Charging pile cable waterproof locking structure

Abstract

The utility model discloses a waterproof locking structure for a cable of a charging pile, and the structure comprises a housing which is hollow; the symmetrical mounting frame bodies are respectively and fixedly connected with the shell, and the symmetrical mounting frame bodies are respectively provided with symmetrical through holes and symmetrical mounting ring grooves; a mounting ring groove is additionally arranged to prevent the plane sealing ring from leaking out, waterproof failure is avoided, and the protection performance is guaranteed; the joint body comprises a hollow part, an external thread part, a cylindrical part and an internal thread part, and the hollow part, the external thread part, the cylindrical part and the internal thread part are fixedly connected in sequence. The utility model relates to the technical field of charging pile cables, in particular to a waterproof locking structure for a charging pile cable. The technical problem to be solved by the utility model is to provide the waterproof locking structure for the cable of the charging pile, which solves the problems that the product protection grade is low, the cable is easy to damage by a cable pressing buckle, the installation is difficult and the like, and improves the installation efficiency, the product protection grade and the safety performance.

Description

Technical Field

[0001] The utility model relates to the technical field of charging pile cables, in particular to a waterproof locking structure for charging pile cables. Background Art

[0002] The connection between the traditional charging pile wire cable and the housing only relies on the crimping buckle and the screws of the housing to lock and press the cable to fix the cable and prevent it from falling off. However, the locking force of this structure is insufficient and cannot meet the requirement of the industry standard that the pulling force should be greater than 200N. Pressing the wire cable with the crimping buckle will easily damage the outer sheath of the wire cable, affecting the electrical performance and increasing the risk of electric leakage. This structure cannot adapt to wire cables with different diameters. When in use, it is restricted by the wire cable, and a crimping buckle of one specification cannot be applied to products with different wire diameters. Different specifications of products need to be equipped with various specifications of crimping buckles.

[0003] The waterproof function is ensured by adding a sealing washer between the wire cable and the housing. This structure cannot adapt to wire cables with different diameters and is restricted by the wire cable when in use and cannot be applied to different specification products. Different specifications of products need to be equipped with various specifications of sealing washers. There is a risk of water leakage after the sealing washer wears during use, which will cause water immersion, damage the electrical function, and cause serious damage.

[0004] The above locking and waterproof structures have great potential safety hazards. In terms of waterproofing, it can only be sprayed with water in all directions on the outer shell without harmful effects, and the protection level is IP65. It cannot work normally when completely immersed in water and cannot meet the safe use in extreme outdoor weather. In terms of assembly, the waterproof and locking functions are carried out in two processes, which increases the material cost and labor cost, is not conducive to large-scale production and promotion, and there is no quality and price advantage in the competition of the same type of products under the condition of increasing costs. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a waterproof locking structure for charging pile cables, which solves the problems such as low protection level of the product, easy damage of the cable by the crimping buckle, and difficult installation, and improves the installation efficiency, product protection level and safety performance.

[0006] The utility model adopts the following technical scheme to achieve the utility model purpose:

[0007] A waterproof locking structure for a charging pile cable, characterized in that it includes: a housing, which is hollow inside; symmetrical mounting frames, which are respectively fixedly connected to the housing, and the symmetrical mounting frames are respectively provided with symmetrical through holes and symmetrical mounting ring grooves; adding mounting ring grooves to prevent the flat sealing ring from leaking out and avoid waterproof failure, ensuring the protection performance; a joint body, including a hollow part, an external thread part, a cylindrical part and an internal thread part, the hollow part, the external thread part, the cylindrical part and the internal thread part are fixedly connected in sequence, a group of uniformly distributed notches are arranged in the upper middle part of the hollow part, a sealing sheath is sleeved inside the hollow part, and the internal thread part passes through the through hole; a round nut, which is threadedly connected to the external thread part; a flat sealing ring, which matches the cylindrical part, and the flat sealing ring matches the mounting ring groove; a nylon flat nut, which is threadedly connected to the internal thread part, and the nylon flat nut contacts the housing. The joint body, the sealing sheath, the round nut, the flat sealing ring and the nylon flat nut form a PG waterproof joint assembly. The sealing sheath and the flat sealing ring are made of silicone rubber material, which has excellent high and low temperature resistance, ozone resistance and weather aging resistance, and can maintain its unique use elasticity, ozone resistance and weather resistance in the working temperature range of -~℃. Furthermore, it improves the service life of the charging pile; due to the good stretching performance of the silicone rubber material, this structure can accommodate different wire diameters of wire cables and meet the waterproof requirements. The PG joint assembly adapts to different wire cable specifications, greatly saving the middle of materials, saving materials and production costs; the PG joint is a component, and only one installation process is required, which can be manual or automated, greatly improving the assembly efficiency.

[0008] As a further limitation of this technical solution, the joint body is fixedly connected to a contact plate, the round nut is closely attached to the contact plate, and the contact plate is closely attached to the mounting frame.

[0009] As a further limitation of this technical solution, the contact plate is selected as M32×1.5.

[0010] As a further limitation of this technical solution, the housing is fixedly connected to symmetrical nut limit blocks corresponding to the symmetrical through holes respectively, and the nylon flat nut matches the area formed by the symmetrical nut limit blocks. Adding four nut limit blocks makes the assembly of the nylon flat nut and the housing more positioned, preventing the nylon flat nut from falling off and avoiding loosening of the nylon flat nut.

[0011] As a further limitation of this technical solution, the distance between the symmetrical nut limit blocks is slightly larger than the distance between the two parallel planes of the nylon flat nut.

[0012] As a further limitation of this technical solution, the housing is fixedly connected to a group of uniformly distributed mounting threaded posts.

[0013] As a further limitation of the present technical solution, the housing is fixedly connected to an isolation arc plate corresponding to each of the mounting threaded posts.

[0014] Compared with the related art, a waterproof locking structure for a charging pile cable provided by the present utility model has the following beneficial effects:

[0015] (1) The present utility model cancels the feature of the pressure buckle. After the charging pile is assembled, the fastening force of the PG joint assembly is enhanced, and the wire and cable are not easily detached.

[0016] (2) The structural features of the present utility model are changed, which can improve the processability, reduce the installation technical difficulty, and facilitate large-scale production.

[0017] (3) The overall assembly of the present utility model is simple, easy to operate, convenient for product production and quality control, and greatly reduces the quality risk; this assembly method can better position the flat sealing ring, making the sealing and waterproof effect more stable and reliable, not easily displaced or detached, improving the overall service life of the product, and also improving the protection level of the product. The protection level of the charging pile is increased to IPX7, enabling normal use even when completely immersed in water, meeting the usage conditions in extreme outdoor weather, and greatly improving the usage efficiency of the charging pile. When the cable is installed in the PG waterproof joint assembly, the added PG joint assembly plays a role in positioning and fastening. This structure has a large locking force and meets the requirement of a pull-off force greater than 200N as required by industry standards. The outer sheath of the wire and cable is not easily damaged or ruptured, reducing the risk of electric leakage; ensuring the use function and safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a partial exploded view of the present utility model;

[0020] Figure 3 is a top view of the present utility model;

[0021] Figure 4 is a partial sectional view of the present utility model.

[0022] In the figure: 1, housing; 2, isolation arc plate; 3, mounting threaded post; 4, square plate; 5, positioning post; 6, mounting frame; 7, mounting ring groove; 8, perforation; 9, round nut; 10, sealing sheath; 11, joint body; 12, contact plate; 13, flat sealing ring; 14, nylon flat nut; 15, internal thread part; 16, cylindrical part; 17, external thread part; 18, hollow part; 19, notch; 20, nut limit block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] A waterproof locking structure for a charging pile cable includes: a housing 1 with a hollow interior; symmetric mounting frames 6 respectively fixedly connected to the housing 1, and the symmetric mounting frames 6 are respectively provided with symmetric through holes 8 and symmetric mounting ring grooves 7; adding the mounting ring grooves 7 can prevent the flat sealing ring 13 from leaking out, avoid waterproof failure, and ensure the protection performance; a joint body 11 includes a hollow part 18, an external thread part 17, a cylindrical part 16 and an internal thread part 15, the hollow part 18, the external thread part 17, the cylindrical part 16 and the internal thread part 15 are fixedly connected in sequence, a group of uniformly distributed notches 19 are arranged in the upper middle part of the hollow part 18, a sealing sheath 10 is sleeved in the hollow part 18, and the internal thread part 15 passes through the through hole 8; a round nut 9 is threadedly connected to the external thread part 17; a flat sealing ring 13 matches the cylindrical part 16 and the mounting ring groove 7; a nylon flat nut 14 is threadedly connected to the internal thread part 15, and the nylon flat nut 14 contacts the housing 1. The joint body 11, the sealing sheath 10, the round nut 9, the flat sealing ring 13 and the nylon flat nut 14 form a PG waterproof joint assembly. The sealing sheath 10 and the flat sealing ring 13 are made of silicone rubber material, which has outstanding high and low temperature resistance, ozone resistance and weather aging resistance, and can maintain its unique use elasticity, ozone resistance, weather resistance and other advantages within the working temperature range of -70 to 260°C. Furthermore, the service life of the charging pile is improved; due to the good stretching performance of the silicone rubber material, this structure can accommodate different wire and cable diameters and meet the waterproof requirements. The PG joint assembly is adapted to different wire and cable specifications, greatly saving the middle of materials, saving materials and production costs; the PG joint is a component, and only one installation process is required, which can be manual or automated, greatly improving the assembly efficiency.

[0025] The joint body 11 is fixedly connected to a contact plate 12, the round nut 9 is closely attached to the contact plate 12, and the contact plate 12 is closely attached to the mounting frame 6.

[0026] The contact plate 12 is selected as M32×1.5.

[0027] The corresponding symmetrical perforations 8 of the housing 1 are respectively fixedly connected to symmetrical nut limit blocks 20. The nylon flat nuts 14 and the symmetrical nut limit blocks 20 are matched to form a region. Four nut limit blocks 20 are added to increase the positioning during the assembly of the nylon flat nuts 14 and the housing 1, prevent the nylon flat nuts 14 from falling off, and avoid loosening of the nylon flat nuts 14.

[0028] The distance between the symmetrical nut limit blocks 20 is slightly greater than the distance between the two parallel surfaces of the nylon flat nut 14.

[0029] The housing 1 is fixedly connected to a group of uniformly distributed mounting threaded posts 3.

[0030] The housing 1 is respectively fixedly connected to isolation arc plates 2 corresponding to each of the mounting threaded posts 3.

[0031] The housing 1 is connected to a group of positioning posts 5.

[0032] The housing 1 is connected to a square plate 4.

[0033] The working principle of a waterproof locking structure for a charging pile cable provided by the present utility model is as follows:

[0034] First, install the PG waterproof joint assembly in the following order: insert the sealing sheath 10 into the hollow part 18, tighten the round nut 9, and insert the flat sealing ring 13 into the cylindrical part 16.

[0035] In the second step, install the nylon flat nut 14 in the position of the nut limit block 14 for fixation; the PG waterproof joint assembly passes through the perforation 8 and is tightly assembled with the flat sealing ring 13.

[0036] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A waterproof locking structure for a charging pile cable, characterized in that, Including: A housing (1) with a hollow interior; Symmetrical mounting frames (6) fixedly connected to the housing (1) respectively. The symmetrical mounting frames (6) are respectively provided with symmetrical through holes (8) and symmetrical mounting ring grooves (7); A joint body (11) including a hollow portion (18), an external thread portion (17), a cylindrical portion (16), and an internal thread portion (15). The hollow portion (18), the external thread portion (17), the cylindrical portion (16), and the internal thread portion (15) are fixedly connected in sequence. A set of uniformly distributed notches (19) are provided in the upper middle part of the hollow portion (18). A sealing sheath (10) is sleeved in the hollow portion (18). The internal thread portion (15) passes through the through hole (8); A round nut (9) threadedly connected to the external thread portion (17); A flat sealing ring (13) matching the cylindrical portion (16) and the mounting ring groove (7); A nylon flat nut (14) threadedly connected to the internal thread portion (15) and contacting the housing (1).

2. The waterproof locking structure of the charging pile cable according to claim 1, characterized in that: The joint body (11) is fixedly connected to a contact plate (12). The round nut (9) is closely attached to the contact plate (12), and the contact plate (12) is closely attached to the mounting frame (6).

3. The waterproof locking structure of the charging pile cable according to claim 2, characterized in that: The contact plate (12) is selected as M32×1.

5.

4. The waterproof locking structure of the charging pile cable according to claim 1, wherein: The housing (1) is fixedly connected to symmetrical nut limiting blocks (20) corresponding to the symmetrical through holes (8) respectively. The nylon flat nut (14) matches the area formed by the symmetrical nut limiting blocks (20).

5. The waterproof locking structure of the charging pile cable according to claim 4, characterized in that: The distance between the symmetrical nut limiting blocks (20) is slightly larger than the distance between two parallel surfaces of the nylon flat nut (14).

6. The waterproof locking structure of the charging pile cable according to claim 1, characterized in that: The housing (1) is fixedly connected to a set of uniformly distributed mounting threaded posts (3).

7. The waterproof locking structure of the charging pile cable according to claim 6, characterized in that: The housing (1) is fixedly connected to isolation arc plates (2) corresponding to each mounting threaded post (3) respectively.

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