JP4097657B2 - Furniture and other support devices - Google Patents

Description

  The present invention relates to a support device for furniture and the like using a jack mechanism for raising and lowering a furniture body with respect to a floor surface.

In order to fix furniture with moving wheels on the bottom of the furniture body in a fixed position after movement, a pedestal provided on the bottom of the furniture body so as to be able to be raised and lowered is lowered with respect to the furniture body and landed. A support device such as furniture that raises the moving wheel together with the furniture body is known, for example, from Patent Document 1.
JP 2003-79460 A

  This type of support device is configured to drive a pedestal that can be raised and lowered with respect to the furniture body by a jack mechanism attached to the bottom of the furniture body, but is disclosed in Patent Document 1 and the like. The jack mechanism in this type of support device is composed of a combination of a gear mechanism and a link mechanism, and has a complicated structure and a large number of parts, necessitating a significant increase in the cost of furniture.

An object of the present invention is to provide a support device such as furniture that can solve the conventional problems as described above, and the means thereof is shown with reference numerals of embodiments described later. An upper mounting member 1 attached to the bottom of a supported main body (furniture 25) supported so as to be able to move up and down with respect to the supporting landing body (table wheel movable frame 28), and both ends of the upper mounting member 1 can only rotate. The supported horizontal screw shaft 2, the female screw body 3 screwed into the horizontal screw shaft 2, and the horizontal reciprocation of the female screw body 3 with respect to the support flooring body (the wheel movable frame 28). (Furniture 25) is a supporting device for furniture or the like provided with a rotation mechanism 33 for the horizontal screw shaft 2, and the link mechanism 5 is for supporting wearing. Lower attachment member 4 attached to the floor body (movable frame 28) A first link 19 whose both ends are supported by the female screw body 3 with horizontal support shafts 21 and 22, and a horizontal support shaft 23 and 24 whose both ends are connected to the midpoint of the first link 19 and the upper mounting member 1. In the support device such as furniture that is pivotally supported by the second link 20 that is symmetrically inclined with respect to the first link 19, the lower mounting member 4 is configured by bending a plate material, A groove portion 16 that is open on the upper side and is supported by the horizontal support shaft 22 by fitting the lower end of the first link 19; a vertical plate portion 17 that extends upward from one side plate portion of the groove shape portion 16; The vertical plate portion 17 includes a horizontal plate portion 18 that is horizontally bent in a direction opposite to the side where the groove portion 16 is located, and the lower mounting member 4 includes a bottom surface 16a of the groove portion 16. The vertical plate portion 17 is flush with the bottom surface of the movable frame 28 at the bottom of the furniture serving as the support landing body. While the horizontal plate portion 18 abuts against the inner surface of the architrave movable frame 28 abuts on the upper end face of the architrave movable frame 28 has a configuration which is attached to the architrave movable frame 28.

In practicing the present invention having the above-described configuration, specifically, as described in claim 2 , the first link 19 is formed of a groove-shaped member that is open on the second link 19 side. The upper end of the plate portion 19a is pivotally supported by the horizontal support shaft 21 with the lower part of the female screw body 3 sandwiched from the left and right, and the upper end of the second link 20 is the end portion of the horizontal screw shaft 2 on the second link 20 side. Is supported by the horizontal support shaft 23 in a state where it is loosely fitted between the both side mounting plate portions 9b and 9c that are bent from the bearing plate portion 9a that supports the first link 20, and the lower end of the second link 20 is It can be supported by the horizontal support shaft 24 in a state where it is loosely fitted between both side plate portions 19 a of the link 19.

Further, the horizontal screw shaft 2 is provided with a square hole 12 penetrating between both ends thereof, and the rotation operating means 33 is provided with square shafts 31 and 32 inserted through the square hole 12 of the horizontal screw shaft 2. Can do.

  A support device for furniture or the like according to the present invention having the above-described configuration is constituted by one horizontal screw shaft, a female screw body screwed into the horizontal screw shaft, and a link mechanism, and has a small number of parts, and is small and inexpensive. can do. Therefore, the support device according to the present invention is installed in a narrow space where the vertical height between the furniture main body and the pedestal arranged to be raised and lowered at the bottom of the furniture main body is not sufficient, and the furniture for the trolley It can be effectively used as a support device that allows the main body to be raised and lowered, and a significant increase in the cost of the entire furniture is avoided.

Moreover, the number of parts of the entire apparatus including the link mechanism can be very small, and when the supported main body is lowered with respect to the support landing body, the first link and the second link fall down. Since the inclination angle increases and approaches a horizontal posture, the maximum lowering level of the supported main body with respect to the support landing body can be made extremely low. In this case, the supported body is to be supported by the overturned link, but in actual use, when the supported body is lowered to some extent, the movement disposed on the bottom of the supported body (furniture body) Since the construction wheels are landed and support the supported body, there is no fear that an excessive bending force acts on the fallen link. Of course, when the supported body is raised with respect to the supporting landing body in order to lift the moving wheel from the floor surface, the supported body is supported by the link. Is in an upright position, and if the buckling strength of the link is increased, the supported body can be safely supported without any problem. Furthermore, it is not necessary to arrange a plate material for installing the support device at the bottom of the base wheel, and the vertical height of the space below the bottom of the supported main body (furniture main body) can be further reduced.

In addition, according to the structure of Claim 2 , while the horizontal width of the whole apparatus can fully be narrowed, a link can be arrange | positioned directly under a horizontal screw shaft, and the load bearing performance of an apparatus can be improved. The

  1 to 3, reference numeral 1 denotes an upper mounting member, 2 denotes a horizontal screw shaft, 3 denotes a female screw body, 4 denotes a lower mounting member, Reference numeral 5 denotes a link mechanism. The upper mounting member 1 is composed of a pair of right and left side frame members 6a and 6b using angle members and a pair of bearing members 7a and 7b fixed between both end portions of both side frame members 6a and 6b. Each of the bearing members 7a and 7b is a U-shaped plane, and is bent and provided along the both side frame members 6a and 6b in a direction away from the bearing plate portions 8a and 9a and the bearing plate portions 8a and 9a. It is composed of both side mounting plate portions 8b, 8c and 9b, 9c, and is fixed to both side frame members 6a, 6b at both side mounting plate portions 8b, 8c and 9b, 9c.

  The horizontal screw shaft 2 is composed of small-diameter shaft portions 10a and 10b at both ends that are supported through the bearing plate portions 8a and 9a of the bearing members 7a and 7b, and a screw shaft portion 11 in the middle thereof. A (hexagonal hole) 12 is penetrated concentrically. A thrust bearing 13 is interposed in the small-diameter shaft portion 10a between the bearing plate portion 8a and the screw shaft portion 11 of one bearing member 7a. Of course, a radial bearing can be interposed between the small-diameter shaft portions 10a and 10b and the bearing members 7a and 7b, if necessary.

  The female screw body 3 has a female screw hole 14 that is screwed into the screw shaft portion 11 of the horizontal screw shaft 2 and has a rectangular cross section that prevents rotation around the screw shaft portion 11 by the side frame members 6a and 6b. And includes a small width portion 15 protruding downward. The lower mounting member 4 is formed by bending a plate material, and includes an upper open groove portion 16, a vertical plate portion 17 extending upward from one side plate portion of the groove portion 16, It is comprised from the horizontal board part 18 which was bent and continued horizontally from the vertical board part 17 to the opposite side to the side where the groove-shaped part 16 exists.

  The link mechanism 5 includes a first link 19 and a second link 20. The first link 19 is constituted by a groove-shaped member that is open on the side on which the second link 20 is provided, and the upper ends of both side plate portions 19a sandwich the downwardly projecting small width portion 15 of the female screw body 3 from both the left and right sides. The lower mounting member 4 is pivotally supported on the female screw body 3 by the horizontal support shaft 21 in a state and the lower ends of both side plate portions 19 a are loosely fitted in the groove-shaped portion 16 of the lower mounting member 4. Are supported by a horizontal support shaft 22. The second link 20 is formed of a groove-shaped member that is open on one side of the first link 10, and its effective length is half of the effective length of the first link 19, and its both side plates The upper end of the portion 20a is pivotally supported by the horizontal support shaft 23 on the bearing member 7b in a state of loosely fitting in the lower half region between the both side mounting plate portions 9b, 9c of the bearing member 7b, and the lower end of the both side plate portions 20a. Is supported by a horizontal support shaft 24 at a midpoint in the length direction of the first link 19 in a state of loosely fitting between both side plate portions 19 a of the first link 19. Therefore, the first link 19 and the second link 20 are symmetrically inclined with respect to each other.

  In the support device having the above configuration, when the female screw body 3 is at the stroke end on the bearing member 7b side (the side where the second link 20 is present) as shown in FIG. 1, the rising angle of the first link 19 is maximized, The lower mounting member 4 is in a state where the maximum amount is lowered with respect to the upper mounting member 1, that is, the lower mounting member 4 is lowered to the level L. When the horizontal screw shaft 2 is rotated from this state and the female screw body 3 is moved to the side where the bearing member 7a is located, the first link 19 gradually falls while the posture is regulated by the second link 20, and the upper attachment The lower mounting member 4 is lifted from the member 1. At this time, the horizontal support shaft 22 that pivotally supports the first link 19 and the lower mounting member 4 moves up vertically, and the lower mounting member 4 does not move in the axial direction of the horizontal screw shaft 2. . Thus, when the female screw body 3 reaches the stroke end on the bearing member 7 a side, the rising angle of the first link 19 is minimized, and the lower mounting member 4 is increased by the maximum amount with respect to the upper mounting member 1. In other words, the lower mounting member 4 is raised to the level H. When the lower mounting member 4 at level H is lowered to level L, the horizontal screw shaft 2 may be rotated in reverse.

  Next, a usage example of the support device configured as described above will be described. 4 to 6, reference numeral 25 denotes furniture that can be used as a partition. The main body bottom plate 26 has a fixed frame 27 attached along the periphery of the main body bottom plate 26, and is moved up and down inside the fixed frame 27. A pedestal 29 comprising a movable frame 28 that fits freely is provided. Thus, at least four corners inside the base ring fixing frame 27 of the main body bottom plate 26, in the illustrated example, three positions on both sides parallel to the long side direction of the main body bottom plate 26 and the central position, respectively, a total of six positions. Support devices 30A to 30F configured as described above are attached. Specifically, each of the three support devices 30A to 30C and the support devices 30D to 30F arranged on both sides parallel to the long side direction of the main body bottom plate 26 has an upper side so that the horizontal screw shaft 2 is concentrically connected in series. The side frame members 6a and 6b of the attachment member 1 are attached to the bottom surface of the main body bottom plate 26 with wood screws or the like (see FIG. 2). And the vertical board part 17 and the horizontal board part 18 in the lower side attachment member 4 of each support apparatus 30A-30F are set to the inner surface and upper end surface of the carriage movable frame 28 adjacent to the outer side of each support apparatus 30A-30F. It is fixed with wood screws in the applied state. At this time, as shown in FIG. 2, the bottom surface 16 a of the groove-shaped portion 16 of the lower mounting member 4 is flush with the bottom surface of the base movable frame 28.

  Further, each of the three support devices 30A to 30C and the support devices 30D to 30F arranged on both sides parallel to the long side direction of the main body bottom plate 26 has one angular axis penetrating the square hole 12 of each horizontal screw shaft 2. The horizontal screw shafts 2 are connected to each other by (hexagonal shafts) 31 and 32 so as to rotate in conjunction with each other, and a rotation operation means 33 for interlockingly driving the both angular shafts 31 and 32 is provided. The rotation operating means 33 is built in a frame 34 attached to the bottom surface of the main body bottom plate 26 along the short side direction. As shown in FIG. 4, the relay shaft 35 and both ends of the relay shaft 35 are connected to each other. Two gearboxes 36 and 37 that are interlocked and connected to the both angular shafts 31 and 32, a vertical operation shaft 38 supported by one gearbox 36, and the upper side of the main body bottom plate 26 with respect to the operation shaft 38 (of the furniture 25) And a rotary operation lever 39 that can be freely inserted and removed from the inside. In each gear box 36 and 37, as shown in FIG. 7, the bevel gear 40 having a square hole through which the square shafts 31 and 32 pass, and the bevel gear 40 are engaged and fixed to both ends of the relay shaft 35. The bevel gear 41 is provided, and a bevel gear 42 that is engaged with the bevel gear 40 and fixed to the lower end of the operation shaft 38 is provided in one gear box 36.

  Further, on the bottom surface of the main body bottom plate 26, wheel mounting frames 43 and 44 are provided along the short side of the main body so as to be adjacent to the two support devices 30A and 30D and the support devices 30C and 30F at both ends in the long side of the main body. The two movable wheels 45 are attached to the lower sides of the frames 43 and 44, respectively. The wheel mounting frames 43 and 44 are made of a groove material that is open on the upper side. The main body bottom plate 26 that overlaps one frame 43 is provided with an opening that is covered with a detachable cover plate. The rotation operation lever 39 is configured to be housed in the frame 43 from the interior of the furniture 25.

  According to the above configuration, the rotation operation lever 39 is set on the operation shaft 38 of the rotation operation means 33, and the operation shaft 38 is rotated, whereby the angular shafts 31 and 32 on both sides can be driven to rotate. . The horizontal screw shafts 2 of the respective support devices 30A to 30F are rotationally driven in the same direction by the rotation of the both corner shafts 31 and 32, and the lower mounting member 4 is synchronized with the upper mounting member 1 as described above. It can be moved up or down. As a result, the trolley movable frame 28 at the bottom of the furniture 25 moves up and down while maintaining a parallel posture with respect to the trolley fixed frame 27, but the lower mounting member 4 reaches the level L shown in FIGS. 1 and 2. 5 descends with respect to the upper mounting member 1, as shown in the left half of FIG. 5 and FIG. 6, the bottom surface of the movable movable frame 28 becomes relatively lower than the common landing level of the movable wheels 45 for movement. Then, the bottom surface of the movable carriage frame 28 is landed. Further, when the lower mounting member 4 rises with respect to the upper mounting member 1 to the level H shown in FIGS. 1 and 2, as shown in the right half of FIG. It becomes relatively higher than the common landing level of the universal wheels 45, and the movable universal wheel 45 will land. As described above, the support devices 30A to 30F are configured to be able to switch the carriage movable frame 28 between the upper position and the lower position relative to the common landing level of the movable wheel 45 for movement. It is.

  Therefore, when the furniture 25 is moved, the pedestal movable frame 28 is actually raised by moving the pedestal movable frame 28 relative to the pedestal fixed frame 27 by the support devices 30A to 30F. After the furniture 25 is lowered with respect to 28 and the movable wheel 45 is landed, the carriage movable frame 28 is further raised with respect to the carriage fixed frame 27 to the upper limit. In this state, if the furniture 25 is moved using the movable wheels 45 and the furniture 25 is positioned at a predetermined position, the trolley movable frame 28 is again mounted on the trolley fixing frame 27 by the support devices 30A to 30F. After the trolley movable frame 28 is landed, the furniture 25 is raised with respect to the trolley movable frame 28, and the movable wheel 45 is lifted from the floor surface. The furniture 25 can be stably placed on the floor using the movable carriage frame 28.

It is a vertical side view which shows a support apparatus. It is a vertical front view which shows a support apparatus. It is a top view which shows a support apparatus. It is a top view which shows the pedestal part of the furniture which attached the support apparatus. It is a vertical front view which shows the trolley part of the furniture, Comprising: The left half shows the state in which furniture is supported by the trolley, and the right half shows the state in which furniture is supported by the movable wheel. FIG. 5 is a longitudinal left side view of FIG. 4. It is a longitudinal cross-sectional view of the principal part which shows an operation means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper attachment member 2 Horizontal screw shaft 3 Female screw body 4 Lower attachment member 5 Link mechanism 7a, 7b Bearing member 11 Screw shaft part 12 Square hole (hexagonal hole)
19 1st link 20 2nd link 25 Furniture 26 Furniture main body bottom plate 27 Standing wheel fixed frame 28 Standing wheel movable frame 29 Standing wheel 30A-30F Support apparatus 31, 32 Square axis (hexagonal axis)
33 Rotation operation means 35 Relay shaft 38 Operation shaft 39 Rotation operation lever 45 Free wheel for movement

Claims (2)

An upper mounting member that is attached to the bottom of a supported main body that is supported so as to be able to move up and down with respect to the supporting floor, a horizontal screw shaft that is supported on the upper mounting member so that both ends thereof can only rotate, and formed on the horizontal screw shaft A female screw body screwed into the screw shaft portion, and a link mechanism for converting a horizontal reciprocating movement of the female screw body into a vertical lifting movement of a supported body with respect to the support landing body, and the horizontal screw shaft The link mechanism is supported by a lower attachment member attached to a support landing body and the female screw body with both ends being supported by horizontal support shafts. Support for furniture, etc., comprising a first link and a second link whose both ends are pivotally supported by a horizontal support shaft and inclined symmetrically with respect to the first link. In the apparatus, the lower mounting member bends the plate material. It is constructed by machining, and the lower end of the first link is fitted and the upper open groove shape part that is pivotally supported by the horizontal support shaft, and the vertical extending upward from one side plate part of this groove shape part A plate portion and a horizontal plate portion that is horizontally bent from the vertical plate portion to the opposite side of the groove portion, and the lower mounting member is supported by the bottom surface of the groove portion. The floor is flush with the bottom surface of the movable movable frame at the bottom of the furniture, and the vertical plate is in contact with the inner surface of the movable movable frame, and the horizontal plate is above the movable movable frame. A support device such as furniture, which is attached to the movable movable frame frame while being in contact with the end face . The first link is composed of a groove-shaped member that is open on the second link side, and the upper ends of both side plate portions of the first link are pivotally supported by a horizontal support shaft with the lower part of the female screw body sandwiched from the left and right, The upper end of the two links is pivotally supported by the horizontal support shaft in a state of loosely fitting between both side mounting plate portions bent from the bearing plate portion supporting the end portion on the second link side of the horizontal screw shaft, The lower end of the second link is a support device for furniture or the like according to claim 1 , wherein the lower end of the second link is pivotally supported by a horizontal support shaft in a state of loosely fitting between both side plate portions of the first link .