JP3121428U - Folding desk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding desk that can take a space below a beam and can store a wagon of a predetermined standard.
A locking device A is provided outside the column 3 so that the top plate 1 can be rotated in a horizontal state with respect to the upper surface of the column 3 and a vertical state standing on the rear side of the column 3. . A pair of right and left columns 3 are provided, and a beam 6 is provided between the upper ends of these columns.
[Selection] Figure 5

Description

  The present invention relates to a folding desk used in an office office or the like in an office. Here, the “folding desk” refers to a general JIS standard desk top plate that can be folded by turning it from a horizontal state to a vertical state. Including the folding desk.

  The applicant of the present application has provided a folding table locking device that is safe and free from the danger of pinching a hand during operation (see Patent Document 1). As shown in FIG. 5 of Patent Document 1, the folding table described in Patent Document 1 is provided with a locking device that rotates and locks the top plate between a horizontal state and a vertical state. A locking device is provided between the upper surface of the beam and the lower surface of the top plate that are installed between the upper ends of the columns. Therefore, the space between the top plate lower surface and the beam upper surface becomes a dead space, and it is difficult to effectively use the space below the beam. That is, since the space below the beam becomes narrower with respect to the total height of the table, as shown by a chain line in FIG. However, there is a problem that the three-stage wagon W cannot practically be stored unless it is a type having a considerably low height. The same applies to the case where the locking device is provided between the inner side of the upper end of the support and the lower surface of the top plate as shown in FIG. In this case, the beam must be installed between the columns below the locking device, and the space below the beam is also narrowed.

Japanese Patent No. 2868755

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a folding desk that can solve the conventional problems, can take a space below the beam, and can store a wagon of a predetermined standard.

  In order to solve the above-mentioned problem, the device according to claim 1 is provided with a locking device that allows the top plate to be rotated in a horizontal state with respect to the upper surface of the column and in a vertical state standing on the rear side of the column. In the folding desk provided, the locking device is provided outside the support column.

  According to a second aspect of the present invention, in the first aspect, a pair of right and left columns are provided, a beam is provided between the upper ends of the columns, and a lower portion of the beam is formed in a space capable of storing a predetermined wagon. It is characterized by.

  This device is as described above, and since the locking device is provided outside the support column, the beam can be attached to the upper end of the support column, the lower space is widened, and a predetermined standard that could not be stored conventionally. The excellent effect of being able to store the wagon of can be expected.

  An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an overall side view of a folding desk, FIG. 2 is a perspective view of a part of the main part with the top plate removed, and FIG. 3 is a schematic enlarged vertical side view of the part omitted along line III-III in FIG. 4 is a partially broken side view for explaining the operation, FIG. 5 is an enlarged vertical front view of a main part on one side of the top plate, and FIG. 6 is a perspective view of the latch plate member.

  Reference numeral 1 denotes a top plate that constitutes a folding desk. A frame body 2 having a substantially U-shaped cross section having a top plate mounting flange portion 2a is formed on both sides of the lower surface of the top plate so that the upper opening side faces the top plate 1. Fixed in the front-rear direction. Reference numeral 3 denotes a pair of left and right support columns, which are erected on the slightly rear side of a leg base 5 having a pair of front and rear casters 4 and 4 on the lower surface. A transverse beam 6 is installed between the upper ends of the columns 3. As shown in FIG. 5, a locking device A is installed at an outer position of each column 3 on the opposite side of the lateral beam 6. That is, a latch plate member 7 having a shape as shown in FIG. 6 is fitted and fixed to the locking device A from below the frame body 2. The latch plate member 7 and the frame body 2 are pivotally supported by a pivot shaft 8 penetrating them in the left-right direction. As a result, the top plate 1 stands in the horizontal state (use state) where the top shaft 1 lies around the pivot shaft 8 as shown in FIGS. 1 and 3 and the rear side of the column 3 as shown in FIG. It is rotated to a vertical state (non-use state).

  Reference numeral 10 denotes a connecting shaft which is turned in the horizontal direction on the lower surface of the top plate 1 and is rotatably mounted between the frame bodies 2 and 2. A storage frame 11 having a substantially U-shaped cross section between the frame bodies 2 and 2. It is housed inside and is not exposed to the outside. A pinion 12 is attached to the end of each of the frame bodies 2, 2 of the connecting shaft 10. Reference numeral 15 denotes a slide member having a substantially U-shaped cross section that is slidably housed in each frame body 2, 2. A rack 16 that engages with the pinion 12 is provided on the inner surface of the front end side of the slide member 15. , The pinion 12 that meshes with the rack 16 rotates, and this rotational force is transmitted to the other side pinion 12 and the rack 16 via the connecting shaft 10, and at the same time, the other side slide member 15 is also slid. ing. Reference numeral 17 denotes a stopper portion formed on the lower surface of the front side of the slide member 15, which is locked to the front end edge 18 of each frame body 2, 2 when the slide member 15 is urged rearward by a tension spring described later. . Reference numeral 19 denotes an operation handle provided in a recessed manner so that a finger can be easily hooked on the lower surface of the slide member 15 on the front side of the stopper portion 17.

  At a position near the latch plate member 7 of the slide member 15, a locking pin 21 and a locking pin 22 are provided penetrating both side walls at intervals in the front-rear direction. A long hole 24 and a long hole 25 for movably engaging the locking pin 21 and the locking pin 22 are provided laterally on both side walls of the frame bodies 2 and 2. Further, an elongated hole 26 that is engaged with the rotary shaft 8 is provided in a lateral direction at an intermediate position between the locking pin 21 and the locking pin 22 on both side walls of the slide member 15. Reference numeral 28 denotes a tension spring, one end of which engages with the locking pin 22 and the other end of which engages with a closing cap 29 fitted to the rear end of each frame body 2, 2. The tension spring 28 causes the slide member 15 to always engage the locking pin 21 and the locking pin 22 with the rear end portions of the long hole 24 and the long hole 25, respectively, and the stopper portion 17 to each frame body 2, 2. The front end edge 18 is urged so as to be locked.

  Reference numeral 31 denotes a locking groove formed on the front side of both side walls of the latch plate member 7. The locking pin 21 and the locking pin 22 of the slide member 15 that receive the urging force of the tension spring 28 when the top plate 1 is in a horizontal state. Are engaged with the rear end portions of the long hole 24 and the long hole 25, respectively, so that the locking pin 21 is locked. Reference numeral 32 denotes a locking groove formed on the rear side of the outer side wall of the latch plate member 7, which locks with the locking pin 21 of the slide member 15 that receives the urging force of the tension spring 28 when the top plate 1 is in a vertical state. The locking pins 22 are locked when the pins 22 are engaged with the rear ends of the long holes 24 and 25, respectively. Reference numeral 34 denotes a taper portion formed in a notch at the upper edge portion of the latch plate member 7 near the locking groove 31 near the locking groove 31. The taper portion 21 is rotated to turn the top plate 1 from the vertical state to the horizontal state. When the lock pin is locked to the lock groove 31, the lock pin 21 is brought into contact with and slides to guide the lock groove 31. Reference numeral 35 denotes a tapered portion formed in a side edge portion of the outer side wall of the latch plate member 7 near the locking groove 32. The taper portion 35 is rotated so as to turn the top plate 1 from the horizontal state to the vertical state. When locking 22 to the locking groove 32, the locking pin 22 contacts and slides to guide the locking groove 32.

  Next, the operation of this embodiment will be described. In order to fold the top plate 1 in the horizontal use state of FIG. 3 to make it non-use in the vertical state, as shown by the arrows, one of the slide members 15 on the left and right is hooked on the handle portion 19 with a finger and the tension spring 28 Slide forward against the biasing force. Then, as shown by a one-dot chain line in FIG. 4, the stopper portion 17 is separated from the front end edge 18 of each frame body 2, 2, and the locking pin 21 and the locking pin 22 are the rear end of the long hole 24 and the long hole 25, respectively. The engaging pin 21 is disengaged from the engaging groove 31 while engaging the front end portion from the portion. After the locking pin 21 is removed from the locking groove 31, when the front portion of the top plate 1 is lifted and rotated upward while maintaining the sliding state, the top plate 1 rotates about the rotation shaft 8 as a fulcrum. The locking pin 21 moves along the trajectory of the taper 34 through the upper portion of the tapered portion 34. When the sliding state is released after the locking pin 21 passes above the tapered portion 34, the sliding member 15 receives the urging force of the tension spring 28 again, and the stopper portion 17 is engaged with the front end edge 18 of each frame body 2,2. As a result, the locking pin 21 and the locking pin 22 are engaged with the rear ends of the long hole 24 and the long hole 25, respectively.

  Then, the top plate 1 is changed from the horizontal state to the inclined state as shown by a two-dot chain line in FIG. 4, and further from the inclined state to the vertical state standing on the rear side of the support column 3 as shown by the solid line. The pin 22 is locked in the locking groove 32, and this vertical state is maintained. When the locking pin 22 comes into contact with the tapered portion 35 and is guided to slide on the tapered portion and locked in the locking groove 32 when the state is close to the vertical, the locking is not performed. Very smooth. At this time, since the outer edge of the long hole 25 is formed in a curved shape protruding slightly outward, the locking pin 22 smoothly enters the locking groove 32 from the tapered portion 35.

  In order to change from the non-use state of FIG. 4 to the use state of FIG. 1 again, first, either one of the left and right slide members 15 is hooked on the handle portion 19 to resist the urging force of the tension spring 28. And slide it forward. Thereby, the stopper portion 17 is separated from the front end edge 18 of each frame body 2, 2, and the locking pin 21 and the locking pin 22 are engaged with the front end portion from the rear end portion of the long hole 24 and the long hole 25, respectively. At the same time, since the locking pin 22 is detached from the locking groove 32, after the locking pin 22 is removed from the locking groove 32, the top plate 1 facing upward while maintaining the sliding state is retained. Turn the front part down and turn it down. Then, the top plate 1 rotates in the direction opposite to the above with the rotation shaft 8 as a fulcrum, and the locking pin 22 moves along the rotation locus above the taper portion 35. Then, the top plate 1 changes from the vertical state to the inclined state, and further from the inclined state to the horizontal state near the upper surface of the support column 3. In this horizontal state, the locking pin 21 is locked to the locking groove 31, and this horizontal state is maintained. Is done. Even in this nearly horizontal state, the locking pin 21 once comes into contact with the tapered portion 34 and is guided by the tapered portion to be locked in the locking groove 31, so that the locking is very smooth. Also in the above, when the sliding state is released after the locking pin 22 passes over the tapered portion 35, the sliding member 15 receives the urging force of the tension spring 28 again, and the stopper portion 17 has the front edge of each frame body 2,2. 18, the locking pin 21 and the locking pin 22 are engaged with the rear end portions of the long hole 24 and the long hole 25, respectively.

  As described above, since the locking device A is provided at a position outside the support columns 3 as shown in FIG. 5, the beam 6 can be attached between the upper ends of the support columns 3, The gap between the lower surface of the plate 1 and the upper surface of the beam 6 can be reduced to eliminate the dead space, and the space below the beam 6 can be widened with respect to the overall height of the desk. Therefore, as shown in FIG. 7, the wagon W of a predetermined standard that could not be stored conventionally can be stored sufficiently.

  Although not shown, it is preferable to provide a risk prevention cover plate on the outside of the locking device A so as to cover the latch plate member 7 for preventing a user or the like from being caught by a finger during operation.

  This embodiment is merely a preferred example, and the specific structure and arrangement of the locking device A, including the shape of the latch plate member 7, can be arbitrarily set within the scope of the claims of the utility model registration. It can be modified and changed. Further, the wagon W housed in the space below the beam 6 is only a preferable example, and is not necessarily shown.

It is a whole side view showing the folding desk of one embodiment of this invention. It is a perspective view of the principal part which a top plate etc. were removed partially omitted. It is a general | schematic expanded vertical side view of a part omission along the III-III line | wire of FIG. It is a partially broken side view for operation explanation. It is an expanded vertical front view of the principal part of one side of a top plate It is a perspective view of a latch plate member. It is a front view of the principal part which shows the state which accommodated the three-stage wagon of the predetermined standard in the desk. (A), (B) is a front view of the principal part which shows the example which cannot each accommodate the conventional three-stage wagon of a predetermined standard.

Explanation of symbols

A Locking device 1 Top plate 2 Frame body 3 Post 6 Beam 7 Latch plate member 8 Rotating shaft
10 Connecting shaft
11 Storage frame
12 Pinion
15 Slide member
16 racks
17 Stopper
21, 22 Locking pin
24, 25, 26 slot
28 Tension spring
31, 32 Locking groove
34, 35 Taper

Claims (2)

  In a folding desk provided with a locking device that allows the top plate to rotate in a horizontal state with respect to the upper surface of the column and in a vertical state standing on the rear side of the column, the locking device is provided outside the column. Folding desk characterized by being.   The folding desk according to claim 1, wherein a pair of right and left columns are provided, a beam is provided between upper ends of the columns, and a lower part of the beam is formed in a space capable of storing a wagon of a predetermined standard.

Images