JP2018198913A - Chair for standing - Google Patents

Abstract

To provide a chair for standing which has a function for vertical correction of a brace even at a floor which is inclined for reducing fatigue and improving a work environment of a worker who is required to perform a constant operation and work at a standing posture and perform a work which is established by standing for a long term, and has a function for completely correct and adjust change of a centroid balance in a cross direction.SOLUTION: The chair for standing comprises on a cylindrical brace comprising means which is slidably extended and shrunk and fits in a vertical shaft direction, a leg part which has a function for changing an angle of the brace and correcting a vertical state of the brace even on a floor having an inclined angle, and an upper end of the chair for standing has a seat part which has a function for correcting and adjusting change of balance of a cross centroid shaft generated due to inclination of a floor face, and a function for avoiding overturn accident to a rearward is also provided on the chair for standing. When a user uses the chair for standing, the user straddles on the chair, the user adjusts a length of an inseam, performs correction to a change state of a horizontal state of a floor face, and a centroid shaft in a cross direction of the seat part is adjusted. The chair for standing can reduce fatigue for a long time, and allows a user to smoothly perform work and purpose.SELECTED DRAWING: Figure 5

Description

  The present invention comprises means for arbitrarily correcting and fixing the vertical state of a column even on a seat with a complete front and rear center-of-gravity position adjustment function used in a standing posture, a horizontal floor, and a floor with a slope. It is related to a standing chair for the purpose of supporting time standing work and performing comfortably.

  Conventionally, for business use mainly of standing work for a long time, there is no option for off-the-shelf chairs other than sitting chairs, eliminating the burden on the waist with a posture that maintains an upright posture, reducing fatigue However, there is no chair that can establish, adjust and operate the front and rear balance control in the straddled state.

JP 7-241226 A

This has the following drawbacks.
As shown in Fig. 1, when a photographer uses a camera holding tool such as a tripod (2) to perform work in an upright position for a long time, an excessive burden is placed on the waist over time. Elimination and fatigue reduction were issues. In particular, workers who are engaged in video shooting are required to have a stable composition and smooth camera work. In order to make their body follow up, down, left, and right as the camera (1) moves, The burden on the waist was serious because the work was carried out with almost no change in the ground contact position of the floor. As shown in FIG. 2, in the conventional product (4), although a chair with a high seat height based on the concept of sitting on a seat was present, the sitting posture itself was ergonomically forced to bend the waist. This creates a distance between the upper body and the tripod tools. This distance hinders a task that requires precise and accurate for engineers. As shown in FIG. 3, the use (5) of the present invention does not impair an exquisite center-of-gravity balance that can be achieved only by standing upright, and is also in the upright posture (6) and the use of the present invention (7). There weren't many chairs that changed their height. Furthermore, as shown in FIG. 4, the leg (8) of the present invention (5) is a distance between the left and right foot widths in a natural standing posture (9) (as shown in FIG. 4). It is a compact design that fits within the range of about 25-30 cm (about 20 cm). For example, when maintaining the shooting posture in an environment where the spreader (3) of the tripod (2) exists, the foot position is narrow and cramped Even in this case, the leg width (8) of the small design does not get in the way. In the case of a general chair, the leg area is large and heavy. By doing so, stability as a chair is established, but as a standing chair, the leg part becomes an obstacle. Small design is also an important factor in carrying.
The present invention has been made to eliminate the above drawbacks.

In order to achieve the above-mentioned object, the present invention is provided with a seat portion corresponding to the center of gravity fulcrum shaft variable at the upper end in the longitudinal direction, and a column portion having a height adjusting function protruding at the lower portion, and at the lower end in the longitudinal direction. Provides a standing chair provided with support legs that are capable of varying the horizontal inclination.

The seat portion (11) is screwed to the seat mounting column (13) by the saddle clamp (12), and the counterbalance base (15) is formed in a recessed shape in the groove formed on the top surface portion. The counter balance plate (14) is supported in such a manner that it can move horizontally back and forth, thereby providing a stepless center of gravity position adjustment function. The front and rear center of gravity balance fulcrum shaft (32) is arbitrarily determined. A counter balance fixing knob (16) is provided as a stopper that can be releasably fixed after determining the optimum center of gravity position by providing a scale (33) and an index (34) so that the user can visually grasp the accurate front and rear position. ) And a level (17) that can distinguish and confirm the front and rear horizontal state is attached.

An outer support column (10) projects from the center of the bottom surface of the counterbalance base (15) and includes an adjustment button (18) and an adjustment hole (19). The outer strut (10) and the middle strut (21) are slidably fitted to each other in the longitudinal axis direction, and have a cylindrical slide-like connection structure provided with a means for fixing at an arbitrary length. A set screw (20) is provided.

The middle strut (21) protrudes from a dome-shaped hemisphere (44) formed inside the front / rear tilt adjustment base (22) of the hollow frame, and can be rotated back and forth along the front / rear movable frame (46). It is supported. The front / rear tilt fixing handle (27) as a stopper for releasably fixing is screwed with a fixing nut (42) formed inside the front / rear tilt fixing groove (45) cut out in the vertical axis direction. And a means for fixing at an arbitrary inclination angle. The front / rear tilt adjustment base (22) is mounted on the support base (23), and a dome-shaped lid (24) is provided on the bottom surface thereof. A leg portion (25) is disposed from four corners of the bottom surface of the support base (23), and a leg tip rubber (26) is disposed at the tip thereof. From the center position of both legs (25) on the rear side, a rear fall prevention auxiliary leg (28) is provided on the rear side. A non-slip rubber (29) is formed on the floor grounding portion of the rear fall-preventing auxiliary leg (28).
The present invention is a standing chair configured as described above.

First, sit on a chair. That is, sitting is roughly divided into an object for a purpose of resting and a purpose of maintaining an appropriate tension and not concentrating in order to perform business and purpose. In the case of the chair of the above-mentioned type for the purpose of rest, a comfortable sofa with cushions is relaxing and sleepy. Also, if the chair is of a type close to business use, which will be described later, a typical example is an automobile chair, and if it is not a chair with an element that can maintain a certain level of tension, it will cause an accident. From the above, I think that the element that can maintain concentration when it is used for business is an indispensable theme. The present invention maintains the posture that is the same as the standing posture by maintaining a certain tension and concentration, and the greatest problem is the effect of reducing fatigue with respect to long-time labor and purpose execution.
The principle is irresponsible. The term “counterbalance” is used, and will be explained. In the first place, counterbalance means balancing by offsetting or compensating for shortages. Standing chair of the present invention is to adjust the counter balance of the seat by itself, to secure the center of gravity desired by the user himself, straddle in a posture that maintains an upright posture, and keep the balance in front and back, The center of gravity balance is established with both legs of the present invention and the present invention. Even on horizontal and sloped floors, it has means to correct and fix the vertical status of the columns, and it can be adjusted until you are satisfied with perfect center of gravity control correction. In order to incorporate the elements that can maintain the above-mentioned tension and concentration as the shape of the legs, the chair uses small legs with unstable elements. By straddling the legs of this unstable element, the user controls the sense of balance, and the concept of counterbalance adjustment as a standing chair is established. These small legs do not occupy the feet of important users as standing chairs. For adults working in an upright position, it is desirable that the distance between the left and right foot widths of both legs is about 25 cm to 30 cm is ergonomically suitable and stable. The leg also features a shape and size that do not interfere with the upright posture, ensuring an ideal distance between legs.
A chair with a general design is a mechanism in which large and heavy legs forcibly absorb the weight generated by sitting, and the occupancy rate of the feet is high, so it is not suitable as a standing chair.
As an effect of the present invention, there is an effect of suppressing fatigue by significantly reducing the heavy burden on the waist coming from the original standing work. However, unlike a chair that sits on the seat, it is not intended for rest. As an ergonomic element, there was a concern that the posture of taking a weight and straddling might be inadvertently out of balance and fall backward. The problem is solved by the safety of the rear fall prevention auxiliary leg (28) and the non-slip rubber (29) in consideration of safety.
The assumed load-bearing capacity is different from the chair of the type that sits with the total weight, but because of the structure that uses its own legs and the legs of the present invention as three fulcrums, The load resistance of about 1/3 to 1/2 is the applicable range.
In addition, when using the present invention, since there is little change in height from when standing upright, it can be used without any sense of incongruity in general operations that require maintaining a standing posture, so it is not limited to photographers. It is thought that it can contribute widely to social contribution. When operating at various sites, it is possible to instantly leave and walk even when sudden rising and walking are required from the present invention. In addition, a crotch height adjustment function is provided, and the length of the user's crotch is not specified. Compact and lightweight, so it has excellent portability.

  Video shooting when using a tripod with the normal standing posture when the present invention is not used.   Video recording when using a tripod when using a high-sitting chair.   Video shooting when using a tripod while maintaining a standing posture when using the present invention.   It is leg position explanatory drawing from the front lower end part use at the time of this invention use.   It is a left surface perspective view at the time of the minimum full length of the present invention.   It is a left surface perspective view at the time of the maximum full length of the present invention.   It is upper end part explanatory drawing from the front upper direction of this invention.   It is a seat part from the upper end part left surface perspective view of the present invention, and a centroid movement conceptual diagram in the front side.   It is a seat part from the upper end left surface perspective view of the present invention, and a centroid movement conceptual diagram in the center side.   It is a gravity center movement conceptual diagram by the seat part from the upper surface left part perspective view of this invention, and a back side.   It is upper end part explanatory drawing from the upper surface left part perspective view of this invention.   It is an enlarged view of FIG. 11 of this invention.   It is an upper half part from the left perspective view of the present invention, and is a separation figure.   FIG. 16 is an enlarged comparison diagram of FIGS. 13 and 15 of the present invention.   It is a lower half part from the left perspective view of the present invention, and is a separation figure.   It is explanatory drawing of the components loaded in the code | symbol 38 of this invention.   It is sectional drawing from the lower end part left side surface of this invention.   It is explanatory drawing from the lower surface left surface overhead view of this invention.   It is a comparison figure in the leg horizontal state from the left side perspective view of the present invention.   It is a contrast figure at the time of the leg part front inclination from the left surface perspective view of this invention.   It is a contrast figure at the time of the leg part back inclination from the left side strabismus of the present invention.   It is explanatory drawing from the lower end part left side upper direction of this invention.   It is a separation figure from the lower end part left side upper part of the present invention.   It is sectional drawing at the time of the front inclination from the lower end part left side surface of this invention.   It is a rear view from the lower end part upper part of this invention.   It is a front view at the time of use of this invention.   It is a back perspective view from the left side perspective rear view at the time of use of the present invention.   It is a front contrast figure compared with the time of unused of this invention.

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

As shown in FIGS. 5 and 6, the present invention has a function of adjusting the length of the user's inseam, and FIG. 5 shows the distance from the landing part to the apex of the seat part, at the minimum total length (about 63 cm). It is a left surface perspective view in. FIG. 6 is a left perspective view at the maximum full length (about 86 cm).

As shown in FIGS. 5 and 6, the standing chair of the present embodiment includes a counter balance base (15), an upper layer portion including a seat portion (11) coupled upward from the counter balance plate (14), and an outer support column. (10) Middle layer part including middle strut (21), front / rear tilt adjustment base (22), leg part (25) provided on landing part from support base (23), leg tip rubber (26), prevention of backward tipping It is comprised from the lower layer part containing an auxiliary leg (28) and anti-slip rubber | gum (29).

As shown in FIG. 7, the structure of the upper layer portion is configured such that the seat portion (11) is screwed with the saddle clamp (12) to the seat portion mounting column (13) with the bolts and nuts of the fixing bracket. The seat mounting column (13) and the counterbalance plate (14) are joined together in an integral structure.
The counter balance plate (14) and the counter balance base (15) are formed as a pair and can be inserted and removed. This takes into account compactness when carrying. The material is preferably made of metal die cast from the viewpoint of strength.

As shown in FIG. 7, the counterbalance base (15) has a recessed shape. In the counterbalance base (15), the distance (30) on the inner side of the bottom surface corresponding to the counter balance plate (14) mounting contact portion (30) is longer than the distance (31) on the inner side of the top surface with respect to the horizontal axis in the horizontal movement direction. By doing so, the structure prevents the dropout and moves horizontally back and forth. As shown in FIGS. 8, 9, and 10, the counterbalance plate (14) formed with a structure suitable for the shape can be horizontally moved in the groove formed on the top surface of the counterbalance base (15). It has a stepless center of gravity position adjustment function. Thereby, the fulcrum position of a seat part is adjusted arbitrarily and the front-rear center-of-gravity balance fulcrum axis | shaft (32) is determined. This is for correcting the front / rear center-of-gravity balance fulcrum shaft (32) according to a change in the horizontal inclination of the floor, which will be described later, and for changing and adjusting the user arbitrarily.

As shown in FIG. 11 and FIG. 12 (enlarged view), a scale (33) and an index (34) are provided so that the user can visually grasp the change in the front and rear position accurately.

As shown in FIGS. 8, 9, and 10, after determining the optimum center-of-gravity balance fulcrum shaft (32), a stopper that can be releasably fixed with the counter balance fixing knob (16) of FIG. 7 is provided. Yes. Structurally, by screwing a screw-in knob, the left side surface of the counter balance plate (14) and the thread tip are screwed and fixed.

A level (17) that can distinguish and confirm the horizontal state of the counter balance plate (14) of FIG. 12 is attached. This is a component of the upper layer part.

As shown in FIG. 5, the structure of the middle layer part has an outer support column (10) projecting in the vertical axis direction around the center of the bottom surface of the counterbalance base (15). The material is preferably lightweight aluminum metal according to strength. As a middle shaft cylinder of the outer support column (10) of FIG. 13, there is an intermediate support column (21) of FIG.

The outer strut (10) is fitted inside the tubular structure so that the inner cylinder of the middle strut (21) is slidable in the vertical axis direction. In FIG. 14, as a means for fixing and fixing the height of the chair, an adjustment hole (19) is formed in the outer support column (10). The hole is about 9 mm in diameter, and a number of about 10 is desirable. As a measure to prevent the outer strut (10) from pulling out when it is fully extended, a hole (38) of about 9 mm that penetrates the cylinder at a distance from the upper end of the middle strut (21) is drilled. doing.
The hole (38) is effective as a stopper by sandwiching an elastic body having a cylindrical button shape of about 8 mm having an outward repulsive action in FIG. An adjustment button (18) that uses the repulsive force that spreads out is sandwiched. Height adjustment is realized by the peak of the adjustment button (18) popping out of the hole (38) by the repulsive force of the elastic body. The hole (38) has a penetrating structure. The front hole is for the operation of the adjustment button (18), and the hole on the back side is that the adjustment button (18) falls inside the cylinder by the action force of the elastic body. It is preventing. Thus, a means for adjusting an arbitrary length is provided.

FIG. 14 is a comparison diagram before and after connecting parts. A stopper for releasably fixing the middle strut (21) is provided at the lower end in the longitudinal direction of the outer strut (10) by screwing a rotation stop screw (20). Structurally, a male thread groove (35) is carved at the lower end in the longitudinal direction of the outer support column (10). A female screw (36) is engraved inside the upper end of the rotation stop screw (20). A fixing means is provided by screwing with the end point of the inner diameter of the set screw tip (37) having a narrow structure inside the end point in the rotation direction. Accordingly, as shown in FIGS. 5 and 6, the height of the seat can be variably adjusted within the range of, for example, about 63 cm to about 86 cm from the floor ground contact surface. This requires a data survey of the distance from the crotch to the landing of the subject subject to be modeled, and it is desirable to determine from there. Even now, it covers the general body types from adult women to men. This is a component of the middle layer.

The components of the lower layer will be described. FIG. 17 is a cross-sectional view of the front / rear tilt adjustment base 22 as viewed from the left side. As shown in the figure, the parts shown in bold lines are combined and integrated. The middle strut (21) is screwed into the dome-shaped hemisphere (44) formed inside the longitudinal tilt adjustment base (22) of the hollow frame with the core tube bolt screw (40) and the fixing nut (41). Thus, the middle strut (21) and the dome-shaped hemisphere (44) are coupled. By providing the hollow frame's front / rear tilt adjustment base (22) so as to be sandwiched, it can be rotated back and forth along the front / rear movable frame (46) as shown in FIG. 18 (overhead view from the left side). It is supported by. The rotation range of the central axis movable region (39) is, for example, a normal variable range of 20 ° in the forward direction to 20 ° in the rear direction is normally corrected when the vertical state of the middle strut (21) is 0 °. It seems desirable to use.

As shown in FIG. 18, the fixing method of the middle strut (21) supported so as to be adjustable in the front-rear angle is shown by a front / rear tilt fixing handle (27) as a stopper for fixing in a clockwise screwing structure. The dome-shaped hemispherical body (44) and the front / rear tilt adjustment base (22) are fixed by screwing. In the structure, the front and rear inclined fixing grooves (45) of FIG. 18 are cut out in the vertical axis direction from the surface of the dome-shaped hemisphere (44). A robust material fixing nut (42) formed in the depth of the groove in FIG. 17 is built in, and a bolt screw (43) protruding from the front / rear tilt fixing handle (27) is screwed clockwise. And a means for screwing the front and rear tilt adjusting base (22) and releasably fixing at an arbitrary angle.

As shown in FIG. 19 (when the floor is horizontal), FIG. 20 (when the floor is tilted), and FIG. 21 (when the floor is tilted), these are the floors that are artificially designed in a gradient, such as a theater, It is proportional to the use of the leg portion provided with means for correcting the angle and fixing it vertically without being affected by the inclination of the floor surface.
When the horizontal floor surface of FIG. 19 (when the floor is horizontal) is used as a reference, and in the case of the floor surface inclined forward of FIG. 20 (when the floor is tilted), the front / rear center-of-gravity balance fulcrum shaft (32) is 11) needs to be moved to the rear side, and in the case of a floor surface inclined rearward in FIG. 21 (when tilting behind the floor), the front / rear center of gravity balance fulcrum shaft (32) moves the seat (11) to the front side. It is necessary to let There are individual differences among users. Since the holding force of the body also varies depending on the difference in the fixing angle of the saddle clamp (12) when the seat (11) in FIG. 7 is fixed to the support for mounting the seat (13), the numerical value to be moved Needs to be handled individually.
FIG. 19 (when the floor is horizontal), FIG. 20 (when the floor is tilted), and FIG. 21 (when the floor is tilted) are three examples, but the movable region is stepless. Due to the action of the components with the front / rear tilt adjustment base (22) serving as the base of the leg as the core, it is possible to rotate back and forth within the center axis movable region (39) and to be securely fixed. A front and rear tilt fixing handle (27) is provided as a stopper.

As shown in FIG. 22, the front / rear inclination adjustment base (22) is mounted on the support base (23), and a dome-shaped lid (24) is provided on the bottom surface thereof. As shown in FIG. 23 (separation drawing for explanation), a circular hole structure (47) having a diameter of about 5 cm, for example, is provided in the center of the support base (23), so that the dome-shaped hemisphere (44 ) Can prevent the dome-shaped hemispherical bottom surface protrusion angle (48) from contacting the support base (23) during tilt adjustment.

As shown in FIG. 25 (rear view), legs (25) are arranged on the front left and right and rear left and right from the four corners of the bottom surface of the support base (23). At the tip, a leg tip rubber (26) is disposed as an anti-slip measure. The leg part (25) is characterized in that the front-rear distance to the rear landing part is longer than the front-rear distance to the front landing part on the basis of the part supporting the middle strut (21). This establishes a front-rear balance, and serves as a deterrent against unexpected load balance collapse during use. There is no eye behind as an ergonomic element. Since there is no way to predict or avoid danger, consideration for accident prevention is important.

As shown in FIG. 25, in consideration of safety, as a measure for preventing the rearward fall, the rear side of the rear legs (25) from the center position of the rear legs (25) with respect to the portion supporting the middle strut (21) A fall prevention auxiliary leg (28) is provided. Structurally, it is characterized by a T-shaped structure that provides a repulsive force against the rear floor surface. An anti-slip rubber (29) is provided at the tip. The landing height is comparable to that of the leg rubber (26).
For example, as long as the same effect can be obtained as the leg for preventing the vehicle from falling backward, leg portions having independent structures extending right and left at both ends of the T-shaped structure may be established as a deterrent.
This is the structure of the lower layer.

FIG. 26 (front view during use) is a front view during operation. As shown in FIG. 27 (back perspective view when in use), the danger of preventing rearward fall is the accident that falls over the standing chair unexpectedly and collapses backward if the load is kept while maintaining the balance of balance. The purpose is to avoid. This is illustrated in the figure.

Explain how to adjust usage.
(I). This is an element composed of the lower layer, and it determines the vertical state of the pillars for the horizontal floor and the floor with a gradient, and corrects them as necessary.
(B). Visually check the level (17) provided in the upper layer.
(C). When correcting the vertical state of the support column, while confirming the level of the level (17), release the fixing of the front / rear tilt adjustment handle (27), and correct the vertical state of the support column. Secure with the front / rear tilt adjustment handle (27).
(D). The counter balance plate (14) provided in the upper layer portion is moved back and forth with an error of the front and rear center of gravity balance fulcrum shaft (32) caused by the gradient of the floor surface.
(E). Stepping over the provisional provisional chair, adjusting the inseam height and correcting the error of the front / rear center of gravity balance fulcrum shaft (32), repeating (d) and subsequent steps, and visually scaling (33) The front and rear center-of-gravity balance fulcrum shaft (32) accompanying the change in the numerical value of the index (34) is experienced, and the adjustment is completed when the intended front and rear balance fulcrum can be acquired. Thereby, it has a complete balance adjustment function that anyone can obtain satisfaction.

As shown in FIG. 28, the same person height difference (52) is about 4 cm in comparison with the left figure, the upright posture when not in use (49), the right figure, the upright posture when using the present invention (50), The use of the standing chair (51) naturally supports and supports the standing posture even in all the operations that are required to maintain an upright posture, and does not hinder the operation.
The present invention is a standing chair configured as described above.

1 Video camera 2 Tripod 3 Tripod spreader (frame structure that spreads to stabilize)
4 General chair with high seating 5 Standing chair 6 Height when shooting in an upright position 7 Difference in height between standing posture when using a standing chair 8 Distance between left and right legs when using a standing chair ( About 20cm)
9 When using a standing chair, the distance between the user's standard left and right foot widths (approximately 25-30 cm)
DESCRIPTION OF SYMBOLS 10 Outer support | pillar 11 Seat part 12 Saddle clamp 13 Seat support support | pillar 14 Counter balance plate 15 Counter balance base 16 Counter balance fixing knob 17 Level 18 Adjustment button 19 Adjustment hole 20 Anti-rotation screw 21 Middle support pillar 22 Front and rear tilt adjustment base 23 Support base 24 Dome-type lid 25 Leg 26 Leg tip rubber 27 Front / rear tilt fixing handle 28 Back fall prevention auxiliary leg 29 Anti-slip rubber 30 Distance inside the bottom left and right 31 Distance left and right inside the top surface 32 Center of gravity balance fulcrum shaft 33 Scale 34 Index 35 Male thread groove 36 Female thread groove 37 Set screw tip 38 hole 39 Center axis movable area 40 Core tube bolt screw 41 Fixing nut 42 Fixing nut 43 Fixing bolt screw 44 Dome-shaped hemisphere 45 Groove 46 Front and rear movable frame 47 Circular hole structure 8 domed hemisphere bottom projecting angle 49 is not used upright 50 present invention used when upright 51 standing chair 52 same person height difference (about 4 cm)

Claims (4)

  A standing chair to be used in a standing posture, comprising a leg portion, a support column erected on the leg portion, and a seat portion supported by an upper end portion of the support column, wherein the support column is front and rear on the leg portion. The standing chair further includes a first stopper for releasably fixing the pivot position of the support column, and the seat portion moves back and forth at the upper end portion of the support column. The standing chair further includes a second stopper for releasably fixing the front and rear positions of the seat portion.   2. The standing chair according to claim 1, wherein the leg portion has a longer front-rear distance to a rear landing portion than a front-rear distance to a front landing portion with reference to a portion supporting the support column.   The said leg part is a standing chair of Claim 1 or 2 which has a front landing part in two symmetrical places, and has a back landing part in two symmetrical places.   The leg part is a part further rearward and closer to the center than the rear landing part, and has a separate rear landing part in a bilaterally symmetrical part so as to be separated from each other or connected to each other. The standing chair according to claim 3.

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