JP6415064B2 - Caster table - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster-in / out-type desk that can be easily moved by taking out a caster when moving, and that can be securely fixed by storing the caster during use.

  Conventionally, for example, the one disclosed in Patent Document 1 is known as the above-mentioned caster-in / out-type desk. A lock mechanism that locks the plate in the flip-up state and the horizontal use state, and a lock release lever that releases the lock and allows the top plate to swing between the flip-up state and the horizontal use state. In addition, in order to facilitate the movement by taking out the caster when the desk is stored, it has a structure in which raising and lowering the top plate and taking in and out of the caster are interlocked.

JP2011-244845A

  However, the above-mentioned caster-in / out desk has a lock mechanism for locking the top plate and a lock release lever for releasing the lock in order to make it possible to flip the top plate and store it, so that the structure becomes complicated. There is an inconvenience that the assembly takes time and effort. In addition, the inventor of the present application examined the demands of such desk users, such as students, and found that the desk users do not necessarily need to be able to flip up the top plate to be stowable. did.

This invention is to solve the problems of the conventional caster access table in view of the above-mentioned knowledge of the inventor, the caster access table of this invention is
With the top plate,
A bracket portion fixed to the lower surface of the top plate, a column portion having an upper end fixed to the bracket portion and extending in the vertical direction, and a foot fixed to the lower end portion of the column portion and extending in the front-rear direction A leg having a portion;
A driven part that is guided to move up and down so as to maintain parallelism with the inner surface of the pillar part in the pillar part, and a caster that is fixed to a lower end part of the driven part and extends in the front-rear direction in the foot part A caster frame having a support portion and a plurality of casters supported by the caster support portion and arranged in the front-rear direction;
A caster elevating lever supported on the bracket portion so as to be swingable and positioned on a lower side portion of the top plate;
It engages with the upper end of the driven part and is coupled to the caster elevating lever through a shaft, and swings integrally with the caster elevating lever so that the caster frame is straight along the column with respect to the leg. The caster frame is moved up and down to raise the caster to the same height as the lower surface of the foot portion or higher than the lower surface of the foot portion, and at the lower position of the caster frame, the caster is lowered below the lower surface of the foot portion. A caster frame drive member to project
It is characterized by comprising.

  In the above-described caster entry / exit desk of the present invention, when the rear end portion of the caster lifting lever is lifted when the desk is moved, the caster frame driving member that engages with the upper end portion of the driven portion of the caster frame, Swing together with the caster lift lever to lower the caster frame with respect to the legs, and at the lowered position of the caster frame, a plurality of casters that are supported by the caster support part and aligned in the front-rear direction are below the lower surface of the leg foot part To protrude.

  Also, if the rear end of the caster lift lever is released when the desk is fixed, the top plate and the legs are lowered by their own weight, and the caster frame is relatively lifted. The caster frame driving member that engages with the upper end of the driven part of the caster swings integrally with the caster elevating lever to allow the caster frame to rise relative to the leg, and is supported by the caster support at the caster frame raised position. A plurality of casters arranged in the front-rear direction rise to the same height as the lower surface of the leg portion of the leg.

  Alternatively, when the desk is fixed, if the rear end of the caster lift lever is released and lowered, the caster lift lever is elastically oscillated and biased, and the upper end of the driven part of the caster frame The caster frame drive member that engages with the caster elevating lever swings integrally with the caster raising / lowering lever to raise the caster frame relative to the leg, or the caster frame is elastically raised and biased, and the upper end of the driven part of the caster frame The caster frame driving member that engages with the caster swings integrally with the caster elevating lever to allow the caster frame to rise with respect to the legs, so that the caster frame is supported by the caster support at the raised position of the caster frame and aligned in the front-back direction The casters rise to the same height as the lower surface of the leg foot or higher.

Therefore, according to the caster in / out type desk of the present invention, a simple caster in / out structure that can be combined with a desk having a top plate fixed to a leg is provided, and the labor and time for assembling the desk can be saved. Moreover, the conventional product could not be moved with the object placed on the top plate because the top plate was swung. On the other hand, according to the caster access table of the present invention, the object was placed on the top plate. The layout can be changed by moving the caster as it is, and when moving the desk during cleaning , the caster lift lever located on the lower side of the top plate can be held together with the top plate. Since the table can be moved by easily taking out the caster, it is possible to prevent a fall accident caused by lifting and moving the table , and the caster lifting lever is located on the lower side of the top plate. Ru can avoid the interference of the leg of the user.

  In the caster entry / exit desk according to the present invention, the rear end portion of the caster elevating lever is disposed close to the rear end portion of the top plate, and when lifted, the top plate is brought into contact with the lower surface of the top plate. It may be arranged close to the bottom surface, so that when the desk is moved, the rear end of the caster lift lever is held together with the rear end of the top plate and is brought into contact with the rear end of the top plate. By making contact, the caster frame can be easily maintained in the lowered position and the caster can be kept out without the need to provide a lock mechanism for the caster lifting lever. It is suitable when moving.

  Further, in the caster entry / exit desk according to the present invention, the caster frame driving member may be a cam member that is in sliding contact with an upper end portion of the driven portion of the caster frame. Since the driven portion of the caster frame is inserted from the lower end of the portion and the upper end portion of the driven portion is brought into contact with the cam member, the upper end portion of the driven portion and the cam member can be engaged. A caster loading / unloading structure that can be combined with a desk with a plate fixed to a leg can be further easily assembled and does not require time and effort.

It is a front view which shows one Example of the caster in / out type | formula desk of this invention in the state which raised the caster. It is a rear view which shows the caster access table of the said Example in the state which raised the caster. It is a side view which shows the caster entrance / exit desk of the said Example in the state which raised the caster. It is a bottom view which shows the caster access-type desk of the said Example in the state which raised the caster. It is sectional drawing which follows the AA line of FIG. 1 which shows the caster entrance / exit desk of the said Example in the state which raised the caster. It is sectional drawing which follows the BB line of FIG. 1 which shows the caster entrance-and-exit desk of the said Example in the state which raised the caster. It is sectional drawing in the position similar to FIG. 5 which shows the caster access table of the said Example in the state which lowered | hung the caster. It is sectional drawing in the position similar to FIG. 6 which shows the caster entrance / exit desk of the said Example in the state which raised the caster.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a front view showing an embodiment of a caster-in / out type desk according to the present invention in a state where the caster is raised, and FIG. 2 is a diagram showing the caster-in / out type desk of the above-described embodiment raised in the caster. FIG. 3 is a side view showing the caster entrance / exit desk of the above embodiment in a state where the caster is raised, and FIG. 4 is the caster entrance / exit desk of the above embodiment. FIG. 5 is a bottom view showing the state, FIG. 5 is a sectional view taken along the line A-A in FIG. It is sectional drawing which follows the BB line | wire of FIG. 1 which shows a caster entrance-and-exit desk in the state which raised the caster. In the following description, front, rear, left and right indicate directions viewed from the user located in front of the desk.

  The caster entrance / exit desk of this embodiment includes a top plate 1 and is fixed to a side portion of the lower surface of the top plate 1 so as to partially extend in a U-shaped cross section extending in the front-rear direction. A bracket portion 2 having a flange for mounting to the plate 1, a pipe-like column portion 3 that is fixed to the bracket portion 2 with its upper end portion extended in the vertical direction, and a front end portion at the lower end portion of the column portion 3 It has two legs 5 having left and right legs 5 having a foot part 4 with a U-shaped cross section that is fixed and extends in the front-rear direction, and the left and right legs 5 are the pillar parts 3 of the legs 5. The curtain plate 6 is integrally connected to each other via a curtain plate 6 that extends in the left-right direction and extends in the left-right direction and is hooked or bolted to the inner surface of the column portion 3. It is fixed to. Since the lower surfaces of the left and right legs 5 are in contact with and fixedly supported by the floor surface F, the caster entry / exit desk of this embodiment can be used as an ordinary desk having a top plate fixed to the legs.

  The caster entry / exit desk of this embodiment is also fixed to a pipe-like driven part 7 guided in the up-and-down movement in each column part 3 of the left and right legs 5 and a lower end part of the driven part 7. A caster support 8 having a U-shaped cross-section extending downward in the front-rear direction within each leg 4 of the left and right legs 5, and two casters arranged in the front-rear direction supported by the caster support 8 The caster 9 includes two caster frames 10 on the left and right sides. The upper end of each driven portion 7 closes the opening of the upper end and slides on the inner surface of the column portion 3 along the inner surface. An upper end cap 11 that guides raising and lowering is fixed, and the lower end portion of each column portion 3 closes the opening of the lower end portion and is in sliding contact with the lower end portion of the driven portion 7 and the inner surface of the column portion 3 and the covered portion. A lower end carriage that guides the raising and lowering of the driven part 7 while maintaining parallelism with the driving part 7 The rear end cap 13 that closes the opening of the rear end portion is fixed to the rear end portion of the foot portion 4 of each leg 5, and a thick plate-like female screw member 14 is fixed to the lower portion thereof. A resin foot 15 covered with resin on the head of the bolt is screwed onto the female screw member 14 from below so that the height can be adjusted. The lower surface of the lower end cap 12 and the lower surface of the resin foot 15 are connected as described below. The lower surface of the leg 5 which contacts the floor surface F when the caster 9 is raised is formed.

  The caster in / out type desk of this embodiment is further supported by the left and right bracket portions 2 so as to be swingable through the shafts 16 whose both ends are inserted into the bracket portions 2 of the left and right legs 5. The caster elevating lever 17 located near the right bracket portion 2 so as not to interfere with the user's leg on the lower side of the desk 1, and both end portions of the shaft 16 disposed in the bracket portion 2 of the left and right legs 5 And is engaged with or slidably contacted with the upper surface of the upper end cap 11 at the upper end portion of the driven portion 7, and swings integrally with the caster elevating lever 17 via the shaft 16. A caster frame drive cam 18 which is a cam member as a caster frame drive member that moves up and down with respect to the leg 5 is provided. Here, the rear end portion of the caster lift lever 17 is moved forward. The caster raising / lowering lever 17 is arranged by making it close to the rear end portion of the top plate 1 with respect to the directional position and bringing the front end portion in front of the shaft 16 into contact with the lower surface of the top plate 1 when the caster raising / lowering lever 17 is not operated. The rear end portion is disposed close to the lower surface of the top plate 1 when not operated with respect to the vertical position so that the rear end portion easily contacts the lower surface of the top plate 1 during the lifting operation. A rear end cap 19 that closes the opening of the rear end portion is fixed to the rear end portion of the bracket portion 2 of the left and right legs 5.

  FIG. 7 is a cross-sectional view at the same position as in FIG. 5 showing the caster access table of the above example in a state where the caster is lowered, and FIG. 8 shows the caster access table of the above example. It is sectional drawing in the position similar to FIG. 6 shown in the state which raised the caster. In the caster entrance / exit desk of this embodiment, when the desk is moved, as shown in FIG. 7, when the rear end portion of the caster elevating lever 17 is lifted by hand, the caster frame 10 in each leg 5 is moved. As shown in FIG. 8, the caster frame drive cam 18 that is in sliding contact with the upper end cap 11 at the upper end of the driven part 7 swings counterclockwise in the figure integrally with the caster elevating lever 10. The upper end cap 11 at the upper end is pushed down to make sliding contact between the outer surface of the resin upper end cap 11 with little sliding resistance and the smooth inner surface of the metal column 3 and the lower end of the metal driven portion 7. The caster frame 10 is guided and lowered along the inner surface of the column portion 3 with respect to the legs 5 by sliding contact between the smooth outer surface of the resin and the inner surface of the lower end cap 12 made of a resin having low sliding resistance. of At the descending position, the two casters 9 supported by the caster support portion 8 and arranged in the front-rear direction are projected downward from the lower surface of the foot portion 4 of the leg 5, that is, the lower surfaces of the lower end cap 12 and the resin foot 15. Further, the lower surface of the foot portion 4 of the leg 5 is lifted from the floor surface F, and the table can be easily moved by rolling the casters 9 on the floor surface F.

  When the desk is fixed, as shown in FIG. 5, if the rear end portion of the caster elevating lever 17 is released and lowered, the top plate 1, the left and right legs 5, and the curtain plate 6 are self-weighted. Thus, the lower surface of the foot portion 4 of the leg 5, that is, the lower surface of the lower end cap 12 and the resin foot 15 is lowered, and the caster frame 10 is relatively lifted with respect to the leg 5. The caster frame drive cam 18 slidably in contact with the upper end cap 11 at the upper end portion 7 swings clockwise in the drawing integrally with the caster elevating lever 17 to allow the caster frame 10 to be lifted with respect to the leg 5. As shown in FIG. 6, the two casters 9 that are supported by the caster support portion 8 and aligned in the front-rear direction are located on the lower surface of the foot portion 4 of the leg 5, that is, the lower end cap 12 and the resin foot 15. It rises to the lower surface of the same height, allowing the fixation of the desk by the contact between the lower surface and the floor F between the lower end cap 12 and the resin legs 15.

  Therefore, according to the caster in / out type desk of this embodiment, a simple caster in / out structure that can be combined with the desk on which the top plate 1 is fixed to the legs 5 is provided, and the time and labor for assembling the desk can be saved.

  Further, according to the caster entrance / exit desk of this embodiment, the rear end portion of the caster elevating lever 17 is disposed close to the rear end portion of the top plate 1 and is brought into contact with the lower surface of the top plate 1 when lifted. 7 is arranged close to the lower surface of the top plate 1 so that when the desk is moved, the rear end portion of the caster elevating lever 17 is grasped by hand together with the rear end portion of the top plate 1 as shown in FIG. By contacting the rear end of the plate 1, the caster frame 10 can be easily maintained at the lowered position and the caster 9 can be taken out without particularly providing a lock mechanism for the caster elevating lever 17. This is particularly suitable when the desk is moved a long distance to some extent.

  Further, according to the caster entrance / exit desk of this embodiment, the caster frame drive member is the caster frame drive cam 18 that is in sliding contact with the upper end cap 11 of the upper end portion of the driven portion 7 of the caster frame 10. The driven portion 7 of the caster frame 10 is inserted from the lower end of the column portion 3, and the upper end cap 11 at the upper end portion of the driven portion 7 is brought into contact with the caster frame driving cam 18. The caster frame drive cam 18 can be engaged, that is, slidably contacted, so that the caster loading / unloading structure that can be combined with the desk with the top plate 1 fixed to the legs 5 is made easier and less time-consuming. can do.

Although the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described examples, and can be appropriately changed within the scope of the claims. For example, the caster elevating lever 17 is shown in FIG. , 6 and a torsion spring that is always urged elastically toward the release position, and the caster frame 10 at the same height as the lower surface of the foot 4 of the leg 5 shown in FIGS. There may be provided a tension or compression spring that is always urged elastically toward, and in this way, when the rear end of the caster elevating lever 17 is released when the desk is fixed, The caster lift lever 17 is elastically oscillated and biased, and a caster frame drive cam 18 that engages with the upper end portion of the driven portion of the caster frame 10 is integrated with the caster lift lever 17. Dynamic and raises the casters frame 10 relative to the leg 5, or together with the caster frame 10 is elastically increased energized, caster frame for leg caster frame driving cam 18 is swung together with the caster lifting lever 17 10, the two casters 9 supported by the caster support portion 8 and arranged in the front-rear direction at the raised position of the caster frame 10 have the same height as the lower surface of the foot portion 4 of the leg 5 or It can be surely raised to a higher level.

  In the above embodiment, only one caster elevating lever 17 is provided below the right side of the lower surface of the top plate 1. However, in this invention, the caster elevating lever 1 is provided below the left side of the lower surface of the top plate. It may be provided under the book or the left and right sides. Further, in the above embodiment, the caster frame drive cam 18 is engaged as the caster frame drive member that engages with the upper end portion of the driven portion 7 and swings integrally with the caster lifting lever 17 to lift the caster frame 10 up and down with respect to the legs 5. Instead, an arm member that engages the upper end portion and the tip end portion of the driven portion 7 and swings integrally with the caster elevating lever 17 to elevate the caster frame 10 with respect to the leg 5 may be used. Alternatively, the caster elevating lever 17 may be swingably disposed in each bracket portion 2 and the front end portion of the caster elevating lever 17 positioned in front of the support shaft may be used as a caster frame driving member.

Thus, according to the caster in / out type desk of the present invention, a simple caster in / out structure that can be combined with a desk whose top plate is fixed to a leg is provided, and the labor and time for assembling the desk can be saved. Moreover, the conventional product could not be moved with the object placed on the top plate because the top plate was swung. On the other hand, according to the caster access table of the present invention, the object was placed on the top plate. The layout can be changed by moving the caster as it is, and when moving the desk during cleaning , the caster lift lever located on the lower side of the top plate can be held together with the top plate. Since the table can be moved by easily taking out the caster, it is possible to prevent a fall accident caused by lifting and moving the table , and the caster lifting lever is located on the lower side of the top plate. Ru can avoid the interference of the leg of the user.

DESCRIPTION OF SYMBOLS 1 Top plate 2 Bracket part 3 Column part 4 Leg part 5 Leg 6 Curtain board 7 Driven part 8 Caster support part 9 Caster 10 Caster frame 11 Upper end cap 12 Lower end cap 13, 19 Rear end cap 14 Female screw member 15 Resin foot 16 Shaft 17 Caster lifting lever 18 Caster frame drive cam F Floor

Claims (2)

With the top plate,
A bracket portion fixed to the lower surface of the top plate, a column portion having an upper end fixed to the bracket portion and extending in the vertical direction, and a foot fixed to the lower end portion of the column portion and extending in the front-rear direction A leg having a portion;
A driven part that is guided to move up and down so as to maintain parallelism with the inner surface of the pillar part in the pillar part, and a caster that is fixed to a lower end part of the driven part and extends in the front-rear direction in the foot part A caster frame having a support portion and a plurality of casters supported by the caster support portion and arranged in the front-rear direction;
A caster elevating lever supported on the bracket portion so as to be swingable and positioned on a lower side portion of the top plate;
It engages with the upper end of the driven part and is coupled to the caster elevating lever through a shaft, and swings integrally with the caster elevating lever so that the caster frame is straight along the column with respect to the leg. The caster frame is moved up and down to raise the caster to the same height as the lower surface of the foot portion or higher than the lower surface of the foot portion, and at the lower position of the caster frame, the caster is lowered below the lower surface of the foot portion. A caster frame drive member to project
The equipped,
The rear end portion of the caster elevating lever is disposed close to the rear end portion of the top plate, and is disposed close to the lower surface of the top plate so as to come into contact with the lower surface of the top plate when lifted. Caster entrance table. It said caster frame drive member, characterized in that it is a cam member sliding contact with the upper end portion of the driven portion of the caster frame, according to claim 1 caster out type desk according.

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