JP2011030644A - Foldable frame for table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable frame for a table which has a structure of easily folding legs. <P>SOLUTION: In the foldable frame for the table provided with end members 120 on both ends of a horizontal pipe 111 configuring an upper plate frame and provided with leg members connected to the end members 120 by a hinge pin 102, a guide groove 131a is formed in the longitudinal direction at the upper end of the leg member, and a tightening groove and a curve guide part 125 following it are formed downward from the upper end part on the end member 120. A movable locking piece 103 movable in the longitudinal direction of the leg along the guide groove material 131a is assembled so as to be engaged with the tightening groove as well, a compression spring 105 is locked between the movable locking piece 103 and the hinge pin, and the state that the leg member is raised is continuously maintained by the tensile force. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a foldable frame for a table, and more particularly to a foldable frame for a table having a structure in which legs are folded while supporting the lower part of the upper plate of the table.

Generally, in a space such as a school, an academy, a company meeting room, or a church used by many people, a built-up table or a folding table is often used for the convenience of storage.

Such an assembly table or a foldable table has a table leg that supports an upper plate, and the table leg is foldably attached to a frame that fixes the upper plate.

Such a folding table or assembling table is formed so that the legs are folded and stored inside the frame, and the folded legs are folded in a stable state without being exposed to the outside when folded. For the first time, it becomes possible to stably stack and store during storage.

On the other hand, as an example of such a foldable table, a 'foldable desk' is disclosed in Japanese Patent Application Laid-Open No. 2003-228620, which was registered by the applicant of the present application.

The folding desk according to Patent Document 1 includes an upper plate support portion 10 that supports the upper plate 1, a leg portion 20 that separates the upper plate support portion 10 from the ground by a predetermined distance, and the leg portion 20 that supports the upper plate. In a foldable desk formed of a fixing portion 30 that can be folded at the bottom surface of the portion 10 and a folding portion 40 that fixes the leg portion 20, it extends downward on one side of the fixing portion 30 and is bent inward. The support tool 31 formed as described above, the fixing tool 41 formed on the outer peripheral portion of the folding part 40 and formed with a fixing hole 41a for penetrating and fixing the fixing pin 2, and the folding of the leg part 20 are guided. The shelf 5 is formed in a longitudinal direction and is formed so as to coincide with the fixing hole 41a, and has a guide hole 51 through which the fixing pin 2 passes, and a support base 52 on which books and objects are arranged and supported. If, consisting of.

However, according to the structure of Patent Document 1, the leg portion 20 is fixed by the folding portion 40. The folding portion 40 is gripped by a fixing tool 41 for fixing the leg portion 20 and a hand. A holding tool 42, and one side of the fixing tool 41 is fixed to the upper plate support part 10 and the other side is fixed to the leg part 20. A fixing hole 41a for penetrating and fixing the fixing pin 2 on the outer peripheral surface, and a spring 41b having an elastic force so that one side of the fixing device 41 is not folded. Therefore, there is a problem that the structure is complicated and the manufacturing cost increases.

On the other hand, since Patent Document 1 has a structure in which one side of the fixing tool 41 is folded, when the fixing tool 41 is folded by a little external force, the leg portion 20 can be easily folded and thus cannot be used safely. There are structural disadvantages.
In addition, there is a disadvantage that the leg 20 loosens during long-term use, and the safety is lowered by shaking.

Korean Utility Model No. 20-0303637 Specification

The present invention has been made in order to solve the above-mentioned problems, and it simplifies the structure for folding the leg member to reduce the manufacturing cost. It is an object of the present invention to provide a foldable frame for a table having a structure that prevents a leg member from being folded by an external force and maintains a state in which a leg member is stably spread.

Another object of the present invention is to provide a folding frame for a table whose size can be easily adjusted according to the upper plate.

In order to achieve the above object, the present invention provides an upper plate frame that is tightly fixed to a lower portion of an upper plate, a terminal member that is fixed to both ends of the upper plate frame, and a hinge pin that is hinged to the body of the terminal member. In the folding frame for a table comprising a leg member, the leg member is formed with a guide groove in the longitudinal direction at the upper end, and the movable locking piece is engaged with the movable locking piece and the hinge pin. A compression spring is fastened between the end member and the end member is formed with a through-hole into which the upper end of the leg member is inserted in the body, and is rotatably coupled by a hinge pin. A fastening groove on which the movable locking piece can be placed is formed, and a curved guide portion for guiding the movable locking piece to the fastening groove is formed on a side portion of the body, and the leg member is widened. like When the leg member is rotated around the hinge pin, the movable locking piece is guided along the curved guide portion of the end member, and is moved backward by the tensile force of the compression spring and fastened to the fastening groove. A folding frame for a table is provided.

At this time, the upper plate frame is divided into a left frame portion and a right frame portion, and a plurality of connecting holes are formed at predetermined intervals in the left frame portion and the right frame portion. And being coupled by fastening means.

According to the present invention, the structure for folding the leg member is simple, the manufacturing is easy, and the manufacturing cost can be reduced.

Further, when the leg member is expanded, the movable locking piece is not separated from the fastening groove of the end member even if an external force is applied to the leg member, and the movable locking piece is forcibly separated from the fastening groove of the end member. Thereafter, in a state where the leg member is not rotated, the state where the leg member is spread can be continuously maintained and used stably.

Further, according to the present invention, since the upper frame is divided into the left frame portion and the right frame portion, the left frame portion and the right frame portion can be appropriately adjusted according to the size of the upper plate. Can be reduced.

It is a perspective view which shows the state by which the leg part of the folding frame for tables which concerns on this invention was folded. It is drawing which shows the end plate of the folding frame for tables which concerns on this invention. It is a perspective view which shows the state which extended the leg member of the foldable frame for tables which concerns on this invention. It is principal part sectional drawing which shows the state which folded the leg member of the foldable frame for tables which concerns on this invention. It is principal part sectional drawing which shows the state which extended the leg member of the foldable frame for tables which concerns on this invention. It is sectional drawing by the A-A 'line of FIG. It is sectional drawing which shows other embodiment by the A-A 'line | wire of FIG. 6 is a view illustrating a state in which an end member according to another embodiment of the present invention is coupled to an upper plate frame. 6 is a view illustrating a state in which an end member according to still another embodiment of the present invention is coupled to an upper plate frame. 4 is a view illustrating a folding frame for a table according to another embodiment of the present invention.

Hereinafter, embodiments of a folding frame for a table according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a state in which legs of a foldable frame for a table according to the present invention are folded, and FIG. 2 is a view showing an end plate of the foldable frame for a table according to the present invention. FIG. 3 is a perspective view showing a state in which the leg members of the folding frame for a table according to the present invention are widened, and FIG. 4 shows the leg members of the folding frame for a table according to the present invention folded. FIG. 5 is a cross-sectional view of a main part showing a state, FIG. 5 is a cross-sectional view of a main part showing a state in which a leg member of a folding frame for a table according to the present invention is widened, and FIG. FIG. 6B is a cross-sectional view showing another embodiment taken along the line AA ′ of FIG. 2, and FIG. 7 is a cross-sectional view of an end member according to another embodiment of the present invention. FIG. 8 is a view showing a state of being connected to Et to a drawing showing a state in which coupling the end piece according to another embodiment the top plate frame, Fig 9 is a view showing a foldable frame for the table according to another embodiment of the present invention.

As shown in FIGS. 1 to 6B, the folding frame for a table according to the present invention is attached and fixed to the bottom surface of the upper plate 200, and the leg member 130 can be folded on both sides of the upper plate frame 110. Formed.

Such a foldable frame for a table includes an upper plate frame 110 that is closely fixed to the lower surface of the upper plate 200 having a predetermined area formed by processing wood and the like, and ends that are fixed to both ends of the upper plate frame 110. It comprises a member 120 and a leg member 130 that is pivotably formed with an end portion fastened to the end member 120 by a hinge pin 102.

Hereinafter, each component will be described in more detail.
In the upper plate frame 110, two horizontal pipes 111 are arranged at a predetermined interval, and a vertical pipe 113 is formed between the horizontal pipes 111 so as to be integrally fixed by a method such as welding.

At this time, a fastening hole 111a is formed through the surface of the horizontal pipe 111, and an upper plate placed on the top is coupled and fixed by fastening means such as a bolt.

Meanwhile, end members 120 are fixed to both ends of the upper plate frame 110, and upper portions of leg members 130 are hinged to the end members 120.

In the end member 120, a fixing part 122 is formed on one side of the body 121 to which the end of the horizontal pipe 111 constituting the upper plate frame 110 is coupled and fixed. The upper end of the leg member 130 is inserted, and the upper end of the leg member 130 is inserted into the side of the lower end of the body 121 so that the leg member 130 rotates toward the horizontal pipe 111. Are coupled by a hinge pin 102 penetrating through.

A guide groove 131a is formed at the upper end of the leg member 130 in the longitudinal direction of the leg member 130, and the guide groove 131a has a movable member that moves in the longitudinal direction of the leg member 130 along the guide groove 131a. A stop piece 103 is formed, and a tensile force is applied to the movable locking piece 103 and the hinge pin 102 penetrating the inside of the leg member 130 by a compression spring 105, and the movable locking piece 103 is moved to the guide groove 131a. Prevents you from leaving.

On the other hand, a curved guide part 125 is formed on the side of the body 121 of the end member 120, and a fastening groove 127 is formed downward from the upper end of the curved guide part 125. Such a curved guide part 125 is positioned on an arc having the same distance from the hinge pin 102 fixed to the body 121 of the end member 120, and the movable locking piece 103 moves in close contact therewith.

Further, the movable locking piece 103 that has climbed over the curved guide portion 125 by the rotation of the leg member 130 is moved backward and fastened to the fastening groove 127 of the end member 120 by the tensile force of the compression spring 105.

At this time, the fastening groove 127 is formed so that the rear end thereof is inclined, and is inserted deeper as the leg member 130 is shaken, so that the swing of the leg member 130 is reduced, and durability and reliability are ensured.

In addition, a part of the body 121 is wound around the lower end of the through portion 123 of the body 121 and protrudes to the inside of the through portion 123 to support the side surface of the leg member 130 when the leg member 130 is expanded. A winding projection 129 is further formed. When the leg member 130 is expanded by such a winding convex part 129, the side part of the leg member 130 is stably supported. Of course, when the side of the leg member 130 is supported in a loose state, the winding projection 129 can be adjusted to be in close contact with the side of the leg member 130.

6B, the fixing part 122, to which the end of the horizontal pipe 111 is coupled and fixed to one side of the body 121 of the end member 120, is opened at the top as shown in FIG. 6A. A support projection 122a for supporting the lower end of the horizontal pipe 111 is formed, the end of the horizontal pipe 111 is supported, and the upper end of the fixing portion 122 surrounding the horizontal pipe 111 in this state is welded to the end of the support projection 122a. Bonded together by P.

As shown in FIG. 6B, the fixing part 122 to which the end of the horizontal pipe 111 is coupled and fixed to one side of the body 121 of the end member 120 is in close contact with both sides of the end of the horizontal pipe 111. It goes without saying that the upper end and the lower end of the fixing portion 122 surrounding the horizontal pipe 111 can be joined together by welding P.

Meanwhile, the leg member 130 is formed such that the legs 131 and 132 are maintained at predetermined intervals on both sides, and the interval maintaining member 133 is integrally coupled between the legs 131 and 132 to maintain a rigid state.

Further, a shelf 140 connected by a link 142 is further formed between the leg members 130 formed on both sides, and an object can be placed thereon.

Hereinafter, the folding process of the folding frame for a table according to the present invention will be described in detail with reference to FIGS. 1 to 6B.

First, in a state in which the leg is folded, the movable locking piece 103 is maintained in the state of moving from the guide groove 131a of the leg member 130 toward the end, and in this state, the leg member 130 is rotated around the hinge pin 102. In this case, the movable locking piece 103 can smoothly rotate along the curved guide portion 125.

At this time, when the leg member 130 is completely spread around the hinge pin 102, the movable locking piece 103 moves over the curved guide portion 125 of the end member 120. Therefore, the guide groove 131a of the leg member 130 and the fastening groove 127 of the end member 120 coincide with each other, and the movable locking piece 103 pulled by the compression spring 105 is pulled toward the hinge pin 102, so that the movable locking piece 103 is pulled inside the guide groove 131 a of the leg member 130 and the fastening groove 127 of the end member 120.

Even if the leg member 130 is rotated to fold in such a state, the movable locking piece 103 is pulled inside the guide groove 131a and the end member 120 of the leg member 130 and fastened to the fastening groove 127. Since it is in a state, it does not rotate, and the state in which the leg member 130 is expanded is maintained.

On the other hand, in order to fold the leg member 130, the movable locking piece 103 is pulled to the upper end side of the leg member 130 to be detached from the locking groove 127 of the end member 120, and then the leg member 130 is If the hinge pin 102 is slightly rotated around the hinge pin 102, the movable locking piece 103 gets into the curved guide portion 125 of the end member 120, and in this state, the leg member 130 is subsequently rotated around the hinge pin 102. Thus, the leg member 130 can be folded.

FIG. 7 is a view showing another fastening state of the end member 120, and a fixing portion 122 is inserted into one end of the body 121 of the end member 120 at the end of the horizontal pipe 111 to fix the end member 120. The portion 122 is inserted into the end insertion groove 111 b of the horizontal pipe 111.

At this time, fastening holes 122c and 111c are formed through the sides of the fixing portion 122 and the end of the horizontal pipe 111, respectively, and fastening means 107 including a bolt 107a and a wing nut 107b is penetrated and fastened. The end member 120 is integrally coupled and fixed to the end of the pipe 111.

On the other hand, the fastening means 107 may have a bolt and nut fastening structure, or may be coupled through a rivet, but uses a wing nut 107b so that it can be easily disassembled without a separate tool. .

FIG. 8 is a view showing still another fastening state of the end member 120, and the inside of the fixing portion 122 of the end member 120 is a predetermined depth or more when the end portion of the horizontal pipe 111 is inserted and mounted. A stopper 122b is formed to prevent deep insertion into the stopper 122b.

Accordingly, when the end of the horizontal pipe 111 is inserted into the inside of the fixing portion 122 of the end member 120, it is inserted at an appropriate depth, so that it is easy to assemble, and in that state, it is fixed integrally by welding or the like. Can do.

FIG. 9 is a view for explaining the structure of a frame according to another embodiment of the present invention, wherein the upper plate frame 110 is divided into a left frame portion 110a and a right frame portion 110b. A plurality of connecting holes 110c and 110d are formed on the side portions of the left frame portion 110a and the right frame portion 110b while maintaining a predetermined interval, and are coupled to appropriate positions by known fastening means such as bolts and nuts.

In this way, by dividing the upper plate frame 110 and adjusting the size to an appropriate size, it is not necessary to manufacture the upper plate frame 110 in various dimensions by the upper plate 200, and the left frame depends on the size of the upper plate. The upper plate frame 110 can be formed in a desired size by appropriately connecting the connecting holes 110c and 110d of the portion 110a and the right frame portion 110b and then fastening them with fastening means.

As mentioned above, although embodiment of this invention was described in detail, the right range of this invention is not limited to this, The right of this invention is in the range substantially equivalent to embodiment of this invention. Range.

102 Hinge pin 103 Movable locking piece 105 Compression spring 110 Upper plate frame 120 End member 130 Leg member 200 Upper plate

Claims (6)

An upper plate frame (110) fixed to a lower portion of the upper plate (200), a terminal member (120) fixed to both ends of the upper plate frame (110), and a hinge pin (102) to the terminal member (120) In a folding frame for a table consisting of leg members (130) hinged by
In the leg member (130), a guide groove (131a) is formed in the longitudinal direction at the upper end and the movable locking piece (103) is engaged, but the movable locking piece (103) and the hinge pin (102) are engaged with each other. A compression spring (105) is fastened between them,
The end member (120) has a through-hole (123) into which the upper end of the leg member (130) is inserted in the body (121) and is hinged by a hinge pin (102). The body (121) A fastening groove (127) on which the movable locking piece (103) can be placed is formed on the upper side of the body, and the movable locking piece (103) is placed on the side of the body (121). A curved guide portion (125) for guiding to (127) is formed;
When the leg member (130) is rotated around the hinge pin (102) so that the leg member (130) is spread, the movable locking piece (103) is curved by the end member (120). A folding frame for a table, which is guided along a guide portion (125), is moved backward by a tensile force of a compression spring (105) and fastened to the fastening groove (127). If the leg member (130) is spread out by winding a part of the body at the lower end of the penetration part (123) of the end member (120) and projecting it inside the penetration part (123), the leg The folding frame for a table according to claim 1, further comprising a winding projection (129) for supporting a side surface of the member (130). The upper plate frame (110) is composed of a horizontal pipe (111) arranged with a predetermined interval and a vertical pipe (113) integrally coupled between the horizontal pipe (111),
The fixed part (122) on which the end of the horizontal pipe (111) is placed is formed on one side of the body (121) of the end member (120). Foldable frame for tables. A stopper (122b) for preventing the end of the horizontal pipe (111) from being inserted deeply is further formed inside the fixing part (122) of the end member (120). The foldable frame for a table according to claim 3. The upper plate frame (110) is composed of a horizontal pipe (111) arranged at a predetermined interval and a vertical pipe (113) integrally formed between the horizontal pipe (111),
On one side of the body (121) of the end member (120), a fixing part (122) to be inserted into the end insertion groove (111b) of the horizontal pipe (111) is projected, and the fixing part (122 2) and the horizontal pipe (111) are formed with through holes (122c, 111c), and the fastening means (107) is through-fastened. Foldable frame. The upper plate frame (110) is divided into a left frame part (110a) and a right frame part (110b), and a plurality of connecting holes are formed in the left frame part (110a) and the right frame part (110b). The foldable frame for a table according to claim 1, wherein (110c, 110d) are formed at a predetermined interval and are coupled by fastening means.