JPH0649046B2 - Lumbar traction machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lumbar spine traction machine used for the prevention of lumbar vertebral diseases such as tight back, age, exercise, and other back and abdominal rigidity symptoms, or for strengthening treatment of muscle strength for stretching the latissimus dorsi muscle and supporting the spine. It is about.

[0002]

2. Description of the Related Art Conventionally, as a cervical traction device used for treatment of whiplash and the like, Japanese Utility Model Publication No. 43-6294 and Japanese Examined Patent Publication No.
The technique disclosed in Japanese Patent Publication No. 4-36432 or the like is known.

[0003]

In the conventional cervical traction device, a chair for seating a patient is fixed to the base of a strut, and a pulley for guiding a tow line is provided on an upper protruding portion of the strut. The tow line that suspends the holding part is rolled up with a winch that can be operated by the patient, and is configured to pull up the cervical spine and spine of a seated person upward, so that lumbar vertebrae diseases such as a tight lumbar can be prevented or Even if there is a problem that it can not be used as a lumbar traction machine to be treated, and even if it can be changed and used as a lumbar traction machine, a prescribed lumbar traction stroke (in the case of lumbar traction user In consideration of the seat height difference and the like, a pulling stroke of about 300 mm is required. Therefore, there is a problem that the height of the support column becomes high and the pulling machine becomes large as a whole.

The present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to pull the lumbar vertebra of the seat occupant up and down at the same time by operating the handle of the user (seat occupant) himself. It is an object of the present invention to provide a lumbar spine traction machine having a small strut height and a small structure capable of effectively preventing or treating lumbar spine diseases such as the lumbar region.

[0005]

In order to achieve the above object, a lumbar spine retractor according to the present invention comprises a strut device standing on a floor base, a seat on which a user sits, and a seat occupant. And a seat movable body equipped with a belt for fixing the lumbar region and the thigh of the seat so that it can be moved down from the seated position of a predetermined height to the strut device, and the chest and abdomen of the seated person are fixed. A backrest movable body which has a belt and can be moved up and down from the fixed position of the chest and abdomen at a predetermined height so that the seat movable body descends from the seat movable body and the backrest movable body. Occasionally, the backrest movable body rises and the backrest movable body descends when the seat movable body rises, and the chain-type interlocking mechanism incorporated in the pillar device and the chain drive sprocket of this interlocking mechanism are seated on the seat. By the person's handle operation A ratchet mechanism for rotating in one direction is provided, and the lumbar vertebra of a seat occupant can be pulled up and down by relative movement due to lowering of the seat movable body and raising of the backrest movable body. .

A preferred structure of the supporting column device is a bearing casing provided on the floor-contacting base, a supporting column which is erected and fixed on the bearing casing, and a vertically long structure for moving a seat movable body and a backrest movable body up and down on the front surface. A device cover having an opening for covering the surrounding portion of the column, and adding the seat movable body, the backrest movable body, the interlocking mechanism, and the ratchet mechanism to the column device so that the seat movable body has a predetermined height. And a stopper for seat lowering, which can be stopped at the seating position of the seat and the reception stopped state of the movable seat can be removed by a lever operation of the seat occupant.
A compression spring for raising the seat, which is compressed when the engagement / disengagement stopper is removed and is compressed when the seat movable body is lowered by the seating load, and which raises and returns the seat movable body to the seated position when the seat occupant leaves the seat. It is desirable to equip it.

[0007]

According to the lumbar traction machine having the above-described structure, the lumbar vertebra of the seat occupant is simultaneously pulled in the vertical direction by operating the handle of the user (seat occupant) himself, and the lumbar spine system such as tight lumbar and interspinal constriction is detected. The disease can be effectively prevented or treated.

Further, since the lumbar vertebra of the seat occupant is pulled up and down by the relative movement due to the lowering of the seat movable body and the raising of the backrest movable body, the pulling stroke required for the lumbar spine pulling (for example, a pulling stroke of 300 mm). Can be divided into a descending stroke of the seat movable body and an ascending stroke of the backrest movable body, and the height of the strut device can be made lower than that of the conventional device that pulls only upward, and the overall size of the towing machine can be reduced. You can

[0009] In particular, an engagement / disengagement stopper for preventing a seat descending for receiving and stopping the seat movable body at the seating position of a predetermined height on the strut device, and a seat rising for compressing when the seat movable body is descended by a seating load. When the compression spring is provided, it is possible to secure a predetermined seat height at which the user can easily sit with the stopper and to easily sit, and by removing the stopper by operating the lever of the seat occupant, The seat movable body is lowered by the sitting load against the elastic force of the compression spring,
When the seated person himself / herself operates the handle in the lowered state (spring supported state) of the seat movable body, the lumbar vertebra of the seated person can be pulled more strongly in the vertical direction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a lumbar spine retractor according to an embodiment of the present invention will be specifically described below with reference to the drawings. In the figure, 1 is a bearing housing 2
With a flooring base, the bearing housing 2 of the flooring base 1
A pipe strut 4 vertically erected and fixed on the bearing casing 2 via a mounting member 3, and a device cover 5 having a vertically long opening 5a on the front surface and covering the surrounding portion of the strut 4. The pillar device 6 having a height dimension H of about 1200 mm is constituted by the above.

Reference numeral 7 has a seat 8 on which a user sits, and belts 9 and 10 for fixing the waist and thighs of the seated occupant M,
A movable seat body that can be moved up and down is installed on the strut device 6 so as to be able to move downward from a sitting position of a predetermined height h (a seat height position of about 500 mm where the user can easily sit). A cylindrical elevating slider 12 fixed by a mounting tool 11 to a strut front-side moving portion of an endless chain 30 described later, which is slidably fitted so as to be able to descend to an intermediate height position of the strut 4, and the elevating slider 12 2 is welded as shown in FIG. 9 and exposed to the front side of the cover 5 through the vertically long opening 5a of the cover 5 as shown in FIG. The seat frame 14 is fixed at a right angle, the seat 8 having a seat plate and the thigh fixing belt 10 are attached to the seat frame 14, and the waist support bracket 13 is fixed to the waist portion. Belt 9 and Koshiate pad 15 in FIG. 2,
It is attached as shown in FIG.

A space between the slider 12 and the bearing housing mounting member 3 is compressed when the seat movable body 7 is lowered by a seating load, and a seat movable body is moved when the seat occupant M leaves the seat 8. A seat raising compression spring 16 for raising and returning the seat 7 to the seated position is wound around the column 4 and is provided as shown in FIG.

Reference numeral 17 has belts 18 and 19 for fixing the chest and abdomen of the seated occupant M so that they can be moved up and down from the chest and abdomen fixing position (a position shown in FIG. 3) at a predetermined height on the supporting column device 6. The backrest movable body that can be moved up and down is mounted, and the backrest movable body 17 is slidably fitted to the upper position of the support column 4 so as to be fixed thereto and fixed to the rearward moving portion of the support column of the endless chain 30 by the fixture 20. A cylindrical lifting slider 21 and a back bracket 22 having a U-shaped cross section which is welded to the lifting slider 21 and exposed to the front side of the cover 5 through the vertically long opening 5a of the cover 5 as shown in FIG. Consists of
A chest fixing belt 18 and an abdominal fixing belt 19 and a pair of backrest pads 23a and 23b are attached to the back support bracket 22 as shown in FIGS.
A compression spring 24 for preventing interference between the upper and lower sliders is wound between the columns 4 and is provided between the columns 1 as shown in FIG.

Reference numeral 25 indicates that the backrest movable body 17 is raised when the seat movable body 7 is lowered and the backrest movable body 17 is lowered when the seat movable body 7 is raised. This is a chain-type interlocking mechanism that is interlocked. The interlocking mechanism 25 is a drive sprocket 27 provided in the bearing housing 2 so as to freely rotate about a handle rotation shaft 26, and a horizontal position above the support column 4. A driven sprocket 28 provided so as to freely rotate around a frame shaft 29, and a shaft casing hole between the driven sprocket 28 and the drive sprocket 27 so as to pass through the front side and the rear side of the column 4. 2a and an endless chain 30 stretched as shown in FIG. 2 via a base plate hole 31a.

The horizontal support shaft 29 for supporting the driven sprocket 28 may be pivotally supported by a support upper bracket (not shown) or the upper box portion of the apparatus cover 5, but in the case of this embodiment. Is a base plate 31 on the upper end of the pillar 4.
Then, two screw rods 32 and 33 are projected on the base plate 31 with a space in the left-right direction so as to project as shown in FIG. 10, and both end holes of the support shaft 29 are fitted into the screw rods 32 and 33. The upper and lower nuts 32a, 32b, 33a, 33b, which are screwed together, are fastened and fixed.

With such a structure, the nut 32 is
a, 32b, 33a, 33b are loosened and the horizontal support shaft 29 is raised and lowered to adjust the distance between the drive sprocket 27 and the driven sprocket 28, and the endless chain 30 stretched between the sprockets 27, 28 is adjusted. The tension can be easily adjusted.

The handle rotating shaft 26 is the bearing housing both side plates 2
As shown in FIG. 4, the center holes b and 2c are inserted and supported, and the pair of left and right handle rods 35 and 36 fitted to the shaft portions of both ends are rotated by the seat occupant M tilting and operating them. However, as shown in FIG. 5, the handle rotation shaft 26 is brought into contact with the protruding fixing pin 37 of the bearing housing side plate 2c as shown in FIG. 5, and the standing inclination angle α of the handle rods 35 and 36 (inclination angle of 15 degrees in the embodiment) is regulated. 4, a stopper plate 38 and a separating plate 39 to which the screw spring 40 for returning the handle is mounted are fixed as shown in FIG. 4, and the separating spring 39 is interposed and fixed between the separating plate 39 and the bearing housing other side plate 2b. The stopper plate 38 is attached to the protruding fixing pin 37 by the spring force of 40 in FIG.
The handle rotation shaft 26 is urged to rotate clockwise in FIG.

Reference numeral 41 denotes a ratchet mechanism for rotating the chain drive sprocket 27 of the interlocking mechanism 25 in one direction by operating the handle of the seat occupant M. The ratchet mechanism 41 is provided at one end of the boss portion 27a of the drive sprocket 27 as shown in FIG. As shown in FIG. 2, the ratchet gear 42, which is fixed as shown in the drawing, rotates the circulation of the handle rotation shaft 26 integrally with the drive sprocket 27, and the ratchet gear 42 is always engaged and disengaged with the ratchet gear 42 as shown in FIG. As shown in FIG. 6, when the tilting operation is performed as indicated by the line, the ratchet feed pawl 43 that pawls the ratchet gear 42 as shown in FIG. 6, and the bearing housing one side plate 2c is pivotally supported by the pin 45 at the intermediate portion and the stopper plate 38 at the tip portion. A vertically rotatable pivot lever 4 that is biased by a spring 47 so as to come into contact with the lower side as shown in FIG.
6 and is integrally provided on the inner side of the rotating lever 46, and is normally engaged and disengaged from the ratchet gear 42 as shown in FIG. 5, and when the handle rods 35 and 36 are tilted and operated as shown by the imaginary line in FIG. As shown in FIG. 6, a ratchet reverse rotation preventing pawl 48 that pawls the ratchet gear 42, and an operating lever 49 that releases the pawl engagement state of the ratchet reverse rotation preventing pawl 48 (provided on the hand-held operating portion of the handle rod 36). ) And a tow rope 50.

The ratchet feed pawl 43 is pivotally supported by the pin 44 at the tip of the stopper plate 38 as shown in FIGS. 4 and 5 and is urged to rotate in the pawl engaging direction by a screw spring (not shown). By contacting the pin support projection 43a of the ratchet feed pawl 43 with the tip of the fixing pin 37 as shown in FIG. 5, the engagement / disengagement state of the ratchet feed pawl 43 as shown in FIG. 5 is maintained. It has become. The tow rope 50 is a flexible wire rope that connects an operation lever 49 and a rotation lever 46, and is installed along the handle rod 36 so as to extend along the bearing housing 2.
Is inserted into the rope guide tube 51 fixed to the upper surface of the.

Reference numeral 52 denotes an engagement / disengagement stopper for preventing the seat from descending, which receives and stops the movable seat body 7 at a seating position of a predetermined height.
The engagement / disengagement stopper 52 is a seat support rod of a predetermined length pivotally supported on the front upper surface portion of the bearing housing 2 so as to be rotatable in the front-rear direction. The seat movable body 7 is stopped at a seating position of a predetermined height by receiving 53 as shown in FIG. 8, and the seat occupant M tilts and operates the raising / lowering lever 54 rotatably attached to the horizontal shaft 53 by the right hand. At this time, the stopper projection 55 provided at the base end portion of the lever pushes the upper end portion of the rod toward the support column 4 to release the engagement of the engagement / disengagement stopper 52 (seat support rod) with respect to the horizontal shaft 53. Is able to. The engagement / disengagement stopper 52 has a rod spring 5 shown in FIG. 2 so that the upper end of the rod is pressed against the stopper projection 55.
When the seat movable body 7 is pivotally displaced by 6 and is released by the lever operation of the seat occupant M, the bracket movable position (cavity in the waist receiving bracket 13) allows the seat movable body 7 to descend. Is rotatively displaced to a position where the lower part passes.

1 and 2 show a normal state in which the movable seat body 7 is received and stopped by the engagement / disengagement stopper 52 at a seating position of a predetermined height. In this state, the ratchet mechanism 41 is endless. The chain 30 is in a disengaged state as shown in FIG. 5 in which the chain 30 can rotate freely.

Therefore, in the state shown in FIGS. 1 and 2, the user sits on the seat 8 as shown in FIG. 3, and the waist fixing belt 9, the thigh fixing belt 10, the chest fixing belt 18 and the abdomen fixing belt 1 are placed.
9 is tightened, and then the engagement / disengagement stopper 52 is attached to the seat occupant M.
When it is removed by operating the lever, the seat movable body 7 is lowered by the seating load against the elastic force of the compression spring 16, and the backrest movable body 17 is raised by the interlocking rotation of the endless chain 30 due to the lowering of the seat movable body 7. The lumbar vertebra of the seat occupant M is pulled up and down by the sitting load.

In this state, the seated occupant M makes the handle bar 3
When the handle 5 and 36 are gripped with both hands and the handle is tilted as shown by the phantom line in FIG. 2, the ratchet mechanism 41 shown in FIG.
The endless chain 30 is forcibly driven and rotated in the lumbar vertebrae pulling direction by the feeding operation as shown in FIG. 3, and the lumbar vertebra of the seat occupant M can be pulled more strongly in the up and down direction, which is effective for lumbar spine diseases such as tight lumbar. Can be prevented or treated.

The traction state of the lumbar vertebra can be maintained for a desired time by latching with the ratchet reversing prevention claw 48 of the ratchet mechanism 41. If it is removed by operating the erecting lever 54, the lumbar spine traction state is released, and the ratchet mechanism 41 returns to the engagement / disengagement state as shown in FIG. 5, so that the seat 8 is slightly moved by the spring force of the compression spring 16. When the seats M are separated from the seat 8 when the belts 9, 10, 18, 19 are removed when the seat movable body 17 is raised (the backrest movable body 17 is slightly lowered), the seat movable body 7 is moved by the spring force of the compression spring 16. It is raised and returns to its original position (the position shown in FIGS. 1 and 2), and the backrest movable body 17 is lowered by the interlocking rotation of the endless chain 30 and returned to its original position (the position shown in FIGS. 1 and 2). So go back to.

[0025]

Since the lumbar spine retractor of the present invention has the structure described in the claims, the lumbar spine of the seat occupant M is moved up and down by operating the handle of the user (seat occupant) himself. It is possible to effectively prevent or treat lumbar vertebral diseases such as tight back by pulling simultaneously in the directions.

Further, the seat movable body 7 is lowered and the backrest movable body 1 is moved.
Since the lumbar vertebra of the seat occupant M is pulled in the vertical direction by the relative movement due to the ascent of 7, the pulling stroke (for example, a pulling stroke of 300 mm) necessary for pulling the lumbar vertebra is lowered by the seat movable body 7 and the backrest movable body. The lifting stroke of 17 can be divided into two, and the height of the column device 6 can be made lower than that of the conventional device that pulls only upward, and the overall size of the towing machine can be reduced. In particular, an engagement / disengagement stopper 52 for preventing the seat descending for receiving and stopping the seat movable body 7 at the seating position of a predetermined height on the strut device 6, and a seat rising that is compressed when the seat movable body 7 descends due to the seating load When the compression spring 16 for the vehicle is provided, the seat height can be secured by the stopper 52 so that the user can comfortably sit, and the stopper 52 can be operated by the lever operation of the seat occupant M. By removing the seat movable body 7 from the compression spring 1.
6 is lowered by a seating load against the elasticity of 6, and the seated person himself / herself operates the handle in the lowered state (spring support state) of the seat movable body 7, whereby the lumbar spine of the seated person M is further strengthened in the vertical direction. It has excellent practical effects such as being able to be towed.

[Brief description of drawings]

FIG. 1 is a front view of a lumbar spine retractor according to an embodiment of the present invention.

FIG. 2 is a central longitudinal sectional view taken along the line AA of FIG.

FIG. 3 is a side view showing the lumbar traction machine of the present invention in a belt tightened state when the seat is seated.

FIG. 4 is a cross-sectional plan view taken along the line BB of FIG.

5 is a sectional view taken along the line CC of FIG.

FIG. 6 is an operation explanatory view of the ratchet mechanism shown in FIG.

7 is a cross-sectional plan view taken along the line DD of FIG.

8 is a side view of a main part of FIG. 7 as seen from the front.

9 is a cross-sectional plan view taken along the line EE of FIG.

10 is a vertical cross-sectional view taken along the line FF of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Floor contact base, 2 ... Bearing housing, 4 ... Pipe support | pillar, 5 ... Device cover, 6 ... Support device, 7 ... Seat movable body, 8 ... Seat,
M ... Towing machine user (seat occupant), 9 ... Waist fixing belt, 10 ... Thigh fixing belt, 11 ... Chain attachment,
12 ... Lifting slider, 13 ... Waist receiving bracket, 14 ...
Seat frame, 16 ... Compression spring for raising the seat, 1
7 ... Back support movable body, 18 ... Chest fixing belt, 19 ... Abdominal fixing belt, 20 ... Chain attachment, 21 ... Lifting slider, 22 ... Back support bracket, 24 ... Compression spring for preventing vertical slider interference, 25 ... Interlocking movement Mechanism, 26 ... Handle rotating shaft, 27 ... Drive sprocket, 28 ... Followed sprocket, 30 ... Endless chain, 35, 36 ... Handle rod, 40 ... Handle return screw spring, 41 ... Ratchet mechanism, 42 ... Ratchet gear, 43 ... Ratchet feed pawl, 46 ... Rotating lever, 48 ... Ratchet reverse rotation prevention pawl, 49 ... Operating lever, 50 ... Tow rope, 52 ... Seat lowering prevention engagement / disengagement stopper, 53 ... Bracket horizontal shaft, 5
4 ... Raising lever, 55 ... Stopper protrusion.

Claims (2)

[Claims] 1. A column device that is erected on a floor-contacting base, a seat on which a user sits, and a belt that fixes the waist and thighs of the seat occupant and has a predetermined height. A movable seat body that can be moved up and down so that it can be moved down from the sitting position, and a belt that fixes the chest and abdomen of the seat occupant so that it can be moved up and down from the chest and abdomen fixing position at a predetermined height to the column device. The backrest movable body that can be lifted up and down, and the seat movable body and the backrest movable body rise when the seat movable body descends, and the backrest movable body descends when the seat movable body rises. A chain-type interlocking mechanism incorporated in the strut device to interlock with each other, and a ratchet mechanism for rotating the chain drive sprocket of this interlocking mechanism in one direction by a handle operation of a seat occupant,
A lumbar spine traction machine characterized in that the lumbar spine of a seated person can be pulled up and down by relative movement by lowering the seat movable body and raising the backrest movable body. 2. A bearing housing in which the pillar device is provided on a floor-contacting base, a pillar vertically fixed on the bearing housing, and a vertically long opening for moving a seat movable body and a backrest movable body upward and downward. And a device cover for covering an outer peripheral portion of the support column, and the support device is added to the seat movable body, the backrest movable body, the interlocking mechanism and the ratchet mechanism so that the seat movable body has a predetermined height. An engaging / disengaging stopper for seat lowering prevention that can stop and stop the seat movable body at the seating position by operating the lever of the seat occupant and remove the engaging / disengaging stopper to move the seat movable body. A compression spring for lifting a seat is provided, which is compressed when the seat occupant descends due to a seating load and lifts and returns the movable seat body to the seated position when the seat occupant leaves the seat. The lumbar traction machine described in 1.