JP2002223885A - Mechanism of stopper for folding frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism of stopper for a folding frame, which is placed at a mounting part for a folding frame formed into a pipe shape, prevents the mounting part from rotating improperly, and keeps its dimensions small when storing the folding frame. SOLUTION: The mechanism of stopper is to prevent a mounting part for folding frame 11, 22 each formed into pipe shapes from rotating improperly and is equipped with a stopper 2 which is placed between the frame 11 and the other frame 22 and is made of an elastic material. The stopper 2 has a dented part at a place where the stopper 2 makes contact with either the frame 11 or the frame 22 when the both frames are either in an extended state or in a folded state. The stopper 2 has a protruded part at a place other than the part where the stopper 2 makes contact with the frames.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on a shaft-mounting portion of a frame member which is formed in a pipe shape and is foldable, and can prevent the shaft-mounting portion from being rotated carelessly. The present invention relates to a stopper mechanism for a folding frame.

[0002]

2. Description of the Related Art Conventionally, some so-called "outdoor products" such as folding chairs, beds, tables and tents used for camping and the like are manufactured using a pipe-shaped frame member. There are many. By configuring the outdoor article with the pipe-shaped frame member as described above, the weight of the outdoor article can be reduced.

[0003] Further, among outdoor products utilizing a pipe-shaped frame member, there are some outdoor products in which the frame member is foldable. By making the frame member foldable as described above, the outdoor article can be made compact when not in use.

As described above, by reducing the weight or size of the outdoor article, it is possible to prevent the operation of transporting the outdoor article from becoming complicated.

[0005]

However, if the frame member is made foldable, it can be used in a state of use,
In the folded state, the shaft attachment part rotates carelessly,
There is a problem that the user is hurt.

For example, when the end 200a of the foldable bed 200 is held as shown in FIG. 10, the leg frame member 201 is folded without permission and the user 400
Was pinched.

As another specific example, as shown in FIG. 11, when the bed 200 is lifted and moved in a half-standing state from a sitting state, the leg frame 201 rotates carelessly. If the user sits unnoticed, the user 400's finger or the like is pinched between the leg frame member 201 and the base frame member 202.

In order to solve these problems, various inventions or ideas have been made. For example, as shown in FIG. 12, there are mounting stay members 304, 304 for pivotally attaching the leg frame member 302 to the base frame member 303, in which pot members 304a, 304a facing each other are formed. However, in the stopper mechanism 300 shown in FIG. 12, since the leg frame member 302 and the base frame member 303 are on the same straight line, the bed 300
When the is folded, the leg frame member 302 hits another leg frame member 305 as shown in FIG.
There is a problem that the storage size becomes large.

The present invention has been devised to solve the problem. The present invention is provided on a shaft-mounting portion of a frame member which is formed in a pipe shape and is foldable, and prevents the shaft-mounting portion from being rotated carelessly. It is an object of the present invention to provide a folding frame stopper mechanism that can prevent the storage size from becoming large while preventing the storage size from increasing.

[0010]

In order to achieve this object, a stopper mechanism for a folding frame according to the first aspect of the present invention provides a stopper mechanism for a folding frame member which is formed in a pipe shape and which is rotated inadvertently. And a stopper member made of an elastic material and disposed between one frame member and another frame member.The stopper member includes the one frame member or A concave portion is formed at a contact portion of at least one of a deployed position and a folded position of the two frame members on a contact surface with one of the other frame members, and a convex portion other than the contact portion. Are formed.

According to a second aspect of the present invention, there is provided a stopper mechanism for a folding frame according to the first aspect, wherein the stopper member has a notch formed between a contact surface on one side and a contact surface on the other side. Is formed, and the position where the notch portion of the stopper member is formed and the position where the convex portion is formed overlap each other in the axial direction in which the two frame members are attached.

According to a third aspect of the present invention, there is provided a stopper mechanism for a folding frame according to the first or second aspect, wherein both frame members are constituent members of a folding chair or a folding bed. Is disposed between a base frame member for stretching a sheet member for supporting a part or the whole of a human body, and a leg frame member for supporting the base frame member.

According to a fourth aspect of the present invention, in the stopper mechanism for a folding frame according to the third aspect, the base frame member is formed in a substantially U-shape, and the leg frame member is connected to the base frame. It is arranged inside the member.

According to a fifth aspect of the present invention, in the stopper mechanism for a folding frame according to the fourth aspect, the concave portion of the stopper member is formed at a contact portion at a deployed position of the leg frame member.

According to a sixth aspect of the present invention, in the stopper mechanism for a folding frame according to the fifth aspect, the leg frame member is attached to an end of a folding chair or a folding bed.

According to the stopper mechanism for a folding frame of the present invention, a stopper (bracket) made of an elastic material is provided between one frame member and another frame member rotatably mounted on the one frame member. A member is provided, and the stopper member has an uneven portion on a contact surface with either one of the one frame member and the other frame member. A concave portion is formed at a contact portion at one of a deployed position and a folded position of the frame member among the concave and convex portions formed on the stopper member, and a convex portion is formed at a position other than the contact portion. I have. For this reason, one frame member and another frame member are held at either the deployed position or the folded position. Further, since the stopper member is made of an elastic material, the frame member is rotated (deployed or
At the time of folding), it is possible to prevent the rotation operation from being complicated.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The present invention relates to a stopper mechanism for a folding frame that is provided on a shaft attachment portion of a frame member that is formed in a pipe shape and that can be folded, and that can prevent the shaft attachment portion from rotating carelessly. The stopper mechanism according to the present invention can be applied to any stopper mechanism having a pipe-shaped folding frame member. Specific examples include a folding chair, a folding bed, a folding table, and a folding tent.

In this embodiment, in order to facilitate understanding of the present invention, as shown in FIG. 1, a foldable bed having a stopper mechanism 1 according to one embodiment of the present invention (hereinafter simply referred to as a "bed"). ) Is described. FIG. 1 is an external perspective view of a bed 100 having a stopper mechanism 1 according to one embodiment of the present invention. The bed 100 includes a base frame member 10, a leg frame member 20, a seat member 30, and a pillow member 40.

The base frame member 10 constitutes the skeleton of the bed 100 and is formed in a pipe shape. The basic frame member 10 includes a foot-side basic frame member 11, a head-side basic frame member 12, and a body-side basic frame member 13.
Of the legs 1, 12, and 13, the foot-side basic frame member 11 and the trunk-side basic frame member 13 are rotatably mounted on the shaft, and the head-side basic frame member 12 and the trunk-side basic frame member 13 rotate. It is attached to the shaft as much as possible. Therefore, the base frame member 10 can fold and unfold the foot-side base frame member 11, the torso-side base frame member 13, the head-side base frame member 12, and the torso-side base frame member 13, respectively. FIG. 1 shows a state where each of the frame members 11, 12, and 13 is expanded.

The foot base frame member 11 is
0 is a frame member disposed on the foot side (foot side of a person lying on the foldable bed), and is formed in a substantially U-shape. The head-side basic frame member 12 is a frame member disposed on the head side of the bed 100, and is formed in a substantially U-shape similarly to the foot-side basic frame member 11. The torso-side basic frame members 13, 13 are the foot-side basic frame members 1.
1 and is disposed between the head-side basic frame member 12 and is formed substantially linearly.

The leg frame member 20 supports the base frame member 10 and includes an intermediate leg frame member 21.
And an end leg frame member 22. The intermediate leg frame member 21 is in the vicinity of the connection between the foot-side basic frame member 11 and the trunk-side basic frame member 13 (including the connection itself. The same applies hereinafter), and the head-side basic frame member 1.
2 and near the connecting portion between the body-side basic frame member 13. The end leg frame member 22 is provided at an end of the foot-side base frame member 11, and is formed in a substantially U-shape.

FIG. 2 is an external perspective view of the vicinity of a connection portion (arranged portion of the stopper mechanism 1) between the foot-side basic frame member 11 and the end leg frame member 22, and FIG. 3 is a perspective view of the connection portion. It is a top view of only one. As shown in FIG. 2, the foot-side basic frame member 11 and the end leg frame member 22 are rotatably mounted on a shaft member 50. As shown in FIG. The stopper member 2 is disposed between the end member 22 and the end leg frame member 22.

FIG. 4 is an upper perspective view of only the stopper member 2, and FIG. 5 is a side view of the stopper member 2.
FIG. 6A is a view showing a state in which the foot-side basic frame member 11 and the end leg frame member 22 are folded, and FIG. 6B is a view showing the foot-side basic frame member 11 and the end leg frame. FIG. 8 is a view showing a state where the member 22 is expanded, and FIG.
8 is a cross-sectional view taken along the line VII-VII in FIG. 3, FIG. 8 is a view showing a state in which the end leg frame member 11 is being developed, and FIG. 9 is a view showing the end leg frame shown in FIG. 7. FIG. 9 is a diagram illustrating a state in which a member 22 is being developed (folded). FIG. 10 is a diagram illustrating a state where the bed 100 is folded.

The stopper (bracket) member 2 shown in FIGS. 3 and 4 is made of a rubber material. The stopper member 2 has an uneven surface 2a, a curved surface 2b, and a notch 2c. Have been. The uneven surface 2a is a surface that comes into contact with (contacts with) the end leg frame member 22, and the concave surface 2a
1 and a convex portion 2a2. As shown in FIGS. 5A and 5B, the end leg frame member 22 can be folded or unfolded, but the concave portion 2a
Numeral 1 is formed at a contact portion with the end leg frame member 22 at the position where the end leg frame member 22 is folded and unfolded, and the convex surface portion 2a2 is formed at a portion other than the contact portion. Explaining a little more clearly, the convex surface portion 2a2 is a predetermined angle θ of the concave and convex surface 2a.
The concave portion 2a1 is formed in the other portion (360-θ). Therefore,
As shown in FIG. 7, the end leg frame 22 can be held in the deployed position and the folded position.
Even if the bed 100 is lifted as in the case shown in FIG. 11 or the bed 100 is moved from a sitting state to a half-standing state as in the case shown in FIG. 12, the end leg frame member 22 is careless. To prevent the user's finger or the like from being caught between the foot-side basic frame member 11 and the end leg frame member 22.

Further, since the stopper member 2 is made of a rubber material, that is, an elastic material, the end leg frame member 22 can be held in the developed position and the folded position, but without applying any force. However, the end leg frame member 22 can be expanded and folded with only a small amount of force. Note that the stopper member 2 is not necessarily limited to a member made of a rubber material. For example, another elastic material (elastic body) such as a sponge material is used.
May be used. Stopper member 2
May not be entirely made of an elastic material. For example, a resin material may be provided at an end portion and an elastic material may be provided at an intermediate portion.

The curved surface 2b is connected to the foot-side basic frame member 11
The stopper member 2 is adapted to fit with the foot-side basic frame member 11 via the curved surface 2b. Here, as described above, the foot-side basic frame member 11 and the end leg frame member 22 are rotatably mounted on the shaft member 50, and the stopper member 2 is And the end leg frame member 22. Therefore, even when the end leg frame member 22 is expanded or folded, it is possible to prevent the stopper member 2 itself from rotating along with the rotation.

The notch 2c is formed in the middle of the stopper member 2 (between the concave and convex surface 2a and the curved surface 2b), and the position of the convex portion 2a2 and the notch Are formed at positions where the positions overlap. Therefore, when the end leg frame member 11 is unfolded from the folded position as shown in FIG. 8 or when the end leg frame member 11 is folded from the unfolded position, the rotating end leg frame member 11 is Convex portion 2a displaced by
2 can be absorbed. In turn,
It is possible to prevent the protruding surface portion 2a2 from being scraped or frayed by the end leg frame member 11.

Since the stopper member 2 is disposed between the foot base frame member 11 and the end leg frame member 22, the end leg frame member 22 is disposed inside the foot base frame member 11. It can be set up. Therefore, even when the bed 100 is folded as shown in FIG. 10, it is possible to prevent the storage size from becoming larger than that of the conventional bed 300 shown in FIG. Also, since the foot-side basic frame member 11 is formed in a substantially U-shape, the end leg frame member 22
When the is deployed, the foot-side base frame member 11 serves as a regulating member, and prevents a large force from being applied to the stopper member 2 even when a person lays down or sits on the bed 100, and This can prevent the durability of the stopper member 2 from being impaired.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. Can be easily inferred.

For example, according to the present embodiment, the notch 2c is formed in the middle of the stopper member 2, and the notch 2c causes the convex surface pushed by the rotating end leg frame 11. The volume of the portion 2a2 can be absorbed. However, it is needless to say that the notch 2 does not necessarily have to be provided, and may not be provided.

According to the present embodiment, the notch 2c
Are hollow. However, the notch 2c
Then, as shown in FIG. 11, a filling 2d made of a highly elastic sponge material or cotton material may be fitted. By inserting the filling 2d into the notch 2c in this way, it is possible to prevent dust and dirt from entering the notch 2c. Therefore, it is possible to prevent the provision of the notch 2c from becoming meaningless.

Further, according to the present embodiment, the stopper member 2 is formed with the curved surface 2b on the side contacting the foot-side base frame member 11, and the uneven surface on the side contacting the end leg frame member 22. The surface 2a is formed. However,
Uneven surface 2a is provided on the surface that comes into contact with foot-side base frame member 11.
May be formed, and the curved surface 2b may be formed on the surface that comes into contact with the end leg frame member 22.

Further, according to the present embodiment, the stopper member 2 is formed with one convex portion 2a2 and one notch portion 2b. However, of course, these formation locations are not limited to one location and may be multiple locations.

Further, according to the present embodiment, of the uneven surface 2a formed on the stopper member 2, the convex surface 2a2 is formed at a predetermined angle θ. However, the angle θ may be changeable. With such a configuration, the angle at which the stopper works can be changed.

[0035]

According to the stopper mechanism of the folding frame according to the first aspect of the present invention, the stopper member is provided between the foldable frame members. A concave portion is formed at a contact portion at at least one of the expanded position and the folded position, and a convex portion is formed at a portion other than the contact portion, so that one frame member and another frame member, There is an effect that it can be held at either the unfolded position or the folded position. As a result, there is an effect that it is possible to prevent the shaft attachment portion from being inadvertently rotated and damaging the user.

Further, since the stopper member is made of an elastic material, it is possible to hold the frame member. However, when the frame member is rotated (deployed or folded), the holding member is released. There is also an effect that complication can be prevented.

According to the stopper mechanism of the folding frame according to the second aspect, in addition to the effect of the stopper mechanism of the folding frame according to the first aspect, the stopper member further includes a contact surface on one side and a contact surface on the other side. The notch is formed between the notch and the position where the notch is formed and the position where the protrusion is formed are positioned so as to overlap in the mounting axis direction of the frame member. When rotating from the position or the folded position, there is an effect that the volume of the convex portion of the stopper member displaced by the frame member can be absorbed. As a result, there is an effect that it is possible to prevent the rotation work of the frame member from being hindered, and there is also an effect that it is possible to prevent the protrusion from being cut by the frame member.

According to the stopper mechanism of the folding frame according to the third aspect, in addition to the effect of the stopper mechanism of the folding frame according to the first or second aspect, furthermore, both frame members are formed of a folding chair or a folding bed. Since the stopper member is provided between the base frame member and the leg frame member which are the constituent members, it is possible to prevent the base frame member and the leg frame member from rotating carelessly. There is an effect that it can be prevented.

According to the stopper mechanism of the folding frame according to the fourth aspect, in addition to the effect of the stopper mechanism of the folding frame according to the third aspect, the base frame member is formed in a substantially U-shape. Since the frame member is disposed inside the base frame member, the base frame member and the leg frame member can be prevented from being inadvertently expanded or folded. There is an effect that it is possible to prevent an increase in the storage space of the chair or the bed in the state.

According to the stopper mechanism of the folding frame according to the fifth aspect, in addition to the effect of the stopper mechanism of the folding frame according to the fourth aspect, furthermore, the concave portion of the stopper member is provided at the contact portion at the deployed position of the leg frame member. The leg frame member is inadvertently folded even when the base frame member is lifted in order to move or clear the folding chair and the folding bed because it is formed, and the user is hurt. There is an effect that it is possible to prevent that.

According to the stopper mechanism of the folding frame according to the sixth aspect, in addition to the effect of the stopper mechanism of the folding frame according to the fifth aspect, the leg frame member is further provided at the end of the folding chair or the folding bed. Because it is attached, even when the base frame member is lifted to move or clear the foldable chair and foldable bed, the leg frame member is folded carelessly, There is an effect that damage can be prevented. In particular, even when the leg frame is lifted and moved in a half-standing state from a state where the folding chair or the folding bed is seated, it is possible to prevent the user from being hurt.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a foldable bed (bed) having a stopper mechanism according to an embodiment of the present invention.

FIG. 2 is an external perspective view of the vicinity of a connection portion between a foot-side basic frame member and an end leg frame member that constitute the bed.

FIG. 3 is a plan view of only one of the connection portions.

FIG. 4 is a sectional perspective view of only a stopper member.

FIG. 5 is a side view of only a stopper member.

FIG. 6A is a view showing a state in which a foot-side basic frame member and an end leg frame member are folded, and FIG.
FIG. 4 is a view showing a state where a foot-side basic frame member and an end leg frame member are developed.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 3;

FIG. 8 is a diagram showing a state where the end leg frame member is deployed from a folded position.

FIG. 9 is a view showing a state in which the end leg frame member shown in FIG. 7 is being developed (folded).

FIG. 10 is a view showing a state where the bed is folded.

FIG. 11 is a side view of a stopper member according to a modification of the embodiment.

FIG. 12 is a diagram showing a state where a bed having no stopper mechanism according to the related art is lifted.

FIG. 13 is a view showing a state in which a bed having no stopper mechanism is moved.

14A is a side view of a conventional stopper mechanism, and FIG. 14B is a cross-sectional view of the conventional stopper mechanism.

FIG. 15 is a view showing a state in which a bed having a stopper mechanism according to the related art is folded.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Stopper mechanism 2 Stopper member 2a Uneven surface (one side contact surface or the other side contact surface) 2a1 Concave surface part 2a2 Convex part 2c Notch part 11 Foot base frame member 22 End leg frame member 30 Sheet member 100 Rollaway bed

Claims (6)

[Claims] 1. A stopper mechanism for a folding frame for preventing a pivotal attachment portion of a frame member formed in a pipe shape and being foldable from inadvertently rotating, wherein one frame member and another frame member are provided. And a stopper member made of an elastic material disposed between the two frame members. The stopper member has the two frame members on a contact surface with one of the one frame member and the other frame member. A stopper mechanism for a folding frame, wherein a concave portion is formed at a contact portion at at least one of an expanded position and a folded position, and a convex portion is formed at a position other than the contact portion. 2. The stopper member has a notch formed between a contact surface on one side and a contact surface on the other side, and the stopper member has a notch in an axial direction in which both frame members are attached. 2. The stopper mechanism for a folding frame according to claim 1, wherein a position where the notch is formed and a position where the projection is formed overlap each other. 3. The two frame members are constituent members of a foldable chair or a foldable bed, and the stopper member is a base frame member for stretching a sheet member that supports a part or the whole of a human body; The stopper mechanism for a folding frame according to claim 1, wherein the stopper mechanism is provided between a leg frame member that supports the base frame member. 4. The folding frame according to claim 3, wherein the base frame member is formed in a substantially U-shape, and the leg frame member is disposed inside the base frame member. Stopper mechanism. 5. The stopper mechanism according to claim 4, wherein the concave portion of the stopper member is formed at a contact portion of the leg frame member at a deployed position. 6. The stopper mechanism for a folding frame according to claim 5, wherein the leg frame member is attached to an end of the folding chair or the folding bed.