JP6372994B2 - Furniture leg equipment - Google Patents

Description

  The present invention relates to a rod-like leg device in furniture such as a table.

There are various types of furniture leg devices. For example, tables are widely used in the form of bars. In a foldable table where the top plate can be tilted forward from a horizontal position to a forward tilt position, the leg device generally includes a main rod extending from near the bottom surface of the top plate to the floor, and a branch rod branching backward from the upper and lower middle portions of the main plate. in is configured, therefore, the leg device are substantially human-shape when viewed from the side (e.g., Patent documents 1 to 3.).

  The reason why the leg device is formed in a human character shape in the folding table is that the leg device of the table arranged in the front and rear can be fitted to each other by positioning the branch arm on the left and right outer sides of the main fence. . In addition, as a leg device composed of a main fence and a branch fence, there is an inverted Y type branching two branch fences from the lower end of the main fence that is not grounded to the floor, which is often used for non-foldable tables. It is used. As a leg device of a chair, a device in which four or five branches are branched from the lower end of a main fence that does not reach the floor is often used. Even if the top plate is a circular table, four branches are branched from the lower end of the main fence that does not reach the floor.

  In the case of a foldable table leg device, the main rod and branch rod may be manufactured as an integral part by, for example, aluminum die casting, but in this case the mold becomes very large, It is widely practiced to manufacture the two separately and fix them with screws. As an example, in Patent Document 1, an extension portion that overlaps the main rod is provided at the upper end of the branch rod, and the upper portion of the main rod is fitted into a recess formed in the extension portion, and both are fixed with screws.

Japanese Patent No. 4948872 Japanese Patent No. 5150918 Design Registration No. 1475020

Although high strength can be ensured by fitting the main rod and the branch rod as in Patent Document 1, the appearance may be deteriorated when the fitting portions of both are exposed. In addition , although steel products have high strength even though they are thin, they are suitable as materials for leg devices. However, in the fitting method as in Patent Document 1, steel pipes and sheet metal processed products are used for both the main rod and branch rod. It is difficult to use an aluminum die-cast product for both the main and branch shoots, and there is a problem that the characteristics of the steel product cannot be fully utilized.

  The present invention has been made to improve the current situation.

The present invention includes various configurations, examples of which are specified in each claim. Leg system of furniture according to these first aspect of the present invention, has "a main rod of the upper and lower longitudinal rod-shaped object supporting structure is attached, and a branch rod of rod-like towards the floor branched from said main rod The upper end of the branch ridge is overlaid on the outer periphery of the main ridge and fixed with screws,
And it has placed the reinforcing bracket to the overlapping portion of the branch rods and Shu杆, before Symbol reinforcing brackets are arranged in a state that can not be visually recognized from the outside is sandwiched between the main rod and Eda杆"
In the basic configuration
The reinforcing metal fitting is fixed to one hook with a screw, and is engaged with the other hook so as not to be laterally displaced and to be removed.

  According to a second aspect of the present invention, in the first aspect, the main fence is inclined with respect to the vertical line, and the lower end extends to the floor, while the branch pole is opposite to the main line with respect to the vertical line. The upper and lower ends of the branch fence are provided with a vertically long joint that overlaps the outer surface of the main fence. It is overlapped and fixed to the main fence.

The invention of claim 3 has the same basic configuration as that of claim 1,
“While the main rod is a hollow structure or a groove structure made of steel, the branch rod is made of aluminum or resin, and the reinforcing bracket is fixed to the branch rod, An upward hook-like engagement claw protruding on the main rod side is provided, and the engagement claw is fitted in an engagement hole provided in the main rod. ''
It is the composition.

In the present invention, since the fastening between the main rod and the branch rod is reinforced by the reinforcing metal fitting, it is possible to improve the aesthetics by reducing the junction area of the branch rod to the main rod as much as possible without reducing the fastening strength. In addition, since the present invention does not require the fitting structure as in Patent Document 1, the surface of the main rod may be flat. Therefore, as shown in claim 3 , the main rod or the branch rod is made of steel. The product can be easily used, and as a result, the strength of the leg device can be further improved.

According to the second aspect, the branch ridge protrudes from the outer surface of the main fence. Therefore, it is suitable as a leg device of a foldable table in which the leg devices arranged at the front and rear can be fitted to each other. The reinforcing bracket can be fixed to the main rod and the branch rod with screws, but in the invention of claim 1 of the present application, a method is adopted in which one side is fixed with screws and the other is engaged. And, since the postures of both can be temporarily held by fitting the reinforcing metal fitting into one of the collars, there is an advantage that the assembly becomes easy.

Further, in the invention of claim 1 of the present application , since the main rod and the branch rod are engaged with each other so as not to be disengaged in the left-right direction, there is an accident that, for example, the screw fastening the main rod and the branch rod is broken. Even so, it is possible to maintain the engagement relationship between the main rod and the branch rod. For this reason, even in the unlikely event, the table can be prevented from being crushed and deformed, and safety can be ensured.

When the structure of claim 3 is adopted, the main rod is made of a steel material and a simple shape, while the branch rod can be made a sophisticated design using an aluminum or resin molded product. the furuncle one high support strength is improved and aesthetics of the whole of the leg system can be secured.

It is a perspective view of the table which concerns on embodiment, (A) is what was seen from the top, (B) is what was seen from the bottom. (A) is a perspective view of a main body frame, (B) is a perspective view in the state which abbreviate | omitted the top plate. (A) is a separation perspective view of a leg device and a side frame, and (B) is a separation perspective view showing the structure of a branch branch. (A) (B) is the isolation | separation perspective view of a main fence and a branch fence. (A) is a separated perspective view of a branch fence and a reinforcing bracket, (B) is a perspective view of the branch fence in a state where the bracket is fixed. (A) is a side view in the use state of a table, (B) is a side view in the folded state, (C) is a separated side view for explaining the function of the reinforcing metal fitting.

(1). Outline of Table Next, an embodiment of the present invention will be described with reference to the drawings. First, an outline of the table will be described. As shown in FIGS. 1 and 2, the table includes left and right leg devices 1 and a top plate 2 disposed on the left and right leg devices 1, and a curtain plate 3 disposed below the top plate 2 in front of the leg device 1. It has.

The leg device 1 is substantially in a human character shape with a main body 5 having a hollow rectangular structure with a support block 4 attached to the upper end, and a branch bar 6 connected to the upper and lower middle parts thereof. A caster 7 is provided at the lower end of the basket 6. The main shaft 5 is shifted rearward from the lower end toward the upper end, and is in a backward inclined posture and a linear posture in a side view. On the other hand, the branch ridge 6 is in a posture of lowering downward and is located behind the main fence 5. Details of the leg device 1 will be described later.

The upper ends of the left and right main rods 5 are connected by a hollow rectangular horizontal stay 8. Therefore, the left and right leg devices 1 and the horizontally long stay 8 constitute a main body frame. The support block 4 provided at the upper end of the main lever 5, the front and rear longitudinal side frames 9 are connected with left and right horizontal pin (bolt) 10 so as to vertically pivot about the longitudinal middle portion of its The front end portion and the rear end portion of the left and right side frames 9 are connected by a hollow square joint bar 11.

  The side frame 9 and the joint bar 11 constitute a frame for supporting the top plate 2, and the top plate 2 is fastened to the site frame 9 and the joint bar 11 with screws (not shown). The top plate 2 is fitted with a demon nut 12 (see FIG. 2B) to which a screw is screwed.

  A lever 13 for folding operation is rotatably attached to the left and right side frames 9. The left and right levers 13 are interlocked. When the lever 13 is tilted downward (or raised upward), the lock mechanism disposed inside the side frame 9 is unlocked, and the table can be folded. In order to interlock the left and right lock mechanisms, a plurality of interlocking rods 14 are arranged between the left and right side frames 9.

The curtain plate 3 is made of a metal plate such as steel (may be wooden), and a left and right horizontally long upper duct 15 is fixed to the upper end of the curtain plate 3 and the upper duct 15 is pivoted back and forth via a suspension device 16 on the top plate 2. It is connected freely. Further, the left and right ends of the curtain plate 3, Shu杆above under longitudinal and side duct 17 which opens rearward is fixed, the left and right side portions of the lower side portion of the curtain plate 3, the link 18 5 It is connected to the pivotable.

  In a state where the top plate 2 is tilted to the horizontal position and used as a table, as clearly shown in FIG. 1B, the curtain plate 3 is in a vertical posture below the front portion of the top plate 2, and the table is folded. In the state, as clearly shown in FIG. 6B, the top plate 2 and the curtain plate 3 are in a forward inclined posture parallel to the main rod 6 while the front ends thereof are down.

(2) Details of Leg Device Next, details of the leg device 1 will be described with reference to other drawings. The main shaft 5 uses a rectangular steel pipe (or a sheet-metal processed product of a steel plate) having a rectangular cross section that is long in the front-rear direction in plan view, and the above-described support block 4 is fitted and attached to the upper end thereof. A bracket 20 (see FIG. 2A) for fixing the above-described horizontally long stay 8 is provided on the upper inner side surface.

  The branch arm 6 is an aluminum die-cast product, and an upper and lower longitudinal joint 21 that overlaps the outer surface of the main shaft 5 is integrally provided at the upper end. Therefore, the upper part of the branch ridge 6 is substantially T-shaped. Although it is possible to make it L-shaped in a side view projecting only on one of the upper and lower sides, adopting a T-shape as in the embodiment not only can improve rigidity because it is strong against torsion. In terms of appearance, a strong image is preferable because it is high. In the embodiment, the upward projecting dimension is increased, but it is also possible to project upward and downward evenly or to project large downward.

  For example, as shown in FIG. 3, a downward vertical portion 22 is provided at the lower end of the branch branch 6, and the support shaft 23 of the caster 7 is fitted into the downward vertical portion 22. A bracket 24 protruding upward is provided on the support shaft 23 of the caster 7, and the bracket 24 is fixed to the branch bar 6 with screws 25.

  Moreover, the part between the junction part 21 and the downward vertical part 22 among the branch ridges 6 is a cage | basket shape which has a downward opening groove | channel, and the resin-made shock absorbing material 27 is provided in the lower end edge of the side plate 6a located in the left-right inner side. Is fixed with screws (not shown). The buffer material 27 is for preventing damage when the main table 5 of the rear table collides when the tables are folded together as shown in FIG.

As shown in FIGS. 4 and 5, the joint portion 21 of the branch ridge 6 basically has a hollow structure that opens toward the main ridge 5, and has a longitudinal direction, a lateral direction, and an oblique direction inside thereof. An extending reinforcing rib 28 is formed. Then, a steel plate reinforcing bracket 29 having a vertically long rectangular shape is fixed to the center portion inside the joint portion 21 with a sub screw 30, and a pair of left and right engaging claws 31 provided on the outer plate 29a of the reinforcing bracket 29 are provided. The main rod 5 is fitted into an engagement hole 32 provided in the main rod 5, and the main rod 5 and the joint 21 are fastened by two main screws 33 positioned above and below the reinforcing metal fitting 29. Therefore, the reinforcing metal fitting 29 is arranged in a state sandwiched between the overlapping portions of the main rod 5 and the joint portion 21 and cannot be visually recognized from the outside.

  The joint portion 21 is formed with a notch 34 in the vertical and horizontal reinforcing ribs 28 to form a fitting portion of the reinforcing metal fitting 29, and the auxiliary screw 30 is screwed into a place where the vertical and horizontal reinforcing ribs 28 intersect. A tap hole 35 is opened. In addition, the engaging claws 31 are provided on the left and right, respectively, and have an upward hook shape. On the other hand, as shown in FIG. 5, the engagement hole 32 of the main rod 5 has a slit-like shape that is long in the vertical direction.

  The main screw 33 is screwed into a tap hole 35 provided at the intersection of the vertical and horizontal reinforcing ribs 28 of the joint 21 in the branch rod 6. Therefore, the outer plate 5a of the main rod 5 is provided with a screw hole 36 through which the shaft of the main screw 33 passes, and the inner plate 5b of the main rod 5 is provided with a relief hole 38 through which the head of the main screw 33 passes. (See FIG. 3A).

  As shown in FIG. 5, the laterally long positioning projections 39 are provided at two locations, just above and below the reinforcing bracket 29, in the joint portion 21 of the branch fence 6, while on the outside of the main rod 5 as shown in FIG. 4. The plate 5a has a positioning hole 40 into which the positioning projection 39 is fitted.

(3) Summary In the above configuration, the main rod 5 and the branch rod 6 are fixed by fastening the main screw 33, but since the reinforcing metal fitting 29 is interposed between them, the joint 21 High strength can be ensured while making the vertical length as short as possible.

  Now, in the embodiment, an inexpensive and high-strength square steel pipe is used for the main shaft 5, but a downward load acts on the table as shown by the white arrow in FIG. Receives external force to fall back. For this reason, if the branch rod 6 is simply overlapped with the main rod 5 and fastened with the main screw 33, a slip between the main rod 5 and the branch rod 6 occurs, and the fastening strength becomes extremely weak. When the main shaft 5 is made of steel pipe or sheet metal, it is difficult to actually use the fitting structure as in Patent Document 1.

  In this respect, in the present embodiment, the reinforcing metal fitting 29 is fitted into the joint portion 21 of the branch arm 6 and is held so as not to be displaced in the vertical and horizontal directions and to be unrotatable around the axis of the auxiliary screw 30. On the other hand, since the engaging claw 31 is fitted in the slit-shaped engaging hole 32, the main rod 5 and the branch rod 6 are held in a state in which the relative posture in the side view is impossible via the reinforcing metal fitting 29. Has been. For this reason, the fall of the main rod 5 can be prevented firmly, and the leg apparatus 1 can be made to have high support strength.

  Moreover, when the fitting structure of the positioning protrusion 39 and the positioning hole 40 is employed as in the present embodiment, the change in the relative posture between the main rod 5 and the branch rod 6 can be prevented more accurately, and the leg device 1 can be prevented. Support strength can be further improved.

  For example, even if an accident such as breakage of the main screw 33 occurs, the state in which the main rod 5 and the branch rod 6 are joined by the reinforcing metal fitting 29 is maintained, and the positioning protrusion 39 and the positioning hole 40 are fitted together. Since the change of the relative posture of both the arms 5 and 6 is also prevented, the leg device 1 is totally collapsed and the top plate 2 does not fall. For this reason, high safety can be ensured even if an unexpected situation occurs.

In this case, the main rod 5, the load on the top plate 2, but exhibits a tendency to rearward tilting by black arrow as shown in Figure 6 (A), engaging the reinforcing brackets 29 as in the embodiment If the joint claw 31 is set in an upward hook-like form, the fall of the main hook 5 acts to promote the fitting relationship between the main hook 5 and the engagement claw 31, Since the positioning hole 40 is held in the fitted state, it is more preferable in terms of ensuring safety.

  The present invention can be embodied in various ways other than the above-described embodiment. For example, the application target is not limited to a folding table, and can be applied to various types of furniture such as a non-folding table or chair, a stand with a top plate, and a clothes rack. As can be easily understood from the example of the chair legs, the main rod does not need to be grounded to the floor, and only a plurality of branch rods may be grounded.

  The form and arrangement number of the reinforcing metal fittings can be arbitrarily set as necessary. For example, the engagement claw may have only one L shape or T shape in plan view. When high strength is required, a plurality of reinforcing metal fittings can be arranged side by side in the vertical direction. A combination of a screw (bolt) and a nut may be employed without forming the tap hole in the main rod or branch rod.

  The present invention can be widely applied to leg devices such as a folding table. Therefore, it can be used industrially.

1 Leg device 2 Top plate 5 Main foot (main foot)
6 Edema (branch legs)
7 Casters 21 Junction Joint 28 Reinforcement Rib 29 Reinforcement Bracket 30 Sub Screw 31 Engagement Claw 32 Engagement Hole 33 Main Screw 39 Positioning Projection 40 Positioning Hole

Claims (3)

It has a vertically long bar-shaped main rod to which a supported object is attached, and a rod-shaped branch rod branched from the main rod toward the floor, and the upper end of the branch rod is overlapped on the outer periphery of the main rod Are fixed with screws,
And it has placed the reinforcing bracket to the overlapping portion of the branch rods and Shu杆, before Symbol reinforcing brackets are arranged in a state that can not be visually recognized from the outside is sandwiched between the main rod and Eda杆Configuration,
The reinforcing metal fitting is fixed to one hook with a screw and is engaged with the other hook so as not to be laterally displaced and to be removed.
Furniture leg equipment. The main rod is inclined with respect to the vertical line, and the lower end extends to the floor, while the branch rod is also inclined with respect to the vertical line in a direction opposite to the main rod. It has a human character shape, and has an upper and lower longitudinal joint that overlaps the outer surface of the main fence at the upper end of the branch fence, and this joint is overlapped and fixed to the main fence.
The furniture leg device according to claim 1. It has a vertically long bar-shaped main rod to which a supported object is attached, and a rod-shaped branch rod branched from the main rod toward the floor, and the upper end of the branch rod is overlapped on the outer periphery of the main rod Are fixed with screws,
And the reinforcement metal fitting is arrange | positioned in the superposition | polymerization part of the said branch fence and the main fence, The said reinforcement metal fitting is arrange | positioned between the said main fence and a branch fence, and the structure arrange | positioned in the state which cannot be visually recognized from the outer side Because
The main rod is a steel hollow structure or groove-shaped structure, while the branch rod is made of aluminum or resin, and the reinforcing bracket is fixed to the branch rod, and the reinforcing bracket is attached to the main bracket. An upward hook-like engagement claw protruding on the side of the hook is provided, and the engagement hook is fitted in an engagement hole provided in the main hook.
Leg system of furniture.

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