A wire harness crimp terminal structure for a 1.2 x 0.6 pin

Abstract

The utility model relates to a kind of wire harness crimping terminal structures for 1.2*0.6 pin matching, including pin matching assembly and wire crimping assembly;The pin matching assembly includes contact spring and the shell being arranged at the outside of the contact spring;The contact spring includes two pairs of symmetrically inwardly curved cantilever beams, each pair of cantilever beams includes upper cantilever beam and lower cantilever beam, provides four-point contact for pin.Greatly improve contact stability and reliability.Compared with prior art, the utility model has the advantages of increasing cross-sectional area, improving current-carrying capacity, improving contact reliability, improving shock resistance, and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of wire harness crimp terminal technology, and in particular to a wire harness crimp terminal structure for mating 1.2×0.6 pins. Background Technology

[0002] Currently, the female terminals of low-current connectors on the market mainly use 0.64 terminals, which are mainly used in signal transmission, sensors, and low-voltage control circuits. Their smaller size is suitable for applications that are sensitive to space and weight.

[0003] With the continuous development of new energy vehicles, automotive wiring harnesses have higher current carrying capacity requirements, such as auxiliary power supplies and small and medium power equipment. Therefore, automotive connector female terminals adopt 1.2 terminals, which are wire harness crimp terminals used to mate with 1.2×0.6 pins. The increased cross-sectional area of ​​1.2 terminals can reduce resistance and heat generation, improve current carrying capacity (about 2-3 times that of 0.64 terminals), and enhance mechanical strength.

[0004] Problems with existing technology:

[0005] 1. Insufficient low current carrying capacity

[0006] The existing 0.64 terminals are mainly used for signal transmission and low-voltage control circuits, but auxiliary power supplies for new energy vehicles and small and medium power equipment require higher current carrying capacity. Traditional terminals are prone to overheating and have high resistance, which affects safety and stability.

[0007] 2. Insufficient mechanical strength, easily affected by vibration.

[0008] The automotive operating environment is subject to frequent vibrations. Traditional terminal structures are simple and may lead to poor contact after long-term use, affecting the reliability of electrical connections.

[0009] 3. High contact resistance, high risk of temperature rise.

[0010] Traditional terminals have a small contact area and high resistance when current passes through them, which can easily lead to localized overheating and affect their service life.

[0011] 4. Lack of effective locking and protection mechanisms

[0012] Existing terminals typically rely on a single locking structure, which is prone to loosening under vibration or external force, and lacks protection for the contact springs, making them susceptible to damage from external forces.

[0013] 5. Insufficient waterproof performance

[0014] Some applications (such as battery management systems) require waterproof design, but traditional terminal structures cannot simultaneously meet the requirements of high current carrying capacity and sealing. Utility Model Content

[0015] The purpose of this utility model is to overcome the defects of the prior art and provide a wire harness crimping terminal structure for mating 1.2×0.6 pins, which increases the cross-sectional area, improves the current carrying capacity, enhances contact reliability, improves shock resistance, and has strong adaptability.

[0016] The objective of this utility model can be achieved through the following technical solutions:

[0017] This utility model provides a wire harness crimping terminal structure for mating 1.2×0.6 pins, including a pin mating assembly and a wire crimping assembly;

[0018] The pin fitting assembly includes a contact spring and a housing disposed outside the contact spring;

[0019] The contact spring includes two pairs of symmetrical, inwardly curved cantilever beams, each pair comprising an upper and a lower cantilever beam, providing four-point contact for the pin. This significantly improves contact stability and reliability.

[0020] Furthermore, the contact spring is riveted to the outer shell.

[0021] Furthermore, a protective tongue is provided above the contact spring. When the pin is excessively inserted or subjected to abnormal external force, the deformation of the contact spring will be limited by the protective tongue or the outer shell, preventing the contact spring from being excessively stretched and causing permanent deformation or damage.

[0022] Furthermore, the insert is provided with a waterproof protective sleeve on the mating assembly.

[0023] Furthermore, the waterproof sheath is a sealing gasket.

[0024] Furthermore, the mating assembly's housing is provided with a mistake-proof structure, which is a vertical plate, to prevent installation errors.

[0025] Furthermore, it includes a primary locking structure, which is a resilient locking tongue provided on the connector mating assembly. During the insertion of the terminal into the waterproof sleeve, the resilient locking tongue is bent. When the terminal is pushed to the correct position, the resilient locking tongue springs back and engages in a pre-set slot inside the waterproof sleeve, thereby preventing the terminal from retracting.

[0026] Furthermore, it also includes a secondary locking structure, which is used to form a locking structure with the TPA (Terminal Secondary Locking Actuator) of the waterproof sheath. The TPA is a terminal secondary locking structure.

[0027] Furthermore, the contact spring is a copper alloy spring.

[0028] 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.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] (1) Increase the cross-sectional area and improve the current carrying capacity. The 1.2 terminal design increases the cross-sectional area, reduces the resistance, and increases the current carrying capacity to 2-3 times that of the traditional 0.64 terminal, making it suitable for applications with higher current requirements.

[0031] (2) Improve contact reliability. By optimizing the contact interface design and setting four contact points, contact resistance is reduced, the risk of temperature rise is decreased, and long-term stability is improved. A fully enclosed design is adopted to prevent external impacts, dust, or foreign objects from entering, improving the durability and safety of the terminals. A copper alloy substrate is used to improve conductivity and mechanical strength, ensuring long-term stable operation. An overvoltage protection structure is provided. When the pin is over-inserted or subjected to abnormal external force, the deformation of the contact spring is limited by the protective tongue or shell, preventing the contact spring from being over-stretched and causing permanent deformation or damage.

[0032] (3) Improved shock resistance. A double locking mechanism ensures terminal retention force and prevents loosening due to vibration. The protective tongue and contact spring adopt a stamped integral structure, which enhances mechanical strength and adapts to the vibration environment of automobiles.

[0033] (4) High adaptability. Waterproof / non-waterproof optional design, which can be adapted to waterproof connectors with single-wire sealing to meet the needs of different application scenarios. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure for crimping terminals of wire harnesses that are fitted with 1.2×0.6 pins. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the structure for crimping terminals of wire harnesses that are fitted with 1.2×0.6 pins. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of the pin mating assembly for a wire harness crimping terminal structure used to mate with 1.2×0.6 pins;

[0037] Figure 4 This is a schematic diagram of the wire harness crimp terminal structure and waterproof sheath used for mating with 1.2×0.6 pins;

[0038] Figure 5A schematic diagram of the locking structure for a wire harness crimping terminal structure that mates with 1.2×0.6 pins;

[0039] Figure 6 This is a schematic diagram of the structure of the wire harness crimp terminal used to mate with the 1.2×0.6 pins.

[0040] Reference numerals in the attached diagram: 1-Pin mating assembly; 2-Wire crimping assembly; 3-Contact spring; 4-Housing shell; 5-Pin; 6-Protective tongue; 7-Waterproof sheath; 8-Anti-misoperation structure; 9-Elastic locking tongue; 10-Secondary locking structure. Detailed Implementation

[0041] 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.

[0042] Example 1

[0043] This embodiment provides a wire harness crimping terminal structure for mating with 1.2×0.6 pins, such as... Figure 1-6 As shown, it includes a pin mating assembly 1 and a wire crimping assembly 2;

[0044] The pin fitting assembly 1 includes a contact spring 3 and a housing 4 disposed outside the contact spring 3;

[0045] The contact spring 3 includes two pairs of symmetrical, inwardly curved cantilever beams, each pair comprising an upper cantilever beam and a lower cantilever beam, providing four-point contact for the insert 5. This greatly improves contact stability and reliability.

[0046] Example 2

[0047] This embodiment provides a wire harness crimping terminal structure for mating with 1.2×0.6 pins, such as... Figure 1-6 As shown, it includes a pin mating assembly 1 and a wire crimping assembly 2;

[0048] The pin fitting assembly 1 includes a contact spring 3 and a housing 4 disposed outside the contact spring 3;

[0049] The contact spring 3 includes two pairs of symmetrical, inwardly curved cantilever beams, each pair comprising an upper cantilever beam and a lower cantilever beam, providing four-point contact for the insert 5. This greatly improves contact stability and reliability.

[0050] In a specific embodiment, the contact spring 3 is riveted to the outer shell 4.

[0051] In a specific embodiment, a protective tongue 6 is provided above the contact spring 3. When the pin 5 is excessively inserted or subjected to abnormal external force, the deformation of the contact spring 3 will be limited by the protective tongue 6 or the outer shell 4 to prevent the contact spring 3 from being excessively stretched and causing permanent deformation or damage.

[0052] In a specific embodiment, the fitting assembly 1 is provided with a waterproof protective sleeve 7.

[0053] In a specific embodiment, the waterproof sheath 7 is a sealing gasket.

[0054] In a specific embodiment, the housing 4 of the fitting assembly 1 is provided with a mistake-proof structure 8, which is a vertical plate, to prevent installation errors.

[0055] In a specific embodiment, a primary locking structure is included, which is an elastic locking tongue 9 provided on the pin mating assembly 1. During the insertion of the terminal into the waterproof sleeve 7, the elastic locking tongue 9 is bent. When the terminal is pushed to the correct position, the elastic locking tongue 9 will spring back and lock into a preset slot inside the waterproof sleeve 7, thereby preventing the terminal from retracting.

[0056] In a specific embodiment, a secondary locking structure 10 is also included, which is used to form a locking structure with the assembly TPA of the waterproof sheath 7. The TPA is a terminal secondary locking structure.

[0057] In a specific implementation, the contact spring 3 is a copper alloy spring.

[0058] 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.

[0059] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0060] 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 wire harness crimping terminal structure for mating 1.2×0.6 pins, characterized in that, It includes a pin mating assembly (1) and a wire crimping assembly (2); The pin fitting assembly (1) includes a contact spring (3) and a housing (4) disposed outside the contact spring (3); The contact spring (3) includes two pairs of symmetrical, inwardly curved cantilever beams, each pair of cantilever beams including an upper cantilever beam and a lower cantilever beam, providing four-point contact for the insert (5).

2. The wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, The contact spring (3) is riveted to the outer shell (4).

3. The wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, The contact spring (3) is provided with a protective tongue (6). When the pin (5) is over-inserted or subjected to abnormal external force, the deformation of the contact spring (3) will be limited by the protective tongue (6) or the outer shell (4) to prevent the contact spring (3) from being over-stretched and causing permanent deformation or damage.

4. The wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, The fitting assembly (1) is provided with a waterproof sleeve (7).

5. A wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 4, characterized in that, The waterproof sheath (7) is a sealing gasket.

6. The wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, The fitting assembly (1) has a fault-prevention structure (8) on its outer shell (4), and the fault-prevention structure (8) is a vertical plate.

7. A wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 6, characterized in that, It includes a primary locking structure, wherein the primary locking structure is an elastic locking tongue (9) provided on the pin mating assembly (1); during the process of inserting the terminal into the waterproof sleeve (7), the elastic locking tongue (9) will be bent; when the terminal is pushed to the correct position, the elastic locking tongue (9) will spring back and lock into the preset slot inside the waterproof sleeve (7), thereby preventing the terminal from exiting backward.

8. The wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, It also includes a secondary locking structure (10) for forming a locking structure with the assembly TPA of the waterproof sheath (7).

9. A wire harness crimping terminal structure for mating 1.2×0.6 pins according to claim 1, characterized in that, The contact spring (3) is a copper alloy spring.

10. A wire harness crimping terminal structure for mating 1.2×0.6 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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