Self-locking rebound hinge

Abstract

The utility model discloses a self-locking rebound hinge which comprises a hinge body and a hinge cup. The hinge main body comprises a base and a hinge arm; an upper connecting arm is hinged to the upper portion of one end, facing the hinge cup, of the hinge arm, a lower connecting arm is hinged to the lower portion of the end, facing the hinge cup, of the hinge arm, and the front end of the upper connecting arm and the front end of the lower connecting arm are both hinged to the hinge cup. A rebounding torsion spring is arranged between the upper connecting arm and the lower connecting arm, the front end part of the rebounding torsion spring is sleeved on a hinge shaft of the hinge arm and the upper connecting arm, and the rear end part of the rebounding torsion spring is propped against a propping shaft at the rear end part of the lower connecting arm; when the cabinet door is in a closed state, the rebound torsion spring and the lower connecting arm are in a vertical state, and the rebound torsion spring has forward downward pressing force on the lower connecting arm, so that the hinge cup is locked in a closed state; the cabinet door is stably in a closed state, and shaking is avoided; when the cabinet door is pulled, the hinge cup drives the lower connecting arm to rotate, and the lower connecting arm enables the cabinet door to be rebounded and opened under the action of the rebounding torsion spring; and a hinge rebounding function is realized.

Description

Technical Field

[0001] The utility model relates to the field of hinges, and more specifically, to a self-locking rebound hinge. Background Art

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solid bodies and allow relative rotation between them; hinges are mainly installed on doors and windows, while hinges are more often installed on cabinets; in order to allow people to enjoy better, hydraulic hinges (also known as damping hinges) have appeared. Their characteristic is that they provide a buffering function when the cabinet door is closed, which minimizes the noise caused by the collision between the cabinet door and the cabinet body when it is closed.

[0003] In order to facilitate the opening of cabinet doors, people invented rebound hinges, that is, people gently pull the cabinet door or a rebounder inside the cabinet body pushes the cabinet door back, and the cabinet door can open automatically under the action of the rebound hinge; however, when the cabinet door is in a closed state, the existing rebound hinge cannot lock the cabinet door in a closed state, which makes the cabinet door easy to shake, and even the cabinet door is opened automatically by the rebound hinge. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a self-locking rebound hinge.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-locking rebound hinge comprises a hinge body mounted on a cabinet side panel and a hinge cup mounted on a cabinet door; the hinge body comprises a base mounted on the cabinet side panel and a hinge arm arranged on the base; an upper connecting arm is hingedly connected to the upper end of the hinge arm facing the hinge cup, and a lower connecting arm is hingedly connected to the lower end of the hinge arm, and the front ends of the upper connecting arm and the lower connecting arm are both hingedly connected to the hinge cup;

[0007] A rebound torsion spring is arranged between the upper connecting arm and the lower connecting arm, the front end of the rebound torsion spring is sleeved on the hinge shaft of the hinge arm and the upper connecting arm, and the rear end of the rebound torsion spring abuts against the abutting shaft at the rear end of the lower connecting arm;

[0008] The hinge cup drives the lower connecting arm to rotate, so that the rebound torsion spring and the lower connecting arm are in a vertical state, and the rebound torsion spring locks the hinge cup in a closed state.

[0009] The utility model is further configured that: a roller is sleeved on the abutting shaft, and the rear end of the rebound torsion spring abuts against the outer side wall of the roller.

[0010] The utility model is further configured as follows: a buffer arm is hinged at the rear end of the lower connecting arm, a buffer arm is provided on the buffer arm, a front end of the buffer is connected to the buffer arm, and a rear end of the buffer is connected to the hinge arm.

[0011] The utility model is further configured as follows: the buffer comprises a damping shell and a piston rod with a piston, the damping shell is connected to the hinge arm, one end of the piston rod is placed in the damping shell, and the other end is connected to the rear connecting arm.

[0012] The beneficial effects of the utility model are as follows: the rebound hinge of the utility model is provided with a rebound torsion spring between the upper connecting arm and the lower connecting arm used to connect the hinge cup and the hinge arm, the front end of the rebound torsion spring is provided on the rear end of the upper connecting arm, and the rear end of the rebound torsion spring abuts against the abutting shaft at the rear end of the lower connecting arm; when the cabinet door is closed, the hinge cup is driven to rotate, and the hinge cup drives the lower connecting arm to rotate, and when the cabinet door is in a closed state, the rebound torsion spring will be in a vertical state with the lower connecting arm, and the rebound torsion spring has a positive downward pressing force on the lower connecting arm, locking the hinge cup in a closed state; so that the cabinet door is stably in a closed state to avoid shaking;

[0013] When people pull the cabinet door outwards or the rebounder in the cabinet pushes the cabinet door outwards, the hinge cup drives the lower connecting arm to rotate, so that the angle between the lower connecting arm and the rebound torsion spring is reduced. As a result, the lower connecting arm, under the rebound force of the rebound torsion spring, drives the hinge cup to rotate, causing the cabinet door to rebound outwards and open; the rebound function of the hinge is realized, causing the cabinet door to open by itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a self-locking rebound hinge of the utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of a self-locking rebound hinge of the utility model. Figure 2 ;

[0016] Figure 3 This is a structural schematic diagram of a self-locking rebound hinge of the utility model without a base;

[0017] Figure 4 This is a schematic diagram of the internal connection structure of a self-locking rebound hinge of the utility model;

[0018] Figure 5 This is a state diagram of a hinge arm in an unfolded state of a self-locking rebound hinge of the utility model;

[0019] Figure 6 It is a schematic diagram of the internal structure of a hinge arm of a self-locking rebound hinge in an unfolded state according to the utility model;

[0020] Figure 7 This is a diagram showing the coordination of a rebound torsion spring and a lower connecting arm in an unfolded state of a self-locking rebound hinge of the utility model;

[0021] Figure 8 It is a schematic diagram of the internal structure of a hinge arm in a closed state of a self-locking rebound hinge of the utility model;

[0022] Fig. 9 This is a diagram showing the coordination of a rebound torsion spring and a lower connecting arm in a closed state of a self-locking rebound hinge of the utility model;

[0023] Fig.10 This is a diagram showing the coordination of a rebound torsion spring and a roller of a self-locking rebound hinge of the utility model;

[0024] Explanation of the accompanying drawings: 1. Hinge body; 11. Base; 12. Hinge arm; 13. Upper connecting arm; 14. Lower connecting arm; 141. Abutment shaft; 1411. Roller; 15. Buffer arm; 16. Buffer; 161. Damping shell; 162. Piston rod; 17. Rebound torsion spring; 2. Hinge cup. DETAILED DESCRIPTION

[0025] See attached Figures 1 to 10 The self-locking rebound hinge of the utility model is further described in detail.

[0026] A self-locking rebound hinge comprises a hinge body 1 mounted on a cabinet side panel and a hinge cup 2 mounted on a cabinet door; the hinge body 1 comprises a base 11 mounted on the cabinet side panel and a hinge arm 12 arranged on the base 11; an upper connecting arm 13 is hingedly connected to the upper end of the hinge arm 12 facing the hinge cup 2, and a lower connecting arm 14 is hingedly connected to the lower end of the hinge arm 12, and the front ends of the upper connecting arm 13 and the lower connecting arm 14 are both hingedly connected to the hinge cup 2;

[0027] A rebound torsion spring 17 is provided between the upper connecting arm 13 and the lower connecting arm 14. The front end of the rebound torsion spring 17 is sleeved on the hinge shaft of the hinge arm 12 and the upper connecting arm 13, and the rear end of the rebound torsion spring 17 abuts against the abutting shaft 141 at the rear end of the lower connecting arm 14.

[0028] When the cabinet door is closed, the hinge cup 2 is driven to rotate, and the hinge cup 2 drives the lower connecting arm 14 to rotate. When the cabinet door is in a closed state, the rebound torsion spring 17 is in a vertical state with the lower connecting arm 14. The rebound torsion spring 17 has a positive downward pressing force on the lower connecting arm 14, locking the hinge cup 2 in a closed state; so that the cabinet door is stably in a closed state to avoid shaking;

[0029] When people pull the cabinet door outwards or the rebounder in the cabinet pushes the cabinet door outwards, the hinge cup 2 drives the lower connecting arm 14 to rotate, so that the angle between the lower connecting arm 14 and the rebound torsion spring 17 is reduced, so that the lower connecting arm 14, under the rebound force of the rebound torsion spring 17, drives the hinge cup 2 to rotate, causing the cabinet door to rebound outwards and open; the rebound function of the hinge is realized, causing the cabinet door to open automatically.

[0030] In order to reduce the friction between the rebound torsion spring 17 and the abutment shaft 141, a roller 1411 is sleeved on the abutment shaft 141, and the rear end of the rebound torsion spring 17 abuts against the outer wall of the roller 1411; when closing or opening the cabinet door, the rear end of the rebound torsion spring 17 drives the roller 1411 to roll on the abutment shaft 141 to avoid direct contact between the rebound torsion spring 17 and the abutment shaft 141, thereby avoiding wear; at the same time, the friction between the two is reduced, making the cabinet door opening or closing operation more labor-saving and convenient.

[0031] The rear end of the lower connecting arm 14 is hinged with a buffer arm 15, and a buffer 16 is arranged on the buffer arm 15. The front end of the buffer 16 is connected to the buffer arm 15, and the rear end is connected to the hinge arm 12. When the cabinet door is closed, the hinge cup 2 drives the upper connecting arm 13 and the lower connecting arm 14. The buffer arm 15 will slowly prevent the lower connecting arm 14 from rotating under the prevention of the buffer 16, thereby slowing down the closing speed of the cabinet door and playing a buffering role; effectively avoiding the cabinet door from hitting the cabinet body when closing;

[0032] The buffer 16 includes a damping shell 161 and a piston rod 162 with a piston, the damping shell 161 is connected to the hinge arm 12, one end of the piston rod 162 is placed in the damping shell 161, and the other end is connected to the rear connecting arm; when the cabinet door is closed, the cabinet door plate drives the upper connecting arm 13 and the lower connecting arm 14 to rotate through the hinge cup 2, and the buffer arm 15 at the rear end of the lower connecting arm 14 will compress the piston rod 162 inward, and the piston rod 162 will slowly compress downward under the resistance of the damping oil; the piston rod 162 will react to the lower connecting arm 14 through the buffer arm 15, and prevent the cabinet door from rotating through the hinge cup 2, so as to slow down the closing speed of the cabinet door and play a buffering role.

[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A self-locking rebound hinge, comprising a hinge body mounted on a cabinet side panel and a hinge cup mounted on a cabinet door; the hinge body comprises a base mounted on the cabinet side panel and a hinge arm arranged on the base; the characteristics are: An upper connecting arm is hingedly connected above one end of the hinge arm facing the hinge cup, and a lower connecting arm is hingedly connected below the hinge arm, and the front ends of the upper connecting arm and the lower connecting arm are both hingedly connected to the hinge cup; A rebound torsion spring is arranged between the upper connecting arm and the lower connecting arm, the front end of the rebound torsion spring is sleeved on the hinge shaft of the hinge arm and the upper connecting arm, and the rear end of the rebound torsion spring abuts against the abutting shaft at the rear end of the lower connecting arm; The hinge cup drives the lower connecting arm to rotate, so that the rebound torsion spring and the lower connecting arm are in a vertical state, and the rebound torsion spring locks the hinge cup in a closed state.

2. A self-locking rebound hinge according to claim 1, characterized in that: A roller is sleeved on the abutting shaft, and the rear end of the rebound torsion spring abuts against the outer side wall of the roller.

3. A self-locking rebound hinge according to claim 1 or 2, characterized in that: The rear end of the lower connecting arm is hinged with a buffer arm, and the buffer arm is provided with a buffer, the front end of the buffer is connected to the buffer arm, and the rear end of the buffer is connected to the hinge arm.

4. The self-locking rebound hinge according to claim 3 is characterized in that: The buffer comprises a damping shell and a piston rod with a piston, wherein the damping shell is connected to the hinge arm, one end of the piston rod is placed in the damping shell, and the other end is connected to the rear connecting arm.

Images