JPS5962010A - Erecting and falling apparatus of table leg - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to a device for raising table legs for desks, tables, dining tables, etc., and in particular, folds and raises table legs quickly and easily in one motion (one-touch), and is more portable. This invention relates to a table that has a convenient handle on a pair of movers that move symmetrically.

Conventionally, there is a table whose legs can be folded and stored for convenience when not in use. However, with these conventional tables, when the table is pulled up from the side to raise or lower the legs, the handle can be operated easily and in one motion under exactly the same conditions regardless of which side it is raised from.
There was no one that could do this with a wonton (wonder punch), and furthermore, there was no one that used the handle to make it easier to move the table.

Therefore, the object of the present invention is to quickly and easily fold and raise table legs by operating one of the handles provided on a pair of movers that move symmetrically, and to fold and raise table legs quickly and easily in one motion (one-touch). To realize a table which can be raised and tightened near each leg by a support rod for a book, and which has a handle on a pair of symmetrically movable movers, which is convenient to carry.

Embodiments of the present invention will be described in detail and specifically below based on the drawings.

Figure 1.2 shows an embodiment of the invention. Legs 6, 6, 8, 8 are erected on the back surface of the face plate 4 of the table 2, and are configured to be foldable only inwardly by hinges 1o. Between the legs 6 and 6 is a crosspiece 12 serving as an auxiliary shrine.
is constructed to raise and lower the legs 6.6 at the same time, and also prevents the legs 6.6 from swinging laterally. Similarly, a crosspiece 14 is installed between the legs 8.8 for the same purpose as described above. As above 12
．． 14, one end of the lanal support rods 20a, 20b, 22a, 22b, made of an elastic material such as a steel plate, is pivotally attached to the first pivot point 24a, 24a, 24b, respectively, via a mounting bracket 16.
, 24b, and these first pivot points 24a, 2ja, 2
4b and 24b are guide grooves 21a fixedly provided on the back surface of the face plate, respectively.
, 21a, 21b, and 21b, and is configured to perform standing and lowering movements. Crosspiece 1 of this mounting bracket 16
2.14 or legs 6.6; 8.8 may be attached to the base plate or the crosspiece, but the first pivot points 24a, 24a1 and 24
The center lines 42a, 42b connecting the legs 6.6, 24b, 24b, 24b, 24b, 24b, and 24b are located considerably inside the lines 7a, 7b connecting the legs 6.6 and 8.8, respectively, in the vicinity of the first pivot point. Alternatively, it becomes a well-proportioned table that is easy to use in terms of design, and is also convenient to handle. Moreover, the support rods 20a, 20b,
The other ends of 22a and 22b are overlapped and pivotally connected to movable rods 26a and 26b, respectively, and second pivot points 28a, 28a, 2
8b and 28b. And the moving rods 26a, 26b
Movers 30a and 30b are pivotally attached to the movers 30a and 30b.
a, 30b are guide grooves 32a, 32 provided on the back surface of the face plate 4.
It is configured to be able to slide so that it does not come off from inside b. The movers 30a, 30b also have handles 34a, 34b.
are provided, and the movable members 30a, 30b are moved in the guide grooves 32a, 32b by the general handles 34a, 34b, and the movable rods 26a, 26b are moved along the face plate.

One end of a first connecting rod 36a, 36b is pivotally attached to the movers 30a, 30b, respectively, and the first connecting rod 36a,
The other ends of 36b are pivotally connected to both ends of the second connecting rod 38.

The second connecting rod 38 is pivotally attached to the back surface of the face plate 4 at a rotation center 40, and is provided to move the sliders 30a, 30b symmetrically.

Further, the lengths of the support rod and the moving rod are set to be slightly longer than the distances between the first connecting rods 24a, 24a, 24b, and 24b, respectively, when the legs are raised, and the second pivot points 28a and 28b are The first pivot point 24a, 24a, 24b, 24b can be moved to a position slightly beyond center lines 42a, 42b, which are straight lines connecting each of them, and the stopper 3
1 so that it can stop when it comes into contact with it. Reference numeral 44 is a curtain that serves as a decoration and assists in tightening the legs 6.8 when they stand up.

Since the embodiment of the present invention is constructed as described above, it operates as follows.

In order to lower the legs from the standing state of the legs shown in FIG. 1 to the position shown in FIG.
Move inside b. Then, the first connecting rod 36a, 3
6b and the second connecting rod 38, the leg 6.8 starts to fold inward and is folded.

Furthermore, in order to raise the legs 6.8 which are in the lying position, the above-mentioned operation is completely reversed. That is, the mover 30a (
A relatively strong force is applied to the handle 34a (or 34b) in order to move the handle 30b) downward (or upward) in FIG. The reason why this relatively strong force is required is because of the rotation axis M1 of the leg base hinge 10 when the leg is falling, and the crosspiece 12.14 side of the mounting brackets 16a, 16b, 18a, 18b, which is the point of application of the force when raising the leg. With the rotation axis M2 of the hinge 16C118C,
This is because the difference in distance from the back surface of the face plate 4 is small.

The stepladder side mechanism of this configuration is most effective in applying a relatively strong force during this initial movement. In other words, the table of this configuration is configured so that when the legs fall down, both of the two handles are located at the side edge (outer edge side), which is the farthest position from the center of rotation.
By grasping the handle near the upper edge and putting a little weight on it, even weak women and children can easily move the handle toward the center of rotation, and as a result, all the legs begin to stand up, and the handle can be easily moved. The advantage is that even if you cross top dead center, you will still be able to get back on your feet.

Also, since the handle is always close to the side edge of the table when the legs fall down,
The table can be hung by grasping the handle, which allows the table to be hung at a low position on the body, making it very convenient to move the table to a storage location without getting tired.

By the above-described operation, the movers 30a, 30b slide in the guide grooves 32a, 32b, and finally reach the center lines 42a, 42.
Reach position b. When the position is reached, the support rod 20a,
20b, 22a, and 22b are in a state where the maximum elastic force is generated, strongly pushing the crosspieces 12 and 14 outward, and the table legs reach their climax.

However, in this invention, the mover 30a,
30b is movable to a position that slightly exceeds the center lines 42a, 42b, so after moving to a position that exceeds the center lines 42a, 42b, the stopper 31 comes into contact with the second pivot points 28a, 28b. Stop. However, at this time,
Since the support rods 20a, 20b, 22a, 22b are made of an elastic material such as a leaf spring, the second pivot points 28a, 2
The support rods 20a, 20b temporarily absorb the outward pushing force generated when the rods 8b cross the center lines 42a, 42b.
22a and 22b. Then, as soon as the second pivot points pass through the center lines 42a, 42b, the forces accumulated in the support rods 20a, 20b, 22a, 22b are combined with the forces perpendicular to the longitudinal direction of the guide grooves 32a, 32b and the guide The force along the grooves 32a, 3'2b is divided into a force along the grooves 32a, 3'2b, and the force along the slider moves the second pivot point 28a, 28b downward or upward, that is, in a direction that prevents the lodging of the leg. It is something that works. Therefore, the legs are always pressed in the upright tightening direction when the legs are fully mobile, and the legs are reliably prevented from falling down.

Although the other ends of the support rods 20a-, 20b, 22a, and 22b are pivotally connected to the movable rods 26a and 26b, they may be pivotally connected directly to the movers 30a and 30b instead of the movable rods. In this embodiment, the support rod is made of elastic material, but the material is not limited to this; the mounting bracket, crosspiece, movable rod, etc. may be made of elastic material, and elasticity may be added to these stepladder side mechanisms. It may be set as a mechanism that can occur.

Figure 3.4 shows a second embodiment of the invention.

In this second embodiment, parts that perform the same functions as those in the first embodiment described above are given the same reference numerals and will be explained.

This second embodiment is characterized by the legs 6.6;
8. One end of the first and second support rods 20a, 20b, 22a, 22b made of an elastic material is directly pivoted to each of the points 8.8 and 8.8.

” If configured as in the second embodiment, when the legs 6.8 are erected, the first and second support rods 20a, 20b, 22a,
22b functions as an elastic body, and when the second pivot point passes the top dead center, the first and second support rods temporarily absorb the extra force and the second pivot point passes the top dead center. At the same time, the accumulated force is released to prevent the second pivot point from moving, thereby tightening the legs to stand up.

It goes without saying that this invention is not limited to the above-described embodiments, and that various modifications can be made without departing from the spirit of the invention.

For example, in the embodiments of the present invention, a crosspiece is interposed between the leg and the support rod, but it is also possible to have a structure in which the leg and the mounting bracket or the support rod are directly pivotally connected.

Furthermore, it goes without saying that the shape of the legs that can be used in this invention is not limited to the upright leg, but may also be a so-called curved leg shape. If the legs are shaped like this, when a force is applied to the tip of the legs, the nuclear force will generate a force component against the legs, which can reliably prevent the legs from falling down. . In addition, at a position beyond the top dead center, if desired, it may be locked using a known locking method, such as a dowel pin locking groove, a locking mechanism using an elastic material such as a ball catcher, a rocking protrusion, or other locking method. Needless to say, it's a good thing.

Also, for example, in the above-mentioned embodiment, the second pivot point was stopped at a position slightly exceeding the top dead center to ensure super-maintainability, but if the second pivot point did not exceed the top dead center, It is also possible to maintain an extremely stable position or collapse the leg with a single movement. In other words, a locking mechanism using an elastic material such as a ball catcher or a swing protrusion can be installed between the rail and the slider, between the back of the face plate and the rotating plate, between the members of the legstand tilting mechanism, or between the surrounding members. It may be provided so as to engage or abut, and be stopped before or above the top dead center. In this case, it is preferable to adjust the strength of the elastic material of the locking mechanism or the length of the support rod or rotating plate as necessary.

Further, in the above embodiment, a stopper 31 is provided at one end of the rails 32a, 32b, and the stopper 31 allows the mover to
The movement of the legs 0a and 30b was stopped to tighten the legs in an upright position, but instead of the stopper 31, an L-shaped iron plate or the like may be fixed to the back of the face plate to prevent rotation of the connecting rod. Further, a blocking member may be provided between the first connecting rod and the second connecting rod,
It may be provided between the constituent members of the legstand folding mechanism or their peripheral members, or the following sliding prevention means may be used. That is, as shown in Figure 5.6,
A long Z-shaped locking tool 64 centered on the rotation center 40 and biased in the locking direction, that is, the direction of the arrow 62, is formed, and the outer side of the engaging portion 66, which is the end of the locking tool 64, is loosened. Slope. The handle 3 on the movers 30a and 30b has a built-in locking pin 68 that engages with the engaging portion 66 of the locking tool 64.
4a, 34b are divided into two parts, and the main handles 34a-1, 34
b-1 and child handle 34.2-2.34b-2, an elastic material is provided between the parent and child, and the setting is such that if the parent and child are grasped at the same time, the distance between them will be shortened, and if they are separated, they will be separated. Two connecting rods 72 and 74 each having a pivot portion 70 on each of the parent and child handles.
is pivoted. The length of the connecting rods 72 and 74 is such that when the parent and child handles, for example 34a-1 and 342-2, are grasped at the same time, the locking tool 64 is pushed outward on the outside of the pivot portion 70 and the engaging portion 66 is pressed. The length is set so that the engagement with the locking pin 68 is released. If the main handle 34a-1 and the child handle 34a-2 are grasped at the same time in the engaged state shown in FIG. 5 and the slider is moved, the engagement will be released and the legs will fall as shown in FIG. 6. Also, the 6th
To engage from the released state shown in the figure, it is sufficient to move one of the handles 34a or 34b in the direction of the rotation center 40, and the locking pin 68 gently slopes the engaging portion 66 at the end of the locking tool 64. At the end of the sliding movement, the engaging portion 66 and the locking pin 68 are engaged, and the leg is secured to stand.

Furthermore, if a large number of the above-mentioned retaining parts 66 are provided as shown in Fig. 7.8, the movement of the slider can be stopped and adjusted in multiple stages, and the loosening of the legs can be prevented. be.

Since the present invention is constructed as described in detail above, it produces the following effects.

fl), since each leg or the auxiliary member near the leg is supported by two sets of support rods or mounting brackets connected to the support rods, it is possible to achieve strong and ultra-tightening, and the legs do not swing. do not have.

(2) Handles are provided on the pair of movers that move symmetrically, so when the table is pulled up from the side, the legs can be easily raised and folded under exactly the same conditions regardless of which side it is pulled up from, and in one motion. It can be carried out with one tonne (one tonne), has an outstanding single M structure, has a long service life, and is inexpensive to manufacture.

(3) Moreover, when the legs fall down, the handles are always on the side of the table (outer edge side).
It has the advantage of being able to be carried by hanging it by the handle, and also being able to stand it up for storage.

(4) In addition, since the movement of the slider that moves on the back of the face plate is a vertical and linear motion, even a weak person can easily move from the initial movement by just putting a little weight on the handle, and the legs can be moved easily. Raising and folding can be accomplished more quickly and easily.

(5) Furthermore, since the handle of the slider is positioned near the center of the face plate when the table is fully movable, the handle does not get in the way when the table is used.

In addition, in this invention, a crosspiece is a concept that refers to all members that connect legs with each other, and an auxiliary member includes a crosspiece, and refers to a member that is connected to a leg and is interposed between the other and the support rod. Say the concept you are referring to. In addition, the leg standing mechanism refers to all the members involved in raising and lowering the legs, and collectively refers to all the members through which the force applied to the handle reaches the legs.

[Brief explanation of the drawing]

1.2 shows an embodiment of the present invention. FIG. 1 is a plan view showing the state when the legs are standing up, and FIG. 2 is a plan view showing the state when the legs are lowered. Figure 3.4 shows the second embodiment of this invention;
This figure is a plan view showing the state when the legs are upright, and FIG. 4 is a plan view showing the state when the legs are down. Figures 5.6 and 7.8 show other embodiments of the present invention for stopping the mover. Figure 5 is an enlarged view of the main part when engaged, and Figure 6 is an enlarged view of the main part when engaged. FIG. 7 is an enlarged view of the main part when disengaged, FIG. 7 is an enlarged view of the main part when engaged, and FIG. 8 is an enlarged view of the main part when disengaged. In the figure, 2 is a table, 4 is a face plate, 6.8 is a leg, 12.
14 is a crosspiece, 20a, 20b, 22a, 22b are support rods,
24a and 24b are first pivot points, and 28a and 28b are second pivot points. Agent Patent Attorney Yoshimi Saigo Figure 5 Figure 6

Claims (1)

[Claims] Four legs are installed on the back of the face plate so that they can be folded inward.
One end of each of the four support rods is pivotally connected to the leg or an auxiliary member connected to the leg as a first pivot point, and the other end of the support rod is pivotally connected to both ends of a movable rod as a second pivot point. As a landing point, a handle is fixed to the movable rod, and a guide groove is provided for guiding the generally movable rod in the direction of the raising and lowering legs, one end of a first connecting rod is pivotally attached to each of the two movable rods, The other end of the first connecting rod is pivotally connected to each end of a second connecting rod rotatably provided at the center of the face plate, and the movable rod is pushed toward the center of the face plate. A device for raising and lowering table legs, characterized in that the legs are tilted by separating the rods from the center of the face plate.