JP2013220670A - Wheeled trestle and movable-type utensil employing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the direction of a utensil having a large lateral width within a range of 90°.SOLUTION: A wheeled trestle 1A includes a pedestal plate 10A and a pair of horizontal rotary plates 20, 21 on which a plurality of wheels 25 are provided while being aligned in the direction thereof. The pair of horizontal rotary plates are pivotally attached at both end sides of a bottom face of the pedestal plate 10A to be rotatable around an pivot vertical to an installation surface. The wheeled trestle 1A moves along a predetermined track on the installation surface while mounting a utensil thereon. The horizontal rotary plates 20, 21 are connected by a link bar 30A so as to maintain a relation perpendicular to each other between the directions of the wheels 25. From a position where the direction of the wheels 25 of one horizontal rotary plate 21 is parallel to a longer diameter direction of the pedestal plate 10A and the direction of the wheels 25 of the other horizontal rotary plate 20 are parallel to a shorter diameter direction of the pedestal plate 10A, the utensil on the pedestal plate is turned at 90° by making one horizontal rotary plate 21 travel in the direction where the other horizontal rotary plate 20 is located and making the other horizontal rotary plate 20 travel in the direction where the wheels 25 are oriented, for a distance between pivots according to a predetermined method.

Description

  The present invention relates to a wheeled base and a movable fixture using the same, and more particularly to a wheeled base that can change the orientation of the fixture by running it with a fixture such as a TV set or furniture, and the like. It is related with the fixture which was equipped with and was movable at the bottom side.

  In recent years, televisions having a large display that is thin and over 40 inches have been widely used even in ordinary homes. As shown in FIG. 9A, such a large TV is placed on a box-shaped TV stand 100 having a horizontal width equal to or greater than that of the screen so that the room can be used as widely as possible. It is usually placed near the corner.

  The room shown in the figure is a living-dining room where a living room and a dining room, which are often used in general houses, are integrated, but the TV 50 placed on the wall near the corner is a relaxing part for the residents. By arranging the screen so that the screen faces the sofa 70, the line of sight of the person sitting on the sofa 70 (dashed line arrow) is perpendicular to the screen so that the image can be viewed most easily.

  However, when trying to watch the television 50 on the dining table 80 side, such as during a meal, the line of sight becomes an acute angle with respect to the screen of the television 50 in the arrangement as shown in the figure, so that the image is extremely difficult to see. Further, even if it is attempted to perform remote control operation of the television 50 at this position, the angle of the radio signal is often too sharp to operate sufficiently.

  In this case, it is conceivable to use the swing function of the TV 50 to direct the screen to the dining side, but since the angle at which the head can be swung is usually within 45 °, it is difficult to respond sufficiently. On the other hand, as described in JP-A-5-176262 and as shown in FIG. 9B, a pedestal 201 on which the television 50 is mounted rotates to turn the screen in a desired direction. 200 is known. However, when a large TV 50 exceeding 40 inches is arranged near the wall, even if the pedestal 201 is rotated, the corners on the back side immediately hit the back wall due to the large left and right width of the TV 50. The screen cannot be rotated until it is in the proper orientation.

  In addition, as described in, for example, Japanese Utility Model No. 3168401 and shown in FIG. 9C, a television set 300 which has a plurality of casters on its lower surface and is movable is also widely used. In this case, the orientation of the screen can be turned 90 ° by turning the TV stand 300 while changing the direction of the casters so as to separate the one end side from the wall surface and then moving the other end side to the wall.

  However, in this television stand 300, the direction of each caster is freely changed and the turning direction is difficult to determine, so that the screen of the television 50 is stopped at a desired orientation / position while accurately operating the television stand 300 alone. It is not easy to make it happen. In addition, when it is pushed in a direction perpendicular to the direction of the caster, the television 50 may fall down.

  On the other hand, as with the large-sized TVs described above, other furniture such as whiteboards, bookshelves, and sofas that are thin and have a relatively large left-right width, usually placed near the wall, can be oriented depending on the situation. There are many cases where it is desired to change within the range of 90 °. In this case as well, it is extremely convenient if the turning operation can be easily performed by one person.

JP-A-5-176262 Noto 3168401 gazette

  An object of the present invention is to solve the above-described problems, and an object of the present invention is to make it possible to easily change the orientation of a fixture having a large left-right width within a range of 90 °.

  Therefore, the present invention is oriented so that the base plate whose major axis in plan view is at least twice the minor axis and the upper surface is the mounting surface of the fixture, and the plurality of wheels run on the installation surface while rotating in the same direction. A pair of horizontal rotation plates that are provided on the lower surface side and are pivotally attached to both ends in the major axis direction of the lower surface of the pedestal plate so as to be rotatable around a pivot that is perpendicular to the installation surface. A pair of horizontal rotating plates that move along a predetermined track on a mounting surface by rotating a wheel with a fixture placed on the mounting surface, and the direction of the wheel between the pair of horizontal rotating plates is Linked with a link bar so as to rotate while maintaining a right angle relationship with each other, the direction of the wheel of one horizontal rotation plate is parallel to the major axis direction of the base plate, and the wheel of the other horizontal rotation plate From the position where the direction of the base plate is parallel to the minor axis direction of the base plate Is a predetermined method in which the distance between the pivots of the two horizontal rotary plates is determined in a predetermined direction in the direction in which the other horizontal rotary plate is located and the other horizontal rotary plate is in the direction in which the wheel to be rotated is directed. In this case, the direction of the wheel mounted on the pedestal plate is turned 90 ° while the direction of the wheel is displaced by 90 ° with respect to the direction of the pedestal plate.

  In this way, by connecting the two wheels with the link bar so as to maintain the angles at which the plurality of wheels fixed to the pair of horizontal rotation plates supporting the base plate are perpendicular to each other, By moving the rotating plate in the direction that the wheel is facing, the distance between the pivots, the orientation of the pedestal plate is turned 90 °, and the reverse operation returns to the original position / orientation accurately. Even when a fixture with a large left-right width is placed, the orientation can be changed accurately and easily within a range of 90 ° without requiring a large space.

  In addition, in the case of a 90 ° turning operation, the wheeled base is provided with a turning angle regulating means for regulating the possible range of turning within 90 °. Therefore, it is possible to avoid the excessive rotation and to facilitate the operation. In this case, the pedestal plate is substantially rectangular in plan view, the side of the link bar abuts the side of the pedestal plate at a position where the direction of the wheel of one horizontal rotation plate is parallel to the major axis direction of the pedestal plate, The side surface of the link bar is in contact with the side surface of the pedestal plate at a position where the direction of the wheel of the other horizontal rotating plate is parallel to the major axis direction of the pedestal plate. If the rotation operation exceeding the range is prevented, the rotation angle restricting means can be provided without adding a dedicated part.

  Further, at least three wheels are arranged at equal intervals on the same circumference centered on the pivot, and the link bar has both ends of a projecting portion formed by projecting the outer peripheral sides of both horizontal rotating plates in the centrifugal direction. If the sides are connected to each other and operate while maintaining a state of being always parallel to the major axis direction of the pedestal plate at the time of turning, it is mounted while stably turning within a range of at least 90 °. The orientation of the fixture can be easily changed.

  Furthermore, in the above-described wheeled base, the base plate is divided into two parts each provided with a horizontal rotating plate, the link bar has a length adjusting function, and the distance between both horizontal rotating plates is If the length of the pedestal plate in the major axis direction can be changed within a predetermined range, it is possible to deal with various fixtures having left and right widths.

  In addition, the above-described wheeled base is provided on the bottom surface side, and it is possible to turn in a direction within a predetermined angle within a predetermined movement range by running the wheel by a predetermined method. If it is set as the movable fixture, it will become very convenient as a fixture provided with the function of the above-mentioned gantry with a wheel from the beginning. In this case, if the fixture is one of TV, TV stand, whiteboard, bookshelf, chiffon, sofa, partition, gate, it should be used as an extremely convenient fixture. Can do.

  According to the present invention in which a plurality of wheels fixed in the same direction are maintained at an angle that is perpendicular to each other between the two horizontal rotating plates, the orientation of the fixture with a large left-right width can be easily changed within a range of 90 °. It will be possible.

It is a perspective view of a gantry with wheels which is a 1st embodiment in the present invention. It is a disassembled perspective view of the mount frame with a wheel of FIG. (A), (B), (C) is the simplified top view for demonstrating operation | movement of the mount frame with a wheel of FIG. It is a front view which shows an example of the use condition of the mount frame with a wheel of FIG. It is a front view which shows an example of the use condition of the mount frame with a wheel of FIG. It is a perspective view of the mount with a wheel which is the 2nd embodiment in the present invention. It is a front view which shows an example of the use condition of the mount frame with a wheel of FIG. It is a perspective view which shows the application example of the mount frame with a wheel of FIG. (A), (B), (C) is a top view which shows a prior art example.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a wheeled base 1A according to the present embodiment. This pedestal 1A with a wheel is installed with a base plate 10A made of a plate formed in a rectangle whose major axis is twice or more the minor axis in plan view and a plurality of wheels 25, 25, 25, 25 rotating in the same direction. It is fixed in a state of being aligned in a direction so as to run on the surface, and is provided on the lower surface side and is pivotally attached to both ends of the lower surface in the major axis direction of the lower surface of the base plate 10A so as to be rotatable around a pivot axis perpendicular to the installation surface. A pair of horizontal rotating plates 20 and 21 are provided.

  As shown in the exploded perspective view of FIG. 2, the pair of horizontal rotating plates 20 and 21 has a shape of projecting portions 20 a and 21 a by projecting a part of the outer peripheral side of a substantially circular plate material in the centrifugal direction. The link bar 30A is located at the position of the projections 20a and 21a so that the directions of the wheels 25 of the both horizontal rotation plates 20 and 21 rotate while maintaining a right angle when traveling between the two. It is connected.

  The direction of the wheel 25 of one horizontal rotation plate is parallel to the major axis direction of the pedestal plate 10A, and the direction of the wheel 25 of the other horizontal rotation plate is parallel to the minor axis direction of the pedestal plate 10A. From the position, the former horizontal rotating plate is set in the direction where the latter horizontal rotating plate is located, and the latter horizontal rotating plate is set in the direction in which the wheel 25 on the rotation direction side faces, respectively. , 21 is manually moved by the distance between the pivots of each of the two axes, so that the direction of the wheel mounted on the base plate 10A is turned 90 ° while the direction of each wheel 25 is displaced by 90 ° with respect to the base plate 10A. This is a feature of the present invention.

  The configuration of the present embodiment will be described in detail with reference to FIG. 2. The pair of horizontal rotation plates 20 and 21 is made of a plate material having the same shape in which the bolt holes 20b and 21b pass through the center portion, While holding the needle pins 400 in the radially formed slits and interposing the disc-like needle holding plate 40 constituting the needle bearing on the upper surface side, the bolt holes 10a and 10b and the bolt holes 20b of the base plate 10A, Bolts 60, 60 inserted through 21b are screwed with nuts 61, 61, and are attached to both ends of the lower surface of the base plate 10A so as to be pivotable about the pivot axis.

  On each lower surface of the horizontal rotating plates 20 and 21, four wheels 25 are screwed in a state in which they are arranged at equal intervals on the same circumference centered on the bolt holes 20b and 21b and aligned. . The protrusions 20a and 21a are formed along a centrifugal line passing through the middle of the mounting positions of two adjacent wheels 25 and 25 adjacent to each other with the bolt holes 20b and 21b as starting points.

  Then, the bolts 60, 60 inserted into the bolt holes 310, 311 at both ends of the link bar 30A at the positions of the bolt holes 210, 211 formed on the respective centrifugal lines are arranged so that the centrifugal lines are aligned in parallel. 61, the wheels 25 of the horizontal rotating plates 20 and 21 are maintained at right angles to each other.

  Further, at the position where the direction of the wheel 25 of one horizontal rotation plate is parallel to the major axis direction of the pedestal plate 10A, the side surface of the link bar 30A abuts the side surface of the pedestal plate 10A, and the other horizontal rotation plate The rotation angle at which the side surface of the link bar 30A abuts the side surface of the pedestal plate at a position where the direction of the wheel 25 is parallel to the major axis direction of the pedestal 10A, thereby stopping the rotation range of the pedestal plate within 90 °. The restricting means is configured to exhibit a stopper function.

  FIG. 3 shows a plan view for explaining the operation of the above-described wheel mount 1A. As shown in FIG. 3A, when a large television (not shown), for example, is placed on the pedestal 1A with wheels and arranged parallel to one wall near the corner, the left horizontal rotating plate 20 is placed. Each wheel 25 is oriented parallel to the short side direction of the pedestal plate 10A, and each wheel 25 of the right horizontal rotation plate 21 is oriented parallel to the long side direction of the pedestal plate 10A.

  When it is desired to turn the TV screen mounted on this wheel-mounted base 1A by 45 °, it is manually urged so that the right horizontal rotating plate 21 travels toward the position where the left horizontal rotating plate 20 is located. Alternatively, the left horizontal rotating plate 20 is manually urged so as to travel in the direction in which the wheel 25 on the side to which it rotates is turned to stop at the position shown in FIG. Furthermore, if the screen is to be rotated from the initial direction to 90 °, if the urging is continued from the position of FIG. 3B, the side surface of the link bar 30A is the position of the base plate 10A at the position of FIG. Stop at a turning angle of 90 ° by hitting the side.

  In this case, the wheel base 1A is accurately stopped in a parallel state near the corner wall as in the state before turning. Although illustration is omitted, if the reverse operation is performed from the position shown in FIG. 3C, the link bar 30A functions as a stopper at the position shown in FIG. It is designed to return to the correct position and orientation.

  Thus, the wheels 25 of the horizontally rotating plates 20 and 21 connected by the link bar 30A so as to maintain the directions perpendicular to each other at both ends of the pedestal plate 10A are horizontally rotated in the directions facing each other. Even if a large television is mounted, one person can rotate the orientation of the mounted television accurately by simply energizing it so that it travels the distance between the pivots of the plates 20 and 21. The direction can be easily and accurately changed.

  In this case, it is necessary for the realization of an accurate traveling track that a sufficient frictional force is exerted between the outer peripheral surface of each wheel 25 and the mounting surface so as not to cause a deviation. At least the ground contact surface of each wheel 25 is preferably made of a material having a large frictional force such as rubber. In addition, the frictional force increases as the mounted fixture becomes heavier. However, as long as this frictional force is sufficient, the wheels 25 of the horizontal rotating plates 20 and 21 maintain the directions perpendicular to each other without the link bar 30A. be able to.

  However, the link bar 30A should be indispensable from the viewpoint of installing in a state in which the directions of the wheels are deviated from a right angle relationship or avoiding the shift from gradually increasing due to a plurality of turning operations. In the present embodiment, the link bar 30A is highly useful in that it functions as a turning angle regulating means for stopping a turning operation exceeding 90 °.

  FIG. 4 shows the case where the TV stand 51 and the thin and large 50-inch TV 50 having a large left and right width are mounted on the wheel mount 1A described above, and FIG. 5 shows the case where the whiteboard 52 is mounted on the wheel mount 1A. Shows the case. These fixtures are thin and have a wide left and right width, and the front part is fixed, so they are generally placed near the walls of the room. It is easy to cause a rotation within a range of 90 °, and the convenience is excellent in that the direction can be easily changed.

  In addition, as other types of fixtures that have a large left-right width and are likely to need to be turned around, mobile blackboards, bookshelves, chests, cabinets, sofas, partitions, gates, etc. are assumed. By using it on the wheel base 1A, it can be easily and accurately turned by one person as described above, and both can exhibit excellent usability and convenience.

  FIG. 6: has shown the perspective view of the mount frame 1B with a wheel which is the 2nd Embodiment in this invention. Its basic structure and function are the same as those of the above-described wheeled base 1A. However, the base plate 10B is provided with horizontal rotating plates 20 and 21, respectively. 11 and 12 are divided.

  The link bar 30B is formed by inserting slide members 35b and 35c on both ends of the flange-shaped member 35a so as to be slidable in the length direction, and can be fixed at a desired bolt hole position by a bolt 60. It is provided with a length adjusting function, and is characterized in that the distance between both horizontal rotating plates 20 and 21 and the length in the major axis direction of the base plate 10B can be adjusted within a predetermined range.

  Therefore, it is possible to easily adjust the width of the mounting surface of the base plate 10B corresponding to various fixtures of the left and right widths. For example, as shown in FIG. Even in the case where it is placed, the left and right width can be adjusted exactly. In this case, it is necessary to adjust the connection state of the protrusions 20a, 21a of the horizontal rotating plates 20, 21 and the link bar 30B so that the wheels 25 are in a right angle relationship with each other.

  FIG. 8 shows a wheeled base 1C as an application example of the above-described wheeled base 1B. In this example, the base plate 10C is characterized in that three engagement claws 29 are provided on the upper surface of each of the divided base plates 11C and 12C to be engaged with the bottom surface of the mounted fixture. . Thereby, it is possible to minimize the fear that the fixture placed from the upper surface of the base plate 10C falls. Further, in this example, the link bar 30B is connected to the bottom surface side of the horizontal rotation plates 20 and 21, and does not function as a turning angle restricting means. This has the advantage that interference does not easily occur.

  In the above-described embodiment, the case where four wheels 25 are arranged on each of the horizontal rotation plates 20 and 21 has been described. However, at least three or more wheels may be included in one horizontal rotation plate. For example, as long as the fixtures placed in a state in which all the directions are aligned are not easily toppled, it is needless to say that the number and arrangement may be different from those.

  In addition, traveling with the wheels 25 includes traveling with a belt between a plurality of wheels as an endless track system. In this case, the friction of the mounting surface is excellent and the shift of the traveling track is reduced. It becomes easier to minimize. Further, it is more convenient if a lock mechanism for stopping the wheel 25 from freely rotating is attached, or if at least a part of the wheel 25 is automatically driven as a motor drive type.

  In addition, by providing the above-mentioned wheeled base as a movable fixture, which is integrally provided on the bottom side in advance, as a TV, TV stand, whiteboard, cabinet, bookshelf, chiffon, sofa, partition, gate, etc. In addition to saving the trouble of performing a proper mounting work, it becomes easier to avoid the falling of the fixture from the pedestal plate, so that the stability and safety are further improved.

  As described above, the orientation of a fixture having a large lateral width can be easily and accurately changed within a range of 90 ° according to the present invention.

  1A, 1B, 1C Wheeled base, 10A, 10B, 10C Base plate, 10a, 10b, 20a, 20b, 310, 311 Bolt hole, 11, 11C, 12, 12C Split base plate, 20, 21 Horizontal rotating plate, 25 wheels, 30A, 30B link bar, 50 TV, 51, 100, 200, 300 TV stand, 52 whiteboard, 53 bookshelves, 60 bolts, 61 nuts

Claims (7)

A base plate whose major axis in plan view is more than twice the minor axis and whose upper surface is the mounting surface of the fixture, and the lower surface side with the orientation fixed so that the wheels run on the installation surface while rotating in the same direction Provided with a pair of horizontal rotation plates that are pivotally attached to both ends of the lower surface of the base plate in the major axis direction so as to be rotatable about a pivot that is perpendicular to the installation surface, and a predetermined fixture is mounted A wheeled base that moves in a predetermined path on the installation surface by rotating the wheel on a surface,
The pair of horizontal rotating plates are connected by a link bar so that the directions of the wheels maintain a right-angled relationship with each other during traveling, and are connected by a link bar. From the position where the direction of the wheel is parallel to the major axis direction of the pedestal plate and the direction of the wheel of the other horizontal rotation plate is parallel to the minor axis direction of the pedestal plate, the one horizontal rotation The distance between the pivots of the two horizontal rotation plates is set in the direction in which the other horizontal rotation plate is located, and the other horizontal rotation plate is in the direction in which the wheel is turned. A wheeled pedestal characterized in that, by running in a predetermined method, the direction of the wheel is turned 90 ° while the direction of the wheel is displaced by 90 ° with respect to the direction of the pedestal plate, respectively. .   The wheeled gantry according to claim 1, wherein the wheeled gantry is provided with a turning angle restricting means for restricting the range in which the turning is possible within 90 °.   The pedestal plate is rectangular in plan view, and the side surface of the link bar abuts on the side surface of the pedestal plate at a position where the direction of the wheel of one of the horizontal rotation plates is parallel to the major axis direction of the pedestal plate. The side of the link bar is in contact with the side of the pedestal plate at a position where the direction of the wheel of the other horizontal rotating plate is parallel to the major axis direction of the pedestal plate. The pedestal with wheels according to claim 2, wherein a rolling operation exceeding a range of 90 ° is prevented by contact.   At least three or more of the wheels are arranged at equal intervals on the same circumference centered on the pivot, and the link bar has protrusions formed by protruding the outer peripheral sides of the horizontal rotating plates in the centrifugal direction. 4. The wheeled pedestal according to claim 1, wherein the pedestal is connected to each other and operates while maintaining a state of being always parallel to a major axis direction of the base plate during rotation.   The pedestal plate is divided into two with each of the horizontal rotation plates, the link bar has a length adjusting function, and the distance between the horizontal rotation plates and the length direction of the pedestal plate The wheeled base according to claim 1, 2, 3, or 4, wherein the length can be changed within a predetermined range.   A wheeled base according to claim 1, 2, 3, 4 or 5 is provided on the bottom surface side, and by rotating the wheel by a predetermined method, turning in a direction within a predetermined angle within a predetermined moving range is possible. A movable fixture characterized by being made possible.   The movable fixture according to claim 6, wherein the movable fixture is any one of a television, a television stand, a whiteboard, a bookshelf, a chiffon, a sofa, a partition, and a gate.

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