JP4073694B2 - Folding table - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, the top plate rotates between a substantially horizontal use position and a substantially vertical retracted position with respect to the leg struts that are separated from each other to the left and right, and the both positions are maintained by the engaging means, and The present invention relates to a folding table in which engagement means can be released by an operation member provided on the top plate.
[0002]
[Prior art]
As this type of folding table, the applicant of the present application has made it possible to conceal the top plate rotation locking portion from the outside, avoid the danger of fingers being pinched, and improve the safety. Already developed folding table.
[0003]
FIG. 8A is a side view of the above folding table showing a state in which the top plate is held in a horizontal position, and FIG. 8B is a cross-sectional view taken along the line AA in FIG.
[0004]
As shown in FIG. 8A, the folding table 01 includes a pair of left and right pedestal columns having a pair of left and right brackets 03 facing the front and rear directions provided on both sides of the lower surface of the top plate 02 and a pivot shaft 05 facing the left and right directions. By pivotally attaching the top plate 02 to the upper end portion, the top plate 02 is rotated between a horizontal use position where the top plate 02 lies near the upper ends of both leg posts 04 and a folding position where the front side of the leg posts 04 stands upward. It can move.
[0005]
Specifically, the top plate 02 is horizontally engaged by engaging with the shaft hole 07 through which the pivot 05 is inserted and the two locking pins 08 and 09 provided in the bracket 03 facing the left and right directions on the inner side surfaces of the upper ends of both leg posts 04. A plate-like support piece 012 having two engaging grooves 010a and 010b which can be held at the use position and the standing position is provided at the front and back, and the upper end of the support piece 012 and the operation lever 013 are operated. As shown in FIG. 8 (b), the locking pin moving member 015 that engages and disengages the locking pins 08 and 09 and the both engaging grooves 010a and 010b in association with each other is formed in a substantially downward U-shape. The bracket 03 is accommodated between the opposite side plates 03a and 03b.
[0006]
[Problems to be solved by the invention]
By the way, the engaging grooves 010a and 010b of the folding table 01 configured as described above have a structure formed by cutting out a part of the outer periphery of the plate-like support piece 012. Although it is housed between 03b, when the top plate 02 is positioned in the vertical state, one of the engagement grooves 010b is exposed, and the other engagement groove 010a is located between the side plates 03a and 03b. However, since there is a risk of pinching fingers or the like during operation of the operation lever 013 or during maintenance, the applicant has further researched, and as a result, the engaging groove for positioning the top board 02 in the horizontal or vertical state is recessed. The folding table operating device of the present invention has been developed by paying attention to the fact that the safety can be improved by arranging in a place.
[0007]
The present invention has been made in view of such a situation, and an object of the present invention is to provide a folding table capable of ensuring safety when the top plate is positioned in a vertical position or during a rotation operation. It is what.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the folding table of the present invention is such that the top plate rotates between a substantially horizontal use position and a substantially vertical retracted position with respect to the left and right leg posts, and the both In the folding table in which the position is maintained by the engaging means and the engaging means can be released by the operation member provided on the top plate, a recess that opens upward and in the front-rear direction is formed at the upper ends of the left and right leg posts. A support tool having two support plates is provided, and a pivot that pivotally attaches left and right frames provided on the left and right lower surfaces of the top plate between the two support plates and the engagement means are arranged. The engaging means is slidable in the left and right frames, and includes an operating member having a pair of locking shafts before and after being slid by the operating member, and a rotation of the operating member. One pair is formed before and after the support to prevent movement The front engaging shaft and the front engaging groove are locked when the top plate is in a substantially horizontal use position, and the top plate is in a retracted position where the top plate is substantially vertical. When this happens, the rear locking shaft and the rear engaging groove are locked, and the pair of engaging grooves are formed on the front and rear sides of the two inner surfaces facing each other of the two support plates. It is characterized by that.
According to this feature, a pair of locking shafts provided on the front and rear of the operating member slidable in the frame in a pair of engaging grooves formed on the front and rear of the two inner surfaces facing each other of the two support plates. The locking shaft is securely supported on both sides of the support plate when the top plate is in a substantially horizontal position and when it is in a substantially vertical retracted position. There is no risk of inadvertent fingers being caught when stopped, and the appearance is improved.
[0011]
In the folding table of the present invention, the front engaging groove is a horizontal groove that opens forward, and the rear engaging groove is an inverted L-shaped groove that is bent forward at the lower side. It is preferable.
In this way, the horizontal groove has an advantage that the top plate can be easily fitted in the horizontal state and is not easily removed, and the inverted L-shaped groove can restrain the standing top plate from moving to the horizontal state.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show a folding table according to the present invention, in which FIG. 1A is a perspective view of the folding table in a horizontal use state, FIG. 1B is a perspective view of the folding table in a vertical retracted position, and FIG. 3 is an exploded perspective view of the apparatus, FIG. 3A is a partially enlarged side view showing the engaging means of the folding table in use, and FIG. 3B is a partially broken partial side view showing the engaging means of the folding table. FIG.
[0014]
First, in FIG. 1, the folding table 1 is supported by four casters S provided at the lower ends of leg columns 4a and 4b, which are a pair of leg columns arranged on the left and right sides of the bottom surface and opened to the front and rear. It is movable on the floor surface 3 and can be stopped and held at a predetermined position on the floor surface 3.
[0015]
As shown in FIG. 1A, the folding table 1 is maintained in a state in which the horizontally long rectangular top plate 2 is held substantially horizontally so that the front F is positioned in front of the leg support in use. When not in use, as shown in FIG. 1 (b), the top F is maintained in a vertically retracted position with the front F facing upward and can be accommodated with a plurality of folding tables. It is like that.
[0016]
The top plate 2 maintained in the state of being engaged and held in the horizontal position and the non-use vertical position as described above is for releasing the engagement state when rotating between the two positions. The operating device is provided.
[0017]
In addition, as shown in FIG. 2, the folding table 1 includes support members 5a and 5b each composed of a pair of support plates 6a and 6b projecting forward and backward at the upper ends of a pair of left and right leg posts 4a and 4b. The left and right supports 5a and 5b are connected by a connecting member 12. Further, the top plate 2 is connected to a damper device D in the middle between the connecting member 12 and the horizontal frame 9a so as to alleviate the impact at the end position where the top plate 2 is rotated.
[0018]
On the other hand, left and right vertical frames 8a, 8b extending in the front-rear direction and horizontal frames 9a, 9b connected in the front-rear direction between the pair of vertical frames 8a, 8b are attached to the lower surface of the top plate 2. Each of the horizontal frames 8a, 8b and 9a, 9b is formed in a U-shaped cross section with an upper opening, and a pair of wires W1 connected to the operating device 15 is provided on the front side plate at the center of the horizontal frame 9a disposed in front. , An opening 10 is formed for insertion through the end of W2.
[0019]
Further, the front horizontal frame 9a is provided with a frame cover 14 having a U-shaped cross section whose upper surface opens on the lower surface, and a pair of wire locking pieces W1b and W2b inserted through the opening 10 at the center front. Insertion holes 14a and 14b for insertion are formed.
[0020]
A pair of elongated holes 16a and 16b penetrating in the width direction are formed in the front and rear at substantially the center of the side surfaces of the left and right vertical frames 8a and 8b, and a support hole 18 is formed in the middle of both elongated holes 16a and 16b. It is installed.
[0021]
Inside these vertical frames 8a and 8b, a block-like actuating member 20 formed in a rectangular parallelepiped shape that constitutes one of the engaging means is inserted and fitted so as to be slidable in the front-rear direction. The member 20 is formed with a through hole 22 through which a locking shaft 26 (see FIG. 3) corresponding to the long hole 16b is inserted and a long hole 23 corresponding to the support hole 18, and behind the left and right frames 8a and 8b. A through hole 25 through which a locking shaft 30 (see FIG. 3) for locking the other end of a tension spring 24 that locks one end is formed in a notch groove 21 formed in the upper portion is formed.
[0022]
When the actuating member 20 configured as described above is inserted into a substantially intermediate portion inside each of the vertical frames 8a and 8b, the actuating member 20 operates with the long holes 16b in front of the corresponding frames 8a and 8b. The locking shaft 26 shown in FIG. 3 is inserted into the through hole 22 in front of the member 20, and the long holes 16a in the rear of the vertical frames 8a and 8b and the through hole 25 in the rear of the actuating member 20 are shown in FIG. When the stop shaft 30 is inserted, the stop shaft 30 is incorporated into the vertical frames 8a and 8b in a state of being supported so as to be movable in the front-rear direction by the two locking shafts 26 and 30 disposed on the front and rear.
[0023]
Further, as shown in FIGS. 2 and 3 (a) and 3 (b), the support members 5a and 5b at the upper ends of the leg columns 4a and 4b have an intermediate portion sandwiched between a pair of support plates 6a and 6b. A pair of inverted L-shaped engagement grooves formed as recesses opened in the front-rear direction, with a through hole 32 formed in the rear portion and the front end bent downward on the opposite surface on the rear end side 35 is formed, and a pair of horizontal engaging grooves 34 opening toward the front are formed on the inner surfaces of the front portion facing each other. The horizontal engaging groove 34 and the inverted L-shaped engaging groove 35 constitute an engaging portion which is the other of the engaging means of the present invention.
[0024]
By inserting the pivot 28 through the long hole 23 of the operating member 20 from the through hole 32 formed in the support plates 6a and 6b of both the support members 5a and 5b, the left and right frames 8a and 8b are connected to the both leg supports 4a and 4b. The upper ends of the support tools 5a and 5b are pivotally attached via a pivot 28. Since the pivot 28 is supported between the two support plates 6a and 6b, the left and right frames 8a and 8b can be reliably supported.
[0025]
As shown in FIG. 2, the locking pieces W1a and W2a provided at one end of the wires W1 and W2 are locked in the engaging grooves at the front ends of the operating members 20 incorporated in the vertical frames 8a and 8b, respectively. The wires W1 and W2 are accommodated in both vertical frames 8a and 8b and the front horizontal frame 9a in a bent state, and the other end side locking pieces W1b and W2b are connected to the operating member 36 of the operating device 15.
[0026]
Then, the other end of the tension spring 24 whose one end is locked in the notch groove 21 at the rear of both the vertical frames 8a and 8b is locked to the locking shaft 30 inserted at the rear of the operating member 20, whereby the operating member 20 is The wires W1 and W2 are biased rearward and tension is applied to the wires W1 and W2.
[0027]
The operating device 15 includes an operating member 36 that is integrally molded with a synthetic resin or the like, and a fixing member that is fixed to the center of the back surface in front of the top plate 2 and that engages and holds the operating member 36 so as to be movable in the front-rear direction. 38 and a safety lever 44 that protrudes forward with respect to the operation member 36 and that allows the operation member 36 to be operated by pushing backward.
[0028]
When operating the operating device 15 configured as described above, for example, the operating member 36 is pulled out to the front while pressing the safety lever 44 with the thumb of a human hand, thereby sliding the operating member 20 and engaging means. To drive. The engaging means comprises two means at the front and rear, and as shown in FIGS. 2 and 3A and 3B, the engaging shaft 26 and the engaging groove 34 as the first engaging means at the front. Or the engagement state between the engaging shaft 30 and the engaging groove 35 which is the second engaging means on the rear side can be released.
[0029]
Next, the engaging means for positioning the top plate 2 in the horizontal or vertical position will be described with reference to FIGS.
[0030]
FIG. 4 is a partial perspective view showing a state in which the left and right vertical frames are horizontally supported by the support members at the upper end portions of both leg columns, and FIG. 5 is a state in which the left and right vertical frames are vertically supported by the support members at the upper end portions of both leg columns. FIG. 6 is a partial perspective view of the support device at the upper end portion of the leg column viewed from an oblique front side, and FIG. 7 is a partial perspective view of the support device at the upper end portion of the leg column viewed from an oblique rear side. is there.
[0031]
First, as shown in FIGS. 6 and 7, the support members 5a and 5b at the upper ends of the leg posts 4a and 4b are formed of a pair of left and right support plates 6a and 6b that protrude upward in the front and rear directions, and the upper and front and rear directions are A recess is formed so that the left and right frames 8a, 8b can be pivoted when opened.
[0032]
A pair of left and right support plates 6a and 6b is curved, and a receiving member 40 having a buffer function integrally formed with synthetic resin or the like is detachably mounted on the upper surface. This receiving member 40 has a pair of left and right support pieces 42a, 42b in which a through-hole 33 is formed in the width direction on one end side, and a protruding portion bent downward by a predetermined arc in front of the other end side. 40b is formed, and the lower surface between the support pieces 42a and 42b and the projecting portion 40b are connected by a curved band 40d curved downward.
[0033]
Further, in the receiving member 40, the horizontal surface formed on the upper surface of the protruding portion 40b on the front side communicated with the curved band 40d is configured as the first contact portion 40a, and the rear side communicating with the curved band is directed downward. The bent protruding portion is configured as the second contact portion 40c.
[0034]
In the state where the receiving member 40 is mounted, as shown in FIG. 6, the outer surface of the projecting portion 40b formed by bending the front of the first contact portion 40a formed on the front side of the support plate 6a, 6b. It is configured as an abutting portion that slightly protrudes forward from the tip.
[0035]
A pair of horizontal engaging grooves 34 that open toward the front are formed on the opposing surfaces of the pair of left and right support plates 6a and 6b that sandwich the first contact portion 40a. Further, as shown in FIG. 7, when the receiving member 40 is mounted, the opposing surfaces of the pair of left and right support plates 6a and 6b sandwiching the second contact portion 40c are bent forward and downward. A pair of inverted L-shaped engagement grooves 35 are formed.
[0036]
Since the engagement groove 34 is a groove that opens forward, the engagement groove 34 has a shape that is easy to fit when the top plate is placed in a horizontal state and is difficult to come off after being fitted once, while the inverted L-shaped groove 35 is a stand-up top. It can restrain that the board 2 moves to a horizontal state.
[0037]
The pivot 28 inserted through the through-holes 32 of the pair of left and right support plates 6a and 6b mounts the left and right vertical frames 8a and 8b and the receiving member 40 so as to be pivotable, and the vertical frames 8a and 8b serve as support tools. As shown in FIG. 4, when both the locking shafts 26 project from both side surfaces in front of the vertical frames 8 a and 8 b are engaged with the engaging groove 34 by the urging force of the spring 24, It is in the state engaged via 20.
[0038]
Further, as shown in FIG. 5, when the vertical frames 8a and 8b are supported on the support members 5a and 5b and are in a vertical state, the lower surfaces of the vertical frames 8a and 8b are provided below the rear end of the receiving member 40. It will be in the state contact | abutted to the protrusion part 40c.
[0039]
Next, the operation of positioning the top plate of the folding table configured as described above at a horizontal or vertical position will be described.
[0040]
First, as shown in FIG. 1A, when the top plate 2 in the horizontal state is stored, the operation device 15 is operated in order to rotate the front F to a substantially vertical retracted position located above. .
[0041]
Therefore, by pulling the operating member 36 that can be operated by pressing the safety lever 44 of the operating device 15 in FIG. 2 to the front, the pair of wires W1 and W2 are pulled, and both the operating members 20 are pulled by the tension spring 24. It moves forward against the urging force.
[0042]
By this movement of the actuating members 20, both ends of the locking shafts 26 in front of the actuating members 20 are disengaged from the engaging grooves 34 formed in the support plates 6a and 6b, the top plate 2 is released from the locked state, and the pivot 28 The front end F can be artificially rotated upward from the horizontal state.
[0043]
As a result, as shown in FIG. 5, when the left frame 8a is rotated to the vertical state, the frame 8a comes into contact with the second contact portion 40c on the outer surface of the receiving member 40 and the impact is alleviated. .
[0044]
When the top plate 2 is in a substantially vertical state, as shown in FIG. 3B, both ends of the locking shaft 30 on the rear side of both operating members 20 are engaged with a pair of inverted L-shaped engaging grooves 35 to pull the top plate 2. The state is maintained by the urging force of the spring 24, and the operation device 15 is maintained in the initial state by the operation member 36 being locked.
[0045]
When the folding table 1 positioned in the vertical state is stored in a stacked manner in the front-rear direction, the top surface of the top plate 2 comes into contact with the protruding portion 40b of the receiving member 40 of the adjacent folding table 1. It is possible to prevent the occurrence of impact and scratches at the time.
[0046]
Next, when the top plate 2 is to be used again, the operation member 36 that can be operated by pressing the safety lever 44 of the operation device 15 is pulled forward, thereby pulling the pair of wires W1 and W2 together. Thus, both actuating members 20 move forward against the urging force of the tension spring 24.
[0047]
As a result, the top plate 2 in the free state can be tilted forward by placing a hand on the upper end portion in the vertical state and artificially rotated to the horizontal state. When the top plate 2 is rotated to the horizontal state around the pivot 28, the lower surface of the vertical frame 8a contacts the first contact portion 40a of the receiving member 40 on the support 5a as shown in FIG. Thus, the impact at the time of contact is alleviated.
[0048]
Thus, when the top plate 2 is rotated to the horizontal state, both ends of the locking shaft 26 protruding from the both side surfaces in front of the vertical frames 8a and 8b are guided by the support plates 6a and 6b, and the tension springs 24 are attached. The state is maintained by engaging with the engaging groove 34 by the force, and at the same time, the operating member 36 is locked and the operating device 15 is maintained in the initial state.
[0049]
Therefore, according to the folding table 1 configured as described above, the support members 5a and 5b having recesses that open upward and in the front-rear direction are provided at the upper ends of the both leg supports 4a and 4b, respectively, A bracket 28 for concealing and storing the positioning portion of the top plate as in the prior art is provided by disposing the pivot 28 and the engaging means for pivotally attaching the left and right frames 8a and 8b provided on the left and right lower surfaces of the top plate 2, respectively. Not only can it be simplified, but also safety can be improved.
[0050]
In addition, the engagement groove 34 is formed on the front inner surface of the support plates 6a and 6b that form the recesses, and the engagement groove 35 is formed on the rear inner surface of the support plates 6a and 6b that form the recesses, and the front of the locking shaft 26 and the rear of the locking shaft 30, the right and left frame 8a, configured to both ends from both sides front and rear of 8b is projected, both locking shaft 26 or 30 at the time of engagement Since both ends thereof are accommodated in the engaging groove 34 or the engaging groove 35, not only there is no risk that a finger or the like is inadvertently caught during the engagement, but also the appearance is improved.
[0051]
【The invention's effect】
The present invention has the following effects.
[0052]
(A) According to the first aspect of the present invention, the pair of engaging grooves formed on the front and rear sides of the two opposing inner surfaces of the two support plates are arranged on the front and rear of the operating member slidable in the frame. The pair of locking shafts are designed so that they can be neglected, so that the locking shaft can be secured on both sides of the support plate when the top plate is in a substantially horizontal position and when it is in a substantially vertical retracted position. And there is no danger of a finger or the like being inadvertently pinched at the time of locking, and the appearance is improved.
[0055]
( B ) According to the invention of claim 2 , the horizontal groove has an advantage that the top plate is easily fitted in the horizontal state and is difficult to be removed, and the inverted L-shaped groove moves the top plate in the standing state to the horizontal state. Can be restrained.
[Brief description of the drawings]
1A and 1B show a folding table of the present invention, in which FIG. 1A is a perspective view of a folding table in a horizontal use state, and FIG. 1B is a perspective view of a folding table in a vertical retracted position.
FIG. 2 is an exploded perspective view of the operating device on the lower surface of the table.
FIG. 3A is a partially enlarged side view showing the engaging means of the folding table in use, and FIG. 3B is a partially cutaway partial side view showing the engaging means of the folding table.
FIG. 4 is a partial perspective view showing a state in which left and right vertical frames are horizontally supported by a support at the upper end of both leg struts.
FIG. 5 is a partial perspective view showing a state in which left and right vertical frames are vertically supported by a support at the upper end of both leg struts.
FIG. 6 is a partial perspective view of the support at the upper end portion of the leg column as viewed obliquely from the front side.
FIG. 7 is a partial perspective view of the support at the upper end portion of the leg strut when viewed obliquely from the rear side.
8A is a side view of a conventional folding table showing a state where the top plate is held in a horizontal position, and FIG. 8B is a cross-sectional view taken along line AA of FIG. 8A.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Folding table 2 Top plate 3 Floor surface 4a, 4b Leg support | pillar 5a, 5b Support tool 6a, 6b Support plate 8a, 8b Left and right vertical frame 9a, 9b Horizontal frame 10 Opening 12 Connecting member 14 Frame cover 14a, 14b Insertion hole 15 Operating device 16a, 16b Long hole 18 Support hole 20 Actuating member 21 Notch groove 22 Through hole 23 Long hole 24 Tension spring 25 Through hole 26 Locking shaft 28 Axle 30 Locking shaft 32, 33 Through hole 34, 35 Engaging groove 36 Operation member 38 Fixing member 40 Receiving member 40a First contact part 40b Projecting part 40c Second contact part 40d Curved band 42a, 42b Support piece 44 Safety lever D Damper device F Front S Casters W1, W2 Wires W1a, W2a Locking piece W1b, W2b Locking piece

Claims (2)

The top plate rotates between a substantially horizontal use position and a substantially vertical retracted position with respect to the leg struts separated from each other to the left and right, and the both positions are maintained by the engagement means. In the folding table that can be released by the operation member provided on the top plate,
Provided at the upper ends of the left and right leg struts are each provided with a support having two support plates having recesses that open upward and in the front-rear direction, and provided between the two support plates on the left and right lower surfaces of the top plate. A pivot shaft for pivotally attaching the left and right frames and the engaging means are disposed, and the engaging means are slidable in the left and right frames, respectively, before and after being slid by the operating member. An operating member having a pair of locking shafts, and an engaging groove formed one by one on the front and rear sides of the support member for preventing rotation of the operating member, and the top plate is used in a substantially horizontal use position. The front locking shaft and the front engagement groove are locked, and the rear locking shaft and the rear engagement groove are engaged when the top plate is in a substantially vertical retracted position. The pair of engaging grooves are formed on the front and rear sides of the two inner surfaces facing each other of the two support plates. Folding table, characterized in that. The folding according to claim 1 , wherein the front engaging groove is a horizontal groove opening forward, and the rear engaging groove is an inverted L-shaped groove bent forward. table.

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