JP5125227B2 - Table board support structure - Google Patents

Description

  The present invention relates to a support structure for a table plate, and more particularly to a support structure for a table plate assembled so as to be rotatable in the vertical direction with respect to a wall surface.

As this type of table, for example, a technique related to Patent Document 1 is already known. In this technique, a table is mounted on a back surface of a seat back of a seat via a hinge so that one end of the table can be turned up and down, and on which a desired article can be placed, and a rail provided on the back surface of the table plate It is mainly comprised from the shaft which is connected between the guide groove of a part and the back surface of a seat back, and supports a table plate. The table is used while the shaft is held in a state where the table plate is substantially horizontal.
JP 2002-36930 A

  However, the shaft is held by a cam member attached to the back surface of the seat back. For this reason, the cam member is exposed when the table plate is in a substantially horizontal use state, which is in a poor appearance for the user.

  An object of the present invention is to solve such a problem. An object of the present invention is to provide a table plate assembled to a wall surface via a hinge so as to be vertically rotatable, and a table connected between the table plate and the wall surface. A support structure that can hold the shaft in a good-looking manner even when the table is in use by holding the shaft in a state where the table plate is substantially horizontal. Is to provide.

The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is connected between the table plate assembled to be rotatable with respect to the wall surface in the vertical direction and the guide groove of the guide body provided on the wall surface and the back surface of the table plate. A table plate that is assembled with a shaft that supports the table plate so as to be pivotable in the vertical direction with respect to the wall surface. The table plate is used by holding the rotation of the shaft while the table plate is substantially horizontal. The shaft is a rigid rod member formed in a substantially U-shape, and a rotation shaft portion that is assembled to be rotatable in the vertical direction with respect to the wall surface, and both ends of the rotation shaft portion And a pair of left and right support portions extending in the form of a bent portion that is inserted into the guide groove at the free ends of both support portions and is movable in the guide groove in the inserted state. And both shaft bends Is inserted into the guide groove, a pair of left and right first cam surfaces are formed on both side surfaces of the guide body that come into contact with both free ends of the shaft along the moving direction of both bent portions, When the table plate is rotated from the lower side to the approximately horizontal state, both bent portions of the shaft move in the guide groove toward the end of the table plate on the rotation fulcrum side. Along with this, both free ends of the shaft are deflected away from or toward each other while being pressed against the first cam surface of the guide body, and when the table plate reaches a substantially horizontal state, The bending of the end is eliminated, and the rotation of the shaft relative to the wall surface is held along with the elimination of the bending, and the guide body is further supported from the state in which the table plate is substantially horizontal. When turned in the direction A relief body having guide grooves that allow further movement of both bent portions of the shaft to be extended is extended, and a pair of left and right second members that cause deflection at both free ends of the shaft are provided on both side surfaces of the relief body. The cam surface is formed .
According to this configuration, the table can be used while maintaining the rotation of the shaft in a state where the table plate is substantially horizontal, as in the prior art. At this time, the cam surface that holds the rotation of the shaft is provided on the back surface of the table plate, that is, at a position that is a blind spot for the user. Therefore, the appearance of the support structure that holds the rotation of the shaft can be improved. Further, according to this configuration, even when the table plate receives an excessive load further upward from the use state, both free ends of the shaft can move in the guide groove. Can be rotated. Therefore, the table plate is not damaged. At this time, since the second cam surface is inclined upward, both free ends of the shaft are pressed against the cam surface, and both free ends are deflected away from each other. Thereby, when the table plate receives an excessive load further upward from the use state, the excessive load can be absorbed by the bending force of both free ends of the shaft.

The invention according to claim 2 is the support structure for the table plate according to claim 1, wherein the guide groove of the guide body is substantially parallel to the wall surface from a state in which the table plate is substantially horizontal. It is formed to allow the movement of both bent portions of the shaft according to the rotation to the state, and in the intermediate state between these two states, the bending occurring at both free ends of the corresponding shaft is maximized, and The cam surface is set so that the bending occurring at both free ends of the corresponding shaft increases in the intermediate state from these two states to the intermediate state.
According to this configuration, the rotating state of the shaft can be maintained in the stored state of the table as in the used state of the table. Therefore, the table can be held in the stored state without requiring a lock member that holds the rotation of the shaft.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
Example 1
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a rear perspective view of a table according to Embodiment 1 of the present invention. FIG. 2 is a view showing the back surface of the table plate of FIG. FIG. 3 is a view showing the shaft of FIG. FIG. 4 is a side view of the table of FIG. 1 and shows a state of the table plate corresponding to the movement of the free end of the shaft. 5 is a cross-sectional view taken along line AA in FIG. 6 to 9 are front perspective views corresponding to the respective states of the table plate of FIG. In addition, in these FIGS. 6-9, in order to make the state of a table easy to see, description of a seat back is abbreviate | omitted.

  First, the configuration of the table according to the first embodiment of the present invention will be described. As shown in FIG. 1, the table is mainly composed of a table plate 20 and a shaft 40. Below, the table board 20 and the shaft 40 which are each these structural members are demonstrated separately.

  First, the table plate 20 will be described. As shown in FIG. 2, the table plate 20 is a substantially rectangular plate member, and is formed from, for example, a resin molded product. Returning to FIG. 1, a pair of left and right guide bodies 30 (30 a, 30 b) that are substantially U-shaped are perpendicular to the width direction of the table plate 20 at the center in the width direction of the back surface of the table plate 20. Is provided. At this time, the guide body 30 is provided so that each substantially U-shaped free end of the guide body 30 is joined to the back surface of the table plate 20. Thereby, a gap is generated between the back surface of the table plate 20 and the guide body 30. Both of these gaps are guide grooves 31 (31a, 31b) described later.

  Returning to FIG. 2, a pair of left and right first cam surfaces 32 (32a, 32b) are formed on the left and right side surfaces of the guide body 30 so as to rise in a direction perpendicular to the longitudinal direction. . The first cam surface 32 will be described in detail. The first cam surface 32 has a central portion in the longitudinal direction of the guide body 30 and an end portion on the rotation fulcrum side of the table plate 20 (hereinafter referred to as “storage side end”). 2, that is, in the lower half in the longitudinal direction of the guide body 30 in FIG. 2. The central portion and the storage-side end portion serve as both raised base ends forming the cam surface 32. Hereinafter, both of these base ends will be referred to as a first base end 33 (33a, 33b) and a second base end 34 (34a, 34b), respectively. The top of the first cam surface 32 that rises is referred to as a first top end 35 (35a, 35b).

  Next, the shaft 40 will be described. As shown in FIG. 3, the shaft 40 is a substantially U-shaped bar member composed of a rotating shaft part 41 and both support parts 42, and is formed by bending a round bar made of metal (for example, SUS), for example. Has been. In addition, bent portions 42b are formed at the free ends 42a, which are the tips of the support portions 42, in a direction toward each other.

  Next, returning to FIG. 1, a method for assembling a table composed of the table plate 20 and the shaft 40 described above will be described. First, one end of the back surface of the table plate 20 is assembled to a predetermined position on the back surface 10 of the seat back of a seat of a vehicle (not shown) via a pair of left and right hinges 11. Thereby, the table board 20 can be rotated in the up-down direction around the axial center with the width direction as the axial direction.

  Next, the rotating shaft portion 41 of the shaft 40 is assembled to a predetermined portion of the back surface 10 of the seat back via the washer 12. As a result, the shaft 40 can be rotated in the vertical direction around the axis of the rotation shaft portion 41 in the same manner as the rotation of the table plate 20. Thereafter, both bent portions 42b of the shaft 40 are bent in directions away from each other and inserted into both guide grooves 31 on the back surface of the table plate 20, respectively. In this way, the table is assembled.

  In addition, the back surface 10 of the seat back is provided with a lock member 13 that holds both the support portions 42 of the shaft 40 when the table is in use. If this lock member 13 is explained in full detail, as shown in FIG. 5, the lock member 13 is comprised from the substantially U-shaped elastic member, for example, is comprised from the leaf | plate spring. On both inner surfaces of the pair of opposed pieces 13a having a substantially U-shape, recesses 13b capable of sandwiching the outer peripheral surfaces of both support portions 42 of the shaft 40 are formed. Then, in the state of use of the table, the support portions 42 are positioned in the recesses 13b, so that the support portions 42 are sandwiched between the opposing pieces 13a, and the shaft 40 is locked by this sandwiching.

Subsequently, the operation of the table described above will be described.
First, the case where the table is used, that is, the case where the table is shifted from the stored state to the used state will be described. The stowed state is a state in which the table plate 20 is substantially parallel to the back surface 10 of the seat back, and is a state shown in (1) of FIG. 4 and a state shown in FIG. On the other hand, the use state is a state in which the table plate 20 is substantially horizontal, and is the state shown in (4) of FIG. 4 and the state shown in FIG. In this storage state, both bent portions 42b of the shaft 40 are end portions opposite to the storage side end portions in both guide grooves 31 (hereinafter referred to as “use side end portions”), that is, the upper end portion in FIG. (State shown in (1) of FIG. 2).

  The user rotates the table plate 20 so as to lift it upward. Then, along with this turning operation, the shaft 40 is also turned upward, and the bent portion 42b of the shaft moves in the guide groove 31 of the guide body 30 in the direction of the end on the turning fulcrum side of the table plate 20. That is, it moves downward in FIG. At this time, both free ends 42 a of the shaft 40 move in such a manner that they slide on both side surfaces of the guide body 30.

  When the table plate 20 is rotated until both free ends 42a of the shaft 40 reach the first base end 33 (the state shown in (2) of FIG. 2) (the state shown in (2) of FIG. 4 and FIG. 7). The cam surface 32 rises and is inclined from there. As a result, both free ends 42a of the shaft 40 are pressed against the cam surface 32, and both free ends 42a are bent away from each other. Therefore, when both the free ends 42a of the shaft 40 pass the first base end 33, the user must bend both the free ends 42a of the shaft 40 in order to turn the table plate 20 upward. Therefore, a great force is required for the user.

  Further, when the table plate 20 is rotated until both the free ends 42a of the shaft 40 reach the first top end 35 (the state shown in (3) of FIG. 2) (the state and diagram shown in (3) of FIG. 4). 8), from which the cam surface 32 is inclined. Thereby, the pressure from the cam surface 32 is canceled at both free ends 42a of the shaft 40, and the bending at both free ends 42a is eliminated. At this time, the restoring force of bending acts to rotate the table plate 20 upward. Therefore, when both free ends 42a of the shaft 40 pass the top end 35, almost no user force is required to rotate the table plate 20 upward.

  When the both free ends 42a of the shaft 40 reach the second base end 34 (the state shown in FIG. 2 (4)), the bending of the both free ends 42a of the shaft 40 is completely eliminated, and the table plate 20 is It becomes a use state (the state shown in (4) of FIG. 4 and the state shown in FIG. 9). At this time, both free ends 42a of the shaft 40 are in a state in which the movement back by the cam surface 32 is restricted. Thereby, the rotation state of the shaft 40 is held, and as a result, the use state of the table plate 20 is held. At this time, both the support portions 42 of the shaft 40 are locked by the already-described lock member 13. Therefore, no play occurs when the table plate 20 is in use.

  Next, a case where the table is stored will be described. In this case, the user performs an operation opposite to the operation described above. The user rotates the table plate 20 so as to push it downward. Then, along with this turning operation, the shaft 40 is also turned downward, and the bent portion 42b of the shaft moves in the guide groove 31 of the guide body 30 in the direction of the storage side end, that is, in FIG. Move in the direction.

  At this time, until both free ends 42 a of the shaft 40 reach the top end 35, in the above description of the use operation of the table, both free ends 42 a of the shaft 40 are changed from the first base end 33 to the top end 35. Similar to the description up until reaching, a large force is required for the user to rotate the table plate 20 downward. As is clear from this description, the table is kept in use when the loading load of the table plate 20 is smaller than this large force, and conversely, when the load is larger than this large force, the use state of the table is released.

  Further, in the description of the table use operation described above, the both free ends 42a of the shaft 40 are not moved until the both free ends 42a of the shaft 40 pass the first top end 35 and reach the first base end 33. Similar to the description from the first top end 35 to the second base end 34, almost no force is required to rotate the table plate 20 downward. The table plate 20 is rotated downward by its own weight until both free ends 42a of the shaft 40 pass the first top end 35 and reach the storage end. In this way, the table is returned to the stored state.

  The table according to the first embodiment of the present invention is configured as described above. According to this configuration, the table can be used while maintaining the rotation of the shaft 40 in a state where the table plate 20 is substantially horizontal, as in the prior art. At this time, the cam surface 32 that holds the rotation of the shaft 40 is provided on the back surface of the table plate 20, that is, at a position that is a blind spot for the user. Therefore, the appearance of the support structure that holds the rotation of the shaft 40 can be improved.

(Example 2)
A second embodiment of the present invention will be described with reference to FIGS.
FIG. 10 is a view showing the back surface of the table plate according to the second embodiment of the present invention. FIG. 11 is a side view of a table according to the second embodiment of the present invention, and shows a state of the table plate corresponding to the movement of the free end of the shaft. In the following description, members having the same or equivalent configuration as those in the first embodiment are denoted by the same reference numerals in the drawings, and redundant description is omitted. This is the same in the third and later embodiments described later.

  The second embodiment is different from the first embodiment described above in the shape of the first cam surface 32 formed on the side surface of the guide body 30 provided on the back surface of the table plate 20. As is clear from FIG. 10, in the second embodiment, all the left and right side surfaces of the guide body 30 are the first cam surfaces 32. The first cam surface 32 will be described in detail. The first base end 33 is formed at the storage side end of the guide body 30. Further, the first top end 35 is formed at the center of the guide body 30 in the longitudinal direction. The second base end 34 is provided at the same position as described in the first embodiment. As in the first embodiment, both free ends 42a of the shaft 40 are from the first base end 33 (state shown in (1) of FIG. 10) to the first top end 35 (shown in (2) of FIG. 10). State) to the second base end 34 (state shown in FIG. 10 (3)) can be reciprocated.

  The table according to the second embodiment of the present invention is configured as described above. According to this configuration, the table can be used by rotating the table plate 20 up and down as in the description of the first embodiment (states shown in (1), (2), and (3) of FIG. 11). Moreover, according to this structure, the rotation state of the shaft 40 can be held even in the storage state of the table, similarly to the use state of the table. Therefore, the table can be held in the stored state without requiring a lock member that holds the rotation of the shaft 40.

(Example 3)
A third embodiment of the present invention will be described with reference to FIGS.
FIG. 12 is a view showing the back surface of the table plate according to Embodiment 3 of the present invention. FIG. 13 is a side view of the table according to the third embodiment of the present invention, and shows the state of the table plate corresponding to the movement of the free end of the shaft. 14 is a cross-sectional view taken along line BB in FIG.

  The third embodiment is different from the second embodiment described above in the shape of the first cam surface 32 formed on the side surface of the guide body 30 provided on the back surface of the table plate 20. As is apparent from FIG. 12, the guide body 30 of the third embodiment allows the movement of both bent portions 42b of the shaft 40 even when the table plate 20 is rotated further upward from the substantially horizontal state. An escape body 36 (36a, 36b) having a guide groove 31 is extended. A pair of left and right second cam surfaces 37 (37 a, 37 b) that cause the free ends 42 a of the shaft 40 to bend are extended from the first cam surface 32 on the left and right side surfaces of the escape body 36. It is formed with appearance. The raised top of the second cam surface 37 is referred to as a second top end 38 (38a, 38b).

  As in the second embodiment, both free ends 42a of the shaft 40 have a first base end 33 (state shown in (1) of FIG. 12) to a first top end 35 (shown in (2) of FIG. 12). State) to second base end 34 (state shown in (3) of FIG. 12) to second top end 38 (state shown in (4) of FIG. 12).

  The table according to the third embodiment of the present invention is configured as described above. According to this configuration, the table can be used by rotating the table plate 20 up and down as in the second embodiment (states shown in (1), (2), and (3) of FIG. 13). Further, according to this configuration, even when the table plate 20 receives an excessive load further upward from the use state, both free ends 42a of the shaft 40 are connected to the second base end 34 ((3) in FIG. 12). The state shown in FIG. 12 can be moved to the second top end 38 (the state shown in FIG. 12 (4)), so that the table plate 20 can be further rotated upward from the use state. Therefore, the table board 20 is not damaged.

  At this time, since the second cam surface 37 is rising and inclined, both free ends 42a of the shaft 40 are pressed against the cam surface 32, and both free ends 42a are bent away from each other. . Thereby, when the table board 20 receives an excessive load further upward from the use state, the excessive load can be absorbed by the bending force of both free ends 42 a of the shaft 40. Of course, when this excessive load is eliminated, the table plate 20 is rotated downward by the bending restoring force of both free ends 42a of the shaft 40 together with its own weight, and returned to the use state.

  Further, at this time, as is apparent from FIG. 14, both support portions 42 of the shaft 40 move toward the proximal end side of the opposed piece 13 a so as to drop off from the both concave portions 13 b of the lock member 13. As described above, when the table plate 20 receives an excessive load further upward from the use state, the opposing pieces 13a can bend away from each other, so that the lock member 13 is not damaged. For example, if the lock member is of a type that completely locks the rotation of the shaft 40, the lock member will be damaged if the table plate 20 receives an excessive load further upward from the use state. Such a situation occurs. However, if this type of locking member is used, there will be no occurrence of breakage.

Example 4
A fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 15 is a view showing the back surface of the table plate according to Embodiment 4 of the present invention. FIG. 16 is a diagram illustrating a shaft according to the fourth embodiment of the present invention.

  Compared with Example 1 already described, Example 4 is different in the formation site of the first cam surface 32 formed on the guide body 30 provided on the back surface of the table plate 20. That is, in the first embodiment, the first cam surface 32 is formed on the outer surface of the side surface of the guide body 30. On the other hand, as is clear from FIG. 15, in the fourth embodiment, the first cam surface 32 is formed on the inner surface of the guide body 30. And both the bending parts 42b of the shaft 40 are formed toward the direction which mutually distances so as to correspond to the 1st cam surface 32 formed in the inner surface side (refer FIG. 16).

  The table according to the fourth embodiment of the present invention is configured as described above. According to this configuration, the table can be used by rotating the table plate 20 up and down as in the first embodiment. Further, even when the first cam surface 32 is formed on the inner surface side as in the fourth embodiment, the configurations of the second and third embodiments already described can be added.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In each of the embodiments, as an example of assembling the table plate 20 and the shaft 40 to the wall surface, a configuration in which the table plate 20 and the shaft 40 are assembled to the back surface 10 of the seat back has been described as an example. However, the present invention is not limited to this, and may be assembled to the inner surface of the instrument panel of the vehicle.

FIG. 1 is a rear perspective view of a table according to Embodiment 1 of the present invention. FIG. 2 is a view showing the back surface of the table plate of FIG. FIG. 3 is a view showing the shaft of FIG. FIG. 4 is a side view of the table of FIG. 1 and shows a state of the table plate corresponding to the movement of the free end of the shaft. 5 is a cross-sectional view taken along line AA in FIG. 6 is a front perspective view corresponding to the state (1) of the table plate of FIG. FIG. 7 is a front perspective view corresponding to the state (2) of the table plate of FIG. FIG. 8 is a front perspective view corresponding to the state (3) of the table plate of FIG. FIG. 9 is a front perspective view corresponding to the state (4) of the table plate of FIG. FIG. 10 is a view showing the back surface of the table plate according to the second embodiment of the present invention. FIG. 11 is a side view of a table according to the second embodiment of the present invention, and shows a state of the table plate corresponding to the movement of the free end of the shaft. FIG. 12 is a view showing the back surface of the table plate according to Embodiment 3 of the present invention. FIG. 13 is a side view of the table according to the third embodiment of the present invention, and shows the state of the table plate corresponding to the movement of the free end of the shaft. 14 is a cross-sectional view taken along line BB in FIG. FIG. 15 is a view showing the back surface of the table plate according to Embodiment 4 of the present invention. FIG. 16 is a diagram illustrating a shaft according to the fourth embodiment of the present invention.

Explanation of symbols

10 Back of seat back (wall surface)
20 Table plate 30 Guide body 31 Guide groove 32 First cam surface 36 Relief body 37 Second cam surface 40 Shaft 41 Rotating shaft portion 42 Support portion 42a Free end 42b Bent portion

Claims (2)

It is connected between the table plate assembled so as to be rotatable in the vertical direction with respect to the wall surface, and the guide groove of the guide body provided on the back surface of the wall surface and rotated in the vertical direction with respect to the wall surface. It is composed of a shaft that can be assembled and supports the table plate, and is a table plate support structure that uses the table while maintaining the rotation of the shaft in a state where the table plate is substantially horizontal,
The shaft is a rigid bar member formed in a substantially U-shape, and includes a rotation shaft portion that is assembled so as to be rotatable in the vertical direction with respect to the wall surface, and left and right 1 extending at both ends of the rotation shaft portion. It consists of a pair of support parts,
At the free ends of both support portions, bent portions that are inserted into the guide grooves and are movable in the guide grooves in the inserted state are respectively formed.
When both bent portions of the shaft are inserted into the guide grooves, a pair of first cam surfaces on the left and right sides along the moving direction of both bent portions are formed on both side surfaces of the guide body that are in contact with both free ends of the shaft. Formed,
When the table plate is rotated from the lower direction to a substantially horizontal state, both bent portions of the shaft move in the guide groove toward the end of the table plate on the rotation fulcrum side,
Along with this movement, both free ends of the shaft are deflected in a direction away from or close to each other while being pressed by the first cam surface of the guide body,
When the table plate reaches a substantially horizontal state, the bending of both free ends of the shaft is eliminated,
Along with the elimination of this bending, the rotation of the shaft relative to the wall surface is a support structure of the table plate that is held,
The guide body is provided with a relief body having guide grooves that allow further movement of both bent portions of the corresponding shaft when the table plate is further turned upward from a substantially horizontal state. A support structure for a table plate, characterized in that a pair of left and right second cam surfaces that cause deflection at both free ends of the shaft are formed on both side surfaces of the relief body . It is a support structure of the table board of Claim 1, Comprising:
The guide groove of the guide body is formed to allow the movement of both bent portions of the shaft according to the rotation from the state in which the table plate is substantially horizontal to the state in which it is substantially parallel to the wall surface,
In the intermediate state between these two states, the bending that occurs at both free ends of the corresponding shaft is maximized, and the bending that occurs at both free ends of the corresponding shaft in the intermediate state from these both states to the intermediate state. A support structure for a table plate, wherein cam surfaces are set so as to increase.

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