CN219622522U

CN219622522U - Concealed hinge buffer

Info

Publication number: CN219622522U
Application number: CN202320520130.2U
Authority: CN
Inventors: 贺有云; 赖俭; 贺阳
Original assignee: Shenzhen Yinuowei Technology Co ltd
Current assignee: Shenzhen Yinuowei Technology Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-09-01
Anticipated expiration: 2033-03-10

Abstract

The utility model relates to a hidden hinge buffer, which comprises a buffer body, a hinge and a hinge, wherein a main oil cavity and an oil way which are communicated are arranged in the buffer body; the piston is slidably arranged in the buffer body and is provided with a driving part, and the driving part is positioned in the main oil cavity and separates the main oil cavity to form a first cavity and a second cavity; the elastic piece is arranged in the buffer body and connected with the piston; the regulating valve is movably arranged on the buffer body, extends into the oil path and can movably regulate the oil quantity entering the oil path; the piston can slide to the outside of the buffer body to enable oil in the second cavity to flow into the first cavity through the oil circuit, and the piston can slide to the inside of the buffer body to enable oil in the first cavity to flow into the second cavity through the oil circuit. The hidden hinge buffer can be directly installed in a hidden mode, is not limited by places, and can adjust buffering force by controlling oil pressure.

Description

Concealed hinge buffer

Technical Field

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

Background

In daily life, a hinge is generally used to connect two objects so that the two objects can rotate relatively, and the function of the hinge is particularly important when the door body is installed.

In order to ensure that the door body is provided with attractive appearance after being provided with the hinge, the hinge hidden in the door frame is designed, and when the door is used, the door is not easy to damage, the force buffering during closing and opening needs to be considered, and when the door is gradually close to the door frame, the force is gradually buffered and becomes smaller. At present, the buffer is provided by arranging the springs, but the arrangement of the springs is limited by the building structure, the springs are not easy to install, the buffer force is completely dependent on the elasticity of the springs, and the buffer cannot be adjusted according to the force used by an operator.

Disclosure of Invention

Based on this, it is necessary to provide a hidden hinge buffer which can be directly installed in a hidden manner, is not limited by the place, and can adjust the buffering force by controlling the oil pressure.

A hidden hinge damper comprising:

the buffer body is internally provided with a main oil cavity and an oil way which are communicated with each other;

the piston is slidably arranged in the buffer body and is provided with a driving part, and the driving part is positioned in the main oil cavity and separates the main oil cavity to form a first cavity and a second cavity;

the elastic piece is arranged in the buffer body and connected with the piston, the piston moves towards the outside of the buffer body to enable the elastic piece to be compressed, and the piston can return to the buffer body under the elastic restoring force of the elastic piece; a kind of electronic device with high-pressure air-conditioning system

The regulating valve is movably arranged on the buffer body and extends into the oil path, and the regulating valve can movably regulate the oil quantity entering the oil path; the piston can slide to the outside of the buffer body to enable oil in the second cavity to flow into the first cavity through the oil circuit, and the piston can slide to the inside of the buffer body to enable oil in the first cavity to flow into the second cavity through the oil circuit.

Above-mentioned hidden hinge buffer, buffer body can be hidden to install in the door frame, and piston and hinged joint. When the door is required to be opened, the piston is driven to move towards the outside of the buffer body, the driving part compresses the space in the second cavity and enables oil in the second cavity to flow to the first cavity through the oil way, meanwhile, the elastic piece is compressed, and in the door opening process, the oil in the second cavity is extruded to form door opening buffer force; when the door needs to be closed, the piston is driven to move towards the inside of the buffer body, the driving part can compress the space in the first cavity and enable oil in the first cavity to flow to the second cavity through the oil way, meanwhile, the elastic piece can provide elastic restoring force, when the door is just closed, the elastic force is maximum, when the door is closed, the elastic force is smaller, the oil in the first cavity is extruded to form door closing buffer force in the door closing process, the door closing speed is gentle, and the impact force generated during door closing is small. In addition, the regulating valve can move and adjust the oil quantity in the oil way to adjust the oil pressure when first cavity or second cavity is compressed, and then realize the regulation to the buffering power size. When the door is used, the door does not occupy the space, has no noise, and can be opened and closed according to the weight of the door.

In one embodiment, the buffer body comprises a buffer main body and a buffer sleeve, the main oil cavity and the oil way are arranged in the buffer main body, and the regulating valve is arranged on the buffer main body; one end of the buffer sleeve is connected with the buffer main body, one end of the piston extends into the buffer sleeve, a blocking part is arranged on the end of the piston in a protruding mode, the elastic piece is sleeved on the piston, and two ends of the elastic piece are respectively abutted to the blocking part and the inner wall of the buffer sleeve. The hidden design of the elastic piece is convenient, and the elastic matching structure of the elastic piece and the piston is more stable.

In one embodiment, the oil path comprises a first flow path and a second flow path, the first flow path comprises a first opening and a second opening which are spaced, the first opening is communicated with the second cavity, the second opening is communicated with the first cavity, and the piston slides towards the outside of the buffer body to enable oil in the second cavity to flow into the first cavity through the first opening and the second opening;

the second flow channel comprises a third opening and a fourth opening which are arranged at intervals, the third opening is communicated with the first cavity, the fourth opening is communicated with the second cavity, the piston slides towards the inside of the buffer body to enable oil in the first cavity to flow into the second cavity through the third opening and the fourth opening, and the first flow channel and the second flow channel are unidirectional flow channels. Independent door opening buffer flow channels and door closing buffer flow channels can be formed, and when the door is opened and closed, oil flows more smoothly, and the buffer effect is more stable.

In one embodiment, the device further comprises a first baffle and a second baffle, a driving flow channel communicated with the main oil cavity is arranged in the driving part, a first movable cavity communicated with the driving flow channel is arranged on one side, facing the first cavity, of the driving part, a second movable cavity communicated with the driving flow channel is arranged on one side, facing the second cavity, of the driving part, the first baffle is movably arranged in the first movable cavity, the second baffle is movably arranged in the second movable cavity, the piston slides towards the outside of the buffer body to enable the driving flow channel to be communicated with the second opening, the first baffle opens the first movable cavity, and the second baffle closes the second movable cavity; the piston slides towards the inside of the buffer body to enable the driving flow channel to be communicated with the fourth opening, the second baffle plate enables the second movable cavity to be opened, and the first baffle plate enables the first movable cavity to be closed. The piston can be guaranteed to form corresponding oil way communication when sliding and reaching different positions, and the first baffle and the second baffle are closed and opened in a matched mode, so that the unidirectional circulation effect of the first flow channel and the second flow channel can be improved.

In one embodiment, the driving flow channel comprises a first middle channel extending along a first direction and a second middle channel extending along a second direction perpendicular to the first direction, the first middle channel is communicated with the second middle channel in a crossing way, two opposite ends of the first middle channel are respectively communicated with the first movable cavity and the second movable cavity, and the piston slides to enable one end of the second middle channel to be communicated with the second opening or enable the other end of the second middle channel to be communicated with the fourth opening.

In one embodiment, the driving part is provided with a first protruding flange and a second protruding flange at intervals, the first protruding flange is abutted with the inner side wall of the main oil cavity to form the first cavity, the second protruding flange is abutted with the inner side wall of the main oil cavity to form the second cavity, and the second middle channel is located between the first protruding flange and the second protruding flange.

In one embodiment, the first opening includes a plurality of spaced slots, the regulator valve includes a first oil valve that is movable from outside the damper body to extend into the first flow passage, and the first oil valve is movable to open or close the slots to regulate the amount of oil into the first flow passage. The first oil valve and the plurality of grooved matching structures can simply and effectively realize the adjustment of the oil quantity entering the first flow passage, and then the buffer force can be effectively adjusted.

In one embodiment, the second flow passage comprises a first branch and a second branch which are spaced, one port of the first branch and one port of the second branch are communicated with the first cavity, the other port of the first branch and the other port of the second branch are staggered along a first direction, and the piston slides to enable oil in the first cavity to flow into the second cavity through the first branch and/or the second branch. When the door is closed in different angle states, one branch flow communication or two branch flows are communicated simultaneously, and oil quantity can be provided adaptively according to the buffering force required by closing the door.

In one embodiment, the regulating valve further comprises a second oil valve and a third oil valve, the second oil valve moves from the outer side of the buffer body to extend into the first branch flow, and a gap is formed between the second oil valve and the inner wall of the first branch flow; the third oil valve moves from the outer side of the buffer body to extend into the second branch flow, and a gap is formed between the third oil valve and the inner wall of the second branch flow.

In one embodiment, the second oil valve has a first tapered end, the first tapered end is inserted into the first substream, and the second oil valve is capable of movably adjusting a gap between the first tapered end and an inner wall of the first substream;

the third oil valve is provided with a second conical end, the second conical end is inserted into the second tributary, and the third oil valve can movably adjust a gap between the second conical end and the inner wall of the second tributary. The second and third conical oil valves can simply and effectively regulate the oil quantity entering the first and second branches, and further effectively regulate the buffering force.

Drawings

FIG. 1 is a schematic diagram of a hidden hinge buffer according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a hidden hinge damper of the present utility model in a door open state;

FIG. 3 is a cross-sectional view of one embodiment of a hidden hinge damper of the present utility model;

FIG. 4 is a cross-sectional view of a hidden hinge damper of the present utility model in a first closed position;

FIG. 5 is a cross-sectional view of a hidden hinge damper of the present utility model in a second door closed position;

fig. 6 is a cross-sectional view of a hidden hinge damper of the present utility model in a third door-closed state.

In the drawings, the list of components represented by the various numbers is as follows:

100. a hidden hinge buffer; 1. a buffer body; 11. a main oil chamber; 111. a first cavity; 112. a second cavity; 12. an oil path; 121. a first flow passage; 1211. a first opening; 12111. slotting; 1212. a second opening; 122. a first substream; 123. a second substream; 13. a buffer body; 14. a buffer sleeve; 2. a piston; 21. a driving section; 211. driving the flow channel; 2111. a first intermediate channel; 2112. a second intermediate channel; 212. a first movable chamber; 213. a second movable chamber; 214. a first flange; 215. a second flange; 22. a blocking portion; 3. an elastic member; 4. a regulating valve; 41. a first oil valve; 42. a second oil valve; 421. a first tapered end; 43. a third oil valve; 431. a second tapered end; 51. a first baffle; 52. and a second baffle.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to the appended drawings. It is apparent that the specific details described below are only some of the embodiments of the present utility model and that the present utility model may be practiced in many other embodiments that depart from those described herein. Based on the embodiments of the present utility model, all other embodiments obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 3, in one embodiment, a hidden hinge buffer 100 includes: a buffer body 1, a piston 2, an elastic member 3 and a regulating valve 4. The buffer body 1 is internally provided with a main oil cavity 11 and an oil way 12 which are communicated. The piston 2 is slidably disposed in the buffer body 1, and the piston 2 has a driving portion 21, and the driving portion 21 is disposed in the main oil chamber 11 and separates the main oil chamber 11 to form a first chamber 111 and a second chamber 112. And the elastic piece 3 is arranged in the buffer body 1, and the elastic piece 3 is connected with the piston 2. The piston 2 moves to the outside of the cushion body 1 to compress the elastic member 3, and the piston 2 can return to the inside of the cushion body 1 by the elastic restoring force of the elastic member 3. The regulating valve 4 is movably arranged on the buffer body 1, and the regulating valve 4 extends into the oil path 12, and the regulating valve 4 can movably regulate the oil quantity entering the oil path 12.

In the hidden hinge damper 100, the damper body 1 can be installed in a door frame in a hidden manner, and the piston 2 is connected to a hinge. When the door needs to be opened, the piston 2 is driven and moves towards the outside of the buffer body 1, the driving part 21 compresses the space in the second cavity 112, and enables oil in the second cavity 112 to flow to the first cavity 111 through the oil way 12, meanwhile, the elastic piece 3 is compressed, and in the door opening process, the oil in the second cavity 112 is extruded to form door opening buffer force; when the door needs to be closed, the piston 2 is driven to move towards the inside of the buffer body 1, the driving part 21 can compress the space in the first cavity 111 and enable oil in the first cavity 111 to flow to the second cavity 112 through the oil way 12, meanwhile, the elastic piece 3 can provide elastic restoring force, when the door is closed, the elastic force is maximum, when the door is closed, the elastic force is smaller, in the door closing process, the oil in the first cavity 111 is extruded to form door closing buffer force, the door closing speed is gentle, and the impact force is small when the door is closed. In addition, the regulating valve 4 can move and regulate the oil amount entering the oil path 12 so as to regulate the oil pressure when the first cavity 111 or the second cavity 112 is compressed, and further regulate the buffering force. When the door is used, the door does not occupy the space, has no noise, and can be opened and closed according to the weight of the door.

Referring to fig. 1 and 2, in an embodiment of the buffer body 1, the buffer body 1 includes a buffer main body 13 and a buffer sleeve 14, a main oil chamber 11 and an oil path 12 are disposed in the buffer main body 13, and the regulating valve 4 is disposed on the buffer main body 13. The cushion sleeve 14 is hollow inside and has one end connected to the cushion body 13. One end of the piston 2 extends into the damping sleeve 14 and a stop 22 protrudes on the outside of this end of the piston 2. The elastic member 3 is sleeved on the piston 2, and two ends of the elastic member 3 are respectively abutted against the blocking portion 22 and the inner wall of the buffer sleeve 14. The elastic member 3 may be a spring. The structure of the buffer body 1 is convenient for the hidden design of the elastic piece 3, and the elastic matching structure of the elastic piece 3 and the piston 2 is more stable.

Referring to fig. 2, in an embodiment, the oil path 12 includes a first flow passage 121 and a second flow passage, the first flow passage 121 includes a first opening 1211 and a second opening 1212 spaced apart, the first opening 1211 communicates with the second cavity 112, and the second opening 1212 communicates with the first cavity 111. The piston 2 slides to the outside of the buffer body 1, and the oil in the second chamber 112 flows into the first chamber 111 through the first opening 1211 and the second opening 1212. The second flow path includes third and fourth spaced openings, the third opening communicating with the first cavity 111 and the fourth opening communicating with the second cavity 112. The piston 2 slides toward the inside of the buffer body 1 to allow the oil in the first chamber 111 to flow into the second chamber 112 through the third opening and the fourth opening. The first flow channel 121 and the second flow channel are unidirectional flow channels. Independent door opening buffer flow channels and door closing buffer flow channels can be formed, and when the door is opened and closed, oil flows more smoothly, and the buffer effect is more stable.

Referring to fig. 2 and 3, in another embodiment, the hidden hinge buffer 100 further includes a first blocking piece 51 and a second blocking piece 52. The driving part 21 is internally provided with a driving flow passage 211 communicated with the main oil cavity 11, one side of the driving part 21 facing the first cavity 111 is provided with a first movable cavity 212 communicated with the driving flow passage 211, and one side of the driving part 21 facing the second cavity 112 is provided with a second movable cavity 213 communicated with the driving flow passage 211. The first baffle plate 51 is movably disposed in the first movable cavity 212, and the second baffle plate 52 is movably disposed in the second movable cavity 213. Sliding the piston 2 toward the outside of the buffer body 1 causes the driving flow passage 211 to communicate with the second opening 1212, and causes the first shutter 51 to open the first movable chamber 212 and the second shutter 52 to close the second movable chamber 213. The piston 2 slides toward the inside of the buffer body 1 to communicate the driving flow passage 211 with the fourth opening, and to open the second movable chamber 213 by the second shutter 52, and to close the first movable chamber 212 by the first shutter 51. By providing the first barrier 51 and the second barrier 52, it is possible to form: when the door is opened, the first baffle plate 51 opens the first movable cavity 212, the second baffle plate 52 closes the second movable cavity 213, and the oil in the first cavity 111 can only flow into the first cavity 111 from the first opening 1211, the second opening 1212, the driving flow channel 211 and the first movable cavity 212; when the door is closed, the first baffle plate 51 closes the first movable cavity 212, the second baffle plate 52 opens the second movable cavity 213, and the oil in the second cavity 112 can only flow into the second cavity 112 from the third opening, the fourth opening, the driving flow passage 211 and the second movable cavity 213. This structure can enhance the unidirectional flow effect of the first flow passage 121 and the second flow passage.

Referring to fig. 3, further, the driving flow channel 211 includes a first intermediate channel 2111 extending along a first direction (i.e. transverse direction) and a second intermediate channel 2112 extending along a second direction (i.e. vertical direction) perpendicular to the first direction, the first intermediate channel 2111 is in cross communication with the second intermediate channel 2112, and opposite ends of the first intermediate channel 2111 are respectively communicated with the first movable chamber 212 and the second movable chamber 213. When the door is opened, the piston 2 slides to enable one end of the second intermediate channel 2112 to be communicated with the second opening 1212; when the door is closed, the piston 2 slides to communicate the other end of the second intermediate passage 2112 with the fourth opening.

The driving portion 21 has first and second protruding flanges 214 and 215 spaced apart from each other in the first direction, the first flange 214 abuts against the inner wall of the main oil chamber 11 to form a first chamber 111, the second flange 215 abuts against the inner wall of the main oil chamber 11 to form a second chamber 112, and the second intermediate passage 2112 is located between the first and second flanges 214 and 215.

Referring to fig. 2, in an embodiment, the first opening 1211 includes a plurality of slots 12111 spaced apart along the first direction, the regulating valve 4 includes a first oil valve 41, the first oil valve 41 is movable from outside the buffer body 1 to extend into the first flow passage 121, and the first oil valve 41 opens or closes the slots 12111 by moving to regulate the amount of oil entering the first flow passage 121. The cooperation structure of the first oil valve 41 and the plurality of grooves 12111 can simply and effectively realize the adjustment of the oil quantity entering the first flow passage 121, and further effectively adjust the magnitude of the buffering force.

Referring to fig. 4 and 5, in an embodiment of the second flow channel, the second flow channel includes a first branch 122 and a second branch 123 spaced apart, one port of the first branch 122 and the second branch 123 communicates with the first cavity 111, and the other ports of the first branch 122 and the second branch 123 are staggered along the first direction. The sliding movement of the piston 2 causes the oil in the first chamber 111 to flow into the second chamber 112 via the first branch 122 and/or the second branch 123. When the door is closed in different angle states, one branch flow communication or two branch flows are communicated simultaneously, and oil quantity can be provided adaptively according to the buffering force required by closing the door.

The regulator valve 4 further includes a second oil valve 42 and a third oil valve 43, the second oil valve 42 is moved from the outside of the buffer body 1 to extend into the first branch 122, and a gap is provided between the second oil valve 42 and the inner wall of the first branch 122, through which the oil in the first branch 122 can flow into the second intermediate passage 2112. The third oil valve 43 is moved from the outside of the buffer body 1 to extend into the second branch flow 123 with a gap between the third oil valve 43 and the inner wall of the second branch flow 123, through which gap the oil in the second branch flow 123 can flow into the second intermediate passage 2112.

Referring to fig. 5, further, the second oil valve 42 has a first tapered end 421, the first tapered end 421 is inserted into the first tributary 122, and the second oil valve 42 can move to adjust the gap between the first tapered end 421 and the inner wall of the first tributary 122, so that the second oil valve 42 can simply and effectively adjust the amount of oil entering the first tributary 122, and further effectively adjust the buffering force. The third oil valve 43 has a second tapered end 431, the second tapered end 431 is inserted into the second tributary 123, and the third oil valve 43 can move to adjust the gap between the second tapered end 431 and the inner wall of the second tributary 123, so that the tapered third oil valve 43 can simply and effectively adjust the amount of oil entering the second tributary 123, and further effectively adjust the buffer force.

In practical application, when the door is opened, the piston 2 slides to the outside of the buffer main body 13, the second movable cavity 213 is closed by the second baffle plate 52, the first movable cavity 212 is opened by the first baffle plate 51, the space in the second cavity 112 is compressed, the elastic member 3 is compressed by the baffle portion 22, and the flow path of oil is: second chamber 112, first opening 1211, first flow channel 121, second opening 1212, second intermediate channel 2112, first intermediate channel 2111, first movable chamber 212, first chamber 111.

The closing of the door is divided into three phases, please refer to fig. 4, the first phase: the angle that the door was opened is 90 ~ 60, and quick closing door (oil pressure buffer force is little), and piston 2 slides to buffering main part 13 inside, and first fly chamber 212 is closed to first separation blade 51, and second fly chamber 213 is opened to second separation blade 52, and the space in the first cavity 111 is compressed, and elastic restoring force of elastic component 3 is the biggest this moment, and the flow path of oil is: first chamber 111, first branch 122, the gap between first branch 122 and second oil valve 42, second intermediate passage 2112, first intermediate passage 2111, second movable chamber 213, second chamber 112.

Referring to fig. 5, the second stage: the angle that the door was opened is 60 ~ 15, and the door closing speed slows down (oil pressure buffer force gradually increases), and piston 2 continues to slide to the inside of buffering main part 13, and the space in the first cavity 111 continues to be compressed, and first fly chamber 212 is continued to be closed to first separation blade 51, and second fly chamber 213 is continued to be opened to second separation blade 52, and elastic restoring force of elastic component 3 is medium at this moment, and the flow path of oil divide into two: first chamber 111, first branch 122, the gap between first branch 122 and second oil valve 42, second intermediate passage 2112, first intermediate passage 2111, second movable chamber 213, second chamber 112; and first chamber 111, second branch flow 123, the gap between second branch flow 123 and third oil valve 43, second intermediate passage 2112, first intermediate passage 2111, second movable chamber 213, second chamber 112.

Referring to fig. 6, the third stage: the angle that the door opened is 15 ~ 0, slowly closes the door (oil pressure buffer force increases gradually), and piston 2 further slides to the inside of buffering main part 13, and the space in the first cavity 111 is further compressed, and first separation blade 51 continues to close first movable chamber 212, and second separation blade 52 continues to open second movable chamber 213, and elastic restoring force of elastic component 3 is minimum this moment, because first tributary 122 staggers along first direction with the port that second tributary 123 kept away from first cavity 111, the flow path of oil is: the first chamber 111, the second branch flow 123, the gap between the second branch flow 123 and the third oil valve 43, the second intermediate passage 2112, the first intermediate passage 2111, the second movable chamber 213, and the second chamber 112.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications, substitutions and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and are intended to be within the scope of the utility model. Accordingly, the protection scope of the present utility model is subject to the claims.

Claims

1. A hidden hinge damper, comprising:

2. The hidden hinge buffer according to claim 1, wherein the buffer body comprises a buffer main body and a buffer sleeve, the buffer main body is internally provided with the main oil cavity and the oil path, and the regulating valve is arranged on the buffer main body; one end of the buffer sleeve is connected with the buffer main body, one end of the piston extends into the buffer sleeve, a blocking part is arranged on the end of the piston in a protruding mode, the elastic piece is sleeved on the piston, and two ends of the elastic piece are respectively abutted to the blocking part and the inner wall of the buffer sleeve.

3. The hidden hinge damper according to claim 1, wherein the oil passage includes a first flow passage and a second flow passage, the first flow passage including a first opening and a second opening spaced apart from each other, the first opening communicating with the second chamber, the second opening communicating with the first chamber, the piston sliding outward of the damper to allow oil in the second chamber to flow into the first chamber through the first opening, the second opening;

the second flow channel comprises a third opening and a fourth opening which are arranged at intervals, the third opening is communicated with the first cavity, the fourth opening is communicated with the second cavity, the piston slides towards the inside of the buffer body to enable oil in the first cavity to flow into the second cavity through the third opening and the fourth opening, and the first flow channel and the second flow channel are unidirectional flow channels.

4. The hidden hinge buffer according to claim 3, further comprising a first baffle and a second baffle, wherein a driving flow channel communicated with the main oil cavity is arranged in the driving part, a first movable cavity communicated with the driving flow channel is arranged on one side of the driving part facing the first cavity, a second movable cavity communicated with the driving flow channel is arranged on one side of the driving part facing the second cavity, the first baffle is movably arranged in the first movable cavity, the second baffle is movably arranged in the second movable cavity, the piston slides towards the outside of the buffer body to enable the driving flow channel to be communicated with the second opening, the first baffle opens the first movable cavity, and the second baffle closes the second movable cavity; the piston slides towards the inside of the buffer body to enable the driving flow channel to be communicated with the fourth opening, the second baffle plate enables the second movable cavity to be opened, and the first baffle plate enables the first movable cavity to be closed.

5. The hidden hinge damper of claim 4, wherein the driving flow path includes a first intermediate channel extending in a first direction and a second intermediate channel extending in a second direction perpendicular to the first direction, the first intermediate channel being in cross communication with the second intermediate channel, opposite ends of the first intermediate channel being in communication with the first movable chamber and the second movable chamber, respectively, and the piston sliding causing one end of the second intermediate channel to be in communication with the second opening or the other end of the second intermediate channel to be in communication with the fourth opening.

6. The hidden hinge damper according to claim 5, wherein the driving portion has first and second protruding flanges spaced apart from each other, the first flange being in contact with an inner side wall of the main oil chamber to form the first chamber, the second flange being in contact with an inner side wall of the main oil chamber to form the second chamber, and the second intermediate passage being located between the first and second flanges.

7. A hidden hinge damper according to claim 3, wherein the first opening includes a plurality of spaced slots, the regulator valve includes a first oil valve that is movable from outside the damper body to extend into the first flow passage, and the first oil valve is movable to open or close the slots to regulate the amount of oil entering the first flow passage.

8. A hidden hinge damper according to claim 3, wherein the second flow path includes first and second branches spaced apart, one port of the first and second branches communicating with the first chamber, the other ports of the first and second branches being offset in a first direction, the piston sliding to cause oil in the first chamber to flow into the second chamber through the first and/or second branches.

9. The concealed hinge damper of claim 8, wherein the regulator valve further comprises a second oil valve and a third oil valve, the second oil valve extending into the first branch from outside the damper body with a gap between the second oil valve and the first branch inner wall; the third oil valve moves from the outer side of the buffer body to extend into the second branch flow, and a gap is formed between the third oil valve and the inner wall of the second branch flow.

10. The concealed hinge damper of claim 9, wherein the second oil valve has a first tapered end that is inserted within the first branch flow and is movable to adjust a gap between the first tapered end and the first branch flow inner wall;

the third oil valve is provided with a second conical end, the second conical end is inserted into the second tributary, and the third oil valve can movably adjust a gap between the second conical end and the inner wall of the second tributary.