JP2023023337A - Foldable bonfire stand - Google Patents

Abstract

To provide a foldable bonfire stand that is excellent in portability, facilitated in assembling and has sufficient strength to be used outdoors.SOLUTION: A foldable bonfire stand 1 includes: a bottom part 5 formed such that two bottom plate members 2, 3 are connected so as to be rotatable about one edges of both members as an axis line 4; and side wall parts 6, 7 including an erecting mechanism that erects with rotating deployment of the bottom plate members in a side edge of the bottom part intersecting the axis line, thereby easily assembling or storing a hearth part 8.SELECTED DRAWING: Figure 1

Description

The present invention relates to a collapsible bonfire with a grate consisting of a bottom and side walls.

BACKGROUND ART In outdoor leisure activities such as camping, a bonfire stand is used as a tool for warming one's body and cooking. Usually, these tools are made of metal, and are heavy and large in size due to the need to have strength, and are therefore inconvenient to carry.

For this reason, as an easy-to-carry bonfire stand, a prefabricated bonfire stand assembled by combining four side plates and placing a bottom plate in the center (for example, Patent Document 1), or a support stand formed by combining frames. A foldable bonfire stand (for example, Patent Document 2) has been developed in which a fire bed is attached to the top of the bonfire.

However, even if these bonfire stands can be divided and stored in a small size, it is necessary to follow a set procedure and perform multiple operations when assembling or putting away the bonfire stand. It cannot be said that such work is necessarily easy.

Moreover, when the number of parts increases, there is a risk that some of the parts may be lost, and the bonfire stand may not be used repeatedly over a long period of time.

Therefore, it is desired to develop a foldable table that can be easily installed by anyone and that is easy to carry and store so that anyone can comfortably enjoy leisure activities outdoors.

JP 2011-75270 A JP 2012-167920 A

An object of the present invention is to provide a foldable bonfire stand that is easy to carry, easy to assemble, and has sufficient strength for outdoor use.

As a result of studies conducted by the present inventors in order to solve the above-mentioned problems, a bottom portion which is formed by connecting two bottom plate members so as to be rotatable about one edge of each other as an axis to be foldable, and the axis. The present inventors have found that the grate can be easily assembled or stored by providing a side wall portion provided with a standing mechanism that stands up as the bottom plate member rotates and expands on the side edge of the intersecting bottom portion. I have perfected my invention.

That is, the present invention provides a bottom portion formed by connecting two bottom plate members so as to be rotatable about one edge of each other about an axis, and a side edge of the bottom portion intersecting the axis, which is formed by rotating the bottom plate member. The foldable bonfire stand is characterized by providing a side wall portion having a standing mechanism for standing up together with a fire bed portion.

Further, according to the present invention, the lower edges of the side walls are attached to the inclined side edges of the two adjacent bottom plate members, which are formed by notching the side edges of the bottom portion intersecting the axis of rotation in a substantially V-shaped notch. are rotatably connected so that the side wall portion stands up as the bottom plate member rotates.

Further, the present invention is a foldable bonfire stand characterized in that the lower edges of the side walls are slidably connected along the inclined side edges of the bottom plate member.

Further, the present invention is a foldable bonfire stand characterized in that the side wall portion is formed by connecting two side wall plate members so as to be rotatable on the axis along which the bottom plate member rotates.

Further, the present invention is a foldable bonfire stand characterized by comprising rotation control means for rotating two side wall plate members within a predetermined angle range.

Further, the present invention is a foldable bonfire stand characterized in that a plate member is rotatably connected to the front edge and/or the rear edge of the bottom.

Further, according to the present invention, a plurality of leg members are provided on the lower surface of the bottom formed by rotating and unfolding the two bottom plate members, and two leg members are provided on the lower surface of the bottom at positions facing each other across the axis of rotation of the bottom plate members. a separation urging means for separating the two leg members from each other; and a movement connecting means for connecting the leg members to the bottom plate member so as to be movable from one edge side of the bottom plate member serving as the rotation axis to the opposite edge side. This foldable bonfire stand is characterized in that when the bottom plate member is rotated to unfold the bottom part, the leg members are unfolded to the left and right along the lower surface of the bottom part as the bottom plate member is rotated.

According to the foldable bonfire stand of the present invention, when the bottom plate member is rotated to unfold the bottom portion, the side wall portion rises as the bottom plate member rotates to form the fire bed portion, thereby facilitating the assembly of the bonfire stand. It can be carried out.

Further, by providing the separation urging means and the movement connecting means on the lower surface of the bottom and arranging the leg members, when the bottom plate member is rotated to expand the bottom, the leg members move to the lower surface of the bottom as the bottom plate member is rotated. Since it is deployed to the left and right along the , the bonfire stand can be assembled more easily.

On the other hand, when the bottom plate member is rotated to fold the bottom portion, the side wall portion falls down and is folded together with the two bottom plate members to be stored (accommodated). Further, since the leg members can be accommodated between the two bottom plate members, the bonfire stand can be easily carried.

External view of the foldable bonfire stand in an unfolded state ((a) top view, (b) front view, (c) bottom view, (d) side view) (drawing substitute photo) External view of the foldable bonfire stand in an unfolded state ((a) upper perspective view, (b) lower perspective view) (drawing substitute photo) Diagram showing the connection structure between the bottom and side walls of the foldable bonfire stand (photo as a substitute for drawing) Diagram showing the deployment or convergence operation of the folding bonfire ((a) converged state, (b) to (d) state during deployment or convergence, (e) deployed state) (photograph substituted for drawing) External view of the converged state of the folding bonfire stand ((a) plan view, (b) front view, (c) bottom view, (d) side view) (drawing substitute photo) Schematic diagram showing the underside of a foldable bonfire stand Diagrams showing the structure of the separation biasing means (first embodiment) ((a) assembled state, (b) disassembled state) Diagrams showing the structure of the separation biasing means (second embodiment) ((a) assembled state, (b) disassembled state) Schematic diagrams showing the operation of the separation biasing means ((a) state in which the leg members are extended, (b) state in which the leg members are slightly converged) Schematic diagrams showing the operation of deploying or converging leg members ((a) converged state, (b) to (d) states during deployment or convergence, (e) deployed state)

The foldable bonfire stand of the present invention will be described below with reference to the drawings. However, the present invention is not limited to those exemplified as embodiments for carrying out. In addition, the connection or attachment of constituent members in the present invention includes not only direct connection, etc., but also indirect connection, etc. via other members. Unless otherwise specified, all are included in this category as long as they maintain a substantially constant positional relationship.

As shown in FIG. 1, the foldable bonfire stand of the present invention has a bottom portion 5 which is formed to be foldable by connecting two bottom plate members 2 and 3 so that one edge of each bottom plate member 2 and 3 can rotate about an axis line 4. and a grate portion 8 provided with side walls 6 and 7 provided with a standing mechanism 9 that stands up as the bottom plate member rotates and expands on the side edge of the bottom portion that intersects with the axis.

FIG. 1 illustrates a bottom formed by connecting two bottom plate members and a fire bed formed by arranging side walls on the left and right sides of the bottom, but the side walls do not necessarily have two sides. Depending on the purpose and shape of the bonfire stand, it is possible to place it only on either the left or right side. Further, the number of bottom plate members is not limited to two, and three or more bottom plate members may be arranged, and the bottom portion may be formed by rotatably connecting the adjacent bottom plate members. In this case, a side wall portion having a standing mechanism may be provided at a position intersecting the axis of rotation for every two adjacent bottom plate members.

The erecting mechanism provided on the side wall is not particularly limited. part can be erected. Moreover, by using an elastic material for a part of the side wall, it is possible to make the bottom plate member stand up as it rotates.

The standing mechanism 9 can be formed by the shape of the bottom plate member, the shape of the side wall portion, and the connection means between the bottom plate member and the side wall portion, as shown in FIG. That is, the lower edges of the side walls are rotated to the inclined side edges of the two adjacent bottom plate members formed by notching the side edges of the bottom portion intersecting the axis of rotation in a substantially V-shape. By connecting them so that they can be connected, the side walls can be erected as the bottom plate member rotates.

FIG. 4 shows the operation of expanding or converging the folding bonfire stand. In the side wall portion 7 provided with the erecting mechanism 9 shown in FIG. When the state (c) where the two bottom plate members are unfolded and have reached a position forming an angle of 180 degrees is further rotated upward to the state (d), the side wall rises upward.

The connection between the bottom plate member and the side wall portion can be such that the lower edge of the side wall portion is slidably connected along the inclined side edge of the bottom plate member. As shown in FIG. 3, the lower edges of the side walls 7 are rotatably connected to the inclined side edges of the bottom plate members 2 and 3, and are slidably connected along the inclined side edges of the bottom plate members. By doing so, the rotation of the bottom plate member becomes smooth, and the side wall portion can be easily raised.

The side wall portion 7 can be formed by connecting two side wall plate members 10 and 11 so as to be rotatable on the axis 4 along which the bottom plate member rotates. According to such a side wall portion, in the folding type bonfire stand, as shown in FIG. It can be folded in two on the axis 4 to make it small and can be stored (Fig. 5). On the other hand, when the foldable bonfire stand is unfolded, it is possible to raise the side wall substantially vertically along the substantially dogleg-shaped notched bottom (Fig. 2).

The two side wall plate members to be connected can be provided with rotation control means for rotating within a predetermined angular range. As shown in FIG. 4, when the two bottom plate members are gradually rotated upward from the state (a) where the two bottom plate members are converged, the two side wall plate members and the bottom plate members also move toward the state (c) where the bottom plate members are unfolded 180 degrees. It rotates upward together with the member. When the bottom plate member is further rotated upward, the two side wall plate members do not rotate upward from the position of 180 degrees, and the side wall portion rises and the substantially dogleg-shaped notched bottom portion is opened. Rotate along the side edge. For this reason, since the two side wall plate members rotate differently from the rotation of the bottom plate member, if a rotation control means for rotating within a predetermined angle range is provided, the side wall plate members can be smoothly moved. , and the side wall can be easily raised. For example, the two side wall members may be provided with rotation control means for preventing further upward rotation after being deployed to 180 degrees.

The rotation control means is not particularly limited as long as it controls the rotation of the two side wall plate members within a predetermined angle range, and any means can be employed. A means (not shown) for limiting the notch width of the hinge that connects the two side wall members to a predetermined range and limiting the angular range of rotation, and a protrusion is provided near the point where the two side wall plate members are connected. , a means (not shown) for restricting the range of rotation with such a protrusion as an obstacle, etc., can be widely adopted. The angle range formed by the two rotating side wall plate members is preferably 0 to 170 degrees.

In addition, when two side wall plate members are connected by an elastic body such as a spring so as to rotate within a predetermined angle range, the side wall plate member receives the urging force of the elastic body and the bottom portion of the substantially dogleg-shaped notch is formed. It can be smoothly rotated along the side edge and raised (not shown).

In FIG. 4, the two adjacent bottom plate members are gradually rotated left and right from below, and from the state (c) in which the two bottom plate members reach an angle of 180 degrees, they are further rotated upward. (d) shows an aspect in which the side wall rises to form a grate. Even if the two bottom plate members are gradually rotated downward and expanded to the left and right, the form shown in FIG. not shown). In this case, when the bonfire stand is converged, the side wall portion is folded and accommodated between the two bottom plate members, or protrudes from the two bottom plate members in a form as shown in FIG. 5(b). becomes.

As shown in FIG. 1, plate members 12 and 13 can be rotatably connected to side edges of the bottom portion 5 substantially parallel to the axis 4 of rotation. After use, the folding bonfire stand is stored by rotating the bottom plate member (Fig. 4). will be exposed as the outer surface of the Therefore, when the plate members 12 and 13 are provided at the front edge and the rear edge of the bottom portion and stored, the bottom plate member is first rotated to cover the top surface of the bottom portion, and then the bottom plate member is closed. It is easy to carry without soiling the hands holding the bottom plate member. In addition, as shown in FIG. 2, such a plate material uses a foldable bonfire stand in a state of standing substantially vertically. In addition, if a net is placed on the upper edge of the plate, food can be cooked on it.

The plates are usually provided on the front and rear edges of the bottom, but depending on the size and shape of the bonfire, they may be attached to either the front or rear edge of the bottom.

As shown in FIG. 1, the folding bonfire stand 1 is provided with a plurality of leg members on the lower surface of a bottom portion 5 formed by rotating and unfolding two bottom plate members 2 and 3, and the bottom plate members 2 and 3 are A separation urging means 16 for separating the two leg members 14 and 15 on the bottom lower surface facing each other across the rotation axis 4, and opposite from one edge side of the bottom plate member serving as the rotation axis. Moving connection means 17 may also be provided for connecting the leg members to the bottom plate member so as to be movable towards the edge. A structure including such leg members, separation biasing means, and moving connecting means is also employed in the folding table disclosed in Japanese Patent No. 6141698. Although FIG. 1 shows an example of a bonfire stand with four leg members, it is not limited to this, and an appropriate number of leg members can be arranged depending on the size of the bottom portion 5 .

The separation biasing means 16 biases the two leg members 14 and 15 facing each other with respect to the axis 4 around which the bottom plate members 2 and 3 rotate, so as to separate them from each other. By connecting the leg members to the bottom plate member so as to be movable from one edge side of the bottom plate member serving as the movement axis 4 to the opposite edge side, when the bottom plate members 2 and 3 are rotated to unfold the bottom portion 5, the bottom plate members 2 and 3 are moved. The two urged leg members 14 and 15 are expanded left and right while moving the connecting position of the lower surface of the bottom part 5 along with the rotation of the folding type bonfire stand. Further, when the bottom plate members 2 and 3 are rotated to fold the bottom portion 5, the two leg members pressed from the left and right by the lower surfaces of the two bottom plate members converge toward the center while resisting the biasing force. It can be accommodated between the bottom plate members 2 and 3, and a foldable bonfire stand can be accommodated (FIGS. 10(a) to 10(e)).

The shape or material of the separation urging means 16 is not particularly limited as long as it has a function of urging the two leg members 14 and 15 to be spaced apart from each other and unfolded to the left and right. Therefore, as the separation urging means 16, for example, means for connecting the two leg members 14 and 15 with an elastic body and separating the two leg members from each other by the elastic force of the elastic body may be employed. Although it is possible, if a means such as connecting a part of two leg members made of an elastic body to each other and separating the two leg members from each other by the elastic force of the elastic body is adopted, the separation urging means can be used. can be integrally formed with the leg member, and the number of parts can be reduced. As a result, a foldable bonfire stand having excellent strength, light weight and excellent portability can be obtained.

As shown in FIG. 7, the separation urging means 16 bends both ends of a rod-like elastic body (for example, a metal rod having elasticity) forming the two leg members 14 and 15, and the lower end of one leg member 14 14b and the tip of the upper end extension 15c extending from the upper end 15a of the other leg member 15 are horizontally rotatably connected to each other; A second rotary connecting portion horizontally rotatably connecting the tip of the upper end extension 14c extending from the upper end 14a of the leg member 14 and the tip of the lower end extension 15d extending from the lower end 15b of the other leg member 15 19 can be spaced apart along the axis 4 about which the bottom plate members 2, 3 rotate (FIG. 6).

As shown in FIG. 7(b), a cylindrical pipe can be used for the first rotary connection portion 18 and the second rotary connection portion 19, and the openings at both ends of the first rotary connection portion 18 can be used. , the bent tip of the upper end extension portion 15c and the bent tip of the lower end extension portion 14d are inserted from the vertical direction, and the bent tip of the upper end extension portion 14c is inserted into the openings at both ends of the second rotary connection portion 19. By inserting the bent tip of the lower end extension 15d vertically, the upper end extension 15c and the lower end extension 14d, and the upper end extension 14c and the lower end extension 15d are rotated in the horizontal direction. can be linked together.

In such a separation urging means 16, as shown in FIG. 9, when the two leg members 14 and 15 approach each other, the first rotary connection portion 18 and the second rotary connection portion 19 approach each other, When the relative positions of the upper end extension and the lower end extension at both ends of the leg member change, an elastic force (repulsive force to return to the original position) is applied to the rod-shaped elastic body (for example, a metal rod having elasticity). ) is generated, and this elastic force enables the two leg members 14 and 15 to be separated from each other. Focusing on the leg member 14, the main elastic force (repulsive force) generated when the two leg members 14 and 15 approach each other is the upper end extending portion 14c and the lower end extending around the axial center of the leg member 14. It can be said that this occurs against the torsional motion given to the rod-like elastic body due to the relative rotation of the projecting portion 14d.

7, the tip of the lower end extension 14d extending from the lower end 14b of one leg member 14 and the tip of the upper end extension 15c extending from the upper end 15a of the other leg member 15 are horizontally rotatably connected. 14c extending from the upper end 14a of one of the leg members 14 and the tip of the lower extending portion 15d extending from the lower end 15b of the other leg member 15 are formed as the first rotary connecting portion 18. A second pivotal connecting portion 19 that is horizontally rotatably connected is exemplified, but as shown in FIG. , 15c are horizontally rotatably connected to each other to form a first rotatable connecting portion, and the tips of lower end extending portions 14d, 15d extending from the lower ends 14b, 15b of the two leg members 14, 15 are horizontally rotatably connected to each other. Even if they are movably connected to form a second pivotal connection, and the first pivotal connection and the second pivotal connection are arranged apart from each other along the axis 4 along which the bottom plate members 2 and 3 pivot, A resilient force can be provided to bias the leg members apart.

As shown in FIG. 6, the movable connecting means 17 is provided on the lower surface of the bottom plate members 2 and 3, extending from one edge side of the bottom plate member serving as the rotation axis 4 to the opposite edge side, and extending substantially perpendicular to the lower surface of the bottom portion 5. Guide members 21, 23 with through holes 20, 22 having open faces may be provided. By inserting the upper end extending portions 14c, 15c extending from the upper ends 14a, 15a of the leg members 14, 15 into the through holes 20, 22 of the guide members 21, 23, one edge side of the bottom plate member serving as the rotation axis 4 is inserted. It is possible to connect the leg member to the bottom plate member so as to be movable from the side to the opposite edge side.

The guide member connects the leg members so as to be movable along the lower surface of the bottom plate member by inserting the upper end extensions of the leg members into the through holes provided in the guide member. At least one is required for each member, but by inserting different portions of the upper end extension of the leg members through a plurality of through holes provided in the guide member, the movement direction of the upper end extension can be more reliably determined. can be regulated. In the guide member 21 shown in FIG. 6, a through hole 28 is provided in addition to the through hole 20. By inserting the upper end extending portion 14c of the leg member 14 through these through holes 20 and 28, the upper end extending portion 14c enables reliable horizontal deployment while following the lower surface of the bottom plate member.

By providing such a moving connection means 17, when the bottom plate members 2 and 3 are rotated to unfold the bottom portion 5, the two leg members 14 and 15 are urged along with the rotation of the bottom plate members 2 and 3. can be deployed to the left and right while moving the upper end extensions 14c and 15c passing through the through holes 20 and 22 of the guide members 21 and 23 to install a folding bonfire stand (FIGS. 10(a) to 10(e)). )). Further, when the bottom plate members 2 and 3 are rotated and the bottom portion 5 is folded, the two leg members 14 and 15 pressed from the left and right by the lower surfaces of the two bottom plate members resist the force of the separation biasing means 16. , the upper end extensions 14c, 15c move through the through holes 20, 22 and converge at the center, and are accommodated between the two bottom plate members 2, 3, so that the foldable bonfire stand can be folded into a small size. .

The two bottom plate members 2 and 3 are connected by attaching a connecting device such as a hinge, or a cylindrical portion is provided on each side portion of the two bottom plate members to be connected, and an axial core member is attached to the cylindrical portion. can be rotatably connected by inserting the guide members 21 and 23 to form a hinge structure. By rotatably connecting the adjacent opposing portions, the bottom portion 5 can be freely folded with the lower surfaces of the two bottom plate members facing each other.

If the guide members 21 and 23 installed on the bottom plate members 2 and 3 are used to rotatably connect the two bottom plate members in this way, the number of parts can be reduced, resulting in excellent strength and light weight. By doing so, the portability can be improved.

Side walls 24, 25, 26, and 27 are provided on the lower surfaces of the bottom plate members 2 and 3 along the edges opposite to the one edge serving as the axis 4 of the rotating bottom plate members. It is possible to form a shallow recess with a Forming the shallow concave portion 29 in the lower surface of the bottom plate member in this way improves the strength of the bottom plate member, so that the weight of the bottom plate member can be reduced by making the bottom plate member thinner, and a table excellent in portability can be obtained (Fig. 2). .

In addition, side walls 25 and 27 are provided on the lower surfaces of the bottom plate members 2 and 3 along the edges opposite to the rotation axis 4, so that the two bottom plate members 2 and 3 are rotated to fold the bottom. , the leg members 14, 15, the separation urging means 16, and the movable connecting means 17 can be accommodated in the space surrounded by the two bottom plate members 2, 3 and the side walls 25, 27, and the bonfire is easy to carry. become a platform.

1 Foldable bonfire stand 2 Bottom plate member 3 Bottom plate member 4 Axis line 5 Bottom portion 6 Side wall portion 7 Side wall portion 8 Fire floor portion 9 Standing mechanism 10 Side wall plate member 11 Side wall plate member 12 Plate material 13 Plate material 14 Leg member 14a Upper end 14b Lower end 14c Upper end extension Protruding portion 14d Lower end extension 15 Leg member 15a Upper end 15b Lower end 15c Upper end extension 15d Lower end extension 16 Separation urging means 17 Moving connection means 18 First rotation connection 19 Second rotation connection 20 Through hole 21 Guide member 22 Through hole 23 Guide member 24 Side wall 25 Side wall 26 Side wall 27 Side wall 28 Through hole 29 Recess F Elastic force (repulsive force)

Claims (7)

A bottom portion formed by connecting two bottom plate members so as to be rotatable about one edge of each other as an axis, and an erecting mechanism that stands on a side edge of the bottom portion that intersects with the axis line as the bottom plate member rotates and expands. and a fire bed portion. The lower edges of the side walls are rotatable on the inclined side edges of the two adjacent bottom plate members formed by notching the side edges of the bottom portion intersecting the axis of rotation in a substantially dogleg shape. 2. The foldable bonfire stand according to claim 1, wherein the side walls are erected as the bottom plate member is rotated by connecting them. 3. The foldable bonfire stand according to claim 2, wherein the lower edges of the side walls are slidably connected along the inclined side edges of the bottom plate member. 4. The foldable bonfire stand according to claim 2 or 3, wherein the side wall portion is formed by connecting two side wall plate members so as to be rotatable on an axis along which the bottom plate member rotates. 5. The foldable bonfire stand according to claim 4, wherein the two side wall plate members are provided with rotation control means for rotating within a predetermined angular range. 6. The foldable bonfire stand according to any one of claims 1 to 5, characterized in that a plate member is rotatably connected to a side edge of the bottom portion substantially parallel to the axis of rotation. A plurality of leg members are provided on the lower surface of the bottom formed by rotating and unfolding the two bottom plate members, and the two leg members on the lower surface of the bottom at positions opposed to each other across the axis of rotation of the bottom plate members are mutually connected. and a moving connecting means for connecting the leg member to the bottom plate member so as to be movable from one edge side of the bottom plate member serving as the axis of rotation to the opposite edge side of the bottom plate member. 7. The foldable bonfire according to any one of claims 1 to 6, wherein when the member is rotated to deploy the bottom, the leg members are deployed laterally along the lower surface of the bottom as the bottom plate member rotates. stand.

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