KR102158067B1 - Bench folding device for picnic tables - Google Patents

Abstract

The present invention relates to a bench folding device for a picnic table, which can simplify the structure and improve operational reliability and stability. To this end, a fixing member (22), functioning as a hinge which connects a bench (14) in a foldable manner to a bottom frame (12) of a picnic table (10), and having a stopper (30) with a lower inclined surface (32) and an upper inclined surface (34) connected by a curved surface unit (36), is mounted on the end portion of the bottom frame (12). A driving member (24) has the lower end portion provided with a latching projection (40) bent to correspond to the stopper (30), and the upper end portion mounted by a bolt (42) and a nut (40) constituting a rotary shaft in a rotatable manner toward a column (16) of the bench (14) to be eccentric to the stopper (30). Therefore, the latching projection (40) of the driving member (24) comes in contact with the gap between the lower inclined surface (32) and the curved surface unit (36) of the stopper (30) to maintain the locked state. By the ascension and descension of the driving member (24), the latching projection (40) overruns the curved surface unit (36) and the upper inclined surface (34) to fold the bench (14). Consequently, the present invention can be conveniently used, and provide excellent operational reliability and safety.

Description

Bench folding device for picnic tables {Bench folding device for picnic tables}

The present invention relates to a bench folding device for a picnic table, and more specifically, in a picnic table in which a wooden table and a bench are integrally connected with a metal frame, the bench is kept erected to the outside of the table or the bench is laid under the table. It relates to a bench folding device for a picnic table that makes giving easier, safer and more sturdy.

In general, picnic tables in which a table and a bench are integrally connected are mainly used outdoors, and since the picnic table has a large weight and volume, and the occupied space cannot be increased, the bench is placed under the table when not in use. It is desirable to fold it.

However, in the conventional bench-integrated table disclosed in Korean Registered Patent Publication No. 10-1,973,615, the upper plate and the bench are formed of a composite panel filled with an inorganic flame-retardant resin layer between the upper and lower aluminum layers, and a metal frame supporting them. The structure was formed with a metal connecting rod connecting the supporting legs before and after, so that the safety against fire could be improved, but there was a problem that the bench could not be folded under the table when not in use.

In addition, the leg upright unlocking structure of the leg folding table disclosed in Korean Utility Model Publication No. 20-0163863, or the leg standing of the leg folding table disclosed in Korean Utility Model Publication No. 20-0163862. The state unlocking structure is to securely fix the legs installed in an upright state to be folded with a hinge on the frame installed at the base of the table's top plate, so it cannot be applied to a picnic table in which the table and the bench are integrally connected.

In addition, the bench folding device for a picnic table disclosed in U.S. Patent Publication No. 2004/0227382 can fold the table and the bench on the same plane, and in the unfolded state, the bench can be moved horizontally to the bottom of the table. The structure of the frame that connects the table and the bench is very complicated, and because it is composed of prefabricated components, there are problems such as frequent failures during use, and low durability and operational reliability. It was not applicable to a picnic table connected as an integral part.

The inventors of the present application have studied carefully in order to solve the problems of the prior art as described above, and as a result of the fact that the floor frame of the picnic table and the pillar of the bench are connected by a hinge, the bench is firmly erected with only more simplified components. It has been found that it can be maintained or the bench can be laid under the table, and the present invention has been completed.

In order to achieve the above-described problems, the present invention is provided with a fixing member on the floor frame that also serves as a hinge for folding the bench from the floor frame of the picnic table, and a movable member corresponding to the fixing member on the pillar of the bench. It aims to simplify the structure and provide a bench folding device for a picnic table that can be used more conveniently and safely with excellent operation reliability.

In order to achieve the object as described above, the present invention is a bench folding device for a picnic table to erect or fold the pillar 16 of the bench 14 separated from the floor frame 12 of the picnic table 10, A pivot 20 having a helical part 18 is fixed to one side of the lower end of the column 16, and the assembly guide hole 26 and the isosceles through which the helical part 18 passes and the nut 28 is fastened. A stopper 30 having a triangular pyramid shape is provided, and a fixing member 22 serving as a hinge mounted on the end of the bottom frame 12, and a bent locking protrusion 40 corresponding to the stopper 30 are at the lower end. It is formed in the stopper 30 and eccentrically with the movable member 24 mounted with a bolt 42 and a nut 44 whose upper end forms a rotation axis so as to be rotatable on the column 16 side of the bench 14. It is characterized by being.

In addition, in the present invention, the stopper 30 of the fixing member 22 is connected to the lower slope 32 and the upper slope 34 by a curved portion 36, so that the locking projection 40 of the movable member 24 It is characterized in that the lower slope 32, the curved surface 36 and the upper slope 34 of the stopper 30 are overrun so that the bench 14 can be locked or released in an erect state to be folded. do.

In addition, in the present invention, the distance (L1) between the bolt 42 forming the rotation axis of the movable member 24 and the front end 46 of the locking projection 40 is the bolt 42 and the locking projection 40 ) Is formed longer than the distance (L2) with the rear end 48 of the movable member 24 so that the locking protrusion 40 of the movable member 24 is at a lower slope 32 of the stopper 30 ) And the curved portion 36 and in line contact.

In addition, the present invention is characterized in that the lower end of the movable member 24 is formed with a hole 52 to which the operating means 50 made of either a wire rope or a steel bar is connected.

In addition, the present invention is characterized in that the fixing member 22 and the movable member 24 are formed of a plurality of fixing members 220 and a plurality of movable members 240, respectively.

In the present invention, in a state in which the locking jaw of the movable member is in line contact between the lower slope of the stopper of the fixing member and the curved portion, the locking jaw of the movable member is fixed when the movable member is lightly lifted and released while maintaining the locked state of the bench. Because it is possible to fold the bench to the bottom of the bench table by overrunning the curved surface and the upper slope of the stopper, the structure can be simplified and produced more economically than in the prior art, and it can be used more conveniently. There are advantages such as operational reliability, durability, and safety.

In addition, in the present invention, the locking jaw of the movable member and the stopper of the fixing member are in line contact, so even if a clearance occurs due to an allowable assembly tolerance, the locked state of the bench is maintained very accurately and firmly, as well as the locking state is released. The delivery and conversion of the bench to the original locking state after being folded are made by the self-weight of the movable member, so it is very easy to use and there is no fear of failure, thus greatly extending the service life.

In addition, the present invention has the advantage that the bench is obliquely folded to the bottom of the bench table, so that space utilization is very excellent, and the seat and backrest can be more effectively prevented from being contaminated with various foreign substances such as rainwater or dust.

In addition, the present invention has the advantage that the bench is folded obliquely to the bottom of the bench table, so that the cover can be installed more stably in rainy weather, and the fear of damage in the logistics process such as transportation can be greatly reduced.

1 is a side view of a picnic table illustrating a state in which a bench is erected and a state in which the bench is laid down by a bench folding device according to the present invention.
Figure 2 is an exploded perspective view showing an embodiment of the bench folding apparatus according to the present invention.
Figure 3 is a side view showing an assembled state of the bench folding device according to the present invention.
Figure 4 is a side view showing a state in which the locking state is released by lifting the movable member of the bench folding device according to the present invention.
Figure 5 is a side view showing a state in which the bench column is folded by the bench folding device according to the present invention.
Figure 6 is a view illustrating the operation of a state in which the locking jaw of the movable member maintains the bench in an upright state while overrunning the stopper of the fixing member or folds the bench in the bench folding apparatus according to the present invention.
Figure 7 is an exploded perspective view showing another embodiment of the bench folding device according to the present invention.

The present invention will be described in more detail with reference to exemplary drawings as follows.

The bench folding device for a picnic table according to the present invention has a spiral portion 18 at the lower end of the column 16 of the bench 14 separated from the floor frame 12 of the picnic table 10 as illustrated in FIGS. 1 to 5. ) Is fixed, the bottom frame 12 is equipped with a fixing member 22 serving as a hinge, and the fixing member 22 and the column 16 of the bench 14 A corresponding movable member 24 is mounted. One side of the fixing member 22 has an assembly guide hole 26 through which the spiral portion 18 of the pivot 20 passes, and the spiral portion 18 exposed outside the assembly guide hole 26 is formed. ) Is fastened with a nut 28 so that the column 16 of the bench 14 is assembled so as to be rotatable under the picnic table 10 with the pivot 20 as a central axis. A stopper 30 having an isosceles triangular pyramid shape is formed on the other side of the fixing member 22. The stopper 30 has a shape in which the lower inclined surface 32 and the upper inclined surface 34 are connected by a curved portion 36.

An assembly guide hole 38 connected to the pillar 16 of the bench 14 is formed at the upper end of the movable member 24, and the lower end is mounted on the floor frame 12 of the picnic table 10. A bent locking protrusion 40 corresponding to the stopper 30 of the fixing member 22 is formed.

The upper end of the movable member 24 is eccentric with the stopper 30 of the fixing member 22 at the column 16 of the bench 14, that is, a bolt 42 and a nut on the front side of the stopper 30. Since it is fixed to be rotatable by 44, the locking protrusion 40 provided at the lower end by the self-weight of the movable member 24 is in contact with the lower inclined surface 32 of the stopper 30. In particular, as illustrated in FIG. 3, the distance L1 between the bolt 42 serving as a pivot in the movable member 24 and the front end 46 of the locking protrusion 40 is the bolt 42 And the distance L2 between the rear end 48 of the locking protrusion 40 and the movable member 24 is shown by a solid line in FIG. 4 and lifted up as well as shown in FIG. In the unsupported state, that is, in the locked state, the locking projection 40 of the movable member 24 is in line contact with the lower inclined surface 32 and the curved surface 36 of the stopper 30. Accordingly, as shown in FIG. 3, the column 16 of the bench 14 is maintained in an erected state. A hole 52 is formed at the lower end of the movable member 24 to which the operating means 50, which can be made of either a wire rope or a steel rod, is connected, so that the operation is movable by the operating glass 50 connected to the hole 52. The member 24 is lifted as represented by a solid line in FIG. 4 to release the locked state of the stopper 30 and the locking protrusion 40, so that the column 16 of the bench 14 is represented by a double-dashed line in FIG. Likewise, it is possible to fold the pivot 20 as a central axis.

As illustrated in FIG. 6, the locking protrusion 40 of the movable member 24 is in line contact with the stopper 30 of the fixing member 22, so that the assembly allowable tolerance of the components Even if there is a gap, the locked state of the bench 14 is kept in a very strong and stable state, and in particular, the more the bench 14 tries to move during use, the more firmly the locked state is maintained, and the locked state is more easily released. It can be used to provide excellent operational reliability.

The present invention configured as described above is the movable member 24 by simply lifting and lowering the movable member 24 suspended from the column 16 of the bench 14 as well represented in FIGS. 3 to 6. As shown in FIG. 1, while the locking protrusion 40 of the bottom frame 12 overruns the lower slope 32, the curved surface 36 and the upper slope 34 of the stopper 30 mounted on the bottom frame 12, Likewise, the bench 14 is maintained in an erect state outside the picnic table 10 or the bench 14 is laid under the picnic table 10. In the present invention, an extended guide portion 54 is formed in front of the locking projection 40 of the movable member 24 to facilitate smooth contact between the locking projection 40 and the stopper 30, and the movable member ( It is preferable to provide a stopper 56 for preventing the movable member 24 from being excessively lifted at the upper end of the 24), and the fixing member 22 and the movable member 24 are provided on the picnic table 10. Each of the four pillars 16 supporting the bench 14 and the four corners of the floor frame 12 may be mounted, and the movable members 24 form a pair of two by one operation means 50 It is desirable to interlock.

7 illustrates another embodiment of the present invention.

The bench folding device shown in FIG. 7 is suitable for a floor frame and a bench post that may be made of a circular pipe with the fixing member 22 and the movable member 24 shown in FIG. 3, and in order to make it more robust and stable, a plurality of fixing members ( It has the same structure as the fixed member 22 and the movable member 24 except that 220 and the plural movable member 240 are formed.

In the present invention, the fixing member 22 may be mounted on the bottom frame 12 by welding, bolts, or rivets, and the movable member 24 is directly mounted on the column 16 of the bench 14 or illustrated As described above, it can also be mounted using a bracket 58. In addition, the lower end of the column 16 of the bench 14 may be provided with a buffer pad 60 to reduce impact or noise.

10… … Picnic table 12… … Floor frame
14... … Bench 16… … Bench post
18... … Spiral part 20... … Fevert
22... … Fixing member 24... … Movable member
26... … Assembly guide hole 28... … nut
30... … Stopper 32... … Lower slope
34... … Upper slope 36... … Curved part
38... … Assembly guide hole 40… … Bent jaw
42... … Bolt 44... … nut
46... … Front end of the locking jaw 48... … The rear end of the locking jaw
50… … Operation means 52... … Operation means connection hole
54... … Information Section 58... … Brakit
220... … Plural fixing member 240... … Plural movable member

Claims (5)

In the bench folding device for a picnic table for erecting or folding the pillar 16 of the bench 14 separated from the bottom frame 12 of the picnic table 10, a spiral portion 18 is provided at one side of the lower end of the pillar 16. ) Having a pivot (20) is fixed, the assembly guide hole (26) through which the spiral part (18) is passed through and the nut (28) is fastened, and a stopper (30) having an isosceles triangular pyramid shape is provided. A fixing member 22 that also serves as a hinge mounted at the end of the bottom frame 12 and a bent locking jaw 40 corresponding to the stopper 30 are formed at the lower end, and the stopper 30 is eccentric with the A bench folding device for a picnic table, characterized in that the upper end of the bench 14 is made of a movable member 24 mounted with a bolt 42 and a nut 44 forming a rotation axis so as to be rotatable on the column 16 side. According to claim 1, The stopper (30) of the fixing member (22), the lower inclined surface (32) and the upper inclined surface (34) is connected by a curved portion (36), the locking projection (40) of the movable member (24). ) Is designed to overrun the lower slope 32, the curved portion 36 and the upper slope 34 of the stopper 30, so that the bench 14 can be locked or released in an erect state to be folded. Bench folding device for picnic table According to claim 1, The distance (L1) between the bolt (42) forming the rotation axis of the movable member (24) and the front end (46) of the locking projection (40) is the bolt (42) and the locking projection ( It is formed longer than the distance L2 with the rear end 48 of 40, so that when the movable member 24 is locked, the locking protrusion 40 of the movable member 24 is at a lower slope of the stopper 30 ( A bench folding device for a picnic table, characterized in that it is in line contact with between 32) and the curved portion 36. The bench folding apparatus for a picnic table according to claim 1, wherein a hole (52) is formed at a lower end of the movable member (24) to which an operating means (50) made of either a wire rope or a steel bar is connected. The bench folding apparatus for a picnic table according to claim 1, wherein the fixing member (22) and the movable member (24) are formed of a plurality of fixing members (220) and a plurality of movable members (240), respectively.

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