JPS6312626B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device in a pine surge machine with replaceable pine surge rollers.

The pine surge machine, which performs a so-called rubbing action by rolling back and forth on the inner surface of the backrest, has a relatively simple structure, excellent durability, and is easy to handle, so it has become widely used. has the disadvantage that it is monotonous.
Recently, in order to improve this shortcoming and meet the requests of users, we have made the internal massager with replaceable pine surge rollers, and have prepared several types of pine surge rollers so that users can install the pine surge roller according to their preference. A pine surge machine has been proposed.
With this improved pine surge machine, replacing the pine surge roller is a little troublesome, but it has the advantage of being able to provide several different pine surge effects with just one machine. If the motor is touched and starts, there is a risk of an unexpected accident, and safety is still insufficient.

The present invention provides a safety device that prevents the motor from starting even if the operation switch is touched by mistake during the replacement work of the pine surge roller, especially in the pine surge machine as described above with a replaceable pine surge roller. .

The drawings showing the embodiments of the present invention will be explained below.As schematically shown in FIG. 3 rotates the backrest seat S along the guide rail 5 by alternating the rotational direction of the screw shaft 4.
In a pine surge machine that reciprocates while rolling on the inner surface of the pine surge, the pine surge roller main body 3 has a supporting portion 9 of a holder arm 8 pivotally attached to a moving frame 7 having a nut body 6 screwed onto the screw shaft 4. , second
As shown in the figure, it has a two-part structure, and the upper half 9A is connected to the lower half 9B by, for example, a pivot pin 10.
and a tightening screw 11 so that the pine surge roller main body 3 can be attached and detached from the holder arm 8, and a backrest so that the pine surge roller main body 3 can be stored when not in use. Storage section 1 provided at the upper part of section 12
3 is provided with an opening for putting in and taking out the pine surge roller main body 3, and the opening has slits 14, 14 through which the working surfaces of the pine surge rollers 1, 1 can be exposed, as shown in FIG. A plate 15 provided and side plates 1 formed on both sides of the plate 15.
A cover plate 17 consisting of 6 is pivotally attached to the backrest side frame so that the cover plate 17 can rotate from a closed position covering the entire surface of the opening to an open position separating the opening. The upper end portion of the backrest sheet S covering the front surface of the plate 17 is attached to the upper end portion of the cover plate 17, and is configured to be locked to the backrest portion side in the closed position. This cover plate 1
The locking means 7 is not particularly limited;
8, and an operating rod 19 is inserted into the upper part of the backrest portion, and a hook member 2 that can be engaged with the hook bodies 18, 18 on both sides of the operating rod 19.
0 and 20 are fixed, and the engagement between the hook body 18 and the hook member 20 can be released by rotating the operating rod 19. Preferably, a flattened portion 21 is formed in the center of the operating rod 19 as shown in FIGS.
and a narrow groove 23 in which the flattened portion 21 can fit into the upper part of the groove 22.
hangs vertically movably from the top plate 25 of the backrest portion and is biased downward by a spring 26, and when the moving frame 7 is not present in the storage portion 13, the spring 26 is suspended as shown in FIG. The locking member 24 is pushed down and the flattened portion 21 of the operating rod 19 is inserted into the narrow groove 2.
3, that is, a state where the operation rod 19 cannot be rotated, and the movable frame 7
When the locking member 24 is moved to the storage section 13, the locking member 24 is lifted up on the upper surface of the moving frame 7 as shown in FIG. 23, and only when the pine surge roller main body 3 together with the movable frame 7 is stopped in the storage section 13, the operating rod 19
is in a rotatable state, and the aforementioned hook body 18
It is preferable to configure the hook member 21 so that it can be disengaged from the hook member 21.

As described above, the present invention provides a pine surge machine in which a pine surge roller main body 3 consisting of a pine surge roller 1 and a guide roller 2 rotatably attached to a shaft is detachably attached to a moving frame 7. As shown in the figure and FIG. 7, the pine surge roller main body 3 that has reached the inside of the storage section 13 and stopped comes into contact with the guide roller 2 and is separated from the back side of the storage section 13 of the pine surge roller main body 3. A detection lever 27 that moves in contact and is elastically biased toward the guide roller 2 side is disposed, and one end of the detection lever 27 is connected to the guide roller 2 of the pine surge roller main body 3 at the other end of the detection lever 27. When the pine surge roller main body 3 is in contact with the spring 2, the on state is maintained, and when the pine surge roller main body 3 is replaced, the pine surge roller main body 3 is taken out from the moving frame 7 and the detection lever 27 is in contact with the spring 2.
A switch 29 is provided which turns off when the switch 8 is displaced as shown by the dotted line, and the switch 29 controls the electric control circuit 31 of the drive motor so that the pine surge roller main body 3 moves to the moving frame 7. The motor is constructed so that the motor will not be driven even if the operating switch is turned on by mistake while the main body 3 of the pine surge roller is being removed from the movable frame 7, that is, until the other pine surge roller main body 3 is attached to the moving frame 7. . In addition, in the embodiment, the above switch 2
Although a mode is shown in which the switch 9 is operated via the detection lever 27, the presence or absence of the guide roller 2 of the pine surge roller main body 3 may be directly detected by the switch 29 without using the detection lever.

As described above, the safety device in the pine surge machine of the present invention is such that the pine surge roller main body 3, on which at least one pair of left and right pine surge rollers 1 and guide rollers 2 are rotatably attached, is operated by changing the direction of rotation of the screw shaft 4. In a pine surge machine that reciprocates while rolling on the inner surface of a backrest sheet S along a guide rail 5, the pine surge roller main body 3
is detachably supported on a movable frame 7 having a nut body 6 screwed onto the screw shaft 4, and has an opening for taking out the pine surge roller main body 3.
A switch 29 is disposed on the back side of the guide roller 2 of the pine surge roller main body 3 located at 3, which cuts off the current circuit to the drive motor M when the pine surge roller main body 3 is taken out. Similar to the pine serge machine, when the operation switch is turned on and the motor is driven, the screw shaft 4 rotates, and as the movable frame 7 moves up and down, an upper limit switch and a lower limit switch (not shown) operate, and the pine surge roller main body 3 moves to a predetermined position inside the backrest. Pine surge rollers 1, 1 are applied to the back of the human body by reciprocating strokes.
The pine surge due to the rolling of is carried out without any trouble, and when the storage switch _S3 is turned on, the moving frame 7 moves up to the storage area 13 at the top of the backrest, the storage position arrival switch 30 is activated, and the motor M is stopped. At the same time, the switch 30 is turned on via the detection lever 27 by the guide roller 2 of the pine surge roller main body 3. Then, in order to replace the pine surge roller main body 3 with a different type, the front face of the storage section 13 is opened, the tightening screw 11 is loosened, the upper half 9A of the support section 9 is opened, and the pine surge roller main body 3 is inserted into the support section. When the switch 29 is removed from the drive motor M, the switch 29 is turned off via the detection lever 27, and the current circuit of the drive motor M is cut off.
As a result, when the pine surge roller main body 3 is not attached to the movable frame 7, even if the operation switch is turned on by mistake, the drive motor M
is not activated, and therefore the pine surge roller main body 3 can be replaced safely, and unexpected accidents can be prevented. Moreover, if the pine surge roller main body 3 is kept closed even when the main body 3 is removed, not only will it be impossible for young people to perform mischievous operations, but the device can also be comfortably used as an easy chair.

[Brief explanation of the drawing]

Figure 1 is a schematic side sectional view of the pine surge machine, Figure 2
The figure is a side view of the moving frame part, Figure 3 is a perspective view of the storage part, Figure 4 is a plan view of the operating rod, Figure 5 is a side view of the lock member, and Figure 6 is the relationship between the guide roller and the switch. FIG. 7 is a rear perspective view of the main parts, and FIG. 8 is a simplified circuit diagram of the drive motor. 1...pine surge roller, 2...guide roller, 3...pine surge roller main body, 4...screw shaft,
5... Guide rail, 6... Nut body, 7... Moving frame, 12... Backrest portion, S... Backrest seat, 13... Storage portion, 29... Switch.

Claims (1)

[Claims] 1. At least one pair of left and right pine surge rollers and guide rollers are rotatably attached to a shaft, and the main body of the pine surge roller moves back and forth while rolling on the inner surface of the back seat along the guide rail by alternating the rotational direction of the screw shaft. In the pine surge machine, the pine surge roller is removably supported by a movable frame having a nut body screwed onto the screw shaft, and the pine surge roller is located in a storage section having an opening for taking out the pine surge roller. A safety device for a pine surge machine with a replaceable pine surge roller, characterized in that a switch is disposed on the back of the guide roller to cut off the current circuit to the drive motor when the main body of the pine surge roller is removed.