JP5518462B2 - Shock absorber and folding table - Google Patents

Description

  The present invention provides a shock absorber that is simple and can be manufactured easily and inexpensively, and can be reduced in size and weight and facilitated disposal, and the shock absorber can be used for folding and unfolding the top plate. The present invention relates to a folding table that can be easily operated and secured, can be manufactured easily and inexpensively, can be reduced in size and weight, and can be improved in design.

  Conventionally, as a folding table provided with a shock absorber for buffering the rotation of the top plate, for example, it is composed of a cylindrical damper main body filled with hydraulic oil in an oil chamber, and the main body is arranged directly under the top plate, The end face is attached to a mounting bracket that is integral with the top plate, the shaft that is integral with the internal wing is fixed to the top of the column, and the hydraulic oil moves smoothly when the top plate is folded, so that the top plate can be rotated quickly. On the other hand, there is one in which the movement of hydraulic oil is suppressed during the deployment of the top plate, and the rotation of the top plate is buffered (for example, see Patent Document 1).

In addition, as another folding table, there is provided a buffer cylinder mechanism, a so-called gas spring, in which a piston is slidably accommodated in a cylinder, and the cylinder mechanism is placed inside the pedestal of the folding table. The upper end of the piston rod is pivotally attached to the lock plate, and the lock plate is fixed to an interlocking shaft coaxial with the handle.
Then, when the top plate is folded, the handle is turned to release the lock of the lock plate, and it is pushed up by the elasticity of the spring built in the piston of the cylinder mechanism, and the hydraulic oil in the cylinder is moved slowly to move the top plate Folding and turning slowly, on the other hand, when the top plate is deployed, the handle is turned in the opposite direction to move the lock plate, the piston rod and piston are lowered, the hydraulic oil in the cylinder is moved quickly, There is one in which the top plate is moved horizontally and easily (see, for example, Patent Document 2).

However, the damper body and the shock absorbing cylinder mechanism are complicated and expensive in structure, and are generally large and heavy. Moreover, at the time of disposal, for example, it is troublesome to discharge the enclosed high-pressure gas. If you forgot, there was a problem such as explosion and injury.
On the other hand, the folding table having the damper body and the buffer cylinder mechanism is expensive and large in size because the buffer cylinder mechanism and the like are expensive and large in weight. There is a problem that the weight is increased and the width of the design is restricted.

Japanese Patent Laid-Open No. 10-211025 Japanese Utility Model Publication No. 6-58724

  The present invention solves such a problem, and the structure is simple, can be manufactured easily and inexpensively, and the shock absorber capable of reducing its size and weight and facilitating disposal, and the shock absorber can be folded and operated on the top plate. An object of the present invention is to provide a folding table which can be used for operation, can be smoothly operated and safe, can be easily manufactured at low cost, and can be reduced in size and weight and can be improved in design.

The invention according to claim 1, together with the movably accommodate the operating member to the main body expansion and the axial direction, in conjunction with one end of the actuating member to the load member, displaceable providing the load member, the interior of said body A movable body is movably accommodated in the axial direction, the operating member is movably accommodated in the movable body, and a stopper having a taper portion is provided on the movable body. The taper portion is disposed so as to be engageable inside the main body, the taper portion is provided so as to be engageable inside the main body when the operating member is moved, and the inner peripheral surface of the stopper is actuated when the load member is displaced. In the shock absorber provided so as to be able to be pressed on the peripheral surface and capable of braking or buffering the movement of the actuating member, two taper portions having different taper angles are provided on both sides in the movement direction of the stopper, According to the load of the load member, the one taper part is selected and arranged and selected. The taper part is arranged so that it can be engaged with the engagement part in the main body, and the taper part of the stopper is selected and used according to the load of the load member to adjust the braking action or buffering action on the actuating member In addition to providing smooth operation and safety, it can be easily and inexpensively manufactured without the need for high-pressure gas filling and hydraulic oil filling as before, and without special equipment. The configuration can be simplified and reduced in size and weight without requiring a dense structure, and high-pressure gas and hydraulic oil do not need to be discharged at the time of disposal, so that disposal can be performed safely and easily.

According to a second aspect of the invention, Te was selected movable body - Place the path portion in the moving direction of the stopper, te of the stopper in accordance with the load of the load member - changing the position of the path portion, the load member with respect to actuating member The braking action or the buffer action according to the load of the vehicle is adjusted so that smooth operation and safety can be obtained. The invention according to claim 3 is provided with a plurality of stoppers on the outer periphery of the movable body, The taper portion is arranged so as to be engageable with the inside of the main body, and the inner peripheral surface of each stopper is arranged to be able to be pressed against the peripheral surface of the operating member, and the braking or buffering action on the operating member is enhanced by a plurality of stoppers. I am doing so.
According to the invention of claim 4, an identification means is provided in either one of the two taper portions so as to prevent an assembly error of the stopper .
According to the invention of claim 5 , a planar rectangular engaging portion is formed on the inner side of the main body, and the operating member is disposed inside the engaging portion so as to be movable in the axial direction, and on the three sides of the engaging portion. projecting bead axially, the bead engageably disposed on the peripheral surface of the actuating member, and in so that moving smoothly and stably actuating member by three portions of the bead.

According to the sixth aspect of the present invention , a protective cap into which the actuating member can be inserted is disposed immediately above the movable body, the reduced diameter peripheral surface of the protective cap is fitted to the upper end portion of the main body, and the reduced diameter periphery of the protective cap is provided. A locking claw is projected on the surface, and the locking claw is attached to an engagement hole formed on the peripheral surface of the main body so as to be engageable from the inside, and the movable body in the main body is attached by a protective cap attached to the upper end portion of the main body. It is in so that to protect.
According to a seventh aspect of the present invention , a latch provided with a pair of fork pieces is detachably provided on the main body, the pair of fork pieces are detachably provided on the main body, and the hook is attached to the main body. At the time of mounting, the movable body is disposed on the fork piece so as to be engageable, the engagement between the selected taper portion of the stopper and the engagement portion inside the main body can be released, and the latching tool is attached to the main body. At the time of mounting, the insertion space of the operating member is secured inside the movable body, and the operating member can be easily and smoothly inserted from the outside.
According to the eighth aspect of the present invention , when the latching tool is mounted on the main body, the pressing of the inner peripheral surface of the stopper against the peripheral surface of the operating member can be released, and the operating member can be easily and smoothly inserted from the outside.

According to a ninth aspect of the present invention , when the latching tool is removed from the main body, the movable body is moved to the engaging portion side in the main body, and the selected taper portion of the stopper is engaged with the engaging portion in the main body. The stopper is provided so that the inner peripheral surface of the stopper can be pressed against the peripheral surface of the operating member, and the operating member can be braked or buffered .
According to the invention of claim 10, after the operating member is inserted into the inside of the main body and the movable body, the latching device can be removed from the main body so that substantial braking or buffering action on the operating member can be realized rationally. Yes.
According to the eleventh aspect of the present invention , a gripping portion is provided on the latching tool, the gripping portion is disposed so as to protrude outside the main body, and the gripping portion is held so that the latching tool can be easily removed .

The invention according to claim 12 is provided with a shock absorber provided with an actuating member that is extendable and movable in the axial direction, and the upper end of the actuating member is pivotally linked to an intermediate portion of the top plate 1. The upper end of the support frame is pivotably linked to one side end of the support frame, the lower end of the support frame is pivotally connected to the frame, and the movable body is pivoted inside the main body that partitions the shock absorber. The actuating member is movably accommodated in the movable body, a stopper having a taper portion is provided on the movable body, and the taper portion is engaged in the main body. A folding table in which the inner peripheral surface of the stopper can be pressed against the peripheral surface of the actuating member and the top plate can be folded, and the taper angle is set on both sides of the stopper in the moving direction. Two different taper portions are provided, and the one taper portion is selected and arranged in accordance with the load on the top plate. The selected taper part is arranged so as to be engageable with the engagement part in the main body, and the taper part of the stopper is selected and used according to the load on the top plate, and the braking action or the buffering action on the operating member is provided. Adjustable for smooth operation and safety , small and lightweight, easy and inexpensive without the need for expensive, large and heavy shock absorbers filled with high pressure gas or filled with hydraulic oil as before In addition, a small and lightweight shock absorber is arranged outside the support column to reduce the diameter of the support column and improve the overall design.

The invention according to claim 13 is provided such that a latch provided with a pair of fork pieces is detachably provided on the main body, and the movable body can be engaged on the fork piece when the latch is attached to the main body. It is possible to release the pressing of the inner peripheral surface of the stopper with respect to the peripheral surface of the operating member, and when the latching tool is removed from the main body, the movable body is moved to the engaging portion side in the main body, and the stopper is selected. The taper portion is provided so as to be engageable with the engaging portion inside the main body, the inner peripheral surface of the stopper is provided so as to be able to be pressed against the peripheral surface of the operating member, and when the latch is attached to the main body, The action or braking action can be stopped and the actuating member can be easily inserted or assembled to the movable body, and when the latch is removed from the main body, the cushioning action or the braking action by the shock absorber is reduced in function or function. Safe and smooth board folding and unfolding operations It is way.
According to the fourteenth aspect of the present invention, when the latching tool is detached from the main body and the top plate is folded and displaced, the actuating member is provided so as to extend and be displaced upward, and one of the taper portions of the stopper and the engaging portion inside the main body are provided. To release the engagement of the inner peripheral surface of the stopper with respect to the peripheral surface of the operating member, and the buffering action or braking action by the shock absorber is lost or reduced, and the operating member is easily and quickly extended. The top plate can be folded smoothly .

According to the fifteenth aspect of the present invention , when the latching tool is detached from the main body and the top plate is deployed and displaced, the actuating member is provided so as to be able to be reduced and displaced downward, and the selected taper portion of the stopper is disposed in the engaging portion inside the main body. , The inner peripheral surface of the stopper can be pressed against the peripheral surface of the operating member, the buffering action or braking action by the shock absorber is functioned to slowly contract the operating member, and the top plate can be deployed safely and slowly I am doing so.
According to a sixteenth aspect of the invention , when the top plate is folded, the operating member protrudes coaxially with the support column, and the operating plate and the top plate are parallel to each other by causing the top plate to move together with the upward movement of the operating member. placed, without requiring a conventional cam mechanism or a stopper, such as, and in so that folded top plate to simplify the structure compact and stable.

According to the first aspect of the present invention, two taper portions having different taper angles are provided on both sides in the moving direction of the stopper, and the one taper portion is selected according to the load of the load member. Since the selected taper portion is arranged so as to be able to engage with the engaging portion in the main body, the taper portion of the stopper can be selected and used according to the load of the load member, and the braking action on the operation member In addition to adjusting the buffering action, smooth operation and safety can be obtained, and it is possible to manufacture easily and inexpensively without requiring high-pressure gas filling and hydraulic oil filling as before, and without requiring special equipment. In addition, the structure can be simplified and reduced in size and weight without requiring an air-tight or oil-tight structure, and because disposal of high-pressure gas and hydraulic oil is not required at the time of disposal, disposal can be performed safely and easily.

A second aspect of the present invention, Te was selected movable body - because placing the path portion in the moving direction of the stopper, can adjust the braking action or damping action based on the load of the load member relative to the actuating member, smooth operation effect can be obtained safety and there Ru.
According to the invention of claim 3 , a plurality of stoppers are mounted on the outer periphery of the movable body, one taper portion of each stopper is disposed so as to be engageable with the inside of the main body, and the inner peripheral surface of each stopper is disposed on the operating member. Since it arrange | positions so that it can press on a surrounding surface, the damping | braking or buffering action with respect to an operation member can be strengthened with a some stopper .
In the invention of claim 4 , since the identification means is provided in either one of the two taper portions, it is possible to prevent assembly errors of the stopper.
According to the invention of claim 5 , a planar rectangular engaging portion is formed on the inner side of the main body, and the operating member is disposed inside the engaging portion so as to be movable in the axial direction, and on the three sides of the engaging portion. projecting bead in the axial direction, because arranged to be engageable with the bead on the peripheral surface of the actuating member, can Rukoto moved smoothly and stably actuating member by three portions of the bead.

According to the sixth aspect of the present invention , a protective cap into which the actuating member can be inserted is disposed immediately above the movable body, the reduced diameter peripheral surface of the protective cap is fitted to the upper end portion of the main body, and the reduced diameter periphery of the protective cap is provided. Since the locking claw is projected on the surface and the locking claw is attached to the engagement hole formed on the peripheral surface of the main body so as to be engageable from the inside, the movable body in the main body is protected by the protective cap attached to the upper end portion of the main body. can you to protect.
According to a seventh aspect of the present invention , a latch provided with a pair of fork pieces is detachably provided on the main body, the pair of fork pieces are detachably provided on the main body, and the hook is attached to the main body. Since the movable body is disposed on the fork piece so as to be engageable when mounted, the engagement between the selected taper portion of the stopper and the engagement portion inside the main body can be released. When the is attached to the main body, the insertion space of the operating member can be secured inside the movable body, and the operating member can be easily and smoothly inserted from the outside.
According to the eighth aspect of the present invention , since the pressing of the inner peripheral surface of the stopper against the peripheral surface of the operating member can be released when the latching tool is mounted on the main body, the operating member can be easily and smoothly inserted from the outside.

According to a ninth aspect of the present invention , when the latching tool is removed from the main body, the movable body is moved to the engaging portion side in the main body, and the selected taper portion of the stopper is engaged with the engaging portion in the main body. Since the inner peripheral surface of the stopper is provided so as to be pressed against the peripheral surface of the operating member, the operating member can be braked or buffered .
The invention of claim 10, after insertion inside the operating member body and the movable body, since the locking member and to be removable from the body, you rationally realize a substantial braking or cushioning action against the actuating member be able to.
In the eleventh aspect of the present invention , since the gripping portion is provided with the gripping portion, and the gripping portion protrudes outside the main body, the gripping portion can be held and the latching tool can be easily removed .

The invention according to claim 12 is provided with two taper portions having different taper angles on both sides in the moving direction of the stopper, and selects the one taper portion according to the load on the top plate to select the main body. It is possible to obtain smooth operation and safety by adjusting the braking action or the buffering action on the operating member by using the selected taper part of the stopper so that the engaging part can be engaged with the inner engaging part. As described above, it is possible to manufacture small and light weight easily and inexpensively without the need for expensive and large and heavy weight shock absorbers filled with high-pressure gas or filled with hydraulic oil. It can be arranged to reduce the diameter of the struts and improve the overall design.

The invention according to claim 13 is provided such that a latch provided with a pair of fork pieces is detachably provided on the main body, and the movable body can be engaged on the fork piece when the latch is attached to the main body. It is possible to release the pressing of the inner peripheral surface of the stopper with respect to the peripheral surface of the operating member, and when removing the hook from the main body, the movable body is moved to the engaging portion side in the main body, and the stopper is selected. The taper part is provided so as to be engageable with the engagement part inside the main body, and the inner peripheral surface of the stopper is provided so as to be able to press against the peripheral surface of the operating member. The action or braking action can be stopped and the actuating member can be easily inserted or assembled to the movable body, and when the latch is removed from the main body, the cushioning action or the braking action by the shock absorber is reduced in function or function. Safe and smooth board folding and unfolding operations It can cormorant.
According to the fourteenth aspect of the present invention, when the latching tool is detached from the main body and the top plate is folded and displaced, the actuating member is provided so as to extend and be displaced upward, and one of the taper portions of the stopper and the engaging portion inside the main body are provided. Is released and the pressure on the inner peripheral surface of the stopper can be released against the peripheral surface of the actuating member, so that the buffering action or braking action by the shock absorber disappears or decreases, and the actuating member can be easily and quickly extended. The top plate can be smoothly folded .

According to the fifteenth aspect of the present invention , when the latching tool is detached from the main body and the top plate is deployed and displaced, the actuating member is provided so as to be able to be reduced and displaced downward, and the selected taper portion of the stopper is disposed in the engaging portion inside the main body. Since the inner peripheral surface of the stopper can be pressed against the peripheral surface of the actuating member, the actuating member is slowly contracted by functioning a buffering action or a braking action by the shock absorber, and the top plate is safely and slowly Can be deployed .
According to a sixteenth aspect of the invention , when the top plate is folded, the operating member protrudes coaxially with the support column, and the operating plate and the top plate are parallel to each other by causing the top plate to move together with the upward movement of the operating member. Therefore, the configuration can be simplified and the top plate can be folded compactly and stably without requiring a conventional cam mechanism or stopper .

It is a perspective view which shows the use condition of a folding table provided with the buffering device of this invention. It is a right view of FIG. It is a perspective view which expands and shows the connection state of the support | pillar of the said folding table, a rear leg, a support frame, and a frame (horizontal frame). FIG. 5 is an enlarged front view showing the assembled state of the folding table support and the shock absorber, and a stopper is attached to the shock absorber. It is sectional drawing which follows the AA line of FIG.

FIG. 5 is a front view showing an enlarged assembled state of the folding table column and the shock absorber, with the hooks removed from the shock absorber. It is sectional drawing which follows the BB line of FIG. It is a perspective view which decomposes | disassembles and shows the shock absorber applied to this invention. It is a perspective view which shows the assembly state of the shock absorber applied to this invention. It is an expanded sectional view which follows the CC line of FIG.

It is an expanded sectional view which follows the DD line | wire of FIG. It is an expanded sectional view which follows the EE line of FIG. In a folding table provided with the buffer device of the present invention, it is an expanded sectional view showing the state in the middle of folding of a top plate. It is a perspective view which shows the folding state of the top plate of a folding table provided with the buffering device of this invention. In a folding table provided with the buffer device of the present invention, it is a right side view showing a folded state of the top plate.

In a folding table provided with the buffer device of the present invention, it is an expanded sectional view showing a state in the middle of deployment of a top plate.

  Hereinafter, an example of the shock absorber of the present invention and an example of a folding table to which the shock absorber is applied will be described with reference to the illustrated embodiment. In FIGS. 1 to 16, 1 is a top plate which is a horizontally long load member. The pair of support frames 2 and 3 are attached to the front and middle portions of the back surface so as to be separated from each other in the front-rear direction, and trapezoidal brackets 4 and 5 are fixed to both ends of the support frames 2 and 3, respectively. The upper ends of the support frames 6 and 7 are rotatably connected to the lower end of 5.

Among these, the lower end portion of the front support frame 6 is rotatably connected to a projecting piece to be described later, the rear support frame 7 is made of aluminum square tube material, and the support frame 7 is a shock absorber described later. It corresponds to an operating member, and the lower side thereof is inserted into a column 8 made of aluminum square tube material so as to be movable up and down.
When the top plate 1 is deployed, that is, when the top plate 1 is used, the lower end portion of the support frame 7 can be brought into contact with a locking portion (not shown) below the support column 8 so that the top plate 1 can be used. The horizontal state can be maintained.
In this case, the support frame 7 is not limited to a prism or a square tube, but may be configured as a cylinder or a circular tube.

  The support column 8 is disposed obliquely on the top plate 1 via brackets 4 and 5, and is disposed obliquely upward on a floor surface to be described later, the lower portion also serves as a front leg, and the lower end portion thereof is the top plate 1. The caster 9 is attached to the lower end of the floor 10 so as to be able to travel.

  A pair of frame joints 11 made of aluminum die casting is attached to the middle and high positions of the column 8 as shown in FIG. 3, and the joint 11 includes a groove 11a that can be engaged with the column 8, and the groove 11a. A leg joint (not shown) is integrally formed on the outer side of the groove, and an overhang joint (not shown) is integrally formed on the inner side of the concave groove 11a. One end is screwed.

Further, the pair of overhang joints are inserted into the box joint 13 and are screwed together with a horizontal frame described later.
That is, the box joint 13 is resin-molded into a substantially rectangular tubular shape, a rectangular tubular horizontal frame 14 as a frame is inserted into the joint 13, and the pair of overhang joints are inserted into the horizontal frame 14. Screwed together with screws.
A pair of projecting pieces 15 are integrally formed at the upper end portion of the box joint 13, and the lower end portion of the support frame 6 is rotatably connected between the projecting pieces 15 and 15.

The other end portion of the rear leg 12 is disposed directly below the rear end portion of the top plate 1, and a caster 16 is attached to the end portion so as to be able to travel on the floor surface 10.
In the figure, 17 is a handle provided at the rear end of the back surface of the top plate 1, 18 is a shelf frame attached to both sides of the back surface of the top plate 1, and 19 is an installation frame spanned between the shelf frames 18 and 18.

  A shock absorber 20 is provided at the upper end portion of the support column 8, and the device 20 has a main body 21 attached to the upper end portion of the support column 8, a movable body 22 provided inside the main body 20 so as to be movable up and down, and the movable body. A stopper 23 provided on the upper end of the main body 20, a protective cap 24 attached to the upper end of the main body 20, and the support frame 7 are inserted into the main body 21 before assembling, and the support frame 7 is inserted inside the movable body 22. And a latch 25 that is an auxiliary tool.

The body 21, for example, polyacetal - by Le (POM), are molded into a square tubular large minor differences diameter, fitted with a top end of the pillar 8 to the outer periphery of the small diameter portion 21a, the the hole 4 6 of the inner The support frame 7 is inserted with sufficient margin.
A tongue piece 26 is notched and formed on one side of the small-diameter portion 21a by a substantially U-shaped groove 26a, and a restoring force in the plate thickness direction is applied to the tongue piece 26 to engage an engagement protrusion and a through hole, which will be described later. It is possible.
An engaging protrusion 27 is provided at the lower end of the tongue piece 26 and is provided so as to be engageable with a through hole 28 provided in the upper part of the column 8 to prevent the column 8 and the main body 21 from coming off. doing.

  On the other hand, a pair of hook-shaped engagement grooves 29 are formed on one side of the large-diameter portion 21b, in the embodiment, on the lower side of one side located on the upper side during assembly, and on the upper side of the pair of sides adjacent to the side. A horizontally long engagement hole 30 that can be engaged with a locking claw, which will be described later, is formed to face each other.

  The movable body 22 is resin-molded into a rectangular tube having a smaller diameter and shorter than that of the main body 21, and the support frame 7 can be inserted into the interior with a sufficient margin. It is accommodated inside the large diameter portion 21b so as to be movable up and down. In the figure, reference numeral 22 a denotes a notch formed in a mountain shape formed on a pair of lower end surfaces of the movable body 22.

A fitting groove 31 opening inward is formed on one side of the thickness of the movable body 22 facing one side of the large-diameter portion 21b, and vertically long spring accommodating holes 32 are formed on both sides of the outer peripheral portion of the one side. A locking pin 33 is formed at the bottom of the receiving hole 32.
A spring 34 is accommodated between the spring accommodation hole 32 and a later-described spring accommodation hole formed in the protective cap 24, and the movable body 22 is urged downward by the elasticity of the spring 34.

The stopper 23 has a low coefficient of friction and excellent wear resistance, and is molded into a substantially chevron shape with a synthetic resin different from that of the main body 21, such as nylon (registered trademark). It is possible to prevent seizure due to frictional heat at the time of engagement with the overhanging engagement portion 47, the chevron is fitted into the fitting groove 31 with the chevron facing outward, and a locking groove at the top of the chevron 35 is formed.
A through hole 36 is formed at the center of the locking groove 35, and an engaging pin 37 protruding from the bottom of the fitting groove 31 is inserted into the through hole 36 to prevent the stopper 23 from coming off.

The inner surface of the stopper 23 is formed as a smooth flat surface 23 a, and the flat surface 23 a is disposed so as to be in contact with the outer peripheral surface of the support frame 7.
Taper portions 38 and 39 that are inclined upward or downward are formed at the upper and lower end portions of the chevron portion of the stopper 23. These taper angles are different, and the top corresponding to the load of the shock absorber 20 is formed. Depending on the weight of the plate 1, the taper portions 38 and 39 are selected and shared with various folding tables.
In the embodiment, any one of the taper portions, for example, the taper portion 38, is provided with identification means such as a through hole 38a to prevent an assembly error.

In the case of the embodiment, the taper angle of the taper portion 38 is formed larger than that of the taper portion 39, and the taper portion having a small taper angle is provided for the top plate 1 having a large weight. 39 is arranged on the lower side to be engaged with the engaging portion 47, and a large engagement force or contact surface pressure is applied to the peripheral surface of the support frame 7 through the flat surface 23a to form a large buffering force or braking force. I have to.
In this case, it is possible to apply a buffering force by the stopper 23 of either the left or right support frame 7 to the top plate 1 having a small weight and omit the stopper 23 from the buffer device 20 of the other support frame 7. It is.

When the latch 25 is mounted on the main body 21, the movable body 22 is pushed up by engaging with the fork piece 44 of the latch 25 as will be described later, and moves the flat surface 23a of the stopper 23 outward. In addition, a space in which the support frame 7 can be inserted can be formed in the main body 21.
Then, after removing the latch 25 from the main body 21 and inserting the support frame 7 into the main body 21, the taper portion 39 is engaged between the outer peripheral surface of the support frame 7 and the engaging portion 47 having a flat rectangular shape. By the wedge effect, the flat surface 23a of the stopper 23 is pressed against the outer peripheral surface of the support frame 7 so that the movement of the support frame 7 can be braked.

The protective cap 24 is resin-molded into a short rectangular tube that can be inserted into the main body 21. A locking claw 40 that can engage with the engaging hole 30 is formed on the outer peripheral surface of the protective cap 24. A spring accommodating hole 41 and a locking pin are formed, and the upper end portion of the spring 34 can be accommodated in the spring accommodating hole 41.
In the figure, reference numeral 42 denotes a rectangular tubular flange portion formed at the upper end portion of the protective cap 24. A concave groove 43 is formed at the center of the inner surface of one side where the spring accommodating hole 41 is formed.

The hook 25 is formed by resin-molding a pair of fork pieces 44, and has a chevron-shaped convex portion 44a engageable with the notch 22a on the upper surface thereof. Has a saddle shape.
The length of the fork piece 44 is slightly longer than the facing distance of the inner surface of the main body 21, the lower end surface of the movable body 22 is placed on the convex portion 44a, and can be engaged with the notch portion 22a. I have to. In the figure, reference numeral 45 denotes a gripping part protruding from the outer side of the latching tool 25.

  The hook 25 is attached to the main body 21 by inserting the fork piece 44 into the engaging groove 29 before the support frame 7 is inserted, and the movable body 22 is placed on the fork piece 44 to stop. 23 is moved, and the flat surface 23a of the stopper 23 is displaced outward.

In addition, reference numeral 48 in the figure denotes a bead protruding along the axial direction on one side of the engaging portion 47, and is disposed so as to be engageable with both side surfaces of the taper portion 39. The movement of 39 can be regulated.
Reference numeral 49 denotes a bead protruding in the axial direction on three sides of the engaging portion 47 and is arranged to be engageable with the outer peripheral surface of the support frame 7 so that the support frame 7 can be centered.

  In the folding table of this embodiment, the support frames 6 and 7 and the support column 8 are arranged obliquely, but the support frame 7 and the support column 8 are arranged vertically and the shock absorber 20 is arranged vertically. With such use, the shock absorber 20 can be used, for example, as a shock absorber for adjusting the vertical position of the seating portion of the chair in addition to the folding table.

  The main part of the shock absorber of the present invention configured as described above is composed of the main bodies 21 and 22, the stopper 23, the protective cap 24 and the latching tool 25, and these are resin-molded. This can be manufactured inexpensively, easily and uniformly.

Next, when assembling these, as shown in FIG. 8, first, the fork piece 44 of the hook 25 is inserted into the engaging groove 29 of the main body 21, and the lower end of the fork piece 44 is inserted into the main body 21. Thereafter, the movable body 22 is inserted into the main body 21 with the spring accommodating hole 32 directed to one side of the engagement groove 29, and the notch 22a at the lower end of the movable body 22 is inserted into the fore portion. It engages and accommodates the convex part 44a of the hook piece 44.

At this time, the chevron portion of the stopper 23 is fitted in the fitting groove 31 of the movable body 22 in advance, and the engagement pin 37 protruding from the bottom of the fitting groove 31 is formed in the through hole 36 formed in the locking groove 35. Is inserted, and the stopper 23 is hooked on the fitting groove 31.
When the stopper 23 is assembled, the taper portions 38 and 39 of the stopper 23 are selected and assembled according to the weight of the top plate 1 corresponding to the load of the shock absorber 20.

That is, the taper angles of the taper portions 38 and 39 are formed differently, and when the weight of the top plate 1 is large, a large buffering force or braking force is required. Therefore, the taper with the smaller taper angle is required. If the weight of the top plate 1 is small and the top plate 1 is small, a small taper force or braking force is sufficient, and the taper portion 38 having a larger taper angle is disposed on the lower side.
In the embodiment, since the weight of the top plate 1 is large, a large buffering force or a braking force is required, and the taper portion 39 having a smaller taper angle is disposed on the lower side.

After the spring 34 is inserted into the spring accommodating hole 32 of the movable body 22, the protective cap 24 is inserted into the upper end portion of the main body 21, the upper end portion of the spring 34 is accommodated in the spring accommodating hole 41, and the locking claw 40 is By engaging with the engagement hole 30 of the main body 21 from the inside and connecting to the main body 21, a series of assembly of the shock absorber 20 is completed.
As described above, the assembly of the shock absorber 20 requires only a simple operation of inserting and engaging each component member, and does not require high-pressure gas or hydraulic oil sealing as in the conventional shock absorber. It can be done easily and quickly without the need for equipment.

The shock absorber 20 assembled in this way is as shown in FIG. 9 and is formed in a substantially prismatic shape having a total length of 70 mm and a side of about 30 mm, and is very small and light compared to a shock absorber such as a conventional gas spring. Handling such as storage becomes convenient.
In addition, since the shock absorber 20 can omit the mounting of the support frame 7 that is an operation member at the end of the assembly, the size and weight can be improved and the handling becomes more convenient.

Before the shock absorber 20 is mounted, that is, before the folding table is assembled, it is handled separately from the support frame 7 that is an operating member as described above, and the support frame 7 is inserted into the main body 21 or the movable body 22. Absent.
Then, after assembling the shock absorber 20, the fork piece 44 of the latch 25 is inserted into the main body 2, and the movable body 22 is engaged and pushed up on the fork piece 44 and attached to the movable body 22. lower Te stopper 23 - Pas portion 39 comes into contact with one side of the engaging portion 47, Te - tip of the path portion 39 is engageably inserted into the through hole 4 6.

  When using such a shock absorber 20, the support frame 7 is inserted into the main body 21 or the movable body 22, and one end of the support frame 7 is disposed below the main body 21 as a free end that can be brought into contact with the column 8. The other end is projected to the outside of the main body 21, and the projecting portion is linked to an action member such as the top plate 1.

When the support frame 7 is inserted into the main body 21 or the movable body 22, with the latch 25 attached to the main body 21, that is, with the insertion space for the support frame 7 secured inside the movable body 22, The support frame 7 is inserted from above the protective cap 24 or from below the small diameter portion 21 a of the main body 21.
Then, the support frame 7 is inserted into the movable body 22 and protrudes from the protective cap 24, and an appropriate position of the protrusion is directly or indirectly connected to an action member such as the top plate 1, and the lower end is connected to the outside of the main body 21. To place.
As described above, since the latching tool 25 is attached to the main body 21 and the insertion space of the support frame 7 is secured inside the movable body 22, the support frame 7 can be easily and quickly inserted.

In this way, after a part of the support frame 7 is directly or indirectly connected to the top plate 1 or the like, the gripping portion 45 is held and pulled outward, the fork piece 44 is pulled out from the engagement groove 29, and the latch 25 Is removed from the main body 21.
In this way, the fork piece 44 is pulled out of the engagement groove 29, and the movable body 22 is pushed down by the spring 34 by the height of the fork piece 44 and moves along the support frame 7. The stopper 23 moves together and the lower taper 39 moves downward.
For this reason, the flat surface 23 a of the stopper 23 moves to the inside of the main body 21 by an amount corresponding to the downward displacement of the taper portion 39, and presses the outer peripheral surface of the opposing support frame 7.

That is, this situation corresponds to a state in which the taper portion 39 is inserted as a wedge between the outer peripheral surface of the support frame 7 and one side of the inner surface of the engaging portion 47, and the contact surface pressure of the stopper 23 is reduced. It acts on the outer peripheral surface of the opposing support frame 7 via the flat surface 23a, and provides a buffering or braking action.
In this case, the movable body 22 of the embodiment is provided with a stopper 23 on one side, and the flat surface 23a is in close contact with one side of the outer peripheral surface of the support frame 7, but the stopper 23 is provided on the opposite side or each side of the movable body 22. It is also possible to enhance the buffering or braking action by providing each flat surface 23a in close contact with the outer peripheral surface of the support frame 7.

  However, when the shock absorber 20 is installed obliquely as in the embodiment, and the main bodies 21 and 22 and the support frame 7 are arranged obliquely, the stopper 23 positioned above the support frame 7 is supported by gravity. Since it moves to the frame 7 side and its flat surface 23a is brought into close contact with the outer peripheral surface on the upper side of the support frame 7, the buffering or braking action by the stopper 23 is enhanced compared to the case where the shock absorber 20 is installed vertically, Even in the embodiment in which the stopper 23 is provided on the upper side of the movable body 22, the desired buffering or braking action can be obtained.

In this way, after removing the latch 25 from the main body 21, the support frame 7 is moved up and down to obtain a specific buffering or braking action by the stopper 23.
For example, when the top plate 1 is folded, the top plate 1 is held and rotated upward, and when the support frame 7 is moved and moved upward, the stopper 23 is slightly lifted by friction by the support frame 7, As much as the displacement, the flat surface 23a moves outward and moves away from the outer peripheral surface of the support frame 7. As a result, the buffering or braking action by the stopper 23 disappears or decreases, and the top plate 1 can be folded easily and quickly. .

On the other hand, when the top plate 1 is folded and used after being folded, the handle 17 is held and the top plate 1 is rotated downward, and the support frame 7 is moved in the same direction to move the support plate 7 downward. 23 is pulled down by the friction of the support frame 7, and the flat surface 23 a moves inward by an amount corresponding to the downward displacement of the taper 39 to press the outer peripheral surface of the support frame 7.
That is, this situation corresponds to a state in which the taper portion 39 is inserted as a wedge between the outer peripheral surface of the support frame 7 and one side of the inner surface of the engaging portion 47, and the contact surface pressure is flattened by the stopper 23. It acts on the outer peripheral surface of the opposing support frame 7 via the surface 23a, and provides a buffering or braking action.

Accordingly, the downward movement of the support frame 7 is braked and decelerated, the top plate 1 slowly rotates downward, and the lower end portion of the support frame 7 comes into contact with a locking portion (not shown) in the column 8. It stops and maintains the horizontal state of the top plate 1.
In this case, a part of the peripheral surface of the support frame 7 engages with the convex portion 49 and is centered, and the movement of the stopper 23 in the left-right direction is restricted by the convex portions 48 and 48 so that they move smoothly.

  As described above, the shock absorber 20 of the present invention is small and light and can be manufactured at low cost. When the support frame 7 as an operating member is moved upward, the shock absorber or the braking action is released or lowered to reduce the support frame 7. The top plate 1 can be folded easily and quickly, while the support frame 7 is moved downward, the buffering or braking action is restored or strengthened, and the support frame 7 is moved down safely and slowly. The top plate 1 can be unfolded slowly.

  In addition, when disposing of the shock absorber 20 of the present invention due to functional deterioration due to aging, the folding table is disassembled and taken out and discarded as it is or each component is disassembled or disassembled for disposal. In any case, since the shock absorber 20 is small and light, it is easy to handle, and there is no hassle of discharging high-pressure gas or hydraulic oil sealed like a conventional shock absorber, and there is a problem of explosion accident or injury when this is forgotten. Because there is no, it can be safely disposed of.

On the other hand, when the folding table of the present invention having the shock absorber 20 is shipped before assembling, it is divided into a plurality of assemblies and shipped together.
For example, the shock absorber 20 is assembled as described above, and the upper end of the protective cap 24 is opened with the latch 25 attached to the main body 21 and the support frame 7 not attached to the shock absorber 20.

And the upper end part of the support | pillar 8 is fitted to the small diameter part 21a of the said buffering device 20, the engagement protrusion 27 of the tongue piece 26 is engaged with the through-hole 28, and both are connected.
At that time, when the engaging protrusion 27 is engaged with the inner surface of the support column 8, the tongue piece 26 is displaced to the inside of the small diameter portion 21a to allow the engagement, and after the engaging protrusion 27 is engaged with the through hole 28, The tongue piece 26 is restored to the outside by elasticity, and the engagement protrusion 27 engages with the through hole 28 to connect the main body 21 and the column 8.

Next, a caster 9 is attached to the lower end portion of the support column 8, a pair of frame joints 11 is attached to an intermediate position of the support column 8, and a box joint 13 is inserted into one end portion of the joint 11 and screwed. The lower end portion of the support frame 6 is rotatably connected between the projecting pieces 15 and 15.
Then, both end portions of the horizontal frame 14 are inserted into the box joints 13 of the pair of support column assemblies, and these are fastened together with screws.
A pair of left and right support frames 2, 3 and a handle 17 are attached to the back surface of the top plate 1, brackets 4 are attached to both ends of the one support frame 3, and the upper end portion of the support frame 6 is rotated to the bracket 4. Assemble the top plate assembly to the support assembly.

On the other hand, the other bracket 5 is separated without being attached to the top plate 1, and the upper end portion of the support frame 7 is rotatably connected to the bracket 5, and the rear leg 12 is separated without being attached to the support column 8, A caster 10 is attached to the rear end, and the assembly of the support frame 7 and the rear leg 12 is packed together with the top plate assembly.
At that time, the support frames 6 and 6 are rotated about the projecting pieces 15 and 15, and the top plate 1 is rotated about the bracket 4. Are placed in parallel, and the top plate assembly is folded compactly to achieve a compact packaging. This situation is similar to the folding situation of the folding table of FIG.

When assembling the packaging parts, the lower end portion of the support frame 7 is inserted into the upper surface opening of the protective cap 24 and inserted below the support column 8, and the upper end portion of the support frame 7 can be rotated to the bracket 5. The bracket 5 may be attached to a predetermined position on the back surface of the top plate 1 and one end of the rear leg 12 may be screwed to the outside of the frame joint 11.
In this case, since the latching tool 45 is attached to the shock absorber 20 and the insertion space for the support frame 7 is secured inside the movable body 22, the support frame 7 can be inserted easily and quickly.

The folding table assembled in this way is as shown in FIGS. 1 and 2, and the shock absorber 20 is arranged on the outside of the strut 8. Therefore, in combination with the reduction in size and weight of the shock absorber 20, the shock absorber 20 is attached to the strut 8. The diameter of the support column 8 can be reduced as compared with the case where the support 8 is arranged on the inside, and the design and weight of the folding table can be improved.
In this case, even if the shock absorber 20 is disposed outside the support column 8, the shock absorber 20 is small in size, so there is no sense of incongruity and the appearance of the folded table is not impaired.
In addition, since the folding table does not have a cam mechanism for regulating the unfolded position and the folded position of the top plate 1, the number of parts is reduced correspondingly and the configuration is simplified.

On the other hand, as shown in FIGS. 4 and 5, the folding table 25 immediately after assembly is provided with a hook 25 on the shock absorber 20, and the stopper 23 and the support frame 7 are separated from each other so that the shock absorber 20 cannot function. Therefore, it is necessary to remove the hook 25 in actual use.
In order to remove the latching tool 25, the gripping portion 45 is held and pulled outward, and the fork piece 44 is pulled out of the engaging groove 29.

In this way, the fork piece 44 is pulled out from the main body 21, and the movable body 22 is pushed down by the spring 34 by the height of the fork piece 44 and moves along the support frame 7. Move together, and the lower taper 39 moves downward.
This situation is as shown in FIGS. 6 and 7, and the flat surface 23 a of the stopper 23 moves to the inside of the main body 21 by an amount corresponding to the downward displacement of the taper 39 and presses the outer peripheral surface of the opposing support frame 7.

  That is, this situation corresponds to a state in which the taper portion 39 is inserted as a wedge between the outer peripheral surface of the support frame 7 and one side of the inner surface of the engaging portion 47, and the contact surface pressure of the stopper 23 is reduced. It acts on the outer peripheral surface of the opposing support frame 7 via the flat surface 23a, and provides a buffering or braking action.

  In this case, the movable body 22 of the embodiment is provided with a stopper 23 on one side and the flat surface 23a is pressed against one side of the outer peripheral surface of the support frame 7, but the stopper 23 is provided on the opposite side or four sides of the movable body 22. The flat surfaces 23a can be brought into close contact with the outer peripheral surface of the support frame 7 to enhance the buffering or braking action.

  However, when the shock absorber 20 is installed obliquely as in the embodiment and the inner main bodies 21 and 22 and the support frame 7 are arranged obliquely, the stopper 23 positioned on the upper side of the support frame 7 is caused by gravity. Since it moves to the support frame 7 side and the flat surface 23a is brought into close contact with the outer peripheral surface of the upper side of the support frame 7, the buffering or braking action by the stopper 23 is enhanced compared to the case where the shock absorber 20 is installed vertically, Even if a stopper 23 is provided on one side of the upper side of the movable body 22, the desired buffering or braking action can be obtained.

Thus, after removing the latching tool 25 from the main body 21, the support frame 7 is moved up and down to obtain an actual buffering or braking action by the stopper 23.
For example, when the top plate 1 is folded, if the handle 17 is held and the top plate 1 is turned upward about the pivoting portion of the upper end portion of the support frame 6, the support frame 7 is drawn upward from the shock absorber 20. The stopper 23 is slightly lifted by the friction of the support frame 7, and the flat surface 23 a moves outward by an amount corresponding to the displacement and is separated from the outer peripheral surface of the support frame 7.

  This situation is as shown in FIG. 13. The taper 39 is slightly pulled out from between the support frame 7 and the engaging portion 47, and the wedge effect is reduced or eliminated, and the buffering or braking action by the taper 39 is reduced. The top plate 1 can be folded easily and quickly after dropping or disappearing.

  Thus, when the top plate 1 is rotated upward and the support frame 7 protrudes upward, the rear end portion of the top plate 1 is raised, the front end portion thereof is drawn toward the support column 8, and the support frame 6 is protruded 15. Is pivoted toward the column 8 side, the top plate 1 is moved to a position parallel to the column 8, and the support frame 6 is moved to a position parallel to the column 8, the top plate 1 stops rotating. The top plate 1 and the support column 8 or the support frame 7 and the support frame 6 are positioned in parallel, and the top plate 1 is folded.

  This situation is as shown in FIG. 14 and FIG. 15, and the four-node rotation link formed by the pivoting portion at the upper end portion of the support frame 6 with the top plate 1 and the support column 8 or the support frame 7, the support frame 6, and the projecting piece 15. The folding position of the top board 1 is maintained unless a force in a certain direction is applied to the pivoting portion at the ideal point of the mechanism.

On the other hand, when the top plate 1 is folded and used after being folded, if the top plate 1 is pulled down with the handle 17 held and the pivoting portion of the upper end of the support frame 7 as a fulcrum, the front end of the top plate 1 The part pivots upward with the pivot part as a fulcrum, the upper end of the support frame 6 is pulled obliquely upward, and the support frame 6 pivots forward about the pivot part of the projecting piece 15.
When the top plate 1 is further pulled down and the support frame 6 is further rotated forward, the weight and the pulling force of the top plate 1 efficiently act on the support frame 7 via the bracket 5, and the support frame 7 is pushed down. It moves inside the shock absorber 20.

In this way, the stopper 23 is pulled down by the friction of the support frame 7, the taper portion 39 is pushed between the support frame 7 and the engagement portion 47, and the taper portion 39 is equivalent to the downward displacement, The flat surface 23a moves inward and presses the outer peripheral surface of the support frame 7.
That is, this situation corresponds to a state in which the taper portion 39 is inserted as a wedge between the outer peripheral surface of the support frame 7 and the inner surface of the engaging portion 47, and the contact surface pressure is set to the flat surface 23 a of the stopper 23. It acts on the outer peripheral surface of the support frame 7 which opposes, and buffers or brakes the downward movement of the support frame 7.
At that time, a part of the peripheral surface of the support frame 7 engages with the convex portion 49 and is centered, and the movement of the stopper 23 in the left-right direction is restricted by the convex portions 48 and 48 so that they move smoothly.

  Accordingly, the support frame 7 is braked and slowly moves downward, the top plate 1 slowly rotates upward, and the lower end portion of the support frame 7 comes into contact with a locking portion (not shown) in the column 8. By the way, it stops and the support frame 6 stops rotating, supports the top plate 1 and maintains its horizontal state. This situation is as shown in FIGS.

  As described above, the folding table of the present invention folds the top plate 1 easily and quickly by losing or reducing the function of the shock absorber 20 when the top plate 1 is folded by the small, lightweight and inexpensive shock absorber 20. Further, when the top plate 1 is used, the shock absorber 20 is functioned so that the top plate 1 can be deployed safely and slowly.

  The shock absorber according to the present invention is simple in structure and can be manufactured easily and inexpensively, and can be reduced in size and weight and facilitated disposal. The folding table according to the present invention can be used to fold the shock absorber into a top plate. It can be used for operation and unfolding operation to ensure smooth operation and safety, can be manufactured easily and inexpensively, and can be reduced in size and weight and improved in design.

1 Load member (top plate)
6 Support frame 7 Actuating member (support frame)
14 Frame (horizontal frame)
20 shock absorber 21 body 22 movable body

23 Stopper 25 Hook 38, 39 Taper part 44 Fork piece 47 Engagement part

Claims (16)

An operating member is accommodated in the main body so that it can expand and contract and move in the axial direction, one end of the operating member is linked to a load member, the load member is provided so as to be displaceable, and the movable body is axially disposed inside the main body. The actuating member is accommodated in the movable body, the actuating member is accommodated in the movable body in the axial direction, a stopper having a taper portion is provided on the movable body, and the taper portion is engaged in the main body. The taper portion is provided so that it can be engaged with the inside of the main body when the operating member is moved, and the inner peripheral surface of the stopper can be pressed against the peripheral surface of the operating member when the load member is displaced. In the shock absorber provided with braking and buffering of the movement of the actuating member, two taper portions having different taper angles are provided on both sides in the movement direction of the stopper according to the load of the load member. The one taper part is selected and arranged, and the selected taper part is Damping device, characterized in that arranged to be engageable with the engaging portion of the inner. 2. The shock absorber according to claim 1, wherein the taper portion selected as the movable body is disposed on the moving direction side of the stopper . A plurality of stoppers are mounted on the outer periphery of the movable body, and one taper portion of each stopper is arranged to be engageable inside the main body, and the inner peripheral surface of each stopper can be pressed against the peripheral surface of the operating member. The shock absorber according to claim 1 arranged . 2. The shock absorber according to claim 1 , wherein an identification means is provided on one of the two taper portions . A planar rectangular engaging portion is formed on the inner side of the main body so as to protrude, and an actuating member is disposed inside the engaging portion so as to be movable in the axial direction, and a bead projects in the axial direction on three sides of the engaging portion. The shock absorber according to claim 1 , wherein the bead is disposed so as to be engageable with the peripheral surface of the operating member . A protective cap into which the operating member can be inserted is disposed immediately above the movable body, the reduced diameter peripheral surface of the protective cap is fitted to the upper end portion of the main body, and a locking claw is provided on the reduced diameter peripheral surface of the protective cap. 2. The shock absorber according to claim 1, wherein the shock absorber is protruded and attached to an engagement hole formed on a peripheral surface of the main body so as to be engageable from the inside . A hook provided with a pair of fork pieces on the main body is detachably provided, and the pair of fork pieces are provided on the main body so that the hook can be inserted and removed. The shock absorber according to claim 6 , wherein the movable body is arranged on a piece so as to be engageable, and the engagement between the selected taper portion of the stopper and the engagement portion inside the main body can be released . The shock absorber according to claim 7 , wherein the stopper can be released from the inner peripheral surface of the stopper when the hook is attached to the main body . When removing the latch from the main body, the movable body is moved toward the engaging portion in the main body so that the selected taper portion of the stopper can be engaged with the engaging portion inside the main body. The shock absorber according to claim 7 , wherein the inner peripheral surface of the actuator is pressable against the peripheral surface of the actuating member . The body and after insertion of the actuating member on the inner side of the movable body, damping device according to claim 7, wherein the removable said latching device from the body. The shock absorber according to claim 7, wherein a grip portion is provided on the hook, and the grip portion is disposed so as to protrude outside the main body . A shock absorber equipped with an actuating member that can be expanded and contracted and moved in the axial direction is provided on the support column, the upper end of the actuating member is pivotally linked to the middle part of the top plate, and the support frame is attached to the side end of the top plate. An upper end portion is linked to be rotatable, a lower end portion of the support frame is pivotally connected to the frame body, a movable body is accommodated in the body defining the shock absorber so as to be movable in an axial direction, The operation member is accommodated in the movable body so as to be movable in the axial direction, a stopper provided with a taper portion is provided on the movable body, and the taper portion is disposed so as to be engageable with the inside of the main body. In the folding table in which the inner peripheral surface of the stopper is provided so as to be pressed against the peripheral surface of the operating member, and the top plate can be folded, two tapes with different taper angles on both sides in the moving direction of the stopper. -Providing a taper portion, selecting and arranging the one taper portion according to the load on the top plate, and selecting the selected taper portion; Folding characterized by being arranged to be engageable with the engaging section of the main Te - Bull. A hook provided with a pair of fork pieces on the main body is detachably provided, and when the hook is attached to the main body, the movable body is disposed on the fork piece so as to be engageable, and an operating member. The pressing of the inner peripheral surface of the stopper with respect to the peripheral surface of the stopper can be released, and when the latching tool is removed from the main body, the movable body is moved to the engaging portion side in the main body, and the selected taper portion of the stopper is moved. The folding table according to claim 12 , wherein the folding table is provided so as to be engageable with an engaging portion inside the main body, and an inner peripheral surface of the stopper is provided so as to be pressed against a peripheral surface of the operating member . When the latch is removed from the main body and the top plate is folded and displaced, the actuating member is provided to be able to extend and displace upward, and the engagement between one taper part of the stopper and the engaging part inside the main body is released. The folding table according to claim 13 , wherein the pressing of the inner peripheral surface of the stopper with respect to the peripheral surface of the operating member can be released . When the latch is removed from the main body and the top plate is deployed and displaced, the actuating member is provided so that it can be reduced and displaced downward, and the selected taper portion of the stopper is engaged with the engaging portion inside the main body, The folding table according to claim 13 , wherein the inner peripheral surface of the movable member can be pressed against the peripheral surface of the actuating member . When folded in the top plate, the projecting actuating member above on posts coaxial claim in which the said actuating member by Dodo the top plate on movement of the actuating member and the top plate arranged parallel to each other 12. The folding table according to 12 .

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