DE202022100493U1 - A buffer hinge - Google Patents

Abstract

A buffer hinge comprising a first hinge (1) and a second hinge (2), the first hinge (1) being provided with a first sleeve (100), the second hinge (2) being provided with a second sleeve (200) characterized in that it also comprises a rotary buffer device, the rotary buffer device comprising a shaft core (3), a shaft sleeve (4) and a gas oil damper (5), the shaft core (3) being connected to the first sleeve (100). , the shaft sleeve (4) being connected to the second sleeve (200), the shaft sleeve (4) driving the shaft core (3) to move up and down when the shaft sleeve (4) rotates, the gas oil damper (5 ) is connected to the shaft core (3).

Description

technical field

The utility model relates to the technical field of hinges, in particular to a buffer hinge.

background technique

At present, the ordinary hinge is widely used as the hinge of building doors and windows. Conventional folding hinges are used, which only have the function of a hinge. In the door closing operation, the door closing cannot be realized by the inertia of the door itself. The user usually has to press hard on one side of the door to move it towards the door frame. This door closing method is easy to generate excessive force, resulting in excessive collision noise between the door and the door frame or a strong impact between the door and the door frame, which will shorten the life of the door. To avoid collision, people use hydraulic buffer hinge. However, the hydraulic buffer hinge has a large volume and is prone to leakage during use, reducing service life.

Content of the utility model

The utility model aims to provide a buffer hinge that has solved the problems raised in the above background art.

To achieve the above purpose, the utility model provides the following technical solution: A buffer hinge comprising a first hinge and a second hinge, the first hinge being provided with a first sleeve, the second hinge being provided with a second sleeve , wherein it also comprises a rotary buffer device, wherein the rotary buffer device comprises a shaft core, a shaft sleeve and a gas oil damper, the shaft core being connected to the first sleeve, the shaft sleeve being connected to the second sleeve, the shaft sleeve connecting the shaft core to a and drives downward movement as the shaft sleeve rotates, with the gas oil damper connected to the shaft core.

Preferably, the gas oil damper comprises a housing, a piston and a piston rod, a piston being disposed in the housing, the piston being within the housing, a sealing ring being encased on the outer wall of the piston, the piston being in sealing contact via a sealing ring standing with the housing, the piston dividing the interior of the housing into an air chamber and an oil chamber, the end of the inner wall of the air chamber is provided with a guide sleeve and a sealing ring, one end of the piston rod is installed vertically on the piston, the other end of the piston rod passes through the guide sleeve, the sealing ring and the housing in succession.

Preferably, the outer peripheral surface of the shaft core is provided with a spiral groove, a pin shaft is inserted laterally at the end of the piston rod, both ends of the pin shaft are covered with wear-resistant sleeves, the wear-resistant sleeve is slidably fitted to the spiral groove, the outer surface of the shaft sleeve with a transversely penetrating guide groove, the wear-resistant sleeve being slidably fitted to the guide groove.

Preferably, an adjustment mechanism is disposed at the end of the second sleeve, the adjustment mechanism including an end cover and an adjustment screw, the adjustment screw being threaded to the end cover, one end of the adjustment screw being in contact with the gas oil damper.

Preferably, the wall surfaces of the first sleeve and the second sleeve are screwed together by threads with fastening screws, the first sleeve being firmly connected to the shaft core via a fastening screw, the second sleeve being firmly connected to the shaft sleeve via a fastening screw.

A sliding bearing is preferably arranged between the first sleeve and the second sleeve.

Preferably, the sealing ring has a circular platform shape, with an end of the sealing ring with a larger face being in sealing contact with the housing and an end of the sealing ring with a smaller face being in contact with the guide sleeve, with a groove being arranged on the face of the sealing ring facing the piston is.

Preferably, a compression spring is disposed in the oil chamber, one end of the compression spring being in contact with the inner end of the housing, the other end of the compression spring being in contact with the piston.

The utility model has the advantageous effect over the prior art that the shaft core, the shaft sleeve and the gas oil damper are installed in the sleeve in order to have a self-contained Form ended rotary buffer device to replace the conventional hydraulic buffer hinge. The utility model has the advantages of simpler structure and more convenient assembly, effectively reducing the production cost of the buffer hinge and improving operational reliability.

character list

• 1 is the main view of the present utility model.
• 2 Fig. 12 is a schematic cross-sectional view of the present utility model.
• 3 is the exploded diagram of the present utility model.
• 4 is the exploded diagram of the gas oil damper in the present utility model.
• 5 Fig. 12 is a schematic cross-sectional view of the gas oil damper in the present utility model.
• 6 Fig. 14 is the main view of another form of hinge of the present utility model.

Reference List

1

First hinge

100

First sleeve

2

Second hinge

200

Second sleeve

3

wave core

30

spiral groove

4

shaft sleeve

40

guide groove

5

gas oil damper

501

air chamber

502

oil chamber

51

housing

52

Pistons

53

piston rod

54

sealing ring

55

guide sleeve

56

sealing ring

57

compression spring

6

pin shaft

60

wear-resistant sleeve

7

end cover

8th

adjustment screw

9

mounting screw

Specific Embodiments

Next, the technical solution in the embodiments of the utility model will be described clearly and fully in combination with the attached figures in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all embodiments. Starting from the embodiments of the utility model, all other embodiments obtained by ordinary technicians without creative work belong to the scope of the present utility model.

A buffer hinge, as in 1 and 6 shown comprises a first hinge 1 and a second hinge 2, the first hinge 1 being provided with a first sleeve 100, the second hinge 2 being provided with a second sleeve 200, it also comprising a rotary buffer device, the rotary buffer device having a shaft core 3, a shaft sleeve 4 and a gas oil damper 5, the shaft core 3 being connected to the first sleeve 100, the shaft sleeve 4 being connected to the second sleeve 200, the shaft sleeve 4 driving the shaft core 3 to move up and down , when the shaft sleeve 4 rotates, with the gas oil damper 5 connected to the shaft core 3. The shaft core 3, shaft sleeve 4 and gas oil damper 5 are installed in the sleeve to form an independent rotary buffer device to replace the conventional hydraulic buffer hinge. The utility model has the advantages of simpler structure and more convenient assembly, effectively reducing the production cost of the buffer hinge and improving operational reliability.

As a preferred embodiment of the utility model, the gas oil damper 5 comprises a housing 51, a piston 52 and a piston rod 53, with a piston 52 being arranged in the housing 51, with the piston 52 being located inside the housing 51, with a sealing ring 54 on the outer wall of the Piston 52 is encased, the piston 52 being in sealing contact with the housing 51 via a sealing ring 54, the piston 52 dividing the interior of the housing 51 into an air chamber 501 and an oil chamber 502, the end of the inner wall of the air chamber 501 having a guide sleeve 55 and a sealing ring 56, one end of the piston rod 53 is installed vertically on the piston 52, the other end of the piston rod 53 is sequentially fitted through the guide sleeve 55, the sealing ring 56 and the Housing 51 runs. The interior of the housing 51 is divided into an air chamber 501 and an oil chamber 502 by the piston 52 . A sealing ring 56 is arranged at the end of the inner wall of the air chamber 501 . When the piston 52 extends, the seal ring 56 is compressed and the seal ring 56 fits more closely to the wall of the housing 51, which can effectively prevent the gas from being pushed out of the housing 51, avoid pressure loss and improve the working efficiency of the gas oil damper 5 can be.

As a preferred embodiment of the utility model, the outer peripheral surface of the shaft core 3 is provided with a spiral groove 30, a pin shaft 6 is inserted laterally at the end of the piston rod 53, both ends of the pin shaft 6 are covered with wear-resistant sleeves 60, the wear-resistant sleeve 60 is slidably attached the spiral groove 30 is fitted, the outer surface of the shaft sleeve 4 being provided with a transversely penetrating guide groove 40, the wear-resistant sleeve 60 being slidably fitted to the guide groove 40.

As a preferred embodiment of the utility model, an adjustment mechanism is arranged at the end of the second sleeve 200, the adjustment mechanism comprising an end cover 7 and an adjustment screw 8, the adjustment screw 8 being screwed to the end cover 7 by threads, with one end of the adjustment screw 8 in contact with the gas oil damper 5. The damping force of the gas oil damper can be adjusted by turning the adjusting screw 8.

As a preferred embodiment of the utility model, the wall surfaces of the first sleeve 100 and the second sleeve 200 are screwed together by threads with fastening screws 9, the first sleeve 100 being firmly connected to the shaft core 3 via a fastening screw 9, the second sleeve 200 being connected to the shaft sleeve 4 is firmly connected via a fastening screw 9.

As a preferred embodiment of the utility model, a plain bearing 300 is arranged between the first sleeve 100 and the second sleeve 200 . The plain bearing 300 ensures smooth sliding of the first sleeve 100 and the second sleeve 200 .

As a preferred embodiment of the utility model, the sealing ring 56 has a circular platform shape, with an end of the sealing ring 56 with a larger face being in sealing contact with the housing 51 and an end of the sealing ring 56 with a smaller face being in contact with the guide sleeve 55, with a groove is arranged on the end face of the sealing ring 56 facing the piston 52 .

As a preferred embodiment of the utility model, a compression spring 57 is disposed in the oil chamber 502 with one end of the compression spring 57 being in contact with the inner end of the housing 51 and the other end of the compression spring 57 being in contact with the piston 52 . Due to the reversing force of the spring, the piston 52 has some elasticity and resilience, and the damping ability is improved.

The operation of the present utility model is as follows: The first hinge 1 and the second hinge 2 are connected to the door frame and the door body, respectively. When the door is opened, the shaft core 3 and the shaft sleeve 4 rotate relative to one another. When the shaft core 3 rotates, it performs a linear forward movement on the shaft sleeve 4 via the cross pin. The gas oil damper is compressed by the force of the shaft core 3. The compressibility of the gas oil damper is used to absorb and release energy and dampen movement while storing energy. When the door is closed, the gas oil damper releases its energy and pushes the pin shaft 6 to slide on the spiral groove 30 of the shaft core 3 to rotate the shaft core 3. The shaft core 3 performs a linear backward movement on the shaft sleeve 4 via the cross pin. The gas oil damper has a damping force while releasing energy, and the door body closes slowly, so that the buffer hinge can run smoothly regardless of opening and closing.

Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that these embodiments can be changed, modified, replaced, and rearranged without departing from the spirit and spirit of the present utility model. The scope of the present utility model is limited by the appended claims and their equivalents.

Claims (8)

A buffer hinge comprising a first hinge (1) and a second hinge (2), the first hinge (1) being provided with a first sleeve (100), the second hinge (2) being provided with a second sleeve (200) is provided, characterized in that it also comprises a rotary buffer device, the rotary buffer device comprising a shaft core (3), a shaft sleeve (4) and a gas oil damper (5), the shaft core (3) being connected to the first sleeve (100). , whereby the shaft sleeve (4) is connected to the second sleeve (200), the shaft sleeve (4) driving the shaft core (3) to move up and down when the shaft sleeve (4) rotates, the gas oil damper (5) with is connected to the shaft core (3). A buffer hinge after claim 1 , characterized in that the gas oil damper (5) comprises a housing (51), a piston (52) and a piston rod (53), a piston (52) being arranged in the housing (51), the piston (52) located within the housing (51), a sealing ring (54) being encased on the outer wall of the piston (52), the piston (52) being in sealing contact with the housing (51) via a sealing ring (54), the Piston (52) divides the interior of the housing (51) into an air chamber (501) and an oil chamber (502), the end of the inner wall of the air chamber (501) being provided with a guide sleeve (55) and a sealing ring (56), one end of the piston rod (53) being installed vertically on the piston (52), the other end of the piston rod (53) passing through the guide sleeve (55), the sealing ring (56) and the housing (51) in sequence. A buffer hinge after claim 1 , characterized in that the outer peripheral surface of the shaft core (3) is provided with a spiral groove (30), wherein a pin shaft (6) is inserted laterally at the end of the piston rod (53), both ends of the pin shaft (6) with wear-resistant sleeves ( 60), the wear-resistant sleeve (60) being slidably fitted to the spiral groove (30), the outer surface of the shaft sleeve (4) being provided with a transversely penetrating guide groove (40), the wear-resistant sleeve (60) being slidably fitted to the guide groove (40) is adjusted. A buffer hinge after claim 1 , characterized in that an adjustment mechanism is arranged at the end of the second sleeve (200), the adjustment mechanism comprising an end cover (7) and an adjustment screw (8), the adjustment screw (8) being screwed to the end cover (7) by threads , with one end of the adjusting screw (8) in contact with the gas oil damper (5). A buffer hinge after claim 1 , characterized in that the wall surfaces of the first sleeve (100) and the second sleeve (200) are screwed together by threads with fastening screws (9), the first sleeve (100) being fixed to the shaft core (3) via a fastening screw (9). is connected, the second sleeve (200) being firmly connected to the shaft sleeve (4) via a fastening screw (9). A buffer hinge after claim 1 , characterized in that a sliding bearing (300) is arranged between the first sleeve (100) and the second sleeve (200). A buffer hinge after claim 1 , characterized in that the sealing ring (56) has a circular platform shape, with an end of the sealing ring (56) with a larger face being in sealing contact with the housing (51) and an end of the sealing ring (56) with a smaller face with the guide sleeve (55) is in contact, a groove being arranged on the end face of the sealing ring (56) facing the piston (52). A buffer hinge after claim 1 , characterized in that a compression spring (57) is arranged in the oil chamber (502), one end of the compression spring (57) being in contact with the inner end of the housing (51), the other end of the compression spring (57) being in is in contact with the piston (52).

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