JPS6030222B2 - handheld purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hand-held purifier, and in particular to a hand-held purifier for cleaning the body such as teeth and oral cavity. motor and
a hollow shaft alternately driven by the hydraulic motor; a liquid duct connected to an external liquid pump for supplying liquid flow to the hydraulic motor; and at least one liquid flow adjustment for operating or deactivating the hydraulic motor. hand-held purifier including a valve for cleaning a toothbrush, spray nozzle, etc., which is replaceably attached to an instrument support and is supplied with liquid through a liquid duct; .

In conventional hand-held purifiers (as shown in DE 1802838, DE 2109005 and DE2109006), the hydraulic piston motor runs along the length of the device case. It is attached coaxially with the shaft or in the longitudinal direction.
During the operation of the hydraulic motor, its piston is driven to reciprocate in the axial direction of the device by the pulsating pressure generated by the liquid pump, and the instrument support is moved along its longitudinal axis by the motion transducer. to make an oscillatory rotational movement. The hydraulic motor is deactivated when a push-in spray nozzle is used, supplied through the liquid duct of the device. The motion converter is
For example, the drive tube is attached to a joint of a motor cylinder so as to be freely rotatable and not displaced in all axial directions, and has a helical groove provided in the peripheral wall. One end of the piston is introduced into the drive tube and supports a radial pin that engages a helical groove, thereby converting the movement of the piston toward the bag into an oscillatory rotation of the drive tube. A bush-shaped plug attached to one end of the turbulence tube serves as a receptacle for receiving cleaning equipment. The liquid duct in the device case for supplying liquid to the spray nozzle consists of, for example, an annular space surrounding the motor cylinder, an opening provided in the peripheral wall of the drive pipe, and a bush-shaped plug. It includes an internal space part that communicates with the inner space part. These conventional devices require multiple cooperating moving parts for the motion transducer, and their mechanical friction causes wear and reduces drive efficiency.

Furthermore, the inclusion of motion transducers complicates the supply pipe path for the spray nozzle of the device. The object of the invention is to eliminate the above-mentioned motion transducer and to provide an instrument support or
It is an object of the present invention to provide a hand-held cleaner of the type described above, which has a hydraulic motor of relatively simple construction, which can directly drive the shaft forming or supporting the support into oscillation.

In the purifier of the invention, the piston of the hydraulic motor is bent in the stroke direction and connected to a hollow shaft that is mounted on the device case and can rotate about its longitudinal axis.

The rotational axis of the hollow shaft passes through the center of a circle containing the curved piston axis, and is provided in a direction perpendicular to the plane of the circle. The piston is then subjected to the force of the return spring. According to the invention, the piston of the hydraulic motor is directly and substantially rigidly connected to the shaft supporting the instrument support, preferably by an arm formed on the outer end of the piston. There is the advantage that the drive mechanism includes only a single moving part and no piston center or guide is required in the motor cylinder.

Preferably, the motor cylinder is arcuately curved in the direction of the stroke like the piston, so that space can be saved and extra cylinder space can be avoided.

Also, the piston, which is surrounded in motion by the motor cylinder, is preferably sealed by a sleeve only at the end exiting the piston cylinder. The vibration system formed by the return spring, the piston and the shaft with the instrument support is at least 20 Hz, preferably about 40 Hz.
It operates at an oscillation frequency of ~60 Hz, allowing the liquid pump to have the capacity to accommodate it.

The vibration of the piston is further improved by the use of an elastic cradle that defines the rest position and maximum stroke of the piston, and under certain circumstances even high vibration frequencies of 100 Hz or more are possible. The motor cylinder may in principle be constructed linearly.

In that case, it simply needs to be large enough to curve and receive the piston. The return spring for the piston preferably consists of a torsionally loaded helical spring, which surrounds the shaft in the same D-circle, the tension of which can also be adjusted after assembly. The hand-held purifier according to the invention is adapted to be used alternately with a push-in toothbrush or a push-in spray nozzle driven by a hydraulic motor, and with an external liquid pump under appropriate valve regulation. The flow of liquid to be drawn off is provided through the hollow portion of the hollow shaft containing the instrument support.

Another feature of the invention is that the device support for supporting cleaning devices such as toothbrushes, spray nozzles, etc. is configured as a hollow shaft, the internal duct of which forms the liquid supply pipe for the spray nozzle. and the rear end of the hollow shaft is connected to the supply pipe section of the spray nozzle extending into the conduit by a flexible tube provided in the device case and able to move freely over at least a portion of its length. ing. A significant advantage thereof is that the instrument support or hollow shaft does not have to be attached to any sealing ring, and the shaft can freely and easily rotate in the substantially smooth shaft bore of the shell. It is sufficient. Also, this mouse hole can be made long enough for stable mounting. Long bearing holes are preferred since the driven toothbrush is subject to considerable pressure during use. Because a sealing ring is not required on the hollow shaft, all problems associated with sealing ring friction, aging, etc., as well as physical and chemical changes in the sealant due to the tacky toothbrush pen penetrating the ring, are eliminated. can avoid.

The easy movement of the shaft obtained in this way will result in a considerably improved oscillatory motion, so that the instrument support is driven with high efficiency. In addition, the use of hollow shafts and tubes for the supply pipes of spray nozzles simplifies the routing of liquid pipes within the device case.
Extra internal space in which air can be trapped is largely avoided.

The internal connecting tube is preferably made of a flexible material as well as
It is formed of a sufficiently elastic material so that it experiences some additional restoring force upon movement of the driven instrument.

Furthermore, the use of the above-mentioned materials provides similar advantages in the vibratory operation of the entire vibrating system. Other features of the invention will become apparent from the claims.

The invention will be explained in detail by means of two structural embodiments using the drawings. FIG. 1 is a longitudinal cross-sectional view of the case of the hand-held tooth and oral cavity cleaning device of the present invention having a push-in toothbrush attached to a hydraulic motor; A push-in toothbrush 2 is attached to the device case as a part, and the rear end 5 of the case
It includes an outer frame tube 4 and a crab body 6 which are closed with a tube. This paddle body 6 is firmly inserted into the front part of the outer frame tube 4 and has two communicating tubes 7 and 8 forming a flexible connection forming a liquid inlet pipe and a liquid outlet pipe, respectively. These tubes (not shown) connect the case of the device to a liquid pump, which is also not shown and is for pulsatile injection of liquid. A circular flange 9 is attached to the front end of the body 6, and a removable cover cap 10 is fixed to the flange 9 with a holding force.

The central open row 2 of the weight body 6 has a hollow shaft 13 therein.
The shaft 13 is rotatable in both directions about its long axis, and the front end 14 of the shaft 13 protrudes through the central hole 11 of the cover cap 10 and can freely rotate. The front end 14 of the hollow shaft 13 is equipped with a toothbrush or a spray nozzle 3 shown in FIG. 1a.
The contour is such that it can be pushed around the shaft 13 and stopped. The hollow shaft 13 thus forms a holder for the instrument. The rear end of the cliff body 6 adjacent to the hollow shaft i3 is attached to a hydraulic motor 5.

The motor 15 will be described below with particular reference to FIGS. 2 and 3;
The piston 17 is directly or non-rotationally connected to the hollow shaft 13 and drives the hollow shaft 13 to oscillate about the shaft. Liquid ducts 25 to 29
is provided in the main body 6 in the same way as the three-way valve 30 and the shutoff valve 31, which function as changeover valves.

The duct 25 connects the introduction pipe 7 of the bonito body to the introduction pipe 23 of the hydraulic motor 15. Also, the duct 26 is connected to the hydraulic motor 5
The outlet pipe 24 is connected to the duct 27. The duct 27 extends perpendicularly to the device case beyond the central bore 12 to the inlet of the valve 30. A duct 28, which is provided parallel to the duct 27, connects the outlet of the valve 30 to the outlet pipe 8 of the device case and to the liquid discharge pipe. A short duct 29 connects the other outlet of the valve 30 to the inlet of the isolation valve 31. A flexible tube 33 made of an elastic material is substantially freely movable within the outer frame tube 4,
The outlet tube 32 of the valve 31 is connected to the rear end of the hollow shaft or to the connecting tube 34, and clips 5 are attached to the tubes 32 and 34 to complete the sealed connection at the ends of the tubes, respectively.
2 and 53 are stopped. An internal duct 35 of the hollow shaft 13 terminates at the front end 14 of the shaft and is connected to a tube 33.
Together with a short duct 29, it forms a liquid supply pipe for the spray nozzle 3 pushed into the front end of the shaft 13. Valve 30 allows this handheld device to be turned on and off during operation of the liquid pump. For this purpose, the valve plunger 36 is adjustable by means of an external tank fluid 38 projecting outwardly through an elongated slot 41 in the outer tube 4 together with a valve head 37 forming a sealing village. In the position of the valve 30 shown in FIG.
That is, the other valve 31 and the supply pipe are cut off, while the duct 27 is connected via the ring 40 to the duct 28 and thus to the liquid discharge pipe to the liquid pump. The apparatus will be in an idling operating position, as will be described below with reference to FIG. When the slide 38 is pushed forward with the valve plunger 36, the valve head 37 engages snugly within the o-ring 40, blocking the liquid discharge pipe and IJ-raising the short duct 29 into the valve 31. This valve 31
It also includes a valve plunger 42 having a valve head 43 forming a seal and cooperating with an O-ring 44.

The valve plunger 42 is connected to the opening 4 of the cover cap 10.
It has an activation pin 45 which projects forwardly through 7 and is positioned as shown in FIG. 1 by means of a helical spring 46.
In FIG. 1, a valve head 43 tightly engaged within an O-ring 44 isolates the inlet from the tube 33 or hollow shaft 13. In this position, when the valve 30 shuts off the liquid discharge pipe, the hydraulic motor 15 is activated, thereby causing the push-in toothbrush to move oscillatingly. When the activation pin 45 is pushed against the spring 46 and the valve head 43 is separated from the o-ring 44, the inner duct 35 of the tube 33 and central shaft
The route to is a barrier, and the spray nozzle 3 can be supplied. The two operating states of the device described above will be explained in more detail with reference to FIGS. Hollow shaft 13 from lotus body 6
In order to completely seal the outlet of the elements and at the same time ensure the necessary movement of these elements, two truncated conical sealing tubes 48, made of flexible material, for example rubber, are provided.
49 are provided, the front ends of which connect the hollow shaft 13
and the outer periphery of the active pin 45 are firmly fixed.

These rear end portions strongly secure the space between the barb body 6 and the flange 9. Both sealing tubes 48 and 49 may be made of one piece, as shown in FIG. 1, for example, or they may be made of separate pieces. Since the hollow shaft 13 is connected to the fixed weight body 6 by a movable tube 33,
No sealing between the hollow shaft and the oath 6 is necessary.

Especially since the hollow shaft has to rotate ○−
Rings are also not required, thus avoiding frictional losses associated with shaft mounting. The axial displacement of the hollow shaft 13 is limited by the front projection 50' as well as the rear drum ring provided on the hollow shaft 13, which is approximately 0.
．． It has a tolerance of 3 skins or less. Referring to FIG. 3, the hydraulic motor 15 includes a piston 17 and a motor cylinder 16 surrounding the piston for large movements, both curved in an arc in the direction of stroke.

These bending axes are located on the same 0 circle as the long axis of the hollow shaft 13. A flange 18G attached to the open end of the cylinder supports a ring 19 that seals the piston 17. Although the piston 17 does not rotate, it is attached to the hollow shaft 13 by an arm 20 and a sleeve 21 formed on the shaft so that it can be easily displaced in its axial direction. The hollow shaft 13 further includes a sleeve 2 into which the shaft is pushed.
1 includes a longitudinally extending rib 22 that engages an axial groove in the inner circumferential wall of 1. The movement of the piston 17 in the direction of the ball is
In relation to the motor cylinder 16 it is automatically oriented toward its center, so that when the shaft 13 is moved towards its bag by using a toothbrush or pushed backwards by contact pressure, the cylinder Pressure on one side of the O-ring 19 and an oblique position of the piston can be avoided. In this way, the movement path and position of the piston 17 are determined by using special center positioning members and guide members to slide and install it on the hollow shaft 13, and with sufficient accuracy. The inlet opening and outlet closure of the motor cylinder 16, respectively formed by the inlet and outlet pipes 23 and 24, are adjacent to each other at the end in the cylinder remote from the outlet end of the piston, as shown in FIG. or at least substantially diametrically opposed.

Naturally, these may also be provided on or within sections of mutually opposite cylinder ends. The inlet and outlet ports are connected together at all positions of the piston, and in particular, even in the rest position of the piston 17 shown by the solid line in FIG. In this way, the motor cylinder 16
forms part of the liquid pipe extending into the housing 6 between the ducts 25 and 26, so that the piston 17 is always in liquid even when the liquid pump is idling or when supplying the spray nozzle. O) So it's wet. Similarly, the possibility of air bubbles forming in the hydraulic motor 15 is also eliminated. This is important for complete starting of the hydraulic motor when the duct 27 is closed by the valve 30. Tubes 23 and 24, which are arranged parallel to each other and at right angles to the direction of stroke of the piston, are "pressed into a suitable opening in the lotus part 6 in order to easily attach the motor cylinder 16 to the lotus part 6. There is.

The return spring for the piston 17 is a helical spring 54 torsionally loaded and concentrically surrounding the hollow shaft tortoise 3, with a sleeve rigidly mounted on the hollow shaft 13 to facilitate centering. 59 is wound on top. This sleeve 59 has grooves in all axial directions, and is attached so as to be engaged with the grooves at the rear end of the rib 22 in the most axial direction of the hollow shaft 13 so as not to rotate. The spring extractor 55 is bent radially and extends from the front flange 5 of the sleeve 59.
Attachment member 5 formed by a radial projection at 9a
8 in a radially oriented groove 57. Flange 59a has a ring-shaped groove for receiving the front part of the spring. The rear end 56 of the spring, which is also bent in the radial direction, is attached to the lotus body 6 or the motor cylinder 16.
Attachment member 60' formed on jointed arm 62
It is attached so as to resist displacement in the circumferential direction. The mounting member 6 surrounds a helical spring 54 with no tension in the initial stage in an arch shape around its outer periphery, and is spaced apart from each other at a certain angle. a plurality of radially extending grooves 6 into which can be selectively inserted;
1 on the rear side away from the front of the spring. In this way, the initial or torsional tension of the spring is reduced by the radial groove 61 for receiving the spring end 56.
By selecting an appropriate value, adjustments can be made easily even after assembly.

This avoids the hassle of having to accurately select the length and characteristics of the helical spring to be used prior to assembly. The stroke of the piston 17 is controlled by a stationary cradle 63, 641, preferably formed of rubber cushioning material, to eliminate noise and harsh piston shocks.
This limits both directions. A cradle 63 (FIG. 2) mounted on arm 62 cooperates with mounting member 58 and determines the rest position of piston 17, shown in solid lines in FIG. Referring to FIG. 3, the cradle 64 attached to the bell body 6' determines the maximum operating stroke of the piston 17, shown in dotted lines, and essentially defines the safety limits. During normal operation of the motor, the motor does not come into contact with the piston, nor does it come into contact with the piston even when there is no load on the motor or, at most, when the load is light. During unloaded operation of the device or when operating with the spray nozzle 3 installed, the force holding the piston 17 in the rest position shown in FIG. 3 is sufficient to eliminate movement of the piston due to pulsating liquid. The tension of the helical spring is determined in advance. During operation of the hydraulic motor 15, the operating stroke of the piston 17 is caused by a pressure pulse produced by the liquid pump against the spring 54, and at the end of the subsequent pressure pulse, the piston is returned again by the spring to its rest position. In this example, the maximum operating stroke of piston 17 is approximately 600 degrees with respect to spring end 56 and the piston of FIG. Figures 4, 5 and 6 schematically illustrate three operating states of the hand-held device.

Furthermore, a liquid pump P and a water reservoir R are shown diagrammatically in FIG. The outlet of the pump is the liquid supply pipe 70'
This is connected to the introduction pipe 23 of the hydraulic motor 15, and on the other hand,
The outlet pipe 8 of the device case (FIG. 1) terminates in the liquid reservoir R or at the inlet of the pump P and is connected to a liquid discharge pipe 71.
It is connected to the. According to Figure 4, valve 3 rivers OF
F-position, in which position the hydraulic motor 5 is inlet and exit pipe 23 via the cylinder chamber.
, 24 In other words, the liquid supply pipe 70 is connected to the liquid discharge pipe 71 via the ducts 27 and 28 of the case portion 6 shown in FIG. Since the pump circuit is thus short-circuited by the case of the device in the direction of the arrow, virtually no pressure is created in the liquid system and the hydraulic motor 5 does not operate. The liquid generated by the pump also flows into the reservoir R or returns to the inlet of the pump. At the same time, the hydraulic motor in the liquid system, especially in the liquid pipe, does not contain air. According to Figure 5,
The valve 30 is in the ON- position, in which the liquid discharge 71 is blocked.

Due to the influence of the spring, the valve prevents the connection to the pipe 33.
Since the liquid flowing from the pump to the hydraulic motor 5 through the supply pipe 70 cannot flow out, it drives the hydraulic motor 5, whose piston 17 is moved back and forth by the pulsating rhythm of the liquid and the restoring force of the spring 54. Become. The push-in toothbrush mounted on the driven hollow shaft 13 therefore oscillates about its longitudinal axis in the direction of the arrow in FIG. There is virtually no liquid loss except for leakage losses. The liquid present in the liquid pipe between the pump and the hydraulic motor 15 simply swings back and forth.
In this way, the pump P essentially carries out the pressure transmission in this case. When the hydraulic motor 15 is in operation, the liquid pump, external line, hydraulic motor and flowing liquid together with all mechanically moving parts form a vibrating system, which is under load. "In order to obtain sufficient efficiency and piston stroke of the hydraulic motor, it must be operated at least near its resonant frequency, so that the toothbrush 2
vibration is sufficient. Various factors for determining the resonant frequency of this oscillating system and thereby properly adjusting the system are the springs 54 and, to a lesser extent, their material being not only cohesive but also preferably sufficiently It is also an elastic tube 33. helical spring 54
In addition to the returning force of
Although it is small, it will have an impact on 3. If the oscillating system is to be substantially coarsely tuned by appropriate selection of factors which determine the resonant frequency but will not be described in detail here, the adjustment can be carried out in a simple manner by means of the helical spring 54 together with the tube 33. This can be done after the parts have been assembled, which is a great advantage. As previously mentioned, the torsional force of the helical spring 54 can be varied by choosing a suitable groove 61 for the spring end 56, while the restoring force by the tube 33 is simply a function of the size of the tube, particularly its length. It can be changed by changing it. This is also another advantage. Furthermore, in order to prevent the vibration amplitude of this vibration system and therefore the stroke of the piston 17 from increasing significantly when the hydraulic motor is unloaded, that is, when the toothbrush is not pressed against the teeth, compared to when the hydraulic motor is loaded, the vibrating part is It is important to provide damping with an appropriate size.
This necessary damping can be easily generated by the sacrificial sleeve 48, which is twisted back and forth during vibrations of the hollow shaft 13, by selecting the thickness and size of the material. In this way, the vibration amplitude of the system when the hydraulic motor is unloaded, and therefore the stroke of the piston 17, is up to 30% greater than when loaded. cradle 6
4 (Figure 3). Referring to FIG. 6, the valve 30 is again in the ON-position, while the valve 31 is connected to the pipe 33 through the cylinder chamber of the hydraulic motor 15 so that the liquid supply pipe 70 is connected to the internal duct 35 of the hollow shaft 13. is displaced by the push-in spray nozzle 3 to a position such that it is connected to the spray nozzle 3.

To this end, as shown in FIG. This is coupled with the activation pin 45, and the pin 45 and therefore the valve spring 46. When the plunger 42 is fitted with the spray nozzle 3, the spring 46 of the valve
so that it is pushed inward and displaced against the Thus, in this position, the hydraulic motor 15 is inoperative and there is sufficient initial tension in the helical spring 54 to prevent piston movement due to the pulsating liquid influence. Since the spray nozzle 3 is connected to an external liquid pump, a pulsating liquid jet is performed from the spray nozzle in the direction of the arrow in FIG. The user does not need to pay any attention to the valve conversion to change from "brush action" to "spray nozzle action". This is because, as mentioned above, this conversion occurs automatically when the spray nozzle is installed. If the spray nozzle is removed, the valve 31 will be removed due to the valve spring 46.
As shown in FIG. 5, it automatically returns from the "brush action" position. The rear end of the push-in toothbrush 2 is structured so that it does not come into contact with the activation pin 45 at the pushed-in position. Direct oscillatory drive of the hollow shaft when the toothbrush is attached not only avoids friction and wear occurring during the interlocking transformation, but also allows the oscillating system to contain essentially only one common moving part. It vibrates freely due to impact, etc.

Furthermore, the mechanical parts are simple and therefore inexpensive, so that the hand-held device can be manufactured inexpensively, and the motor cylinder and the piston with the mounting sleeve can be made of inexpensive synthetic resin materials. Finally, the drive shaft consists of a hollow shaft and directly constitutes a straight liquid supply pipe with the same circularly extending spray nozzle in the longitudinal direction of the handheld device, so that Simple and direct guidance of the liquid is obtained, and so-called wasted spaces and associated air inclusions are avoided.

Figure 7 at Figure 7 b "Referring to Figures 8 and 9,
Another structural embodiment of the device is shown, in which the hand-held device includes a long device case 101 and a weight 186;
Among them, although not described in detail here, there is a valve which corresponds to the three-way valve 301 in the first embodiment and has an external activation element 138, and a valve which operates as a conversion valve and which corresponds to the three-way valve 301 in the first embodiment. A corresponding shutoff valve 131 is provided.

In this example, valve 131 is placed generally opposite the three-way valve in the dimple direction. The hollow shaft turtle 13 is a weight body 10
It is provided in the central hole of 6 and consists of an internal metal tube 175 made of stainless steel and a synthetic resin cover 176 made of, for example, acetate resin.A metal sleeve 177 is pressed over the part that is to serve as a bearing. There is. The rear connecting tube 134 of the hollow shaft 113 is connected to the tube 13 of the conversion valve 131 by means of a freely movable tube 133 that is maneuverable.
Connected to 2. The front end of the hollow shaft 113 carries a sleeve-like member 178 for stopping the front end of the elastic sealing tube 148, and also a stop for attaching a push-in toothbrush 102 or spray nozzle 103 (FIG. 8). 14 at the front. A flange 109 is attached to the front end of the body 106, and this flange 09 fixes the rear end of the sealing tube 148 to the body 106, and a cover cap 110 is mounted on the flange 109.
is installed. Inside the cover cap 110,
A cap-shaped slide village 180, which is freely movable in all axial directions, is mounted on the guide pin 179 of the flange 109. As shown in FIG. 7b, the activation pin 145 of the conversion valve 131 is engaged with the internal entrance of the sliding member 180,
Although the sliding part 18 does not engage with the plug of the push-in toothbrush 102 (Fig. 7b), when the spray nozzle 103 is attached, the protrusion 103b extends rearward in the axial direction of the nozzle plug. Activated by pin 14
5 will be displaced and pushed backwards (Figure 8). As shown in the first embodiment, when the spray nozzle 103 is installed, the conversion valve 131 is displaced against the valve spring 146 and held in a position such that the hydraulic motor 15 supplies liquid. This displacement is effected by the sliding member 18 so as to supply liquid to the spray nozzle. In this example, the activation pin 145 is located outside the sealing tube 148 and is sealed by an O-ring 149. Curved cylinder 1 of hydraulic motor 15
16 is made of synthetic resin and is attached to the cliff body 106.

In this case, it includes a single vertical supply pipe 123 at the rear of the cylinder, connected through a single duct to a liquid introduction pipe in the coating body, which corresponds to duct 27 in FIG.
Thus, the outlet tube 24 and duct 26 of FIG. 1 are omitted. It is sufficient that the cylinder 116 is connected through a single pipe to the supply pipe from the external liquid pump. In the example shown in FIG. 1, this leads from the case connecting pipe 7 to the three-way valve 30, forming a duct. It can be seen that even in such a simple configuration, the hydraulic motor operates perfectly and there is virtually no air-containing part in the cylinder or in the supply pipe. Pipe 7 in Figure 1, similar to the communication duct extending into the cliff.
, 8, and like the three-way valve corresponding to valve 30' in FIG. 1, the case connection pipe to the motor cylinder and conversion valve 131 is not shown in detail in FIG. 7b. One case connection tube 107 is shown in FIG.

A circularly bent motor piston 117, consisting of a metal pin with a curved circular cross-section, is configured to move within the cylinder 116, and is similar to the example shown in FIG.
It is sealed by a sealing tube 119 attached by a flange 118 fixed to the cylinder. The outer ring of the metal piston 117 is embedded in a synthetic resin component, for example polyester reinforced with glass, which component has an attachment 181 extending parallel to the hollow shaft 113 (FIG. 7a). radial arm 1
20 and on the hollow shaft 113, forming a fixed sleeve 121, which is mounted non-rotationally on the hollow shaft 113 and can be easily displaced axially thereon by the self-centering alignment of the piston described above. Referring again to the first embodiment, the longitudinal ribs 122 provided on the synthetic resin cover 176 of the hollow shaft 113 engage in corresponding grooves in the longitudinal direction of the inner circumferential wall of the sleeve 121. As shown in FIG. 7a, the fixed sleeve 121 supporting the piston is relatively elongated in the serpentine direction, allowing the piston to slide easily. When the piston is lowered, the metal piston 11
7 has a transverse hole 183 (FIG. 7a) through which the synthetic resin passes, obtaining a particularly stable connection. Attachment 181 of the plastic component is surrounded, in the internal position of the piston shown in FIG. 9, by a rubber cushion 182, which contacts the cradle 118 of the case and thereby determines the rest position of the piston. In this example, the maximum stroke of the 450 piston is determined by the resilient stationary cradle forming the rubber cushion 164 on the case pin 184. Piston arm 12 collides with a buffer in the circular plane determined by the curved piston to prevent tilting of the piston that may occur when the piston rests on the cradle. located on or at least on a generally curved longitudinal extension of the piston axis. The maximum displacement of the piston supported by the rubber buffer 164 is indicated by the dash-dotted line in FIG. The case pin 184 is formed in an inner case part 185 which on the one hand partially surrounds the tubular attachment of the pupil body 106 which receives the valve body of the valve 131 and on the other hand supports the return of the piston 117. It includes a cup-shaped attachment 160 (FIG. 7a) for attaching the stationary end 156 of the helical spring 154 which forms a spring and movably surrounds the hollow shaft 113 and fixed sleeve 121. Radial groove 161 in mounting member 160 for attaching radially bent spring end 156
is engaged with. The other radially similarly bent end 155 of the spring is connected to the hollow shaft 113 and secured to a mounting village 158 having a radial groove 157 engaged with the spring end 155.

This mounting member T-58 is located on a sleeve 159 which surrounds the sprocket IJ ring 154 like a cup and is pressed onto the rear end of the hollow shaft 113. The longitudinal ribs 122 of the shaft 113 are inserted into corresponding grooves provided in the inner circumferential wall of the sleeve 159. Attachment village 158 includes an axially rearwardly extending ring flange having an internal projection 186 on its inner periphery that engages peripheral projection 187 of sleeve 159 . Smooth periphery 1
88 is provided at the rear. A flange 189 for more securely mounting the tube 133 on the connecting tube 134 of the hollow shaft 113 engages in a smooth rear portion of the inner circumference of the attachment member 158. The above-described fixing structure of the spring end 155 allows the initial tension of the helical spring 154, which is subjected to a torsional load during operation, to be easily adjusted after assembly, and the internal protrusion turtle 86 can be easily adjusted with the flange 189 removed. The hollow shaft 1 is compressed until the spring 154 is released from the protrusion 187 of the sleeve 159.
The mounting member 158 is displaced forward over the mounting member 13 with the spring end 155 engaging the groove 157.
8 is carried out in such a way that the torsion is rotated in one direction or the other by one or more of the projections corresponding to a change in the initial tension. Thereafter, the attachment member 158 need only be returned to its normal position as shown in Figure 7a, in which it is fixed non-rotationally on the hollow shaft 113 by engaging the associated projection. It turns out.
According to the above-described hand-held device of the present invention, during operation, the piston 117 of the hydraulic motor 115 elastically contacts the cradle that determines its stroke with a somewhat larger force, and noise can be suppressed. The structure is designed to improve free vibration movement against shock.

If the external liquid pump is properly selected in its capacity, a motor piston with a hollow shaft or a driven instrument will
Preferably between 40 and 60 HZ, at least 20 days 2
It is made to vibrate at a frequency of . If the electric motor that agitates the hydraulic motor has a speed of, say, 300 revolutions per minute, the toothbrush is
It is driven at a speed of 0Hz. This is particularly advantageous for gum massage. The function of the hand-held device and valve described above is similar to the first structural embodiment described with reference to FIGS. 4-6.

[Brief explanation of drawings]

FIG. 1 shows a longitudinal section of an embodiment of the present invention,
Diagram when a push-in toothbrush is attached, Figure 1a
1 is a cross-sectional view of the spray nozzle used in place of the toothbrush in the embodiment of FIG. 1, FIG. 2 is a sectional view taken along the 0-RO line of FIG. m-m
A cross-sectional view along the line, Fig. 4 is a diagram explaining the operating state of the device during idling, Fig. 5 is a diagram explaining the operating state of the device when driving a toothbrush, and Fig. 6 is a diagram explaining the operating state of the device when driving a toothbrush. Figures 7a and 7b are longitudinal cross-sectional views of another embodiment of the present invention when a push-in toothbrush is attached, and Figure 8 is a spray nozzle. FIG. 9 is a cross-sectional view of the front section of the device when the device is attached, and FIG. 9 is a cross-sectional view taken along line K--K in FIG. 7a. Explanation of main symbols 1,101・・・Device case,
2,102...Toothbrush, 3,103...
Spray nozzle, 4,104...Outer frame pipe, 6,10
6... cliff body, 7... inlet pipe, 8... outlet pipe, 10,110... cover cap, 13,113
...Hollow shaft, 15...Hydraulic motor, 16,1
16...Cylinder, 17,117...Piston, 1
9,119... sealing material, 20,120...
...Arm, 21,121...Sleeve, 22,122
...Rib, 30..."Three-way valve, 31...
Shut-off valve, 33,133...Facility/sexual canal, 48,
49,148...Sealing tube, 54,154...Spring, 45,145...Activation pin, 180...
...Sliding material. ○Mountain d ○Mountain FIG. 2 FIG. 3 FIG. 5 FIG. 6 FIG-mu〆'6.8 〆'6.3 〃G. Q F'a.

Claims (1)

[Scope of Claims] 1 A hydraulic motor, a hollow shaft periodically driven by the hydraulic motor, a liquid duct connected to an external liquid pump for supplying liquid flow to the hydraulic motor, and a liquid duct connected to an external liquid pump for supplying liquid flow to the hydraulic motor. a device case as a grip portion having at least one valve for regulating the liquid flow to activate or deactivate the motor; and a cleaning device such as a toothbrush or a spray nozzle replaceably attached to the hollow shaft. A hand-held purifier comprising:
The piston 17; 117 of the hydraulic motor is curved in an arc shape in the stroke direction of the piston, and the hollow shaft is provided in the device case 1; 101 and is rotatable in the longitudinal direction of the curved axis of the piston. 13; 113, the axis of rotation of the hollow shaft passes through the center of a circle containing the long axis of curvature of the piston and is perpendicular to the plane of the circle, and the piston 17; A hand-held purifier characterized in that it is biased by a spring 54; 2 The piston 17; 117 and the spring 54
the system driven by said piston together with 154 has a frequency of at least 20 Hz, preferably between 40 Hz and 60 Hz;
2. The hand-held cleaner according to claim 1, wherein the hand-held cleaner is configured to constitute a vibration system having a vibration frequency of Hz. 3. The cylinder 16; 116 of the hydraulic motor is curved in an arc shape in the stroke direction of the piston 17; at least one encapsulant preferably sleeve 1
19 and said cylinder 16;
2. A hand-held cleaner according to claim 1, wherein the introduction opening 23; 123 of 116 is provided in the vicinity of the end within the cylinder. 4 The spring is connected to the hollow shaft 13;
a spiral spring 54; 15 concentrically surrounding the
4, one end 55; 155 of said spring is non-rotationally attached to said hollow shaft, and the other end 56; 156 of said spring is fixedly attached, preferably both ends of said spring are radially The mounting member 58; 158 or 60; 160 is inserted into the radial groove 57; 157 or 61;
The hand-held cleaner according to claim 1, 2, or 3, wherein one end of the spring is fixed to the casing and the other end is non-rotatably fixed to the shaft. . 5. To adjust the initial torsion force of the spring 54, one of the mounting members 60 is attached to the spring end 5.
5. The hand-held type according to claim 4, further comprising a plurality of grooves 61 extending in the radial direction and provided at a predetermined angle, into which the grooves 5 can be appropriately and selectively inserted. Purifier. 6. Said mounting member 158 is arranged on a sleeve 159 which is cup-shaped and has an internal projection 186 and has a peripheral projection 187 rigidly connected to said shaft, and said member has two sets of The projections are non-rotatably mounted on the sleeve by engagement of the projections and rotated and pivoted on the sleeve by disengaging the projections to adjust the initial torsional force of the spring 154. 5. The hand-held purifier according to claim 4, wherein the hand-held purifier is displaceable in a direction. 7. Claim characterized in that the piston 17; 117, which is non-rotationally arranged on the hollow shaft 13; A hand-held purifier according to any one of items 1 to 6. 8. A radially extending arm 20; 120 is attached to the outer end of the piston 17; 117, on which a sleeve 21; 121 is formed which is pushed into the hollow shaft 13; 113; Preferably an axial rib 22; 122 provided on said hollow shaft.
8. The hand-held cleaner according to claim 7, wherein the sleeve is inserted into and engaged with an axial groove in the inner circumferential wall of the sleeve. 9. The piston 117 is a curved metal pin,
9. A hand-held purifier according to any one of claims 1 to 8, characterized in that it is made of synthetic resin material and has an arm and a sleeve formed thereon. 10. The rest position and the maximum stroke of the piston 17; 117 are preferably determined by an elastic cradle 63; 64; 163 or 182, 164, such as a rubber cushioning material. Items to 9th
A hand-held purifier as described in any one of the following paragraphs. 11. The hand-held type according to claim 10, characterized in that the pedestal 64; 164 that determines at least the maximum stroke is provided within the plane of a circle on the extension of the curved piston shaft. Purifier. 12. the cleaning device is a push-in spray nozzle, the spray nozzle being supplied with a pulsating liquid flow directed by the external liquid pump by a liquid supply pipe terminating in the hollow shaft; The hydraulic motor and the spray nozzle are selectively actuated by a valve regulating the liquid flow, and the hollow shaft 13;
The internal duct 35; 135 of 113 forms part of the supply pipe to the spray nozzle 3; 103,
The internal duct of the hollow shaft is preferably connected at its rear end by a connecting tube 34; 134 and a flexible tube 33; 133 to the housing 6 of the supply pipe to the spray nozzle.
; connected to a portion 27 ; 29 extending into ; 106;
Claim 1, characterized in that the tube 33; 133 is arranged in the device case and is preferably made of an elastic material, so that at least its entire length can move freely within the case. The hand-held purifier according to any one of items 1 to 11. 13 The valve 31; 131 is an active pin 45; 145
an axially displaceable plunger having an axially displaceable plunger, the activation pin protruding from the front surface of the device case 1;
and, under the influence of the valve spring 46; 146, is normally in a position corresponding to the supply to the hydraulic motor, in which the activation pin is in the forwardmost position, and the push-in spray nozzle 3; a cradle part 3b; 103b cooperating with a pin, so that when the spray nozzle is pushed in, the active pin is pushed by the cradle part to a rear position corresponding to the supply to the spray nozzle; 13. The handheld cleaner according to claim 12, wherein the position of the activation pin does not change when the toothbrush is pushed in. 14. A sliding member 180 cooperating with the activation pin 14 and forming a cup-like member surrounding the preferably movable hollow shaft is mounted axially displaceably in a cover cap 110 provided on the front end of the case. The cradle 103b of the push-in spray nozzle, which extends through the central opening of the cover cap, presses the sliding member 180 rearward, and the activation pin 145 is pressed at this position. 14. A hand-held purifier according to claim 13. 15. The hollow shaft 113 consists of a metal tube 175 with a synthetic resin sheath 176, which preferably supports a metal sleeve 177 of its bearing part in the central hole 112 in the housing 106. 14. A handheld purifier according to claim 12 or 13, characterized in that: