A connector with an error-proof insertion structure and an error-proof key position installation tool

Abstract

This invention belongs to the field of connector technology, specifically relating to a connector with an anti-misfit structure and an anti-misfit key installation tool. The connector includes a connector housing with an anti-misfit groove, which includes a pre-installation groove and a fixing groove. The anti-misfit key includes several identification guide pins I, each with an identification post I at its front end, an anti-misfit mating surface I on its side, and a force-bearing surface at its root. The installation tool includes a tool housing with an identification guide pin II detachably mounted at one end. The identification guide pin II corresponds one-to-one with the identification guide pin I in the anti-misfit key. The front end of the identification guide pin II is an identification post II, the front end face of which rests against the force-bearing surface of the identification guide pin I, and the side of the identification post II has an anti-misfit mating surface II for matching with the anti-misfit mating surface I. This invention has a simple structure, few parts, small space occupation, and simple installation process, facilitating the installation and adjustment of the anti-misfit key.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, specifically relating to a connector with an anti-misfit structure and an anti-misfit key mounting tool. Background Technology

[0002] As electronic devices evolve towards modularity and high-density integration, chassis products often employ designs that involve multiple modules and boards working together. To ensure stable electrical connections and signal transmission between modules / boards and the chassis, multi-slot chassis frequently use connectors of the same model. Because connectors of the same model are identical in shape, interface, and installation method, mis-insertion of adjacent slot boards is highly likely. To prevent mis-insertion of modules with the same connector model, connectors need to be designed with anti-mis-insertion structures. Common anti-mis-insertion structures include identification keys, pressure plates, and screws on the connector housing, such as... Figure 7 , Figure 8 As shown, the identification key is installed into the keyway on the housing, and the identification key is fixed by tightening the pressure plate with screws. The square key at the bottom of the identification key cooperates with the keyway to restrict the orientation of the identification key. Different anti-misoperation key positions of the identification key within the keyway can be adjusted. Multiple identification keys can be set on a large number of connectors of the same model, such as... Figure 7 , Figure 8 As shown, a connector can use three identification keys. By adjusting and combining the three identification keys, various key combinations can be formed, which can realize the anti-misfit function of a large number of connectors of the same model.

[0003] The disadvantages of this anti-misinsertion structure are: ① It has many parts and takes up a lot of space; ② It requires applying glue to prevent the identification key from loosening and tightening screws to fix the identification key, making the installation cumbersome; ③ Once installed, if an installation error occurs, it is cumbersome for the user to adjust the anti-misinsertion key position.

[0004] Therefore, to address the aforementioned shortcomings, the following issues need to be resolved: (1) How to fix and install the error-proof key on the connector while reducing the types of parts and compressing the space occupied by the error-proof structure; (2) The identification key in the error-proof structure adopts a single-sided trapezoidal column structure, which is prone to tipping and tilting during the installation of the keyway in the housing. How to avoid this phenomenon during installation? In addition, the error-proof key is prone to installation errors, requiring disassembly and reinstallation, and the adjustment and installation process is quite cumbersome. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a connector with an anti-misfit insertion structure and an anti-misfit key installation tool, which reduces the number of parts and the space occupied, and facilitates the installation and adjustment of the keys.

[0006] The objective of this invention is achieved through the following technical solution. A connector with an anti-misfit insertion structure, according to this invention, includes a connector housing. The connector housing has an anti-misfit groove for installing anti-misfit keys. The anti-misfit groove includes a pre-installation groove near the opening and clearance-fitting the anti-misfit key, and a fixing groove near the bottom and forcibly fitting the anti-misfit key. The anti-misfit key includes several identification guide pins I. The rear end of the identification guide pin I is installed in the anti-misfit groove, and the front end has an identification post I extending out of the anti-misfit groove. The side of the identification post I has an anti-misfit mating surface I for verifying the orientation of the identification guide pin I. The root of the identification post I has a force-bearing surface for pressing the identification guide pin I from the pre-installation groove into the fixing groove.

[0007] Compared with the prior art, the advantages of the present invention are: The anti-misfit key uses only a few parts, such as the identification guide pin I, to achieve the function of the anti-misfit structure. The anti-misfit key and the anti-misfit groove of the connector housing are first clearance fit, and the position is confirmed before forced installation. This avoids damage caused by disassembly and reinstallation after forced installation error, and avoids cumbersome process. The structure of this invention is simple, with few parts and small space occupation. Applying force to the force-bearing surface at the root of the identification guide pin I matches the error-proof mating surface I of the identification post I in the identification guide pin I. This prevents the error-proof key from tipping over or tilting during the process of installing the error-proof key into the error-proof groove on the connector housing, thus facilitating the installation and adjustment of the error-proof key.

[0008] Furthermore, several limiting sides are evenly distributed circumferentially at the rear end of the identification guide pin I. The limiting sides cooperate with the anti-rotation groove to limit the orientation of the identification guide pin I.

[0009] Compared with the prior art, the advantages of the present invention are: By identifying the arrangement of guide pin I, multiple combination methods can be achieved. Users can encode the anti-misoperation key positions of each connector according to the quantity of connectors of the same model; then set different anti-misoperation key positions for different connectors to accurately and safely achieve anti-misoperation between more equipment slots and connectors in the chassis.

[0010] Furthermore, the anti-misoperation key also includes a fixing ring. The rear end of the identification guide pin I is provided with a front limit block, a rear limit block, and a connecting post between the front limit block and the rear limit block. The fixing ring is provided with a fixing hole that matches the connecting post. The side wall of the fixing hole is provided with an opening groove for inserting the connecting post. The front limit block stops on the front end face of the fixing ring, and the rear limit block stops on the rear end face of the fixing ring. The fixing ring has a clearance fit with the pre-installation groove and a forced fit with the fixing groove.

[0011] Compared with the prior art, the advantages of the present invention are: Using a retaining ring, the two identification guide pins I are installed together into the error-proof slot, improving the installation efficiency of the error-proof key.

[0012] Furthermore, the side wall of the fixing ring is provided with a protruding rib, which is strongly fitted into the inner wall of the fixing groove, and the side wall of the fixing groove is provided with a limiting groove for engaging the protruding rib.

[0013] Compared with the prior art, the advantages of the present invention are: By using the ribs and the limiting grooves to fix the retaining ring in the anti-misalignment groove, the retaining ring and the anti-misalignment groove are kept in a state of compression, thus avoiding failure after a long period of time.

[0014] Furthermore, the identification post I is set on one side of the front end face of the front limit block, and the limiting side is set on the front limit block and the rear limit block, or the limiting side is set on one of the front limit block and the rear limit block.

[0015] Furthermore, the fixing ring is a rectangular plate-shaped body with several fixing holes distributed along its length. After the limiting sides of the several identification guide pins I are adjusted to be parallel, they are inserted into the fixing holes through the opening slots.

[0016] A tool for installing error-proof keys includes a tool housing. One end of the tool housing is detachably provided with an identification guide pin II, which corresponds one-to-one with the identification guide pin I in the error-proof key. The rear end of the identification guide pin II is disposed inside the tool housing, and the front end is an identification post II extending out of the tool housing. The front end face of the identification post II is used to abut against the force-bearing surface of the identification guide pin I. The side of the identification post II is provided with an error-proof mating surface II for matching with the error-proof mating surface I on the identification guide pin I.

[0017] Compared with the prior art, the advantages of the present invention are: The error-proof key is installed using an error-proof key installation tool. The tool presses on the force-bearing surface of the identification guide pin I and applies force to the root of the identification guide pin I, matching the error-proof mating surface I of the identification post I in the identification guide pin I with the error-proof mating surface II of the identification guide pin II. This prevents the error-proof key from tilting or skewing during the process of installing the error-proof key into the error-proof groove 111 on the connector housing 11, and facilitates the installation and adjustment of the error-proof key.

[0018] Furthermore, the rear end of the identification guide pin II has several limiting sides evenly distributed around its circumference, and the end of the tool housing is provided with a mounting groove for inserting the identification guide pin II. The inner wall of the mounting groove matches the limiting sides of the identification guide pin II to limit the orientation of the identification guide pin II.

[0019] Compared with the prior art, the advantages of the present invention are: By using several evenly distributed limiting sides, the orientation of the identification guide pin II on the tool housing can be adjusted according to the orientation of the error-proof key installed on the connector, which can be used to install various error-proof keys.

[0020] Furthermore, a magnet is nested on the tool housing for adsorbing and fixing the identification guide pin II.

[0021] Compared with the prior art, the advantages of the present invention are: The error-proof key installation tool uses a magnetic attachment to fix the identification guide pin II. The direction of the error-proof key composed of the identification guide pin II can be adjusted arbitrarily. When using this error-proof key installation tool to install the error-proof key, the correctness of the error-proof key on the connector can be checked in advance, avoiding repeated disassembly and reassembly of the error-proof key on the connector, and avoiding damage to the error-proof insertion structure caused by forced installation.

[0022] Furthermore, a handle is provided at the other end of the tool housing.

[0023] Compared with the prior art, the advantages of the present invention are: The handle allows for easy application of force to the identification guide pin II, thereby installing the error-proof key into the error-proof slot.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an embodiment of a connector with an anti-misfit mating structure according to the present invention; Figure 2 for Figure 1 A schematic diagram of the combination of the identification guide pin I and the fixing ring to form the anti-misoperation key position; Figure 2a for Figure 2 A schematic diagram of the combination of the guide pin I; Figure 2b for Figure 2 Schematic diagram of the middle fixed ring; Figure 3 for Figure 1 A schematic diagram showing the anti-misalignment keyway composed of the guide pin I and the retaining ring, and its pre-installation on the connector housing; Figure 4 This is an installation diagram of an embodiment of the anti-misalignment key installation tool of the present invention; Figure 5 This is a schematic diagram illustrating the use of an embodiment of the error-proof key installation tool of the present invention; Figure 6 for Figure 1 A schematic diagram showing the anti-misalignment key consisting of the guide pin I and the retaining ring, and the connector housing being installed in place; Figure 7 This is a schematic diagram of a fault-proof structure on a connector housing in the prior art; Figure 8 for Figure 7 Schematic diagram of the installation of the anti-fault structure.

[0026] Figure label: 1-Connector; 11-Connector housing, 111-Anti-misalignment groove, 112-Pre-installation groove, 113-Fixing groove, 114-Limiting groove; 12-Identification guide pin I, 121-Identification post I, 122-Front limit block, 123-Connecting post, 124-Rear limit block, 125-Anti-misalignment mating surface I, 126-Limiting side, 127-Force bearing surface; 13-Fixing ring, 131-Fixing hole, 132-Opening groove, 133-Protruding rib; 14-Contacts; 15-Matching guide pin; 2-Installation tools; 21-Tool housing, 211-Handle, 212-Mounting slot, 213-Magnet slot; 22-Magnet; 23-Identification guide pin II, 231-Identification post II, 232-Mistake-proof mating surface II; 31-Console housing of the prior art, 311-Keyway, 32-Identification key, 321-Square key, 33-Pressure plate, 34-Screw. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] An embodiment of the connector with an anti-misfit mating structure according to the present invention, such as... Figures 1 to 3 and Figure 6 As shown, the connector 1 includes a connector housing 11, an identification guide pin I 12, and a mounting ring 13. In this embodiment, the connector 1 is a rectangular connector. Several contact elements 14 are inserted into the connector housing 11. In this embodiment, the contact elements 14 are vertically bent. Anti-misalignment grooves 111 are provided at both ends of the connector housing 11 along its length for installing the identification guide pin I 12 and the mounting ring 13. The anti-misalignment grooves 111 and the identification guide pin I 12 and the mounting ring 13 installed inside them constitute an anti-misalignment insertion structure. The identification guide pin I 12 and the mounting ring 13 constitute an anti-misalignment key. In other embodiments, the anti-misalignment insertion structure can also be used in other types of connectors. This invention is described with the mating end of the connector as the front end.

[0029] The connector housing 11 has a rectangular anti-misfit groove 111 on each of its mating end faces. A fixing ring 13 and two identification guide pins I 12 are installed within each anti-misfit groove 111. Since both ends of the connector housing 11 have anti-misfit structures, in this embodiment, the connector housing 11 has a total of four identification guide pins I 12. In other embodiments, the connector housing 11 may have one or more anti-misfit structures, and the fixing ring 13 may have one or more identification guide pins I 12.

[0030] The fixing ring 13 is a rectangular plate with two fixing holes 131 distributed along its length. The fixing holes 131 penetrate the fixing ring 13, and the sidewalls of the fixing holes 131 have openings 132 that connect the outside of the fixing ring 13 and the fixing holes 131. The number of fixing holes 131 is equal to the number of identification guide pins I 12 provided on the fixing ring 13.

[0031] The identification guide pin I12 includes an identification post I121, a front limiting block 122, a connecting post 123, and a rear limiting block 124 integrally arranged from front to back. The identification post I121 is a columnar body extending front to back. In this embodiment, the cross-sectional shape of the identification post I121 is trapezoidal. In other embodiments, the trapezoidal shape can be replaced with other axisymmetric or asymmetrical cross-sectional shapes. An error-proof mating surface I125 is formed on the side of the identification post I121. When installing the error-proof key using an installation tool, the error-proof mating surface II232 on the installation tool mates with the error-proof mating surface I125 on the identification post I121 to check the orientation of the identification guide pin I12 for easy identification. The front limiting block 122 is a square block, and the identification post I121 is located on one side of the front end face of the front limiting block 122. A connecting post 123 is vertically disposed on the rear end face of the front limiting block 122. The connecting post 123 is a cylinder, and its diameter is smaller than the side length of the front limiting block 122. A rear limiting block 124 is disposed on the rear end face of the connecting post 123. The rear limiting block 124 is similar in shape to the front limiting block 122, and is a square block with a side length greater than the diameter of the connecting post 123. All four sides of the limiting blocks (including the front limiting block 122 and the rear limiting block 124) are limiting sides 126, and the orientation of a certain limiting side 126 is the orientation of the identification guide pin I 12.

[0032] like Figure 2As shown, the user can insert the connecting posts 123 of the two identification guide pins I 12 into the corresponding opening slots 132 of the fixing ring 13 according to the required orientation of the anti-misoperation key. Then, the connecting posts 123 are inserted into the fixing holes 131. The front limit block 122 and the rear limit block 124 stop at both ends of the fixing ring 13 to prevent forward and backward movement, thus achieving a fixed combination of the identification guide pins I 12 and the fixing ring 13. When the two identification guide pins I 12 are installed into the fixing ring 13, since the limit blocks (including the front limit block 122 and the rear limit block 124) are square blocks, only when one of the limit sides 126 of the limit block of one identification guide pin I 12 is parallel to the opposite limit side 126 of the limit block 124 of the other identification guide pin I 12 can the two identification guide pins I 12 be installed into the fixing ring 13 simultaneously without interference, ensuring that the identification guide pins I 12 are smoothly installed into the fixing ring 13. Before installing the identification guide pin I12 inside the fixing ring 13, adjust the orientation of the identification guide pin I12 according to the requirements of the error-proof key position, so that the limiting sides 126 of the two identification guide pins I12 are parallel to each other. Then insert the fixing ring 13. After the identification guide pins I12 are inserted, the corresponding limiting sides 126 of the two identification guide pins I12 will stop each other to prevent the identification guide pins I12 from rotating and ensure the certainty of the error-proof key position. The front limiting block 122 and the rear limiting block 124 each have four limiting sides 126. Therefore, each identification guide pin I12 has four definite orientations on the fixing ring 13. The connector housing 11 is provided with four identification guide pins I12. Therefore, there are 256 possible combinations of error-proof key positions on the connector. By identifying the arrangement of guide pins I12 on the connector housing 11, multiple slots can be provided in the chassis. Each slot is mutually identified and mated with the anti-misfit structure on the corresponding connector. Multiple connectors of the same model can be installed in the corresponding slots by setting different anti-misfit keys. In other embodiments, the front limit block 122 and the rear limit block 124 can be three or more block-shaped bodies of the limit side 126, realizing fewer or more combinations of anti-misfit keys. The combination of anti-misfit keys can also be increased or decreased by increasing or decreasing the number of identification guide pins I12.

[0033] The error-proof groove 111 includes a pre-installation groove 112 near the opening of the error-proof groove 111 and a fixing groove 113 near the bottom of the error-proof groove 111. The pre-installation groove 112 is clearance-fitted with the fixing ring 13, allowing the error-proof key to be pre-placed in the pre-installation groove 112. The inner wall of the pre-installation groove 112 prevents the identification guide pin I 12 from falling out of the fixing ring 13. Furthermore, the clearance fit between the inner wall of the pre-installation groove 112 and the limiting side 126 of the limiting block on the identification guide pin I 12 enables the identification guide pin I 12 to stop rotating. Both sides of the fixing ring 13 in the width direction are provided with arc-shaped protrusions 123 extending forward and backward. Through the protrusions 123, the fixing ring 13 can be interference-fitted with the inner wall of the fixing groove 113. The two inner walls of the fixed groove 113 are provided with limiting grooves 114. When the fixed ring 13 is forcibly installed in the fixed groove 113, the protruding rib 123 is squeezed and deformed by the inner wall of the fixed groove 113. When the protruding rib 123 moves into the limiting groove 114, the compression interference of the protruding rib 123 decreases, the protruding rib 123 is released and stuck in the limiting groove 114, so that the anti-misalignment key is firmly fixed in the anti-misalignment groove 111. The limiting block achieves anti-rotation engagement in the anti-misalignment groove 111, and fully realizes the determination of the position of the identification guide pin I12.

[0034] To guide the connector during mating, mating guide pins 15 are provided on both sides of the connector housing 11.

[0035] In another embodiment of the connector with an anti-misfit insertion structure of the present invention, improvements are made based on the above embodiment. The protruding rib 133 on the fixing ring 13 can be removed, and the limiting groove 114 on the inner wall of the corresponding fixing groove 113 can be removed. The outer wall of the fixing ring 13 and the inner wall of the fixing groove 113 are forcibly fitted together to achieve the fixed combination of the anti-misfit key positions.

[0036] In another embodiment of the connector with an anti-misfit structure of the present invention, improvements are made based on the above embodiment. In the above embodiment, the identification guide pin I 12 is forcibly installed in the anti-misfit groove 111 by the fixing ring 13. In the improved embodiment, the fixing ring 13 is removed, the front limit block 122 and the rear limit block 124 at the rear end of the identification guide pin I 12 are merged into a single limit block, the connecting post 123 is removed, and the two identification guide pins I 12 form an anti-misfit key position. The pre-installation groove 112 of the anti-misfit groove 111 is clearance-fitted with the limit block, and the fixing groove 113 is forcibly fitted with the limit block. The error-proof groove 111 can be an integral rectangular groove that can simultaneously accommodate two identification guide pins I12. The limiting blocks of the two identification guide pins I12 mutually limit each other circumferentially within the rectangular groove and cooperate with the side wall of the rectangular groove to limit the position of the identification guide pins I12 within the rectangular groove. Alternatively, it can be divided into two square grooves that match the limiting blocks, each accommodating a corresponding identification guide pin I12. The limiting blocks cooperate with the side wall of the square groove to prevent rotation and thus determine the position of the identification guide pins I12.

[0037] In another embodiment of the connector with an anti-misfit structure of the present invention, improvements are made based on the above embodiments. In the above embodiments, the sides of the front limiting block 122 and the rear limiting block 124 are provided with limiting sides 126, and the corresponding limiting sides 126 on the front limiting block 122 and the rear limiting block 124 are parallel to each other or on the same surface. In the improved embodiment, the limiting side 126 can be provided in one of the front limiting block 122 and the rear limiting block 124.

[0038] An embodiment of the present invention provides a tool for preventing incorrect key placement, such as... Figure 4 As shown, the installation tool 2 includes a tool housing 21, a magnet 22, and two identification guide pins II 23. The number of identification guide pins II 23 is equal to the number of identification guide pins I 12 in the error-proof key position. One error-proof key position can be installed at a time using the error-proof key position installation tool. The rear end of the tool housing 21 has a handle 211, and the front end has an installation groove 212. The handle 211 has a hexagonal columnar structure. The identification guide pins II 23 and I 13 have the same structural shape and dimensions, enabling interchangeability of the error-proof key position installation tool. Since the error-proof key position installation tool installs one error-proof key position, the front end of the tool housing 21 has two installation grooves 212. Each installation groove 212 is fitted with one identification guide pin II 23, and the two identification guide pins II 23 correspond to the positions of the two identification guide pins I 12 in the error-proof groove 111. The cross-sectional shape of the mounting slot 212 matches the cross-sectional shape of the rear limiting block 124 on the identification guide pin II 23. After adjusting the identification guide pin II 23 to a certain position, it is inserted into the mounting slot 212, which can limit the identification guide pin II 23 in that position within the mounting slot 212. The outer wall of the tool housing 21 is provided with a magnet slot 213, in which a magnet 22 is forcibly nested. The identification guide pin II 23 is made of magnetic stainless steel. After the identification guide pin II 23 is inserted into the mounting slot 212, the magnet 22 can firmly attract the identification guide pin II 23, fixing it in the mounting slot 212 and allowing for easy removal. The identification guide pin II 23 can be adjusted to different positions to facilitate the installation of different anti-misoperation keys. After the identification guide pin II 23 is installed in the mounting slot 212, the identification post II 231 of the identification guide pin II 23 extends out of the mounting slot 212. To enhance the magnetism of the magnet 22 on the identification guide pin II 23, the tool housing 21 is also made of magnetic stainless steel. To ensure sufficient adsorption force on the identification guide pin II 23, each identification guide pin II 23 is equipped with a corresponding magnet 22, which is located inside the tool housing 21 near the corresponding installation position of the identification guide pin II 23.

[0039] When pre-installing the error-proof key, according to the pre-designed error-proof key layout of the connector, first place the corresponding error-proof key into the pre-installation slot 112 of the error-proof slot 111, such as... Figure 3As shown; then, the two identification guide pins II 23 are installed into the tool housing 21 according to the key positions opposite to the pre-installed identification guide pin I 12 (i.e., the key positions of this connector are opposite to the pre-designed error-proof key positions); the installed error-proof key installation tool 2 is inserted into the error-proof groove 111 on the connector housing 11, as shown. Figure 5 As shown, if the end face of the identification post II231 in the identification guide pin II23 abuts against the front end face of the front limit block 122 in the identification guide pin I12 (i.e., the force-bearing surface 127 located at the root of the identification post I121), and at the same time, the error-proof mating surface II232 of the identification post II231 on the identification guide pin II23 matches the error-proof mating surface I125 of the identification post I121 on the identification guide pin I122, it indicates that the error-proof key in the connector 1 is installed in the correct orientation. Press the handle 211 on the tool housing 21 firmly, and hear a "click" sound. The protruding rib 123 is inserted into the limit groove 114, that is, the error-proof key composed of the identification guide pin I12 and the fixing ring 13 is pressed into and fixed in the fixing groove 113 of the error-proof groove 111 of the connector housing 11, thus realizing the installation of the error-proof key of the connector 1. Figure 6 As shown. Measure the exposed length L of the identification guide pin I 12 extending out of the error-proof groove 111. If L is within the specified range, it indicates that the error-proof key is installed correctly. If, when using the error-proof key installation tool 2, the error-proof mating surface II 232 of the identification post II 231 in the identification guide pin II 23 does not match the error-proof mating surface 125 corresponding to the identification post I 121 in the identification guide pin I 12, then the identification guide pin II 23 interferes with the identification guide pin I 12, and the identification guide pin II 23 cannot be inserted into the error-proof groove 111. This indicates that the identification guide pin I 12 is installed incorrectly and needs adjustment. This ensures that the error-proof key guide connector composed of the identification guide pin I 12 and the fixing ring 13 is inserted into the accurate slot inside the chassis, achieving error-proof insertion. When the error-proof key is forcibly installed in the fixed slot 113, the error-proof key installation tool is first used for identification. If the error-proof key installation tool cannot be inserted into the error-proof slot 111, it means that the error-proof key is installed incorrectly. At this time, the error-proof key is not yet forcibly installed in the error-proof slot 111, making it convenient to remove the error-proof key from the pre-installation slot 112. Then, the identification guide pin I12 can be removed for adjustment without damaging the error-proof insertion structure.

[0040] In another embodiment of the error-proof key installation tool of the present invention, improvements are made based on the above embodiment. The front limit block and the rear limit block on the identification guide pin II 23 can be merged into the same limit block, the connecting column is eliminated, and the limit block is inserted into the corresponding installation slot 212.

[0041] In another embodiment of the error-proof key installation tool of the present invention, an improvement is made on the basis of the above embodiment. The installation groove 212 can be set as a rectangular groove, and two identification guide pins II 23 can be inserted into the rectangular groove at the same time, as long as the position where the identification guide pins II 23 are attracted and fixed corresponds to the position of the identification guide pins I 12 in the error-proof key.

[0042] In another embodiment of the error-proof key installation tool of the present invention, improvements are made based on the above embodiments. An elastic pin is provided in one of the mounting groove 212 and the rear end of the identification guide pin II 23 inserted into the mounting groove 212, and a groove is provided in the other. The elastic pin includes a spring with its elastic force direction perpendicular to the insertion direction of the identification guide pin II 23, and a pin fixed to one end of the spring. The elastic pin is nested in the groove of the inner wall of the mounting groove 212 or the outer wall of the rear end of the identification guide pin II 23. The pin extends out of the groove, and the extended part is hemispherical. The corresponding groove is a hemispherical groove. When the identification guide pin II 23 is inserted, the pin is engaged in the groove through the cooperation of the elastic pin and the groove, thus fixing the identification guide pin II 23 in the mounting groove 212. When adjusting the identification guide pin II 23, it can also be easily pulled out. In this way, the magnet 22 can be eliminated.

[0043] The advantages of this invention are summarized as follows: (1) The anti-misfit key position only uses two parts, the identification guide pin I12 and the fixing ring 13, to realize the function of the anti-misfit structure. The anti-misfit key position is interference-fitted with the anti-misfit groove 111 of the connector housing 11. The anti-misfit key position is fixed by the limiting groove 114 to hold the protruding rib 133 of the fixing ring 13. The structure is simple, the number of parts is small, and the space occupied is small.

[0044] (2) Use the error-proof key installation tool to install the error-proof key. Press the end face of the identification guide pin I12 with the installation tool 2 and apply force to the root of the identification guide pin I12 to match the error-proof mating surface I of the identification post I in the two identification guide pins I. During the process of installing the error-proof key into the error-proof groove 111 on the connector housing 11, the error-proof key can be prevented from tilting or skewing, which facilitates the installation and adjustment of the error-proof key.

[0045] (3) The error-proof key installation tool uses magnetic attraction to fix the identification guide pin II23. The direction of the error-proof key composed of two identification guide pins II23 can be adjusted arbitrarily. When using this error-proof key installation tool to install the error-proof key, the correctness of the error-proof key on the connector can be checked in advance to avoid repeated disassembly and reassembly of the error-proof key on the connector and to avoid damage to the error-proof insertion structure caused by forced installation.

[0046] (4) Anti-misoperation key positions are provided on both sides of the connector. The anti-misoperation key positions include a fixed ring 13 and two identification guide pins I12. By arranging and combining the identification guide pins I12, 256 combination methods can be realized. Users can encode the anti-misoperation key positions of each connector according to the number of connectors of the same model. Then, different anti-misoperation key positions are set for different connectors to accurately and safely realize the anti-misoperation between more equipment slots and connectors in the chassis.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connector with an anti-misfit mating structure, comprising a connector housing (11), characterized in that: The connector housing (11) is provided with an anti-misalignment groove (111) for installing the anti-misalignment key. The anti-misalignment groove (111) includes a pre-installation groove (112) near the opening and in clearance fit with the anti-misalignment key, and a fixing groove (113) near the bottom and in forced fit with the anti-misalignment key. The anti-misalignment key includes several identification guide pins I (12). The rear end of the identification guide pin I (12) is installed in the anti-misalignment groove (111), and the front end is provided with an identification post I (121) extending out of the anti-misalignment groove (111). The side of the identification post I (121) is provided with an anti-misalignment mating surface I (125) for checking the orientation of the identification guide pin I (12). The root of the identification post I (121) is provided with a force-bearing surface (127) for pressing the identification guide pin I (12) from the pre-installation groove (112) into the fixing groove (113).

2. The connector with an anti-misfit mating structure according to claim 1, characterized in that: The rear end of the identification guide pin I (12) has several limiting sides (126) evenly distributed around it. The limiting sides (126) and the anti-rotation groove (111) are matched to limit the orientation of the identification guide pin I (12).

3. A connector with an anti-misfitting structure according to claim 2, characterized in that: The anti-misoperation key also includes a fixing ring (13). The rear end of the identification guide pin I (12) is provided with a front limit block (122), a rear limit block (124), and a connecting post (123) between the front limit block (122) and the rear limit block (124). The fixing ring (13) is provided with a fixing hole (131) that matches the connecting post (123). The side wall of the fixing hole (131) is provided with an opening groove (132) for inserting the connecting post (123). The front limit block (122) stops on the front end face of the fixing ring (13), and the rear limit block (124) stops on the rear end face of the fixing ring (13). The fixing ring (13) is clearance-fitted with the pre-installation groove (112) and forcibly fitted with the fixing groove (113).

4. A connector with an anti-misfitting structure according to claim 3, characterized in that: The side wall of the fixing ring (13) is provided with a protruding rib (133), which is strongly fitted with the inner wall of the fixing groove (113). The side wall of the fixing groove (113) is provided with a limiting groove (114) for locking the protruding rib (133).

5. A connector with an anti-misfitting structure according to claim 3, characterized in that: Identification post I (121) is set on one side of the front end face of the front limit block (122), and the limiting side (126) is set on the front limit block (122) and the rear limit block (124), or the limiting side (126) is set on one of the front limit block (122) and the rear limit block (124).

6. A connector with an anti-misfit mating structure according to claim 3, characterized in that: The fixing ring (13) is a rectangular plate. The fixing ring (13) has several fixing holes (131) distributed along its length. After the limiting sides (126) of several identification guide pins I (12) are adjusted to be parallel, they are inserted into the fixing holes (131) through the opening slot (132).

7. A tool for preventing incorrect key installation, comprising a tool housing (21), characterized in that: One end of the tool housing (21) is detachably provided with identification guide pin II (23). Identification guide pin II (23) corresponds one-to-one with identification guide pin I (12) in the error prevention key. The rear end of identification guide pin II (23) is located inside the tool housing (21), and the front end is identification post II (231) extending out of the tool housing (21). The front end face of identification post II (231) is used to abut against the force-bearing surface (127) of identification guide pin I (12). The side of identification post II (231) is provided with error prevention mating surface II (232) for matching with error prevention mating surface I (125) on identification guide pin I (12).

8. The key installation tool for preventing incorrect key placement according to claim 7, characterized in that: The rear end of the identification guide pin II (231) has several limiting sides evenly distributed around it. The end of the tool housing (21) is provided with a mounting groove (212) for inserting the identification guide pin II (231). The inner wall of the mounting groove (212) matches the limiting side of the identification guide pin II (231) to limit the orientation of the identification guide pin II (231).

9. The key installation tool for preventing misalignment according to claim 8, characterized in that: A magnet (22) for adsorbing and fixing the identification guide pin II (231) is nested on the tool housing (21).

10. The keypad installation tool according to claim 7, characterized in that: A handle (211) is provided at the other end of the tool housing (21).

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