CN216921759U

CN216921759U - Door hinge structure

Info

Publication number: CN216921759U
Application number: CN202120894727.4U
Authority: CN
Inventors: 吴国杨
Original assignee: Guangdong Aosite Hardware Precision Manufacturing Co ltd
Current assignee: Guangdong Aosite Hardware Precision Manufacturing Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-07-08
Anticipated expiration: 2031-04-28

Abstract

The utility model provides a door hinge structure, set gradually between the head that rotates on the fixed arm on the cabinet body and the door plant and have the pressure cylinder of piston rod, push-and-pull spare and connecting piece, fixed through two rivets between piston rod and the push-and-pull spare, and then articulated through the atress pole between push-and-pull spare and the connecting piece, the cover has the roll cover on the atress pole, the tip of the torsional spring of installing on the fixed arm offsets with the roll cover and its application force of exerting directional rotation head one side. This door hinge structure is except the removal of piston rod in the motion process, the switching of door plant is mainly realized through rotating to all the other spare parts, the setting needs of U-shaped spout in the current hinge of having cancelled, thereby the machining precision requirement of hinge has been improved, the accuracy of hinge switching operation has also been improved, and prevent effectively that the door plant from producing to beat and influencing the effect of closing the door, also can not damage spare part because of wearing and tearing simultaneously, the job stabilization nature and the life of hinge have been improved effectively, manufacturing and use cost are reduced.

Description

Door hinge structure

Technical Field

The present invention relates to a hinge device, and more particularly, to a door hinge structure.

Background

The door hinge is a device which is arranged between the cabinet body and the door panel and is used for opening and closing the door panel, the stability of closing the door panel and the smoothness of opening and closing can be improved by using the door hinge, and silent movement is realized. The existing door hinge structure is shown in fig. 1, and comprises a fixed arm 101 mounted on a cabinet body and a rotating head 102 mounted on a door panel, wherein one end of the fixed arm, which faces away from the rotating head, is provided with a pressure cylinder 104 with a piston rod 103, one end of the fixed arm, which is adjacent to the rotating head, is hinged with a connecting piece 105, the fixed arm, which is located at one side of the connecting piece, which faces away from the rotating head, is also hinged with a push-pull piece 106, the push-pull piece is triangular, one end of the push-pull piece is hinged with the fixed arm, one end of the push-pull piece is hinged with the piston rod, one end of the push-pull piece is provided with a U-shaped chute 107, the middle part of the connecting piece is hinged with the fixed arm, one end of the connecting piece is connected with the rotating head, and one end of the connecting piece is provided with a poke rod 108 which moves along the U-shaped chute.

When the door plate rotates, the poke rod can move along the U-shaped sliding groove on the push-pull piece, so that the push-pull piece rotates to drive the piston rod to move, and the effects of buffering and noise reduction are achieved. The door hinge has high requirements on the precision and the finish degree of the U-shaped sliding groove, if the size of the U-shaped sliding groove is smaller, the closing of the hinge can be influenced, if the size of the U-shaped sliding groove is larger, the virtual position of the hinge is overlarge when the hinge is closed, and if the finish degree of the hole wall of the U-shaped sliding groove is insufficient, the hinge can jump when the hinge is closed, so that the opening and closing effect of the door panel is influenced, and even the door panel can not be closed in serious cases; in addition, in the long-term use of the door hinge, the U-shaped sliding groove is easily abraded, so that the smoothness and the buffering effect of opening and closing of the door panel are affected, for this reason, lubricating oil must be added at the U-shaped sliding groove to reduce abrasion, but the abrasion cannot be avoided, and extra use cost is also increased.

Disclosure of Invention

The utility model aims to provide a more stable and durable door hinge structure, so as to improve the working stability and the service life of a door hinge and reduce the use cost.

The door hinge structure comprises a fixed arm, a rotating head, a pressure cylinder arranged on the fixed arm, and a connecting piece with the middle part hinged on the fixed arm, wherein a push-pull piece is fixedly arranged on a piston rod of the pressure cylinder, and two ends of the connecting piece are respectively hinged with the rotating head and the push-pull piece.

In the door hinge structure, one end of the connecting piece is hinged with the rotating head, the other end of the connecting piece is hinged with the push-pull piece through the stress rod, the fixed arm is provided with the torsion spring, and the end part of the torsion spring interacts with the stress rod; or the stress rod is sleeved with a rolling sleeve which can rotate relatively, and the end part of the torsion spring is propped against the outer wall of the rolling sleeve and applies acting force pointing to one side of the rotating head to the rolling sleeve.

According to the door hinge structure, a cylinder body of a pressure cylinder is hinged inside a fixed arm, a piston rod of the pressure cylinder is fixedly connected with a push-pull piece, the push-pull rod is hinged with a connecting piece through a stress rod, a rolling sleeve is arranged on the stress rod, and the other end of the connecting piece is hinged with a rotating head; when the rotating head is stressed to be closed and moves, the stress of the rotating head can drive the connecting piece to rotate around a middle hinge point of the connecting piece hinged on the fixed arm, the rolling sleeve can receive the acting force of the torsion spring to automatically drive the rotating head to be continuously closed, and the pressure cylinder can slowly close the rotating head through the pulling force of the piston rod in the process, so that the door plate is driven to be automatically and slowly closed, the door plate is prevented from colliding with the cabinet body, and the mute closing is realized. This door hinge structure is except the removal of piston rod in the motion process, the switching of door plant is mainly realized through rotating to all the other spare parts, the setting needs of U-shaped spout in the current hinge of having cancelled, thereby the machining precision requirement of hinge has been improved, the accuracy of hinge switching operation has also been improved, and prevent effectively that the door plant from producing to beat and influencing the effect of closing the door, also can not damage spare part because of wearing and tearing simultaneously, the job stabilization nature and the life of hinge have been improved effectively, manufacturing and use cost are reduced.

Drawings

Fig. 1 is a schematic structural view of a conventional door hinge.

FIG. 2 is a schematic view illustrating a structure of the door hinge structure according to the present invention.

Fig. 3 is a schematic view showing a connection structure of the pressure cylinder, the push-pull member and the connecting member.

Fig. 4 is a schematic view of the construction of a pressure cylinder and its upper piston rod.

Fig. 5 is a schematic structural view of the push-pull member.

Detailed Description

A door hinge structure comprises a fixed arm 1, a rotating head 2, a pressure cylinder 3 arranged on the fixed arm, and a connecting piece 4 with the middle part hinged on the fixed arm, wherein a push-pull piece 6 is fixedly arranged on a piston rod 5 of the pressure cylinder, and two ends of the connecting piece are respectively hinged with the rotating head and the push-pull piece.

In the door hinge structure, one end of a connecting piece 4 is hinged with a rotating head 2, the other end of the connecting piece is hinged with a push-pull piece 6 through a stress rod 7, a torsion spring 9 is arranged on a fixed arm 1, and the end part of the torsion spring interacts with the stress rod; or, the stress rod is sleeved with a rolling sleeve 8 which can rotate relatively, and the end part of the torsion spring is propped against the outer wall of the rolling sleeve and applies acting force pointing to one side of the rotating head to the rolling sleeve.

As shown in fig. 2-5, the cylinder body of the pressure cylinder is hinged inside the fixed arm, the piston rod of the pressure cylinder is fixedly connected with a push-pull member, the push-pull rod is hinged with the connecting member through a stress rod, the stress rod is provided with a rolling sleeve, and the other end of the connecting member is hinged with the rotating head; when the rotating head is stressed to close and moves, the stress of the rotating head can drive the connecting piece to rotate around a hinge point at the middle part of the connecting piece hinged on the fixed arm, the rolling sleeve can automatically drive the rotating head to be continuously closed under the action of the torsional spring, and the pressure cylinder can slowly close the rotating head through the tension of the piston rod in the process, so that the door plate is driven to be automatically and slowly closed, the door plate is prevented from colliding with the cabinet body, and the silent closing is realized. This door hinge structure is except the removal of piston rod in the motion process, the switching of door plant is mainly realized through rotating to all the other spare parts, the setting needs of U-shaped spout in the current hinge of having cancelled, thereby the machining precision requirement of hinge has been improved, the accuracy of hinge switching operation has also been improved, and prevent effectively that the door plant from producing to beat and influencing the effect of closing the door, also can not damage spare part because of wearing and tearing simultaneously, the job stabilization nature and the life of hinge have been improved effectively, manufacturing and use cost are reduced.

In the door hinge structure, two push-pull plates 61 respectively arranged at two sides of a piston rod 5 are arranged on a push-pull rod 6, two or more through holes 10 are oppositely arranged on the push-pull plates and the piston rod, all the through holes are axially arranged at intervals along the piston rod and are axially vertical to the axial direction of the piston rod, and rivets 11 penetrate through the through holes which are oppositely arranged and are connected with the push-pull plates and the piston rod. The push-pull rod and the piston rod are riveted together through the rivet and are relatively fixed, acting force is applied to the piston rod through the push-pull rod in the opening and closing process of the door panel, the piston rod applies counter acting force to the push-pull rod, and the door panel is slowly closed through the counter acting force. The connecting structure of the push-pull rod and the piston rod is simple and stable, and is beneficial to improving the working stability and the durability of the door hinge.

Claims

1. The utility model provides a door hinge structure, includes fixed arm (1), rotates head (2) to and install pressure cylinder (3) and the middle part on the fixed arm and articulate connecting piece (4) on the fixed arm, its characterized in that: a push-pull piece (6) is fixedly arranged on a piston rod (5) of the pressure cylinder, and two ends of the connecting piece are respectively hinged with the rotating head and the push-pull piece.

2. The door hinge structure according to claim 1, wherein: one end of the connecting piece (4) is hinged with the rotating head (2), the other end of the connecting piece is hinged with the push-pull piece (6) through the stress rod (7), the fixed arm (1) is provided with a torsion spring (9), and the end part of the torsion spring interacts with the stress rod.

3. The door hinge structure according to claim 2, wherein: the stress rod (7) is sleeved with a rolling sleeve (8) which can rotate relatively, and the end part of the torsion spring (9) is propped against the outer wall of the rolling sleeve and applies an acting force pointing to one side of the rotating head to the rolling sleeve.

4. A door hinge structure according to claim 1, 2 or 3, wherein: the push-pull piece (6) is provided with two push-pull plates (61) which are respectively arranged on two sides of the piston rod (5), the push-pull plates and the piston rod are oppositely provided with two or more through holes (10), all the through holes are arranged at intervals along the axial direction of the piston rod, the axial direction of the through holes is mutually vertical to the axial direction of the piston rod, and the rivet (11) penetrates through the through holes which are oppositely arranged and is connected with the push-pull plates and the piston rod.