Pin welding and fixing tool

Abstract

The utility model discloses a pin welding and fixing tool which comprises a base body with the length extending in the left-right direction, a welding cavity is formed in the base body, and a first notch is formed in the side, in the plugging direction, of the welding cavity. A plurality of rows of plug terminal limiting holes distributed in the left-right direction are formed in the position, located on the other side of the welding cavity in the plugging direction, of the seat body in parallel in the front-back direction, and a plurality of welding limiting grooves are formed in the row of plug terminal limiting holes adjacent to the plug terminal limiting holes located on the front edge side and the rear edge side in a staggered mode. The opening of each welding support groove faces the corresponding plug terminal mounting hole on the adjacent edge side, and the tail end of each welding support groove is located in the middle area of the seat body. The plugging terminal, the switching printed board and the elastic terminal component can be welded into a contact component by adopting a tool, so that the contact component can be mounted into an insulator of the connector at one time; by means of the tool, the elastic terminal, the plugging terminal and the switching printed board can be welded in a common welding mode, the manufacturing efficiency is higher, and the firmness after welding can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface mount connectors, and in particular relates to a pin welding and fixing tool for manufacturing contact components for connectors. Background Art

[0002] In order to achieve the transmission of electrical signals from high-density single-row surface mount pins to multiple rows of pin ends with larger gaps, existing straddle-type high-density surface mount connectors usually adopt the following two structural forms:

[0003] (1) The surface mount connector includes an insulator and a plurality of elastic terminals, each of which is arranged and combined to form two rows. Figure 1 and Figure 2 Each elastic terminal 10 adopts a stamping integrated molding structure, its plug-in area adopts a rolled pin structure 20, its fixed area adopts a large outer circle structure that can be interference-fitted with the insulator, its transition area adopts a semi-circular arc transition structure, and its pad connection part 101 is bent to form an arc-shaped welding piece structure for bonding and welding with the printed circuit board pad. The defects of this type of connector are mainly: ① The plug-in area of ​​each elastic terminal needs to be rolled to form a pin structure, the manufacturing process is cumbersome, and the molding efficiency is low; ② Each elastic terminal needs to be assembled separately, and the assembly efficiency is low;

[0004] (2) The surface mount connector includes an insulator and a plurality of elastic terminals, each of which is arranged and combined to form two rows. Figure 3 and Figure 4 The elastic terminal 10 is formed into a "1-in-3 structure" through a stamping process, that is, the three pad connection parts 101 located at the upper part of the elastic terminal are coplanarly distributed, and the three welding pins Ⅰ 102 located at the lower end of the elastic terminal are located on different planes (i.e. non-coplanar distribution). Each welding pin Ⅰ is welded and connected with a corresponding pin structure 20. After each three pin structures are welded with the elastic terminal to form a pin component, the whole is installed in the insulator. After multiple pin components are installed in an array into the insulator and fixed by glue, the pad connection part of the elastic terminal is bent into a coplanar arc by a tool to form a welding area connected to the printed circuit board pad. The defects of the connector of this structure are mainly: ① The elastic terminal is thin, insufficient in strength, and easy to deform, which makes it difficult to weld the welding pin of the elastic terminal to the pin structure and the welding is not firm; ② The pin components need to be assembled separately, and the assembly efficiency is low. Utility Model Content

[0005] In view of the above-mentioned defects of the elastic terminals in the existing straddle-type high-density surface mount connectors, the purpose of the utility model is to provide a pin welding fixture, which can be used to manufacture the contact component as an integral component and ensure the welding firmness of the welding pins of the plug-in terminal.

[0006] In order to achieve the aforementioned objectives, the utility model adopts the following technical solutions: a pin welding fixing tool, comprising a base body 70 extending in length along the left-right direction, a welding chamber 701 being provided inside the base body and a first notch 7011 being provided on one side of the welding chamber along the plug-in direction, a plurality of rows of plug-in terminal limiting holes distributed along the left-right direction being arranged in parallel along the front-to-back direction on the base body located on the other side of the welding chamber along the plug-in direction, and a plurality of welding limiting grooves 703 being staggered on a row of plug-in terminal limiting holes adjacent to the plug-in terminal limiting holes located on the front and rear edge sides, and an opening of each welding support groove faces a corresponding plug-in terminal mounting hole on the adjacent edge side, and an end thereof is located in the middle area of ​​the base body.

[0007] In one embodiment, a second limiting groove 7021 with an anti-rotation structure is provided on the limiting hole of the plug-in terminal located in the middle area of ​​the seat body.

[0008] In one embodiment, a second guiding surface is provided at the entrance of the limiting hole of the plug-in terminal.

[0009] In one embodiment, a welding guide block 704 is protruded on the seat body located on the other side of the welding chamber along the plug-in direction to cover the multiple rows of plug-in terminal limiting holes located in the middle area, and welding limiting grooves 703 distributed along the left and right directions are respectively provided on the front and rear sides of the welding guide block.

[0010] In one embodiment, the plug-in terminal limiting holes located at the front and rear edge sides are staggered with an adjacent row of plug-in terminal limiting holes, and the welding limiting groove 703 passes obliquely between two adjacent plug-in terminal limiting holes in the same row.

[0011] In one embodiment, welding positioning columns 705 for plugging and matching with the positioning holes at both ends of the transfer printed circuit board are respectively provided on the left and right sides of the base body 70 located at the other side of the welding chamber along the plug-in direction.

[0012] In one embodiment, the left and right ends of the seat body 70 are respectively provided with matching anti-misinstallation structures for cooperating with the anti-misinstallation structures at the two ends of the positioning insulator.

[0013] In one embodiment, the welding chamber 701 is provided with second notches 7012 on both sides along the front-to-back direction.

[0014] In one embodiment, six rows of plug-in terminal limiting holes distributed along the left-right direction are arranged in parallel along the front-to-back direction on the seat body 70 located on the other side of the welding chamber along the plug-in direction, wherein the first row of plug-in terminal limiting holes and the sixth row of plug-in terminal limiting holes are respectively located on the front and rear edge sides of the seat body, the second row of plug-in terminal limiting holes, the third row of plug-in terminal limiting holes, the fourth row of plug-in terminal limiting holes, and the fifth row of plug-in terminal limiting holes are all located in the middle area of ​​the seat body, the first row of plug-in terminal limiting holes and the second row of plug-in terminal limiting holes are staggered, and the sixth row of plug-in terminal limiting holes and the fifth row of plug-in terminal limiting holes are staggered; the second row of plug-in terminal limiting holes and the fifth row of plug-in terminal limiting holes are staggered. A plurality of welding limit grooves 703 are staggered on the top, and the plurality of welding limit grooves on one row are obliquely passed through between two adjacent limit holes of the plug-in terminal on the ② row, and the opening of each welding positioning groove faces a corresponding plug-in terminal installation hole on the ① row, and the end thereof is located at the center position between the limit holes of the plug-in terminal on the ② row and the limit holes of the plug-in terminal on the ③ row; the welding limit grooves on the other row are obliquely passed through between two adjacent limit holes of the plug-in terminal on the ⑤ row, and the opening of each welding positioning groove faces a corresponding plug-in terminal installation hole on the ⑥ row, and the end thereof is located at the center position between the limit holes of the plug-in terminal on the ④ row and the limit holes of the plug-in terminal on the ⑤ row.

[0015] In one embodiment, the plug-in terminal limiting hole is a pin limiting hole 702 .

[0016] The pin welding fixture can achieve the following beneficial effects:

[0017] (1) The tooling can be used to weld multiple plug-in terminals, transfer printed circuit boards, and elastic terminal components into an integral component: a contact component, so that the contact component can be installed into the insulator of the connector at one time, thereby improving the assembly efficiency of the connector;

[0018] (2) With the aid of the tool, the existing common welding method can be used to weld the welding pins I of the elastic terminals distributed in rows and the surface mount pads of the transfer printed circuit board, and the welding pins II of the plug-in terminals and the through-hole pads of the transfer printed circuit board. No additional special equipment is required, which not only increases the production efficiency, but also ensures the firmness after welding;

[0019] (3) With the help of the layout of the plug-in terminal limiting holes and welding limiting grooves on the tooling, the welding pins II of the bent plug-in terminals and eccentric plug-in terminals can be concentrated in the middle area of ​​the seat body, thereby allowing the transfer printed circuit board to leave areas on both sides for arranging surface mount pads, thereby increasing the node density of the connector and effectively reducing the width of the transfer printed circuit board, which naturally reduces the width of the connector.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 and Figure 2 It is a structural diagram of existing LRM products.

[0022] Figure 3 It is a schematic diagram of the structure of the elastic terminal in the existing RM product.

[0023] Figure 4 It is a connection diagram of the elastic terminal and the three pin structures in the existing RM product.

[0024] Figure 5 It is a three-dimensional schematic diagram of a connector according to this embodiment.

[0025] Figure 6 yes Figure 5 The illustrated connector is a schematic diagram of the installation of the contact components on the insulator when the two connection ears, the front baffle plate and the rear baffle plate are removed.

[0026] Figure 7 yes Figure 5 A three-dimensional schematic diagram of the contact components in the connector shown.

[0027] Figure 8 yes Figure 7 Schematic cross-section of the contact components shown.

[0028] Fig. 9 yes Figure 5 A three-dimensional schematic diagram of the elastic terminal component in the connector shown.

[0029] Fig.10 yes Figure 8 A side view of a row of resilient terminals in the resilient terminal assembly is shown.

[0030] Fig.11 yes Figure 8 A three-dimensional schematic diagram of the positioning insulator in the elastic terminal component is shown.

[0031] Fig.11A yes Fig.11 A magnified schematic diagram of center A.

[0032] Fig.12 yes Fig. 9 A schematic cross-sectional view of the elastic terminal component shown.

[0033] Fig.13The present invention is a three-dimensional schematic diagram of an embodiment of a bonding tool for elastic terminal components.

[0034] Fig.14 yes Fig.13 A schematic diagram of the connection cross section of the elastic terminal component, base, and pressure block in the bonding tool shown.

[0035] Fig.15 yes Fig.13 A three-dimensional schematic diagram of the base in the bonding tooling shown.

[0036] Fig.15A yes Fig.15 A magnified schematic diagram of point B in the middle.

[0037] Fig.16 yes Fig.13 A three-dimensional schematic diagram of the pressing block in the bonding tooling shown.

[0038] Fig.16A yes Fig.16 Enlarged schematic diagram of point C in the middle.

[0039] Fig.17 yes Fig.13 Schematic diagram of the positional relationship of the base, pressure block and support seat in the bonding tooling shown.

[0040] Fig.18 yes Figure 5 Schematic diagram of the eccentric pin structure in the connector shown.

[0041] Fig.19 yes Figure 5 Schematic diagram of the bent pin structure in the connector shown.

[0042] Fig. 20 yes Figure 5 A perspective schematic diagram of the insulator in the connector shown.

[0043] Fig.21 yes Fig. 20 Schematic top view of the insulator shown.

[0044] Fig. 22 is Fig. 20 A top view schematic diagram showing an eccentric pin structure and a bent pin structure installed on an insulator.

[0045] Fig.23 yes Figure 7 A schematic top view of the transfer printed circuit board in the contact component shown.

[0046] Fig.24 The present invention is a three-dimensional schematic diagram of an embodiment of a pin welding fixing tool.

[0047] Fig.25 yes Fig.24A schematic top view of the fixing tool shown.

[0048] Fig.26 is Fig.24 A top view schematic diagram of an eccentric pin structure and a bent pin structure installed on a fixed tooling shown.

[0049] Fig. 27 yes Figure 5 The schematic diagram of the flow of glue when the connector is being filled with glue is shown.

[0050] [Reference Signs]

[0051] 10-elastic terminal, 101-pad connection part, 102-welding pin I, 103-first fixed section, 104-second fixed section, 105-connecting section, 20-pin structure, 201-eccentric pin structure, 202-bent pin structure, 203-welding pin II, 204-limiting part, 205-bending section, 30-insulator, 301-connecting ear, 3021-front baffle, 3022-rear baffle Board, 303-mounting slot, 304-pin mounting hole, 3041-limiting slot, 305-limiting support slot, 306-guide block, 3071-second large key slot, 3072-second small key slot, 308-positioning column, 309-chamber, 310-glue penetration gap, 40-transfer printed circuit board, 401-surface mount pad, 402-through hole pad, 403-positioning hole, 50-positioning insulator, 501-positioning slot , 5011-first opening, 50111-guide surface, 5012-second opening, 5021-large convex key, 5022-small convex key, 503-glue penetration hole, 601-base, 6011-positioning surface, 60111-pin positioning groove, 6012-large keyway, 6013-small keyway, 6014-process groove, 602-pressing block, 6021-pressing surface, 6022-stop surface, 603-pressure Mechanism, 604-support seat, 6041-groove, 60411-side wall, 6042-boss, 70-seat body, 701-welding chamber, 7011-first notch, 7012-second notch, 702-pin limiting hole, 7021-second limiting groove, 703-welding limiting groove, 704-welding guide block, 705-welding positioning column, 7061-third large keyway, 7062-third small keyway. DETAILED DESCRIPTION

[0052] The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without some of these specific details. The following description of the embodiment is only to provide a better understanding of the utility model by showing an example of the utility model. In the drawings and the following description, at least part of the known structures and technologies are not shown to avoid unnecessary ambiguity of the utility model; and, for clarity, the size of some structures may be exaggerated. The features, structures or characteristics described below can be combined in one or more embodiments in any suitable manner. In addition, the terms "first or I", "second or II", "third or III", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the utility model. In the description of the utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0054] See also Figure 5 and Figure 6 A connector of this embodiment includes a strip-shaped insulator 30 extending in the left-right direction, and connecting ears 301 for mounting the insulator on the corresponding sub-board are respectively arranged at both ends of the insulator in the length direction, and a front baffle 3021 and a rear baffle 3022 are respectively arranged on the front and rear sides of the insulator, and the two sides of the front baffle 3021 and the rear baffle 3022 are respectively fixedly connected to the connecting ears 301 on the same side, and the front baffle and the rear baffle form a connector plug-in cavity, which is used to protect the contact components and guide the connector plug-in.

[0055] Please also see Figure 6 and Figure 7 , Figure 8In this embodiment, a connector further includes a contact component arranged on an insulator, the contact component includes a plurality of elastic terminals 10 distributed in two rows, a plurality of pin structures 20 distributed in multiple rows, and a transfer printed board 40, the welding pins Ⅰ102 of the elastic terminals and the welding pins Ⅱ of the pin structures 20 are respectively connected to the transfer printed board 40; when the contact component is installed in the connector, the pin structure 20 is installed in the pin mounting hole 304 on the aforementioned insulator 30, the transfer printed board 40 is placed in the mounting groove 303 of the aforementioned insulator 30, and the mounting groove 303 is filled with colloid. The aforementioned contact component and the connector using the contact component have the following advantages: (1) The design of the transfer printed circuit board realizes the conduction of electrical signals between the single-row elastic terminal and the multi-row pin structure. The welding pin I of the elastic terminal can be connected to the surface mount pad on the transfer printed circuit board by manual welding or other methods, and the welding pin II of the pin structure can be connected to the via pad on the transfer printed circuit board by manual welding or reflow welding. The preparation process of the aforementioned elastic terminal and the pin structure and the welding process of the two with the transfer printed circuit board are all existing mature processes and do not require additional special equipment. Compared with the existing LRM product in which each elastic terminal needs to be additionally formed into a pin structure through a rolling process, resulting in low forming efficiency, the present embodiment has higher production efficiency. At the same time, compared with the existing RM product in which the welding pin of each elastic terminal is difficult to weld to the pin structure and the welding is not firm, the present embodiment has excellent firmness after welding; (2) The contact component after the pre-welding of multiple elastic terminals, multiple pin structures, and the transfer printed circuit board is assembled as an integral component and installed in the insulator at one time, which has high assembly efficiency.

[0056] See also Fig. 9 In this embodiment, a positioning insulator 50 is additionally provided on the two rows of elastic terminals to form an elastic terminal component. The elastic terminal component includes a plurality of elastic terminals 10 distributed in two rows, and a positioning insulator 50 fixedly provided at the lower part of the elastic terminals and extending along the arrangement direction (i.e., left-right direction) of the single-row elastic terminals. Fig.11 and Fig.11A The front and rear sides (i.e., the sides in the width direction) of the positioning insulator are provided with a plurality of positioning grooves 501 along the arrangement direction of the single-row elastic terminals, and the plurality of positioning grooves 501 on both sides are preferably distributed in a one-to-one correspondence. The lower portion of each elastic terminal 10 is fixed in the corresponding positioning groove 501, and the same-row pad connection portion 101 located at the upper portion of the elastic terminal and used for welding and connecting with the printed circuit board inserted between the two rows of elastic terminals is coplanarly distributed, and the welding pins I 102 located at the lower end of the elastic terminal and used for welding and connecting with the surface-mount pads on the transfer printed circuit board 40 are coplanarly distributed (such as Fig.12As shown). The above-mentioned elastic terminal component has the following advantages: (1) The elastic terminal adopts a stamping integrated molding structure, and its pad connection part and welding pin I both adopt a coplanar distribution structure, which has a good molding process and is easy to ensure coplanarity and alignment; (2) The multiple elastic terminals distributed in two rows are fixed on the positioning insulator by a tooling to form a symmetrically arranged flat package surface mount pin structure. The coplanarity and alignment can be guaranteed by the tooling, which reduces the requirements for the terminal parts molding process and is conducive to mass production; (3) The deformation of the elastic terminal caused by the existing long strip insulating parts integrally injected on the elastic terminals distributed in rows is avoided (for example, the welding pins are twisted and deformed, and the slender insulating parts are warped and deformed, causing the entire elastic terminal component to deform, etc.); (4) The elastic terminals distributed in rows and the positioning insulator are formed into an integral component with the help of the tooling, which is not only convenient for one-time installation into the insulator, improving the assembly efficiency, but also effectively ensuring the coplanarity of the welding pins, which is convenient for the subsequent rapid alignment and connection of the elastic terminal component with the printed circuit board and the transfer printed circuit board.

[0057] See also Fig.10 and Fig.12 In this embodiment, the elastic terminal adopts a stamping integrated molding structure, a pad connection portion 101 is provided on the upper part thereof, and a first fixing section 103, a second fixing section 104, a connecting section 105 and a welding pin I 102 are provided on the lower part thereof, the first fixing section extends along the plugging and unplugging direction of the connector and the adapter connector and is used to fit the side wall of the aforementioned positioning groove 501, the second fixing section extends along the front-to-back direction and is used to fit the bottom wall of the aforementioned positioning groove 501 for fixing, and by means of the fitting of the aforementioned two fixing sections with the corresponding wall surfaces of the positioning groove, the position consistency of all elastic terminals is ensured; the welding pin I 102 extends along the front-to-back direction and is used to be welded to the surface-mount pad on the transfer printed circuit board; the connecting section 105 located between the welding pin I and the second fixing section extends downwardly at an angle, which not only avoids the terminal damage caused by excessive bending angle, but also when the glue is subsequently poured into the mounting groove of the insulator, the glue can penetrate from the gap between the two adjacent connecting sections on the same row of elastic terminals toward the two sides of the connector. Specifically, in this embodiment, the first fixing section fits the side wall of the positioning groove 501, and the second fixing section fits the bottom wall of the positioning groove 501 and is fixed by bonding. Of course, other types of fixing methods, such as thermoplastic process, can be used in other embodiments of the utility model.

[0058] See also Fig.11 and Fig.11A In this embodiment, the positioning groove 501 has a first opening 5011 perpendicular to the plug-in direction and a second opening 5012 parallel to the plug-in direction. The first opening 5011 is provided with a guide surface 50111 to facilitate the first fixing section and the second fixing section of the elastic terminal to enter the corresponding positioning groove for limiting.

[0059] See also Fig.11 In this embodiment, the left end of the positioning insulator 50 is provided with a large convex key 5021, and the right end is provided with a small convex key 5022. Through the aforementioned large and small convex keys, the positioning insulator can be accurately positioned and quickly installed on the insulator or bonding tooling.

[0060] See also Fig.11 and Fig.11A In this embodiment, a plurality of glue penetration holes 503 are provided on the positioning insulator 50 located between the two rows of positioning grooves along the left and right directions. When glue is poured into the mounting groove of the insulator, the glue can enter the cavity between the positioning insulator and the transfer printed circuit board through the glue penetration holes, and then flow from the gap between two adjacent connecting sections on the row of elastic terminals toward the two sides of the connector, thereby achieving uniform penetration of the glue.

[0061] See also Fig.13 and Fig.14 This embodiment also provides a bonding tool for an elastic terminal component, including a strip-shaped base 601 extending in the left-right direction, and a strip-shaped pressing block 602 extending in the left-right direction. Fig.14 The top surface of the base 601 is used to limit the positioning of the insulator 50. The front and rear sides of the base 601 are formed with a step structure to form a positioning surface 6011 for placing the welding pin Ⅰ102 of the elastic terminal, and the two positioning surfaces 6011 are located on the same plane. The pressure block 602 applied with pressure by the pressure mechanism 603 (an existing mature component, which will not be described in detail) is used to press the welding pin Ⅰ102 placed on the corresponding positioning surface.

[0062] See also Fig.15 In this embodiment, a large key slot 6012 is provided at the left end of the top surface of the base 601, and a small key slot 6013 is provided at the right end. In this embodiment, the positioning insulator 50 is quickly limited on the top surface of the base 601 by the snap-fitting of the large convex key and the large key slot, and the snap-fitting of the small convex key and the small key slot.

[0063] For further information, see Fig.15A , multiple pin positioning grooves 60111 are arranged at intervals along the left-right direction (i.e., the arrangement direction of the single-row elastic terminals) on the two positioning surfaces, and the multiple pin positioning grooves 60111 on the two positioning surfaces are distributed one-to-one, and the welding pins I of multiple elastic terminals on the same row are limited to the corresponding pin positioning grooves and then pressed by the pressing block to ensure the coplanarity and alignment of the welding pins I of the two rows of elastic terminals. Furthermore, multiple process grooves 6014 are arranged at intervals along the left-right direction on the base 601 located between the two positioning surfaces, and each process groove is connected to the two correspondingly distributed pin positioning grooves 60111. With the above design, the processing efficiency of the pin positioning groove is improved.

[0064] Please also see Fig.14 and Fig.16 , Fig.16A One side of the pressing block 602 is formed with a pressing surface 6021 extending in the left-right direction and a stopping surface 6022 extending in the left-right direction through a step structure. When the pressing block presses the welding pin I placed on the positioning surface, the pressing surface 6021 completely covers and presses the welding pin I 102. At the same time, the stopping surface and the front side wall or the rear side wall of the base form a stopping fit to prevent the pressing block from touching the connecting section 105 at the bottom of the elastic terminal.

[0065] Please also see Fig.13 and Fig.17 In this embodiment, the bonding tooling also includes an I-shaped support seat 604, and a groove 6041 extending in the left-right direction is provided through the support seat 604 so that a boss 6042 is formed at each of the four corners of the support seat, and a base 601 is provided in the groove 6041 between the aforementioned bosses; the pressing block 602 is placed in the aforementioned groove 6041, and the stop surface on one side of the pressing block is matched with the base for stopping, and the other side of the pressing block is also matched with the side wall 60411 of the groove for stopping; a pressing mechanism 603 is provided on each boss, and the length of the pressing block 602 is greater than the length of the base 601, and the two sides of the pressing block 602 that do not cover the welding pin I are respectively connected to the output end of the pressing mechanism. With the help of the aforementioned support seat, this embodiment forms the base, the pressure block, and the pressure-applying mechanism into an integral component, thereby avoiding the phenomenon of random stacking of the aforementioned components. At the same time, when the elastic terminal and the positioning insulator are bonded, the pressure block can be quickly positioned and assembled in the groove through the aforementioned two stop cooperations, and the pressure-applying mechanism applies pressure to the two sides of the welding pin I that are not covered by the pressure block, thereby ensuring the uniformity of the pressure on the welding pin I of the elastic terminal.

[0066] Based on the aforementioned bonding tool, this embodiment further provides a method for manufacturing an elastic terminal component, including:

[0067] (1) The positioning insulator 50 is limited on the top surface of the base 601: Specifically, in this embodiment, the positioning insulator is quickly limited on the base by means of the snap fit between the large convex key and the large key groove, and the snap fit between the small convex key and the small key groove;

[0068] (2) Install two rows of elastic terminals 10 on the positioning insulator 50 respectively, and make the lower part of each elastic terminal be located in the corresponding positioning groove 501, and place the welding pins I102 of multiple elastic terminals in the same row on the positioning surface 6011 on the same side;

[0069] Specifically, in this embodiment, the first fixing section 103 at the bottom of each elastic terminal is attached to the side wall of the corresponding positioning groove 501, the second fixing section 104 is attached to the bottom wall of the same positioning groove 501, and the welding pins Ⅰ102 of multiple elastic terminals in the same row are placed in the corresponding pin positioning grooves 60111 on the positioning surface on the same side;

[0070] (3) The two pressing blocks 602 exerting pressure on the pressing mechanism respectively press the welding pins I 102 on the corresponding positioning surfaces;

[0071] Specifically, in this embodiment, the two pressing blocks 602 are symmetrically installed into the groove 6041 on the support seat 604, and the stop surface on one side of the pressing block and the base form a stop fit, and the other side of the pressing block and the side wall 60411 of the groove form a stop fit, so that the pressing surface 6021 contacts the welding pin Ⅰ102 on the corresponding positioning surface, and four pressing mechanisms 603 are arranged on four bosses 6042, and the two pressing mechanisms are respectively pressed on the two sides of the pressing block that do not cover the welding pin Ⅰ, so that the pressing surface 6021 of the pressing block presses the welding pin Ⅰ102 on the corresponding positioning surface;

[0072] (4) Apply glue in the positioning groove 501 to bond the two rows of elastic terminals and the positioning insulator together to form a symmetrically arranged flat package surface mount pin structure (i.e., elastic terminal component).

[0073] The pin structure 20 in this embodiment includes an eccentric pin structure 201 and a bent pin structure 202. The eccentric pin structure refers to a pin structure in which a welding pin II 203 is connected to a stopper 204 of the pin structure and the axis of the welding pin II is not in a straight line with the axis of the pin structure (e.g. Fig.18 As shown), the bent pin structure refers to the soldering pin II 203 of the pin structure being located outside the limiting portion 204 of the pin structure and the two being connected by a bending section 205 (as shown Fig.19 shown).

[0074] See also Fig. 20 and Fig.21In order to adapt to the above-mentioned two pin structures, in this embodiment, six rows of pin mounting holes 304 distributed along the left-right direction are arranged in parallel along the front-to-back direction on the insulator 30 located on one side of the mounting groove 303 along the plug-in direction, among which the ① row of pin mounting holes and the ⑥ row of pin mounting holes located on the front and rear edge sides and penetrating the insulator along the plug-in direction are provided with circular limiting grooves 3041, and the ② row of pin mounting holes, the ③ row of pin mounting holes, the ④ row of pin mounting holes and the ⑤ row of pin mounting holes located between the ① row and the ⑥ row and penetrating the insulator along the plug-in direction are provided with limiting grooves 3041 with anti-rotation structures, and at the same time, two rows of limiting support grooves 305 distributed along the left-to-right direction are arranged on the wall surface of the insulator 30 away from the plug-in end, and one row of limiting support grooves 305 is arranged crosswise with the ② row of pin mounting holes 304, and the other row of limiting support grooves 305 is arranged crosswise with the ⑤ row of pin mounting holes 304. The opening of each limiting support groove faces a corresponding pin mounting hole 304 on the adjacent edge side, and the end thereof is located in the middle area of ​​the insulator. Therefore, during assembly of this embodiment, the eccentric pin structure 201 of the contact component is installed into the second row of pin mounting holes, the third row of pin mounting holes, the fourth row of pin mounting holes, and the fifth row of pin mounting holes at one time, and the limiting portion 204 of the eccentric pin structure forms a rotation-stopping fit with the limiting groove 3041 to prevent the eccentric pin structure from rotating. The bent pin structure 202 of the contact component is installed into the first row of pin mounting holes and the sixth row of pin mounting holes at one time, and the bent sections 205 are respectively placed in the corresponding limiting support grooves 305. The limiting support grooves are used to support and limit the bent sections, which can not only prevent the bent pin structure from rotating, but also ensure the position stability of the welding pin II at the tail of the bent pin structure, and improve the structural strength of the tail of the pin to avoid kneeling of the pin. This embodiment uses a bent pin structure and an eccentric pin structure to concentrate the welding pins II of all the pin structures in the middle area of ​​the insulator for uniform distribution, leaving the two edge sides of the insulator along the front-to-back direction (i.e., the area directly above the plugging end of the bent pin structure in the plugging and unplugging direction) to facilitate the arrangement of the surface mount pads on the transfer printed circuit board. The above method increases the node density, reduces the width of the transfer printed circuit board, and also reduces the width of the connector.

[0075] For details, please refer to Fig. 20 and Fig.21 In this embodiment, a guide block 306 covering the aforementioned second row of pin mounting holes, third row of pin mounting holes, fourth row of pin mounting holes, and fifth row of pin mounting holes is convexly provided on the wall surface of the insulator away from the plug-in end, and two rows of limiting support grooves 305 distributed along the left-right direction are provided on the front and rear sides of the guide block, one row of limiting support grooves 305 is staggered with the second row of pin mounting holes 304, and the other row of limiting support grooves 305 is staggered with the fifth row of pin mounting holes 304.

[0076] For details, please refer to Fig.21 and Fig. 22 In this embodiment, the ends of the multiple limiting support grooves 305 cross-set with the second row of pin mounting holes 304 are located at the center position between the second row of pin mounting holes and the third row of pin mounting holes, and the ends of the multiple limiting support grooves 305 cross-set with the fifth row of pin mounting holes 304 are located at the center position between the fourth row of pin mounting holes and the fifth row of pin mounting holes.

[0077] For details, please refer to Fig.21 and Fig. 22 In this embodiment, the first row of pin mounting holes and the second row of pin mounting holes are staggered and each limit support groove 305 on the corresponding row obliquely passes between two adjacent pin mounting holes 304 on the second row, and the sixth row of pin mounting holes and the fifth row of pin mounting holes are staggered and each limit support groove 305 on the corresponding row obliquely passes between two adjacent pin mounting holes 304 on the fifth row. In this embodiment, the eccentric pin structure and the bent pin structure are staggered and equidistantly distributed (i.e., the two adjacent rows of pin mounting holes are staggered, the spacing between the two adjacent rows of pin mounting holes is consistent, and the spacing between the two adjacent pin mounting holes on the same row is consistent), and the bending section of the bent pin structure is obliquely inserted to guide the welding pin II to the middle area of ​​the insulator, thereby ensuring the uniformity of the distance between nodes under the premise of high-density node arrangement, and still having high welding processability.

[0078] For details, please refer to Fig.21 and Fig. 22 The welding pin Ⅱ203 of the eccentric pin structure of the second row installed in the pin mounting hole of the second row is close to the pin mounting hole of the first row, the welding pin Ⅱ203 of the eccentric pin structure of the third row installed in the pin mounting hole of the third row is close to the pin mounting hole of the fourth row, the welding pin Ⅱ203 of the eccentric pin structure of the fourth row installed in the pin mounting hole of the fourth row is close to the pin mounting hole of the third row, and the welding pin Ⅱ203 of the eccentric pin structure of the fifth row installed in the pin mounting hole of the fifth row is close to the pin mounting hole of the sixth row.

[0079] For details, please refer to Fig.18 In this embodiment, the limiting portion 204 on the eccentric pin structure 201 is an anti-rotation flat structure, so the limiting grooves 3041 on the second row of pin mounting holes, the third row of pin mounting holes, the fourth row of pin mounting holes, and the fifth row of pin mounting holes located in the middle area of ​​the insulator are all limiting flat grooves that are compatible with the aforementioned anti-rotation flat structure.

[0080] For details, please refer to Fig. 20In this embodiment, the left end of the insulator 30 is provided with a second large keyway 3071, and the right end is provided with a second small keyway 3072. In this embodiment, the positioning insulator 50 is quickly limited in the installation groove 303 of the insulator through the snap-fitting of the large convex key and the second large keyway, and the snap-fitting of the small convex key and the second small keyway.

[0081] See also Fig.23 In order to adapt to the above two types of pin structures and insulators, the front and rear edges of the transfer printed board 40 in this embodiment are respectively provided with rows of surface mount pads 401 extending in the left and right directions. The surface mount pads are located directly above the axis of the corresponding bent pin structure plugging end and are used to match the welding pins Ⅰ102 of the elastic terminal to achieve the welding connection between the elastic terminal and the transfer printed board. The transfer printed board 40 located between the two rows of surface mount pads is provided with six rows of symmetrically distributed via pads 402, and the surface mount pads and the corresponding via pads are interconnected through the pre-buried lines on the transfer printed board. Each via pad is used to be welded and connected with the welding pins Ⅱ203 of the corresponding pin structure, so that the elastic terminal component, the transfer printed board, and multiple pin structures constitute an integrated contact component. The transfer printed board in this embodiment adopts a symmetrical layout structure, and the stress of the solder joints is evenly distributed after welding, which can avoid the warping of the transfer printed board.

[0082] For details, please also refer to Fig. 20 and Fig.23 In this embodiment, a positioning column 308 is protruded on the wall surface of the insulator away from the plug-in end, and positioning holes 403 are respectively provided on the left and right ends of the transfer printed circuit board 40. Through the plug-in cooperation of the positioning column and the positioning hole, the transfer printed circuit board of the contact component can be quickly installed in the installation groove of the insulator, and at the same time, all the pin structures can be quickly installed on the insulator at one time.

[0083] See also Fig.24The present embodiment further proposes a pin welding fixture, comprising a strip-shaped seat body 70 extending in the left-right direction, a welding chamber 701 being provided inside the seat body, and a first notch 7011 being provided on one side of the welding chamber along the plug-in direction for facilitating the installation of multiple pin structures 20, a transfer printed circuit board 40, and a positioning insulator 50 of an elastic terminal component into the welding chamber, and six rows of pin limiting holes 702 distributed in the left-right direction are arranged in parallel along the front-to-back direction on the seat body 70 located on the other side of the welding chamber along the plug-in direction, wherein the first row of pin limiting holes 702 located on the front and rear edge sides and penetrating the seat body along the plug-in direction A circular second limiting groove 7021 is set on the limiting holes and the 6th row of pin limiting holes. A second limiting groove 7021 with an anti-rotation structure is set on the 2nd row of pin limiting holes, the 3rd row of pin limiting holes, the 4th row of pin limiting holes and the 5th row of pin limiting holes, which are located between the 1st row and the 6th row and penetrate the seat body along the plugging and unplugging direction. At the same time, two rows of welding limiting grooves 703 distributed along the left and right directions are set on the seat body wall surface located on the other side of the welding chamber along the plugging and unplugging direction, and one row of welding limiting grooves 703 is cross-arranged with the 2nd row of pin limiting holes 702, and the other row of welding limiting grooves 703 is cross-arranged with the 5th row The pin mounting holes 702 are cross-arranged, and the opening of each welding limit groove faces a corresponding pin limit hole 702 on the adjacent edge side, and the end thereof is located in the middle area of ​​the seat body. When the pin structure and the transfer printed circuit board need to be welded, a plurality of eccentric pin structures 201 are installed one by one into the second row of pin limit holes, the third row of pin limit holes, the fourth row of pin limit holes, and the fifth row of pin limit holes, and the limit portion 204 forms a stop fit with the second limit groove 7021 to prevent the eccentric pin structure from rotating during the welding process; then a plurality of bent pin structures 202 are installed one by one into the first row of pin limit holes The limiting holes and the sixth row of pin limiting holes and the bending section 205 are respectively placed in the corresponding welding limiting grooves 703. The welding limiting grooves are used to support and limit the bending sections, which can not only prevent the bent pin structure from rotating during the welding process, but also ensure the position stability of the welding pin II at the tail of the bent pin structure during the welding process; finally, the transfer printed circuit board 40 is placed in the welding chamber 701, and the welding pin II 203 of each pin structure is placed in the corresponding through-hole pad 402 and then the two are welded, so that multiple pin structures and transfer printed circuit boards can be formed into an integrated transfer printed circuit board component.

[0084] For details, please refer to Fig.24 and Fig.25 In this embodiment, a welding guide block 704 covering the aforementioned second row of pin limiting holes, third row of pin limiting holes, fourth row of pin limiting holes and fifth row of pin limiting holes is protruded on the wall surface of the seat body located on the other side of the welding chamber along the plug-in and pull-out direction, and two rows of welding limiting grooves 703 distributed along the left and right directions are arranged on the front and rear sides of the welding guide block, one row of welding limiting grooves 703 are staggered with the second row of pin limiting holes, and the other row of welding limiting grooves 703 are staggered with the fifth row of pin limiting holes.

[0085] For details, please refer to Fig.24 and Fig.25 In this embodiment, the ends of the multiple welding limit grooves 703 cross-set with the second row of pin limit holes 702 are located at the center position between the second row of pin limit holes and the third row of pin limit holes, and the ends of the multiple welding limit grooves 703 cross-set with the fifth row of pin limit holes 702 are located at the center position between the fourth row of pin limit holes and the fifth row of pin limit holes.

[0086] For details, please refer to Fig.25 and Fig.26 In this embodiment, the first row of pin limiting holes and the second row of pin limiting holes are staggered and each welding limiting groove 703 on the corresponding row passes obliquely between two adjacent pin limiting holes 702 on the second row, and the sixth row of pin limiting holes and the fifth row of pin limiting holes are staggered and each welding limiting groove 703 on the corresponding row passes obliquely between two adjacent pin limiting holes 702 on the fifth row. With the above design, the uniformity of the distance between nodes is ensured under the premise of ensuring high-density pin node arrangement, and high welding processability is still achieved.

[0087] For details, please refer to Fig.25 and Fig.26 The welding pin Ⅱ203 of the eccentric pin structure of the second row installed in the pin limiting hole of the second row is close to the pin limiting hole of the first row, the welding pin Ⅱ203 of the eccentric pin structure of the third row installed in the pin limiting hole of the third row is close to the pin limiting hole of the fourth row, the welding pin Ⅱ203 of the eccentric pin structure of the fourth row installed in the pin limiting hole of the fourth row is close to the pin limiting hole of the third row, and the welding pin Ⅱ203 of the eccentric pin structure of the fifth row installed in the pin limiting hole of the fifth row is close to the pin limiting hole of the sixth row.

[0088] For details, please refer to Fig.18 In this embodiment, the limiting portion 204 on the eccentric pin structure 201 is an anti-rotation flattening structure, and thus the second limiting grooves 7021 on the second row of pin limiting holes, the third row of pin limiting holes, the fourth row of pin limiting holes, and the fifth row of pin limiting holes located in the middle area of ​​the seat body are all limiting flattening grooves that are compatible with the aforementioned anti-rotation flattening structure.

[0089] For details, please refer to Fig.24 In this embodiment, positioning holes 403 are respectively provided at the left and right ends of the transfer printed circuit board 40, and a welding positioning column 705 is convexly provided on the wall surface of the seat body located on the other side of the welding chamber along the plug-in and pull-out direction, which is used to plug and cooperate with the aforementioned positioning holes to quickly install the transfer printed circuit board into the welding chamber.

[0090] For details, please refer to Fig.24In this embodiment, the left end of the seat body 70 is provided with a third large keyway 7061, and the right end is provided with a third small keyway 7062. In this embodiment, the positioning insulator 50 is quickly installed into the welding chamber through the snap-fitting of the large convex key and the third large keyway, and the snap-fitting of the small convex key and the third small keyway.

[0091] For details, please refer to Fig.24 In this embodiment, the welding chamber 701 is provided with second notches 7012 on both sides along the front-to-back direction. By means of the second notches, the welding pins I distributed in the same plane on the same row of elastic terminals and the surface mount pads distributed in rows on the transfer printed circuit board can be efficiently welded.

[0092] Specifically, a second guiding surface is provided at the entrance of the pin limiting hole 702 in this embodiment.

[0093] Based on the aforementioned pin welding fixture, this embodiment further provides a method for manufacturing a contact component, including:

[0094] (1) Installing a plurality of eccentric pin structures and bent pin structures into the pin limiting holes on the seat body;

[0095] Specifically: In this embodiment, a plurality of eccentric pin structures are installed into the second row of pin limiting holes, the third row of pin limiting holes, the fourth row of pin limiting holes, and the fifth row of pin limiting holes located in the middle area of ​​the seat body, and a plurality of bent pin structures are installed into the first row of pin limiting holes and the sixth row of pin limiting holes located on the edge side of the seat body, and the bent sections of each bent pin structure are placed in the corresponding welding limiting grooves;

[0096] (2) The transfer printed circuit board is installed into the welding chamber of the seat body, and the welding pins of the eccentric pin structure and the bent pin structure are placed in the corresponding via pads, and the pin structure and the transfer printed circuit board are welded using a common welding process (such as manual welding, reflow welding, etc.);

[0097] Specifically: in this embodiment, when the transfer printed circuit board is installed in the welding chamber of the seat body, the positioning is achieved by plugging and fitting the welding positioning column and the positioning hole;

[0098] (3) Install the positioning insulator of the elastic terminal component into the welding chamber of the seat body, and use a common welding process (such as manual pull welding) to weld the welding pins I of the same row of welding terminals and the surface mount pads distributed in rows on the transfer printed circuit board;

[0099] Specifically: in this embodiment, when the positioning insulator is installed in the welding chamber of the seat body, the positioning is achieved by the snap fit between the large convex key and the third large key groove, and the snap fit between the small convex key and the third small key groove;

[0100] (4) Remove the soldered pin structure, transfer printed circuit board, and elastic terminal components from the tooling to obtain the contact components.

[0101] When the contact component obtained by means of the aforementioned bonding tooling and fixing tooling is installed into the installation groove 304 of the aforementioned insulator 30, considering that the multiple pin structures are asymmetrically distributed and the left end of the insulator is provided with a large key groove 3071 for snap-fitting with the large convex key 5021, and the right end is provided with a small key groove 3072 for snap-fitting with the small convex key 5022, the contact component can be accurately installed in the insulator at one time; at the same time, a third guide surface (such as a guiding slope) is provided at the entrance of the pin mounting hole 305 on the insulator, so that multiple pin structures can be quickly installed into the corresponding pin mounting holes. After the contact component is installed as a whole into the installation groove of the insulator, since the gap between the installation groove (i.e., the glue pouring cavity) formed by the wall of the insulator and the contact component is small, in order to ensure that the glue can fill all the gaps during glue pouring, this embodiment adopts the following design: Please refer to Fig. 27 A plurality of glue penetration holes 503 distributed along the left-right direction are arranged on the positioning insulator 50 located between the two rows of positioning grooves. The glue penetration holes 503 penetrate the wall thickness of the positioning insulator 50, and the positioning insulator 50 and the transfer printed circuit board 40 are spaced apart and there is a chamber 309 between the two. There are glue penetration seams 310 extending along the left-right direction between the front and rear edges of the transfer printed circuit board 40 and the inner wall of the insulator, respectively. When pouring glue into the installation groove of the insulator, considering that the gap size between the two adjacent connecting sections at the lower part of the elastic terminal is small, the glue liquid flows from the gap between the two adjacent connecting sections to the insulator. The rate of penetration on both sides in the width direction is very slow. In order to improve the efficiency of glue filling, on the one hand, glue filling can be carried out from the top of the positioning insulator 50, and the glue liquid flows into the cavity 309 between the positioning insulator and the transfer printed circuit board through the multiple glue penetration holes 503 on the positioning insulator. On the other hand, glue filling operation is carried out simultaneously to the glue filling space G located on the front and rear sides of the positioning insulator. The glue filling space is located in the installation groove and is surrounded by the transfer printed circuit board 40, the positioning insulator 50 and the inner wall of the insulator on the corresponding side. The glue liquid in the glue filling space flows into the gaps / spaces between the transfer printed circuit board and the insulator through the glue penetration seam 309 (please refer to Fig. 27 ), thereby smoothly filling into various gaps between the contact component and the insulator. With the aforementioned design, although the overall size of the connector is compact, the width is small, and there are many gaps between the contact component and the insulator, this embodiment can ensure that the glue is smoothly filled into various gaps between the contact component and the insulator by designing the glue penetration holes and glue penetration seams. At the same time, after the contact component is installed into the insulator as an integral component at one time, only one glue filling process is required to achieve the installation and fixation of the contact component and the insulator, which has high assembly efficiency and good processability.

[0102] Based on the aforementioned bonding tooling and welding fixing tooling, this embodiment also proposes a method for producing a connector, including: using a bonding tooling to manufacture an elastic terminal component, using a pin welding fixing tooling to manufacture a contact component, and finally installing the contact component into the mounting groove of the insulator at one time and then filling it with glue.

[0103] In other embodiments of the utility model, other types of anti-misinstallation structures can be used to replace the large and small convex keys on the two ends of the positioning insulator in this embodiment. For example, a first convex block with a triangular cross-section is set at the left end of the positioning insulator, and a second convex block with a square cross-section is set at the right end. The left ends of the insulator and the seat are both provided with a first groove that is compatible with the aforementioned first convex block, and the right ends are both provided with a second groove that is compatible with the aforementioned second convex block.

[0104] In other embodiments of the present invention, the limiting portion of the eccentric pin structure may adopt other types of anti-rotation structures (for example, semicircular structure, polygonal structure) to replace the anti-rotation flat structure adopted by the limiting portion in the present embodiment.

[0105] In other embodiments of the utility model, the guide block may only cover the second row of pin mounting holes and the fifth row of pin mounting holes, and an inclined extending limiting support groove with at least one end open is provided between two adjacent pin mounting holes in the second row and between two adjacent pin mounting holes in the fifth row. By placing the bent section in the limiting support groove, the welding pins of the bent pin structure can still be guided to the middle area of ​​the insulator.

[0106] In other embodiments of the utility model, two rows of guide plates distributed along the left and right directions may be symmetrically arranged on the wall surface of the insulator away from the plug-in end, one row of guide plates is staggered with the second row of pin installation holes, and the other row of guide plates is staggered with the fifth row of pin installation holes. The cross section of each guide plate is U-shaped so that the cavity inside it constitutes a limit support groove. The opening of each guide plate faces a corresponding pin installation hole on the edge side, and its end is located in the middle area of ​​the insulator. In addition, in order to ensure the consistency of assembly, two rows of welding guide plates distributed along the left and right directions are also symmetrically arranged on the wall surface of the seat body located on the other side of the welding chamber along the plug-in direction. The structure and distribution form of the welding guide plates should be consistent with the aforementioned guide plates.

[0107] In other embodiments of the present invention, the limit support groove can vertically pass through between two adjacent pin installation holes in the ②th row and the ⑤th row.

[0108] In other embodiments of the utility model, when the spacing between two adjacent pin mounting holes in the same row is sufficient, the six rows of pin mounting holes can be aligned and equidistantly arranged (that is, two adjacent rows of pin mounting holes are aligned, the spacing between two adjacent rows of pin mounting holes is consistent, and the spacing between two adjacent pin mounting holes in the same row is consistent), and the limiting support groove obliquely passes through two adjacent pin mounting holes in the ②th row and the ⑤th row.

[0109] In other embodiments of the utility model, the number of pin mounting holes on the insulator can be adjusted according to the actual needs of signal transmission, and the following should be met: the pin mounting holes in the same row located on the front and rear edge sides and distributed along the left and right directions are used to install the bent pin structure, the pin mounting holes in the same row located in the middle area (i.e. the area between the front and rear edge sides) and distributed along the left and right directions are used to install the eccentric pin structure, and a welding support groove is provided between two adjacent pin mounting holes in a row of pin mounting holes adjacent to the bent pin structure in the same row, for inserting the bent section of the bent pin structure to guide the welding pin II of the bent pin structure to the middle area of ​​the insulator. In addition, in order to ensure the consistency of assembly, the same number and the same distribution form of pin limiting holes are also provided on the wall surface of the seat body located on the other side of the welding chamber along the plug-in and pull-out direction.

[0110] In other embodiments of the utility model, the front and rear edges of the transfer printed circuit board respectively contact the inner wall of the insulator. At this time, a plurality of second glue seepage holes (for example, circumferentially continuous strip glue seepage holes, and U-shaped glue seepage holes that are open on one side close to the inner wall of the insulator) are opened along the left and right directions on the front and rear edge sides of the transfer printed circuit board to replace the glue seepage seams, allowing the glue in the glue filling space to flow from the second glue seepage holes into the area between the transfer printed circuit board and the insulator for filling.

[0111] In other embodiments of the utility model, if the gap size between two adjacent connecting sections at the bottom of the elastic terminal is large, the glue seepage hole on the positioning insulator can be omitted. After glue is poured into the two glue filling spaces, part of the glue flows into the cavity between the positioning insulator and the transfer printed circuit board through the gap between the two adjacent connecting sections, and the other part of the glue flows into the various gaps between the transfer printed circuit board and the insulator through the glue seepage seam or the second glue seepage hole.

[0112] In other embodiments of the utility model, a forced installation structure (for example, a card point structure or a barb structure provided on the outer wall of the main body of the pin structure) is provided on the pin structure, and the pin structure is installed into the pin mounting hole on the insulator by forced installation. At this time, glue does not need to be poured into the mounting groove of the insulator.

[0113] In other embodiments of the utility model, the connecting section of the elastic terminal can be bent 90° to form a welding pin I extending along the plug-in and pull-out direction. At this time, a plurality of welding pins I distributed in the same plane can be directly welded and connected to the corresponding pin structure, and then the aforementioned elastic terminal component and the pin structure are installed in an insulator, thereby obtaining another embodiment of a connector using the aforementioned elastic terminal component.

[0114] In other embodiments of the utility model, only an eccentric pin structure may be used. In this case, the two rows of welding pins I of the elastic terminal component are respectively welded to the surface mount pads on the two edge sides of the transfer printed circuit board, and the welding pins II of the eccentric pin structure are welded to the via pads on the transfer printed circuit board. Then, the eccentric pin structure, the transfer printed circuit board and the elastic terminal component welded together are installed in an insulator, thereby obtaining another embodiment of a connector using a contact component.

[0115] In other embodiments of the utility model, only an eccentric pin structure may be used, and two symmetrically distributed rows of surface mount pads are arranged on the transfer printed board, and through-hole pads are arranged on the transfer printed board between the two rows of surface mount pads and on the transfer printed board located outside a row of surface mount pads. At this time, the two rows of welding pins I of the elastic terminal component are respectively welded to the two rows of surface mount pads on the transfer printed board, and the welding pins II of the eccentric pin structure are welded to the through-hole pads on the transfer printed board, and then the eccentric pin structure, the transfer printed board and the elastic terminal component welded together are installed in an insulator, thereby obtaining another embodiment of a connector using a contact component.

[0116] In other embodiments of the present invention, a common pin structure (ie, the axis of the welding pin II of the pin structure is in a straight line with the axis of the pin structure) may be used to replace the eccentric pin structure in the aforementioned embodiment.

[0117] In other embodiments of the utility model, other types of printed circuit board connection ends may be used to replace the welding pin II of the pin structure in the aforementioned embodiment, such as a fisheye terminal. In this case, the fisheye terminal and the via pad on the adapter printed circuit board are connected by solder-free crimping, thereby achieving conduction between the pin structure and the adapter printed circuit board.

[0118] In other embodiments of the utility model, another type of plug-in terminal may be used: the socket structure replaces the pin structure in the aforementioned embodiment, and thus another type of plug-in terminal mounting hole should be provided on the insulator located on one side of the mounting groove along the plug-in direction: the socket mounting hole replaces the pin mounting hole in the present embodiment, and another type of plug-in terminal limiting hole is provided on the seat located on the other side of the welding chamber along the plug-in direction: the socket limiting hole replaces the pin limiting hole in the present embodiment.

[0119] The above is only a preferred embodiment of the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, makes any simple modifications, equivalent changes and modifications to the above embodiments based on the technical essence of the present invention, which still fall within the scope of the technical solution of the present invention.

Claims

1. A pin welding fixture, characterized in that The invention comprises a seat body (70) whose length extends in the left-right direction, a welding chamber (701) being provided inside the seat body and a first notch (7011) being provided on one side of the welding chamber along the plugging and unplugging direction, a plurality of rows of plug-in terminal limiting holes distributed in the left-right direction being arranged in parallel in the front-to-back direction on the seat body located on the other side of the welding chamber along the plugging and unplugging direction, a plurality of welding limiting grooves (703) being arranged in an alternating manner on a row of plug-in terminal limiting holes adjacent to the plug-in terminal limiting holes located on the front and rear edge sides, and an opening of each welding limiting groove faces a corresponding plug-in terminal mounting hole on the adjacent edge side and a terminal end thereof being located in the middle area of ​​the seat body.

2. The pin welding fixture according to claim 1, characterized in that A second limiting groove (7021) with an anti-rotation structure is arranged on the limiting hole of the plug-in terminal located in the middle area of ​​the seat body.

3. The pin welding fixture according to claim 1, characterized in that A second guiding surface is arranged at the entrance of the limiting hole of the plug-in terminal.

4. The pin welding fixture according to claim 1, characterized in that A welding guide block (704) is protruded on the seat body located at the other side of the welding chamber along the plugging and unplugging direction and covers the multiple rows of plug-in terminal limiting holes located in the middle area. The front and rear sides of the welding guide block are respectively provided with welding limiting grooves (703) distributed along the left and right directions.

5. The pin welding fixture according to claim 1, characterized in that The plug-in terminal limiting holes located on the front and rear edge sides are staggered with an adjacent row of plug-in terminal limiting holes, and the welding limiting groove (703) passes obliquely between two adjacent plug-in terminal limiting holes in the same row.

6. The pin welding fixture according to claim 1, characterized in that The left and right sides of the seat body (70) located at the other side of the welding chamber along the plugging and unplugging direction are respectively provided with welding positioning columns (705) for plugging and matching with the positioning holes at the two ends of the transfer printed circuit board.

7. The pin welding fixture according to claim 1, characterized in that The left and right ends of the seat body (70) are respectively provided with matching anti-misinstallation structures for matching with the anti-misinstallation structures at the two ends of the positioning insulator.

8. The pin welding fixture according to claim 1, characterized in that The welding chamber (701) is provided with second notches (7012) on both sides along the front-to-back direction.

9. The pin welding fixture according to claim 1, characterized in that Six rows of plug-in terminal limiting holes distributed in the left-right direction are arranged in parallel on the seat body (70) located on the other side of the welding chamber along the plug-in and pull-out direction along the front-to-back direction, wherein the first row of plug-in terminal limiting holes and the sixth row of plug-in terminal limiting holes are respectively located on the front and rear edge sides of the seat body, the second row of plug-in terminal limiting holes, the third row of plug-in terminal limiting holes, the fourth row of plug-in terminal limiting holes, and the fifth row of plug-in terminal limiting holes are all located in the middle area of ​​the seat body, the first row of plug-in terminal limiting holes and the second row of plug-in terminal limiting holes are staggered, and the sixth row of plug-in terminal limiting holes and the fifth row of plug-in terminal limiting holes are staggered; the second row of plug-in terminal limiting holes and the fifth row of plug-in terminal limiting holes are staggered. A plurality of welding limit grooves (703) are provided, wherein the plurality of welding limit grooves in one row are respectively obliquely passed through between two adjacent plug-in terminal limit holes in the second row, and the opening of each welding limit groove faces a corresponding plug-in terminal mounting hole in the first row, and the end thereof is located at the center position between the plug-in terminal limit holes in the second row and the plug-in terminal limit holes in the third row; and the plurality of welding limit grooves in another row are respectively obliquely passed through between two adjacent plug-in terminal limit holes in the fifth row, and the opening of each welding limit groove faces a corresponding plug-in terminal mounting hole in the sixth row, and the end thereof is located at the center position between the plug-in terminal limit holes in the fourth row and the plug-in terminal limit holes in the fifth row.

10. A pin welding fixture according to any one of claims 1 to 9, characterized in that The plug-in terminal limiting hole is a pin limiting hole (702).

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