Inhaul cable sealing structure of new energy automobile charging protection electronic lock

Abstract

The invention relates to an inhaul cable sealing structure of a new energy automobile charging protection electronic lock. The inhaul cable sealing structure comprises an inhaul cable sleeve and an inhaul cable, and the inhaul cable is an injection molding shell steel wire rope with a steel wire rope inner core and an injection molding shell; the device further comprises a plastic pipe head and a rubber waterproof sleeve. The inner end of the plastic pipe head is fixedly assembled with the inhaul cable sleeve, a clamping assembly structure is formed between the outer end of the plastic pipe head and the rubber waterproof sleeve, and a first interference fit part is formed; the outer end of the plastic pipe head and the outer surface of the injection molding shell steel wire rope form a second interference fit part, and a circle of arc-shaped notches are formed in the interference fit face of the second interference fit part. The waterproof structure at the tail end of the electronic lock is newly designed, the structure of the inhaul cable is changed in a matched mode, and the complete high-level waterproof function can be achieved while normal work of the inhaul cable is finally achieved.

Description

Technical Field

[0001] The present invention relates to a charging protection electronic lock for new energy vehicles, and more particularly to a cable sealing structure of a charging protection electronic lock for new energy vehicles, belonging to the technical field of charging protection electronic locks. Background Art

[0002] With the rapid development of new energy vehicles, both pure electric vehicles and plug-in hybrid vehicles need to charge their batteries during daily use, and the charging voltage is often as high as about 220V - 750V. In order to improve the charging safety, according to the provisions of "GBT20234.1 - 2015 Electric vehicle conductive charging connection device: Part 1", the charging connection device of new energy vehicles should have a locking function to prevent the charging gun from accidentally disconnecting or being manually unplugged during the charging process. The device responsible for the locking function is the charging protection electronic lock mentioned in this application.

[0003] The electronic lock for charging protection of new energy vehicles generally has a cable. The function of the cable is that in case of an emergency such as the failure of the electronic lock, the operator can manually pull the tail end of the cable to drive the head end of the cable to apply a pulling force to the lock, so that the electronic lock can achieve the unlocking function. During this period, relative movement will occur between the cable and the cable sheath.

[0004] Currently, the tail end of the cable of the charging protection electronic lock of new energy vehicles is generally designed to be lower than the electronic lock body. To a certain extent, this can prevent water flow from entering the interior of the electronic lock body along the cable and the cable sheath. However, there are also some vehicle models that need to design the tail end of the cable to be higher than the electronic lock body. In this case, water flow may eventually enter the interior of the electronic lock body along the cable and the cable sheath, which will have an adverse impact on the waterproof function of the electronic lock. Summary of the Invention

[0005] The present invention aims to provide a cable sealing structure for a charging protection electronic lock of new energy vehicles, to newly design the waterproof structure at the tail end of the electronic lock, and cooperate with the structural change of the cable itself, so as to finally achieve the normal operation of the cable while also achieving a complete high-level waterproof function.

[0006] The present invention adopts the following technical solutions:

[0007] A cable sealing structure for a new energy vehicle charging protection electronic lock comprises a cable sleeve 7 and a cable, wherein the cable is an injection molded steel wire rope 3 having a steel wire rope inner core and an injection molded outer shell; further comprising a plastic tube head 1 and a rubber waterproof sleeve 2; the inner end of the plastic tube head 1 is fixedly assembled with the cable sleeve, and a snap-fit assembly structure is formed between the outer end and the rubber waterproof sleeve 2, and a first interference fit portion 5 is formed; the outer end of the plastic tube head 1 forms a second interference fit portion 6 with the outer surface of the injection molded steel wire rope 3, and a circle of arc-shaped notches 4 are provided on the interference fit surface of the second interference fit portion 6.

[0008] Preferably, the plastic pipe head 1 has a conical structure in the axial direction, and the end of the conical structure is connected to the large end of a cylinder; correspondingly, the interior of the rubber waterproof sleeve 2 has a central hole structure that is compatible with the conical structure and the large end of the cylinder.

[0009] Furthermore, the thickness of the large end of the cylinder is 1.5 mm.

[0010] Furthermore, the maximum interference fit size of the first interference fit portion 5 is 0.5 mm.

[0011] Furthermore, the interference fit size of the second interference fit portion 6 is 0.2 mm.

[0012] Furthermore, the arc-shaped notch 4 has a maximum height of 0.3-0.4 mm.

[0013] Furthermore, the arc-shaped notch 4 divides the second interference fit portion 6 into two parts, an inner part and an outer part, the length of the inner part is smaller than the outer part, and when the user pulls the injection-molded shell steel wire rope 3 by hand, the inner part is deformed first, and then the static friction between the rope and the rubber waterproof cover 2 is transformed into sliding friction, and the deformed part is quickly reset.

[0014] Preferably, the outer surface of the injection-molded housing is smooth.

[0015] The beneficial effects of the present invention are: providing a cable sealing structure for a new energy vehicle charging protection electronic lock, a completely new design of the waterproof structure at the tail end of the electronic lock, and combined with the structural changes of the cable itself, ultimately achieving normal operation of the cable while also achieving a complete high-level waterproof function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a new energy vehicle charging protection electronic lock and a cable (including the cable sealing structure of the present invention).

[0017] Figure 2 It is a longitudinal section view of the cable sealing structure of the new energy vehicle charging protection electronic lock of the present invention.

[0018] Among them, (a) is the rendering drawing, and (b) is the wireframe drawing.

[0019] Figure 3 It is a longitudinal sectional detail drawing of the cable sealing structure of the charging protection electronic lock for new energy vehicles of the present invention.

[0020] In the figure, 1. Plastic pipe head, 2. Rubber waterproof sleeve, 3. Injection molded shell steel wire rope, 4. Circular arc-shaped notch, 5. First interference fit part, 6. Second interference fit part, 7. Cable sheath. Specific implementation mode

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] See Figure 1 , a cable sealing structure of a charging protection electronic lock for new energy vehicles, including a cable sheath 7 and a cable. The cable is an injection molded shell steel wire rope 3 with a steel wire rope inner core and an injection molded outer shell.

[0023] Figure 2 It can be seen that the cooperative design of the rubber waterproof sleeve 2, the injection molded shell steel wire rope 3, and the plastic pipe head 1. The red part is an interference fit, which generates a compressive force among the three to produce a sealing effect and ensure that water will not flow into the interior of the electronic lock body.

[0024] Continue to see Figure 2-3 And in conjunction with Figure 1 , it also includes a plastic pipe head 1 and a rubber waterproof sleeve 2; the inner end of the plastic pipe head 1 is fixedly assembled with the cable sheath, and a clamping and assembling structure is formed between the outer end and the rubber waterproof sleeve 2, forming a first interference fit part 5; the outer end of the plastic pipe head 1 forms a second interference fit part 6 with the outer surface of the injection molded shell steel wire rope 3, and a circular arc-shaped notch 4 is provided on the interference fit surface of the second interference fit part 6, as Figure 3 shown.

[0025] An electronic lock for charging protection of new energy vehicles generally has a cable. The function of the cable is that in case of an emergency such as the failure of the electronic lock, the operator can manually pull the tail end of the cable to drive the head end of the cable to apply a pulling force to the lock, so that the electronic lock realizes the unlocking function. During this period, relative movement will occur between the cable and the cable sheath.

[0026] The structure of the steel wire rope of an ordinary cable is a structure in which several strands of ropes are spirally twisted together. Therefore, the outer surface is uneven and it is difficult to form a seal with the rubber waterproof sleeve. Therefore, the present invention designs the structure of the cable to have a structure with an injection molded shell added to the outside of the steel wire rope, that is, the injection molded shell steel wire rope 3, so that the outer surface of the cable is smooth and it is easy to form a water seal with the rubber waterproof sleeve 2.

[0027] In this embodiment, see Figure 2, the plastic pipe head 1 has a conical structure axially, and the end of the conical structure is connected to the large end of a cylinder; correspondingly, the inner part of the rubber waterproof sleeve 2 has a central hole structure adapted to the conical structure and the large end of the cylinder, and this structure can form a reverse buckle structure, so that a good assembly is formed between the rubber waterproof sleeve 2 and the plastic pipe head 1.

[0028] As a preferred embodiment, see Figure 3 , the thickness of the large end of the cylinder is 1.5 mm.

[0029] Figure 3 From the perspective of the two-dimensional drawing, the matching design of the rubber waterproof sleeve and the plastic pipe head is further introduced. The designed length dimension is 1.5 mm, and the radial interference fit is 0.5 mm. The matching design of the rubber waterproof sleeve and the injection-molded steel wire rope is that the designed length is 6.5 mm, and the radial interference fit is 0.2 mm. The interference fit dimension is the deformation dimension generated by the rubber body.

[0030] Specifically, see Figure 3 , the maximum interference fit dimension of the first interference fit part 5 is 0.5 mm.

[0031] Specifically, see Figure 3 , the interference fit dimension of the second interference fit part 6 is 0.2 mm.

[0032] Specifically, see Figure 3 , the height at the maximum height of the arc-shaped notch 4 is 0.3 - 0.4 mm (this dimension is not shown in the attachment Figure 3 ).

[0033] Specifically, see Figure 3 and in combination with Figure 2 , the arc-shaped notch 4 divides the second interference fit part 6 into an inner part and an outer part. The length of the inner part is less than that of the outer part. When the user pulls the injection-molded shell steel wire rope 3 by hand, the inner part deforms first, and then the static friction between the cable and the rubber waterproof sleeve 2 is changed into sliding friction, and the deformed part quickly returns to its original position.

[0034] Figure 2 The bright red part in (a) is the interference fit part. The so-called "interference fit" dimension is actually the dimension of the elastic deformation of the rubber part.

[0035] As a preferred embodiment, the outer surface of the injection-molded shell is smooth. It is beneficial to realize the waterproof closing function with the rubber waterproof sleeve 2.

[0036] The present invention provides a cable sealing structure for a charging protection electronic lock of a new energy vehicle, which newly designs the waterproof structure at the end of the electronic lock and, in combination with the structural change of the cable itself, finally realizes the normal operation of the cable while also achieving a complete high-level waterproof function. On the premise of ensuring the protection level, the interference fit between different parts can be designed for use, which can not only achieve the purpose of tight fitting but also help improve the waterproof and protection level.

[0037] Generally, the protection level requirements for waterproof and dustproof of new energy vehicle manufacturers and national standards are IP55. However, in actual use, due to the different installation positions of the product on the vehicle and non-conventional operations, there are problems of water ingress and failure of the product. The present invention actually provides a product with a higher waterproof level, which can ensure that the entire electronic lock meets the protection requirements of IP67, improves the protection level and quality level of the electronic lock, and meets various usage scenarios of new energy vehicles. After adding the waterproof sleeve, the entire product can be placed in 1-meter-deep water for 30 minutes without water entering.

[0038] Through the interference fit of 0.2 - 0.5 mm among the rubber waterproof sleeve, the injection-molded steel wire rope, and the plastic pipe head, a compression force is generated among the three to produce a sealing effect, ensuring that water will not flow into the interior of the electronic lock body and preventing the electronic lock from malfunctioning due to water ingress.

[0039] The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various transformations or improvements on this basis. Without departing from the general concept of the present invention, these transformations or improvements should all fall within the scope of protection required by the present invention.

Claims

1. A cable sealing structure for a charging protection electronic lock of a new energy vehicle, comprising a cable sleeve (7) and a cable, characterized in that: The cable is an injection-molded shell steel wire rope (3) having a steel wire rope inner core and an injection-molded outer shell; It further includes a plastic pipe head (1) and a rubber waterproof sleeve (2); The inner end of the plastic pipe head (1) is fixedly assembled with the cable sleeve, and a clamping assembly structure is formed between the outer end and the rubber waterproof sleeve (2), and a first interference fit portion (5) is formed; The outer end of the plastic pipe head (1) and the outer surface of the injection-molded shell steel wire rope (3) form a second interference fit portion (6), and a circular arc-shaped notch (4) is provided on the interference fit surface of the second interference fit portion (6).

2. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 1, characterized in that: The plastic pipe head (1) has a conical structure axially, and the end of the conical structure is connected to the large end of a cylinder; correspondingly, the inner part of the rubber waterproof sleeve (2) has a central hole structure adapted to the conical structure and the large end of the cylinder.

3. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 2, characterized in that: The thickness of the large end of the cylinder is 1.5 mm.

4. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 3, characterized in that: The maximum interference fit dimension of the first interference fit portion (5) is 0.5 mm.

5. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 4, characterized in that: The interference fit dimension of the second interference fit portion (6) is 0.2 mm.

6. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 2, characterized in that: The height at the maximum height of the circular arc-shaped notch (4) is 0.3 - 0.4 mm.

7. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 6, wherein: The circular arc-shaped notch (4) divides the second interference fit portion (6) into an inner part and an outer part, and the length of the inner part is less than that of the outer part. When the user pulls the injection-molded shell steel wire rope (3) by hand, the inner part deforms first, and then the static friction between the cable and the rubber waterproof sleeve (2) is changed into sliding friction, and the deformed part quickly returns to its original position.

8. The cable sealing structure of the charging protection electronic lock for new energy vehicles according to claim 1, characterized in that: The outer surface of the injection-molded outer shell is smooth.

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