CN212185805U - Table with foldable table top - Google Patents
Table with foldable table top Download PDFInfo
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- CN212185805U CN212185805U CN201721786074.8U CN201721786074U CN212185805U CN 212185805 U CN212185805 U CN 212185805U CN 201721786074 U CN201721786074 U CN 201721786074U CN 212185805 U CN212185805 U CN 212185805U
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- hinge
- chair
- side link
- table plate
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- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000009977 dual effect Effects 0.000 description 2
- 235000021167 banquet Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a desk with a foldable desktop. The table is arranged at the back of each chair in the row of chairs, and each table comprises a table plate, two cross beams and two sets of double-rocker mechanisms; the lower parts of two ends of the table plate are respectively provided with a beam which is in an inverted L shape, the horizontal parts are respectively fixed at the bottom of the table plate, and the vertical parts are positioned at the edge of the table plate; the table plate is positioned between the two chair columns of the back of each chair in the row of chairs and is fixed on the chair columns through a set of double-rocker mechanism respectively arranged on two sides of the cross beam; each set of double-rocker mechanism comprises four same hinges and two side link rods with different lengths. The utility model discloses not only convenient operation, simple structure lets the desktop more stable moreover.
Description
Technical Field
The utility model relates to a foldable table in public areas, in particular to a table with a foldable table top.
Background
Due to the characteristic of convenient folding, the foldable table can be used for seeing the body shadow frequently in temporary hospitality places such as banquets, meetings, exhibitions and the like. Although the existing foldable table has the advantage of being foldable, the foldable table has an unstable factor because the legs and the table top are not firmly connected together and the table top is merely placed on the legs after the foldable table is unfolded. When the desk is used by a user, the desk top can be separated from the desk legs only by slightly pressing one side of the desk top, and the desk is inclined, so that the desk can be easily turned over. There is another collapsible table at school or other public places at present, needs the operator to carry out the combined motion of rotation and translation downwards when the desktop is folding, need earlier to lift up the desktop along the spout direction upwards during the use and then rotate and just can put the desktop flat stable, and not only troublesome poeration like this, stability is also poor.
Therefore, how to make a table with a foldable table top which is convenient to operate and has good stability after being unfolded becomes the most needed problem at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a desk with collapsible desktop to the not enough that exists among the prior art. The table plate of the table is fixed on the chair columns through the cross beams on the two sides and the double-rocker mechanism with the four hinges, so that the table plate can be horizontally placed, lifted and turned, and the table is convenient to fold. The utility model discloses not only convenient operation, simple structure lets the desktop more stable moreover.
The utility model discloses a solution is:
a desk with a foldable desktop is arranged at the back of each chair in a row of chairs, and each desk comprises a desk plate, two cross beams and two sets of double-rocker mechanisms;
the row chairs are arranged in classrooms, meeting rooms or reporting halls, and each chair is provided with two upright posts;
the two sides of the table plate are respectively provided with a beam which is in an inverted L shape, the horizontal parts are respectively fixed at the bottom of the table plate, and the vertical parts are positioned at the edge of the table plate;
the table plate is positioned between two chair columns at the back of each chair in the row of chairs and is fixed on the chair columns through a set of double-rocker mechanism respectively arranged at two sides of the cross beam;
each set of double-rocker mechanism comprises four same hinges and two side link rods with different lengths; the four hinges are the same and are all horizontally arranged; the first hinge and the fourth hinge are fixed on the vertical part of the cross beam, the second hinge is fixed on the inner side of the chair column, and the third hinge is fixed on the inner side of the chair column; round holes at two ends of the first connecting rod are respectively sleeved in the grooves at the end parts of the first hinge and the second hinge; round holes at two ends of the second side link are respectively sleeved in grooves at the end parts of the third hinge and the fourth hinge; the first side link and the second side link are positioned in the same vertical plane; the first side link and the second side link are both arc-shaped, wherein the arc top of the first side link faces upwards, and the arc top of the second side link faces downwards;
when the table plate is horizontally placed, the height of the table plate is the same as that of the top end of the chair column; at the moment, the centers of the first hinge, the fourth hinge and the third hinge are sequentially positioned on a horizontal line from left to right, and the second hinge is positioned at the upper part between the fourth hinge and the third hinge; the distance between the first hinge and the second hinge is L1, the distance between the second hinge and the third hinge is L2, the distance between the third hinge and the fourth hinge is L3, and the distance between the first hinge and the fourth hinge is L4; the positional relationship among the four hinges satisfies: l4+ L1 is not more than L2+ L3, L1 is larger than L2, L3 and L4, and L4 is smaller than L1, L2 and L3;
specifically, it is preferable that: the distance between the centers of the first hinge and the fourth hinge is L4 which is equal to 1.6 cm, the distance between the centers of the fourth hinge and the third hinge is L3 which is equal to 4.6 cm, the distance between the centers of the second hinge and the third hinge is L2 which is equal to 3.1 cm, and the distance between the centers of the first hinge and the second hinge is L1 which is equal to 5.8 cm;
the distance from the center of the second hinge to the end of the table top is 2.0-3.0 cm.
Compared with the prior art, the utility model provides a technical scheme has following advantage and characteristics:
the utility model discloses in when crossbeam and side link collineation in the two rocker mechanism, also when collapsible desktop rotates horizontal position and vertical position exactly, drive power can not produce moment, collapsible desktop can not continue to rotate, forms so-called mechanism position dead point, and collapsible desktop reaches stable state, and fundamentally solves the unstable problem of desktop. The utility model also has the characteristic that the foldable table top can be directly rotated to reach the position of the dead point of the mechanism, and the operation action is not only simple, but also labor-saving.
Drawings
FIG. 1 is a view of a double-rocker mechanism of a table with a foldable table top according to the present invention;
FIG. 2 is a schematic view of a table according to the present invention with the foldable table top in a horizontal position;
FIG. 3 is a front view of the dual rocker mechanism with the foldable table top in a horizontal position;
FIG. 4 is a schematic view of a table of the present invention with the foldable table top in an upright position;
FIG. 5 is an elevation view of the dual rocker mechanism with the foldable table top in the upright position;
FIG. 6 is a perspective view of a table with a foldable top according to the present invention;
figure 7 is a side view of the table of the present invention with the foldable table top in a horizontal position.
Description of reference numerals: the chair comprises a table plate 1, a cross beam 2, a first hinge 3, a first connecting rod 4, a second hinge 5, a chair column 6, a third hinge 7, a second connecting rod 8 and a fourth hinge 9
The specific implementation mode is as follows:
the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The table with the foldable table top of the utility model is arranged at the back of each chair in the row of chairs as shown in figure 1, and each table comprises a table plate 1, two cross beams 2 and two sets of double-rocker mechanisms;
the row chairs are arranged in classrooms, meeting rooms or reporting halls, and each chair is provided with two upright posts;
the lower parts of two ends of the table plate 1 are respectively provided with a beam 2, the beams 2 are in an inverted L shape, the horizontal parts are respectively fixed at the bottom of the table plate 1, and the vertical parts are positioned at the edge of the table plate 1;
the table plate 1 is positioned between two chair columns 6 at the back of each chair in the row of chairs and is fixed on the chair columns 6 through a set of double-rocker mechanisms respectively arranged at two sides of the cross beam;
each set of double-rocker mechanism comprises four same hinges and two side link rods with different lengths; the four hinges are the same and are all horizontally arranged; wherein, the first hinge 3 and the fourth hinge 9 are fixed on the vertical part of the beam, and the second hinge 5 and the third hinge 7 are fixed on the inner side of the chair column 6; round holes at two ends of the first connecting rod 4 are respectively sleeved in grooves at the end parts of the first hinge 3 and the second hinge 5; round holes at two ends of the second side link 8 are respectively sleeved in grooves at the end parts of the third hinge 7 and the fourth hinge 9; the first side link 4 and the second side link 8 are located in the same vertical plane (i.e. the grooves of the four hinges are located in the same vertical plane, as shown in fig. 7); the first side link 4 and the second side link 8 are both arc-shaped, wherein the arc top of the first side link 4 is upward, and the arc top of the second side link 8 is downward;
as shown in fig. 1, when the table board 1 is placed stably horizontally, the height of the table board is the same as that of the top end of the chair column 6; at the moment, the centers of the first hinge 3, the fourth hinge 9 and the third hinge 7 are sequentially positioned on a horizontal line from left to right, and the second hinge 5 is positioned at the upper part between the fourth hinge 9 and the third hinge 7; the distance between the first hinge 3 and the second hinge 5 is L1, the distance between the second hinge 5 and the third hinge 7 is L2, the distance between the third hinge 7 and the fourth hinge 9 is L3, and the distance between the first hinge 3 and the fourth hinge 9 is L4; the positional relationship among the four hinges satisfies: l4+ L1 is not less than L2+ L3, L1 is larger than L2, L3 and L4, and L4 is smaller than L1, L2 and L3 (shown in FIG. 3);
the position relation among the four hinges meets the rod length relation in the double-rocker mechanism, the application of the dead point position of the double-rocker mechanism can be realized, and the stability of the foldable desktop is improved;
the method specifically comprises the following steps: the distance between the centers of the first hinge and the fourth hinge is L4-1.6 cm, the distance between the centers of the fourth hinge and the third hinge is L3-4.6 cm, the distance between the centers of the second hinge and the third hinge is L2-3.1 cm, and the distance between the centers of the first hinge and the second hinge is L1-5.8 cm;
the distance from the center of the second hinge 5 to the tail end of the table top is 2.0-3.0 cm;
the four hinges are all cylindrical hinges.
Since there are many ways to implement the table with foldable table top, the following description will be made by using specific embodiments:
the utility model provides a desk with a foldable desktop, the utility model provides a foldable desktop adopts two rocker mechanisms, please refer to fig. 1 to 7 about the schematic diagram of desk. In the embodiment shown in fig. 2 and 3, when the foldable table top is rotated downwards from the vertical position to the horizontal position by hand, one end of the first hinge 3 and one end of the fourth hinge 9 are fixedly connected to the vertical part of the cross beam 2, the table 1 and the cross beam 2 rotate downwards, the first link rod 4 is driven by the first hinge 3 to rotate upwards around the second hinge 5, and the second link rod 8 is driven by the fourth hinge 9 to rotate upwards around the third hinge 7, so that the table 1 is lifted upwards and rotated. When the table board 1 is in a horizontal position, the top end of the second side link 8 at the fourth hinge 9 props against the inner side of the first side link 4 at the first hinge 3 to realize that the mechanism is locked, the centers of the first hinge 3, the fourth hinge 9 and the third hinge 7 are positioned on a straight line from left to right, the driving force cannot generate moment at the third hinge 7, the whole foldable table top reaches the dead point position of the double-rocker mechanism, and the foldable table top of the table is fixed in the horizontal position and cannot continuously rotate downwards. The double-rocker mechanisms at the symmetrical positions simultaneously realize the same movement, and the table plates 1 are locked at the two sides simultaneously.
In the embodiment shown in fig. 4 and 5, when the foldable table top is rotated upward from the horizontal position to the vertical position by hand, one end of the first hinge 3 and one end of the fourth hinge 9 are fixedly connected to the vertical part of the cross beam 2, the table board 1 and the cross beam 2 rotate upward, the first hinge 3 drives the first link rod 4 to rotate downward around the second hinge 5, and the fourth hinge 9 drives the second link rod 8 to rotate downward around the third hinge 7, so that the table board 1 sinks downward and rotates. When the table board 1 is in a vertical position, the bottom end of the first connecting frame rod 4 at the first hinge 3 props against the inner side of the second connecting frame rod 8 at the fourth hinge 9 to realize that the mechanism is locked, the centers of the second hinge 5, the first hinge 3 and the fourth hinge 9 are positioned on a straight line from top to bottom, the driving force cannot generate moment at the second hinge 5, the whole foldable table top reaches the dead point position of the double-rocker mechanism, and the foldable table top of the table is fixed at the vertical position and cannot continue to rotate upwards. The double-rocker mechanisms at the symmetrical positions simultaneously realize the same movement, and the table plates 1 are locked at the two sides simultaneously.
The utility model is not the best known technology.
Claims (2)
1. A desk with a foldable desktop is characterized in that the desk is arranged at the back of each chair in a row of chairs, and each desk comprises a desk plate, two cross beams and two sets of double-rocker mechanisms;
the lower parts of two ends of the table plate are respectively provided with a beam which is in an inverted L shape, the horizontal parts are respectively fixed at the bottom of the table plate, and the vertical parts are positioned at the edge of the table plate;
the table plate is positioned between the two chair columns of the back of each chair in the row of chairs and is fixed on the chair columns through a set of double-rocker mechanism respectively arranged on two sides of the cross beam;
each set of double-rocker mechanism comprises four same hinges and two side link rods with different lengths; the four hinges are the same and are all horizontally arranged; the first hinge and the fourth hinge are fixed on the vertical part of the cross beam, the second hinge is fixed on the inner side of the chair column, and the third hinge is fixed on the inner side of the chair column; round holes at two ends of the first connecting rod are respectively sleeved in the grooves at the end parts of the first hinge and the second hinge; round holes at two ends of the second side link are respectively sleeved in grooves at the end parts of the third hinge and the fourth hinge; the first side link and the second side link are positioned in the same vertical plane; the first side link and the second side link are both arc-shaped, wherein the arc top of the first side link faces upwards, and the arc top of the second side link faces downwards;
when the table plate is horizontally placed, the height of the table plate is the same as that of the top end of the chair column; at the moment, the centers of the first hinge, the fourth hinge and the third hinge are sequentially positioned on a horizontal line from left to right, and the second hinge is positioned at the upper part between the fourth hinge and the third hinge; the distance between the first hinge and the second hinge is L1, the distance between the second hinge and the third hinge is L2, the distance between the third hinge and the fourth hinge is L3, and the distance between the first hinge and the fourth hinge is L4; the positional relationship among the four hinges satisfies: l4+ L1 is not more than L2+ L3, L1 is larger than L2, L3 and L4, and L4 is smaller than L1, L2 and L3;
the distance from the center of the second hinge to the tail end of the table top is 2.0-3.0 cm.
2. A table with a foldable table top as claimed in claim 1 wherein the first hinge and fourth hinge are spaced apart 1.6 cm apart by L4, 4.6 cm apart by L3, 3.1 cm apart by L2 and 5.8 cm apart by L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786074.8U CN212185805U (en) | 2017-12-20 | 2017-12-20 | Table with foldable table top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786074.8U CN212185805U (en) | 2017-12-20 | 2017-12-20 | Table with foldable table top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212185805U true CN212185805U (en) | 2020-12-22 |
Family
ID=73805672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721786074.8U Expired - Fee Related CN212185805U (en) | 2017-12-20 | 2017-12-20 | Table with foldable table top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212185805U (en) |
-
2017
- 2017-12-20 CN CN201721786074.8U patent/CN212185805U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201222 |