Buffer mechanism and buffer hinge

Abstract

The utility model provides a buffering mechanism and a buffering hinge. The buffering mechanism comprises a first sleeve, a second sleeve, a transmission shaft sleeve, a rotating shaft core, a guide column, an elastic piece and a damper. One end of the transmission shaft sleeve is connected to the first sleeve, and the other end of the transmission shaft sleeve is connected to the second sleeve; one end of the rotating shaft core is inserted into the transmission shaft sleeve and cannot rotate relative to the transmission shaft sleeve, the other end of the rotating shaft core is located in the second sleeve, a rotating guide groove is formed in the outer wall of the rotating shaft core, and the rotating guide groove is spirally formed around the outer wall of the rotating shaft core; one end of the guide column is connected to the inner wall of the second sleeve, and the other end of the guide column is inserted into the rotary guide groove; one end of the elastic piece is connected to the second sleeve, and the other end of the elastic piece abuts against the rotating shaft core; the damper is arranged on the first sleeve, and a movable shaft of the damper abuts against the rotating shaft core. The buffering mechanism and the buffering hinge are simple in production and processing technology, long in service life, good in adaptability and more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers, in particular to a buffer mechanism and a buffer hinge. Background Art

[0002] Among the existing hinges, the buffer hinge is a special hinge. Its main feature is that a buffer mechanism is added inside the hinge, which can reduce the collision force by slowing down the closing speed when two components are closed, thus achieving the buffer effect.

[0003] According to different buffer methods, buffer hinges can be divided into various types. The more commonly used one is the hydraulic buffer hinge. Currently, the hydraulic buffer hinge generally has an internal oil circuit. The internal oil circuit reset component and the components of the hydraulic buffer mechanism are both arranged in the same cavity. During use, foreign objects generated by the movement and wear of the reset component are likely to block the oil circuit of the hydraulic buffer, resulting in easy damage to the product. Moreover, the complex internal structure of the product leads to a large product volume, making it difficult to coordinate with the door leaf and inconvenient to use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a buffer mechanism and a buffer hinge, aiming to solve the problems existing in the existing buffer hinges, such as easy damage, short service life, and difficulty in coordinating with the door leaf, resulting in inconvenient use.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, a buffer mechanism is provided, including:

[0007] A first sleeve;

[0008] A second sleeve, which can rotate relative to the first sleeve;

[0009] A drive shaft sleeve, one end of which is connected to the first sleeve, and the other end of which is connected to the second sleeve. The drive shaft sleeve can rotate relative to the second sleeve;

[0010] A rotating shaft core, one end of which is inserted into the drive shaft sleeve and cannot rotate relative to the drive shaft sleeve. The other end of the rotating shaft core is located inside the second sleeve. A rotating guide groove is provided on the outer wall of the rotating shaft core, and the rotating guide groove is spirally arranged around the outer wall of the rotating shaft core;

[0011] A guide post, one end of which is connected to the inner wall of the second sleeve, and the other end of which is inserted into the rotating guide groove;

[0012] An elastic member, one end of the elastic member is connected to the second sleeve, and the other end of the elastic member abuts against the rotating shaft core;

[0013] A damper, the damper is disposed in the first sleeve, and a movable shaft of the damper abuts against the rotating shaft core.

[0014] Optionally, the rotation guiding groove includes a spiral section and a horizontal section. The spiral section is spirally arranged around the outer wall of the rotating shaft core, and the horizontal section is arranged around the outer wall of the rotating shaft core along the circumferential direction of the rotating shaft core. The projection of the spiral section along the axial direction of the rotating shaft core is a quarter circle arc, and the projection of the horizontal section along the axial direction of the rotating shaft core is a quarter circle arc.

[0015] Optionally, the number of the rotation guiding grooves and the guiding columns is two. The two guiding columns are respectively inserted into the two rotation guiding grooves, and the two rotation guiding grooves are symmetrically arranged about the axis of the rotating shaft core.

[0016] Optionally, one end of the guiding column close to the rotation guiding groove is hemispherical, and stop positions are arranged at both ends of the rotation guiding groove. The stop positions are hemispherical grooves adapted to the guiding column.

[0017] Optionally, the buffer mechanism further includes a first adjusting member, and the first adjusting member is threadedly connected to the first sleeve and can abut against one end of the damper away from the rotating shaft core.

[0018] Optionally, the buffer mechanism further includes a second adjusting member, and the second adjusting member is threadedly connected to the second sleeve and can abut against one end of the elastic member away from the rotating shaft core.

[0019] Optionally, the buffer mechanism further includes a locking member. A locking hole is provided on the outer wall of the first sleeve, and the locking member is threadedly connected to the locking hole and abuts against the transmission shaft sleeve.

[0020] Optionally, the transmission shaft sleeve has a transmission insertion portion. A first anti-rotation hole for inserting the transmission insertion portion is provided in the first sleeve. The cross sections of the transmission insertion portion and the first anti-rotation hole are both polygons adapted to each other. The rotating shaft core has an anti-rotation insertion portion. A second anti-rotation hole for inserting the anti-rotation insertion portion is provided in the transmission shaft sleeve. The cross sections of the anti-rotation insertion portion and the second anti-rotation hole are both polygons adapted to each other.

[0021] Optionally, the buffer mechanism further includes a first plain bearing and a second plain bearing. The first plain bearing is disposed between the first sleeve and the second sleeve, and the second plain bearing is disposed in the second sleeve. The second plain bearing is located between the transmission shaft sleeve and the second sleeve.

[0022] In a second aspect, a buffer hinge is provided, which includes a first connecting member, a second connecting member and the above-mentioned buffer mechanism. The first connecting member has a first connecting portion and a second connecting portion. The first connecting portion is connected to the first sleeve and cannot rotate relative to the first sleeve. The second connecting portion is rotatably connected to the second sleeve, and the second connecting member is connected to the second sleeve.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. In the buffer mechanism provided by the present utility model, the first sleeve and the second sleeve are mainly used to connect the two connecting members of the hinge. The first sleeve and the second sleeve can realize the rotation function of the entire hinge by rotating relative to each other. When the first sleeve rotates, the rotating shaft core is driven to rotate through the transmission shaft sleeve. Since the rotating shaft core is provided with a rotation guiding groove arranged in a spiral manner, and a guiding post is arranged in the second sleeve, the rotating shaft core will move along the axial direction of the rotating shaft core while rotating. Specifically, during the process of the hinge being closed to opened, the rotating shaft core will move towards the elastic member while rotating. At this time, the elastic member will be in a compressed state. During the process of the hinge being opened to closed, the elastic member will release its own elastic potential energy, pushing the rotating shaft core to move towards the direction of the first sleeve. The rotating shaft core drives the movable shaft of the damper to move, and the damper can offset part of the elastic potential energy of the elastic member, enabling the rotating shaft core to slide slowly, thereby achieving a buffering effect. Compared with the existing hydraulic buffer mechanism, the overall structure of the buffer mechanism of the present utility model is simpler, and there is no need to consider oil circuit problems. The buffer can be achieved by using a simple mechanical mechanism, which is not easily damaged, has a longer service life, and can better adapt to different door leaves, with better adaptability and more convenient to use.

[0025] 2. In the buffer hinge provided by the present utility model, the above-mentioned buffer mechanism is adopted, which can provide a good buffering effect for the relative rotation between the first connecting member and the second connecting member, with a better buffering effect, better applicability and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the buffer mechanism of the present utility model;

[0028] Figure 2Schematic diagram of the internal structure of the buffer mechanism of the present utility model;

[0029] Figure 3 Explosion diagram of the buffer mechanism of the present utility model;

[0030] Figure 4 Schematic diagram of the rotating shaft core and guide post of the buffer mechanism of the present utility model;

[0031] Figure 5 Schematic diagram of the transmission shaft sleeve of the buffer mechanism of the present utility model;

[0032] Figure 6 Schematic diagram of the buffer hinge of the present utility model.

[0033] In the figure: 1. First sleeve; 2. Second sleeve; 3. Transmission shaft sleeve; 31. Transmission insertion part; 4. Rotating shaft core; 41. Rotating guide groove; 42. Spiral section; 43. Horizontal section; 44. Stop position; 45. Anti-rotation insertion part; 5. Guide post; 51. Limit ball cover; 52. Ball; 6. Elastic member; 7. Damper; 8. First adjusting member; 9. Second adjusting member; 10. Locking member; 11. First plain bearing; 12. Second plain bearing; 13. First connecting member; 14. Second connecting member. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0037] Next, in combination with Figures 1 to 6Describe the buffer mechanism and buffer hinge of the present utility model.

[0038] As Figures 1 to 5 shown, the present utility model provides a buffer mechanism, including a first sleeve 1, a second sleeve 2, a transmission shaft sleeve 3, a rotating shaft core 4, a guide post 5, an elastic member 6 and a damper 7. The second sleeve 2 can rotate relative to the first sleeve 1; one end of the transmission shaft sleeve 3 is connected to the first sleeve 1, and the other end of the transmission shaft sleeve 3 is connected to the second sleeve 2. The transmission shaft sleeve 3 can rotate relative to the second sleeve 2; one end of the rotating shaft core 4 is inserted into the transmission shaft sleeve 3 and cannot rotate relative to the transmission shaft sleeve 3. The other end of the rotating shaft core 4 is located inside the second sleeve 2. A rotating guide groove 41 is provided on the outer wall of the rotating shaft core 4, and the rotating guide groove 41 is spirally arranged around the outer wall of the rotating shaft core 4; one end of the guide post 5 is connected to the inner wall of the second sleeve 2, and the other end of the guide post 5 is inserted into the rotating guide groove 41; one end of the elastic member 6 is connected to the second sleeve 2, and the other end of the elastic member 6 abuts against the rotating shaft core 4; the damper 7 is arranged in the first sleeve 1, and the movable shaft 71 of the damper 7 abuts against the rotating shaft core 4.

[0039] For the convenience of explanation, in this embodiment, each orientation is as Figure 1 shown. Specifically, the first sleeve 1 is located above the second sleeve 2.

[0040] In the buffer mechanism provided in this embodiment, the first sleeve 1 and the second sleeve 2 are mainly used to connect two connecting parts of the hinge. The first sleeve 1 and the second sleeve 2 can realize the rotation function of the entire hinge by rotating relative to each other. When the first sleeve 1 rotates, it drives the rotating shaft core 4 to rotate through the transmission shaft sleeve 3. Since the rotating shaft core 4 is provided with a spirally arranged rotating guide groove 41 and the second sleeve 2 is provided with a guide post 5, the rotating shaft core 4 will move axially along the rotating shaft core 4 while rotating. Specifically, during the process of the hinge closing to opening, the rotating shaft core 4 will move towards the elastic member 6 while rotating. At this time, the elastic member 6 will be in a compressed state. During the process of the hinge opening to closing, the elastic member 6 will release its own elastic potential energy, push the rotating shaft core 4 to move towards the direction of the first sleeve, and the rotating shaft core 4 drives the movable shaft 71 of the damper 7 to move. The damper 7 can offset part of the elastic potential energy of the elastic member 6, so that the rotating shaft core 4 can slide slowly, thereby realizing the buffer effect. Compared with the existing hydraulic buffer mechanism, the overall structure of the buffer mechanism of the present utility model is simpler, and there is no need to consider the oil circuit problem. The buffer can be realized by a simple mechanical mechanism, is not easy to be damaged, has a longer service life, and can better adapt to different door leaves, has better adaptability and is more convenient to use.

[0041] In this embodiment, the elastic member 6 is a spring, which can provide stable elastic force. In some embodiments, the elastic member 6 can also be an elastic part such as a spring piece or a rubber block.

[0042] In some embodiments, the rotation guide groove 41 includes a spiral section 42 and a horizontal section 43. The spiral section 42 is spirally arranged around the outer wall of the rotation axis core 4, and the horizontal section 43 is arranged around the outer wall of the rotation axis core 4 along the circumferential direction of the rotation axis core 4. The projection of the spiral section 42 along the axial direction of the rotation axis core 4 is a quarter circle arc, and the projection of the horizontal section 43 along the axial direction of the rotation axis core 4 is a quarter circle arc.

[0043] Specifically, by setting the spiral section 42, the rotation axis core 4 can move up and down while rotating. During the process of the hinge being opened from the closed state, the rotation axis core 4 will move downward while rotating. At this time, the elastic member 6 will be in a compressed state. If the horizontal section 43 is not set, after rotation, the elastic force of the elastic member 6 will immediately cause the rotation axis core 4 to move upward. At this time, the hinge cannot maintain the open state, that is, the doors and windows cannot maintain the open state, and it is not convenient to use. By setting the horizontal section 43 parallel to the horizontal plane, the guide post 5 can enter the horizontal section 43 from the inclined spiral section 42. At this time, the guide post 5 cannot move up and down. Therefore, at this time, the elastic force of the elastic member 6 cannot drive the rotation axis core 4 to move upward. At this time, the hinge can maintain the open state, that is, the doors and windows can maintain the open state. When it is necessary to close the hinge, the doors and windows can be pushed by hand to make the rotation axis core 4 rotate, and the guide post 5 can enter the spiral section 42 from the horizontal section 43. At this time, the elastic force of the elastic member 6 can push the rotation axis core 4 upward. At this time, it is no longer necessary to push by hand, and the doors and windows can be closed, which is more convenient to use.

[0044] In some embodiments, the number of both the rotation guide groove 41 and the guide post 5 is two. The two guide posts 5 are respectively inserted into the two rotation guide grooves 41, and the two rotation guide grooves 41 are arranged in central symmetry about the axis of the rotation axis core 4, and the guiding effect is better.

[0045] In some embodiments, one end of the guide post 5 close to the rotation guide groove 41 is hemispherical, and stop positions 44 are provided at both ends of the rotation guide groove 41. The stop positions 44 are hemispherical grooves adapted to the guide post 5, which can make the guide post 5 better maintained in the horizontal section 43, so that the hinge can maintain the open state and is more convenient to use.

[0046] In some embodiments, the guide post 5 includes a limit ball cover 51 and a ball 52. The limit ball cover 51 is connected to the second sleeve 2. A ball groove is provided on the side of the limit ball cover 51 facing the ball 52. The ball 52 is restricted between the ball groove of the limit ball cover 51 and the rotation guide groove 41. The ball 52 can roll relative to the limit ball cover 51 and the rotation guide groove 41. By setting the ball 52, the rotation of the rotation axis core 4 can be made smoother.

[0047] In some embodiments, the buffer mechanism further includes a first adjusting member 8. The first adjusting member 8 is threadedly connected to the first sleeve 1 and can abut against one end of the damper 7 away from the rotation axis core 4. Specifically, an internal hexagonal hole is provided at the upper end of the first adjusting member 8. When it is necessary to adjust the damping force of the damper 7, a tool can be used to screw the first adjusting member 8, thereby changing the position of the first adjusting member 8 in the first sleeve 1, and then the position of the damper 7 can be adjusted, so as to adjust the damping force of the damper 7, which is more convenient to adjust.

[0048] In some embodiments, the buffer mechanism further includes a second adjusting member 9. The second adjusting member 9 is threadedly connected to the second sleeve 2 and can abut against one end of the elastic member 6 away from the rotation axis core 4. Specifically, an internal hexagonal hole is provided at the lower end of the second adjusting member 9. When it is necessary to adjust the elastic strength of the spring, a tool can be used to screw the second adjusting member 9, thereby changing the position of the second adjusting member 9 in the second sleeve 2, and then the compression amplitude of the elastic member 6 can be adjusted, so as to adjust the pushing force of the elastic member 6 on the rotation axis core 4, that is, to adjust the force and speed when the hinge is closed, which is more convenient to adjust.

[0049] In some embodiments, the buffer mechanism further includes a locking member 10. A locking hole is provided on the outer wall of the first sleeve 1. The locking member 10 is threadedly connected to the locking hole and abuts against the transmission shaft sleeve 3. Specifically, an internal hexagonal hole is provided on the outer side of the locking member 10. By using a tool to screw the locking member 10, the fixing of the transmission shaft sleeve 3 in the first sleeve 1 can be completed, and the operation is more convenient.

[0050] In some embodiments, the transmission shaft sleeve 3 has a transmission insertion portion 31. A first anti-rotation hole for inserting the transmission insertion portion 31 is provided in the first sleeve 1. The cross-sections of the transmission insertion portion 31 and the first anti-rotation hole are both polygons that are mutually adapted. The rotation axis core 4 has an anti-rotation insertion portion 45. A second anti-rotation hole for inserting the anti-rotation insertion portion 45 is provided in the transmission shaft sleeve 3. The cross-sections of the anti-rotation insertion portion 45 and the second anti-rotation hole are both polygons that are mutually adapted. Through a simple structure, the first sleeve 1 and the transmission shaft sleeve 3 can be prevented from rotating relative to each other, and the rotation axis core 4 and the transmission shaft sleeve 3 can also be prevented from rotating relative to each other, playing a conversion function of rotational connection.

[0051] In some embodiments, as Figure 4 and Figure 5 shown, the shape of the anti-rotation insertion portion 45 is a hexagon, and the second anti-rotation hole is a hexagon adapted to the anti-rotation insertion portion 45, which can better prevent relative rotation between the rotation axis core 4 and the transmission shaft sleeve 3 and can better play the conversion function of rotational connection.

[0052] In some embodiments, the buffer mechanism further includes a first plain bearing 11 and a second plain bearing 12. The first plain bearing 11 is disposed between the first sleeve 1 and the second sleeve 2, and the second plain bearing 12 is disposed within the second sleeve 2. The second plain bearing 12 is located between the transmission shaft sleeve 3 and the second sleeve 2, which can provide a smooth rotation function and a better user experience.

[0053] As Figure 6 shown, the present utility model further provides a buffer hinge, which includes a first connecting member 13, a second connecting member 14, and the above buffer mechanism. The first connecting member 13 has a first connecting portion and a second connecting portion. The first connecting portion is connected to the first sleeve 1 and cannot rotate relative to the first sleeve 1, and the second connecting portion is rotatably connected to the second sleeve 2. The second connecting member 14 is connected to the second sleeve 2.

[0054] In the buffer hinge provided in this embodiment, the above buffer mechanism is adopted, which can provide a good buffering effect for the relative rotation between the first connecting member 13 and the second connecting member 14, with a better buffering effect, better applicability, and more convenient use.

[0055] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A buffer mechanism, characterized in that, Comprising: A first sleeve (1); A second sleeve (2), the second sleeve (2) being rotatable relative to the first sleeve (1); A drive shaft sleeve (3), one end of the drive shaft sleeve (3) being connected to the first sleeve (1), the other end of the drive shaft sleeve (3) being connected to the second sleeve (2), the drive shaft sleeve (3) being rotatable relative to the second sleeve (2); A rotating shaft core (4), one end of the rotating shaft core (4) being inserted into the drive shaft sleeve (3) and not being rotatable relative to the drive shaft sleeve (3), the other end of the rotating shaft core (4) being located within the second sleeve (2), a rotating guide groove (41) being provided on the outer wall of the rotating shaft core (4), the rotating guide groove (41) being spirally arranged around the outer wall of the rotating shaft core (4); A guide post (5), one end of the guide post (5) being connected to the inner wall of the second sleeve (2), the other end of the guide post (5) being inserted into the rotating guide groove (41); An elastic member (6), one end of the elastic member (6) being connected to the second sleeve (2), the other end of the elastic member (6) abutting against the rotating shaft core (4); A damper (7), the damper (7) being provided on the first sleeve (1), the movable shaft (71) of the damper (7) abutting against the rotating shaft core (4).

2. The buffer mechanism according to claim 1, wherein The rotating guide groove (41) includes a spiral section (42) and a horizontal section (43), the spiral section (42) being spirally arranged around the outer wall of the rotating shaft core (4), the horizontal section (43) being arranged around the outer wall of the rotating shaft core (4) along the circumferential direction of the rotating shaft core (4), the projection of the spiral section (42) along the axial direction of the rotating shaft core (4) being a quarter circle arc, and the projection of the horizontal section (43) along the axial direction of the rotating shaft core (4) being a quarter circle arc.

3. The buffer mechanism according to claim 1, characterized in that, The number of the rotating guide grooves (41) and the guide posts (5) is two each, the two guide posts (5) being respectively inserted into the two rotating guide grooves (41), and the two rotating guide grooves (41) being centrally symmetrically arranged about the axis of the rotating shaft core (4).

4. The buffer mechanism according to claim 1, characterized in that One end of the guide post (5) close to the rotating guide groove (41) is hemispherical, and stop positions (44) are provided at both ends of the rotating guide groove (41), the stop positions (44) being hemispherical grooves adapted to the guide post (5).

5. The buffer mechanism according to claim 1, characterized in that, The buffer mechanism further includes a first adjusting member (8), the first adjusting member (8) being threadedly connected to the first sleeve (1) and being able to abut against one end of the damper (7) away from the rotating shaft core (4).

6. The buffer mechanism according to claim 1, characterized in that, The buffer mechanism further includes a second adjusting member (9), the second adjusting member (9) being threadedly connected to the second sleeve (2) and being able to abut against one end of the elastic member (6) away from the rotating shaft core (4).

7. The buffer mechanism according to claim 1, characterized in that The buffer mechanism further includes a locking member (10), a locking hole being provided on the outer wall of the first sleeve (1), the locking member (10) being threadedly connected to the locking hole and abutting against the drive shaft sleeve (3).

8. The buffer mechanism according to claim 1, wherein The transmission shaft sleeve (3) has a transmission insertion part (31). A first anti-rotation hole for inserting the transmission insertion part (31) is provided in the first sleeve (1). The cross-sections of the transmission insertion part (31) and the first anti-rotation hole are both polygons that are adapted to each other. The rotating shaft core (4) has an anti-rotation insertion part (45). A second anti-rotation hole for inserting the anti-rotation insertion part (45) is provided in the transmission shaft sleeve (3). The cross-sections of the anti-rotation insertion part (45) and the second anti-rotation hole are both polygons that are adapted to each other.

9. The buffer mechanism according to claim 1, characterized in that, The buffer mechanism further includes a first plain bearing (11) and a second plain bearing (12). The first plain bearing (11) is provided between the first sleeve (1) and the second sleeve (2). The second plain bearing (12) is provided in the second sleeve (2). The second plain bearing (12) is located between the transmission shaft sleeve (3) and the second sleeve (2).

10. A buffer hinge, characterized in that, It includes a first connecting member (13), a second connecting member (14) and the buffer mechanism according to any one of claims 1 to 9. The first connecting member (13) has a first connecting part and a second connecting part. The first connecting part is connected to the first sleeve (1) and cannot rotate relative to the first sleeve (1). The second connecting part is rotatably connected to the second sleeve (2). The second connecting member (14) is connected to the second sleeve (2).

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