Connector with stable plugging

Abstract

The utility model relates to the technical field of connectors, and discloses a connector stable in plugging, which comprises a rubber shell and a needle seat which are connected in a plugging manner, a plurality of mounting holes are formed in the rubber shell, terminal wire harnesses are inserted in the mounting holes, middle needles corresponding to the terminal wire harnesses are arranged in the needle seat, and the middle needles are inserted into the mounting holes. A tongue piece used for preventing the terminal wire harness from moving relative to the rubber shell is arranged in the mounting hole, extends in an inclined mode and can deform in the process that the terminal wire harness is inserted into the rubber shell. Locking holes communicated with the mounting holes are formed in the rubber shell, and terminal locking strips used for locking the terminal wire harnesses are inserted into the locking holes. In the using process, the terminal wire harness is not prone to moving relative to the rubber shell due to double locking of the tongue piece and the terminal locking strip, and the stability of wire harness transmission is high.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and in particular, to a connector with stable plugging. Background Art

[0002] A connector is an essential component in electronic devices. Its function is to achieve electrical connections between different active devices through physical contact, and it is widely used in fields such as consumer electronics, computers and communication devices, automotive electronics, industrial automation, and medical devices.

[0003] In related technologies, a connector includes a plastic housing and a pin base that are plugged together. A plurality of terminal wire harnesses are inserted into the plastic housing, and middle pins corresponding to the terminal wire harnesses are inserted into the pin base. When the plastic housing and the pin base are plugged into each other, the terminal wire harnesses will contact the corresponding middle pins to achieve the connection of the circuit.

[0004] However, in the process of using the above connector, especially when it is subjected to vibration, the terminal wire harnesses are prone to move relative to the plastic housing, resulting in affecting the stability of line transmission, which needs to be improved. Summary of the Utility Model

[0005] In order to make the terminal wire harnesses not easy to move relative to the plastic housing and improve the stability of line transmission, this application provides a connector with stable plugging.

[0006] A connector with stable plugging provided by this application adopts the following technical solutions:

[0007] A connector with stable plugging includes a plastic housing and a pin base that are plugged together. A plurality of mounting holes are formed in the plastic housing, terminal wire harnesses are inserted into the mounting holes, middle pins corresponding to the terminal wire harnesses are provided in the pin base, a tongue piece for preventing the terminal wire harnesses from moving relative to the plastic housing is arranged in the mounting holes, the tongue piece extends obliquely and can be deformed during the process of inserting the terminal wire harnesses into the plastic housing; locking holes communicating with the respective mounting holes are formed in the plastic housing, and terminal locking bars for locking the terminal wire harnesses are inserted into the locking holes.

[0008] By adopting the above technical solutions, when the terminal wire harnesses are installed in the plastic housing, on the one hand, the tongue piece can prevent them from moving relative to the plastic housing, and on the other hand, the terminal locking bars can further lock them. With such a setting, the terminal wire harnesses are doubly locked after being installed in place, and during the use of the connector, the terminal wire harnesses are not easy to move relative to the plastic housing, and the stability of line transmission is high.

[0009] Optionally, a fixing block for abutting against the terminal wire harnesses is integrally formed in each mounting hole of the plastic housing, a first limiting portion is provided on the side of the terminal wire harnesses facing the tongue piece, and the tongue piece abuts against the side of the first limiting portion away from the fixing block.

[0010] By adopting the above technical solution, when installing the terminal wire harness, first insert the terminal wire harness into the installation hole. During the insertion process, the tongue piece will undergo elastic deformation under the extrusion of the first limiting portion. After the terminal wire harness moves to abut against the fixed block, the tongue piece will separate from the first limiting portion and reset under its own elasticity. At this time, the tongue piece and the fixed block are respectively arranged on both sides of the first limiting portion, making it difficult for the first limiting portion to move relative to the plastic housing, thereby realizing the pre-locking of the terminal wire harness.

[0011] Optionally, a second limiting portion is provided on one side of the terminal wire harness facing the terminal locking bar, and a locking block is provided on one side of the terminal locking bar facing the terminal wire harness. The locking block abuts against the side of the second limiting portion away from the fixed block.

[0012] By adopting the above technical solution, after the terminal wire harness is inserted in place, continue to press the locking block towards the side close to the plastic housing until the locking block moves to the side of the second limiting portion away from the fixed block. At this time, the second limiting portion is blocked by the locking block and the fixed block and is not easy to move relative to the plastic housing, thereby realizing the secondary locking of the terminal wire harness, with good locking effect and high stability of the terminal wire harness.

[0013] Optionally, the tongue piece is integrally formed on the plastic housing, and a relief groove for the tongue piece to deform and extend into is provided on the hole wall of the installation hole.

[0014] By adopting the above technical solution, the tongue piece and the plastic housing are processed by an integral molding method, with high connection strength and simple manufacturing process. The relief groove provides a deformation space for the tongue piece after being pressed, which is beneficial to ensuring the normal installation of the terminal wire harness.

[0015] Optionally, a plurality of clamping blocks are provided on the terminal locking bar, and clamping grooves are provided on the plastic housing and are matched with the clamping blocks.

[0016] By adopting the above technical solution, the terminal locking bar is connected to the plastic housing by the cooperation of the clamping blocks and the clamping grooves. After being connected in place, the terminal locking bar has high self-stability and good locking effect on the terminal wire harness.

[0017] Optionally, there are two clamping blocks which are respectively arranged on different sides of the terminal locking bar, and a deformation space for the clamping blocks to extend into after being pressed is provided on the terminal locking bar.

[0018] By adopting the above technical solution, the connection points between the terminal locking bar and the plastic housing are numerous and scattered, which is beneficial to further improving the connection strength between the two.

[0019] Optionally, a slot for the plastic housing to extend into is provided on the pin base, and a plurality of guiding grooves are spacedly distributed on the slot wall of the slot, and guiding edges are integrally formed on the plastic housing and are matched with the guiding grooves.

[0020] By adopting the above technical solution, when plugging the plastic shell and the needle seat, the plastic shell is inserted into the slot, and the guide edge will extend into the corresponding guide groove, which not only plays a guiding and positioning role, but also helps to align the terminal harness with the corresponding center needle; it can also increase the connection area between the plastic shell and the needle seat, thereby improving the connection stability between the two.

[0021] Optionally, an elastic buckle extending toward the slot is integrally formed on the needle seat, and an anti-drop hook cooperating with the elastic buckle is integrally formed on the outer wall of the plastic shell.

[0022] By adopting the above technical solution, when the plastic shell and the needle seat are plugged into each other, the elastic buckle will engage with the anti-drop hook, so that the plastic shell is not easily separated from the needle seat, which helps to further improve the connection stability between the two.

[0023] Optionally, a plurality of barbs are integrally formed on the middle needle, and the barbs are provided with connection bubble points for interference fit with the needle seat.

[0024] By adopting the above technical solution, the middle needle is installed on the needle seat by interference fit, the installation process is simple, and the stability of the middle needle is high. After being installed in place, the barb will press on the needle seat to further prevent the middle needle from coming out of the needle seat.

[0025] Optionally, a positioning piece with a through hole in the middle is connected to the needle seat, and a positioning bubble point for interference fit with the needle seat is provided on the positioning piece.

[0026] By adopting the above technical solution, when using the connector, the bolt can be inserted into the through hole, and the positioning piece can be connected to a fixed object with the help of the bolt, so that the connector can be fixedly installed in the desired position. The positioning piece is installed on the needle seat by interference fit, the installation process is simple, and the positioning piece has high stability.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the terminal harness is installed in the plastic shell, the tongue and the terminal lock strip can prevent its relative movement to the plastic shell, so that the terminal harness and the middle needle are always in contact during the use of the connector, and the line transmission is highly stable;

[0029] 2. When the plastic shell is plugged into the needle seat, the elastic buckle and the anti-drop hook are engaged with each other, and the connection strength and stability of the two are high; the guide edge and the guide groove cooperate to play a guiding and positioning role when the plastic shell is plugged in;

[0030] 3. The middle needle and the positioning piece are installed on the needle seat by interference fit, which has high stability and simple installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic structural diagram of an embodiment of the present application.

[0032] Figure 2 It is a schematic sectional view of an embodiment of the present application.

[0033] Figure 3 It is a schematic structural diagram when the rubber shell and the pin base are separated in an embodiment of the present application.

[0034] Figure 4 It is a partial sectional view of the pin base in an embodiment of the present application.

[0035] Figure 5 It is Figure 4 an enlarged schematic view of part A in

[0036] Figure 6 It is a schematic sectional view of the pin base for showing the positioning bubble point in an embodiment of the present application.

[0037] Figure 7 It is an exploded schematic view of the rubber shell, the terminal wire harness and the terminal locking bar in an embodiment of the present application.

[0038] Figure 8 It is a schematic sectional view of the rubber shell in an embodiment of the present application.

[0039] Figure 9 It is Figure 8 an enlarged schematic view of part B in

[0040] Explanation of reference numerals:

[0041] 1. Rubber shell; 11. Anti - detachment hook; 12. Guide rib; 13. Mounting hole; 131. Relief groove; 14. Fixed block; 15. Tongue piece; 16. Locking hole; 17. Clamping groove; 2. Pin base; 21. Socket; 22. Elastic buckle; 23. Guide groove; 3. Terminal wire harness; 31. First limiting part; 32. Second limiting part; 4. Middle pin; 41. Barbs; 42. Connecting bubble point; 5. Positioning piece; 51. Through hole; 52. Positioning bubble point; 6. Terminal locking bar; 61. Through hole; 62. Locking block; 63. Deformation space; 64. Clamping block. Detailed description of the specific implementation

[0042] The following further describes the present application in detail with reference to the Figures 1-9 accompanying drawings.

[0043] The embodiment of the present application discloses a connector with stable plug - in.

[0044] Refer to Figure 1, A connector with stable insertion includes a plastic housing 1 and a pin base 2. The plastic housing 1 is provided with a number of terminal wire harnesses 3, and the pin base 2 is provided with middle pins 4 that are equal in number to and correspond one-to-one with the terminal wire harnesses 3. The above middle pins 4 are conductive pins with conductive properties. In this embodiment, the terminal wire harnesses 3 are arranged in two rows, and each row has multiple terminal wire harnesses 3. In other embodiments, the terminal wire harnesses 3 can also be arranged in other ways. When the plastic housing 1 and the pin base 2 are inserted into each other, each terminal wire harness 3 will contact the corresponding middle pin 4 to achieve circuit conduction.

[0045] Refer to Figure 2 , Figure 3 , A slot 21 is formed on the side wall of the pin base 2 facing the plastic housing 1. The slot 21 is used for the plastic housing 1 to extend into to achieve the insertion connection between the plastic housing 1 and the pin base 2. To improve the insertion stability between the plastic housing 1 and the pin base 2, an elastic buckle 22 is integrally formed on the pin base 2. The elastic buckle 22 is located at the opening edge of the slot 21 and extends towards the middle of the slot 21. An anti-detachment hook 11 is integrally formed on the outer wall of the plastic housing 1. When the plastic housing 1 extends into the pin base 2, the elastic buckle 22 will be engaged with the anti-detachment hook 11, so that the plastic housing 1 is not easily detached from the pin base 2.

[0046] Refer to Figure 3 , A number of guiding ribs 12 are integrally formed on the outer wall of the plastic housing 1. In this embodiment, there are multiple guiding ribs 12 and they are parallelly distributed on the same side of the plastic housing 1. Multiple guiding grooves 23 are spacedly distributed on the wall of the slot 21. The guiding grooves 23 are equal in number to and correspond one-to-one with the guiding ribs 12. When the plastic housing 1 is inserted into the pin base 2, each guiding rib 12 will extend into the corresponding guiding groove 23 respectively to play a role of guiding and limiting.

[0047] Refer to Figure 4 , Figure 5 , A number of barbs 41 are integrally formed on each middle pin 4. The above barbs 41 are provided in multiple numbers and are arranged on both sides of the middle pin 4. Further, a connecting bubble point 42 is integrally formed on the barb 41. When the middle pin 4 is installed on the pin base 2, the connecting bubble point 42 will have an interference fit with the pin base 2 to prevent the middle pin 4 from falling off during the use of the connector.

[0048] Refer to Figure 6 , Positioning pieces 5 are inserted on both sides of the pin base 2. A through hole 51 is formed in the middle of the positioning piece 5. The through hole 51 can be penetrated by a bolt, so as to facilitate the fixed installation of the positioning piece 5 at the required position through the bolt, thereby realizing the fixation of the connector. Specifically, a positioning bubble point 52 is integrally formed on the positioning piece 5. When the positioning piece 5 is inserted into the pin base 2, the positioning bubble point 52 will have an interference fit with the pin base 2 to achieve the relative fixation between the positioning piece 5 and the pin base 2.

[0049] Refer to Figure 7 , Figure 8, a plurality of mounting holes 13 are formed in the plastic housing 1. The number of the mounting holes 13 is equal to and corresponds to that of the terminal wire harnesses 3 one by one. Each terminal wire harness 3 is respectively inserted into the corresponding mounting hole 13. A fixing block 14 is integrally formed in each mounting hole 13 of the plastic housing 1. The fixing block 14 is located at one end of the plastic housing 1 away from the opening for inserting the terminal wire harness 3 in the mounting hole 13.

[0050] Refer to Figure 8 , Figure 9 , a tongue piece 15 is integrally formed in each mounting hole 13 of the plastic housing 1. One end of the tongue piece 15 is fixed on the plastic housing 1, and the other end extends obliquely away from the hole wall of the corresponding mounting hole 13. A relief groove 131 for the tongue piece 15 to deform and extend into is formed in the hole wall of the mounting hole 13. A first limiting portion 31 is integrally formed on the side of the terminal wire harness 3 facing the tongue piece 15. During the process of inserting the terminal wire harness 3 into the mounting hole 13, the tongue piece 15 will deform into the relief groove 131 under the extrusion of the first limiting portion 31 and return to its original shape after the terminal wire harness 3 is inserted in place. At this time, the tongue piece 15 abuts against the side of the first limiting portion 31 away from the fixing block 14, thus playing a role of pre-locking.

[0051] Refer to Figure 8 , Figure 9 , a locking hole 16 communicating with each mounting hole 13 is formed in the plastic housing 1. A terminal lock bar 6 is inserted into the locking hole 16. A through hole 61 for the terminal wire harness 3 to pass through is provided on the terminal lock bar 6. Before inserting the terminal wire harness 3, the terminal lock bar 6 needs to be inserted into the locking hole 16 first, and the terminal lock bar 6 is about 1 mm higher than the plastic housing 1.

[0052] Refer to Figure 8 , Figure 9 , a locking block 62 is integrally formed on the side of the terminal lock bar 6 facing the terminal wire harness 3. A second limiting portion 32 is provided on the side of the terminal wire harness 3 facing the terminal lock bar 6. After the terminal wire harness 3 is inserted in place, continue to press the terminal lock bar 6 until it completely extends into the locking hole 16. The locking block 62 will abut against the side of the second limiting portion 32 away from the fixing block 14 to perform secondary locking on the terminal wire harness 3.

[0053] Refer to Figure 7 , in order to improve the stability of the terminal lock bar 6, a plurality of clamping blocks 64 are provided on the terminal lock bar 6. In this embodiment, two clamping blocks 64 are provided and are arranged on different sides of the terminal lock bar 6. And a deformation space 63 for the clamping blocks 64 to extend into after being pressed is provided on the terminal lock bar 6. A clamping groove 17 cooperating with the clamping blocks 64 is formed in the plastic housing 1. When the terminal lock bar 6 is installed on the plastic housing 1, the clamping blocks 64 will extend into the corresponding clamping grooves 17, so that the terminal lock bar 6 is not easily detached from the plastic housing 1.

[0054] It should be noted that in this embodiment, the terminal wire harness 3 includes a connection terminal and a wire fixedly connected, and both the first limiting portion 31 and the second limiting portion 32 are integrally formed on the connection terminal.

[0055] The implementation principle of a connector with stable insertion in the embodiment of the present application is as follows: When assembling the connector, first insert the terminal locking bar 6 into the locking hole 16 and make the terminal locking bar 6 about 11 mm higher than the plastic housing 1. Then insert the terminal wire harness 3 into the mounting hole 13 until the terminal wire harness 3 abuts against the fixing block 14. Next, completely press the terminal locking bar 6 into the plastic housing 1, and the relative fixation of the terminal wire harness 3 and the plastic housing 1 can be achieved. Finally, insert one end of the plastic housing 1 into the pin base 2 equipped with the middle pin 4 and make the elastic buckle 22 and the anti-disengagement hook 11 engage with each other, and the plug-in connection between the plastic housing 1 and the pin base 2 can be achieved. With such a setting, the connector is locked by both the tongue piece 15 and the terminal locking bar 6 during use, and it is not easy to move relative to the plastic housing 1 when vibrating, and the stability of the line transmission is high.

[0056] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A connector with stable insertion, comprising a plastic housing (1) and a pin base (2) that are inserted and connected to each other. A plurality of mounting holes (13) are formed in the plastic housing (1), and a terminal wire harness (3) is inserted into the mounting holes (13). A center pin (4) corresponding to the terminal wire harness (3) is provided in the pin base (2), and it is characterized in that: A tongue piece (15) for preventing the terminal wire harness (3) from moving relative to the plastic housing (1) is provided in the mounting hole (13). The tongue piece (15) extends obliquely and can be deformed during the insertion of the terminal wire harness (3) into the plastic housing (1). A locking hole (16) communicating with each mounting hole (13) is provided on the plastic housing (1), and a terminal lock bar (6) for locking the terminal wire harness (3) is inserted into the locking hole (16).

2. The connector with stable insertion according to claim 1, wherein: A fixing block (14) for abutting against the terminal wire harness (3) is integrally formed in each mounting hole (13) of the plastic housing (1). A first limiting portion (31) is provided on one side of the terminal wire harness (3) facing the tongue piece (15), and the tongue piece (15) abuts against the side of the first limiting portion (31) away from the fixing block (14).

3. The connector with stable insertion according to claim 2, wherein: A second limiting portion (32) is provided on one side of the terminal wire harness (3) facing the terminal lock bar (6). A locking block (62) is provided on one side of the terminal lock bar (6) facing the terminal wire harness (3), and the locking block (62) abuts against the side of the second limiting portion (32) away from the fixing block (14).

4. The connector with stable insertion according to claim 1, characterized in that: The tongue piece (15) is integrally formed on the plastic housing (1), and a relief groove (131) for the tongue piece (15) to deform and extend into is formed on the hole wall of the mounting hole (13).

5. The connector with stable insertion according to claim 1, characterized in that: A plurality of clamping blocks (64) are provided on the terminal lock bar (6), and a clamping groove (17) cooperating with the clamping blocks (64) is formed on the plastic housing (1).

6. The connector with stable insertion according to claim 5, wherein: At least two clamping blocks (64) are provided and are arranged on different sides of the terminal lock bar (6). A deformation space (63) for the clamping blocks (64) to extend into after being pressed is provided on the terminal lock bar (6).

7. The connector with stable insertion according to claim 1, characterized in that: A slot (21) for the plastic housing (1) to extend into is formed on the pin base (2). A plurality of guiding grooves (23) are spacedly distributed on the groove wall of the slot (21), and a guiding rib (12) cooperating with the guiding grooves (23) is integrally formed on the plastic housing (1).

8. The connector with stable insertion according to claim 7, wherein: An elastic buckle (22) extending towards the slot (21) is integrally formed on the pin base (2), and an anti - detachment hook (11) cooperating with the elastic buckle (22) is integrally formed on the outer wall of the plastic housing (1).

9. The pluggable and stable connector according to claim 1, wherein: A plurality of barbs (41) are integrally formed on the middle pin (4), and a connecting bubble point (42) for interference - fitting with the pin base (2) is provided on the barbs (41).

10. The connector with stable insertion according to claim 1, characterized in that: A positioning piece (5) with a through - hole (51) formed in the middle is connected to the pin base (2), and a positioning bubble point (52) for interference - fitting with the pin base (2) is provided on the positioning piece (5).

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