Safety automatic door closing hinge with buffer

Abstract

The application discloses a buffer safety automatic door closing hinge, which 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 comprises a connecting head hinged to the fixed seat, a connecting rod connecting the elastic member and the connecting head, and a damping head connecting the damping member and the connecting head; a first connecting shaft is arranged between the connecting head and the fixed seat, a second connecting shaft is arranged between the connecting head and the connecting rod, and a third connecting shaft is arranged between the connecting head and the damping head; 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. When the connecting head rotates around the first connecting shaft, the movement track of the second connecting shaft is not parallel to the movement track of the third connecting shaft, the stroke of the damping member is larger than the stroke of the elastic member, so that the reliability and the service life of the damping member are improved, the door is closed in a buffer mode, and the safety of the door is improved.

Description

[0001] The present application is a divisional application of the application with the application date of "2021.07.16.", the application number of "202110808341.1", and the application name of "A buffer safety automatic door closing hinge". TECHNICAL FIELD

[0002] The present application relates to the technical field of hinge equipment, in particular to a buffer safety automatic door closing hinge. BACKGROUND

[0003] The existing shower room usually adopts a hinge door with a buffer, but the stroke of the spring and the damper of this kind of hinge door is synchronous, and the damper is difficult to produce effect when the stroke is short, resulting in that effective buffering cannot be realized when the door is closed. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a buffer safety automatic door closing hinge, which can increase the stroke of the damping member and improve the safety of closing the door.

[0005] According to the buffer safety automatic door closing hinge provided by the first aspect of the present application, the hinge comprises a fixed seat, a movable seat hingedly connected 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 comprises a connecting head hingedly connected to the fixed seat, a connecting rod connecting the elastic member and the connecting head, and a damping head connecting the damping member and the connecting head; a first connecting shaft is arranged between the connecting head and the fixed seat, a second connecting shaft is arranged between the connecting head and the connecting rod, and a third connecting shaft is arranged between the connecting head and the damping head; the distance between the first connecting shaft and the second connecting shaft is less than the distance between the first connecting shaft and the third connecting shaft.

[0006] According to the buffer safety automatic door closing hinge provided by the present application, at least the following beneficial effects are achieved:

[0007] By arranging the elastic member in the fixed seat and the damping member in the movable seat, and connecting the elastic member and the damping member through the connecting member, the connecting member comprises a connecting head hingedly connected to the fixed seat, 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 less than the distance between the first connecting shaft and the third connecting shaft, when the connecting head rotates around the first connecting shaft, the movement track of the second connecting shaft is not parallel to the movement track of the third connecting shaft, the stroke of the damping member is greater than the stroke of the elastic member, thereby improving the reliability and service life of the damping member, realizing buffer closing of the door, and improving the safety of closing the door.

[0008] According to some embodiments of the present application, the connecting head is a bent plate, which comprises a short side and a long side; the first connecting shaft is arranged at the turning position of the bent 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.

[0009] According to some embodiments of the present application, the fixing seat is provided with a mounting groove, the elastic member comprises a spring arranged in the mounting groove, and a push rod arranged in the spring; the push rod is detachably connected with the connecting rod.

[0010] According to some embodiments of the present application, an adjusting screw is arranged between the elastic member and the fixing seat, which can adjust the initial elastic force of the elastic member.

[0011] According to some embodiments of the present application, the damping member comprises a one-way damping cylinder connected with the movable seat and a damping rod, which is detachably connected with the damping joint.

[0012] According to some embodiments of the present application, the fixing seat is provided with two hinge seats arranged oppositely and a connecting seat arranged between the two hinge seats; the hinge seats and the connecting seat are arranged in a staggered manner; the connecting seat is arranged between the two hinge seats, and the connecting head is connected with the connecting seat.

[0013] According to some embodiments of the present application, the fixing seat is provided with an adjusting waist-shaped hole, the length direction of the adjusting waist-shaped hole is arranged orthogonally to the axis direction of the first connecting shaft; a fine adjustment assembly is arranged in the adjusting waist-shaped hole; the fine adjustment assembly comprises a first elastic adjusting member and a second elastic adjusting member arranged oppositely, and the first connecting shaft is arranged between the first elastic adjusting member and the second elastic adjusting member; 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 the respective axes.

[0014] According to some embodiments of the present application, the first elastic adjusting member and the second elastic adjusting member each comprise an arc-shaped abutting plate, which abuts with the first connecting shaft; an adjusting rod is arranged on the arc-shaped abutting plate, the adjusting rod penetrates through the connecting seat and is fixed with a nut, and a compression spring is arranged between the arc-shaped abutting plate and the adjusting waist-shaped hole.

[0015] According to some embodiments of the present application, the movable seat is provided with a hinge joint matched with the hinge seat, and a limiting plate is arranged on the hinge joint; the bottom surface of the fixing seat and the movable seat is connected with a pressing plate; the top surface of the fixing seat and the movable seat is provided with a decorative cover; a rubber pad and a rubber pad cover are arranged between the fixing seat and the pressing plate and between the movable seat and the pressing plate.

[0016] According to some embodiments of the present application, the outer side of the rubber pad cover is provided with a rubber strip, and the rubber strip is provided with an insertion part, and the insertion part is provided with a cutout.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 is an exploded view of the buffer safety automatic door closing hinge according to the present application;

[0020] Figure 2 is a sectional view of the buffer safety automatic door closing hinge according to the present application in a door closing state;

[0021] Figure 3 is a sectional view of the buffer safety automatic door closing hinge according to the present application in a door opening state;

[0022] Figure 4 is a structural schematic view of a connecting piece according to the present application;

[0023] Figure 5 is a structural schematic view of a fine adjustment assembly according to the present application;

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

[0025] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In the description of the present application, the plural refers to two or more. If there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the present application, the words such as arrangement, installation, connection and the like should be understood in a broad sense, and the specific meanings of the words in the present application can be determined by those skilled in the art in combination with the specific content of the technical solutions, unless otherwise explicitly limited.

[0029] Referring to Figure 1 and Figure 2 , the present application provides a buffer safety automatic door closing hinge, comprising a fixed seat 1, a movable seat 2 hinged with the fixed seat 1, an elastic member 3 arranged in the fixed seat 1, a damping member 4 arranged 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 comprises a connecting head 51 hinged with the fixed seat 1, a connecting rod 52 connecting the elastic member 3 and the connecting head 51, and a damping connecting head 53 connecting the damping member 4 and the connecting head 51.

[0031] The fixed seat 1 and the movable seat 2 are provided with a hinge shaft 6, and the hinge shaft 6 and the rotation axis 7 of the connecting member 5 are not collinear.

[0032] Specifically, the fixed seat 1 is connected with the fixed door leaf 105, and the movable seat 2 is connected with the movable door leaf 106. When the movable door leaf 106 is rotated to open the door, the damping member 4 arranged in the movable seat 2 is stretched, pushing the connecting head 51 connected through the damping connecting head 53 to rotate, and the rotation of the connecting head 51 will push the connecting rod 52 to compress the elastic member 3 to store energy. During the whole process of rotating the movable door leaf 106 to close the door, the elastic member 3 releases elastic force, which pushes the connecting head 51 to rotate through the connecting rod 52, thereby pushing the door to automatically close; during the process of closing the door, the connecting head 51 compresses the damping member 4 through the damping connecting head 53, so that the damping force is generated, which will offset part of the elastic force to buffer and improve the safety of closing the door. In order to avoid the problems of damaging the structure of the hinge shaft 6, processing difficulty and too small stroke of the elastic member 3 and the damping member 4 caused by directly driving the elastic member 3 and the damping member 4 through the hinge shaft 6 between the fixed seat 1 and the movable seat 2, the hinge shaft 6 and the connecting member 5 are independently arranged. The hinge shaft 6 and the connecting member 5 are not collinear, so that the elastic member 3 and the damping member 4 obtain a larger movement stroke, so that the buffering is more sensitive; at the same time, the integrity of the hinge shaft 6 is not damaged, thereby reducing the processing cost.

[0033] Referring to Figure 2Furthermore, the connector 51 is connected to the fixed base 1, the elastic element 3, and the damping element 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 less 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 movement trajectory of the second connecting shaft 8b is not parallel to the movement trajectory of the third connecting shaft 8c, so that the horizontal travel of the connecting rod 52 and the damping connector 53 is different. Specifically, the travel of the elastic element 3 is less than the travel of the damping element 4. In this embodiment, the travel of the damping element 4 is greater than the travel of the elastic element 3, approximately 1.5-2 times the travel of the elastic element 3, to increase the travel of the damping element 4, thereby improving the reliability and service life of the damping element 4.

[0034] See Figure 4 In this embodiment, the connector 51 is a bent plate, with a first connecting shaft 8a located at the bend of the bent plate. The bent plate includes a short side 511 and a long side 512. A second connecting shaft 8b is located on the short side 511 of the connector 51, and a third connecting shaft 8c is located on the long side 512 of the connector 51. Specifically, the connector 51 is a bent plate, with the first connecting shaft 8a located at the bend of the bent plate, the second connecting shaft 8b located on the short side 511, and the third connecting shaft 8c located on the long side 512. This ensures that the rotation radii of the second connecting shaft 8b and the third connecting shaft 8c are different, thereby making the stroke of the damping member 4 greater than the stroke of the elastic member 3.

[0035] Furthermore, the bending plate is a concave plate, and the angle between the long side 512 and the short side 511 is 80°-105°. The concave plate is used to prevent motion interference between the connector 51 and the fixed seat 1 and the movable seat 2 when the connector 51 rotates. 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 them and improve the service life of the connector 51.

[0036] See Figure 2 The fixed base 1 has a mounting groove 11. The elastic element 3 includes a spring 31 disposed in the mounting groove 11 and a push rod 32 sleeved with the spring 31. The push rod 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 32. The push rod 32 has a sleeve rod 321 and a mounting base 322. The sleeve rod 321 is sleeved inside the spring 31 to prevent the spring 31 from bending and deforming, which would affect the normal use of the elastic element 3. The mounting base 322 has a mounting hole 323 adapted to the connecting rod 52. In addition, the number of springs 31 can be set to multiple as needed.

[0037] See Figure 3The damping member 4 comprises a one-way damping cylinder 41 connected with the movable seat 2 and a damping rod 42 detachably connected with the damping joint 53. Specifically, the damping member 4 used in the device is a one-way damping member 4, which does not generate resistance when stretched, and generates damping to absorb the kinetic energy of the closing door when compressed, so as to realize the buffering of closing the door.

[0038] Referring to Figure 1 The fixed seat 1 is provided with two hinge seats 12 arranged oppositely, and the movable seat 2 is provided with hinge joints 21 adapted to the hinge seats 12, and the hinge joints 21 are provided with limiting portions 211. Specifically, the two hinge seats 12 are connected with the corresponding hinge joints 21 through hinge shafts 6. The fixed seat 1 is also provided with a connecting seat 13 arranged between the two hinge seats 12. The connecting seat 13 is used for mounting the connecting joint 51, and the hinge seats 12 and the connecting seat 13 are arranged in a staggered manner, so that the rotation axes of the fixed seat 1 and the movable seat 2 and the rotation axis of the connecting member 5 are not collinear. The connecting seat 13 is arranged between the two hinge seats 12, so that the structure of the hinge shaft 6 will not be damaged by the arrangement of the elastic member 3 and the damping member 4, and movement interference will not occur.

[0039] Referring to Figure 5 In order to adjust the elasticity of the elastic member 3, so as to adjust the speed of opening and closing the door. The fixed seat 1 is provided with an adjusting waist-shaped hole 14, and the adjusting waist-shaped hole 14 is provided with a fine adjustment assembly 9. The fine adjustment assembly 9 comprises first and second elastic adjusting members 9a and 9b arranged oppositely, and the first connecting shaft 8a is arranged between the first and second elastic adjusting members 9a and 9b. The first and second elastic adjusting members 9a and 9b each comprise an arc-shaped abutting plate 91 abutting with the first connecting shaft 8a. The arc-shaped abutting plate 91 is provided with an adjusting rod 92, the adjusting rod 92 passes through the connecting seat 13 and is fixed with a nut 93, and the arc-shaped abutting plate 91 and the adjusting waist-shaped hole 14 are provided with a compression spring 94 to provide a compression force to the arc-shaped abutting plate 91. Specifically, the length direction of the waist-shaped hole 14 is arranged orthogonally to the axis direction of the first connecting shaft 8a, and the first and second elastic adjusting members 9a and 9b can be adjusted along the length direction of the adjusting waist-shaped hole 14. The first and second elastic adjusting members 9a and 9b balance the force applied to the arc-shaped abutting plate 91 by the corresponding compression spring 94 and the locking force between the corresponding adjusting rod 92 and the nut 93. The position of the first connecting shaft 8a is adjusted by adjusting the compression amount of the compression spring 94 of the first and second elastic adjusting members 9a and 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, and the initial compression amount of the elastic member 3 and the initial position of the damping rod 42 change synchronously, so as to adjust the elasticity of the elastic member 3 when opening and closing the door.

[0040] Referring to Figure 6As the second embodiment for adjusting the speed of opening the door, the elastic member 3 is provided with an adjusting screw 107 between the fixed seat 1, the adjusting screw 107 is connected with the elastic member 3, so as to adjust the initial position of the elastic member 3, thereby adjusting the speed of opening the door.

[0041] Referring to Figure 1 The fixed seat 1 and the bottom surface of the movable seat 2 are connected with a pressing plate 10. The pressing plate 10 can prevent the elastic member 3 and the damping member 4 from being taken out. The pressing plate 10 is arranged on the back surface of the fixed door leaf 105 and the movable door leaf 106.

[0042] The fixed seat 1 and the pressing plate 10, and the movable seat 2 and the pressing plate 10 are provided with rubber pads 101 and rubber pad covers 102. The rubber pads 101 can make the soft contact between the hinge and the fixed door leaf 105 and the movable door leaf 106, so as to avoid damaging the fixed door leaf 105 and the movable door leaf 106 due to the excessive pressing force.

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

[0044] The outer side of the rubber pad cover 102 is provided with a rubber strip 20, the rubber strip 20 is provided with an insertion part 201, and the insertion part 201 is provided with a cutout 202. Specifically, the fixed seat 1 is connected with the fixed door leaf 105, the movable seat 2 is connected with the movable door leaf 106, the rubber strip 20 is clamped at the door gap of the fixed door leaf 105 and the movable door leaf 106, the insertion part 201 is inserted into the door gap, the insertion part 201 is provided with the cutout 202 which is matched with the position of the fixed seat 1 and the movable seat 2, so as to avoid the interference with the fixed seat 1 and the movable seat 2, and to realize the waterproof function without affecting the opening and closing of the door.

[0045] In summary, the elastic member 3 is arranged in the fixed seat 1, the damping member 4 is arranged in the movable seat 2, and the elastic member 3 and the damping member 4 are connected through the connecting member 5, the connecting member 5 is hinged with the fixed seat 1, the fixed seat 1 and the movable seat 2 are hinged, and the axis of the hinge shaft 6 of the fixed seat 1 and the movable seat 2 is arranged in the wrong position of the hinge axis 7 of the connecting member 5 and the fixed seat 1, so as to improve the stroke of the elastic member 3 and the damping member 4. Further, the distance between the first connecting shaft 8a and the second connecting shaft 8b is less than the distance between the first connecting shaft 8a and the third connecting shaft 8c, so that when the connecting head 51 rotates around the first connecting shaft 8a, the movement track of the second connecting shaft 8b is different from the movement stroke of the third connecting shaft 8c, the stroke of the elastic member 3 is less than the stroke of the damping member 4, wherein the stroke of the elastic member 3 is about 7mm-8mm, and the stroke of the damping member 4 is about 12mm-15mm, so as to improve 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 application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A buffer-safe automatic door closing hinge, characterized in that, It includes a fixed base, a movable base hinged to the fixed base, an elastic element disposed within the fixed base, a damping element disposed within the movable base, and a connecting element connecting the elastic element and the damping element; The connector includes a connector hinged to the fixed base, a connecting rod connecting the elastic element and the connector, and a damping joint connecting the damping element and the connector. A first connecting shaft is provided between the connector and the fixed base, a second connecting shaft is provided between the connector and the connecting rod, and a third connecting shaft is provided between the connector and the damping joint. The distance between the first connecting shaft and the second connecting shaft is less than the distance between the first connecting shaft and the third connecting shaft.

2. The buffered safety automatic closing hinge as described in claim 1, characterized in that, The connector is a bent plate, and the bent plate includes a short side and a long side; The first connecting shaft is located at the bend of the bent plate, the second connecting shaft is located on the short side of the connector, and the third connecting shaft is located on the long side of the connector.

3. The buffered safety automatic closing hinge as described in claim 1, characterized in that, The fixed base is provided with a mounting groove, and the elastic element includes a spring provided in the mounting groove and a push rod sleeved in the spring; The push rod is detachably connected to the connecting rod.

4. The buffered safety automatic closing hinge as described in claim 3, characterized in that, An adjusting screw is provided between the elastic element and the fixed base, and the adjusting screw can adjust the initial elastic force of the elastic element.

5. The buffered safety automatic closing hinge as described in claim 1, characterized in that, The damping component includes a one-way damping cylinder connected to the movable seat and a damping rod, wherein the damping rod is detachably connected to the damping joint.

6. The buffered safety automatic closing hinge as described in claim 5, characterized in that, The fixed base is provided with two hinge seats arranged opposite each other, and a connecting seat disposed between the two hinge seats; The hinged seat and the connecting seat are misaligned; The connecting seat is located between the two hinge seats, and the connecting head is connected to the connecting seat.

7. The buffered safety automatic closing hinge as described in claim 6, characterized in that, The fixed base is provided with an adjustable waist-shaped hole, and the length direction of the waist-shaped hole is orthogonal to the axial direction of the first connecting shaft; The adjustable waist-shaped hole is equipped with a fine-tuning component; The fine-tuning component includes a first elastic adjusting member and a second elastic adjusting member disposed opposite to each other, and the first connecting shaft is disposed between the first elastic adjusting member and the second elastic adjusting member; 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.

8. The buffered safety automatic closing hinge as described in claim 7, characterized in that, Both the first elastic adjusting member and the second elastic adjusting member include an arc-shaped abutment plate, which abuts against the first connecting shaft; An adjusting rod is provided on the arc-shaped abutment plate. The adjusting rod passes through the connecting seat and is fixed with a nut. A compression spring is provided between the arc-shaped abutment plate and the adjusting waist-shaped hole.

9. The buffered safety automatic closing hinge as described in claim 6, characterized in that, The movable seat is provided with a hinge joint that is adapted to the hinge seat, and the hinge joint is provided with a limiting plate; Both the fixed seat and the movable seat have pressure plates connected to their bottom surfaces; The top surfaces of the fixed base and the movable base are provided with decorative covers; A rubber pad and a rubber pad cover are provided between the fixed seat and the pressure plate, and between the movable seat and the pressure plate.

10. The buffered safety automatic closing hinge as described in claim 9, characterized in that, The outer side of the rubber pad cover is provided with a rubber strip, the rubber strip is provided with an insertion part, and the insertion part is provided with a cut.

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