CN219575978U - Image signal generator and sub-board plug-in assembly thereof - Google Patents

Abstract

The utility model discloses an image signal generator and a sub-board plug-in component thereof, wherein the sub-board plug-in component comprises: the sliding chute assemblies are in one-to-one correspondence with the sub-boards; the chute assembly includes: a chute; the sliding chute is used for being arranged at a preset position on a digital bottom plate of the image signal generator; the daughter board is used for detachably inserting an inserting port at a preset position on the digital bottom plate along the sliding groove. According to the scheme, the design that the daughter board is used for being detachably inserted into the insertion port at the preset position on the digital bottom plate along the sliding groove can achieve the effect that the daughter board is installed in the insertion port of the digital bottom plate in an inserting and pulling mode, so that the daughter board is convenient to assemble and disassemble.

Description

Image signal generator and sub-board plug-in assembly thereof

Technical Field

The utility model relates to the technical field of image signal generators, in particular to an image signal generator and a daughter board plug assembly thereof.

Background

In the existing image signal generator, the assembling relationship between the sub-board and the digital bottom board is not a plug-in structure, the sub-board cannot be disassembled, and meanwhile, the sub-board cannot be replaced, in this case, a customer can select one image signal generator with one sub-board function based on own needs, however, when the subsequent customer needs to add the function of another sub-card, the customer needs to customize other image signal generators again, so that the cost is high.

Disclosure of Invention

In view of this, the utility model provides a sub-board plug assembly, which can realize the plug-in connection of the sub-board to the digital bottom board in a plug-in manner by the design of the plug-in connection of the sub-board to the preset position on the digital bottom board along the chute, thereby facilitating the disassembly and assembly of the sub-board.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a sub-board plug assembly for use in an image signal generator, comprising: the sliding chute assemblies are in one-to-one correspondence with the sub-boards;

the chute assembly includes: a chute;

the sliding chute is arranged at a preset position on the digital bottom plate of the image signal generator;

the bottom end of the daughter board is detachably inserted into an insertion port at the preset position on the digital bottom plate along the sliding groove.

Preferably, the sliding groove is vertically arranged at a preset position on the digital bottom plate;

the daughter board includes: a PCB board and a mounting board;

the top of the PCB is connected with the bottom surface of the mounting plate;

the bottom end of the PCB is detachably inserted into an insertion port at a preset position of the digital bottom plate along the sliding groove;

at least one mounting end of the mounting plate is mounted on the top of the sliding groove when the PCB is inserted into the insertion port of the digital bottom plate.

Preferably, the sliding groove is provided with a guide groove for guiding the PCB along a direction perpendicular to the digital bottom plate.

Preferably, a matched detachable connecting structure is arranged between the mounting end of the mounting plate and the top of the sliding groove.

Preferably, the detachable connection structure includes:

a through hole formed in the mounting end of the mounting plate;

the internal threaded holes are formed in the top of the sliding groove and are used for being aligned with the through holes;

and a screw connecting the through hole and the internal threaded hole.

Preferably, the mounting end of the mounting plate is provided with an internal thread through hole;

the screw can be installed in the internal thread through hole and butt is in the top of spout to with the screw is screwed in constantly so that the bottom of PCB board can break away from the interface.

Preferably, the chute is a plastic chute;

the top of the plastic chute is embedded with a metal filling part, and the metal filling part is aligned with the internal thread through hole of the mounting end of the mounting plate.

Preferably, the number of the sub-boards is a plurality, the number of the chute assemblies is the same as the number of the sub-boards and corresponds to the plurality of the sub-boards one by one, the plurality of the chute assemblies are distributed in parallel, and each chute assembly comprises a first chute and a second chute;

the first sliding grooves and the second sliding grooves are fixed at two ends of the plug-in port of the digital bottom plate along the length direction in a one-to-one correspondence mode.

Preferably, the method further comprises:

at least one reinforcing plate connected to the outer sides of the plurality of first sliding grooves on the same side;

and/or at least one reinforcing plate connected with the outer sides of the second sliding grooves on the same side.

Preferably, the reinforcing plate is also fixedly connected with the inner wall of the housing of the image signal generator.

An image signal generator comprising: the digital base plate is provided with an inserting interface, and the sub-board assembly is the sub-board inserting and pulling assembly;

the plug interfaces are in one-to-one correspondence with the sub-boards in the sub-board plug assembly;

the daughter board of the daughter board plug assembly is detachably plugged into a corresponding plug interface on the digital bottom board.

According to the technical scheme, the design that the daughter board is used for being detachably inserted into the insertion port at the preset position on the digital bottom plate along the sliding groove can realize that the daughter board is installed at the insertion port of the digital bottom plate in an inserting and pulling mode, so that the daughter board is convenient to assemble and disassemble; in addition, the customer can customize different types of daughter boards based on the requirements of different stages, and does not need to purchase the whole image signal generator repeatedly, so that the cost of the customer can be reduced.

The utility model also provides an image signal generator, which has the corresponding beneficial effects due to the adoption of the daughter board plug assembly, and the description can be referred to in the prior art, and the details are not repeated.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating an installation of a daughter board module on a digital backplane according to an embodiment of the present disclosure;

fig. 2 is a front view showing the structure of an image signal generator according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic structural diagram of a chute according to an embodiment of the present utility model;

FIG. 5 is a front view of a chute according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a chute according to another embodiment of the present utility model;

fig. 7 is a schematic structural diagram of an image signal generator according to an embodiment of the present utility model;

FIG. 8 is a top view of an image signal generator according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of an image signal generator according to another embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a power supply bracket according to an embodiment of the present utility model.

Wherein 100 is a shell, 200 is a digital bottom plate, 300 is a core plate, 410 is a power supply bracket, 411 is a fixed plate, 412 is a boss, 420 is a power supply plate, 510 is a daughter board, 511 is a PCB, 511.1 is a guide slot, 512 is a mounting plate, 512.1 is an internal thread through hole, 520 is a chute, 521 is an internal thread hole, 522 is a guide slot, 523 is a first internal thread blind hole, 524 is a second internal thread blind hole, 525 is a positioning protrusion, 530 is a first reinforcing plate, 540 is a second reinforcing plate, 550 is a screw, and 560 is a metal filling part.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The daughter board plug assembly provided by the embodiment of the utility model is applied to an image signal generator, and as shown in fig. 1, the daughter board plug assembly comprises: a sub-board 510 and a chute assembly in one-to-one correspondence with the sub-board 510;

the chute assembly includes: the chute 520 has a structure as shown in fig. 4 to 6;

the chute 520 is used for being arranged at a preset position on the digital bottom plate 200 of the image signal generator;

the bottom end of the daughter board 510 is used for detachably plugging into a plugging port at a preset position on the digital bottom board 200 along the sliding chute 520.

It should be noted that, the top of the digital chassis 200 is provided with an interface (not shown in the figure) at a preset position for matching with the daughter board 510, and the sliding slot 520 is located at a preset position on the digital chassis 200, i.e. located at one side or two sides of the interface, i.e. the daughter board 510 is used for detachably plugging into the interface at the preset position on the digital chassis 200 along the sliding slot 520, so that the daughter board 510 can be mounted on the interface of the digital chassis 200 along the sliding slot 520 in a pluggable manner, thereby facilitating the disassembly and assembly of the daughter board 510.

In addition, the sliding groove component for guiding is arranged for the plugging of the daughter board 510, so that the guiding plugging of the daughter board 510 can be realized, and the stability and reliability of the plugging of the daughter board 510 can be improved. In addition, the number of the sliding grooves 520 may be one (i.e., a single sliding groove), and is used to be disposed at one side of the insertion port of the digital chassis 200; as shown in fig. 1, the number of the sliding grooves 520 may also be two (i.e., double sliding grooves, see details below), and are configured to be disposed on two sides of the plugging port of the digital chassis 200, i.e., the bottom end of the sub-board 510 is configured to be detachably plugged into the plugging port at a preset position on the digital chassis 200 along the two sliding grooves 520.

According to the technical scheme, the design of the plug-in port of the daughter board, which is detachably plugged in the preset position on the digital bottom plate along the sliding groove, can realize that the daughter board is installed at the plug-in port of the digital bottom plate in a plug-in mode, so that the daughter board is convenient to disassemble and assemble; in addition, the customer can customize different types of daughter boards based on the requirements of different stages, and does not need to purchase the whole image signal generator repeatedly, so that the cost of the customer can be reduced.

Specifically, as shown in fig. 1, the chute 520 is configured to be vertically disposed at a predetermined position on the digital base plate 200;

the sub-board 510 includes: a PCB 511 and a mounting board 512;

the top of the PCB 512 is vertically connected to the bottom surface of the mounting board 512;

the bottom end of the PCB 512 is used for detachably plugging in an plugging port at a preset position of the digital bottom plate 200 along the chute 520;

as shown in fig. 3, at least one mounting end of the mounting plate 512 is mounted (e.g., overlapped) on top of the sliding groove 520 when the PCB 511 is inserted into the insertion port of the digital chassis 200. The design is such that the limiting plugging of the daughter board 510 is realized. In addition, the mounting end of the mounting plate 512 is the end of the mounting plate 512 along the length direction thereof; as shown in fig. 3, when the number of the sliding grooves 520 is two, the two mounting ends of the mounting plate 512 are mounted (lapped) on the top of the two sliding grooves 520 in a one-to-one correspondence when the PCB 511 is plugged into the plugging port of the digital chassis 200.

Further, the sliding groove 520 is provided with a guide groove 522 for guiding the PCB 511 along a direction perpendicular to the digital chassis 200, and the structure thereof can be shown with reference to fig. 4 to 6, ensuring vertical guiding insertion of the PCB 511.

Still further, a mating removable connection is provided between the mounting end of the mounting plate 512 and the top of the chute 520. That is, the mounting end of the mounting plate 512 is detachably connected to the top of the sliding groove 520 when the PCB 511 is inserted into the insertion port of the digital chassis 200. The design is so designed that when the daughter board 510 is plugged into the plugging port, the connection and fixation of the daughter board 510 and the top of the chute assembly can be realized, and the plugging and locking effects of the daughter board 510 are achieved. Of course, when the number of the sliding grooves 520 is two, a matched detachable connection structure is arranged between each mounting end of the mounting plate 512 and the top of the corresponding sliding groove 520.

It should be noted that, the customer may purchase a type of daughter board in the early stage, the image signal generator is further configured with a mounting board 512 for shielding other daughter boards, and the PCB board 511 is not included, it is understood that the mounting board 512 only serves as a housing to prevent dust from entering the image signal generator, the mounting board 512 is fixed on the top of the chute 520 through a detachable connection structure, but the mounting board 512 is not provided with an opening for connecting to the screen to be tested.

Specifically, the detachable connection structure includes:

a through hole opened at the mounting end of the mounting plate 512;

an internal threaded hole 521, which is formed at the top of the chute 520 and is aligned with the through hole, and the structure of which can be seen in fig. 6;

a screw 550 (shown in fig. 1) connecting the through hole with the female screw hole 521.

It should be noted that, through holes are formed at two mounting ends of the mounting board 512, and an internal threaded hole 521 aligned with the corresponding through hole is formed at the top of each sliding slot 520, so that when the PCB 511 is plugged into the socket of the digital chassis 200, the through hole and the internal threaded hole 521 are aligned up and down, and then the through hole and the internal threaded hole 521 are connected by a screw 550, so that the two mounting ends of the mounting board 512 are detachably connected with the tops of the two sliding slots 520 respectively. That is, the detachable connection structure of the scheme adopts a screw connection structure, and has the characteristics of simple structure, convenience in connection and the like.

In this embodiment, as shown in fig. 3, the mounting end of the mounting plate 512 is provided with an internal threaded through hole 512.1;

the screw 550 may be mounted to the internally threaded through hole 512.1 and abuts against the top of the chute, and as the screw 550 is screwed in, the bottom end of the PCB 511 can be separated from the socket.

It should be noted that, when the daughter board 510 is disassembled, the screw 550 is disassembled, and then the screw 550 is screwed into the internal threaded through hole 512.1 to abut against the top of the chute 520, and the tail of the screw 550 is pushed away from the top of the chute 520 along with continuous screwing, so that the PCB 511 can be separated from (pulled out of) the plugging interface. That is, the present solution adopts a screw screwing and jacking manner, so that the daughter board 510 can be pulled out of the socket of the digital bottom board 200, and the present solution has the characteristics of simple structure, convenient operation, etc.

Specifically, the chute 520 is a plastic chute;

as shown in fig. 3, a metal filling portion 560 is embedded in the top of the plastic chute, and the metal filling portion 560 is aligned with the internal threaded through hole 512.1 of the mounting end of the mounting plate 512. That is, considering that the strength of the plastic chute is limited, then the present solution is to embed a metal filling portion 560 (countersunk head arrangement) at the top of the plastic chute, so that the screw 550 can abut against the metal filling portion 560 when screwing in, thereby ensuring the service life of the plastic chute.

Further, as shown in fig. 1, the number of the sub-boards 510 is plural, the number of the chute assemblies is the same as the number of the sub-boards 510 and corresponds to the sub-boards 510 one by one, and the plural chute assemblies are distributed in parallel, however, the number of the plugging ports at the preset position on the digital backplane 200 is also plural and corresponds to the sub-boards 510 one by one, and each chute assembly includes a first chute and a second chute, that is, the number of the chute 520 is two and is the first chute and the second chute respectively;

the first sliding grooves and the second sliding grooves are fixed at two ends of the plug-in port of the digital bottom plate 200 along the length direction in a one-to-one correspondence mode. As shown in fig. 3, the first sliding grooves and the second sliding grooves are vertically fixed on two sides of the plugging port of the digital bottom plate 200 along the length direction thereof in a one-to-one correspondence manner, that is, the first sliding grooves and the second sliding grooves are distributed on two sides of the plugging port of the digital bottom plate 200 along the length direction thereof. In this way, the plurality of sub-boards 510 can be installed in a pluggable manner, thereby greatly facilitating the disassembly and assembly of the sub-board assembly.

Still further, the daughter board plug assembly provided by the embodiment of the present utility model further includes:

at least one reinforcing plate connected to the outer sides of the plurality of first sliding grooves on the same side; wherein, as shown in fig. 2, the reinforcing plate is a first reinforcing plate 530, and the number is one;

and/or at least one reinforcing plate connected with the outer sides of the plurality of second sliding grooves on the same side. As shown in fig. 1, the reinforcing plate is a second reinforcing plate 540, and the number of the reinforcing plates is two in parallel distribution. The design of this scheme is so designed that the structural connection strength of a plurality of sliding grooves 520 located on the same side is improved.

In order to further optimize the above technical solution, the reinforcing plate is also fixedly connected to the inner wall of the housing 100 of the image signal generator. The reinforcing plate connected to the outer sides of the first sliding grooves on the same side is also fixedly connected to the inner wall of the housing 100, as shown in fig. 2, that is, the first reinforcing plate 530 is also fixedly connected to the inner wall of the housing 100. In this way, the overall structural strength of the first sliding grooves on the same side can be improved. In addition, the reinforcing plate and the chute, and the reinforcing plate and the inner wall of the housing 100 may be screwed, such as countersunk screws, which are not described herein.

The embodiment of the utility model also provides an image signal generator, as shown in fig. 7, including: the digital base plate 200 and the sub-board assembly, wherein the digital base plate 200 is provided with an inserting interface, and the sub-board assembly is the sub-board inserting and pulling assembly;

the plug interfaces are in one-to-one correspondence with the sub-boards in the sub-board plug assembly;

the daughter board 510 of the daughter board plug assembly is configured to be detachably plugged into a corresponding plug interface on the digital chassis 200 along the chute 520. Because the above-mentioned daughter board plug subassembly has been adopted to this scheme, therefore it just has corresponding beneficial effect yet, and the specific explanation that can consult is here not repeated.

The present solution is further described below in connection with specific embodiments:

the present utility model provides an image signal generator including: a digital base plate, a daughter board, and a chute member; the daughter board is arranged on the digital bottom board in a pluggable manner; the daughter board comprises a PCB and a mounting plate; the chute component is arranged on the digital bottom plate and is provided with a guide groove matched with the PCB; the mounting plate is provided with a disassembly hole which is provided with internal threads, namely the disassembly hole is an internal thread through hole 512.1; when the daughter board is in the plugging position, the disassembly hole is blocked by the end of the chute member.

The both ends (two installation ends) of mounting panel are provided with the through-hole, and spout part top is provided with the internal thread hole, and when the daughter board is located the grafting position, internal thread hole and through-hole counterpoint distribution, and pass through the through-hole at internal thread hole threaded connection through screw 550, with the mounting panel with spout part fixed when the daughter board is located the grafting position.

A metal filling part is arranged at the position, corresponding to the disassembly hole, of the top of the chute component, and metal, such as a metal rod, is filled in the metal filling part.

The chute member is made of a plastic material.

A plurality of sliding grooves are correspondingly arranged on the same side of the plurality of sub-boards one by one.

A plurality of sliding grooves positioned on the same side are provided with reinforcing plates.

The number of the sub-boards is multiple, and the multiple sub-boards are arranged in parallel.

Still further, the present utility model provides an image signal generator comprising: alternating current-to-direct current (AC-DC) power supply module, power panel, digital bottom plate, chute structure, 6 sub-plate structures, shell (i.e. housing) and fan.

(1) The ACDC power supply is placed on a step (i.e. a boss) of the power supply bracket, and the power supply board is fixed on a fixed board of the power supply bracket;

(2) The digital bottom plate is provided with a core plate and is fixed on the bottom plate of the shell;

(3) 6 clamping grooves (i.e. plug-in connectors) are formed in one side, far away from the core plate, of the digital bottom plate, and the 6 clamping grooves are arranged in parallel;

(4) The digital bottom plate is also provided with 6 chute structures which are in one-to-one correspondence with the 6 clamping grooves, and each sub-plate can be arranged on the clamping groove along the chute structures;

(5) The fans are fixed on the shell, the number of the fans is 3, vent holes are formed in two opposite shells, and air channels are formed on the surface of the whole digital base plate and the surface of the power panel.

Each sub-board includes: the mounting plate and the PCB are fixed;

(1) Sliding grooves are correspondingly formed in two sides of each sub-board; the whole chute is made of plastic materials;

(2) An internal threaded hole 521, a metal filling hole and a port of the guide groove are arranged at the top of the chute;

(3) The mounting plate is provided with: through holes and card ejection holes (i.e., internally threaded through holes 512.1);

(4) The through holes and the internal threaded holes 521 are aligned and distributed, and the daughter board is fixed at the top of the chute through the screws 550;

(5) The board card ejecting holes and the metal filling holes (the metal parts are filled in the board card ejecting holes, such as metal rods) are aligned, screws are detached from the through holes when the daughter board is detached, the screws are screwed into the board card ejecting holes and are propped against the metal filling parts, and the daughter board can be ejected after the screws are continuously screwed;

(6) A positioning protrusion 525 is also arranged at the bottom of each chute, and a first internal thread blind hole 523 and a second internal thread blind hole 524 are arranged at positions relatively far away from the two sides of the positioning protrusion;

(7) The digital bottom plate is provided with positioning holes which are aligned with the positioning protrusions, and a first through hole and a second through hole which are correspondingly distributed with the two internal thread blind holes;

(8) When the sliding chute is installed, the positioning bulge is inserted into the positioning hole on the digital bottom plate, and two screws penetrate through two through holes on the digital bottom plate to enter the internal thread blind hole for fixing;

(9) As shown in fig. 2, a reinforcing plate is fixedly arranged on a plurality of sliding grooves on the same side, the reinforcing plate is fixed with the sliding grooves, and the reinforcing plate is also fixed on the shell through a mounting hole by a screw; and a limiting hole for limiting each chute is formed in the shell;

(10) As shown in fig. 1, a reinforcing plate is installed at the upper half of the plurality of sliding grooves at the same side, and a reinforcing plate is installed at the lower half.

In addition, as shown in fig. 7, the image signal generator provided in the embodiment of the present utility model includes: the digital base plate 200 is arranged on a base plate in the shell 100;

the core board 300 is disposed on the digital base board 200 and is in communication connection therewith;

the power module is arranged on the bottom plate of the shell 100 and is electrically connected with the digital bottom plate 200;

the sub-board modules are disposed on the digital base board 200 along a direction perpendicular to the base board, are in communication connection with the digital base board, and are respectively located at two sides of the core board 300 with the power module.

That is, the daughter board assembly of this scheme adopts the longitudinal distribution setting, and still distributes in the both sides of core board respectively with power module, and this scheme design is so helped increasing image signal generator's height, also is favorable to making its area little moreover, is convenient for integrate the setting.

In this scheme, as shown in fig. 8, the power module and the daughter board module are distributed in parallel, so that the component structure of the image signal generator is distributed more compactly and reasonably, thereby being beneficial to making the occupied area of the image signal generator smaller.

Specifically, as shown in fig. 7, the power supply module includes: a power bracket 410 and a power board 420;

the power bracket 410 is vertically disposed on the bottom plate of the housing 100;

as shown in fig. 7, the power panel 420 is disposed at a side of the power bracket 410 near the digital chassis 200 in a direction perpendicular to the chassis, and is electrically connected to the digital chassis 200;

the top of the power bracket 410 is provided with a placement position for placing a power supply, and is electrically connected with the power board 420. I.e., a place for placing on top of the power bracket 410, and is electrically connected to the power board 420. That is, the components of the power module are also arranged in a longitudinal distribution, thereby helping to make the footprint of the power module smaller.

Further, as shown in fig. 1, the power bracket 410 includes:

a bracket body vertically provided on a bottom plate of the case 100; the top of the bracket body is used as a placement position;

a fixing plate 411 disposed at a side of the bracket body near the digital base 200 in a direction perpendicular to the base, the structure of which can be shown with reference to fig. 10; the power panel 420 is disposed on the fixing plate 411. That is, the power bracket 410 is provided with a fixing plate 411 for mounting and fixing the power panel 420, thereby greatly facilitating the mounting and fixing (screw-coupling) of the power panel 42.

Still further, as shown in fig. 10, the bracket body is a U-shaped bracket body, and is inverted and vertically disposed on the bottom plate of the housing. The support body of this scheme is so designed, and both be convenient for fixed plate 411 set up in its lateral part that is close to digital bottom plate 200, also be convenient for the power be used for placing at its top, still be favorable to the inside heat dissipation of image signal generator.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A sub-board plug assembly for use with an image signal generator, comprising: a sub-board (510) and a chute assembly in one-to-one correspondence with the sub-board (510);

the chute assembly includes: a chute (520);

the sliding groove (520) is arranged at a preset position on the digital bottom plate (200) of the image signal generator;

the bottom end of the daughter board (510) is detachably inserted into an insertion port at the preset position on the digital bottom board (200) along the sliding groove (520).

2. The daughter board plug assembly of claim 1, wherein the chute (520) is vertically disposed at a predetermined location on the digital backplane (200);

the daughter board (510) includes: a PCB (511) and a mounting board (512);

the top of the PCB (512) is connected with the bottom surface of the mounting plate (512);

the bottom end of the PCB (512) is detachably inserted into an insertion port at a preset position of the digital bottom plate (200) along the sliding groove (520);

at least one mounting end of the mounting plate (512) is mounted on the top of the sliding groove (520) when the PCB (511) is inserted into the insertion port of the digital bottom plate (200).

3. The daughter board plug assembly of claim 2, wherein the chute (520) defines a guide slot (522) along a direction perpendicular to the digital chassis (200) for guiding the PCB (511).

4. The daughter board plug assembly of claim 2, wherein a mating removable connection is provided between the mounting end of the mounting plate (512) and the top of the chute (520).

5. The daughter board plug assembly of claim 4, wherein the detachable connection structure comprises:

a through hole provided at the mounting end of the mounting plate (512);

the internal threaded hole (521) is arranged at the top of the chute (520) and is used for being aligned with the through hole;

and a screw (550) connecting the through hole and the female screw hole (521).

6. The daughter board plug assembly of claim 5, wherein the mounting end of the mounting plate (512) is provided with an internally threaded through hole (512.1);

the screw (550) can be mounted on the inner threaded through hole (512.1) and is abutted to the top of the sliding groove (520), and the screw (550) is screwed in continuously so that the bottom end of the PCB (512) can be separated from the plug-in interface.

7. The daughter board plug assembly of claim 6, wherein the chute (520) is a plastic chute;

the top of the plastic chute is embedded with a metal filling part (560), and the metal filling part (560) and the internal thread through hole (512.1) of the mounting end of the mounting plate (512) are in alignment distribution.

8. The daughter board plug assembly of any one of claims 1-7, wherein the number of daughter boards (510) is a plurality, the number of chute assemblies is the same as the number of daughter boards (510) and corresponds one-to-one to the plurality of daughter boards (510), the plurality of chute assemblies are distributed in parallel, and each chute assembly comprises a first chute and a second chute;

the first sliding grooves and the second sliding grooves are fixed at two ends of the plug-in port of the digital bottom plate (200) along the length direction in a one-to-one correspondence mode.

9. The daughter board plug assembly of claim 8, further comprising:

at least one reinforcing plate connected to the outer sides of the plurality of first sliding grooves on the same side;

and/or at least one reinforcing plate connected with the outer sides of the second sliding grooves on the same side.

10. The daughter board plug assembly of claim 9, wherein the stiffener is further fixedly coupled to an inner wall of a housing (100) of the image signal generator.

11. An image signal generator comprising: a digital base plate (200) and a sub-board assembly, wherein the digital base plate (200) is provided with an inserting port, and the sub-board assembly is a sub-board inserting and pulling assembly according to any one of claims 1 to 10;

the plug interfaces are in one-to-one correspondence with the daughter boards (510) in the daughter board plug assembly;

the daughter board (510) of the daughter board plug assembly is detachably plugged into a corresponding plug interface on the digital bottom board (200).