CN215718019U

CN215718019U - Constant force hinge

Info

Publication number: CN215718019U
Application number: CN202121293899.2U
Authority: CN
Inventors: 张超凡
Original assignee: Zhengzhou Kunke Electronic Technology Co ltd
Current assignee: Zhengzhou Kunke Electronic Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-02-01
Anticipated expiration: 2031-06-09

Abstract

The utility model relates to a constant force hinge. The constant force hinge comprises a mounting seat, wherein a first telescopic cylinder and a second telescopic cylinder which are arranged oppositely are hinged in the mounting seat, a first hinge which is formed by hinging and connecting a plurality of hinge connecting pieces is hinged at the end part of a piston rod of the first telescopic cylinder, a second hinge which is formed by hinging and connecting a plurality of hinge connecting pieces is hinged at the end part of a piston rod of the second telescopic cylinder, the first hinge and the second hinge are arranged oppositely, a connecting shaft which is positioned on the upper side of the first telescopic cylinder and the second telescopic cylinder is arranged on the mounting seat, a third hinge and a fourth hinge which are formed by hinging and connecting a plurality of hinge connecting pieces are sleeved at the two ends of the connecting shaft respectively, the third hinge and the fourth hinge are positioned on the first hinge and the two sides of the second hinge, the upper ends of the first hinge and the second hinge are hinged with a fixing seat through a first pivot, and the upper ends of the third hinge and the fourth hinge are hinged with the fixing seat through a second pivot. Compared with the prior art, the constant force hinge is convenient to operate, and time and labor are saved.

Description

Constant force hinge

Technical Field

The utility model relates to a constant force hinge.

Background

The constant force hinge that the hanging lamps and lanterns adopted in traditional studio realized the constant force mainly through adjusting two constant force springs, along with the diversification of TV program kind, different cloth light method need be carried out to different programs, consequently need a safe, reliable and adjust convenient constant force hinge.

Chinese CN200820117705.1 patent discloses an electric constant force hinge, which comprises a hinge frame, the hinge frame comprises a hinge connecting sheet, a hinge connecting shaft, an upper connector and a lower connector, the electric constant force hinge also comprises a base, a transmission mechanism is arranged in the base for driving the hinge frame to extend and descend, the transmission mechanism comprises a motor and a pulley block, the pulley block is composed of a fixed pulley, a movable pulley and a transmission steel wire; the motor is arranged in the base, and an output shaft of the motor is pivoted with a fixed pulley of the pulley block; the upper connector of the hinge frame is fixed at the lower part of the base; the movable pulley is arranged on the hinge connecting shaft, and the motor is controlled by the control box. The electric constant force hinge can generate certain displacement upwards or downwards due to inertia when the suspended lamp is adjusted to different heights, and is difficult to accurately position.

Chinese patent No. CN200420120024.2 discloses a high-precision ratchet-pawl constant-force hinge, which is composed of a hinge frame and a constant-force self-locking device. The hinge frame comprises a hinge connecting sheet, a hinge connecting shaft, an upper connector and a lower connector. The hinge connecting shaft is used for hinging the aluminum hinge connecting sheet in a crossed manner. The constant force self-locking device is characterized in that a spring is arranged in a spring seat of a rope winding wheel, the steel wire rope is clamped on the rope winding wheel, a cover plate is fixed by the steel wire rope to form the rope winding wheel, a bakelite gasket, a copper shaft sleeve, a self-locking pulley, a positioning gasket and a spring gasket are sleeved on the rope winding wheel, the bakelite gasket is sleeved on the cover plate, a constant force adjusting screw is screwed on the cover plate, the cover plate is fixed by a spring fixing surface cover, and then the spring winding wheel is arranged at the lower end of a hinge frame and is sleeved in a steel wire rope fixing shaft at the upper end of the hinge frame by penetrating the steel wire rope guide frame. And finally, the spring bolt and a spring bolt pressure spring are penetrated together by a spring bolt fixing shaft and are arranged below the side of the constant-force self-locking device, so that the spring bolt is buckled with the gear-shaped pulley to form self-locking. The weighing capacity of the constant force hinge is generally 2-15kg, and the constant force hinge is not suitable for hanging lamps with larger weight.

At present, the bearing capacity of a constant force hinge used in the market is generally 2-15kg, and the constant force hinge is not suitable for installation of a heavier lamp; when the hinge frame is pulled to adjust the up-down position of the installed lamp, the constant force hinge moves upwards or downwards for a certain displacement due to inertia under the action of the elasticity of the clockwork spring and the gravity of the lamp, and cannot be accurately positioned; when the lamps with different weights are replaced by the constant-force hinge, the relative position of the clockwork spring hook and the hinge frame needs to be adjusted again, so that the length of the clockwork spring is adjusted to balance the elastic force with the gravity of the lamps, and the constant-force hinge is complex in operation, time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model provides the constant force hinge which is simple to operate, time-saving and labor-saving and is suitable for lamps with different weights.

The technical scheme of the constant force hinge is as follows:

the constant force hinge comprises a mounting seat, a first telescopic cylinder and a second telescopic cylinder which are oppositely arranged are hinged in the mounting seat, the end part of the piston rod of the first telescopic cylinder is hinged with a first hinge which is formed by hinging and connecting a plurality of hinge connecting sheets, the end part of the piston rod of the second telescopic cylinder is hinged with a second hinge which is formed by hinging and connecting a plurality of hinge connecting sheets, the first hinge and the second hinge are oppositely arranged, the mounting seat is provided with a connecting shaft positioned at the upper sides of the first telescopic cylinder and the second telescopic cylinder, a third hinge and a fourth hinge which are hinged and connected by a plurality of hinge connecting sheets are respectively sleeved at the two ends of the connecting shaft, the third hinge and the fourth hinge are positioned on two sides of the first hinge and the second hinge, the upper ends of the first hinge and the second hinge are hinged with the fixed seat through a first pivot, and the upper ends of the third hinge and the fourth hinge are hinged with the fixed seat through a second pivot.

As a further improvement to the above technical solution, the mounting seat is fixedly connected with two fixing blocks located at upper sides of the first telescopic cylinder and the second telescopic cylinder, one end of the connecting shaft is fixedly connected with the mounting seat, and the other end of the connecting shaft is fixedly connected with the fixing blocks.

As a further improvement to the above technical scheme, the mount pad is of a U-shaped structure, one end of the connecting shaft is fixedly connected with the vertical side inner side surface of the mount pad, two ends of the fixing block are respectively fixedly connected with the vertical side inner side surface of the mount pad through L-shaped plates, the vertical part outer side surface of each L-shaped plate is fixedly connected with the end part of the fixing block, and the horizontal part outer side surface of each L-shaped plate is fixedly connected with the vertical side inner side surface of the mount pad.

As a further improvement to the above technical solution, the first hinge is hinged to the fixed block, and the second hinge is hinged to the fixed block.

As a further improvement to the above technical solution, a rectangular block is disposed between the third hinge and the fourth hinge, and four side surfaces of the rectangular block are respectively hinged to the first hinge, the second hinge, the third hinge, and the fourth hinge through a third pivot.

The utility model provides a constant force hinge, which has the following advantages compared with the prior art:

when the constant-force hinge is used, the piston rod of the first telescopic cylinder and the piston rod of the second telescopic cylinder extend out, the first telescopic cylinder drives the first hinge to extend out, the second telescopic cylinder drives the second hinge to extend out, the first hinge and the second hinge drive the third hinge and the fourth hinge to extend out through the fixed block and the third pivot, synchronous extension of the first hinge, the second hinge, the third hinge and the fourth hinge is achieved, and a lamp fixedly connected to the fixed seat is driven to extend out. The piston rod of the first telescopic cylinder and the piston rod of the second telescopic cylinder contract, the first telescopic cylinder drives the first hinge to contract, the second telescopic cylinder drives the second hinge to contract, the first hinge and the second hinge drive the third hinge and the fourth hinge to contract through the fixing block and the third pivot, synchronous contraction of the first hinge, the second hinge, the third hinge and the fourth hinge is achieved, and the lamp fixedly connected to the fixing base is driven to contract. Compared with the prior art, the constant force hinge drives the first hinge, the second hinge, the third hinge and the fourth hinge to synchronously extend and retract through the first telescopic cylinder and the second telescopic cylinder, so that the constant force hinge can be used for fixing and installing objects with larger weight.

Drawings

FIG. 1 is a first schematic structural view of a constant force hinge of the present invention;

FIG. 2 is a second schematic structural view of the constant force hinge of the present invention;

reference numbers in the figures: 1. a first telescoping cylinder; 2. a second telescoping cylinder; 3. a first hinge; 4. a second hinge; 5. a third hinge; 6. a fourth hinge; 7. an L-shaped plate; 8. a fixed block; 9. a connecting shaft; 10. a rectangular block; 11. a third pivot; 12. a fixed seat; 13. a first pivot; 14. a second pivot; 15. and (7) mounting a seat.

Detailed Description

The utility model is described in further detail below with reference to the following figures and detailed description:

the specific embodiment of the constant force hinge of the utility model, as shown in fig. 1 and fig. 2, comprises a mounting seat 15, a first telescopic cylinder 1 and a second telescopic cylinder 2 which are oppositely arranged are hinged in the mounting seat 15, a first hinge 3 which is formed by hinging and connecting a plurality of hinge connecting sheets is hinged at the end part of a piston rod of the first telescopic cylinder 1, a second hinge 4 which is formed by hinging and connecting a plurality of hinge connecting sheets is hinged at the end part of a piston rod of the second telescopic cylinder 2, the first hinge 3 and the second hinge 4 are oppositely arranged, a connecting shaft 9 which is positioned at the upper side of the first telescopic cylinder 1 and the second telescopic cylinder 2 is arranged on the mounting seat 15, a third hinge 5 and a fourth hinge 6 which are hinged and connected by a plurality of hinge connecting sheets are respectively sleeved at the two ends of the connecting shaft 9, the third hinge 5 and the fourth hinge 6 are positioned at the two sides of the first hinge 3 and the second hinge 4, the upper ends of the first hinge 3 and the second hinge 4 are hinged to a fixed seat 12 through a first pivot 13, and the upper ends of the third hinge 5 and the fourth hinge 6 are hinged to the fixed seat 12 through a second pivot 14.

In this embodiment, the fixed block 8 that is located on the upper sides of the first telescopic cylinder 1 and the second telescopic cylinder 2 is fixedly connected to the mounting seat 15, the number of the connecting shafts 9 is two, one end of each connecting shaft 9 is fixedly connected to the mounting seat 15, and the other end of each connecting shaft is fixedly connected to the fixed block 8. The mounting seat 15 is the U-shaped structure, the one end of connecting axle 9 with the vertical limit medial surface fixed connection of mounting seat 15, the both ends of fixed block 8 respectively through L shaped plate 7 with the vertical limit medial surface fixed connection of mounting seat 15, the vertical portion lateral surface of L shaped plate 7 with 8 tip fixed connection of fixed block, the horizontal part lateral surface of L shaped plate 7 with the vertical limit medial surface fixed connection of mounting seat 15. The first hinge 3 is hinged to the fixed block 8, and the second hinge 4 is hinged to the fixed block 8.

In this embodiment, a rectangular block 10 is disposed between the third hinge 5 and the fourth hinge 6, and four side surfaces of the rectangular block 10 are respectively hinged to the first hinge 3, the second hinge 4, the third hinge 5, and the fourth hinge 6 through a third pivot 11.

when the constant force hinge is used, a piston rod of the first telescopic cylinder 1 and a piston rod of the second telescopic cylinder 2 extend out, the first telescopic cylinder 1 drives the first hinge 3 to extend out, the second telescopic cylinder 2 drives the second hinge 4 to extend out, the first hinge 3 and the second hinge 4 drive the third hinge 5 and the fourth hinge 6 to extend out through the fixed block 8 and the third pivot 11, synchronous extension of the first hinge 3, the second hinge 4, the third hinge 5 and the fourth hinge 6 is realized, and a lamp fixedly connected to the fixed seat 12 is driven to extend out. The piston rod of the first telescopic cylinder 1 and the piston rod of the second telescopic cylinder 2 contract, the first telescopic cylinder 1 drives the first hinge 3 to contract, the second telescopic cylinder 2 drives the second hinge 4 to contract, the first hinge 3 and the second hinge 4 drive the third hinge 5 and the fourth hinge 6 to contract through the fixing block 8 and the third pivot 11, synchronous contraction of the first hinge 3, the second hinge 4, the third hinge 5 and the fourth hinge 6 is realized, and a lamp fixedly connected to the fixing seat 12 is driven to contract. Compared with the prior art, the constant force hinge drives the first hinge 3, the second hinge 4, the third hinge 5 and the fourth hinge 6 to synchronously extend and retract through the first telescopic cylinder 1 and the second telescopic cylinder 2, so that the constant force hinge can be used for fixing and installing objects with larger weight.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The constant force hinge is characterized by comprising a mounting seat, a first telescopic cylinder and a second telescopic cylinder which are oppositely arranged are hinged in the mounting seat, a first hinge which is formed by hinging and connecting a plurality of hinge connecting sheets is hinged at the end part of a piston rod of the first telescopic cylinder, a second hinge which is formed by hinging and connecting a plurality of hinge connecting sheets is hinged at the end part of a piston rod of the second telescopic cylinder, the first hinge and the second hinge are oppositely arranged, a connecting shaft which is positioned at the upper sides of the first telescopic cylinder and the second telescopic cylinder is arranged on the mounting seat, a third hinge and a fourth hinge which are hinged and connected by a plurality of hinge connecting sheets are respectively sleeved at the two ends of the connecting shaft, the third hinge and the fourth hinge are positioned at the two sides of the first hinge and the second hinge, the upper ends of the first hinge and the second hinge are hinged with a fixing seat through a first pivot, the upper ends of the third hinge and the fourth hinge are hinged with the fixed seat through a second pivot.

2. The constant force hinge as claimed in claim 1, wherein the mounting base is fixedly connected with two fixing blocks located at the upper sides of the first telescopic cylinder and the second telescopic cylinder, one end of the connecting shaft is fixedly connected with the mounting base, and the other end of the connecting shaft is fixedly connected with the fixing blocks.

3. The constant force hinge of claim 2, wherein the mounting seat is of a U-shaped structure, one end of the connecting shaft is fixedly connected with the inner side surface of the vertical side of the mounting seat, two ends of the fixing block are respectively fixedly connected with the inner side surface of the vertical side of the mounting seat through L-shaped plates, the outer side surface of the vertical part of each L-shaped plate is fixedly connected with the end part of the fixing block, and the outer side surface of the horizontal part of each L-shaped plate is fixedly connected with the inner side surface of the vertical side of the mounting seat.

4. The constant force hinge according to claim 2, wherein the first hinge is hinged to the fixed block and the second hinge is hinged to the fixed block.

5. The constant force hinge according to claim 1, wherein a rectangular block is disposed between the third hinge and the fourth hinge, and four side surfaces of the rectangular block are respectively hinged to the first hinge, the second hinge, the third hinge and the fourth hinge through a third pivot.