EP4621179A1

EP4621179A1 - Hidden hinge

Info

Publication number: EP4621179A1
Application number: EP23890629.1A
Authority: EP
Inventors: Zhaojian WU
Original assignee: Guangdong Zhaogao Metal Technology Co Ltd
Current assignee: Guangdong Zhaogao Metal Technology Co Ltd
Priority date: 2022-11-18
Filing date: 2023-11-03
Publication date: 2025-09-24
Also published as: WO2024104193A1; EP4621179A4; JP2025536541A; KR20250086748A; CN115929140A

Abstract

A hidden hinge includes a functional shaft (1), a housing (2) for holding the functional shaft (1), and a speed-regulating screw (3) for adjusting the flow speed of hydraulic oil in the functional shaft (1). A plate at one end of the housing (2) is provided with a longitudinal channel (201) perpendicular to an axial direction of the functional shaft (1), and a transverse channel (202) is arranged in a sidewall of the same one end of the housing (2) in a direction in consistent with the axial direction of the functional shaft (1), the transverse channel (202) and the longitudinal channel (201) are in communication with each other in a staggered manner, and a driving portion of the speed-regulating screw (3) is arranged outside the functional shaft (1) and extends into the transverse channel (202) on the housing (2); and the longitudinal channel (201) is used for insertion of a driving member (4), and the driving member (4) is provided with an engaging portion (401) engaged with first teeth (302). By means of the above arrangement, the problem in which the closing speed cannot be adjusted after a hydraulic dampening hidden hinge on the current market is installed is resolved. Installation and adjustment are convenient. Labor, financial resources and time are saved, and the needs of modern social life are met.

Description

Technical Field

The present invention relates to a hinge, in particular to a hidden hinge.

Background Technology

Currently, more and more hidden hinges are used for door leaf installation, and hidden hinges with automatic closing functions that hydraulically control the closing speed are also becoming popular. However, the adjustment of the hydraulically controlled closing speed is extremely inconvenient. For example, the patent under Patent No. 201922463281.5 and the patent under Patent No. 201922463124.4 require the speed to be adjusted before the hinge is installed. Once installed, the hinge's housing is embedded in the door leaf or door frame, making it impossible to adjust the closing speed. If the closing speed is unsatisfactory and needs adjustment, the only option is to remove the housing and re-adjust the hinge. This involves repeating the door installation process and causes significant inconvenience for installation and debugging.

Content of the invention

The main technical problem solved by the present invention is to provide a hidden hinge, which can solve the problem that the closing speed of the hydraulic dampening hidden hinges on the current market cannot be easily adjusted after installation.
In order to solve the above technical problem, a technical solution adopted by the present invention is: to provide a hidden hinge, including a functional shaft, a housing for holding the functional shaft, and a speed-regulating screw for adjusting a flow speed of a hydraulic oil in the functional shaft, a longitudinal channel perpendicular to an axial direction of the functional shaft is provided on a plate at one end of the housing, a transverse channel is disposed on a sidewall at the same one end of the housing in a direction consistent with the axial direction of the functional shaft, the transverse channel and the longitudinal channel are in communication with each other in a staggered manner, one end of the speed-regulating screw is a needle rod portion in a shape with a varying diameter, another end of the speed-regulating screw is a driving portion having a cylindrical body provided with first teeth, a middle section of the speed-regulating screw is provided with a thread engaging with a first thread on an inner wall of a lower cover of the functional shaft, the needle rod portion extends into a speed-regulating valve hole on a piston in the functional shaft, the driving portion is provided outside the functional shaft and extends into the transverse channel on the housing, the longitudinal channel is used for insertion of a driving member, the driving member is provided with an engaging portion engaged with the first teeth.
Furthermore, the needle rod portion of the speed-regulating screw, the middle section of the speed-regulating screw and the driving portion are separate parts.
Furthermore, the driving member as a whole is in a shape of a circular column, including an upper end portion provided with a recess and a middle section column body provided with an engaging portion, and the engaging portion is in the form of a thread.
Furthermore, a lower section of the driving member is a lower section column body with a diameter smaller than the diameter of the middle column body, a step surface is formed between the middle section column body and the lower section column body, the lower section column body is used to pass through the longitudinal channel and protrude from a lower bottom surface of the housing, a protruding portion is fitted with a gasket.
Furthermore, the transverse channel passes through the sidewall at the same one end of the housing.
Furthermore, the driving member as a whole is in a shape of a flat strip, including a handle portion and a column body provided with an engaging portion, and the engaging portion is teeth-shaped.
Furthermore, the longitudinal channel passes through the plate at one end of the housing, the transverse channel passes through the plate at the same one end of the housing.
By using the technical solution of the present invention, a speed-regulating structure is provided on the housing of the hinge. The closing speed of the hinge can be adjusted by a tool in the end face direction of the hinge after the hinge is installed, thereby solving the problem that the closing speed of the hydraulic dampening hidden hinge on the market cannot be adjusted after installation. The present invention is convenient for installation and adjustment. Labor, financial resources and time are saved, and the needs of modern social life are met.

Description of the Drawings

FIG. 1 is a schematic diagram of the functional shaft in the patent under Patent No. 201922463281.5 .
FIG. 2 is a schematic cross-sectional view of the side of the hidden hinge in a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the front of the hidden hinge in the first embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure of the speed-regulating screw of the present invention;
FIG. 5 is a schematic diagram of the structure of the driving member in the first embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of the cooperation between the driving member and the speed-regulating screw in the first embodiment of the present invention;
FIG. 7 is a schematic diagram of the structure of the separate parts of the speed-regulating screw of the present invention;
FIG. 8 is a schematic diagram of the structure of the driving member in a second embodiment of the present invention;
FIG. 9 is a first schematic cross-sectional view of the cooperation between the driving member and the speed-regulating screw in the second embodiment of the present invention;
FIG. 10 is a second schematic cross-sectional view of the cooperation between the driving member and the speed-regulating screw in the second embodiment of the present invention.

Detailed Embodiments

The preferred embodiments of the present invention are described in detail below in conjunction with FIGS. 1 to 10, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

First Embodiment:

Please refer to FIGS. 1 to 7, the first embodiment of the present invention specifically:
includes a functional shaft 1, a housing 2 for holding the functional shaft 1, and a speed-regulating screw 3 for adjusting a flow speed of a hydraulic oil in the functional shaft 1. A longitudinal channel 201 perpendicular to an axial direction of the functional shaft 1 is provided on a plate at one end of the housing 2, and a transverse channel 202 is provided on a sidewall at the same one end of the housing in a direction consistent with the axial direction of the functional shaft 1. The transverse channel 202 and the longitudinal channel 201 are in communication with each other in a staggered manner. One end of the speed-regulating screw 3 is a needle rod portion 301 in a shape with a varying diameter, and another end of the speed-regulating screw 3 is a driving portion having a cylindrical body provided with first teeth 302. A middle section of the speed-regulating screw is provided with a thread 303 engaging with a first thread 101 on an inner wall of a lower cover of the functional shaft 1. The needle rod portion 301 extends into a speed-regulating valve hole 102 on a piston in the functional shaft 1. The driving portion is provided outside the functional shaft 1 and extends into the transverse channel 202 on the housing 2. The longitudinal channel 201 is used for insertion of a driving member 4, and the driving member 4 is provided with an engaging portion 401 engaged with the first teeth 302.
Furthermore, the needle rod portion 301 of the speed-regulating screw 3, the middle section of the speed-regulating screw and the driving portion are separate parts.
Furthermore, the driving member 4 as a whole is in a shape of a circular column, including an upper end portion provided with a recess 402 and a middle section column body provided with an engaging portion 401, and the engaging portion 401 is in the form of a thread.
Furthermore, a lower section of the driving member 4 is a lower section column body with a diameter smaller than the diameter of the middle column body. A step surface 403 is formed between the middle section column body and the lower section column body. The lower section column body is configured to pass through the longitudinal channel 201 and protrude from a lower bottom surface of the housing 2. A protruding portion is fitted with a gasket 404.
By utilizing the step surface and the end surface of the gasket, the up and down axial movement of the driving member is restricted, but left and right rotation is possible.
Furthermore, the transverse channel 202 passes through the sidewall at the same one end of the housing 1.
Compared with the prior art shown in FIG. 1, the present invention extends the speed-regulating screw in the axial direction on the basis of the prior art.
In this embodiment, after the hinge is installed, the user rotates the recess on the driving member with an appropriate tool. The thread of the engaging portion of the driving member is engaged with the first teeth on the speed-regulating screw during rotation. Note: The interaction between the driving member and the speed-regulating screw is actually the transmission of a worm and a worm wheel. The rotation of the speed-regulating screw is equivalent to rotating within a threaded hole in the functional shaft, which is the hole of the first thread on the inner wall of the lower cover. This causes the entire speed-regulating screw to axially shift its position, thereby changing the position of the needle rod portion inserted in the speed-regulating valve hole in the functional shaft, and consequently altering the gap between the needle rod portion and the speed-regulating valve hole. The varying diameter of the needle rod portion means that the cross-sectional size of the segments at different positions of the needle rod portion is set according to needs. When the needle rod portion extends into the depths at different positions of the speed-regulating valve hole, the gap between the needle rod portion and the speed-regulating valve hole also changes accordingly. This in turn alters the flow rate of the hydraulic oil in the functional shaft from a pressurized oil chamber to an oil storage chamber, thereby adjusting the axial movement speed of the piston when the hinge closes, which is equivalent to achieving the closing speed adjustment of the hinge. This allows the adjustment of the closing speed of the hinge with a tool from the end face direction of the hinge after the hinge is installed, thereby solving the problem of the current hydraulic dampening hidden hinges available on the market where the closing speed cannot be adjusted after installation. This facilitates installation and adjustment, saves labor, financial resources and time, and meets the needs of modern social life.

Second Embodiment:

Please refer to FIGS. 4, 7, 8, 9 and 10, the second embodiment is:
The driving member 4 as a whole is in a shape of a flat strip, including a handle portion 405 and a column body provided with an engaging portion 401, and the engaging portion 401 is teeth-shaped.
Furthermore, the longitudinal channel 201 passes through the plate at one end of the housing 1, and the transverse channel 202 passes through the plate at the same one end of the housing 1.
In the present embodiment, in addition to the principle being substantially the same as that of the first embodiment and the effect being substantially the same, it has advantages over the first embodiment in that the driving member is easier to manufacture and does not require another tool for turning the driving member, thus making it more convenient to use.
The user inserts the column body of the driving member into the longitudinal channel 201, causing the engaging portion 401 to engage with the first teeth 302 on the speed-regulating screw. As the column body moves downwards, it drives the speed-regulating screw to rotate, and causes the entire speed-regulating screw to shift its position axially, changing the extent to which it extends into the speed-regulating valve hole, and thereby altering the flow rate of the hydraulic oil and achieving regulation of the closing speed of the hinge. When the column body is pushed all the way in and can no longer advance, the column body is turned as shown in FIG. 10, causing its engaging portion 401 to disengage from the first teeth 302 of the speed-regulating screw, and the column body can then be pulled out. When it is necessary to rotate the speed-regulating screw in the other direction, the user inserts the column body - with its engaging portion oriented in the same axial direction as the functional shaft of the hinge - into the bottom of the housing. By turning the driving member, its engaging portion engages with the first teeth of the speed-regulating screw, and then by pulling it outwards, the speed-regulating screw can be rotated in the other direction. By pushing in or pulling out the column body, the forward and reverse rotation of the speed-regulating screw can be achieved, thus enabling the adjustability of the axial movement of the speed-regulating screw.
In the above embodiment, the needle rod portion 301 of the speed-regulating screw 3, the middle section of the speed-regulating screw and the driving portion are separate parts. The purpose is to facilitate production, and different materials can be used for each part to make it more durable and improve quality.
The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structures or replacements made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

A hidden hinge, characterized in that comprising
a functional shaft (1),

a housing (2) for holding the functional shaft (1), and

a speed-regulating screw (3) for adjusting a flow speed of a hydraulic oil in the functional shaft (1),

wherein a longitudinal channel (201) perpendicular to an axial direction of the functional shaft (1) is provided on a plate at one end of the housing (2),

wherein a transverse channel (202) is disposed on a sidewall at the same one end of the housing in a direction consistent with the axial direction of the functional shaft (1), the transverse channel (202) and the longitudinal channel (201) are in communication with each other in a staggered manner,

wherein one end of the speed-regulating screw (3) is a needle rod portion (301) in a shape with a varying diameter, another end of the speed-regulating screw (3) is a driving portion having a cylindrical body provided with first teeth (302),

wherein a middle section of the speed-regulating screw is provided with a thread (303) engaging with a first thread (101) on an inner wall of a lower cover of the functional shaft (1),

wherein the needle rod portion (301) extends into a speed-regulating valve hole (102) on a piston in the functional shaft (1), the driving portion is provided outside the functional shaft (1) and extends into the transverse channel (202) on the housing (2),

wherein the longitudinal channel (201) is used for insertion of a driving member (4), the driving member (4) is provided with an engaging portion (401) engaged with the first teeth (302).
The hidden hinge as claimed in claim 1, characterized in that the needle rod portion (301) of the speed-regulating screw (3), the middle section of the speed-regulating screw and the driving portion are separate parts.
The hidden hinge as claimed in claim 1, characterized in that the driving member (4) as a whole is in a shape of a circular column, including an upper end portion provided with a recess (402) and a middle section column body provided with the engaging portion (401), the engaging portion (401) is in the form of a thread.
The hidden hinge as claimed in claim 3, characterized in that a lower section of the driving member (4) is a lower section column body with a diameter smaller than a diameter of the middle column body, a step surface (403) is formed between the middle section column body and the lower section column body, the lower section column body is configured to pass through the longitudinal channel (201) and protrude from a lower bottom surface of the housing (2), a protruding portion is fitted with a gasket (404).
The hidden hinge as claimed in claim 4, characterized in that the transverse channel (202) passes through the sidewall at the same one end of the housing (1).
The hidden hinge as claimed in claim 1, characterized in that the driving member (4) as a whole is in a shape of a flat strip, including a handle portion (405) and a column body provided with the engaging portion (401), the engaging portion (401) is teeth-shaped.
The hidden hinge as claimed in claim 6, characterized in that the longitudinal channel (201) passes through the plate at the one end of the housing (1), the transverse channel ((202)) passes through the plate at the same one end of the housing (1).