Waterproof pin terminal

Abstract

The utility model provides a waterproof pin terminal, which comprises a base, a plurality of pins are embedded in the base, a protective cover is fixedly mounted on the pins, and an insulating sleeve is nested on the outer surface of each pin. According to the waterproof contact pin terminal, the protection cover, the insulation sleeve, the protrusion, the sealing ring and other structures are arranged, the protection cover provides physical protection for the contact pin, the protection cover and the base are connected in a fastened mode to form a closed space, the spring at the upper end and the connecting block are combined to endow the terminal with the elastic buffering capacity, and the protrusion in the insulation sleeve greatly enhances the friction force between the insulation sleeve and the contact pin; meanwhile, small gaps are filled to assist in water prevention and dust prevention, the sealing ring deforms in the radial direction and is tightly attached to the inner wall of the inserting groove due to good elasticity when the protective cover and the base are fastened, the waterproof grade is improved, and the functions of buffering, damping and tight fit of maintaining components are achieved; therefore, stable operation and durability of the pin terminal in a complex environment and high efficiency and safety of electrical connection are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical connection parts more particularly, relate to a waterproof pin terminal. BACKGROUND

[0002] In today's numerous and complex electrical equipment connection application scene, pin terminal undoubtedly bears the indispensable key connection bridge function. It is as an important medium of electrical signal and power transmission, widely distributed in the internal line connection system of various devices, and its performance and stability are directly related to the operation efficiency and reliability of the whole electrical equipment.

[0003] But the existing pin terminal has the following problems when using:

[0004] When the traditional pin terminal faces the humid or water environment, due to the lack of effective waterproof mechanism and structural optimization, water can easily penetrate into the connection gap between the pin and the socket and the internal component space of the terminal. Once the water enters, it will cause the insulation performance between the pin and the socket to drop sharply, and then cause short circuit fault. This short circuit phenomenon not only causes the instantaneous failure of the local electrical circuit, so that the related function modules of the equipment cannot work normally, but also may damage other associated electronic components due to abnormal current increase, and the frequent water entry short circuit problem will continuously negatively affect the overall stability of the equipment, greatly shorten the expected service life of the equipment, increase the maintenance cost and repair frequency of the equipment, and bring many inconveniences and economic losses to the user.

[0005] The utility model can play the role of preventing water from entering the connection part through the cooperation of the sealing ring and the insulating sleeve protrusion, ensuring the stability and reliability of electrical connection. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the technical problems in the above background art, and provides a waterproof pin terminal.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a waterproof pin terminal, comprising: a base, a plurality of pins are embedded and installed on the base, a protective cover is fixedly installed on the pin, an insulating sleeve is nested on the outer surface of the pin, a spring is fixedly installed on the upper end of the protective cover, a connecting block is fixedly installed on the upper end of the spring, protrusions are equidistantly arranged in the insulating sleeve, and the protrusions are movably connected with the surface of the pin.

[0008] Further preferred scheme: a plurality of insertion grooves are formed in the upper end of the base, a terminal groove is formed in the bottom of the insertion groove, screw holes one are formed on the left and right sides of the insertion groove, the pin is embedded in the terminal groove, and the terminal groove is matched with the insulating sleeve.

[0009] Further preferred: the protective cover is fixedly installed with fixed ends at both ends, screw holes two are formed in the upper ends of the fixed ends, and the screw holes two are consistent with the screw hole one at the upper end of the base.

[0010] Further preferred: the protective cover is fixedly installed with fixed ends at both ends, screw holes two are formed in the upper ends of the fixed ends, and the screw holes two are consistent with the screw hole one at the upper end of the base.

[0011] Further preferred: the protective cover is fixedly installed with fixed ends at both ends, screw holes two are formed in the upper ends of the fixed ends, and the screw holes two are consistent with the screw hole one at the upper end of the base.

[0012] Further preferred: the protective cover is fixedly installed with fixed ends at both ends, screw holes two are formed in the upper ends of the fixed ends, and the screw holes two are consistent with the screw hole one at the upper end of the base.

[0013] Beneficial effects:

[0014] 1. By setting the insulating sleeve and the protrusions, when the pin is sleeved into the insulating sleeve, due to the existence of the protrusions, a proper force needs to be applied along the axial direction of the pin during sleeving, so that the protrusions can smoothly slide through the surface of the pin one by one. The protrusions increase the friction between the insulating sleeve and the pin. In daily use, whether it is slight vibration of the equipment, bumps during transportation, or frequent plugging and unplugging operations, this friction can make the insulating sleeve more stably nested on the outer surface of the pin, preventing it from loosening or shifting, providing reliable insulation protection for the pin, effectively isolating the pin from the external environment and other metal components, greatly reducing the risk of short circuit and electric leakage, and effectively ensuring the safety and stability of electrical connection. At the same time, the protrusions can fill the small gaps that may exist between the insulating sleeve and the pin to some extent. These gaps may become channels for impurities such as water and dust to enter, and the existence of the protrusions forms a barrier, further improving the waterproof and dustproof performance.

[0015] 2. By setting the sealing ring, when the protective cover is fastened with the base by bolts, the protective cover extrudes the sealing ring downward. Due to the good elasticity of the sealing ring, it will be elastically deformed along the radial direction, filling the small gaps between the pin and the inner wall of the insertion slot. The sealing pressure generated by this deformation can form a tight waterproof barrier, effectively preventing water from entering the connection part inside the pin terminal from the outside. During the process of being extruded and deformed, the sealing ring not only plays a sealing role, but also provides a certain degree of buffering and shock absorption effect for the pin terminal. When the pin terminal is subjected to slight vibration or impact force from the outside, the sealing ring can absorb part of the energy, reducing the influence of vibration on the pin and the internal connection structure.

[0016] 3. In summary, the waterproof pin terminal, by setting up protective cover, insulating sleeve, convex and sealing ring structure, protective cover provides physical protection for the pin, and the fastening connection with the base forms a closed space, and the spring at the upper end and the connecting block combination endows the terminal with elastic buffer capacity, the convex inside the insulating sleeve greatly enhances the friction between the insulating sleeve and the pin, so that it is firmly connected, and resists external force interference, at the same time, it fills in the small gap to assist waterproof and dustproof, the sealing ring deforms radially with good elasticity when the protective cover is fastened with the base, and is tightly attached to the inner wall of the insertion slot, improving the waterproof level, also having the functions of buffering and shock absorption and maintaining the close cooperation of components, together ensuring the stable operation, long service life of the pin terminal in complex environment and the efficiency and safety of electrical connection. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic diagram of the utility model.

[0018] Figure 2 It is a pin structure schematic diagram of the utility model.

[0019] Figure 3 It is a pin plane structure schematic diagram of the utility model.

[0020] Figure 4 It is a protective cover structure schematic diagram of the utility model.

[0021] Figures 1-4 Middle: 1, base; 101, insertion slot; 102, terminal slot; 103, screw hole one; 2, pin; 3, protective cover; 301, fixed end; 302, screw hole two; 303, spring; 304, connecting block; 305, fixed groove; 4, insulating sleeve; 401, sealing ring; 402, convex. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings of the embodiments of the utility model. Figures 1-4 The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings of the embodiments of the utility model.

[0023] Please refer to Figures 1-4The utility model discloses an embodiment of a waterproof pin terminal, including: base 1, the embedding installation of several pin 2 is established on base 1, the fixed installation of protective cover 3 is established on pin 2, the nesting of insulating sleeve 4 is established on pin 2 outer surface, the fixed installation of spring 303 is established on protective cover 3 upper end, the fixed installation of connecting block 304 is established on spring 303 upper end, the inside equal distance of insulating sleeve 4 is provided with protruding 402, protruding 402 with pin 2 surface swing joint, the upper end of base 1 is provided with several insertion slot 101, the inside bottom of insertion slot 101 is provided with terminal slot 102, pin 2 embedding terminal slot 102 inside setting, terminal slot 102 and insulating sleeve 4 are set up in pairs, the bottom of protective cover 3 is provided with fixed slot 305, and pin 2 upper end is embedded in fixed slot 305 inside and is fixedly connected with it, and the both sides of insertion slot 101 are provided with screw hole one 103, and the both ends of protective cover 3 are fixedly installed with fixed end 301, and the both ends of fixed end 301 are provided with screw hole two 302, and screw hole two 302 and the screw hole one 103 structure of base 1 upper end are identical, and base 1 is as the basic support structure of entire waterproof pin terminal, and the insertion slot 101 of its upper end provides the positioning space for the installation of protective cover 3, so that protective cover 3 can accurately cover on pin 2 area top. The terminal slot 102 of insertion slot 101 inside bottom is used to accommodate the bottom part of pin 2, ensures the firm installation of pin 2 on base 1, and provides certain axial positioning for pin 2, prevents excessive displacement of it in the use process. Pin 2 is the key component for realizing electrical connection, which is made of metal material with good conductivity, such as copper or copper alloy. One end of pin 2 is embedded in fixed slot 305 at the bottom of protective cover 3, and is fixedly connected with it, which makes protective cover 3 can protect pin 2, prevent pin 2 from bending or breaking when subjected to external force. The insulating sleeve 4 nested on the outer surface of pin 2 plays an insulating isolation role, prevents pin 2 from short circuit or electric leakage phenomenon with other metal components or external environment, and guarantees the safety and stability of electrical connection. The fixed end 301 at the both ends of protective cover 3 and the screw hole two 302 are matched with the insertion slot 101 and the screw hole one 103 on the base, and the protective cover 3 can be firmly fixed on the base by using bolts and other connecting parts, forming a closed protective space. The spring 303 and the connecting block 304 combination of the fixed installation on the upper end of protective cover 3 provides elastic buffer function for the connection of pin 2 terminal and external equipment. When the external connecting component contacts with connecting block 304 and exerts pressure, spring 303 can absorb part of impact force, avoid pin from being damaged by excessive external force, and also can compensate the connection not tight problem caused by manufacturing tolerance or installation error to some extent, ensure the reliability of electrical connection. Insulating sleeve 4 is made of material with excellent insulation performance, such as rubber or plastic.The protrusions 402 inside the insulation sleeve 4 are movably connected to the surface of the pin 2. On one hand, the protrusions 402 increase the friction between the insulation sleeve 4 and the pin 2, so that the insulation sleeve 4 can be more stably nested on the outer surface of the pin 2, preventing it from loosening or moving during use. On the other hand, the protrusions 402 can fill the small gap between the insulation sleeve and the pin to some extent. First, the insulation sleeve 4 is sleeved from one end of the pin 2. During the sleeving process, due to the presence of the protrusions 402 inside the insulation sleeve 4, a certain axial force needs to be appropriately applied so that the protrusions 402 can smoothly slide over the surface of the pin 2 until the insulation sleeve 4 is completely nested in the appropriate position of the pin 2. At this time, the protrusions 402 are in close contact with the surface of the pin 2, providing friction and sealing assistance. Then, the pin 2 with the insulation sleeve 4 is inserted into the terminal slot 102 of the base 1 with the bottom of the pin 2 aligned with the terminal slot 102. Then, the pin 2 is slowly inserted into the terminal slot 102 to ensure that the pin 2 is completely embedded in the bottom of the terminal slot 102. After the pin 2 is installed on the base 1, the fixing slot 305 at the bottom of the protective cover 3 is aligned with the upper end of the pin 2. Then, the protective cover 3 is moved downward so that the upper end of the pin 2 is embedded in the fixing slot 305. The pin 2 and the fixing slot 305 are fixedly connected by welding, bonding or other appropriate fixing methods. The bolt is passed through the second screw hole 302 of the protective cover and the first screw hole 103 of the base, and the bolt is tightened according to the specified torque to firmly fix the protective cover 3 on the base 4. After the protective cover 3 is installed on the base 1 and fastened, one end of the spring 303 is fixed on the upper end of the protective cover 3, and then the connecting block 304 is installed on the other end of the spring 303.

[0024] In the embodiments of the utility model, the upper part of the insulation sleeve 4 is provided with a sealing ring 401, the sealing ring 401 is nested on the outer surface of the pin 2 and is located below the protective cover 3, and the sealing ring 401 is in close contact with the inner wall of the insertion slot 101. The sealing ring 401 is usually made of rubber material with good elasticity, aging resistance and water resistance, such as silicone rubber or fluororubber. Silicone rubber has excellent high and low temperature resistance and can maintain elasticity and sealing performance in the temperature range of-50 DEG C to 200 DEG C. Fluororubber has excellent oil resistance, corrosion resistance and high temperature resistance and performs outstandingly in some application scenarios that may contact oil stains or chemicals, effectively preventing the sealing ring from failing due to chemical corrosion and ensuring long-term stable waterproof sealing effect. Before the pin 2 is inserted into the terminal slot 102 and the insulation sleeve 4 is nested on the surface of the pin 2, the sealing ring 401 is nested on the surface of the pin 2 and is located above the insulation sleeve 4 and below the protective cover 3. Then, the pin 2 is inserted into the terminal slot 102. After the protective cover 3 and the base 1 are fastened, the sealing ring 401 above the insulation sleeve 4 is extruded and deformed, and the sealing ring 401 is elastically deformed in the radial direction to fill the small gap between the pin 2 and the inner wall of the insertion slot 101. The sealing pressure generated by the deformation can prevent water, dust and other impurities from entering the connection part inside the terminal of the pin 2 from the outside.

[0025] Working principle: First, the insulating sleeve 4 is sleeved from one end of the pin 2. Due to the presence of the protrusion 402, appropriate force needs to be applied axially along the pin 2 during sleeving, so that the protrusion 402 can smoothly slide through the pin surface one by one. After the insulating sleeve 4 is completely sleeved into the pin 2, select the appropriate size of the sealing ring 401 according to the outer diameter of the pin 2, and sleeve the sealing ring 401 from one end of the pin so that it is located above the insulating sleeve 4. The pin 2 with the insulating sleeve 4 and the sealing ring 401 is inserted into the terminal groove 102 on the base 1 with the bottom aligned. Ensure that the pin 2 is consistent with the axis of the terminal groove 102 to avoid scratching the inner wall of the terminal groove 102 or damaging the sealing ring 401 during insertion. Insert the pin 2 into the terminal groove 102 until the pin 2 is completely embedded at the bottom of the terminal groove. After the pin 2 is installed on the base 1, the fixing groove 305 at the bottom of the protective cover 3 is aligned with the upper end of the pin 2. Then move the protective cover 3 downward so that the upper end of the pin 2 is embedded in the fixing groove 305. Use the bolt to pass through the screw hole two 302 of the protective cover 3 and the screw hole one 103 of the base to firmly fix the protective cover 3 on the base 1. At this time, the sealing ring 401 located above the insulating sleeve 4 will be deformed by the extrusion between the protective cover 3 and the base 1, forming an effective waterproof seal. After the protective cover 3 is installed on the base 1 and fastened, one end of the spring 303 is fixed on the upper end of the protective cover 3, and the connecting block 304 is installed on the other end of the spring 303, so that it can normally play the role of elastic buffer when connected with external equipment later.

Claims

1. A waterproof pin terminal, comprising: A base (1) is provided, on which a plurality of pins (2) are embedded and installed. A protective cover (3) is fixedly installed on the pins (2). An insulating sleeve (4) is nested on the outer surface of the pins (2). The protective cover (3) is fixedly installed with a spring (303) at the upper end. A connecting block (304) is fixedly installed on the upper end of the spring (303). The insulating sleeve (4) is provided with protrusions (402) at equal intervals inside. The protrusions (402) are movably connected to the surface of the pins (2).

2. The waterproof pin terminal according to claim 1, characterized in that: The base (1) has several slots (101) on its upper end. The bottom of the slot (101) has a terminal slot (102). The left and right sides of the slot (101) have screw holes (103). The pin (2) is embedded in the terminal slot (102). The terminal slot (102) is matched with the insulating sleeve (4).

3. A waterproof pin terminal according to claim 1, characterized in that: The protective cover (3) is fixedly installed with a fixed end (301) at both the left and right ends. The upper end of the fixed end (301) is provided with a screw hole two (302). The screw hole two (302) has the same structure as the screw hole one (103) at the upper end of the base (1).

4. A waterproof pin terminal according to claim 3, characterized in that: The protective cover (3) has a fixing groove (305) at the bottom, and the upper end of the pin (2) is embedded in the fixing groove (305) and fixedly connected thereto.

5. A waterproof pin terminal according to claim 2, characterized in that: A sealing ring (401) is provided above the insulating sleeve (4), and the sealing ring (401) is nested on the outer surface of the pin (2) and located below the protective cover (3).

6. A waterproof pin terminal according to claim 5, characterized in that: The sealing ring (401) fits against the inner wall of the slot (101).

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