Board card with misplug prevention function
By setting anti-misfit insertion planes and angle scales on guide sleeves and guide pins, combined with interference fits or fasteners, the problem of mold diversification caused by anti-misfit insertion function between boards is solved, multiple anti-misfit insertion solutions are realized, and production costs are reduced.
Patent Information
- Application Number
- CN202520114792.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-16
AI Technical Summary
In existing technologies, the anti-misinsertion function between circuit boards requires different guide seats and guide pins, which leads to the diversification of manufacturing molds and increases costs.
By setting anti-misfit insertion planes and angle scales on guide sleeves and guide pins, combined with interference fits or fasteners, a variety of anti-misfit insertion schemes can be achieved, reducing the number of molds required for guide seats and guide pins.
It achieves the function of preventing incorrect insertion between different boards, reduces the mold requirements for manufacturing guide seats and guide pins, and reduces production costs.
Smart Images
Figure CN223744069U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of communication equipment, and in particular to a board card with error-proof insertion function. BACKGROUND
[0002] The board card structure of communication equipment generally adopts a cylindrical guide structure, a cylindrical guide pin is installed on the backboard side, and a cylindrical guide hole is formed on the guide seat on the single board side. The board card structure of the communication equipment completes the position guidance in the board card process through the cylindrical guide structure, so as to avoid the damage to the connector on the backboard due to the skew and offset of the board card in the insertion process.
[0003] In the related art, after the board card of the communication equipment is developed for many times, the functions and types of the board card may be different. The slot position of the developed board card on the equipment must be limited, otherwise the board card may be damaged or the equipment may be damaged due to the error insertion of the board card into the non-adapted slot. When the plug-in box of the communication equipment has multiple board card slots, some slots are inserted into the first single board, and some slots are inserted into the second single board. The first single board and the second single board have the same width and height. Since the first single board and the second single board have installation position requirements in the plug-in box, the first single board and the second single board must be mutually error-proof.
[0004] The first single board and the second single board need to be mutually error-proof, and the error-proof insertion scheme between the first single board and the second single board needs to be different, and different error-proof insertion schemes need to be made different guide seats and guide pins, which leads to the need to open multiple manufacturing molds for the guide seats and guide pins, and the cost of the board card is increased. SUMMARY
[0005] Embodiments of the present application provide a board card with error-proof insertion function, which can realize multiple error-proof insertion schemes to solve the problem of a large number of mold opening guide pins and guide seats caused by the error-proof insertion function between the board cards.
[0006] Embodiments of the present application provide a board card with error-proof insertion function, which can realize multiple error-proof insertion schemes to solve the problem of a large number of mold opening guide pins and guide seats caused by the error-proof insertion function between the board cards.
[0007] A board card assembly, the board card assembly comprising a backboard and a single board which are connected to each other through a connector and can be inserted and pulled out.
[0008] A guide assembly, the guide assembly comprising a guide pin arranged on the backboard, a guide sleeve matched with the guide pin, and a guide seat arranged on the single board, wherein the guide seat is provided with a through hole for positioning the guide sleeve.
[0009] In some embodiments, at least one error-proof insertion plane is arranged in the inner hole of the guide sleeve, and a guide plane matched with the error-proof insertion plane is arranged on the guide pin.
[0010] In some embodiments, the guide sleeve is embedded in the through hole, and the outer edge of the guide sleeve is in interference fit with the side wall of the through hole.
[0011] In some embodiments, the through hole is a regular polygon hole, and the cross section of the outer edge of the guide sleeve is a regular polygon that is adapted to the through hole.
[0012] In some embodiments, the through hole is a circular hole, the guide seat is provided with an angle scale around the outer periphery of the through hole, and the guide sleeve is provided with a mark line for pointing to the angle scale.
[0013] In some embodiments, the connector comprises a female connector provided on the back plate and a male connector provided on the end of the single board and protruding from the bottom surface of the single board.
[0014] The bottom surface of the guide seat is provided with a protection block that protrudes from the bottom surface of the single board, and the bottom surface of the protection block is lower than the bottom surface of the male connector.
[0015] In some embodiments, the guide seat and the protection block are integrally formed or detachably connected with each other.
[0016] In some embodiments, the protection block is provided with a jack, and the guide seat is provided with a plug that is in clamping fit with the jack.
[0017] In some embodiments, the protection block is an L-shaped block, one end of the L-shaped block is connected perpendicularly to the bottom surface of the guide seat, and the other end extends away from the single board.
[0018] In some embodiments, the guide pin and the guide seat are both provided with a positioning column and a mounting hole, and the back plate and the single board are both provided with a positioning hole and a screw hole.
[0019] The technical scheme provided by the present application has the following beneficial effects:
[0020] The embodiment of the present application provides a board card with error-proof insertion function, which comprises a board card assembly, a guide assembly, a back plate and a single board.
[0021] Since the guide pin installed on the back plate is in butt joint with the guide sleeve, and the guide sleeve is positioned and installed through the through hole on the guide seat, different error-proof insertion schemes can be formed by changing the installation angle of the guide sleeve on the guide seat and the installation angle of the guide pin on the back plate, a large number of guide pins and guide seats can be avoided, and the mutual error-proofing requirement between different single boards can be met. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 The structural schematic diagram of the backboard provided by the embodiments of the present application is shown in the figure.
[0024] Figure 2 The structural schematic diagram of the single board provided by the embodiments of the present application is shown in the figure.
[0025] Figure 3 The structural schematic diagram of the guiding assembly provided by the embodiments of the present application is shown in the figure.
[0026] Figure 4 The structural schematic diagram of the guiding seat provided by the embodiments of the present application is shown in the figure.
[0027] Figure 5 The structural schematic diagram of the guiding sleeve provided by the embodiments of the present application is shown in the figure.
[0028] Figure 6 The structural schematic diagram of the protection block provided by the embodiments of the present application is shown in the figure.
[0029] Figure 7 The structural schematic diagram of the guiding pin provided by the embodiments of the present application is shown in the figure.
[0030] Figure 8 The structural schematic diagram of the single board provided by the embodiments of the present application is shown in the figure.
[0031] Figure 9 The structural schematic diagram of another single board provided by the embodiments of the present application is shown in the figure.
[0032] Figure 10 The schematic diagram of taking the single board provided by the embodiments of the present application is shown in the figure.
[0033] Figure 11 The schematic diagram of horizontally placing the single board provided by the embodiments of the present application is shown in the figure.
[0034] Figure 12 The schematic diagram of the butt joint of the single board and the backboard provided by the embodiments of the present application is shown in the figure.
[0035] Figure 13 The structural schematic diagram of the plug-in box provided by the embodiments of the present application is shown in the figure.
[0036] In the drawings, the components represented by each number are listed as follows:
[0037] 1, backboard; 11, first positioning hole; 12, first screw hole; 2, single board; 21, external port; 3, guide pin; 31, guide head; 32, guide rod; 321, guide plane; 33, mounting seat; 331, first positioning column; 332, first mounting hole; 4, guide sleeve; 41, error-proof insertion plane; 42, guide camber; 5, guide seat; 51, through hole; 52, insertion block; 53, via hole; 54, second positioning column; 55, second mounting hole; 6, angle scale; 7, marking line; 8, female connector; 9, male connector; 10, protection block; 101, vertical section; 102, horizontal section; 103, insertion hole; 200, insertion box. DETAILED DESCRIPTION
[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0039] The embodiments of the present application provide a board card with an error-proof insertion function, which can implement various error-proof insertion schemes to solve the problem of a large number of mold guide pins and guide seats caused by the error-proof insertion function between board cards.
[0040] Referring to Figures 1 to 13 The embodiments of the present application provide a board card with an error-proof insertion function, which can implement various error-proof insertion schemes to solve the problem of a large number of mold guide pins and guide seats caused by the error-proof insertion function between board cards.
[0041] The board card assembly includes a backboard 1 and a single board 2 which are connected to each other through connectors.
[0042] The guide assembly includes a guide pin 3 arranged on the backboard 1 and a guide sleeve 4 matched with the guide pin 3, and the single board 2 is provided with a guide seat 5, and the guide seat 5 is provided with a through hole 51 for positioning the guide sleeve 4.
[0043] The board card with the error-proof insertion function in the embodiments of the present application is provided with the backboard 1 and the single board 2 which are connected to each other through the connectors, the backboard 1 is fixed with the guide pin 3, the single board 2 is fixed with the guide seat 5, the through hole 51 on the guide seat 5 is positioned and mounted with the guide sleeve 4 matched with the guide pin 3, and the installation angle of the guide sleeve 4 can be adjusted as needed before being installed into the through hole 51 to butt joint the guide pins 3 with different installation angles, so that various error-proof insertion schemes can be formed, and a large number of mold guide pins 3 and guide seats 5 can be avoided.
[0044] Exemplarily, the through hole 51 in the embodiment is a regular hexagonal hole, the guide sleeve 4 is a regular hexagonal prism with an inner hole, the inner hole of the guide sleeve 4 is provided with an anti-misinsertion plane 41, the guide sleeve 4 can be positioned and installed into the through hole 51 by embedding, and is fixed by interference fit or fastener connection. Due to the regularity of the regular hexagonal shape, the guide sleeve 4 can be rotated by 0°, 60° or 120° around its own axis before being embedded into the through hole 51, and then is embedded into the through hole 51, so as to adjust the installation angle of the guide pin 3 on the back plate 1, thereby realizing different anti-misinsertion schemes.
[0045] For example, the single board 2 in the embodiment is provided with left and right guide seats 5, and the installation angles of the guide sleeves 4 on the left and right guide seats 5 can be the same or different. The through hole 51 in the embodiment is a regular hexagonal hole, and the guide sleeve 4 is a regular hexagonal prism with an inner hole. Since the guide sleeve 4 on each guide seat 5 has three arrangement directions, the two guide pins 3 can realize nine anti-misinsertion schemes. When different single boards 2 need to be prevented from being misinserted, it is only necessary to ensure that the anti-misinsertion schemes on different single boards 2 are different.
[0046] In some optional embodiments, as shown in Figures 1 to 7 The board with the anti-misinsertion function is provided with at least one anti-misinsertion plane 41 in the inner hole of the guide sleeve 4, and the guide pin 3 is provided with a guide plane 321 matched with the anti-misinsertion plane 41.
[0047] The inner hole of the guide sleeve 4 is symmetrically provided with two anti-misinsertion planes 41, and the two anti-misinsertion planes 41 are symmetrically connected with two guide curved surfaces 42. The guide pin 3 includes an integrally connected guide head 31, a guide rod 32 and a mounting seat 33. The mounting seat 33 is connected to the back plate 1 by a fastener, and the butt joint outer circle of the guide rod 32 is symmetrically provided with two guide planes 321.
[0048] When the guide sleeve 4 and the guide pin 3 are butted, the conical guide head 31 penetrates into the inner hole of the guide sleeve 4, the guide plane 321 on the guide rod 32 contacts the anti-misinsertion plane 41, and the guide curved surface 42 plays a guiding role. The guide rod 32 can only be inserted into the guide sleeve 4 under the premise that the guide plane 321 is aligned with the anti-misinsertion plane 41, and the guide sleeve 4 is fixed on the guide seat 5, so as to have the anti-misinsertion function.
[0049] Exemplarily, in order to improve the stability after butt joint, the guide seat 5 is provided with a through hole 51 at both ends and is positioned and installed with the guide sleeve 4. The through holes 51 at both ends are communicated with each other through the through hole 53 on the guide seat 5, the arrangement directions of the guide sleeves 4 at both ends are consistent, and the guide rod 32 on the guide pin 3 can penetrate through the guide sleeves 4 at both ends at the same time, so as to ensure the stability after butt joint.
[0050] In some optional embodiments, referring to Figure 3 As shown in the figure, the board card with mistake-proof insertion function provided in the embodiments of the present application has a guide sleeve 4 embedded in the through hole 51, and the outer edge of the guide sleeve 4 is in interference fit with the side wall of the through hole 51.
[0051] The guide sleeve 4 of the embodiments of the present application is in interference fit with the side wall of the through hole 51 by means of riveting, and does not need to be fixed with the aid of screws and other fasteners. After the installation arrangement angle of the guide sleeve 4 is determined, the guide sleeve 4 can be pressed into the through hole 51 on the guide seat 5.
[0052] In some optional embodiments, referring to Figures 3 to 5 As shown in the figure, the board card with mistake-proof insertion function provided in the embodiments of the present application has a through hole 51 which is a regular polygon hole, and the cross section of the outer edge of the guide sleeve 4 is a regular polygon which is adapted to the through hole 51.
[0053] The through hole 51 of the embodiments of the present application is a regular polygon hole, and the guide sleeve 4 is a regular polygonal prism which is adapted to the through hole 51 and has an inner hole. Due to the regularity of the regular polygon, the guide sleeve 4 can still be installed into the through hole 51 after rotating a certain angle around its own axis, and the guide sleeve 4 can be fixedly connected by means of interference fit, glue coating or installation of fasteners.
[0054] For example, the through hole 51 is a regular hexagonal hole, and the guide sleeve 4 is a regular hexagonal prism and has an inner hole. Two mistake-proof insertion planes 41 are symmetrically arranged in the inner hole of the guide sleeve 4. Before the guide sleeve 4 is installed into the through hole 51, the guide sleeve 4 can be rotated 0°, 60° or 120° around its own axis, and then positioned and installed into the through hole 51. The installation angle of the guide pin 3 on the back plate 1 is adjusted, so that various mistake-proof insertion schemes can be realized.
[0055] In some optional embodiments, referring to Figures 3 to 5 As shown in the figure, the board card with mistake-proof insertion function provided in the embodiments of the present application has a through hole 51 which is a circular hole, and an angle scale 6 is arranged on the guide seat 5 around the outer periphery of the through hole 51. A mark line 7 is arranged on the guide sleeve 4 for pointing to the angle scale 6.
[0056] The through hole 51 of the embodiments of the present application can be a circular hole, and the corresponding guide sleeve 4 can be a cylinder and have an inner hole. Due to the regularity of the circle, the guide sleeve 4 can still be installed into the through hole 51 after rotating an arbitrary angle around its own axis, and the guide sleeve 4 can be fixedly connected by means of interference fit, glue coating or installation of fasteners.
[0057] In order to facilitate the determination of the installation angle of the guide sleeve 4, the guide seat 5 is provided with an angle scale 6 around the outer periphery of the through hole 51, and the guide sleeve 4 is provided with a mark line 7, and the angle scale 6 and the mark line 7 are formed by opening straight grooves. When the guide sleeve 4 is fixedly installed, the mark line 7 on the guide sleeve 4 points to the angle scale 6 on the guide seat 5, so that the installation angle of the guide sleeve 4 can be determined, and the guide pin 3 can be conveniently installed correspondingly.
[0058] In some optional embodiments, referring to Figures 8 to 11 , the application provides a board card with error-proof insertion function, and the connector of the board card with error-proof insertion function comprises a female connector 8 arranged on a back plate 1 and a male connector 9 arranged at an end of a single board 2 and protruding from the bottom surface of the single board 2, and an external port 21 is arranged at the end of the single board 2 away from the male connector 9.
[0059] The bottom surface of the guide seat 5 is fixedly connected with the protection block 10 protruding from the bottom surface of the single board 2, and the bottom surface of the protection block 10 is lower than the bottom surface of the male connector 9, so that when the single board 2 is placed or picked up, the protection block 10 can avoid the male connector 9 on the single board 2 from contacting the resting surface to a certain extent, that is, the protection block 10 can play a role in preventing collision to a certain extent.
[0060] For example, as Figure 10 , when the single board 2 is flipped to an angle a0, the bottom surface of the protection block 10 forms a contact point O with a horizontal resting surface H, and the male connector 9 and the horizontal resting surface H form a contact point T. That is, when the flipping angle is less than the angle a0, the contact point T is not formed, and the protection block 10 can play a protection role, and after the contact point T is formed, the protection block 10 cannot play a protection role.
[0061] As Figure 11 , the maximum angle a at which the protection block 10 can play a protection role satisfies tan a = B / C, B is the vertical distance from the bottom surface of the male connector 9 to the bottom surface of the protection block 10, and C is the vertical distance from the front end of the protection block 10 to the front end of the male connector 9. It can be known from the relationship that the smaller the value of C is, the larger the inclination angle at which the protection block 10 can play a protection role is, so that the shape of the protection block 10 can be adjusted to minimize the value of C without affecting the butt joint of the male connector 9 to the female connector 8.
[0062] In some optional embodiments, referring to Figures 3 to 6 , the application provides a board card with error-proof insertion function, and the guide seat 5 of the board card with error-proof insertion function is integrally formed with the protection block 10 or is detachably connected with the protection block 10.
[0063] The guide seat 5 of the embodiment of the present application can be integrally formed with the protection block 10, which is convenient for direct processing and forming. Alternatively, the guide seat 5 and the protection block 10 can be detachably connected, and different sizes of the protection block 10 can be installed on the same guide seat 5.
[0064] In some optional embodiments, referring to Figures 8 to 11 The embodiment of the present application provides a board card with error-proof insertion function, and the protection block 10 of the board card with error-proof insertion function is provided with a jack 103, and the guide seat 5 is provided with a plug 52 that is matched with the jack 103.
[0065] The protection block 10 of the embodiment of the present application is provided with the jack 103, and the guide seat 5 is integrally provided with the plug 52. The protection block 10 can be clamped to the plug 52 through the jack 103, so as to realize the detachable connection between the guide seat 5 and the protection block 10.
[0066] In some optional embodiments, referring to Figures 3 to 11 The embodiment of the present application provides a board card with error-proof insertion function, and the protection block 10 of the board card with error-proof insertion function is provided with a jack 103, and the guide seat 5 is provided with a plug 52 that is matched with the jack 103.
[0067] The protection block 10 of the embodiment of the present application is provided with the jack 103, and the guide seat 5 is integrally provided with the plug 52. The protection block 10 can be clamped to the plug 52 through the jack 103, so as to realize the detachable connection between the guide seat 5 and the protection block 10.
[0068] For example, Figure 8 and Figure 9 When the heights A1 and A2 of the protection blocks 10 on the two single boards 2 are different, the vertical distances from the bottom surfaces of the male connectors 9 to the protection blocks 10 on the two single boards 2 are B1 and B2 respectively, and the vertical distances from the front ends of the male connectors 9 to the front ends of the protection blocks 10 on the two single boards 2 are C1 and C2 respectively. Since the protection blocks 10 of different sizes can be replaced, the damage of the male connectors 9 can be solved to a certain extent.
[0069] Therefore, the scheme only needs to increase the die-casting mold of the protection block 10. It should be noted that the damage of the male connector 9 refers to that when the single board 2 is placed or picked up, the male connector 9 will be in contact with the resting surface. For example, when the single board 2 is heavy and is picked up at a high speed, the male connector 9 may be impacted, and the male connector 9 may be scratched or fall off.
[0070] For example, Figure 11, the protection block 10 and the male connector 9 are different in size by C in the horizontal direction, and the protection block 10 and the male connector 9 are different in size by B in the vertical direction. Generally, the protection block 10 is limited by the structure of the backboard 1, and the horizontal size of the protection block 10 does not protrude from the male connector 9. In order to enable the protection block 10 to protect the male connector 9, the bottom surface of the protection block 10 cannot be higher than the bottom surface of the male connector 9, that is, B is positive.
[0071] In some optional embodiments, referring to Figures 1 to 13 As shown in the figure, the embodiment of the present application provides a board card with error-proof insertion function, the guide pin 3 and the guide seat 5 are both provided with positioning columns and mounting holes, the backboard 1 and the single board 2 are both provided with positioning holes and screw holes.
[0072] The guide pin 3 of the embodiment of the present application includes a guide head 31, a guide rod 32 and a mounting seat 33 which are integrally connected, the butt joint outer circle of the guide rod 32 is provided with a guide plane 321, the mounting seat 33 is integrally provided with a first positioning column 331 and a first mounting hole 332, the backboard 1 is provided with a first positioning hole 11 for matching the first positioning column 331, and a first screw hole 12 for butt jointing the first mounting hole 332, the first screw hole 12 is connected with the first mounting hole 332 through a mounting screw, and the backboard 1 can correspondingly install guide pins 3 of different arrangement angles by setting first positioning holes 11 of different mounting positions.
[0073] The bottom surface of the guide seat 5 is integrally provided with a second positioning column 54 and a second mounting hole 55, the single board 2 is provided with a second positioning hole for matching the second positioning column 54, and a second screw hole for butt jointing the second mounting hole 55, the second screw hole is connected with the second mounting hole 55 through a mounting screw, thereby facilitating the fixing and installation of the guide seat 5.
[0074] For example, the guide pin 3, the guide sleeve 4 and the guide seat 5 are all manufactured by die casting process, like Figures 11 to 12 The backboard 1 is arranged in the insertion box 200, and two rows of insertion slots are arranged for inserting two rows of single boards 2, in order to enable two kinds of single boards 2 matched with the two rows of insertion slots to prevent each other from being inserted incorrectly, the installation angle of the guide sleeve 4 in the guide seat 5 on the left single board 2 is different from that of the guide sleeve 4 in the guide seat 5 on the right single board 2, and the corresponding rotation installation angle of the matched guide pin 3 is also different.
[0075] The guide pin 3 in the insertion slot and the guide sleeve 4 of the corresponding rotation installation angle are matched, the rotation installation angle of the guide pin 3 in different insertion slots is different, since the guide pin 3 and the guide sleeve 4 are both non-circular structures, when the single board 2 is inserted into the insertion slot which does not match, the guide pin 3 and the guide sleeve 4 are matched to prevent the connectors from being contacted, thereby avoiding the damage of the connectors or the board card, that is, the left single board 2 cannot be butt jointed with the connector in the right insertion slot, and the right single board 2 cannot be butt jointed with the connector in the left insertion slot.
[0076] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0077] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.
[0078] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.
Claims
1. A board card having a mistake-proofing function, characterized by, The board card assembly comprises a backboard (1) and a single board (2) which are connected to each other through a connector. The guiding assembly comprises a guiding pin (3) arranged on the backboard (1) and a guiding sleeve (4) matched with the guiding pin (3), and the single board (2) is provided with a guiding seat (5) and the guiding seat (5) is provided with a through hole (51) for positioning the guiding sleeve (4).
2. The board card with mistake-proofing function according to claim 1, wherein: At least one mistake-proofing plane (41) is arranged in the inner hole of the guiding sleeve (4), and the guiding pin (3) is provided with a guiding plane (321) matched with the mistake-proofing plane (41).
3. The board card with mistake-proofing function according to claim 1, wherein: The guiding sleeve (4) is embedded in the through hole (51), and the outer edge of the guiding sleeve (4) is in interference fit with the side wall of the through hole (51).
4. The board card with mistake-proofing function according to claim 1, wherein: The through hole (51) is a regular polygon hole, and the cross section of the outer edge of the guiding sleeve (4) is a regular polygon matched with the through hole (51).
5. The board card with mistake-proofing function according to claim 1, wherein: The through hole (51) is a circular hole, the guiding seat (5) is provided with an angle scale (6) surrounding the outer periphery of the through hole (51), and the guiding sleeve (4) is provided with a mark line (7) for pointing to the angle scale (6).
6. The board card with mistake-proofing function according to claim 1, wherein: The connector comprises a female connector (8) arranged on the backboard (1) and a male connector (9) arranged at the end of the single board (2) and protruding from the bottom surface of the single board (2); The bottom surface of the guiding seat (5) is provided with a protection block (10) protruding from the bottom surface of the single board (2), and the bottom surface of the protection block (10) is lower than the bottom surface of the male connector (9).
7. The board card with mistake-proofing function according to claim 6, wherein: The guiding seat (5) and the protection block (10) are integrally formed or detachably connected with each other.
8. The board card with mistake-proofing function according to claim 6, wherein: The protection block (10) is provided with a insertion hole (103), and the guiding seat (5) is provided with an insertion block (52) matched with the insertion hole (103).
9. The board card with mistake-proofing function according to claim 6, wherein: The protection block (10) is an L-shaped block, one end of the L-shaped block is perpendicularly connected with the bottom surface of the guiding seat (5) and the other end extends away from the single board (2).
10. The board card with mistake-proofing function according to claim 1, wherein: The guiding pin (3) and the guiding seat (5) are both provided with a positioning column and a mounting hole, and the backboard (1) and the single board (2) are both provided with a positioning hole and a screw hole.