connector

Abstract

The utility model discloses a kind of connectors, including insulating body and the terminal group of being fixed in insulating body, it is formed with the plug-in space in insulating body, and terminal group includes pin portion extending to the plug-in space outside of insulating body and for welding to circuit board, insulating body includes the bottom shell close to circuit board, the inner surface of bottom shell is equipped with several castle type warping deformation adjusting structures.The utility model sets castle type warping deformation adjusting structure in the bottom shell of connector, when connector injection molding, the flow resistance of injection material can be increased, the flow speed of injection material is appropriately reduced, the flow speed of each area of injection material is balanced, the stress after insulating body molding is reduced, and then the warping degree after insulating body molding is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and specifically relates to a connector. Background Technology

[0002] Connectors are key components in automotive electrical systems used to achieve electrical connections. They are primarily used to transmit current or signals and connect electrical devices. Connectors are now widely used in various systems such as engines, transmissions, body electronics, and vehicle electronics. The performance of connectors directly affects the safety, reliability, and functionality of a vehicle.

[0003] Existing connectors are generally formed by injection molding. During the injection molding process, it is difficult to control the flow rate of the injection material, which makes it impossible to balance the flow rate of the injection material in different areas of the injection mold. This results in a large degree of warping of the connector. When the connector pins are soldered to the circuit board, it is easy to have cold solder joints and empty solder joints, which seriously affects the soldering quality of the connector pins.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a connector that solves the problem of excessive warping in existing connectors.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides a connector for mounting to a circuit board. The connector includes an insulating body and a terminal group fixed within the insulating body. An insertion space is formed within the insulating body. The terminal group includes pins extending beyond the insertion space of the insulating body and used for soldering to the circuit board. The insulating body includes a bottom shell close to the circuit board. A plurality of castle-shaped warp deformation adjustment structures are provided on the inner surface of the bottom shell.

[0007] In one or more embodiments of the present invention, the insulating body further includes a rear housing, the terminal group extends through the rear housing to the outside of the insertion space of the insulating body, one side of the castle-shaped warp deformation adjustment structure extends through the rear housing, and the other side extends through the bottom housing away from the rear housing.

[0008] In one or more embodiments of the present invention, the insulating body further includes a rear housing, the terminal group extends through the rear housing to the outside of the insertion space of the insulating body, and the extension direction of the castle-shaped warping deformation adjustment structure is perpendicular to the plane of the rear housing.

[0009] In one or more embodiments of this utility model, the insulating body further includes side shells connected to two opposite sides of the bottom shell, and a plurality of castle-shaped warping deformation adjustment structures are provided on the inner surface of the bottom shell, with the plurality of castle-shaped warping deformation adjustment structures arranged at intervals between the two side shells.

[0010] In one or more embodiments of this utility model, a relief surface is provided on the inner surface of the bottom shell, and the height of the relief surface gradually decreases in the direction away from the rear shell. The castle-shaped warping deformation adjustment structure is provided on the relief surface.

[0011] In one or more embodiments of this utility model, a recess is provided on the inner surface of the bottom shell, and the bottom wall of the recess forms a clearance surface.

[0012] In one or more embodiments of this utility model, the bottom of the groove of the castle-shaped warping deformation adjustment structure is parallel to the yielding surface.

[0013] In one or more embodiments of this utility model, the yielding surface is set as a plane.

[0014] In one or more embodiments of the present invention, the connector further includes a fixing terminal held within the insulating body and extending at least partially beyond the insulating body, the fixing terminal being used for insertion into a circuit board.

[0015] In one or more embodiments of the present invention, the insulating body further includes side housings connected to two opposite sides of the bottom housing, with fixed terminals held inside the side housings and extending downward to the outside of the side housings.

[0016] Compared with the prior art, the present invention sets a castle-shaped warpage adjustment structure in the bottom shell of the connector, which can increase the resistance of the injection molding material during the injection molding of the connector, appropriately reduce the flow speed of the injection molding material, balance the flow speed of the injection molding material in various areas, reduce the stress of the insulation body after molding, and thus reduce the degree of warpage of the insulation body after molding. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective structural view of the connector in one embodiment of the present invention;

[0019] Figure 2This is a cross-sectional structural diagram of the connector in one embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the connector in one embodiment of the present invention;

[0021] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0022] Figure 5 This is a diagram showing the distribution of detection points of the connector in one embodiment of the present invention;

[0023] Figure 6 This is a graph showing the test results of the connector in one embodiment of the present invention.

[0024] Explanation of main reference numerals: 1. Insulating body, 11. Top shell, 12. Bottom shell, 121. Castle-shaped warping deformation adjustment structure, 122. Yielding surface, 123. Recessed part, 13. Side shell, 14. Rear shell, 2. Terminal group, 21. Pin part, 3. Fixed terminal, 31. Plug-in part. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In one embodiment, reference is made to Figures 1 to 3As shown, this utility model provides a connector for mounting onto a circuit board. The connector includes an insulating body 1, a terminal group 2, and a fixed terminal 3. The terminal group 2 includes an upper row of terminals and a lower row of terminals, both of which are fixed inside the insulating body 1 and extend to the outside of the insulating body 1. The portions of the upper and lower rows of terminals outside the insulating body 1 each have pin portions 21 for soldering to pads on the circuit board. The fixed terminal 3 is fixed inside the insulating body 1 and extends to the outside of the insulating body 1. The portion of the fixed terminal 3 outside the insulating body 1 has a insertion portion 31 for insertion into corresponding holes on the circuit board.

[0029] In one embodiment, reference is made to Figure 1 As shown, the insulating body 1 includes a top housing 11, a bottom housing 12, two side housings 13, and a rear housing 14. The two side housings 13 are located on both sides of the top housing 11 and the bottom housing 12, and connect the top housing 11 and the bottom housing 12. The rear housing 14 connects the top housing 11 and the bottom housing 12, and also connects to the two side housings 13.

[0030] The top housing 11, bottom housing 12, two side housings 13, and a rear housing 14 together enclose a mating space. The terminal group 2 passes through the rear housing 14 and extends to the outside of the mating space of the insulating body 1. The fixed terminal 3 is held inside the side housing 13 and extends downward to the outside of the side housing 13.

[0031] There is a certain height difference between the outer surface of the bottom housing 12 and the soldering surface of the pin portion 21. After the connector is installed on the circuit board, the outer surface of the bottom housing 12 contacts the circuit board and is roughly attached to it. The pin portion 21 is then connected to the solder pads on the circuit board by soldering.

[0032] Multiple castle-shaped warp deformation adjustment structures 121 are provided on the inner surface of the bottom shell 12. Each castle-shaped warp deformation adjustment structure 121 is a groove structure formed by recessing downward from the inner surface of the bottom shell 12. The multiple castle-shaped warp deformation adjustment structures 121 are arranged at equal intervals between the two side shells 13. One side of the castle-shaped warp deformation adjustment structure 121 extends towards the rear shell 14, and the other side extends away from the rear shell 14.

[0033] In the injection molding process of the insulating body 1, in order to form the castle-shaped warp deformation adjustment structure 121, a protruding baffle structure is provided in the part of the injection mold responsible for molding the bottom shell 12. The position and shape of the baffle structure correspond to the position and shape of the castle-shaped warp deformation adjustment structure 121.

[0034] When the side injection molding process is used to injection mold the insulating body 1, the injection material is injected into the injection mold along the side of the injection mold (i.e., along the arrangement direction of each terminal of the upper or lower row of terminals). The baffle structure increases the resistance of the injection material, appropriately reduces the flow speed of the injection material, balances the flow speed of the injection material in each area, reduces the stress of the insulating body 1 after molding, and thus reduces the warpage of the insulating body 1 after molding.

[0035] After the warping of the insulating body 1 is reduced, the gap between the pin portion 21 of the terminal group 2 and the pad can be reduced, thus reducing the probability of cold solder joints and empty solder joints.

[0036] In one embodiment, reference is made to Figure 2 As shown, in order to extend the length of the castle-shaped warp deformation adjustment structure 121 as much as possible, one side of the castle-shaped warp deformation adjustment structure 121 extends through to the rear shell 14, and the other side extends through to the side of the bottom shell 12 away from the rear shell 14.

[0037] Furthermore, the castle-shaped warp deformation adjustment structure 121 extends approximately along a straight line, and the extension direction of the castle-shaped warp deformation adjustment structure 121 is perpendicular to the plane where the rear shell 14 is located.

[0038] In one embodiment, reference is made to Figure 3 and Figure 4 As shown, a clearance surface 122 is provided on the inner surface of the bottom housing 12. The clearance surface 122 is an inclined plane and extends to the side of the bottom housing 12 away from the rear housing 14. The height of the clearance surface 122 gradually decreases in the direction away from the rear housing 14. The clearance surface 122 can serve as a guide and clearance surface to facilitate the quick insertion of the mating portion 31 of other connectors into the mating space of the connector in this embodiment.

[0039] Furthermore, considering that the area of ​​the yielding surface 122 is relatively large in actual practice, occupying most of the inner surface of the bottom shell 12, all the castle-shaped warping deformation adjustment structures 121 can be opened on the yielding surface 122.

[0040] Optionally, the bottom of the groove of the castle-shaped warp deformation adjustment structure 121 is parallel to the relief surface 122, and the groove depth of each area of ​​the castle-shaped warp deformation adjustment structure 121 is equal, so that each area of ​​the baffle structure corresponding to the castle-shaped warp deformation adjustment structure 121 in the injection mold provides approximately the same resistance to the injection material, further balancing the flow speed of the injection material.

[0041] In one embodiment, reference is made to Figure 4As shown, in order to improve the clearance function, a recess 123 is provided on the inner surface of the bottom shell 12, which can provide a certain clearance space. The bottom wall of the recess 123 is also an inclined plane, and the bottom wall of the recess 123 forms a clearance surface 122.

[0042] The warpage of the insulating body 1 of existing connectors is between 0.06 and 0.08 mm, referring to... Figure 5 and Figure 6 As shown, after applying the design scheme of the above embodiment, 20 detection points are set at the upper row of PIN holes of the insulating body 1, and 20 detection points are also set at the lower row of PIN holes. The warpage data of each detection point shows that the maximum warpage of each detection point is controlled within 0.03mm, and the warpage of the insulating body 1 is significantly improved.

[0043] It should be noted that the above embodiments mainly introduce the connector structure obtained by the side injection process. When the end injection process, center injection process, or submerged injection process is used to injection mold the insulating body 1, the position and extension direction of the castle-shaped warp deformation adjustment structure 121 can be adaptively adjusted so that the extension direction of the castle-shaped warp deformation adjustment structure 121 has a certain angle with the flow direction of the injection material, so that it can increase the resistance of the injection material flow, balance the flow speed of the injection material in each area, reduce the stress of the insulating body 1, and reduce the degree of warping of the insulating body 1 after molding.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connector for mounting to a circuit board, characterized in that, The connector includes an insulating body (1) and a terminal group (2) fixed in the insulating body (1). A plug-in space is formed in the insulating body (1). The terminal group (2) includes a pin portion (21) extending out of the plug-in space of the insulating body (1) and used for soldering to a circuit board. The insulating body (1) includes a bottom housing (12) close to the circuit board. A plurality of castle-shaped warp deformation adjustment structures (121) are provided on the inner surface of the bottom housing (12). The castle-shaped warp deformation adjustment structure (121) is a groove structure, which is formed by recessing downward from the inner surface of the bottom housing (12).

2. The connector according to claim 1, characterized in that, The insulating body (1) also includes a rear housing (14), the terminal group (2) extends through the rear housing (14) to the outside of the insertion space of the insulating body (1), and one side of the castle-shaped warp deformation adjustment structure (121) extends through the rear housing (14) and the other side extends through the bottom housing (12) away from the rear housing (14).

3. The connector according to claim 2, characterized in that, The extension direction of the castle-shaped warp deformation adjustment structure (121) is perpendicular to the plane of the rear shell (14).

4. The connector according to claim 1, characterized in that, The insulating body (1) also includes side shells (13) connected to the two opposite sides of the bottom shell (12). The inner surface of the bottom shell (12) is provided with a plurality of castle-shaped warping deformation adjustment structures (121), and the plurality of castle-shaped warping deformation adjustment structures (121) are arranged at intervals between the two side shells (13).

5. The connector according to claim 2, characterized in that, The inner surface of the bottom shell (12) is provided with a relief surface (122). In the direction away from the rear shell (14), the height of the relief surface (122) gradually decreases. The castle-shaped warping deformation adjustment structure (121) is provided on the relief surface (122).

6. The connector according to claim 5, characterized in that, The bottom housing (12) has a recess (123) on its inner surface, and the bottom wall of the recess (123) forms a relief surface (122).

7. The connector according to claim 5, characterized in that, The bottom of the groove of the castle-shaped warping deformation adjustment structure (121) is parallel to the yielding surface (122).

8. The connector according to claim 5, characterized in that, The yielding surface (122) is set as a plane.

9. The connector according to claim 1, characterized in that, The connector further includes a fixing terminal (3) held within the insulating body (1) and extending at least partially outside the insulating body (1), the fixing terminal (3) being used for insertion into a circuit board.

10. The connector according to claim 9, characterized in that, The insulating body (1) also includes side housings (13) connected to the two opposite sides of the bottom housing (12), the fixed terminal (3) is fixed inside the side housing (13) and extends downward to the outside of the side housing (13).

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