TW202312961A - Chair with standing assistance function capable of controlling lifting height of seat cushion according to applied force - Google Patents

Abstract

The invention relates to a chair with standing assistance function. While lifting one's body from sitting posture to standing posture, he should take knees as supporting points and use the strength of thighs to lift the upper body. Because an elder has insufficient muscle strength due to joint degeneration, he usually needs an aid for standing assistance while lifting his body from sitting posture to standing posture. However, the existed aids for standing assistance usually lift the user by spring or electric driving, so the user cannot recognize the lifted height in real time, and the operation is more complicated and thus the user can only adapt it after using many times. The invention utilizes the lifting mechanism combining gears and racks and an operation only using a mechanism, so that the user can control the lifting height of seat cushion according to the force applied by himself without using additional spring force or motor power.

Description

Chairs with assisted standing function

The invention relates to a chair with the function of assisting standing.

When getting up from a sitting position to a standing position, use your knees as a support point and use your thighs to lift your upper body.

Elderly people are unable to apply force due to joint degeneration, lack of muscle strength or knee injury. When changing from a sitting position to a standing position, they often use assistive devices to assist them in standing. Therefore, there is a patent announcement number of the Republic of China M506530 "Standing up chair device structure" which is used The motor is used as a power source with multiple connecting rods to change the position of the seat cushion and the seat back, making it easier for users to stand up, or there is US Patent No. US05316370A "Seat assist" which uses springs as a power source to make the seat cushion lift and change angle, assisting the user to get up and stand. However, this type of assistive device cannot allow the user to determine the lifting position, and the structure is complicated and expensive.

Therefore, the inventor proposes a chair with an auxiliary standing function in order to allow the user to control the height of the lift according to the amount of force exerted by the user, and the operation is simple and does not need to be used many times before getting used to it.

A chair body with a seating part; a seat cushion with a pivot end through which the seat cushion is rotatably arranged on the seat part; a lifting unit with a driving part and a transmission part, the transmission part is telescopic and One end is rotatably arranged on the chair body, the other end is pivotally connected to the seat cushion and has a distance from the pivot end, the driving member is linearly movable arranged on the chair body and tangentially connected to the transmission member, the The extension direction of the rotation center of the transmission part is the same as the extension direction of the pivot end center of the seat cushion; the drive part is operated to drive the transmission part to rotate telescopically, and the transmission part drives the seat cushion to the pivot joint The end is the center of rotation, which is raised at an angle to the top of the chair body.

Further, the driving part has a movable rod and a guide rail, the movable rod has a force application part and a rack part, the guide rail is fixed on the chair body, the movable rod is slidably arranged on the guide rail, and the transmission part has a gear , an outer tube and an inner tube, the gear is rotatably arranged on the chair body and the outer tube is fixed on the gear, the inner tube is movably arranged in the outer tube and pivotally connected to the seat cushion, the movable The rod meshes with the gear via the rack portion.

Further, the guide rail has a plurality of positioning grooves, each positioning groove is separated by a distance and arranged in the extending direction of the guide rail, and a handle is arranged on the force application part; the handle is operated to push the movable rod, so that the movable rod can be positioned on the guide rail. Move in the extending direction, and the handle can be fixed in one of the positioning grooves of the aforementioned positioning grooves, so as to fix the seat cushion in the raised position.

Further, the cushion has a support end, and a support rod extends from the support end, the pivot end is located at the front end of the cushion, the support end is located at the rear end of the cushion, and the transmission member is pivotally connected to the support rod.

Further, the chair body has a recess, and the seat cushion is arranged in the recess via the support rod.

According to the above-mentioned technical features, the following effects can be achieved:

1. It can assist the user to get up from a sitting position to a standing position.

2. The lifting height can be controlled according to the amount of force exerted by the user.

3. The structure is simple and no additional driving power is required.

Based on the above-mentioned technical features, the main functions of the chair with the standing aid function of the present invention will be clearly presented in the following embodiments.

Please refer to the first figure, the second figure and the third figure, the chair with the function of assisting standing of the present invention includes a chair body 1 , a seat cushion 2 and a lifting unit 3 .

The chair body 1 has a seat portion 11 and a concave portion 12, the seat cushion 2 has a pivot end 21 and a support end 22, the pivot end 21 is located at the front end of the seat cushion 2, and the support end 22 is located at the rear end of the seat cushion 2 The seat cushion 2 is rotatably arranged on the seating part 11 via the pivot end 21, a support rod 221 is extended from the support end 22, the seat cushion 2 is arranged on the recessed part 12 via the support rod 221, and the lifting unit 3 has a The driving part 31 and a transmission part 32, the driving part 31 has a movable rod 311, a guide rail 312 and a handle 313, the movable rod 311 has a force application part 3111, a rack part 3112, the handle 313 is arranged on the force application part 3111 And perpendicular to the movable rod 311 and protruding from the guide rail 312, the guide rail 312 has a plurality of positioning grooves 3121, each positioning groove 3121 is separated by a distance and is arranged on the extending direction of the guide rail 312, the transmission member 32 has a gear 321, An outer tube 322 and an inner tube 323, the gear 321 is rotatably arranged on the chair body 1 and the outer tube 322 is fixed on the gear 321, the inner tube 323 is movably arranged in the outer tube 322 and pivotally Connected to the support rod 221, the guide rail 312 is arranged on the chair body 1, the movable rod 311 is slidably arranged on the guide rail 312 and engaged with the gear 321 via the rack portion 3112, and the rotation center A2 of the gear 321 The extension direction is the same as the extension direction of the rotation center A1 of the pivotal end 21 of the seat cushion 2 .

Please refer to the third figure, the fourth figure, the fifth figure and the sixth figure. When the user sits on the chair with the function of assisting standing of the present invention and wants to get up from a sitting position to a standing position, the user uses the strength of the arm to go down. Applying a thrust force will make the handle 313 move to the bottom of the chair body 1 along the guide rail 312 when the handle 313 will prop up the upper body, and push the movable rod 311, so that the movable rod 311 is on the guide rail 312 Slide to the bottom of the chair body 1, the rack portion 3112 of the movable rod 311 connected to the gear 321 will drive the gear 321, make the gear 321 rotate and drive the outer tube 322 fixed on the gear 321 to rotate, When rotating, the inner tube 323 will telescopically move relative to the outer tube 322, and then drive the support rod 221 out of the recess 12, and make the seat cushion 2 connected to the inner tube 323 via the support rod 221 take the pivot end 21 as a Rotate the center, lift an angle to the top of the chair body 1, give the user a lifting force, and lift the user sitting on the cushion 2; use the strength of the arm to prop up the weight of the upper body and simultaneously make the cushion 2. Raising an angle toward the user, which can assist the user to get up from a sitting position to a standing position.

Please refer to the third figure, the third figure A and the fifth figure A, when the user operates the handle 313 to push the movable rod 311 to move on the guide rail 312, the user makes the handle 313 move along the guide rail 312 and rotate the handle 313, the handle 313 is fastened to one of the positioning grooves 3121, so that the seat cushion 2 (see the second figure) driven by the movable rod 311 is fixed at the raised position, and assists the user to get up from a sitting position to a standing position During the process, you can rest and lean against the cushion 2 (see the second figure) fixed at the raised position. After recovering your strength, turn the handle 313 to break away from the aforementioned positioning groove 3121, and operate the handle 313 again to push the movable rod. 311 moves on the guide rail 312 to assist the user to get up and stand.

Please refer to the fifth and sixth figures, when the user is going to sit on the chair with the function of assisting standing in the present invention, the user pushes the movable rod 311 through the handle 313 (see the third figure), so that the cushion 2 The pivotal end 21 is the center of rotation, which lifts up an angle to the top of the chair body 1 and touches the user's buttocks. When the user puts the weight of the upper body on the seat cushion 2, the user can directly push the handle 313 through the seat cushion 2. Know the weight of the upper body applied to the cushion 2, and at the same time operate the handle 313 to control the angle of the cushion 2 through the movable rod 311 (see the third figure), so that the user can use the assistance of the cushion 2. Standing posture sits down slowly on the chair with auxiliary standing function of the present invention.

Based on the description of the above-mentioned embodiments, it is possible to fully understand the operation of the present invention, use and the effect that the present invention produces, but the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the implementation of the present invention. The scope, that is, the simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention, all fall within the scope of the present invention.

1: chair body 11: Riding Department 12: Concave 2: Cushion 21: Pivot end 22: Support end 221: support rod 3: Lifting unit 31: Driver 311: movable rod 3111: Force Ministry 3112: Rack part 312: guide rail 3121: positioning slot 313: handle 32: Transmission parts 321: gear 322: outer tube 323: inner tube A1: The center of rotation of the pivoted end A2: The center of rotation of the transmission member

[The first figure] is a three-dimensional schematic diagram of the chair with the function of assisting standing in accordance with the present invention.

[The second figure] is a side view of the chair with the function of assisting standing of the present invention.

[The third figure] is a partial schematic view of the chair with the standing aid function of the present invention, where the movable rod is fixed to the positioning groove of the guide rail through the handle.

[Third Figure A] is a partial three-dimensional schematic diagram of the chair with the standing aid function of the present invention, where the movable rod is fixed to the positioning groove of the guide rail through the handle.

[Figure 4] is a schematic diagram of the user sitting on the chair with the function of assisting standing of the present invention.

[Figure 5] is a schematic diagram of the movement of the chair with the function of assisting standing in which the user moves the handle to lift the seat cushion and assist the user to get up and stand.

[Fifth Figure A] is a schematic diagram of the user moving the handle to lift the seat cushion and fixing the handle to the positioning groove of the guide rail to fix the seat cushion in the raised position of the chair with the standing aid function of the present invention.

[Figure 6] is a schematic diagram of the user of the chair with the standing aid function of the present invention changing from a sitting position to a standing position, getting up and standing in front of the chair.

1: chair body

2: Cushion

3: Lifting unit

A1: The center of rotation of the pivoted end

A2: The center of rotation of the transmission member

Claims (5)

A chair with a function of assisting standing, comprising: A chair body and a seating part; A seat cushion has a pivot end, and the seat cushion is rotatably arranged on the seating part through the pivot end; A lifting unit has a driving part and a transmission part. The transmission part is telescopic and one end is rotatably arranged on the chair body. movably arranged on the chair body and tangentially connected to the transmission member, the extension direction of the rotation center of the transmission member is the same as the extension direction of the pivot end center of the seat cushion; The driving part is operated so that the driving part drives the transmission part to rotate telescopically, and the transmission part drives the seat cushion to lift an angle above the chair body with the pivot end as the center of rotation. The chair with the function of assisting standing according to claim 1, wherein the driving part has a movable rod and a guide rail, the movable rod has a force application part and a rack part, the guide rail is fixed on the chair body, and the movable rod can slide is arranged on the guide rail, the transmission part has a gear, an outer pipe and an inner pipe, the gear is rotatably arranged on the chair body and the outer pipe is fixed on the gear, and the inner pipe is movably arranged on the The outer tube is pivotally connected to the cushion, and the movable rod is engaged with the gear through the rack portion. The chair with the function of assisting standing as in claim 2, wherein the guide rail has a plurality of positioning grooves, each positioning groove is separated by a distance and arranged in the extending direction of the guide rail, and a handle is arranged on the force applying part; operate the handle to push the The movable rod enables the movable rod to move in the extending direction of the guide rail, and can fasten the handle to one of the positioning grooves, so as to fix the seat cushion in the raised position. The chair with the function of assisting standing as claimed in claim 1, wherein the cushion has a support end, and a support rod is extended from the support end, the pivot joint is located at the front end of the cushion, and the support end is located at the rear end of the cushion, the The transmission member is pivotally connected to the support rod. According to claim 4, the chair with the function of assisting standing, wherein the chair body has a concave portion, and the seat cushion is arranged in the concave portion via the support rod.

Images