A buffer safety automatic closing hinge

Abstract

The present invention discloses a buffer safety automatic door closing hinge, comprising a fixed seat, a movable seat, an elastic member arranged in the fixed seat, a damping member arranged in the movable seat, and a connecting member connecting the elastic member and the damping member; the connecting member comprises a connecting head hinged to the fixed seat, a connecting rod connecting the elastic member and the connecting head, and a damping joint connecting the damping member and the connecting head; a first connecting shaft is provided between the connecting head and the fixed seat, a second connecting shaft is provided between the connecting head and the connecting rod, and a third connecting shaft is provided between the connecting head and the damping joint, and the distance between the first connecting shaft and the second connecting shaft is smaller than the distance between the first connecting shaft and the third connecting shaft; the connecting head is a bent plate. The stroke of the damping member of the present invention is greater than the stroke of the elastic member, thereby improving the reliability of the damping member; the connecting head is a bent plate and comprises a short side and a long side, so as to avoid interference between the connecting head and the fixed seat and the movable seat when the connecting head rotates, and a reinforcing rib is provided between the short side and the long side, thereby improving the connection strength of the connecting head.

Description

[0001] This application is a divisional application with the application date of "2021.07.16.", application number "202110808341.1", and application name "A buffered safety automatic door closing hinge". Technical Field

[0002] The present invention relates to the technical field of hinges, in particular to a buffering safety automatic door closing hinge. Background Art

[0003] Existing shower rooms typically use hinged doors with dampers. However, the travel of the spring and damper in these hinged doors is synchronized. When the travel is short, the damper has difficulty in functioning, resulting in ineffective cushioning when the door closes. Furthermore, the spring and damper are mounted separately on the hinge's two bases, and when the two bases articulate, internal components can easily interfere with each other, causing wear and even damage. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a buffered safety automatic door closing hinge that can increase the stroke of the damping member and avoid motion interference when the hinge rotates, thereby improving the reliability of the hinge.

[0005] According to an embodiment of the first aspect of the present invention, a buffered safety automatic door closing hinge includes a fixed seat, a movable seat hinged to the fixed seat, an elastic member arranged in the fixed seat, a damping member arranged in the movable seat, and a connecting member connecting the elastic member and the damping member; the connecting member includes a connecting head hinged to the fixed seat, a connecting rod connecting the elastic member and the connecting head, and a damping joint connecting the damping member and the connecting head; a first connecting shaft is provided between the connecting head and the fixed seat, a second connecting shaft is provided between the connecting head and the connecting rod, and a third connecting shaft is provided between the connecting head and the damping joint, and the distance between the first connecting shaft and the second connecting shaft is smaller than the distance between the first connecting shaft and the third connecting shaft; the connecting head is a bent plate, and the bent plate includes a short side and a long side, and a reinforcing rib is provided between the long side and the short side.

[0006] A buffered safety automatic door closing hinge according to an embodiment of the present invention has at least the following beneficial effects:

[0007] By arranging an elastic member in the fixed seat, a damping member in the movable seat, and connecting the elastic member and the damping member through a connecting member, the connecting member includes a connecting head hinged to the fixed seat, and the connecting head is connected to the fixed seat, the elastic member and the damping member through the first connecting shaft, the second connecting shaft and the third connecting shaft respectively; by making the distance between the first connecting shaft and the second connecting shaft smaller than the distance between the first connecting shaft and the third connecting shaft, so that when the connecting head rotates around the first connecting shaft, the movement trajectory of the second connecting shaft and the movement trajectory of the third connecting shaft are not parallel, and the stroke of the damping member is larger than the stroke of the elastic member, thereby improving the reliability and service life of the damping member, achieving buffered door closing, and improving the safety of door closing; the connecting head is a concave bent plate and includes a short side and a long side, which can effectively avoid movement interference between the connecting head and the fixed seat and the movable seat when rotating, and a reinforcing rib is provided between the short side and the long side, which improves the connection strength of the connecting head, making the operation of the hinge more stable and the service life longer.

[0008] According to some embodiments of the present invention, the first connecting axis is arranged at the turning point of the bending plate, the second connecting axis is arranged on the short side of the connecting head, and the third connecting axis is arranged on the long side of the connecting head.

[0009] According to some embodiments of the present invention, the damping member includes a one-way damping cylinder connected to the movable seat and a damping rod, and the damping rod is detachably connected to the damping joint.

[0010] According to some embodiments of the present invention, the fixing seat is provided with two hinged seats arranged opposite to each other, and a connecting seat arranged between the two hinged seats; the hinged seat and the connecting seat are staggered; the connecting seat is arranged between the two hinged seats, and the connecting head is connected to the connecting seat.

[0011] According to some embodiments of the present invention, an adjustment waist-shaped hole is provided on the fixing seat, and the length direction of the waist-shaped hole is arranged orthogonally to the axial direction of the first connecting shaft; a fine-tuning component is provided in the adjustment waist-shaped hole; the fine-tuning component includes a first elastic adjustment part and a second elastic adjustment part arranged relatively to each other, and the first connecting shaft is arranged between the first elastic adjustment part and the second elastic adjustment part.

[0012] According to some embodiments of the present invention, the first elastic adjusting member and the second elastic adjusting member can adjust the position of the first connecting shaft to push the connecting rod and the damping joint to slide along their respective axes.

[0013] According to some embodiments of the present invention, the first elastic adjustment member and the second elastic adjustment member both include an arc-shaped abutment plate, which abuts against the first connecting shaft; an adjustment rod is provided on the arc-shaped abutment plate, which passes through the connecting seat and is fixed with a nut, and a compression spring is provided between the arc-shaped abutment plate and the adjustment waist-shaped hole.

[0014] According to some embodiments of the present invention, a mounting groove is provided in the fixing seat, and the elastic member includes a spring provided in the mounting groove, and a push rod member sleeved in the spring; an adjusting screw is provided between the elastic member and the fixing seat, and the adjusting screw can adjust the initial elastic force of the elastic member.

[0015] According to some embodiments of the present invention, a mounting groove is provided in the fixing seat, and the elastic member includes a spring and a push rod member sleeved in the spring, one end of the spring abuts against the mounting groove, and the other end abuts against the push rod member.

[0016] According to some embodiments of the present invention, a hinge shaft is provided between the fixed seat and the movable seat, and the hinge shaft is not colinear with the rotation axis of the connecting member.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 This is an exploded view of the buffer safety automatic closing hinge involved in the present invention;

[0020] Figure 2 This is a cross-sectional view of the buffer safety automatic door closing hinge of the present invention in the closed state;

[0021] Figure 3 This is a cross-sectional view of the buffer safety automatic door closing hinge in the open state of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a connector according to the present invention;

[0023] Figure 5 It is a structural schematic diagram of the fine-tuning assembly involved in the present invention;

[0024] Figure 6 This is another embodiment of the present invention for adjusting the door opening speed. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] See also Figure 1 and Figure 2 The present invention provides a buffer safety automatic door closing hinge, comprising a fixed seat 1, a movable seat 2 hinged to the fixed seat 1, an elastic member 3 provided in the fixed seat 1, a damping member 4 provided in the movable seat 2, and a connecting member 5 connecting the elastic member 3 and the damping member 4;

[0030] The connecting member 5 includes a connecting head 51 hinged to the fixing base 1, a connecting rod 52 connecting the elastic member 3 and the connecting head 51, and a damping joint 53 connecting the damping member 4 and the connecting head 51;

[0031] A hinge shaft 6 is provided between the fixed seat 1 and the movable seat 2 , and the hinge shaft 6 is not colinear with a rotation axis 7 of the connecting member 5 .

[0032] Specifically, the fixed seat 1 is connected to the fixed door leaf 105, and the movable seat 2 is connected to the movable door leaf 106. When the movable door leaf 106 rotates to open the door, the damping member 4 provided in the movable seat 2 is stretched, pushing the connector 51 connected through the damping joint 53 to rotate. The rotation of the connector 51 will push the connecting rod 52 to compress the elastic member 3 to store energy. During the entire process of the movable door leaf 106 rotating to close the door, the elastic member 3 releases the elastic force and pushes the connector 51 to rotate through the connecting rod 52, thereby pushing the door to close automatically; in the process of closing the door, the connector 51 compresses the damping member 4 through the damping joint 53, causing it to generate a damping force. The damping force will offset part of the elastic force, provide buffering, and improve the safety of closing the door. In order to avoid the problems of directly driving the elastic member 3 and the damping member 4 through the hinge shaft 6 of the fixed seat 1 and the movable seat 2, which may damage the structure of the hinge shaft 6, cause processing difficulties, and cause the elastic member 3 and the damping member 4 to have too small a stroke, the present invention sets the hinge shaft 6 and the connecting member 5 independently. By making the hinge shaft 6 and the rotation axis 7 of the connecting member 5 non-collinear, the elastic member 3 and the damping member 4 obtain a larger movement stroke, making the buffering more sensitive; at the same time, the integrity of the hinge shaft 6 will not be damaged, thereby reducing the processing cost.

[0033] See also Figure 2 Furthermore, the connector 51 is connected to the fixing base 1, the elastic member 3, and the damping member 4 via the first connecting shaft 8a, the second connecting shaft 8b, and the third connecting shaft 8c, respectively. The distance between the first connecting shaft 8a and the second connecting shaft 8b is smaller than the distance between the first connecting shaft 8a and the third connecting shaft 8c. When the connector 51 rotates around the first connecting shaft 8a, the motion trajectory of the second connecting shaft 8b is not parallel to the motion trajectory of the third connecting shaft 8c, so that the horizontal motion strokes of the connecting rod 52 and the damping joint 53 are different. Specifically, the stroke of the elastic member 3 is smaller than the stroke of the damping member 4. In this embodiment, the stroke of the damping member 4 is greater than that of the elastic member 3, and the stroke of the damping member 4 is approximately 1.5-2 times the stroke of the elastic member 3, so as to increase the stroke of the damping member 4 and thereby improve the reliability and service life of the damping member 4.

[0034] See also Figure 4 In this embodiment, the connector 51 is a bent plate, with the first connecting shaft 8a disposed at the turning point of the bent plate. The bent plate includes a short side 511 and a long side 512. The second connecting shaft 8b is disposed on the short side 511 of the connector 51, and the third connecting shaft 8c is disposed on the long side 512 of the connector 51. Specifically, the connector 51 is a bent plate, with the first connecting shaft 8a disposed at the turning point of the bent plate, the second connecting shaft 8b disposed on the short side 511, and the third connecting shaft 8c disposed on the long side 512. This ensures that the second and third connecting shafts 8b and 8c have different rotational radii, thereby ensuring that the stroke of the damping member 4 is greater than the stroke of the elastic member 3.

[0035] Furthermore, the bent plate is concave, with the angle between the long side 512 and the short side 511 being 80°-105°. This concave plate prevents interference between the connector 51 and the fixed seat 1 and movable seat 2 during rotation. The angle between the long side 512 and the short side 511 is 80°-105°, and reinforcing ribs are provided between the long side 512 and the short side 511 to increase the connection strength between the two sides, thereby improving the service life of the connector 51.

[0036] See also Figure 2 , a mounting groove 11 is provided in the fixing seat 1, and the elastic member 3 includes a spring 31 provided in the mounting groove 11, and a push rod member 32 sleeved with the spring 31; the push rod member 32 is detachably connected to the connecting rod 52. Specifically, one end of the spring 31 abuts against the mounting groove 11, and the other end abuts against the push rod member 32. The push rod member 32 is provided with a sleeve rod 321 and a mounting seat 322. The sleeve rod 321 is sleeved in the spring 31 to prevent the spring 31 from bending and deforming, which affects the normal use of the elastic member 3. The mounting seat 322 is provided with a mounting hole 323 adapted to the connecting rod 52. In addition, the number of springs 31 can be set to multiple according to needs.

[0037] See also Figure 3 The damping member 4 includes a one-way damping cylinder 41 connected to the movable seat 2 and a damping rod 42. The damping rod 42 is detachably connected to the damping joint 53. Specifically, the damping member 4 used in this device is a one-way damping member 4. When stretched, the damping member 4 does not generate resistance. When compressed, the damping member 4 generates damping to absorb the kinetic energy of the door closing, thereby achieving a cushioned door closing.

[0038] See also Figure 1 The fixed seat 1 is provided with two hinged seats 12 arranged opposite to each other, and the movable seat 2 is provided with a hinged head 21 adapted to the hinged seat 12, and the hinged head 21 is provided with a limit portion 211. Specifically, the two hinged seats 12 are respectively connected to the corresponding hinged heads 21 through the hinge shaft 6. The fixed seat 1 is also provided with a connecting seat 13 arranged between the two hinged seats 12. The connecting seat 13 is used to install the connecting head 51. The hinged seat 12 and the connecting seat 13 are staggered so that the rotation axes of the fixed seat 1 and the movable seat 2 are not colinear with the rotation axis of the connecting member 5. The connecting seat 13 is arranged between the two hinged seats 12, so that the structure of the hinged shaft 6 will not be destroyed due to the arrangement of the elastic member 3 and the damping member 4, resulting in motion interference.

[0039] See also Figure 5To facilitate adjustment of the elastic force of the elastic member 3 and thereby adjust the speed of the door opening and closing, the fixing base 1 is provided with an adjustment waist-shaped hole 14, within which a fine-tuning assembly 9 is located. The fine-tuning assembly 9 comprises a first elastic adjustment member 9a and a second elastic adjustment member 9b, which are arranged opposite each other. The first connecting shaft 8a is disposed between the first and second elastic adjustment members 9a and 9b. Both the first and second elastic adjustment members 9a and 9b comprise an arcuate abutting plate 91, which abuts the first connecting shaft 8a. An adjustment rod 92 is provided on the arcuate abutting plate 91, which passes through the connecting base 13 and is fixed to a nut 93. A compression spring 94 is provided between the arcuate abutting plate 91 and the adjustment waist-shaped hole 14 to provide a pressing force to the arcuate abutting plate 91. Specifically, the length of the waist-shaped hole 14 is orthogonal to the axial direction of the first connecting shaft 8a. Both the first and second elastic adjusting members 9a, 9b are adjustable along the length of the waist-shaped hole 14. The first and second elastic adjusting members 9a, 9b are balanced by the force exerted on the arcuate abutment plate 91 by the corresponding compression springs 94 and the locking force between the corresponding adjustment rods 92 and nuts 93. The position of the first connecting shaft 8a is adjusted by adjusting the compression of the compression springs 94 of the first and second elastic adjusting members 9a, 9b. When the position of the first connecting shaft 8a changes, the positions of the connecting rod 52 and the damping joint 53 also change accordingly. The initial compression of the elastic member 3 and the initial position of the damping rod 42 change synchronously, thereby adjusting the elastic force of the elastic member 3 when the door is opened or closed.

[0040] See also Figure 6 As a second embodiment of adjusting the speed of door opening, an adjusting screw 107 is provided between the elastic member 3 and the fixing seat 1. The adjusting screw 107 is connected to the elastic member 3 to adjust the initial position of the elastic member 3, thereby adjusting the speed of opening and closing the door.

[0041] See also Figure 1 The bottom surfaces of the fixed seat 1 and the movable seat 2 are both connected with a pressing plate 10. The pressing plate 10 can prevent the elastic member 3 and the damping member 4 from falling out. The pressing plate 10 is arranged on the back of the movable door leaf 106 and the fixed door leaf 105.

[0042] A rubber pad 101 and a rubber pad cover 102 are provided between the fixed seat 1 and the pressure plate 10, and between the movable seat 2 and the pressure plate 10. The rubber pad 101 can make the hinge softly contact with the fixed door leaf 105 and the movable door leaf 106, avoiding damage to the fixed door leaf 105 and the movable door leaf 106 due to excessive pressing force.

[0043] The top surfaces of the fixed seat 1 and the movable seat 2 are provided with a decorative cover 103. The decorative cover 103 is connected to the pressing plate 10 by screws.

[0044] The outer side of the rubber gasket cover 102 is provided with a rubber strip 20, which is provided with an insertion portion 201, and the insertion portion 201 is provided with a cutout 202. Specifically, the fixed seat 12 is connected to the fixed door leaf 105, and the movable seat 2 is connected to the movable door leaf 106. The rubber strip 20 is stuck in the door gap between the fixed door leaf 105 and the movable door leaf 106, and the insertion portion 201 is inserted into the door gap. To avoid interference with the fixed seat 1 and the movable seat 2, the insertion portion 201 is provided with a cutout 202 that adapts to the position of the fixed seat and the sliding seat, so as to achieve waterproofing without affecting the opening and closing of the door.

[0045] In summary, the present invention provides an elastic member 3 in the fixed seat 1, a damping member 4 in the movable seat 2, and connects the elastic member 3 and the damping member 4 via a connecting member 5. The connecting member 5 is hinged to the fixed seat 1, and the fixed seat 1 is hinged to the movable seat 2. The axis of the hinge shaft 6 between the fixed seat 1 and the movable seat 2 is staggered with the hinge axis 7 between the connecting member 5 and the fixed seat 1, so as to increase the stroke of the elastic member 3 and the damping member 4. Furthermore, by making the distance between the first connecting shaft 8a and the second connecting shaft 8b smaller than the distance between the first connecting shaft 8a and the third connecting shaft 8c, when the connector 51 rotates around the first connecting shaft 8a, the motion trajectory of the second connecting shaft 8b is different from the motion stroke of the third connecting shaft 8c, and the stroke of the elastic member 3 is smaller than the stroke of the damping member 4. The stroke of the elastic member 3 is approximately 7mm-8mm, and the stroke of the damping member 4 is approximately 12mm-15mm, so as to increase the stroke of the damping member 4, thereby improving the reliability and service life of the damping member 4.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A buffer safety automatic closing hinge, characterized in that: It comprises a fixed seat, a movable seat hinged to the fixed seat, an elastic member arranged in the fixed seat, a damping member arranged in the movable seat, and a connecting member connecting the elastic member and the damping member; The connecting member includes a connecting head hinged to the fixing seat, a connecting rod connecting the elastic member and the connecting head, and a damping joint connecting the damping member and the connecting head; A first connecting shaft is provided between the connecting head and the fixing seat, a second connecting shaft is provided between the connecting head and the connecting rod, and a third connecting shaft is provided between the connecting head and the damping joint, wherein the distance between the first connecting shaft and the second connecting shaft is smaller than the distance between the first connecting shaft and the third connecting shaft; The connecting head is a bent plate, and the bent plate includes a short side and a long side. A reinforcing rib is provided between the long side and the short side.

2. The buffer safety automatic closing hinge according to claim 1, characterized in that: The first connecting shaft is arranged at the turning point of the bending plate, the second connecting shaft is arranged on the short side of the connecting head, and the third connecting shaft is arranged on the long side of the connecting head.

3. The buffer safety automatic closing hinge according to claim 1, characterized in that: The damping member includes a one-way damping cylinder and a damping rod connected to the movable seat, and the damping rod is detachably connected to the damping joint.

4. The buffer safety automatic closing hinge according to claim 3, characterized in that: The fixing seat is provided with two hinged seats arranged opposite to each other, and a connecting seat arranged between the two hinged seats; The hinge seat and the connecting seat are staggered; The connecting seat is arranged between the two hinge seats, and the connecting head is connected to the connecting seat.

5. The buffer safety automatic closing hinge according to claim 4, characterized in that: The fixing seat is provided with an adjustment waist-shaped hole, and the length direction of the waist-shaped hole is arranged orthogonal to the axial direction of the first connecting shaft; A fine-tuning component is provided in the adjusting waist-shaped hole; The fine-tuning assembly includes a first elastic adjusting member and a second elastic adjusting member that are arranged opposite to each other, and the first connecting shaft is arranged between the first elastic adjusting member and the second elastic adjusting member.

6. The buffer safety automatic closing hinge according to claim 5, characterized in that: The first elastic adjusting member and the second elastic adjusting member can adjust the position of the first connecting shaft to push the connecting rod and the damping joint to slide along their respective axes.

7. The buffer safety automatic closing hinge according to claim 6, characterized in that: The first elastic adjusting member and the second elastic adjusting member each include an arc-shaped abutting plate, and the arc-shaped abutting plate abuts against the first connecting shaft; An adjusting rod is provided on the arc-shaped abutting plate, and the adjusting rod passes through the connecting seat and is fixed with a nut. A compression spring is provided between the arc-shaped abutting plate and the adjusting waist-shaped hole.

8. The buffer safety automatic closing hinge according to claim 3, characterized in that: The fixing seat is provided with a mounting groove, and the elastic member includes a spring arranged in the mounting groove, and a push rod member sleeved in the spring; An adjusting screw is provided between the elastic member and the fixing seat, and the adjusting screw can adjust the initial elastic force of the elastic member.

9. The buffer safety automatic closing hinge according to claim 1, characterized in that: A mounting groove is provided in the fixing seat, and the elastic member includes a spring and a push rod member sleeved in the spring. One end of the spring abuts against the mounting groove, and the other end abuts against the push rod member.

10. The buffer safety automatic closing hinge according to claim 1, characterized in that: A hinge shaft is provided between the fixed seat and the movable seat, and the hinge shaft is not collinear with the rotation axis of the connecting member.

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