KR20130079727A - Chair embodied with locking apparatus of seat folding - Google Patents

Abstract

Chair seat embodying the seat folding device according to the present invention is a seat plate rotatably installed with respect to the shaft provided in the body; An intermediate member inserted into and fixed to the shaft through a central hole, and having a concave or convex fitting portion that is elastically supported on an outer circumferential surface thereof; And a mounting space having an inner circumferential surface corresponding to the fitting portion such that the fitting portion is held by the elastic force and to which the intermediate member is mounted, and the intermediate member rotating together with the seat plate relative to the shaft in which the intermediate member is inserted and fixed. And a member.
According to the present invention, it is possible to effectively maintain the seat folding, as well as its release, by a simple operation of the user to significantly improve the efficiency and user convenience of various applications for use, storage, movement, transport, loading, etc. It can provide an effect that can be done.

Description

Chair embodied with locking apparatus of seat folding}

The present invention relates to a chair in which a seat is folded by rotation, and when the seat plate of the chair is folded in the backrest direction, the seat folding device is capable of maintaining the folded state as well as releasing the folded state more easily. Relates to a chair implemented.

In order to enhance the utility of organizing, storing, managing, stacking or stacking, seats or chairs with folding legs are generally used. Such a folding chair can be folded or unfolded seat or legs, and the shape of the folding chair can be effectively changed according to the use of the chair or when the chair is stored without using the chair, thereby effectively utilizing the physical space occupied by the chair. .

These folding chairs are widely used in various places and environments, including places where a large number of people can gather, because they have high space utilization efficiency and easy transport or movement.

However, in the conventional folding chair, when the seat plate and / or the legs are folded, there is no special device for maintaining the folded state so that when the seat plate is folded for storage or transportation, the folded seat plate is again There is a problem that unnecessary and cumbersome work is repeated, such as folding down the seat and the like again.

In other words, the conventional folding chair simply prevents the seat plate from descending again by simply tilting the seat plate more than the vertical direction or by mounting the chair at an angle to the wall, etc., and can fix the seat plate itself or effectively maintain the folded state. The device was not implemented.

When folding the seat plate by the structure or configuration of such a conventional folding chair, the unnecessary action of repeatedly folding the seat plate, etc. several times after being physically hit by the backrest and reacting again, is also repeated. Even the shaking or the impact may cause the problem that the chair itself collapses or the folded seat plate comes down again.

Therefore, when the seat plate is intentionally folded by the user's intention, the folding chair can be effectively maintained without being returned by external factors and the folding chair can be effectively released by the user's intention. The need to improve the structure of the large can be said.

The present invention was devised to solve the above problems and necessities, and when the seat plate of the chair is folded, the folded state (folding state) can be effectively maintained until artificial manipulation by the user's doctor is applied. Of course, the object of the present invention is to provide a chair with higher user convenience by allowing the folding of the seat plate to be released by a simple operation of the user.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Further, the objects and advantages of the present invention can be realized by a combination of the constitution and the constitution shown in the claims.

Chair to implement the seat folding device of the present invention for achieving the above object is a seat plate rotatably installed with respect to the shaft provided in the body; An intermediate member inserted into and fixed to the shaft through a central hole, and having a concave or convex fitting portion that is elastically supported on an outer circumferential surface thereof; And an inner circumferential surface of a shape corresponding to the fitting portion such that the fitting portion is supported by the elastic force, and has a mounting space in which the intermediate member is mounted, and the intermediate member rotates together with the seat plate with respect to the inserted shaft. It may be configured to include a rotating member.

In addition, the present invention may further include a horizontal support bar for supporting the seat plate, in which case the shaft may be configured to extend rearward from the horizontal support bar.

The fitting portion of the intermediate member of the present invention may be formed of an elastically supported protrusion, and the mounting space of the rotating member may be formed on an inner circumferential surface of one or more grooves into which the protrusion of the intermediate member is inserted.

Here, the medial member of the present invention comprises a central through-hole having a non-circular cross section to be fitted to the shaft; And it is provided on the outer circumferential surface of the central hole, and further comprises an elastic support made of a plate shape to be elastically supported by the space, in this case it is preferable that the protrusion is configured to be formed in the central portion of the elastic support.

In addition, the medial member of the present invention may further include a support protrusion provided at a position corresponding to the protrusion in the separation space and physically supporting the elastic force of the protrusion.

More preferably, the protrusion of the fastening member may be configured to be inserted into the groove of the rotating member when the seat plate is folded in the backrest direction or when the seat plate is unfolded, and the rotating member has the horizontal support bar when the seat plate is unfolded. The mounting groove to be seated may be configured to be formed on the lower surface.

In the case of the chair embodying the seat plate folding device of the present invention, the seat plate folding (locking or fixing) as well as its release can be made by a simple and effective operation, use, storage, moving, transport, loading It can provide an effect that can dramatically improve the efficiency and user convenience of various applications for such.

In addition, according to the present invention, each operation can be implemented as a component that is organically combined, it is possible to provide a higher efficiency in the manufacture of the finished product, including parts manufacturing and assembly, and through the simple structure change to the existing chair structure It can be implemented effectively, resulting in higher scalability and economics.

BRIEF DESCRIPTION OF THE DRAWINGS The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to more effectively understand the technical spirit of the present invention. It should not be construed as limited to matters.
1 is a perspective view showing a preferred embodiment of the present invention in a seat plate unfolded state,
2 is a perspective view showing a preferred embodiment of the present invention with the seat plate folded,
3 is an exploded perspective view illustrating a coupling relationship between a shaft, an intermediate member, and a rotating member according to a preferred embodiment of the present invention;
Figure 4 is a perspective view showing in detail the configuration of the intermediate member according to a preferred embodiment of the present invention,
5 is an exploded perspective view illustrating a coupling relationship between a rotating member, an intermediate member, and a seat plate according to a preferred embodiment of the present invention;
6 is a cross-sectional view showing the operation relationship of the preferred embodiment of the present invention when the seat plate is unfolded,
7 is a cross-sectional view showing the operation relationship of the preferred embodiment of the present invention when the seat plate is rotated,
8 is a cross-sectional view showing the operation relationship of the preferred embodiment of the present invention when the seat plate is folded,
9 is a diagram illustrating an embodiment in which a plurality of chairs according to the present invention overlap in a horizontal direction.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a view showing a state in which the seat plate 120 is unfolded in a chair (hereinafter referred to as a chair) 100 in which a seat plate folding fixing device according to a preferred embodiment of the present invention is implemented. As shown in the drawings, the chair 100 of the present invention includes a chair 110 and a seat plate 120 of a chair like a general folding chair, a leg supporting a chair, a backrest for supporting a person's back, and the like. It can be configured.

The present invention can be applied to a chair that is folded only by a combination of a hinge and the like, as well as a chair in which only the seat plate is folded. However, in order to effectively convey the technical idea of the present invention and to highlight the essential features of the present invention, the chair of which the seat plate is folded in the following description of the present invention will be described as a preferred embodiment of the present invention.

In addition, the backrest, armrests, casters, etc. are merely for illustrating a general chair shape, and the technical idea of the present invention is not present in this part, and thus the technical idea of the present invention and the scope of the rights thereof are limited to specific chair types. Should be interpreted as not.

The seat plate 120 unfolded in the chair 100 of the present invention shown in FIG. 1 is rotatably installed on a predetermined shaft 130 that functions as a rotating shaft as shown in FIG. 2 and can be folded and folded in the backrest direction. have. The lower surface of the seat plate 120 is provided with a rotating member 150 that rotates with the rotation of the seat plate 120, is coupled to the shaft 130 together with the intermediate member 140 to be described later to support the rotational movement.

The horizontal support rod 135 is installed in the chair body 110 in the horizontal direction to form a frame of the chair body, or when the seat plate is lowered and unfolded to effectively support the seat plate 120 and the load of the person seated on the seat plate, etc. It performs the function. Unlike shown in FIG. 2, the horizontal support rod 135 may be implemented as the shaft 130 by applying the necessary shape change to the horizontal support rod 135 according to the embodiment.

As shown in FIG. 2, when the shaft 130 is configured to extend rearward from the horizontal support rod 135, the load of the seat plate 120 may be supported at both front and rear sides to distribute the load. Of course, when the seat plate 120 is unfolded, it may have an advantage of more effectively maintaining the horizontality of the seat plate 120.

Hereinafter, the specific configuration and operation relationship of the chair 100 of the present invention described with reference to FIGS. 1 and 2 will be described in detail with reference to FIG. 3.

3 is a view illustrating a coupling relationship between the shaft 130, the intermediate member 140, and the rotating member 150 constituting the chair 100 according to the present invention. As shown in FIG. 3, one end of the shaft 130 is connected to the horizontal support rod 135, and the other end of the shaft 130 is fitted to the rotating member 150 through the medium of the intermediate member 140. Since the rotating member 150 is coupled in a form fixed to the seat plate 120, it rotates together with the seat plate 120. Through this configuration, the seat plate 120 of the chair 100 according to the present invention is rotatably installed with respect to the shaft 130.

The intermediate member 140 of the present invention includes a protrusion 141, a through hole 142, an elastic support 143, a space 144, a flange 145, and a support protrusion 147 as shown in FIG. 4. It can be configured.

The intermediate member 140 is fitted with one end of the shaft 130 through the through-hole 142 of the central portion, so as not to be rotated when the seat plate 120 rotates as described below, the shaft 130 is fixed. The method of fixing the intermediate member 140 to the shaft 130 may have various application examples to those skilled in the art. In consideration of convenience of component manufacturing, ease of detachment, and certainty of fixing, one end of the shaft 130 and Most preferably, the cross section of the through hole 142 is configured to correspond to each other in a non-circular shape.

Rotating member 150 of the present invention, the intermediate member 140 is rotated with the seat plate 120 around the shaft 130 is fixed to the seat plate 120 as shown in FIG. After being fitted in the coupling space 125 formed in the coupling hole 154 and the coupling hole 127 of the seat plate 120 by a fastening means such as a bolt 10 in a form that can be attached to the seat plate 120 detachable. It is fixed.

The rotating member 150 is provided with a mounting space 151 of a hollow form, the mounting member 151, the intermediate member 140 described above, specifically, the intermediate member 140 fixed to the shaft 130 is Fitted and fitted. When the configuration is based on the combined cross section, the shaft 130 is placed on the innermost side, the intermediate member 140 is located on the outside thereof, and the rotating member 150 is positioned on the outermost side.

The protrusion 141 of the intermediate member 140 is elastically supported, and when the seat plate 120 is rotated, at least one groove 153 formed on the inner circumferential surface of the mounting space 151 of the rotating member 150 at a specific position. When the seat plate 120 is folded or the seat plate is unfolded in the horizontal direction, the protrusions 141 to the groove parts (not including the rotation radius or the rotation angle of the seat plate are inserted to be inserted into the groove part 153). It is desirable to determine the location where the 153 is provided. The cross section of the mounting space 151 of the rotating member 150 may have a circular shape so as to enable a smooth rotational motion.

Since the folding and unfolding of the seat plate 120 forms an angle of 90 degrees, the protrusions 141 are disposed in both directions, respectively, as shown in FIGS. 6 to 8, and the grooves 153 are spaced at 90 degrees apart. Can be placed. According to the exemplary embodiment, the number or position of the protrusions 141 and the grooves 153 may be modified.

In addition, since the protrusion 131 is fitted to the groove 153 when the seat plate 120 rotates as described above, the current position of the seat plate 120 is maintained unless a force of a specific threshold is applied. If such a function can be realized, as shown in FIG. 3, it can be implemented in various shapes and shapes, including a protruding form extending in the longitudinal direction, and the groove part 153 of the rotating member 150 from the corresponding point of view. So also.

On the other hand, the protrusion 131 itself may be configured to have an elastic force, of course, as shown in Figure 4 for the implementation of a more preferred embodiment is provided on the outer circumferential surface of the central through hole 142 and in the separation space 144 The protrusion 131 may be formed at a central portion of the elastic support 143 having a plate shape so as to be elastically supported.

In this case, the outer circumferential surface of the intermediate member 140 including the elastic member 143 so that the rotating member 150, specifically, the mounting space 151 of the rotating member 150 can be smoothly supported and guide the rotational movement. The cross section is preferably configured to include an arc having a diameter corresponding to the diameter of the mounting space 151, and to be configured to be nearly circular in general.

In addition, the media member (to prevent excessive elastic deformation or shape distortion caused by the continuous use of the protrusion 141 or the elastic support 143 and thereby prevent the phenomenon that the seat plate 120 does not rotate smoothly, etc.) 140 may further include a support protrusion 147 provided at a position corresponding to the protrusion 141 in the separation space 144 to physically support the protrusion 141 or the elastic support 143.

Through the support protrusion 147, the physical movement distance of the protrusion 141 or the elastic support 143 can be limited within a specific range, thereby ensuring a more long-term and smooth rotational movement of the seat plate 120, and the intermediate member ( The holding and releasing of the seat plate 120 by fitting engagement between the protrusion 141 of the 140 and the groove 153 of the rotating member 150 may be continuously performed by a predetermined appropriate force.

The greater the height of the protrusion 141 of the intermediate member 140 and the depth of the groove 153 of the rotating member 150, the more force is required to move the protrusion 141 out of the groove 153, and the smaller the protrusion 141. Relatively smaller force is needed to escape the groove 153. When viewed from the user side, it can be seen that the dynamics of the force required to rotate the seat plate 120 to secure or release the folding. By using such a relationship, the height of the protrusion 141 of the intermediate member 140 may be differentially adjusted according to the shape of the chair used, the environment, the use of the product, and the like.

On the other hand, at the inlet side of the mounting space 151 of the rotating member 150 is provided with a stepped portion 155 on which the flange 145 provided at the end of the intermediate member 140 is mounted so that the intermediate member 140 is more easily mounted. It is desirable to be mounted in the space 151.

Hereinafter, with reference to Figures 6 to 9 will be described in more detail the relationship between the operation of each of the components for the folding fixed by the seat plate rotation and its release. 6, as described briefly above, when the seat plate 120 is folded and the seat plate 120 is unfolded, the protrusion 141 of the intermediate member 140 is formed in the groove 153 of the rotating member 150. Based on the embodiment to be inserted.

6 is a cross-sectional view showing the operation relationship between the components of the present invention when the seat plate 120 is unfolded, that is, the seat plate 120 is lowered in order to be seated by the user, as shown in FIG. The groove 153 of the 150 is located in four places, and the protrusion 141 of the intermediate member 140 is located in two opposite directions.

The case where the seat plate is opened is assumed to be the start of the seat plate rotation. In this case, since the protrusion 141 of the intermediate member 140 is inserted into two opposing grooves 153 of the rotating member 150, the unfolded seat plate 120 can maintain its horizontal state unless a specific force is applied. Will be.

Next, as shown in FIG. 7, when a force greater than or equal to a threshold is applied to the seat plate 120 extending in the horizontal direction, the protrusion 141 inserted into the groove 153 may leave the groove 153 and the protrusion 141. ) Is pushed to the rear (circular center direction) while receiving elastic or physical support of the plate-like support 143 or the support protrusion 147. In this state, the seat plate 120 rotates clockwise.

When an external force in the clockwise direction is further applied and the seat plate 120 rotates to the folding position as shown in FIG. 8, the protrusion 141 and the plate support 143 pushed backward are restored by the elastic support force, so that the protrusion 141 is inserted or inserted into the groove portion 153 of the rotation member 150 again.

After the protrusion 141 is inserted into the groove 153, when a force greater than or equal to the threshold value is applied in the counterclockwise direction, the protrusion 141 leaves the groove 153 so that the state of FIG. 6 passes through the state of FIG. 7. You will be returned to.

The seat plate 120 folded by the operation principle can maintain the folded state unless a force of a specific size or more is applied, such that the seat plate 120 comes down again due to an unintended external impact or impact. The problem can be effectively overcome.

On the other hand, as shown in the figure the horizontal support bar 135 to escape from the rotational movement path of the seat plate 120, the rotating member so that the seat plate 120 can be effectively supported by the horizontal support bar 135 The lower surface of the 150 is more preferably provided with a seating groove 157 on which the horizontal support bar 135 is seated.

In the above description and drawings, the intermediate member 140 of the present invention has a convex outer circumferential surface (protrusion), and in the corresponding dimension, the inner circumferential surface of the mounting space 151 of the rotating member 150 has a concave shape. This is just a preferred embodiment of the present invention, in contrast to the illustrated embodiment, even if the intermediate member 140 has a concave outer circumferential surface and the inner circumferential surface of the mounting space 141 of the rotating member 150 has a convex shape. The principle of operation of the present invention can be implemented as it is.

Therefore, the intermediate member 140 of the present invention is provided with a concave or convex fitting portion that is elastically supported on the outer circumferential surface, and the rotating member 150 of the present invention corresponds to the fitting portion such that the fitting portion is supported by the elastic force (convex or Concave shape) and may have a mounting space 151 in which the intermediate member 140 is mounted.

The fitting portion of the intermediate member 140 corresponds to a configuration corresponding to the protrusion 141 itself supported by the elastic force or the protrusion 141 supported by the plate support 143 described above.

When the folding of the seat plate is fixed in this way, it is possible to easily store a plurality of the chair 100 of the present invention in the horizontal direction as shown in FIG. It is apparent that the distance between the front legs and the rear legs of the chair 100 is different from each other for the overlap between the chairs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

The accompanying drawings for the purpose of describing the present invention and the embodiments thereof may be shown in somewhat exaggerated form in order to emphasize or highlight the technical contents of the present invention. It should be understood that various forms of modification application may be possible at the level of ordinary skill in the art in consideration.

100: chair 110: body
120: seat 130: shaft
135: horizontal support bar 140: intermediate member
141: protrusion 142: through hole
143: plate support 144: spaced apart
145: flange 147: support protrusion
150: rotating member 151: mounting space
153: groove portion 155: stepped portion
157: seating groove

Claims (7)

A seat plate rotatably installed with respect to a shaft provided in the body;
An intermediate member inserted into and fixed to the shaft through a central hole, and having a concave or convex fitting portion that is elastically supported on an outer circumferential surface thereof; And
A rotating member having an inner circumferential surface corresponding to the fitting portion and having a mounting space for mounting the intermediate member so that the fitting portion is supported by the elastic force, and the intermediate member rotates together with the seat plate with respect to the shaft into which the intermediate member is inserted. Chair seat embodied folding seat fixing, characterized in that it comprises a. The method of claim 1,
Further comprising a horizontal support bar for supporting the seat plate,
The chair is implemented chair seat folding fastening device, characterized in that the shaft is formed extending from the horizontal support bar to the rear. The method of claim 2, wherein the fitting portion of the intermediate member,
Consists of an elastically supported protrusion,
The mounting space of the rotating member is a chair with a seat plate folding fixed device, characterized in that formed in the inner peripheral surface at least one groove portion is inserted into the projection of the intermediate member. The method of claim 3, wherein the intermediate member,
A central through-hole having a non-circular cross section to be fixed to the shaft; And
It is provided on the outer circumferential surface of the central hole, and further comprising an elastic support made of a plate shape to be elastically supported by the separation space,
The protruding portion of the chair is embodied seat plate folding device, characterized in that formed on the central portion of the elastic support. The method of claim 4, wherein the intermediate member,
The chair provided with a seat folding folding device is provided at a position corresponding to the protrusion in the separation space, further comprising a support protrusion for physically supporting the elastic force of the protrusion. The method of claim 3, wherein the protrusion of the fastening member,
When the seat plate is folded in the backrest direction or the seat plate is unfolded, the seat plate folding fixing device, characterized in that inserted into the groove of the rotating member. The method of claim 2, wherein the rotating member,
Chair seat folding fastening device is implemented, characterized in that the seating groove portion is formed on the lower surface when the seat plate is unfolded when the horizontal support bar is seated.

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