Weldable through-cylinder connector

Abstract

The utility model relates to a weldable cylinder penetrating connector. One end of the weldable cylinder-penetrating connector penetrates through an installation hole of a cylinder body, and the weldable cylinder-penetrating connector comprises a connector body which comprises a first connecting part, a locking part and a second connecting part. The locking part is provided with a sealing structure which is connected to the cylinder body in a sealed mode, and the first connecting part and the second connecting part are arranged on the two sides of the locking part respectively. And the terminal is inserted in the connector main body, and the end part of the terminal protrudes out of the first connecting part and / or the second connecting part so as to be welded with an external PCB (Printed Circuit Board). According to the weldable cylinder-penetrating connector provided by the utility model, the connector main body is hermetically and fixedly connected to the cylinder body, and then the terminal penetrates through the connecting part of the connector main body and protrudes out of the connecting part so as to realize direct welding with the external PCB, so that the cylinder-penetrating connector is simpler and more convenient to install, and the cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a weldable cylinder connector. Background Technology

[0002] The cylinder through-hole connector is installed through the cylinder block, with one end located inside the gearbox and the other end extending outside. This allows electrical components inside the gearbox to connect with those in the external control unit via the connector's terminals. This mating between the cylinder through-hole connector and the metal contacts inside the cylinder allows for the transmission of current and signals. Existing cylinder through-hole connectors are mostly plug-in structures that connect to the female connector end, making soldering to the PCB impossible. The female connector end must be connected to one end of the cylinder through-hole connector before being connected to the PCB, resulting in a complex structure and higher material and labor costs. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a weldable cylinder-through connector, which seals and fixes the connector body to the cylinder body, and then passes through the connecting part of the connector body and protrudes from the connecting part to achieve direct welding with the external PCB, making the installation of the cylinder-through connector simpler and saving costs; at the same time, the direct welding method makes the connection stability between the cylinder-through connector and the PCB better.

[0004] A weldable cylinder-through connector, one end of which passes through a mounting hole in the cylinder body, includes:

[0005] The connector body includes a first connecting part, a locking part, and a second connecting part; the locking part is provided with a sealing structure and is sealed to the cylinder body, and the first connecting part and the second connecting part are respectively located on both sides of the locking part;

[0006] Terminals are inserted into the connector body, with their ends protruding from the first connection portion and / or the second connection portion for soldering to an external PCB.

[0007] Furthermore, the first connecting part is provided with a first slot, and the second connecting part is provided with a second slot, the opening directions of the first slot and the second slot are opposite; one end of the terminal is located in the first slot, and the other end protrudes out of the second slot.

[0008] Furthermore, the weldable cylinder connector further includes:

[0009] A guide plate is disposed at the opening of the second slot and fixed to the second slot; the guide plate is provided with terminal holes, and the terminals pass through the terminal holes accordingly.

[0010] Furthermore, the guide plate and the second slot are connected by a snap-fit ​​structure, which includes a snap hook and a latch that can be engaged with each other, one of which is located on the guide plate and the other in the second slot.

[0011] Furthermore, the slot of the second slot extends along the opening direction of the second slot and is provided with a positioning post, and the guide pin plate is provided with a positioning hole, and the positioning post is inserted into the positioning hole.

[0012] Furthermore, the second slot has a square cross-section, and there are at least two positioning posts, which are respectively located at two opposite corners of the second slot.

[0013] Furthermore, the terminal includes a snap-fit ​​portion fixed to the connector body, and a solder portion at least at one end for soldering to an external PCB; the orthographic projection of the snap-fit ​​portion in the vertical cross-section of the terminal completely covers the orthographic projection of the solder portion in the vertical cross-section.

[0014] Furthermore, the welded part is formed by stamping and secondary cutting, and its weld leg size is SQ0.4mm.

[0015] Furthermore, a sealing layer is provided at the bottom of the second tank.

[0016] Furthermore, the weldable cylinder connector further includes:

[0017] The sealing structure includes an annular groove on the outer wall of the second connecting part and a sealing ring fitted on the annular groove; the sealing ring seals against the inner wall of the mounting hole.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) By sealing and fixing the connector body to the cylinder, the terminals pass through the connection part of the connector body and protrude from the connection part to achieve direct soldering to the external PCB;

[0020] (2) The welding part of the terminal is designed for welding connection method, which facilitates insertion and welding;

[0021] (3) The terminals are constrained by setting a guide plate to avoid the terminals from shifting and failing to be inserted into the PCB smoothly;

[0022] (4) The guide pin plate and the connector body are positioned by positioning pins and connected by snap-fit ​​structure, making the overall structure of the cylinder connector simple and easy to assemble.

[0023] (5) By setting a sealing layer to seal the gap between the terminals and the connector body, the sealing performance of the cylinder connector is increased.

[0024] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0025] Figure 1 An exploded view of a weldable cylinder connector provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of a weldable cylinder connector provided in an embodiment of this application;

[0027] Figure 3 Partial cross-sectional view of a weldable cylinder connector provided in an embodiment of this application. Figure 1 ;

[0028] Figure 4 Partial cross-sectional view of a weldable cylinder connector provided in an embodiment of this application. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the terminal structure.

[0030] In the diagram: 10-Connector body; 11-First connecting part; 111-First slot; 1111-Snap-fit ​​boss; 1112-Outer guide rib; 1113-Inner guide rib; 12-Locking part; 121-Connecting hole; 122-Sheath; 123-Cutout groove; 124-Sealing structure; 1241-Annular groove; 1242-Sealing ring; 13-Second connecting part; 131-Second slot; 1311-Positioning post; 1312-Snap-fit; 132-Sealing layer; 20-Terminal; 21-Plug-in part; 22-Snap-fit ​​part; 221-First locking point group; 222-Second locking point group; 23-Welding part; 30-Guide pin plate; 31-Terminal hole; 32-Positioning hole; 33-Hook. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Please see Figure 1 This application provides a solderable cylinder-through connector, one end of which passes through a mounting hole in the cylinder body, such that both ends of the connector are located on the inner and outer sides of the cylinder body, thus achieving a conductive connection between the inside and outside of the cylinder body. The cylinder-through connector includes a connector body 10 and terminals 20. The connector body 10 includes a first connecting portion 11, a locking portion 12, and a second connecting portion 13, with the first connecting portion 11 and the second connecting portion 13 respectively located on both sides of the locking portion 12. The locking portion 12 has a sealing structure 124, which is sealed to the cylinder body. An array of terminals 20 is inserted into the connector body 10, passing through the first connecting portion 11 and the second connecting portion 13, with its ends protruding from the first connecting portion 11 and / or the second connecting portion 13 for soldering to an external PCB.

[0035] The cylinder connector provided in this application embodiment can be directly soldered to an external PCB to replace the traditional method of connecting the female end of the wire, making the installation of the cylinder connector simpler and saving costs; at the same time, the direct soldering method makes the connection stability between the cylinder connector and the PCB better.

[0036] It is understood that the cylinder connector can have one end as a plug-in end for plugging into the female connector and the other end as a solder end for soldering to the PCB; or both ends can be solder ends. Preferably, in this embodiment, the cylinder connector has one end as a plug-in end and the other end as a solder end.

[0037] Please see Figure 3Specifically, in this embodiment, the first connecting part 11 is provided with a first slot 111, and the second connecting part 13 is provided with a second slot 131. The slots of the first slot 111 and the second slot 131 have opposite directions. One end of the terminal 20 is located in the first slot 111 and is inserted into the external female end, while the other end protrudes from the second slot 131 and is soldered to the external PCB.

[0038] Please see Figure 1-4 Furthermore, in some embodiments, the outer wall of the first slot 111 is provided with a snap-fit ​​boss 1111 for snap-fit ​​connection with the female end of the wire. In addition, the outer wall of the first slot 111 is also provided with several outer guide ribs 1112 for positioning the female end of the wire during insertion and for preventing mistake-proofing during the insertion process. At the same time, the several outer guide ribs 1112 can also strengthen the wall of the first slot 111. It is understood that the inner wall of the first slot 111 is also provided with several inner guide ribs 1113 for positioning the female end of the wire during the insertion process.

[0039] Furthermore, in some embodiments, a sealing layer 132 is provided at the bottom of the second slot 131, and the terminal 20 is inserted into the sealing layer 132. The sealing layer 132 is used to fill the connection gap between the terminal 20 and the connector body 10, thereby increasing the sealing performance of the through-cylinder connector. It is understood that the sealing layer 132 can be potted epoxy resin, or other methods that can achieve the same sealing effect.

[0040] Furthermore, in some embodiments, the sealing structure 124 includes an annular groove 1241 provided on the outer wall of the second connecting portion 13, and a sealing ring 1242 sleeved on the annular groove 1241. The sealing ring 1242 seals against the inner wall of the mounting hole to achieve a sealed connection between the cylinder connector and the cylinder body.

[0041] Furthermore, in some embodiments, the locking part 12 is provided with a connecting hole 121 for connecting to the cylinder body. A protective sleeve 122 is provided inside the connecting hole 121 to reduce wear between the connecting hole 121 and the installation position, thereby increasing the strength of the cylinder connector. In addition, the locking part 12 is also provided with multiple hollowed-out grooves 123 to prevent the connector body 10 from shrinking or other defects during injection molding due to excessively thick parts of the adhesive material, while also saving costs.

[0042] Furthermore, in some embodiments, the through-cylinder connector also includes a guide pin plate 30, which is disposed at the slot of the second slot 131 and fixed to the second slot 131. The guide pin plate 30 is provided with a terminal hole 31, through which the terminal 20 passes. The guide pin plate 30 provides secondary constraint on the terminal 20, which can reduce the offset of the soldering end of the terminal 20 and effectively reduce the interference between the terminal 20 and the soldering hole of the PCB board. This allows the terminal 20 to pass through the soldering hole of the PCB board accurately, reducing the occurrence of defects such as bending of the terminal 20 due to misalignment of the soldering hole.

[0043] Furthermore, in some embodiments, the guide plate 30 and the second slot 131 are connected by a snap-fit ​​structure, which includes a hook 33 and a latch 1312 that cooperate with each other, one of which is located on the guide plate 30 and the other in the second slot 131. As a preferred embodiment, a cut is made in the inner wall of the second slot 131 as the latch 1312. Correspondingly, the guide plate 30 is provided with a spring-loaded hook 33 facing the second slot 131. By engaging the hook 33 with the latch 1312, the guide plate 30 abuts against the opening of the second slot 131, thereby fixing the guide plate 30 to the second slot 131.

[0044] Furthermore, in some embodiments, the slot of the second slot 131 extends along the opening direction of the second slot 131 and is provided with a positioning post 1311. The guide pin plate 30 is provided with a positioning hole 32 corresponding to the position of the positioning post 1311. The positioning post 1311 passes through the positioning hole 32 and restricts the translation of the guide pin plate 30 by the positioning post 1311, thereby further fixing the second slot 131 and the guide pin plate 30 relative to each other, so as to avoid the bending of the terminal 20 caused by the guide pin plate 30 being moved by force.

[0045] Furthermore, in some embodiments, the number of positioning posts 1311 is at least two, spaced apart at the opening of the second slot 131, thus limiting the displacement of the guide plate 30 in multiple directions. In this embodiment, when the cross-section of the second slot 131 is square, there are two positioning posts 1311, respectively located at two opposite corners of the second slot 131. This not only limits the translation of the guide plate 30, but also prevents the guide plate 30 from rotating relative to the contact surface between the guide plate 30 and the second slot 131, further ensuring that the terminal 20 is not impacted by external forces. It is understood that there can also be three or more positioning posts 1311, spaced apart at the opening of the second slot 131. When the cross-section of the second slot 131 is circular, the positioning posts 1311 are preferably three spaced apart, thereby limiting the guide plate 30 by the second slot 131.

[0046] Please see 1 and Figure 5Furthermore, in some embodiments, the terminal 20 includes a snap-fit ​​portion 22 fixedly connected to the connector body 10, and a solder portion 23 at least at one end soldered to an external PCB. The orthographic projection of the snap-fit ​​portion 22 in the vertical cross-section of the terminal 20 completely covers the orthographic projection of the solder portion 23 in the vertical cross-section.

[0047] Specifically, the terminal 20 is formed by first passing copper wire through a die, then drawing it into terminals of uniform size, and finally stamping and cutting the part to be welded to form the welding part 23. For example, the copper wire is drawn into a terminal 20 with a size of SQ0.64mm. Then, the upper and lower sides of the end of the terminal 20 used for welding are thinned by strong pressure using a die, and then cut into a welding part 23 with a width of 0.4mm within the die, thereby increasing the voltage withstand performance of the through-cylinder connector. With this setup, the welding size of the terminal 20 is reduced to SQ0.4mm, the welding hole diameter on the external PCB is designed to be 0.8mm, and the electrical clearance between the two pads on the external PCB can be increased from the original 0.68mm to 0.9mm, significantly improving the product's operating voltage range.

[0048] In some other embodiments, a plug-in portion 21 is provided at the end of terminal 20 away from solder portion 23 for plugging into an external female terminal. Both solder portion 23 and plug-in portion 21 are chamfered, making their insertion ends tapered, which facilitates insertion into PCB solder holes and female terminals.

[0049] Furthermore, in some embodiments, the latching portion 22 is provided with a backstop structure to increase the holding force between the terminal 20 and the connector body 10, so as to prevent the terminal 20 from being dislodged from the connector body 10 under force. Specifically, in this embodiment, the backstop structure is a bidirectional backstop structure symmetrically arranged along the length direction of the terminal 20. It includes a first latching point group 221 and a second latching point group 222 that interfere with the connector body 10. The first latching point group 221 and the second latching point group 222 are inclined and symmetrically arranged. The height of the end of the first latching point group 221 and the second latching point group 222 that are close to each other is greater than the height of the end that are far apart from each other. In this way, the terminal 20 will be subjected to resistance from the first latching point group 221 or the second latching point group 222 and the connector body 10 when subjected to force from either end, thus maintaining the stability of the connection between the terminal 20 and the connector body 10.

[0050] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:

[0051] (1) By sealing and fixing the connector body to the cylinder, the terminals pass through the connector body and protrude from the connection part to achieve direct soldering to the external PCB;

[0052] (2) The welding part of the terminal is designed for welding connection method, which facilitates insertion and welding;

[0053] (3) The terminals are constrained by setting a guide plate to avoid the terminals from shifting and failing to be inserted into the PCB smoothly;

[0054] (4) The guide pin plate and the connector body are positioned by positioning pins and connected by snap-fit ​​structure, making the overall structure of the cylinder connector simple and easy to assemble.

[0055] (5) By setting a sealing layer to seal the gap between the terminals and the connector body, the sealing performance of the cylinder connector is increased.

[0056] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A weldable cylinder-through connector, one end of which passes through a mounting hole in the cylinder body, characterized in that, include: The connector body includes a first connecting part, a locking part, and a second connecting part; the locking part is provided with a sealing structure and is sealed to the cylinder body, and the first connecting part and the second connecting part are respectively located on both sides of the locking part; Terminals are inserted into the connector body, with their ends protruding from the first connection portion and / or the second connection portion for soldering to an external PCB.

2. The weldable cylinder connector according to claim 1, characterized in that: The first connecting part is provided with a first slot, and the second connecting part is provided with a second slot. The opening directions of the first slot and the second slot are opposite. One end of the terminal is located in the first slot, and the other end protrudes out of the second slot.

3. A weldable cylinder connector according to claim 2, characterized in that, Also includes: A guide plate is disposed at the opening of the second slot and fixed to the second slot; the guide plate is provided with terminal holes, and the terminals pass through the terminal holes accordingly.

4. A weldable cylinder connector according to claim 3, characterized in that: The guide plate and the second slot are connected by a snap-fit ​​structure, which includes a hook and a latch that can be engaged with each other, one of which is located on the guide plate and the other is located on the second slot.

5. A weldable cylinder connector according to claim 3, characterized in that: The second slot has a positioning post extending along the opening direction of the second slot, and the guide pin plate has a positioning hole, into which the positioning post is inserted.

6. A weldable cylinder connector according to claim 5, characterized in that: The second slot has a square cross-section, and there are at least two positioning posts, which are respectively located at two opposite corners of the second slot.

7. A weldable cylinder connector according to any one of claims 2-6, characterized in that: The terminal includes a snap-fit ​​portion fixed to the connector body, and a solder portion at least at one end for soldering to an external PCB; the orthographic projection of the snap-fit ​​portion in the vertical cross-section of the terminal completely covers the orthographic projection of the solder portion in the vertical cross-section.

8. A weldable cylinder connector according to claim 7, characterized in that: The welded part is formed by stamping and secondary cutting, and its weld leg size is SQ0.4mm.

9. A weldable cylinder connector according to claim 2, characterized in that: The bottom of the second slot is provided with a sealing layer.

10. A weldable cylinder connector according to claim 1, characterized in that, Also includes: The sealing structure includes an annular groove on the outer wall of the second connecting part and a sealing ring fitted on the annular groove; the sealing ring seals against the inner wall of the mounting hole.

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