CN108468489B

CN108468489B - Magnetic ratchet hinge structure

Info

Publication number: CN108468489B
Application number: CN201810114551.9A
Authority: CN
Inventors: 俞云祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2023-05-23
Anticipated expiration: 2038-02-01
Also published as: CN108468489A

Abstract

The invention provides a magnetic ratchet hinge structure, which comprises a first hinge and a second hinge, wherein the first hinge is connected with the second hinge through a rotating shaft, the first hinge is a relatively fixed piece for the rotating shaft, the second hinge rotates along with the rotating shaft, a pawl is arranged on the first hinge and is hinged with the first hinge, a ratchet wheel is arranged on the rotating shaft, the distribution range of the ratchet on the ratchet wheel is 1/6-1/3 of the circumference of the ratchet wheel, a shifting plate is arranged on the ratchet wheel, the length of the shifting plate is longer than the tooth length of the ratchet wheel, a permanent magnet is arranged on the first hinge, a magnetic guide plate is arranged at the tail part of the pawl, when the ratchet wheel rotates to one direction and enables the pawl to be separated from the ratchet wheel, one shifting plate shifts the pawl, the magnetic guide plate on the pawl is close to and attracted with the permanent magnet, and a slow rebound piece is arranged between the pawl and the ratchet wheel. The invention is silent, can arbitrarily fix the opening and closing positions of doors and windows under a certain angle, and can fold the hinge reversely and smoothly after the door and window are opened to the limit.

Description

Magnetic ratchet hinge structure

Technical Field

The invention relates to the field of hinges, in particular to a magnetic ratchet hinge structure.

Background

When the door and window are opened, the stability of the frame is poor due to the hinge, especially the door and window can swing automatically and even be locked automatically when being blown by strong wind.

In order to solve the above-mentioned problems, a structure of a ratchet hinge has been proposed, such as a five-gear hinge of patent number CN201020277002.2, but it is difficult to perfectly match between the cam and the ratchet of the hinge, so that the click is still serious, especially when the hinge rotates, the click has abnormal noise in each cell of the pawl, and the smooth opening and closing effect cannot be achieved.

Disclosure of Invention

The invention aims to solve the problems and provide a magnetic ratchet hinge structure with a slow recovery effect.

The aim of the invention can be achieved by the following technical scheme: the invention comprises a first hinge and a second hinge which are connected by a rotating shaft, wherein the first hinge is a relatively fixed part aiming at the rotating shaft, the second hinge rotates along with the rotating shaft, a pawl is arranged on the first hinge and hinged with the first hinge, a ratchet wheel is arranged on the rotating shaft, the distribution range of ratchets on the ratchet wheel is 1/6-1/3 of the circumference of the ratchet wheel, and the invention is characterized in that a shifting plate is respectively arranged at the two end parts of continuous ratchets on the ratchet wheel, the length of the shifting plate is longer than the tooth length of the ratchets, a distance is reserved between the shifting plate and the ratchets, a permanent magnet is arranged on the first hinge, a magnetic conduction plate is arranged at the tail part of the pawl, and when the ratchet wheel rotates towards one direction and enables the pawl to be separated from the ratchets, the magnetic conduction plate on the pawl is enabled to be close to and attracted with the permanent magnet, and a slow rebound reset part is arranged between the pawl and the ratchet wheel.

The slow rebound resetting piece comprises a magnet core arranged in the ratchet wheel, the magnet core is of a circular ring structure and is coaxial with the ratchet wheel, the claw head part of the pawl is made of magnetic metal, the hinge I is provided with two connecting seats, the pawl is clamped between the two connecting seats and hinged with the connecting seats, the connecting seats are provided with front and rear blocking pieces, and the front and rear blocking pieces limit the maximum positions of the pawl which rotate forwards and backwards respectively.

When the magnetic conduction plate is attached to the permanent magnet, the pawl is upwarp, and when the ratchet wheel rotates, the pawl is not contacted with the ratchet wheel.

The shifting plate is positioned on the outer ring cutting line of the ratchet wheel.

The length of the poking plate is unequal.

Compared with the prior art, the invention has good mute effect, can arbitrarily fix the opening and closing positions of doors and windows under a certain angle, and can fold the hinge reversely and smoothly after being opened to the limit.

Drawings

Further aspects and advantages of the invention will be apparent not only from the claims, but also from the following description of a preferred illustrative embodiment of the invention, which is explained below with reference to the drawings, in which:

FIG. 1 is a schematic illustration of the present invention;

FIG. 2 is a schematic view of the assembly of the hinge, pawl, torsion spring, bolt, permanent magnet;

FIG. 3 is a schematic view of the positions of the pawl, ratchet wheel and permanent magnet when the hinge is in a 0 degree door closing state;

FIG. 4 is a schematic view of the positions of a pawl, a ratchet wheel and a permanent magnet when the hinge is in a 100-degree door opening state;

FIG. 5 is a schematic view of the positions of the pawl, ratchet and permanent magnet when the hinge is in the closed state;

in the figure, a second hinge, a first hinge, a 3 rotary shaft, a 4 hinge connecting piece, a 5 countersunk head screw, a 6 pawl, a 7 ratchet wheel, a 8 bearing, a 9 magnet core, a 10 front baffle piece, a 11 permanent magnet, a 12 inner hexagon screw, a 13 poking plate, a 14 magnetic conduction plate and a 15 rear baffle piece.

Detailed Description

The invention is further described below with reference to the drawings and examples.

The invention is shown in fig. 1-2, comprising a first hinge 2 and a second hinge 1, wherein the second hinge 1 is connected with a hinge connecting piece 4, and the hinge connecting piece 4 is provided with a countersunk head screw 5. The hinge I2 and the hinge II 1 are connected through the rotating shaft 3, the hinge II 1 rotates along with the rotating shaft 3, the rotating shaft 3 is connected with the bearing 8, and meanwhile, the hinge I2 is also connected with the rotating shaft 3.

The hinge I2 is provided with two connecting seats, a pawl 6 is clamped between the two connecting seats, and the pawl 6 connecting seats are hinged. The ratchet wheel 7 is arranged on the rotating shaft 3, the ratchet distribution range on the ratchet wheel 7 accounts for 1/6-1/3 of the circumference of the ratchet wheel 7, the shifting plates 13 are respectively arranged at the two side end positions of continuous ratchet teeth on the ratchet wheel 7, the lengths of the shifting plates 13 are larger than the tooth length of the ratchet teeth, the lengths of the two shifting plates 13 are unequal, the shifting plates 13 are spaced from the ratchet teeth, a permanent magnet 11 is arranged on the hinge I2, the permanent magnet 11 is fixed on the hinge I2 through an inner hexagon screw 12, a magnetic conduction plate 14 is arranged at the tail of the pawl 6, and when the ratchet wheel 7 rotates to one direction and enables the pawl 6 to be separated from the ratchet teeth, one shifting plate 13 shifts the pawl 6, so that the magnetic conduction plate 14 on the pawl 6 is close to and attracted with the permanent magnet 11. When the magnetic conduction plate 14 is attached to the permanent magnet 11 and attracted, the pawl 6 is upwarp, and when the ratchet wheel 7 rotates, the pawl 6 is not contacted with the ratchet. The shifting plate 13 is positioned on the outer ring tangent line of the ratchet wheel 7.

A slow rebound resetting piece is arranged between the ratchet wheel 7 and the pawl 6, and comprises a magnet core 9 arranged in the ratchet wheel 7, wherein the magnet core 9 is of a circular ring structure and is coaxial with the ratchet wheel 7, the claw head part of the pawl 6 is made of magnetic conductive metal, a front blocking piece 10 and a rear blocking piece 15 are arranged on a connecting seat, and the front blocking piece 10 and the rear blocking piece 15 respectively limit the maximum positions of the front and rear rotation of the pawl 6. When the ratchet teeth of the ratchet wheel 7 are pushed away from the pawl 6, the magnetic attraction force between the magnet core 9 and the pawl 6 is attenuated, and the backstop 15 is used for limiting the magnetic force range of the pawl 6 from being separated from the magnet core 9. When the hinge is rotated rapidly, the pawl 6 is not adsorbed to the ratchet teeth immediately, so that the pawl 6 is not meshed with each ratchet tooth in the rotating process, and excessive noise is not generated. During rotational positioning, the pawl 6 has three processes, namely, the pawl 6 is far away from the ratchet wheel 7, the pawl 6 is stopped at one position, the pawl is slowly close to the ratchet wheel 7 in the hinge vibration process, and the pawl 6 is quickly attracted to the ratchet wheel when reaching a magnetic force high point, and meanwhile, the pawl 6 is leaning against the front baffle 10.

As shown in fig. 3-5, when the hinge is unfolded, the unidirectional movement of the ratchet wheel 7 mechanism is utilized to realize the random angle fixation of the hinge. When the unfolding angle of the hinge reaches more than 90 degrees, the pawl 6 runs through the last tooth and is jacked up by the poking plate 13 at the bottom of the ratchet 7. When the angle reaches 100 degrees, the magnetic conduction plate 14 at the tail of the pawl 6 is attracted by the permanent magnet 11, the force of the torsion spring interacts with the attraction force of the permanent magnet 11, and the position of the pawl 6 is kept unchanged. At this time, the ratchet wheel 7 can rotate anticlockwise, the hinge can also fold together, and when the ratchet wheel 7 rotates anticlockwise, the pulling plate 13 of the ratchet wheel 7 gives a force to the pawl 6, so that the magnetic conduction plate 14 at the rear part of the pawl 6 breaks away from the attraction of the permanent magnet 11, and the pawl 6 is meshed with the ratchet teeth of the ratchet wheel 7 again through the magnetic force of the magnetic iron core 9.

It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a magnetism is inhaled ratchet hinge structure, includes hinge one and hinge two, is connected by the pivot between hinge one and the hinge two, hinge two be for the relative fixed part to the pivot, hinge one rotate along with the pivot, hinge one on be equipped with the pawl, pawl and hinge one are articulated, be equipped with the ratchet in the pivot, the ratchet on the ratchet distributes the range and accounts for 1/6 ~ 1/3 of ratchet circumference, its characterized in that, the both sides termination department of continuous ratchet on the ratchet respectively is equipped with the shifting plate, the length of this shifting plate is greater than the tooth length of ratchet, shifting plate to ratchet department have the interval, hinge one on be equipped with the permanent magnet, the pawl afterbody is equipped with the magnetic guide plate, when the ratchet rotates to one of them direction and makes the pawl break away from the ratchet, wherein the shifting plate stir the pawl, make the magnetic guide plate on the pawl press close to and the actuation with the permanent magnet, be equipped with slow rebound reset piece between pawl and ratchet, slow rebound reset piece including establish at the inside magnet core of ratchet, this magnet core is the ring structure and coaxial with the ratchet, the pawl head part be the metal, one on be equipped with two and connect two front and back seat, the seat are equipped with the front and back seat are connected respectively.

2. The magnetic ratchet hinge structure according to claim 1, wherein the pawl is not in contact with the ratchet teeth when the pawl is tilted up and the ratchet rotates when the magnetic plate is attached to the permanent magnet.

3. The magnetic ratchet hinge structure according to claim 2, wherein the pulling plate is located on an outer ring tangential line of the ratchet.