Combined connector

Abstract

The utility model discloses a combined connector, which comprises a TPA assembly, an inner sheath, a plurality of terminal assemblies installed inside the inner sheath, and an outer sheath at least partially sleeved outside the inner sheath, the TPA assembly with a preassembling position and a locking position is directly arranged on the inner sheath, when the TPA assembly is in the preassembling position, the TPA assembly is locked by the locking position, and the TPA assembly is locked by the locking position. One end, far away from the inner sheath, of the TPA assembly is flush with or lower than the outer surface of the inner sheath, so that a gap between the inner sheath and the outer sheath in the combined connector in which the inner sheath is wrapped by the outer sheath can be obviously reduced, and the inner sheath and the outer sheath are tightly attached and do not shake after being assembled; moreover, the TPA assembly is directly arranged on the inner sheath, so that compared with the existing connector which needs to be provided with TPA clamping grooves on the inner sheath and the outer sheath at the same time, the connector simplifies the mold structure, and ensures that the TPA assembly is smoothly and simply installed.

Description

Technical Field

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

[0002] For combined connectors with an outer sheath wrapped around an inner sheath, in order to ensure that the inner and outer sheaths fit tightly after assembly without shaking, the gap between the inner and outer sheaths is often designed to be very small. Considering that the existing terminal secondary locking assembly, i.e., TPA assembly, often has a pre-installation position that does not interfere with the terminal and a locking position for achieving secondary locking of the terminal, therefore, when the gap between the inner and outer sheaths is very small, it is impossible to set a TPA assembly with a pre-installation position and a locking position only on the inner sheath.

[0003] In some cases, the secondary locking method of the terminals of such connectors is generally to set the TPA component by simultaneously slotting the corresponding positions on the sides of the outer sheath and the inner sheath. On the one hand, this solution increases the complexity and cost of the mold and reduces stability. On the other hand, when assembling the TPA component, it is easy to cause the inaccurate slot positions of the inner and outer sheaths, resulting in poor insertion and difficult disassembly of the TPA during assembly. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a combined connector to solve the technical problems mentioned in the background technology.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a combined connector, which is connected with a mating connector, including a TPA component, an inner sheath, a plurality of terminal components installed inside the inner sheath, and an outer sheath at least partially sleeved on the outside of the inner sheath, the inner sheath is provided with a plurality of terminal holes corresponding to the plurality of terminal components one by one, and a plug-in cavity connected to the plurality of terminal holes, and a plug-in interface connected to the plug-in cavity is provided on one of the side walls of the inner sheath, and the TPA component is installed into the interior of the plug-in cavity through the plug-in interface;

[0006] The TPA component is snap-fitted with the inner wall of the plug-in cavity to respectively realize the positioning of the TPA component in the pre-installed position and the locked position, and when the TPA component is in the pre-installed position, the end of the TPA component away from the inner sheath is flush with or lower than the outer surface of the inner sheath.

[0007] In some embodiments, at least one adjustment column is provided on the end face of the TPA component facing the mating connector, and the inner sleeve has an adjustment groove for guiding the movement of the adjustment column. The TPA component can be switched between the pre-installed position and the locked position by moving the adjustment column in the adjustment groove.

[0008] In some embodiments, the TPA assembly is plate-shaped, and locking holes corresponding to a plurality of terminal holes are provided through the end face of the TPA assembly. When the adjustment column is moved to put the TPA assembly in the locked position, the inner wall of the locking hole is clamped to the terminal assembly to achieve secondary locking of the plurality of terminal assemblies.

[0009] In some embodiments, the terminal assembly includes a conductive segment, a fixed segment, and a crimping segment that are integrally arranged, and the fixed segment has a recessed area that matches the inner wall of the locking hole.

[0010] In some embodiments, a primary lock cantilever is also formed on the fixed section, and a primary lock groove that is snap-fitted with the primary lock cantilever is formed on the inner wall of the inner sleeve. After the terminal assembly is installed into the terminal hole, the primary lock cantilever is snap-fitted into the primary lock groove to achieve primary locking of the terminal assembly.

[0011] In some embodiments, two adjusting columns are provided along the installation direction of the TPA assembly. When the TPA assembly is in the locked position, the adjusting column located at the front side abuts against the bottom wall of the adjusting groove.

[0012] In some embodiments, a snap-in groove is provided on the inner wall of the plug-in cavity, and a locking portion and a pre-installation portion cooperating with the snap-in groove are sequentially provided on the side wall of the TPA assembly along the loading direction of the TPA assembly. When the pre-installation portion is loaded into the snap-in groove, the TPA assembly is in the pre-installation position, and when the pre-installation portion and the locking portion are jointly loaded into the snap-in groove, the TPA assembly is in the locked position.

[0013] In some embodiments, the snap-in groove is disposed through the side wall of the inner sheath.

[0014] In some embodiments, the outer sheath and the inner sheath are connected by a detachable snap-fit ​​connection, and a sealing ring is provided between the two and is sleeved on the outer side of the inner sheath.

[0015] In some embodiments, the plane where the plug-in cavity is located is perpendicular to the axial direction of the terminal assembly.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the combined connector provided by the utility model directly sets the TPA component with a pre-installation position and a locking position on the inner sheath. When the TPA component is in the pre-installation position, the end of the TPA component away from the inner sheath is flush with or lower than the outer surface of the inner sheath, thereby significantly reducing the gap between the inner and outer sheaths in the combined connector in which the outer sheath wraps the inner sheath, so as to ensure that the inner and outer sheaths fit tightly after assembly without shaking; moreover, the TPA component is directly set on the inner sheath, which simplifies the mold structure compared to the problem that the existing connectors of this type need to open TPA slots on both the inner and outer sheaths at the same time, ensuring that the TPA component can be installed smoothly and simply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] Figure 1 A schematic diagram of the structure of the combined connector provided by the utility model;

[0019] Figure 2 for Figure 1 An exploded schematic diagram of the combined connector shown;

[0020] Figure 3 This is a schematic diagram of the fit between the TPA assembly and the inner sheath after the two are fully installed;

[0021] Figure 4 for Figure 1 A cross-sectional view of the combined connector shown;

[0022] Figure 5 It is a schematic diagram of the state of the combined connector when the TPA component is in the pre-installed position;

[0023] Figure 6 It is a schematic diagram of the state of the combined connector when the TPA component is in the locked position;

[0024] Figure 7 It is a schematic diagram of the positional relationship between the TPA component and the terminal component when the TPA component is in the locked position;

[0025] Figure 8 for Figure 1 A schematic diagram of the structure of the TPA component in the combined connector shown;

[0026] Fig. 9 for Figure 1 A schematic diagram of the structure of the terminal assembly in the combined connector is shown.

[0027] The following are marked in the figure:

[0028] 10. Outer sheath;

[0029] 20, inner sheath; 201, terminal hole; 202, plug-in cavity; 203, plug-in interface; 204, adjustment slot; 205, one-time lock slot; 206, plug-in slot;

[0030] 30. TPA assembly; 301. adjustment column; 302. locking hole; 303. locking part; 304. pre-installation part;

[0031] 40. Terminal assembly; 401. Conductive section; 402. Fixed section; 403. Crimping section; 404. Concave area; 405. One-time locking cantilever;

[0032] 50. Sealing ring;

[0033] 60. Loading direction of TPA components. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] like Figure 1-Figure 9 As shown, a combined connector is connected with a mating connector, comprising a TPA assembly 30, an inner sheath 20, a plurality of terminal assemblies 40 installed inside the inner sheath 20, and an outer sheath 10 at least partially sleeved on the outside of the inner sheath 20. The outer sheath 10 and the inner sheath 20 are connected by a detachable snap-on connection, and a sealing ring 50 sleeved on the outside of the inner sheath 20 is provided between the two. When the combined connector is connected with the mating connector, the sealing ring 50 is used to achieve effective sealing between the two, so as to improve the sealing performance of the combined connector. Figure 2-Figure 4 As shown, the inner sheath 20 is provided with a plurality of terminal holes 201 corresponding to the plurality of terminal assemblies 40 in a one-to-one manner, and a plug-in cavity 202 connected to the plurality of terminal holes 201, along the axial direction of the terminal assembly 40. Fig. 9 As shown, the terminal assembly 40 includes an integrally arranged conductive section 401, a fixed section 402 and a crimping section 403. The fixed section 402 has a recessed area 404 that matches the inner wall of the locking hole 302 of the TPA assembly 30. The fixed section 402 is also formed with a primary lock cantilever 405. The inner wall of the inner sheath 20 is formed with a primary lock slot 205 that is snap-fitted with the primary lock cantilever 405. After the terminal assembly 40 is installed in the terminal hole 201, the primary lock cantilever 405 is snap-fitted into the primary lock slot 205 to achieve a primary locking of the terminal assembly 40. For details, please refer to Figure 4 .

[0039] like Figure 2 As shown, one of the side walls of the inner sheath 20 is provided with an insertion port 203 connected to the insertion cavity 202, the plane where the insertion cavity 202 is located is perpendicular to the axial direction of the terminal assembly 40, and the TPA assembly 30 is installed into the interior of the insertion cavity 202 through the insertion port 203; the TPA assembly 30 is engaged with the inner wall of the insertion cavity 202 to respectively realize the positioning of the TPA assembly 30 in the pre-installed position and the locked position, and when the TPA assembly 30 is in the pre-installed position, the end of the TPA assembly 30 away from the inner sheath 20 is flush with or lower than the outer surface of the inner sheath 20, for details, please refer to Figure 3 , thereby significantly reducing the gap between the inner and outer sheaths in the combined connector in which the outer sheath wraps the inner sheath, so as to ensure that the inner and outer sheaths fit tightly after assembly without shaking; moreover, the TPA component 30 is directly arranged on the inner sheath 20, which simplifies the mold structure compared to the problem that the existing connectors of this type need to open TPA card slots on both the inner and outer sheaths at the same time, ensuring that the TPA component can be installed smoothly and simply.

[0040] In one embodiment, if Figure 1-Figure 3 , Figure 8 As shown, at least one adjustment column 301 is provided on the end face of the TPA component 30 facing the mating connector, and the inner sheath 20 has an adjustment groove 204 for guiding the movement of the adjustment column 301. The cross-section of the adjustment column 301 is generally rectangular or circular, so as to improve the stability of the adjustment column 301 when moving in the adjustment groove 204. The TPA component can be switched between the pre-installed position and the locked position by moving the adjustment column 301 in the adjustment groove 204. Furthermore, the TPA component 30 is in the shape of a plate, and locking holes 302 corresponding to a plurality of terminal holes 201 are provided on the end face of the TPA component 30. When the adjustment column 301 is moved to put the TPA component 30 in the locked position, the inner wall of the locking hole 302 is snapped to the terminal component 40, specifically to the recessed area 404 of the terminal component 40. For details, please refer to Figure 7, thereby achieving secondary locking of several terminal assemblies 40. Further, two adjusting columns 301 are specifically provided along the loading direction 60 of the TPA assembly. When the TPA assembly 30 is in the locking position, the adjusting column 301 located on the front side abuts against the bottom wall of the adjusting groove 204, thereby preventing the operator from continuing to push the TPA assembly 30 forward and causing damage to the TPA assembly 30 and the terminal assembly 40 when the TPA assembly 30 is already in the locking position.

[0041] In some embodiments, Figure 2 and Figure 3 As shown, the inner wall of the plug-in cavity 202 is provided with a snap-in groove 206, and the side wall of the TPA assembly 30 is provided with a locking portion 303 and a pre-installation portion 304 that match the snap-in groove 206 in sequence along the TPA assembly loading direction 60. When the pre-installation portion 304 is loaded into the snap-in groove 206, the TPA assembly 30 is in the pre-installation position, and when the pre-installation portion 304 and the locking portion 303 are loaded into the snap-in groove 206 together, the TPA assembly 30 is in the locking position. For details, please refer to Figure 5 and Figure 6 . Further, if Figure 2 As shown, in order to facilitate observation and determination of the installation position of the TPA assembly 30, a snap-in groove 206 is set through the side wall of the inner sheath 20. The installation position of the TPA assembly 30 is confirmed by observing the position of the pre-installed portion 304 and the locking portion 303 installed in the snap-in groove 206 at the snap-in groove 206, so as to further prevent the TPA assembly 30 from being damaged due to over-pushing of the TPA assembly 30.

[0042] The assembly process of the combined connector of the utility model is as follows:

[0043] (1) First, install the TPA assembly 30 into the interior of the plug-in cavity 202 through the plug-in port 203, and move the adjustment column 301 to place the TPA assembly 30 in the pre-installed position;

[0044] (2) Then, a plurality of terminal assemblies 40 are correspondingly installed into a plurality of terminal holes 201 inside the inner sheath 20. After the terminal assemblies 40 are installed into the terminal holes 201, the primary lock cantilever 405 provided on the terminal assemblies 40 is snapped into the primary lock slot 205 of the inner sheath 20 to achieve a primary locking of the terminal assemblies 40;

[0045] (3) Then install the outer sleeve 10 to the outside of the inner sleeve 20, and continue to turn the adjustment column 301 to put the TPA assembly 30 in the locked position. At this time, the inner wall of the locking hole 302 on the TPA assembly 30 is clamped into the recessed area 404 of the terminal assembly 40 to achieve secondary locking of several terminal assemblies 40.

[0046] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A combined connector, which is connected with a mating connector, comprises a TPA assembly, an inner sheath, a plurality of terminal assemblies installed inside the inner sheath, and an outer sheath at least partially sleeved outside the inner sheath, wherein the inner sheath is provided with a plurality of terminal holes corresponding to the plurality of terminal assemblies in a one-to-one manner along the axial direction of the terminal assembly, and an insertion cavity connected to the plurality of terminal holes, characterized in that: One of the side walls of the inner sheath is provided with an insertion port connected to the insertion cavity, and the TPA assembly is installed into the interior of the insertion cavity through the insertion port; The TPA component is snap-fitted with the inner wall of the plug-in cavity to respectively realize the positioning of the TPA component in the pre-installed position and the locked position, and when the TPA component is in the pre-installed position, the end of the TPA component away from the inner sheath is flush with or lower than the outer surface of the inner sheath.

2. A combined connector according to claim 1, characterized in that: At least one adjustment column is arranged on the end face of the TPA component facing the mating connector, and the inner sleeve has an adjustment groove for guiding the movement of the adjustment column. The TPA component can be switched between the pre-installed position and the locked position by moving the adjustment column in the adjustment groove.

3. A combined connector according to claim 2, characterized in that: The TPA component is plate-shaped, and locking holes corresponding to a plurality of terminal holes are provided through the end surface of the TPA component. When the adjustment column is moved to put the TPA component in the locked position, the inner wall of the locking hole is clamped to the terminal component to achieve secondary locking of the plurality of terminal components.

4. A combined connector according to claim 3, characterized in that: The terminal assembly comprises a conductive section, a fixed section and a crimping section which are integrally arranged, and the fixed section has a recessed area which matches with the inner wall of the locking hole.

5. A combined connector according to claim 4, characterized in that: A primary lock cantilever is also formed on the fixed section, and a primary lock slot that is engaged with the primary lock cantilever is formed on the inner wall of the inner sleeve. After the terminal assembly is installed in the terminal hole, the primary lock cantilever is engaged with the primary lock slot to achieve primary locking of the terminal assembly.

6. A combined connector according to claim 2, characterized in that: Two adjusting columns are provided along the installation direction of the TPA assembly. When the TPA assembly is in the locked position, the adjusting column located at the front side abuts against the bottom wall of the adjusting groove.

7. A combined connector according to claim 1, characterized in that: The inner wall of the plug-in cavity is provided with a snap-in groove, and the side wall of the TPA component is provided with a locking part and a pre-installation part matching the snap-in groove in sequence along the installation direction of the TPA component. When the pre-installation part is installed into the snap-in groove, the TPA component is in the pre-installation position, and when the pre-installation part and the locking part are installed into the snap-in groove together, the TPA component is in the locked position.

8. A combined connector according to claim 7, characterized in that: The clamping groove is arranged through the side wall of the inner sheath.

9. A combined connector according to claim 1, characterized in that: The outer sheath and the inner sheath are connected by a detachable snap-fit ​​connection, and a sealing ring sleeved on the outer side of the inner sheath is arranged between the two.

10. A combined connector according to claim 1, characterized in that: The plane where the plug-in cavity is located is vertically arranged to the axial direction of the terminal assembly.

Images