A hydraulic buffer hinge

Abstract

This utility model discloses a hydraulic buffer hinge, including a hinge body and a hinge cup. The hinge body includes a base, a hinge arm, an outer hinge arm, and an inner hinge arm. One end of the inner and outer hinge arms is hinged to the hinge arm, and the other ends of the outer and inner hinge arms are respectively hinged to the two ends of the U-shaped pin of the hinge cup. A cam is provided on the hinge cup. A buffer damper is provided on the outer hinge arm. The piston rod end of the buffer damper is connected to a stop pin, which is positioned opposite to the cam surface of the cam. The two ends of the stop pin are slidably disposed in corresponding guide grooves. When the cabinet door is closed, the hinge cup rotates towards the hinge arm, causing the stop pin of the buffer damper to abut against the cam surface. The cam compresses the piston rod upward, and the buffer damper prevents the outer hinge arm from rotating. This slows down the closing of the cabinet door, reduces the sound of the door closing, and avoids noise.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and more specifically, to a hydraulic buffer hinge. Background Technology

[0002] Hinges are common components used to connect two objects so that they can rotate relative to each other. Generally, such hinges consist of a cup-shaped component (hinge cup) mounted on a cabinet door and a hinge body mounted on the cup-shaped component via a folded connecting rod component (or arm component). The hinge body is mounted on the inner wall of the frame of the furniture or other storage object. When the door is closed, the connecting rod component is embedded in the cup-shaped component.

[0003] Existing hinges often lack damping, causing the cabinet door to violently impact the cabinet body when closed, resulting in damage to both the cabinet body and the door, and generating significant noise. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a hydraulic buffer hinge.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hydraulic buffer hinge includes a hinge body and a hinge cup. The hinge body includes a base, a hinge arm fixed to the base, an outer hinge arm, and an inner hinge arm. One end of the inner hinge arm and the outer hinge arm are hinged to the hinge arm, and the other ends of the outer hinge arm and the inner hinge arm are respectively hinged to the two ends of the U-shaped pin in the hinge cup. A cam is fixedly provided on the hinge cup.

[0007] A buffer damper is fixedly installed on the outer hinge arm, and a stop pin is connected to the piston rod end of the buffer damper. The stop pin is arranged opposite to the cam surface of the cam.

[0008] The left and right sides of the external hinge arm are provided with guide grooves, which are arranged along the extension and retraction direction of the piston rod. The two ends of the abutment pin are respectively slidably arranged in the corresponding guide grooves.

[0009] When the cabinet door is closed, the hinge cup rotates toward the hinge arm, causing the outer and inner hinge arms to rotate. This causes the abutment pin of the damper to abut against the cam surface, and the cam compresses the piston rod upward. The damper then prevents the outer hinge arm from rotating.

[0010] The present invention further includes: an installation cavity for mounting a buffer damper is provided on the outer hinge arm, and a clip for fixing the buffer damper is provided at the opening of the installation cavity.

[0011] The present invention further comprises: the jacket includes a jacket body and fixing plates disposed on both sides of the jacket body, the fixing plates being fixed to the outer hinge arm by welding.

[0012] The present invention further includes: the cam is provided with a mounting hole and a mounting groove, one end of the U-shaped needle passes through the mounting hole and the other end is placed in the mounting groove, thereby fixing the cam to the hinge cup.

[0013] The beneficial effects of this utility model are as follows: The hinge cup of this hydraulic buffer hinge is provided with a cam, and a buffer damper is provided on the outer hinge arm. The piston rod end of the buffer damper is connected to a stop pin. When the cabinet door is closed, the hinge cup rotates, and the stop pin abuts against the cam surface. The cam compresses the piston rod upward, and the buffer damper prevents the outer hinge arm from rotating. This slows down the closing of the cabinet door, prevents the cabinet door from violently impacting the cabinet body, better protects the cabinet body and the cabinet door, and reduces the sound of the cabinet door closing, avoiding noise. At the same time, the buffer hinge has a simple structure and low manufacturing cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a hydraulic buffer hinge according to the present invention;

[0015] Figure 2 This is a schematic diagram of a hydraulic buffer hinge with the outer hinge arm removed according to the present invention.

[0016] Figure 3 This is a cross-sectional view of the front end of a hydraulic buffer hinge according to the present invention.

[0017] Figure 4 For the cooperation between the buffer damper and the cam Figure 1 ;

[0018] Figure 5 For the cooperation between the buffer damper and the cam Figure 2 ;

[0019] Figure 6 This is a schematic diagram of the external hinge arm.

[0020] Figure 7 This is a schematic diagram of the jacket structure;

[0021] Figure 8 This is a schematic diagram of the cam structure;

[0022] Explanation of reference numerals in the attached drawings: 1. Hinge body; 11. Base; 12. Hinge arm; 13. Outer hinge arm; 131. Guide groove; 132. Mounting cavity; 14. Inner hinge arm; 2. Hinge cup; 21. Cam; 211. Cam surface; 212. Mounting hole; 213. Mounting groove; 3. U-shaped pin; 4. Buffer damper; 41. Piston rod; 42. Abutment pin; 5. Clip; 51. Clip body; 52. Fixing plate. Detailed Implementation

[0023] See attached document Figure 1-8 A more detailed description of an embodiment of the hydraulic buffer hinge of this utility model is provided below.

[0024] A hydraulic buffer hinge includes a hinge body 1 and a hinge cup 2. The hinge body 1 includes a base 11, a hinge arm 12 fixed to the base 11, an outer hinge arm 13, and an inner hinge arm 14. The hinge cup 2 is fixed to a cabinet door, and the hinge body 1 is fixed to a cabinet side panel via the base 11. One end of the inner hinge arm 14 and the outer hinge arm 13 are hinged to the hinge arm 12, and the other ends of the outer hinge arm 13 and the inner hinge arm 14 are respectively hinged to the two ends of the U-shaped pin 3 of the hinge cup 2. A cam 21 is fixedly provided on the hinge cup 2.

[0025] A buffer damper 4 is fixedly installed on the outer hinge arm 13. A stop pin 42 is connected to the end of the piston rod 41 of the buffer damper 4. The stop pin 42 is arranged opposite to the cam surface 211 of the cam 21.

[0026] The left and right sides of the outer hinge arm 13 are provided with guide grooves 131, which are arranged along the extension and retraction direction of the piston rod 41. The two ends of the abutment pin 42 are respectively slidably arranged in the corresponding guide grooves 131.

[0027] When the cabinet door is closed, the hinge cup 2 rotates toward the hinge arm 12, causing the outer hinge arm 13 and the inner hinge arm 14 to rotate. This causes the abutment pin 42 of the buffer damper 4 to abut against the cam surface 211. The cam 21 compresses the piston rod 41 upwards, and the buffer damper 4 prevents the outer hinge arm 13 from rotating. This slows down the closing of the cabinet door, preventing the door from violently impacting the cabinet body and better protecting the cabinet body and door. It also reduces the sound of the door closing and avoids noise. In addition, the buffer hinge has a simple structure and low manufacturing cost.

[0028] The outer hinge arm 13 is provided with a mounting cavity 132 for mounting the buffer damper 4. The opening of the mounting cavity 132 is provided with a clip 5 for fixing the buffer damper 4. The clip 5 includes a clip body 51 and fixing plates 52 provided on both sides of the clip body 51. The fixing plates 52 are fixed to the outer hinge arm 13 by welding, so that the buffer damper 4 is firmly installed on the outer hinge arm 13. The assembly method is simple and the manufacturing cost is low.

[0029] The cam 21 is provided with a mounting hole 212 and a mounting groove 213. One end of the U-shaped pin 3 passes through the mounting hole 212 and the other end is placed in the mounting groove 213 to fix the cam 21 to the hinge cup 2. The U-shaped pin 3 is used to install the outer hinge arm 13 and the inner hinge arm 14 on the hinge cup 2, and at the same time to fix the cam 21, making the assembly of the hinge accessory more convenient and the cost lower.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A hydraulically damping hinge, comprising a hinge body and a hinge cup, wherein the hinge body includes a base, a hinge arm fixed to the base, an outer hinge arm, and an inner hinge arm; one end of each of the inner and outer hinge arms is hinged to the hinge arm, and the other ends of the outer and inner hinge arms are respectively hinged to the two ends of a U-shaped pin in the hinge cup; characterized in that: A cam is fixedly installed on the hinge cup; A buffer damper is fixedly installed on the outer hinge arm, and a stop pin is connected to the piston rod end of the buffer damper. The stop pin is arranged opposite to the cam surface of the cam. The left and right sides of the external hinge arm are provided with guide grooves, which are arranged along the extension and retraction direction of the piston rod. The two ends of the abutment pin are respectively slidably arranged in the corresponding guide grooves. When the cabinet door is closed, the hinge cup rotates toward the hinge arm, causing the outer and inner hinge arms to rotate. This causes the abutment pin of the damper to abut against the cam surface, and the cam compresses the piston rod upward. The damper then prevents the outer hinge arm from rotating.

2. A hydraulic cushion hinge according to claim 1, wherein: The outer hinge arm is provided with a mounting cavity for installing a buffer damper, and a clip for fixing the buffer damper is provided at the opening of the mounting cavity.

3. A hydraulic cushion hinge according to claim 2, wherein: The jacket includes a jacket body and fixing plates disposed on both sides of the jacket body. The fixing plates are fixed to the outer hinge arm by welding.

4. A hydraulic cushion hinge according to claim 1 or 2 or 3, characterized in that: The cam is provided with a mounting hole and a mounting groove. One end of the U-shaped needle passes through the mounting hole and the other end is placed in the mounting groove to fix the cam to the hinge cup.

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