Three-section force random stop delay buffer hinge

Abstract

The invention discloses a three-section force random stop delay buffer hinge which comprises a door leaf hinge and a door frame hinge. A spring sleeve is fixedly arranged in the door leaf hinge shaft sleeve, an oil cylinder sleeve is fixedly arranged in the door frame hinge shaft sleeve, and a damping mechanism is arranged in the oil cylinder sleeve. A door closing spring is arranged at one end in the spring sleeve, a guide sleeve is fixedly arranged at the other end of the spring sleeve, a pair of guide holes are longitudinally formed in the side wall of the guide sleeve, and a pair of spiral grooves corresponding to the guide holes are oppositely formed in the side wall of the spring sleeve; a push rod is movably arranged in the guide sleeve; a guide shaft on the push rod penetrates through the guide hole and is arranged in the spiral groove; one end of the push rod abuts against the door closing spring, and the other end of the push rod extends into the oil cylinder sleeve to be matched with the damping mechanism. When the door leaf is rotated, the push rod moves back to the sliding piece and compresses the door closing spring; a one-way damper and a two-way damper of the damping mechanism are matched to realize delayed unlocking; the door leaf can be locked in an open state for a period of time, and enough access time is provided for people.

Description

Technical Field

[0001] The invention relates to the technical field of door and window installation accessories, and more particularly to a three-stage force arbitrary stop delay buffer hinge. Background Art

[0002] Doors in some places need to be in a normally closed state. In order to automatically close the door after it is opened, people usually install a door closer on the door head. The door closer is a hydraulic device similar to a spring. When the door is opened, it can be compressed and then released to automatically close the door. It has the function of a spring door and can ensure that the door is accurately and promptly closed to its original position after it is opened. That is, when people open the door and release the door, the existing door closer will quickly push the door back to close, affecting people's normal entry and exit, especially affecting places such as meeting rooms and offices with frequent entry and exit, especially the normal entry and exit of special groups such as the elderly and children.

[0003] In addition, the automatic closing of the door leaf by the door closer requires people to add additional door and window installation accessories to the door leaf, which increases costs and also affects the appearance. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a three-stage force arbitrary stop delay buffer hinge.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A three-stage force arbitrary stop delay buffer hinge comprises a door leaf and a door frame leaf arranged to rotate relative to each other; a spring sleeve is fixedly arranged in the door leaf shaft sleeve, an oil cylinder sleeve is fixedly arranged in the door frame shaft sleeve, and a damping mechanism is arranged in the oil cylinder sleeve;

[0007] A closing spring is provided at one end of the spring sleeve, and a guide sleeve is fixedly provided at the other end. One end of the guide sleeve is fixed to the oil cylinder sleeve, and a pair of guide holes are longitudinally provided on the side wall of the other end. A pair of spiral grooves corresponding to the guide holes are oppositely provided on the side walls of the spring sleeve.

[0008] A push rod is movably arranged in the guide sleeve, and a guide shaft on the push rod passes through the guide hole and is placed in the spiral groove; one end of the push rod abuts against the door closing spring, and the other end extends into the cylinder sleeve and cooperates with the damping mechanism;

[0009] The damping mechanism includes a one-way damper and a two-way damper that are arranged opposite to each other, and a sliding member;

[0010] The first piston rod of the one-way damper is sleeved with a first compression spring and connected to a linkage block, and the linkage block is obliquely provided with a linkage groove;

[0011] One end of the second piston rod of the bidirectional damper is matched with the linkage groove through the linkage shaft, and the other end is sleeved with a second compression spring that drives the piston of the bidirectional damper to compress inward;

[0012] One end of the sliding member abuts against the push rod, and the other end abuts against the linkage block;

[0013] When rotating the door leaf, the spiral groove drives the guide shaft to drive the push rod to move back to the sliding part and compress the door closing spring; the first compression spring drives the first piston rod to drive the linkage block to move quickly toward the two-way damper, and the linkage shaft slides along the linkage groove, driving the first piston rod to rotate and closing the oil hole of the one-way damper; the second compression spring overcomes the resistance of the two-way damper and pushes the second piston rod to move slowly inward, so that the linkage shaft slides in the opposite direction along the linkage groove, driving the first piston rod to rotate in the opposite direction, and reopening the oil hole of the one-way damper.

[0014] The present invention further provides that: the one-way damper includes a housing, the first piston rod is rotatably disposed in a sealed cavity of the housing, and the sealed cavity is filled with damping oil;

[0015] The piston assembly on the end of the first piston rod divides the sealed cavity into an upper sealed cavity and a lower sealed cavity;

[0016] The piston assembly includes an upper piston and a lower piston that cooperate with each other, the upper piston is rotatably arranged on the first piston rod, and the lower piston is fixedly arranged on the first piston rod;

[0017] The oil holes include an oil inlet hole provided on the lower piston and an oil outlet hole provided on the upper piston. When the first piston rod drives the lower piston to rotate, the oil outlet hole and the oil inlet hole are staggered, and the oil holes are closed.

[0018] The present invention further provides that: an annular groove for mounting a sealing ring is provided on the outer side wall of the upper piston, and the sealing ring is movably arranged in the annular groove; a plurality of upper oil grooves are provided on one end of the upper piston close to the upper sealing ring, and a plurality of lower oil grooves are provided on the bottom wall of the annular groove;

[0019] The upper oil groove is connected to the upper sealing cavity, and the lower oil groove is connected to the lower sealing cavity;

[0020] The damping oil flows from the upper sealing chamber into the lower sealing chamber, driving the sealing ring to separate from the upper oil groove; and connecting the upper oil groove with the annular groove.

[0021] The present invention is further configured that: the plurality of upper oil-passing grooves and the plurality of lower oil-passing grooves are arranged in a one-to-one correspondence.

[0022] The present invention further provides that: an oil-passing notch is provided on the bottom side wall of the shell.

[0023] The present invention further provides that: a positioning assembly is provided between the spring sleeve and the cylinder sleeve, the positioning assembly includes a positioning disc spring and a positioning member, the lower end surface of the positioning member abuts against the positioning disc spring, and the upper end surface of the positioning member is provided with four positioning protrusions at intervals, wherein the four positioning protrusions are evenly distributed on the upper end surface of the positioning member;

[0024] The lower end surface of the spring sleeve is provided with four positioning grooves corresponding to the four positioning protrusions at intervals;

[0025] The positioning disc spring drives the four positioning protrusions of the positioning member to cooperate with the corresponding positioning grooves to position the door leaf at the door closing position or the door opening position.

[0026] The present invention further provides that: the top end of the spring sleeve is threadedly connected with an adjusting nut, wherein the upper end of the door closing spring abuts against the adjusting nut.

[0027] The present invention further provides that: a bearing is provided between the door leaf shaft sleeve and the door frame leaf shaft sleeve.

[0028] The beneficial effects of the present invention are as follows: when the door is opened, the door leaf drives the spring sleeve to rotate, driving the push rod to move back to the sliding member and separate from the sliding member, and compressing the door closing spring;

[0029] After the push rod is separated from the sliding member, the first piston rod will, driven by the first compression spring, drive the linkage block to move quickly toward the two-way damper (because there is no damping when the first piston rod of the one-way damper extends outward), so that the linkage shaft on the end of the second piston rod slides relative to the linkage groove, thereby forcing the first piston rod to rotate to close the oil hole of the one-way damper, so that the damping oil in the upper sealing chamber and the lower sealing chamber of the one-way damper cannot flow, thereby locking the first piston rod, so that the door leaf cannot rotate in the opposite direction to close the door;

[0030] During this process, the second compression spring will overcome the resistance of the two-way damper and push the second piston rod to move slowly inward, causing the linkage shaft to slide in the opposite direction along the linkage groove to drive the first piston rod to rotate in the opposite direction, reopening the oil hole of the one-way damper and releasing the lock of the first piston rod; the push rod moves toward the sliding part driven by the door closing spring, pushing the first piston rod inward to retract into the one-way damper and compressing the first compression spring; and causing the door leaf to rotate in the opposite direction, automatically closing the door leaf; during this process, the first piston rod moves outward quickly and is quickly locked, and after the second piston rod moves inward, the lock of the first piston rod is released; the time difference is the time when the door leaf stops in the open position and delays closing; the hinge allows the door leaf to stop in the open state for a period of time after it is opened, giving people enough time to enter and exit; the door leaf does not need to be installed with a door closer, reducing the use of door leaf installation accessories, saving installation costs, and making the door leaf appearance simpler and more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural diagram of a three-stage force arbitrary stop delay buffer hinge of the present invention;

[0032] Figure 2 This is an exploded view of a three-stage force arbitrary stop delay buffer hinge of the present invention;

[0033] Figure 3 It is a cross-sectional view of the internal structure;

[0034] Figure 4 This is an exploded view of the internal structure;

[0035] Figure 5 is a cross-sectional view of a one-way damper;

[0036] Figure 6 This is an exploded view of the one-way damper;

[0037] Figure 7 It is a structural diagram of a bidirectional damper;

[0038] Figure 8 is a cross-sectional view of a bidirectional damper;

[0039] Figure 9 Schematic diagram of the structure of the upper piston;

[0040] Figure 10 It is a structural diagram of the linkage block;

[0041] Explanation of reference numerals: 1, door leaf; 11, spring sleeve; 111, spiral groove; 112, positioning groove; 113, adjusting nut; 12, door closing spring; 13, guide sleeve; 131, guide hole; 132, push rod; 1321, guide shaft; 2, door frame leaf; 21, cylinder sleeve; 3, damping mechanism; 31, one-way damper; 311, first piston rod; 312, first compression spring; 313, linkage block; 3131, linkage groove; 314, housing; 3141, oil gap; 31 5. Piston assembly; 3151. Upper piston; 31511. Oil outlet hole; 31512. Annular groove; 31513. Sealing ring; 31514. Upper oil groove; 31515. Lower oil groove; 3152. Lower piston; 31521. Oil inlet hole; 32. Two-way damper; 321. Second piston rod; 3211. Linkage shaft; 3212. Second compression spring; 33. Sliding part; 4. Positioning assembly; 41. Positioning disc spring; 42. Positioning part; 421. Positioning boss; 5. Bearing. DETAILED DESCRIPTION

[0042] Refer to the attached Figures 1 to 10 The present invention provides a three-stage force arbitrary stop delay buffer hinge and a floor spring for further detailed description.

[0043] A three-section force optional stop delay buffer hinge, comprising a door leaf 1 and a door frame 2 arranged in opposite rotation, wherein a bearing 5 is arranged between the shaft sleeve of the door leaf 1 and the shaft sleeve of the door frame 2;

[0044] A spring sleeve 11 is fixedly arranged in the shaft sleeve of the door leaf 1, and an oil cylinder sleeve 21 is fixedly arranged in the shaft sleeve of the door frame 2, and a damping mechanism 3 is arranged in the oil cylinder sleeve 21;

[0045] A door closing spring 12 is arranged at one end of the spring sleeve 11, and a guide sleeve 13 is fixedly arranged at the other end, one end of the guide sleeve 13 is fixed to the oil cylinder sleeve 21, and the other end is provided with a pair of guide holes 131 in the longitudinal wall, and a pair of helical grooves 111 corresponding to the guide holes 131 are arranged on the side wall of the spring sleeve 11;

[0046] A push rod 132 is movably arranged in the guide sleeve 13, a guide shaft 1321 on the push rod 132 passes through the guide hole 131 and is arranged in the helical groove 111; one end of the push rod 132 abuts against the door closing spring 12, and the other end extends into the oil cylinder sleeve 21 and cooperates with the damping mechanism 3;

[0047] The damping mechanism 3 comprises a one-way damper 31 and a two-way damper 32 arranged opposite to each other, and a sliding piece 33, wherein the sliding piece 33 is provided with a cavity for accommodating the two-way damper 32, a connecting shaft on the outer shell of the two-way damper 32 passes through an avoiding hole in the side wall of the sliding piece 33 and is fixed to the oil cylinder sleeve 21, and the sliding piece 33 can move forward and backward relative to the two-way damper 32;

[0048] A first compression spring 312 is sleeved on a first piston rod 311 of the one-way damper 31, and a linkage block 313 is connected, and the linkage block 313 is obliquely provided with a linkage groove 3131;

[0049] One end of a second piston rod 321 of the two-way damper 32 is connected to the linkage groove 3131 through a linkage shaft 3211, and the other end is sleeved with a second compression spring 3212 for driving the piston of the two-way damper 32 to compress inward, the second compression spring 3212 is arranged in the two-way damper 32, one end of which abuts against the piston, and the other end abuts against a sealing ring 31513 at the rear end of the two-way damper 32, so that it has an inward pushing force on the piston;

[0050] One end of the sliding piece 33 abuts against the push rod 132, and the other end abuts against the linkage block 313;

[0051] When the door is opened, the door leaf 1 drives the spring sleeve 11 to rotate, drives the push rod 132 to move away from the sliding piece 33, and separates from the sliding piece 33, and compresses the door closing spring 12;

[0052] After the push rod 132 is separated from the sliding member 33, the first piston rod 311, driven by the first compression spring 312, drives the linkage block 313 to move quickly toward the two-way damper 32 (because there is no damping when the first piston rod 311 of the one-way damper 31 extends outward), causing the linkage shaft 3211 on the end of the second piston rod 321 to slide relative to the linkage groove 3131, thereby forcing the first piston rod 311 to rotate, thereby closing the oil hole of the one-way damper 31, so that the damping oil in the upper and lower sealing chambers of the one-way damper 31 cannot flow, thereby locking the first piston rod 311, and preventing the door leaf 1 from rotating in the opposite direction to close the door;

[0053] When the cam 32 is in the closed position, the push rod 332 is in the closed position, and the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, and the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, and the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, so that the push rod 332 is in the closed position, The door leaf is automatically closed by rotating in the direction of rotation; during this process, the first piston rod 311 moves outward quickly and is quickly locked, and after the second piston rod 321 moves inward, the lock of the first piston rod 311 is released; the time difference is the time for the door leaf to stop in the open position and delay the closing; the hinge allows the door leaf to stay in the open state for a period of time after it is opened, giving people enough time to enter and exit; the door leaf does not need to be installed with a door closer separately, which reduces the use of door leaf installation accessories, saves installation costs, and makes the door leaf look simpler and more beautiful.

[0054] The one-way damper 31 includes a housing 314. The first piston rod 311 is rotatably disposed in a sealed cavity of the housing 314. The sealed cavity is filled with damping oil. A piston assembly 315 on the end of the first piston rod 311 divides the sealed cavity into an upper sealed cavity and a lower sealed cavity.

[0055] The piston assembly 315 includes an upper piston 3151 and a lower piston 3152 that cooperate with each other, the upper piston 3151 being rotatably arranged on the first piston rod 311, and the lower piston 3152 being fixedly arranged on the first piston rod 311; the connecting end of the first piston rod 311 for mounting the piston assembly 315 is a flat shaft, the middle of the lower piston 3152 is provided with a flat hole that matches the flat shaft, and the middle of the upper piston 3151 is provided with a circular hole, wherein the lower piston 3152 and the upper piston 3151 are respectively sleeved on the flat shaft through the flat hole and the circular hole; wherein the sealed cavity of the cylinder sleeve 21 of the shell is non-circular in shape, the outer contour of the lower piston 3152 is circular in shape, and the outer contour of the upper piston 3151 is a non-circular shape that matches the sealed cavity, so that when the piston rod is rotated, the lower piston 3152 rotates together with the first piston rod 311, and the upper piston 3151 rotates relative to the lower piston 3152;

[0056] The oil hole includes an oil inlet hole 31521 arranged on the lower piston 3152 and an oil outlet hole 31511 arranged on the upper piston 3151. When the first piston rod 311 drives the lower piston 3152 to rotate, the oil outlet hole 31511 and the oil inlet hole 31521 are staggered, and the oil hole is closed; after the first piston rod 311 is rotated in the opposite direction, the oil outlet hole 31511 and the oil inlet hole 31521 are arranged opposite to each other, and the oil hole is reopened, so that after the first piston rod 311 is compressed inwardly, the damping oil in the lower sealing chamber can enter the upper sealing chamber through the oil hole.

[0057] An annular groove 31512 for mounting a sealing ring 31513 is provided on the outer side wall of the upper piston 3151. The sealing ring 31513 is movably disposed in the annular groove 31512. A plurality of upper oil grooves 31514 are provided on one end of the upper piston 31511 near the upper sealing ring 31513. A plurality of lower oil grooves 31515 are provided on the bottom wall of the annular groove 31512. The plurality of upper oil grooves 31514 correspond to the plurality of lower oil grooves 31515 in a one-to-one manner.

[0058] The upper oil groove 31514 is connected to the upper sealed cavity, and the lower oil groove 31515 is connected to the lower sealed cavity;

[0059] The damping oil flows from the upper sealing chamber into the lower sealing chamber, driving the sealing ring 31513 to separate from the upper oil groove 31514; the upper oil groove 31514 is connected to the annular groove 31512, so that the damping oil in the upper sealing chamber can quickly pass through the upper oil groove 31514 and the lower oil groove 31515 into the lower sealing chamber; there is no damping effect;

[0060] When the damping oil flows from the lower sealing chamber into the upper sealing chamber, the sealing ring 31513 is driven to stick to the lower end opening of the upper oil groove 31514, blocking the upper oil groove 31514 and the annular groove 31512, so that the damping oil in the lower sealing chamber cannot enter the upper sealing chamber through the lower oil groove 31515 and the upper oil groove 31514, and can only enter the upper sealing chamber through the oil hole, thereby playing a damping role.

[0061] An oil gap 3141 is provided on the side wall of the bottom end of the shell 314. When the door is closed, the first piston rod 311 drives the piston assembly 315 to move inward. When the door is closed to a certain angle, the piston assembly 315 is opposite to the oil gap 3141, and the damping oil in the upper sealing chamber can quickly enter the lower sealing chamber through the oil gap 3141, so that the one-way damper 31 loses its damping effect, and the door can be closed quickly.

[0062] A positioning assembly 4 is provided between the spring sleeve 11 and the cylinder sleeve 21. The positioning assembly 4 includes a positioning disc spring 41 and a positioning member 42. The lower end surface of the positioning member 42 abuts against the positioning disc spring 41, and the upper end surface of the positioning member 42 is provided with four positioning protrusions 421 at intervals, wherein the four positioning protrusions 421 are evenly distributed on the upper end surface of the positioning member 42.

[0063] The lower end surface of the spring sleeve 11 is provided with four positioning grooves 112 corresponding to the four positioning protrusions 421 at intervals;

[0064] The positioning disc spring 41 drives the four positioning protrusions 421 of the positioning member 42 to cooperate with the corresponding positioning grooves 112 to position the door leaf 1 in the closed position or the open position; thus preventing the door leaf from closing or opening by itself and playing a positioning role.

[0065] The top end of the spring sleeve 11 is threadedly connected to an adjusting nut 113, wherein the upper end of the door closing spring 12 rests on the adjusting nut 113; by turning the adjusting nut 113, the preload force of the door closing spring 12 is changed, and the closing speed of the door leaf can be adjusted.

[0066] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A three-stage force-arbitrary stop delay buffer hinge, comprising a door leaf and a door frame leaf arranged to rotate relative to each other; its characteristics are: A spring sleeve is fixedly provided in the door leaf shaft sleeve, an oil cylinder sleeve is fixedly provided in the door frame leaf shaft sleeve, and a damping mechanism is provided in the oil cylinder sleeve; A closing spring is provided at one end of the spring sleeve, and a guide sleeve is provided at the other end. One end of the guide sleeve is fixed to the cylinder sleeve, and a pair of guide holes are longitudinally provided on the side wall of the other end. A pair of spiral grooves corresponding to the guide holes are provided on the side walls of the spring sleeve. A push rod is movably arranged in the guide sleeve, and a guide shaft on the push rod passes through the guide hole and is placed in the spiral groove; one end of the push rod abuts against the door closing spring, and the other end extends into the cylinder sleeve and cooperates with the damping mechanism; The damping mechanism includes a one-way damper and a two-way damper that are arranged opposite to each other, and a sliding member; The first piston rod of the one-way damper is sleeved with a first compression spring and connected to a linkage block, and the linkage block is obliquely provided with a linkage groove; One end of the second piston rod of the bidirectional damper is matched with the linkage groove through the linkage shaft, and the other end is sleeved with a second compression spring that drives the piston of the bidirectional damper to compress inward; One end of the sliding member abuts against the push rod, and the other end abuts against the linkage block; When rotating the door leaf, the spiral groove drives the guide shaft to drive the push rod to move back to the sliding part and compress the door closing spring; the first compression spring drives the first piston rod to drive the linkage block to move quickly toward the two-way damper, and the linkage shaft slides along the linkage groove, driving the first piston rod to rotate and closing the oil hole of the one-way damper; the second compression spring overcomes the resistance of the two-way damper and pushes the second piston rod to move slowly inward, so that the linkage shaft slides in the opposite direction along the linkage groove, driving the first piston rod to rotate in the opposite direction, and reopening the oil hole of the one-way damper.

2. The three-stage force arbitrary stop delay buffer hinge according to claim 1 is characterized by: The one-way damper comprises a housing, the first piston rod is rotatably disposed in a sealed cavity of the housing, and the sealed cavity is filled with damping oil; The piston assembly on the end of the first piston rod divides the sealed cavity into an upper sealed cavity and a lower sealed cavity; The piston assembly includes an upper piston and a lower piston that cooperate with each other, the upper piston is rotatably arranged on the first piston rod, and the lower piston is fixedly arranged on the first piston rod; The oil holes include an oil inlet hole provided on the lower piston and an oil outlet hole provided on the upper piston. When the first piston rod drives the lower piston to rotate, the oil outlet hole and the oil inlet hole are staggered, and the oil holes are closed.

3. The three-stage force arbitrary stop delay buffer hinge according to claim 2 is characterized by: An annular groove for mounting a sealing ring is provided on the outer side wall of the upper piston, and the sealing ring is movably arranged in the annular groove; a plurality of upper oil grooves are provided on one end of the upper piston close to the upper sealing ring, and a plurality of lower oil grooves are provided on the bottom wall of the annular groove; The upper oil groove is connected to the upper sealing cavity, and the lower oil groove is connected to the lower sealing cavity; The damping oil flows from the upper sealing chamber into the lower sealing chamber, driving the sealing ring to separate from the upper oil groove; and connecting the upper oil groove with the annular groove.

4. The three-stage force arbitrary stop delay buffer hinge according to claim 3 is characterized by: The upper oil troughs and the lower oil troughs are arranged in one-to-one correspondence.

5. The three-stage force arbitrary stop delay buffer hinge according to claim 4 is characterized by: An oil-passing notch is provided on the bottom side wall of the shell.

6. A three-stage force arbitrary stop delay buffer hinge according to claim 1, 2, 3, 4 or 5, characterized in that: A positioning assembly is provided between the spring sleeve and the cylinder sleeve, the positioning assembly comprising a positioning disc spring and a positioning member, the lower end face of the positioning member abuts against the positioning disc spring, and the upper end face of the positioning member is provided with four positioning protrusions at intervals, wherein the four positioning protrusions are evenly distributed on the upper end face of the positioning member; The lower end surface of the spring sleeve is provided with four positioning grooves corresponding to the four positioning protrusions at intervals; The positioning disc spring drives the four positioning protrusions of the positioning member to cooperate with the corresponding positioning grooves to position the door leaf at the door closing position or the door opening position.

7. The three-stage force arbitrary stop delay buffer hinge according to claim 6 is characterized by: The top end of the spring sleeve is threadedly connected with an adjusting nut, wherein the upper end of the door closing spring abuts against the adjusting nut.

8. The three-stage force arbitrary stop delay buffer hinge according to claim 7 is characterized by: A bearing is provided between the door leaf shaft sleeve and the door frame shaft sleeve.

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