JPS6331642Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a leg mounting bracket used for foldably attaching legs to a low table, table, etc.

(Prior art) Conventionally, as a structure in which the legs are foldably attached to the underside of the top plate of a table, etc., metal legs formed in the shape of a rectangular cylinder from a thin steel plate are attached to a holding frame with the bottom formed in a U-shape. an engagement pin rotatably mounted directly between the front and rear facing side plates by a pivot, and between the leg body and the holding frame for maintaining the leg body in an upright state and a collapsed state; By providing a guide hole for an engagement pin and an engagement notch, and attaching the holding frame to the bottom surface of the top plate via mounting pieces bent outward at the upper end of each side plate of the holding frame, the legs can be attached to the top plate. There is one that is foldable and can be attached to the body (see, for example, Japanese Utility Model Publication No. 10111/1983).

However, in this type of conventional leg mounting groove construction, the legs are directly attached to the holding frame so that they can rotate and raise and lower, so the shapes and structures of the holding frame and the legs are mutually constrained, and compatibility is limited. In addition, it is necessary to provide pivot holes in the legs and engagement pins to maintain the standing and lying positions, making the structure of the legs complicated and difficult to manufacture. is troublesome. In particular, with the conventional structure, the legs cannot be freely replaced with respect to the holding frame.
In addition, there was a problem in that the wooden square rod-shaped legs could not be foldably attached to the top plate.

(Purpose of the invention) The present invention was made in order to solve such conventional problems, and regardless of the shape and structure of the legs, it is possible to easily form legs made of wooden square rods or other desired legs. We provide leg mounting brackets that can be mounted, improve compatibility and mass production, reduce costs, and reliably hold the legs in the upright and fallen states, increasing product value. be.

(Structure of the invention) The leg mounting bracket of the present invention has a U-shaped cross section and has a leg mounting portion on the lower surface of one side of the flat box-shaped fixing bracket that has a mounting portion for attaching to a top plate of a table, etc. One side of the movable bracket is rotatably supported by a horizontal pivot, so that the movable bracket can be placed in a lying position, almost parallel to the fixed bracket, and in an upright position, hanging from the fixed bracket. changeably connected to the state,
A locking rod for maintaining the inverted state of the movable metal fitting is provided on one of the other side of the fixed metal fitting and the other side of the movable metal fitting, and is movable in a direction parallel to the pivot axis and toward and away from the pivot axis, The other side is provided with an engaging portion of the locking rod, and at least when the movable metal fitting is collapsed, the locking rod is located on substantially the same horizontal plane as the pivot and is removably engaged with the engaging portion. The positional relationship of the pivot, locking rod, and engaging part is set,
Further, in the vicinity of the pivot portion of the movable metal fitting, one of the fixed metal fitting and the movable metal fitting is provided with a locking engagement portion that maintains the upright state of the movable metal fitting, and the other is provided between the above-mentioned pivot and the locking rod. A locking member is slidably provided at a location corresponding to the movable metal fitting, and when the movable metal fitting is raised, this locking member engages with the locking engagement portion to prevent the movable metal fitting from rotating in the direction of collapse. The present invention is characterized in that the locking member is provided so as to be freely changeable between the locking position and the unlocking position in which the locking member is disengaged from the locking engagement portion and allows the movable metal fitting to fall down.

This configuration makes it especially suitable for mounting wooden square rod-shaped legs, and also provides compatibility and
It is highly suitable for mass production, enables cost reduction, and securely maintains the legs in the upright and fallen states.Furthermore, the entire metal fitting is compactly constructed, making it inconspicuous when the legs are in the upright position. Product value is increased.

(Example) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an example of the leg mounting bracket according to the present invention. In the figure, A is the leg mounting bracket, 1 is the fixing bracket, 2 is the movable bracket, 3 is the pivot, and 4 is the engagement bracket. The stopper 5 indicates a locking member. The fixing fitting 1 includes a rectangular substrate 11 and front and rear side plates 12,1.
2' and either the left or right side plate 13,
It is formed into a flat box shape with an opening at the bottom and either the left or right side, and mounting holes 14 are provided at several locations on the substrate 11 for mounting to a top plate B such as a table. The movable fitting 2 is a rectangular leg mounting plate 2.
1 and the front and rear side plates 22, 22' to form a U-shaped cross section, and the leg mounting plate 21 is provided with an elongated leg mounting hole 23 in the center thereof, and a leg mounting hole 23 is provided around the mounting hole 23. Hole 2 for preventing rotation of leg body C
4. Holes for nailing 24', 24', oval reinforcing ribs 25, and linear reinforcing ribs 25' are provided.
Reference numeral 14' denotes a through hole, which is provided in the center of the base plate 11 of the fixed metal fitting 1 so as to face the leg attachment hole 23 of the movable metal fitting 2. In addition, fixed metal fitting 1 and movable metal fitting 2
is usually formed by pressing a thick steel plate, but may also be formed by die casting of aluminum or the like.

The movable metal fitting 2 has front and rear side plates 22, 22'.
One end is rotatably supported on one end of the front and rear side plates 12, 12' of the fixing bracket 1 by a horizontal pivot 3 along the front-rear direction, and overlapped almost parallel to the fixing bracket 1. It is configured to be freely changeable between a lying down state and an upright state hanging down from the fixture 1. Furthermore, the movable metal fitting 2 is biased by the spring 61 in the direction in which it hangs down relative to the fixed metal fitting 1, and the pivot side end 21a of the leg mounting plate 21 of the movable metal fitting 2,
By engaging with the stopper protrusions 15, 15' protruding from the lower surface of the base plate 11 of the fixed metal fitting 1, the movable metal fitting 2 is prevented from rotating by a predetermined angle (approximately 90 degrees) or more relative to the fixed metal fitting 1. configured to prevent it.

The other ends of the front and rear side plates 12, 12' of the fixture 1 are provided with elongated holes 16, 16' that are long in the left-right direction, and a locking rod 4 that extends in the front-rear direction is provided between the elongated holes 16, 16'. is supported so as to be slidable in the left-right direction, and the locking rod 4 is urged in the direction toward the pivot shaft 3 by springs 62, 62'. A leaf spring may be interposed between the side plate 13 and the locking rod 4 as a means for biasing the locking rod 4 toward the pivot shaft 3. Locking rod 4
Both ends of are protruded to the outside of the front and rear side plates 12, 12',
A hemispherical retaining/operating portion 41 is provided at the protruding end.

On the other hand, the front and rear side plates 22, 22' of the movable metal fitting 2 are provided with cut-out engagement portions 26, 26' at the tips thereof, which can be engaged with the locking rods 4 when the movable metal fitting 2 is folded down. In this case, the lower sides 26a, 26' of the engaging parts 26, 26' are arranged so that the engaging parts 26, 26' can easily engage with the locking rod 4 when the movable metal fitting 2 is collapsed.
a' is formed longer than the upper side parts 26b, 26b', and the locking rod guide part 26 has an arc shape (an inclined surface may be used) at the tip of the upper side parts 26b, 26b'.
c, 26c' are provided.

The lock member 5 has a notch 5 provided at one end thereof.
1 and the elongated hole 52 provided at the other end, it is held slidably in the left and right direction between the pivot shaft 3 and the locking rod 4, and is held in the locked position (see Figs. 2, 4, and 5). )
and a release position (see FIG. 7), and is biased toward the pivot shaft 3 by a spring 63. Reference numerals 17 indicate guide projections of the locking member 5, which are protruded from the inner surface of the substrate 11. A locking protrusion 53 is provided near the end of the locking member 5 closer to the pivot 3, and the protrusion 53 is provided at the pivot-side end of one side plate 22' of the movable bracket 2 when the movable bracket 2 is raised. It is configured to removably engage with a cut-out lock engaging portion 27. Further, in the side plate 22', a notch 28 with which the protrusion 53 engages is provided in a portion corresponding to the locking protrusion 53 when the movable metal fitting 2 is folded down, and an arc-shaped opening on the pivot side of the notch 28 is provided. A guide portion 28a is provided.

When using the leg mounting brackets A configured as described above, attach the leg mounting brackets A to each corner of the lower surface of the table top B, as shown in FIGS. 3 is located on the inside, and attach it with several fasteners such as wood screws 7 using the mounting holes 14 provided in the board 11 of each fixing bracket 1. After that, the fixing bracket 1 With the movable bracket 2 standing upright, insert the mounting bolt 8 protruding from the center of the upper end of the leg C into the mounting hole 23 provided in the leg mounting plate 21 of the movable bracket 2, and then tighten the nut. By fixing at 81, the leg body C is connected to the movable metal fitting 2.

In this case, instead of the elongated leg attachment hole 23,
A screw hole is provided in advance by welding a nut on the inner surface of the leg body mounting plate 21, and the bolt 8 protruding from the leg body C is screwed into this screw hole to attach the leg body C to the movable metal fitting 2. However, if the leg attachment hole 23 is formed into an elongated hole as shown in the figure, the attachment position can be freely adjusted to the left or right depending on the thickness of the leg C and other desired conditions.

When the leg C has a circular cross section, there is no need to prevent it from rotating, but when installing a square bar-shaped leg C, a rotation preventing protrusion is provided on the upper end of the leg C separately from the mounting bolt 8. by protruding and engaging the protrusion with the rotation stopper hole 24 provided in the leg mounting plate 21, or by using the nailing hole 24' provided in the leg mounting plate 21 to secure the mounting plate. By driving a nail into the upper end surface of the leg C from the inner surface of the 21, the leg C is prevented from rotating, and both front and rear sides of the leg C are parallel to the side plates 22, 22' of the movable metal fitting 2. Attach to. Note that a sharp anti-rotation protrusion is provided in advance on the surface of the leg attachment plate 21, and when attaching the leg, the protrusion is bitten into the upper end surface of the leg C.
The rotation may be stopped.

In this way, by attaching the fixed metal fittings 1 to the lower surface of the top plate B and attaching the legs C to the movable metal fittings 2, the legs C are foldably attached to the top plate B.

When the leg C is in the folded state, the movable bracket 2 is erected at an angle of approximately 90 degrees to the fixed bracket 1, as shown in FIGS.
is facing substantially parallel to the top plate A, and in this state, the pivot side end 21a of the leg mounting plate 21 of the movable metal fitting 2 is attached to the base plate 1 of the fixed metal fitting 1 by the spring 61.
A stopper protrusion 15, 1 protruding from the lower surface of 1
5' to prevent the movable metal fitting 2 from rotating more than 90 degrees, and the locking protrusion 53 of the locking member 5 is engaged with one side of the movable metal fitting 2 by the springs 63, 63'. The movable metal fitting 2 is engaged with a locking engagement portion 27 provided near the pivot side of the side plate 22', thereby preventing the movable metal fitting 2 from rotating in the direction of collapse.

As a result, the legs C are held in a folded state in which the movable metal fitting 2 is erected at approximately 90 degrees with respect to the fixed metal fitting 1, and the legs C are opposed to the top plate A in a substantially parallel manner. Moreover, the pivot side end 21a of the movable metal fitting 2
By the engagement with the stopper protrusions 15, 15' of the fixed metal fitting 1 and the engagement between the locking protrusion 53 and the locking engagement part 27, so-called rattling is prevented, and the movable metal fitting is 2 and the folded state of the legs C are reliably maintained.

After that, when the legs C are to be raised and unfolded relative to the top plate A, the locking protrusion 53 of the locking member 5 is released from the locking engagement part 27 to release the lock, and then the legs C are released. The movable bracket 2 is rotated in the direction of standing up, and the movable bracket 2 integrated therewith is rotated in the direction of collapse.
The engaging portions 26, 2 provided on the side plates 22, 22' of
6' is engaged with the locking rod 4 provided on the fixed metal fitting 1, the legs C are maintained in the upright and deployed state and the movable metal fitting 2 is maintained in the collapsed state (Fig. 6,
(See Figure 7).

In this case, the locking member 5 may be connected with an operating section, the operating section may be protruded to the outside of the fixture 1, and the locking member 5 may be unlocked by holding the operating section and sliding the locking member 5. However, in the illustrated example, the locking member 5 can be slid to release the lock by sliding the locking rod 4, thereby simplifying the operation structure.

Note that by holding the locking rod 4 and sliding the locking member 5, the locking protrusion 53 is inserted into the locking engagement portion 27.
After the movable metal fitting 2 is rotated, the projecting piece 53 is engaged with the notch 28 along the guide portion 28a, so that even if the locking rod 4 is released, the leg body remains unchanged. C and the rotation of the movable metal fitting 2 will not be hindered.

Furthermore, when the locking rod 4 is released after the lock is released, the locking rod 4 is held inwardly biased by the springs 62, 62', but the leg C is not extended. As the movable metal fitting 2 falls down, the locking rod 4 is once slid outward by the locking rod guide portions 26c, 26c', and then the spring 6 is moved as shown in FIG.
2, 62', and the engaging portions 26,
26' automatically engages with the movable fitting 2.
The legs C are automatically held in the unfolded state in which the legs C are erected with respect to the top plate B while the legs C are in a laid down state in which they overlap in parallel with the fixture 1. In addition, when the movable metal fitting 2 is in the laid down state, the locking protrusion 53 of the locking member 5 engages with the notch 28 of the side plate 22', as shown in FIG. 7, and is retracted to the right from the locked position. .

When the movable metal fitting 2 is in the collapsed state and the legs C are in the unfolded and erected state, the fixed metal fitting 1 is shaped into a flat box shape, and the movable metal fitting 2
is formed into a U-shaped cross section, and the pivot shaft 3 and the locking rod 4 are arranged at a predetermined interval from side to side, so that the movable fitting 2 is held in a laid down state in which it overlaps parallel to the fixed fitting 1. Because of this, the height h of the leg mounting bracket A can be reduced, and the entire bracket can be configured compactly, making it possible to use it in a very stylish manner.

Further, with the movable metal fittings 2 superimposed parallel to the fixed metal fittings 1, the tip end 21b of the leg mounting plate 21 is brought into contact with the lower end surface of the side plate 13, and the side plate 2
By bringing the upper end surfaces of 2 and 22' into contact with the inner surface of the base plate 11, the load can be supported by the contact portions, so-called rattling can be prevented, and the leg C can be firmly maintained in the upright and deployed state.

Next, when folding the leg body C, hold the operating part 41 of the locking rod 4 and slide the coaxial shaft 4 outward to remove it from the engaging parts 26, 26', and remove the movable metal fitting 2 and this. By rotating the leg body C attached to the holder inward about the pivot 3, the movable bracket 2 is projected downward relative to the fixed bracket 1, as shown in FIGS. 4 and 5. While changing to the standing state, the legs C are folded parallel to the top board B. At this time, since the movable metal fitting 2 is biased in the upright direction by the spring 6, the leg body C can be easily folded with a slight force. If the force of the spring 6 is made strong, the legs C can be automatically folded by the spring force simply by removing the locking rod 4 from the engaging portions 26, 26'.

In addition, after folding the leg C, as mentioned above,
By the engagement between the pivot side end 21a of the movable metal fitting 2 and the stopper protrusions 15, 15' of the fixed metal fitting 1, and the engagement between the locking protrusion 53 and the locking engagement part 27, The folded state of the legs A is reliably maintained.

In addition, in the folded state of the leg C, as shown in FIG. 8, the tip 21b of the leg mounting plate 21 of the movable metal fitting 2 protrudes from the side surface of the leg C, and this protruding portion is made of rubber, plastic, etc. By attaching the cushion material 29, it is possible to prevent the side surfaces of the legs C and the top surface of the top plate B from being damaged when the tables are stacked with the legs C folded.
In this case, a notch 13a is provided in a portion of the side plate 13 of the fixture 1 corresponding to the cushion material 29, if necessary.

Further, as shown in FIG. 9, the leg mounting hole 23 is connected to two elongated holes extending from the center of the leg mounting plate 21 toward the left and right corners on the tip side of the plate 21 to form a V. It may be formed into a shape. In this way, even if the size of the leg C changes when attaching a leg with a rectangular cross section, the upper end corner of the leg C can be attached to either the left or right corner of the leg mounting plate 21. be able to. As a result, the leg mounting bracket A can be attached to the bottom corner of the top plate B, and the leg C can be attached to the corner, making positioning of the leg C even easier. Also, the leg mounting bracket A can be used for both left and right hands.

In the above embodiment, the engaging portions 26, 26' of the locking rod 4
is formed to open linearly in the direction of the distal end of the movable metal fitting 2, and when the movable metal fitting 2 is in a laid down state, the engaging portions 26, 26' are opened in an L-shape from the upper surface of the intermediate portion of the side plates 22, 22'. It may be formed so as to bite into the shape. In addition, the locking rod 4 is placed on the movable metal fitting 2 side, and the engaging portion 2
6, 26' may be provided on the fixture 1.

It should be noted that the leg body C is attached in an inclined state to the leg body attachment plate 21 of the movable metal fitting 2, or the side plate 2
By forming the upper end surfaces of 2 and 22' to be lower toward the tip of the movable metal fitting 2 and holding the movable metal fitting 2 in a laid-down state with an upward slope, the leg body C can be moved outwardly. It is also possible to hold it in a deployed state with an inclined spread.

(Effects of the invention) As explained above, the leg mounting bracket of the invention has the following effects.

In other words, the movable metal fittings are held by the fixed metal fittings so that they can rise and fall freely, the fixed metal fittings are attached to the top plate of a table, etc., and the legs are attached to the movable metal fittings, so regardless of the shape or structure of the legs, You can attach any other desired legs such as wooden square rods,
A versatile metal fitting can be obtained.

Furthermore, the attachment and support structure of the legs can be simplified, and the mass production of the leg attachment fittings can be improved, leading to significant cost reductions.

Furthermore, when the legs are in the unfolded and upright state, the movable bracket can be fixed in a laid down state parallel to the fixed bracket by the engagement of the locking rod and its engaging portion, and the leg can be reliably maintained in the unfolded and upright state. This can improve stability when using a table, etc.

In addition, when the leg is in the folded state, the movable bracket can be locked in an upright state relative to the fixed bracket by the locking engagement portion provided near the pivot portion of the movable bracket and the lock member, and the leg can be locked in an upright state with respect to the fixed bracket. It is possible to reliably maintain the folded state of the folded state and improve the safety of transportation in the folded state.

Furthermore, in order to maintain the expanded and upright state of the legs, the movable metal fittings, which have a U-shaped cross section, are placed in a laid down state where they are overlapped almost parallel to the fixed metal fittings, which are formed in the shape of a flat box, and the movable metal fittings are Locking rods for fixing are provided at positions parallel to the pivot axis and at predetermined intervals in the left-right direction so as to be movable in the left-right direction. By providing the component near the pivot point of the movable bracket, the height of the leg mounting bracket when the legs are unfolded and standing can be made low and compact, making the leg mounting bracket unnoticeable and very stylish. In particular, the wooden rectangular bar-shaped legs, which was conventionally considered difficult, can be easily folded and attached to the top plate, and the product value can be increased.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view showing an embodiment of the leg mounting bracket of the present invention, Figure 2 is a bottom view showing the assembled state in which the movable bracket is erected with respect to the fixed bracket, and Figure 3 is the same. A perspective view showing an example of use, FIG. 4 is a sectional view taken along the line in FIG. 2 showing the folded state of the leg, FIG. 5 is a sectional view taken along the line in FIG. 6, and FIG. The second figure shows the standing and unfolding state of
Figure 7 is the 4th cross-sectional view corresponding to the line.
The corresponding drawings, FIGS. 8 and 9 are a perspective view and a bottom view showing different embodiments, respectively. A... Leg mounting bracket, B... Top plate, C... Leg body, 1... Fixed bracket, 2... Movable bracket, 3... Pivot (horizontal axis), 4... Locking rod, 5... ...Lock member,
11... Board, 12, 12', 13... Side plate, 1
4...Mounting hole, 15...Protrusion for stopper, 21...
...Leg mounting plate, 21a... Pivot side end, 22, 2
2'...Side plate, 23...Leg mounting hole, 26,2
6'...Engaging portion (for holding in the collapsed position), 27...Lock engaging portion (for holding in the upright position), 61, 61, 63... Spring.

Claims (1)

[Scope of utility model registration request] One side of the movable bracket, which has a U-shaped cross section and has a leg attachment part, is mounted on the lower surface of one side of a flat box-shaped fixing bracket that has an attachment part to the top plate of a table, etc., and is attached to a horizontal pivot. By being rotatably supported by the movable metal fittings, the movable metal fittings are connected to the fixed metal fittings so as to be changeable between a laid down state in which they overlap in parallel with each other, and an upright state in which they hang down from the fixed metal fittings. side and
A locking rod for maintaining the collapsed state of the movable metal fitting is provided on one side of the other side of the movable metal fitting, and is movable in a direction parallel to the pivot axis and toward and away from the pivot axis,
The other side is provided with an engaging portion of the locking rod, and at least when the movable metal fitting is collapsed, the locking rod is located on substantially the same horizontal plane as the pivot and is removably engaged with the engaging portion. The positional relationship between the pivot, the locking rod, and the engaging portion is set, and in the vicinity of the pivot portion of the movable metal fitting, one of the fixed metal fitting and the movable metal fitting has a locking engagement that maintains the upright state of the movable metal fitting. A locking member is slidably provided at a corresponding location between the other pivot shaft and the locking rod, and this locking member engages with the locking engagement portion when the movable metal fitting is raised. A locking position where the movable metal fitting is prevented from rotating in the direction of collapse, and a lock release position where the locking member is disengaged from the locking engagement portion and allowing the movable metal fitting to fall down. A leg mounting bracket for a table, etc., which is characterized by the following: