A pressing and rebounding damping hinge

Abstract

The present invention discloses a push-rebound damping hinge, comprising an outer transmission arm, an inner transmission arm, and a rebound damping member. The two ends of the outer transmission arm are respectively connected to the cup head and the arm body. One end of the inner transmission arm is connected to the cup head and the other end is connected to the movable end of the rebound damping member. The fixed end of the rebound damping member is connected to the arm body. The first transmission member is rotatably arranged in the arm body. A protrusion is provided on the first transmission member or the cup head. When the cup head is pressed, it contacts the first transmission member through a boss. The locking structure is connected to the outer transmission arm. The first transmission member is used to unlock the locking structure. When the door body is pressed, the protrusion activates the first transmission member to unlock the locking structure. The rebound damping member drives the outer transmission arm and the inner transmission arm to rotate. Under the action of the joint rotation of the outer transmission arm and the inner transmission arm, the cup head rotates and opens. The structure of the present invention realizes that the hinge has a built-in push-rebound damping function, which is convenient for use with invisible doors or handleless doors.

Description

Technical Field

[0001] The present invention relates to the technical field of hinges, and in particular to a press-rebound damping hinge. Background Art

[0002] A hinge is a mechanical device used to connect two doors to a fixed wall, allowing relative rotation between them. Currently, most hinges widely used in furniture consist of a cup head, arm, and base, all connected in sequence. Because the deformation of the torsion spring during the hinge opening and closing process generates significant elastic force, a buffer device is added to the hinge base to provide a better cushioning effect during opening and closing, reducing collisions between the door and the cabinet body.

[0003] Among them, self-elastic furniture hinges are used in furniture for one-touch-open door panels. The door body does not need to be installed with handles. The simple design style has become a popular element in modern cabinets and furniture. The existing technology mostly adopts the method of adding a rebounder between the door body and the wall, which has high usage costs and complex installation.

[0004] Patent No. ZL2022221953981 discloses a hinge for movably supporting a furniture component relative to a furniture body and furniture. The hinge comprises: a first accessory for securing to the furniture body; a second accessory for securing to the furniture component, the first and second accessories being pivotally connected via at least one hinged rod; a spring device, by which the first and second accessories can move relative to each other over a range of pivot angles to a closed and / or open end position of the hinge; and a buffer device, by which the relative movement of the first and second accessories can be buffered. The buffer device is at least partially disposed within the first accessory and comprises a buffer housing and a piston rod movable relative to the buffer housing. The first accessory comprises, in cross section, a base slat and two side slats extending laterally from the base slat, the buffer device being disposed in the first accessory at an angle relative to the base slat. However, this hinge only has a buffering function and still requires a rebounder to achieve a door body that rebounds upon being pressed.

[0005] Patent No. ZL2020228340749 discloses a plastic rebound hinge for furniture, comprising a hinge structure placed between a cabinet door and a cabinet body, wherein the hinge structure comprises a hinge cup, and the hinge cup is connected to one end of a connecting plate by a U-shaped nail, the other end of the connecting plate is connected to one end of a hinge arm by a first straight nail, and the other end of the connecting plate is also provided with a buffer device. The utility model is such that when the cabinet door and the cabinet body form a ninety-degree angle, the hinge as a whole is stressed by the cabinet body, the cabinet door is squeezed, the rebounder contacts the pressure and pops out, thereby allowing the cabinet door to open. During daily use of the cabinet body, the hinge has sufficient load-bearing capacity and impact toughness to prevent the hinge arm and hinge cup from being damaged, thereby increasing the overall service life. The hinge is excellent in stability and is very durable. However, the hinge simply sets the rebounder on the hinge without adjusting the internal structure of the hinge, which greatly limits the usage scenarios and the service life of the plastic hinge is relatively low.

[0006] Therefore, in some cases where there are hidden doors or cabinet doors without handles, the existing hinges cannot meet the usage requirements, and further improvements are needed to the existing hinges. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a push-rebound damping hinge.

[0008] In order to solve the above technical problems, the present invention provides a push-rebound damping hinge, comprising a base that can be fixed to a wall, a cup head that can rotate relative to the wall and can be fixed to a door body, an arm connected to the base, and a plurality of connecting pins, and further comprising:

[0009] An outer transmission arm, an inner transmission arm, and a rebound damping member, wherein both ends of the outer transmission arm are rotatably connected to the cup head and the arm body, respectively; one end of the inner transmission arm is rotatably connected to the cup head, and the other end is connected to the movable end of the rebound damping member; and the fixed end of the rebound damping member is connected to the arm body;

[0010] a first transmission member and a locking structure, wherein the first transmission member is rotatably disposed within the arm body, a protrusion is provided on the first transmission member or the cup head, and when the cup head is pressed, the cup head and the first transmission member contact each other through the protrusion, the locking structure is connected to the outer transmission arm, and the first transmission member is used to unlock the locking structure;

[0011] The door body is pressed, and the protrusion activates the first transmission member to unlock the locking structure. The rebound damping member drives the outer transmission arm and the inner transmission arm to rotate. Under the action of the joint rotation of the outer transmission arm and the inner transmission arm, the cup head rotates and opens.

[0012] Furthermore, it also includes a U-shaped nail, and the locking structure includes a first torsion spring and a second transmission member. The first arm of the U-shaped nail connects the cup head and the first connecting hole of the outer transmission arm, and the second arm of the U-shaped nail connects the cup head and the inner transmission arm. The second connecting hole of the outer transmission arm is rotatably set on the arm body through the first connecting nail, the first torsion arm of the first torsion spring is fixedly set in the outer transmission arm, and the second transmission member is rotatably set in the arm body, and the rotation amplitude and reset of the second transmission member are controlled by the reset member.

[0013] Furthermore, the hinge includes a second torsion spring, the first torsion arm of which is fixedly mounted within the outer transmission arm. The second torsion arm of the second torsion spring abuts the lower end of the second torsion arm of the first torsion spring, thereby buffering the elastic force of the second torsion spring in restoring its deformation. The second torsion spring cushions the deformation of the first torsion spring when the cup head is opened, preventing excessive force from contacting the rotating shaft, resulting in noise and impact, and thus extending the life of the hinge.

[0014] Furthermore, the inner transmission arm is rotatably arranged in the arm body through a fourth connecting pin, and a second roller sleeve is provided on the inner transmission arm, and the second roller sleeve rotates to support the second torsion arm of the first torsion spring.

[0015] Furthermore, the first transmission member has an extension portion, the second transmission member is provided with a third roller sleeve and a boss, the second torsion arm of the first torsion spring is hung on the third roller sleeve, and the extension portion is in contact with the boss.

[0016] Furthermore, the boss includes a first boss, a second boss and a third boss. When the cup head pops open, the extension portion contacts the first boss, the second boss and the third boss in sequence.

[0017] Furthermore, the reset member is a tension spring, one end of the tension spring is arranged in the arm body through a third connecting pin, and the other end of the tension spring is connected to the second transmission member.

[0018] Furthermore, the protrusion is a rebound screw, which is adjustably arranged on the top of the cup head. The rebound screw is used to adjust the closing position of the door body to offset the processing error between the door body and the wall or the hinge installation error.

[0019] Furthermore, the rebound damping member includes an oil pipe and a core shaft inserted into one end of the oil pipe. The other end of the oil pipe is connected to the inner strip through a sixth connecting pin. A second compression spring is provided in the oil pipe. The second compression spring keeps the core shaft in an outwardly extended state at all times. The core shaft is rotatably connected to the inner transmission arm.

[0020] Furthermore, the device further includes a balancing member and an inner bar. The balancing member is adjustably mounted on the top wall of the arm body via a first balancing shaft and a second balancing shaft at each end. The balancing member is connected to the arm body via a first adjusting screw, which is connected to a slot in the balancing member. Depending on the actual installation situation, the balancing member is adjusted to change the angle between the base and the arm body, thereby adjusting the door opening angle between the wall and the door body.

[0021] The implementation of the present invention has the following beneficial effects:

[0022] The inner transmission arm, tension spring, rebound damping member, first transmission member and second transmission member cooperate with each other to increase the elastic force of the second compression spring in the rebound damping member so that the door body can be pushed open. The hinge structure realizes its own push-and-rebound function, instead of being used with a conventional rebounder. There is no need to install a rebounder, which makes it easy to use with invisible doors or handleless doors. At the same time, it also has a buffering function. The second torsion spring offsets part of the elastic force generated by the first torsion spring during deformation, making the hinge more stable and quiet, and extending its service life.

[0023] The novel and compact structure, stable performance, low production cost and high durability are conducive to improving the overall quality and market competitiveness of the hinge. Compared with traditional hinges, the door body enters the buffer state earlier during the closing process, improving the customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0025] Figure 2 It is a structural cross-sectional view of the present invention;

[0026] Figure 3 This is a cross-sectional view of the structure of the connecting pins and the rolling sleeves in the arm body of the present invention;

[0027] Figure 4 1 is a schematic structural diagram of the cup head of the present invention;

[0028] Figure 5 Schematic diagram of the internal structure of the outer transmission arm of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the inner transmission arm of the present invention;

[0030] Figure 7 is a schematic structural diagram of the first transmission member of the present invention;

[0031] Figure 8 is a structural schematic diagram of the second transmission member of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the cross section of the arm body of the present invention;

[0033] Figure 10 1 is a schematic structural diagram of a cross section of a rebound damping member of the present invention;

[0034] Figure 11 This is a schematic diagram of the structure of the base and the inner strip in the present invention;

[0035] Figure 12 This is a schematic diagram of the overall structure of the hinge of the present invention in the open state;

[0036] Figure 13 This is a schematic diagram of the structure of the inner part of the arm body in the hinge open state of the present invention Figure 1 ;

[0037] Figure 14 This is a schematic diagram of the structure of the inner part of the arm body in the hinge open state of the present invention Figure 2 ;

[0038] Figure 15 This is a schematic diagram of the overall structure of the hinge in the closed state of the present invention;

[0039] Figure 16 This is a schematic diagram of the structure of the inner part of the arm body in the hinge closed state of the present invention Figure 1 ;

[0040] Figure 17 This is a schematic diagram of the structure of the inner part of the arm body in the hinge closed state of the present invention Figure 2 ;

[0041] Figure 18 This is a schematic diagram of the overall structure of the hinge of the present invention in an open state;

[0042] Figure 19 This is a schematic diagram of the structure of the inner part of the arm body in the hinge open state of the present invention Figure 1 ;

[0043] Figure 20 This is a schematic diagram of the structure of the inner part of the arm body in the hinge open state of the present invention Figure 2 ;

[0044] In the picture:

[0045] 10-cup head, 101-rebound screw, 1011-step, 102-first compression spring, 20-arm body, 201-top cover, 201A-through hole, 202-first connecting nail, 203-second connecting nail, 204-third connecting nail, 205-fourth connecting nail, 206-fifth connecting nail, 207-sixth connecting nail, 208-balance piece, 209-first balance shaft, 2010-second balance shaft, 2011-inner bar, 2012-first adjusting screw, 2013-second adjusting screw, 30-outer transmission arm, 301-limiting protrusion, 40- U-shaped nail, 401-first support arm, 402-second support arm, 50-inner transmission arm, 501-second roller sleeve, 60-first torsion spring, 70-second torsion spring, 80-first transmission member, 801-first roller sleeve, 802-extension part, 90-second transmission member, 901-third roller sleeve, 902-first boss, 903-second boss, 904-third boss, 905-first clamping position, 100-tension spring, 11-rebound damping member, 111-oil pipe, 112-core shaft, 113-second compression spring, 12-base, 121-pressing member, 13-rotating shaft. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0047] like Figure 1-12 As shown, a push-rebound damping hinge includes a cup head 10, an arm body 20, a base 12, an outer transmission arm 30, an inner transmission arm 50, a first torsion spring 60, a second torsion spring 70, a top cover 201, a first transmission member 80, a second transmission member 90, a tension spring 100, a rebound damping member 11, a first balancing shaft 209, a second balancing shaft 2010, an inner strip 2011, a balancing member 208, a first adjusting screw 2012, a second adjusting screw 2013, and a pressing member 121.

[0048] like Figure 2-4 As shown, the top of the cup head 10 is adjustable and is provided with a rebound screw 101. A first compression spring 102 is provided between the step 1011 of the rebound screw 101 and the cup head 10. By adjusting the rebound screw 101, the distance between the cup head 10 and the first roller sleeve 801 in the closed state can be adjusted, thereby adjusting the door closing angle. The cup head 10 is rotatably connected to the first connecting holes of the outer transmission arm 30 and the inner transmission arm 50 through the U-shaped nail 40. The first arm 401 of the U-shaped nail 40 connects the cup head 10 and the outer transmission arm 30, and the second arm 402 of the U-shaped nail 40 connects the cup head 10 and the inner transmission arm 50.

[0049] like Figure 2-6As shown, the second connection hole of the outer transmission arm 30 is rotatably set on the arm body 20 through the first connection pin 202. The inner wall of the outer transmission arm 30 is symmetrically provided with a limiting protrusion 301. The first torsion arm of the first torsion spring 60 is fixedly set in the outer transmission arm 30 through the limiting protrusion 301. The first torsion arm of the second torsion spring 70 is fixedly set in the outer transmission arm 30, and the second torsion arm of the second torsion spring 70 is against the second torsion arm of the first torsion spring 60. The inner transmission arm 50 is rotatably set in the arm body 20 through the fourth connection pin 205. The inner transmission arm 50 is in the shape of a "7". The inner transmission arm 50 is provided with a second roller 501, which rotatably supports the second torsion arm of the first torsion spring 60.

[0050] like Figure 1 、 2 As shown in Figures 3, 7 and 8, the top cover 201 is fixedly arranged at the front end of the upper surface of the arm body 20. The front end of the top cover 201 has a through hole 201A. When the door rebounds to open, the rebound screw 101 enters the through hole 201A. The first transmission member 80 is rotatably arranged in the top cover 201 through the second connecting pin 203. A fifth connecting pin 206 is also provided in the arm body 20. When the cup head 10 is in the rebound state, the fifth connecting pin 206 touches the second transmission member 90. A first roller sleeve 801 is provided on the first transmission member 80, and the rebound screw 101 pushes the first roller sleeve 801 to rotate the first transmission member 80. The extension portion 802 of the first transmission member 80 conflicts with the second transmission member 90. The second transmission member 90 is provided with a third roller sleeve 901 and a first boss 902, a second boss 903, and a third boss 904. The second torsion arm of the first torsion spring 60 is hung on the third roller sleeve 901 of the second transmission member 90. When the cup head 10 bounces open, the extension portion 802 of the first transmission member 80 contacts the first boss 902, the second boss 903, and the third boss 904 in sequence. The first boss 902, the second boss 903, and the third boss 904 respectively play the roles of starting, speeding up, and accelerating. One end of the tension spring 100 is set in the arm body 20 through the third connecting pin 204, and the other end of the tension spring 100 is connected to the second transmission member 90. The inner transmission arm 50, the tension spring 100, the rebound damping member 11, the first transmission member 80 and the second transmission member 90 cooperate with each other to structurally realize the hinge's own press-rebound function, rather than the conventional use with a rebounder. There is no need to install a rebounder, which makes it easy to use with invisible doors or handleless doors. At the same time, it also has a buffering function. The second torsion spring 70 offsets part of the elastic force generated by the first torsion spring 60 during deformation, making the hinge more stable and quiet, thereby extending its service life.

[0051] like Figure 9-11As shown, the rebound damping member 11 includes an oil pipe 111 and a core shaft 112 inserted into one end of the oil pipe 111. The other end of the oil pipe 111 is connected to the inner bar 2011 via a sixth connecting pin 207. A second compression spring 113 is provided in the oil pipe 111. The second compression spring 113 keeps the core shaft 112 in an outwardly extended state. The core shaft 112 is rotatably connected to the inner transmission arm 50. The balance member 208 is adjustably provided on the top wall of the arm body 20 via a first balance shaft 209 and a second balance shaft 2010 at both ends. The balance member 208 is connected to the arm body 20 via a first adjusting screw 2012. The first adjusting screw 2012 is slotted into the balance member 208. The inner bar 2011 is connected to the balance member 208 via a second adjusting screw 2013. The base 12 is fastened to the inner bar 2011 via a pressing member 121.

[0052] The working principle of the embodiment of the present invention is as follows:

[0053] like Figure 12-15 As shown, the pressed rebound damping hinge is in a fully open state, the door body is manually closed, the door body rotates around the fixed wall, the second arm 402 of the U-shaped nail 40 deviates from the top dead center, and after the cup head 10 rotates about 35 degrees, the first torsion spring 60 recovers its deformation, generates elastic force, drives the U-shaped nail 40 to rotate, the outer transmission arm 30 rotates, the inner transmission arm 50 rotates clockwise, the cup head 10 rotates, the core shaft 112 overcomes the thrust of the second compression spring 113 and slides inward, and the rebound damping member 11 generates resistance; at the same time, the first torsion arm of the first torsion spring 60 is always located at the outer transmission arm 3 0, the second torsion arm of the first torsion spring 60 rotates at a small angle and abuts against the third rolling sleeve 901, the second rolling sleeve 501 disengages the second torsion arm of the first torsion spring 60, the first torsion arm of the second torsion spring 70 is always located in the outer transmission arm 30, the second torsion arm of the second torsion spring 70 always abuts against the second torsion arm of the first torsion spring 60, and the door body automatically closes slowly until the rebound screw 101 abuts against the first rolling sleeve 801, and the second torsion arm of the first torsion spring 60 abuts against the third rolling sleeve 901, so that the rebound damping member 11 is in a relatively locked state, and the door body is in a completely closed state.

[0054] like Figure 15-18As shown, the press-rebound damping hinge is in a fully closed state, the door body is pressed inward, and the door body rotates inward at a small angle around the fixed wall. The rebound screw 101 pushes the first roller sleeve 801 inward, the first transmission member 80 rotates, the first transmission member 80 shifts the second transmission member 90, the second transmission member 90 overcomes the tension of the tension spring 100 and rotates, the second torsion arm of the first torsion spring 60 separates from the third roller sleeve 901 and rotates until it conflicts with the rotating shaft 13, the first torsion spring 60 restores its deformation, reduces the elastic force, and the second torsion spring 70 generates resistance, which is in conflict with the elastic part of the first torsion spring 60. The rotation of the second torsion spring 60 and the second torsion spring 60 are balanced, and the cup head 10 stops rotating when the second compression spring 113 and the first torsion spring 60 are balanced.

[0055] like Figure 18-20 As shown, the pressed rebound damping hinge is in the pop-open state, the door body is manually rotated outward, the cup head 10 rotates, the U-shaped nail 40 rotates, the outer transmission arm 30 rotates, the inner transmission arm 50 rotates, and the second roller sleeve 501 lifts the second torsion arm of the first torsion spring 60 until the second torsion arm of the first torsion spring 60 exceeds the third roller sleeve 901. The second transmission member 90 rotates under the action of the tension of the tension spring 100, and the second transmission member 90 moves to the first locking position 905 and contacts the end of the second torsion arm of the first torsion spring 60; at the same time, the first torsion spring 60 deforms and generates resistance, the second torsion spring 70 recovers the deformation and generates elastic force, the second compression spring 113 generates elastic force, the core shaft 112 slides outward, and the first transmission member 80 rotates under the action of the second transmission member 90. After the second arm 402 of the U-shaped nail 40 rotates to contact the limiting curved surface of the outer transmission arm 30, the door body is in a fully open state.

[0056] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A push-rebound damping hinge, comprising a base (12) that can be fixed to a wall, a cup head (10) that can rotate relative to the wall and can be fixed to a door body, an arm body (20) connected to the base (12), and a plurality of connecting pins, characterized in that: Also includes: An outer transmission arm (30), an inner transmission arm (50) and a rebound damping member (11), wherein two ends of the outer transmission arm (30) are rotatably connected to the cup head (10) and the arm body (20), one end of the inner transmission arm (50) is rotatably connected to the cup head (10), and the other end is connected to the movable end of the rebound damping member (11), and the fixed end of the rebound damping member (11) is connected to the arm body (20); A first transmission member (80) and a locking structure, wherein the first transmission member (80) is rotatably disposed in the arm body (20), a protrusion is disposed on the first transmission member (80) or the cup head (10), and when the cup head (10) is pressed, it contacts the first transmission member (80) through the protrusion, and the locking structure is connected to the outer transmission arm (30), and the locking structure includes a first torsion spring (60) and a second transmission member (90), wherein the first torsion arm of the first torsion spring (60) is fixedly disposed in the outer transmission arm (30), and the second transmission member (90) is rotatably disposed in the arm body (20), and the rotation amplitude and reset of the second transmission member (90) are controlled by a reset member, and the first transmission member (80) is used to unlock the locking structure; The door body is pressed, and the protrusion activates the first transmission member (80) to unlock the locking structure, and the rebound damping member (11) drives the outer transmission arm (30) and the inner transmission arm (50) to rotate. Under the action of the joint rotation of the outer transmission arm (30) and the inner transmission arm (50), the cup head (10) rotates and opens.

2. The push-rebound damping hinge according to claim 1, characterized in that: It also includes a U-shaped nail (40), wherein a first arm (401) of the U-shaped nail (40) connects the cup head (10) and the first connecting hole of the outer transmission arm (30), a second arm (402) of the U-shaped nail (40) connects the cup head (10) and the inner transmission arm (50), and the second connecting hole of the outer transmission arm (30) is rotatably arranged on the arm body (20) through the first connecting nail (202).

3. The push-rebound damping hinge according to claim 2, characterized in that: It also includes a second torsion spring (70), wherein the first torsion arm of the second torsion spring (70) is fixedly arranged in the outer transmission arm (30), and the second torsion arm of the second torsion spring (70) is against the lower end of the second torsion arm of the first torsion spring (60), so as to buffer the elastic force of the second torsion spring (70) to restore the deformation.

4. The push-rebound damping hinge according to claim 2, characterized in that: The inner transmission arm (50) is rotatably arranged in the arm body (20) via a fourth connecting pin (205). A second roller sleeve (501) is provided on the inner transmission arm (50), and the second roller sleeve (501) rotatably supports the second torsion arm of the first torsion spring (60).

5. The push-rebound damping hinge according to claim 2, characterized in that: The first transmission member (80) has an extension portion (802), the second transmission member (90) is provided with a third roller sleeve (901) and a boss, the second torsion arm of the first torsion spring (60) is hung on the third roller sleeve (901), and the extension portion (802) is in contact with the boss.

6. The push-rebound damping hinge according to claim 5, characterized in that: The bosses include a first boss (902), a second boss (903), and a third boss (904); when the cup head (10) pops open, the extension portion (802) contacts the first boss (902), the second boss (903), and the third boss (904) in sequence.

7. The push-rebound damping hinge according to claim 2, characterized in that: The reset member is a tension spring (100), one end of the tension spring (100) is arranged in the arm body (20) through a third connecting pin (204), and the other end of the tension spring (100) is connected to the second transmission member (90).

8. The push-rebound damping hinge according to claim 1, characterized in that: The protrusion is a rebound screw (101), and the rebound screw (101) is adjustably arranged on the top of the cup head (10).

9. The push-rebound damping hinge according to claim 1, characterized in that: The rebound damping member (11) includes an oil pipe (111) and a core shaft (112) plugged into one end of the oil pipe (111); the other end of the oil pipe (111) is connected to the inner strip (2011) via a sixth connecting pin (207); a second compression spring (113) is provided in the oil pipe (111); the second compression spring (113) keeps the core shaft (112) in an outwardly extending state at all times; and the core shaft (112) is rotatably connected to the inner transmission arm (50).

10. The push-rebound damping hinge according to claim 1, characterized in that: The invention also includes a balancing member (208) and an inner strip (2011), wherein the balancing member (208) is adjustably arranged on the inner top wall of the arm body (20) through a first balancing shaft (209) and a second balancing shaft (2010) at both ends, and the balancing member (208) is connected to the arm body (20) through a first adjusting screw (2012), and the first adjusting screw (2012) is connected to the balancing member (208) through a slot.

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