Circuit board installation jig

Abstract

The utility model discloses a circuit board installation tool. The circuit board mounting jig comprises a bottom plate, a limiting assembly, a cover plate assembly and a guide mounting mechanism, the limiting assembly is arranged on the bottom plate and comprises a conduction part and a locking and pressing part connected with the conduction part, a limiting area is formed on the conduction part, and the locking and pressing part is used for limiting and pressing a product into the limiting area; the cover plate assembly is connected with the limiting assembly and is used for opening and closing the limiting area; the guiding mechanism is arranged on the cover plate assembly, a guiding channel is formed in the guiding mechanism, and the guiding channel is suitable for being oppositely communicated with a mounting hole in a product located in the limiting area. According to the technical scheme provided by the utility model, the mounting position of the part is more accurate when the part is locked with the circuit board, and the hand of a worker does not touch the circuit board in the locking process, so that the circuit board can be better protected from being damaged, and the yield of finished products is higher while the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing fixtures, and particularly relates to a circuit board mounting fixture. Background Art

[0002] Various electronic components are installed on the bare circuit board to achieve different functions. The traditional part installation method is to manually pick a single part, align it, and then fix and lock it with screws. Manually pick parts from the plastic carrier and place them on the part limiting fixture. Manually pick up the PCB board, align the through holes of the board and the threaded holes of the parts, and then fix and lock one of the parts. Each part needs to be picked up and placed multiple times, and then the screws are tightened one by one.

[0003] The efficiency of manual operation is low, far from meeting the growth of market demand. Moreover, the perpendicularity of the assembled parts cannot be guaranteed, resulting in a high defect rate. There are deviations when placing parts, resulting in damage to the components near the parts. Personnel touch the PCB board, resulting in an increase in the short-circuit defect rate of the board. Summary of the Utility Model

[0004] In order to solve the above technical problems, the main purpose of the utility model is to provide a circuit board mounting fixture, aiming to solve the problems of low operation efficiency and various assembly defects easily caused by the traditional manual assembly method of circuit boards, which affect the yield of finished products.

[0005] In order to achieve the above purpose, a circuit board mounting fixture proposed by the utility model includes:

[0006] A bottom plate;

[0007] A limiting component, arranged on the bottom plate, including a conduction part and a locking and pressing part connected to the conduction part. A limiting area is formed on the conduction part, and the locking and pressing part is used to limit and press the product in the limiting area;

[0008] A cover plate component, connected to the limiting component and opening and closing the limiting area;

[0009] A guiding mechanism, arranged on the cover plate component and forming a guiding channel, which is adapted to be relatively communicated with the mounting holes on the product located in the limiting area.

[0010] Optionally, one side of the cover plate component is hinged to the limiting component, and an opening cover protrusion is arranged on the other side of the cover plate component opposite to the hinged position.

[0011] Optionally, the guiding mechanism includes a plurality of guiding blocks, the cover plate component includes a cover pressing plate, a plurality of guiding holes are arranged on the cover pressing plate, and the plurality of guiding blocks are respectively arranged in the plurality of guiding holes one by one. A guiding hole is arranged on each guiding block to form the guiding channel.

[0012] Optionally, the limiting component further includes a limiting adjustment structure, which is connected to the conduction component. The conduction component has a moving stroke along the transverse direction of the bottom plate. A transmission part is provided on the conduction component, and a cooperation part that is in contact and cooperation with the transmission part is provided on the locking and pressing component. The limiting adjustment structure drives the conduction component to move along the transverse direction of the bottom plate, and under the cooperation of the transmission part and the cooperation part, the locking and pressing component is driven to move along the longitudinal direction of the bottom plate.

[0013] Optionally, the limiting adjustment structure includes a mounting seat provided on the bottom plate, a driving screw rotatably provided on the mounting seat, and a handle part provided at one end of the driving screw. The driving screw extends along the transverse direction of the bottom plate, and the handle part is provided at one end of the driving screw along its transverse direction and can be exposed from the bottom plate;

[0014] An adjusting nut is provided on the conduction component, and the adjusting nut is screwed with the driving screw. The driving screw rotates under the action of an external force, driving the adjusting nut to move along the driving screw, driving the conduction component to move together, and driving the locking and pressing component to move along the longitudinal direction of the bottom plate.

[0015] Optionally, the conduction component includes:

[0016] A first driving plate, which is fixed on the bottom plate and forms a sandwich layer with the bottom plate. The limiting area is formed at the top of the first driving plate;

[0017] A second driving plate, which is movably arranged in the sandwich layer and is screwed with the driving screw;

[0018] The transmission part includes a guiding surface provided on the second driving plate, and at least part of the guiding surface is inclined along the transverse direction of the bottom plate.

[0019] Optionally, the locking and pressing component includes:

[0020] A sliding seat, which is slidably arranged on the bottom plate along the longitudinal direction of the bottom plate. The cooperation part includes a rolling wheel rotatably arranged on one side of the sliding seat, and the rolling wheel abuts against the guiding surface;

[0021] A locking block, which is arranged on the sliding seat and is located on one side of the limiting area along the longitudinal direction of the bottom plate;

[0022] The driving screw rotates relative to the mounting seat, driving the first driving plate to move along the transverse direction of the bottom plate. Under the cooperation of the rolling wheel and the guiding surface, the locking block is driven to approach or move away from the limiting area.

[0023] Optionally, one of the bottom plate and the sliding seat is provided with a slide rail, and the other is provided with a slider. The slide rail is arranged along the longitudinal direction of the bottom plate, and the slider is slidably arranged on the slide rail.

[0024] Optionally, there are two sets of the locking and pressing components. The two sets of the locking and pressing components are arranged oppositely along the longitudinal direction of the bottom plate, and the locking blocks of the two sets of the locking and pressing components move relatively.

[0025] Optionally, each of the locking and pressing components includes a plurality of the locking blocks, and each of the locking blocks is provided with a hollow area;

[0026] A plurality of receiving grooves are provided on the first driving plate. The plurality of receiving grooves are arranged corresponding to the hollow areas of the plurality of locking blocks and are arranged corresponding to the respective guiding channels.

[0027] The technical solution provided by the present utility model has the following beneficial effects:

[0028] The circuit board mounting jig provided by the present utility model includes a bottom plate, a limiting component, a cover plate component and a guiding mechanism. The circuit board can be positioned through the limiting component, and the cover plate component can be covered above the placed circuit board. Thus, a guiding channel can be formed through the guiding mechanism, so that connecting pieces such as screws can quickly fall into the mounting holes on the circuit board through the guiding channel. The alignment and installation of the screws are faster, thereby improving the locking efficiency. Moreover, the circuit board can be limited in the horizontal direction through the limiting area, and the circuit board can be limited in the up and down direction through the locking and pressing components, ensuring that the circuit board is restricted in all directions within the limiting area, so as to be fixedly reliable. Therefore, when locking the parts and the circuit board, the installation positions of the parts are more accurate, and the human hand will not touch the circuit board during the locking process, which can better protect the circuit board from being damaged, improve the operation efficiency, and make the yield rate of the finished product higher. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0030] Figure 1 It is a schematic structural diagram of an embodiment of a circuit board mounting jig provided by the present utility model;

[0031] Figure 2 For Figure 1 an exploded structural diagram of the circuit board mounting jig described above;

[0032] Figure 3 Another exploded structural schematic diagram of the circuit board mounting jig described in Figure 1 ;

[0033] Figure 4 Another structural schematic diagram of the circuit board mounting jig (excluding the cover plate assembly) described in Figure 1 ;

[0034] Figure 5 An exploded structural schematic diagram of the circuit board mounting jig (excluding the cover plate assembly) described in Figure 4 ;

[0035] Figure 6 Another partial structural schematic diagram of the limiting component described in Figure 4 ;

[0036] Explanation of the reference numerals in the drawings:

[0037] 100 - Circuit board mounting jig; 1 - Bottom plate; 2 - Limiting component; 21 - Limiting adjustment structure; 211 - Mounting seat; 212 - Handle part; 213 - Driving screw; 22 - Conducting component; 221 - First driving plate; 2211 - Sliding groove; 2212 - Limiting boss; 2213 - Accommodating groove; 222 - Second driving plate; 2221 - Guiding surface; 23 - Locking and pressing component; 231 - Sliding seat; 232 - Locking block; 233 - Rolling wheel; 234 - Elastic telescopic part; 3 - Cover plate assembly; 31 - Cover pressing plate; 32 - Opening cover protrusion; 4 - Guiding and mounting mechanism; 41 - Guiding and mounting block; 42 - Guiding and mounting hole.

[0038] For the realization of the purpose, functional characteristics and excellent effects of the present utility model, further explanations will be given below in combination with specific embodiments and the drawings. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in combination with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that if there are directional indications involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The present utility model provides a circuit board installation jig 100. Specifically, please refer to Figure 1 and Figure 2 , in this embodiment, the circuit board installation jig 100 includes a bottom plate 1, a limiting component 2, a cover plate component 3, and a guiding and installing mechanism 4; the limiting component 2 is arranged on the bottom plate 1 and includes a conducting component 22 and a locking and pressing component 23 connected to the conducting component 22. A limiting area is formed on the conducting component 22, and the locking and pressing component 23 is used to limit and press the product in the limiting area; the cover plate component 3 is connected to the limiting component 2 and opens and closes the limiting area; the guiding and installing mechanism 4 is arranged on the cover plate component 3 and forms a guiding channel, and the guiding channel is adapted to be relatively communicated with the installation holes on the product located in the limiting area.

[0043] In this embodiment, the circuit board can be positioned through the limiting component 2, and the cover plate component 3 can be covered above the placed circuit board. Thus, a guiding channel can be formed through the guiding and installing mechanism 4, enabling connecting pieces such as screws to quickly fall into the installation holes on the circuit board through the guiding channel. The alignment and installation of the screws are faster, thereby improving the locking efficiency; moreover, the circuit board can be limited in the horizontal direction through the limiting area, and the circuit board can be limited in the up and down direction through the locking and pressing component 23, ensuring that the circuit board is restricted in all directions within the limiting area, so it is fixed reliably. Therefore, when locking the parts to the circuit board, the installation positions of the parts are more accurate, and during the locking process, the human hand will not touch the circuit board, which can better protect the circuit board from being damaged. While improving the operation efficiency, the yield rate of the finished product is higher.

[0044] Among them, as Figure 1As shown, one side of the cover plate assembly 3 is hinged to the limit assembly 2, and an opening cover protrusion 32 is provided on the other side of the cover plate assembly 3 opposite to its hinge position. This enables the cover plate assembly 3 to be conveniently opened and closed. When a circuit board is placed in the limit area, when the cover plate assembly 3 is in the closed state, the guiding channels on the guiding mechanism 4 can be opposite to the mounting holes on the product. Connecting parts (such as screws, bolts, etc.) can be directly placed into the corresponding guiding channels, so that the screws can quickly enter the connection between the parts and the circuit board, and the parts and the circuit board can be locked by directly performing the locking operation of the screws. The operation is more convenient and the locking operation is also faster. After the locking is completed, the cover plate assembly 3 can be conveniently opened by manually operating the opening cover protrusion 32 to take out the assembled circuit board product.

[0045] Further, in combination with Figure 2 and Figure 3 As shown, the guiding mechanism 4 includes a plurality of guiding blocks 41. The cover plate assembly 3 includes a cover pressing plate 31, and the cover pressing plate 31 is arranged in a substantially flat plate shape to completely cover the limit area. A plurality of guiding holes 42 are provided on the cover pressing plate 31, and a plurality of the guiding blocks 41 are respectively arranged in a one-to-one correspondence in a plurality of the guiding holes 42. Each of the guiding blocks 41 is provided with a guiding hole to form the guiding channel. When dealing with different products, the guiding blocks 41 can be replaced, so that the circuit board mounting fixture 100 can better adapt to the mounting requirements of different products. Moreover, when one of the guiding blocks 41 is damaged, it is easy to replace.

[0046] There are many ways to position the circuit board. Preferably, in combination with Figure 2 and Figure 4 As shown, the limit assembly 2 further includes a limit adjustment structure 21. The limit adjustment structure 21 is connected to the conduction component 22. The conduction component 22 has a moving stroke along the transverse direction of the bottom plate 1. A transmission part is provided on the conduction component 22, and a matching part that is in contact and cooperation with the transmission part is provided on the locking and pressing component 23. The limit adjustment structure 21 drives the conduction component 22 to move along the transverse direction of the bottom plate 1. Under the combined action of the transmission part and the matching part, the locking and pressing component 23 is driven to move along the longitudinal direction of the bottom plate 1. Through the limit adjustment structure 21, the locking and pressing component 23 can have a locking state of pressing on the limit area and an unlocking state of being away from the limit area, so that the fixing and unlocking operations of the circuit board are more convenient.

[0047] Among them, in combination with Figure 2 and Figure 4As shown, the limit adjustment structure 21 includes a mounting seat 211 provided on the base plate 1, a driving screw 213 rotatably provided on the mounting seat 211, and a handle member 212 provided at one end of the driving screw 213. The driving screw 213 extends along the transverse direction of the base plate 1. The handle member 212 is provided at one end of the driving screw 213 along its transverse direction and can be exposed from the base plate 1. The user can manually operate the handle member 212 to rotate the driving screw 213 and drive the driving screw 213 to rotate. Moreover, an adjusting nut is provided on the conduction component 22. The adjusting nut is screwed with the driving screw 213. When the driving screw 213 rotates under the action of an external force, the adjusting nut is driven to move along the driving screw 213, driving the conduction component 22 to move together and driving the locking and pressing component 23 to move along the longitudinal direction of the base plate 1. By rotating the driving screw 213, the transverse movement of the conduction component 22 can be realized, and the longitudinal movement of the locking and pressing component 23 can be driven. When the length of the circuit board is relatively long, the length direction of the circuit board extends along the transverse direction of the base plate 1. The circuit board mounting jig 100 is relatively long in the transverse direction but can be relatively short in the longitudinal direction, so that the overall volume can be smaller.

[0048] There are many setting forms for the transmission part and the matching part. Preferably, in combination with Figure 5 and Figure 6 As shown, one of the transmission part and the matching part is set as a rolling wheel 233, and the other is set as a guiding surface 2221. The guiding surface 2221 is at least partially inclined along the transverse direction of the base plate 1. When the conduction component 22 moves along the transverse direction of the base plate 1, the rolling wheel 233 can roll along the guiding surface 2221, so that the locking and pressing component 23 generates a displacement along the longitudinal direction of the base plate 1, so that the locking and pressing component 23 can approach or move away from the product, realizing the positioning or unlocking of the product. Moreover, by the way of the rolling wheel 233 contacting the guiding surface 2221, a line-plane contact is formed, which can make the contact friction force between the rolling wheel 233 and the guiding surface 2221 smaller, so the transmission efficiency is higher.

[0049] Specifically, the conduction component 22 includes a first driving plate 221 and a second driving plate 222. The first driving plate 221 is located above the second driving plate 222. The first driving plate 221 is fixed on the bottom plate 1, and a sandwich layer is formed between the first driving plate 221 and the bottom plate 1. A limiting area is formed at the top end of the first driving plate 221, and the limiting area is suitable for accommodating the product. The second driving plate 222 is movably arranged in the sandwich layer and is screwed to the driving screw 213. The transmission part includes a guiding surface 2221 arranged on the second driving plate 222, and at least part of the guiding surface 2221 is inclined along the transverse direction of the bottom plate 1. The rolling wheel 233 is arranged on the locking and pressing component 23. The cooperation part of the rolling wheel 233 and the guiding surface 2221 is covered in the sandwich layer by the first driving plate 221 and the bottom plate 1, which can better protect and prevent impurities from entering the cooperation part of the rolling wheel 233 and the guiding surface 2221 and affecting the cooperation effect.

[0050] Moreover, as Figure 4 shown, a plurality of limiting bosses 2212 are arranged on the top of the first driving plate 221, and the plurality of limiting bosses 2212 are suitable for positioning and cooperating with a plurality of positioning holes on the product. The product can be limited in the horizontal direction by the plurality of limiting bosses 2212, and then the locking and pressing component 23 is pressed against the product in the up and down direction to completely limit the product. Among them, the plurality of limiting bosses 2212 can be detachably arranged on the first driving plate 221 to change the positions and quantities of the plurality of limiting bosses 2212 to better adapt to the positioning requirements of different products.

[0051] Preferably, as shown in Figure 5 and Figure 6 shown, the guiding surface 2221 has a first plane extending along the transverse direction of the bottom plate 1, and a second plane and a wedge surface respectively located at both ends of the first plane. The second plane extends along the longitudinal direction of the bottom plate 1, and the wedge surface is inclined along the longitudinal direction of the bottom plate 1. Among them, when the rolling wheel 233 is in contact with the first plane, the locking and pressing component 23 is in the first position. When the second driving plate 222 moves along the transverse direction of the bottom plate 1 under the action of the driving screw 213, the wedge surface is in contact with the rolling wheel 233, so as to abut against the locking and pressing component 23 and make the locking and pressing component 23 move in a direction away from the limiting area, thereby unlocking the product. Moreover, the second plane can limit the locking and pressing component 23 when the locking and pressing component 23 is in the first position to prevent the locking and pressing component 23 from shaking.

[0052] Specifically, the locking and pressing member 23 includes a sliding seat 231 and a locking block 232. The sliding seat 231 is slidably disposed on the bottom plate 1 along the longitudinal direction of the bottom plate 1, and the rolling wheel 233 is disposed on the sliding seat 231. The locking block 232 is disposed on the sliding seat 231 and is located on one side of the limiting area along the longitudinal direction of the bottom plate 1. The matching portion includes a rolling wheel 233 rotatably disposed on one side of the sliding seat 231, and the rolling wheel 233 abuts against the guiding surface 2221. The driving screw 213 rotates relative to the mounting seat 211, driving the first driving plate 221 to move transversely along the bottom plate 1. Under the combined action of the rolling wheel 233 and the guiding surface 2221, the locking block 232 is driven to approach or move away from the limiting area. When the rolling wheel 233 abuts against the first plane, the sliding seat 231 is at the first position. At this time, the locking block 232 is at a position close to the limiting area, and the locking block 232 presses against the product to fix the product. After the product is assembled, the driving screw 213 can be adjusted so that the rolling wheel 233 can abut against the wedge surface to push the sliding seat 231 to move away from the second driving plate 222, driving the locking block 232 to move away from the limiting area to unlock the product.

[0053] Wherein, as shown in combination with Figure 3 and Figure 4 A sliding groove 2211 is formed on the first driving plate 221, and the sliding groove 2211 extends along the longitudinal direction of the bottom plate 1. The bottom of the sliding seat 231 is slidably connected to the bottom plate 1, and the sliding seat 231 has two sliding arms extending into the sliding groove 2211. The locking and pressing member 23 further includes two elastic telescopic members 234, and each elastic telescopic member 234 is respectively connected to the first driving plate 221 and the corresponding sliding arm. A slide rail is further disposed on the bottom plate 1, and a slider is disposed at the bottom of the sliding seat 231. The slide rail extends along the longitudinal direction of the bottom plate 1, and the slider is slidably disposed on the slide rail, making the sliding seat 231 more stable and less likely to shake during movement. Moreover, by means of the two sliding arms lapping in the sliding groove 2211, when unlocking the product, the locking block 232 is at a position away from the limiting area, and the elastic telescopic member 234 is in a compressed state. After the handle member 212 is unlocked, under the action of the elastic restoring force of the elastic telescopic member 234, the locking block 232 can be pushed to move, and further the sliding seat 231 can move along the bottom plate 1 to automatically return to the first position, in the position of pressing the product.

[0054] In one embodiment, there are two sets of the locking and pressing components 23. The two sets of the locking and pressing components 23 are arranged oppositely along the longitudinal direction of the bottom plate 1, and the locking blocks 232 of the two sets of the locking and pressing components 23 move relatively. When adjusting the handle member 212, the locking blocks 232 of the two sets of the locking and pressing components 23 can be driven to approach or move away from each other, so as to press on the circuit board simultaneously or unlock the circuit board simultaneously.

[0055] Preferably, as Figure 3 shown, there are multiple sets of the locking and pressing components 23. Among them, two sets of the locking and pressing components 23 arranged oppositely along the longitudinal direction of the bottom plate 1 are taken as a group, and multiple groups of the locking and pressing components 23 are arranged at intervals along the transverse direction of the bottom plate 1. Through the multiple groups of the locking and pressing components 23, interval pressing can be formed along the length direction of the product, and the fixation of the product is more reliable.

[0056] Moreover, multiple groups of the locking and pressing components 23 are all connected to the same conduction component 22. Among them, multiple guiding surfaces 2221 can be arranged on the second driving plate 222, and the multiple guiding surfaces 2221 are arranged in one-to-one correspondence with multiple sets of the locking and pressing components 23. Thus, by adjusting the driving screw 213, multiple sets of the locking and pressing components 23 can be driven to move synchronously, the operation is more convenient, and the positioning effect on the product is better.

[0057] In one embodiment, among multiple sets of the locking and pressing components 23, the shapes of multiple locking and pressing components 23 can be slightly different. Specifically, the sizes and shapes of the locking and pressing components 23 can be replaced according to the size and shape of the product, so as to better adapt to the positioning requirements of different products.

[0058] Among them, each locking and pressing component 23 can include multiple locking blocks 232, and each locking block 232 is provided with a hollow area; multiple receiving grooves 2213 are arranged on the first driving plate 221, and the multiple receiving grooves 2213 are arranged corresponding to the hollow areas of the multiple locking blocks 232 and are arranged corresponding to the respective guiding channels. When in use, multiple parts can be placed in the corresponding multiple receiving grooves 2213 first, and then the circuit board is placed in the limiting area. The circuit board is preliminarily positioned by the multiple limiting bosses 2212, and then the handle member 212 is adjusted to drive the multiple locking blocks 232 to press on the periphery of the circuit board to completely fix the circuit board. At this time, the mounting holes on the circuit board are opposite to the mating holes on each part. Then the cover pressing plate 31 is covered, so that the multiple guiding holes 42 are opposite to the multiple mounting holes. Then multiple screws are placed in the corresponding respective guiding holes 42 for screw tightening. After all the screws are locked, the cover pressing plate 31 is opened, and the assembled circuit board finished product is taken out to complete the assembly of one circuit board.

[0059] The above are only the preferred embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structures made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A circuit board installation jig, characterized in that: include: Base plate; A limit assembly is arranged on the bottom plate, comprising a conducting component and a locking component connected to the conducting component, wherein a limit area is formed on the conducting component, and the locking component is used to limit and press the product in the limit area; A cover plate assembly, connected to the limiting assembly and opening and closing the limiting area; The guide mechanism is arranged on the cover plate assembly and is formed with a guide channel, and the guide channel is suitable for being relatively connected with the installation hole on the product located in the limiting area.

2. The circuit board mounting jig according to claim 1, characterized in that: One side of the cover assembly is hinged to the limiting assembly, and the other side of the cover assembly opposite to the hinge is provided with a cover opening protrusion.

3. The circuit board mounting fixture according to claim 1, characterized in that: The guide mechanism includes a plurality of guide blocks, the cover plate assembly includes a cover pressure plate, the cover pressure plate is provided with a plurality of guide holes, the plurality of guide blocks are arranged in the plurality of guide holes in a one-to-one correspondence, and each of the guide blocks is provided with a guide hole to form the guide channel.

4. The circuit board mounting jig according to claim 1, wherein: The limit assembly also includes a limit adjustment structure, which is connected to the conduction component, the conduction component has a movable stroke along the lateral direction of the base plate, the conduction component is provided with a transmission part, and the locking component is provided with a matching part that contacts and cooperates with the transmission part. The limit adjustment structure drives the conduction component to move laterally along the base plate, and drives the locking component to move longitudinally along the base plate under the cooperation of the transmission part and the matching part.

5. The circuit board mounting jig according to claim 4, characterized in that: The limit adjustment structure includes a mounting seat arranged on the bottom plate, a driving screw rotatably arranged on the mounting seat, and a handle member arranged at one end of the driving screw, wherein the driving screw is arranged to extend in the transverse direction of the bottom plate, and the handle member is arranged at one end of the driving screw in the transverse direction thereof and can be exposed from the bottom plate; The conduction component is provided with an adjusting nut, and the adjusting nut is threadedly connected to the driving screw. The driving screw rotates under the action of external force, driving the adjusting nut to move along the driving screw, driving the conduction component to move together, and driving the locking component to move along the longitudinal direction of the base plate.

6. The circuit board mounting jig according to claim 5, characterized in that: The conductive component comprises: A first driving plate is fixed on the bottom plate and a sandwich layer is formed between the first driving plate and the bottom plate, and the limiting area is formed at the top of the first driving plate; A second driving plate, movably disposed in the interlayer and threadedly connected to the driving screw; The transmission part comprises a guide surface arranged on the second driving plate, and at least a part of the guide surface is arranged to be inclined along the transverse direction of the bottom plate.

7. The circuit board mounting jig according to claim 6, wherein: The locking component comprises: A sliding seat is slidably disposed on the bottom plate along the longitudinal direction of the bottom plate, wherein the matching portion comprises a rolling wheel rotatably disposed on one side of the sliding seat, and the rolling wheel abuts against the guide surface; A locking block, disposed on the sliding seat and located on one side of the limiting area along the longitudinal direction of the bottom plate; The driving screw rotates relative to the mounting seat to drive the first driving plate to move laterally along the bottom plate, and under the cooperation of the rolling wheel and the guide surface, the locking block is driven to approach or move away from the limiting area.

8. The circuit board mounting jig according to claim 7, wherein: One of the bottom plate and the sliding seat is provided with a sliding rail, and the other is provided with a sliding block. The sliding rail is extended along the longitudinal direction of the bottom plate, and the sliding block is slidably arranged on the sliding rail.

9. The circuit board mounting jig according to claim 7, characterized in that: The locking components are provided with two sets, the two sets of locking components are arranged opposite to each other along the longitudinal direction of the bottom plate, and the locking blocks of the two sets of locking components move relative to each other.

10. The circuit board mounting jig according to claim 7, wherein: Each of the locking components comprises a plurality of locking blocks, and each of the locking blocks is provided with a hollow area; The first driving plate is provided with a plurality of accommodating grooves, and the plurality of accommodating grooves are arranged corresponding to the hollowed-out areas of the plurality of locking blocks and are arranged corresponding to the guide channels.

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