A wire board connector

Abstract

The application relates to the technical field of electronic devices, and provides a wire board connector which comprises a metal shell, a terminal assembly assembled in the metal shell, and a cable connected with the terminal assembly, wherein the metal shell is provided with a mounting portion and a matching portion formed on both sides of the mounting portion; the mounting portion is provided with a receiving cavity for adapting the terminal assembly; the terminal assembly comprises a terminal; the terminal is provided with an elastic portion and a wiring portion; the elastic portion is exposed to the lower surface of the mounting portion and abuts against a circuit board; and the wiring portion is exposed to the upper surface of the mounting portion and connected with the cable. Through the modular design, the technical problem that a high-speed and high-transmission-rate wire board connector with compact structure is difficult to manufacture is solved, the modular automatic mechanism manufacturing is realized, and good effects of quality improvement, yield increase and capacity expansion are achieved.

Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and in particular to a wire board connector. Background Technology

[0002] In existing technologies, one approach to connect two circuit boards via cables and transmit high-speed signals is to establish a connection between one end of the cable and the mounting circuit board, while the other end of the cable, not limited to using a different connector (similar to an adapter connector), is used to mount another circuit board. This connection method often involves a plug-in connector (such as a socket) on the board end and connectors (such as male connectors) that are compatible with the female connectors on the board end (such as both ends of the cable) on the cable end. Communication transmission is established by the male connectors on both ends of the cable being adapted to the female connectors on the two boards. Another approach is to directly insert a connection module on one board into a connection module on the other board (i.e., a board-to-board connector) to establish signal transmission. However, both methods have their advantages and disadvantages. The most typical disadvantage is that the former, cable connection, inevitably leads to a larger overall size and more assembly when the male connector is matched with the socket. The crosstalk formed by the combination is large, which cannot be miniaturized and is not conducive to cost considerations. At the same time, it is difficult to guarantee the signal effect. The latter, board-to-board connector, is a cableless direct connection between two circuit boards for communication. Although the transmission effect is good, the processing cost of board-to-board connectors is extremely high, and unlike wire-to-board connectors, the other end connector (such as an adapter connector) can be freely plugged in.

[0003] The purpose of wire-to-board connectors is to reduce crosstalk between plugs and sockets, while also effectively reducing connector size for miniaturization. Although wire-to-board connectors have existed on the market before, where the contact area of ​​the terminals in the wire-end connector terminal assembly is exposed high on the outside, and communication is achieved by pressing the elastic contacts of the terminals onto the board contact area, the high exposure of the terminals in the terminal assembly makes it difficult to ensure that the elastic contacts are not misaligned if the assembly force is uneven, thus affecting the performance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new type of board connector.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A board connector includes a metal housing, a terminal assembly assembled in the metal housing, and a cable connecting the terminal assembly. The metal housing has a mounting portion and mating portions formed on both sides of the mounting portion. The mounting portion has a receiving cavity for adapting to the terminal assembly. The terminal assembly includes terminals, each terminal having an elastic portion and a wiring portion. The elastic portion is exposed on the lower surface of the mounting portion and abuts against a circuit board, while the wiring portion is exposed on the upper surface of the mounting portion and connects to the cable.

[0007] In this embodiment, preferably: the terminal assembly includes a terminal base, a plurality of terminals and a grounding plate. The terminal base includes a base and a vertical portion. The vertical portion extends upward along the rear edge of the base and has a hollow portion that extends through the front and rear of the vertical portion. The base pad protrudes from the rear edge of the base on the bottom surface of the base and forms a stepped surface on the rear of the vertical portion. The plurality of terminals have the same structure and include signal terminals and grounding terminals arranged in a spaced manner. The grounding plate is provided on the front of the vertical portion in the form of covering the hollow portion and includes a plate body and shielding portions that extend symmetrically on both sides of the plate body to cover the hollow portion, as well as spring arms formed on both sides adjacent to the shielding portions.

[0008] In this embodiment, preferably: the terminal has a fixing part embedded in the vertical part, and the elastic part and the wiring part are respectively vertically connected to the fixing part; the front of the vertical part has a protrusion formed between the hollow part and the two sides, and a recess is provided on the upper and lower sides near the hollow part, the recess is opposite to the grounding terminal fixing part and the grounding terminal fixing part is exposed in the recess; the plate has a rivet hole for the protrusion to fit, the rivet hole and the protrusion interfere to fix the grounding plate and the terminal seat together, and the elastic arm of the grounding plate abuts against the grounding terminal fixing part in the recess, so that the grounding terminals in the terminal assembly form a path through the grounding plate.

[0009] In this embodiment, it is preferred that the enclosure further includes a protective cover for the mounting portion; the receiving cavity includes a front cavity and a rear cavity, the front cavity and the rear cavity form a front side plate, a rear side plate and a central plate between the front and rear side plates formed by the mounting portion, the front side plate, the rear side plate and the central plate are respectively provided with through holes for rivet fitting, the protective cover has rivets and fits with the through holes through the rivets, so that the protective cover is integrated with the metal shell.

[0010] In this embodiment, preferably: the upper surface of the mounting part includes a first plane and a second plane forming a height difference, the front cavity and the front side plate are located on the first plane, a terminal assembly is provided in the front cavity, a first wire groove is provided on the first plane of the front side plate, and the first wire groove limits the cable connected to the terminal assembly of the front cavity; the rear cavity, the rear side plate and the center plate are located on the second plane, a second wire groove is provided on the second plane of the center plate, and the second wire groove limits the cable connected to the terminal assembly of the rear cavity.

[0011] Preferably, in this embodiment, a limiting member is further included, the elastic part extends into the contact part, the contact part has a free end, the limiting member is a strip plate, the strip plate has a through hole with opposite perforations and a plurality of teeth are formed on one long side, the rivets on the protective cover are riveted to the through hole through the perforation and the strip plate is fixed to the lower surface of the mounting part; a limiting groove is formed between adjacent teeth for the free end of the contact part to be adapted.

[0012] In this embodiment, it is preferred to further include a pressure strip formed of flexible insulating material, which is pressed onto the wiring portion and the cable connected to the wiring portion and clamped between the protective cover and the metal shell.

[0013] In this embodiment, preferably, the circuit board has a patch, a guide hole, and a locking hole. The patch is arranged in accordance with the number of contact parts in the terminal assembly and in a position relative to the contact parts. The locking hole includes a locking hole on the left side of the patch and a locking hole on the right side of the patch. The guide hole includes a guide hole located outside the left locking hole and a guide hole located outside the right locking hole.

[0014] In this embodiment, preferably, the position angle of the guide hole on the outer side of the left keyhole is not limited to 225°, and the position angle of the guide hole on the outer side of the right keyhole is not limited to 45° in the form of a misalignment with the guide hole on the outer side of the left keyhole.

[0015] In this embodiment, preferably, the lower surface of the mating part is provided with an internal thread relative to the locking hole, and guide posts are provided on both sides of the internal thread for the guide hole to adapt to.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] Through modular design, the technical problem of manufacturing high-speed, high-transmission-rate board connectors with compact structures has been solved, realizing modular automated manufacturing and achieving good results in improving quality, increasing production and expanding capacity. Attached Figure Description

[0018] Figure 1 This is an exploded perspective view of the present invention.

[0019] Figure 2 This is an exploded perspective view of the present invention.

[0020] Figure 3 This is an exploded perspective view of a terminal assembly of the present invention.

[0021] Figure 4 This is an exploded perspective view of a terminal assembly of the present invention.

[0022] Figure 5 This is a perspective view of a terminal component assembled according to the present invention.

[0023] Figure 6 This is a perspective view of the protective component and two terminal assemblies of the present invention arranged side by side.

[0024] Figure 7 yes Figure 6 A stereoscopic view from another perspective.

[0025] Figure 8 This is a three-dimensional view of the metal shell of the present invention.

[0026] Figure 9 yes Figure 8 A stereoscopic view from another perspective.

[0027] Figure 10 This is a perspective view of the structure of the present invention without the protective cover.

[0028] Figure 11 yes Figure 10 A diagram showing the view from above.

[0029] Figure 12 yes Figure 11 Cross-sectional view along the A-A direction.

[0030] Figure 13 yes Figure 11 A stereoscopic view from another perspective.

[0031] Figure 14 This is a three-dimensional view of the assembled version of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 100 Wire board connector, 1 Terminal assembly, 11 Terminal base, 111 Base, 112 Vertical part, 113 Hollowed-out part, 114 Protrusion, 115 Recess, 116 Base pad, 12 Terminal, 121 Fixing part, 122 Elastic part, 123 Abutting part, 124 Wiring part, 13 Grounding piece, 131 Board body, 132 Rivet hole, 133 Shielding part, 134 Spring arm, 2 Metal shell, 21 Mounting part, 211 First plane, 212 Second plane, 22 Mating part, 221 Guide post, 222 Internal thread, 23 Receiving cavity, 24 Through hole, 3 Limiting member, 31 Through hole, 32 Toothed part, 33 Limiting groove, 4 Pressure strip, 5 Protective cover, 51 Open groove, 6 Rivet, 7 Cable, 71 Core wire, 8 Circuit board, 81 Patch, 82 Guide hole, 83 Locking hole. Detailed Implementation

[0033] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0034] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0035] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0036] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0037] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0038] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0040] In this embodiment, as Figure 1 , Figure 2 As shown in the figure, a board connector 100 is provided, including: a terminal assembly 1, a metal shell 2 for assembling the terminal assembly 1, a limiting member 3 connected to the terminal assembly 1, a pressure strip 4 pressing against the connection position between the terminal assembly 1 and the cable 7 and having a protective function, and a protective cover 5 combined with the metal shell 2 and encapsulating the mounting portion. The protective cover 5 is secured to the metal shell 2 by a rivet 6. In this example, the board connector 100 is pressed onto the circuit board 8 to achieve signal transmission. Figure 14 (As shown).

[0041] In this embodiment, as Figures 1 to 5In the figure, the terminal assembly 1 of the board connector 100 consists of multiple sets, preferably four sets in this example. Each terminal assembly 1 includes a terminal base 11, a plurality of terminals 12, and a grounding piece 13. The plurality of terminals 12 are integrally formed by the terminal base 11 through a molding process. Each terminal includes a fixing part 121 and an elastic part 122 and a wiring part 124 that are perpendicularly connected to both ends of the fixing part. The elastic part 122 extends into a contact part 123, and the contact part 123 has a free end. The fixing part 121 is embedded in the terminal base through molding, so that the elastic part 122 and the wiring part 124 are exposed outside the terminal base 11, and the wiring part 124 and the contact part 123 are both perpendicular to the fixing part 121 on the same plane. The terminal block 11 includes a base 111 and a vertical part 112. The vertical part extends upward from the rear edge of the base 111 and embeds the terminals within the body. The vertical part 112 forms a hollow part 113 through the front and rear. In this example, two hollow parts 113 are preferred. Protrusions 114 are formed between the rear hollow parts 113 and between the hollow parts 113 and the two sides for fixing the grounding piece 13. The grounding piece 13 covers the hollow parts 113. Recesses 115 that partially expose the fixing part are formed on the upper and lower sides adjacent to the hollow parts 113. The bottom surface of the base 111 is provided with a base pad 116 for positioning the wiring part 124 of a set of terminals 12.

[0042] In this embodiment, as Figure 3 , Figure 5 and Figure 6 In the figure, the grounding plate 13 covers the hollow part 113 and has a plate 131. The plate 131 has rivet holes 132 for the protrusion 114 to fit. The upper and lower sides of the plate 131 form shielding parts 133 in the form of covering the hollow part 113. Each shielding part 133 has a spring arm 134 on both sides opposite to the recess 115. The spring arm 134 abuts against the fixing part 121 of the terminal through the recess 115 and conducts through it, thereby connecting the grounding terminal through the grounding plate 13, thereby effectively improving the shielding effect and reducing external signal interference.

[0043] In this embodiment, as Figure 8 and Figure 9 The metal shell 2 includes a mounting part 21 and mating parts 22 extending from the left and right sides of the mounting part 21. The mounting part 21 is provided with a receiving cavity 23 for fixing the terminal assembly 1. The receiving cavity 23 includes four receiving cavities in two rows. The upper surface of the mounting part 21 has a first plane 211 and a second plane 212. The first plane 211 is lower than the second plane 212. The first and second planes are respectively provided with grooves (not marked) for the core wire 71. Through holes 24 are provided on the lower surface of the mounting part 21 through the inner side of the first and second planes 211 and 212. The left and right mating parts 22 are provided with a pair of guide posts 221 staggered at the side corners. The guide posts 221 play a precise guiding role when the circuit board 8 is installed. Each mating part 22 is provided with an internal thread 222.

[0044] In this embodiment, as Figure 6 , Figure 7 , Figure 10 and Figure 11 In the figure, the terminal assembly 1 is assembled with a metal shell 2 receiving cavity 23. A limiting member 3 is installed on the lower surface of the mounting part 21. The limiting member 3 has a through hole 31 at the position of the through hole 24 of the mounting part 21. The inner side of the limiting member 3 extends a tooth 32 towards the elastic part 122 of the terminal 12 of the terminal assembly 1. The tooth 32 has a plurality of limiting grooves 33 opened relative to each elastic part 122 of the terminal 12. The abutting part 123 formed at the end of the elastic part 122 is located in the limiting groove 33.

[0045] In this embodiment, as Figure 1 , Figure 2 , Figure 12 and Figure 13 The pressure strip 4 in the figure is injection molded. In this example, there are preferably two pressure strips 4, which correspond to the first plane 211 and the second plane 212 of the metal shell 2, respectively, and are used to cover and protect the wiring part 124 and the core wire 71 of the cable 7, thus protecting the core wire of the cable.

[0046] In this embodiment, as Figure 1 , Figure 2 and Figure 14 In the figure, the protective cover 5 is injection molded and has an open groove 51 for fitting the mounting part 21 of the metal shell 2. The upper surface of the mounting part 21 of the metal shell 2 is in contact with the surface of the open groove 51, so that the terminals 12 inside the mounting part 21 are exposed in the open groove. Then, the semi-finished products are fixed together by the rivet 6 through the through hole 2 and into the through hole 24. Figure 14 In this example, the pressure strip is glued to the welded pin (i.e., the part where the connector 124 is connected to the cable) with UV adhesive. When the protective cover 5 is fastened to the metal shell 2, it squeezes the pressure strip 4 to deform it and cover the pin to provide protection.

[0047] In this embodiment, as Figure 1 , Figure 2 , Figure 10 and Figure 11In the diagram, when the board connector 100 is installed with the circuit board 8, the guide post 221 is adapted to the guide hole 82 of the circuit board 8. Because the guide post 221 has a staggered structure design, it can prevent the board connector 100 from being installed in the wrong direction when assembling with the circuit board 8, thus preventing misinstallation of the circuit board 8. The internal thread in the middle of the mating part 22 overlaps with the locking hole 83 of the circuit board 8 on the same line. The circuit board 8 is locked onto the board connector 100 by a rivet structure. At this time, the circuit board 8 is forcibly locked and pressed onto the terminal assembly 1 by the rivet. On the terminal 12 elastic part 122, the end of the elastic part 122 forms an abutment part 123 that abuts against the middle patch 81 on the circuit board 8. The pressure compresses and deforms the elastic part 122 so that the abutment part 123 is located exactly in the limiting groove 33 of the limiting member 3 and the elastic part 122 is controlled to prevent it from moving. This allows the abutment part 123 to accurately mate with the patch 81 on the circuit board 8. This makes it convenient to use the wire board connector 100 and ensures that the wire board connector 100 establishes effective communication transmission with the circuit board.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A board connector, comprising a metal housing, a terminal assembly assembled in the metal housing, a cable connecting the terminal assembly, a protective cover for the encapsulation and mounting portion, and a limiting member, characterized in that: The metal casing has a mounting section and mating sections on both sides. The mounting section has a receiving cavity formed by a front cavity and a rear cavity, with a central plate between the front and rear cavities. The front side plate, rear side plate, and central plate all have through holes. The terminal assembly includes a terminal base, a terminal, and a grounding plate. The terminal base includes a base and a vertical part extending upward along its rear edge. The vertical part has a hollowed-out part that extends from the front to the rear. The bottom surface of the base has a raised base pad forming a stepped surface. The terminal has a fixing part, a flexible part, and a wiring part. The fixing part is embedded in the vertical part, and the flexible part and the wiring part extend vertically backward respectively. The flexible part is exposed. The lower surface of the mounting part is exposed and the free end has a contact part that abuts against the circuit board. The wiring part is exposed on the upper surface of the mounting part and connected to the cable. The grounding plate is provided on the front of the upright part in the form of a cover cutout and includes a plate body, a shielding part that extends symmetrically on both sides of the cover cutout, and a spring arm formed on both sides adjacent to the shielding part. The plate body is fixed to the upright part by interference through the rivet holes. The spring arm abuts against the grounding terminal in the recess of the upright part. The limiting member is fixed to the lower surface of the mounting part by the rivet of the protective cover through the through hole and the through hole. Its teeth form a limiting groove for the contact part to fit.

2. The board connector according to claim 1, characterized in that: The terminals include several terminals with the same structure, and the terminals also include signal terminals and grounding terminals arranged at intervals.

3. The board connector according to claim 2, characterized in that: A protrusion is formed between the hollowed-out portion on the front of the upright part and the two sides, and a recess is provided corresponding to the grounding terminal fixing part, exposing the grounding terminal fixing part in the recess; the grounding piece abuts against the grounding terminal fixing part exposed in the recess through the spring arm, so that a grounding path is formed between the grounding terminals in the terminal assembly.

4. The board connector according to claim 3, characterized in that: The protective cover is encapsulated and installed, and the protective cover is integrated with the metal shell through the rivet adapter through the hole.

5. The board connector according to claim 4, characterized in that: The upper surface of the mounting section includes a first plane and a second plane forming a height difference. The front cavity and the front side plate are located on the first plane. A terminal assembly is provided in the front cavity. A first wire groove is provided on the first plane of the front side plate. The first wire groove limits the cable connected to the terminal assembly of the front cavity. The rear cavity, the rear side plate and the center plate are located on the second plane. A second wire groove is provided on the second plane of the center plate. The second wire groove limits the cable connected to the terminal assembly of the rear cavity.

6. The board connector according to claim 5, characterized in that: The limiting component is a strip-shaped plate with a through hole with opposite perforations, and the teeth are on one long side of the strip-shaped plate.

7. The board connector according to claim 6, characterized in that: It further includes a pressure strip formed of flexible insulating material, which presses against the wiring portion and the cable connected to the wiring portion and clamps between the protective cover and the metal shell.

8. The board connector according to claim 7, characterized in that: The circuit board has a surface mount, guide holes, and locking holes. The surface mount conforms to the number of contact parts in the terminal assembly and is positioned relative to the contact parts. The locking holes include a locking hole on the left side of the surface mount and a locking hole on the right side of the surface mount. The guide holes include a guide hole located outside the left locking hole and a guide hole located outside the right locking hole.

9. The board connector according to claim 8, characterized in that: The position angle of the guide hole on the outside of the left keyhole is not limited to 225°, and the position angle of the guide hole on the outside of the right keyhole is not limited to 45° in the form of a misalignment with the guide hole on the outside of the left keyhole.

10. The board connector according to claim 1, characterized in that: The lower surface of the mating part has an internal thread relative to the locking hole, and guide posts for the guide hole to be adapted are provided on both sides of the internal thread.

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