A modular connector with tensile strength

Abstract

A modular connector with tensile strength includes a positioning frame and a terminal insulator module. The terminal insulator module comprises a terminal insulator and an insulating pressure plate fitted together. The terminal insulator has at least two lower protrusions on its outer side. The corresponding sidewall of the positioning frame has a lower boss that mates with the lower end face of the corresponding lower protrusion for positioning. The insulating pressure plate has at least two upper protrusions on its outer side, with the upper end face of each upper protrusion mates with the lower end face of the upper boss on the corresponding sidewall for positioning. This design solves the problem of the mating surface between the terminal insulator and the insulating pressure plate in modular connectors being unable to withstand tensile stress or impact vibration, resulting in higher reliability and adaptability. It also reduces the connection requirements of the mating surface, thereby lowering production costs.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, and more specifically, relates to a modular connector with anti-pull function. Background Technology

[0002] Modular connectors typically include a plug connector section and a socket connector section that mates with the plug connector section. During the insertion and insertion process of the plug connector section and the socket connector section, the insertion and locking of the two are achieved by rotating screws, levers, clips, screws, etc., thereby firmly connecting the plug connector section and the socket connector section.

[0003] Both the plug connector and the socket connector include a positioning frame (or fixing frame). Multiple modular plug units are installed in the positioning frame of the plug connector, and multiple modular socket units are correspondingly installed in the positioning frame of the socket connector. The plug units and their corresponding socket units combine to form a connector unit for signal transmission. Multiple connector units enable the transmission of different signals (source signals, high and low frequency signals, optical signals, pneumatic signals, fluid signals, etc.). (Plug unit (or socket unit))

[0004] The modular connectors protected in this article refer to the plug connection portion or socket connection portion mentioned above, which can be referred to as plug connectors and socket connectors, respectively. Plug connectors and socket connectors are mutually compatible connectors.

[0005] The terminal carriers (socket terminals, pin terminals, etc.) used for signal transmission in the modular units (socket units or plug units) of this type of modular connector usually need to be wired on-site at the user's location before being installed in the terminal insulator module within the modular unit. Furthermore, because modular connectors require repair and replacement of faulty terminal carriers during prolonged use, the terminal carriers must be removable. If an integrated terminal insulator module is used, the entire modular connector will experience significant movement during terminal removal, potentially damaging it and affecting its normal operation. To reduce the amount of movement during terminal removal, in practical applications, the terminal insulator module is typically made into two independent parts: the terminal insulator and the insulating pressure plate. Terminal positioning claws are installed at the junction of the terminal insulator and the insulating pressure plate.

[0006] Terminal positioning claws are installed in the mounting holes of the insulating pressure plate. The insulating pressure plate is then placed on top of the terminal insulator. Due to space constraints, the terminal insulator and the insulating pressure plate are connected using methods that are not very secure, such as ultrasonic welding or potting, to form a terminal insulator module. The entire terminal insulator module is then installed into the positioning frame. Figure 1 As shown.

[0007] In the prior art, when the terminal insulator module 8' is installed into the positioning frame, the terminal insulator module slides to the inside of the positioning frame via the protrusions 1a on the two guide rails 1' (the two guide rails are set in parallel and spaced apart, thus forming the two side walls of the positioning frame). The upper end face 5a and lower end face 5b of the groove on the terminal insulator 5' are positioned by cooperating with the upper and lower faces of the protrusions 1a on the guide rails. The above solution has the following problems:

[0008] a. After the mating surface between the terminal insulator 5' and the insulating pressure plate 7' cracks after a period of use, the terminal will detach from the terminal insulator 5' along with the insulating pressure plate 7':

[0009] After the terminal insulator module is installed with the connected wires, the wires are integrated into a cable. During use, the cable is inevitably subjected to stress, and with the occurrence of impact and vibration, the cable will exert a pulling force on the terminal. The terminal is positioned by the terminal positioning claw, and the pulling force will be transmitted to the insulating pressure plate through the terminal positioning claw. Since the positioning surfaces of the fixed terminal insulator module are all on the terminal insulator 5', the insulating pressure plate 7' can only resist impact, vibration and direct pulling force through the bonding force of the joint surface of ultrasonic welding or adhesive. Over time, the terminal insulator 5' and the insulating pressure plate 7' will crack, causing the terminal and the insulating pressure plate 7' to fall off.

[0010] b. Due to the existence of problem a, the requirements for the consistency of ultrasonic or adhesive connection quality are very high, which is not conducive to mass production and results in high production control costs.

[0011] Since the insulating pressure plate 7' is fixed to the terminal insulator only by ultrasonic welding or adhesive, the requirements for the consistency of ultrasonic welding quality, the consistency of adhesive quality, and how to test them are relatively high, making mass production control difficult. Furthermore, there is still a risk of cracking and falling off when the modular connector is used improperly. Summary of the Invention

[0012] The purpose of this invention is to provide a modular connector with anti-pull function.

[0013] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a modular connector with anti-pull function, comprising a positioning frame and a terminal insulator module, wherein the terminal insulator module comprises a terminal insulator and an insulating pressure plate assembled together, the outer side of the terminal insulator is provided with at least two lower protrusions, and the corresponding side wall of the positioning frame is provided with a lower boss that mates with the lower end face of the corresponding lower protrusion for positioning; the outer side of the insulating pressure plate is provided with at least two upper protrusions, and the upper end face of the upper protrusion mates with the lower end face of the upper boss provided on the corresponding side wall for positioning.

[0014] Furthermore, the lower protrusion of the terminal insulator is disposed near the lower end surface of the terminal insulator, and there is a distance between the lower protrusion and the lower end surface of the terminal insulator; the upper protrusion of the insulating pressure plate is disposed near the lower end surface of the insulating pressure plate, and there is a distance between the upper protrusion and the lower end surface of the insulating pressure plate.

[0015] Furthermore, the upper part of the terminal insulator is provided with an installation step, and a columnar body is provided on the installation step. The columnar body is provided with a lower installation hole that penetrates the terminal insulator. The insulating pressure plate is provided with an upper installation hole corresponding to the lower installation hole. The lower part of the upper installation hole is fitted onto the outside of the columnar body, and a terminal positioning claw is provided inside the upper installation hole.

[0016] Furthermore, a positioning step is provided at the connection between the columnar body and the mounting step, and a countersunk section is provided in the upper mounting hole to cooperate with the positioning step for installation.

[0017] Furthermore, when the terminal insulator is assembled with the insulating pressure plate, the mounting step of the terminal insulator fits against the lower end face of the insulating pressure plate to form a mounting mating surface, which is located between the upper boss and the lower boss inside the positioning frame.

[0018] Furthermore, the positioning frame also includes stops located at both ends of the two side walls and fixedly connected to the side walls.

[0019] Furthermore, an intermediate boss is provided on the two side walls at the position between the upper boss and the lower boss for connecting and installing with the stop block. The intermediate boss is provided with a threaded hole, which is used to connect with a connecting bolt to realize the installation of the intermediate boss and the stop block.

[0020] Furthermore, the lower end face of the lower boss is flush with the lower end face of the corresponding side wall, or / and the upper end face of the upper boss is flush with the upper end face of the corresponding side wall.

[0021] Furthermore, the lower end face of the lower boss is flush with the lower end faces of the two stops, or / and the upper end face of the upper boss is flush with the upper end faces of the two stops.

[0022] Furthermore, the stop block can be used to fix two connectors that are mutually adapted and locked with the adapter connector by screws.

[0023] Furthermore, the stop block is provided with a positioning post or positioning hole, which can be installed in conjunction with the corresponding positioning hole or positioning post on the adapter connector.

[0024] Beneficial effects:

[0025] According to the present invention, by providing a lower protrusion on the terminal insulator in the terminal insulator module to cooperate with the lower boss on the side wall of the positioning frame for positioning; and simultaneously providing an upper protrusion on the insulating pressure plate to cooperate with the upper boss on the side wall of the positioning frame for positioning, the pulling of the wire on the contact terminal during the use of the modular connector will not be transmitted to the joint surface between the terminal insulator and the insulating pressure plate through the terminal positioning claw. This solves the technical problem that the plug unit and socket unit in the modular connector are prone to detaching at the joint surface between the terminal insulator and the insulating pressure plate, and are not resistant to pulling or impact vibration, thus making the product highly reliable and more adaptable.

[0026] Because the requirements for the connection between the terminal insulator and the insulating pressure plate are reduced after adopting this invention, the requirements for ultrasonic welding and adhesive bonding are reduced, as are the requirements for inspection, which is conducive to mass production and reduces production costs.

[0027] According to the present invention, both socket connectors and plug connectors can adopt the technical solution of the present invention. That is to say, both plug units and socket units can adopt the same terminal insulator module structure, thereby ensuring the interchangeability of terminal insulator module installation, thereby improving the installation efficiency of modular connectors and further reducing production costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the installation structure of the terminal insulator module and the positioning frame of a modular connector in the prior art.

[0029] Figure 2 This is an exploded structural diagram of the terminal insulator module in an embodiment of the present invention.

[0030] Figure 3 for Figure 2 A schematic diagram of the overall structure of the middle terminal insulator module.

[0031] Figure 4 For: in Figure 3 The diagram shows the process of inserting pin terminals into the terminal insulator module to form a plug unit.

[0032] Figure 5 For: in Figure 3 The diagram shows the process of inserting socket terminals into the terminal insulator module to form a socket unit.

[0033] Figure 6 This is a schematic diagram of the exploded structure of the positioning frame.

[0034] Figure 7 This is an exploded view of two mutually compatible module connectors with anti-pull functionality.

[0035] Figure 8This is a cross-sectional view of the module connector of the present invention (the figure shows the installation structure of the terminal insulator module and the positioning frame).

[0036] Figure 9 This is a schematic diagram of two mutually compatible module connectors with anti-pull function.

[0037] Figure 10 Another form of terminal insulator module (and) Figure 2 The main difference between the embodiments shown is the number of terminal mounting holes.

[0038] In the diagram, A is the plug connector, B is the socket connector, 1 is the side wall, 101 is the lower boss, 102 is the upper boss, 102a is the lower end face of the upper boss, 103 is the middle boss, 103a is the threaded hole, 2 is the terminal post, 3 is the stop block, 4 is the positioning post, 5 is the terminal insulator, 5a is the lower end face of the terminal insulator, 501 is the lower protrusion, 501a is the lower end face of the lower protrusion, 502 is the mounting step, and 503 is the columnar body. 504. Lower mounting hole; 505. Positioning step; 6. Positioning claw; 7. Insulating pressure plate; 7a. Lower end face of insulating pressure plate; 701. Upper protrusion; 701a. Upper end face of upper protrusion; 702. Countersunk section; 703. Upper mounting hole; 8. Terminal insulator module; 9. Pin terminal; 10. Plug unit; 11. Socket terminal; 12. Socket unit; 13. Mounting mating surface; 14. Connecting bolt; 15. Positioning hole. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0040] like Figure 8 As shown, a modular connector with anti-pull function includes a positioning frame 1, and a terminal insulator module 8 is installed in cooperation with the positioning frame 1.

[0041] See Figure 2 , Figure 3 As shown, the terminal insulator module 8 includes a terminal insulator 5 and an insulating pressure plate 7. Two lower protrusions 501 are symmetrically arranged on the lower outer side of the terminal insulator 5. Lower bosses 101 are provided on the two corresponding side walls 1 of the positioning frame, which are positioned in conjunction with the lower end faces 501a of the corresponding lower protrusions. Two upper protrusions 701 are symmetrically arranged on the lower outer side of the insulating pressure plate 7. The upper end faces 701a of the upper protrusions are positioned in conjunction with the lower end faces 102a of the two upper bosses on the corresponding side walls 1.

[0042] In this embodiment, the upper protrusions 701 are preferably two in total, corresponding to the upper protrusions on the two side walls of the positioning frame.

[0043] In practical applications, multiple upper protrusions 701 can be provided along the vertical height direction of the insulating pressure plate 7, forming multiple pairs of upper protrusions 701. Correspondingly, multiple upper bosses are also provided on the side wall 1 of the positioning frame. Alternatively, multiple protrusions can be provided on the same side outside the insulating pressure plate 7 along the length direction of the side wall 1 of the positioning frame.

[0044] To minimize the size of the module connector, the two lower protrusions 501 of the terminal insulator 5 are positioned close to the lower end face of the terminal insulator 5, with a distance between the two lower protrusions 501 and the lower end face of the terminal insulator; similarly, the two upper protrusions 701 of the insulating pressure plate 7 are positioned close to the lower end face of the insulating pressure plate 7, with a distance between the two upper protrusions 701 and the lower end face of the insulating pressure plate 7. This structure allows the two lower protrusions 501 of the terminal insulator 5 and the two upper protrusions 701 of the insulating pressure plate 7 to be as close as possible, thus allowing the upper and lower bosses on the positioning frame to be positioned closer together, ultimately reducing the size of the positioning frame and consequently the size of the module connector.

[0045] To enhance the connection between the insulating pressure plate 7 and the terminal insulator 5, an installation step 502 is provided on the upper part of the terminal insulator 5. Multiple independent columnar bodies 503 are provided on the installation step 502, and each columnar body 503 is provided with a lower mounting hole 504 that penetrates the terminal insulator 5. The insulating pressure plate 7 is provided with multiple upper mounting holes 703 corresponding to the lower mounting holes 504. The lower part of the upper mounting holes 703 is fitted onto the outside of the columnar bodies 503. A terminal positioning claw 6 is provided in the upper mounting hole 703. After the insulating pressure plate 7 and the terminal insulator 5 are assembled, the terminal positioning claw is located at the upper end of the columnar body 503.

[0046] The structure of inserting the columnar body 503 into the mounting hole 703 not only facilitates the installation and positioning between the insulating pressure plate 7 and the terminal insulator 5, but also strengthens the connection between the insulating pressure plate 7 and the terminal insulator 5 and reduces the relative wobble between them.

[0047] In this embodiment, a positioning step 505 is provided at the connection between the columnar body and the mounting step, and a countersunk section 702 that mates with the positioning step is provided at the lower end of the upper mounting hole.

[0048] When the terminal insulator module 8 is installed, the terminal positioning claw 6 can first pass through the countersunk hole 702 and then be inserted into the upper mounting hole 703 in the insulating pressure plate 7. Then, the upper mounting hole 703 of the insulating pressure plate 7 is lowered and fitted onto the columnar body 503. In this method, the countersunk hole section 702 is positioned with the positioning step 505 as the reference. That is, after the insulating pressure plate 7 and the terminal insulator 5 are installed, the end of the countersunk hole section 702 abuts or fits against the upper end of the positioning step 505.

[0049] Because the diameter of the countersunk section 702 is larger than the rest of the upper mounting hole 703, it makes it easier to insert the terminal positioning claw 6 into the upper mounting hole, thereby improving the installation efficiency of the entire module connector.

[0050] Alternatively, during installation, the mounting step 502 of the terminal insulator 5 is fitted against the lower end face 7a of the insulating pressure plate. After the mounting step 502 and the lower end face 7a of the insulating pressure plate are fitted together, a mounting mating surface 13 is formed (at this time, the mounting mating surface is both the end face of the mounting step 502 and the lower end face 7a of the insulating pressure plate). In this installation method, the mounting mating surface 13 is located between the upper boss 102 and the lower boss 101 of the positioning frame. Thus, when the side wall of the positioning frame is installed with the corresponding stop, the stop firmly compresses the insulating pressure plate 7 and the terminal insulator 5, which also facilitates the miniaturization of the stop and the module connector.

[0051] Figure 4 The diagram illustrates the process of inserting pin terminals 9 into the terminal insulator module 8 to form the plug unit 10. (As shown...) Figure 5 As shown, inserting the socket terminal 11 into the terminal insulator module 8 forms the socket unit 12.

[0052] In this embodiment, the terminal mounting holes in the terminal insulator module 8 (the upper mounting hole 703 of the insulating pressure plate 7 and the lower mounting hole 504 of the terminal insulator 5 corresponding to form terminal mounting holes) are designed to be three. In practical applications, the number of terminal mounting holes is not limited and can be determined according to actual needs, for example... Figure 10 In the schematic terminal insulator module, there are 6 terminal mounting holes.

[0053] In practical applications, the positioning frame also includes stops 3 located at both ends of the two side walls 1 and fixedly connected to the two side walls 1.

[0054] An intermediate boss 103 is provided on the two side walls between the upper boss 102 and the lower boss 101 for connecting and installing with the end blocks. The intermediate boss 103 is provided with a threaded hole 103a for installing with the block by means of a connecting bolt 14.

[0055] In the technical solution of this invention, the lower protrusion 501 on the terminal insulator 5 is positioned in conjunction with the lower protrusion 101 on the side wall, and the upper protrusion 701 on the insulating pressure plate 7 is positioned in conjunction with the upper protrusion 102 on the side wall. Therefore, the intermediate protrusion 103 on the side wall 1 no longer plays a role in positioning the terminal insulator module 8. Thus, the intermediate protrusion 103 only needs to satisfy the requirement of being able to provide a threaded hole 103a. That is, the intermediate protrusion 103 can be designed to extend the entire length of the side wall from one end to the other, or it can be provided only at both ends of the side wall 1, with no intermediate protrusion in the middle.

[0056] To make the entire module connector structure more compact and smaller in size, the lower end face of the lower boss 101 is flush with the lower end face of the corresponding side wall 1, or / and the upper end face of the upper boss 102 is flush with the upper end face of the corresponding side wall 1.

[0057] Preferably, the lower end face of the lower boss 101 is flush with the lower end face of the corresponding side wall 1, and the upper end face of the upper boss 102 is flush with the upper end face of the corresponding side wall 1.

[0058] For the same reason, it is preferable that the lower end face of the lower boss 101 is flush with the lower end faces of the two stops, or / and the upper end face of the upper boss 102 is flush with the upper end faces of the two stops.

[0059] Preferably, the lower end face of the lower boss 101 is flush with the lower end faces of the two blocks 3, and the upper end face of the upper boss 102 is flush with the upper end faces of the two blocks.

[0060] like Figure 7 As shown, multiple plug units 10 are installed in the positioning frame of the modular connector (i.e., plug connector A) which serves as the plug part, and multiple socket units 12 are correspondingly installed in the positioning frame of the modular connector (i.e., socket connector B) which serves as the socket part. The plug units and the corresponding socket units combine to form a signal connection unit for transmitting signals.

[0061] The plug connector A and the socket connector B are fixedly connected to each other by screws via their respective stops 3.

[0062] In this embodiment, a positioning post 4 is provided on the stop block of the plug connector A, and a positioning hole 15 is provided on the stop block of the socket connector B to cooperate with the positioning post 3 for installation. The positioning post and the positioning hole cooperate to realize the installation positioning between the plug connector A and the socket connector B.

[0063] Typically, a total of three positioning pins 4 are set on the two blocks of plug connector A (two on one block and one on the other block). Correspondingly, one positioning pin is set on one block and two positioning pins are set on the other block of socket connector B.

[0064] In practical applications, the positioning, installation, and connection between the plug connector A and the socket connector B can also be achieved by setting a positioning hole on the plug connector A and a positioning post on the socket connector B.

[0065] The directional words "up" and "down" mentioned in this article are all related to... Figure 2 , Figure 3 , Figure 6 as well as Figure 8 The top and bottom are consistent. These directional terms are merely for the convenience of description and do not constitute a limitation on the scope of protection of this invention.

[0066] If the product placement direction involves infringement, Figure 2 or 3 or Figure 6 as well as Figure 8 Incompatible, please adjust their orientation. Figure 2 or Figure 3 or Figure 6 or Figure 8 After confirming consistency, compare it with the technical solution to be protected by the claims of this application.

[0067] like Figure 8 As shown, this invention provides a lower protrusion 501 on the terminal insulator 5 in the terminal insulator module, which engages with the lower protrusion 101 on the side wall of the positioning frame for positioning; simultaneously, an upper protrusion 701 on the insulating pressure plate 7 engages with the upper protrusion 102 on the side wall of the positioning frame for positioning. This ensures that during use, the pulling force of the wires on the contact terminals is not easily transmitted to the mating surface 13 between the terminal insulator and the insulating pressure plate through the terminal positioning claw 6. This solves the technical problem that the plug unit and socket unit in this modular connector are prone to detaching at the mating surface 13 between the terminal insulator and the insulating pressure plate, resulting in poor resistance to pulling and impact vibration. This makes the product highly reliable, more adaptable, and eliminates concerns about module cracking.

[0068] Meanwhile, according to the technical solution of the present invention, the connection requirements between the terminal insulator and the insulating pressure plate are greatly reduced. Even if the two are not ultrasonically welded or glued, the insulating pressure plate 7 will not come out of the positioning frame during the use of the module connector.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the claims of the present invention.

Claims

1. A modular connector with anti-pull function, comprising a positioning frame and a terminal insulator module (8), characterized in that: The terminal insulator module includes an insulating pressure plate (7) and a terminal insulator (5) assembled together. The terminal insulator (5) has at least two lower protrusions (501) on its outer side. The corresponding side wall (1) of the positioning frame has a lower boss (101) that is positioned in conjunction with the lower end face (501a) of the corresponding lower protrusion. The insulating pressure plate (7) has at least two upper protrusions (701) on its outer side. The upper end face (701a) of the upper protrusion is positioned in conjunction with the lower end face (102a) of the upper boss on the corresponding side wall. The positioning frame also includes a stop block (3) located at both ends of the two side walls and fixedly connected to the side walls. The two side walls have an intermediate boss (103) located between the upper boss (102) and the lower boss (101) for connecting and installing with the stop block. The intermediate boss has a threaded hole (103a) for connecting with the connecting bolt (14) to realize the installation of the intermediate boss and the stop block.

2. A modular connector with anti-pull function according to claim 1, characterized in that: The lower protrusion (501) of the terminal insulator (5) is located near the lower end face (5a) of the terminal insulator, and there is a distance between the lower protrusion and the lower end face (5a) of the terminal insulator; the upper protrusion (701) of the insulating pressure plate (7) is located near the lower end face (7a) of the insulating pressure plate, and there is a distance between the upper protrusion (701) and the lower end face (7a) of the insulating pressure plate.

3. A modular connector with anti-pull function according to claim 1, characterized in that: The upper part of the terminal insulator is provided with an installation step (502), and a column (503) is provided on the installation step (502). The column (503) is provided with a lower installation hole (504) that penetrates the terminal insulator. The insulating pressure plate (7) is provided with an upper installation hole (703) corresponding to the lower installation hole. The lower part of the upper installation hole is fitted outside the column. A terminal positioning claw (6) is provided in the upper installation hole.

4. A modular connector with anti-pull function according to claim 3, characterized in that: The columnar body (503) is provided with a positioning step (505) at the connection between it and the mounting step, and the upper mounting hole (703) is provided with a countersunk section (702) that cooperates with the positioning step (505) for installation.

5. A modular connector with anti-pull function according to claim 3, characterized in that: When the terminal insulator (5) is assembled with the insulating pressure plate (7), the mounting step (502) of the terminal insulator (5) is in contact with the lower end face (7a) of the insulating pressure plate to form a mounting mating surface (13), which is located between the upper boss and the lower boss in the positioning frame.

6. A modular connector with anti-pull function according to claim 1, characterized in that: The lower end face of the lower boss (101) is flush with the lower end face of the corresponding side wall, or / and the upper end face of the upper boss (102) is flush with the upper end face of the corresponding side wall.

7. A modular connector with anti-pull function according to claim 6, characterized in that: The lower end face of the lower boss (101) is flush with the lower end faces of the two blocks or / and the upper end face of the upper boss (102) is flush with the upper end faces of the two blocks.

8. A modular connector with anti-pull function according to claim 7, characterized in that: The stop block can be used to lock the adapter connector with screws, thereby achieving a fixed connection between two mutually compatible connectors.

9. A modular connector with anti-pull function according to claim 8, characterized in that: The stop block is provided with a positioning post (4) or a positioning hole (15), which can be installed in conjunction with the corresponding positioning hole or positioning post on the adapter connector.

Images