JPS6311904B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of the outlet portion of a pine surge roller. In order to obtain several types of pine surge with different stimulation using one pine surge machine, it is necessary to replace the pine surge roller. It is extremely difficult to replace the pine surge roller from behind the backrest by opening the back plate of the backrest because there are a screw shaft, a guide rail, a lifting device, etc. for reciprocating the pine surge roller. Naturally, therefore, it is possible to replace the pine surge roller from the front of the backrest. However, although it is easy to create an outlet for the pine surge roller in the backrest fabric, the backrest fabric is repeatedly pushed out and pulled in slightly to the front due to the reciprocating movement of the pine surge roller. In addition, this type of pine surge machine is required to have a shape and configuration that allows it to be used as a normal reception chair when not being used as a pine surge machine. The present invention is constructed to fully satisfy these demands, and the drawings showing embodiments of the present invention will be described below.

In the present invention, the left and right side edges and the upper edge are sewn to the upper part of the backrest cloth 1 to the backrest part of the chair main body 2 so that the pine surge roller and the guide roller can be taken out while still fitted to the shaft. The upper edge of the open cloth part 3 is attached to the upper edge of the plate 7 of a cover plate 4 arranged along the backrest cloth inside the backrest cloth 1. . This cover plate 4 is
It consists of a plate 7 equipped with a slit 6 through which the working surface of the pine surge roller 5 can be exposed, and side plates 8, 8 formed on both sides of the plate 7. The shaft 10 is also rotatably supported on the shaft 9 with or without a fixture. The cover plate 4 is locked by horizontally protruding engaging claws 12, 12 on both sides of the upper end of the plate 7 toward the inside of the backrest 11, and an operating rod 1 at the upper part of the backrest 11.
3, and locking members 14, 14 that can be engaged with the engaging claws 12, 12 are fixed to both sides of the operating rod 13, and are engaged with the engaging claws 12 by rotating the operating rod 13. It is constructed so that the engagement with the stop member 14 can be released. That is, a flattened portion 15 is formed in the center of the operating rod 13, and the flattened portion 15 can be fitted into a groove 16 in which the operating rod 13 can freely rotate and the upper part of the groove 16. The locking member 18 is positioned in the groove 16 of the locking member 18 having a narrow groove 17, and the locking member 18 is vertically movably suspended from the top plate 19 of the backrest portion 11.
In the so-called pine-surge usage state in which the main body 23 of the lifting device, which has a nut body 22 screwed onto the screw shaft 21, is not in a predetermined storage position at the upper end of the backrest portion 11, the lifting device main body 23 is biased downward by the screw shaft 21. As shown, the lock member 18 is pushed down by the spring 20 to maintain a state in which the flattened portion 15 of the operating rod 13 is fitted into the narrow groove 17, that is, a state in which the operating rod 13 cannot be rotated. When the lifting device main body 23 is moved to a predetermined storage position at the upper end of the backrest portion 11, the locking member 18 is pushed up by the upper surface of the lifting device main body 23 as shown in FIG. The flattened portion 15 forms the thin groove 17 against the spring 20.
The lifting device main body 23 moves up and down to the position where it is removed from the backrest portion 11 together with the pine surge roller 5.
The operating rod 13 becomes rotatable and disengages from the engagement claw 12 and the locking member 14 only when the operating rod 13 is stopped at the storage position at the upper end of the lever. Reference numeral 24 denotes an arm whose one end is rotatably supported by the lifting device main body 23, and a pivot pin 25 is connected to the arm 24 to attach the lid body 2.
7 is supported so as to be openable and closable, and the lid body 27 is attached so as to be connectable and separable by means of a tightening screw 26. The pine surge roller 5 and the guide roller 28 are connected to the shaft 29 by the arm 24 and the lid body 27. It is constructed so that it can be attached and detached while it remains attached to the shaft. 3
0 is a guide rail, 31 is a cover whose one end is attached to the rear end of the upper surface of the chair main body 2, and whose other end is hung down to the front surface of the backrest cloth so as to cover the front surface of the opening cloth portion 3; Opening/closing means 32 such as metal fasteners or cloth fasteners are provided between the side edges of the backrest portion 11 and the side edges of the backrest portion 11 .

Since the present invention has such a configuration, when the pine surge roller 5 is replaced and pine surge with a different stimulation is desired, the pine surge roller is raised. Immediately before the pine surge roller 5 reaches a predetermined storage position at the upper end of the backrest portion, the upper surface of the lifting device main body 23 comes into contact with the lower surface of the locking member 18,
Since the locking member 18 is pushed up against the spring 20, the narrow groove 17 that had been fitted into the flattened portion 15 of the operating rod 13 is pushed up to a position where it separates from the flattened portion as shown in FIG. 5, and is lifted and lowered. Stop. When the lifting device main body 23 stops, the operating rod 13 is rotatable, so the cover 31
After flipping up the cover plate 4, turn the knob of the operating rod 13 to rotate the locking member 14 to disengage it from the engagement claw 12, and open the cover plate 4. After the cover plate 4 is opened with the shaft 10 as a fulcrum, loosening the tightening screw 26 opens the lid 27 to the fifth position.
Since it can be opened as shown by the chain line in the figure, the pine surge roller 5 and guide roller 28 can be
The guide roller 28 prepared in advance and the pine surge roller 5 that provides a different stimulation than those described above are set on the shaft 29, and the lid 27 is covered and tightened. screw 2
6 to fix the lid 27 on the arm 24. After replacing the pine surge roller in this manner, the cover plate 4 is rotated upright about the shaft 10, the engaging claw 12 is engaged with the locking member 14, the cover 31 is lowered, and the fastener is closed. By doing this, the replacement of the pine surge roller is completely completed. Therefore, after that, a switch (not shown) is turned on to rotate the screw shaft, and the lifting device main body 23 is turned on.
When the lever is lowered, the lock member 18 is pushed down by the elasticity of the spring 20, and the narrow groove 17 of the lock member 18 aligns with the flattened portion 1 of the operating rod 13.
5 and prevents the operating rod from rotating.

The present invention is configured such that the pine surge roller can be replaced only when the main body of the elevating device stops at a predetermined storage position at the upper end of the backrest portion, so that the pine surge roller outlet is opened during pine surge. Nothing happens. Moreover, since the plate at the outlet is provided with a slit through which the working surface of the pine surge roller 5 can be exposed, there is no problem in opening and closing the cover plate, and since only the upper edge of the opening cloth part is sewn to the plate, the cover plate can be closed easily. The opening/closing operation of the plate is easy, and no excessive force is applied to the opening cloth part when the pine surge roller moves.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view with the cover plate open, Fig. 2 is a partially peeled side view, and Fig. 3 is an enlarged view of main parts with the cover plate open. Perspective view, 4th
The figure is an enlarged side view of the main part showing the state when the operating rod is locked, and FIG. 5 is an enlarged side view of the main part showing the state when the operating rod is unlocked. 1...Backrest cloth, 2...Chair main body, 3...Opening fabric part, 4...Cover plate, 5...Pine surge roller, 6...Slit, 7...Plate, 8...Side plate, 9...Frame, 10...Shaft, 11...Backrest part, 12...engaging claw, 13...operating rod, 14...
Locking member, 15... Flattened portion, 16... Groove, 17...
Thin groove, 18... Lock member, 19... Top plate, 20... Spring, 21... Screw shaft, 22... Nut body, 23...
Mainly lifting equipment.

Claims (1)

[Claims] 1. An opening cloth part is provided in the upper part of the backrest cloth, the left and right side edges and the upper end edge are not sewn to the backrest part, and is formed on both sides of the plate with slits through which the working surface of the pine surge roller can be exposed. Only the upper end of the opening cloth part is sewn to the upper end of the cover plate, which is formed by rotatably supporting the side plate on a frame installed upright in the backrest part, and the upper end of the plate is horizontally protruded from both sides. The engaging claws are formed to be able to engage and detach from the locking members fixed on both sides of the operating rod that can be inserted into the backrest, and a flattened part is provided in the center of the operating rod, and the flattened part is rotated by the operating rod. The lock member has a movable groove and a narrow groove in which the flattened portion can fit into the upper part of the groove, and the lock member is fitted into the narrow groove, and the lock member is vertically movably suspended from the top plate in the backrest portion. The flattened portion of the operating rod is urged downward by a spring, and the engagement between the flattened portion of the operating rod and the narrow groove of the locking member is released by pushing up the locking member by the upper surface of the main body of the lifting device, which is raised and lowered by a screw shaft. The structure of the pine surge roller outlet section is characterized by being configured as follows.