Novel adjustable piston floor spring

By setting an adjustment hole in the middle of the front cover and using a core adjusting pin to adjust the size of the piston oil hole, the problems of oil leakage and inconvenient operation when adjusting the cushioning force of traditional floor spring products are solved, achieving precise adjustment of the cushioning force and convenient operation.

CN224134455UActive Publication Date: 2026-04-17陈巨雄
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
陈巨雄
Filing Date
2025-04-08
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Traditional floor springs suffer from problems such as oil leakage, reduced cushioning force, and inconvenience in operation when adjusting the cushioning force, especially after disassembling the outer casing for adjustment.

Method used

By setting an adjustment hole in the middle of the front cover and using an adjusting pin to directly insert into the oil hole of the adjusting piston, the buffer force can be adjusted, avoiding the need for the outer shell to cover the area and simplifying the adjustment process.

Benefits of technology

It enables precise adjustment of the cushioning force, avoids oil leakage and shell disassembly, and improves the ease of operation and product lifespan.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224134455U_ABST
Patent Text Reader

Abstract

The utility model relates to a novel adjustable piston floor spring which is used for door installation and is characterized in that a front cover, a piston, a spring and a tail cover are sequentially installed in an oil cavity of a shell from front to back, an adjusting hole is formed in the middle of the front cover, a core adjusting needle is installed in the adjusting hole through threads, and one end of the core adjusting needle penetrates through the front cover and protrudes towards the interior of the shell. An oil way through hole is formed in the position, opposite to the front cover adjusting hole, of the front end of the piston, the core adjusting needle penetrates through the front cover and extends into the shell to be inserted into the oil way through hole, and the size of an opening of the oil way through hole can be adjusted by rotating the core adjusting needle forwards and backwards. The utility model has the advantages that the response is quick, the door opening and closing speed and the buffering force can be enhanced through left-right fine adjustment, and the door cannot be damaged due to excessive force; the oil tank is firm, durable, safe and silent, the service life of the product is prolonged, and the oil tank is more convenient to install and adjust and can be adjusted at any time.
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Description

Technical Field

[0001] This utility model relates to a novel adjustable piston floor spring, specifically a floor spring in which the size of the piston oil hole can be directly adjusted by an adjusting pin. Background Technology

[0002] Traditional floor springs typically have an adjustable plug installed on the side. The damping force of the door is adjusted by regulating the oil circuit through the adjusting core. This can lead to oil leakage or a decrease in damping force, and even a slight force when opening or closing the door can damage it. Furthermore, since the springs are installed on the side and are covered by a casing, adjustments require removing the casing first, making operation inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a novel adjustable piston floor spring. It adjusts the size of the oil hole of the piston inside the outer casing by directly inserting the adjusting pin installed on the front cover, thereby adjusting the buffering force of the floor spring. Since the floor spring is not covered by the outer casing, it is more convenient to adjust, thus achieving the best effect when opening and closing the door.

[0004] The technical solution of this utility model is based on the outer shell, front cover, piston, spring, tail cover, rotating shaft, top cover, adjusting pin, and bearing. The feature is that the front cover, piston, spring, and tail cover are installed in the oil cavity of the outer shell from front to back. An adjustment hole is provided in the middle of the front cover. The adjusting pin is installed into the adjustment hole by thread, and one end protrudes into the outer shell through the front cover. An oil passage hole is provided at the front end of the piston and the adjustment hole of the front cover. The end of the adjusting pin that extends into the outer shell through the front cover is inserted into the oil passage hole. The size of the opening of the oil passage hole can be adjusted by rotating the adjusting pin in both directions.

[0005] The piston of this invention has a groove in the middle of its top, a boss protruding inward from the inner side of the front end of the groove, a through hole in the middle of the top of the groove, a rotating shaft installed into the outer shell through a top cover, a cam is provided in the middle of the rotating shaft opposite to the boss, and the bottom of the rotating shaft passes through the through hole in the middle of the top of the piston groove and is connected to the bearing at the bottom of the piston in the outer shell.

[0006] The working principle of this utility model is based on the structural design of the front cover and piston. The adjusting plug is set on one side of the outer shell. Instead of adjusting the oil circuit, the piston is adjusted. The speed and buffering force of the door are adjusted by adjusting the size of the piston oil circuit orifice. Moreover, since there is no outer shell covering, it is more convenient to adjust, thereby achieving the best effect when opening and closing the door.

[0007] The advantages of this invention are: rapid response, with slight left and right adjustments enhancing the speed and cushioning of the door opening and closing, preventing damage due to excessive force; sturdy and durable, preventing oil leaks and lack of cushioning; safe and quiet, increasing product lifespan; and convenient installation and adjustment, allowing for adjustments at any time. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0009] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0010] Figure 3 This is an exploded three-dimensional structural diagram of the present invention. Detailed Implementation

[0011] according to Figure 1 , Figure 2 , Figure 3 As shown, this utility model, based on the outer shell 1, front cover 2, piston 3, spring 4, tail cover 5, rotating shaft 6, top cover 7, adjusting pin 8, and bearing 9, is characterized in that the front cover 2, piston 3, spring 4, and tail cover 5 are installed sequentially from front to back in the oil cavity of the outer shell 1. An adjustment hole is provided in the middle of the front cover 2. The adjusting pin 8 is threaded into the adjustment hole, with one end protruding into the outer shell 1 through the front cover 2. An oil passage hole is provided at the front end of the piston 3, opposite to the adjustment hole of the front cover. The end of the adjusting pin 8 extending into the outer shell through the front cover is inserted into the oil passage hole, and the size of the oil passage hole can be adjusted by rotating the adjusting pin 8 clockwise and counterclockwise. A groove is provided in the middle of the top of the piston 3, and a boss 3.1 protrudes inward from the inner side of the front end of the groove. A through hole is provided in the middle of the top of the groove. The rotating shaft is installed into the outer shell through the top cover. A cam 6.1 is provided in the middle of the rotating shaft, opposite to the boss. The bottom of the rotating shaft passes through the through hole in the middle of the top of the piston groove and connects to the bearing located at the bottom of the piston inside the outer shell.

Claims

1. A new adjustable piston ground spring comprising a housing, a front cover, a piston, a spring, a tail cover, a pivot, a top cover, an adjusting core needle, a bearing, characterized in that, The front cover, piston, spring, and tail cover are installed sequentially from front to back in the oil chamber of the outer shell. An adjustment hole is provided in the middle of the front cover. The adjusting pin is installed into the adjustment hole by thread, and one end of the adjusting pin protrudes into the outer shell through the front cover. An oil passage hole is provided at the front end of the piston relative to the adjustment hole of the front cover. The end of the adjusting pin that extends into the outer shell through the front cover is inserted into the oil passage hole. The size of the opening of the oil passage hole can be adjusted by rotating the adjusting pin in both directions.

2. A novel adjustable ground spring as claimed in claim 1, wherein, The piston has a groove in the middle of its top, and a boss protrudes inward from the inner side of the front end of the groove. A through hole is provided in the middle of the top of the groove. The rotating shaft is installed into the outer shell through the top cover. A cam is provided in the middle of the rotating shaft at the position opposite to the boss. The bottom of the rotating shaft passes through the through hole in the middle of the top of the piston groove and is connected to the bearing at the bottom of the piston in the outer shell.