's printing opacity passageway can regard as the benchmark, and the tolerance chain with the equipment reduces to minimumly, reaches higher equipment precision to can promote to install into power. The utility model discloses circuit board structure saves and uses fixture, has saved the cost, and the equipment process is low to personnel's operation requirement moreover, and stability is also higher.

In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure "and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the structure referred to has a specific direction, is constructed and operated in a specific direction, and thus, cannot be construed as limiting the present invention.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may refer to a direct connection, an indirect connection through intervening media, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the present invention has been described in connection with the above embodiments, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. Any modifications and variations in form and detail of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, but it is still intended to cover in the appended claims all such modifications and variations as fall within the true spirit and scope of the invention.

Claims

1. The utility model provides a circuit board structure, includes circuit board assembly and support, circuit board assembly includes the circuit board, the bottom of circuit board is equipped with the support, the bottom surface of support is equipped with the locating hole, the locating hole is the blind hole, its characterized in that, be equipped with the printing opacity passageway that runs through it on the support, the printing opacity passageway perpendicular to the circuit board, be equipped with the first through-hole that runs through it on the circuit board, first through-hole corresponds the printing opacity passageway sets up with one heart to light runs through circuit board structure.

2. The circuit board structure according to claim 1, wherein the support is provided with a second through hole, one end of the second through hole is communicated with the positioning hole, the other end of the second through hole extends to the top surface of the support, and the second through hole and the positioning hole form the light-transmitting channel.

3. The circuit board structure according to claim 1, wherein the support is provided with a second through hole penetrating through the support, the second through hole and the positioning hole are arranged in a staggered manner, and the second through hole forms the light-transmitting channel.

4. The circuit board structure according to claim 2, wherein the second through hole is provided concentrically with the positioning hole.

5. The circuit board structure according to claim 2, wherein the positioning holes are provided in plural, and at least two of the positioning holes are provided with the second through holes correspondingly.

6. The circuit board structure according to claim 2, wherein the diameter of the second through hole is smaller than the diameter of the positioning hole and smaller than the diameter of the first through hole.

7. The circuit board structure according to claim 2, wherein the positioning hole is provided in plurality, and the plurality of positioning holes are arranged at intervals in the first direction.

8. The circuit board structure according to any one of claims 1 to 7, wherein the circuit board assembly comprises a chip and a scintillator, the chip and the circuit board are sequentially arranged from top to bottom, and the light-transmitting channels are arranged in a staggered manner with the chip.

9. The circuit board structure according to any one of claims 2 to 7, wherein there are a plurality of the second through holes, a plurality of the first through holes, and the second through holes correspond to the first through holes one to one.

10. A circuit board structure according to any of claims 2-7, characterized in that the diameter of the second through hole is arranged to be 0.3-0.7 mm.