Damping hinge

Abstract

The embodiment of the utility model discloses a damping hinge which comprises a base capable of being fixed on a wall body, a cup head fixed on a door body and capable of rotating relative to the wall body, an arm body connected with the base and a plurality of connecting nails, and further comprises a rocker arm, a connecting piece, a spring and a damping device, the spring is arranged at the connecting position of the rocker arm and the arm body in a sleeved mode, the connecting piece is provided with a protrusion, when the cup head is in an open state, the protrusion abuts against a first straight arm of the spring to enable the spring to generate elastic force, the cup head is kept stable in the opening and closing direction after being completely opened, and the damping device is arranged in the arm body. And the damping device is linked with the connecting piece to slowly close the cup head. The connecting piece is provided with the protrusion, so that the cup head is not prone to shaking in the stroke from 70 degrees to complete opening, the cup head can be stopped at any time in the stroke from 40 degrees to 70 degrees, namely the two-section force state is achieved, and meanwhile other parts can be protected against damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window hinge technical field especially relates to a damping hinge. BACKGROUND

[0002] Hinge is used to connect door body and fixed wall body and allow the relative rotation between both. At present, the structure of the hinge widely used in furniture mostly includes cup head, arm body and base connected in turn. Since the torsional spring deformation will produce large elastic force in the opening and closing process of the hinge, a buffer device is added to the base of the hinge, so that the hinge has good buffering effect in opening and closing, reducing the collision between the door body and the wall body. The connection of the existing two-stage force damping hinge and the door body is still not stable enough, and the cup head is easy to shake after being fully opened.

[0003] The patent with application number CN201811542768.6 discloses a damping hinge, which comprises a combined main body, a hinge main body linked by a link main body, an arm piece and a switch piece. The inner groove of the arm piece is provided with a sliding seat, the sliding seat is provided with a circular cavity for accommodating a damping piece, the sliding seat has a planar bottom outer surface, the bottom outer surface is provided with a limiting part, and the switch piece is symmetrically installed on both sides of the arm piece. The combined main body and the damping hinge can make the door plate close slowly and gently, eliminate the impact sound of the door plate and the door cabinet, and effectively prolong the service life of the damping hinge. However, the hinge has many spare parts, and there is no protection measure for the spare parts, which has certain limitations.

[0004] Therefore, it is necessary to develop a two-stage force damping hinge with spare parts not easy to be damaged. INVENTION CONTENTS

[0005] The technical problem to be solved by the embodiments of the utility model lies in providing a damping hinge.

[0006] In order to solve the above technical problems, the embodiments of the utility model provide a damping hinge, which comprises a base, a cup head fixed on a door body and capable of rotating relative to a wall body, an arm body connected with the base, and a plurality of connecting nails, further comprising a rocker arm, a connecting piece, a spring and a damping device, both ends of the rocker arm and the connecting piece are respectively connected with the cup head and the arm body, the spring is sleeved on the connecting place of the rocker arm and the arm body, the connecting piece has a protrusion, the protrusion presses the first straight arm of the spring when the cup head is in the open state, so that the spring generates elastic force, the cup head is kept stable in the opening and closing direction after being fully opened, and the damping device is arranged in the arm body, the damping device and the connecting piece are linked to make the cup head close slowly in the closing process of the cup head.

[0007] Further, the two springs are coaxial and arranged in axial symmetry, the first straight arms of the two springs are arranged side by side in the middle, and the second straight arms of the two springs are arranged on both sides and abut against the inner wall of the arm body.

[0008] Further, the damping device comprises a bearing seat, a linkage and a damping member, the bearing seat is fixedly arranged in the arm body, the bearing seat has a mounting groove therein, the damping member is slidably arranged in the mounting groove, and the linkage is slidably arranged on the bearing seat, and the damping member and the linkage slide synchronously.

[0009] Further, the bearing seat is provided with an insertion block on both sides, the arm body is provided with a limiting block on both sides of the inner wall, the limiting block cooperates with the top of the inner wall of the arm body to form an insertion slot, and the insertion block is inserted into the insertion slot.

[0010] Further, the connecting member has a hook portion, the hook portion is connected with the damping device, and the damping device generates a buffering resistance force along with the rotation of the connecting member.

[0011] Further, the linkage has a pushing block, and the hook portion is connected with the pushing block.

[0012] Further, the damping member comprises a damping tube and a mandrel inserted into one end of the damping tube, the damping tube is arranged in the mounting groove, and the mandrel abuts against the first straight arm.

[0013] The embodiment of the present application has the following beneficial effects:

[0014] The connecting member is provided with a protrusion, which can prevent the cup head from shaking in the range from 70° to full opening, can stop the cup head at any time in the range from 40° to 70°, that is, in the second force state, and can also protect other components from being damaged;

[0015] The damping device is simple in connection with other components, compact and stable in structure, and convenient to install, different specifications of the arm body can use the same components through the directional movement of the linkage and the damping member in the arm body;

[0016] The damping member is arranged in the arm body, and through the linkage action among the rocker arm, the spring, the connecting member and the bearing seat, the cup head rotates to drive the rocker arm and the connecting member to rotate, the hook portion further drives the linkage and the damping member to move in the bearing seat, the damping member arranged in the bearing seat is supported on the first straight arm of the spring through the mandrel, when the door body rotates to a preset angle around the wall body, the resistance of the damping member is transmitted to the cup head to slow down the rotation speed of the cup head, so that the rotation speed of the door body is slowed down, the door body is slowly and gently closed, the impact sound of the door body and the wall body is effectively eliminated, the limiting block supports the insertion block of the bearing seat to prevent the bearing seat from loosening in the arm body, and the service life of the hinge is effectively prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall assembly structure of the first embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of the first embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of the first embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of an arm body according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a connecting member according to a first embodiment of the present invention;

[0022] Figure 6 This is a schematic structural diagram of a spring in accordance with an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the assembly structure of the support and linkage member of the first embodiment of the present utility model;

[0024] Figure 8 This is a structural diagram of a support in accordance with a first embodiment of the present invention;

[0025] Figure 9 This is a schematic structural diagram of a linkage member in accordance with an embodiment of the present invention;

[0026] Figure 10 This is a cross-sectional view of the structure of the second embodiment of the present utility model;

[0027] Figure 11 It is a structural sectional view of the third embodiment of the present utility model.

[0028] In the picture:

[0029] 1. Cup head, 2. Rocker arm, 21. U-shaped nail, 3. Arm body, 31. Limit block, 4. Base, 5. Connector, 51. Protrusion, 52. Hook, 6. Spring, 61. First straight arm, 62. Second straight arm, 7. Damping device, 71. Support, 711. Mounting groove, 712. Insert block, 72. Linkage part, 721. Dial block, 73. Damping part, 731. Damping tube, 732. Core shaft. DETAILED DESCRIPTION

[0030] In order to make the purpose, 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.

[0031] Example 1:

[0032] likeFigures 1 to 6 As shown, a damping hinge includes a base 4 that can be fixed to a wall, a cup head 1 fixed to a door body and capable of rotating relative to the wall, an arm body 3 connected to the base 4, and several connecting nails. When the hinge is closed, the door body completely covers the wall body. It also includes a rocker arm 2, a connector 5, a spring 6 and a damping device 7. Both ends of the rocker arm 2 and the connector 5 are rotatably connected to the cup head 1 and the arm body 3 respectively, wherein the rocker arm 2 and the connector 5 are rotatably connected to the cup head 1 through a U-shaped nail 21. The spring 6 is sleeved at the connection between the rocker arm 2 and the arm body 3. The connector 5 has a protrusion 51. When the cup head 1 is in the open state, the protrusion 51 presses against the first straight arm 61 of the spring 6 to generate elastic force of the spring 6, so that the cup head 1 remains stable in the opening and closing direction after it is fully opened. The damping device 7 is arranged in the arm body 3. During the closing process of the cup head 1, the damping device 7 and the connector 5 are linked to make the cup head 1 close slowly. There are two springs 6, coaxial and symmetrically arranged. The first straight arms 61 of the two springs 6 are juxtaposed in the middle, and the second straight arms 62 of the two springs 6 are located on either side and both contact the inner wall of the arm 3. As an alternative to this embodiment, the two springs 6 can also be replaced with a single torsion spring with two ends and a central bend. The connector 5 is provided with a protrusion 51, which prevents the cup head 1 from shaking during the travel from 70° to fully open, and also allows the cup head 1 to stop at any time during the travel from 40° to 70°, i.e., a two-stage force state. This also protects other components from damage during use.

[0033] like Figures 7 to 9 As shown, the damping device 7 includes a seat 71, a linkage member 72 and a damping member 73. The seat 71 is fixedly arranged in the arm body 3, and a mounting groove 711 is provided in the seat 71. The damping member 73 is slidably arranged in the mounting groove 711. The linkage member 72 is slidably arranged on the seat 71, and the damping member 73 and the linkage member 72 slide synchronously. Insert blocks 712 are provided on both sides of the seat 71, and limit blocks 31 are provided on both sides of the inner wall of the arm body 3. The limit blocks 31 cooperate with the top of the inner wall of the arm body 3 to form a slot, and the insert blocks 712 are inserted into the slot. The limit blocks 31 support the insert blocks 712 of the seat 71 to prevent the seat 71 from loosening in the arm body 3, thereby effectively extending the service life of the hinge. The connecting member 5 has a hook portion 52, which is connected to the damping device 7 so that the damping device 7 generates buffering resistance as the connecting member 5 rotates. Preferably, the linkage member 72 includes a shift block 721, with the hook portion 52 interlocked with the shift block 721. The damping member 73 includes a damping tube 731 and a core shaft 732 inserted into one end of the damping tube 731. The damping tube 731 is disposed within the mounting groove 711, and the core shaft 732 abuts against the first straight arm 61. The damping device 7 is simple to connect with other components, has a compact and stable structure, and is more convenient to install. The linkage member 72 and the damping member 73 allow for directional movement within the arm body 3, allowing arms 3 of different specifications to use parts of the same specifications.

[0034] A damping member 73 is provided in the arm body 3, and through the linkage between the rocker arm 2, the spring 6, the connecting member 5 and the support 71, when the cup head 1 rotates, the rocker arm 2 and the connecting member 5 are driven to rotate at the same time, and the hook portion 52 further pushes the linkage member 72 and the damping member 73 to move in the support 71, and the damping member 73 placed in the support 71 is supported on the first straight arm 61 of the spring 6 by the core shaft 732. When the door body rotates around the wall to a preset angle, the resistance of the damping member 73 is transmitted to the cup head 1 to slow down the rotation speed of the cup head 1, thereby slowing down the rotation speed of the door body, causing the door body to close slowly and softly, effectively eliminating the impact sound between the door body and the wall.

[0035] Example 2:

[0036] like Figure 10 As shown, a damping hinge of this embodiment has the same main structure as the first embodiment, except that: when the hinge is closed, the door body half covers the wall body, the arm body 3 has a stepped position, and the end close to the cup head 1 is slightly higher than the other end, and the damping device 7 is arranged in the stepped position.

[0037] Example 3:

[0038] like Figure 11 As shown, a damping hinge of this embodiment has the same main structure as that of the first embodiment, except that: when the hinge is closed, the wall is completely exposed to the door body, the arm body 3 has a stepped position, and the end of the arm body 3 close to the cup head 1 is much higher than the other end, and the damping device 7 is arranged in the stepped position.

[0039] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A damping hinge comprising a base (4), a cup head (1), an arm body (3) connected with the base (4) and a plurality of connecting pins, characterized in that, Also include a rocker arm (2), connecting piece (5), spring (6) and damping device (7), the rocker arm (2) and the two ends of the connecting piece (5) are respectively rotatably connected with the cup head (1) and the arm body (3), the spring (6) is sleeved on the connecting place of the rocker arm (2) and the arm body (3), the connecting piece (5) has a protrusion (51), the protrusion (51) presses the first straight arm (61) of the spring (6) when the cup head (1) is in the open state, so that the spring (6) generates elastic force, so that the cup head (1) is completely opened and kept stable in the opening and closing direction, the damping device (7) is arranged in the arm body (3), and the damping device (7) is linked with the connecting piece (5) during the closing process of the cup head (1), so that the cup head (1) is slowly closed.

2. A damper hinge according to claim 1, wherein The spring (6) is two, the two coaxial and axisymmetric arrangement, the first straight arm (61) of the two spring (6) is parallel in the middle, and the second straight arm (62) of the two spring (6) is distributed on both sides and abuts against the inner wall of the arm body (3).

3. A damper hinge according to claim 1, wherein The damping device (7) includes a seat (71), a linkage (72) and a damping member (73), the seat (71) is fixedly arranged in the arm body (3), the seat (71) has an installation groove (711) in the inside, the damping member (73) is slidably arranged in the installation groove (711), the linkage (72) is slidably arranged on the seat (71), and the damping member (73) and the linkage (72) slide synchronously.

4. A damper hinge according to claim 3, wherein The seat (71) is provided with an insertion block (712) on both sides, the inner wall of the arm body (3) is provided with a limiting block (31) on both sides, the limiting block (31) cooperates with the top of the inner wall of the arm body (3) to form a slot, and the insertion block (712) is inserted into the slot.

5. A damper hinge according to claim 3, wherein The connecting piece (5) has a hook portion (52), the hook portion (52) is connected with the damping device (7), so that the damping device (7) generates a buffer resistance with the rotation of the connecting piece (5).

6. A damper hinge according to claim 5, wherein The linkage (72) has a block (721), and the hook portion (52) is connected with the block (721).

7. A damper hinge according to claim 6, wherein The damping member (73) includes a damping pipe (731) and a mandrel (732) inserted into one end of the damping pipe (731), the damping pipe (731) is arranged in the installation groove (711), and the mandrel (732) abuts against the first straight arm (61).

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