JPH0133066Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a waist stretcher suitable for stretching the back muscles, lower back, etc. that tend to curl up when bending forward.

Multiple bellows-like bags placed upright are inflated and deflated in response to the supply and discharge of compressed gas, and a plate with warts supported on the top of the bellows-like bags is moved up and down to stretch the back muscles. Back stretchers are well known, but
Such back stretchers tend to cause lateral sway when compressed air is supplied, making the support of the body very unstable, and at the same time, the action of stretching the back muscles becomes slow. A sufficient effect cannot be obtained. In addition, since the bellows-shaped bag is used, it has the disadvantage of increasing production costs.Furthermore, there is a risk of buckling during the process of supplying compressed air, so the degree of expansion of the bag is not used. It has various drawbacks, such as not being able to be adjusted according to a person's preference and not being able to prevent damage to the bag.

In addition, as a device to solve the above-mentioned drawbacks, there is a device described in Utility Model Publication No. 55-32583, for example, but since the air bag is surrounded by a case, the expansion and contraction of the air bag is difficult. There is no compression effect associated with this, and the only function is to press the body with a presser placed on the top of the air bag, and when the air bag deflates, the affected area is placed directly on top of the case. It has the disadvantage of becoming sluggish, and at that time, the body cannot return to its original natural shape. The oldest type of waist stretcher was just an air bag, and its ability to stretch the waist was limited, making it impossible to fully stretch the waist. Of course, it was only for stretching the waist, and it was impossible to perform pine surgery on other parts of the body.

In view of the fact that conventional waist straighteners had various drawbacks and did not function satisfactorily as waist straighteners, this invention was created by adding a ring-shaped inflatable bag to the bag used for waist stretching, back muscles, etc. using the
When compressed gas is fed into the bag, the inner materials forming the ring-shaped bag are pressed into contact with each other, and the repulsive force of the compressed air is mutually adjusted in the centrifugal and centrifugal directions. By doing so, it is possible to stabilize the support of the body and provide a strong and accurate waist stretching action or back muscle stretching action while covering a relatively wide area around the waist. To provide a waist stretcher which can exert a waist stretching effect of desired strength by operating a valve, and can sometimes be fitted to the arms or legs to perform pine surges on parts other than the waist. The purpose is to

Next, an embodiment of this invention will be described in detail based on the drawings.

FIG. 1 is an explanatory diagram of the use state of the waist stretcher in one embodiment of this invention, and shows a bag body 1 which expands and contracts in a ring shape in response to the supply and discharge of compressed gas.
, a compressor 3 that supplies compressed gas to the bag body 1 via a hose 2 that is a flow path for compressed gas, and a valve 4 that manually opens and closes the flow path for the compressed gas.
It is equipped with.

As shown in FIGS. 2 and 3, the bag 1 is made of a material 5 with low elasticity on the outside and a material 6 with high elasticity on the inside, and their ends are glued or welded. The two materials 5 and 6 are airtightly joined to form an air sac 7 between the two materials 5 and 6.
Furthermore, a vent hole 8 communicating with the air bladder 7 is provided on the outer material 5 side to enable connection of the hose 2.

Further, as shown in FIG. 2, the bag 1 may be formed into an endless shape from the beginning and inflated into a ring shape. The length of the bag 1 when unfolded is equivalent to twice the length of a normal waist extension bag, so a rectangular shape with a length equivalent to twice the length is velvet. They may be formed by connecting them in a ring shape using a connecting tool such as a fastener or slide fastener. In the latter case, by making the connection position changeable, the diameter when inflated can be changed.

Next, as the compressor 3, a belt type or direct-coupled rotary compressor, a diaphragm type compressor, an electromagnetic reciprocating compressor, or other structures can be used, but FIG. 5 shows one structure of the electromagnetic reciprocating compressor 3. An example is shown. In the compressor shown in FIG. 5, when the alternating current from the power source 12 is half-wave rectified by the diode 13, the electromagnet 14 repeats excitation and demagnetization in accordance with the frequency of the alternating current. piston 1
5 in the direction of arrow A to open the suction valve 16, and when demagnetized, the repulsive force of the spring 17 pushes the piston 15 in the direction of arrow B to open the discharge valve 18, allowing compressed gas to flow through the hose 2. send out.

FIG. 6 shows an example of the structure of a valve 4 for opening and closing a flow path.
Connection port 22 of hose 2 forming a flow path at the bottom of hose 1
a, 22b, and has a threaded portion 2 at its upper end opening.
The rotation adjustment member 24 is screwed in through 1a, 24a and the ring 23, and the manual operation member 25 is slidably provided within the rotation adjustment member 24. A coil spring 27 is disposed between a regulating valve 26 provided slidably within the cylinder 21, a manually operated exhaust valve 28 is disposed in the pressure regulating valve 26, and a coil spring 30 is disposed between the pressure regulating valve 26 and the guide member 29. A first exhaust port 31 opens the manually operated exhaust valve 28 against the coil spring 30 by pushing the manual operating member 25, and further discharges the compressed gas at a set pressure by operating the pressure regulating valve 26.
and a first exhaust port 32 that discharges compressed gas via the manually operated exhaust valve 28 when the manually operated member 25 is pressed.
It has a structure with

Next, the operation of this invention will be explained based on the above embodiment.

First, the patient lies supine, and after placing the bag 1 shown in FIG. 2 on the back or below the waist as shown in FIG. 1, the compressor 3 is operated to supply compressed gas. Compressed air is sent to the bag body 1 through the hose 2 and inflates the bag body 1, but since the outer material 5 of the bag body 1 does not stretch, the inner material 6 of the bag body 1 expands and the bag expands. The body 1 gradually expands within the range of the length of the outer material 5, that is, within the range of the outer circumference of the bag body 1, and the back or waist gradually arches. When the manual operation member 25 is pressed at the right time, the manually operated exhaust valve 2
8 opens, compressed gas is discharged from the first exhaust port 32, and the bag 1 contracts under the weight of the back and waist. When the pressure on the manually operated member 25 is released, the manually operated exhaust valve 28 closes again and the bag body 1 is inflated again. Further, if the manual operation member 25 is not pressed, the pressure of the compressed gas will gradually increase, but in this case, when the set pressure is reached, the pressure regulating valve 26 will open and the compressed gas will be discharged from the exhaust port. It is safe because it is discharged from 31 and the pressure is maintained at the set value. Note that this set pressure can be adjusted as appropriate by rotating the rotation adjustment member 24.

As mentioned above, in the process of the bag 1 inflating, first of all, in the initial stage of use, the bag 1 is flattened by being crushed by the body, so the part that bears the weight initially expands. In addition, at the short sides of the left and right sides that are folded in half, the inside of the bag is folded back and forth and communicates with each other, so there is a large resistance to air passage, and this part is where the weight is high. It is even harder to swell than the part where it is. However, the bag gradually expands over time.

Next, when you release your finger from the valve 4 and let the air out of the bag 1, the internal pressure is high at first, so a large amount of air is ejected for a time, but as the evacuation progresses, the air passing through the bag becomes more increases, the exhaust air becomes stale, and the air remaining in the area away from the vent hole 8 is slowly exhausted, so that all the air inside the bag is not exhausted.

When stretching the lower back using a so-called lumbar pillow-type air lumbar stretching pillow, it is necessary to strongly arch the lower back, so as much air as possible is introduced into the inside of the bag 1 to expand it greatly. However, if the introduced air is rapidly exhausted, the bag 1 will contract rapidly and will no longer be able to support the bag 1 in a lifted position. However, in the waist elongator of the present invention, as is clear from the above explanation of air supply and exhaust, the air exhaust becomes slower than at a certain point, so the air inside the bag is not all exhausted, and therefore the required time is reduced. After evacuation, when introducing air into the bag body 1 again, the inside of the bag body is filled with air by simply introducing a smaller amount of air than the amount of air initially introduced. Compared to the case, the effect of stretching the waist can be obtained by only supplying about half the amount of air.

FIG. 7 shows another structural example of a valve 4 for opening and closing a flow path.
2a, 42b, and a threaded portion 41 at the upper end opening.
A, 44a and the ring 43 are used to screw in a rotation adjustment member 44, and a manual operation member 45 is slidably provided within this rotation adjustment member 44, and a piston 45a integrally provided with this manual operation member 45 and a main A coil spring 47 is disposed between a pressure regulating valve 46 that is slidably provided within the cylinder body 41, a seal ring 48 is provided on the outer periphery of the pressure regulating valve 46, and an exhaust port is provided in the wall of the main cylinder body 41. It has a structure with 49. Therefore, when this valve 4 is used, when the manual operation member 45 is not pressed, the pressure regulating valve 46 moves in the direction of compressing the coil spring 47 to open the exhaust port 49.
Since the bag 1 is opened, it does not expand, but when the manual operation member 45 is pressed, the pressure regulating valve 46 closes the exhaust port 49 and acts as a pressurizing valve, so the bag 1 gradually expands. When the pressure of the compressed gas eventually exceeds the resistance of the coil spring 47 during the expansion process of the bag 1, the exhaust port 49 automatically opens to stop the expansion of the bag 1 in that state, acting as a safety valve. Note that by rotating the rotation adjustment member 44, the height of the upper surface thereof changes, so that the maximum pressing depth of the manual operation member 45 also changes, and the pressure acting as the safety valve can be changed.

As shown in each of the above embodiments, each manual operation member 2
By operating steps 5 and 45, you can stretch your back and hips at your desired strength. Furthermore, in each of the above embodiments, the bag 1 uses a material with low elasticity on the outside and a material with high elasticity on the inside, so that the bag 1 does not expand uselessly in the outward direction. This allows you to effectively stretch your back and lower back with a small amount of compressed gas. In addition, expansion of the bag 1 can be weakened by arranging auxiliary plates as necessary between the inner materials of the bag 1 that come into contact with each other during use.

Further, the valve 4 shown in the above embodiment has two connection ports 22a, 22b and 42a, 42.
b is provided and the hose 2 is connected to each of them so that the compressed gas flow path passes through the inside of the valve 4. However, by providing only one connection port and connecting the hose 2 to each of the hoses 2 that form the compressed gas flow path. It may also be possible to make a branch connection.

Further, the compressor 3 used in this invention is not limited to an electromagnetic reciprocating type.
However, an electromagnetic reciprocating compressor has a characteristic that the supply flow rate of compressed gas decreases rapidly when the rated pressure is exceeded, and the compressor enters a locked state at a relatively low pressure relative to the rated pressure, causing the compressor to compress the bag body 1. Since the supply of gas is stopped, together with the fact that the bag 1 is used in a ring-shaped state, an unnecessarily strong back-stretching action and waist-stretching action are not performed, and the bag 1 It will not damage the product. Furthermore, even if an electromagnetic reciprocating compressor is used with a low lock pressure, the flow rate of compressed gas at low pressure is higher than that of the other compressors mentioned above, so even a small and low discharge flow rate type can be used. There is an advantage that it can be done.

This invention has been explained above based on examples, but
This device supports the lumbar region with a rectangular bag that expands and contracts by repeatedly supplying and discharging compressed gas, and stretches the lumbar region by repeatedly inflating and deflating the bag. In the waist extension device, the side shape of the bag is formed into a ring shape, and the length of the bag when expanded is twice the length of a normal waist extension bag. When the bag of the waist extension device is used by placing it under the waist or back, the bag will be stacked in two layers, upper and lower, and the boundary between the upper and lower bags, that is, the bifold part of the bag, will Due to the side bulge prevention effect, the effect of stretching the waist is greater than that of the conventional one-piece bag. Therefore, it is possible to effectively lift the body with half the pressing force of the conventional example, and to straighten the rounded back muscles and straighten the bent hips. Moreover, since the inner materials of the bag have a structure in which they press into contact with each other, the inner materials do not stretch excessively, so compared to the conventional one-piece structure, excessive expansion does not occur, so they are joined together. There is no risk of parts bursting, it is advantageous in terms of strength and there is little risk of breakage, and the bag body does not sway due to contact friction between the inner materials, keeping the body in a very stable state. can do. In addition, since this invention does not use a bellows-shaped bag unlike the conventional example, production costs can be reduced.

Furthermore, since this invention uses a bag 1 that inflates into a ring shape, the bag 1 is worn on an arm or leg and compressed gas is repeatedly supplied and discharged, and the manual operation members 25 and 45 are repeatedly operated. If you operate it in a specific manner, you can get the desired pine surge effect, promote blood circulation in your hands and feet, and relieve fatigue and swelling.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the use state of the waist extension device in one embodiment of this invention, Figs. 2 and 3 are explanatory diagrams of the slope and partially enlarged cross section of the ring-shaped bag body, and Fig. 4 is an explanatory diagram of the waist extension device in use. FIG. 5 is a cross-sectional mechanism explanatory diagram showing one structural example of a compressor; FIGS. 6 and 7 are cross-sectional views showing each structural example of a valve. It is. 1... Bag body, 2... Channel, 3... Compressor, 4... Valve, 7... Air sac.

Claims (1)

[Scope of utility model registration request] It supports the lower back with a rectangular bag that expands and contracts by repeatedly supplying and discharging compressed gas.
In a waist stretcher that stretches the waist by repeatedly inflating and deflating the bag, the side surface of the bag is formed into a ring shape, and the length of the bag when expanded is the same as that used for normal waist stretching. A waist stretcher that is twice the length of the bag.