A connector structure

Abstract

The present invention discloses a connector structure, which includes a housing, a rubber core assembly penetrating through the housing from front to back, and a pin penetrating through the rubber core assembly from front to back. The rubber core assembly includes a front rubber core and a rear rubber core that are snap-connected. A U-shaped fixing ring is clamped on the pin, and a bayonet for accommodating the U-shaped fixing ring is provided between the front rubber core and the rear rubber core. The present invention can prevent the pin from rotating relative to the housing, realizes the dual positioning functions of the pin in the circumferential and axial directions, improves the reliability and safety of the connector, and is convenient for assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to a connector structure. Background Art

[0002] Electrification increasingly affects people's lives. Due to production and living needs, electrical connectors are widely used in many fields, such as connecting two electronic devices, connecting electrical circuits, connecting circuit boards and wire harnesses, etc.

[0003] With the rapid development of the fuel, hybrid, and pure electric vehicle manufacturing industries, the requirements for electrical connector interfaces are getting higher and higher. In the existing connector structures, the fixing of the pin and the housing is usually carried out by clamping with a claw. The pin fixed by the claw can prevent the pin from moving axially, achieving the function of axial positioning. However, when the circumferential force applied to the pin is greater than the force applied by the claw, the claw cannot play a role in circumferential positioning, and there is a certain risk of the pin falling off after being fixed by the claw. There are two shallow positioning grooves on both sides of the pin (because the deep positioning groove claw cannot be installed), and there are two protruding positioning ribs on the housing. When connecting the pin to the copper bar, it is necessary to fix the screw according to the standard torque with an electric screwdriver. Because the pin is subjected to the screw torque, the pin is likely to damage the housing positioning rib between the pin and the housing, resulting in potential installation failure of the connector socket, unable to meet the performance requirements of electrical connection, poor reliability, and potential safety hazards. Its claw is generally installed inside the housing, and the installation is inconvenient. Summary of the Invention

[0004] In view of the above-mentioned existing technical defects, the present invention provides a connector structure, which can prevent the pin from rotating relative to the housing, achieving the dual positioning functions of the pin in the circumferential and axial directions, improving the reliability and safety of the connector, and being convenient for assembly.

[0005] To solve the above technical problems, the present invention provides a connector structure, including a housing, a rubber core assembly penetrating through the housing from front to back, and a pin penetrating through the rubber core assembly from front to back. The rubber core assembly includes a front rubber core and a rear rubber core that are snap-connected. A U-shaped fixing ring is clamped on the pin, and a bayonet for accommodating the U-shaped fixing ring is provided between the front rubber core and the rear rubber core.

[0006] Further, both side surfaces of the U-shaped fixing ring are flat surfaces, and the inner wall surface of the bayonet is a vertical plane that abuts and cooperates with the side surface of the U-shaped fixing ring.

[0007] Further, the pin includes a front insertion portion, a middle columnar portion, and a rear flat portion. Symmetrical notches are provided on both sides of the front end of the columnar portion, and the U-shaped fixing ring is clamped at the notches.

[0008] Further, the front rubber core is provided with a through hole, and the front end of the rear rubber core is provided with an elastic hook that passes through the through hole and latches with the front rubber core.

[0009] Further, a stop step for accommodating the U-shaped fixing ring is provided inside the front rubber core, a pressing ring inserted into the front rubber core is provided at the front end of the rear rubber core, a bayonet is formed between the pressing ring and the stop step, and the front end face of the pressing ring abuts against the end face of the U-shaped fixing ring.

[0010] Further, a convex edge is provided at the rear end of the front rubber core, and a slot inserted with the convex edge is provided at the front end of the rear rubber core, and the slot is disposed around the inner side end of the pressing ring.

[0011] Further, a raised retaining buckle is provided in the middle of the inner wall surface of the housing, and a raised stop portion is provided at the rear end of the inner wall surface of the housing; an elastic buckle that bends outward and cooperates with the retaining buckle is provided on the outer periphery of the front rubber core, a limiting portion that cooperates with the stop portion is provided on the outer periphery of the rear rubber core, and the outer end face of the limiting portion abuts against the inner end face of the stop portion, and the front end face of the elastic buckle abuts against the rear end face of the retaining buckle.

[0012] Further, raised limiting strips that extend backward are provided on both sides of the retaining buckle, and the rear ends of the limiting strips are connected to the stop portion; sliding grooves for accommodating the limiting strips are provided on both the upper and lower surfaces of the rubber core assembly, the elastic buckle is disposed in the middle of the front end of the sliding groove, and the limiting portion is disposed on both sides of the rear end of the sliding groove.

[0013] Further, two corresponding retaining buckles are provided at intervals in the middle of the upper and lower inner wall surfaces of the housing, and the height of the retaining buckle is lower than the height of the limiting strip.

[0014] Further, a baffle for spacing apart the insertion pins extends outward at the rear end of the rear rubber core.

[0015] The present invention has the following beneficial effects:

[0016] In the present invention, a U-shaped fixing ring is arranged on the pin to fix it inside the rubber core assembly. By utilizing the structural characteristics of the U-shaped fixing ring, the positioning force between the rubber core and the pin is effectively increased, so that the pin cannot rotate or move forward and backward relative to the rubber core, realizing the dual positioning function of the pin in the circumferential and axial directions, preventing the rubber core from being damaged due to the rotation of the pin caused by the torque applied by the electric screwdriver, improving the reliability and safety of the connector. Moreover, the rubber core assembly is divided into a front rubber core and a rear rubber core that are snap-connected together, and a bayonet for accommodating the U-shaped fixing ring is arranged between the front rubber core and the rear rubber core. In this way, after the pin and the U-shaped fixing ring are placed in the front rubber core first, the rear rubber core can be snap-connected to the front rubber core, thereby fixing the U-shaped fixing ring, which is convenient for assembly, can effectively improve the production efficiency of the product, and reduce the production cost. Additionally, structures that cooperate with each other to clamp and fix the rubber core assembly are respectively arranged on the front rubber core, the rear rubber core, and the inner part of the housing, forming a front and rear stop and snap structure. By using the structural characteristics of each component itself for assembly and fixation, the holding force and reliability between components can be effectively enhanced, and the assembly is convenient. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is an exploded schematic view of the connector structure in the embodiment;

[0019] Figure 2 is a cross-sectional schematic view of the connector structure in the embodiment;

[0020] Figure 3 is a longitudinal-sectional schematic view of the connector structure at the elastic hook in the embodiment;

[0021] Figure 4 is a longitudinal-sectional schematic view of the connector structure at the stop portion in the embodiment;

[0022] Figure 5 is a schematic view of the housing in the embodiment;

[0023] Figure 6 is a schematic view of the rear rubber core in the embodiment;

[0024] Figure 7 is a schematic view of the assembled rubber core assembly and the pin in the embodiment;

[0025] Figure 8 For Figure 7 the top view of the components in. Detailed Embodiments

[0026] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and described below in conjunction with the drawings and specific embodiments.

[0027] Embodiment 1

[0028] As Figures 1 to 8 shown, a connector structure shown in this embodiment includes a housing 1, a rubber core assembly 2 penetrating through the housing 1 from front to back, and three pins 3 penetrating through the rubber core assembly from front to back. The rubber core assembly includes a front rubber core 21 and a rear rubber core 22 which are snap-connected. A U-shaped fixing ring 4 is clamped on the pin 3, and a bayonet 23 for accommodating the U-shaped fixing ring 4 is provided between the front rubber core 21 and the rear rubber core 22. Specifically, three through holes 24 penetrating through the front rubber core and the rear rubber core are arranged in the rubber core assembly in a row, and a bayonet 23 is formed in each through hole 24. The three pins 3 respectively penetrate through the three through holes in one-to-one correspondence through the U-shaped fixing ring 4. In the above structure, by using the structural characteristics of the U-shaped fixing ring, the positioning force between the rubber core and the pin is effectively increased, so that the pin cannot rotate or move back and forth relative to the rubber core, realizing the dual positioning function of the pin in the circumferential and axial directions, preventing the rubber core from being damaged due to the torque applied by the electric screwdriver causing the pin to rotate, improving the reliability and safety of the connector, and dividing the rubber core assembly into a front rubber core and a rear rubber core which are snap-connected together, and arranging a bayonet for accommodating the U-shaped fixing ring between the front rubber core and the rear rubber core. In this way, the pin and the U-shaped fixing ring can be placed in the front rubber core first, and then the rear rubber core can be snapped onto the front rubber core, thereby fixing the U-shaped fixing ring, which is convenient for assembly, can effectively improve the production efficiency of the product, and reduce the production cost.

[0029] In the actual application process, in order to further increase the bonding force and the holding force, both side surfaces of the U-shaped fixing ring 4 are designed as flat surfaces, and the inner wall surface of the bayonet 23 that abuts against the side surface of the U-shaped fixing ring 4 is also designed as a vertical flat surface. By using the abutting flat surfaces, the rotation gap between the pin and the rubber core assembly is avoided, effectively improving the reliability between the structures.

[0030] Specifically, the pin 3 includes a mating portion 31 at the front end, a cylindrical portion 32 in the middle, and a flat portion 33 at the rear end. Symmetrical notches 321 are provided on both sides of the front end of the cylindrical portion 32, and the U-shaped fixing ring 4 is clamped at the notches 321. The mating portion 31 is placed inside the front end of the front rubber core to form a mating interface, and the flat portion 33 extends out of the rear rubber core for connecting with a wire harness.

[0031] Specifically, a through hole 211 is provided on the front rubber core 21. At the position corresponding to the through hole 211 at the front end of the rear rubber core 22, two elastically hooked members 221 with reverse designs extend forward symmetrically. The elastically hooked member 221 includes a hooked portion 222 at the front end and a rod portion 223 at the rear end. The distance between the outermost sides of the two hooked portions 222 on the two elastically hooked members 221 is greater than the length of the through hole 211, and the length of the rod portion 223 is the same as the axial depth of the through hole 211. While ensuring the reliability of the fastening between the front rubber core and the rear rubber core, the fastening between the two is tight without gaps, preventing the insertion pin from loosening due to the existence of gaps between the two. During the process of fastening the front rubber core and the rear rubber core, by utilizing the characteristic of elastic deformation of the elastically hooked member 221, when passing through the through hole 211, under the action of the extrusion force of the through hole 211, the two elastically hooked members 221 are deformed and approach each other. After the hooked portion 223 passes through the through hole, the elastically hooked member 221 returns to its original state and the hooked portion 223 is fastened on the front rubber core 21.

[0032] Specifically, a stop step 212 for accommodating and defining the U-shaped fixing ring 4 is provided in the through hole in the front rubber core 21. A tightening ring 224 inserted into the through hole of the front rubber core is provided at the front end of the rear rubber core 22. A bayonet 23 is formed between the tightening ring 224 and the stop step 212, and the front end face of the tightening ring 224 abuts against the end face of the U-shaped fixing ring 4.

[0033] A raised flange 213 is provided around the edge of the through hole at the rear end of the front rubber core 21. A slot 225 inserted into the flange 213 is provided at the front end of the rear rubber core 22, and the slot 225 is disposed around the inner side end of the tightening ring 224, improving the connection tightness after the front rubber core and the rear rubber core are fastened.

[0034] The upper and lower inner wall surfaces of the housing 1 are both flat surfaces, and the upper and lower surfaces of the rubber core assembly 2 are also flat surfaces. The rubber core assembly 2 and the housing 1 are in abutting fit through the flat surfaces on both of them. Specifically, a raised stop portion 11 is provided at the rear end of the flat surface inside the housing 1 for cooperating with the rear end face of the rubber core assembly to achieve the purpose of stopping the rubber core assembly from sliding backward continuously. Two front and rear open sliding grooves 25 are arranged in parallel at the upper and lower flat surfaces of the rubber core assembly. An elastically buckled member 26 that is bent outward in the reverse direction is provided in the middle of each sliding groove 25. A retaining buckle 12 that cooperates with the elastically buckled member 26 is provided at the position corresponding to the elastically buckled member 26 on the upper and lower flat surfaces inside the housing 1. Raised portions are provided on both sides of the retaining buckle 12 and limiting strips 13 that extend backward to the rear end of the flat surface are provided. The height of the limiting strip 13 is the same as the depth of the sliding groove 25, and the rear end of the limiting strip 13 is connected to the stop portion 11. During assembly, the limiting strips 13 on both sides of the same retaining buckle 12 slide in the sliding groove 25, playing a role of positioning and guiding during assembly.

[0035] Specifically, the sliding grooves 25 are respectively arranged at the front and rear of the front rubber core 21 and the rear rubber core 22. The elastic buckle 26 is arranged on the sliding groove of the front rubber core. Both sides of the sliding groove on the rear rubber core form a limiting part 226 that cooperates with the stop part 11. After assembly, the outer end face of the limiting part 226 abuts against the inner end face of the stop part 11, and the front end face of the elastic buckle 26 abuts against the rear end face of the retaining buckle 12, forming a tightly combined structure that stops the front end and clamps and limits the rear end, effectively fixing the rubber core assembly and avoiding an axial gap between the rubber core assembly 2 and the housing 1.

[0036] Specifically, the height of the retaining buckle 12 is lower than the height of the limiting strip 13, which is convenient for the elastic buckle 26 to slide on it, reduces the deformation amount of the elastic buckle 26, avoids damaging the elastic buckle 26, and is convenient for assembly.

[0037] Two baffles 27 for spacing apart three pins 3 are also extended outward at the rear end of the rear rubber core 22. The vertical cross-section of the baffle 27 is S-shaped, improving the overall aesthetic appearance of the connector.

[0038] Specifically, a waterproof ring 5 is also arranged on the outer periphery of the front end of the housing 1.

[0039] The specific assembly process of the connector in the above embodiment is as follows: First, assemble the U-shaped fixing ring on the pin, then insert the pin into the front rubber core, then buckle the rear rubber core onto the front rubber core, then install the waterproof ring at the corresponding position of the housing, and finally install the assembled rubber core assembly into the housing to complete the assembly.

[0040] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A connector structure, characterized in that, it includes a housing, a rubber core assembly penetrating through the housing from front to back, and a pin penetrating through the rubber core assembly from front to back. The rubber core assembly includes a front rubber core and a rear rubber core that are snap-connected. A U-shaped fixing ring is clamped on the pin, and a bayonet for accommodating the U-shaped fixing ring is provided between the front rubber core and the rear rubber core; both side surfaces of the U-shaped fixing ring are flat surfaces, and the inner wall surface of the bayonet is a vertical plane that abuts and cooperates with the side surface of the U-shaped fixing ring; a stop step for accommodating the U-shaped fixing ring is provided in the front rubber core, a tightening ring inserted into the front rubber core is provided at the front end of the rear rubber core, the bayonet is formed between the tightening ring and the stop step, and the front end surface of the tightening ring abuts against the end surface of the U-shaped fixing ring; a convex edge is provided at the rear end of the front rubber core, and a slot inserted with the convex edge is provided at the front end of the rear rubber core, and the slot is disposed around the inner end of the tightening ring; a through hole is provided on the front rubber core, and two elastic hooks symmetrically provided at the front end of the rear rubber core pass through the through hole and are snap-connected to the front rubber core. The elastic hook includes a hook portion at the front end and a rod portion at the rear end, and the distance between the outermost sides of the two hook portions on the two elastic hooks is greater than the length of the through hole, and the length of the rod portion is the same as the axial depth of the through hole; a baffle for spacing apart the pins is further extended outward at the rear end of the rear rubber core, and the vertical cross section of the baffle is S-shaped.

2. The connector structure according to claim 1, characterized in that, the pin includes a mating portion at the front end, a cylindrical portion in the middle, and a flat portion at the rear end. Symmetrical notches are provided on both sides of the front end of the cylindrical portion, and the U-shaped fixing ring is clamped at the notches.

3. The connector structure according to claim 1 or 2, characterized in that, a protruding retaining buckle is provided in the middle of the inner wall surface of the housing, and a protruding stop portion is provided at the rear end of the inner wall surface of the housing; an elastic buckle that bends outward and cooperates with the retaining buckle is provided on the outer periphery of the front rubber core, and a limiting portion that cooperates with the stop portion is provided on the outer periphery of the rear rubber core, and the outer end surface of the limiting portion abuts against the inner end surface of the stop portion, and the front end surface of the elastic buckle abuts against the rear end surface of the retaining buckle.

4. The connector structure according to claim 3, characterized in that, limiting strips that protrude and extend backward are provided on both sides of the retaining buckle, and the rear ends of the limiting strips are connected to the stop portion; sliding grooves for accommodating the limiting strips are provided on both the upper and lower surfaces of the rubber core assembly, the elastic buckle is disposed in the middle of the front end of the sliding groove, and the limiting portion is disposed on both sides of the rear end of the sliding groove.

5. The connector structure according to claim 4, characterized in that, two corresponding retaining buckles are spaced apart in the middle of the upper and lower inner wall surfaces of the housing, and the height of the retaining buckle is lower than the height of the limiting strip.

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