WO2014161153A1

WO2014161153A1 - Durable foldable supporting apparatus

Info

Publication number: WO2014161153A1
Application number: PCT/CN2013/073648
Authority: WO
Inventors: 唐敏
Original assignee: Tang Min
Priority date: 2013-04-02
Filing date: 2013-04-02
Publication date: 2014-10-09

Abstract

A foldable supporting apparatus. The supporting apparatus comprises at least two groups of supporting units (110, 120), one connecting unit, and two locating mechanisms. Each supporting unit (110, 120) comprises a first supporting pipe (111, 121) and a second supporting pipe (112, 122) capable of being disposed in a crossed mode. The connecting unit is separately connected rotatably to the two supporting units (110, 120). Each locating mechanism comprises a locating piece (141, 142) and a locating portion (151, 152) fitting the locating piece (141, 142). The locating piece (141, 142) is disposed on the second supporting pipe (112, 122). The locating portion (151, 152) is disposed on the first supporting pipe (111, 121). The first supporting pipe (111, 121) slidably penetrates in the locating piece (141, 142). In this way, the first supporting pipe (111, 121) slidably fits the second supporting pipe (112, 122) by using the locating mechanisms; when in use, the first supporting pipe (111, 121) and the locating piece (141, 142) on the second supporting pipe (112, 122) are located by using the locating portion (151, 152). Compared with the prior art in which a rivet or a bolt is used for locking a supporting pipe, a stress contact surface is enlarged, the firmness of the supporting pipe is ensured, and the supporting pipe is unlikely to be damaged. The supporting apparatus is suitable for a table, a stool, a chair, an article hanging shelf, a ladder, a goods shelf, or the like.

Description

Durable foldable support

Technical field

The invention relates to the technical field of support tools such as a table, a stool, a chair, a hanging rack, a ladder or a shelf, and more particularly to a foldable support device which is not easily damaged.

Background technique

Tables, stools, chairs, hanging racks, ladders or shelves are all common and essential daily necessities in people's daily lives. The so-called "supporting implement" proposed by the present invention is such a product which mainly provides support for the human body. The difference between the so-called stool and the chair of the present invention is whether there is a backrest or a seat back. With the improvement of the quality of life, people need to support the above-mentioned supporting tools, but also require a certain portability and small and easy to store characteristics, therefore, folding tables, folding stools, folding chairs, folding racks and folding Products such as ladders came into being.

The foldable support device provided by the prior art, such as a folding chair, includes a seat cushion and a seat back. The bottom of the seat cushion is provided with two pairs of intersecting leg groups, and the cross leg group is provided with a first leg and a second leg. A bolt or rivet is connected between the first leg and the second leg and between the first leg and the seat cushion. The supporting tool provided by the prior art can realize the supporting function of the common product, and can also be folded when not in use, and is convenient to carry or store.

In order to improve the durability of the product, the prior art generally uses metal pipes to manufacture the cross leg group. However, in the support tool provided by the prior art, the movable connection between the metal pipes is still conventionally riveted or bolted. Waiting for the way. This means that the metal pipe is first perforated, and then the rivet or bolt is inserted. After the hole is punched, the strength of the pipe is greatly reduced. When the user is too heavy or frequently shakes, the bolt or the rivet is loose or broken. The durability of the entire product is still not high.

technical problem

The technical problem to be solved by the present invention is to provide a support tool which is not only foldable but also not easily damaged and is very durable.

Technical solution

In order to solve the above technical problems, the technical solution adopted by the present invention is:

Providing a durable foldable support device comprising at least two sets of support units, a connecting unit and two positioning mechanisms, the support unit comprising a first support tube and a second support tube that are cross-disposed, The connecting unit is respectively rotatably connected to the two supporting units, and the positioning mechanism comprises a positioning member and a positioning portion matched with the positioning member, the positioning member is disposed on the second supporting tube, and the positioning portion is disposed at the The first support tube is slidably disposed in the positioning member on a support tube.

The positioning member is U-shaped, and the open end is fixed on the second support tube. The positioning portion includes a first protrusion and a second protrusion, and the first support tube is disposed in the U-shaped opening of the positioning member. And positioning by the positioning member and the first protrusion and the second protrusion.

The first protrusion and the second protrusion are disposed on two sides of the first support tube, the positioning member is disposed between the first protrusion and the second protrusion, and the positioning member is movable with the first protrusion Positioned in cooperation with the second protrusion.

The first protrusion and the second protrusion are formed by welding or directly by surface stamping.

As a further improvement, a reinforcing block is disposed around the connecting portion where the two second supporting tubes are connected to the positioning member. This makes the joint stronger and more durable. The reinforcing block is formed by extending an end of the positioning member downward. Reduced parts, lower processing costs and better overall.

As a further improvement, a reinforcing strip is further disposed around the positioning portion on the first support tube. It can effectively prevent loose or damaged around the bump due to excessive force.

The first protrusion is located below the second protrusion, and the reinforcing strip is formed to extend downward from the first protrusion.

As a further improvement, the connecting ends of the connecting units are respectively embedded in the corresponding connecting ends of the two supporting units, and the connecting ends of the two supporting units are also embedded in the connecting ends of the corresponding connecting units. In this way, the connecting end of the connecting unit is directly in contact with the connecting end of the supporting unit in an embedded manner, and the rotating contact function is realized, the force-receiving surface is significantly increased, and there is no need to punch the connecting end as in the prior art. Therefore, the problem of the strength reduction of the connecting end is effectively avoided, thereby ensuring the firmness of the connection position of the connecting unit and the two supporting units, and is not easily damaged during use.

The connecting end of the supporting unit for inserting the connection is provided with a radial hole, and the connecting end of the connecting unit for inserting the connection is provided with a mounting hole, and the connecting end of the supporting unit is embedded in the mounting hole The connecting end of the connecting unit is rotatably embedded in the radial hole.

The connecting end of the connecting unit for inserting the connection is provided with a cylinder, the radial hole is matched with the corresponding cylinder, and the diameter of the cylinder at the connecting end of the connecting unit is embedded in the connecting end of the supporting unit Into the hole.

The radial hole is formed by punching the connecting end of the supporting unit for the embedded connection into a U-shaped shape and then pressing and joining the open end.

The support device is a stool, a chair, a table, a hanging rack or a ladder.

The features of the present invention will be more readily understood and understood by the following description of the appended claims.

Beneficial effect

After adopting such a structure, the first support tube is slidably engaged with the second support tube by the positioning mechanism. In use, the first support tube is positioned by the positioning portion interacting with the positioning member on the second support tube, and is relatively existing. The technique of locking the support tube by means of rivets or bolts significantly increases the force contact surface, and does not need to punch holes in the support tube as in the prior art, thereby effectively avoiding the problem of structural damage and strength reduction, thereby ensuring the problem. The robustness of the support tube is not easily damaged during use.

DRAWINGS

1 is a partial structural schematic view of a first embodiment of the present invention;

Figure 2 is a partial enlarged view of the positioning portion and the positioning member of Figure 1 at different viewing angles;

Figure 3 is an enlarged schematic view of the connecting block of Figure 1;

Figure 4 is a partial enlarged view of the embedded connection end of Figure 1;

Figure 5 is a schematic view of the processing of the embedded connection end of Figure 1;

Figure 6 is a schematic structural view of a first embodiment provided by the present invention;

Figure 7 is a schematic view of the stool shown in Figure 6 in a collapsed state;

Figure 8 is a schematic view showing the structure of the chair further improved to the first embodiment;

Figure 9 is a schematic view showing the structure of the first embodiment further improved to a table;

Figure 10 is a schematic view showing the table shown in Figure 9 in a collapsed state;

Figure 11 is a schematic structural view of a second embodiment provided by the present invention;

Figure 12 is a schematic structural view of a third embodiment provided by the present invention;

Figure 13 is a schematic view showing the hanging frame of Figure 12 in a collapsed state;

Figure 14 is a schematic structural view of a fourth embodiment provided by the present invention;

Figure 15 is a schematic view showing the structure of a fifth embodiment provided by the present invention.

Embodiments of the invention

In order to make the technical problems, technical solutions, and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A first embodiment of the collapsible support device of the present invention, as shown in Figs. 1 to 10 (only the support structure portion is shown in Fig. 1 and the structure of a portion of the connection end is in a state of processing), is a folding stool 100. As shown, the folding chair 100 includes two supporting

units

110, 120, a connecting unit and two positioning mechanisms, and the supporting

units

110, 120 include first supporting

tubes

111, 121 and The two

support tubes

112 and 122 are respectively rotatably connected to the two

support units

110 and 120. In this embodiment, the first and second support pipes are made of a metal material, preferably a steel pipe, and may be various cross sections such as a round pipe or a square pipe. A fixed

shaft

113, 123 is further disposed between the two

first support tubes

111, 121 and between the two

second support tubes

112, 122, which makes the folding chair more stable in use.

In more detail, please refer to FIG. 2 (only the part is shown), the positioning mechanism includes a

positioning member

141, 142 and

positioning portions

151, 152 matching the positioning member, that is, the positioning portion 151, The structure of the 152 is designed according to the position and structure of the

positioning members

141, 142. In the state shown in Figs. 1, 2, the

positioning members

141, 142 just act in a relatively fixed state with the

positioning portions

151, 152. The

positioning members

141 and 142 are disposed on the second supporting

tubes

112 and 122. The positioning

portions

151 and 152 are disposed on the first supporting

tubes

111 and 121, and the first supporting

tubes

111 and 121 are slidably disposed. In the

positioning members

141, 142. In the present invention, the names of the first and second support tubes themselves do not include any positional relationship, but as a preferred embodiment, as shown, the

first support tubes

111, 121 are located on the inner side, and the

second support tubes

112, 122 They are all located on the outside. After adopting such a structure, the first support tube is slidably engaged with the second support tube by the positioning mechanism. In use, the first support tube is positioned by the positioning portion interacting with the positioning member on the second support tube, and is relatively existing. The technique of locking the support tube by means of rivets or bolts significantly increases the force contact surface, and does not need to punch holes in the support tube as in the prior art, thereby effectively avoiding the problem of structural damage and strength reduction, thereby ensuring the problem. The robustness of the support tube is not easily damaged during use.

As a preferred solution: as shown in FIG. 1 and FIG. 2 (only part of FIG. 2 is shown), and also referring to FIG. 6 simultaneously, the

positioning members

141 and 142 are a metal member having a U shape, and the open end is fixed to the second support tube 112. And 122, specifically fixed by welding; the

positioning portions

151, 152 include

first protrusions

1511, 1521 and second protrusions 1512, 1522 (see the second protrusion 1522 see Figure 6), the first support tube 111 The 121s are respectively disposed in the U-shaped ports of the

corresponding positioning members

141 and 142, and can be positioned by the mutual cooperation of the

positioning members

141 and 142 and the

first protrusions

1511 and 1521 and the

second protrusions

1512 and 1522. Further, in this embodiment, the

first protrusions

1511, 1521 and the

second protrusions

1512, 1522 are respectively disposed on two sides of the

first support tube

111, 121, and the

positioning members

141, 142 are disposed on the first protrusion. Between 1511, 1521 and the

second protrusions

1512, 1522, and the

positioning members

141, 142 can be coordinated with the

first protrusions

1511, 1521 and the

second protrusions

1512, 1522. That is, referring mainly to FIG. 2, in the state of use, the

first support tubes

111, 121 are slid into position, and the

first protrusions

1511, 1521 and the

second protrusions

1512, 1522 thereon are respectively capable of correspondingly The two sides of the

U-shaped positioning members

141, 142 cooperate to prevent the

first support tubes

111, 121 from sliding up or down when a person sits down.

In more detail, the

first protrusions

1511, 1521 and the

second protrusions

1512, 1522 can be processed by the prior art. In this embodiment, the surface of the

first support tubes

111, 121 can be soldered by soldering. The protrusion can be a bump, and the advantage is that the processing process is very simple, but the work time is more; the direct stamping method can also be selected, and a protrusion is formed on the surface of the

first support tubes

111 and 121, and the shape can be It is a bump or a boss, etc. This method is suitable for automated machining, but the machining process is more complicated. As shown in FIG. 2, in the present embodiment, the

first protrusions

1511, 1521 are welded, and the

second protrusions

1512, 1522 are stamped.

As a further improvement, the two

second support tubes

112, 122 are provided with reinforcing

blocks

1411, 1421 around the connecting portion connecting the

positioning members

141, 142. The shape and structure of the reinforcing

blocks

1411, 1421 can be freely selected according to the prior art, thereby making the connecting portion stronger and more durable. Preferably, the reinforcing

blocks

1411 and 1421 in this embodiment are formed by extending the end portion of the positioning member downward, and as shown in the drawing, one side may be extended, but the two sides are simultaneously extended and strengthened. This solution reduces parts, lowers processing costs and is more holistic.

As a further improvement, reinforcing

strips

1513, 1523 may be disposed around the

first protrusions

1511, 1521 and the

second protrusions

1512, 1522 on the

first support tubes

111, 121, and may be generally disposed by welding. The shape and structure of the reinforcing

strips

1513, 1523 can be freely selected according to the prior art. As a preferred embodiment, the reinforcing

strips

1513, 1523 are disposed below the

first projections

1511, 1521 or on the other side of the first support tube. Below, more preferably, as shown in FIG. 2, the reinforcing

strips

1513, 1523 may be formed directly downwardly from the first protrusions 1511, 1521 (only one of the first protrusions is shown in FIG. 2), that is, The front ends of the reinforcing

strips

1513 and 1523 are used as the

first projections

1511 and 1521, which not only can effectively prevent looseness or damage due to excessive force around the projections, but also have the advantage of simple processing.

Figure 11 shows a second embodiment of the collapsible support of the present invention as a folding stool 200. The folding stool comprises two supporting

units

210, 220, a connecting unit and two positioning mechanisms, and the supporting

units

210, 220 comprise first supporting

tubes

211, 221 and second supporting

tubes

212, 222 which are arranged at an intersection. The positioning mechanism includes positioning

members

241, 242 and matching positioning portions (not shown). Compared with the folding stool of the first embodiment, the difference is that the

first support tubes

211, 121 are both located outside, and the

second support tubes

212, 222 are both located inside, and the

positioning members

241, 242 are fixed to the second support on the inner side. On the

tubes

212 and 222, the

first support tubes

211 and 121 are bored in the

positioning members

241 and 242 from the outside.

A third embodiment of the foldable support device of the present invention shown in Figures 12 and 13 is a folding hanger 300. The folding rack 300 includes at least two sets of supporting units, a connecting unit and two positioning mechanisms. The positioning mechanism includes a

positioning member

331, 332 and a positioning portion (not shown) matching the positioning member. The unit includes

first support tubes

311, 321 and

second support tubes

312, 322 that are cross-configurable. Compared with the first embodiment, the difference is that the connecting unit includes two connecting

rods

341, 342, and the connecting

rods

341, 342 are respectively connected to the top ends of the first supporting

tubes

311, 321 and the second supporting

tubes

321, 322. When not in use, the

first support tubes

311, 321 can be pushed to a state as shown in FIG. Compared with the prior art, the hanging rack is durable and the two connecting

rods

331, 332 can be opened and fixed in the state shown in FIG. 12 without any other components being fixed.

A fourth embodiment of the collapsible support of the present invention shown in Figure 14 is a folding ladder 400. The folding ladder 400 includes at least two sets of supporting units, a connecting unit and two positioning mechanisms. The positioning mechanism includes a

positioning member

431, 432 and a positioning portion (not shown) matching the positioning member, and the supporting unit includes The

first support tubes

411, 421 and the

second support tubes

412, 422 are cross-disposed. Compared with the first embodiment, the difference is that the

first support tubes

411, 421 are shorter than the

second support tubes

412, 422, and the plurality of connecting rods 441 are equidistantly connected between the

second support tubes

412, 422. Form a step that is stepped on when climbing.

A fifth embodiment of the foldable support device of the present invention shown in Figure 15 is a folded shelf 500. The folding shelf 500 includes at least two sets of supporting units, a connecting unit and two positioning mechanisms. The positioning mechanism includes a

positioning member

531, 532 and a positioning portion (not shown) matching the positioning member, and the supporting unit includes The

first support tubes

511 and 521 and the

second support tubes

512 and 522 which are disposed at the same time, the

first support tubes

511 and 521 are shorter than the

second support tubes

512 and 522, and the

second support tubes

512 and 522 are connected to each other. An equally spaced connecting rod 541. Compared with the fourth embodiment, the difference is that the connecting rod 541 is further provided with a support plate 542 on which the goods can be placed.

As a further improvement of the first embodiment, as shown in FIG. 1, the foregoing connecting unit includes two connecting

blocks

131, 132, and the two connecting ends of the connecting

blocks

131, 132 are respectively embedded in the first supporting

tubes

111, 121 and the second The connecting ends of the

support tubes

112, 122. The use of two connecting blocks as the connecting unit can effectively save material, and the seat cushion 160 can be fixed to the two connecting

blocks

131, 132 as needed, as a preferred embodiment of the complete folding stool 100a shown in FIG. When not in use, the

first support tubes

111, 121 can be pushed upward, the connecting

blocks

131, 132 are rotated around one end, and the seat cushion 160 is rotated accordingly, and finally collapsed to the state shown in FIG.

Referring to FIG. 1, the connecting ends 1311, 1312, 1321, and 1322 of the connecting unit are respectively embedded in the corresponding connecting ends 1111, 1112, 1211, and 1221 of the two supporting

units

110 and 120, and the connecting ends of the two supporting units are also embedded in the corresponding connecting units. Connection end. In this way, the connecting end of the connecting unit is directly in contact with the connecting end of the supporting unit in an embedded manner, and the rotating contact function is realized, the force-receiving surface is significantly increased, and there is no need to punch the connecting end as in the prior art. Therefore, the problem of the strength reduction of the connecting end is effectively avoided, thereby ensuring the firmness of the connection position of the connecting unit and the two supporting units, and is not easily damaged during use.

In more detail, the two connecting ends of the aforementioned connecting block can be embedded into the connecting ends of the first and second supporting tubes by various conventional techniques. As a preferred embodiment, the present embodiment provides a specific solution: as shown in FIGS. 3, 4, and 5 (only a partial structure is shown), the connecting end 1111 of the supporting unit 110 for inserting the connection has a radial hole 1112 ( a hole perpendicular to the rotation axis of the support tube, that is, the first and second

support tube tips

1111, 1121, 1211, and 1221 of the two

support units

110, 120 are provided with radial holes, as shown in FIGS. A partially enlarged view of a connection between the first support tube 111 of one of the support units 110 and the connection block 131 of the connection unit. As shown in FIG. 3, the connecting end of the connecting block 131 in the connecting unit is provided with a mounting

hole

1315, 1316, that is, a mounting hole is formed at each end of the connecting block, and the connecting end of the connecting block 131 passes through the mounting. A hole 1311 is rotatably embedded in the radial bore 1112.

In more detail, comparing the FIGS. 4 and 5, the aforementioned radial holes can be processed in such a manner that the connecting end 1111 for inserting the connection in the supporting unit 110, that is, the top end of the first and second supporting tubes is first punched. Open a U-shaped opening, as shown in Figure 5 (only one of the support tubes 111 is shown in the figure); then press the open end to form an O-shape, and then close the opening by welding, etc., such as The state shown in Fig. 4 (only one of the support tubes 111 is shown in the drawing).

In order to allow the connecting block to make full use of the space in the radial bore to achieve a rotational fit, the connecting unit, ie the two connecting

blocks

131, 132 in the figure, are used to embed the radial bore 1112 (only shown in Figures 4, 5) The

posts

1311, 1312, 1321, 1322 are further provided with a

cylinder

1313, 1314, and the space in the radial bore 1112 (only shown in Figures 4, 5) matches the dimensions of the

cylinders

1313, 1314. As shown in Figs. 4 and 5, the cylinder is preferably a cylinder, but a hexagonal cylinder or an octagonal cylinder may also be used. Thus, at the time of assembly, after the top end 1111 of the support tube 111 is punched out, the cylindrical portion 13 of the connecting block can be fitted into the radial hole by the mounting hole 1315, and the tip end of the support tube can be closed.

This embodiment can also be applied as a folding chair, such as the folding chair 100b shown in FIG. 8, which is different from the above preferred embodiment in that the connecting unit includes a connecting plate 133 on the two second supporting

tubes

112, 122. A connecting shaft (not shown) is disposed, the connecting unit includes a connecting plate 133, one side of the connecting plate 133 is rotatably entirely sleeved on the connecting shaft, and the two connecting ends on the other side of the parallel side are respectively Inserting the connecting ends of the two first supporting

tubes

111, 121, the two second supporting

tubes

112, 122 may extend upward, and a connecting member capable of forming a backrest is disposed laterally between the two second supporting

tubes

112, 122, such as As shown in the figure, two connecting pipes 171 can be fixed at the upper middle portion, that is, a backrest can be formed together with the two second supporting

pipes

112, 122. In this way, the connecting plate 133 can be directly used as a seat cushion, and of course, the seat cushion can be further mounted on the connecting plate as needed.

This embodiment can also be applied as a folding table. Referring to the folding table 100c shown in FIGS. 10 and 11, the difference is that the folding table 100c includes four sets of supporting

units

110, 120, 110', 120' and a connecting unit, the positioning mechanism comprises four

positioning members

141, 142, 141', 142' and a positioning portion matched with the positioning member, the connecting unit comprises four connecting

blocks

131, 132, 131', 132', The two connecting ends of the connecting

blocks

131, 132, 131', 132' are respectively embedded in the connecting ends of the first supporting

tubes

111, 121, 111', 121' and the second supporting

tubes

112, 122, 112', 122'. When not in use, for the convenience of storage, the

first support tubes

111, 121, 111', 121' can be pushed and the rotation of the connection unit can be matched to finally collapse to the state shown in Fig. 11.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A durable foldable support device comprising at least two sets of support units, a connecting unit and two positioning mechanisms, the support unit comprising a first support tube and a second support tube that are cross-disposed, the connection The unit is rotatably connected to the two supporting units, respectively, wherein the positioning mechanism comprises a positioning member and a positioning portion matched with the positioning member, the positioning member is disposed on the second supporting tube, and the positioning portion is disposed on the second supporting tube The first support tube is slidably disposed in the positioning member.
The support device according to claim 1, wherein the positioning member has a U shape, and the open end is fixed to the second support tube, and the positioning portion includes a first protrusion and a second protrusion, the first A support tube is disposed in the U-shaped opening of the positioning member, and is positionably engaged by the positioning member and the first protrusion and the second protrusion.
The support device according to claim 2, wherein the first protrusion and the second protrusion are disposed on both sides of the first support tube, and the positioning member is disposed on the first protrusion and the second Between the protrusions, and the positioning member can be engaged with the first protrusion and the second protrusion.
A support according to claim 3, wherein said first projections and said second projections are formed by welding or by direct stamping of the surface.
The support tool according to claim 2 or 3, wherein a reinforcing block is arranged around the connecting portion where the two second supporting tubes are connected to the positioning member.
A support according to claim 5, wherein said reinforcing block is formed by extending an end portion of said positioning member downward.
The support tool according to claim 2 or 3, wherein a reinforcing strip is further disposed around the positioning portion on the first support tube.
The support device according to claim 7, wherein the first protrusion is located below the second protrusion, and the reinforcing strip is formed to extend downward from the first protrusion.
The support device according to claim 5, wherein the connecting ends of the connecting units are respectively embedded in the corresponding connecting ends of the two supporting units, and the connecting ends of the two supporting units are also embedded in the connecting ends of the corresponding connecting units.
The supporting device according to claim 9, wherein a connecting hole for inserting the connecting portion of the supporting unit is provided with a radial hole, and a connecting hole for inserting the connecting end of the connecting unit is provided with a mounting hole. The connecting end of the supporting unit is embedded in the mounting hole, and the connecting end of the connecting unit is rotatably embedded in the radial hole.
The support device according to claim 10, wherein a connecting end of the connecting unit for inserting the connection is provided with a cylinder, and the radial hole is matched with the corresponding cylinder, and the connecting unit is connected The cylinder of the end is embedded in the radial bore of the connecting end of the support unit.
The support tool according to claim 11, wherein said radial hole is formed by punching a connection end for inserting the connection in the support unit into a U-shape and then pressing and welding the open end.
A support device according to any one of claims 1 to 3, wherein the support means is a stool, a chair, a table, a hanging frame or a ladder.