JPH03504679A - portable electric dental device - 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] portable electric dental device The present invention relates to a portable electric mechanical instrument device, preferably a device for driving a dental tool. .

Devices of the above type may be used, for example, in Mouth II! -C2-3122065 and Mouth B-C2- No. 3122062 and is incorporated herein by reference. This device is equipped with a power supply and It has a housing that encloses the data. The plug outlet is for charging the power supply. Since the power supply section is installed at the bottom of the housing for connected to mains power via a regulator and rectifier. This known device is relatively short and/ or physically limited use - one electrical capacity or one in terms of power, effect or energy. It is also limited because the amount of energy is limited.

Devices of the above type are also described in US-A-3,450,908, D B-8-2-2529277, US-A-4,455,466 and US-A- 3,548°134.

The object of the invention is to provide a device which overcomes many of the drawbacks of the known devices mentioned above. .

Accordingly, the present invention relates to a portable dental power device and includes a tool portion, one or more bags. When assembled together with the battery part, this tool part forms a manual device for mechanical equipment. said one or more batteries comprising: and said one or more batteries separate from said tool portion and received by a recharging device. It consists of a recharging device for recharging the battery part.

Therefore, in the above device, one battery section is used to drive the tool section; Other associated battery parts are recharged by a recharging device so that machine operation can be performed continuously. Ru.

In a preferred embodiment according to the invention, the device comprises one tool part, at least four bags. The recharger comprises a recharger having a battery part and four battery parts receiving the battery part. subordinate This thus makes it possible to supply the required amount of energy almost at all times.

In the present invention, the assembly device of the tool part and the battery part is mutually rotatable and mutually It is removable, and the tool part is installed in the housing and the housing. has a shaft protruding from the shaft, and the shaft is rotated by supplying electrical energy. an electric motor for supplying electrical energy to the electric motor; consisting of a set of electrical connection means, The battery section consists of a housing, a rechargeable battery contained within the housing of the battery section. a battery means, and at least one set of connections connected to each electrode of the battery means; The battery consists of a recharging battery means in the battery section and a power supply means in the tool section. connected to one set of connection means described above to enable an electrical connection between the The battery section and tool section are assembled together so that the battery section can be recharged. The connection means of the battery part and the connection of the tool part between the battery means and the electric motor of the tool part. electrically connected by mutual rotation from the neutral position through the connecting means, and , the electrical connection between the battery part connection means and the tool part connection means is a first direction to a first operating position for transmitting electrical energy from the means to the electric motor; , the motor is shut off so as to rotate the shaft in a first rotational direction. The tool part and the battery part are assembled and the battery part recharges the battery means and the tool part is in the assembled state. The battery is connected to the electric motor of the battery via the connection means of the battery section and the connection means of the tool section. opposite to said first direction for transmitting electrical energy from the battery means to the electric motor. from a neutral position to a second operating position, when the motor is in the opposite direction of rotation to the first rotational direction. Electrical connection is made by mutually rotating the shafts in this direction. and the connection means for the battery section is such that the battery section is separated from the tool section. and transmits a charging current from the recharging device to the recharging battery means. characterized in that it is adapted to be connected to a contact means on the recharging device in order to .

Therefore, reversal of the rotational direction of the motor is controlled very simply and easily. similar to the electric motor in a well-defined neutral position between the above two operating positions. Current cut-off is simply and easily controlled.

Furthermore, an advantageous feature of the invention is that the connecting means of the tool part and the connecting means of the battery part are 2 electrical switches, the first of which is a switch in which the tool part and the battery part are in phase with each other in the first position. When rotated alternately, forming a current path from the battery means in the first direction to the electric motor; The other one is a battery in a second direction when the tool part and the battery part mutually rotate to the first position. forming a current path from the means to the electric motor opposite the first direction; These switches disconnect the electric motor from the battery means when the two parts are in the neutral position. The purpose of this is to interrupt the current path to the terminal.

In a preferred embodiment of the invention, the connection means of the device are located in the housing of the battery part. The connecting means of the tool part consists of two terminals exposed on the outer surface, and the connecting means of the tool part consisting of a set of contact terminals adapted to cooperate with the terminals. .

In the portable electric device according to the invention, the housing of the battery part is preferably Consists of a qualitatively straight, cylindrical protruding insert or male part, on which the terminal is exposed. has been done. The housing of the tool portion includes a receiving portion substantially complementary and cooperating with the insert. The contact terminals of the set are exposed thereon. Furthermore , these terminals are exposed on a substantially straight, cylindrical protruding insert, and are The contact terminals of the socket are exposed on a substantially plane surface of the receiver. This is because the housing is When formed into a straight or cylindrical shape without protrusions, the structure can be made very small and compact. from a hygienic and aesthetic point of view and from the intended use. Aruku.

In a preferred embodiment of the present invention, the terminal is arranged in an arc shape on a substantially plane surface of the insertion portion. The arc is centered on the axis of rotation of the insert. The above terminals and/or Spring-loaded or contact terminals allow long intervals during cleaning of the terminals, even under unfavorable conditions. for reliable energy transfer. conductive devices, e.g. steel brushes or To avoid short circuits between terminals when cleaning with a file, use a non-conductive material, e.g. For example, a plastic cam is provided which projects from the substantially plane surface of the insert.

Preferably, the cam surrounds at least a portion of at least one of the terminals.

For quick and accurate axial assembly and fixing of tool and battery parts It is preferable to assemble these parts using insertion joints. joint The battery part is kept rotatable with respect to the tool part by a spring-loaded ball. Particularly suitable for coupling to stationary members in the radial direction, the spring-loaded balls are is received in the shaft hole in the housing of the battery part, and is inserted into the groove or groove of the other housing. It is designed to work together with the truck.

In a preferred embodiment of the portable electric device of the invention, the device of the invention is have two battery parts with different amounts of power and/or requirements and are rechargeable. The electric device and battery part can be used to recharge the battery part of type 1, and the recharger is type 1. The receiver has cooperating cord means to prevent recharging of another battery section within the section. . This allows two different battery parts to be connected without destroying the low power capacity battery part. allows the use of one and the same recharging device for each device, and the high power battery section is Ensures that it is recharged when supplying a large current.

In a preferred embodiment of the present invention, the above-mentioned safety is achieved by providing the above-mentioned insertion portion to a first bottle protruding from a substantially plane plane of the second type of battery; a second bin projecting from an opposite substantially plane of the tool part; This is obtained by providing two recesses corresponding to each pin. recharging device The receiver section and the tool section's receiver section are substantially similar. Therefore, these should be similarly The receptacle of the tool part may be manufactured with two recesses in the part and at the same time the receptacle of the recharging device. It is preferable to provide one recess in the part.

The present invention also relates to a device for driving a dental tool, including a housing, a connection of the housing, and a device for driving a dental tool. A coupling part provided at the mating end, approximately for connecting to the dental tool part protruding from the housing. It consists of a cylindrical tube with an outer diameter of 10 mm. This joint is annular at the root of the tubular part. A flat part, a motor installed in the housing, and a motor coupled to and connected to the motor. a ratchet that protrudes from the housing into the tubular section to transmit rotation from the dental tool section to the dental tool section; It has a cut-shaped rotation transmission means. Known devices of the above type are popular in Europe. It can be used only for ntra system, and the geographical distribution of the equipment may be and limit the possibility of free selection between different types of tools on the market. Main departure The device according to the present invention is characterized in that an annular groove is formed at the root of the tubular part within the joint of the device according to the invention. The present invention overcomes this limitation of the prior art. In the device of the present invention, the total length of the tubular portion is The maximum height of the tubular part on the annular plane is 25.5 mm. The depth is at least about 2 mm, and at most about 8 mm.

and the outer diameter of the groove is at least 14 mm, preferably about 15 m+n. and preferably a ratchet-type rotation transmission hand protruding high from the annular surface to the tubular portion. The distance to the edge of the step is maximum 11mm, minimum 4mm, preferably 7.5mm Small or <4.5 mm and protrudes far from the bottom of the groove into the tubular part The distance to the edge of the ratchet type rotation transmission means is maximum 19 mm and minimum 9 mm, Preferably smaller than 13°5mm, maximum larger than 11mm. Ru. The above dimensional configuration is the intra type popular in Europe and the one used in the United States. It can be applied to devices used in both Mid-West type dental tools. Provides reliable rotational transmission without complicating the assembly of the device and dental tools. Let it happen. Said annular surface with an outer diameter between 20 mm and 28 mm, preferably 21 mm. By forming the groove, the lower part of the cross section of the groove is placed on the flange section on the dental tool joint. A good and hygienic relationship between the device and the intra-dental tool is provided when the surface substantially coincides with the and aesthetic transition, and a good transition between the above device and the mid-west dental tool. enable.

Said tubular part may be suitably perforated, so that the tubular part has a flexible effect on this perforation. Hold dental tools safely using the handle. Even and better tool fixation is desired. In this case, locking means may be provided around the upper part of the annular groove.

The coupling part may be removably installed on the device, so that the coupling part can be connected to other Coupling for dental tools, e.g. 5 tar type and/or gear ratio between motor tools It can be easily and easily replaced by changing gears.

Further, the present invention provides a housing having an upper side and a bottom side that is placed on a supporting surface such as a floor. a ring provided on or in the housing, preferably protruding from the housing; It has a switch to turn it on. The device according to the invention has a switch in the housing of the device. mounted on the bottom side, the device comprising one or more elastically deformable materials, preferably plastics; Elastically deformable supports such as pads or feet made of sticks, foam plastics, etc. the support means protruding from the bottom side of the button-type switch; actuating a push-button switch by connecting the switch to the support means; The housing has elasticity that can be elastically deformed by applying pressure to the upper part of the housing. It is characterized by

switch, mounted on the front or rear plate of the above housing, or on the top plate of the housing. Contrary to known electrical or electronic devices that have a button-type switch attached to the A push-button switch according to the invention projects from the bottom side of the housing of the device. Ru. This position and the form of the elastically deformable support means that characterize the invention If the button-type switch is installed so that it protrudes from the bottom side of the mechanically protect the device and apply pressure from above with your foot or hand to the upper side of the device housing. To facilitate the operation of pushbutton switches. button switch The only prerequisite for correct operation is to pressurize the upper side of the housing. This pressure causes the actuation of the push-button switch and, at the same time, the elastic deformation of the support means. must be sufficient for Button switch for actuation There is no need to pressurize itself. The dentist holding the drill determines the local position of the drill. Make a dental drill at the same time while paying direct attention to other instruments in the patient's mouth. It is a well-known situation that causes Additionally, conventionally, to start or stop a dental drill, Under such circumstances, the dentist should use the button-type switch installed on the foot pedal. It was now possible to activate the switch. However, the electricity of the present invention is the structure of the electronic device, and the operation of the switch of the dental drill installed inside the device is Safely and reliably, the dentist simply steps on the top of the device.

The pressure on the upper side of the housing is within the range of the support surface formed by the deformable support means. The elastic deformation support means is activated at the same time as the operating pressure of the button switch is reached. If the object is only deformed, a button switch will work.

Pressure applied around the upper side of the housing of the above device is ensured by the push-button switch. To operate the switch, a button-type switch must be inserted at the bottom center of the device shape. or mounted centrally on the bottom side of the device housing. .

A feature of the support means of the invention is a closure ring surrounding the button switch; or forming an elastically deformable annular ribbon protruding from the bottom side of the housing. It is in. The ribbon that surrounds this button-type switch also Mechanically protects the tongue switch from dust collected by the ribbon. Protect button-type switches. Therefore, this ribbon made of elastically deformable material become dirty and unsanitary over time. For this purpose, the support means are located on the bottom side of the housing. removably attached to the top, preferably by means of a VELCRO-type locking means. Good. The above device is installed on a soft base, e.g. floor carpet or on the ground. To ensure that the push-button switch operates reliably even when A plate such as a plastic plate is inserted under the button type switch within the support means. is preferred.

By making the support means removable, the device of the present invention can be attached to the bottom side of the housing. If installed, attach a button switch to the front, side, or rear plate of the housing. The device of the present invention can also be selectively used in conventional devices installed. this For selective use, the device of the invention is suitable for being carried on a belt or in a pocket; When the support means is removed from the bottom side, the button switch of the present invention Acts as a push-button switch. According to a preferred embodiment of the present invention, This is a refill device for refilling dental drills. However, many of these devices contain electrical or electronic means and can be used in conjunction with other devices . This device of the invention therefore includes one or more electrical connection means for conducting current, preferably Alternatively, it is preferable to have a locking type means. This device also It is preferable to have means for adjusting the pressure. This device according to the invention is a connected device, For example, it is convenient to use as a foot switch to open and close tools, and currently available on the market. The built-in switch is a foot switch. Moreover, this device of the present invention can transmit and receive signals. A reliable wireless transceiver may be included, such a variant device having a PR (Radio Frequency ), especially with microwave, ultrasound or infrared transmission means.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

Brief description of the drawing FIG. 1 is a perspective view of a first embodiment of a hand device according to the invention with a dental tool attached; Ru.

FIG. 2 is a partial view of the embodiment of FIG.

FIG. 3 is another partial view of the embodiment of FIGS. 1 and 2;

FIG. 4 is a detailed view of the joint between the two parts.

FIG. 5 is a cross-sectional view of the embodiment of FIGS. 2 and 3 including a planar portion.

FIG. 6 is a schematic diagram showing the function of the apparatus of FIGS. 1 to 5.

FIG. 7 is a detailed view of the embodiment of the device according to the invention shown in FIG.

FIG. 8 shows a recharging device according to the invention.

FIG. 9 shows a recharging device according to the invention with a battery section attached.

Figures 10 to 12 show three types of dental tools, Intra, each different from the device in Figure 1. system, 1d-West system, 5tar system This shows the connection mode with.

FIG. 13 shows an embodiment of the device according to the invention.

FIG. 1 shows a device according to the invention, a hub having two mutually rotatable parts 11 and 12. Consists of Uzing. The two parts 11 and 12 can be easily separated by applying a small holding force. I can let go. /'%Using further includes a connecting member 13 to which a dental tool 14 is attached. .

FIG. 2 shows a battery holder held by external threads corresponding to internal threads in section 11. 1 forming a cylindrical chamber for receiving the three socket elements 15 housed in the cylinder 10; Part 11 is shown. The sleeve holder 10 and the housing part 11 have an insertion part 16. .

This insertion part 16 includes three electrical terminals, and the upper two terminals 17 in FIG. 2 have one electrode. Moreover, it can be integrally molded, and one terminal 18 at the bottom in Fig. 2 has an opposite electrode. have

FIG. 3 shows parts 12, 13 and 14. The section 12 cooperates with the insert section 16 of FIG. The receiver has a part 20 which is connected to a motor 23 installed in part 13. Four contact terminals 21 are embedded together with the wires. Part 12 is a screw thread. It is held within the connecting part 13 by a yoint.

The motor 23 is a ratchet type rotation transmission hand that transmits rotation from the motor to the dental tool 14. It includes a step 24 and is screwed into the connecting part 13 by two screws 25 . Connecting part 13 further includes a cylindrical tube portion 26 projecting from the housing for coupling the dental tool 14. nothing.

The connection between part 10 and part 12 held within part 11 is shown schematically in FIG. There is. As is clear from FIG. 4, the insertion section 16 of the section 10 has four spring biased balls. Contains 27. The spring-biased ball 27 has a bearing for fixing the two parts 10 and 12 in the axial direction. It is adapted to be received within a groove 28 in portion 20. The part 12 also has three shaft grooves 3. 0, in which a spring-loaded ball 29 installed on the insert 16 connects the part 10. and 12 to the desired relative rotational position corresponding to the neutral position and the different movements of 2. received so as to be fixed or held in the working position.

A protruding pin 31 is further installed on the cam 19 of the insertion portion 16. Projecting pin 31 The receiver engages within the groove 33 in the portion 12, thereby causing the receiver to engage the insertion portion 16 with respect to the portion 20. It is designed to guide you.

As is clear from FIG. When these parts or parts 10 and 12 rotate relative to each other, two of the four contact terminals 21 and Connecting. The contact terminal is spring-loaded by a spring 32 and the ball in one of the grooves 30 29 and a good electrical connection between the terminals 17.18 and the contact terminals 21. form a touch.

The contact principle is outlined in Figure 6, from which it can be seen how the current to the motor 23 It is clear that the flow is blocked and reversed.

FIG. 7 shows a particular embodiment of the cam 19, on which a projection 35 is connected to the terminals 17 and 18. between the terminals to minimize the risk of short circuits.

FIG. 18 shows an embodiment of a recharging device according to the invention. This recharging device or recharging The device 70 includes a housing 71 on an upper side 72 in which a plurality of recharge cells are formed.

Three battery sections 73, 74 and 75 are shown for three of these recharging cells. There is. The two battery sections 73 and 74 receive a relatively high charging current, and the third battery section 73 and 74 receive a relatively high charging current. The battery portion 75 receives a relatively low current. The design of the recharge cell is Shown in this figure. Such a recharging cell is designated by the reference numeral 77 and is clearly 2 and 3, the recharging cell 77 substantially corresponds to section 20 of section 12 in FIGS. The receiver includes a portion 78. This receiving part is a part for fixing this part in the receiving part 78. The guide groove 79 ( (corresponding to the guide groove 33) and a groove 80 (corresponding to the groove 28). Recharger is also A switch 83 is provided on one part 82.

The recharger is powered from a DC power source, such as a car battery or a solar battery. Although the recharger is supplied with a suitable charging current like a recharger, in the illustrated embodiment the recharger is 85 and a plug 86 to the mains power supply. The recharger shown is the desired It has a transformer and a rectifier for charging current. The device of the invention furthermore controls, For example, it may include electronic circuitry to control charging time or quick charging functionality. .

FIG. 9 shows a portion 49 of the recharging receiver according to the present invention, and the recharging receiver according to the present invention is The battery part has an insertion part including the cam 19 attached thereto. Ru. This means that one or the same recharger may be included in another housing with a different capacity node. If the battery element is used to recharge it, the battery element may become too high. This shows how a small current protects against charging. The recharger has a V-shaped notch 64. formed, in which two sets of charging terminals 65 and 66 are provided, from which different Power charging current is supplied. The current charged by terminal 55 is supplied from terminal 65. higher than the supplied charging current. A battery with sufficient power to withstand the low current charged from terminal 65. The notch part containing the rechargeable battery protrudes from the cam 19, and the terminals 17 and 18 are high. It has a pin 36 that prevents contact with a charging terminal 66 that supplies charging current. Conversely , the nozzle containing the rechargeable battery for high charging current is equipped with a 36° protruding pin. , this pin is connected to the recharger when the terminal of such a battery is connected to the charging terminal 66. Ensures fixed operating position within.

10 and 11 show a particular embodiment of the coupling part 13 having a tubular part 26. FIGS. Int An annular plane for abutment with the lower part of the dental tool 14 of RA type (shown in FIG. 10). 42 is formed on the upper side of the connecting part. The tubular portion 26 has a hole 38 in its upper part. As a result, the tubular part can securely hold the dental tool by the spring action of the hole.

An annular groove 41 is formed at the root of the tubular portion 26, which is defined as Mid - corresponds to the flange 44 of the dental tool 39 of the West type (shown in FIG. 11) . In this way, the ratchet type rotation transmission means 24 (see Fig. 3) (see above) Transmits rotation to both types of dental tools.

The connecting part 13 is preferably removable and, for example, the connecting part 45 has a connecting part 45. Since the device of the present invention can be replaced with a connecting part of the type shown in FIG. 0 rotation transmission (this can be used. This connecting portion 45 is connected to the ratchet type rotation transmission means 24. shaft means 46 for transmitting rotation from the 5 tar tool 40 to the toothed shaft do. One bearing is provided around the shaft means 46 in the portion 47, and the bearing is provided around the shaft means 46 in the connecting portion 45. is a threaded joint 48 (which may be fixed to the stranded connection part 13).

The coupling part 13 also has a gear part that changes the gear ratio between the motor 23 and the tool. may be replaced by

FIG. 13 shows the apparatus with a dental tool installed. This equipment number wire 61 and two via lugs 62, 63]-to a power supply housed within the maggot 50.

Flag 624;! /＼To send current from the power supply inside Uzing 50 to the motor of the device. The socket 59 in the housing 50 cooperates with the socket 59.

The housing 50 of the power supply part has an upper part 51 and a bottom part from which the button switch protrudes. 52. The pad 56 is made of an elastically deformable material, e.g. foam rubber. It may be secured to the bottom 52 of the housing 50 by BELCRO type locking means. Money A metal plate 58 is inserted into the pad 56. A pad 56 is attached to the bottom 52 of the housing. When fixed, this metal plate abuts the switch 53. The housing 50 also for transmitting current from a source, e.g., a charging device, to an internal flow source within the housing 50. It has a standard locking socket 60, preferably for a Ni-Cd battery. Consists of a rechargeable battery.

Furthermore, the device is equipped with a switch on the bottom, for example for adjusting the speed of the dental tool. You may do so.

The design of power supply section 50 can also be used in other devices.

Fig, 10 Fig, 11 Fig, 12 Procedural amendment (formal ) July 1991 supplementary date Wataru Fukasawa, Commissioner of the Patent Office 1.Display of the incident PCT/DK89100086 1999 Patent Application No. 504465 2. Name of the invention portable electric dental device 3. Person who makes corrections Relationship to the incident Patent tbu person Name Raper, Yorn 4. Agent Address: 8-10-6 Toranomon-chome, Minato-ku, Tokyo 105, subject to amendment (1) Translation of the description and claims (2) Power of attorney 7. Contents of correction (1) Translation of the description and claims (no change in content) (2) As per attached sheet 8. List of attached documents (1) Translation of the specification and claims, one copy each (2) Power of attorney and its translation 　　　　　　One international search report each 1--1--1N-1 Electric--H--11AM@1mH@, p(7,MeTIK89 100086 international search report PCT/DK 89100086

Claims (1)

[Claims] 1. a tool part, one or more battery parts, which tool part, when assembled, together with the battery part; forming a hand-operated device for a mechanical instrument, and separated from said tool part into a recharging device; a portable rechargeable device comprising a recharging device which, when received, recharges one or more of the battery parts described above; Electric dental equipment. 2.1 tool part, at least 4 battery parts and 4 receivers receiving 4 battery parts 2. The portable electric dental device of claim 1, comprising a recharging device having a recharging device. 3. The tool part and battery part in the above assembled state are mutually rotatable and mutually separable. can be, The tool section includes a housing, and is provided within the housing, and is connected to the housing. has a shaft protruding from the shaft, and the shaft is rotated by supplying electrical energy. an electric motor, and a small electric motor for supplying electrical energy to said electric motor. It consists of at least one set of electrical connection means, the battery part being connected to the housing and the battery part. Rechargeable battery means contained within the housing of the battery section and said battery. comprising at least one set of connecting means connected to each electrode of the battery means; The battery section is a combination of the recharging battery means of the battery section and the electric motor of the tool section. said set of connecting means to enable an electrical connection between the I was thinking, The above battery section and the above tool section are assembled together with the rechargeable battery hand of the above battery section. A connecting means of the battery section and the electric motor of the tool section are connected between the step and the electric motor of the tool section. electrically connected by mutual rotation from the neutral position through the connecting means; In this case, the electrical connection between the connection means of the battery part and the connection means of the tool part is , a first actuator for transmitting electrical energy from said battery means to said electric motor; In a first direction toward the operating position, the motor rotates the shaft in a first rotational direction. is blocked in such a way that The said tool part and the said battery part are in the assembled state and the said battery part has a recharging battery means. and the electric motor of the tool section, the connection means of the battery section and the electric motor of the tool section. transmitting electrical energy from said battery means to said electric motor via a connecting means; the motor from the neutral position opposite to the first direction to the second operating position. the motor rotates the shaft in a direction opposite to the first rotation direction. electrical connection is made by rotating the The connection means for the battery section is such that the battery section is separated from the tool section and the connection means is connected to the battery section. When received by the charging device, a charging current is transmitted from the recharging device to the recharging battery means. 2. The recharging device according to claim 1, wherein the recharging device is adapted to be connected to a contact means on the recharging device in order to Portable electric dental equipment. 4. An electric switch having two connecting means for the tool part and two connecting means for the battery part. The first feature is that the tool section and the battery section mutually rotate to the first position. forming a current path leading from the battery means in the first direction to the electric motor; The other one is that when the tool section and the battery section mutually rotate to the first position, the tool section and the battery section move to the second position. forming a current path leading from the battery means in the first direction to the electric motor in the opposite direction; When these two parts of the housing are in the neutral position, these switches close the battery. 4. The portable electric dental device of claim 3, wherein the electric current path from the means to the electric motor is interrupted. . 5. The connection means of the battery part are two exposed on the outer surface of the housing of the battery part. and the connecting means of said tool part have two sets of terminals exposed on said tool part. contact terminals, which are adapted to cooperate with said terminals. 3 or 4 portable electric dental devices. 6. The housing of the said battery part has a substantially straight, cylindrical protruding insert or a male having a section on which the terminal is exposed, and a housing of the tool section having a a receiving portion or female portion substantially complementary to and cooperating with the insertion portion; The portable electric tooth according to claim 5, wherein the contact terminal of the tooth is exposed in the receiving part. Department equipment. 7. The terminal is substantially straight, exposed substantially in the plane of the cylindrical projection insert, and 7. The mobile phone according to claim 6, wherein the set of contact terminals are exposed on a substantially plane surface of the receiving part. Band electric dental device. 8. The terminal is arranged in an arc on a substantially plane surface of the insertion portion, and the arc is 7. The portable electric dental device of claim 6, wherein the portable electric dental device is centered on the axis of rotation of the insertion portion. 9. 9. The terminal and/or contact terminal according to claim 5, wherein the terminal and/or the contact terminal are spring-loaded. Any one of the portable electric dental devices. 10. A cover of non-conductive material such as plastic that protrudes from the substantially plane surface of the insertion portion. a cam is provided between the two terminals, the cam being connected to at least one of the terminals; A portable electric dental device according to any one of claims 5 to 9, wherein the portable electric dental device preferably encloses a portion of the dental device. Device. 11. The tool part and the battery part are plug-in joints (hayonet joy). Any one of claims 1 to 10, which can be assembled by 1 portable electric dental device. 12. The battery part is connected to the tool part or the shaft hole in the housing of the battery part. It is held rotatably with respect to the tool part by a spring biased ball installed inside. Is it like that? , and adapted to cooperate with grooves or holes in other housings. 12. A portable electric dental device according to any one of claims 1 to 11. 13. At least two types with different amounts of power and/or requirements for charging current It has a battery part of type 1, and the recharging device and the battery part are used for recharging a type 1 battery part. has a cooperating cord means to allow and prevent recharging of other types of battery parts. A portable electric dental device according to any one of the preceding claims. 14. The first type battery portion has a first pin protruding from a substantially plane surface of the insertion portion. and a second type battery portion protrudes from a substantially plane opposite the insertion portion. a second pin, and the tool portion is configured to correspond to each of the first and second pins. 14. The portable electric dental device of claim 13, comprising two corresponding recesses. 15. It is characterized in that it has a tool part and a battery part according to any one of the above claims. A hand tool for dental machinery and equipment. 16. A tool part according to claim 15. 17. A battery section according to claim 15. 18. A recharging device according to any one of claims 1 to 14. 19. a housing, a connecting portion provided at a connecting end of the housing, and a connecting portion of the housing; a circle with an outer diameter of approximately 10 mm for protruding from the ring and connecting to a dental tool. It consists of a cylindrical tubular part, and this connecting part connects the annular plane part at the root of the tubular part to the housing. a motor installed in the motor, and a dental motor connected to and connected to the motor. a ratchet protruding from the housing to the tubular portion for transmitting rotation to the tool; has a T-shaped rotation transmission means, and an annular groove is formed at the root of the tubular part in the connecting part. A dental tool drive device characterized by: 20. The total length of the tubular part is maximum 28mm, and the height of the tubular part on the annular plane is maximum 25.5 mm, the depth of said groove is at least about 2 mm, at most about 8 mm, preferably preferably about 5 mm, and the outer diameter of said groove is at least 14 mm, preferably about 15 mm. 20. The apparatus of claim 19. 21. A ratchet-type rotation transmission means that protrudes longest from the annular surface to the tubular portion. a maximum of 11 mm, a minimum of 4 mm, preferably less than 7.5 mm The radius is larger than 4.5 mm and protrudes farthest from the bottom of the groove into the tubular part. The distance to the edge of the chet type rotation transmission means is preferably 19 mm at maximum and 9 mm at minimum. The device according to claim 19 or 20, wherein the diameter is less than 13.5 mm and larger than 11 mm. Place. 22. The annular surface has an outer diameter of between 20 mm and 28 mm, preferably about 21 mm. 22. A device according to any one of claims 19 to 21, comprising: 23. The lower part of the cross section of the groove above is the flange on the connecting part of the -Mid-West type dental tool. 23. The device of any one of claims 19 to 22, substantially conforming to a di-section. 24. 24. A device according to any one of claims 19 to 23, wherein the tubular portion is perforated. 25. Claims 19 to 2, wherein the locking means is provided around the upper part of the annular groove. 4. Any one of the above devices. 26. Apparatus according to any one of claims 24 or 25, wherein the connecting part is removable. . 27. A housing having a top side and a bottom side that rests on a supporting surface such as a floor, or and a switch provided on or in the housing and preferably protruding from the housing. one or more switches mounted on the bottom side of the housing; on elastically deformable materials, preferably plastics, foam plastics etc. It has an elastically deformable support means such as a pad or foot, and this support means by connecting a push button switch to the support means. pressurizes the upper side of the housing to activate the push-button switch an electrical or electronic device having elasticity that causes it to be elastically deformed. 28. The above push button switch is installed at the bottom center of the shape of the above housing. 28. The apparatus of claim 27, wherein: 29. The above push-button switch is installed at the top center of the bottom side of the above housing. 29. The device of claim 27 or 28, wherein the device is 30. The support means are preferably of the VELCRO type on the bottom side of the housing. Any one of claims 27 to 29, wherein the device is detachably attached by a locking means. or 1 device. 31. There is no metal or plastic material under the pushbutton switch in the above support means. 31. A device according to any one of claims 27 to 30, wherein a plate, such as a disc plate, is inserted. 32. When said support means are removed from said bottom side, said push-button switch The switch is a belt or switch that can act as a traditional push-button switch. according to any one of claims 27 to 31, which can be accommodated in a pocket or a pocket. Device. 33. having one or more electrical connection means, preferably locking-type means, for passing electrical current; , the apparatus according to any one of claims 27 to 32. 34. Claims 27 to 33, comprising means for regulating the supplied power or voltage. Any one of the following devices. 35. Any of claims 27 to 34, comprising a wireless transceiver for transmitting and receiving signals. The first device. 36. FR (Radio Frequency), especially microwave, ultrasound or infrared transmission 36. Apparatus according to any one of claims 27 to 35, comprising steps.