CN216665340U

CN216665340U - Hydraulic pressure hinge of rotation type

Info

Publication number: CN216665340U
Application number: CN202121471350.8U
Authority: CN
Inventors: 张飞飞; 赖明亮; 张静
Original assignee: Ningbo Pentagon Damper Corp
Current assignee: Ningbo Pentagon Damper Corp
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-06-03
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a hydraulic pressure hinge of rotation type, includes door body connecting portion, door frame connecting portion, fixes hydraulic assembly on door body connecting portion, is used for connecting this hydraulic assembly and the link assembly of this door frame connecting portion, and this hydraulic assembly includes the hydraulic oil in cylinder body, piston and the cylinder body, this hydraulic assembly still include reset spring, by the rotatory pivot of piston drive, this pivot be equipped with piston complex transmission portion and with link assembly complex drive division.

Description

Hydraulic pressure hinge of rotation type

Technical Field

The utility model relates to the field of hinges, in particular to a rotary hydraulic hinge.

Background

The hinge for the traditional door is a folding hinge, and the main hinge and the auxiliary hinge are fixedly installed on a door frame and a door plate after being hinged, so that the door cannot be buffered, and the speed of closing the door cannot be controlled. When the door is closed, if large external force exists, the door plate and the door frame collide violently to generate large sound, and the violent collision easily causes overlarge interaction force between the door plate and the door frame, easily causes damage to the door plate or the door frame, influences the service life of the door frame and the door plate, and has certain potential safety hazard. In order to avoid various defects of the folding hinge, the hinge for the door, which has a buffering effect on the closing of the door, is gradually developed on the market.

Referring to fig. 1-3, CN211500247U discloses a rotary hydraulic hinge, which includes a hinge 1, and a fixing seat 2 and a door body connecting portion respectively fixed on two sides of the hinge 1, wherein a casing 14 is sleeved outside a hydraulic rod 4, the casing 14 is provided with a sliding slot 15 corresponding to a sliding column 13, the sliding column 13 slides along the sliding slot 15, a knob is installed at an end of the hydraulic rod 4, and the knob is adjusted to adjust an oil return speed of the hydraulic rod 4, so as to adjust a closing speed of the door body through a hydraulic pressure change; the guide sliding block 3 is provided with a through hole, the end part of the hydraulic rod 4 is arranged in the through hole to keep one end of the hydraulic rod 4 fixed, the hinge 1 is symmetrically provided with through grooves 18, and the bent rod 6 penetrates through the through grooves 18 and then is connected with the fixing seat 2 on one side of the hinge 1.

In the prior art, the sliding groove needs to be arranged to ensure the motion direction of the piston rod, along with abrasion of the sliding groove, the piston rod is subjected to unilateral stress to easily cause abrasion of a sealing part of the piston and a cylinder body or cause sealing failure due to extrusion deformation, meanwhile, the sliding groove restrains the motion direction of the piston rod, when the sliding groove deforms, the friction force between the sliding groove and the piston rod is not uniform in the door opening and closing process, and the friction force can influence the rotation hand feeling in the door rotating process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rotary hydraulic hinge.

In order to achieve the above purpose, the utility model provides a rotary hydraulic hinge, which comprises a door body connecting part, a door frame connecting part, a hydraulic assembly fixed on the door body connecting part, and a connecting rod assembly used for connecting the hydraulic assembly and the door frame connecting part, wherein the hydraulic assembly comprises a cylinder body, a piston and hydraulic oil in the cylinder body, the hydraulic assembly further comprises a return spring and a rotating shaft driven to rotate by the piston, and the rotating shaft is provided with a transmission part matched with the piston and a driving part matched with the connecting rod assembly.

In one embodiment of the utility model, the transmission part comprises a projection extending away from the center of the rotating shaft.

In an embodiment of the present invention, the protrusion is provided with an opening position plane and/or a closing position plane, the door body connecting portion is in an opening state when the opening position plane faces the piston, and the door body connecting portion is in a closing state when the closing position plane faces the piston.

In one embodiment of the present invention, the transmission part further includes a transmission rod having two ends respectively hinged to the piston and the protrusion.

In one embodiment of the present invention, the transmission portion includes a first tooth disposed on the rotating shaft and a first rack engaged with the first tooth, the first rack is connected and fixed or hinged to the piston, and a first restriction portion for keeping the first rack engaged with the first tooth is fixed to the piston, the cylinder or the first rack.

In one embodiment of the utility model, the drive portion comprises a swing arm cooperating with the linkage assembly.

In one embodiment of the utility model, the swing arm is articulated with the connecting rod assembly.

In one embodiment of the present invention, the driving portion includes a second tooth and a second rack engaged with the second tooth, the second rack being engaged with the link assembly, and the second rack or the cylinder body is fixed with a second restraint portion for holding the second rack engaged with the second tooth.

In one embodiment of the utility model, the shaft is mechanically sealed to the cylinder.

In one embodiment of the utility model, a hydraulic oil communication gap is formed between the piston and the cylinder.

In the utility model, the hydraulic assembly also comprises a return spring and a rotating shaft driven by the piston to rotate, the rotating shaft is provided with a transmission part matched with the piston and a driving part matched with the connecting rod assembly, the piston drives the rotating shaft to rotate through the transmission part, the rotating shaft is matched with the connecting rod assembly through the driving part, and the friction force between the rotating shaft and the cylinder body is rotating friction force in the working process of the rotating shaft.

In addition, the rotating shaft is in running fit with the cylinder body, the friction force between the rotating shaft and the cylinder body is small and stable, and the sealing service life between the rotating shaft and the cylinder body is long.

Drawings

Fig. 1 is a perspective view of a conventional hydraulic hinge.

Fig. 2 is a perspective view of the internal structure of the hydraulic hinge of fig. 1.

Fig. 3 is a perspective view of a runner of the hydraulic hinge of fig. 1.

Fig. 4 is a schematic structural view of a rotary hydraulic hinge according to a first embodiment of the present invention.

Fig. 5 is an exploded view of the rotary hydraulic hinge of fig. 4.

Fig. 6 is a cross-sectional view of the rotary hydraulic hinge of fig. 4.

Fig. 7 is a schematic structural view of a rotary hydraulic hinge according to a second embodiment of the present invention.

Fig. 8 is a sectional view of the rotary hydraulic hinge of fig. 7.

Fig. 9 is a sectional view of a rotary hydraulic hinge according to a third embodiment of the present invention.

Fig. 10 is a sectional view of a rotary hydraulic hinge according to a fourth embodiment of the present invention.

Fig. 11 is a sectional view of a rotary hydraulic hinge according to a fifth embodiment of the present invention.

Fig. 12 is a schematic structural view of a rotary hydraulic hinge according to a sixth embodiment of the present invention.

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.

Referring to fig. 4, 5 and 6, the rotary hydraulic hinge according to the first embodiment of the present invention includes a door body connecting portion 11, a door frame connecting portion 12, a hydraulic assembly fixed to the door body connecting portion 11, and a connecting rod assembly for connecting the hydraulic assembly and the door frame connecting portion 12, wherein the hydraulic assembly includes a cylinder body 21, a piston 23, and hydraulic oil in the cylinder body 21, the hydraulic assembly further includes a return spring 4, a rotating shaft 5 driven by the piston 23 to rotate, and the rotating shaft 5 is provided with a transmission portion engaged with the piston 23 and a driving portion engaged with the connecting rod assembly. A hydraulic oil flow gap is formed between the piston 23 and the cylinder 21. The door body connecting portion 11 and the door frame connecting portion 12 are pivotally connected.

The cylinder 21 has a first chamber for accommodating the return spring 4 and the piston 23 and a second chamber for accommodating the rotary shaft 5, which are perpendicular to each other. The two

ends

21a and 21b of the first chamber are respectively provided with a first sealing cover 211 and a second sealing cover 212, and the rotating shaft 5 is mechanically sealed with the second sealing cover 212 of the cylinder 21.

The transmission part comprises a projection 71 extending away from the centre of the shaft 5. The bulge 71 is provided with an opening position plane 71a and/or a closing position plane 71b, when the opening position plane 71a faces the piston 23, the door body connecting part 11 is in an opening state, when the closing position plane 71b faces the piston 23, the door body connecting part 11 is in a closing state, the driving part comprises a swing arm 81, and the swing arm 81 is matched with the connecting rod assembly. The connecting rod assembly comprises a first connecting rod 31 hinged with the door body connecting part 11 and a second connecting rod 32, two ends of which are respectively hinged with the first connecting rod 31 and the swing arm 81. The swing arm 81 is hinged to the linkage assembly. The first link 31 is pivotally connected to the fixed base of the door body coupling portion.

The rotating shaft 5 is located at one end of the cylinder body 21 opposite to the door body connecting part 11, and the return spring is located between the door body connecting part 11 and the piston 23.

In the utility model, the hydraulic assembly further comprises a return spring 4 and a rotating shaft 5 driven by the piston 23 to rotate, the rotating shaft 5 is provided with a transmission part matched with the piston 23 and a driving part matched with the connecting rod assembly, the piston 23 drives the rotating shaft 5 to rotate through the transmission part, the rotating shaft 5 is matched with the connecting rod assembly through the driving part, and the friction force between the rotating shaft 5 and the cylinder body 21 is rotation friction force in the working process of the rotating shaft 5.

In addition, the rotating shaft 5 is in running fit with the cylinder 21, the friction force between the rotating shaft 5 and the cylinder 21 is small and stable, and the sealing life between the rotating shaft 5 and the cylinder 21 is long.

Referring to fig. 7 and 8, compared to the first embodiment, in the second embodiment, the connecting rod assembly includes a third connecting rod 33 whose two ends are respectively hinged to the door frame connecting portion 12 and the swing arm 81. The swing arm 81 is hinged to the third link 33. The rotating shaft 5 is located at one end of the cylinder body 21 close to the door body connecting portion 11, and the piston 23 is located between the return spring 4 and the door body connecting portion 11.

Referring to fig. 9, compared to the first embodiment, in the third embodiment, the transmission part further includes a transmission rod 72 having two ends respectively connected to the piston 23 and the piston rod 24 and the protrusion 71. The cylinder body 21 is fixedly connected with a rotating shaft seat 21 'for mounting the rotating shaft 5, and the piston rod 24 penetrates through one first sealing cover 211'.

Referring to fig. 10, compared to the third embodiment, in the fourth embodiment, the connecting rod assembly includes a third connecting rod 33 whose two ends are respectively hinged to the door frame connecting portion 12 and the swing arm 81. The swing arm 81 is hinged to the third link 33. The rotating shaft 5 is located at one end of the cylinder body 21 close to the door body connecting portion 11, and the piston 23 is located between the return spring 4 and the door body connecting portion 11.

Referring to fig. 11, compared to the first embodiment, in the fifth embodiment, the transmission portion includes a first tooth 73 disposed on the rotation shaft and a first rack 74 engaged with the first tooth 73, the first rack 74 is connected to or hinged with the piston 23, and a first constraining portion 75 for keeping the first rack 74 engaged with the first tooth 73 is fixed on the first rack 74. In other embodiments, the piston 23 or the cylinder 21 is fixed with a first restraint portion 75 for keeping the first rack 74 engaged with the first teeth 73.

Referring to fig. 12, compared to the first embodiment, in the sixth embodiment, the driving portion includes a second tooth 82 and a second rack 83 engaged with the second tooth 82, the second rack 83 is engaged with the link assembly, and a second constraining portion 84 for keeping the second rack 83 engaged with the second tooth 82 is fixed on the second rack 83. In other embodiments, the cylinder body 21 is fixed with a second restraint portion 84 for keeping the second rack 83 engaged with the second tooth 82

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic pressure hinge of rotation type, includes door body connecting portion, door frame connecting portion, fixes hydraulic assembly on door body connecting portion, is used for connecting this hydraulic assembly and the link assembly of this door frame connecting portion, and this hydraulic assembly includes the hydraulic oil in cylinder body, piston and the cylinder body, its characterized in that, this hydraulic assembly still include reset spring, by the rotatory pivot of piston drive, this pivot be equipped with piston complex transmission portion and with link assembly complex drive division.

2. The rotary hydraulic hinge according to claim 1, wherein said transmission portion comprises a projection extending away from the center of said rotation shaft.

3. The rotary hydraulic hinge according to claim 2, wherein the protrusion has an open door position plane facing the piston, the door body connecting portion is in a door open state, and/or a closed door position plane facing the piston, the door body connecting portion is in a door closed state.

4. A rotary hydraulic hinge according to claim 2, characterized in that: the transmission part also comprises a transmission rod, two ends of the transmission rod are respectively hinged with the piston and the protrusion.

5. A rotary hydraulic hinge according to claim 1, characterized in that: the transmission part comprises first teeth arranged on the rotating shaft and a first rack meshed with the first teeth, the first rack is fixedly connected or hinged with the piston, and a first constraint part used for keeping the first rack meshed with the first teeth is fixed on the piston, the cylinder body or the first rack.

6. A rotary hydraulic hinge according to claim 1, characterized in that: the driving part comprises a swing arm which is matched with the connecting rod assembly.

7. A rotary hydraulic hinge according to claim 6, characterized in that: the swing arm is hinged with the connecting rod assembly.

8. A rotary hydraulic hinge according to claim 1, characterized in that: the driving part comprises a second tooth and a second rack meshed with the second tooth, the second rack is matched with the connecting rod assembly, and a second restraining part used for keeping the second rack meshed with the second tooth is fixed on the second rack or the cylinder body.

9. A rotary hydraulic hinge according to claim 1, characterized in that: the rotating shaft and the cylinder body are mechanically sealed.

10. A rotary hydraulic hinge according to claim 9, characterized in that: and a hydraulic oil circulation gap is formed between the piston and the cylinder body.