CN217736123U

CN217736123U - Vertical air spring pull groove hydraulic rod for automobile back door

Info

Publication number: CN217736123U
Application number: CN202221757906.4U
Authority: CN
Inventors: 王素凤
Original assignee: Yangzhou Yisheng Auto Parts Co ltd
Current assignee: Yangzhou Yisheng Auto Parts Co ltd
Priority date: 2022-07-09
Filing date: 2022-07-09
Publication date: 2022-11-04
Anticipated expiration: 2032-07-09

Abstract

The utility model relates to an air spring field especially relates to a car back door vertical type air spring trombone slide hydraulic stem. The vertical type air spring pull groove hydraulic rod for the back door of the automobile comprises a cylinder barrel, an oil gas cavity is arranged in the cylinder barrel, air holes communicated with the oil gas cavity are formed in the side walls of two ends of the cylinder barrel, conversion joints are arranged in the air holes, a sealing end cover is fixedly arranged at one end of the cylinder barrel, and a sealing guide sleeve is arranged at the other end of the cylinder barrel; the piston rod is slidably arranged in the sealing guide sleeve, one end of the piston rod, which extends into the cylinder barrel, is sleeved with a sealing piston, the sealing piston is slidably connected with the inner side wall of the cylinder barrel, and the other end of the piston rod is provided with a joint bolt; the guide assembly is used for the telescopic guide of the piston rod and is arranged in the sealing end cover and extends into the cylinder barrel, and the guide assembly comprises a guide rod. The utility model provides a car back door vertical type air spring pull groove hydraulic stem has and has flexible direction, prevents the vibration skew, long service life's advantage.

Description

Vertical air spring pull groove hydraulic rod for automobile back door

Technical Field

The utility model relates to an air spring field especially relates to a car back door vertical type air spring trombone slide hydraulic stem.

Background

The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a connector and the like. The principle is that inert gas or oil-gas mixture is filled into a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston.

In the production of automobiles, the automatic opening, closing and supporting of the back door of the automobile are controlled by the gas spring, but the traditional gas spring consisting of a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (referring to a controllable gas spring), a connector and the like is utilized, and in the using process, the gas spring is influenced by the vibration of the automobile for a long time, the piston rod is pressed to easily cause the position between a piston rod body and the sealing guide sleeve, the sealing between the piston and the pressure cylinder fails, the gas spring is easy to damage, and the service life is low.

Therefore, there is a need to provide a new vertical gas spring slot hydraulic rod for a back door of an automobile to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a car back door vertical type air spring trombone slide hydraulic stem with flexible direction prevents the vibration skew, long service life.

The utility model provides a car back door vertical type air spring pull groove hydraulic stem includes: the oil-gas cylinder is internally provided with an oil-gas cavity, the side walls of two ends of the cylinder are respectively provided with a gas hole communicated with the oil-gas cavity, the gas holes are internally provided with adapter connectors, one end of the cylinder is fixedly provided with a sealing end cover, and the other end of the cylinder is provided with a sealing guide sleeve;

the piston rod is slidably arranged in the sealing guide sleeve, one end of the piston rod, which extends into the cylinder barrel, is sleeved with a sealing piston, the sealing piston is slidably connected with the inner side wall of the cylinder barrel, and the other end of the piston rod is provided with a joint bolt;

the guide assembly is used for telescopic guiding of the piston rod and is installed in the sealing end cover and stretches into the cylinder barrel, the guide assembly comprises a guide rod, a plurality of arc grooves are evenly formed in the outer side wall of the guide rod, balls are filled in the arc grooves, a connecting disc is fixedly connected to one end of the guide rod through bolts, the connecting disc is fixedly connected with the sealing end cover through bolts, the other end of the guide rod is inserted into the guide groove formed in the piston rod, and a limiting disc used for limiting the balls to be separated from the arc grooves is installed.

Preferably, the end of the sealing end cover, which is far away from the cylinder barrel, is welded with a connector.

Preferably, the sealing guide sleeve is fixedly connected with the cylinder barrel through a bolt, a groove is formed in the connecting surface of the sealing guide sleeve and the cylinder barrel, an O-shaped ring is installed in the groove, a sealing groove is formed in the inner side wall, in contact with the piston rod, of the sealing guide sleeve, and a V-shaped ring is embedded in the sealing groove.

Preferably, the outer side wall of the guide rod is connected with the inner side wall of the guide groove in a sliding mode, the diameter of the arc groove formed in the guide rod is equal to that of the ball, and the ball is wrapped by more than half of the volume of the arc groove.

Preferably, the outer side wall of the ball is installed in the arc groove and is in sliding connection with the inner side wall of the guide groove.

Preferably, the sealing end cover is symmetrically welded with rectangular rods located on the outer side of the cylinder barrel, the rectangular rods are provided with limiting holes, limiting rods are inserted into the limiting holes in the two rectangular rods, the two limiting rods are fixedly connected with a connecting plate deviating from one ends of the rectangular rods, and the connecting plate is fixedly connected with the piston rod.

Compared with the prior art, the utility model provides a car back door vertical type air spring kerve hydraulic stem has following beneficial effect:

1. the utility model provides a vertical type air spring trombone slide hydraulic stem of car back door, through seting up the guide way at the piston rod, then install the direction subassembly in the cylinder, utilize the guide way of direction subassembly to insert the guide way and lead to the flexible of piston rod, thereby restrict its vibration skew, thereby make the piston rod can stabilize the flexible, reduce its skew wearing and tearing, make its sealing member use more permanent, thereby improve its life, slide between piston rod and the guide way and cooperate through the ball, further reduce the friction, it is convenient for it to carry out stable flexible;

2. through the cooperation that sets up rectangular rod, gag lever post and connecting plate and piston rod on sealed end cover, at the flexible in-process of piston rod, further fix the restriction to the piston rod, reduce the vibration skew of piston rod slip in-process for the piston rod is flexible more stable.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the vertical gas spring slot-drawing hydraulic rod for the back door of the vehicle provided by the present invention;

FIG. 2 is a schematic view of the guide assembly shown in FIG. 1 coupled to a piston rod;

FIG. 3 is a schematic view of the connection between the wire guide rod and the piston rod shown in FIG. 1;

fig. 4 is a partially enlarged view of a shown in fig. 1.

The reference numbers in the figures: 1. a cylinder barrel; 11. a crossover sub; 2. sealing the end cover; 21. a connector; 3. sealing the guide sleeve; 31. an O-shaped ring; 32. a V-shaped ring; 4. a piston rod; 401. a guide groove; 41. a joint bolt; 5. a sealing piston; 6. a guide assembly; 601. an arc groove; 61. a guide bar; 62. a ball bearing; 63. a connecting disc; 64. a limiting disc; 7. a rectangular bar; 8. a limiting rod; 9. a connecting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention provides a vertical gas spring slot-drawing hydraulic rod for a back door of an automobile, including:

the oil-gas cylinder comprises a cylinder barrel 1, wherein an oil-gas cavity is arranged in the cylinder barrel 1, gas holes communicated with the oil-gas cavity are formed in the side walls of two ends of the cylinder barrel 1, adapter joints 11 are arranged in the gas holes, a sealing end cover 2 is fixedly arranged at one end of the cylinder barrel 1, and a sealing guide sleeve 3 is arranged at the other end of the cylinder barrel 1;

the piston rod 4 is slidably arranged in the sealing guide sleeve 3, one end, extending into the cylinder barrel 1, of the piston rod 4 is sleeved with a sealing piston 5, the sealing piston 5 is slidably connected with the inner side wall of the cylinder barrel 1, and the other end of the piston rod 4 is provided with a joint bolt 41;

guide assembly 6, a guide assembly 6 for the flexible direction of piston rod 4 installs in end cover 2 and stretches into in cylinder 1, and guide assembly 6 includes guide bar 61, a plurality of circular arc grooves 601 have evenly been seted up to guide bar 61's lateral wall, all fill in a plurality of circular arc grooves 601 has ball 62, bolt fixedly connected with connection pad 63 is passed through to guide bar 61 one end, connection pad 63 passes through bolt fixed connection with end cover 2, the other end of guide bar 61 is inserted and is located the guide way 401 that piston rod 4 seted up, and install and be used for restricting ball 62 from the spacing dish 64 that circular arc groove 601 breaks away from.

Wherein, the lateral wall of guide bar 61 and the inside wall sliding connection of guide way 401, and the circular arc groove 601 diameter that guide bar 61 seted up equals the diameter of ball 62, and the circular arc groove 601 more than half all wraps up including with ball 62 volume.

Wherein, install ball 62 lateral wall and the sliding connection of guide way 401 in circular arc groove 601.

It should be noted that: during installation, a limiting disc 64 is installed at one end of a guide rod 61 of a guide assembly 6, a plurality of balls 62 are sequentially filled in a plurality of arc grooves 601, a connecting disc 63 is fixed at the other end of the guide rod 61, the connecting disc 63 is fixed in a sealing end cover 2 through bolts, the sealing end cover 2 is installed at one end of a cylinder barrel 1, a piston rod 4 penetrates through a sealing guide sleeve 3, a joint bolt 41 is installed at one end of the piston rod 4, a sealing piston 5 is fixed at the other end of the piston rod 4 through bolts, one end provided with the sealing piston 5 is inserted into the cylinder barrel 1, the sealing guide sleeve 3 is connected with the cylinder barrel 1 in a sealing mode, two conversion joints 11 are installed in air holes of the cylinder barrel 1, the conversion joints 11 are connected with external cylinder external control elements, the sealing end cover 2 is installed in an automobile trunk, and the joint bolt 41 is connected with a pull groove of a trunk door to complete integral installation.

During the use, pass through crossover sub 11 through the control element outside the jar and give leading-in high-pressure gas of oil gas cylinder of cylinder 1 or high pressure oil, thereby promote sealed piston 5 and remove in cylinder 1, thereby drive piston rod 4 and stretch out and draw back, when flexible, piston rod 4 slides on guide bar 61 in step, during the slip, join in marriage through the roll of ball 62, make piston rod 4 when flexible, it is more steady to slide, and can restrict the vibration of its piston rod 4, thereby make piston rod 4 can stably stretch out and draw back, reduce its skew wearing and tearing, make its sealing member use more permanent, thereby improve its life.

The method comprises the following steps: the change-over connection 11 is here selected according to the type of the out-of-cylinder control element, the change-over connection 11 being a gas quick-change connection if compressed gas is used to control the expansion and contraction of the gas spring, and the change-over connection 11 being a hydraulic oil quick-change connection if hydraulic oil is used to control the expansion and contraction.

In the embodiment of the present invention, please refer to fig. 1 and fig. 2, a connector 21 is welded at an end of the end cap 2 departing from the cylinder 1.

It should be noted that: hinge hole has been seted up to connector 21, and during the installation, connector 21 articulates in car trunk, utilizes connector 21 to fix end cover 2 in car trunk like this, and then when piston rod 4 is flexible, the air spring takes place to rotate based on the trunk to the back door is opened or is closed in the drive.

In the embodiment of the utility model, please refer to fig. 1 and fig. 4, sealed guide pin bushing 3 passes through bolt fixed connection with cylinder 1, and sealed guide pin bushing 3 all offers flutedly with the connection face of cylinder 1, installs O type circle 31 in the recess, and sealed guide pin bushing 3 has offered sealed slot with the inside wall of 4 contacts of piston rod, and the embedded V type circle 32 that is equipped with of sealed slot.

It should be noted that: when the sealing guide sleeve 3 is arranged on the cylinder barrel 1, the sealing is kept between the O-shaped ring 31 and the cylinder barrel 1, the sealing is kept between the V-shaped ring 32 and the piston rod 4, and the V-shaped sealing ring is adopted, so that compared with other lip-shaped sealing rings, the sealing guide sleeve is mainly characterized in that a plurality of sealing rings can be overlapped according to the use pressure, and the sealing performance is improved along with the increase of the number of the overlapped sealing rings; has stronger following capability to the eccentric load and the eccentric motion of the piston or the piston rod 4, and has good leakage-proof effect.

In the embodiment of the utility model, please refer to fig. 1 and 2, the outside symmetric welding that lies in cylinder 1 on end cover 2 has rectangular rod 7, and spacing hole has all been seted up to two rectangular rods 7, and spacing downthehole the all insertion of two rectangular rods 7 is equipped with gag lever post 8, and two gag lever posts 8 deviate from the common fixedly connected with connecting plate 9 of one end of rectangular rod 7, connecting plate 9 and piston rod 4 fixed connection.

It should be noted that: like this at piston rod 4 flexible in-process, gag lever post 8 slides in the spacing downthehole of rectangular rod 7 in step, further fixes the restriction to piston rod 4, reduces the vibration skew of piston rod 4 slip in-process for piston rod 4 is flexible more stable.

The utility model provides a theory of operation of car back door vertical type air spring pull groove hydraulic stem as follows:

during the use, lead-in high-pressure gas or high pressure oil are passed through crossover sub 11 for the oil gas cylinder of cylinder 1 through the control element outside the jar, thereby promote sealed piston 5 and remove in cylinder 1, thereby drive piston rod 4 and stretch out and draw back, when flexible, piston rod 4 slides on guide bar 61 in step, during the slip, join in marriage through the roll of ball 62, make piston rod 4 when flexible, it is more steady to slide, and can restrict the vibration of its piston rod 4, thereby make piston rod 4 can stabilize flexible, reduce its skew wearing and tearing, make its sealing member use more permanent, at the flexible in-process of piston rod 4, gag lever post 8 slides in the spacing downthehole of rectangular bar 7 in step, further fix restriction to piston rod 4, reduce the vibration skew of piston rod 4 slip in-process, make piston rod 4 flexible more stable, thereby improve its life.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides an automobile back door vertical type air spring drawing groove hydraulic stem, includes:

the oil-gas cylinder comprises a cylinder barrel (1), wherein an oil-gas cavity is arranged in the cylinder barrel (1), gas holes communicated with the oil-gas cavity are formed in the side walls of two ends of the cylinder barrel (1), adapter joints (11) are arranged in the gas holes, a sealing end cover (2) is fixedly arranged at one end of the cylinder barrel (1), and a sealing guide sleeve (3) is arranged at the other end of the cylinder barrel (1);

the piston rod (4) is slidably arranged in the sealing guide sleeve (3), one end, extending into the cylinder barrel (1), of the piston rod (4) is sleeved with a sealing piston (5), the sealing piston (5) is slidably connected with the inner side wall of the cylinder barrel (1), and the other end of the piston rod (4) is provided with a joint bolt (41);

it is characterized by also comprising:

guide assembly (6) for flexible direction of piston rod (4) guide assembly (6) are installed in end cover (2) and are stretched into in cylinder (1), and guide assembly (6) include guide bar (61), a plurality of arc groove (601) have evenly been seted up to the lateral wall of guide bar (61), and are a plurality of all filled ball (62) in arc groove (601), bolt fixedly connected with connection pad (63) are passed through to guide bar (61) one end, connection pad (63) pass through bolt fixed connection with end cover (2), and the other end of guide bar (61) is inserted and is located guide way (401) that piston rod (4) were seted up to install spacing dish (64) that are used for restricting ball (62) and break away from arc groove (601).

2. The upright gas spring broaching hydraulic rod for the back door of the automobile as claimed in claim 1, wherein the end of the end cap (2) away from the cylinder (1) is welded with a connector (21).

3. The vertical type gas spring slot-drawing hydraulic rod for the back door of the automobile as claimed in claim 1, wherein the sealing guide sleeve (3) is fixedly connected with the cylinder barrel (1) through a bolt, a groove is formed in the connecting surface of the sealing guide sleeve (3) and the cylinder barrel (1), an O-shaped ring (31) is installed in the groove, a sealing groove is formed in the inner side wall of the sealing guide sleeve (3) contacting with the piston rod (4), and a V-shaped ring (32) is embedded in the sealing groove.

4. The upright gas spring slot hydraulic rod of claim 1, wherein the outer sidewall of the guide rod (61) is slidably connected to the inner sidewall of the guide slot (401), the guide rod (61) has an arc slot (601) with a diameter equal to that of the ball (62), and the arc slot (601) encloses the ball (62) by more than half of its volume.

5. The upright gas spring slot hydraulic rod of claim 4, wherein the outer side wall of the ball (62) is slidably connected with the inner side wall of the guide groove (401) installed in the arc groove (601).

6. The vertical type gas spring slot-drawing hydraulic rod for the back door of the automobile as claimed in claim 1, wherein rectangular rods (7) are symmetrically welded on the sealing end cover (2) at the outer side of the cylinder barrel (1), two of the rectangular rods (7) are provided with limiting holes, limiting rods (8) are inserted into the limiting holes in the two rectangular rods (7), one ends of the two limiting rods (8) departing from the rectangular rods (7) are fixedly connected with a connecting plate (9) together, and the connecting plate (9) is fixedly connected with the piston rod (4).