JPH0430284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a side frame used for a stepped stand, such as a doll stand or a display stand, in which stepped boards are arranged in a stepped manner.

(Prior Art) Among stepped tables in which stepped boards are arranged in a step-like manner, there are some that can be disassembled and assembled freely so that they can be used temporarily.

For example, a doll platform for displaying Hina dolls is generally made up of a plurality of tier boards and a frame that make up each tier, and the frame is made up of a side frame with tiers and a reinforcing frame. After that, the tiers are stretched one by one between the tiers of the side frame, and when disassembled, after removing the tiers from the side frame, the frame can be disassembled into each frame element and housed in a box. It's becoming like that.

By the way, the step part of the side frame, which is a main element of the frame, must be firmly supported in a step-like manner, so conventionally, it has been fixedly formed by welding etc. Alternatively, the stepped frame elements were assembled step by step using bolts or the like.

(Problem to be solved by the invention) For this reason, in the case of a side frame with a fixedly formed step, even if it is put away (disassembled), the presence of the step in the side frame will result in However, in the case where the step frame elements are assembled to form the step section, it is time-consuming to assemble and disassemble the step frame elements. The problem was that even if it was lost, the frame could no longer be rebuilt.

The present invention has been made in view of the above-mentioned problems, and its technical objectives are to reduce the storage space in the stepped portion of the side frame, and to facilitate assembly and cleanup. An object of the present invention is to provide a side frame for a stepped stand.

(Means for Solving the Problems) In order to achieve the above-mentioned technical problem, the present invention includes a stepped portion that supports a plurality of stepped plates in a stepped manner, and the stepped portion supports each of the stepped plates. In a side frame for a stepped stand that is fixed so as to extend outward from the stepped portion, the stepped portion is formed by sequentially connecting four-bar links, and each of the four-bar links is connected to the four-bar link. The virtual quadrilateral formed by connecting each support point of the link is a parallelogram, and the real upper side part that extends above and on the outside support point side of the support point on the upper and inside side, and the Each of the four-bar links is configured such that the actual lower side extending on the support point side below and inside the support point is parallel to the support point, and the actual outside side of each of the four-bar links is parallel to the support point side below and inside the support point. The support point on the upper and outer side of the point is configured to be deviated closer to the actual inner side than the support point on the lower and outer side.

With this configuration, the four-bar links that make up each stage of the side frame expand and contract like a pantograph, making it easy to clean up by folding the four-bar links. In addition, the storage space can be reduced to a minimum. Further, during assembly, the stepped portion of the side frame can be easily formed by expanding the four-bar link. Furthermore, since the four-bar links are connected to each other, it is possible to reliably prevent the step components of the side frame, which are the main elements of the frame, from being lost.

Moreover, if each 4-bar link is folded and compressed, and the folded 4-bar links are made approximately parallel, there will be a space approximately the thickness of the tier plate between each folded 4-bar link. Even if the side frame has a step board that extends outward from the side frame and is fixed, the folded four-bar link and the step board will be located in that space. The board is
They are sequentially stacked one on top of the other. Therefore, even the side frame that fixes the step board extending outward can not only be folded compactly, but also be kept in a stable state at that time.

(Example) An example of the present invention will be described based on the drawings using a doll's platform as an example.

Figure 1 shows a doll's platform 1 according to an embodiment.
Here, the frame 3 is composed of seven tiered plates 2, 2, . . . and a frame 3, and the frame 3 is composed of a pair of side frames 4, 4 and a reinforcing frame (not shown).

The side frame 4 has a stepped section A and a support column 5.
The step plates 2 span each step 6 of the step section A, and are arranged in a step-like manner, that is, the steps become higher toward the rear.

As shown in FIG. 2, each step 6 of the step A of the side frame 4 is formed in a pantograph shape with four-bar links 7, and the four-bar links 7 are connected to each other to form the step A of the side frame 4. It consists of still,
In the drawings after FIG. 2, three of the seven stages are shown as appropriate.

The elements of the four-bar link 7 basically consist of a common link member indicated by the reference numeral 8 in FIG. , a central through hole 10 provided in the center between the through holes 9, 9, that is, equidistant from both the through holes 9, 9.
These through holes 9 and central through holes 10 are
It forms the center of rotation of the four-bar link 7.

That is, two common link members 8 are overlapped with their central through holes 10 aligned, and the central through holes 10 are rotatably riveted to form a set of common link members 8, and the common links of the set are The end through holes 9, 9 of the members 8, 8 are connected to the common link member 8, which forms another set.
By rotatably riveting them to the through holes 9, 9 of 8, a four-bar link 7 with four rotation centers, that is, a quadrilateral pantograph-shaped link, is formed, and the common link A series of four-bar links 7, 7 are formed by connecting the sets of members 8, 8 and rotatably riveting them as described above.
The uppermost stage and the lowermost stage are end link members 11a to 11d corresponding to one side of the four-bar link 7.
(FIG. 3) are respectively assembled to form the uppermost and lowermost four-bar links 7, and a series of these four-bar links 7 constitute a stepped portion A.

In this way, the number of four-bar links 7 that constitute each stage,
In other words, the number of stages can be set arbitrarily by changing the number of common link members 8. The step A configured in this manner can be formed into a step-like shape by pulling up the top step, and can be folded by pushing down the top step. Figures 4 and 5
The figure shows a state in which the stepped portion A is in the middle of being folded.

Further, in this embodiment, the common link member 8 is
As is clear from FIG. 3, a step 13 is provided in the link portion 12 on one side connecting the end through hole 9 and the center through hole 10, and this step 13 is equal to the thickness of the step plate 2, or The height is slightly higher than the thickness of the stepped plate 2, and using this step 13, the stepped portion A
It is possible to fold the step board 2 with it fixed. Then, the fixing of the step board 2 is done by the fifth step.
As shown in FIG. 6, the one-side link part 12 is attached by using a mounting part 14 that is provided at the upper end of the one-side link part 12 that directly supports the step board 2 and protrudes toward the opposing side frame 4. By screwing the screw 15 into the step plate 2 placed on the step plate 2,
is fixed (see Figure 7).

The end surface of the step plate 2 on the step 13 side is shown in FIGS. 4 and 5.
As can be seen from the figure, the 45 degree cut plane 15
is provided to form a rotation range for the link members 8, 11, and on the other hand, when the stepped portion A is shaped like a step, the step 13 of the link members 8, 11 facing the cut surface 15 is also A notch 16 of 45 degrees is provided which is received by the notch surface 15, and the notch surface 15 and the notch 16 cooperate to act as a stopper during assembly. and,
The step part A is fixed during assembly by inserting a lock pin 18 into a pin hole 17 formed in the link members 8, 11. Further, in FIG. 3, a paired link member 19 indicated by the reference numeral 19 is prepared in addition to the common link member 8 in this embodiment.
is used for attaching the stepped plate 2, and the paired link member 19 is used as a link member that forms a set with the common link member 8. This pair link member 19 is provided with a protrusion 20 having the same height as the step 13, and when folded, the protrusion 20 is attached to the adjacent pair link member 19.
By abutting against the inner surface of link member 9, each side of link members 8, 11, and 19 is maintained parallel. In order to maintain this state more reliably, a 45-degree notch 22 is formed in each step 13, and when folded, each notch 16,
22 are arranged to collide.

In FIG. 3, when the end link member 11b is assembled,
This is a member located at the rearmost end of the uppermost stage, and the end link member 11b is provided with mounting holes 24 for the support columns 5 at intervals in the longitudinal direction. In addition, the end link member indicated by 11c in FIG. 3 is a member that comes into direct contact with the floor during assembly, and is provided with a leg portion 25 having the same height as the step 13. A mounting hole 27 is provided. The end link member 11d is also a member that comes into direct contact with the floor together with the end link member 11c when folded, and is provided with leg portions 28 having the same height as the step 13.

When assembling the stepped portion A of the side frame 4 configured in this way, the top step is pulled up to form a step-like shape (Fig. 2), and the lock pin 18 is inserted into the pin hole 1.
At the same time, the L-shaped support 5 (which may be formed by fastening two members with bolts, etc.) is bolted to the uppermost and lowermost link members 11b and 11c. Therefore, it is used as chick stage 1. After the festival is over, in order to put away the Hinadan stage, we need to use the lock pin 18 and the pillar 5.
By removing the step A of the side frame 4, the step A of the side frame 4 can be folded up with the step plate 2 extending outward from the side frame 4 still attached. Therefore, not only is the storage space of the stepped portion A compact, but also the storage space of the stepped portion A is not only compact, but also the storage space of the stepped portion A is compact.
This saves you the trouble of removing it.

Although one embodiment of the present invention has been described above, the present invention is not limited thereto, and includes the following modifications. Characteristic parts of various modified examples will be explained below based on the drawings.

FIG. 8 shows a modification in which the angle of inclination of the stepped portion A is made gentler. That is, the first link member 30 that fixes the step board 2 is long, and the second link member 31 that forms the step of the step A is short. A long hole 32 is provided in the longitudinal direction of the long hole 32.
In other words, when forming the stepped portion A, the inclination angle of the stepped portion A can be made gentler by moving the center of rotation away from the center hole 10 while shaping the stepped portion A.

In the modification shown in FIG. 9, the inclination angle of the stepped portion A is made steeper, and contrary to the modification shown in FIG. 8, the first link member 33 for fixing the step plate 2 is short, The second link part 34 that forms the step of the step part A is formed long, and the second link member 34 is configured to have an elongated hole 32. In this case, it is preferable to provide a recess 35 on the back surface of the stepped plate 2 as a relief for the second link member 34 to facilitate folding. In this embodiment or the embodiment shown in FIG.
Since the center of rotation needs to shift along the axis, the center of rotation is formed by a member such as a bolt and nut that can be tightened as needed. For example, a bolt may be installed in the short link portions 30, 34, inserted into the elongated hole 32, and tightened with a nut. Further, in order to facilitate positioning during assembly, the elongated hole 32 may be provided with a positioning portion, for example, a recess with a step at the end of the elongated hole 32.

FIG. 10 shows a bent portion 36 on all or some of the link members 8, 11a to 11d, and 19 constituting the four-bar link 7, which collides with the side surface of the link member during assembly to regulate positioning. may be provided.

11 to 14 show the struts 5 that support the stepped portion A. In the case of the strut 5 shown in FIG. 11, the first strut 40 stands up on the floor during assembly, and the It is composed of a second support 41 extending along the second support 41, and a reinforcing frame 42 rotatably pinned to the second support 41, with one end of the first support 40 and one end of the second support 41 are fixed with a pin 43, and both 40 and 41 are rotatable around the pin 43, and a bolt insertion hole 44 is provided at the other end of the first and second supports 40 and 41. There is.
When assembling, the end link member 1 described above is
Mounting holes 24, 27 provided in 1b, 11c
The bolt insertion holes 43 and the bolt insertion holes 43 are overlapped and fastened with bolts and nuts, and the bolt insertion holes 45 provided at the tip of the reinforcing frame 42 are
The bolts are overlapped with bolt insertion holes (not shown) provided at appropriate positions of the joint link 7, and the bolts are
It is designed to be fastened with a nut.

FIG. 12 shows a modified example 50 of the support column 5.
The support column 50 here includes a pair of main bodies 51 that are fastened with bolts and nuts using the mounting holes 24 of the uppermost structural link element 11b, and a main body 51 that is fastened with bolts and nuts.
a reinforcing frame 52 rotatably pinned to the
53, one reinforcing frame 52 is provided with a hook 54 at its tip.
is hooked onto a planting pin 55 directly attached to the main body 51 of the opposing support column 50. The other reinforcing frame 53 corresponds to the second support column 41 described above.

For such a support 50, as shown in FIG. 13, a horizontal frame 56 extending toward the rear side of the stepped portion A is fixed to the top of the main body 51, and an enlarged stepped plate 57 is placed on the horizontal frame 56. The area of the top step board 2 is expanded by doing so. That is, the top of the main body 51 is provided with a bent part (not shown) bent in an L-shape from the side surface of the link member 11b along the rear end surface, and the horizontal frame 56 is fixed to the bent part. . In addition, reference numeral 5 is shown in Fig. 13.
A reinforcing frame 8 is rotatably pinned to the protruding end of the horizontal frame 56, and the free end of the reinforcing frame 58 is bolted to the side surface 51a of the main body 51.

14 and 15 show a case in which a supporting frame 60 for the stepped portion A is separately provided in order to prevent the center of the stepped portion A from hanging downward.

The support frame 60 has a support column 61 and a diagonal portion 62 extending in the direction of inclination of the stepped portion A.
2, and the support 61 and the diagonal portion 62 are connected to the support 6
The top part 63 of 1 is bolted and integrated. As shown in FIG. 15, the oblique portion 62 is provided with a groove 63, and the groove 63 has a stepped portion A.
The stepped portion A is supported by receiving the lower end of the diagonal portion 62 and fixing it with a bolt using the attachment hole 27 of the end link member 11c.

By separately providing such a support frame 60, the strength against bending deformation of the stepped portion A can be increased. Therefore, a display stand for displaying heavy objects,
Alternatively, the present invention can also be applied to a multi-stage step stool.

FIG. 16 shows a modification 70 of the four-bar link 7, in which link members 71, . is provided so that when the step part A is folded, it can be put away with the step plate 2 still attached. Of course, the link member 71, the connecting link 7
2. Similarly to the first embodiment, the lock pin 18 can be used to secure the assembly during assembly.

(Effects of the Invention) As is clear from the above description, the present invention utilizes four-bar links that expand and contract like a pantograph to form each stage of the side frame, making it easy to assemble and clean up. In addition, since the 4-bar link can be stored in a folded state, only a small amount of storage space is required.
Since the step section is formed by connecting joint links, there is an advantage that loss of each element can be reliably prevented.

Moreover, even if the side frame has a stepped plate that is fixed and protrudes outward from the side frame, the side frame can be folded into a compact size in a stable state.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention;
Figure 2 is an enlarged front view of the stepped section, and Figure 3 is the 4
An exploded view showing the elements of the joint link, Figures 4 and 5 are front views showing the folding process of the step, and Figures 6 and 7 are
The figure shows the step board fixing method, and Figures 8 and 9 are
FIG. 10 is a partial front view showing a modified example of a four-bar link; FIG. 10 is a perspective view of a main part showing an example of a position fixing means for a four-bar link; FIGS. 11 and 12 are views showing the support column side;
Fig. 13 is a side view of the main part of an embodiment in which the area of the uppermost step plate is enlarged, Fig. 14 is a front view of the support frame that supports the step, Fig. 15 is a cross-sectional view of Fig. 14;
FIG. 6 is a front view showing a modification of the stepped portion. 2...Step board, 4...Side frame, 6...Step of step, 7...4-section link, 8...Common link member, A...Step.

Claims (1)

[Claims] 1. A step part supporting a plurality of step plates in a step-like manner,
In a side frame for a stepped stand in which the step portion fixes each step plate so as to extend outward from the step portion, the step portion is formed by sequentially connecting four-bar links; In each of the four-bar links, the virtual quadrangle formed by connecting the support points of the four-bar links is a parallelogram, and the reality extends from the upper and inner support points to the upper and outer support points. The upper side portion is configured to be parallel to the lower side portion of the reality that extends on the side of the support point on the lower side and inside of the support point on the lower side and outside, and each of the four-bar links is configured to be parallel to the support point on the outside of the reality. The side edge is configured to be deviated closer to the actual inner side than the lower and outer support point on the side of the upper and outer support point than the lower and outer support point, A side frame for a stepped stand.