CA1298867C - Structure for extendable tables - Google Patents
Structure for extendable tablesInfo
- Publication number
- CA1298867C CA1298867C CA000577183A CA577183A CA1298867C CA 1298867 C CA1298867 C CA 1298867C CA 000577183 A CA000577183 A CA 000577183A CA 577183 A CA577183 A CA 577183A CA 1298867 C CA1298867 C CA 1298867C
- Authority
- CA
- Canada
- Prior art keywords
- plate
- plates
- engaging plate
- disposed
- engaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009434 installation Methods 0.000 description 2
- 101150076104 EAT2 gene Proteins 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A table comprising two semi-elliptical plates, table legs, two posts, and an engaging plate formed of a first plate and a second plate hinged together.
Several protrusions are disposed at either side of the engaging plate and a side plate is arranged on each of the two posts. Both ends of the side plates are connected with two rails. Thus, a space for rotating is formed between the side plates and rails such that the engaging plate can either be positioned between the two semi-elliptical plates to form a larger table or it can be concealed within the rotating space to form a smaller table.
A table comprising two semi-elliptical plates, table legs, two posts, and an engaging plate formed of a first plate and a second plate hinged together.
Several protrusions are disposed at either side of the engaging plate and a side plate is arranged on each of the two posts. Both ends of the side plates are connected with two rails. Thus, a space for rotating is formed between the side plates and rails such that the engaging plate can either be positioned between the two semi-elliptical plates to form a larger table or it can be concealed within the rotating space to form a smaller table.
Description
~X988~
"IMPRO~ED STRUCTURE FOR EXTENDABLE TABLES"
The present invention relates to an improved structure for extendable kables.
At present, there are extendable table designs to facilitate the use of the limited space available in an ordinary dining room. Often the extendable table is folded to have a smaller table surface, thus occupying less space.
When more people need to share the table, the extendable table can be extended to have a larger table surface.
With the foregoing and other objectives in view, this invention discloses an improved extendable table structure comprising two table top plates, table legs, two posts, an engaging plate formed of a first plate and a second plate hinged together, a plurality of protrusions being disposed at both sides of said engaging plate, a respective edge plate being disposed at a front and a rear side of said engaging plate, a pair of side plates being arranged on said two posts separately, both ends of said side plates being connected with two rails, said improved extendable table structure being characterized in that: a space is formed between said side plates and said rails, a respective fixing seat and a respective supporting pin being fixed at a central location on each of the two side plates, a hollow protrusion being arranged on said fixing seat, said second plate having a pair of L-shaped plates respectively disposed at either side of a bottom surface thereof such that a respective pin , ``` ~L2~13867 is penetrable through a respective one of said pair of L-shaped plates and said hollow protrusions thereby connecting said table top plates and said engaging plate.
One of the features of the present invention is to use a pin to fix an engaging plate at a fixing place of the extendable table, thereby stabilizing the operation of the engaging plate.
Further objectives and advantages of the present invention will become apparent as the following description proceeds, and the features of novelty which characterize the invention are pointed out with particularlity in the claims annexed to and forming a part of this invention.
The present invention will be further illustrated by way of the accompanying d~rawings, in which:
Figure 1 is a perspective view of an extendable table in accordance with the invention.
Figure 2 is an exploded view of the extendable table in accordance with the present invention.
Figure 3 is a cross-sectional view of the extendable table in partially closed position in accordance with the present invention.
Figure 4 is a cross-sectional view of the extendable table when an engaging plate has been folded up to its proper place in accordance with the present invention and ~:913~367 Fig. 5 is an exploded view of an extendable table of the prior art.
Referring to Figs. 1 and 2, it can be seen that the present invention is composed of two plates 1 (in this exemplary case semi-ellip-tical plates), table legs 2 and an engaging plate 3. Two posts 26 are supported b~ the table legs 2. A respective side plate 21 is disposed on each of the posts 26. At the rear and front ends of both side plates 21 two rails 24 are connected, whereby a rotation space 26 is formed between two side pla-tes 21 and two.rails 24. A fixing seat 22 and a supporting pin'23 are fixed at central locations on each of the two side plates 21. On the fixing seat 22 there is also arranged a hollow protrusion 221. An engaging plate 3 is formed from a first plate 4 and a, second pla-te 5', which are hinged together. At the front and rear ends of the engaging plate 3, there are arranged respective edge plates 31, and at the left and right ends' .of the same there are disposed several protrusions '32. At the bottom of the second plate, there are disposed two L-shaped plates 33.
When it is desired to install the engaging plate 3 between the two semi-elliptical plates 1, the semi-elliptical plates are pulled outwards first. The L-shaped plates- 33 are then aligned with the hollow protrusions 221 and are fixed by a pin 34 penetrating therein. The engaginB plate, 3 is then ~lattened, .and " ~298~3~7 the semi-elliptical plates are pushed inwards, thus urging the protrusions 32 into the indentatior~s 13 and forming an extended table as shown in Fig. 1.
~ hen it is intended to decrease the size of the table, the semi-elliptical plates 1 are ~irst pulled outwards, thus retracting the protrusions 32 from the indentations 13. Then the central part of the engagin~
plate 3 is pressed downwards, the second plate 5 can be rotated with the pin 34 as a pivot 'and the first plate 4 is moved obliguely, as shown in Fig. 3. When the first and second plates are overlapped together, the engaging plate 3 is pushed continually until the engaging plate 3 is prevented from moving by the obstruction of the L-shaped plate 33 and supported by the supporting pins 23. The engaging plate 3 is thus lying horizontally within the rotation space 25, as shown in Fig. 4. Then the two semi-e].liptical plates 1 are pushed inwards to make them close together, and complete the procidure.
Particularly referring to Fig. 5, it can be seen that the prior art extendable table comprises two symmetrically semi-circular plates (a). These two semi-circular plates, or table top pieces, are engaged with a rail ~al) and a base plate (b), A bar (a2) extending from the semi-circular plates is slidable at the rail (al), At the upper part of the inner sides of ` these two semi-circular plates (a), there are disposed a plurality of cavities (a4) and a hole (a3) is lXg~
disposed at the lower part thereoY, respectively. The holes (a3) can receive two pivot ends (cl) of a pivot (~). There are two T-shaped projections (c2) formed at the pivot (c). A rotating plate (d) is formed of two plates hinged together. At both sides of the rotating plate (d) there are disposed a plurality o~ small protrusions (d2), respectively. Two T-shaped grooves (dl) are arranged at one plate of the rotating plate (d), whereby the T-shaped bars ~c2) can be mounted within the T-shaped grooves ~dl) and the rotating plate (d) can be opened with its two plates forming a plane to be put between the two semi~circuIar plates (a). The small protrusions (d2) will be mounted within the cavities (a4) thus forming an extended table. When intended to decrease the size of the table, a plate of the rotating plate (d) is superimposed on the other plate and then i-t is turned 180 degrees by virtue of the pivot (c), thereby accomodating the rotating plate (d) within the space between the rail (al), the semi-`circular plates (a) and the base plates (b). Then thetwo semi-circular plates can be pushed together and the surface area of the table is reduced.
However, the aforesaid extendable table suffers from the following drawbacks:
- (l). The pivot plece ends (cl) are to be Inserted into the holes (a3). Since the distance between these two~ holes (a3) is fixed, it is necessary to exert a 12~38fi'7 large force on the pivot piece ~c) to mount the pivot piece between the two holes ~a3), thus causing a lot of trouble in assembling.
(2)- The base plate (b) is arranged to receive -5 rotating plate (d) thereon and prevents the rotating plate (d) from dropping off. However, the base plate (b) is planar in shape, and when the user rotates the rotating plate (d), the rotating plate ~d) is likely to hit the base plate (b), thus obscuring the rotating operation.
"IMPRO~ED STRUCTURE FOR EXTENDABLE TABLES"
The present invention relates to an improved structure for extendable kables.
At present, there are extendable table designs to facilitate the use of the limited space available in an ordinary dining room. Often the extendable table is folded to have a smaller table surface, thus occupying less space.
When more people need to share the table, the extendable table can be extended to have a larger table surface.
With the foregoing and other objectives in view, this invention discloses an improved extendable table structure comprising two table top plates, table legs, two posts, an engaging plate formed of a first plate and a second plate hinged together, a plurality of protrusions being disposed at both sides of said engaging plate, a respective edge plate being disposed at a front and a rear side of said engaging plate, a pair of side plates being arranged on said two posts separately, both ends of said side plates being connected with two rails, said improved extendable table structure being characterized in that: a space is formed between said side plates and said rails, a respective fixing seat and a respective supporting pin being fixed at a central location on each of the two side plates, a hollow protrusion being arranged on said fixing seat, said second plate having a pair of L-shaped plates respectively disposed at either side of a bottom surface thereof such that a respective pin , ``` ~L2~13867 is penetrable through a respective one of said pair of L-shaped plates and said hollow protrusions thereby connecting said table top plates and said engaging plate.
One of the features of the present invention is to use a pin to fix an engaging plate at a fixing place of the extendable table, thereby stabilizing the operation of the engaging plate.
Further objectives and advantages of the present invention will become apparent as the following description proceeds, and the features of novelty which characterize the invention are pointed out with particularlity in the claims annexed to and forming a part of this invention.
The present invention will be further illustrated by way of the accompanying d~rawings, in which:
Figure 1 is a perspective view of an extendable table in accordance with the invention.
Figure 2 is an exploded view of the extendable table in accordance with the present invention.
Figure 3 is a cross-sectional view of the extendable table in partially closed position in accordance with the present invention.
Figure 4 is a cross-sectional view of the extendable table when an engaging plate has been folded up to its proper place in accordance with the present invention and ~:913~367 Fig. 5 is an exploded view of an extendable table of the prior art.
Referring to Figs. 1 and 2, it can be seen that the present invention is composed of two plates 1 (in this exemplary case semi-ellip-tical plates), table legs 2 and an engaging plate 3. Two posts 26 are supported b~ the table legs 2. A respective side plate 21 is disposed on each of the posts 26. At the rear and front ends of both side plates 21 two rails 24 are connected, whereby a rotation space 26 is formed between two side pla-tes 21 and two.rails 24. A fixing seat 22 and a supporting pin'23 are fixed at central locations on each of the two side plates 21. On the fixing seat 22 there is also arranged a hollow protrusion 221. An engaging plate 3 is formed from a first plate 4 and a, second pla-te 5', which are hinged together. At the front and rear ends of the engaging plate 3, there are arranged respective edge plates 31, and at the left and right ends' .of the same there are disposed several protrusions '32. At the bottom of the second plate, there are disposed two L-shaped plates 33.
When it is desired to install the engaging plate 3 between the two semi-elliptical plates 1, the semi-elliptical plates are pulled outwards first. The L-shaped plates- 33 are then aligned with the hollow protrusions 221 and are fixed by a pin 34 penetrating therein. The engaginB plate, 3 is then ~lattened, .and " ~298~3~7 the semi-elliptical plates are pushed inwards, thus urging the protrusions 32 into the indentatior~s 13 and forming an extended table as shown in Fig. 1.
~ hen it is intended to decrease the size of the table, the semi-elliptical plates 1 are ~irst pulled outwards, thus retracting the protrusions 32 from the indentations 13. Then the central part of the engagin~
plate 3 is pressed downwards, the second plate 5 can be rotated with the pin 34 as a pivot 'and the first plate 4 is moved obliguely, as shown in Fig. 3. When the first and second plates are overlapped together, the engaging plate 3 is pushed continually until the engaging plate 3 is prevented from moving by the obstruction of the L-shaped plate 33 and supported by the supporting pins 23. The engaging plate 3 is thus lying horizontally within the rotation space 25, as shown in Fig. 4. Then the two semi-e].liptical plates 1 are pushed inwards to make them close together, and complete the procidure.
Particularly referring to Fig. 5, it can be seen that the prior art extendable table comprises two symmetrically semi-circular plates (a). These two semi-circular plates, or table top pieces, are engaged with a rail ~al) and a base plate (b), A bar (a2) extending from the semi-circular plates is slidable at the rail (al), At the upper part of the inner sides of ` these two semi-circular plates (a), there are disposed a plurality of cavities (a4) and a hole (a3) is lXg~
disposed at the lower part thereoY, respectively. The holes (a3) can receive two pivot ends (cl) of a pivot (~). There are two T-shaped projections (c2) formed at the pivot (c). A rotating plate (d) is formed of two plates hinged together. At both sides of the rotating plate (d) there are disposed a plurality o~ small protrusions (d2), respectively. Two T-shaped grooves (dl) are arranged at one plate of the rotating plate (d), whereby the T-shaped bars ~c2) can be mounted within the T-shaped grooves ~dl) and the rotating plate (d) can be opened with its two plates forming a plane to be put between the two semi~circuIar plates (a). The small protrusions (d2) will be mounted within the cavities (a4) thus forming an extended table. When intended to decrease the size of the table, a plate of the rotating plate (d) is superimposed on the other plate and then i-t is turned 180 degrees by virtue of the pivot (c), thereby accomodating the rotating plate (d) within the space between the rail (al), the semi-`circular plates (a) and the base plates (b). Then thetwo semi-circular plates can be pushed together and the surface area of the table is reduced.
However, the aforesaid extendable table suffers from the following drawbacks:
- (l). The pivot plece ends (cl) are to be Inserted into the holes (a3). Since the distance between these two~ holes (a3) is fixed, it is necessary to exert a 12~38fi'7 large force on the pivot piece ~c) to mount the pivot piece between the two holes ~a3), thus causing a lot of trouble in assembling.
(2)- The base plate (b) is arranged to receive -5 rotating plate (d) thereon and prevents the rotating plate (d) from dropping off. However, the base plate (b) is planar in shape, and when the user rotates the rotating plate (d), the rotating plate ~d) is likely to hit the base plate (b), thus obscuring the rotating operation.
(3). Since there is only sliding movement between the T-shaped bar (c2) and the T-shaped groove (dl) and no fixing means disposed therebetween, it is very possible that the rotating plate (d) might detach from 16 the pivot piece (c), making troublesome re-installation necessary.
As can be plainly seen from the abové description, the present invention provides the following advantages over the prior art:
(1) Because of the arrangement of the rotating space 25 and the supporting pin 23, the engaging plate 3 can be rotated very smoothly and supported by the supporting pin 23, thereby providing a simple structure I but nevertheless an effectively improved e~tendable table structure. .-(2) Due to the fact that the engaging plate 3 is fixed at the fixing ~eat 2~2 by means of the cooperation of the pins 34 and the hollow protrusions 221, the 6 .~ -`` ~138~;7 installation of the engaging plate 3 can be accomplished without the need of great extei~nal force.
Furthermore, the engaging plate 3 can be rotated in either direction without worrying about whether or not the engaging plate is located in its proper position.
Of course it will be realised that -the above has been given only hy way of illustrative example of the present invention and that all such modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is deflned in the appended claims.
As can be plainly seen from the abové description, the present invention provides the following advantages over the prior art:
(1) Because of the arrangement of the rotating space 25 and the supporting pin 23, the engaging plate 3 can be rotated very smoothly and supported by the supporting pin 23, thereby providing a simple structure I but nevertheless an effectively improved e~tendable table structure. .-(2) Due to the fact that the engaging plate 3 is fixed at the fixing ~eat 2~2 by means of the cooperation of the pins 34 and the hollow protrusions 221, the 6 .~ -`` ~138~;7 installation of the engaging plate 3 can be accomplished without the need of great extei~nal force.
Furthermore, the engaging plate 3 can be rotated in either direction without worrying about whether or not the engaging plate is located in its proper position.
Of course it will be realised that -the above has been given only hy way of illustrative example of the present invention and that all such modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is deflned in the appended claims.
Claims
CLAIMS:
(1) An improved extendable table structure comprising two table top plates, table legs, two posts, an engaging plate formed of a first plate and a second plate hinged together, a plurality of protrusions being disposed at both sides of said engaging plate, a respective edge plate being disposed at a front and a rear side of said engaging plate, a pair of side plates being arranged on said two posts separately both ends of said side plates being connected with two rails, said improved extendable table structure being characterized in that: a space is formed between said side plates and said rails, a respective fixing seat and a respective supporting pin being fixed at a central location on each of the two side plates, a hollow protrusion being arranged on said fixing seat, said second plate having a pair of L-shaped plates respectively disposed at either side of a bottom surface thereof such that a respective pin is penetrable through a respective one of said pair of L-shaped plates and said hollow protrusions thereby connecting said table top plates and said engaging plate.
(1) An improved extendable table structure comprising two table top plates, table legs, two posts, an engaging plate formed of a first plate and a second plate hinged together, a plurality of protrusions being disposed at both sides of said engaging plate, a respective edge plate being disposed at a front and a rear side of said engaging plate, a pair of side plates being arranged on said two posts separately both ends of said side plates being connected with two rails, said improved extendable table structure being characterized in that: a space is formed between said side plates and said rails, a respective fixing seat and a respective supporting pin being fixed at a central location on each of the two side plates, a hollow protrusion being arranged on said fixing seat, said second plate having a pair of L-shaped plates respectively disposed at either side of a bottom surface thereof such that a respective pin is penetrable through a respective one of said pair of L-shaped plates and said hollow protrusions thereby connecting said table top plates and said engaging plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000577183A CA1298867C (en) | 1988-09-12 | 1988-09-12 | Structure for extendable tables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000577183A CA1298867C (en) | 1988-09-12 | 1988-09-12 | Structure for extendable tables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1298867C true CA1298867C (en) | 1992-04-14 |
Family
ID=4138713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000577183A Expired - Lifetime CA1298867C (en) | 1988-09-12 | 1988-09-12 | Structure for extendable tables |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1298867C (en) |
-
1988
- 1988-09-12 CA CA000577183A patent/CA1298867C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |