Buffer structure for hinge and buffer hinge

Abstract

The present invention provides a buffer structure for hinges and a buffer hinge, comprising a first fixed end, a hinge arm, and a linkage member, wherein the hinge arm comprises a first transmission rod and a second transmission rod, wherein the first fixed end is rotatably connected to one end of the first transmission rod and one end of the second transmission rod respectively, and the linkage member is rotatably connected to the other end of the first transmission rod and the other end of the second transmission rod respectively; the buffer structure for hinges also comprises a buffer member, wherein the first fixed end has a first relative position and a second relative position relative to the hinge arm; the buffer member is located on the first transmission rod, and when the first fixed end rotates from the first relative position to the second relative position, the buffer member presses against the second transmission rod or the first fixed end; or the buffer member is located on the first fixed end, and when the first fixed end rotates from the first relative position to the second relative position, the buffer member presses against the first transmission rod or the second transmission rod. The present invention adds a buffer structure to enable the hinge structure to have a buffer function.

Description

Technical Field

[0001] The invention relates to the field of door hinges, in particular to a buffer structure for hinges and a buffer hinge using the structure. Background Art

[0002] At present, the buffer hinges used in furniture and other door bodies adopt dampers and springs to form a damping structure to achieve a slow closing effect of the door, avoiding the collision of the cabinet doors of furniture products with the cabinet body during the closing process. Even if the user closes the door forcefully, the buffer hinge can ensure that the cabinet door closes gently, ensuring a quiet and comfortable home environment and avoiding damage to the door body.

[0003] The existing buffer hinge mainly adopts a two-stage travel structure consisting of a reset travel section and a free travel section; when the buffer hinge is in the reset travel section, the buffer hinge can provide a closing force without external force, so that the door body closes automatically; when the buffer hinge is in the free travel section, the buffer hinge cannot close automatically. At this time, there is no external force at any position of the door body in the free travel section, so it is convenient for users to open the door and take out items.

[0004] However, in actual use, users often use great force to open the door, causing the door to directly enter the free travel section from the closed state through the reset travel section. Since the free travel section has no damping effect, the door will continue to open due to inertia, and when it reaches the maximum opening range, it will swing due to the structural limitations of the door body, causing great pressure on the connection between the cabinet body, door body and hinges. Long-term use will cause the door body and hinges to detach and the hinges to be damaged. Summary of the invention

[0005] The present invention provides a buffer structure for a hinge, in particular a hinge with a buffer function when in an open state, so as to at least solve the problem of lack of buffer when a door body in a free travel section is opened in the prior art.

[0006] The present invention provides a buffer structure for a hinge, comprising a first fixed end, a hinge arm, and a linkage member, wherein the hinge arm comprises a first transmission rod and a second transmission rod, wherein the first fixed end is rotatably connected to one end of the first transmission rod and one end of the second transmission rod respectively, and the linkage member is rotatably connected to the other end of the first transmission rod and the other end of the second transmission rod respectively; the buffer structure for the hinge also comprises a buffer member, wherein the first fixed end has a first relative position and a second relative position relative to the hinge arm;

[0007] The buffer is located on the first transmission rod, and when the first fixed end rotates from the first relative position to the second relative position, the buffer is pressed against the second transmission rod or the first fixed end; or

[0008] The buffer is located on the first fixed end. When the first fixed end rotates from the first relative position to the second relative position, the buffer is pressed against the first transmission rod or the second transmission rod.

[0009] Furthermore, the buffer member is provided with an arc-shaped buffer surface;

[0010] The buffer is located on the first transmission rod, and when the first fixed end rotates from the first relative position to the second relative position, the pressing contact position between the buffer and the second transmission rod or the first fixed end moves along the arc of the arc-shaped contact surface; or

[0011] The buffer is located on the first fixed end. When the first fixed end rotates from the first relative position to the second relative position, the pressing contact position between the arcuate buffer surface of the buffer and the first transmission rod or the second transmission rod moves along the arc of the arcuate contact surface.

[0012] Furthermore, the buffer component has an arc-shaped sliding groove or an arc-shaped protrusion on the arc-shaped buffer surface.

[0013] Furthermore, the buffer component is an elastic plastic component.

[0014] The present invention also discloses a buffer hinge using the buffer structure for hinges, wherein the linkage member is a second fixed end, and the buffer hinge further comprises a reset structure, wherein the first fixed end has a closed position and an open position relative to the second fixed end, the first fixed end and the second fixed end are close to each other in the closed position, and are separated in the open position;

[0015] The first fixed end is provided with at least a first travel section and a second travel section in sequence between the closed position and the open position; when the first fixed end is in the first travel section, the reset structure can drive the first fixed end to enter the closed position;

[0016] When the first fixed end rotates from the first relative position to the second relative position, the first fixed end is located in the second stroke section.

[0017] Furthermore, the reset structure includes a torsion spring, one end of which is transmission-connected to the hinge arm, and the other end of which is transmission-connected to the first fixed end or the second fixed end. When the first fixed end is in the first stroke section, the torsion spring can drive the first fixed end to enter a closed position.

[0018] Furthermore, the reset structure also includes a damper, which is installed on the first fixed end or the second fixed end, and the hinge arm is transmission-connected to one end of the damper. When the first fixed end is in the first stroke section, if the first fixed end and the second fixed end move toward the closed position, the hinge arm compresses the damper.

[0019] Furthermore, the damper is a hydraulic cylinder.

[0020] Furthermore, the first transmission rod is connected to the first fixed end relative to the second fixed end via a rotating shaft, and the second transmission rod is connected to the first fixed end relative to the second fixed end via a rotating shaft.

[0021] Furthermore, the second fixed end is a shell, and the first fixed end is a hinge cup.

[0022] Compared with the prior art, the buffer structure of the present invention utilizes a buffer component, so that when the first fixed end and the hinge arm move to a second relative position between the first relative position, a buffer effect is provided through the pressing state of the buffer component, thereby reducing the free swing amplitude of the door body and avoiding damage to the buffer hinge and the door body. The present invention has the advantages of simple structure and safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the state of the buffer hinge at the beginning of the second stroke in the first aspect of the embodiment of the present invention;

[0024] Figure 2 It is an enlarged schematic diagram of the state of the buffer hinge at the beginning of the second stroke of the first aspect of the embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the state of the buffer hinge at the end of the second stroke in the first aspect of the embodiment of the present invention;

[0026] Figure 4 It is an enlarged schematic diagram of the state of the buffer hinge at the end of the second stroke in the first aspect of the embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the state of the buffer hinge at the beginning of the second stroke in the second aspect of an embodiment of the present invention;

[0028] Figure 6 It is an enlarged schematic diagram of the state of the buffer hinge at the beginning of the second stroke in the second aspect of the embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the state of the buffer hinge at the end of the second stroke in the second aspect of the embodiment of the present invention

[0030] Figure 8 This is an enlarged schematic diagram of the state of the buffer hinge at the end of the second stroke in the second aspect of the embodiment of the present invention;

[0031] Fig. 9 This is a schematic diagram of an explosion of a buffer hinge according to a second aspect of an embodiment of the present invention;

[0032] Fig.10It is a schematic structural diagram of a buffer hinge with a damper according to the first aspect of an embodiment of the present invention.

[0033] 1. Second fixed end; 2. First fixed end; 3. First transmission rod; 4. Second transmission rod; 5. Torsion spring; 61. First rotating shaft; 62. Second rotating shaft; 63. First pin shaft; 64. Second pin shaft; 7. Damper; 81. Buffer member; 82. Pressing surface. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only embodiments of a part of the present invention, rather than all embodiments.

[0035] The embodiment of the present invention provides a buffer structure for a hinge, such as Figure 1-Figure 10 As shown, it includes a first fixed end 2, a hinge arm, and a linkage member, the hinge arm includes a first transmission rod 3 and a second transmission rod 4, the first fixed end 2 is rotatably connected to one end of the first transmission rod 3 and one end of the second transmission rod 4, respectively, and the linkage member is rotatably connected to the other end of the first transmission rod 3 and the other end of the second transmission rod 4, respectively; the hinge buffer structure also includes a buffer member 81, and the first fixed end 2 has a first relative position and a second relative position relative to the hinge arm;

[0036] The buffer member 81 is located on the first transmission rod 3, and when the first fixed end 2 rotates from the first relative position to the second relative position, the buffer member 81 presses against the second transmission rod 4 or the first fixed end 2; or

[0037] The buffer member 81 is located on the first fixed end 2 . When the first fixed end 2 rotates from the first relative position to the second relative position, the buffer member 81 presses against the first transmission rod 3 or the second transmission rod 4 .

[0038] Optional, such as Figure 1-Figure 10 As shown, the buffer member 81 is provided with an arc-shaped buffer surface;

[0039] The buffer member 81 is located on the first transmission rod 3, and when the first fixed end 2 rotates from the first relative position to the second relative position, the pressing contact position between the buffer member 81 and the second transmission rod 4 or the first fixed end 2 moves along the arc of the arc-shaped contact surface; or

[0040] The buffer member 81 is located on the first fixed end 2. When the first fixed end 2 rotates from the first relative position to the second relative position, the pressing contact position between the arcuate buffer surface of the buffer member 81 and the first transmission rod 3 or the second transmission rod 4 moves along the arc of the arcuate contact surface.

[0041] In particular, such as Figure 1-Figure 10 As shown, the buffer member 81 has an arc-shaped sliding groove or an arc-shaped protrusion on the arc-shaped buffer surface.

[0042] Optionally, the buffer component 81 is an elastic plastic component.

[0043] The present invention also discloses a buffer hinge using the buffer structure for hinges, such as Figure 1-Figure 10 As shown, the linkage is the second fixed end 1, the buffer hinge also includes a reset structure, the first fixed end 2 has a closed position and an open position relative to the second fixed end 1, the first fixed end 2 and the second fixed end 1 are close to each other in the closed position, and the first fixed end 2 and the second fixed end 1 are separated in the open position;

[0044] The first fixed end 2 is provided with at least a first travel section and a second travel section in sequence between the closed position and the open position; when the first fixed end 2 is in the first travel section, the reset structure can drive the first fixed end 2 to enter the closed position;

[0045] When the first fixed end 2 rotates from the first relative position to the second relative position, the first fixed end 2 is located in the second stroke section.

[0046] When the buffer hinge moves from the open position to the closed position, the first fixed end 2 and the second fixed end 1 gradually approach each other. The first fixed end 2 and the second fixed end 1 can be fixed to the cabinet body and the door body respectively.

[0047] In the first stroke section, without the action of external force, the reset structure can drive the buffer hinge to move toward the closed position, and at this time, the first buffer member 81 and the second buffer member 81 are not in contact with each other.

[0048] In the second stroke section, in the absence of external force, the reset structure does not drive the buffer hinge to move to the closed position. At this time, the first buffer member 81 and the second buffer member 81 abut against each other to provide friction, thereby achieving the damping effect of the buffer hinge in the second stroke section and reducing the swing amplitude during the door opening process.

[0049] It should be noted that the first stroke segment and the second stroke segment referred to in the embodiment of the present invention are both a continuous stroke state during the transition of the first fixed end 2 from the closed position to the open position, rather than a single fixed position relationship. During the transition from the closed position to the open position, the first fixed end 2 will pass through the first stroke segment and the second stroke segment in sequence.

[0050] The buffer hinge of the embodiment of the present invention solves the problem that the door body is easily swayed when the hinge in the prior art is opened, thereby preventing the cabinet doors of furniture and other products from swaying due to excessive external force during the closing process, colliding with the cabinet body, damaging the cabinet body and the door body, causing unnecessary losses, and ensuring a quiet and comfortable home environment.

[0051] Optionally, a third stroke section may be provided between the first stroke section and the second stroke section, and the reset structure in the third stroke section may drive the first fixed end 2 into a closed position and the first buffer member 81 and the second buffer member 81 abut against each other, or the reset structure in the third stroke section may not drive the first fixed end 2 into a closed position; and the first buffer member 81 and the second buffer member 81 do not abut against each other.

[0052] In the embodiment of the present invention, a buffer structure is added to the hinge, and the abutment between the first buffer member 81 and the second buffer member 81 is utilized to make the hinge of the door body have a damping effect in the second stroke section, thereby slowing down the free swing of the door body and avoiding damage to the buffer hinge and the door body. The embodiment of the present invention has the advantages of simple structure and safe use.

[0053] Optionally, the reset structure includes a torsion spring 5, one end of which is transmission-connected to the hinge arm, and the other end of which is transmission-connected to the first fixed end 2 or the second fixed end 1. When the first fixed end 2 is in the first stroke section, the torsion spring 5 can drive the first fixed end 2 to enter a closed position.

[0054] In particular, such as Fig.10 As shown, the reset structure also includes a damper 7, which is installed on the first fixed end 2 or the second fixed end 1, and the hinge arm is transmission-connected to one end of the damper 7. When the first fixed end 2 is in the first stroke section, if the first fixed end 2 and the second fixed end 1 move toward the closed position, the hinge arm compresses the damper 7.

[0055] Particularly, the damper 7 is a hydraulic cylinder.

[0056] The damper 7 is a hydraulic cylinder, the second transmission rod 4 presses against one end of the torsion spring 5, and the other end of the torsion spring 5 is hooked on the second fixed end 1, which can drive the first fixed end 2 to enter a closed position relative to the second fixed end 1.

[0057] Optionally, the first transmission rod 3 is connected to the first fixed end 2 relative to the second fixed end 1 via a rotating shaft, and the second transmission rod 4 is connected to the first fixed end 2 relative to the second fixed end 1 via a rotating shaft.

[0058] Among them, the first transmission rod 3, the second transmission rod 4 and the hinge cup are rotatably connected using the first pin 63 and the second pin 64; the first transmission rod 3, the second transmission rod 4 and the housing are rotatably connected using the first rotation shaft 61 and the second rotation shaft 62.

[0059] Optionally, the first fixed end 2 is a shell, and the second fixed end 1 is a hinge cup.

[0060] The outer shell is used to be fixed to the cabinet body, and the hinge cup is used to be fixed to the door body.

[0061] The embodiments of the present invention specifically describe the buffer hinge and disclose optional solutions of the buffer hinge from the following two aspects.

[0062] The buffer hinge of the first aspect of the embodiment of the present invention may adopt the following structure:

[0063] In particular, such as Figure 1-Figure 4 As shown, the buffer member 81 is installed on the first transmission rod 3 or the hinge cup through the rotating shaft between the first transmission rod 3 and the hinge cup, and the second transmission rod 4 is provided with a pressing surface 82 near the buffer member 81. In the second stroke section, the pressing surface 82 abuts against the buffer member 81.

[0064] In particular, the buffer member 81 is provided with an arc-shaped groove near the second transmission rod 4. At each position in the second stroke segment, the pressing surface 82 abuts against at least one point on the arc-shaped groove. During the movement from one end of the second stroke segment to the other end of the second stroke segment, the abutting position between the pressing surface 82 and the arc-shaped groove moves along the arc of the arc-shaped groove.

[0065] Among them, Fig.10 As shown, in this embodiment, only the torsion spring 5 can be used as the reset member, or the torsion spring 5 and the damper 7 can be used simultaneously to realize the reset function; the buffer member 81 is installed on the first pin shaft 63, and the buffer member 81 abuts against the first transmission rod 3; the pressing surface 82 of the second transmission rod 4 is an arc surface, and abuts against the buffer member 81 in the second stroke.

[0066] During the opening process of this embodiment, after the buffer member 81 abuts against the second transmission rod 4, buffering, i.e., the second stroke, is achieved. When too much external force acts on the door body, the abutment between the buffer member 81 and the second transmission rod 4 provides friction, so that part of the external force is consumed, the door body can be opened stably, and the swing of the door body is reduced or stopped.

[0067] Particularly, one end of the second transmission rod 4 is rotatably mounted on the second pin 64 , and the other end of the second transmission rod 4 is hooked on an end of the second transmission rod 4 away from the hinge cup.

[0068] Preferably, the buffer member 81 is a special-shaped spring or an elastic plastic member.

[0069] In this embodiment, due to the toughness and surface friction performance of the plastic material, the plastic part is used as the buffer part 81 to play a better buffering role.

[0070] The second aspect of the buffer hinge of the embodiment of the present invention may adopt the following structure:

[0071] In particular, such as Figure 5-Figure 8As shown, the buffer member 81 has an arc-shaped protrusion and is located on the first transmission rod 3 . A pressing surface 82 is provided on the first fixing member or the second transmission rod 4 . In the second stroke section, the pressing surface 82 abuts against the arc-shaped protrusion of the buffer member 81 .

[0072] The buffer member 81 is an extension structure of the first transmission rod 3, and is provided with an arc-shaped protrusion near the first fixed end 2. Fig. 9 As shown, the pressing surface 82 is made of plastic. At each position in the second stroke segment, the pressing surface 82 abuts against at least one point on the arc-shaped protrusion. During the movement from one end of the second stroke segment to the other end of the second stroke segment, the abutting position between the pressing surface 82 and the arc-shaped protrusion moves along the arc of the arc-shaped protrusion.

[0073] In this embodiment, the first transmission rod 3 abuts against the first fixed end 2 in the second stroke, which increases the hinge opening resistance. In the second stroke, under the action of the first transmission rod 3, part of the external force of the hinge is consumed, the opening speed is delayed, and the speed is controllable, so that the door body opens stably and the swing is reduced.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A buffer structure for a hinge, characterized in that: The hinge buffer structure comprises a first fixed end, a hinge arm, and a linkage member, the hinge arm comprises a first transmission rod and a second transmission rod, the first fixed end is rotatably connected to one end of the first transmission rod and one end of the second transmission rod respectively, and the linkage member is rotatably connected to the other end of the first transmission rod and the other end of the second transmission rod respectively; the hinge buffer structure also comprises a buffer member, the first fixed end has a first relative position and a second relative position relative to the hinge arm; The buffer is located on the first transmission rod, and when the first fixed end rotates from the first relative position to the second relative position, the buffer is pressed against the second transmission rod or the first fixed end; or The buffer is located on the first fixed end. When the first fixed end rotates from the first relative position to the second relative position, the buffer is pressed against the first transmission rod or the second transmission rod.

2. The hinge buffer structure according to claim 1, characterized in that: The buffer member is provided with an arc-shaped buffer surface; The buffer is located on the first transmission rod, and when the first fixed end rotates from the first relative position to the second relative position, the pressing contact position between the buffer and the second transmission rod or the first fixed end moves along the arc of the arc-shaped contact surface; or The buffer is located on the first fixed end. When the first fixed end rotates from the first relative position to the second relative position, the pressing contact position between the arcuate buffer surface of the buffer and the first transmission rod or the second transmission rod moves along the arc of the arcuate contact surface.

3. The hinge buffer structure according to claim 2, characterized in that: The buffer component has an arc-shaped sliding groove or an arc-shaped protrusion on the arc-shaped buffer surface.

4. The hinge buffer structure according to claim 1, characterized in that: The buffer component is an elastic plastic component.

5. A buffer hinge using the buffer structure for hinges according to any one of claims 1 to 4, characterized in that: The linkage member is a second fixed end, the buffer hinge further includes a reset structure, the first fixed end has a closed position and an open position relative to the second fixed end, the first fixed end and the second fixed end are close to each other in the closed position, and the first fixed end and the second fixed end are separated in the open position; The first fixed end is provided with at least a first travel section and a second travel section in sequence between the closed position and the open position; when the first fixed end is in the first travel section, the reset structure can drive the first fixed end to enter the closed position; When the first fixed end rotates from the first relative position to the second relative position, the first fixed end is located in the second travel section.

6. A buffer hinge according to claim 5, characterized in that: The reset structure includes a torsion spring, one end of which is transmission-connected to the hinge arm, and the other end of which is transmission-connected to the first fixed end or the second fixed end. When the first fixed end is in the first stroke section, the torsion spring can drive the first fixed end to enter a closed position.

7. A buffer hinge according to claim 6, characterized in that: The reset structure also includes a damper, which is installed on the first fixed end or the second fixed end. The hinge arm is transmission-connected to one end of the damper. When the first fixed end is in the first stroke section, if the first fixed end and the second fixed end move toward the closed position, the hinge arm compresses the damper.

8. The buffer hinge according to claim 7, characterized in that: The damper is a hydraulic cylinder.

9. The buffer hinge according to claim 5, characterized in that: The first transmission rod is connected to the first fixed end opposite to the second fixed end via a rotating shaft, and the second transmission rod is connected to the first fixed end opposite to the second fixed end via a rotating shaft.

10. The buffer hinge according to claim 5, characterized in that: The second fixed end is a housing, and the first fixed end is a hinge cup.

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