Connector

Abstract

The utility model belongs to the technical field of connectors, and discloses a connector, which comprises an upper shell, a lower shell and a TPA piece, the lower shell is provided with an inserting groove, the upper shell is inserted into the inserting groove, the side wall of the inserting groove is provided with an inserting hole, the TPA piece penetrates through the inserting hole and is inserted into the inserting groove, and the TPA piece sequentially passes through an inserting position, a pre-locking position and a final locking position in the process of being inserted into the inserting groove. The TPA piece is provided with a first clamping head, a second clamping head and a third clamping head, the upper shell is correspondingly provided with a first clamping groove, the groove bottom of the inserting groove is correspondingly provided with a second clamping groove, the side wall of the inserting groove is correspondingly provided with a third clamping groove, and when the TPA piece is located at the inserting position, the first clamping head, the second clamping head and the third clamping head are connected with the first clamping groove, the second clamping groove and the third clamping groove in a clamped mode respectively. The connector is simple in structure, and the PTA piece is prevented from being completely pulled out and separated from the connector shell, so that the TPA piece is prevented from being lost.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector. Background Art

[0002] A connector is a component often contacted by electronic engineering technicians. It is mainly used to connect two active devices to transmit current or signals. Between the blocked parts or isolated circuits in a circuit, the connector can build a communication bridge to make the current flow, so that the circuit can achieve the predetermined function.

[0003] The connector is generally provided with a TPA (Terminal Position Assurance) part, commonly known as a terminal locking piece. The TPA part is installed in the connector housing and abuts against the wiring terminal to ensure the stable position of the wiring terminal inside the connector and prevent the wiring terminal from moving or falling off when connecting or disconnecting the circuit.

[0004] In the prior art, the TPA part is generally installed in the connector by inserting it from one side of the connector housing. Generally, after the TPA part is inserted, it will reach the pre-locking position and the final locking position successively. When the TPA part is at the pre-locking position and the final locking position, it can be reliably fixed relative to the connector housing. When it is necessary to replace the wiring terminal, it is necessary to separate the TPA part from the wiring terminal. At this time, it is necessary to pull out the TPA part from the connector housing to perform the subsequent disassembly and assembly process of the terminal. In the above process, it is necessary to completely pull out and remove the TPA part from the connector housing, the operation is relatively complicated, and the situation of loss of the TPA part will occur. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a connector with a simple structure, which can provide reliable and effective positioning for the TPA part when it is just inserted, and can make the TPA part keep fixed relative to the connector housing when it is about to be pulled out, avoiding completely pulling out the PTA part and detaching it from the connector housing, and avoiding the situation of loss of the TPA part.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A connector includes an upper shell, a lower shell and a TPA part. The lower shell is provided with a plugging groove along a first direction. The upper shell is plugged into the plugging groove. The wiring terminal can penetrate the upper shell and the plugging groove along the first direction. A jack is arranged on the side wall of the plugging groove along a second direction. The TPA part penetrates the jack and is inserted into the plugging groove to perform position constraint on the wiring terminal;

[0008] The TPA part is adapted to sequentially pass through an insertion position, a pre-locking position, and a final-locking position during the process of being inserted into the insertion slot; a first clamping head is provided on one side of the TPA part facing the upper shell, and a first clamping groove is correspondingly provided on the upper shell; a second clamping head is provided on one side of the TPA part facing the lower shell, and a second clamping groove is correspondingly provided at the bottom of the insertion slot; a third clamping head is provided on one side of the TPA part along the third direction, and a third clamping groove is correspondingly provided on the side wall of the insertion slot along the third direction;

[0009] When the TPA part is located at the insertion position, the first clamping head is clamped with the first clamping groove, the second clamping head is clamped with the second clamping groove, and the third clamping head is clamped with the third clamping groove;

[0010] The first direction, the second direction, and the third direction are orthogonally arranged in pairs.

[0011] Preferably, the TPA part includes a main body and an elastic arm extending along the second direction on the main body, and the first clamping head, the second clamping head, and the third clamping head are respectively located on the elastic arm.

[0012] Preferably, a fourth clamping head is provided on one side of the TPA part along the third direction, and a fourth clamping groove is correspondingly provided on the side wall of the insertion slot along the third direction;

[0013] When the TPA part is located at the pre-locking position, the fourth clamping head is clamped with the fourth clamping groove.

[0014] Preferably, a fifth clamping groove is correspondingly provided on the side wall of the insertion slot along the third direction, and along the second direction, the fourth clamping groove is located between the third clamping groove and the fifth clamping groove;

[0015] When the TPA part is located at the final-locking position, the fourth clamping head is clamped with the fifth clamping groove.

[0016] Preferably, a row of first through holes is arranged at the bottom of the insertion slot, and a plurality of the first through holes in a single row are spaced along the second direction. The first through holes are opened along the first direction, the wiring terminal passes through the lower shell through the first through holes, and the TPA part is provided with a limiting groove corresponding to the single row of the first through holes along the second direction;

[0017] The wiring terminal is adapted to abut against the opposite side walls of the limiting groove when passing through the first through holes.

[0018] Preferably, the upper shell is provided with a plurality of second through holes corresponding to the first through holes one by one, and the wiring terminal passes through the upper shell through the second through holes.

[0019] Preferably, a butt joint head is further provided on the side of the TPA part along the second direction;

[0020] When the TPA part is in the final locking position, the butt joint head abuts against the side wall of the insertion slot.

[0021] Preferably, a sealing member is further provided between the upper shell and the lower shell, and the sealing member is used to seal the gap between the upper shell and the lower shell.

[0022] Preferably, the upper shell is arranged in a stepped shape along the first direction, the small end of the upper shell is inserted into the insertion slot, and the sealing member is arranged in a ring shape and sleeved on the small end of the upper shell.

[0023] Preferably, the upper shell has a fifth clamping head, and a sixth clamping groove is correspondingly provided on the side wall of the insertion slot. The fifth clamping head is adapted to be inserted into the sixth clamping groove when the upper shell is inserted into the insertion slot in place relative to the insertion slot.

[0024] Beneficial effects:

[0025] For the connector provided by the present invention, the TPA part is adapted to sequentially pass through the insertion position, the pre-locking position and the final locking position during the process of being inserted into the insertion slot. The TPA part will reach the insertion position first before moving to the pre-locking position. Specifically, when the TPA part is inserted into the insertion position, the first clamping head is clamped with the first clamping groove, the second clamping head is clamped with the second clamping groove, and the third clamping head is clamped with the third clamping groove. Through the clamping structures at three different positions, the positioning and fixing of the TPA part relative to the lower shell are realized, so that the TPA part can be fixed relative to the connector housing when it is just inserted or about to be pulled out, avoiding completely pulling out the PTA part and separating it from the connector housing, and avoiding the situation of loss of the TPA part.

[0026] In addition, when the TPA part is just inserted into the housing, it can be fixed relative to the connector, and the force can be applied and adjusted to the TPA part at this time. The force application direction to the TPA part is strictly adjusted to the second direction to ensure the reliability and accuracy of the subsequent insertion of the TPA part. It can avoid the wear between the TPA part and the lower shell caused by the deviation of the force application during the further insertion process, avoid the deformation of the TPA part, and further better protect the TPA part, ensuring the reliability and effectiveness of the limit of the TPA part to the wiring terminal. Description of the drawings

[0027] Figure 1 is a schematic structural diagram of the connector provided by the present invention;

[0028] Figure 2 is an exploded schematic diagram of the upper shell, the lower shell and the TPA part provided by the present invention;

[0029] Figure 3It is a schematic structural diagram of the upper shell provided by the present utility model;

[0030] Figure 4 It is an exploded schematic diagram of the lower shell and the TPA part from one perspective provided by the present utility model;

[0031] Figure 5 It is an exploded schematic diagram of the lower shell and the TPA part from another perspective provided by the present utility model;

[0032] Figure 6 It is a schematic diagram of the TPA part being inserted into the pre-locking position provided by the present utility model;

[0033] Figure 7 It is a schematic diagram of the TPA part being inserted into the final locking position provided by the present utility model.

[0034] In the figure:

[0035] 1. Upper shell; 11. First card slot; 12. Second through hole; 13. Fifth chuck;

[0036] 2. Lower shell; 21. Insertion slot; 211. Second card slot; 212. Third card slot; 213. Fourth card slot; 214. Fifth card slot; 215. Sixth card slot; 22. Jack; 23. First through hole;

[0037] 3. TPA part; 301. Main body; 302. Elastic arm; 31. First chuck; 32. Second chuck; 33. Third chuck; 34. Fourth chuck; 35. Limit slot; 36. Contact head;

[0038] 4. Sealing member. Specific embodiments

[0039] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the present utility model and do not limit the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] This embodiment provides a connector. Referring to Figures 1 to 7 As shown, the connector includes an upper shell 1, a lower shell 2 and a TPA member 3. The lower shell 2 is provided with a plug-in slot 21 along a first direction. The upper shell 1 is plugged into the plug-in slot 21. The wiring terminal can pass through the upper shell 1 and the plug-in slot 21 along the first direction. The side wall of the plug-in slot 21 along the second direction is provided with a jack 22. The TPA member 3 passes through the jack 22 and is inserted into the plug-in slot 21 to perform position constraint on the wiring terminal. The TPA member 3 is adapted to sequentially pass through an insertion position, a pre-locking position and a final locking position during the process of being inserted into the plug-in slot 21. One side of the TPA member 3 facing the upper shell 1 is provided with a first clamping head 31, and the upper shell 1 is correspondingly provided with a first clamping groove 11. One side of the TPA member 3 facing the lower shell 2 is provided with a second clamping head 32, and the bottom of the plug-in slot 21 is correspondingly provided with a second clamping groove 211. One side of the TPA member 3 along a third direction is provided with a third clamping head 33, and the side wall of the plug-in slot 21 along the third direction is correspondingly provided with a third clamping groove 212. When the TPA member 3 is in the insertion position, the first clamping head 31 is clamped with the first clamping groove 11, the second clamping head 32 is clamped with the second clamping groove 211, and the third clamping head 33 is clamped with the third clamping groove 212. The first direction, the second direction and the third direction are orthogonally arranged in pairs.

[0044] In this embodiment, the direction indicated by a in the drawings is the first direction, which is the insertion and extraction direction of the upper shell 1 relative to the lower shell 2, that is, the opening direction of the plug-in slot 21 and also the layout direction of the wiring terminal. The direction indicated by b is the second direction, which is the insertion and extraction direction of the TPA member 3 relative to the plug-in slot 21. The direction indicated by c is the third direction, and it is also the direction in which the PTA member can provide limit to the wiring terminal.

[0045] In this embodiment, the TPA member 3 is adapted to sequentially pass through the insertion position, the pre-locking position, and the final locking position during the process of being inserted into the insertion slot 21. The TPA member 3 will reach the insertion position before moving to the pre-locking position. Specifically, when the TPA member 3 is inserted to the insertion position, the first chuck 31 is engaged with the first card slot 11, the second chuck 32 is engaged with the second card slot 211, and the third chuck 33 is engaged with the third card slot 212. Through the three groups of engaging structures at different positions, the positioning and fixing of the TPA member 3 relative to the lower housing 2 are realized, enabling the TPA member 3 to remain fixed relative to the connector housing when it is just inserted or about to be pulled out, preventing the PTA member from being completely pulled out and separated from the connector housing, and avoiding the loss of the TPA member 3.

[0046] In addition, when the TPA member 3 is just inserted into the housing, it can be fixed relative to the connector. At this time, a force can be applied to the TPA member 3 for adjustment, and the force application direction to the TPA member 3 is strictly adjusted to the second direction to ensure the reliability and accuracy of the subsequent insertion of the TPA member 3. It can prevent the force application of the TPA member 3 from deviating during the further insertion process, resulting in wear between the TPA member 3 and the lower housing 2, and prevent the TPA member 3 from deforming. Furthermore, the TPA member 3 can be better protected, ensuring the reliability and effectiveness of the TPA member 3 in limiting the wiring terminals.

[0047] In this embodiment, the TPA member 3 includes a main body 301 and elastic arms 302 extending along the second direction and provided on the main body 301. The first chuck 31, the second chuck 32, and the third chuck 33 are respectively located on the elastic arms 302. Specifically, in this embodiment, the number of the elastic arms 302 is set to two. The two elastic arms 302 are spaced along the third direction. Specifically, the first chuck 31 is provided on one of the elastic arms 302, and the second chuck 32 and the third chuck 33 are provided on the other elastic arm 302.

[0048] In this embodiment, the main body 301 and the elastic arms 302 are integrally formed.

[0049] In this embodiment, a fourth chuck 34 is provided on one side of the TPA member 3 along the third direction, and a fourth card slot 213 is correspondingly provided on the side wall of the insertion slot 21 along the third direction. When the TPA member 3 is in the pre-locking position, the fourth chuck 34 is engaged with the fourth card slot 213. Specifically, the engaging cooperation between the fourth chuck 34 and the fourth card slot 213 can ensure that the TPA member 3 is reliably and stably fixed in the pre-locking position.

[0050] In this embodiment, a fifth card slot 214 is correspondingly provided on the side wall of the insertion slot 21 in the third direction. Along the second direction, the fourth card slot 213 is located between the third card slot 212 and the fifth card slot 214. When the TPA member 3 is in the final locked position, the fourth card head 34 is engaged with the fifth card slot 214. Specifically, the engagement between the fourth card head 34 and the fifth card slot 214 can ensure that the TPA member 3 is reliably and stably fixed in the final locked position.

[0051] Specifically, a row of first through holes 23 is arranged at the bottom of the insertion slot 21. A plurality of first through holes 23 in a single row are arranged at intervals along the second direction. The first through holes 23 are opened along the first direction, and the wiring terminals pass through the lower shell 2 through the first through holes 23. The TPA member 3 is provided with a limiting slot 35 corresponding to the single row of first through holes 23 along the second direction. The wiring terminals are adapted to abut against the opposite side walls of the limiting slot 35 when passing through the first through holes 23. Specifically, the opposite side walls of the limiting slot 35 in the third direction can reliably limit the wiring terminals. Cooperating with the fact that the wiring terminals themselves pass through the first through holes 23, the position of the wiring terminals can be reliably restricted.

[0052] Specifically, along the third direction, multiple rows of first through holes 23 are provided at the bottom of the insertion slot 21, and the TPA member 3 is provided with a plurality of limiting slots 35. The plurality of limiting slots 35 are arranged in one-to-one correspondence with the multiple rows of first through holes 23.

[0053] Further, the upper shell 1 is provided with a plurality of second through holes 12 arranged in one-to-one correspondence with the first through holes 23. The wiring terminals pass through the upper shell 1 through the second through holes 12. Specifically, the upper shell 1 is provided with multiple rows of second through holes 12. A plurality of second through holes 12 in a single row are arranged at intervals along the second direction. The multiple rows of first through holes 23 and the multiple rows of second through holes 12 are arranged in one-to-one alignment. A plurality of first through holes 23 in each row are arranged in one-to-one correspondence with a plurality of second through holes 12 in each row.

[0054] In this embodiment, a butt joint 36 is further provided on the side part of the TPA member 3 along the second direction. When the TPA member 3 is in the final locked position, the butt joint 36 abuts against the side wall of the insertion slot 21. By providing the butt joint 36, the butt joint 36 is adapted to reliably and effectively abut against the side wall of the insertion slot 21 when the TPA member 3 is in the final locked position, further realizing the limitation of the TPA member 3.

[0055] In this embodiment, a sealing member 4 is further provided between the upper shell 1 and the lower shell 2. The sealing member 4 is used to block the gap between the upper shell 1 and the lower shell 2. By providing the sealing member 4, it can be avoided that external dust and water vapor enter the insertion slot 21 and contact the wiring terminals. Ensure the reliability, safety and stability of the electrical connection.

[0056] Specifically, the upper shell 1 is arranged in a stepped shape along the first direction. The small end of the upper shell 1 is inserted into the insertion slot 21. The seal 4 is arranged in a ring shape and sleeved on the small end of the upper shell 1. Specifically, the large end and the small end of the upper shell 1 are connected through a stepped end face. The upper side of the seal 4 abuts against the grounding end face, and the lower side abuts against the outer edge of the insertion slot 21 of the lower shell 2.

[0057] In this embodiment, the upper shell 1 has a fifth chuck 13, and the side wall of the insertion slot 21 is correspondingly provided with a sixth card slot 215. The fifth chuck 13 is adapted to be inserted into the sixth card slot 215 when the upper shell 1 is inserted into the insertion slot 21 in place. The clamping fit between the sixth chuck and the sixth card slot 215 can realize the reliable fixation between the upper shell 1 and the lower shell 2 and prevent the upper shell 1 and the lower shell 2 from being accidentally disengaged.

[0058] In summary, the connector provided in this embodiment has a simple structure, can provide reliable and effective positioning for the TPA part 3 when it is just inserted, enables the TPA part 3 to be fixed relative to the connector housing when it is about to be pulled out, prevents the PTA part from being completely pulled out and separated from the connector housing, and avoids the situation of loss of the TPA part 3, with strong practicability.

[0059] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A connector, characterized in that: The invention comprises an upper shell (1), a lower shell (2) and a TPA component (3), wherein the lower shell (2) is provided with a plug-in slot (21) along a first direction, the upper shell (1) is plugged into the plug-in slot (21), and a connection terminal can pass through the upper shell (1) and the plug-in slot (21) along the first direction, and a plug-in hole (22) is provided on a side wall of the plug-in slot (21) along a second direction, and the TPA component (3) passes through the plug-in hole (22) and is inserted into the plug-in slot (21) to constrain the position of the connection terminal; The TPA component (3) is suitable for sequentially passing through an insertion position, a pre-locking position and a final locking position during the process of being inserted into the plug-in slot (21); a first clamping head (31) is provided on a side of the TPA component (3) facing the upper shell (1), and the upper shell (1) is correspondingly provided with a first clamping slot (11); a second clamping head (32) is provided on a side of the TPA component (3) facing the lower shell (2), and a second clamping slot (211) is correspondingly provided at the bottom of the plug-in slot (21); a third clamping head (33) is provided on a side of the TPA component (3) along a third direction, and a third clamping slot (212) is correspondingly provided on a side wall of the plug-in slot (21) along the third direction; When the TPA component (3) is located at the insertion position, the first clamping head (31) is clamped with the first clamping slot (11), the second clamping head (32) is clamped with the second clamping slot (211), and the third clamping head (33) is clamped with the third clamping slot (212); The first direction, the second direction and the third direction are arranged orthogonally in pairs.

2. The connector according to claim 1, characterized in that: The TPA component (3) comprises a main body (301) and an elastic arm (302) extending along a second direction and arranged on the main body (301); the first clamp (31), the second clamp (32) and the third clamp (33) are respectively located on the elastic arm (302).

3. The connector according to claim 1, characterized in that: A fourth clamping head (34) is provided on one side of the TPA component (3) along the third direction, and a fourth clamping slot (213) is correspondingly provided on the side wall of the insertion slot (21) along the third direction; When the TPA component (3) is located at the pre-locking position, the fourth clamping head (34) is clamped with the fourth clamping groove (213).

4. The connector according to claim 3, characterized in that: A fifth card slot (214) is correspondingly provided on the side wall of the plug-in slot (21) along the third direction, and along the second direction, the fourth card slot (213) is located between the third card slot (212) and the fifth card slot (214); When the TPA component (3) is located at the final locking position, the fourth clamping head (34) is clamped with the fifth clamping groove (214).

5. The connector according to claim 1, characterized in that: The bottom of the plug-in slot (21) is provided with first through holes (23) in a row, a plurality of the first through holes (23) in a single row are arranged at intervals along the second direction, the first through holes (23) are opened along the first direction, the connection terminals are passed through the lower shell (2) through the first through holes (23), and the TPA component (3) is provided with a limiting groove (35) corresponding to the first through holes (23) in a single row along the second direction; The connection terminal is suitable for abutting against two opposite groove walls of the limiting groove (35) when the first through hole (23) is penetrated.

6. The connector according to claim 5, characterized in that: The upper shell (1) is provided with a plurality of second through holes (12) arranged in one-to-one correspondence with the first through holes (23), and the connection terminals are passed through the upper shell (1) via the second through holes (12).

7. The connector according to claim 1, characterized in that: The TPA member (3) is further provided with an abutment head (36) on the side along the second direction; When the TPA component (3) is located at the final locking position, the abutment head (36) abuts against the side wall of the insertion slot (21).

8. The connector according to claim 1, characterized in that: A sealing member (4) is also provided between the upper shell (1) and the lower shell (2), and the sealing member (4) is used to seal the gap between the upper shell (1) and the lower shell (2).

9. The connector according to claim 8, characterized in that: The upper shell (1) is arranged in a stepped shape along a first direction, the small end of the upper shell (1) is plugged into the plug-in groove (21), and the sealing member (4) is arranged in an annular shape and sleeved on the small end of the upper shell (1).

10. The connector according to claim 1, characterized in that The upper shell (1) has a fifth clamping head (13), and the side wall of the plug-in slot (21) is correspondingly provided with a sixth clamping slot (215), and the fifth clamping head (13) is suitable for being inserted into the sixth clamping slot (215) when the upper shell (1) is plugged into place relative to the plug-in slot (21).

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