hinge

Abstract

The utility model provides a hinge, including casing, pivot, buffer device and first piston, the casing is equipped with the cavity, be equipped with first cam surface on the pivot, first piston is located in the cavity and can reciprocate along the cavity axial motion, first piston is equipped with first groove body to one end of pivot, one side of first groove body is equipped with second groove body with first groove body intercommunication away from the pivot, first gyro wheel is movably arranged in the first groove body, be equipped with a plurality of side -by -side and mutual contact's roll axle in second groove body, a plurality of roll axle is along the circumferential side surface arrangement of first gyro wheel, buffer device provides the resistance force and makes the circumferential side surface of first gyro wheel respectively resist in first cam surface and roll axle. The utility model discloses the pivot rotation is more smooth and the transmission is more stable.

Description

Technical Field

[0001] This utility model relates to a hinge, and more particularly to a hinge that allows for smoother and more stable rotation of the pivot. Background Technology

[0002] Hinges are devices used to connect doors to the floor and provide cushioning when the door rotates; hinges are sometimes called floor springs. To ensure smooth rotation of the hinge's pivot, a roller is mounted on the piston, allowing it to rotate when it abuts against a cam. For example, the floor spring disclosed in CN202718509U has a rotatable roller on the piston. The roller rolls in contact with the outer circumference of the cam. As the cam rotates, the roller rolls along the outer circumference of the cam, causing the spring to undergo elastic deformation. The roller is fixed to the end of the piston via a central fixed shaft. This method has the following disadvantages: frequent rotation of the roller can cause loosening between the roller and the fixed shaft over time, or the fixed shaft may bend due to pressure, thus affecting the roller's performance, resulting in uneven rotation of the pivot and poor transmission stability. Utility Model Content

[0003] Therefore, it is necessary to provide a hinge that allows for smoother shaft rotation and more stable transmission.

[0004] This utility model provides a hinge, the hinge comprising:

[0005] The housing has a cavity;

[0006] A rotating shaft, wherein a first cam surface is provided on the rotating shaft;

[0007] Buffer device;

[0008] A first piston is disposed in the cavity and can reciprocate along the axial direction of the cavity. A first groove is provided at one end of the first piston facing the rotating shaft. A second groove communicating with the first groove is provided on the side of the first groove facing away from the rotating shaft. A first roller is movably disposed in the first groove. A plurality of rollers are disposed in the second groove and are arranged side by side and in contact with each other. The plurality of rollers are arranged along the circumferential side surface of the first roller. The buffer device provides a supporting force so that the circumferential side surface of the first roller abuts against the first cam surface and the rollers respectively.

[0009] Furthermore, the plurality of rollers are arranged symmetrically with respect to a vertical plane relative to the axis passing through the first piston.

[0010] Furthermore, the first cam surface includes a first positioning surface and a second positioning surface at different circumferential positions. When the first piston abuts against the first positioning surface via the first roller, the rotating shaft is at a first angle. When the first piston abuts against the second positioning surface via the first roller, the rotating shaft is at a second angle.

[0011] The rotating shaft is also provided with a second cam surface;

[0012] The hinge also includes:

[0013] Second piston;

[0014] A buffer mechanism is connected to the second piston to provide a holding force against the second cam surface to the second piston, thereby providing a driving force during the rotation of the shaft from the first angle to the second angle and a damping force during the rotation from the second angle to the first angle.

[0015] Furthermore, the first piston and the second piston are on the same side of the rotating shaft, and the first piston and the second piston can slide relative to each other.

[0016] Furthermore, the side of the first groove and the second groove facing the second piston is an open surface, and the second piston closes the open surface to confine the first roller and the roller shaft in the first groove and the second groove, respectively.

[0017] Furthermore, the first piston has a notch, and the first piston includes a first sliding surface located in the notch and a second sliding surface that slides in contact with the side wall of the cavity. The first sliding surface is parallel to the axis of the first piston. The second piston is disposed in the notch, and the second piston includes a third sliding surface that contacts the first sliding surface and a fourth sliding surface that slides in contact with the side wall of the cavity. The third sliding surface confines the first roller and the roller shaft in the first groove and the second groove, respectively.

[0018] Furthermore, the second piston has a third groove on the side facing the rotating shaft, and a second roller is provided in the third groove, with the peripheral side of the second roller abutting against the second cam surface.

[0019] Furthermore, the side of the third groove facing the first sliding surface is an open surface, and the bottom surface of the second roller constitutes a part of the third sliding surface.

[0020] Furthermore, the number of rollers is 4-6.

[0021] The present invention has the following beneficial effects: When the rotating shaft rotates, the first cam surface abuts against the first roller and causes the first roller to rotate. On the one hand, the roller can make the first roller rotate more smoothly. On the other hand, the roller is located in the second groove, so that the abutting force along the first piston axis on the first roller can be directly applied to the roller. That is, the roller can stably abut against the first cam surface, thereby making the first roller more stable under force. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0023] Figure 2 for Figure 1 Sectional view.

[0024] Figure 3 for Figure 1 A partial structural diagram.

[0025] Figure 4 This is a schematic diagram of the specific structure of the rotating shaft of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0028] It should also be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Please see Figures 1-4 As shown, a specific embodiment of this utility model provides a hinge 100, which includes a housing 10, a cam component 20, a first piston 30, and a buffer device 40.

[0030] The housing 10 has a cavity 11, and the cam component 20 is installed near one end of the housing 10. A door can be installed on the cam component 20, and the housing 10 can be installed on the floor.

[0031] The first piston 30 is disposed in the cavity 11 and can reciprocate along the axial direction of the cavity 11. The buffer device 40 is disposed in the cavity 11, and the buffer device 40 is preferably a helical spring 40. The helical spring 40 provides a supporting force for the first piston 30 against the cam component 20. The other end of the helical spring 40 abuts against a fixing plate 12 fixed in the cavity 11.

[0032] See Figure 3 and Figure 4 As shown, the cam component 20 includes a rotating shaft 23 and a first cam surface 21 disposed on the rotating shaft 23, and the first piston 30 abuts against the first cam surface 21.

[0033] When the cam component 20 rotates, the first piston 30 reciprocates axially within the cavity 11, causing it to compress and release the helical spring 40. The helical spring 40 then twists, causing the first piston 30 to rotate circumferentially. This prevents the first piston 30 from properly contacting the cam component 20, affecting the transmission and leading to instability. Furthermore, the helical spring 40 undergoes eccentric movement, subjecting the first piston 30 to eccentric compression, causing its side to press against the sidewall of the cavity 11. This hinders the smooth sliding of the first piston 30 and obstructs the rotation of the shaft 23.

[0034] In this regard, this utility model combines Figure 2 and Figure 3 As shown, a separator 70 is provided between the first piston 30 and the helical spring 40. The separator 70 is disposed in the cavity 11 and spaced apart from the side wall of the cavity 11, with a movable space A between them, allowing the separator 70 to move radially relative to the cavity 11. A ball bearing 72 is provided between the separator 70 and the first piston 30. The helical spring 40 abuts against the separator 70, and the separator 70 abuts against the first piston 30 via the ball bearing 72. The separator 70 is preferably a sheet 12 with a circular circumferential profile.

[0035] When the helical spring 40 undergoes torsion and eccentric movement, its reverse force will act on the separator 70. The separator 70, relying on the ball 72, will rotate and move radially relative to the first piston 30. The first piston 30 can reduce the circumferential and radial forces it receives, so that the first piston 30 and the cam component 20 fit together better and the first piston 30 slides more smoothly relative to the cavity 11.

[0036] An annular groove 71 is provided on the side of the separator 70 facing the first piston 30, and the ball 72 is disposed in the annular groove 71 to facilitate the installation of the ball 72. Alternatively, an annular groove for installing the ball 72 may be provided on the side of the first piston 30 facing the separator 70.

[0037] See Figure 3 As shown, the first piston 30 has a first groove 31 at one end facing the rotating shaft 23. The sidewall of the first groove 31 is arc-shaped. A second groove 32, communicating with the first groove 31, is located on the side of the first groove 31 facing away from the rotating shaft 23, such that the vertical plane passing through the axis of the first piston 30 passes through the second groove 32. A first roller 311 is movably disposed in the first groove 31, and a plurality of rollers 321 arranged side by side and in contact with each other are disposed in the second groove 32. The plurality of rollers 321 are arranged along the circumferential side of the first roller 311. Under the action of the helical spring 40, the circumferential side of the first roller 311 abuts against the first cam surface 21 and the rollers 321 respectively.

[0038] The number of rollers 321 is 4-6, and in the figure, the number of rollers 321 is 6.

[0039] When the rotating shaft 23 rotates, the first cam surface 21 abuts against the first roller 311 and causes the first roller 311 to rotate. The roller 321 allows the first roller 311 to rotate more smoothly. On the other hand, the roller 321 is located in the second groove 32, and the supporting force along the axial direction of the first piston 30 on the first roller 311 can be directly applied to the roller 321. That is, the roller 321 can stably abut the first roller 311 against the first cam surface 21, thereby making the force on the first roller 311 more stable.

[0040] The cam component 20 further includes a second cam surface 22 disposed on the rotating shaft 23. The second cam surface 22 and the first cam surface 21 are located at different positions and angles along the axial direction of the rotating shaft 23.

[0041] See Figure 4 As shown, the first cam surface 21 includes a first positioning surface 211 and a second positioning surface 212 at different circumferential positions. When the first piston 30 abuts against the first positioning surface 211 via the first roller 311, the rotating shaft 23 is at a first angle (closed or open). When the first piston 30 abuts against the second positioning surface 212 via the first roller 311, the rotating shaft 23 is at a second angle (open or closed). The first angle and the second angle can differ by 90°.

[0042] Preferably, the rotating shaft 23 is closed when it is at the first angle and open when it is at the second angle. The first cam surface 21 includes two symmetrically arranged second positioning surfaces 212, so that the door can be positioned by different second positioning surfaces 212 when it can be opened inward or outward.

[0043] A convex surface 213 is provided between the first positioning surface 211 and the second positioning surface 212. When the first roller 311 is on the convex surface 213, it will compress the helical spring 40.

[0044] The rotating shaft 23 is provided with two symmetrically arranged second cam surfaces 22, and the two second cam surfaces 22 are connected to form a protrusion 221, which protrudes from the second positioning surface 211.

[0045] Continue reading Figure 2 and Figure 3As shown, a second piston 50 and a buffer mechanism 60 are also provided in the cavity 11. The buffer mechanism 60 is connected to the second piston 50 to provide a holding force to the second piston 50 against the second cam surface 22. The second cam surface 22, the second piston 50, and the buffer mechanism 60 are used to provide the driving force of the rotating shaft 23 from the first angle to the second angle and to provide the damping force of the rotating shaft 23 from the second angle to the first angle.

[0046] The first piston 30 and the second piston 50 are located on the same side of the rotating shaft 23, and the first piston 30 and the second piston 50 can slide relative to each other. This allows the rotating shaft 23 to be as close as possible to one end of the housing 10, so that when a door is installed on the rotating shaft 23, the side of the door can be closer to the wall.

[0047] The buffer mechanism 60 includes a connecting rod 61 and a buffer 62. The connecting rod 61 is connected to the buffer 62. The connecting rod 61 extends axially along the cavity 11 and passes through the partition 70. The buffer 62 is located at the end of the helical spring 40 away from the first piston 30.

[0048] Specifically, the side of the first groove 31 and the second groove 32 facing the second piston 50 is an open surface, and the second piston 50 closes the open surface, so that the first roller 311 and the roller 321 are respectively confined in the first groove 31 and the second groove 32 to prevent them from moving along their respective axial directions. During installation, the first roller 311 and the roller 321 can be inserted through the open surface, and then the second piston 50 is installed, which facilitates the installation of the first roller 311 and the roller 321.

[0049] The first piston 30 forms a notch 33, and the first piston 30 includes a first sliding surface 301 located in the notch 33 and a second sliding surface 302 that slides in contact with the side wall of the cavity 11. The first sliding surface 301 is parallel to the axis of the first piston 30.

[0050] The second piston 50 is disposed in the notch 33, and the radial cross-sectional shape of the second piston 50 is substantially the same as that of the notch 33. The second piston 50 includes a third sliding surface 501 that contacts the first sliding surface 301 and a fourth sliding surface 502 that slides in contact with the side wall of the cavity 11. This allows the cross-sectional size of the cavity 11 to be configured to be substantially the same as that of the first piston 30, thereby reducing the height of the hinge 100.

[0051] The first roller 311 and the roller 321 are respectively confined in the first groove 31 and the second groove 32 by the third sliding surface 501.

[0052] The second piston 50 has a third groove 51 on the side facing the rotating shaft 23, and a second roller 511 is provided in the third groove 51. The peripheral side of the second roller 511 abuts against the second cam surface 22.

[0053] The side of the third groove 51 facing the first sliding surface 301 is an open surface, and the bottom surface of the second roller 511 forms part of the third sliding surface 501, which facilitates the installation of the second roller 511.

[0054] The first piston 30 has an inner cavity 303 that extends along the axis of the first piston 30 and communicates with the notch 33. The connecting rod 61 passes through the inner cavity 303 and is slidably connected to the first piston 30. The second piston 50 abuts against the connecting rod 61. When the second piston 50 reciprocates, it causes the connecting rod 61 to slide relative to the first piston 30, and then provides damping buffer through the buffer 62.

[0055] During installation, the connecting rod 61 is inserted into the inner cavity 303, and then the first piston 30 is assembled into the notch 33 to facilitate the installation and connection of the first piston 30 and the connecting rod 61.

[0056] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0057] Some features of this invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of this invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hinge, characterized in that, The hinge includes: The housing has a cavity; A rotating shaft, wherein a first cam surface is provided on the rotating shaft; Buffer device; A first piston is disposed in the cavity and can reciprocate along the axial direction of the cavity. A first groove is provided at one end of the first piston facing the rotating shaft. A second groove communicating with the first groove is provided on the side of the first groove facing away from the rotating shaft. A first roller is movably disposed in the first groove. A plurality of rollers are disposed in the second groove and are arranged side by side and in contact with each other. The plurality of rollers are arranged along the circumferential side of the first roller. The buffer device provides a supporting force so that the circumferential side of the first roller abuts against the first cam surface and the rollers respectively.

2. The hinge according to claim 1, characterized in that, The plurality of rollers are arranged symmetrically with respect to a vertical plane relative to the axis passing through the first piston.

3. The hinge according to claim 1, characterized in that: The first cam surface includes a first positioning surface and a second positioning surface at different circumferential positions. When the first piston abuts against the first positioning surface via the first roller, the rotating shaft is at a first angle. When the first piston abuts against the second positioning surface via the first roller, the rotating shaft is at a second angle. The rotating shaft is also provided with a second cam surface; The hinge also includes: Second piston; A buffer mechanism is connected to the second piston to provide a holding force against the second cam surface to the second piston, thereby providing a driving force during the rotation of the shaft from the first angle to the second angle and a damping force during the rotation from the second angle to the first angle.

4. The hinge according to claim 3, characterized in that, The first piston and the second piston are on the same side of the rotating shaft, and the first piston and the second piston can slide relative to each other.

5. The hinge according to claim 4, characterized in that, The first groove and the second groove face the second piston as open surfaces, and the second piston closes the open surfaces to confine the first roller and the roller shaft in the first groove and the second groove, respectively.

6. The hinge according to claim 5, characterized in that, The first piston has a notch and includes a first sliding surface located in the notch and a second sliding surface that slides in contact with the side wall of the cavity. The first sliding surface is parallel to the axis of the first piston. The second piston is disposed in the notch and includes a third sliding surface that contacts the first sliding surface and a fourth sliding surface that slides in contact with the side wall of the cavity. The third sliding surface confines the first roller and the roller shaft in the first groove and the second groove, respectively.

7. The hinge according to claim 6, characterized in that, The second piston has a third groove on the side facing the rotating shaft, and a second roller is provided in the third groove. The peripheral side of the second roller abuts against the second cam surface.

8. The hinge according to claim 7, characterized in that, The side of the third groove facing the first sliding surface is an open surface, and the bottom surface of the second roller constitutes part of the third sliding surface.

9. The hinge according to claim 1, characterized in that, The number of rollers is 4-6.

Images