Stretching gas spring for charging pile cantilever

Abstract

The utility model discloses a stretching gas spring for a charging pile cantilever, which comprises a cylinder body, an inner pipe is arranged in the cylinder body, a piston rod is arranged in the inner pipe, a V-shaped sealing piece, a piston pad, a tension spring piston and a rear side plugging piece are sequentially sleeved at the front end of the piston rod, and a pipe sleeve, a rear end sealing piece and a guide piece are sequentially sleeved at the rear end of the piston rod. The outer end of the plugging piece and the outer end of the guiding piece are each provided with a tail plug, the bottom of the plugging piece and the bottom of the pipe sleeve are arranged in the inner pipe, and the cylinder body and the inner pipe are both filled with nitrogen. The inner chamber and the outer chamber in the stretching gas spring are used for storing gas, the gas compression ratio is small, the linear change of a stress value is smaller, a double-sealing structure is adopted, the gas tightness is good, gas leakage on the inner side is avoided, a vent hole is hidden after the side face of the tail plug is punched, and the product is more attractive.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment, and in particular to a tension gas spring for a charging pile cantilever. Background Technology

[0002] Charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles, enabling them to store enough electricity to support their operation.

[0003] The cantilever of a car charging station is a key component that supports the charging gun cable, and its structure directly affects the user experience and the durability of the equipment.

[0004] A tension gas spring is a mechanical device that uses a combination of compressed gas (usually nitrogen) and hydraulic oil to provide elastic support. It is widely used in automobiles, furniture, industrial equipment, and other fields. In charging pile cantilever arms, it is often used to assist in the raising and lowering of cables to improve operational convenience.

[0005] The existing gas springs for the cantilever arms of charging piles have poor sealing performance and short service life.

[0006] In order to solve the problems existing in the background technology, this utility model provides a tension gas spring for the cantilever of a charging pile. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a tension gas spring for the cantilever of a charging pile.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A tension gas spring for a charging pile cantilever includes a cylinder body, an inner tube inside the cylinder body, a piston rod inside the inner tube, a V-shaped seal, a piston pad, a tension spring piston, and a rear sealing element sequentially fitted at the front end of the piston rod, a sleeve, a rear sealing element, and a guide element sequentially fitted at the rear end of the piston rod, with the rear sealing element located inside the guide element, and tail plugs provided at the outer ends of the sealing element and the guide element, with the bottom of the sealing element and the bottom of the sleeve located inside the inner tube, and nitrogen gas filling both the cylinder body and the inner tube.

[0010] Furthermore, a third sealing ring is provided between the piston rod end and the V-shaped seal.

[0011] Furthermore, the tension spring piston has an annular groove on its outer circumference, and a first sealing ring is provided inside the annular groove.

[0012] Furthermore, the sealing structure includes a large cylindrical structure formed in one piece and a small cylindrical structure located at the bottom of the large cylindrical structure, with the small cylindrical structure located inside the inner tube.

[0013] Furthermore, an annular groove is provided on the outer side of the large cylindrical structure, and a second sealing ring is provided inside the annular groove.

[0014] Furthermore, an annular groove is provided on the outer side of the small cylindrical structure, and a first sealing ring is provided inside the annular groove. Furthermore, an annular groove is provided on the outer side of the guide member, and a second sealing ring is provided inside the annular groove.

[0015] Furthermore, the V-shaped seal is flared, with the upper end face smaller than the lower end face.

[0016] Furthermore, air holes are provided on the side of the tail plug.

[0017] Furthermore, each annular groove is provided with multiple grooves.

[0018] The beneficial effects of this utility model are as follows: the internal chamber of the tension gas spring is divided into an inner chamber and an outer chamber for storing gas, the gas compression ratio is small and the linear change of stress value is smaller, the double-sealed structure has good airtightness and avoids gas leakage inside, and the ventilation hole is hidden after the end plug is drilled on the side, making the product more beautiful. Attached Figure Description

[0019] Figure 1 This utility model provides an overall structural diagram of a tension gas spring for a charging pile cantilever.

[0020] Figure 2 This utility model provides an internal structure for a tension gas spring used in the cantilever of a charging pile. Figure 1 ;

[0021] Figure 3 This utility model provides an internal structure for a tension gas spring used in the cantilever of a charging pile. Figure 2 ;

[0022] Figure 4 This utility model provides an explosive structure diagram of a tension gas spring for a charging pile cantilever.

[0023] Among them, 1. rear end seal, 2. tension spring piston, 3. first sealing ring, 4. second sealing ring, 5. tail plug, 6. guide, 7. cylinder body, 8. sealing component, 9. piston rod, 10. piston pad, 11. inner tube, 12. third sealing ring, 13. V-type seal, 14. sleeve. Detailed Implementation

[0024] The specific solutions and embodiments of this utility model will be further described with reference to the accompanying drawings.

[0025] As shown in the figure, a tension gas spring for a charging pile cantilever includes a cylinder body 7, an inner tube 11 inside the cylinder body 7, and a piston rod 9 inside the inner tube 11. A V-shaped seal 13, a piston pad 10, a tension spring piston 2, and a rear sealing member 8 are sequentially fitted onto the front end of the piston rod 9. A sleeve 14, a rear sealing member 1, and a guide member 6 are sequentially fitted onto the rear end of the piston rod 9, with the rear sealing member 1 located inside the guide member 6. A tail plug 5 is provided at the outer end of both the sealing member 8 and the guide member 6. The bottom of the sealing member 8 and the bottom of the sleeve 14 are located inside the inner tube 11. Both the cylinder body 7 and the inner tube 11 are filled with nitrogen. This structure is not limited in length.

[0026] A third sealing ring 12 is provided between the end of the piston rod 9 and the V-shaped seal 13.

[0027] The tension spring piston 2 has an annular groove on its outer circumference, and a first sealing ring 3 is provided in the annular groove.

[0028] The sealing structure includes a large cylindrical structure formed in one piece and a small cylindrical structure located at the bottom of the large cylindrical structure. The small cylindrical structure is located inside the inner tube 11.

[0029] The outer side of the large cylindrical structure is provided with an annular groove, and a second sealing ring 4 is provided inside the annular groove.

[0030] The small cylindrical structure has an annular groove on its outer side, and a first sealing ring 3 is installed inside the annular groove. The guide member 6 has an annular groove on its outer side, and a second sealing ring 4 is installed inside the annular groove.

[0031] The V-shaped seal 13 is flared, with the upper end face smaller than the lower end face.

[0032] The tail plug 5 has air holes on its side. The holes on the side of the tail plug 5 allow air to enter and exit when the gas spring piston 2 is stretched. After drilling the holes on the side, a sealing process is used to hide the air holes, making the product more aesthetically pleasing.

[0033] There are multiple annular grooves, usually two or three, and the corresponding number of first sealing rings 3 or second sealing rings 4 are also set accordingly.

[0034] After the piston rod 9 is stretched, the gas compression provides the stretching force. The inner chamber (inner chamber) of the stretching gas spring tube 11 and the outer chamber (outer chamber) of the cylinder 7 are used to store gas. A small gas compression ratio results in a smaller linear change in stress value. The V-shaped seal 13 serves as the first seal to prevent gas leakage. The piston uses a double-groove design and is equipped with a sealing ring to prevent leakage from the outside. As the second seal to prevent gas leakage, the sealing member 8 at the piston riveting joint is also equipped with a sealing ring to prevent gas leakage from the inside. The guide member 6 and the sleeve 14 at the end are further sealed at the tail end.

[0035] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A tension gas spring for a charging pile cantilever, comprising a cylinder, characterized in that, The cylinder body is equipped with an inner tube, and a piston rod is installed inside the inner tube. A V-shaped seal, a piston pad, a tension spring piston, and a rear sealing element are sequentially fitted at the front end of the piston rod. A sleeve, a rear sealing element, and a guide are sequentially fitted at the rear end of the piston rod, with the rear sealing element located inside the guide element. A tail plug is provided at the outer end of both the sealing element and the guide element. The bottom of the sealing element and the bottom of the sleeve are located inside the inner tube. The cylinder body and the inner tube are filled with nitrogen.

2. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, A third sealing ring is provided between the piston rod end and the V-shaped seal.

3. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, The tension spring piston has an annular groove on its outer circumference, and a first sealing ring is provided in the annular groove.

4. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, The sealing structure includes a large cylindrical structure formed in one piece and a small cylindrical structure located at the bottom of the large cylindrical structure, with the small cylindrical structure located inside the inner tube.

5. A tension gas spring for a charging pile cantilever according to claim 4, characterized in that, The outer side of the large cylindrical structure is provided with an annular groove, and a second sealing ring is provided inside the annular groove.

6. A tension gas spring for a charging pile cantilever according to claim 5, characterized in that, The small cylindrical structure has an annular groove on its outer side, and a first sealing ring is installed inside the annular groove.

7. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, The guide member has an annular groove on its outer side, and a second sealing ring is provided inside the annular groove.

8. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, The V-shaped seal is flared, with the upper end face smaller than the lower end face.

9. A tension gas spring for a charging pile cantilever according to claim 1, characterized in that, Air holes are provided on the side of the tail plug.

10. A tension gas spring for a charging pile cantilever according to claim 2, 3, 5, 6 or 7, characterized in that, Multiple annular grooves are provided.

Images