JP3119088U - Standing work chair - Google Patents

Abstract

To provide a standing work chair that further reduces the burden on the waist by realizing a shape close to a standing posture.
In a state where an assumed user is straddling, a heel part 10 that supports the inside of the crotch and / or the inner base of the thigh, the sole of the user's foot is attached to the installation surface, and the knee is substantially omitted. Legs 20 that support the buttocks against the installation surface at a height that extends, a torso front support that supports at least a portion from the chest to the abdomen of the user, and the torso front support 40 to the buttocks Or a standing work chair is comprised from the vertical frame 30 supported so that it may fix to a leg part.
[Selection] Figure 3

Description

  The present invention relates to a standing work chair that is used while straddling in a substantially standing state.

Since the burden on the waist is less in the standing state than in the sitting state, when working, a chair that sits as close to the standing state as possible is desirable. Patent Documents 1 and 2 below disclose chairs for standing work. Many of these chairs have a saddle shape, and are set to a height at which the user's soles can be seated on the floor and can be sat with the knees extended.
Further, it is considered that the burden on the waist can be reduced by supporting a part of the load on the upper body by a part other than the buttocks. The following Patent Document 3 discloses a device for supporting a user's chin sitting on a chair, and the following Patent Document 4 discloses a device for supporting a user's belly sitting on a chair. Discloses a device for supporting a chest of a user sitting on a chair.
JP 2000-27972 A Japanese Utility Model Publication No. 5-76365 JP 2002-119526 A JP 2002-125803 A JP 2004-49816 A

The chairs described in Patent Documents 1 and 2 are almost in a standing state, but the upper body is supported by the buttocks, and the legs are in the front. As a result, the pelvis tilts backward, and the upper body tilts forward so that the tilt of the pelvis and spine do not match, and no straight force is applied to the pelvis, resulting in a burden on the waist. Although the devices described in Patent Documents 3, 4 and 5 above are considered to reduce the burden on the waist, the pelvis tilts forward in order to support the load on the upper body with the buttocks. The load on the back cannot be supported and the burden on the waist remains.
Therefore, an object of the present invention is to provide a standing work chair that further reduces the burden on the waist by realizing a shape close to a standing posture.

In order to solve the above problems, the present invention has the following configuration.
The invention according to claim 1 is a state in which an assumed user straddles the groin and / or the inner side of the thigh base, and the sole of the user's foot reaches the installation surface, and A leg portion that supports the buttocks with respect to the installation surface at a height at which the knee substantially extends, a torso front support portion that supports at least a part from the chest to the abdomen of the user, and the torso front support portion. It is a standing work chair having a vertical frame that is supported so as to be fixed to the buttocks or legs.
According to a second aspect of the present invention, in the standing work chair, a chin support portion for placing the chin of the user on the vertical frame is further provided.
According to a third aspect of the present invention, in the standing work chair, the torso front surface support portion includes a chest pad portion that supports the chest and a bell pad portion that supports the abdomen.
According to a fourth aspect of the present invention, in the standing work chair, the vertical frame is pivotable back and forth, and has a rotation fixing means for fixing at at least two or more rotation positions.
According to a fifth aspect of the present invention, in the standing work chair, the leg portion can be expanded and contracted in the vertical direction, and has expansion / contraction fixing means for fixing at least two or more expansion / contraction positions.

According to the first aspect of the present invention, the upper body load is supported from the crotch to the inner base of the thigh while straddling the buttocks, and the pelvis is tilted backward because the leg is directed downward with the knee substantially extended. It is possible to sit in a form that is more like a standing posture, and the burden on the waist can be reduced. Also, if the upper body load is supported from the crotch to the inside of the base of the thigh, it becomes unstable compared to the case where it is supported by the buttocks, but the front support part of the torso supports the part from the chest to the abdomen of the user By doing so, a stable posture can be maintained for a long time, and the load on the waist can be reduced.
According to the second aspect of the present invention, by supporting the user's chin, the ratio of the load on the head on the neck and waist when the head is tilted can be reduced, and it is possible to sit comfortably.
The invention according to claim 3 reduces the pressure applied to each part by supporting the abdomen by the abdomen and supporting the chest by the abdomen so that the load is distributed between the chest and the abdomen. Can do.
Since the angle of the said vertical frame can be adjusted, the angle of the upper body at the time of sitting can be changed according to the situation.
According to the fifth aspect of the present invention, the length of the leg can be adjusted, so that it is possible to cope with more users by changing the height according to the length of the leg of the user.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a perspective view of a standing work chair X according to this embodiment, and FIGS. 2, 3, 4, and 5 show a front view, a side view, a rear view, and a plan view of the standing work chair X, respectively. The standing work chair X includes a heel part 10, a leg part 20, a vertical frame 30, a torso front face support part 40, and a chin support part 50.
The buttocks 10 support the inside of the crotch and the base of the thigh with the assumed user straddling, and are long and narrow box-like bodies with both side surfaces extending along the inside of the thigh. Chamfered. The inside of the buttocks has a wooden or iron core material, and a soft cushion is attached from the upper surface to the side surface of the core material.
The leg part 20 stands on the installation surface of the work chair X with the soles of the user's feet straddling the heel part 10 and supports the heel part 10 with respect to the installation surface at a height at which the knee extends substantially. The upper pipe 21 and the lower pipe 22 are fitted so as to be stretchable and the support legs 23 are formed by five substantially horizontally extending rods that support the lower pipe 22. The inner diameter of the upper pipe 21 and the outer diameter of the lower pipe 22 are substantially the same, and a gas cylinder is built in the upper pipe 21 in the direction of pushing out the lower pipe 22, and the upper pipe 21 and the lower pipe 22 are not pulled out. Is formed. The lower pipe 22 can be fixed and released by an expansion / contraction fixing mechanism operated by a lever 21a biased downward by a spring. That is, when the lever 21a is positioned upward, the fixing is released and the upper pipe 21 can be moved along the lower pipe 22. When the lever 21a is left under the bias of the spring, the upper pipe 21 is moved by the expansion / contraction fixing mechanism. Is fixed at an arbitrary position of the lower pipe 22. In addition, casters 23 a are provided at the front end portions of the back surfaces of the rod-shaped bodies constituting the support legs 23.

  The vertical frame 30 is formed of a lower frame 31 and an upper frame 32. The lower frame 31 is formed by two pipes that are fixed to the core material inside the collar portion 10 and slightly tilted rearward and extend upward, and the upper frame 32 is a rotation mechanism at the tip of each pipe forming the lower frame 31. The pipe is formed from two pipes having the same diameter as the pipe forming the lower frame 31 extending through 33. The pivot mechanism 33 is provided with a ratchet member on the lower frame side and an engaging member having a locking claw that engages with the ratchet member on the upper frame side, and a pivot that connects the ratchet member and the engaging member. By providing a cam plate for restricting the engagement of the locking claw, the upper frame can be rotated so as to stand up from the state where the upper frame is tilted forward, and can be fixed at a plurality of rotation positions by the ratchet mechanism. The rotation of the upper frame tilts backward, and when the predetermined position is exceeded, the engagement of the engaging claw is released by the cam, and the upper frame can be tilted forward, so that the rotational position can be adjusted again. It has become. The ratchet and the locking claw constitute a rotation fixing means.

The trunk front support 40 includes a stomach pad 41 and a breast pad 42. The belly pad 41 is a thick plate-like body, the back side serving as the mounting surface has a core made of hard wood or synthetic resin material, and a soft cushion is provided on the front side facing the user. It is attached. In addition, engaging portions 41 a having holes that engage with the outer peripheral surface of the pipe forming the upper frame 32 of the vertical frame 30 in the vicinity of the upper side of the rear side are fixed to the upper frames 32. The engaging portion 41a is provided with a penetrating bolt hole, and has a pressing body 41aa made of a bolt having a grip at the rear end to be fitted thereto. Further, in the vicinity of the lower side of the back surface, a lower support body 41b made of a bar member provided with a metal fitting having a U-shaped cross section that engages with the surface of the pipe forming the upper frame 32 corresponds to each upper frame 32. Is provided. By loosening the pressing body 41aa of the engaging portion 41a, the belly pad portion 41 can move along the upper frame 32. By tightening the pressing body 41aa, the belly pad portion 41 can be fixed to the upper frame 32. . The breast pad portion 42 is a plate-like body having a thickness formed integrally with a chin support portion 50 to be described later, and the back side has a core material formed of hard wood or synthetic resin material, and is a side facing the user. A soft cushion is attached to the front side.
The chin support part 50 is a thick plate-like body, the lower surface side serving as an attachment surface has a core material formed of hard wood or a synthetic resin material, and a soft cushion is attached to the upper surface side. And the hole which fits to the front-end | tip of the upper frame 32 is each provided in the front side of the back side, and the upper frame is fitting in this hole. Further, as described above, the breast pad portion 42 is integrally formed at the rear edge portion located on the user side of the chin support portion 50 so as to hang down.

  Next, a method of using the standing chair having the above configuration will be briefly described. The user straddles the heel part 10, lifts the lever 21a of the leg part 20 to release the telescopic fixing mechanism, and the sole comes to the installation surface with the upper body load applied from the crotch to the inside of the thigh base, The height of the knee is extended, the lever 21 is released, and the position of the buttocks 10 is fixed by the expansion / contraction fixing mechanism. Next, the upper frame 32 constituting the vertical frame 30 is pulled forward to release the engagement between the ratchet and the claw portion in the rotation mechanism 33 and then tilted forward, and then the upper frame 32 is rotated forward. Then, the pivot position of the upper frame 32 is adjusted and fixed by the ratchet mechanism. Furthermore, the pressing body 41aa of the engaging part 41a of the belly pad part 41 is loosened to adjust the height of the belly pad part 41, and then the pressing body 41aa is tightened to fix the belly pad part 41. In addition, if the user is the same, the adjustment of the height of the collar part 10, the rotation angle of the upper frame 32, and the height of the belly pad part 41 is sufficient. Thereafter, the user puts weight on the buttocks 10 inside the crotch and the base of the thigh, makes the abdomen abut the abdomen 41, abuts the chest on the chest abutment 42, and further supports the chin support part 50. Put your chin on. By sitting in this way, it will be almost standing, the pelvis has a slight forward tilt from the vertical, and the direction of the spine connected to this is almost the same as the tilt of the pelvis, so it sits for a long time However, the burden on the waist can be reduced as compared with the case where the user sits on the buttocks.

It is a perspective view of the standing work chair concerning an embodiment. It is a front view of the standing work chair concerning an embodiment. It is a side view of the standing work chair concerning an embodiment. It is a rear view of the standing work chair which concerns on embodiment. It is a top view of the standing work chair concerning an embodiment.

Explanation of symbols

X Standing work chair 10 Buttocks 20 Leg 30 Vertical frame 33 Rotating mechanism 40 Torso front support 41 Abdomen support 42 Chest support 50 Jaw support

Claims (5)

A hip that supports the inside of the crotch and / or the base of the thigh with the assumed user straddled;
Legs that support the buttocks against the installation surface at a height at which the soles of the user's feet reach the installation surface and the knees extend substantially;
A torso front support that supports at least a portion of the user's chest to belly;
A vertical frame that supports the trunk front support so as to be fixed to the flange or leg;
Having a standing work chair.   The standing work chair according to claim 1, further comprising a chin support portion on which the user's chin is placed on the vertical frame.   The standing work chair according to claim 1 or 2, wherein the trunk front support portion includes a breast pad portion that supports a chest and a bell pad portion that supports an abdomen.   The standing work chair according to any one of claims 1 to 3, wherein the vertical frame is rotatable back and forth, and has a rotation fixing means for fixing at at least two rotation positions.   The standing work chair according to any one of claims 1 to 4, wherein the leg portion is extendable in a vertical direction, and has an expansion and contraction fixing means for fixing at at least two or more expansion and contraction positions.

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