This invention relates to chair type stretching apparatus which have seats and backrests. Particularly, this invention relates to a chair type stretching apparatus which is configured to give a stretch to a back and a lower back of the user.
Japanese patent application publication No. 2002-119558A discloses a prior chair type stretching apparatus. The prior chair type stretching apparatus has a seat and a backrest. The chair type stretching apparatus is configured to give the stretch to the user who sits on the seat and leans against the backrest. The chair type stretching apparatus has a plurality of air-bags which are disposed on a front surface of the backrest, and are disposed on the top surface of the seat. The air-bags are configured to expand and contract, whereby the chair type stretching apparatus gives the stretch to the user, by means of the air-bags.
However, the air-bags of the prior chair type stretching apparatus has two functions. One function is to support the user, and the other function is to press the user's body. Therefore, the chair type stretching apparatus is not capable of supporting the user's body may not press the user's body according to the user's body size. Consequently, there is a problem that the air-bags of the prior chair type stretching apparatus gives the stretch to a desired portion of the user.
This invention is achieved to solve the above problem. An object in this invention is to provide a chair type stretching apparatus being configured to give the stretch to the user certainly regardless of the user's body size.
In order to solve the above problem, the chair type stretching apparatus in this invention comprises a seat, a backrest, a flexible sheet, a tension means, and a controller. The seat has a depth and a width which respectively have individual widths along a width of a user's body. The flexible sheet is disposed on a top of the seat. The flexible sheet extends an entire width of the seat for supporting the user's buttocks. The flexible sheet is configured to be movable between a normal position and a projected position. When the flexible sheet is positioned in the normal position, the flexible sheet lies in a close relation with a top surface of the seat. When the flexible sheet is positioned in the projected position, the flexible sheet is spaced away from the top surface of the seat. The tension means is provided on the seat. The tension means is configured to apply tensional force to the flexible sheet so as to move a center of the flexible sheet toward an upper direction of the seat. The controller is configured to control the tension means in order to move the center of the flexible sheet to a vertical direction. The tension means is provided on at least one width end of the seat in order to apply the tensional force along a width direction of the seat to the flexible sheet. Consequently, the tensional means moves the center of the flexible sheet to the vertical direction.
This chair type stretching apparatus is configured to move the user's buttock to the upper direction by means of the flexible sheet. Therefore, the chair type stretching apparatus is configured to give the stretch to the user certainly regardless of the user's body size. In addition, the tension means is disposed on at least one width end of the top surface of the seat. Therefore, the chair type stretching apparatus with the tension means is capable of achieving the reduction of the cost and the reduction of the size of the chair type stretching apparatus.
It is preferred that the tension means is defined by a pressurizing means. The pressurizing means is configured to apply pressure along the upper direction of the seat to the flexible sheet. The pressurizing means is located between the seat and the flexible sheet. Consequently, the pressurizing means moves the center of the flexible sheet toward the upper direction. The controller is configured to control the pressurizing means so as to move the center of the flexible sheet along the vertical direction of the seat. The pressurizing means is disposed on both width ends of the seat in order to apply the pressure toward the upper direction of the seat to the flexible sheet. Consequently, the pressurizing means moving the center of the flexible sheet toward the upper direction with respect to the seat.
The chair type stretching apparatus is also configured to move the user's buttock to the upper direction. Therefore, the chair type stretching apparatus is configured to give the stretch to the user certainly regardless of the user's body size.
It is preferred that the flexible sheet has a front end and a rear end. The front end of the flexible sheet is fixed to a front end of the seat. The rear end of the flexible sheet is attached to a rear end of the seat to be movable in the vertical direction of the seat.
In this case, the flexible sheet is located at a portion faced to the user's buttock. Therefore, this configuration makes it possible for the chair type stretching apparatus to give the stretch to the user's buttocks effectively.
It is preferred that the flexible sheet is made of a hard foamed material.
This configuration makes it possible to reduce the contact force with respect to the user's buttocks. In addition, this configuration also makes it possible for the chair type stretching apparatus to give the stretch to the user effectively.
It is preferred that the flexible sheet and the pressurizing means are detachably attached to the seat.
In this case, it is possible to vary the position of the flexible sheet and the pressurizing means on the top surface of the seat. Therefore, this configuration makes it possible for the chair type stretching apparatus being configured to give the stretch to a desired portion of the user's body.
It is preferred that the chair type stretching apparatus comprises a stretching unit. The stretching unit is detachably attached to the top surface of the seat. The stretching unit is provided at its top surface with the flexible sheet. The stretching unit is provided at its both width ends of an inside of the stretching unit with the pressurizing means. Consequently, the flexible sheet and the pressurizing means are detachably attached to the seat.
In this case, it is possible to vary the position of the flexible sheet and the pressurizing means on the top surface of the seat. Therefore, this configuration makes it possible for the chair type stretching apparatus to give the stretch to the desired portion of the user's body.
It is preferred that the flexible sheet has both width ends which are respectively attached to both width surfaces of the seat. At least one width end of the flexible sheet is detachable attached to a predetermined area of the width surface of the seat.
In this case, it is possible to vary an amount of a slack of the flexible sheet in the width direction. Therefore, this configuration makes it possible to vary intensity of the stretch given to the user.
It is preferred that the pressurizing means is composed of air-bags and the pump. The air-bags are configured to expand and contract along the vertical direction. The pump is configured to send the air to the air-bag.
In this case, when the chair type stretching apparatus is stopped, the air-bags are contracted. Therefore, this configuration makes it possible to reduce the size of the chair type stretching apparatus.
It is preferred that the chair type stretching apparatus comprises a wall. The wall is located between the seat and the flexible sheet. The wall is located at one width end of the top surface of the seat. The tension means is defined by a pressurizing means. The pressurizing means is configured to apply pressure along the upper direction of the seat to the flexible sheet. The tension means is located between the seat and the flexible sheet so that the tension means moves the center of the flexible sheet. The controller is configured to control the pressurizing means in order to move the center of the flexible sheet toward the vertical direction of the seat. The pressurizing means is located at one width end of the seat such that the pressurizing means is located away from the wall. The pressurizing means is configured to apply the pressure along the upper direction of the seat to one end of the flexible sheet so that the pressurizing means applies the tensional force directed outwardly of a width direction to the flexible sheet.
In this case, the chair type stretching apparatus is configured to move the user's buttocks to the upper direction by means of the flexible sheet. Therefore, this configuration makes it possible to the chair type stretching apparatus to give the massage to the user's body certainly regardless of the user's body size.
It is preferred that the chair type stretching apparatus comprises walls. The walls are located between the seat and the flexible sheet. The walls are located at both width ends of the top surface of the seat. The tension means is defined by rollers. The rollers respectively hold width ends of the flexible sheet. The rollers are configured to wrap the flexible sheet around the rollers so that the rollers move the center of the flexible sheet toward the upper direction of the seat. The controller is configured to control the rollers in order to move the center of the flexible sheet to the vertical direction. The rollers are disposed on both the width surfaces of the seat. The rollers are configured to wrap the flexible sheet. Consequently, the rollers apply the tensional force directed outwardly of a width direction to the flexible sheet.
In this case, the chair type stretching apparatus is configured to move the user's buttocks to the upper direction by means of the flexible sheet. Therefore, it is possible to obtain the chair type stretching apparatus being configured to give the stretch to the user certainly regardless of the user's body size.
Further characteristics of the present invention and effects resulting there from can be better understood based on the best mode for carrying out the invention and examples thereof described below.
A chair type stretching apparatus in this invention is explained with attached drawings. In
The backrest 400 has a width along a lateral direction. In other words, the backrest 400 has the width along a width of the body of the user. As shown in
The backrest 400 includes applicators 441, arms 442, and a massaging device 443. The applicator 441, the arms 442, and the massaging device 443 are disposed within the opening 440. The arms 442 have front ends which respectively hold the applicators 441. The massaging device 443 holds rear ends of the arms 442. The massaging device 443 is activated upon receiving the electrical power. In addition,
The air-bags 420 are respectively disposed on the front surface of the backrest 400 and respectively located at both width ends of the backrest 400. The air-bags 430 are respectively disposed on the front surface of the backrest 400 and respectively located at both width ends of the backrest 400. The air-bags 420 and the air-bags 430 are arranged along a height direction of the backrest. The air-bag 420 and 430 are respectively shaped to have bellows. The air-bags 420 and 430 have bottom surfaces which are respectively attached to the front surface of the backrest 40 by the snap pin. The air-bags 420 and 430 are connected to the pump 220 through the hoses 230 respectively, shown in
Each one of the flexible sheets 421 and 431 is made of a cloth. The flexible sheets 421 and 431 are disposed in normal positions of lying in a close relation with a front surface of the backrest. The flexible sheets 421 and 431 are located in front of the air-bags 420, 430. The flexible sheets 421 and 431 are provided on the backrest 400 so as to extend over an entire width of the backrest 400. The flexible sheets 421 and 431 respectively have both lateral ends. Both lateral ends of the flexible sheets 421 and 431 are sewed on width side surfaces of the backrest 400. The air-bags 420 and 430 are respectively provided at its front surface with loop tapes. On the other hand, the flexible sheets 421 and 431 are respectively provided at its rear surface with hook tapes. Consequently, the air-bags 420 have the front surfaces which are fastened to the rear surface of the flexible sheet 420 by means of hook-and-loop fastener. Similarly, the air-bags 430 have the front surfaces which are fastened to the rear surface of the flexible sheet 431 by means of hook-and-loop fastener. The flexible sheet 421 has its width center which is faced to a lower back of the user in order to support the user's lower back. The flexible sheet 431 has its width center which is faced to the back of the user in order to support the user's back.
The seat 300 has a depth along the front-back direction, and a width along the width of the user who sits on the seat 300. As shown I Fig (a), the seat 300 is provided with air-bags 310 and the flexible sheet 311.
The air-bags 310 are disposed on both width ends of the top surface of the seat 300. The air-bags 310 are respectively shaped to have bellows shown in
The flexible sheet 311 is made of the cloth. The flexible sheet 310 is disposed on the top surfaces of the seat 300 and the air-bags 310. The flexible sheet 310 extends over an entire width of the seat 300, and also extends over an entire depth of the seat 300. The flexible sheet 311 has its width center which is faced with the buttocks. The air-bags 310 are respectively provided at its top surfaces with loop tapes. On the other hand, the flexible sheet 311 is provided at its rear surface which is faced with the top surface of the air-bags 310. The rear surface of the flexible sheet 311 is provided with hook tapes which are not shown. Consequently, the top surface of the air-bag 310 is fastened to the rear surface of the flexible sheet 311 by means of the hook-and-loop fastener. The flexible sheet 311 has both lateral ends which are respectively sewed to the both width surface of the seat 300. It is noted that the flexible sheet 311 is preferably made of a hard foamed material.
The chair type stretching apparatus 100 operates as follows. When the setting is entered by the operation device, the controller 340 controls the pump 220 and the electromagnetic valves 210 in order to send the air to the air-bags 420 and 430. Because the air-bags 420 and 430 are disposed on the front surface of the backrest 400, the air-bags 420 and 430 expands toward the front direction of the backrest 400. Consequently, the air-bags 420 and 430 apply the force along the front direction of the backrest 400 to the both width ends of the flexible sheets 421 and 431. That is, the air-bag 420 and 430 act as pressurizing means being configured to apply the force toward the front direction of the backrest to the flexible sheets 421 and 431. Both the lateral ends of the flexible sheets 421 and 431 are sewed to the both width surfaces of the backrest 400. Therefore, the air-bags 420, 430 generates the tensional force along outwardly the width direction of the flexible sheets 420 and 430 according to the expansion of the air-bags 420 and 430. That is, the air-bags 420 and 430 act as the tension means which is configured to generate the tensional force which are along the flexible sheets 420 and 430 and which are applied to the flexible sheets 420 and 430. When the air-bags 420 and 430 applies the tensional force along the lateral direction of the flexible sheet 421, 431, the air-bags 420 and 430 moves the lateral center of the flexible sheets 421 and 431 to front-back directions.
In addition, on the basis of the setting of the operation device, the controller 240 controls the pump 220 and the electromagnetic valves 210, whereby the pump 220 sends the air to the air-bag 310. The air-bags 310 are disposed on the top surface of the seat 300. Therefore, the air-bags 310 expand toward the upper direction of the seat 300. Consequently, the air-bags 310 apply the force toward the upper direction of the seat 300 to both the width ends of the flexible sheet 310 on the seat 300. That is, the air-bags 310 act as the pressurizing means for applying the pressure toward the upper direction of the seat 311. Both the width ends of the flexible sheet 311 are sewed to both the lateral surface of the seat 300. Therefore, when the air-bags 310 are expanded, the air-bags 310 generate the tensional force along outwardly the width direction of the flexible sheet 311. That is, the air-bags 310 act as the tension means being configured to generate the tensional force which is along the width direction of the seat and which is applied to the flexible sheet 310. The air-bags 310 move the width center of the flexible sheet 311 toward the upper direction by applying the tensional force along the lateral direction of the flexible sheet 311 to the flexible sheet 311.
The chair type stretching device 100 with this configuration makes it possible to give the stretch to the user who sits on the seat and leans against the backrest.
In addition, as shown in
The stretching unit 350 of this modification is shaped to cover an entire top surface of the seat 300. The stretching unit 350 is provided at its front end with the fastener 351. That is, the stretching unit 350 is detachably attached to the seat 300 by mean of the fastener 351.
The stretching unit 350 includes a hose 230 which is communicated with the air-bags 310. The hose 230 is pulled outwardly from the width surface of the stretching unit 350. The hose 230 has its one end with a connecting port (not shown) which is connected to the pump 220. The pump 220 is configured to send the air to the air-bags 310 through the hose 230.
Therefore, when the stretching unit 350 having the flexible sheet 311 is disposed in a close relation to a top surface of the backrest 400, the air-bags 350 are respectively configured to apply tensional force along the lateral direction to the flexible sheet according to the expansion of the air-bags 310. Consequently, it is possible to obtain the chair type stretching apparatus being configured to give the stretch to the user. It is noted that the stretching unit 350 preferably has a plurality of fasteners 451 each of which extend along the lateral direction to form a plurality of lines. In this case, it is possible to select the one line of the fasteners for attaching the stretching unit 350 to the seat 300. Consequently, the vertical position of the stretching unit 350 is varied. In addition, it is also possible to detach the stretching unit 350 from the seat 300 when the chair type stretching apparatus needs to give no stretch to the user.
Therefore, the chair type stretching apparatus is configured to give the stretch to the user when the flexible sheet 311 is disposed on the seat 300 and also the air-bags 310 are expanded. In addition, the loop tapes 312 are disposed on the certain areas of the both lateral surface of the seat 300. Therefore, the flexible sheet 311 has both lateral ends which are respectively detachably attached to the certain areas of the both lateral surfaces of the seat 300. Consequently, it is possible to vary slack in the lateral direction of the flexible sheet 311. As a result, it is possible to adjust intensity of the stretch which is given to the user. In addition, the flexible sheet 311 is movable along a front-back direction. Therefore, it is possible to adjust the position for giving the stretch to the user. It is noted that it is only required for the flexible sheet 311 to have one lateral end which is detachably attached to the seat 300.
With this configuration, as shown in
The controller 240 is configured to control the roller 390 such that the rollers 390 wrap the flexible sheet 311. Consequently, the rollers 390 apply the tensional force along the lateral direction of the flexible sheet 311. Therefore, the rollers 390 move the width center of the flexible sheet to the front direction. As a result, the flexible sheet 311 moves the portion of the user corresponding to the width center of the flexible sheet 311. Consequently, the chair type stretching apparatus gives the stretch to the user.
Next a modification of the seat 300 with using the air-bag is explained.
When the air-bag 310 receives the air from the pump, the slide member 540 slides the rear end of the support member 510 toward a front direction. According to movement of the rear end of the support member 510, the rear end of the support member 510 rotates such that the support member 510 allows the plate 510 to move toward the upper direction. As a result, the plate 510 applies the tensional force along the width direction to the flexible sheet 421. Therefore, the user applies the force to the air-bag 310 and the plate 500. The support members 510 and 520 gradually stand with respect to the top surface of the seat 300. As a result, a large ratio of the force applied from the user to the air-bag 310 and the plate 500 is supported by the support members 510 and 520. That is, a ratio of the force applied from the user to the air-bag 420 is reduced. Thus, this configuration makes it possible to move the user's buttocks toward the upper direction with low force.
In the seventh modification shown in
When the air-bag 310 receives the air from the pump 220, the air-bag 310 is expanded. According of expansion of the air-bag 310, the one end of the support member 530 is moved toward the front direction, while the other end of the support member 530 is rotated. In this case, the air-bag 310 moves the flexible sheet 311 by the force generated by the principle of leverage and large stroke. Therefore, the air-bag 310 is capable of applying the tensional force to the flexible sheet.
Although the present invention is described with particular reference to the above illustrated embodiment and modifications, the present invention should not be limited thereto, and should be interpreted to encompass any combinations of the individual features of the embodiment and modifications.
Number | Date | Country | Kind |
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2007-255861 | Sep 2007 | JP | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/JP2008/067286 | 9/25/2008 | WO | 00 | 3/26/2010 |