A waterproof wire harness crimp terminal structure for 0.5x0.4 pin

Abstract

The utility model relates to a waterproof wire harness crimp terminal structure for matching 0.5*0.4 pin, including pin matching assembly and wire crimp assembly, the section of pin matching assembly is asymmetric trapezoid, plays effective mistake proofing when loading into sheath cavity, avoids terminal installation direction error, pin matching assembly includes main contact spring, protection tongue piece, support tongue piece, lower contact boss, main contact spring is located in the middle part of terminal, one side of main contact spring sets up support tongue piece, and lower contact boss is equipped below, protection tongue piece is equipped above main contact spring, can provide good normal pressure when terminal is used with 0.5*0.4 pin matching, ensures the continuity and stability of circuit connection. Compared with prior art, the utility model has the advantages of convenient plugging, only needs small plugging force, light weight, convenient installation etc.

Description

Technical Field

[0001] This utility model relates to the field of wire harness crimping terminal technology, and in particular to a waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins. Background Technology

[0002] Currently, the female terminals of low-current connectors on the market mainly use 0.64 terminals. These terminals are typically stamped from copper alloy with a thickness of 0.25mm, resulting in heavy weight and high cost. Furthermore, the insertion and extraction force of a single-pin terminal is relatively large, which cannot meet the insertion and extraction force requirements of high-pin connectors.

[0003] CN201721870473.2 discloses a wire harness crimp terminal, including an insertion part and a crimping part. The crimping part is used to connect with a wire. The cross-section of the insertion part is trapezoidal or rectangular. When the insertion part is inserted into the mating hole of the substrate fixing terminal, the fastening screw on the substrate fixing terminal is screwed into the mating hole and presses against the upper surface of the insertion part. Since the cross-section of the insertion part is trapezoidal or rectangular, the crimping contact area between the fastening screw and the insertion part can be effectively increased, making it difficult for the insertion part to come out of the mating hole, thereby achieving a tight connection between the wire harness crimp terminal and the substrate fixing terminal. However, when the pin is misaligned, it is easy to cause poor contact, the insertion and extraction force is large, and it is easy to wear.

[0004] Therefore, it is necessary to develop smaller terminals to meet the market demand for miniaturized and lightweight connectors. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] This utility model provides a waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins, including a pin mating assembly and a wire crimping assembly;

[0008] The cross-section of the pin mating assembly is asymmetrical trapezoidal; this effectively prevents errors when the pin is inserted into the sheath cavity, avoiding incorrect terminal installation orientation. The pin mating assembly includes a main contact spring, a protective tongue, a supporting tongue, and a lower contact boss. The main contact spring is located in the middle of the terminal, a supporting tongue is provided on one side of the main contact spring, and a lower contact boss is located directly below it. The protective tongue is located above the main contact spring. This provides good positive pressure when the terminal is mated with a 0.5*0.4 pin, ensuring the continuity and stability of the circuit connection.

[0009] The cooperation between the support tongue and the lower contact boss disperses the insertion and extraction force to the terminal body, reducing the risk of plastic deformation of the spring.

[0010] Furthermore, the main contact spring is arched, and the arch of the main contact spring and the pin form the main contact point.

[0011] Furthermore, the insert is provided with a waterproof protective sleeve on the mating assembly.

[0012] Furthermore, the waterproof sheath is a sealing gasket.

[0013] Furthermore, the end body of the terminal structure is provided with a first locking structure, which is used to form a locking structure with the spring tongue of the waterproof sheath.

[0014] Furthermore, the terminal structure has a second locking structure at its tail end, which is used to form a locking structure with the TPA (Temporary Apron Assembly Apparatus) of the waterproof sheath. The TPA is a secondary locking structure for the terminal.

[0015] Furthermore, the terminal structure is a copper alloy terminal structure. The terminals are made of 0.15mm thick copper alloy through stamping, which effectively reduces production costs and meets the requirements of lightweight production while satisfying circuit connection requirements.

[0016] Furthermore, the thickness of the mating component is 0.15 mm.

[0017] Furthermore, after the pin is inserted into the pin mating assembly, the lower part of the protective tongue abuts against the main contact spring.

[0018] Furthermore, the wire crimping assembly includes: a conductor crimping area, an insulation layer crimping area, and a transition area. The transition area is connected to the pin mating assembly. The insulation layer crimping area is a symmetrically arranged wing-shaped pressure plate, and the conductor crimping area is a U-shaped groove.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) Easy to insert and remove, requiring only a small insertion and removal force. The main contact spring, protective tongue, and supporting tongue form a graded load-bearing structure, making the contact pressure distribution more uniform. The protective tongue and supporting tongue share the load of the main contact spring.

[0021] (2) Lightweight. The terminals are made of copper alloy with a thickness of 0.15mm by stamping, which can effectively reduce production costs and meet the requirements of lightweight production while meeting the circuit connection requirements.

[0022] (3) Easy to install. It has a mis-insertion structure, and the asymmetrical trapezoidal pins achieve zero-error installation in the mating area through geometric interference. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a waterproof wire harness crimp terminal for use with 0.5×0.4 pins;

[0024] Figure 2 A structural schematic diagram (sectional view) of a waterproof wire harness crimp terminal structure for use with 0.5×0.4 pins;

[0025] Figure 3 This is a schematic diagram of the anti-misalignment structure of the waterproof wire harness crimp terminal structure and the waterproof sheath used for mating 0.5×0.4 pins;

[0026] Figure 4 This is a schematic diagram of the locking structure used for the crimping terminal structure of a waterproof wire harness with 0.5×0.4 pins;

[0027] Figure 5 This is a schematic diagram of the structure of the waterproof wire harness crimp terminal used to mate with 0.5×0.4 pins and the pins.

[0028] Reference numerals in the attached figures: 1-Pin mating assembly; 2-Wire crimping assembly; 3-Main contact spring; 4-Protective tongue; 5-Supporting tongue; 6-Lower contact boss; 7-Waterproof sheath; 8-First locking structure; 9-Second locking structure; 10-Pin. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0030] Example 1

[0031] This embodiment provides a waterproof wire harness crimping terminal structure for use with 0.5×0.4 pins, such as... Figure 1-5 As shown, it includes a pin mating assembly 1 and a wire crimping assembly 2;

[0032] The cross-section of the pin mating assembly 1 is asymmetrical trapezoidal; it effectively prevents errors when inserted into the sheath cavity, avoiding incorrect terminal installation direction. The pin mating assembly 1 includes a main contact spring 3, a protective tongue 4, a supporting tongue 5, and a lower contact boss 6. The main contact spring 3 is located in the middle of the terminal, the supporting tongue 5 is provided on one side of the main contact spring 3, and the lower contact boss 6 is located directly below it. The protective tongue 4 is located above the main contact spring 3. When the terminal is mated with a 0.5*0.4 pin, it can provide good positive pressure, ensuring the continuity and stability of the circuit connection.

[0033] The cooperation between the support tongue 5 and the lower contact boss 6 disperses the insertion and extraction force to the terminal body, reducing the risk of plastic deformation of the spring.

[0034] Example 2

[0035] This embodiment provides a waterproof wire harness crimping terminal structure for use with 0.5×0.4 pins, such as... Figure 1-5 As shown, it includes a pin mating assembly 1 and a wire crimping assembly 2;

[0036] The cross-section of the pin mating assembly 1 is asymmetrical trapezoidal; it effectively prevents errors when inserted into the sheath cavity, avoiding incorrect terminal installation direction. The pin mating assembly 1 includes a main contact spring 3, a protective tongue 4, a supporting tongue 5, and a lower contact boss 6. The main contact spring 3 is located in the middle of the terminal, the supporting tongue 5 is provided on one side of the main contact spring 3, and the lower contact boss 6 is located directly below it. The protective tongue 4 is located above the main contact spring 3. When the terminal is mated with a 0.5*0.4 pin, it can provide good positive pressure, ensuring the continuity and stability of the circuit connection.

[0037] The cooperation between the support tongue 5 and the lower contact boss 6 disperses the insertion and extraction force to the terminal body, reducing the risk of plastic deformation of the spring.

[0038] In a specific embodiment, the main contact spring 3 is arched, and the arch top of the main contact spring 3 forms the main contact point with the insert pin 10.

[0039] In a specific embodiment, the fitting assembly 1 is provided with a waterproof protective sleeve 7.

[0040] In a specific embodiment, the waterproof sheath 7 is a sealing gasket.

[0041] In a specific embodiment, the end body of the terminal structure is provided with a first locking structure 8, which is used to form a locking structure with the spring tongue of the waterproof sheath 7.

[0042] In a specific embodiment, a second locking structure 9 is provided at the tail of the terminal structure. The second locking structure 9 is used to form a locking structure with the assembly TPA of the waterproof sheath 7. The TPA is a secondary locking structure for the terminal.

[0043] In this specific implementation, the terminal structure is a copper alloy terminal structure. The terminal is made of 0.15mm thick copper alloy through stamping, which effectively reduces production costs and meets the requirements of lightweight production while satisfying circuit connection requirements.

[0044] In a specific embodiment, the thickness of the fitting assembly 1 is 0.15 mm.

[0045] In a specific embodiment, after the pin 10 is inserted into the pin mating assembly 1, the lower part of the protective tongue 4 abuts against the main contact spring 3.

[0046] In a specific embodiment, the wire crimping assembly 2 includes: a conductor crimping area, an insulation layer crimping area, and a transition area. The transition area is connected to the pin mating assembly 1. The insulation layer crimping area is a symmetrically arranged wing-shaped pressure plate, and the conductor crimping area is a U-shaped groove.

[0047] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0048] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins, characterized in that, It includes a pin mating assembly (1) and a wire crimping assembly (2); The cross-section of the pin fitting assembly (1) is an asymmetrical trapezoid; the pin fitting assembly (1) includes a main contact spring (3), a protective tongue (4), a supporting tongue (5), and a lower contact boss (6); the main contact spring (3) is located in the middle of the terminal, a supporting tongue (5) is provided on one side of the main contact spring (3), and a lower contact boss (6) is provided directly below it; the protective tongue (4) is located above the main contact spring (3).

2. The waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, The main contact spring (3) is arched, and the arch top of the main contact spring (3) and the insert (10) form the main contact point.

3. The waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, The fitting assembly (1) is provided with a waterproof sleeve (7).

4. The waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 3, characterized in that, The waterproof sheath (7) is a sealing gasket.

5. A waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 3, characterized in that, The terminal structure has a first locking structure (8) at its end, which is used to form a locking structure with the spring of the waterproof sheath (7).

6. A waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 3, characterized in that, The terminal structure is provided with a second locking structure (9) at the tail end. The second locking structure (9) is used to form a locking structure with the assembly TPA of the waterproof sheath (7).

7. The waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, The terminal structure is a copper alloy terminal structure.

8. The waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, The thickness of the fitting assembly (1) is 0.15 mm.

9. A waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, After the pin (10) is inserted into the pin mating assembly (1), the lower part of the protective tongue (4) abuts against the main contact spring (3).

10. A waterproof wire harness crimping terminal structure for mating 0.5×0.4 pins according to claim 1, characterized in that, The wire crimping assembly (2) includes: a conductor crimping area, an insulation layer crimping area, and a transition area. The transition area is connected to the pin mating assembly (1). The insulation layer crimping area is a symmetrically arranged wing-shaped pressure plate, and the conductor crimping area is a U-shaped groove.

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