JPS6021755A - Output change-over apparatus of massager - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field 1] The present invention relates to a pine massage machine, in particular, a planetary mechanism is disposed between a drive source and a treatment element to apply braking to one of two outputs taken out from the planetary mechanism. This relates to an output switching device configured to transmit the other output to the treatment element.

[Background Art] The output switching device of a pine surge machine using a planetary mechanism as described in 1. selectively switches between activating the treatment element and moving the treatment element up and down along the back of the human body, for example. It is used for the purpose of transferring large torque, is compact and has a large reduction ratio, and does not generate noise when switching. It has favorable conditions.

However, the planetary mechanism alone cannot switch the power,
The braking mechanism is essential because only by applying braking to one of the two outputs that can be taken out from the planetary mechanism can the output of the other be transmitted to the treatment element. However, since there is a condition that this braking mechanism must be able to exert a braking force in both directions of Ilj, conventional braking ( A friction brake powered by a solenoid was used, but this friction brake could only control a small amount of torque, and in order to control a large amount of torque, it would have to be large, including the solenoid.
Furthermore, since each output of the planetary mechanism had to be provided separately, the advantages of using a number of planetary structures were canceled out.

[Objective of the Invention 1] The present invention has been made in view of the above points, and its purpose is to provide a pine surge (with the help of several output switching devices) that is compact and tends to control high-torque bidirectional rotation. It is on offer.

[Disclosure of the Invention] Accordingly, the present invention provides a system in which a planet (a number of planets are disposed between the drive source and the massager), brake is applied to one of the two outputs taken out from the planetary mechanism, and the other output is transferred to the massager. A cylindrical fixed hub, a pair of movable hubs connected to each output of the planetary mechanism described in -11 and arranged on both sides of the fixed hub in the axial direction, □These fixed hubs and Two pairs of braking coil springs are arranged on the inner and outer peripheries of each movable hub to perform braking in different directions, and outer collars are arranged on the outer periphery of each coil spring located on the outer periphery. A braking mechanism that brakes one movable hub with a coil spring that is composed of an inner collar arranged on the inner periphery of each coil spring located on the periphery, and is driven by a control input that rotates the outer collar and the inner collar. It is characterized in that it is equipped with a single reversible braking input that applies braking to any output of the planetary mechanism against bidirectional rotation, and the braking is achieved by the self-rope action of the coil spring (which can be released in several ways). This is what I used.

Next, the present invention will be described in detail based on an embodiment of a pine surge machine shown in the figure, which incorporates a pine surge (some structure) in the backrest of a chair. The lower end of the frame 1 is pivoted to the under frame 2, and there is a space between the frame 1 and the under frame 2. A gas spring 15 is attached to allow the backrest to recline freely.A pair of guide rails 12 each having a U-shaped cross section and facing opening surfaces are fixed to both sides of the frame 1 of the backrest.

Further, a headrest 1 and a headrest 3 are attached to the upper end of the frame 1, a cover sheet 14 is attached to the front of the frame 1, and further, vertically long support belts 99 are arranged on both sides of the back of the cover sheet 14. (・ru.

Now, the pine surge mechanism is equipped with a control box 26 on one side and a gear box 27 connected to the control box 26 with a connecting plate 28 on the other side. It has a pair of wheels 3 attached to it.

Each ring body 3 is composed of an eccentric inner ring 20 fixed to the main shaft 4 and an outer ring 21 freely rotatable on the outer periphery of the eccentric inner ring 20 via balls 22. are connected by a large number of ribs 23.

As is clear from FIG. 2, the main shaft 4 is a hollow pipe through which the drive shaft 5 is inserted, and a cylindrical body 62 is fitted at both ends so as to freely rotate. The drive shaft 5 has cylindrical bodies 62 at both ends thereof.
The cylindrical body 62 is provided with rollers 19 that run on the guide rails 12 and pinions 18 that mesh with the racks 11 that are thinly attached to each guide rail 12. Rollers 19 are also provided in both control box 26 and gearbox 27. A motor M, which is a drive source and can freely rotate forward and reverse, is provided on the side of the gearbox 27 so that the gearbox 27 acts as a housing for the stator 17, and is connected to the main shaft 4 via a reduction gear in the gearbox 27. The shaft 5 is selectively driven. Main shaft 4
When the transport body 3 is rotationally driven, the eccentrically inclined wheel body 3 also rotates at the same time, and the eccentricity of the wheel body 3 causes the amount of protrusion of the transport body 3 toward the cover sheet 14 to be periodically changed. Further, since the wheels 3 are inclined in opposite directions, the distance between the pair of wheels 3 at the contact portion with the cover sheet 14 is changed periodically. The combination of these two movements constitutes massage for the human body. If the drive shaft 5 is rotated instead of the main shaft 4, the rack 11 of the frame 1
The entire Matsusurf mechanism is self-propelled in the vertical direction as a backrest by the rotation guide of the pinion 18 and the traveling guide 19 that mesh with the pinion 18. This self-propelling movement causes the wheel body 3, which is the treatment element, to move, and by reciprocating within a certain range, the wheel body 3 rubs the back of the human body through the cover sheet 14. be. Furthermore, this massager') is equipped with a mechanism that allows the width between the pair of wheels 3 to be varied. This is composed of a feed screw 6 parallel to the main shaft 4 and the drive shaft 5, and a pair of connecting arms 25 that connect the feed screw 6 and the inner ring 20 of each wheel body 3. One end of the thread 6 is a right-hand thread and the other is a left-hand thread from the center in the axial direction, and a connecting arm 25 has one end screwed into each thread. The north end of both connecting arms 25 is connected to the inner ring 20 of each wheel tree 3, and each inner ring 20 of both wheel bodies 3 is connected to the main shaft 4 so as to be slidable in the axial direction by, for example, a spline. The rotation of the wheel 6 causes the pair of wheels 3 to approach each other or move away from each other. In this embodiment, when the feed screw 6 rotates, the main shaft 4 is always rotating as described later, so the connecting arm 2
A thrust bearing 98 is disposed at the connection portion between the inner ring 20 and the inner ring 20, so that the connection can freely rotate. Further, regarding the movement of the two wheel bodies 3 in the direction in which the two wheel bodies 3 approach each other, the movement of the connecting arm 25 is transmitted to the wheel body 3 via the spring 97, so that, for example, the neck will not be pinched by strong force.

Next, the reduction gear device within the gearbox 27 will be explained.

The main speed reduction device is a planet (several structures) that performs differential speed reduction. A first outer ring 53 in which the large diameter portion of the planetary roller 52 is inscribed, and a second outer ring 53 in which the small diameter portion of the planetary roller 52 is inscribed.
It is composed of an outer ring 54 and a retainer 55 as a planetary carrier that supports the planetary rollers 52. First outer ring 53
The second outer ring 54 is engaged with a gear 57 and a gear 58 supported by a pongee 56, respectively, and a gear 59 that rotates together with the gear 57 forms a clutch 9 as a torque limiter with the cylindrical body 62. The elliptical gear 63, which rotates together with the gear 58, is engaged with an elliptical gear 64 fixed to the main shaft 4.

Here, the main shaft 4 is connected via a pair of elliptical gears 63 and 64 so that when the amount of protrusion of the wheel body 3 toward the cover sheet 14 increases, the torque increases and the angular speed of rotation is slow. This is to ensure that the time required to press the human body becomes longer. However, in a lever, if the first outer ring 53 of the planetary mechanism 8 is locked so as not to rotate, differential rotation will occur in the second outer ring 54 due to the difference in diameter between the large diameter part and the small diameter part of the planetary roller 52. This rotation is transmitted to the main shaft 4, and conversely @2 outer ring 54
If the rotation is prevented, a differential rotation will be produced in the first transfer shaft 53 and transmitted to the drive shaft 5.

Next, a power transmission system to the feed screw 6 will be explained. The gear 58 provided between the planetary mechanism 8 and the main shaft 4
A connecting gear 61 for deceleration is engaged with the connecting gear 61, and an electromagnetic clutch 10 is further connected to this connecting gear 61. This electromagnetic clutch 10 housed in a gear box 27 includes an outer input hub 82 and an inner input hub 81 whose outer peripheral surfaces are gears and mesh with the connecting gear 61, and an outer output hub 84 and an inner output hub as output members. 83 and an electromagnet 87 consisting of a coil 88, a yoke 89, and a cylindrical iron core 90, a feed shaft that is rotatably supported by a bearing in the gear box 27 and connected to the feed screw 6 at one end. An inner output hub 83 is fixed to the inner output hub 80 , and an outer human power hub 8 is attached to one side of the inner output hub 83 in the axial direction.
2 and an inner input hub 81, and an electromagnet 87 on the other hand are each held freely rotatably on the feed shaft 80. Inner input hub 8
1 and the outer input hub 82 are press-fitted and fixed to each other so as to form a double cylinder shape, and a coil spring 8 is inserted between them.
6 arrangement spaces are formed. Further, the outer output hub 84 and the inner output hub 83 are integrally formed by a protrusion at one end of the outer output hub 84 engaging a notch provided in a flange formed at one end of the inner output hub 83 on the electromagnet 87 side. They are connected to each other so as to rotate. The inner peripheral surface of this outer output hub 84 and the inner +1tll output hub 83
A space is also provided between the fill spring 86 and the outer peripheral surface of the flange, and a ring-shaped space located at the front of the flange is provided between the two.8 This space is made of magnetic material. This is the arrangement space for the ring-shaped clutch shoe 85, and the electromagnetic force of the electromagnet 87
The clutch shoe 85 is brought into contact with the clutch surface on the front surface of the runno. Note that one end of the inner output hoop 83 having at least seven runs is formed of a magnetic phase to form a magnetic circuit, and the outer output hoop 84 is formed of a non-magnetic material. The coil spring 86 has one end engaged with the inner input cup 1b 81 and the other end engaged with the clutch shoe 85, and is connected to the outer input hub 82 and the inner input hub 8.
1, and a cylindrical gap extending over t between the outer output hub 84 and the inner output cup 83 and the placement base.

Now, in this electromagnetic flanch 10 configured as described above, when the electromagnet 87 is not excited, the clutch shoe 85 is not in contact with the clutch surface, and the coil spring 86 is in contact with the inner part of the outer output/% block 84. Since it is not in contact with the peripheral surface or the outer peripheral surface of the inner output/% hub 83, even if rotational power is transmitted from the connecting gear 61 that meshes with the outer human-powered hub 82 to the input hubs 82, 81. , only the coil spring 86 and clutch shoe 85 rotate together with these, but the output hubs 84, 83 do not rotate and are in a disconnected state. However, when the electromagnet 87 is energized to bring the clutch shoe 85 into suction contact with the clutch surface, there will be resistance to the rotation of the clutch shoe 85 to which the fill spring 86 is connected. 82,
8], its diameter becomes smaller or larger depending on the direction of rotation. When the diameter becomes smaller, the coil spring 86 wraps around the outer circumferential surface of the inner output hub 83 and transmits rotational power to the inner output hub 1b 83, and when the diameter becomes larger, it presses against the inner circumferential surface of the outer output hub 84 and rotates. Power is transmitted to the outer output hub 84. These output hubs 84
．． The rotation of 83 is taken out from the feed shaft 80 and the feed screw 6
Rotate.

Now, the part +4 for selectively blocking the rotation of the first outer ring 53 and the second outer ring 54 in the planetary structure 8 and switching the power of the motor M to the main shaft 4 and the drive shaft 5 is a single unit. This is a solenoid SQL and a braking mechanism 7 controlled by the solenoid SQL.This braking mechanism 7, which is housed inside the gearbox 2, has a shaft 29 inserted therethrough as shown in FIGS. fixed hub brake) 30,
A pair of fixed hubs 31.35 fixed to both sides of the fixed Hough plate 30 in the axial direction, a pair of movable hubs 32.3G supported by the shaft 29 and aligned in the axial direction of each fixed hub 3], 35,
A pair of left and right outer circumferential collars 33.37 and an inner circumferential collar 34.38, which are interposed between the outer circumference and inner circumference of each movable hub 32, 36 and the fixed hubs 31, 35, respectively, and the fixed hub 31.35 and each movable A total of four fill springs 4], 42, 43, 44, and the fixed hub 31 are arranged so as to be in contact with the inner circumferential surface and the outer circumferential surface of the hub 32, 36, and the fixed hub 31.
, 35, a pinion 40 is supported by a connecting shaft 39 and connects each internal gear part 46 and gear part 47 of the outer collar 33, the inner collar 34, the outer collar 37, and the inner collar 38. , and both outer peripheral collars 33 and 37 are arranged in a direction perpendicular to the axis 29.
One movable hub 32 is connected to the main shaft 4 by meshing with the gear 58, and the other movable hub 36 is connected to the main shaft 4 through the shaft 29 passing through each member and the gear 65. It meshes with a gear 57 and is connected to the drive shaft 5. Also, among the four coil springs, two coil springs 42° 44 located on the outer circumferential side and having different winding directions are connected to the fixed hub 31, 35 and the movable hub 32.
, 36, each one end is engaged with the engagement hole 48 of the fixed hub plate 30, each other end is engaged with the engagement part 49 of each outer circumferential collar 33, 37, and the inner circumferential side Two coil springs 41 located in different winding directions.
43 is a fixed hub 31.35 and a movable hub \732,3G
Each one end is connected to the engagement hole 48 of the fixed hub plate 30, and each other end is connected to each inner circumferential collar 32.3.
It is locked to the engaging part 49 of 8. Note that the winding directions of the fill spring 41 and the coil spring 42 are the same,
Further, the winding directions of the coil spring 43 and the coil spring 44 are also the same.

In this braking mechanism 7 configured as described above, when the solenoid SQL is in the returned state by the return spring 45, the inner peripheral surfaces of the movable hub 36 and the fixed hub 35 connected to the drive shaft 5 and As shown in FIG. 7(b), coil springs 43 and 44 are in close contact with the outer peripheral surface due to their own spring properties to prevent rotation of the movable hub 36 in each direction, and are also connected to the main shaft 4. Movable hub 3
2 and the fixed hub 31, as shown in FIG. The movable hub 32 is further wound in the winding direction by the inner collar 34 which is rotated by the force of the return spring 45 in the opposite direction to the outer collar 33, so that the diameter of the movable hub 32 is reduced.
Since they are separated from the circumferential surface of the fixed hub 31, they are disconnected from each other. Therefore, the movable hub 32 connected to the main shaft 4 is in a free state.

That is, at this time, the rotation of the motor M is transmitted to the main shaft 4 after being decelerated by differential deceleration by the planetary mechanism 8. And when the solenoid SO'L is activated, the seventh
Both the outer collars 33 and 37 rotate in the direction shown by the arrow in the figure, and the inner collars 34 and 3 are rotated via the pinion 40.
8) rotates downward, filling springs 41, 42° 43. with each movable hub 32° 36 and fixed hub 31.35.
In order to reverse the connection by 44 to the above case, the main shaft 4
The rotation of the movable hub 32 connected to the motor M is locked, and the differential deceleration output of the motor M is transmitted to the drive shaft 5. In this braking mechanism 7, both movable hubs 32.
36 is connected to the planetary mechanism 8, the main shaft 4, and the drive shaft 5 at one end in the axial direction, thereby consolidating the arrangement of the braking force transmission system.

Also, as is clear from FIG. 7 (1), in this case, the coil springs 41, 42, 43 are in a free state and prevent the movable hubs 32, 36 from rotating.
゜44 is designed so that the engagement between these and each collar 33, 34, 37, 38 has some play, and the thread/id S
Since the rotation lock is not released until more than half of the stroke in the OL has elapsed, a situation occurs in which the rotations of both movable hubs 32 and 36 are locked together in the middle of switching. .

This is because the wheel 3 rotates due to human power from the load side during switching.
This is to prevent any stiffness or movement. - When the power is turned off, the cylinder is in the same state as when the solenoid SQL is not energized, that is, the movable hub 36 connected to the drive shaft 5 is locked. The pine surge mechanism does not descend under its own weight.

However, if this massager is subjected to an excessive load such as when dropping a rock, the clutch 9 will slip and the pine surge mechanism will lower to absorb this load. It is. In other words, this clutch 9 is attached to the cylindrical body 62 freely and slidably in the axial direction.
It is composed of the gear 60 which is bent, a meshing plate 91 fixed to the cylinder body 62, and a spring 92 that biases the gear 60 and the meshing plate 91 in the direction of meshing, and prevents excessive loads in the vertical direction. When this is applied, the gear 60 and the meshing plate 91 disengage and the cylinder body 62 rotates despite the braking by the braking mechanism 7. The clutch 9 incorporates means to enable manual vertical movement when vertical movement becomes impossible due to some kind of failure. This is a release plate 93 that is in contact with the other surface of the spring 92, and in the event of a failure, the release plate 93 is pulled out once and the spring 92 is moved back, removing the force that presses the gear 60.
And the drive shaft 5 is rotated, that is, the pine surge mechanism can be moved up and down. Reference numeral 94 denotes a guide plate for holding the release plate 93, and this also serves as a guide when the release plate 93 is inserted again.

[Effect of the invention 1 As described above, the present invention utilizes the characteristics of the planetary mechanism, and also applies braking to one of the two outputs of this planetary mechanism and transmits the output of the other to the treatment element. Braking of tfi <N can be achieved by selectively applying braking to both outputs of the planet (a number of units) using a single control input using a coil spring, and this braking acts in accordance with bidirectional rotation. Since it is constructed from a single piece, it is compact and capable of controlling large torque.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a cutaway plan view of the same, Fig. 3 is a cutaway rear view of the same, Fig. 4 is a side view of the same, and Fig. 5(a). (b) is a vertical cross-sectional view and a cross-sectional view of the same braking mechanism as above, FIG. 6 is an exploded perspective view of the same braking mechanism as above, and FIG. It is a cross-sectional view seen from different directions, and 3 is a wheel as a treatment element, 7 is a braking mechanism, 8 is a planetary mechanism,
29 is a shaft, 31.35 is a fixed hub, 32.36 is a movable hub, 33.37 is an outer collar, 34.38 is an inner collar, and 40 is a pinion. Agent Patent Attorney Ishi 1) Chief 71!4 Figure 5 Figure 7 (0) (b)

Claims (4)

[Claims] (1) A planetary mechanism is arranged between the drive source and the treatment element, and one of the two outputs taken out from the planetary mechanism is braked, and the other output is transmitted to the treatment element, and the cylindrical A fixed hub, a movable hub connected to each output of the planetary mechanism and arranged on both sides of the fixed knob in the axial direction, and an inner circumference and an outer circumference extending between these fixed knobs and each movable hub. two pairs of braking fill springs arranged as a pair each exerting braking force in different directions, and an outer peripheral collar arranged on the outer periphery of each fill spring located on the outer periphery;
It is composed of an inner collar arranged on the inner circumference of each coil spring located on the inner circumference, and one movable knob is braked by the coil spring driven by control human power that rotates the outer circumference collar and the inner circumference collar. An output switching device for a pine surge machine, characterized in that it is equipped with a braking mechanism. (2) Claim 1, characterized in that the transmission member that transmits the control input from the outer collar to the inner collar is located axially intermediate between each pair of outer collar and inner collar that are arranged in the axial direction. Output switching device for the 77 surge machine described in Section 1. (3) The output switching device for a pine serge machine according to claim 1, wherein braking is applied to both movable hubs at an intermediate position of the stroke of the control input. (4) A claim characterized in that one movable hub is fixed to one end of a shaft passing through the other movable hub, and the other end of the shaft is connected to one output of a planet (a number of planets). An output switching device for a pine surge machine according to item 1.