CN112554694A

CN112554694A - Buffer gear of hinge

Info

Publication number: CN112554694A
Application number: CN202011227822.5A
Authority: CN
Inventors: 陈云
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-03-26

Abstract

The invention relates to a buffer mechanism of a hinge, which comprises a mandrel, wherein the mandrel comprises a first fixed sleeve and a second fixed sleeve which are coaxially arranged, an axial cavity is formed in the first fixed sleeve, and the buffer mechanism of the hinge is characterized in that: an adjusting port and a connecting port are respectively arranged at two ends of the axial cavity, an axial driving mechanism is arranged in the axial cavity, a resistance head is arranged at the adjusting port, and a return spring and a damping adjusting mechanism are arranged between the axial driving mechanism and the resistance head; the axial driving mechanism comprises a driving seat, the driving seat comprises a driving shaft and a driving sleeve, a driving cavity is formed in one end, away from the driving shaft, of the driving sleeve, a spiral groove is formed in the side wall of the driving sleeve, and an axial guide groove is formed in the inner wall, corresponding to the driving sleeve, of the axial cavity; the driving shaft penetrates out of the first fixing sleeve from the connecting port along the axial direction and is connected with the second fixing sleeve; the invention has the characteristics of compact structure, convenient adjustment and multiple functions.

Description

Buffer gear of hinge

Technical Field

The invention relates to a hinge, in particular to a buffer mechanism of the hinge.

Background

The hinge is swing joint between mainly used door and window and door frame or the window frame, and traditional hinge is formed on the axle center by door frame hinge and door leaf hinge, only has the function of rotatory activity, adopts the tradition to close the face owing to there is not damping effect, can not prevent wind and close too fast simultaneously and can strike the door frame, also has the potential safety hazard simultaneously.

The buffering hinge is designed for people, for example, the publication No. CN 06837042B discloses a hydraulic buffering hinge, which comprises a shaft sleeve, a door frame leaf hinged with the shaft sleeve and a shaft core arranged in the shaft sleeve, wherein the shaft sleeve is externally sleeved with the door leaf connected with the shaft core, and one end of the shaft core is provided with a guide part; the guide part is sleeved with a piston clamped with the guide part; an energy storage spring is sleeved outside the shaft core; one end of the energy storage spring is abutted against the upper end of the shaft core, and the other end of the energy storage spring is abutted against the piston; two sides of the piston are provided with mutually symmetrical lead grooves; a rolling sleeve pin is erected in the shaft sleeve and penetrates through the lead grooves on the two sides of the piston, and a rolling sleeve matched with the lead grooves is sleeved outside the rolling sleeve pin; the lead groove is spiral; the upper part of the lead groove is an opening and closing groove, the middle part of the lead groove is a door stopping groove, and the lower part of the lead groove is a buffer groove; positioning notches matched with the rolling sleeves are formed in the two sides of the middle of the lead groove; an adjusting seat is fixed at the lower end port of the shaft sleeve; an adjusting screw is screwed on the adjusting seat; the adjusting screw is connected with an oil needle; an oil needle sleeve is fixed at the bottom of the piston; the oil needle sleeve is provided with a damping hole matched with the oil needle; a damping channel is formed by a gap between the damping hole and the oil needle; the oil needle comprises an upper needle body and a lower needle body, the diameter of the upper needle body is larger than that of the lower needle body, and a step is formed between the upper needle body and the lower needle body; the oil needle sleeve is provided with a one-way valve; hydraulic oil is filled in a cavity formed between the shaft sleeve and the piston; the oil needle sleeve is provided with an auxiliary oil groove which is in a half-cake shape; the damping hole is positioned in the middle of the auxiliary oil groove and communicated with the auxiliary oil groove.

In the structure, the damping mechanism cannot freely adjust the opening and closing speed, so that the elastic force of the energy storage spring cannot be too large, and the door needs a certain speed to ensure the suction of the door lock before the door is closed.

Disclosure of Invention

The invention aims to provide a buffer mechanism of a hinge, which improves the internal structure of the hinge, can realize free flow regulation of a damping mechanism, is convenient to regulate the opening and closing speed, and has the characteristics of compact structure, convenience in regulation and multiple functions.

The following technical scheme is adopted for achieving the purpose:

a buffer mechanism of a hinge comprises a shaft core, wherein the shaft core comprises a first fixed sleeve and a second fixed sleeve which are coaxially arranged, an axial cavity is formed in the first fixed sleeve, an adjusting port and a connecting port are respectively arranged at two ends of the axial cavity, an axial driving mechanism is arranged in the axial cavity, a resistance head is arranged at the adjusting port, and a reset spring and a damping adjusting mechanism are arranged between the axial driving mechanism and the resistance head; the axial driving mechanism penetrates out of the first fixing sleeve and is connected with the second fixing sleeve; the damping adjusting mechanism comprises a piston, an adjusting rod and an adjusting nut; the piston comprises a piston rod and a piston head, one end of the piston rod is contained in the axial driving mechanism, the other end of the piston rod is connected with the piston head, the outer edge of the piston head is matched with the inner wall of the axial cavity to separate the axial cavity into a left cavity and a right cavity or an upper cavity and a lower cavity, hydraulic oil is filled in the axial cavity, the piston head is provided with a damping cavity, the damping cavity is communicated with the left cavity and the right cavity or the upper cavity and the lower cavity, a flow regulating valve is arranged in the damping cavity, the flow regulating valve is connected with a regulating nut.

The piston rod is provided with a connector at one end corresponding to the piston head, the outer edge of the connector is provided with an external thread, an opening at one end of the piston head corresponding to the piston rod forms a damping cavity, and the inner wall of the damping cavity is provided with an internal thread; the piston head is connected with the connector through threads to seal the damping cavity, a connecting round hole and a flow adjusting hole which are communicated with the inside of the damping cavity are formed in the end face, away from the movable rod, of the piston head, and a flow channel hole which is communicated with the damping cavity is further formed in the connector.

The flow regulating valve comprises a regulating valve plate, the regulating rod comprises a first connecting rod and a second connecting rod, the first connecting rod is fixedly connected with the regulating valve plate or is of an integral structure, the first connecting rod extends from the connecting circular hole to the direction of the regulating nut, and the second connecting rod is fixedly connected with the regulating nut or is of an integral structure; the end part of the second connecting rod corresponding to the first connecting rod is provided with a connecting groove, a spring is arranged between the adjusting valve plate and the connecting head, and the spring pushes the adjusting valve plate to the direction of the adjusting nut, so that the adjusting valve plate is tightly attached to the inner side of the end face of the damping cavity, which is provided with the connecting round hole and the flow adjusting hole; the adjusting nut can drive the adjusting valve plate to rotate through the adjusting rod, and the adjusting valve plate rotates to change the opening and closing of the through flow adjusting hole or the aperture size.

The axial driving mechanism comprises a driving seat, the driving seat comprises a driving shaft and a driving sleeve, a driving cavity is formed in one end, away from the driving shaft, of the driving sleeve, a spiral groove is formed in the side wall of the driving sleeve, and an axial guide groove is formed in the inner wall, corresponding to the driving sleeve, of the axial cavity; the driving shaft penetrates out of the first fixing sleeve from the connecting port along the axial direction and is connected with the second fixing sleeve; the piston rod is provided with a driving pin, and two ends of the driving pin penetrate through the spiral groove and are accommodated in the axial guide groove.

Oil seals are arranged between the driving shaft and the resistance head and the inner walls of the connecting port and the adjusting port of the first fixing sleeve respectively; an oil seal is also arranged between the adjusting nut and the inner wall of the adjusting hole, and an oil seal is arranged between the piston head and the inner wall of the first fixed sleeve.

The upper end part of the spiral groove is provided with an anti-drop groove.

The damping adjusting mechanism can freely adjust the size of the flow path, realizes stepless adjustment of hinge joint speed, and meets the requirements of different occasions; meanwhile, because the adjustment range of the damping flow is large, a return spring with large return force can be adopted, so that the buffer effect is good, and the return force can overcome the blocking of the door lock; the invention has the characteristics of compact structure, convenient adjustment and multiple functions.

Drawings

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

FIG. 2 is a schematic view (one) of the internal structure of the mandrel of the present invention;

FIG. 3 is a schematic view of the internal structure of the mandrel of the present invention;

FIG. 4 is an exploded view of the mandrel of the present invention;

FIG. 5 is an exploded view of the mandrel of the present invention;

fig. 6 is a schematic view (one) of the internal structure of the first fixing sleeve of the present invention;

fig. 7 is a schematic view (two) of the internal structure of the first fixing sleeve of the present invention;

fig. 8 is an exploded view of the damping adjustment mechanism of the present invention.

Detailed Description

As shown in fig. 1-8, a multifunctional buffering hinge comprises a shaft core, the shaft core 1 comprises a first fixing sleeve 2 and a second fixing sleeve 3 which are coaxially arranged, an axial cavity 21 is formed inside the first fixing sleeve 2, an adjusting port 22 and a connecting port 23 are respectively arranged at two ends of the axial cavity 21, an axial driving mechanism is arranged in the axial cavity 21, a stop 24 is arranged at the adjusting port 22, and a return spring 25 and a damping adjusting mechanism are arranged between the axial driving mechanism and the stop 24; the axial driving mechanism comprises a driving seat 4, the driving seat comprises a driving shaft 41 and a driving sleeve 42, one end of the driving sleeve 42, which is far away from the driving shaft 41, is provided with a driving cavity 43, the side wall of the driving sleeve 42 is provided with a spiral groove 44, and the inner wall of the axial cavity 21, which corresponds to the driving sleeve 42, is provided with an axial guide groove 26; the drive shaft 41 passes axially through the connection port 23 and out of the first pouch 2 to connect with the second pouch 3.

The damping adjusting mechanism comprises a piston, an adjusting rod and an adjusting nut 56; the piston comprises a piston rod 51 and a piston head 52, one end of the piston rod 51 is accommodated in the driving cavity 43, a driving pin 53 is arranged on the piston rod 51, two ends of the driving pin 53 penetrate through the spiral groove 44 and are accommodated in the axial guide groove 26, the other end of the piston rod 51 is connected with the piston head 52, the outer edge of the piston head 52 is matched with the inner wall of the axial cavity 21 to separate the axial cavity 21 into a left cavity, a right cavity, an upper cavity and a lower cavity, hydraulic oil is filled in the axial cavity 21, a damping cavity 54 is arranged on the piston head 52 and is communicated with the left cavity, the right cavity, the upper cavity and the lower cavity, a flow regulating valve 5 is arranged in the damping cavity 54 and is connected with a regulating nut 56.

One end of the piston rod 51 corresponding to the piston head 52 is provided with a connector 511, the outer edge of the connector 511 is provided with an external thread, one end of the piston head 52 corresponding to the piston rod 51 is opened to form a damping cavity 54, and the inner wall of the damping cavity 54 is provided with an internal thread; the piston head 52 is connected with the connector 511 through screw threads to seal the damping cavity 54, a connecting round hole 521 and a flow adjusting hole 522 which are communicated with the inside of the damping cavity are arranged on one end face of the piston head 52 away from the movable rod, and a flow passage hole 512 which is communicated with the damping cavity is also arranged on the connector 511. The flow regulating valve comprises a regulating valve plate 55, the regulating rod comprises a first connecting rod 57 and a second connecting rod 58, the first connecting rod 57 is fixedly connected with the regulating valve plate 55 or is of an integral structure, the first connecting rod 57 extends from the connecting circular hole 521 to the regulating nut 56, and the second connecting rod 58 is fixedly connected with the regulating nut 56 or is of an integral structure; the end part of the second connecting rod 58 corresponding to the first connecting rod 57 is provided with a connecting groove 59, a spring 60 is arranged between the adjusting valve plate 55 and the connecting head 511 or the piston rod 51, and the spring 60 pushes the adjusting valve plate 55 towards the adjusting nut 56, so that the adjusting valve plate 55 is tightly attached to the inner side of the end surface of the damping cavity 54 provided with the connecting round hole 521 and the flow adjusting hole 522; the adjusting nut 56 can drive the adjusting valve plate 55 to rotate through the adjusting rod, and the adjusting valve plate 55 rotates to change the opening and closing or the aperture size of the through-flow adjusting hole 522.

A positioning hole 513 is formed at a position corresponding to the spring 60 at the connecting head 511 or the end of the piston rod 51, and one end of the spring 60 is received in the positioning hole 513.

A connecting column 551 is arranged at the joint of the center of the adjusting valve plate 55 and the first connecting rod 57, and the connecting column 551 is tightly matched with the connecting round hole 521 when the first connecting rod 57 passes through the connecting round hole.

The flow regulating hole 522 is arc-shaped, and the arc-shaped flow regulating hole 522 takes the connecting circular hole 521 as the center; the adjusting valve plate 55 is fan-shaped; the adjustment valve sheet 55 can entirely cover the arc-shaped flow adjustment hole 522.

Oil seals are respectively arranged between the driving shaft 41 and the resistance head 24 and the inner walls of the connecting port 23 and the adjusting port 22 of the first fixed sleeve 1; an oil seal is also arranged between the adjusting nut 56 and the inner wall of the adjusting hole 241, and an oil seal is arranged between the piston head 52 and the inner wall of the first fixing sleeve 2.

The working process of the invention is as follows: when the first fixing sleeve 2 and the second fixing sleeve 3 rotate relatively, namely the driving shaft and the driving sleeve rotate relatively to the first fixing sleeve 2, at the moment, the driving pin 53 is blocked by the axial guide groove 26, only the driving pin 53 moves axially along the spiral groove 44, the driving pin 53 drives the piston rod 51 and the piston head 52 to move axially together, and the piston head 52 moves to cause hydraulic oil in two cavities of the piston head 52 to flow as the axial cavity 21 is filled with the hydraulic oil; the piston head 52 axially moves and compresses the return spring 25 at the same time, the return spring 25 is pressed and accumulated to generate restoring force, and once the applied acting force is released, the movable plug 52 reversely moves under the action of the return spring 25 to realize automatic reset.

The damping adjusting mechanism is optimized and improved, a closed damping cavity 54 is formed by screwing the connector 511 and the piston head 52, the adjusting rod is divided into a first connecting rod 57 and a second connecting rod 58, the first connecting rod 57 and the adjusting valve plate 55 are integrated, the second connecting rod 58 and the adjusting nut 56 are integrated, the first connecting rod 57 extends from the connecting round hole 521 to the adjusting nut 56, the adjusting valve plate 55 is tightly attached to the flow adjusting hole 522 under the action of the spring 60, the split screwed structure of the damping cavity 54 facilitates the adjusting valve plate 55 to be placed in the damping cavity 54, and compared with the existing structure, the structure of the damping adjusting mechanism has the advantages that the first connecting rod 57 extends to the adjusting nut 56, the split adjusting rod is easy to butt joint, the mounting is more convenient, meanwhile, a sealing ring is not needed by the damping cavity 54, the structure is simpler, the assembling efficiency can be improved, and the reliability is better.

The invention is provided with a drop-proof groove 36 at the upper end of the spiral groove 34; when the hinge is opened to the maximum angle, the driving pin 42 enters the anti-falling groove 36, the acting force for opening the door is released, and the reset torsion spring 4 cannot overcome the defect that the driving pin 42 is separated from the anti-falling groove 36, so that the locking function is achieved.

Claims

1. A buffer mechanism of a hinge comprises a shaft core, wherein the shaft core (1) comprises a first fixed sleeve (2) and a second fixed sleeve (3) which are coaxially arranged, an axial cavity (21) is formed in the first fixed sleeve (2), two ends of the axial cavity (21) are respectively provided with an adjusting port (22) and a connecting port (23), an axial driving mechanism is arranged in the axial cavity (21), a stop head (24) is arranged at the adjusting port (22), and a reset spring (25) and a damping adjusting mechanism are arranged between the axial driving mechanism and the stop head (24); the axial driving mechanism penetrates through the first fixing sleeve (1) and is connected with the second fixing sleeve (3); the damping adjusting mechanism comprises a piston, an adjusting rod and an adjusting nut (56); the piston comprises a piston rod (51) and a piston head (52), one end of the piston rod (51) is contained in the axial driving mechanism, the other end of the piston rod (51) is connected with the piston head (52), the outer edge of the piston head (52) is matched with the inner wall of the axial cavity (21) to separate the axial cavity (21) into a left cavity, a right cavity, an upper cavity and a lower cavity, hydraulic oil is filled in the axial cavity (21), a damping cavity (54) is arranged on the piston head (52), the damping cavity (54) is communicated with the left cavity, the right cavity, the upper cavity and the lower cavity, a flow regulating valve (5) is arranged in the damping cavity (54), the flow regulating valve is connected with a regulating nut (56) through a regulating rod, and the regulating nut (56).

2. A cushioning mechanism for a hinge as defined in claim 1, wherein: one end of the piston rod (51) corresponding to the piston head (52) is provided with a connector (511), the outer edge of the connector (511) is provided with an external thread, one end of the piston head (52) corresponding to the piston rod (51) is opened to form a damping cavity (54), and the inner wall of the damping cavity (54) is provided with an internal thread; the piston head (52) is connected with the connector (511) through threads to seal the damping cavity (54), a connecting round hole (521) and a flow adjusting hole (522) which are communicated with the interior of the damping cavity are formed in the end face, away from the movable rod, of the piston head (52), and a flow passage hole (512) which is communicated with the damping cavity is further formed in the connector (511).

3. A cushioning mechanism for a hinge as defined in claim 2, wherein: the flow regulating valve comprises a regulating valve plate (55), the regulating rod comprises a first connecting rod (57) and a second connecting rod (58), the first connecting rod (57) is fixedly connected with the regulating valve plate (55) or is of an integrated structure, the first connecting rod (57) extends towards the direction of the regulating nut (56) from a connecting circular hole (521), and the second connecting rod (58) is fixedly connected with the regulating nut (56) or is of an integrated structure; the end part of the second connecting rod (58) corresponding to the first connecting rod (57) is provided with a connecting groove (59), a spring (60) is arranged between the adjusting valve plate (55) and the connecting head (511) or the piston rod (51), and the spring (60) enables the adjusting valve plate (55) to be propped against the direction of the adjusting nut (56), so that the adjusting valve plate (55) is tightly attached to the inner side of the end face of the damping cavity (54) provided with the connecting round hole (521) and the flow adjusting hole (522); the adjusting nut (56) can drive the adjusting valve plate (55) to rotate through the adjusting rod, and the adjusting valve plate (55) rotates to change the opening and closing of the through flow adjusting hole (522) or the aperture size.

4. A cushioning mechanism for a hinge as defined in claim 2, wherein: a positioning hole (513) is formed in the position, corresponding to the spring (60), of the end part of the connecting head (511) or the piston rod (51), and one end of the spring (60) is accommodated in the positioning hole (513).

5. A cushioning mechanism for a hinge as defined in claim 3, wherein: a connecting column (551) is arranged at the joint of the center of the adjusting valve plate (55) and the first connecting rod (57), and the connecting column (551) is tightly matched with the connecting round hole (521) when the first connecting rod (57) penetrates through the connecting round hole.

6. A cushioning mechanism for a hinge as defined in claim 3, wherein: the flow regulating hole (522) is arc-shaped, and the arc-shaped flow regulating hole (522) takes the connecting circular hole (521) as the center; the adjusting valve plate (55) is fan-shaped; the adjusting valve plate (55) can completely cover the arc-shaped flow adjusting hole (522).

7. A cushioning mechanism for a hinge as defined in claim 1, wherein: the axial driving mechanism comprises a driving seat (4), the driving seat comprises a driving shaft (41) and a driving sleeve (42), a driving cavity (43) is formed in one end, far away from the driving shaft (41), of the driving sleeve (42), a spiral groove (44) is formed in the side wall of the driving sleeve (42), and an axial guide groove (26) is formed in the inner wall, corresponding to the driving sleeve (42), of the axial cavity (21); the driving shaft (41) penetrates out of the first fixing sleeve (2) from the connecting port (23) along the axial direction and is connected with the second fixing sleeve (3); the piston rod (51) is provided with a driving pin (53), and two ends of the driving pin (53) penetrate through the spiral groove (44) and are accommodated in the axial guide groove (26).

8. The cushioning mechanism of a hinge according to claim 7, wherein: oil seals are arranged between the driving shaft (41) and the blocking head (24) and the inner walls of the connecting port (23) and the adjusting port (22) of the first fixing sleeve (1) respectively; an oil seal is also arranged between the adjusting nut (56) and the inner wall of the adjusting hole (241), and an oil seal is arranged between the piston head (52) and the inner wall of the first fixing sleeve (2).

9. The cushioning mechanism of a hinge according to claim 7, wherein: the upper end part of the spiral groove is provided with an anti-drop groove.