Patent Description:
In the current side hung doors, sliding doors, folding doors and the like, a door plate and a door body are generally connected by hinges. When the door plate is opened and closed, the door plate is always outside the door body, occupying a large space and bringing a lot of inconvenience to life.

<CIT> discloses a kind of furniture capable of accommodating a door plate, which mainly realizes the function of moving the door plate in and out through a scissors-shaped assembly. The scissors-shaped assembly comprises two cross beams connected in a hinged manner. Upper ends of the two cross beams may be pivotally fixed on a cavity, and lower ends of the two cross beams are provided in a frame and may move pivotally and vertically. When the door plate moves in the cavity, the upper ends of the two cross beams are maintained at the same height, and the lower ends may move vertically.

Although the above scissors-shaped assembly may realize the moving in and out of the door plate, the two hinged cross beams are prone to problems of asynchronous sliding, and because the upper ends of the cross beams are at the same height, the required mounting accuracy is relatively high. <CIT> discloses a synchronous sliding mechanism for a movement guide of a side door comprising a guide rail, a first connecting rod mechanism, and a second connecting rod mechanism, the first connecting rod mechanism comprises a fixed base, a first connecting rod and a second connecting rod. Two sliding ends on the guide rail are provided on other ends of the first connecting rod and the second connecting rod respectively, and when the guide rail reciprocates in a horizontal axial direction, the two sliding ends are close to or far away from each other. The second connecting rod mechanism comprises a third connecting rod and a fourth connecting rod. This document is silent about the pivotal connection of the first and second connecting rods to the fixed base and on the fact that these connecting rods are located on two sides of a horizontal central axis of the fixed base. This document also fails to disclose, at least, that the second connecting rod mechanism comprises a sliding base and that the third connecting rod and the fourth connecting rod are symmetrically provided in the horizontal central axial direction of the fixed base, that the sliding base and the fixed base are located on a same side of the guide rail, and ends of the third connecting rod and the fourth connecting rod on a same side are pivotally connected to the sliding base, and other ends are pivotally connected to the first connecting rod and the second connecting rod respectively. <CIT> discloses a two linkage door window structures that push away of water proofness that excels in, the fruit pick-up device includes a frame body, the pivot mounting hole has all been opened to the top inner wall both sides of framework, and the inner wall of two pivot mounting holes has all cup jointed the pivot, two one side outer wall of pivot has cup jointed left casement and right casement respectively, the top inner wall and the equal push rod fix with screw of bottom inner wall of framework have same slide bar, and one side outer wall sliding connection of slide bar has a sleeve, the mounting groove has all been opened to one side outer wall of left side casement and one side outer wall of right casement, and the inner wall of two mounting grooves has left push rod and right pushrod through hinged joint respectively. Such document fails to disclose at least the features of the characterizing portion of claim <NUM>.

An objective of the present invention is to provide a synchronous sliding mechanism, a side hidden door system, and a cabinet body with the side hidden door system. Through the synchronous sliding mechanism, a door body may be telescopic, and may be stored and hidden synchronously and stably, thereby effectively reducing the occupied space of the door body.

In an aspect, the present invention provides a synchronous sliding mechanism for a movement guide of a side door. The synchronous sliding mechanism comprises a guide rail and a first connecting rod mechanism, the first connecting rod mechanism comprises two sliding ends provided on the guide rail; and when the guide rail reciprocates in a horizontal axial direction, the two sliding ends are close to or far away from each other.

The first connecting rod mechanism comprises a fixed base, a first connecting rod and a second connecting rod; ends of the first connecting rod and the second connecting rod on a same side are pivotally connected to the fixed base; the first connecting rod and the second connecting rod are located on two sides of a horizontal central axis of the fixed base; and the two sliding ends are provided on other ends of the first connecting rod and the second connecting rod respectively.

The first connecting rod and the second connecting rod are symmetrically provided in a horizontal central axial direction of the fixed base.

The first connecting rod and the second connecting rod are pivotally connected to the fixed base.

The synchronous sliding mechanism further comprises a second connecting rod mechanism, the second connecting rod mechanism comprises a sliding base, and a third connecting rod and a fourth connecting rod are symmetrically provided in the horizontal central axial direction of the fixed base; the sliding base and the fixed seat are located on a same side of the guide rail; and ends of the third connecting rod and the fourth connecting rod on a same side are pivotally connected to the sliding base, and other ends are pivotally connected to the first connecting rod and the connecting rod respectively.

The synchronous sliding mechanism further comprises a horizontal shaft, wherein one end of the horizontal shaft is fixed on the fixed base and another end is in slidingly matched with the sliding base.

Preferably, the horizontal shaft is provided with a sliding groove; the sliding base is provided with a sliding piece; and the sliding base slides in the sliding groove of the horizontal shaft.

Preferably, the sliding piece is a pulley.

Preferably, the third connecting rod and the fourth connecting rod are respectively provided with bending portions, and the bending portions enable respective rod bodies of the third connecting rod and the fourth connecting rod to be positioned in different planes in a depth direction.

Preferably, the bending portions divide the respective rod bodies of the third connecting rod and the fourth connecting rod into front rod portions and rear rod portions; the front rod portions of the third connecting rod and the fourth connecting rod are pivotally connected to the first connecting rod and the second connecting rod respectively; the rear rod portions of the third connecting rod and the fourth connecting rod are pivotally connected to the sliding base respectively; and the front rod portions are located on inner sides of the rear rod portions in the depth direction.

Preferably, the front rod portions and the rear rod portions are parallel with each other.

In a second aspect, the present invention provides a side hidden door system, including a door plate and the above synchronous sliding mechanism, wherein the door plate is hinged with the guide rail.

In a third aspect, the present invention provides a cabinet body, including a side hidden door system. The synchronous sliding mechanism is provided on a side of the cabinet body.

Preferably, the cabinet body comprises a side panel, the fixed base of the synchronous sliding mechanism is fixed on the side panel, and the synchronous sliding mechanism is located in the cabinet body.

Preferably, the cabinet body comprises a built-in plate, an accommodating cavity is formed between the built-in plate and the side panel closer to the built-in plate, and the synchronous sliding mechanism is located in the accommodating cavity.

Preferably, the fixed base of the synchronous sliding mechanism is fixed on the side panel.

Preferably, the fixed base of the synchronous sliding mechanism is fixed on the built-in plate.

Preferably, upper and lower sliding rails are provided in the cabinet body, sliding pieces are provided at two ends of the guide rail, and the guide rail is slidingly connected with the upper and lower sliding rails through the sliding pieces at the two ends.

The present invention has the following beneficial effects: a stable quadrilateral symmetrical in the horizontal axial direction is formed between the first connecting rod mechanism and the second connecting rod mechanism; when the two sliding ends of the first connecting rod mechanism slide up and down in the guide rail, a pivotal movement of the second connecting rod mechanism is driven, so that the second connecting rod mechanism reciprocates in a direction of the horizontal shaft; and the combination of the first connecting rod mechanism and the second connecting rod mechanism improves the overall stability and synchronization. The present invention has a stable structure and excellent synchronization performance, is suitable for hidden door furniture, and has broad market prospects.

To illustrate the technical solutions in embodiments of the present application more clearly, the accompanying drawings for describing the embodiments are introduced briefly below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings may also be obtained from these accompanying drawings without creative efforts.

In the drawings: synchronous sliding mechanism <NUM>, horizontal shaft <NUM>, sliding groove <NUM>, guide rail <NUM>, first connecting rod mechanism <NUM>, first connecting rod <NUM>, second connecting rod <NUM>, sliding end <NUM>, fixed base <NUM>, second connecting rod mechanism <NUM>, sliding base <NUM>, bending portion <NUM>, third connecting rod <NUM>, fourth connecting rod <NUM>, front rod portion <NUM>, rear rod portion <NUM>, side hidden door system <NUM>, door plate <NUM>, cabinet body <NUM>, side door plate <NUM>, built-in plate <NUM>, accommodating cavity <NUM>, upper sliding rail <NUM>, lower sliding rail <NUM>.

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be described clearly and completely in combination with the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that orientation or position relationships indicated by terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like refer to orientations or position relationships shown in the accompanying drawings, and these terms are merely for facilitating description of the present invention and simplifying the description, but not for indicating or implying that the mentioned device or elements must have a specific orientation and must be established and operated in a specific orientation, and thus, these terms should not be understood as a limitation to the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are merely for the purpose of describing specific embodiments, and is not intended to limit the present invention.

The present invention discloses a synchronous sliding mechanism <NUM>, as shown in <FIG>, <FIG>, <FIG> and <FIG>. The synchronous sliding mechanism <NUM> comprises a guide rail <NUM> and a first connecting rod mechanism <NUM>, wherein the first connecting rod mechanism <NUM> comprises a fixed base <NUM>, and a first connecting rod <NUM> and a second connecting rod <NUM> which are symmetrical in a horizontal central axial direction of the fixed base <NUM>; ends of the first connecting rod <NUM> and the second connecting rod <NUM> on a same side are pivotally connected to the fixed base <NUM>; sliding ends <NUM> corresponding to the guide rail <NUM> are provided at the other ends of the first connecting rod <NUM> and the second connecting rod <NUM>; and when the guide rail <NUM> reciprocates in a horizontal axial direction, the sliding ends <NUM> of the first connecting rod <NUM> and the second connecting rod <NUM> are close to or far away from each other.

Preferably, the first connecting rod <NUM> and the second connecting rod <NUM> are pivotally connected to the fixed base <NUM> through a pivotal connection piece or pivotally connected to the fixed base <NUM> respectively. In the embodiment, the first connecting rod <NUM> and the second connecting rod <NUM> are pivotally connected to the fixed base <NUM> respectively. In this way, when the guide rail <NUM> is far away from the fixed base <NUM>, the sliding ends <NUM> of the first connecting rod <NUM> and the second connecting rod <NUM> in the guide rail <NUM> are gradually close to each other; and when the guide rail <NUM> is close to the fixed base <NUM>, the sliding ends <NUM> of the first connecting rod <NUM> and the second connecting rod <NUM> in the guide rail <NUM> are gradually away from each other. Due to the symmetrical design of the first connecting rod <NUM> and the second connecting rod <NUM>, the sliding ends <NUM> move in the guide rail more synchronously.

Based on the embodiment <NUM>, the synchronous sliding mechanism <NUM> provided by the embodiment <NUM> is shown in <FIG> and further comprises a second connecting rod mechanism <NUM>, wherein the second connecting rod mechanism <NUM> comprises a sliding base <NUM>, and a third connecting rod <NUM> and a fourth connecting rod <NUM> which are symmetrically provided in the horizontal central axial direction of the fixed base <NUM>; the sliding base <NUM> and the fixed base <NUM> are located on a same side of the guide rail <NUM>; and ends of the third connecting rod <NUM> and the fourth connecting rod <NUM> on a same side are pivotally connected to the sliding base <NUM>, and another end of the third connecting rod <NUM> is pivotally connected to the first connecting rod <NUM> and the other end of the fourth connecting rod <NUM> is pivotally connected to the second connecting rod <NUM>.

As shown in <FIG> and <FIG>, the synchronous sliding mechanism <NUM> is further provided with a horizontal shaft <NUM> with a sliding groove <NUM> in a horizontal direction, one end of the horizontal shaft <NUM> is fixed on the fixed base <NUM> and the other end of the horizontal shaft <NUM> is slidingly matched with the sliding base <NUM>, and the sliding base is provided with a sliding piece corresponding to the sliding groove <NUM>. Preferably, the sliding piece used in the embodiment is a pulley, and the pulley cooperates with the sliding groove <NUM>, so that the third connecting rod <NUM> and the fourth connecting rod <NUM> may slide smoothly along the horizontal shaft <NUM> in the horizontal direction. When the guide rail <NUM> moves, the sliding ends <NUM> of the first sliding rod <NUM> and the second connecting rod <NUM> slide along the guide rail <NUM> in a vertical direction, the third connecting rod <NUM> and the fourth connecting rod <NUM> slide along the horizontal shaft <NUM> in the horizontal direction, a quadrilateral structure formed by the first connecting rod mechanism <NUM> and the second connecting rod mechanism <NUM> enables the whole mechanism to operate smoothly and stably, and the multi-rod linkage of the first connecting rod <NUM>, the second connecting rod <NUM>, the third connecting rod <NUM> and the fourth connecting rod <NUM> enables the operation process of the whole mechanism to be more synchronous.

The third connecting rod <NUM> and the fourth connecting rod <NUM> are provided with bending portions <NUM>. Taking the third connecting rod <NUM> as an example, the bending portion <NUM> divides the third connecting rod <NUM> into a front rod portion <NUM> and a rear rod portion <NUM> which are located in different planes. More preferably, the front rod portion <NUM> and the rear rod portion <NUM> of the third connecting rod <NUM> are parallel with each other, and the front rod portion <NUM> is located on an inner side of the rear rod portion <NUM> in a depth direction. Due to the presence of the bending portions <NUM>, the third connecting rod <NUM> and the fourth connecting rod <NUM> are staggered in the depth direction. Meanwhile, rear parts of the third connecting rod <NUM> and the fourth connecting rod <NUM> are pivotally connected to the sliding base <NUM>, so that the pulley on the sliding base <NUM> is more matched with the sliding groove <NUM> in the horizontal shaft <NUM>. In the process that the sliding base <NUM> slides along the horizontal shaft <NUM>, there is no deviation in the depth direction, and the sliding process is more stable.

As shown in <FIG> and <FIG>, the present invention further discloses a side hidden door system <NUM>, which is provided with a door plate <NUM> and the synchronous sliding mechanism <NUM> as described in the embodiment <NUM>. Specifically, the guide rail <NUM> is provided with a hinged piece, and the door plate <NUM> is hinged with the guide rail <NUM>. The door plate <NUM> is opened and closed through the hinged piece. Meanwhile, when the door plate <NUM> is parallel with the guide rail <NUM>, by pushing and pulling the door plate <NUM>, the expansion and retraction of the door plate <NUM> may be realized through the expansion and retraction of the synchronous sliding mechanism <NUM>. The telescopic door is widely applied and can obviously reduce the space occupied by the door body.

As shown in <FIG>, <FIG>, <FIG> and <FIG>, the present invention further discloses a cabinet body, including the side hidden door system <NUM> as described in the embodiment <NUM>. In the embodiment, the cabinet body <NUM> comprises a built-in plate <NUM>, wherein an accommodating cavity <NUM> is formed between the built-in plate <NUM> and a side panel <NUM> closer to the built-in plate <NUM>, the fixed base <NUM> of the synchronous sliding mechanism <NUM> is fixed on the built-in plate <NUM>, an upper sliding rail <NUM> and a lower sliding rail <NUM> are provided at an upper end and a lower end of the accommodating cavity <NUM> respectively, sliding pieces corresponding to the upper sliding rail <NUM> and the lower sliding rail <NUM> are provided at two ends of the guide rail <NUM>, and the guide rail <NUM> is slidingly connected with the upper sliding rail and the lower sliding rail through the sliding pieces at the two ends. When the door plate <NUM> is parallel with the guide rail <NUM>, the door plate <NUM> is pushed and pulled, the door plate <NUM> slides stably on the upper sliding rail <NUM> and the lower sliding rail <NUM> of the accommodating cavity <NUM> through the sliding pieces at the two ends of the guide rail <NUM>, and the door plate <NUM> retracts through the synchronous sliding mechanism <NUM>.

In the embodiment, the synchronous sliding mechanism may be widely applied in the field of household furnishing. The door body may be opened and stored hidden through the synchronous sliding mechanism, so that the space requirement of the opened door body is reduced. The synchronous sliding mechanism has a simple structure and ensures the stable operation of the side hidden door in the opening process of the side hidden door, and the door body is not prone to shaking.

Claim 1:
A synchronous sliding mechanism (<NUM>) for a movement guide of a side door, comprising: a guide rail (<NUM>), a first connecting rod mechanism (<NUM>), and a second connecting rod mechanism (<NUM>), wherein:
the first connecting rod mechanism (<NUM>) comprises a fixed base (<NUM>), a first connecting rod (<NUM>) and a second connecting rod (<NUM>); and two sliding ends (<NUM>) on the guide rail (<NUM>) are provided on other ends of the first connecting rod (<NUM>) and the second connecting rod (<NUM>) respectively, and when the guide rail (<NUM>) reciprocates in a horizontal axial direction, the two sliding ends (<NUM>) are close to or far away from each other;
the second connecting rod mechanism (<NUM>) comprises a third connecting rod (<NUM>) and a fourth connecting rod (<NUM>),
characterized in that ends of the first connecting rod (<NUM>) and the second connecting rod (<NUM>) on a same side are pivotally connected to the fixed base (<NUM>); the first connecting rod (<NUM>) and the second connecting rod (<NUM>) are located on two sides of a horizontal central axis of the fixed base (<NUM>); in that the second connecting rod mechanism (<NUM>) comprises a sliding base (<NUM>), and in that the third connecting rod (<NUM>) and the fourth connecting rod (<NUM>) are symmetrically provided in the horizontal central axial direction of the fixed base (<NUM>); the sliding base (<NUM>) and the fixed base (<NUM>) are located on a same side of the guide rail (<NUM>); and ends of the third connecting rod (<NUM>) and the fourth connecting rod (<NUM>) on a same side are pivotally connected to the sliding base (<NUM>), and other ends are pivotally connected to the first connecting rod (<NUM>) and the second connecting rod (<NUM>) respectively;
the synchronous sliding mechanism (<NUM>) further comprising a horizontal shaft (<NUM>), wherein one end of the horizontal shaft (<NUM>) is fixed on the fixed base (<NUM>) and another end of the horizontal shaft (<NUM>) is slidingly matched with the sliding base (<NUM>).