JP2017042314A - Table system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table system in which miniaturization can be contrived.SOLUTION: The table system includes a table plate 11 that is a planar member and that can make a transition from an unused state in which an angle formed by the main surface and a horizontal surface is relatively large to a used state in which the angle is relatively reduced by an upper end part 11a, a part situated in the upper end in the unused state, being pivotally displaced so as to move downward; a support part 35 that, as the upper end part 11a descends, elevates a lower end part, an end part on the side opposite from the upper end part 11a, by supporting from below the table plate 11 during the pivotal displacement; a guide mechanism containing a transfer part that is installed in the elevation section during the pivotal displacement in the table plate 11 and a guide part that movably guides the transfer part in the vertical directions; and a speed suppression part that, with the transfer part in a prescribed range which is at least a partial range of the movable range, suppresses the moving speed of the transfer part when the transfer part moves upward.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a storable table disposed on the back of a chair back.

  As a table system attached to the back of a chair back, etc., there is a system configured to rotate a table plate in a substantially horizontal state of use so as to be in a substantially upright non-use state. In such a table system, a table has been proposed in which the top plate surface at the end opposite to the user side of the table plate pushes up the cover member in order to suppress the rotation speed of the table plate (see Patent Document 1). .

JP 2011-255063 A

  Since the table of Patent Document 1 described above has a structure in which the end on the opposite side to the user side is raised with respect to the swing axis as the table plate rotates, the above-mentioned table is behind the swing axis. A space for moving the end of the table plate up and down is required. As a result, there is a problem that the width in the front-rear direction of the entire table system is increased.

  An object of the present invention is to propose a table system that can be miniaturized.

  A table system made to solve the above-described problems includes a table plate (11), a support portion (35), a guide mechanism (17, 27a, 29a, 31, 33, 61, 63), and a speed suppressing portion. (39).

  The table plate is a plate-like member, and the upper surface, which is a portion located at the upper end in the non-use state, moves in a downward direction when the main surface and the horizontal plane make a relatively large angle. Thus, it is possible to transition to a use state in which the angle is relatively small by rotationally displacing in this manner.

A support part raises the lower end part which is an edge part on the opposite side to the said upper end part with the fall of the said upper end part by supporting the table board which is performing the said rotational displacement from the downward direction.
The guide mechanism includes a moving part (17) provided at a portion of the table plate that rises during the execution of the rotational displacement, and a guide part (27a, 29a, 31, 33) that guides the moving part so as to be movable in the vertical direction. , 61, 63).

  The speed suppressing unit suppresses the moving speed of the moving unit when the moving unit moves upward in a predetermined range that is at least a part of a range in which the moving unit is movable.

  In the table system configured as described above, when the table plate transitions from the non-use state to the use state, the moving unit is guided by the guide unit and moves upward, but the moving speed of the moving unit at that time is reduced. It is suppressed by the part. Therefore, the rotation speed of the table plate is suppressed, and the table plate can be safely put into use.

  In this table system, a portion on the front side of the moving portion of the table plate (in the table of Patent Document 1, the end portion on the side opposite to the user side with respect to the rocking shaft) is used for suppressing the rotation speed. Since it is not used, it is not necessary to provide a space for allowing the portion to move up and down, and the table system can be downsized.

  The table system described above may be configured as follows. The table system described above is disposed below the predetermined range, and includes a non-moving portion (37) that does not move when the moving portion moves within the predetermined range. And a resistance force to an operation in which the length from the one end to the other end increases is generated.

  The speed suppressing unit has one end connected to the moving unit and the other end connected to the non-moving unit, and the moving unit moves upward to increase the length from the one end to the other end. Sometimes a resistance force is generated to suppress the moving speed of the moving part.

  The table system configured as described above suppresses the moving speed of the moving unit by extending the speed suppressing unit connected to the non-moving unit and the moving unit disposed below the predetermined range. Since the speed suppression unit extends in the vertical direction, the space for the speed suppression unit to be arranged and extended is required to be long in the vertical direction, but it is not necessary to provide a wide space in the front-rear direction based on the user. . Therefore, it is possible to suppress the thickness of the table system in the front-rear direction. In addition, as such a speed suppression part, the absorber, coil spring, etc. which expand and contract are illustrated.

  The table system described above may be configured as follows. The table system described above has a storage portion (21) that can store the table plate in the non-use state, has an opening formed in an upper portion thereof, and can draw the table plate upward through the opening. The table plate is capable of transitioning to the use state in a state where the table plate is pulled out from the opening to a predetermined height, and the non-moving portion is in a lower range in which the moving portion is a range below the predetermined range. In some cases, it moves with the movement of the table plate, and does not move when the moving part moves in the predetermined range.

  The table system configured as described above is not in use when the table plate is stored in the storage unit. Further, when the table plate is positioned below the predetermined height, the non-moving portion moves along with the table plate. Therefore, even if the table plate is moved upward, the speed suppressing portion does not extend.

  Therefore, the movement restraining part does not generate a resistance force when the table plate is moved upward, and exerts a resistance force when the table plate is rotated to be in a use state. Don't be.

  The table system described above may be configured as follows. In the table system described above, the support portion has a contact portion that contacts a lower surface that is a surface facing the lower side of the table plate in the use state, and the contact portion moves the table plate in the use state from below. The contact portion can be rotated about a predetermined rotation axis within a range including a support position and a displacement position where the contact portion is displaced to a position closer to the moving portion in the horizontal direction than the support position.

  The table system configured as described above can displace the contact portion to a position away from the moving portion and support the table plate, so that the amount of movement of the moving portion can be increased, and the speed suppressing portion is made to function. It becomes easy to secure the process.

  In addition, the code | symbol in the parenthesis described in this column shows the correspondence with the specific means as described in embodiment mentioned later as one aspect | mode, Comprising: It does not limit the technical scope of this invention. .

It is a side view which shows the state in which the table system was provided in the chair. It is the front view of the table system which is an unused state, and is a figure which saw through a covering board. FIG. 3 is a right side view showing the table system, and is a perspective view of the right side component. FIG. 3 (A) is a view showing the case of the storage position, and FIG. 3 (B) is moved upward from the storage position. FIG. It is the right view which shows a table system, Comprising: It is the figure which saw through the component of the right side, FIG. 4 (A) is a figure which shows the case of an upper position, FIG. 4 (B) is a figure which shows a use condition. is there. It is the front view which shows a table system, and is a figure which saw through a covering board, and is a figure in which Drawing 5 (A) shows a case where it moves up from a storage position, and a case where Drawing 5 (B) is an upper position. FIG. 5C is a diagram showing a use state. FIG. 6 is a side view for explaining the support shaft and its peripheral displacement accompanying the rotation of the table plate, and is a view seen through the right side component, and FIG. 6 (A) is a view showing the case of the upper position. 6 (B) to FIG. 6 (E) are views showing a state where the inclination angle of the table plate is gradually reduced, and FIG. 6 (F) is a view showing a use state. It is a side view explaining the shape of the lower end of a table board. FIG. 9 is a side view for explaining the displacement of the support shaft and its periphery accompanying the rotation of the table plate in the case where the upper end support is used instead of the support, and FIG. 8 (B) to 8 (E) are views showing a state in which the inclination angle of the table plate is gradually reduced, and FIG. 8 (F) is a view showing a use state.

Embodiments of the present invention will be described below with reference to the drawings.
[1. Embodiment]
(1-1) Overall Configuration of Table System As shown in FIG. 1, the table system 1 of the present embodiment is a system provided on the back plate 5 of the chair 3 installed on the floor surface. The table system here means an aggregate of a plurality of elements having a function as a table. The back plate 5 is a flat plate-like member provided upright with respect to the floor surface. The table system 1 is used by a user of a chair installed behind the chair 3. In the following description, the user refers to the user described above.

  In the following description, the direction of the back plate 5 with respect to the chair 3, that is, the direction in which the user sits is described as the rear. In addition, the direction in which the user faces, that is, the direction in which the table system 1 exists when viewed from the user is described as the front. In the following description, the left and right are the left and right directions from the user's viewpoint.

  The table system 1 includes a table plate 11 and a storage portion 21 that is provided on the back plate 5 and stores the table plate 11 located at the storage position. The table plate 11 is a flat plate-like member and can be changed between a non-use state and a use state.

  The non-use state is a state of the table plate 11 indicated by a broken line in FIG. 1, and is a state in which the angle formed between the main surface of the table plate 11 and the horizontal plane is relatively large compared to the use state. In this non-use state, the table board 11 is accommodated in the front, and the user cannot substantially use the table board 11 for general table purposes. In a non-use state, it can be stored in a storage unit 21 described later.

  In the present embodiment, the state in which the main surface of the table plate 11 spreads in the vertical direction is exemplified as the non-use state, but the non-use state may be a state inclined with respect to the vertical direction.

  Further, the use state is the table plate 11 indicated by a solid line in FIG. 1, and the table plate 11 is moved so that the upper end portion 11a of the upper end of the table plate 11 in the non-use state moves to the user side (that is, the rear side) and downward. As a result of the rotational displacement of 11, the above-described angle is relatively small. In this use state, the user can place an object on the table board 11.

In the present embodiment, the state in which the main surface of the table plate 11 spreads in the horizontal direction is illustrated as the use state, but the use state may be a state inclined from the horizontal direction.
A more detailed configuration of the table system 1 will be described with reference to FIGS.

  The table plate 11 can move in the vertical direction when not in use. 2 and 3A show the case where the table plate 11 is in the lower storage position. 3 (B) and 5 (A) show a state in which the table plate 11 is raised by a certain amount from the storage position. 4 (A) and 5 (B) show a state where the table plate 11 is located at an upper position where the table plate 11 is located further upward and the rotational displacement to the use state is possible. 4 (B) and 5 (C) show the table plate 11 in a use state after the table plate 11 in the upper position is rotated.

  The table plate 11 includes a handle portion 15 and a pair of left and right support shafts 17. The handle portion 15 is provided at the upper end portion 11a of the table plate 11, has a length in the left-right direction, and protrudes from the table plate 11 in the rearward direction when not in use.

  The support shaft 17 has a cylindrical shape, and the left and right sides of the lower end portion 11b (see FIGS. 3A and 3B), which is a portion located at the lower end of the table plate 11 when the table plate 11 is not in use. It is provided on the side and protrudes outward in the left and right directions. The support shaft 17 is rotatably supported by through holes 41a formed in shaft support portions 41 provided on the left and right sides of a push-up portion 33 described later. That is, the support shaft 17 serves as the rotation shaft of the table plate 11. The support shaft 17 is an example of a moving unit.

  The storage unit 21 includes a cover plate 23, a back plate 25, a left side portion 27, a right side portion 29, an upper frame collar 30a, a lower frame collar 30b, a center rail 31, a push-up portion 33, and a support portion 35. And have.

  The covering plate 23 covers the back of the table plate 11 in the storage position. The back plate 25 has a left and right length and is attached to the back plate 5. The left side portion 27 and the right side portion 29 are disposed at the left and right ends of the covering plate 23, and connect the covering plate 23 and the back plate 25.

  The storage portion 21 constitutes a box body having openings formed vertically by the cover plate 23, the back plate 25, the left side portion 27, the right side portion 29, and the back plate 5, and the table plate 11 is disposed through the upper opening. Can be stored and pulled upward.

  The left portion 27 is provided with a left side rail 27a having a groove recessed in the vertical direction from the inside to the outside on the surface facing the inside (that is, the right side). Further, the right side 29 is provided with a right side rail 29a on the surface facing the inner side (that is, the left side) in which a groove recessed from the inner side toward the outer side is formed in the vertical direction. The left side rail 27a and the right side rail 29a guide the vertical movement of the support shaft 17 by guiding the vertical movement of the shaft support portion 41.

  The upper frame jumper 30a and the lower frame jumper 30b are members having lengths on the left and right sides, and are spaced apart from each other in the vertical direction. It is attached.

  The center rail 31 has a length in the vertical direction, and has an upper end attached to the upper frame jumper 30a and a lower end attached to the lower frame jumper 30b. A groove having a length in the vertical direction is formed on the front surface of the center rail 31. The inside (rear side) of this groove extends left and right, and engages with a runner of a slide base 37 described later.

  The push-up portion 33 is disposed on the front side of the center rail 31 inside the box body, and is connected to the slide base 37 having a length on the left and right sides, the absorber 39 provided on the left and right ends of the slide base 37, and the absorber 39. And a constant load spring 43 provided on the left and right sides of the slide base 37.

  The slide base 37 has a runner (not shown) that engages with the above-described groove of the center rail 31 and can slide up and down along the groove. Since the runner engages with the groove described above, the slide base 37 can move up and down along the center rail 31. A stopper 31 a is provided on the upper portion of the center rail 31. When the slide base 37 rises and contacts the stopper 31a, the upward movement from the position is suppressed. The slide base 37 is an example of a non-moving part.

  The absorber 39 is a shock absorber that has a variable length from one end to the other end and generates a resistance force to an operation in which the length increases. One end of the absorber 39 is connected to the slide base 37, and the other end is connected to the support shaft 17 via the shaft support portion 41.

  The shaft support portion 41 is formed with a through hole 41a into which the support shaft 17 can be inserted. In a state where the support shaft 17 is inserted into the through hole 41a, the support shaft 17 can rotate with respect to the shaft support portion 41 around the through hole 41a.

  The constant load spring 43 is a long leaf spring wound around a drum, the drum portion is fixed to the slide base 37, and the tip of the extended leaf spring is locked to the upper portion of the cover plate 23. Has been.

  When the table plate 11 is positioned below the upper position in FIGS. 4A and 5B, the slide base 37 receives a load upward by the constant load spring 43. As a result, the table plate 11 also receives an upward load via the shaft support portion 41. When the slide base 37 comes into contact with the stopper 31a, the slide base 37 does not rise any further, and the table plate 11 does not receive an upward load.

The support portion 35 supports the rotation of the table plate 11, and includes a rotation shaft 51 and plate-like fins 52 configured to be rotatable about the rotation shaft 51.
The rotating shaft 51 has a length in a direction (left-right direction) parallel to the table plate 11 when the table plate 11 is in a non-use state or a use state. In this area, it is provided along the upper end of the cover plate 23. The rotating shaft 51 is an example of a predetermined rotating shaft. The predetermined rotation shaft 51 is a shaft having a length in the left-right direction that is disposed at a position behind the table plate 11 that is not in use.

  The fin 52 includes a contact portion 53 and an extension portion 55 that extend in different directions when the fin 52 is projected onto a virtual plane orthogonal to the rotation axis 51. The contact portion 53 extends upward from the rotating shaft 51, and the extending portion 55 extends downward from the rotating shaft 51.

  In the back plate 25 described above, when the fin 52 is rotated in a direction in which the contact portion 53 is directed rearward and the extended portion 55 is directed forward, the fin 52 is set in advance by contacting the extended portion 55. Is provided with a rotation suppressing portion 57 that suppresses rotation in the above direction.

  In addition, the support portion 35 includes a winding spring 59 that biases the fin 52 in a direction in which the contact portion 53 rotates forward. The winding spring 59 is arranged inside the fin 52 so as to cover the side wall of the rotating shaft 51.

  A support block 61 that supports the left rotation shaft 51 is provided at the upper end of the left side portion 27. A support block 63 that supports the right rotation shaft 51 is provided at the upper end of the right side portion 29. Each of the support blocks 61 and 63 is formed with a guide groove 65 for guiding the vertical movement of the support shaft 17 by guiding the vertical movement of the shaft support portion 41. The guide groove 65 has a length in the vertical direction and is a groove having a lower end opened and an upper end closed.

  The guide groove 65 guides the movement of the support shaft 17 in the upper part of the movable range of the support shaft 17. The support shaft 17 enters the guide groove 65 when the table plate 11 rises to a predetermined position. After entering the guide groove 65, it is possible to move greatly only in the vertical direction along the guide groove 65, and the movement in the front-rear direction is limited to be small.

  Before the support shaft 17 enters the guide groove 65, that is, when the table plate 11 is in the range between the storage position and the upper position, the support shaft 17 is pushed up by the center rail 31 to be moved up and down. Is supported by the shaft support portion 41. That is, the vertical movement of the support shaft 17 is guided by the center rail 31 and the push-up portion 33 in the above-described range. Further, the support shaft 17 is guided in the vertical direction together with the shaft support portion 41 by the left side rail 27a and the right side rail 29a in the above-described range.

  In this way, the support shaft 17 is guided to move up and down over the entire movable range. The left side rail 27a, the right side rail 29a, the center rail 31, the push-up portion 33, the support block 61 having the guide groove 65, and the support block 63 are examples of the guide portion.

  The left side rail 27a, the right side rail 29a, the center rail 31 and the push-up portion 33 all guide the vertical movement of the support shaft 17 within the above-described range. It is not necessary to guide the movement in the vertical direction, and the movement in the vertical direction may be guided by one or more of them.

  As shown in FIGS. 3 (A), 3 (B) and 4 (A), 4 (B), the slide base 37, the absorber 39, and the support shaft 17 are moved from the storage position to the upper position and are further used. Are arranged in a straight line in the vertical direction.

(1-2) Operation of the table system 1 (1-2-1) Operation of the table plate When the table plate 11 is located between the storage position and the upper position, the cover plate 23 comes into contact with the rear of the table plate 11. Therefore, the table plate 11 does not rotate backward, the table plate 11 is suppressed from being used, and is maintained in the unused state.

  As described above, since the constant load spring 43 applies an upward load to the slide base 37, the table plate 11 also receives an upward load. Since this load is smaller than the weight of the table board 11, the table board 11 is located in the storage position until it is pulled up by the user.

  When the user pulls the table board 11 up by hand or the like, the table board 11 moves upward. Until the slide base 37 comes into contact with the stopper 31 a, the slide base 37 moves as the table plate 11 moves in the vertical direction, and the table plate 11 receives a load from the constant load spring 43. Therefore, the user can pull out the table board 11 lighter than the actual weight.

  When the table plate 11 is pulled out from the opening of the storage portion 21 and moved up to a position where the slide base 37 contacts the stopper 31a, the table plate 11 can be changed to a use state. That is, this position is the above-described upper position. Moreover, this position is an example of a predetermined height.

  In the present embodiment, the timing at which the table plate 11 rises and the slide base 37 comes into contact with the stopper 31a is matched with the timing at which the table plate 11 is at the upper position. . In addition, if it is comprised so that the load of the constant load spring 43 may be added at least until the table board 11 will be in an upper position, it will become unnecessary for a user to pull up the table board 11 in the state without the assistance of the constant load spring 43, Transition to the use state of the table plate 11 can be easily performed.

(1-2-2) Operation of the support shaft and the support portion Using FIGS. 6A to 6F, the table plate 11 around the support shaft 17 when rotating the table plate 11 backward from the upper position to be used. The operation will be described. In the following description, the lower surface 13 of the table plate 11 is a surface facing the lower side of the table plate 11 when in use, and the rear side of the table plate 11 opposite to the back plate 5 when not in use. It is the surface that faces.

FIG. 6A shows a state where the table plate 11 is in the upper position. The support shaft 17 is located inside the guide groove 65.
When the table plate 11 in the upper position (that is, the table plate 11 in the non-use state) is rotated to the use state, as shown in FIGS. 6 (B) to (E), it is supported during the execution of the rotational displacement. The contact portion 53 of the fin 52 of the portion 35 contacts the lower surface 13 of the table plate 11 from below and supports the table plate 11 from below. Therefore, the table plate 11 rotates with the fins 52 as fulcrums.

  The contact portion 53 contacts the table plate 11 at a position between the upper end portion 11a (not shown in FIG. 6) and the lower end portion 11b. As a result, the lower end 11b rises with the lowering of the upper end 11a, and the support shaft 17 provided on the lower end 11b rises in the guide groove 65.

When the support shaft 17 moves to the position shown in FIG. 6 (F), the support shaft 17 comes into contact with the wall surface on the upper end side of the guide groove 65, and cannot move further upward.
By the way, as shown in FIG. 6A, the contact portion 53 is positioned on the front side in the non-use state. However, as the table plate 11 rotates and the inclination angle with respect to the horizontal plane decreases, 11 and is rotated backward about the rotation shaft 51. The tip of the contact portion 53 slides on the surface of the lower surface 13, and the position where the tip of the contact portion 53 contacts the lower surface 13 gradually moves backward.

  Further, the extension portion 55 rotates forward simultaneously with the movement of the contact portion 53 described above. When rotating further forward, the extension portion 55 contacts the rotation suppressing portion 57 as shown in FIG. When the extension part 55 contacts the rotation suppression part 57, rotation of the fin 52 is suppressed, and the contact part 53 does not rotate any more rearward. The state of FIG. 6F is the use state described above.

  In this use state, the contact portion 53 contacts the lower surface 13 of the table plate 11 to support the table plate 11 from below. The upper end side of the table plate 11 rotates downward and rearward by its own weight. The lower end side of the table plate 11 stops the rotation due to the weight of the table plate 11 by the support shaft 17 coming into contact with the wall surface on the upper end side of the guide groove 65 and suppresses the movement of the table plate 11 in the front-rear direction.

  The contact portion 53 is the farthest horizontal distance from the support shaft 17 when in use, and is closest when not in use. The position of the contact portion 53 in FIG. 6F is an example of a support position, and the position of the contact portion 53 in FIG. 6A is an example of a displacement position.

(1-2-3) Operation of the Absorber When the support shaft 17 moves upward as the table plate 11 rotates, the slide base 37 contacts the stopper 31a and cannot move upward. The length to the other end increases. In the state shown in FIG. 6A, the length of the absorber 39 is not initially extended, but as shown in FIG. 6B, the absorber 39 extends when the table plate 11 is inclined. This expansion continues until the use state shown in FIG.

  That is, the support shaft 17 moves upward in a range from the position of the support shaft 17 at the upper position shown in FIG. 6A to the position of the support shaft 17 in the use state shown in FIG. 6F. Sometimes, the slide base 37 does not move, and the absorber 39 generates a resistance force to suppress the upward movement speed of the support shaft 17. The absorber 39 is an example of a speed suppressing unit. A range from the position of the support shaft 17 shown in FIG. 6A to the position of the support shaft 17 shown in FIG. 6F is an example of the predetermined range. The slide base 37 is disposed below the predetermined range and moves in a lower range that is a range below the predetermined range.

(1-3) Other Features As shown in FIG. 7, a distance L1 from the center of the support shaft 17 to the lower end of the table plate 11, and a distance L2 from the center of the support shaft 17 to the surface of the table plate 11 , L1> L2.

  Since the lower end of the table plate 11 is formed in this way, the gap between the lower end surface of the table plate 11 and the back plate 25 becomes small when the table plate 11 is in use as shown in FIG. 6 (F). It can suppress that paper falls from the gap. Further, as shown in FIG. 6A and the like, when the table plate 11 is in the upper position or the storage position, a gap is formed between the table plate 11 and the covering plate 23 or the back plate 25, so that the vertical movement can be performed smoothly. realizable.

  Of the lower end portion of the table plate 11, the end surface 11c that rises upward when it is rotationally displaced from the upper position gradually has a cross-sectional shape whose distance from the center of the support shaft 17 gradually increases from L1 to L2. It has a curved surface that changes.

(1-4) Effects (1A) In the table system 1, when the table plate 11 transitions from the non-use state to the use state, the support shaft 17 provided at the lower end of the table plate 11 rises and the absorber 39 extends. The rising speed of the support shaft 17 is suppressed. As a result, the rotation speed of the table plate 11 is suppressed, and the table plate 11 can be safely used.

  (1B) In the table system 1, an absorber 39 and a push-up portion 33, which are devices for suppressing the rotation speed of the table plate 11, are provided below the table plate 11. Further, the absorber 39 and the push-up portion 33 move in the vertical direction along with the table plate 11. The absorber 39 extends and contracts in the vertical direction. Therefore, if the table plate 11 moves upward, the absorber 39 and the push-up portion 33 move to the space where the table plate 11 existed.

  That is, the space for arranging and moving the absorber 39 and the push-up portion 33 can be shared with the space for arranging and moving the table plate 11. Therefore, it is not necessary to provide a large space for arranging the absorber 39 and the push-up portion 33 before and after the space for the table plate 11 to move, and the table system 1 can be downsized.

  (1C) The table system 1 is not in use when the table plate 11 is stored in the storage unit 21. When the table plate 11 is positioned below a predetermined height (the height of the upper position), the slide base 37 moves with the table plate 11.

  Therefore, the absorber 39 does not generate a resistance force when the table plate 11 is moved upward, and operates to lift the table plate 11 in order to exert a resistance force when the table plate 11 is rotated for use. It is convenient without burdening.

  (1D) Since the table system 1 can support the table plate 11 by displacing the contact portion 53 to a position away from the support shaft 17, the table system 11 can be supported stably. Further, since the contact portion 53 is displaced to a position away from the support shaft 17 to support the table plate 11, the lift amount of the support shaft 17 accompanying the rotation of the table plate 11 can be increased, and the stroke for causing the absorber 39 to function. It becomes easy to secure.

  (1E) In the table system 1, nothing below the back plate 25 is attached to the back plate 5 except for the left side portion 27 and the right side portion 29 on both the left and right sides. Therefore, even when paper or the like falls in the gap between the front end of the table plate 11 and the back plate 5 when the table plate 11 is in use, it is difficult to be caught by the storage portion 21 and can be smoothly discharged downward.

[2. Modified example]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various forms can be taken as long as they belong to the technical scope of the present invention.

  [2A] In the above embodiment, the configuration in which the rotating table plate 11 is supported from below while the fins 52 of the support portion 35 rotate is illustrated. However, the structure which supports the table board 11 by structures other than the support part 35 may be sufficient.

For example, as shown in FIGS. 8A to 8F, a cover plate 91 and an upper end support portion 93 may be provided instead of the cover plate 23 and the support portion 35.
The cover plate 91 is disposed on the rear side of the position where the cover plate 23 is provided, that is, at a position spaced from the table plate 11. Although the upper end support portion 93 does not itself displace, when the table plate 11 transitions to a use state at the upper position (when rotating backward), the table plate 11 has an angle shown in FIG. 8B. Contact the lower surface 13.

  When the table plate 11 further rotates from the state shown in FIG. 8B, the table plate 11 rotates using the upper end support portion 93 as a fulcrum, and the support shaft 17 moves upward. Since the upward movement of the slide base 37 is suppressed, the absorber 39 extends to generate a resistance force, and the rotation speed of the table plate 11 is suppressed.

  8A to 8F exemplify a configuration in which the cover plate 91 is disposed on the rear side of the cover plate 23, the cover plate 91 may be at the same position as the cover plate 23. The position is not particularly limited.

  8A to 8F, the support portion 35 does not always need to support the table plate 11 from below during execution of the rotational displacement of the table plate 11, and at least the rotational displacement of the support plate 35 is not necessary. If the table plate 11 is supported from below in some sections, the support shaft 17 can be raised in the sections.

  [2B] In the above-described embodiment, the configuration in which the height of the table plate 11 where the push-up portion 33 finishes pushing up the table plate 11 and the height at which the table plate 11 can be changed to the use state is exemplified. However, these heights may be different. At least, the slide base 37 comes into contact with the stopper 31a before the lift of the support shaft 17 so that the absorber 39 extends while the support shaft 17 is lifted by the rotation of the table plate 11, and the push-up portion is pushed up. The push-up by 33 may be configured to end.

  That is, when the support shaft 17 is positioned further upward from the position of the support shaft 17 when the support shaft 17 starts to rise due to the rotation of the table plate 11, the push-up by the push-up portion 33 ends (the absorber 39 starts to expand). The structure may be sufficient, and the structure by which pushing-up by the push-up part 33 is complete | finished when the support shaft 17 is located below the position where the raise of the support shaft 17 starts may be sufficient.

  [2C] In the above-described embodiment, the configuration using the absorber 39 that generates a resistance force when extended as the speed suppressing unit is illustrated, but an absorber that generates a resistance force even when contracting may be used.

  Moreover, as long as the speed suppression part can suppress the moving speed of the support shaft 17, you may employ | adopt things other than the absorber 39. FIG. For example, a configuration may be provided in which a friction member that contacts the support shaft 17 and generates a frictional force when the support shaft 17 moves within the predetermined range described above may be provided. Further, an elastic member such as a coil spring may be used instead of the absorber. In the present embodiment, the configuration in which the damping force of the absorber 39 is used as a resistance force is exemplified, but various devices that convert the kinetic energy of the support shaft 17 into elastic energy, thermal energy, or positional energy can be used.

  Moreover, although the absorber 39 illustrated the structure provided under the predetermined area | region (below the support shaft 17), you may provide in the position of other than that. For example, an absorber or a spring that generates a resistance force by contracting may be installed above the support shaft 17 so that the resistance force is applied to the support shaft 17 when the support shaft 17 moves upward. Good.

  Moreover, the speed suppression part should just suppress a moving speed, when the support shaft 17 moves in a predetermined range. This can be paraphrased as a resistance generated due to the movement of the support shaft 17.

  [2D] In the above-described embodiment, the configuration in which the support shaft 17 is provided at the lower end of the table plate 11 is illustrated, but the position where the support shaft 17 is provided is not limited to the lower end of the table plate 11 and is located on the upper end side of the lower end. It may be a position. However, the lower end portion of the table plate 11 with respect to the support shaft 17 protrudes forward from the guide groove 65 when the table plate 11 is rotationally displaced from the unused state to the used state. In order to reduce the size of 1, it is desirable to make the lower end portion of the support shaft 17 as small as possible.

  The support portion 35 supports the table plate 11 at a position between the upper end portion 11a of the table plate 11 and the position where the support shaft 17 is provided, so that the upper end portion 11a can be rotated downward. When it is displaced, the support shaft 17 is raised.

  [2E] In the above embodiment, the support shaft 17, the center rail 31, the push-up portion 33, and the support blocks 61 and 63 are exemplified as the guide mechanism. However, the guide mechanism may be configured by other configurations. The moving portion exemplified by the support shaft 17 may be provided at a position that rises when the table plate 11 is rotationally displaced to the use state. For example, the moving portion may be provided at the center in the left-right direction at the lower end of the table plate 11. Good. The guide part exemplified by the center rail 31, the push-up part 33, and the support blocks 61 and 63 may be any part that guides the movement of the moving part in the vertical direction. That is, various sliding mechanisms can be employed as the moving unit and the guiding unit.

  [2F] In the above-described embodiment, the guide grooves 65 of the support blocks 61 and 63 are formed in the vertical direction, and the configuration that restricts the movement of the support shaft 17 only in the vertical direction is exemplified. The vertical direction is not limited to the vertical direction, and may be inclined with respect to the vertical direction. The guide groove 65 may be curved.

  [2G] In the above embodiment, the predetermined range, which is the movement range of the support shaft 17 in which the absorber 39 functions, is a fixed range at the upper end of the movable range of the support shaft 17. There may be. For example, the absorber 39 may be configured to function in the entire movable range of the support shaft 17.

  [2H] Functions of M components (M is an integer of 1 or more) in the above embodiment are distributed as N (N is an integer greater than M) components, or functions of N components May be integrated into M components. Further, at least a part of the configuration of the above embodiment may be replaced with a known configuration having the same function. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified only by the wording described in the claim are embodiment of this invention.

DESCRIPTION OF SYMBOLS 1 ... Table system, 3 ... Chair, 5 ... Back board, 11 ... Table board, 11a ... Upper end part, 11b ... Lower end part, 11c ... End surface, 13 ... Lower surface, 15 ... Hand part, 17 ... Supporting shaft, 21 ... Storage 23: Cover plate, 25 ... Back plate, 27 ... Left side, 27a ... Left side rail, 29 ... Right side rail, 29a ... Right side rail, 30a ... Upper frame jumper, 30b ... Lower frame jumper, 31 ... Center rail , 31a ... stopper, 33 ... push-up part, 35 ... support part, 37 ... slide base, 39 ... absorber, 41 ... shaft support part, 41a ... through hole, 51 ... rotating shaft, 52 ... fin, 53 ... contact part, 55 ... Extension part, 57 ... Rotation suppression part, 59 ... Wound spring, 61,63 ... Support block, 65 ... Guide groove, 91 ... Cover plate, 93 ... Upper end support part

Claims (5)

A plate-like member, in which the main surface and the horizontal surface make a relatively large angle, and the rotational displacement so that the upper end, which is the portion located at the upper end in the unused state, moves downward. A table plate that is capable of transitioning to a use state in which the angle is relatively small by
By supporting the table plate that is performing the rotational displacement from below, a support part that raises the lower end part that is the end part opposite to the upper end part as the upper end part descends;
A guide mechanism including a moving portion provided in a portion of the table plate that rises during the execution of the rotational displacement, and a guide portion that guides the moving portion so as to be movable in the vertical direction;
A speed suppressing unit that suppresses the moving speed of the moving unit when the moving unit moves upward in a predetermined range that is at least a part of a range in which the moving unit is movable; A table system characterized by comprising. A non-moving portion that is disposed below the predetermined range and does not move when the moving portion moves in the predetermined range;
The speed suppression unit is variable in length from one end to the other end, and generates a resistance force to an operation in which the length from the one end to the other end increases.
In addition, the speed suppressing unit has one end connected to the moving unit and the other end connected to the non-moving unit, and the moving unit moves upward to extend from the one end to the other end. The table system according to claim 1, wherein the resistance force is generated when the value of the table increases, and the moving speed of the movement of the moving unit is suppressed. The table plate that is not in use can be stored, and an opening is formed in the upper part, and the storage unit is capable of pulling the table plate upward through the opening.
The table plate can transition to the use state in a state where the table plate is pulled out from the opening to a predetermined height,
The non-moving portion moves with the movement of the table plate when the moving portion is in a lower range that is a range below the predetermined range, and moves when the moving portion moves within the predetermined range. The table system according to claim 2, wherein the table system is not. The support portion has a contact portion that contacts a lower surface that is a surface facing the lower side of the table plate in the use state,
The contact portion is a support position for supporting the table plate in the use state from below, and a displacement position where the contact portion is displaced to a position closer to the moving portion in a horizontal direction than the support position; The table system according to any one of claims 1 to 3, wherein the table system can be rotated around a predetermined rotation axis. The table system according to any one of claims 1 to 4, wherein the moving unit is a rotation shaft of the table plate.