阅读说明：本技术 一种悬停式带有气弹簧结构的双向平衡器 (Hovering type bidirectional balancer with air spring structure ) 是由 彭俊 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种悬停式带有气弹簧结构的双向平衡器,涉及平衡器领域。本发明包括缸筒、与缸筒一端相连通的导向套、安装于缸筒另一端封板上的尾堵,缸筒内活动安装有浮动活塞和隔套,隔套上安装有一活塞杆,隔套侧部环绕设置有一圈活塞；活塞杆上设置有一圈密封垫,密封垫与防脱螺母之间套接安装有一弹簧；浮动活塞与缸筒的封板之间的空腔通过充入氮气形成气腔；密封垫与浮动活塞之间的空腔通过注油形成油腔。本发明的产品开启方式加快了流道开启的速度,提高了灵敏度,减小了开启力,并将活塞组件整体置于油腔中,将油腔和气腔分开避免了气体压缩的弹性变化。(The invention discloses a hovering type bidirectional balancer with a gas spring structure, and relates to the field of balancers. The invention comprises a cylinder barrel, a guide sleeve communicated with one end of the cylinder barrel and a tail plug arranged on a sealing plate at the other end of the cylinder barrel, wherein a floating piston and a spacer bush are movably arranged in the cylinder barrel, a piston rod is arranged on the spacer bush, and a circle of piston is arranged on the side part of the spacer bush in a surrounding manner; a circle of sealing gasket is arranged on the piston rod, and a spring is sleeved between the sealing gasket and the anti-drop nut; a cavity between the floating piston and the sealing plate of the cylinder barrel is filled with nitrogen to form an air cavity; the cavity between the sealing gasket and the floating piston forms an oil chamber through oil injection. The product opening mode of the invention accelerates the opening speed of the flow passage, improves the sensitivity, reduces the opening force, and arranges the piston assembly in the oil cavity integrally, and separates the oil cavity and the air cavity to avoid the elastic change of gas compression.)

1. The utility model provides a two-way balancer that formula of hovering has air spring structure, includes cylinder (13), uide bushing (7) that is linked together with cylinder (13) one end, installs tail stifled (14) on cylinder (13) other end shrouding, its characterized in that:

a floating piston (3) attached to the inner wall of the cylinder barrel (13) is movably mounted in the cylinder barrel (13), a circle of positioning groove (11) is arranged at the position, connected with the guide sleeve (7), of the cylinder barrel (13) in a surrounding mode, a spacer sleeve (5) is mounted at one end, adjacent to the positioning groove (11), in the cylinder barrel (13), a piston rod (15) is movably mounted on the spacer sleeve (5), one end of the piston rod (15) extends into the cylinder barrel (13) and is located on the side portion of the floating piston (3), and an anti-falling nut (9) is mounted at one end of the piston rod (15); a circle of pistons (4) in clearance fit with the piston rods (15) are arranged on the side parts, facing the floating piston (3), of the spacer bush (5) in a surrounding manner; a circle of sealing gasket (8) is arranged on the piston rod (15) and positioned between the anti-falling nut (9) and the piston (4) in a surrounding mode, a spring (10) is sleeved between the sealing gasket (8) and the anti-falling nut (9), and two ends of the spring (10) are fixedly connected with the anti-falling nut (9) and the side portion of the sealing gasket (8) respectively;

a cavity between the floating piston (3) and a sealing plate of the cylinder barrel (13) is filled with nitrogen to form an air cavity (1); a cavity between the sealing gasket (8) and the floating piston (3) forms an oil cavity (2) through oil injection;

the end part of the guide sleeve (7) is provided with a flanging (12) in clearance fit with the piston rod (15), and an oil seal (6) is arranged between the positioning groove (11) and the flanging (12) in the guide sleeve (7).

2. The hovering two-way balancer with a gas spring structure according to claim 1, wherein a side of the floating piston (3) facing the piston rod (15) is formed with a blind female hole (301), the blind female hole (301) is adapted to receive and fit with an end of the piston rod (15) mounted with the anti-drop nut (9).

Technical Field

The invention belongs to the field of balancers, and particularly relates to a hovering type bidirectional balancer with a gas spring structure.

Background

A bidirectional balancer is required to be used in the opening process of the automobile back door, so that the back door plays a balancing role in the opening or closing process; the flow channel is opened through piston rod displacement to current product, and the opening process has one section displacement volume, and it is sensitive inadequately to open the reaction, and low resistance product is more obvious, influences the sensitivity, leakproofness and the reliability that the car back of the body door used, consequently to above problem, provides a two-way balancer that hover formula has an air spring structure, lets balanced two resistance air spring react more sensitively, the leakproofness is better at the switching-over in-process, makes the back door open the in-process can not appear can not hover the phenomenon, has important meaning.

Disclosure of Invention

The invention aims to provide a hovering type two-way balancer with a gas spring structure, wherein resistance is generated by the aid of nitrogen pressure in a gas cavity in the compression process of a piston rod, a sealing gasket is in sealing fit with a backflow channel under the pressure of a spring, the gas spring keeps balance at a compression stop position, when the pressure difference between two sides of the piston is smaller than the spring force, a sealing surface is sealed again, two sides of the piston restore balance, the opening mode accelerates the opening speed of a flow channel, improves sensitivity and reduces opening force, a piston assembly is integrally arranged in an oil cavity, and the oil cavity and the gas cavity are separated to avoid elastic change of gas compression.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention discloses a hovering type bidirectional balancer with an air spring structure, which comprises a cylinder barrel, a guide sleeve and a tail plug, wherein the guide sleeve is communicated with one end of the cylinder barrel, the tail plug is arranged on a sealing plate at the other end of the cylinder barrel, a floating piston attached to the inner wall of the cylinder barrel is movably arranged in the cylinder barrel, a circle of positioning grooves are formed in the position, connected with the guide sleeve, of the cylinder barrel in a surrounding mode, a spacer sleeve is arranged at one end, adjacent to the positioning grooves, in the cylinder barrel, a piston rod is movably arranged on the spacer sleeve, one end of the piston rod extends into the cylinder barrel and is positioned on the side portion of the; a circle of pistons in clearance fit with the piston rods are arranged on the spacer sleeve in a surrounding manner towards the side parts of the floating pistons; a circle of sealing gasket is arranged on the piston rod between the anti-falling nut and the piston in a surrounding mode, a spring is sleeved between the sealing gasket and the anti-falling nut, and two ends of the spring are fixedly connected with the anti-falling nut and the side portion of the sealing gasket respectively;

a cavity between the floating piston and the sealing plate of the cylinder barrel is filled with nitrogen to form an air cavity; an oil cavity is formed in a cavity between the sealing gasket and the floating piston through oil injection;

the end part of the guide sleeve is provided with a flange which is in clearance fit with the piston rod, and an oil seal is arranged between the positioning groove and the flange in the guide sleeve.

Furthermore, a concave blind hole is formed in the side part, facing the piston rod, of the floating piston, and the concave blind hole is matched with the end part of the piston rod provided with the anti-drop nut in a containing mode.

The invention has the following beneficial effects:

the invention has the advantages that the resistance generated by the nitrogen pressure in the air cavity in the compression direction and the extension direction are sealed by the plane and the shaft of the piston flow passage to play a role of bidirectional balance, so that the balanced double-resistance air spring has more sensitive reaction and better sealing property in the reversing process, the phenomenon of incapability of hovering in the opening process of the back door is avoided, the opening reversing reaction is more sensitive and the reliability is better because the sealing is plane and inner side double sealing, the product steering process is more sensitive, and the product compression and extension have no elastic displacement variable, so that the low-resistance product has no elastic displacement variable, and the balance function of the product is more reliable.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a hovering bi-directional balancer with a gas spring structure according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-air cavity, 2-oil cavity, 3-floating piston, 301-concave blind hole, 4-piston, 5-spacer bush, 6-oil seal, 7-guide bush, 8-sealing gasket, 9-anti-drop nut, 10-spring, 11-positioning groove, 12-flanging, 13-cylinder barrel, 14-tail plug and 15-piston rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "side", "end", and the like, indicate an orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the hovering type bidirectional balancer with an air spring structure of the present invention includes a cylinder 13, a guide sleeve 7 communicated with one end of the cylinder 13, and a tail plug 14 mounted on a sealing plate at the other end of the cylinder 13, wherein a floating piston 3 attached to an inner wall of the cylinder 13 is movably mounted in the cylinder 13, a circle of positioning groove 11 is disposed around a position where the cylinder 13 is connected to the guide sleeve 7, a spacer 5 is mounted at one end of the cylinder 13 adjacent to the positioning groove 11, a piston rod 15 is movably mounted on the spacer 5, one end of the piston rod 15 extends into the cylinder 13 and is located at a side of the floating piston 3, and an anti-drop nut 9 is mounted at one end of the piston rod 15; a circle of pistons 4 in clearance fit with the piston rods 15 are arranged on the spacer 5 in a surrounding manner at the side parts facing the floating piston 3; a circle of sealing gasket 8 is arranged on the piston rod 15 between the anti-falling nut 9 and the piston 4 in a surrounding mode, a spring 10 is sleeved between the sealing gasket 8 and the anti-falling nut 9, and two ends of the spring 10 are fixedly connected with the anti-falling nut 9 and the side portion of the sealing gasket 8 respectively;

a cavity between the floating piston 3 and a sealing plate of the cylinder barrel 13 is filled with nitrogen to form an air cavity 1; the cavity between the sealing gasket 8 and the floating piston 3 is filled with oil to form an oil cavity 2;

the end of the guide sleeve 7 is provided with a flange 12 in clearance fit with the piston rod 15, and an oil seal 6 is arranged between the positioning groove 11 and the flange 12 in the guide sleeve 7.

The side of the floating piston 3 facing the piston rod 15 is provided with a concave blind hole 301, and the concave blind hole 301 is matched with the end of the piston rod 15 provided with the anti-drop nut 9.

Wherein, the cylinder barrel 13 is provided with a liquid inlet hole and a sealing plug which are communicated with the oil chamber 2.

The working principle of the invention is as follows:

the piston rod 15 generates resistance in the compression process through the nitrogen pressure in the air cavity 1, and hydraulic oil is injected through a liquid inlet hole in the cylinder barrel 13 and communicated with the oil cavity 2 to generate resistance in the compression process; when the compression force is removed, the sealing gasket 8 seals the backflow channel under the pressure of the spring 10, at the moment, the spring 10 and the end face of the piston 4 are pressed to be in a sealing state, the gas spring 10 stays at a compression stop position to keep balance, when the stroke is required to be pulled outwards, the sealing element spring is pushed to be compressed after pressure difference is generated on two sides of the piston 4, the end face of the sealing gasket 8 and the sealing inner lip are quickly separated, and the product stroke is pulled out; when the pulling force is removed, the pressure difference between the two sides of the piston 4 is smaller than the spring force, the sealing surface is sealed again, the two sides of the piston 4 are restored to be balanced, the opening mode accelerates the opening speed of the flow channel, improves the sensitivity, reduces the opening force, and places the piston assembly in the oil cavity 2 integrally, so that the oil cavity 2 and the air cavity 1 are separated to avoid the elastic change of gas compression.

The invention belongs to a bidirectional balancer used in the opening process of an automobile back door, which plays a role in balancing the back door in the opening or closing process, the compression direction of the bidirectional balancer is through resistance generated by the pressure of nitrogen in a gas cavity, the extension direction of the bidirectional balancer is through plane and shaft sealing of a piston flow passage, so that a balanced double-resistance gas spring has more sensitive reaction and better sealing property in the reversing process, the back door cannot hover phenomenon in the opening process, the opening reversing reaction is more sensitive because the sealing is plane and inner side double sealing, the reliability is better, the product steering process is more sensitive, the product compression and extension have no elastic displacement variable, the low-resistance product has no elastic displacement variable, and the balance function of the product is more reliable.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.