Terminal connector

Abstract

The utility model discloses a terminal connector, which comprises a connector shell, a buckle, a waterproof ring, a tail plug and a plurality of terminals, the connector shell comprises an outer shell body, the front end of the outer shell body is provided with a plugging cavity, the rear end of the outer shell body is provided with terminal limiting cavities, the front end of each terminal limiting cavity is communicated with the plugging cavity through a pin hole, the terminals are located in the terminal limiting cavities, insertion tongues of the terminals extend into the plugging cavity, clamping grooves are formed in the outer shell body above the pin holes, and the clamping grooves are communicated with the terminal limiting cavities. The terminal buckle is inserted and fixed in the clamping groove, a first step part and a second step part are formed at the lower end of the terminal buckle, and the first step part and the second step part are in compression joint with corresponding parts of the terminal; the waterproof ring is arranged at the rear end of the plugging cavity in an interference fit mode, and the tail plug is arranged at the rear end of the outer shell in an interference fit mode. And a forward and downward retaining elastic sheet is formed at the top of each terminal limiting cavity of the outer shell and behind the corresponding terminal buckle. The terminal is good in stability and waterproof performance, and the problem of terminal pin withdrawing is solved at the same time.

Description

Technical Field

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

[0002] Connectors are components that electronic engineers frequently encounter. They typically consist of two parts: a male connector and a female connector. Male and female connectors often employ a plug-in design, using a plug-in structure to lock and lock current or signals in place quickly.

[0003] Existing connectors are prone to terminal misalignment, and their internal structure is unstable during use. Long-term plugging and unplugging can lead to terminal pin ejection. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a terminal connection machine to solve the problems of poor internal structure stability of existing connectors, which easily lead to terminal misalignment and terminal pin retraction.

[0005] To achieve the above-mentioned technical effects, the technical solution adopted by this utility model is as follows:

[0006] A terminal connector includes a connector housing and a plurality of terminals spaced apart inside the connector housing; characterized in that it further includes a terminal latch, a waterproof ring, and a tail plug disposed within the connector housing; the connector housing includes an outer shell, a front end having a insertion / removal cavity, and a rear end having a terminal limiting cavity equal in number to the terminals, each terminal limiting cavity having its front end communicating with the insertion / removal cavity through a pin hole, the terminals being located within the terminal limiting cavities, their front end tongues extending into the insertion / removal cavities from the pin holes, the outer shell having a retaining groove above the pin holes, and the terminal latch... The terminal is inserted and fixed in the slot. The lower end of the terminal latch has a first step in the terminal limiting cavity and a second step lower than the first step in the pin hole. The first step and the second step press the corresponding part of the terminal. The waterproof ring is interference-fitted at the rear end of the insertion cavity. The inner hole of the waterproof ring is interference-fitted with the outer dimension of the insertion end of the connector inserted into the insertion cavity. The tail plug is interference-fitted at the rear end of the housing and has a cable hole at each terminal limiting cavity. The housing has a backstop spring at the top of each terminal limiting cavity and behind the terminal latch.

[0007] Furthermore, it also includes an inner shell. The outer shell is provided with limiting grooves in front of the waterproof ring and at the upper and lower ends of the insertion and extraction cavity. The outer shell is provided with limiting holes in front of the waterproof ring and on both sides of the insertion and extraction cavity. The inner shell is provided with limiting blocks that match the limiting grooves and locking blocks that match the limiting holes. The inner shell and the outer shell are mutually limited by the limiting grooves and limiting blocks and are connected by locking blocks and limiting holes.

[0008] Furthermore, the inner dimensions of the inner housing are between the outer and inner dimensions of the waterproof ring, and a guide groove is also provided at the lower end of the inner housing.

[0009] Furthermore, the inner housing has a slot at the top center of the front end, and the outer housing has a locking hole above the slot that engages with the hook of an external connector.

[0010] Furthermore, an elastic pressure plate is connected to the outer wall of the outer shell and behind the card hole. The lower surface of the front end of the pressure plate is provided with a protrusion, which is located directly above the card hole.

[0011] Furthermore, the outer shell has baffles on both sides outside the elastic pressure plate, and the top surface of the baffles is higher than the top surface of the elastic pressure plate.

[0012] Furthermore, a front protrusion and a rear protrusion are provided at intervals on both sides of the rear end of the terminal buckle. The front protrusion and the rear protrusion are provided with guide surfaces, and the protrusions on both sides are symmetrically arranged. The outer shell is provided with an anti-detachment protrusion that can be inserted into the gap between the front protrusion and the rear protrusion on both sides.

[0013] Furthermore, the outer surfaces of the waterproof ring and the tail plug are provided with multiple annular grooves at intervals.

[0014] Furthermore, the terminal has a horizontal lower surface, and the terminal limiting cavity has a supporting surface that is in contact with the lower surface of the terminal.

[0015] Furthermore, the terminal has a protrusion below its housing portion, and a clearance groove is provided at the center of the top of the terminal limiting cavity.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention provides a terminal limiting cavity, pin holes, and slots within the connector housing, and inserts terminal clips. The terminals are pressed together by the first and second steps of the terminal clips, and the terminal housing is limited by a retaining spring. This ensures good stability of the terminals within the connector after installation and solves the problem of terminal pin ejection caused by long-term insertion and removal. Furthermore, this invention enhances the waterproof function of the connector by providing a waterproof ring and a tail plug at the rear end of the insertion / removal cavity and the rear end of the terminal limiting cavity, respectively.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Attached Figure Description

[0019] Figure 1 This is a diagram showing the terminal connector of this utility model in use;

[0020] Figure 2 for Figure 1 Enlarged view of part A;

[0021] Figure 3 This is a front view of the connector housing of this utility model, showing a terminal installed inside.

[0022] Figure 4 for Figure 3 Sectional view along the BB direction;

[0023] Figure 5 for Figure 3 C-axis sectional view;

[0024] Figure 6 for Figure 5 Enlarged view of part D in the middle;

[0025] Figure 7 This is an exploded view of the connector housing of this utility model;

[0026] Figure 8 This is a sectional view of the outer shell of this utility model;

[0027] Figure 9 This is a schematic diagram of the terminal structure of this utility model;

[0028] Figure 10 This is a schematic diagram of the terminal clip structure of this utility model;

[0029] Figure 11 This is a schematic diagram of the anti-detachment structure formed by the front and rear protrusions and the anti-detachment boss of this utility model;

[0030] Figure 12 This is a schematic diagram of the waterproof ring structure of this utility model;

[0031] Figure 13 This is a schematic diagram of the tail plug structure of this utility model.

[0032] The labels and their corresponding names in the diagram are as follows:

[0033] 1. Connector housing; 11. Outer housing; 110. Mating / removing cavity;

[0034] 1101. Limiting groove, 1102. Limiting hole, 111. Terminal limiting cavity,

[0035] 1111. Support surface; 1112. Clearance groove; 112. Pin hole;

[0036] 113. Slot, 114. Anti-reverse spring, 1141. Notch,

[0037] 116. Clip hole; 117. Elastic compression plate;

[0038] 1171. Pressure block, 118. Baffle plate, 119. Anti-detachment boss,

[0039] 12. Inner shell, 121. Limiting block, 122. Locking block,

[0040] 123. Guide groove, 124. Slot, 2. Terminal,

[0041] 21. Tongue, 22. Box section, 23. Protrusion,

[0042] 3. Terminal latch, 31. First step portion, 32. Second step portion,

[0043] 33. Front protrusion, 34. Rear protrusion, 4. Waterproof ring,

[0044] 41. Annular groove, 5. Tail plug, 51. Cable hole,

[0045] 52. Annular groove; 6. Interlocking connector; 61. Hook. Detailed Implementation

[0046] A terminal connector, such as Figure 1-8As shown, the terminal connector includes a connector housing 1 and terminal latches 3, waterproof rings 4, and tail plugs 5 disposed inside the housing 11, as well as a plurality of terminals 2 spaced apart inside the connector housing 1. The connector housing 1 includes a housing 11, with a insertion / removal cavity 110 at the front end and terminal limiting cavities 111 (the same number as the terminals 2) isolated at the rear end. Each terminal limiting cavity 111 communicates with the insertion / removal cavity 110 through a pin hole 112 at its front end. A slot 113 is formed above the pin holes 112 on the housing 11, connecting all pin holes 112, the terminal limiting cavities 111 at the rear end, and the insertion / removal cavities 110 at the front end. An integrally formed, forward-downward-facing anti-reverse spring 114 is formed on the top of each terminal limiting cavity 111 and behind the first step 31 of the terminal latch 3. The anti-reverse spring 114 has a notch 1141 at its lower front corner. Terminal 2 is located within terminal limiting cavity 111, with its front end tongue 21 extending from pin hole 112 into insertion cavity 110; terminal latch 3 is inserted and fixed in slot 113 at its rear end; waterproof ring 4 is located at the rear end of insertion cavity 110, with its outer dimensions interfering with the side wall of insertion cavity 110, and its inner hole interfering with the outer dimensions of the insertion end of another pair of connectors 6 that match this connector. Tail plug 5 is interfering with the rear end of housing 11, and tail plug 5 has a cable hole 51 at each terminal limiting cavity 111 for leading out the cable at the rear end of terminal 2.

[0047] like Figure 9 As shown, terminal 2 has a horizontal lower surface, and terminal limiting cavity 111 has a supporting surface 1111 that is in contact with the lower surface of terminal 2. Terminal 2 has a protrusion 23 below its housing 22, and correspondingly, terminal limiting cavity 111 has a relief groove 1112 at the top.

[0048] like Figure 10 As shown, a first step portion 31 is formed in the middle of the terminal latch 3 within each terminal limiting cavity 111, and a second step portion 32, lower than the first step portion 31, is formed at the front end of each pin hole 112. The first step portion 31 and the second step portion 32 press against the corresponding part of the terminal 2 below them. Preferably, the second step portion 32 of the first step portion 31 is provided with an oblique guide surface.

[0049] like Figure 12 , 13 As shown, the outer surfaces of the waterproof ring 4 and the tail plug 5 are provided with multiple annular grooves 41 and 52 at intervals, and the inner surface of the waterproof ring 4 and the surface of the cable hole 51 of the tail plug 5 also adopt an alternating concave and convex annular structure.

[0050] This invention features a terminal limiting cavity, pin holes, and a slot within the connector housing. A terminal latch is inserted into the slot, and the first and second steps of the terminal latch press against corresponding parts of the terminal, along with the inclined guide surfaces of the two steps. This corrects directional deviations during terminal insertion, guiding the terminal back to its correct position. The first and / or second steps provide pressure and limiting for the terminal, ensuring its stable placement within the terminal limiting cavity. Furthermore, a notch is created at the lower front corner of the anti-retraction spring, allowing space for the terminal housing during installation. After installation within the connector housing, the notch contacts and limits the terminal housing, preventing it from retracting. This invention improves the stability of the connector's internal structure and solves the problem of terminal pin retraction caused by prolonged insertion and removal. By incorporating interference-fit waterproof rings and end plugs at the rear ends of the insertion / removal cavity and the terminal limiting cavity, respectively, the annular concave-convex surface structure creates a multi-level seal, enhancing the connector's waterproof function. By setting the lower surface of the terminal to a horizontal plane, this utility model sets the lower surface of the front tongue of the existing terminals with unequal heights to the same horizontal plane as the lower surface of the rear wiring part, and sets a protrusion below the terminal box. The terminal limiting cavity is correspondingly provided with a horizontal support surface and a relief groove for limiting the protrusion. By pressing it together with the terminal buckle, the effective contact area between the terminal and the terminal limiting cavity is increased, further ensuring the stability of the terminal after installation.

[0051] As a preferred option, such as Figure 7 , 8 As shown, the outer shell 11 has limiting grooves 1101 at both the upper and lower ends of the insertion / removal cavity 110, located in front of the waterproof ring 4. The outer shell 11 also has limiting holes 1102 on both sides of the insertion / removal cavity 110, in front of the waterproof ring 4. An inner shell 12 is inserted into the front end of the insertion / removal cavity 110 of the outer shell 11, and is equipped with limiting blocks 121 and locking blocks 122 that cooperate with the limiting grooves 1101 and the limiting holes 1102. The inner shell 12 and the outer shell 11 are mutually limited by the limiting grooves 1101 and the limiting blocks 121, and are engaged with the limiting holes 1102 by the locking blocks 122. The inner dimensions of the inner shell 12 are between the outer and inner dimensions of the waterproof ring 4. A guide groove 123 is provided in the middle of the limiting block 121 at the lower end of the inner shell 12. The inner housing 12 has a slot 124 at the top center of its front end, and the outer housing 11 has a locking hole 116 above the slot 124 for engaging with the hook 61 of the external connector 6. An integrally formed elastic pressure plate 117 is connected to the outer wall of the outer housing 11, located behind the locking hole 116. A downwardly protruding pressure block 1171 is located on the lower surface of the front end of the elastic pressure plate 117, directly above the locking hole 116. Baffles 118 are provided on both sides of the outer housing 11 outside the elastic pressure plate 117, with the top surface of the baffles 118 higher than the top surface of the elastic pressure plate 117.

[0052] More preferably, the limiting groove 1101 and limiting hole 1102 located on the upper part of the insertion cavity 110 and the inner shell 12 are both wedge-shaped structures, and the limiting groove 1101 and limiting hole 1102 located on the lower part of the insertion cavity 110 and the inner shell 12 are both rectangular structures. Furthermore, two sets of limiting grooves 1101 and limiting holes 1102 located on the lower part of the insertion cavity 110 and the inner shell 12 are provided at intervals.

[0053] This invention connects the inner shell to the front end of the insertion / removal cavity of the outer shell. The inner shell serves two purposes: firstly, it limits the waterproof ring; secondly, a slot at the top and a guide groove at the bottom of the inner shell guide and limits the insertion / removal of the male and female connectors, ensuring accurate positioning after insertion. Furthermore, an integrally formed elastic pressure plate at the top of the outer shell allows for easier and less strenuous operation when one of the two pairs of male and female connectors is removed. This is achieved by pressing the elastic plate, causing its lower end to press down on the hooks of the connectors, disengaging them from their locking holes. This is significantly easier and less strenuous than directly pressing the base of the integrally formed pressing spring near the hook in existing technologies. Additionally, side baffles provide a cover over the entire assembly formed by the inserted male and female connectors, preventing accidental contact with the elastic pressure plate and potential loss of engagement (loosening of the connection).

[0054] As a preferred option, such as Figure 6 , 10 As shown in Figure 11, a front protrusion 33 and a rear protrusion 34 are provided at intervals on both sides of the rear end of the terminal buckle 3. The rear ends of the front protrusion 33 and the rear protrusion 34 are provided with guide surfaces, and the protrusions on both sides are symmetrical. A non-detachment protrusion 119 is symmetrically provided on both sides inside the outer shell 11, which can be inserted into the gap between the front protrusion 33 and the rear protrusion 34. When the terminal buckle 3 is inserted into the limit position of the slot 113 (the rear end of the terminal buckle is isolated from the outer shell), the rear end surface of the non-detachment protrusion 119 and the front end surface of the front protrusion 33 form a non-detachment surface that abuts and limits the detachment. The first step part 31 is located in the terminal limiting cavity 111, and the second step part 32 is located in the pin hole 112. When the terminal clip 3 is partially inserted into the slot 113 and the anti-detachment protrusion 119 is located between the front protrusion 33 and the rear protrusion 34, the rear end face of the anti-detachment protrusion 119 and the front end face of the front protrusion 33 form a limiting anti-detachment surface. The first step portion 31 is located in the pin hole 112 and the second step portion 32 is located in the insertion and removal cavity 110.

[0055] This utility model provides front and rear protrusions on both sides of the terminal clip and anti-detachment protrusions on the outer shell, thereby forming a two-level anti-detachment system on both sides of the terminal clip between the front and rear protrusions and in front of the front protrusion. This facilitates the installation of the terminal and the terminal clip and can also adapt to the needs of different terminals.

[0056] This utility model is not limited to the specific embodiments described above. For those skilled in the art, all modifications made based on the above concept without creative effort fall within the protection scope of this utility model.

Claims

1. A terminal connector, comprising a connector housing and a plurality of terminals spaced apart inside the connector housing; characterized in that, It also includes terminal clips, waterproof rings, and tail plugs disposed within the connector housing; the connector housing includes an outer shell, the front end of which has a insertion / removal cavity, and the rear end of which is isolated with terminal limiting cavities equal in number to the number of terminals. The front end of each terminal limiting cavity communicates with the insertion / removal cavity through a pin hole. The terminal is located within the terminal limiting cavity, and its front end tongue extends into the insertion / removal cavity from the pin hole. The outer shell forms a slot above the pin hole, and the terminal clip is inserted and fixed within the slot. The lower end of the terminal clip is positioned at the terminal limiting cavity. A first step is formed inside the cavity, and a second step, lower than the first step, is formed inside the pin hole. The first and second steps are crimped to the corresponding parts of the terminals. The waterproof ring is interference-fitted at the rear end of the insertion cavity. The inner hole of the waterproof ring is interference-fitted with the outer dimension of the insertion end of the externally mated connector inserted into the insertion cavity. The tail plug is interference-fitted at the rear end of the housing, and the tail plug has a cable hole at each terminal limiting cavity. The housing has a retaining spring at the top of each terminal limiting cavity and behind the terminal latch.

2. A terminal connector according to claim 1, characterized in that, It also includes an inner shell, and the outer shell is provided with a limiting groove in front of the waterproof ring and at the upper and lower ends of the insertion and extraction cavity. The outer shell is provided with a limiting hole in front of the waterproof ring and on both sides of the insertion and extraction cavity. The inner shell is provided with a limiting block that matches the limiting groove and a locking block that matches the limiting hole. The inner shell and the outer shell are mutually limited by the limiting groove and the limiting block and are connected by the locking block and the limiting hole.

3. A terminal connector according to claim 2, characterized in that, The inner dimensions of the inner shell are between the outer and inner dimensions of the waterproof ring, and a guide groove is also provided at the lower end of the inner shell.

4. A terminal connector according to claim 2, characterized in that, The inner housing has a slot at the top center of the front end, and the outer housing has a locking hole above the slot that engages with the hook of an external connector.

5. A terminal connector according to claim 4, characterized in that, An elastic pressure plate is connected to the outer wall of the outer shell and located behind the card hole. A pressure block is provided on the lower surface of the front end of the pressure plate, and the pressure block is located directly above the card hole.

6. A terminal connector according to claim 5, characterized in that, The outer shell has baffles on both sides outside the elastic pressure plate, and the top surface of the baffles is higher than the top surface of the elastic pressure plate.

7. A terminal connector according to claim 1, characterized in that, Both sides of the terminal buckle are provided with a front protrusion and a rear protrusion at intervals. Both the front protrusion and the rear protrusion are provided with guide surfaces, and the protrusions on both sides are symmetrically arranged. Both sides of the outer shell are provided with an anti-detachment protrusion that can be inserted into the gap between the front protrusion and the rear protrusion.

8. A terminal connector according to claim 1, characterized in that, The outer surfaces of the waterproof ring and the tail plug are each provided with multiple annular grooves at intervals.

9. A terminal connector according to claim 1, characterized in that, The terminal has a horizontal lower surface, and the terminal limiting cavity has a supporting surface that is in contact with the lower surface of the terminal.

10. A terminal connector according to claim 9, characterized in that, The terminal has a protrusion below its housing, and a clearance groove is provided at the top center of the terminal limiting cavity.

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