阅读说明：本技术 自锁式压缩气弹簧 (Self-locking compressed air spring ) 是由 陶声荣 李晓刚 于 2019-12-17 设计创作，主要内容包括：本发明公开了一种自锁式压缩气弹簧,包括：缸筒,缸筒的一端封闭或密封,缸筒另一端设有第一密封组件,缸筒内壁上设有内螺纹；位于缸筒内的活塞,活塞的外壁上设有外螺纹,缸筒与活塞通过内螺纹与外螺纹配合；活塞杆,活塞杆的一端与活塞连接,活塞杆的另一端穿过第一密封组件暴露在缸筒外部；支撑组件,所述缸筒或活塞杆可旋转地安装在支撑组件上；气体,气体设置在缸筒内,在非锁止状态时,作用于活塞上的气体以及在缸筒与活塞的内螺纹与外螺纹配合作用下使缸筒或与活塞连接的活塞杆运动；与缸筒或活塞杆配合时对运动的缸筒或活塞杆形成锁止的锁止机构。本发明的自锁式压缩气弹簧具有状态稳定的优点。(The invention discloses a self-locking compressed gas spring, which comprises: one end of the cylinder barrel is closed or sealed, the other end of the cylinder barrel is provided with a first sealing assembly, and the inner wall of the cylinder barrel is provided with internal threads; the piston is positioned in the cylinder barrel, the outer wall of the piston is provided with an external thread, and the cylinder barrel and the piston are matched with the external thread through the internal thread; one end of the piston rod is connected with the piston, and the other end of the piston rod passes through the first sealing assembly and is exposed outside the cylinder barrel; the cylinder barrel or the piston rod is rotatably arranged on the supporting component; the gas is arranged in the cylinder barrel, and in a non-locking state, the gas acting on the piston and the cylinder barrel or a piston rod connected with the piston move under the matching action of the internal thread and the external thread of the cylinder barrel and the piston; and a locking mechanism which is matched with the cylinder barrel or the piston rod and locks the moving cylinder barrel or the moving piston rod. The self-locking compression gas spring has the advantage of stable state.)

1. From locking-type compressed gas spring, its characterized in that includes:

one end of the cylinder barrel is closed or sealed, the other end of the cylinder barrel is provided with a first sealing assembly, and the inner wall of the cylinder barrel is provided with internal threads;

the piston is positioned in the cylinder barrel, the outer wall of the piston is provided with an external thread, and the cylinder barrel and the piston are matched with the external thread through the internal thread;

one end of the piston rod is connected with the piston, and the other end of the piston rod passes through the first sealing assembly and is exposed outside the cylinder barrel;

the cylinder barrel or the piston rod is rotatably arranged on the supporting component;

the gas is arranged in the cylinder barrel, and in a non-locking state, the gas acting on the piston and the cylinder barrel or a piston rod connected with the piston move under the matching action of the internal thread and the external thread of the cylinder barrel and the piston;

and a locking mechanism which is matched with the cylinder barrel or the piston rod and locks the moving cylinder barrel or the moving piston rod.

2. The self-locking compressed gas spring as claimed in claim 1, wherein in the unlocked state the gas acting on the piston and the piston are caused to move linearly and/or rotationally by the cylinder barrel in cooperation with the internal and external threads of the piston, the piston rod following the piston.

3. The self-locking compressed gas spring as claimed in claim 1, wherein in the unlocked condition the gas acting on the piston and the cylinder are caused to move linearly and/or rotationally by the cooperation of the cylinder with the internal and external threads of the piston.

4. A self-locking compression gas spring according to one of claims 1 to 3, characterized in that the support assembly comprises:

a base body;

the bearing is arranged on the seat body.

5. A self-locking compressed gas spring as claimed in any one of claims 1 to 3, wherein at least a portion of the locking mechanism is mounted on a support assembly.

6. Self-locking compression gas spring according to one of the claims 1 to 3, wherein the locking mechanism is a rotational locking mechanism limiting the rotation of the cylinder or piston rod.

7. The self-locking compressed gas spring as recited in claim 6, wherein the rotational locking mechanism comprises:

the gear is fixed with the cylinder barrel or the piston rod;

a positioning member for restricting rotation of the gear when engaged with the gear;

the traction assembly is connected with the positioning component;

and the elastic component is sleeved on the traction assembly, one end of the elastic component is matched with the positioning component, and the other end of the elastic component is matched with the traction assembly or the matched supporting assembly.

8. The self-locking compressed gas spring as recited in claim 7, wherein the draft assembly includes:

one end of the sleeve is fixed with the support component;

and the inhaul cable penetrates through the sleeve and then is connected with the positioning component.

9. The self-locking compressed gas spring as claimed in any one of claims 1 to 3, wherein the locking mechanism is a clasping locking mechanism comprising an inner support, an outer support, a pendulum rod, a clasping block, a pull rope, wherein a cylinder or a piston rod passes through the inner support, the middle of the pendulum rod is hinged to the inner support, one end of the outer support is hinged to one end of the pendulum rod, the other end of the pendulum rod is connected to the clasping block, and the pull rope is connected to the outer support.

10. The self-locking compression gas spring as claimed in any one of claims 1 to 3, wherein the locking mechanism comprises a first friction disc, a second friction disc, a spring, a push rod, and a guide rod, the first friction disc is fixed to the cylinder or the piston rod, one end of the spring abuts against the second friction disc, the other end of the spring abuts against the support assembly, the second friction disc is provided with a fitting hole, one end of the guide rod is connected to the support assembly, and the other end of the guide rod extends into the fitting hole of the second friction disc.

Technical Field

The invention relates to a self-locking type compression gas spring.

Background

The high-pressure self-locking compressed gas spring is suitable for occasions such as lifting and pitching of a seat, opening and closing of a door, lifting of mechanical devices and the like. Because these devices are in direct contact with people, the gas spring is generally required to have higher safety and reliability so as to ensure that no accident occurs during action; the stress solving structure is simple, so that the installation, the use and the maintenance are convenient; the auxiliary power required during working is small, the lifting force is constant, and a buffer mechanism is arranged to avoid damage; when lifting, it should be ensured that the device can stay at any position at any time.

The existing self-locking compressed gas spring has an unreasonable structure, and when the self-locking compressed gas spring is lifted to a required position, theoretically, the pressures on two sides of a piston in the self-locking compressed gas spring are balanced, but if a user applies pressure or lifting acting force to the upper part or the lower part (such as a table top or table legs) of a mechanism to be lifted without attention, the pressure inside the gas spring is changed, so that the upper part or the lower part (such as the table top or the table legs) of the mechanism to be lifted is in a floating state. Therefore, the prior self-locking compression gas spring cannot ensure the stability of the state of the gas spring in the use process.

Disclosure of Invention

The invention provides a self-locking compression gas spring with a stable state.

The scheme for achieving the purpose is as follows:

self-locking compressed gas spring, comprising:

one end of the cylinder barrel is closed or sealed, the other end of the cylinder barrel is provided with a first sealing assembly, and the inner wall of the cylinder barrel is provided with internal threads;

the piston is positioned in the cylinder barrel, the outer wall of the piston is provided with an external thread, and the cylinder barrel and the piston are matched with the external thread through the internal thread;

one end of the piston rod is connected with the piston, and the other end of the piston rod passes through the first sealing assembly and is exposed outside the cylinder barrel;

the cylinder barrel or the piston rod is rotatably arranged on the supporting component;

the gas is arranged in the cylinder barrel, and in a non-locking state, the gas acting on the piston and the cylinder barrel or a piston rod connected with the piston move under the matching action of the internal thread and the external thread of the cylinder barrel and the piston;

and a locking mechanism which is matched with the cylinder barrel or the piston rod and locks the moving cylinder barrel or the moving piston rod.

The invention has the advantages that: the self-locking type compressed gas spring is enabled to move through gas pressure acting on the piston and the cylinder barrel or a piston rod connected with the piston under the matching action of the internal thread and the external thread of the cylinder barrel and the piston, so that the self-locking type compressed gas spring is enabled to rise or fall (external pressure is applied to a supporting mechanism (such as a table top) which needs to rise and fall when the self-locking type compressed gas spring is lowered), when locking is needed, the self-locking type compressed gas spring is matched with the moving cylinder barrel or the moving piston rod through the locking mechanism, the cylinder barrel or the piston rod is enabled to stop moving through the locking action generated by the locking mechanism, locking is formed on the. And the self-locking compression gas spring is kept in a locking state through the matching action of the locking mechanism and the cylinder barrel or the piston rod, so that even if lifting or pressing acting force is applied to the upper part or the lower part (such as a table top or table legs) of the mechanism needing to be lifted, the locking of the self-locking compression gas spring cannot be released, and the self-locking compression gas spring is always in a stable state after stopping working.

Drawings

FIG. 1 is a schematic exterior view of a first self-locking compression gas spring in accordance with the present invention;

FIG. 2 is a cross-sectional view of a first self-locking compressed gas spring of the present invention;

FIG. 3 is a schematic view of a housing in a first self-locking compressed gas spring;

FIG. 4 is a schematic view of a positioning member in a first self-locking compression gas spring;

FIG. 5 is a cross-sectional view of a second self-locking compressed gas spring of the present invention;

FIG. 6 is a cross-sectional view of a third self-locking compressed gas spring of the present invention;

FIG. 7 is a schematic view of a second locking mechanism of the present invention;

fig. 8 is a schematic view of a third locking mechanism of the present invention.

Detailed Description