JP3547229B2 - Folding table - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, the top plate is pivotally mounted on a pivot shaft provided on the upper part of the support leg, and the top plate can be switched between a deployed position in which the top plate is in a horizontal position and a folded position in which the top plate is in a vertical position around the pivot shaft. And a folding table.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a folding table, there is a folding table as described in JP-A-4-69030. In this prior art, a lock lever is pivotally mounted on an upper part of a support leg, and the lock lever is provided with a deployment lock claw, and the deployment lock claw of the lock lever is locked to a deployment lock pin on the top plate side. A spring for resiliently operating the lock lever is provided around the lock lever, and the operation lever is configured to be rotatable from the locked position to the unlocked position against the resilient force of the spring. It was made.
[0003]
[Problems to be solved by the invention]
However, in the prior art, the top plate can be locked in the deployed position but not in the folded position. For this reason, the folded top plate cannot be stably held, and the handleability is poor.
[0004]
SUMMARY OF THE INVENTION It is an object of the present invention to enable a top plate to be locked in both a deployed position and a folded position in a folding table.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, a top plate is pivotally mounted on a pivot shaft provided on the upper portion of the support leg, and the top plate can be switched between a deployed position and a folded position around the pivot shaft. In the foldable table, the rotation axis of the lock lever is pivotally mounted on a support bracket provided on the upper portion of the support leg, and the lock lever is provided with a deployment lock claw and a fold lock claw, and is deployed on the top plate side. A lock pin and a fold lock pin are provided, and the lock is provided at a lock position where the deployment lock claw and the fold lock claw of the lock lever respectively lock the deployment lock pin and the fold lock pin on the top plate side. A foldable type having an operation lever for providing a spring for springing the lever around the lock lever and enabling the lock lever to rotate from the locked position to the unlocked position against the elasticity of the spring. A table, wherein the lock lever is on the left The left and right lock levers are connected to each other by a single rotating shaft pivotally attached to the left and right support brackets, and one lock lever has a deployment lock claw and a folding lock claw, and the other has The lock lever has at least a deployment lock claw, the left and right lock levers are provided on the inner surface side of the left and right support brackets, and the operation lever is provided on at least one outer surface side of the left and right support brackets, around the rotation axis of the lock lever. It is provided with an engagement hole which is provided and engages with an engagement pin penetratingly arranged in the elongated hole of the support bracket .

[0006]
According to a second aspect of the present invention, in the first aspect of the present invention, the outer edge around the deployment lock claw of the lock lever is further pressed by an abutment force exerted by a deployment locking pin during a deployment process of the top plate. The lock lever serves as a guide surface for rotating the lock lever toward the non-locking position, and the outer edge of the lock lever around the folding lock claw is formed by the abutting force exerted by the folding locking pin during the folding process of the top plate. Is used as a guide surface for rotating to the unlocked side.
[0007]
According to the first aspect of the present invention, there are the following effects (1).
{Circle around (1)} When the top plate is set to the deployed position, the deployment locking pin on the top plate is locked to the deployment lock claw of the lock lever, and this locked state is maintained by the spring force of the spring. Also, when the top plate is set to the folding position, the folding locking pin on the top plate is locked to the folding lock claw of the lock lever, and this locked state is maintained by the elastic force of the spring. . Therefore, the top plate can be locked in both the deployed position and the folded position. That is, the folded top plate can be stably held, and the handleability can be improved.
[0008]
According to the second aspect of the present invention, there are the following effects (2).
(2) When the lock lever is once rotated to the unlocked position against the resilience of the spring by an operation applied to the operation lever, during the deployment process of the top plate, the deployment locking pin on the top plate is connected to the lock lever. When the abutment force is applied to the outer edge guide surface around the deployment lock claw in the above, the abutment force causes the lock lever to once rotate to the unlocked position against the spring force of the spring, and as a result, the deployment locking pin The lever can be introduced into the deployment lock claw. The lock lever having the deployment locking pin introduced into the deployment lock pawl is held at the lock position by the elastic force of the spring, and holds the top plate at the deployment position. In other words, by providing the outer edge guide surface around the unfolding lock claw of the lock lever, the lock lever is once rotated to the unlocked position at an appropriate timing with the unfolding operation of the top plate without applying an operating force to the operation lever. Thus, it is possible to obtain locking between the deployment lock claw and the locking pin.
[0009]
Also, in the folding process of the top plate after the lock lever is once rotated to the unlock position against the elastic force of the spring by the operation applied to the operation lever, the folding locking pin on the top plate is also locked by the lock. When an abutting force is applied to the outer edge guide surface of the lever around the folding lock claw, the abutting force causes the lock lever to once rotate to the unlocked position against the spring force of the spring, resulting in the folding locking pin. Can be introduced into the folding lock pawl of the lock lever. The lock lever having the folding lock pin introduced into the folding lock pawl is held at the lock position by the elastic force of the spring, and holds the top plate at the folding position. That is, by providing the outer edge guide surface around the folding lock claw of the lock lever, the lock lever is temporarily moved to the unlocked position at an appropriate timing with the folding operation of the top plate without applying an operating force to the operation lever. It is possible to rotate and obtain the lock between the folding lock claw and the lock pin.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic view showing a deployed state of a foldable table, FIG. 2 is a schematic view showing a folded state of a foldable table, FIG. 3 is a schematic view showing a main part of FIG. 1, and FIG. It is a schematic diagram which shows the attitude | position change of a table.
[0011]
As shown in FIGS. 1 and 2, the folding table 10 has the left and right support legs 12 erected at respective centers of a pair of left and right leg stands 11, and connects the upper portions (inner cylinders 18) of the left and right support legs 12. A mounting frame 15A of a top plate 15 is pivotally connected to support brackets 13 provided at left and right ends of the horizontal member 12A via pivot shafts 14, respectively. The top plate 15 is switchable between a deployed position (FIG. 1) in a horizontal position around the pivot shaft 14 and a folded position (FIG. 2) in a vertical position. At this time, the pivot shaft 14 is set at a position displaced outward in the horizontal direction from the support leg 12 and the horizontal member 12A, and the top plate 15 that is in the vertical posture at the folding position may interfere with the horizontal member 12A. Not to be.
[0012]
The footrest 11 includes a caster 16. The support leg 12 has a double-cylinder structure in which an inner cylinder 18 is fitted into an outer cylinder 17 and is provided with screws 19 with handles provided on the outer cylinder 17 at a plurality of positions in the height direction of the inner cylinder 18. The screw is selectively screwed into one of the screw holes 20 so that the height position of the top plate 15 can be adjusted arbitrarily.
[0013]
However, the folding table 10 has the rotation shaft 22 of the lock lever 21 pivotally attached to the support brackets 13 provided at the left and right ends of the horizontal member 12A connecting the left and right support legs 12. The rotating shaft 22 is made of a single bar connecting the left and right lock levers 21, whereby the left and right lock levers 21 are always interlocked. The lock lever 21 is provided on the inner surface side of the support bracket 13 and includes a U-shaped grooved deployment lock claw 23 and a U-shaped grooved folding lock claw 24.
[0014]
On the other hand, the mounting frame 15 </ b> A of the top plate 15 includes a deployment locking pin 25 and a folding locking pin 26 to which the deployment lock claw 23 of the lock lever 21 can be engaged and disengaged.
[0015]
A spring 27 is provided around the rotation shaft 22 of the lock lever 21. The spring 27 locks the unfolded lock claw 23 and the foldable lock claw 24 of the lock lever 21 to a lock position where each of the unfolded lock pin 25 and the foldable lock pin 26 on the top plate 15 locks. The lever 21 is fired. One end of the spring 27 is engaged with the support bracket 13, and the other end is engaged with the lock lever 21, and applies the elastic force to the lock lever 21. The lock lever 21 is stopped from rotating by abutting the vertical outer edge portion 21A against the vertical surface of the above-mentioned transverse member 12A under the elastic force of the spring 27, and is maintained at the above-described locked position.
[0016]
The top plate 15 set to the unfolded position is mounted on the mounting frame 15A of the top plate 15 in a state where the unfolding lock claw 23 of the lock lever 21 applies a downward rotation force to the unfolding locking pin 25 on the top plate 15 side. With the lower surface abutting against the upper horizontal edge 13A of the support bracket 13, the deployment locking pin 25 on the top plate 15 is held in the groove of the deployment locking claw 23 of the lock lever 21 (or the deployment locking pin 25). Is held between the deployment lock claw 23 of the lock lever 21 and the U-shaped locking groove 13B of the support bracket 13) to maintain the top plate 15 in a horizontal posture (FIGS. 3 and 4C). ). Further, the top plate 15 set at the folding position is folded on the top plate 15 side in a state where the lock lever 21 is maintained at the lock position by abutting against the vertical surface of the horizontal member 12A as described above. The tatami lock pin 26 is held in the groove of the fold lock claw 24 of the lock lever 21 (or the fold lock pin 26 and the U-shaped lock groove 13C of the support bracket 13 and the fold lock claw 24 of the lock lever 21). , The top plate 15 is maintained in a vertical posture (FIG. 4A).
[0017]
In addition, the folding table 10 is provided with an operation lever 30 on the outer surface of one of the left and right support brackets 13 as shown in FIG. The operating lever 30 is coaxially supported at one end of the rotation shaft 22 of the lock lever 21 and is engaged with an engagement pin 28 provided around the rotation shaft 22 of the lock lever 21. A hole 31 is provided. The engagement pin 28 is disposed so as to be able to move laterally in an elongated hole 29 provided in the support bracket 13 located between the lock lever 21 and the operation lever 30. That is, when the user manually operates the operation lever 30 using the finger hooking operation section 30A, the lock lever 21 is rotated from the above-described locked position to the unlocked position against the elastic force of the spring 27. Will be. At this time, even if the operation lever 30 is engaged with only one of the lock levers 21 by the engagement pins 28, the left and right lock levers 21 are interlocked by the presence of the rotation shaft 22.
[0018]
In the folding table 10, the outer edge of the lock lever 21 around the deployment lock claw 23 is moved to the unlocked position by the abutting force exerted by the deployment locking pin 25 during the deployment of the top plate 15. (See FIG. 4 (B)). Further, a guide surface for rotating the lock lever 21 to the unlocked position side by the abutting force exerted by the folding locking pin 26 in the process of folding the top plate 15 is applied to the outer edge of the lock lever 21 around the folding lock claw 24. 42 (FIG. 4D).
[0019]
In the embodiment of the present invention, the operation lever 30 is not provided only on one of the left and right support brackets 13 but may be provided on both the support brackets 13. Further, one of the left and right lock levers 21 may not include the folding lock claw 24.
[0020]
Hereinafter, a method of using the folding table 10 will be described (FIG. 4).
(1) Unfolding operation of the table 10 <1> By manually operating the operation lever 30 to rotate the lock lever 21 to the unlocked position, the folding lock claw 24 of the lock lever 21 is folded on the top plate 15 side. While detaching from the locking pin 26, the user puts his hand on the top plate 15 and rotates the top plate 15 from the folded position to the deployed position side (FIGS. 4A and 4B). When the fold lock claw 24 is released from the fold lock pin 26, the hand is released from the operation lever 30, and the lock lever 21 is automatically returned to the lock position.
[0021]
{Circle around (2)} When the top plate 15 is rotated in the course of deployment of the top plate 15 according to the above <1>, the deployment locking pin 25 on the top plate 15 side becomes the guide surface 41 around the deployment lock claw 23 of the lock lever 21. (FIG. 4B), the lock lever 21 is once rotated to the unlocked side by the abutment force exerted by the deployment locking pin 25, and the deployment locking pin 25 is 23 and is introduced. The lock lever 21 having the deployment lock pin 25 introduced into the deployment lock claw 23 automatically returns to the locked position by the elastic force of the spring 27 and continues to hold the deployment lock pin 25 in the deployment lock claw 23, The top plate 15 is held at the deployed position in the horizontal posture (FIG. 4C).
[0022]
(2) Folding operation of the table 10 <1> By manually operating the operation lever 30 to rotate the lock lever 21 to the unlock position, the deployment lock claw 23 of the lock lever 21 is moved to the deployment position on the top plate 15 side. While detaching from the stopper pin 25, the user puts his hand on the top plate 15 and rotates the top plate 15 from the deployed position to the folding position side (FIGS. 4C to 4D). When the deployment lock claw 23 is released from the deployment lock pin 25, the hand is released from the operation lever 30, and the lock lever 21 is automatically returned to the lock position.
[0023]
{Circle around (2)} When the top plate 15 is rotated in the process of folding the top plate 15 according to the above <1>, the folding locking pin 26 on the top plate 15 side rotates around the folding lock claw 24 of the lock lever 21. The lock lever 21 is once rotated toward the unlocked position by the abutting force exerted by the fold lock pin 26, and the fold lock pin 26 is locked by the lock lever 26 (FIG. 4D). 21 and is inserted into the folding lock claw 24. The lock lever 21 in which the fold lock pin 26 is introduced into the fold lock claw 24 automatically returns to the lock position by the elastic force of the spring 27 and moves the fold lock pin 26 into the fold lock claw 24. The holding is continued, and the top plate 15 is held at the folding position in the vertical posture (FIG. 4A). The table 10 can save the storage space when not in use by holding the top plate 15 in this folding position.
[0024]
Therefore, according to the present embodiment, there are the following effects (1) and (2).
{Circle around (1)} When the top plate 15 is set to the deployed position, the deployment locking pin 25 on the top plate 15 is locked to the deployment lock claw 23 of the lock lever 21. Maintained by When the top plate 15 is set to the folding position, the fold lock pin 26 on the top plate 15 is locked to the fold lock claw 24 of the lock lever 21, and this lock state is caused by the elasticity of the spring 27. Maintained by vigor. Therefore, the top plate 15 can be locked at both the deployed position and the folded position. That is, the folded top plate 15 can be stably held, and the handleability can be improved.
[0025]
{Circle around (2)} The operation of applying the operation lever 30 to rotate the lock lever 21 to the unlocked position once against the resilience of the spring 27, and in the course of the deployment of the top 15, the deployment lock on the top 15 side When the pin 25 exerts an abutting force on the outer edge guide surface 41 of the lock lever 21 around the deployment lock claw 23, the abutment force rotates the lock lever 21 to the unlocked position once against the elastic force of the spring 27. As a result, the deployment locking pin 25 can be introduced into the deployment lock claw 23 of the lock lever 21. The lock lever 21 having the deployment lock pin 25 introduced into the deployment lock claw 23 is held at the lock position by the elastic force of the spring 27, and holds the top plate 15 at the deployment position. That is, by providing the outer edge guide surface 41 around the deployment lock claw 23 of the lock lever 21, the lock lever 21 is temporarily operated at an appropriate timing with the deployment operation of the top plate 15 without applying an operation force to the operation lever 30. By rotating to the unlocked position, the engagement between the deployment lock claw 23 and the engagement pin 25 can be obtained.
[0026]
Also, in the folding process of the top plate 15 after the lock lever 21 is once rotated to the unlock position against the elastic force of the spring 27 by the operation applied to the operation lever 30, the folding member on the top plate 15 side is also used. When the stop pin 26 exerts an abutting force on the outer edge guide surface 42 around the folding lock claw 24 of the lock lever 21, the abutting force causes the lock lever 21 to temporarily return to the unlocked position against the elastic force of the spring 27. As a result, the folding lock pin 26 can be introduced into the folding lock claw 24 of the lock lever 21. The lock lever 21 in which the folding locking pin 26 has been introduced into the folding lock claw 24 is held at the locked position by the elastic force of the spring 27, and holds the top plate 15 at the folded position. That is, by providing the outer edge guide surface 42 around the folding lock claw 24 of the lock lever 21, the lock lever 21 can be moved at an appropriate timing with the folding operation of the top plate 15 without applying an operating force to the operation lever 30. To temporarily rotate to the unlocked position, and the lock between the folding lock claw 24 and the lock pin 26 can be obtained.
[0027]
【The invention's effect】
As described above, according to the present invention, in the foldable table, the top plate can be locked at both the deployed position and the folded position.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an unfolded state of a folding table.
FIG. 2 is a schematic diagram showing a folding state of a folding table.
FIG. 3 is a schematic diagram showing a main part of FIG. 1;
FIG. 4 is a schematic diagram showing a change in the posture of the folding table.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Folding table 12 Support leg 14 Pivot shaft 15 Top plate 21 Lock lever 22 Rotating shaft 23 Deployment lock claw 24 Fold lock claw 25 Deployment lock pin 26 Fold lock pin 27 Spring 30 Operating lever 41, 42 Guide surface

Claims (2)

In a folding table in which a top plate is pivotally mounted on a pivot shaft provided on the upper portion of the support leg, and the top plate can be switched between an unfolded position and a folded position around the pivot shaft,
A pivot shaft of a lock lever is pivotally mounted on a support bracket provided on an upper portion of the support leg, and the lock lever includes a deployment lock claw and a folding lock claw,
Provide a deployment locking pin and a folding locking pin on the top plate side,
A spring which resiliently releases the lock lever to a lock position where the deployment lock claw and the fold lock claw of the lock lever respectively engage with the deployment lock pin and the fold lock pin on the top plate side, is provided around the lock lever. Provided in
A foldable table having an operation lever that enables the lock lever to rotate from the lock position to the unlock position against the elastic force of a spring ,
The lock lever includes left and right lock levers. The left and right lock levers are operatively connected by a single rotation shaft pivotally attached to the left and right support brackets, and one of the lock levers is a deployment lock claw and a folding lock claw. The other lock lever has at least a deployment lock claw,
The left and right lock levers are provided on the inner side of the left and right support brackets,
The operating lever is provided on at least one outer surface side of the left and right support brackets, and has an engagement hole provided around the rotation axis of the lock lever and engaged with an engagement pin disposed through a long hole of the support bracket. Foldable table featuring. An outer edge around the deployment lock claw of the lock lever serves as a guide surface for rotating the lock lever to the unlock position by an abutting force exerted by the deployment locking pin during the deployment of the top plate,
2. A guide surface for rotating the lock lever to the unlock position by an abutting force exerted by a folding locking pin in a process of folding the top plate at an outer edge around the folding lock claw of the lock lever. Folding table.

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