JPH0686574U - Drafting table - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the possibility that the rotating rod may bend due to the weight applied to the support base. [Structure] A rotary rod 19 extending forward and backward is rotatably pivotally fixed to a base 1 on which a rear portion of a support 5 for supporting a drawing board 11 is tiltably pivoted, and a screw shaft provided on the rotary rod 19. Part 19
At the right and left positions of the moving piece 21 which is screwed orthogonally to a, the other end of the support rod 26, one end of which is pivotally fixed to the support base 5, and the traveling rollers 23, 23 are provided. In addition, a support frame 16 for supporting the traveling rollers 23, 23 in a rollable manner is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present application relates to a drafting table including an angle adjusting mechanism that holds a drafting plate at an arbitrary inclination angle.

[0002]

[Prior art]

 Conventionally, a drafting table equipped with an angle adjusting mechanism for holding a drafting plate at an arbitrary inclination angle has a rear part of a support base for supporting the drafting plate pivotally attached to a rear part of a horizontal base so as to be tiltable. Vertically pivotally and pivotally locks the rotary rod that connects the screw shaft coaxially, and vertically pivots one end of the movable piece that is screwed to the screw shaft of the rotary rod. The other end of the stopped support rod is pivotally fixed to the support base so as to be vertically rotatable, and the movable rod is moved forward and backward by a rotating operation of a handle member detachably attached to the rear end of the rotary rod. There is known a structure in which a supporting rod is moved up and down to move a drafting plate supported on a support stand to adjust the drafting plate to an arbitrary angle.

[0003]

[Problems to be solved by the device]

 However, according to the above-described conventional configuration, the other end of the support rod that supports the support base together with the drawing board is pivotally fixed to the moving piece that is screwed into the screw shaft of the rotary rod. The entire weight acts locally on the screw shaft of the rotating rod via the support rod and the moving piece, which damages the screw threads or causes some bending of the rotating rod, which hinders its rotation. There was an inconvenience such as causing

[0004]

[Means for Solving the Problems]

 Therefore, in order to eliminate the above-mentioned inconvenience, the present application rotatably pivots a pivoting rod extending in the front-rear direction to a base on which a rear part of a supporting base for supporting a drawing board is tiltably pivoted, and the rotary rod is rotated. A movable piece that is screwed orthogonally to the screw shaft portion provided on the first end of the support rod, the other end of which is pivotally attached to the support base in a vertically rotatable manner. In a drafting stand configured to rotate the rotating rod by rotating the handle member to move the moving piece back and forth, the support base is adjusted to an arbitrary angle. In addition to the above, the base is provided with a support frame that supports the traveling rollers so that they can roll, and it is preferable that the base is a front frame rod and a rear frame rod at the front inside and the rear inside of the left and right frame rods. Are connected to each other with a flat surface with an open upper surface between the central portions of the front and rear frame rods. Bridged the tubular supporting frame, the supporting frame, are those formed by interposing a rotating rod rotatably.

[0005]

[Action]

 Then, when the rotating rod is rotated by the handle member, the moving piece screwed to the screw shaft portion moves in the front-rear direction, and the traveling roller rolls on the bottom plate of the support frame and the supporting rod of the supporting rod moves in accordance with the movement. The lower end also moves back and forth to tilt the support base in the upright or tilted direction, and when the support base reaches the required angle, the turning operation of the handle member is stopped to maintain that angle.

[0006]

【Example】

 Hereinafter, referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 shows a general side surface of a drafting table of the present application, and a horizontal base 1 mounted on a desk plate such as a desk or a dedicated stand is The front insides of the left and right frame rods 3a, 3b having the leg pieces 2 abutting against the upper surface of the table in the front and rear positions of the bottom are connected by the front frame rod 4a, and the insides of the rear portions are connected by the rear frame rod 4b. It has a rectangular shape.

The support base 5 which is attached to the base 1 so as to be capable of tilting upward from a horizontal state has the left and right frame rods 6a and 6b substantially equal to the lengths of the left and right frame rods 3a and 3a. The front frame rod 7a and the insides of the rear portions thereof are connected to each other by a rear frame rod 7b to form a rectangular shape, and the left and right end portions of the left and right frame portions extend laterally on the upper surface of the rear frame rod 7b. A pen tray 8 having a U-shaped vertical cross-section protruding laterally of the rods 6a and 6b is fixedly attached, and the front edge rising portion 9 of the pen tray 8 and the left and right frame rods 6a and 6b are mounted on the upper surface of the support base 5. The drawing board 11 is placed so as to be held between the drawing board 11 and the receiving piece 10 provided at the front end of the drawing board.

A pair of left and right bearing plates 12a and 12b are provided on the outer surface of the rear end portions of the left and right frame rods 6a and 6b of the support base 5, and the left and right frame plates of the base 1 are attached to the bearing plates 12a and 12b. Pivots 13a, 13b projecting from the outer surfaces of the rear ends of the rods 3a, 3b are supported.

The tilt angle adjusting mechanism 14 for tilting the drafting plate 11 at an arbitrary tilt angle and holding the tilting angle is a horizontal cross section having a longitudinal section between the central portions of the front and rear frame rods 4a and 4b of the base 1. A flat rectangular tubular support frame 16 having a shape and having an upper surface opening 15 extending in the longitudinal direction is provided on the upper surface, and the support frame 16 extends in the front-rear direction and extends in the front end thereof. The rear portion is pivotally fixed to the central front plate of the front frame rod 4b, and the rear portion is rotatably penetrated through a through hole 17 formed in the central portion of the rear frame rod 4b via a bearing member 18. Then, a rotary rod 19 extending rearward is interposed. The rotary rod 19 is formed by a screw shaft portion 19a between the front and rear frame rods 4a and 4b as shown in FIGS. A portion extending from 8 to the rear portion is formed by a prismatic sliding shaft portion 19b.

A sliding pin 20 projecting from the opposite side surface is provided at the rear end of the sliding shaft portion 19b, and the screw shaft portion 19a includes a moving piece 21 of a shaft body extending in the lateral direction. As shown in FIG. 7, the right and left side surfaces of the moving piece 21 are screwed in a screw hole 22 provided in the central portion in an orthogonal manner, and on the surface of the bottom plate 16a of the support frame 16 of the base 1. A pair of left and right running rollers 23, 23 that roll on the shaft are rotatably pivotally mounted by a pivot bolt 25 via a shaft tube 24, and are attached to the shaft tube 24 protruding from the outside of the running rollers 23, 23. One end of a pair of left and right support rods 26, 26 in the form of a flat plate having a flat shape is rotatably pivoted.

Further, between the central portions of the front frame rod 7a and the rear frame rod 7b of the support base 5, there is provided a mounting frame 28 having an oblong longitudinal cross section and an opening 27 extending in the longitudinal direction on the upper surface thereof. Pivot shafts 29, 29 are fixedly installed on the outer surface of the mounting frame 28 near the rear portion of the mounting frame 28. The pair of left and right support rods 26, 26 are mounted on the pivot shafts 29, 29. The other end of each of these is pivotally fixed.

The operation member 30 for rotating the rotary rod 19 has a rectangular tubular shape, and a pair of slits 31, 31 for slidably engaging the sliding pin 20 are provided on opposite side surfaces thereof. The sliding cylinder 32 is fitted to the sliding shaft portion 19b so as to be slidable in the front-rear direction and fixed in the rotating direction, and the bearing plate is attached to the rear end of the sliding cylinder 32. A cylindrical grip 35 is rotatably fitted between one of the bearing plates 33, 33, which is bent in an L shape and extends in the horizontal direction between the bearing plates 33, 33. An operating position in which the other shaft rod 34b stands up with respect to the sliding cylinder 32, and an unused position in parallel with the sliding cylinder 32, with the tip end portion of the other shaft rod 34b of the combined handle member 36 interposed. Between the bearing plates 33, 33. A stopper pin 38 is provided parallel to the pivot stop 37.

Then, as shown in FIGS. 1 and 3, the sliding cylinder 32 is pulled out in the most front direction, and the grip 35 is gripped in a state in which the one axial rod 34 b stands upright with respect to the sliding cylinder 32. To rotate the handle member 36 vertically. Then, the rotation causes the rotary rod 19 to rotate through the engagement between the sliding pin 20 and the slit 31, and the moving piece 21 screwed to the screw shaft portion 19a moves in the front-rear direction. Along with the movement, the traveling rollers 23, 23 roll on the surface of the bottom plate 16a of the supporting frame 16, and the lower ends of the supporting rods 26, 26 also move back and forth, so that the support base 5 tilts in the upright or fallen direction. When the platform 5 reaches the required angle, the rotation operation of the handle member 36 is stopped to maintain the angle.

After adjusting the tilting angle of the support base 5 or when the drafting base is not used, the handle member 36 is first laid down sideways from the state of FIGS. Then, the sliding cylinder 20 is pushed into the sliding shaft portion 19b from the front end position of the slit 31 to the position where the sliding pin 20 contacts the front end face of the slit 31. Then, as shown in FIG. 4, the handle member 36 is housed between the left and right frame rods 3a and 3b of the base 1 and does not interfere with the drawing work.

[0015]

As described above, according to the present application, the total weight applied to the supporting base acts on the traveling roller via the supporting rod and the moving piece supporting the supporting base, and the weight thereof is the supporting frame of the base and the bottom plate. Since there is no risk of damaging the threaded portion or bending of the rotary rod, the rotary rod can be rotated and the movable piece can be moved very smoothly.

[Brief description of drawings]

[Figure 1] Side view of usage

[Fig. 2] Vertical side view in use

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a vertical cross-sectional view of a state in which the support base is laid down.

5 is an enlarged view of the main part of FIG.

FIG. 6 is a front view of a state in which the support base is laid down.

FIG. 7 is a plan view in which a part of the support base is laid down and is cut away.

FIG. 8 is an enlarged vertical cross-sectional view of the main part with the support base lying down.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 3, 4, 6, 7 Frame rod 5 Supporting base 11 Drawing board 15 Upper surface opening 16 Supporting frame 17 Through hole 18 Bearing member 19 Rotating rod 19a Screw shaft part 21 Moving piece 23 Traveling roller 26 Supporting rod 28 Mounting frame 36 Handle member

Claims (4)

[Scope of utility model registration request] 1. A rotating rod extending in the front-rear direction is rotatably pivotally fixed to a base having a rear portion of a support base for supporting a drawing board that is tiltable, and a screw shaft portion provided on the rotary rod. The other end of a support rod, one end of which is pivotally pivoted vertically to the support base, is pivotally pivoted vertically to the moving piece, which is screwed in an orthogonal manner, and the rotary rod is attached to the handle member. In a drafting table configured to adjust the support table to an arbitrary angle by rotating the moving piece back and forth by rotating the moving piece, a running roller is provided at the left and right positions of the moving piece, and the running roller is provided on the base. A drafting table, which is provided with a support frame that supports rolling. 2. A base is constructed by connecting front and rear inner sides of left and right frame rods with a front frame rod and a rear frame rod, respectively, and a rotary rod and a support frame between central portions of the front and rear frame rods. The drawing table according to claim 1 or 2, wherein the drawing table is provided. 3. The drafting table according to claim 1, wherein the support frame is formed of a flat rectangular tubular member having an opening on the upper surface, and a rotary rod is arranged in the support frame. 4. A mounting frame extending in the front-rear direction is installed in the center of the support base, and one end of each of the left and right support rods is pivotally fixed to the left and right side faces of the support frame, and the other end is moved to the left and right positions of the moving piece. 4. The drafting table according to claim 1, wherein the drafting table is pivotally fixed together with a roller.