Abstract:
An induction actuated container includes a container body, a container cover, a drive and an induction element. The drive includes a driven operating member and a driving member. The induction elements includes a sensor and an actuating controller for the driving member. One end of the driven operating member is transmissively connected with the container cover, the other end is transmissively connected with the driving member, and the sensor is electrically connected with the actuating controller for the driving member, and the actuating controller for the driving member is connected with a controlling end of the driving member. A signal caused by the approaching of a human or object is received by the sensor and is converted into an electrical signal. Then, the actuating controller for the driving member controls the driving member to perform a corresponding mechanical action.

Description:
CLAIM OF PRIORITY 
     This Application is a Section 371 National Stage Application of International Application No. PCT/CH00/00127 filed 5 May 2000 and published as WO 01/62617, not in English and claims benefit of Chinese Patent Application Serial No. 00204125.1, filed 26 Feb. 2000, which is hereby incorporated by reference in its entirety, and priority is hereby claimed under 35 U.S.C. §119 on both of these applications. 
    
    
     TECHNICAL FIELD OF THE INVENTION 
     The invention relates to a container with a cover, and more particularly to an induction-actuated container. 
     DESCRIPTION OF THE RELATED ART 
     In prior art, containers with covers must be opened and closed manually. This creates inconvenience in operation. When the container is packed with special materials, such as rubbish or medical disposals, manual operation to the container cover will not only be inconvenient, but also have the risk of infection. 
     SUMMARY OF THE INVENTION 
     The object of the invention is to provide a convenient and hygiene induction actuated container so as to overcome the disadvantages of the prior art. 
     The object of the invention is realized through the following aspects. 
     According to the first aspect of the invention, an induction actuated container having a container body and a container cover, wherein further comprises: a drive means comprising a driven operating member and a driving member. and an induction means comprising a sensor and an actuating controller for the driving member; wherein one end of the driven operating member is transmissively connected with the container cover; another end is transmissively connected with the driving member; the sensor is electrically connected with the actuating controller for the driving member, and the actuating controller for the driving member is connected with the controlling end of the driving member; signal caused by the approaching of human or an object is received by the sensor and is converted into an electrical signal and sends the electrical signal to the actuating controller for the driving member; the actuating controller for the driving member controls the driving member to perform a corresponding mechanical action. 
     The drive member comes into being a mechanical movement under electric operation. Relevant action from the drive member opens or closes the container cover through driven operating member. Evidently, the approaching of human body or an object to the container will actuate the open action of the container cover. When human body or an object moves away, the triggering to the sensor disappears, then the container cover closes. 
     The object of the invention could also be realized through the following features. 
     Movements of the driven operating member and connections to the container cover can be the following modes: 
     The container cover is hinged with one side of the container body; the driven operating member comprises a crown bar, the top end of the crown bar is hinged with the container cover, and the hinging point between the top end of the crown bar and the container cover is apart from that between the container cover and the container body. The up and down movement of the crown bar opens and closes the container cover respectively. 
     The driven operating member comprises a crown bar; the top end of the crown bar is connected with the container cover. The container cover in this arrangement only covers on the container without any connection. The up and down movement of the crown bar moves the cover up and down to realize its open and close action respectively. 
     The driven operating member comprises a rotating bar, the top end of the rotating bar is connected with the container cover at its side edge. The container cover in this arrangement also only covers on the container without any connection. When it is necessary, the rotating bar rotates to a certain angle to separate the container cover from the container to realize the open action of the container cover. 
     The drive member can be either a motor or an electromagnetic clutch, which provides with up and down movements. 
     The open and close of the electromagnetic clutch make the crown bar move up and down. 
     The container body includes the outer body and the inner barrel. The inner barrel is fits in in the outer body. 
     The drive means and the induction means are generally installed on the outer body. The inner barrel is usually bare. When the container cover is open, the inner barrel could be moved out for the convenience of use. 
     There are several options to the induction means, especially to the sensor. Some of them are referred as below: 
     The sensor is an inductive oscillator; the induction means further comprising a filter shaping circuit, the actuating controller for driving member comprising a monostable trigger; the filter shaping circuit is connected between the sensor and the monostable trigger; the monostable trigger is connected to the actuating controller for the driving member; the approaching of an object or human body will change the oscillating frequency of the inductive oscillator, the signal output the inductive oscillator is first filtered and shaped, and then goes through the monostable trigger and the actuating controller for the driving member to make the driving member to perform corresponding mechanical action. 
     The sensor is a microwave probe, the induction means further comprising an amplifying comparator, and the actuating controller for the driving member further comprising a monostable trigger and a driving circuit; the amplifying comparator is connected between the microwave probe and the monostable trigger; when there is relative radial movement between the transmitted microwave signal and the being measured active object, the signal reflected from the being measured active object will have frequency shift, as a frequency shift signal, the frequency shift signal is amplified and compared by the amplifying comparator; the amplifying comparator then sends out a triggering signal to the monostable trigger and driving circuit to make the driving member to perform corresponding mechanical action. 
     The sensor comprises an infrared transmitter and an infrared receiver, the induction means further comprising an amplifying comparator, and the actuating controller for the driving member comprising a monostable trigger and a driving circuit; the amplifying comparator is connected between the infrared receiver and the monostable trigger; the infrared receiver receives the signal reflected from human body or object, the amplifying comparator amplifies the received signal and compares with a reference value so that making a judgment, and sends out a triggering signal to the monostable trigger and driving circuit if necessary to make the driving member to perform corresponding mechanical action. 
     Further, it is preferably comprising a limit means. The limit means has an upper and a lower travel switches and triggering bar; upper and lower travel switches are arranged opposite to each other and mounted to the container body; one end of the triggering bar is connected to the driven operating member; another end is connected between the upper travel switch and the lower travel switch; and the limit means is mounted on the container body. 
     As a result, as compared with the prior art, the invention has the following advantages: Container cover automatically opens when human body or an object approaches without any direct body contacts. This is not only convenient in use, but also releases people from worries of body contacts with the containers. The invention is especially suitable for the containers for rubbish, medical apparatus, or food. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above and other objects, advantages, and features of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which: 
     FIG. 1 is a schematic diagram showing configurations of an induction-actuated container according to the first embodiment of the invention. 
     FIG. 2 is a block diagram showing the operating principle of the induction means used in the induction-actuated container according to the first embodiment of the invention. 
     FIG. 3 is a circuit diagram of the induction means used in the induction-actuated actuated container according to the first embodiment of the invention. 
     FIG. 4 is a schematic diagram showing configurations of an induction-actuated container according to second embodiment of the invention. 
     FIG. 5 is a block diagram showing the operating principle of the induction means used in the induction-actuated container according to the second embodiment of the invention. 
     FIGS. 6A and 6B show is a circuit diagram of the induction means used in the induction-actuated container according to the second embodiment of the invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     First Embodiment 
     Referring to FIG. 1, the induction-actuated container consists of a container body  1 , container cover  2 , drive means, and induction means. The container body includes an outer body  11  and an inner barrel  12 . The inner barrel  12  is sat in the outer body  11 . The driver means includes a driven operating member  31  and a drive member  32 . The driven operating member is a crown bar, which is hinged at the top thereof with the container cover  2 . The hinging connection point between the crown bar and the container cover is apart from the hinging point between the container cover  2  and container body and located at the inner side of the hinging point. The drive member  32  is an electromagnetic clutch comprising an electromagnet. The lower part of the crown bar is plugged through the core cavity of the electromagnetic and connected with a magnet. Sensor  4  of the induction means is mounted in the induction window  13 . The induction window  13  is located at the upper part of the side wall of the container outer body  11 . Other components of the induction means (including battery set  6  and circuit  7 ) are mounted in the lower part of the container outer body  11 . 
     Referring to FIG. 2, the induction means consists of a sensor  41 , a filter shaping circuit  43 , and an actuating controller  42  for the driving member. The actuating controller  42  for the driving member includes a monostable trigger  421  and a driving circuit  422 . The filter shaping circuit  43  is connected between the sensor and the monostable trigger  421 , and the monostable trigger  421  is electrically connected to the drive member  32  via the driving circuit  422 . 
     Referring to FIG. 3, the sensor  41  is an inductive oscillator, which consists of a triple point capacitor type oscillator by a transistor Q 1 , capacitors C 1  to C 3  and an inductance L 1 , and an induction board M. One end of the induction board M is connected to the inductance L 1 . There is a distributive capacitor C 0  between the induction board M and grounding. The parameters of the distributive capacitor C 0  are changed with the approaching of human body. The emitter of the transistor Q 1  is connected with resistor R 3 , capacitor C 4  and the base of transistor Q 6 . The collector of the transistor Q 6  is connected with the base of transistor Q 7 . The collector of the transistor Q 7  is connected with pin  9  of the NAND gate 74LS24. Capacitor C 8  is connected between pin  9  of NAND gate 74LS24 and pin  3  of phase inverter 74HC14. Pin  3  of the phase inverter 74HC14 is also connected with diode D 4  and resistor R 10 . The monostable trigger  421  is consisted by NAND gate 74LS24, inverter 74HC14, capacitor C 8 , diode D 4 , and resistor R 10 . Pin  4  of the inverter 74HC14 is connected with the base of transistor Q 2  via resistor R 7 . The emitter of transistor Q 2  is connected with power supply V. The collector of transistor Q 2  is connected with the connector of electromagnetic clutch. 
     The operation principle of this embodiment is explained as follows. 
     When human body approaches to the induction board M, the voltage of the high frequency signal at both ends of the distributive capacitor C 0  is decreased. Positive feedback voltage to the base of transistor of transistor Q 1  via capacitor C 3  is not enough to maintain continuous oscillation of the transistor Q 1 . So oscillation of transistor of transistor Q 1  is stopped, so that the current pass through resistor R 3  is decreased. Transistor Q 6  is turned off, while transistor Q 7  is turned on. Collector of transistor Q 7  outputs a low level to trigger the monostable trigger  421  to output a low level for a certain interval (about 4 to 6 seconds). Meanwhile transistor Q 2  is turned on to make the electromagnet in the electromagnetic clutch to move the crown bar upward to open the container cover. After about 4 to 6 seconds, the electrical supply to the electromagnet is stopped. Then the container cover is felled and closed with its own weight and the weight of the crown bar. 
     The same portions as those of the prior art are omitted here. 
     Second Embodiment 
     Referring to FIG. 4, the induction-actuated container consists of a container body, a container cover  2 , a drive means, and induction means, and a limit device. The drive means includes a driven operating member  31 , a gear change mechanism  33  and a drive member  32 . The driven operating member  31  is a crown bar, which is connected to a crank  34  at the lower end. The other end of the crank is connected to the output shaft of the gear change mechanism  33 . The gear change mechanism  33  is transmissively connected to the output shaft of the motor, which forms the drive member  32 . The limit device includes an upper travel switch K 1 , a lower travel switch K 2  and a trigger bar  51 . The upper and lower switches are mounted opposite to each other and fixed at the bottom of outer body  11  of the container. One end of the trigger bar is connected to the crown bar; the other end is plugged between of the upper travel switch K 1  and the lower travel switch K 2 . 
     Referring to FIG. 5, the induction means consists of a sensor  41 , an amplifying comparator  44  and an actuating controller  42  for the driving member. The actuating controller  42  for the driving member includes a monostable trigger  421 , a driving circuit  422 , and a rotating controller  423  of the drive member. The amplifying comparator  44  is connected between the sensor  41  and the monostable trigger  421 . The monostable trigger first is electrically connected with the buck-boost rotating controller  423  of the drive member, then connected with the driving circuit  422 . The base circuit  45  is connected with amplifying comparator  44 . 
     Referring to FIGS. 6A and 6B, the sensor  41  consists of an infrared transmitter and an infrared receiver. Two units (IC 1 A and IC 1 B) of a hexad-inverter CD 4069 , resistors R 3  and R 4 , diode D 5  and capacitor C 1  forms the narrow pulse oscillating circuit. The shaping and amplifying circuit is formed by the of the unit IC 2 A of the hexad-inverter 74HC14 and the transistor Q 1 , and connected with the infrared LED D 1 . The infrared receiver is mainly consisted of the infrared detection diode D 2 . There are two amplifiers in the amplifying comparator  44 . The comparator is consisted by unit IC 4 A and unit IC 4 B of the operational amplifier LM 324 , peripheral capacitors C 2  to C 6 , and resistors R 5  to R 8 . The infrared detection diode D 2  is connected with the negative terminal (−) of unit IC 4 A via capacitor C 2 . Capacitor C 4  is connected between the output terminal of unit IC 4 A and the negative terminal of unit IC 3 B. The output end of unit IC 4 B is connected to diode D 3  via capacitor C 6 . Diode D 3  is connected to capacitor C 7 , resistor R 9 , and the negative terminal of unit IC 4 C from operational amplifier LM 324 . The comparator of the amplifying comparator  44  is consisted of unit IC 4 C, diode D 3 , capacitor C 7  and resistor R 9 . Varistor W 1  is connected with the positive terminal (+) of unit IC 4 C to provide a reference voltage. The monostable trigger  421  is formed by the unit IC 3 C of NAND gate 74LS24, unit IC 2 B of hexad-inverter 74HC14, capacitor C 8 , diode D 4  and resistor R 10 . Capacitor CB is connected cross unit IC 3 C and unit IC 2 B, and is separately connected with diode D 4  and resistor R 10 . Unit IC 2 B is connected with unit IC 2 D, and IC 3 C is connected with IC 3 B. The rotating controller  423  of the drive member is formed by the units IC 2 C, IC 2 D and IC 2 E of hexad-inverter 7p4LS24, travel switches K 1  and K 2 , and resistors R 11  and R 12 . The unit IC 3 A is connected to resistor R 11  and travel switch K 1 ; Unit IC 3 B is connected to resistor R 12  and travel switch K 2 ; Unit IC 2 E is connected to the base electrode of transistor Q 2  via resistor R 13 ; Unit IC 2 C is connected to the base of transistor Q 3  via resistor R 14 ; Collector of transistor Q 2  is separately connected to the collector of transistor Q 4  and the positive terminal (+) of a motor; Collector of transistor Q 3  is separately connected to the collector of transistor Q 5  and the negative terminal (−) of the motor. The driving circuit  422  is formed by the transistors Q 2  to Q 5  and resistors R 13  to R 18 . 
     In this embodiment, only two units, IC 1 A and IC 1 B, of the hexad-inverter are used. Only five units, IC 2 A to IC 2 E, of hexad-inverter 74HC14 of the Schmidt trigger type are used. Only two units, IC 3 A and IC 3 B, quad-NAND gate 74LS24 of the Schmidt trigger type, in which each NAND gate has two input terminals, are used. Only three units, IC 4 A to IC 4 C, of the operational amplifier LM 324  are used. 
     Operation principle of this embodiment is explained as follows: 
     Narrow pulse oscillating signal is transmitted by the infrared LED D 1  after shaping and amplifying. When there is an approach of human body or an object to the upper part of the induction window  13  equipped with an infrared LED and an infrared detection diode, the infrared signal reflected is inverted into electrical pulse signal after the receiving of the infrared detection diode D 2 . The signal is sent to the comparator after amplification to compare with the reference voltage. When the amplitude of the amplified signal is higher than the reference voltage, output end of unit IC 4 C (pin  8  of LM 324 ) is switched from the high level to the low level. The low level then triggers the monostable trigger  421  to make the output end of unit IC 2 B (pin  4  of 74HC14) send out the low level for a certain interval (about 4 to 6 seconds). The interval depends on the parameters of capacitor C 8  and resistor R 10 . 
     If the container cover is closed, the upper travel switch is turned off, and the lower travel switch is turned on. The low level makes the output end of unit IC 2 E (pin  10  of 74HC14) produce a high level and the output end of unit IC 2 C (pin  6  of 74HC14) produce low level via the operation of the rotating controller  423  of the drive member. These two signals are applied to transistors Q 2  and Q 5  so that they are turned on, and transistors Q 3  and Q 4  are turned off. Reverse rotating voltage is applied to the motor terminal to make the motor to rotate reversely to lift the crown bar upward to open the container cover  2 . 
     When the container cover is opened to a limit position, the upper travel switch K 1  is turned on and the lower travel switch is turned off. The output ends of unit IC 2 E (pin  10  of 74HC14) and unit IC 2 C (pin  6  of 74HC14) are low level. The driving circuit  422  is not functioning and the motor is not energized to keep the container cover  2  at the highest position. When the delay signal interval of the monostable trigger  421  ends, output end of unit IC 2 B (pin  4  of 74HC14) is switched to high level to make the output ends of unit IC 2 E (pin  10  of 74HC14) and unit IC 2 C (pin  6  of 74HC14) become low level and high level respectively. The driving circuit  422 , transistors Q 3  and Q 4  are turned on, transistors Q 2  and Q 5  are turned off. Forward voltage is applied to the motor to move the crown bar downward to close the container cover  2  gradually. When the cover is closed to its position, the lower travel switch is turned on to make the output end of unit IC 2 C (ping  6  of 74HC14) is switched to low level. Transistors Q 2  to Q 5  are turned off and the motor is not energized. The whole circuit is ready for the next operation cycle. The same portions as those of the first embodiment are omitted in this embodiment for simplifying the description.