A type of buffer hinge

Abstract

This invention relates to the technical field of hardware accessories, specifically to a buffer hinge, comprising an arm, a cup head, and a buffer assembly. The buffer assembly includes a buffer cylinder and a stop. The rod of the buffer cylinder is fixedly installed on the cup head, and the cylinder body of the buffer cylinder is slidably installed on the outside of the cup head. The cup head has an arc-shaped hole. The stop is fixedly connected to the rocker arm and extends to the end of the cylinder body. When the hinge is closed, the stop moves and abuts against the end face of the cylinder body to make the cylinder body slide. This sliding and compression of the cylinder body achieves the buffering effect of the hinge. Advantages: When the hinge rotates in the closing direction, the rocker arm drives the stop to rotate, and the stop then abuts against the bottom surface of the cylinder body to drive the buffer cylinder to compress. That is, the stop compresses the buffer cylinder by driving the cylinder body. The cylinder body is made of metal, and the abutment and friction between the stop and the cylinder body can reduce the wear of the components and improve the service life of the buffer assembly.

Description

Technical Field

[0001] This invention relates to the technical field of hardware accessories, and in particular to a buffer hinge. Background Technology

[0002] Hinges are accessories mounted on devices such as doors, windows, and cabinets that require relative rotation. They usually consist of two or more moving parts. Hinges allow the moving parts of an object to rotate relative to a fixed part. Cup hinges are a type of hinge. Cup hinges are usually installed on cabinets, allowing the cabinet door to rotate relative to the cabinet body. Cup hinges include a cup head and an arm. The cup head is hinged to the arm and can rotate relative to it. Cup hinges with a buffer component are provided. When the cup head rotates relative to the arm, the buffer component can play a buffering role to reduce the impact force generated when the door closes towards the cabinet body, and play a buffering and damping role in the rotation between the door and the cabinet body. In existing hinges where a buffer cylinder is installed in the cup head, when the cabinet door is closed, the cup head approaches the arm, and the rod of the buffer cylinder is pulled out to achieve a buffering effect. Thus, after the cabinet door is closed, the rod is in a pulled-out state relative to the cylinder body. For example, patent document CN 121701032A discloses a bidirectional buffer hardware hinge. This bidirectional buffer hardware hinge includes a base, a hinge cup, an upper connecting rod, and a lower connecting rod. The two ends of the upper and lower connecting rods are respectively hinged to the base and the hinge cup via corresponding hinge pins. The upper connecting rod, near the end that is hinged to the hinge cup, has a first extrusion arc surface and a second extrusion arc surface facing the hinge cup. A slidable linkage plate is provided inside the hinge cup, and the linkage plate has a force-receiving end that cooperates with the first and second extrusion arc surfaces. A buffer is provided between the hinge cup and the linkage plate. When the upper connecting rod swings in the closing direction, the first extrusion arc surface presses against the force-receiving end and pushes the linkage plate. By sliding and compressing the buffer, it can be seen that the first extrusion arc surface presses against the rod of the buffer cylinder to produce a buffering effect. The pressing process exerts a downward and inward force on the rod. Since the space available for installing the buffer cylinder in the cup head is relatively small compared to the arm body, the hinge installs the buffer cylinder in the cup head. The buffer cylinder needs to be a smaller size model, resulting in smaller rods and cylinder bodies. Moreover, the rod caps are mostly made of plastic. After long-term use, the rod caps are prone to wear, deformation, or shrinkage, causing the first extrusion arc surface to not make proper contact with it, resulting in a poor or ineffective buffering effect. In order to solve the above problems, the present invention provides a buffer hinge. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the issue that the hinge of the buffer cylinder installed on the cup head is prone to wear and deformation or shortening of the size after repeated use, which leads to a decrease or failure of the buffering effect of the hinge. The present invention provides a buffer hinge.

[0004] To achieve the above objectives, the present invention discloses a buffer hinge, comprising an arm body, a cup head, and a buffer assembly. The arm body is hinged to the cup head. The buffer assembly includes a buffer cylinder and a stop member. The rod of the buffer cylinder is fixedly installed on the cup head, and the cylinder body of the buffer cylinder is slidably installed on the outside of the cup head. The cup head has an arc-shaped hole. A rocker arm is hinged between the arm body and the cup head. The stop member is fixedly connected to the rocker arm and extends through the arc-shaped hole to the end of the cylinder body. When the hinge is closed, the rocker arm drives the stop member to move along the arc-shaped hole and abuts against the end face of the cylinder body, so that the cylinder body slides and compresses to achieve the buffering effect of the hinge.

[0005] A further embodiment is that the buffer cylinder is installed on the outer side wall of the cup head, and the arc-shaped hole is opened in the side wall of the cup head.

[0006] A further embodiment is that the side wall of the cup head is provided with a clearance opening, and the cylinder is disposed in the clearance opening.

[0007] A further embodiment includes a locking component, which further includes a plate and a knob. The plate is connected to the cylinder body, and the outer side of the plate is provided with teeth. The knob is installed on the cup head and is provided with a locking part. Rotating the knob controls the rotation of the locking part, so that the locking part can engage or disengage from the teeth, thereby preventing or allowing the extension of the buffer cylinder.

[0008] A further embodiment includes a cover, which is installed on the outer side wall of the cup head. The cover has a telescopic space, the shape of which is adapted to the shape of the cylinder, and the cylinder slides in the telescopic space.

[0009] A further embodiment includes a cap that is mounted on the rod of the buffer cylinder and snapped to the side wall of the clearance opening.

[0010] A further embodiment is that the side wall of the relief opening is recessed and provided with a first through groove, and the top surface of the cap is provided with two second through grooves so that the cap forms an I-shaped protrusion, the protrusion fitting into the first through groove.

[0011] A further embodiment is that the cover is provided with an arc-shaped clearance hole, and the abutment moves within the arc-shaped clearance hole.

[0012] A further embodiment is that the side of the cup head is provided with a first hook-shaped member, and the cover is provided with a second hook-shaped member. The first hook-shaped member extends from the relief opening to the cover to engage with the first hook-shaped hole of the cover, and the second hook-shaped member extends to the relief opening of the cup head to engage with the second hook-shaped hole.

[0013] A further embodiment is that the piece is L-shaped, the piece bends and extends to the bottom surface of the cylinder, and when the hinge rotates in the closing direction, the rocker arm drives the abutment to move, and the moving abutment abuts against the piece.

[0014] Compared to existing technologies, the advantages of this invention are as follows: When the hinge is in use, the arm and the cup head are respectively installed on the cabinet body and the cabinet door. When the hinge rotates from opening to closing, that is, when the cabinet door rotates from opening to closing, the rocker arm drives the abutment to move along the arc-shaped hole. The abutment abuts against the bottom surface of the cylinder body to make the cylinder body slide, causing the buffer cylinder to move in the contraction direction. The compression of the buffer cylinder achieves the buffering effect. Through the above arrangement, when the hinge rotates in the closing direction, the rocker arm drives the abutment to rotate, and the abutment abuts against the bottom surface of the cylinder body to drive the buffer cylinder to compress. That is, the abutment drives the cylinder body to compress the buffer cylinder. The cylinder body is made of metal, and the abutment abuts against the cylinder body. Compared with the prior art solution, that is, abutting against the rod head, the solution adopted by this invention can reduce the wear of the components and improve the service life of the buffer assembly.

[0015] When the hinge rotates towards the closed direction, the rocker arm drives the stop to rotate. When the stop drives the cylinder to compress or extend, the cylinder moves through the clearance port, so that part of the cylinder is located in the mounting cavity of the cup head and part of the cylinder is located on the outside of the cup head, thereby improving the space utilization of the cup head and further improving the compactness of the hinge structure.

[0016] Rotating the knob controls the locking part to rotate, and the locking part engages with the teeth. The locking part can block the extension of the buffer cylinder through the teeth, so that the buffer cylinder is separated from the movable stop. At this time, the buffering function of the buffer assembly is in the closed state. Rotating the knob controls the locking part to rotate, and the locking part makes way for the teeth, so that the locking part can also make way for the extension of the buffer cylinder, so that the buffer cylinder abuts against the movable stop. At this time, the buffering function of the buffer assembly is in the open state, so that the user can turn the buffering function of the hinge on or off as needed. Attached Figure Description

[0017] Figure 1 A first-view structural schematic diagram of a buffer hinge; Figure 2 A first-view structural schematic diagram of a buffer hinge; Figure 3 A schematic diagram of a buffer hinge from a second perspective; Figure 4 A schematic diagram of the structure of some components of a buffer hinge; Figure 5 A first-view structural schematic diagram of a partial component of a buffer hinge, with the buffer cylinder, plate, and cap in a detached state. Figure 6 A second-view structural schematic diagram of a partial component of a buffer hinge, with the buffer cylinder, plate, and cap in a detached state. Figure 7 A schematic diagram of the structure of a cup head with a buffer hinge; Figure 8 A first-view structural schematic diagram of a cover and knob for a buffer hinge; Figure 9 A second-view structural schematic diagram of a cover and knob for a buffer hinge; Figure 10 This is a structural schematic diagram of the assembled state of a buffer hinge, including a cover, a buffer cylinder, a plate, and a cap. Figure 11 This is a structural schematic diagram showing the assembled state of a buffer hinge, including a cover, buffer cylinder, plate, rocker arm, stop, and cap, with the cover partially cut apart.

[0018] Markings: 11. Arm body; 51. U-shaped part; 21. Cup head; 211. Arc-shaped hole; 212. Relief opening; 213. First through groove; 215. First hook-shaped part; 216. Second hook-shaped hole; 31. Rocker arm; 411. Abutment; 413. Buffer cylinder; 4131. Cap; 41311. Second through groove; 41312. Protrusion; 41313. Extension; 41314. Locking part; 4132. Cylinder body; 4133. Rod; 414. Plate; 4141. Tooth; 415. Knob; 4151. Locking part; 416. Cover; 4161. Telescopic space; 4162. Arc-shaped relief hole; 4163. First hook-shaped hole; 4164. Locking through groove; 4165. Second hook-shaped part; 52. Hinge hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the following will be combined with... Figure 1-11 The state shown is described in terms of orientation and structure.

[0020] Reference Figure 1-11As shown, the hinge disclosed in this invention is a cup-shaped hinge, specifically a buffer hinge, including an arm body 11, a cup head 21, a buffer assembly, and a U-shaped member 51. The cup head 21 is provided with a hinge hole 52, and the U-shaped member 51 passes through the hinge hole 52 to allow the arm body 11 and the cup head 21 to be hinged together via the U-shaped member 51. In use, the arm body 11 and the cup head 21 are respectively installed on the cabinet body and the cabinet door so that the cabinet door can be opened or closed around the cabinet body. Specifically, the buffer assembly includes a buffer cylinder 413. The cap 4131 and the stop 411 are mounted on the front end of the rod 4133 of the buffer cylinder 413. The cap 4131 is fixedly mounted on the cup head 21. The cylinder body 4132 of the buffer cylinder 413 is slidably mounted on the outside of the cup head 21. An arc-shaped hole 211 is provided on the side wall of the cup head 21. A rocker arm 31 is hinged between the arm body 11 and the cup head 21. The stop 411 is fixedly connected to the rocker arm 31. The stop 411 is located on one side of the U-shaped part 51 and extends to the cup head 21 through the arc-shaped hole 211. On the outer side of 1 and to the end of the cylinder 4132, when the hinge rotates from opening to closing, that is, when the cabinet door rotates from opening to closing, the rocker arm 31 drives the abutment 411 to move along the arc-shaped hole 211. The abutment 411 abuts against the bottom surface of the cylinder 4132 to make the cylinder 4132 slide, that is, abut against the end of the cylinder 4132, so that the buffer cylinder 413 moves in the contraction direction. The compression of the buffer cylinder 413 achieves the buffering effect. Through the above arrangement, when the hinge rotates in the closing direction, the rocker arm 31 moves in the contraction direction. 1. The abutment 411 is driven to rotate, and the abutment 411 then abuts against the bottom surface of the cylinder 4132 to drive the buffer cylinder 413 to compress. That is, the abutment 411 drives the cylinder 4132 to compress the buffer cylinder 413. The cylinder 4132 is made of metal, and the abutment 411 abuts and rubs against the cylinder 4132. Compared with the prior art solution, which abuts and rubs against the rod cap, the solution adopted by the present invention can reduce the wear of the components and improve the service life of the buffer assembly.

[0021] Since the buffer cylinder 413 is installed on the cup head 21, if the buffer cylinder 413 is installed on the outer side of the bottom surface of the cup head 21, the overall thickness of the cup head 21 will be increased, which will make the present invention unsuitable for thinner cabinet doors. To solve the above problem, the buffer cylinder 413 of the present invention is installed on the outer side wall of the cup head 21, and the diameter of the buffer cylinder 413 is smaller than the thickness of the cup head 21. The abutment 411 is installed on the side ear of the rocker arm 31. Through the above arrangement, the compactness of the hinge structure is improved, and the buffer cylinder 413 does not increase the thickness of the cup head 21, thereby making the present invention adaptable to the thickness of cabinet doors.

[0022] To further improve the compactness of the hinge structure of the present invention, the mounting cavity of the cup head 21 is wider at the front and narrower at the rear. A clearance opening 212 is provided on the side wall of the cup head 21. The buffer cylinder 413 passes through the clearance opening 212, and the cap 4131 is snapped to the side wall of the clearance opening 212 so that the cap 4131 is fixedly connected to the cup head 21. When the abutment 411 drives the cylinder 4132 to compress or the cylinder 4132 to extend, the cylinder 4132 moves through the clearance opening 212, so that part of the cylinder 4132 is located in the mounting cavity of the cup head 21 and part of the cylinder 4132 is located on the outside of the cup head 21, thereby improving the space utilization of the cup head 21 and further improving the compactness of the hinge structure.

[0023] The specific structure of the snap connection between the cap 4131 and the relief opening 212 is as follows: the side of the relief opening 212 is recessed with a first through groove 213, and two second through grooves 41311 are respectively opened on both sides of the cap 4131 to form an I-shaped protrusion 41312. The protrusion 41312 is fitted into the first through groove 213. In this way, the cap 4131 can be fixedly connected to the relief opening 212 by snap connection, that is, the cap 4131 is fixedly connected to the cup head 21.

[0024] Since the buffering requirements of cabinets may vary depending on the environment in which the hinges are installed, for example, when multiple sets of hinges are installed on the same cabinet door and cabinet body, if the buffering components of multiple sets of hinges work simultaneously, the closing speed of the cabinet door will be too slow. Therefore, it is necessary to set a switch in the buffering component of the hinge to enable or disable the buffering effect. To enable or disable the buffering effect, the present invention also includes a locking component, which includes a piece 414 and a knob 415. The piece 414 is fixedly connected to the side of the cylinder 4132, and the outer side of the piece 414 is provided with teeth 4141. The knob 415 is installed on the cup. On the head 21, the knob 415 is provided with a locking part 4151. Rotating the knob 415 controls the locking part 4151 to rotate, and the locking part 4151 engages with the tooth part 4141. The locking part 4151 can block the extension of the buffer cylinder 413 through the tooth part 4141, so that the buffer cylinder 413 is separated from the movable abutment 411. At this time, the buffering function of the buffer assembly is in the closed state. Rotating the knob 415 controls the locking part 4151 to rotate, and the locking part 4151 makes way for the tooth part 4141, so that the locking part 4151 can also make way for the extension of the buffer cylinder 413, so that the buffer cylinder 413 abuts against the movable abutment 411. At this time, the buffering function of the buffer assembly is in the open state.

[0025] The plate 414 is L-shaped and extends to the bottom surface of the cylinder 4132. When the hinge rotates in the closing direction, the rocker arm 31 drives the abutment 411 to move. The moving abutment 411 abuts against the plate 414, that is, the abutment 411 compresses the buffer cylinder 413 through the plate 414, thereby realizing the buffering effect of the hinge. With the above arrangement, the abutment 411 does not directly abut against the bottom surface of the cylinder 4132, but abuts against the plate 414, and then drives the buffer cylinder 413 to be compressed by bending backward, further reducing the wear of the cylinder 4132.

[0026] Since the buffer cylinder 413 of the present invention is installed on the outer side of the side wall of the cup head 21, that is, the buffer cylinder 413 is located on the outside, in order to protect the structure of the buffer cylinder 413, the buffer assembly of the present invention also includes a cover 416. The cover 416 is installed on the outer side of the side wall of the cup head 21. The cover 416 has a telescopic space 4161. The shape of the telescopic space 4161 is adapted to the shape of the cylinder body 4132. The cylinder body 4132 is slidably connected to the telescopic space 4161. Through the above arrangement, the telescopic space 4161 of the cover 416 plays a protective role for the cylinder body 4132. At the same time, the cover 416 also plays a supporting role for the cylinder body 4132.

[0027] To improve the integrity of the hinge and the smoothness of the outer side of the cup head 21, the cap 4131 of the present invention is also provided with an extension 41313. The extension 41313 is disposed on the side of the cap 4131, and the side of the extension 41313 and the side of the cover 416 are gradually and smoothly transitioned. Through the above-mentioned arrangement, the integrity of the cup head 21 is improved.

[0028] Since the abutment 411 needs to extend outward from the rocker arm 31 to the bottom surface of the cylinder 4132 to drive the cylinder 4132 to move, when the cover 416 is installed on the outside of the buffer cylinder 413, the cover 416 also needs to make way for the abutment 411. Therefore, the cover 416 of the present invention is provided with an arc-shaped clearance hole 4162, which is set towards the abutment 411. The abutment 411 moves in the arc-shaped clearance hole 4162. With the above arrangement, when the rocker arm 31 rotates and drives the abutment 411 to move to abut against the bottom surface of the cylinder 4132, the abutment 411 moves in the arc-shaped clearance hole 4162 to make way for the movement of the abutment 411.

[0029] The method of installing the cover 416 of the present invention onto the cup head 21 is as follows: the side of the cup head 21 is provided with a first hook-shaped member 215, and the cover 416 is provided with a first hook-shaped hole 4163. The first hook-shaped member 215 extends from the relief opening 212 to the cover 416 to fasten the first hook-shaped hole 4163 of the cover 416. When the cover 416 is assembled with the cup head 21, the first hook-shaped member 215 is located inside the first hook-shaped hole 4163. The upper side, lower side and one side of the first hook-shaped member 215 are all limited by the side of the first hook-shaped hole 4163, and the other side of the first hook-shaped member 215 is limited by the piece 414. Through the above arrangement, the assembly position of the cover 416 and the cup head 21 is relatively stable.

[0030] The upper and lower sides of the protrusion 41313 are both provided with a locking part 41314, and the cover 416 is provided with a locking through groove 4164. The locking part 41314 corresponds to the locking through groove 4164, and the locking part 41314 and the locking through groove 4164 are engaged to restrict the cover 416 from turning outward.

[0031] The abutment 411 can be connected to one side wall of the rocker arm 31 or to both side walls of the rocker arm 31. However, the abutment 411 of the present invention is connected to both side walls of the rocker arm 31 so that the rotating rocker arm 31 drives the abutment 411 to move. The advantage of connecting the abutment 411 to both side walls of the rocker arm 31 is that the rotation of the abutment 411 is more stable.

[0032] The cover 416 is also provided with a second hook-shaped part 4165, and the cup head 21 is also provided with a second hook-shaped hole 216. When the cover 416 and the cup head 21 are assembled, the second hook-shaped part 4165 and the second hook-shaped hole 216 are snapped together. It should be noted that the first hook-shaped part 215 and the first hook-shaped hole 4163, and the second hook-shaped part 4165 and the second hook-shaped hole 216 are respectively provided on both sides of the cover 416. Specifically, the first hook-shaped part 215 and the first hook-shaped hole 4163 are close to the tail of the cylinder 4132, and the first hook-shaped part 215 and the first hook-shaped hole 4163 are close to the head of the cylinder 4132. Through the above arrangement, the cover 416 and the cup head 21 are snapped together.

[0033] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They cannot be used to limit the scope of protection of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A buffer hinge, characterized in that, The device includes an arm body (11), a cup head (21), and a cushioning assembly. The arm body (11) is hinged to the cup head (21). The cushioning assembly includes a cushioning cylinder (413) and a stop (411). The rod (4133) of the cushioning cylinder (413) is fixedly installed on the cup head (21), and the cylinder body (4132) of the cushioning cylinder (413) is slidably installed on the outside of the cup head (21). The cup head (21) has an arc-shaped hole (211). The arm body (11) and the cup head... A rocker arm (31) is hinged between (21), and the abutment (411) is fixedly connected to the rocker arm (31) and extends through the arc hole (211) to the end of the cylinder (4132). When the hinge is closed, the rocker arm (31) drives the abutment (411) to move along the arc hole (211) and abuts against the end face of the cylinder (4132) through the abutment (411) so that the cylinder (4132) slides and compresses to realize the buffering effect of the hinge.

2. A buffer hinge according to claim 1, characterized in that, The buffer cylinder (413) is installed on the outer side of the side wall of the cup head (21), and the arc-shaped hole (211) is opened on the side wall of the cup head (21).

3. A buffer hinge according to claim 2, characterized in that, The cup head (21) has a relief opening (212) on its side wall, and the cylinder (4132) is disposed in the relief opening (212).

4. A buffer hinge according to claim 2, characterized in that, It also includes a locking assembly, which includes a piece (414) and a knob (415). The piece (414) is connected to the cylinder (4132). The outer side of the piece (414) is provided with teeth (4141). The knob (415) is mounted on the cup head (21) and the knob (415) is provided with a locking part (4151). Rotating the knob (415) controls the locking part (4151) to rotate, so that the locking part (4151) can engage or disengage from the teeth (4141), so that the locking part (4151) can block or allow the extension of the buffer cylinder (413).

5. A buffer hinge according to claim 2, characterized in that, The buffer assembly also includes a cover (416), which is installed on the outer side wall of the cup head (21). The cover (416) has a telescopic space (4161), the shape of which is adapted to the shape of the cylinder (4132), and the cylinder (4132) slides in the telescopic space (4161).

6. A buffer hinge according to claim 5, characterized in that, The buffer assembly also includes a cap (4131), which is mounted on the rod (4133) of the buffer cylinder (413) and is snapped to the side wall of the relief opening (212).

7. A buffer hinge according to claim 6, characterized in that, The side wall of the relief opening (212) is recessed and provided with a first through groove (213). The top surface of the cap (4131) is provided with two second through grooves (41311) so that the cap (4131) forms an I-shaped protrusion (41313). The protrusion (41313) is fitted into the first through groove (213).

8. A buffer hinge according to claim 5, characterized in that, The cover (416) is provided with an arc-shaped relief hole (4162), and the abutment (411) is movable in the arc-shaped relief hole (4162).

9. A buffer hinge according to claim 5, characterized in that, The cup head (21) has a first hook-shaped member (215) on its side, and the cover (416) has a second hook-shaped member (4165). The first hook-shaped member (215) extends from the relief opening (212) to the cover (416) to catch the first hook-shaped hole (4163) of the cover (416), and the second hook-shaped member (4165) extends to the relief opening (212) of the cup head (21) to catch the second hook-shaped hole (216).

10. A buffer hinge according to claim 4, characterized in that, The piece (414) is L-shaped and extends to the bottom surface of the cylinder (4132). When the hinge rotates in the closing direction, the rocker arm (31) drives the abutment (411) to move, and the moving abutment (411) abuts against the piece (414).

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