阅读说明：本技术 一种隐藏式双推门折叠合页 (Hidden double-sliding door folding hinge ) 是由 赵永宏 于 2021-08-29 设计创作，主要内容包括：本发明属于铰链技术领域,涉及一种隐藏式双推门折叠合页,包括连接件、门框合页、门扇合页、第一键轴、第二键轴、第一定位环、第二定位环、第一弹簧和第二弹簧,门框合页包括第一轴筒和第一固定片,门扇合页包括第二轴筒和第二固定片,连接件的一侧设有两个第一外轴筒,另一侧设有两个第二外轴筒,第一轴筒铰接在两个第一外轴筒之间,第二轴筒铰接在两个第二外轴筒之间,第一定位环和第二定位环均具有起伏结构,第一键轴与第二键轴的截面轮廓均被分隔为若干不连续的同心弧边,第一定位环具有第一通孔,第二定位环具有第二通孔。本折叠合页使门可双向打开,隐藏式安装,能让门扇停留在特定的开度。(The invention belongs to the technical field of hinges, and relates to a hidden double-push-door folding hinge which comprises a connecting piece, a door frame hinge, a door leaf hinge, a first key shaft, a second key shaft, a first positioning ring, a second positioning ring, a first spring and a second spring. This folding hinge makes the door can two-wayly open, and hidden installation can let the door leaf stop in specific aperture.)

1. The utility model provides a hidden folding hinge of two push-type doors which characterized in that: the door frame hinge comprises a first shaft barrel with an undulating edge and a first fixing piece extending from the tangential direction of the first shaft barrel, the door leaf hinge comprises a second shaft barrel with an undulating edge and a second fixing piece extending from the tangential direction of the second shaft barrel, two first outer shaft barrels are arranged on one side of the connecting piece, two second outer shaft barrels are arranged on the other side of the connecting piece, the first shaft barrel, the first positioning ring and the first spring are hinged between the two first outer shaft barrels through the first key shaft, the second shaft barrel, the second positioning ring and the second spring are hinged between the two second outer shaft barrels through the second key shaft, and the first positioning ring and the second positioning ring are provided with undulating structures matched with the undulating edge, the cross sections of the first key shaft and the second key shaft are of a multi-edge structure, the end points of the multi-edge structure are located on the same circumcircle, the first positioning ring is provided with a first through hole matched with the cross section of the first key shaft, and the second positioning ring is provided with a second through hole matched with the cross section of the second key shaft.

2. The hidden double sliding door folding hinge according to claim 1, characterized in that: the connecting piece is provided with a front groove for accommodating the first fixing piece and a rear groove for accommodating the second fixing piece.

3. The hidden double sliding door folding hinge according to claim 2, characterized in that: the first fixing plate is provided with a raised door frame fixing part on one surface back to the front groove.

4. The hidden double sliding door folding hinge according to claim 1, characterized in that: the undulation structure is a peak-valley structure with a period of 90 degrees.

5. The hidden double sliding door folding hinge according to claim 1, characterized in that: the cross section of the contact position of the first key shaft and the first positioning ring is of a regular polygon structure, and the cross section of the contact position of the second key shaft and the second positioning ring is of a regular polygon structure.

6. The hidden double sliding door folding hinge according to claim 1, characterized in that: the first key shaft and the second key shaft are of a structure that a plurality of tangent planes parallel to the axial direction are arranged on the surface of the round rod.

7. The hidden double sliding door folding hinge according to claim 1, characterized in that: the first key shaft and the second key shaft are of a structure that a plurality of key grooves parallel to the axial direction are arranged on the surface of a round bar.

Technical Field

The invention relates to the technical field of hinges, in particular to a hidden type double-sliding-door folding hinge.

Background

The hinge, also known as hinge, is a part that connects two parts of an object and enables the object to move, and is generally used for structures such as door leaves and window sashes. Wherein two sliding door hinges are special hinges that can let the door leaf have two-way function of pushing away: the hinge is mainly composed of a connecting piece, a door frame hinge and a door leaf hinge which are hinged with each other, and the opening and the turning of the connecting piece relative to the door frame hinge are opposite to the opening and the turning of the connecting piece relative to the door leaf hinge, so that the bidirectional pushing function can be realized. The double-push-door hinge generally has no multi-angle stop function, more door leaves can be automatically closed and reset, and the double-push-door hinge is multipurpose for a simple door or a simple access door of a public toilet and is not suitable for a common door. Another structure of the hinge is composed of a door frame hinge and a door leaf hinge which are hinged with each other, wherein the door leaf hinge can rotate relative to the door frame hinge within 180 degrees, but the structure can expose the door frame hinge from two sides of the door, and is not attractive.

It is therefore desirable to provide a new hinge structure that provides an aesthetically pleasing installation and allows the door leaf to stay in the open position.

Disclosure of Invention

The invention mainly aims to provide a hidden double-push-door folding hinge which can enable the installation to be attractive and a door leaf to stay at a front opening position and a rear opening position.

The invention realizes the purpose through the following technical scheme: a hidden double-push-door folding hinge comprises a connecting piece, a door frame hinge, a door leaf hinge, a first key shaft, a second key shaft, a first positioning ring, a second positioning ring, a first spring and a second spring, wherein the door frame hinge comprises a first shaft barrel with a fluctuating edge and a first fixing piece extending from the tangential direction of the first shaft barrel, the door leaf hinge comprises a second shaft barrel with a fluctuating edge and a second fixing piece extending from the tangential direction of the second shaft barrel, two first outer shaft barrels are arranged on one side of the connecting piece, two second outer shaft barrels are arranged on the other side of the connecting piece, the first shaft barrel, the first positioning ring and the first spring are fixed on the connecting piece, the first key shaft is hinged between the two first outer shaft barrels, the second shaft barrel, the second positioning ring and the second spring are fixed on the connecting piece, the second key shaft is hinged between the two second outer shaft barrels, the first positioning ring and the second positioning ring are both provided with undulating structures matched with the undulating edges, the cross sections of the first key shaft and the second key shaft are of multi-edge structures with end points falling on the same circumcircle, the first positioning ring is provided with a first through hole matched with the cross section of the first key shaft, and the second positioning ring is provided with a second through hole matched with the cross section of the second key shaft.

Specifically, the connecting piece has a front groove accommodating the first fixing piece and a rear groove accommodating the second fixing piece.

Furthermore, one surface of the first fixing sheet, which is back to the front groove, is provided with a raised doorframe fixing part.

Specifically, the undulating structures on the first positioning ring and the second positioning ring are peak-valley structures with a period of 90 degrees.

Specifically, the cross section of the contact position of the first key shaft and the first positioning ring is of a regular polygon structure, and the cross section of the contact position of the second key shaft and the second positioning ring is of a regular polygon structure.

Specifically, the first key shaft and the second key shaft are of a structure in which a plurality of tangential planes parallel to the axial direction are arranged on the surface of a round rod.

Specifically, the first key shaft and the second key shaft are of a structure that a plurality of key grooves parallel to the axial direction are arranged on the surface of a round bar.

The technical scheme of the invention has the beneficial effects that:

this folding hinge can make the door leaf open in two-way, and hidden installation does not influence the integrality of door outward appearance face, compact structure to can let the door leaf stop in specific opening angle.

Drawings

FIG. 1 is an assembly view of the folding hinge of example 1;

FIG. 2 is an exploded view of the folding hinge of example 1;

FIG. 3 is a top view of the retaining ring of embodiment 1;

FIG. 4 is an axial perspective view of a key shaft of embodiment 1;

FIG. 5 is a schematic view of the relative position relationship between the foldable hinge and the door frame and door leaf when the door is closed;

FIG. 6 is a schematic view of the relative position relationship between the foldable hinge and the door frame and the door leaf when the door is opened inward;

FIG. 7 is a schematic view of the relative position relationship between the foldable hinge and the door frame and the door leaf when the door is opened to the outside;

FIG. 8 is an axial bottom view of the key shaft of embodiment 2;

FIG. 9 is an axial bottom view of a key shaft of embodiment 3.

The figures in the drawings represent:

1-connecting piece, 11-first outer shaft barrel, 12-second outer shaft barrel, 13-front groove and 14-rear groove;

2-a door frame hinge, 21-a first shaft cylinder, 22-a first fixing plate and 23-a door frame fixing part;

3-a door leaf hinge, 31-a second shaft barrel and 32-a second fixing sheet;

4 a-first key shaft, 4 b-second key shaft, 41-tangent plane, 42-keyway;

5-a first positioning ring, 51-a first through hole;

6-second positioning ring, 61-second through hole;

7 a-a first spring, 7 b-a second spring;

8-a door frame;

9-door leaf.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example 1:

as shown in fig. 1 to 7, the hidden folding hinge for double sliding doors of the present invention comprises a connecting member 1, a door frame hinge 2, a door leaf hinge 3, a first key shaft 4a, a second key shaft 4b, a first positioning ring 5, a second positioning ring 6, a first spring 7a and a second spring 7b, wherein the door frame hinge 2 comprises a first shaft tube 21 having a wavy edge and a first fixing plate 22 extending from a tangential direction of the first shaft tube 21, the door leaf hinge 3 comprises a second shaft tube 31 having a wavy edge and a second fixing plate 32 extending from a tangential direction of the second shaft tube 31, one side of the connecting member 1 is provided with two first outer shaft tubes 11, the other side is provided with two second outer shaft tubes 12, the first shaft tube 21, the first positioning ring 5 and the first spring 7a are fixed on the connecting member 1, the first key shaft 4a is hinged between the two first outer shaft tubes 11, the second shaft tubes 31, the second spring 7a is hinged between the two first outer shaft tubes 11, The second positioning ring 6 and the second spring 7b are hinged between the two second outer shaft cylinders 12 through the second key shaft 4b fixed on the connecting piece 1, the first positioning ring 5 and the second positioning ring 6 are both provided with undulating structures matched with undulating edges, the cross sections of the first key shaft 4a and the second key shaft 4b are multi-edge structures with end points falling on the same circumcircle, the cross section profiles of the first key shaft 4a and the second key shaft 4b are divided into a plurality of discontinuous concentric arc edges 42 by a plurality of gap edges 41, the first positioning ring 5 is provided with a first through hole 51 matched with the cross section of the first key shaft 4a, and the second positioning ring 6 is provided with a second through hole 61 matched with the cross section of the second key shaft 5 b. The cross-sectional configuration of the first key 4a does not prevent the first outer barrel 11 from rotating relative to the first outer barrel 21 but allows only axial movement of the first retaining ring 5, and the cross-sectional configuration of the second key 4b does not prevent the second outer barrel 31 from rotating relative to the second outer barrel 12 but allows only axial movement of the second retaining ring 6. The door frame hinge 2 is fixed to the door frame 8, and the door leaf hinge 3 is fixed to the door frame 9. When the door frame 9 rotates about the axis of the first key shaft 4a, the door frame 9 is opened inward, and when the door frame 9 rotates about the axis of the second key shaft 4b, the door frame 9 is opened outward. The first positioning ring 5 is always pressed against the fluctuating edge of the first shaft cylinder 21 by the first spring 7a, and the second positioning ring 6 is always pressed against the fluctuating edge of the second shaft cylinder 31 by the second spring 7b, so that the first positioning ring 5 and the second positioning ring 6 can block the rotation of the doorframe 9 due to elasticity without external force; when a person pulls the door, the first key shaft 4a and the first positioning ring 5 rotate along with the connecting piece 1, but the first positioning ring 5 is pushed open by the matching relationship between the first shaft cylinder 21 and the first positioning ring 5, and the first spring 7a is compressed until the first positioning ring 5 rotates relative to the first shaft cylinder 21 for a period (90 degrees in the embodiment) and the first positioning ring 5 pushes the first shaft cylinder 21 again to block the rotation of the door frame 9; when a person pushes the door, the door leaf hinge 3 rotates, but the second positioning ring 6 is pushed open by the matching relationship between the second shaft 31 and the second positioning ring 6, and the second spring 7b is compressed until the second positioning ring 6 pushes the second shaft 31 again to block the rotation of the door frame 9 after the second shaft 31 rotates relative to the second positioning ring 6 for one period (90 ° in the embodiment). This folding hinge can make the door leaf open in two-way, and hidden installation does not influence the integrality of door outward appearance face, compact structure to can let the door leaf stop in specific opening angle.

As shown in fig. 5 to 7, the attachment 1 has a front recess 13 accommodating the first fixing piece 22 and a rear recess 14 accommodating the second fixing piece 32. When the double-sliding door hinge is folded in a Z shape, the first fixing piece 22 is tightly attached to the inner wall of the front groove 13, and the second fixing piece 32 is tightly attached to the inner wall of the rear groove 14, so that the door seam when the door is closed can be reduced.

As shown in fig. 5 to 7, the first fixing piece 22 is provided with a protruding doorframe fixing portion 23 on a surface facing away from the front recess 13. During the use, the medial surface of door frame 9 has the recess that is used for fixed second stationary blade 32 to realize hidden installation, and the outward appearance of the front and back wall of door frame 9 is complete, so there is a distance in both sides to the front and back two sides of door frame 9 of this folding hinge, just need utilize door frame fixed part 23 to form certain clearance between door frame 8 and door frame 9 under the wider condition of door frame 8, door frame 9 just can not scrape door frame 8 and lead to the damage in the time of opening and shutting 90 in the front and back of door frame 9 like this.

As shown in fig. 3, the undulations on the first retaining ring 5 and the second retaining ring 6 are in a 90 ° periodic peak-to-valley configuration. Thus, the door frame 9 will be retained in a position of 90 degrees each time, and since the wall surface on which the door frame 8 is located is often perpendicular to the closed position of the door frame 9, the door frame 9 can be retained against the wall surface without using a door stopper or a floor stopper.

As shown in fig. 4, the cross section of the position where the first key shaft 4a contacts the first retaining ring 5 is a regular hexagon, and the cross section of the position where the second key shaft 4b contacts the second retaining ring 6 is a regular hexagon. Because the first through hole 51 matches the cross section of the first key shaft 5a and the second through hole 61 matches the cross section of the second key shaft 5b, the cross-sectional structure of the first key shaft 4a and the second key shaft 4b also enables the cross-sectional structure of the first key shaft 4a not to prevent the first outer cylinder 11 from rotating relative to the first outer cylinder 21 but only to allow the first positioning ring 5 to move axially, and the cross-sectional structure of the second key shaft 4b not to prevent the second cylinder 31 from rotating relative to the second outer cylinder 12 but only to allow the second positioning ring 6 to move axially. Meanwhile, the structure is convenient for cutting. In practical application, the cross-sectional structure can be other polygons to achieve the same purpose. The positions of the first key shaft 4a and the second key shaft 4b that are not in contact with the retainer ring may be made circular, and the structures of the first shaft tube 21 and the second shaft tube 31 may be changed accordingly.

Example 2:

as shown in fig. 8, the difference from embodiment 1 is that: the cross-sectional shapes of the first key shaft 4a and the second key shaft 4b are octagonal structures having four tangent planes 41, and the structures of the first shaft cylinder 21 and the second shaft cylinder 31 are changed correspondingly. In addition, the structure may also adopt a hexagonal-like structure with three tangent planes 41, etc., which can realize that the cross-sectional structure of the first key shaft 4a does not prevent the first outer shaft tube 11 from rotating relative to the first outer shaft tube 21 but only allows the first positioning ring 5 to axially move, and the cross-sectional structure of the second key shaft 4b does not prevent the second outer shaft tube 31 from rotating relative to the second outer shaft tube 12 but only allows the second positioning ring 6 to axially move.

Example 3:

as shown in fig. 9, the difference from embodiment 1 is that: the first key shaft 4a and the second key shaft 4b are configured to have two key grooves 42 parallel to the axial direction on the surface of a round bar. The keyway 42 arrangement also provides a detent effect for the first retaining ring 5 and the second retaining ring 6 because the first through hole 51 matches the cross-section of the first key shaft 5a and the second through hole 61 matches the cross-section of the second key shaft 5 b. In practical applications, the cross-sectional structure may include only one key slot or three or more key slots, and the structures of the first shaft barrel 21 and the second shaft barrel 31 are changed accordingly.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.