A jacket integrated with a tpa small-sized connector
By integrating the sheath and TPA into one unit, the space constraints and increased costs caused by using separate TPA structures in connectors are solved. This achieves miniaturization and improved stability of the connector, prevents the risk of terminals not being properly inserted, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING CHANGDECHENG ELECTRONIC CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-26
AI Technical Summary
In existing connectors, the TPA structure and the sheath are used separately, which leads to space constraints, increased costs, and the risk of terminals not being properly inserted, making it difficult to meet the requirements for terminal anti-retraction locking.
The sheath and TPA are integrated into one design. The free end of the TPA is connected to the sheath by snapping. The TPA rib is pressed down on the front side of the M tube to prevent the terminal from not being inserted properly. The connection is made stable with the mounting plate by a snap.
This technology enables connector miniaturization and weight reduction, lowers costs, effectively prevents the risk of terminals not being properly inserted, and improves connection stability and convenience.
Smart Images

Figure CN224418060U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of connector technology, specifically a miniaturized connector that integrates a sheath and a TPA. Background Technology
[0002] In connectors, to achieve a higher level of terminal anti-retraction performance, a terminal position assurance (TPA) structure is typically used to re-lock the terminals against retraction.
[0003] In common connectors, the TPA structure consists of a TPA component inserted from the side wall, front end, or rear end of the sheath. After insertion, the TPA component abuts against the corresponding edge of the terminal, thereby increasing the terminal's anti-retraction retention force. However, in the use of these common types of TPA components, the sheath and TPA are separate and connected by mutual assembly. This general connection method has space limitations, increases costs, and carries the risk of the terminal not being fully inserted, as well as insufficient retention force, making it difficult to meet the requirements. Utility Model Content
[0004] The purpose of this invention is to provide a miniaturized connector that integrates a sheath and a TPA, in order to solve the problems mentioned in the background art.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A miniaturized connector integrating a sheath and a TPA includes a sheath, two terminals symmetrically inserted at the front end of the sheath, and a TPA rotatably mounted at the front end of the top of the sheath for fixing the two terminals. The free end of the TPA is engaged with the rear end of the top of the sheath.
[0007] Preferably, the free end of the TPA is provided with a buckle, and the top rear end of the sheath is provided with a hanging platform, and the buckle is fastened to the hanging platform.
[0008] Preferably, two through slots are symmetrically formed on the front side of the sheath, and the front end of the terminal is inserted into the corresponding through slot.
[0009] Preferably, the terminal has an M-tube at its rear end and an elastic tongue in the through groove. The M-tube slides from the rear and front edge of the elastic tongue until it engages with the elastic tongue at its front end.
[0010] Preferably, both ends of the rear side of the TPA are provided with TPA ribs, the TPA ribs are pressed down through the top wall of the corresponding side through-channel groove, and the lower end of the TPA ribs presses against the front side of the M tube.
[0011] Preferably, the top two ends of the sheath are provided with several anti-fooling ribs.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0013] In this utility model, the overall structure is simple, and the sheath and TPA adopt an integrated design, which enables the connector to be miniaturized to reduce the space required and the weight to be reduced. At the same time, one end of the TPA is rotatably connected to the sheath, and the other end is snapped into the sheath, which facilitates the opening and closing of the TPA. In addition, the lower end of the TPA rib presses against the front side of the M tube to prevent the risk of the terminal not being inserted in place, which saves costs and makes it more convenient to use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention before fastening;
[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention after fastening;
[0016] Figure 3 This is a cross-sectional view of the present invention after fastening;
[0017] Figure 4 This is a schematic diagram of the sheath structure of this utility model. Figure 1 ;
[0018] Figure 5 This is a schematic diagram of the sheath structure of this utility model. Figure 2 ;
[0019] Figure 6 This is a schematic diagram of the terminal structure of this utility model;
[0020] Figure 7 This is a cross-sectional view of the present invention before it is fastened;
[0021] Figure 8 This is a schematic diagram of the internal structure of the present invention;
[0022] Figure 9 This is a schematic diagram of the fastening process of this utility model;
[0023] In the diagram: 1. Sheath; 1-1. Cable tray; 1-2. TPA; 1-3. Clip; 1-4. Elastic tongue; 1-5. Hanging platform; 1-6. Anti-fooling rib; 1-7. TPA rib; 2. Terminal; 2-1. M-tube. Detailed Implementation
[0024] The specific embodiments of this utility model are described in detail below.
[0025] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values are listed as 1 and 2, and the maximum range values are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.
[0026] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.
[0027] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.
[0028] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.
[0029] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.
[0030] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.
[0031] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.
[0032] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.
[0033] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0035] Example:
[0036] A miniaturized connector integrating the sheath and TPA, such as Figure 1-9 As shown, it includes a sheath 1, with two terminals 2 symmetrically inserted at the front end of the sheath 1, and a TPA1-2 rotatably provided at the front end of the top of the sheath 1 for fixing the two terminals 2. The free end of the TPA1-2 is engaged with the rear end of the top of the sheath 1.
[0037] In one possible implementation, the free end of TPA1-2 is provided with a buckle 1-3, and the top rear end of the sheath 1 is provided with a hanging platform 1-5, with the buckle 1-3 fastened to the hanging platform 1-5.
[0038] In one possible implementation, two through slots 1-1 are symmetrically formed on the front side of the sheath 1, and the front end of the terminal 2 is inserted into the corresponding through slot 1-1.
[0039] In one possible implementation, the terminal 2 has an M-tube 2-1 at its rear end and an elastic tongue 1-4 in the wire groove 1-1. The M-tube 2-1 slides from the rear and front edge of the elastic tongue 1-4 until the front end of the M-tube 2-1 engages with the elastic tongue 1-4.
[0040] In one possible implementation, TPA ribs 1-7 are provided at both ends of the rear side of TPA1-2. The TPA ribs 1-7 are pressed down through the top wall of the corresponding side through-channel groove 1-1, and the lower end of the TPA ribs 1-7 presses against the front side of the M tube 2-1.
[0041] In one possible implementation, the top two ends of the sheath 1 are provided with a number of anti-misfit ribs 1-6, and the sheath 1 is designed with anti-misfit ribs 1-6 to ensure correct adaptation with the adapter end.
[0042] In one possible implementation, the sheath 1 is designed with TPA1-2 to insert the terminal 2 into the through groove 1-1. If the terminal is not inserted properly, the pressing TPA rib 1-7 will press down on the M tube 2-1 of the terminal 2, thus preventing it from being properly pressed down and engaged. This effectively prevents the terminal from not being inserted properly, thereby reducing the risk in the assembly process. The TPA buckle 1-3 is fastened to the hanging platform 1-5 on the sheath to achieve engagement. After engagement, the terminal holding force is enhanced.
[0043] By adopting the above technical solution:
[0044] The sheath 1 is designed with a terminal through-slot 1-1 for inserting the terminal. An elastic tongue 1-4 is designed inside the through-slot 1-1 to engage with the terminal M-tube mounting platform 2-1 to prevent the terminal from retracting. The sheath 1 also features a TPA 1-2. If the terminal 2 is not fully inserted into the through-slot 1-1, the downward-pressing TPA rib 1-7 will press against the terminal M-tube 2-1, preventing proper engagement and effectively preventing the terminal 2 from being improperly inserted, thus reducing assembly risks. The TPA latch 1-3 engages with the mounting platform 1-5 on the sheath to achieve a secure connection, enhancing terminal retention. The sheath also features a foolproof rib 1-6 to ensure correct mating with the adapter. The simple structure, with the sheath and TPA integrated, allows for connector miniaturization, reducing space requirements, weight, and the risk of improper terminal insertion, while also saving costs.
[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A miniaturized connector integrating a sheath and a TPA, characterized in that: Includes a sheath (1), with two terminals (2) symmetrically inserted at the front end of the sheath (1), and a TPA (1-2) rotatably provided at the front end of the top of the sheath (1) for fixing the two terminals (2), and the free end of the TPA (1-2) engaging with the rear end of the top of the sheath (1).
2. The miniaturized connector integrating the sheath and TPA as described in claim 1, characterized in that: The free end of the TPA (1-2) is provided with a buckle (1-3), and the top rear end of the sheath (1) is provided with a hanging platform (1-5), and the buckle (1-3) is fastened to the hanging platform (1-5).
3. The miniaturized connector integrating the sheath and TPA as described in claim 1, characterized in that: The sheath (1) has two symmetrical through slots (1-1) on its front side, and the front end of the terminal (2) is inserted into its corresponding through slot (1-1).
4. The miniaturized connector integrating the sheath and TPA as described in claim 3, characterized in that: The terminal (2) has an M tube (2-1) at its rear end and an elastic tongue (1-4) in the through groove (1-1). The M tube (2-1) slides from the rear and front elastic tongue (1-4) until the front end of the M tube (2-1) engages with the elastic tongue (1-4).
5. The miniaturized connector integrating the sheath and TPA as described in claim 1, characterized in that: Both ends of the rear side of the TPA (1-2) are provided with TPA ribs (1-7). The TPA ribs (1-7) are pressed down through the top wall of the corresponding side through groove (1-1). The lower end of the TPA ribs (1-7) presses against the front side of the M tube (2-1).
6. The miniaturized connector integrating the sheath and TPA as described in claim 1, characterized in that: The top two ends of the sheath (1) are provided with several anti-fouling ribs (1-6).