JPH0114204Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a back support member fixing device for a foldable chair-type pine surge machine.

Chair-type pine surge machines used at home are generally bulky, so if they are to be packaged, transported, and stored, it is extremely difficult to handle and requires a huge storage space. It was necessary.

Therefore, in recent years, there has been a demand for making the chair-type pine surge machine lighter or more compact in order to make it as easy to transport and store as possible.Currently, the back support member of the pine surge body A folding chair-type pine surge machine that can be raised and folded has been devised and is being manufactured and sold.

However, although this type of folding chair type pine surge machine can be packed more compactly than conventional ones when transporting or storing it, it is difficult to assemble when using it. Moreover, since the back support member that can be raised and lowered is equipped with a heavy actuating device, it takes a considerable amount of time to firmly hold the back support member upright in a state suitable for use. It was labor-intensive.

The present invention was made to solve the above-mentioned drawbacks, and includes a seat member having an appropriate thickness, a pair of armrest members on both sides that support the seat member at a predetermined height, and a seat member that is raised at the rear end of the seat member. In a folding chair-type pine surge machine comprising a back support member which is supported so that it can be folded down and has an actuating device installed therein, each end of the back support member is pivoted at appropriate positions on both sides of the back support member, and the lower part of the back support member is A U-shaped hanging rod that can swing downward is fitted into a conical insertion fitting protruding from the lower part of the hanging rod, and the insertion fitting is inserted into the back so that it can be supported to prevent it from coming off. A foldable type that can be fixed as easily and reliably as possible with a fixing fitting provided at a suitable location approximately in the center of the bottom surface of the member, and the back support member with the hanging rod attached thereto can be firmly held upright. This invention provides a back support member fixing device for a chair-type pine surge machine.

Hereinafter, the back support member fixing device of the present invention will be explained in detail based on an embodiment shown in the drawings.

Reference numeral 1 in the figure shows a folding chair-type pine surge machine, and the pine surge machine 1 includes a seat member 2 molded to an appropriate thickness and having cushioning properties, and a seat member 2 that supports the seat member 2 at a predetermined height. It is composed of a pair of armrest members 3 on both sides and a backrest member 4 which is supported so as to be able to rise and fall at the rear end of the seat member 2 and is equipped with an actuating device inside to perform the required pine surge. This device allows you to perform pine surgery on the back of the human body while keeping it in place.

Reference numeral 11 designates a back support member fixing device of the present invention configured to firmly hold the back support member 4 upright at the rear end of the seat member 2;
These can be roughly divided into: a U-shaped hanging rod 12 which is swingable on the back rest member 4 and is held by the elbow rest member 3 via a connecting rod 15; and a fixing fitting 19 for the latching rod 12 provided at an appropriate position approximately in the center of the lower surface of the holder. The back support member 4 to which the rod 12 is attached can be firmly held upright.

That is, the hanging rod 12 is connected to the back support member 4.
A pair of parallel vertical rods 1 whose upper ends are pivoted on both sides of the
3 and a horizontal rod 1 which is interposed to connect the lower ends of these vertical rods 13 and is swingable below the back support member 4.
4 and is formed in a U-shape, and at a suitable position approximately in the center of each vertical rod 13 of this hanging rod 12 is a connecting rod 15 whose one end is pivotally connected to the inner surface of the elbow rest member 3. An insertion fitting 16 is provided at approximately the center of the rear end of the horizontal rod 14 to protrude rearward from the horizontal rod 14, and has a conical tip end.

Reference numeral 17 denotes a cylinder device capable of raising and lowering the back support member 4, and the end of the rod 18 of the cylinder device 17 is plugged to the approximate center of the front end of the horizontal rod 14 of the latching rod 12. The rod 12 is supported so as to be tiltable as required.

Furthermore, 19 connects the hanging rod 12 to the back support member 4.
This is a fixing metal fitting fixed at approximately the center of the lower surface of the back support member 4 so as to be locked therein, and the fixing metal fitting 19 is provided with a round hole 20 for inserting the metal fitting 16 at a position relative to the insertion metal fitting 16. At the same time, a locking plate 21 biased by, for example, a spring 23 is provided on the protruding side of the insertion fitting 16 of the fixing fitting 19 so as to prevent the insertion fitting 16 from coming out after the insertion fitting 16 is fitted.
The locking rod 12 can be locked to the fixture 19 as easily and reliably as possible.

Incidentally, the detachment operation between the locking rod 12 and the fixing metal fitting 19 can be easily performed by pressing the protrusion 22 at the lower end of the locking plate 21 in the A direction.

Therefore, the back rest member fixing device of the present invention configured as described above allows the fixing operation of the latching rod attached to the back rest member to be performed only by locking the insertion fitting, and Since the members are supported by the hanging rod and the fixing metal fitting, the hanging rod and the connecting rod, and the hanging rod and the rod of the cylinder device, the back support member has a heavy actuating device inside. can be held upright as easily and reliably as possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing an embodiment of the present invention;
FIG. 2 is a perspective view showing a fixture of the present invention, and FIG. 3 is a rear view showing an embodiment of the present invention. Reference numeral 1 denotes a folding chair-type pine-surge machine, 2 a seat member, 3 an armrest member, 4 a back-rest member, 11 a back-rest member fixing device for a folding chair-type pine-surge machine, 12 a hanging rod, 15 1 is a connecting rod, 16 is an insertion fitting, 17 is a cylinder device, 19 is a fixing fitting, 20 is a round hole, 2
1 is a locking plate.

Claims (1)

[Scope of utility model registration request] A device capable of holding a back support member equipped with an actuating device for a foldable chair-type pine-surge machine upright between armrest members on both sides of a seat member, the device having an upper end on each side of the back support member. A U-shaped hanging rod is attached to the front surface of the lower end approximately in the center thereof, and a U-shaped hanging rod is connected to the cylinder device that provides the required raising and lowering motion, and approximately central portions on both sides of the hanging rod and each of the above-mentioned elbows are connected to the rod. A pair of continuous rods on both sides are pivotally connected to the inner surface of the member, an insertion fitting with a conical end protruding rearward from the rear surface of the lower end of the locking rod, and a conical tip facing the insertion fitting. A fixing metal fitting provided at a suitable position on the lower surface of the back support member and having a round hole for fitting the insertion metal fitting, and a locking plate for holding the insertion metal fitting to prevent it from coming out and biased toward the round hole. Features a back support member fixing device for a folding chair type pine surge machine.