CN210240419U - Novel guide structure for seat damper - Google Patents

Abstract

The utility model discloses a novel guide structure for seat damper, including the direction oil blanket of direction base and cooperation direction base, the direction base is used for the direction and the support of attenuator piston rod, the direction base includes the base body, connect the base inner circle on the base body, circle and base outer lane and be located the inboard base guiding hole of base inner circle in the base, the bottom of base inner circle is equipped with non return gasket and spacing lid, interference fit between non return gasket and the attenuator piston rod, the opening of circle is used for cooperating spacing lid down in the base, distance between spacing lid and the base inner circle is greater than the thickness of non return gasket, be equipped with the first oil guide hole that leads of intercommunication base body inboard and attenuator outer cylinder body on the base body, be equipped with the second oil guide hole that feeds through the inboard and the attenuator inner cylinder body of circle in the base on the base. The utility model discloses ensure the piston rod and shift up the sealed effect between in-process and the direction base, ensure the stability and the reliability of piston rod motion.

Description

Novel guide structure for seat damper

Technical Field

The utility model relates to a spare part of attenuator especially relates to a novel guide structure for seat attenuator.

Background

Because the inner cylinder body and the piston rod of the damper both have certain lengths, in order to ensure the stability and reliability of the action of pushing the piston by the piston rod in the inner cylinder body, a special guide structure is often needed to guide and support the piston rod; because the bottom of the damper usually adopts the structure of a one-way valve, in order to ensure that the piston rod can move downwards smoothly, a part of oil (the volume of the part of oil corresponds to the volume of the part of the piston rod moving downwards) on the lower side of the guide base needs to flow to the upper side of the guide base and enter the outer cylinder body through the diversion of the guide base, a certain gap is usually reserved between the inner side of the guide base and the piston rod, and the existence of the gap ensures that the oil can also flow between the outer cylinder body and the inner cylinder body through the guide base in the upward movement process of the piston rod, so that the motion stability of the piston rod cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the defect that exists among the above-mentioned prior art and not enough, an adopt and carry out axial seal between bottom and the attenuator piston rod of direction base with attenuator piston rod interference fit's non return gasket, ensure the piston rod and move up the sealed effect between in-process and the direction base, prevent that the piston rod from shifting up the in-process, hydraulic oil between cylinder body and the outer cylinder body of attenuator circulates each other in the attenuator, thereby guarantee the stability and the reliability of piston rod motion, and simple structure, the convenient novel guide structure who is used for the seat attenuator of preparation.

The technical scheme of the utility model: a novel guide structure for a seat damper comprises a guide base fixed between an outer damper cylinder body and an inner damper cylinder body and a guide oil seal matched with the guide base, the guide base is used for guiding and supporting the piston rod of the damper and comprises a base body, a base inner ring, a base middle ring, a base outer ring and a base guide hole, wherein the base inner ring, the base middle ring and the base outer ring are connected to the base body, the base guide hole is positioned on the inner side of the base inner ring, the bottom of the base inner ring is provided with a non-return sealing sheet and a limiting cover matched with the non-return sealing sheet, the non-return sealing sheet is in interference fit with the damper piston rod, the opening of the middle ring of the base faces downwards and is used for being matched with a limiting cover, the distance between the limiting cover and the inner ring of the base is larger than the thickness of the non-return sealing piece, the base body is provided with a first oil guide hole which communicates the inner side of the base body with the damper outer cylinder body, and a second oil guide hole for communicating the inner side of the middle ring of the base and the inner cylinder body of the damper is formed in the middle ring of the base.

The utility model discloses a carry out axial seal between bottom and the attenuator piston rod of direction base with attenuator piston rod interference fit's non return gasket, ensure the piston rod and move up the sealed effect between in-process and the direction base, prevent that the piston rod from shifting up the in-process, hydraulic oil between damper inner cylinder body and the outer cylinder body of attenuator circulates each other to guarantee the stability and the reliability of piston rod motion, and simple structure, the preparation is convenient.

Preferably, the direction oil blanket includes the oil blanket body, connects oil blanket skeleton, oil blanket inner circle and the oil blanket outer lane on the oil blanket body and is located the inboard oil blanket guiding hole of oil blanket inner circle, the opening of base outer lane is used for the downside of cooperation oil blanket inner circle up, the opening of oil blanket outer lane is used for cooperating the base outer lane down.

The structure enables the assembly of the guide oil seal and the guide base to be more compact and reliable, and further ensures the sealing effect.

Preferably, the outside of base outer lane is equipped with the annular breach of cooperation oil blanket outer lane, the bottom surface of oil blanket outer lane and the laminating of the bottom surface of annular breach, the biggest external diameter of base outer lane and the biggest external diameter phase-match of oil blanket outer lane, the medial surface of oil blanket outer lane and the medial surface laminating of annular breach.

The structure enables the matching between the base outer ring and the oil seal outer ring to be more close and reliable, and enables the appearance of the guide base and the guide oil seal after assembly to be more smooth and beautiful.

Preferably, the oil seal framework is embedded between the oil seal body and the oil seal inner ring, the oil seal framework is matched with the top of the damper outer cylinder body to form a damper top cover, a framework coating ring matched with the oil seal framework is arranged on the upper side of the oil seal inner ring, and the framework coating ring is matched with the top of the damper outer cylinder body to coat the oil seal framework.

The structure can save a metal plate used as a top cover on the existing damper, further simplify the structure and ensure firm and reliable structure of the oil seal framework.

Preferably, the lower side of the inner ring of the oil seal is tightly matched with the damper piston rod through a spring, and the inner ring of the oil seal is provided with a spring mounting groove and a spring limiting ring which are matched with the spring.

The structure ensures that the matching between the inner ring of the oil seal and the piston rod of the damper is more compact and reliable, and the sealing performance is further improved.

The utility model discloses a carry out axial seal between bottom and the attenuator piston rod of guiding inner circle with attenuator piston rod interference fit's non return gasket, ensure the sealed effect between direction base and the piston rod, and need not at the inner wall fluting of direction inner circle, the simple structure of direction base, the preparation is convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the damper assembly of the present invention;

in the figure, 1, a guide base, 2, a guide oil seal, 3, a damper outer cylinder body, 4, a damper inner cylinder body, 5, a damper piston rod, 6, a base body, 7, a base inner ring, 8, a base middle ring, 9, a base outer ring, 10, an annular gap, 11, an oil seal body, 12, an oil seal framework, 13, an oil seal inner ring, 14, an oil seal outer ring, 15, a check sealing sheet, 16, a limiting cover, 17, a framework wrapping ring, 18, a spring, 19, a spring mounting groove, 20, a mounting limiting ring, 21, a first oil guide hole, 22 and a second oil guide hole are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 and 2, a novel guide structure for a seat damper comprises a guide base 1 fixed between a damper outer cylinder 3 and a damper inner cylinder 4 and a guide oil seal 2 matched with the guide base 1, wherein the guide base 1 is used for guiding and supporting a damper piston rod 5. The guide base 1 comprises a base body 6, a base inner ring 7 connected to the base body 6, a base middle ring 8, a base outer ring 9 and a base guide hole located on the inner side of the base inner ring 7, a non-return sealing sheet 15 and a limiting cover 16 matched with the non-return sealing sheet 15 are arranged at the bottom of the base inner ring 7, the non-return sealing sheet 15 is in interference fit with the damper piston rod 5, an opening of the base middle ring 8 faces downwards and is used for being matched with the limiting cover 16, and the distance between the limiting cover 16 and the base inner ring 7 is larger than the thickness of the non-return sealing sheet 15. The base body 6 is provided with a first oil guide hole 21 communicating the inner side of the base body 6 with the damper outer cylinder 3, and the base middle ring 8 is provided with a second oil guide hole 22 communicating the inner side of the base middle ring 8 with the damper inner cylinder 4. The guide oil seal 2 comprises an oil seal body 11, an oil seal framework 12 connected to the oil seal body 11, an oil seal inner ring 13, an oil seal outer ring 14 and an oil seal guide hole located on the inner side of the oil seal inner ring 13, wherein the opening of the base outer ring 9 faces upwards to be used for being matched with the lower side of the oil seal inner ring 13, and the opening of the oil seal outer ring 14 faces downwards to be used for being matched with the base outer ring 9. The outer side of the base outer ring 9 is provided with an annular gap 10 matched with the oil seal outer ring 14, the bottom surface of the oil seal outer ring 14 is attached to the bottom surface of the annular gap 10, the maximum outer diameter of the base outer ring 9 is matched with the maximum outer diameter of the oil seal outer ring 14, and the inner side surface of the oil seal outer ring 14 is attached to the inner side surface of the annular gap 10. The oil seal framework 12 is embedded between the oil seal body 11 and the oil seal inner ring 13, the oil seal framework 12 is matched with the top of the damper outer cylinder body 3 to form a damper top cover, the framework cladding ring 17 matched with the oil seal framework 12 is arranged on the upper side of the oil seal inner ring 13, and the framework cladding ring 17 is matched with the top of the damper outer cylinder body 3 to clad the oil seal framework 12. The lower side of the oil seal inner ring 13 is tightly matched with the damper piston rod 5 through a spring 18, and a spring mounting groove 19 and a spring limiting ring 20 which are matched with the spring 18 are arranged on the oil seal inner ring 13.

When the utility model is used, the guide base and the guide oil seal are fixed between the top of the damper outer cylinder body and the top of the damper inner cylinder body, the damper piston rod passes through the oil seal guide hole of the guide oil seal and the base guide hole of the guide base to slide up and down in the damper inner cylinder body, because the non-return sealing sheet and the damper piston rod are in interference fit, when the damper piston rod slides downwards to push the piston, the non-return sealing sheet moves downwards under the driving of the damper piston rod to prop against the limit cover, a certain oil guide gap is reserved between the non-return sealing piece and the guide base, so that hydraulic oil overflowing due to the entrance of the piston rod in the damper inner cylinder body in the downward moving process of the piston rod can flow into the outer cylinder body through the second flow guide hole, the oil guide gap, the gap between the damper piston rod and the guide base and the first oil guide hole, and the balance of the hydraulic oil is ensured; when the damper piston rod slides upwards to drive the piston to move upwards, the non-return sealing piece moves upwards under the drive of the damper piston rod and is tightly attached to the bottom of the guide base, so that the guide base and the damper piston rod are thoroughly sealed, the sealing effect in the process is ensured, the backflow of hydraulic oil is thoroughly stopped, and the stability and the reliability of the movement of the piston rod are guaranteed.

Claims (5)

1. The utility model provides a novel guide structure for seat attenuator, is including fixing the direction oil blanket of direction base and cooperation direction base between outer cylinder body of attenuator and the attenuator inner cylinder body, the direction base is used for the direction and the support of attenuator piston rod, its characterized in that: the direction base includes base body, connects base inner circle, base centre circle and the base outer lane on the base body and is located the inboard base guiding hole of base inner circle, the bottom of base inner circle is equipped with the spacing lid of a non return gasket and cooperation non return gasket, interference fit between non return gasket and the attenuator piston rod, the opening of circle is used for cooperating spacing lid down in the base, distance between spacing lid and the base inner circle is greater than the thickness of non return gasket, be equipped with the first oil guide hole that leads of the inboard and attenuator outer cylinder body of intercommunication base body on the base body, be equipped with the second oil guide hole of the inboard and the attenuator inner cylinder body of intercommunication base centre circle on the base centre circle.

2. The novel guide structure for a seat damper as claimed in claim 1, wherein: the direction oil blanket includes the oil blanket body, connects oil blanket skeleton, oil blanket inner circle and the oil blanket outer lane on the oil blanket body and is located the inboard oil blanket guiding hole of oil blanket inner circle, the opening of base outer lane is used for the downside of cooperation oil blanket inner circle up, the opening of oil blanket outer lane is used for cooperating the base outer lane down.

3. The novel guide structure for a seat damper as claimed in claim 2, wherein: the outer side of the base outer ring is provided with an annular notch matched with the oil seal outer ring, the bottom surface of the oil seal outer ring is attached to the bottom surface of the annular notch, the maximum outer diameter of the base outer ring is matched with the maximum outer diameter of the oil seal outer ring, and the inner side surface of the oil seal outer ring is attached to the inner side surface of the annular notch.

4. The novel guide structure for a seat damper as claimed in claim 2, wherein: the oil seal structure is characterized in that the oil seal framework is embedded between the oil seal body and the oil seal inner ring, the oil seal framework is matched with the top of the damper outer cylinder body to form a damper top cover, a framework cladding ring matched with the oil seal framework is arranged on the upper side of the oil seal inner ring, and the framework cladding ring is matched with the top of the damper outer cylinder body to clad the oil seal framework.

5. The novel guide structure for a seat damper as claimed in claim 2, wherein: the lower side of the inner ring of the oil seal is tightly matched with the piston rod of the damper through a spring, and the inner ring of the oil seal is provided with a spring mounting groove and a spring limiting ring which are matched with the spring.

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