Exercise chair
The gymnastics chair features a rotatable and foldable handrail system that allows for safe lower limb exercises and easy conversion to a daily chair, addressing the limitations of existing chairs and enhancing safety for elderly users.
Patent Information
- Application Number
- JP2023149910
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-15
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2043-09-15
AI Technical Summary
Existing gymnastics chairs are not designed for lower limb exercises and lack a modular handrail system that can be easily converted for daily use as a chair, posing safety concerns for elderly users.
A gymnastics chair with a handrail that can be rotated 270 degrees and stored vertically on the side of the chair, combined with a folding shelf support bracket that allows the handrail to be parallel to the floor during exercises and folded for daily use.
The solution enables safe and versatile lower limb exercises while allowing the chair to be used as a daily chair, addressing the need for elderly users to maintain muscle strength without the risk of falls.
Smart Images

Figure 2025042779000001_ABST
Abstract
Description
[Technical field]
[0001] This invention relates to a gymnastics chair for performing lower limb exercises. [Background technology]
[0002] Although described in Patent Application No. 60-86519 (Gymnastics Chair), this gymnastics chair is primarily for upper body exercises and not for lower limb exercises. CN-U-212730925 appears to be designed for training the lower limbs and also uses a U-shaped handrail. L-shaped handrails already exist, and many that can be folded up and stored can be seen, but there are no chairs that have been modified from parts of an everyday chair to have handrails that can be quickly removed and used when needed. Although wheelchairs that are normally used have a handle on the back, this is used for pushing the wheelchair, not for exercise. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Patent Application No. 1986-86519 [Patent Document 2] Publication CN-U-212730925 Summary of the Invention [Problem to be solved by the invention]
[0004] In recent years, the aging of the population has progressed and more elderly people are living longer, which is a cause for celebration. However, the number of elderly people who require nursing care is also increasing, and rising medical and nursing care costs are becoming a problem. As people age, the strength of their lower limbs weakens, making them unable to walk and requiring the use of wheelchairs, while the number of elderly people who are bedridden and unable to live without care is increasing. In order to live at home, it is necessary to train the muscles of the lower limbs on a daily basis. The challenge is to modify a part of a chair that is used daily so that it can be quickly taken out and used to perform lower limb exercises safely without falling. [Means for solving the problem]
[0005] The gymnastics chair (1) of the present invention is made of wood and metal, and the handrails (1-1) are equipped with a folding shelf bracket (2-2) attached to the bottom of each of the left and right handrails (1-1), and the other (2-3) is installed vertically at the top of the back of the rear leg so that the gymnastics chair can be used as a daily chair. This makes the handrails parallel to the floor when doing gymnastics, and when the exercises are finished, the shelf bracket (2-2) can be folded and stored vertically on the back of the chair, allowing it to be used as a daily chair.
[0006] The rear legs (1-2) of the chair are located at both ends of the backrest (1-4) and perpendicular to the floor. Handrails (1-1) are installed behind the tops of the left and right rear legs, parallel to each other and to the floor. This handrail (1-1) can be stored inside the chair after the exercises are completed, allowing the chair to be used as a chair on an everyday basis. In addition, a retractable step stool (5) is provided at the bottom of the chair as a step stool for getting up and down, which is considered to be the most effective form of lower limb exercise. With this arrangement, the left and right handrails, which are parallel to each other and to the floor during exercise, can be stored on the sides of the chair when exercise is completed, and the chair can be used as a normal chair.
[0007] To provide the handrails, a rotating shaft (3-1) was provided on the uppermost side of each of the left and right rear legs, and left and right handrails (1-1) with holes (3-2) at one end were attached so as to be freely rotatable. In addition, a handrail support (3-4) is provided behind the rotation axis (3-3) so that the handrail (1-1) is parallel to the floor during exercises. This allows the left and right handrails to be rotated 270 degrees after exercises are completed and stored vertically on the sides of the chair, allowing it to be used as a chair for everyday use. With this arrangement, the left and right handrails, which are parallel to each other and to the floor during exercise, can be stored on the sides of the chair when exercise is completed, and the chair can be used as a normal chair.
[0008] In order to provide the handrail (1-1) described above, two rectangular frames (4) with the handrail (1-1) on one side at the top were installed, one on each side. The left handrail frame (4-1) was attached to the back of the left rear leg (4-2) of the chair using a hinge (4-5), and the right handrail frame (4-3) was attached to the back of the right rear leg (4-4) of the chair using a hinge (4-5). This allows the left and right handrails to be folded up and stored, and when opened, it can be used for exercises, and when folded, it can be used as an everyday chair. A retractable step stool (5) that can be pulled out and put back in like a drawer is installed under the seat of the exercise chair as needed, so that it can be freely removed. With this arrangement, the left and right handrails, which are parallel to each other and to the floor during exercise, can be stored on the sides of the chair when exercise is completed, and the chair can be used as a normal chair. Effect of the Invention
[0009] Since most users are elderly people, they are wary of using ordinary chairs because they feel they are dangerous, but the present invention can be used safely by any elderly person. Currently, exercises are performed using the backrest of the chair, but the leg lift, front step, and pull-out step stool (5) cannot be climbed up and down. The gymnastics chair of the present invention allows the legs to step forward and backward without hitting the backrest, making it suitable for a wider range of exercises. [Brief description of the drawings]
[0010] [Figure 1] Rear perspective view [Diagram 2] Front View [Diagram 3] Front perspective view (handrail folded down) [Figure 4] Rear perspective view with folding shelf brackets attached [Diagram 5] Right View [Figure 6] Enlarged diagram of folding shelf bracket [Figure 7] Shelf brackets folded down [Figure 8] Shelf brackets folded halfway down [Figure 9] When using shelf brackets [Figure 10] Illustration of the handrail and top of the rear legs [Figure 11] "A" for use in gymnastics. "I" for use as a chair by rotating the handrail 270 degrees and hanging it on the side of the rear legs. [Figure 12] Rear leg side view and handrail for swivel mounting [Figure 13] "I" Plan view of the facility used for exercise; "B" Plan view of the facility used as a chair with the handrail folded up [Figure 14] An enlarged explanatory diagram of the left and right handrails attached when a rectangular handrail frame is installed so that it can rotate freely. [Figure 15] Retractable step stool [Figure 16] Rear perspective view after exercise [Figure 17] Rear perspective view of a person doing gymnastics DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] The usage is explained below. The gymnastics chair (1) of the present invention is made of wood or metal, and has handrails (1-1) on the back of the top of the rear legs of the chair, parallel to each other on the left and right and parallel to the floor (Figure 1). This is because the aging of the population has progressed in recent years, and although it is good to see that the number of elderly people living longer is on the rise, the number of elderly people who need nursing care is also on the rise, and the increase in medical and nursing care costs is becoming a problem. As people age, the strength of their lower limbs weakens, making it difficult for them to walk and requiring them to use wheelchairs, and there are also an increasing number of elderly people who are bedridden and cannot live without nursing care. In order to live at home, it is necessary to train the muscles of the lower limbs on a daily basis. There are many exercises on the radio and television, but people who cannot stand do them while sitting. I think this is because they are afraid of falling, but I think exercises that strengthen the lower limbs are necessary. Squats, toe raises, heel raises, etc. can be performed by holding onto the back of a chair, but thigh raises, front steps, and climbing up and down a step require back and forth movement as well. If there are handrails that are wider than your body, higher than the greater trochanter, parallel to each other on the right and left, and parallel to the floor, you can hold onto the handrails with both hands and perform lower limb exercises safely without falling.
[0012] Since the chair is for the elderly to use while holding on to it with one hand to do exercises (1), it is currently very inconvenient, so it is essential to install a folding shelf bracket on the back. The handrails get in the way when walking around the room, because the gymnastics chair is used as a chair for everyday use. Therefore, one of the folding shelf brackets (2-2) is attached to the bottom of the handrail (1-1), and the other (2-3) is installed vertically on the back of the top of the rear leg. This makes the handrail parallel to the floor when doing gymnastics, and when using it for everyday use, the shelf brackets can be folded up and the handrail can be stored vertically on the back of the chair.
[0013] The material can be wood, synthetic resin or metal, depending on preference. To install handrails, holes (3-2) were made at one end of the left and right handrails (1-1) (Fig. 7). A rotating shaft (3-3) was installed on the uppermost side of the left and right rear legs, and the handrail (1-1) was attached to the hole (3-2) by inserting the shaft (3-3) (Fig. 8). In addition, a handrail support (3-4) is provided behind the rotation axis (3-3). This allows the handrail to be parallel to the floor behind the chair when performing exercises, and when the exercises are finished, it can be rotated 270 degrees and stored vertically on the side of the rear leg of the chair so that it can be used as a chair.
[0014] People with particularly weak leg strength need to hold on to the handrails firmly, so it is safer for there to be perpendicular supports to the floor in front and behind the handrail (1-1). Therefore, two rectangular frames (4) with handrails on top were installed behind the chair. The right rectangular frame (4-1) was attached to the right rear leg of the chair, and the left rectangular frame (4-2) was attached to the left rear leg of the chair using hinges. As a result, when doing gymnastics, the left and right handrails are parallel to each other and to the floor behind the chair, safely supporting the body. After finishing the exercises, the right handrail can be rotated 90 degrees to the left behind the right rear leg and placed behind the chair, and the left handrail can be rotated 90 degrees to the right behind the left rear leg, folded up and stored, and the gymnastics chair can be used as a chair.
[0015] Climbing up and down on a step stool is an effective exercise for strengthening the muscles of the lower limbs. If you attach a step stool in the shape of a drawer under a chair, you can pull it out when exercising and do the exercises by climbing up and down, and then put it back when you finish exercising, so you won't have to worry about where to put the step stool.
[0016] The gymnastics chair is made of wood and the shelf brackets are made of metal, but the handrail (1-1) can be changed to be entirely made of metal so that it can be used. [Explanation of symbols]
[0017] 1. Gymnastics chair body 1-1.Handrails 1-2. Hind legs 1-3. Kasagi 1-4. Backrest 2. Handrails with folding shelf brackets 2-1. Folding bracket attachment part on the handrail side 2-2. Folding shelf bracket 2-3. Folding bracket attachment part on rear leg side 3. Rotating handrails 3-1. Rotation axis 3-2.Hole in the handrail 3-3. Handrail support 4. Rectangular handrail frame 4-1.Rectangular handrail frame on the left 4-2. Left hind leg 4-3.Rectangular handrail frame on the right 4-4.Right hind leg 4-5.Hinges 5. Retractable step stool 5-1. Storage location for the retractable step stool
Claims
1. The gymnastics chair (1) is made of wood or metal, and has handrails (1-1) that are parallel to each other and to the floor on the left and right sides of the top back of the rear legs (1-2) of the gymnastics chair, which are located at both ends of the backrest (1-4) and perpendicular to the floor. One of the foldable shelf support brackets (2-2) is attached to the bottom of each of the left and right handrails (1-1), and the other (2-3) is installed vertically at the top of the back of the rear legs, so that the handrails are parallel to the floor when doing gymnastics, and when the exercises are finished, the shelf support brackets (2-2) can be folded up and stored vertically on the back of the chair, allowing it to be used as a chair for everyday use. The gymnastics chair also has a retractable step stool (5) at the bottom of the chair as a step stool for getting up and down, which is considered to be the most effective form of lower limb exercise.
2. The gymnastics chair according to claim 1, wherein a rotating shaft (3-3) is provided on the side of the uppermost part of the left and right rear legs of the gymnastics chair described above, left and right handrails (1-1) with holes (3-2) at one end are attached so as to be freely rotatable, and a handrail support (3-4) is provided behind the rotating shaft (3-3) so that the handrails (1-1) are parallel to the floor surface, and the left and right handrails which are parallel to each other and to the floor during gymnastics can be rotated 270 degrees when the exercise is finished and stored on the side of the chair, so that the chair can be used as a chair for everyday use.
3. A gymnastics chair as claimed in claims 1 and 2, in which a retractable step stool (5) that can be pulled out and put back like a drawer can be installed under the seat of the chair, two rectangular frames (4) with a handrail (1-1) on one side at the top, the left frame (4-1) is hinged to the top back of the left rear leg (4-2) of the chair, and the right frame (4-3) is hinged to the top back of the right rear leg (4-4) of the chair, the left and right handrails being parallel to each other and to the floor during gymnastics, can be stored behind the chair when the exercise is finished, and the chair can be used as a daily chair.
4. The gymnastics chair according to claims 1, 2 and 3 is made of wood and the shelf brackets are made of metal, but the entire handrail (1-1) can be changed to be made of metal.
Citation Information
Patent Citations
Modular multifunctional combined rehabilitation training system
CN212730925U
Illuminating method of reflection microscope
JP1985086519A