Abstract:
The present invention relates to a dumbwaiter system which is capable of enabling users to automatically purchase and received goods in a residential area by being installed in a multi-dwelling building, and ensures the safety of the users by reducing contact with strangers and preventing crimes. To this end, a multi-stage dumbwaiter system, according to one embodiment of the present invention, comprises: a dumbwaiter having a body of which the inside is vacant the sides can be opened, and a horizontal transfer device for carrying an object inside or outside; and a home case disposed on one side of the dumbwaiter, and having a body of which the inside is vacant and the sides can be opened and a home case transfer device for carrying an object inside or outside, wherein the dumbwaiter delivers an object to the home case or receives an object from the home case.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This is a US national phase of PCT patent Application No. PCT/KR2013/006504 having an International filing date of Jul. 19, 2013, which claims priority to Korean Patent Application No. 10-2012-0080133, filed on Jul. 23, 2012, and Korean Patent Application No. 10-2012-0080135, filed on Jul. 23, 2012 the entireties of which are incorporated herein by reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates to a dumbwaiter system, and in particular to a dumbwaiter system characterized in that when a dumbwaiter system is installed at a habitation building complex such as an apartment complex, etc. so that a predetermined object may be automatically purchased or delivered in a habitation area, a user&#39;s safety may be secured in such a way to decrease any contacts with strangers and prevent any crimes. 
       BACKGROUND OF THE INVENTION 
       [0003]    The dumbwaiter configured to transport foods or packages may be called a lift. The dumbwaiter in general may be used as a transfer device dedicated to deliver foods at a restaurant made in a structure of a single floor or double floors and may be a small-sized lift configured for the sake of transfer or transportation of other objects. 
         [0004]    In addition, the Korean Patent Publication No. 10-2004-0076033 discloses a delivery input and output system based on network which is directed to a technology for installing a dumbwaiter at a habitation building complex such as an apartment complex, etc. and using the same for a door-to-door delivery service. 
         [0005]    However, the above-mentioned door-to-door delivery service system has problems in the way that if a dumbwaiter with a predetermined object carried arrives at a desired floor, and the object is not carried outside by a client, the object may be lost because the dumbwaiter has only a function of transferring the object in a vertical direction. In case where a dumbwaiter system is designed so that each residence receives a predetermined object, such a residence may be open to others through the dumbwaiter system. In this case, an uninvited person may intrude into a residence space through the dumbwaiter, which may cause a critical problem. 
         [0006]    Meanwhile, the conventional dumbwaiter is referred to as a transfer device having a simple structure for transferring a predetermined object to one space and is configured to move again after the conventional dumbwaiter moves once, completes one work and returns to the original position, so the working procedures are inefficient, and electric power consumption increases because of frequent uses. 
         [0007]    For this reason, in order to resolve the above-mentioned problems, a corresponding technical field urgently needs to develop a technology which may overcome a limitation where a conventional dumbwaiter carries a predetermined object into one space, in such a way that one space is classified and expanded into multiple floors in vertical and horizontal directions, by means of which an object carrying inside and outside function with respect to objects may be completed through one time transfer. 
         [0008]    In addition, according to the design of the habitation building complex, there may be two or more than two residences which each may share a sharing space such as a lift, steps, etc. at one floor. In this case, it needs to develop a technology on a dumbwaiter system which is capable of delivering a predetermined object to two or more than two residences using a single dumbwaiter. 
       RELATED TECHNOLOGY DOCUMENTS 
       [0009]    1. System for taking a parcel in and taking a parcel out based on network Korean patent publication No. 10-2004-0076033) 
         [0010]    2. Door apparatus for dumbwaiter (Korean patent application No. 10-2005-0104094) 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0011]      FIGS. 1 and 2  are views for describing a basic structure of a dumbwaiter system according to an exemplary embodiment of the present invention. 
           [0012]      FIG. 3  is a view illustrating a multiple floor/multiple stage type dumbwaiter system according to the present invention. 
           [0013]      FIG. 4  is a view for describing a configuration of a driving device which drives the multiple floor/multiple stage type dumbwaiter system of  FIG. 3 . 
           [0014]      FIGS. 5 to 7  are views illustrating a multiple floor/multiple stage type dumbwaiter according to another exemplary embodiment of the present invention. 
           [0015]      FIGS. 8 to 10  are views for describing an assigned method structure and a non-assigned method structure of a multiple floor/multiple stage type dumbwaiter system according to an exemplary embodiment of the present invention. 
           [0016]      FIG. 11  is a view illustrating a rotary type dumbwaiter according to the present invention. 
           [0017]      FIG. 12  is a view for describing a driving/control unit which drives a dumbwaiter of the rotary type dumbwaiter system of  FIG. 11 . 
           [0018]      FIGS. 13 to 16  are views for describing the flow of an operation of the rotary type dumbwaiter system of  FIG. 11 . 
           [0019]      FIGS. 17 to 20  are views illustrating a rotary type dumbwaiter system according to another exemplary embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    The present invention is made in an effort to improve the above mentioned problems. It is an object of the present invention to provide a dumbwaiter system characterized in that when a dumbwaiter system is installed at a habitation building complex such as an apartment complex, etc. so that a predetermined object may be automatically purchased or delivered in a habitation area, a user&#39;s safety may be secured in such a way to decrease any contacts with strangers and prevent any crimes. 
         [0021]    In addition, it is another object of the present invention to provide a multiple floor/multiple stage type dumbwaiter system which makes it possible to perform an object transfer and process by dumbwaiter, wherein a position detection sensor and an additional device are attached to each dumbwaiter, in such a way that a multiple floor/multiple stage type dumbwaiter is configured by vertically and/or horizontally connecting two or more than two dumbwaiters including a transfer device. 
         [0022]    In addition, it is further another object of the present invention to provide a rotary type dumbwaiter system wherein objects may be transferred to each residence using a single dumbwaiter even when the number of residences of the habitation building complex is two or more than two since the dumbwaiter of the present invention may rotate 360°. 
         [0023]    However, the objects of the present invention are not limited to the above mentioned objects, and the unmentioned objects may be also clearly understood with reference to the following descriptions by a person having ordinary skill in the art. 
         [0024]    To achieve the above objects, there is provided a dumbwaiter system, comprising a dumbwaiter which includes a hollow body and an openable side surface and includes a horizontal transfer device provided inside of the dumbwaiter for carrying an object inside or outside; and a home case which includes a hollow body and an openable side and includes a home case transfer device provided inside of the home case for carrying the object into or outside wherein the home case is arranged one side surface of the dumbwaiter, wherein either the dumbwaiter transfers the object into the home case or the dumbwaiter receives the object from the home case. 
         [0025]    The multiple floor/multiple stage dumbwaiter system according to an exemplary embodiment of the present invention is characterized in that a plurality of the dumbwaiter are stacked in horizontal and vertical directions, so that the object is transferred to both ends of the straight lines which are horizontally stacked or the object is received from both ends. 
         [0026]    The rotary type dumbwaiter system according to an exemplary embodiment of the present invention is characterized in that the home cases are formed, on the horizontal surface in multiple numbers, of first to n-th home cases (“n” represents a natural number which is two or more than two), and the dumbwaiter includes a circular plate-shaped turntable which rotates 360° in accordance with a control of the driving/control unit, a turntable top transfer device arranged on the top of the turntable, and a transfer device unit which is formed of a set of the 1 to n-th transfer devices each formed between the 1 to n-th home case and the turntable, and the object “J” is carried inside or outside in such a way that the moving direction of the turntable top transfer device on which the object “J” is placed is controlled to face the first to n-th home case by rotating the turntable in accordance with a control of the driving/control unit. 
       Advantageous Effects 
       [0027]    The dumbwaiter according to an exemplary embodiment of the present invention is advantageous in that when a dumbwaiter system is installed at a habitation building complex such as an apartment complex, etc. so that a predetermined object may be automatically purchased or delivered in a habitation area, a user&#39;s safety may be secured in such a way to decrease any contacts with strangers and prevent any crimes. 
         [0028]    The multiple floor/multiple stage type dumbwaiter according to another exemplary embodiment of the present invention makes it possible to perform an object transfer and process by dumbwaiter, wherein a position recognition sensor and an additional device are attached to each dumbwaiter, in such a way that a single floor/multiple floor type dumbwaiter is configured by vertically and/or horizontally connecting two or more than two dumbwaiters including a transfer device. 
         [0029]    In addition, the rotary type dumbwaiter system according to further another exemplary embodiment of the present invention is characterized in that objects may be transferred to each residence using a single dumbwaiter even when the number of residences of the habitation building complex is two or more than two since the dumbwaiter of the present invention may rotate 360°. 
       MODE FOR INVENTION 
       [0030]    The preferred exemplary embodiments of the present invention will be descried with reference to the accompanying drawings. In the course of the descriptions, the detailed descriptions of the related known functions or configuration will be omitted if it is judged that such descriptions might make unclear the subject matters of the present invention. 
         [0031]      FIGS. 1 and 2  are views for describing a basic structure of a dumbwaiter system according to an exemplary embodiment of the present invention, of which  FIG. 1  is a perspective view illustrating a basic structure of a dumbwaiter system, and  FIG. 2  is a cross sectional view illustrating a basic structure of a dumbwaiter system. 
         [0032]    Referring to  FIGS. 1 and 2 , the multiple floor dumbwaiter system includes a dumbwaiter  100 , a duct  200  and a home case  300 . The dumbwaiter  100  includes a horizontal transfer device  110  and a door unit  120 . The door unit  120  includes a first door  120 - 1  and a second door  120 - 2 . The materials of the horizontal transfer device  110  and the door unit  120  are steel, rubber, plastic, stainless, etc. which may be changed and used according to situation. 
         [0033]    Here, the first door  120 - 1  is formed at one side surface contacting with the home case  300 , and the second door  120 - 2  is formed at the opposite end where the home case  300  is formed, for the use when transferring a predetermined object when another home case is formed. Here, the first door  120 - 1  may be an automatic door, and may be any one of an upward or downward opening and closing type, a leftward or rightward opening and closing type, a center wise opening and closing type, a sideward opening and closing type, etc. which may be selected based on necessity. 
         [0034]    The duct  200  may be configured in such a way that a vertical transfer device (not shown) such as a wire, a chain, a push-pull arm, etc. may be connected to a driving device (not shown) inside of the duck in order for the dumbwaiter  100  to move upward or downward. The object accommodated inside of the dumbwaiter  100  may move in the interior of the duct  200  by means of the driving device in accordance with an external control, and the dumbwaiter  100  moves toward a residence space of a user wherein any of the terminal ends of the duct  200  is installed, and the dumbwaiter  100  which has completed the transfer is positioned at the home case  300  which is installed in the residence space of the user. 
         [0035]    The home case  300  is formed at the front end of the first door  120 - 1 , so that the object may carried into the home case  300 . When the object is completely delivered after the carrying outside work, the user can open the door (not shown) of each home case, so the home case  300  may be used as a means for securing safety. A home case transfer device  310  may be formed inside of the home case  300 . The home case transfer device  310  is configured to carry the object inside of the home case  300  with the aid of the horizontal transfer device  110  formed at the dumbwaiter  100  and to carry the object outside of the home case  300 . 
         [0036]      FIG. 3  is a view illustrating the multiple floor/multiple stage type dumbwaiter system according to the present invention.  FIG. 4  is a view for describing a configuration of the driving device  10  which drives the multiple floor/multiple stage type dumbwaiter system  1000  of  FIG. 3 . Referring to  FIGS. 3 and 4 , the dumbwaiter system  1000  includes a first dumbwaiter  100   a , a second dumbwaiter  100   b , a duct  200 , a first home case  300   a  and a second home case  300   b . In the dumbwaiter system  1000  in  FIG. 3 , two dumbwaiters of a multiple floor shape (vertical shape) are shown, but more than two dumbwaiters may be formed in a vertical shape. Here, the first dumbwaiter  100   a  includes a first horizontal transfer device  110   a , a first door unit  120   a , and a first position detection sensor  130   a , and the first door unit  120   a  may include a first door “a” ( 120   a - 1 ), and a second door “a” ( 120   a - 2 ) and is formed on the top of the second dumbwaiter  100   b.    
         [0037]    The first position detection sensor  130   a  may be formed inside of an assembly formed of pressure detection sensors arranged in a row inside of or on the upper surface of the first horizontal transfer device  110   a  or may be formed at the left side of the body of the first dumbwaiter  100   a  and at the end portion of the right side thereof or may be formed at the first door “a” ( 120   a - 1 ) and the second door “a” ( 120   a - 2 ) for thereby transferring a position detection signal of the object which moves on the first horizontal transfer device  110   a  to a driving/control unit  11 . 
         [0038]    The second dumbwaiter  100   b  includes a second horizontal transfer device  110   b , a second door unit  120   b , and a second position detection sensor  130   b . The second door unit  120   b  may include a first door “b” ( 120   b - 1 ) and a second door “b” ( 120   b - 2 ). Here, the first horizontal transfer device  110   a  and the second horizontal transfer device  120   b - 2  may be transformed into a roller shape formed of a plurality of rollers as well as a belt shape, a ball shape, a chain shape, etc. and may be transformed in terms of its shape into a straight line shape as well as a round shape. 
         [0039]    The second position detection sensor  130   b  may be arranged in a shape of an assembly formed of a plurality of pressure detection sensors arranged in a row inside of or on the top of the second horizontal transfer device  110   b  or may be formed at the left side of the body of the second dumbwaiter  100   b  or at the end portion of the right side thereof or may be formed at the first door “b” ( 120   b - 1 ) and the second door “b” ( 120   b - 2 ) for thereby transferring the position detection signal of the object which moves on the second horizontal transfer device  110   b  to the driving/control unit  11 . When the first position detection sensor  130   a  and the second position detection sensor  130   b  are configured, the kinds, the number and the attaching positions of the sensors may change based on necessities. 
         [0040]    The duct  200  may be configured in such a way that a device such as a wire, a chain, a push-pull arm, etc. may be connected inside of the duct  200  to the driving device  10  so that the first dumbwaiter  100   a  and the second dumbwaiter  100   b  arranged at the upper side and lower side can move upward and downward. The object accommodated inside of the first dumbwaiter  100   a  and the second dumbwaiter  100   b  may move upward and downward inside of the duct  200  in accordance with a control of the driving device  10 . The first dumbwaiter  100   a  and the second dumbwaiter  100   b  may move into the space of the residence of the user where any of the terminal ends of the duct  200  is installed, and the dumbwaiter  100  which has finished the transfer may be positioned at the first home case  300   a  and the second home case  300   b  which are installed in the spaces of the residences of the users. 
         [0041]    The first home case  300   a  provides a space for carrying the object inside or outside through the first door “a” ( 120   a - 1 ) of the first dumbwaiter  100   a  and the first door “b” ( 120   b - 1 ) of the second dumbwaiter  100   b  in accordance with the upward and downward movements on the ducts  200  of the first dumbwaiter  100   a  and the second dumbwaiter  100   b  and may include a first home case transfer device  310   a.    
         [0042]    The second home case  300   b  provides a space for carrying the object inside or outside through the second door “a” ( 120   a - 2 ) of the first dumbwaiter  100   a  and the first door “b” ( 120   b - 1 ) of the second dumbwaiter  100   b  in accordance with the upward and downward movements on the ducts  200  of the first dumbwaiter  100   a  and the second dumbwaiter  100   b  and may includes a second home case transfer device  310   b.    
         [0043]    As illustrated in  FIG. 2 , the driving/control unit  11  of the driving device  10  receives a position detection signal from the first position detection sensor  130   a  when an object is carried from the first home case  300   a  and through the first door “b” ( 120   b - 1 ) and the first home case transfer device  310   a  and into the second horizontal transfer device  110   b  of the second dumbwaiter  100   b  and controls in order for the same to move to the center of the second horizontal transfer device  110   b  of the object based on the above-mentioned state. Thereafter, the driving/control unit  11  controls the vertical transfer device (not shown) formed inside of the duct  200  for thereby moving the second dumbwaiter  100   b  upward or downward. 
         [0044]    An another example, the driving/control unit  11  of the driving device  10  receives a position detection signal from the first position detection sensor  130   a  and controls for the same to move to the end portion of the second horizontal transfer device  110   b  of the object based on the above mentioned state and carries outside the objet through the second door “b” ( 120   b - 2 ) into the second home case  310   b . Thereafter, the driving/control unit  11  receives a position detection signal of the object from the second position detection sensor  130   b  and controls in order for the same to move to the end portion of the second home case transfer device  310   b  of the object based on the above mentioned state. 
         [0045]    The input and output unit  12  is configured to input a transfer command with respect to the object which is transferred into the first home case  310   a  and the second home case  310   b  for the sake of the control of the driving/control unit  1 . Meanwhile, the input and output unit  12  may be configured in such a way that the input unit such as a keyboard, a mouse, etc. and the output unit such as a display in a form of a CRT, a LCD, a LED, etc. may be separately provided, but in the present invention, it is preferred that the input unit and the output unit having a touch module, etc. are integrally configured in a form of the touch screen. 
         [0046]    The storing unit  13  is configured to store a set of transfer commands which are inputted into the input and output unit  12  and are read by the driving/control unit  11  so that the set of the transfer commands may be performed based on the automatic process by means of the driving/control unit  11 . 
         [0047]      FIG. 5  is a view illustrating a multiple floor/multiple stage type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIG. 5 , the dumbwaiter system includes a first dumbwaiter  100   a , a second dumbwaiter  100   b , a third dumbwaiter  100   c , a fourth dumbwaiter  100   d , a first duct  200   a , a second duct  200   b , a first home case  300   a , and a second home case  300   b . In the multiple floor/multiple stage  2000  of  FIG. 5 , two or more than two dumbwaiters are stacked in a shape of vertical and horizontal combined multiple floors in vertical and horizontal directions, which may expand backward based on the direction illustrated. 
         [0048]    Here, each of the dumbwaiters  100   a  to  100   d  may be configured to have different features. In other words, each of the dumbwaiters may be divided into a hot and cold function compartment, a waste and recycling object-dedicated compartment, etc. Each of the home cases  300   a  and  300   b  may be divided into two or more than two sections, and all the vertical side, the horizontal side and the back side may be expandable. Here, the home case  300   a  and  300   b  may be also configured to have different features. 
         [0049]    The first dumbwaiter  100   a  includes a first horizontal transfer device  110   a , and a first door  120   a , and the second dumbwaiter  100   b  includes a second horizontal transfer device  110   b  and a second door  120   b , and the third dumbwaiter  100   c  includes a third horizontal transfer device  110   c  and a third door  120   c , and the fourth dumbwaiter  100   d  includes a fourth horizontal transfer device  110   d  and a fourth door  120   d.    
         [0050]    The first door  120   a  on the first dumbwaiter  100   a  and the second door  120   b  on the second dumbwaiter are formed at the side surface in the direction where the first home case  300   a  is formed, and the third door  120   c  on the third dumbwaiter  100   c  and the fourth door  120   d  on the fourth dumbwaiter  100   d  are formed at the side surface in the direction where the second home case  300   b  is formed. 
         [0051]    On the top of the second dumbwaiter  100   b , the first dumbwaiters  100   a  are stacked to form a row and are arranged inside of the first duct  200   a , and on the top of the fourth dumbwaiter  100   d , the third dumbwaiters  100   c  are stacked to form a row and are arranged inside of the second duct  200   b . Meanwhile, the first dumbwaiters  100   a  and the third dumbwaiters  100   c  are arranged in one row, and the second dumbwaiters  100   b  and the fourth dumbwaiters  100   d  are arranged in one row. 
         [0052]    Thanks to the above structure, the objects inside of the first dumbwaiter  100   a , the second dumbwaiter  100   b , the third dumbwaiter  100   c  and the fourth dumbwaiter  100   d  may be carried outside to the first home case  300   a  or the second home case  300   b  in accordance with a control of the driving device  10 . 
         [0053]    Namely, the first dumbwaiter  100   a , the second dumbwaiter  100   b , the third dumbwaiter  100   c  and the fourth dumbwaiter  100   d  are configured to carry, with the aid of the position detection sensors provided at each corresponding portion, the object inside or outside using the position detection sensors when the first dumbwaiter  100   a , the second dumbwaiter  100   b , the third dumbwaiter  100   c  and the fourth dumbwaiter  100   d  arrive at the position of the first home case  300   a  or the second home case  300   b . In the first dumbwaiter  100   a , the second dumbwaiter  100   b , the third dumbwaiter  100   c  and the fourth dumbwaiter  100   d , the position detection sensor installed at each of them may be a proximity sensor which may be configured in any of a photoelectric type, a pneumatic type, a magnetic type, a capacitance type, an ultrasonic wave type, etc. and may be changed into any of a photoelectric sensor, a differential transformer sensor, a step switch sensor, a capacitance sensor, etc. 
         [0054]      FIG. 6  is a view illustrating a multiple floor/multiple stage type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIG. 6 , the multiple floor/multiple stage type dumbwaiter system includes a first dumbwaiter  100   a , a second dumbwaiter  100   b , a first duct  200   a , a second duct  200   b , a first home case  300   a , a second home case  300   b , a first featured dumbwaiter  400   a , and a second featured dumbwaiter  400   d . The multiple floor/multiple stage type dumbwaiter system is characterized in that the first featured dumbwaiters  400   a  are stacked on the top of the first dumbwaiter  100   a  and are arranged in one row inside of the first duct  200   a , and the second featured dumbwaiters  400   b  are stacked on the top of the second dumbwaiter  100   b  and are arranged in one row inside of the second duct  200   b . Meanwhile, the first dumbwaiters  100   a  and the second dumbwaiters  100   b  are arranged in one row, and the first featured dumbwaiters  400   a  and the second featured dumbwaiters  400   b  are arranged in one row. 
         [0055]      FIG. 7  is a view illustrating the multiple floor/multiple stage type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIG. 7 , the multiple floor/multiple stage type dumbwaiter system  4000  includes a first dumbwaiter  100   a , a second dumbwaiter  100   b , a first duct  200   a , a second duct  200   b , a first home case  300   a , a second home case  300   b , a first featured dumbwaiter  400   a , a second featured dumbwaiter  400   b , a first featured home case  500   a , and a second featured home case  500   b . The multiple floor/multiple stage type dumbwaiter system  4000  in  FIG. 7  is formed in the same structure as the multiple floor/multiple stage type dumbwaiter system in  FIG. 8  except for the first featured home case  500   a  and the second featured home case  500   b.    
         [0056]    Namely, the first featured home cases  500   a  are stacked on the top of the first home case  300   a , and the second featured home cases  500   b  are stacked on the top of the second home case  300   b.    
         [0057]    Meanwhile, as an example of the featured application, in case of the food delivery-dedicated dumbwaiter at a school, a hospital, a restaurant, etc., the upper floor may be assigned as a compartment which needs to keep freshness, and the lower floor may be assigned as a compartment dedicated to the discharge of the food used. 
         [0058]      FIGS. 8 to 10  are views for describing an assigned method structure and a non-assigned method structure of a multiple floor/multiple stage type dumbwaiter system according to an exemplary embodiment of the present invention. First, referring to  FIG. 8 , the home case A 1  and the home case B 1  are arranged in a vertical direction by two in number, and the dumbwaiter A 2  and the dumbwaiter B 2  are arranged in a vertical direction by two in number, so a 1:1 assignment may be made based on the featured configuration. Therefore, the home case A 1  and the dumbwaiter A 2  operate in pair, and the home case B 1  and the dumbwaiter B 2  also operate in pair. For example, the home case A 1  and the dumbwaiter A 2  may be assigned to perform a function of carrying inside or outside daily consumable objects such as daily necessities, door-to-door delivery objects, etc., and the home case B 1  and the dumbwaiter B 2  may be assigned to perform a function of carrying inside or outside wastes, a waste separation discharge, etc. Here, the horizontal direction and the vertical direction and the numbers of the home cases and the dumbwaiters may be freely set. 
         [0059]      FIGS. 9 and 10  are views illustrating a non-assigned method structure wherein the number of the home case “C” is one, and the dumbwaiter “A” and the dumbwaiter “B” which are the multiple floor type dumbwaiters arrive at the requested floor. The number of the dumbwaiters formed of the dumbwaiter “A” and the dumbwaiter “B” is flexible, and the dumbwaiter “A” and the dumbwaiter “B” are configured to automatically arrive at the requested floor of the home case “C” with the aid of sensor-based recognitions. 
         [0060]    Next, the rotary type dumbwaiter system according to the present invention will be described with reference to  FIGS. 11 to 20 . 
         [0061]      FIG. 11  is a view illustrating a rotary type dumbwaiter system according to the present invention, and  FIG. 12  is a view for describing the driving/control unit  650  which drives the dumbwaiter  600  in the rotary type dumbwaiter system in  FIG. 11 .  FIGS. 13 to 16  are views for describing the flow of operations of the rotary type dumbwaiter system of  FIG. 11 . Referring to  FIGS. 11 to 16 , the rotary type dumbwaiter system includes a dumbwaiter  600 , a door assembly  700 , and a home case assembly  800 . 
         [0062]    The dumbwaiter  600  includes a turntable  610 , a turntable top transfer device  620  and a transfer device unit  630 , a sensor assembly  640 , a driving/control unit  650 , an input and output unit  660  and a storing unit  670 . The turntable  610 , the turntable top transfer device  620  and the transfer device unit  630  may be made of steel, rubber, plastic, stainless, etc. which may change according to situations. 
         [0063]    The turntable  610  is configured to allow the transfer direction of the turntable top transfer device  620  on the top of which the object “J” is placed, to face the transfer device, which discharges the object “J” in accordance with a control of the driving/control unit  640  in the transfer device unit  630  formed of a plurality of transfer devices, by rotating on the horizontal plane by 360° the turn table top transfer device  620  arranged on the top in accordance with a control of the driving/control unit  640 . 
         [0064]    The turntable top transfer device  620  performs a horizontal transfer function on the straight line in order for the object “J” to be carried inside or outside interlocking with the transfer device unit  630  which includes a first transfer device  630 - 1 , a second transfer device  630 - 2 , and a third transfer device  630 - 3 . 
         [0065]    For this, the turntable top transfer device  620  may be formed in a roller type which is an assembly of a plurality of rollers as illustrated in the drawings and may be transformed into a belt type, a ball type, a chain type, etc. and may be formed in a straight line shape as illustrated in the drawing as well as a round type (refer to  FIG. 18 ). 
         [0066]    The transfer device unit  630  includes a first transfer device  630 - 1 , a second transfer device  630 - 2  and a third transfer device  630 - 3  and is configured to perform a horizontal transfer function on a straight line in order for the object “J” to be carried inside or outside in the same way as the turntable top transfer device  620  between the turntable top transfer device  620  and the home case unit  800  which includes a first home case  800 - 1 , a second home case  800 - 2  and a third home case  800 - 3 . 
         [0067]    In the present exemplary embodiment of the present invention, the first transfer device  630 - 1 , the second transfer device  630 - 2  and the third transfer device  630 - 3  are configured in a structure wherein the first transfer device  630 - 1 , the second transfer device  630 - 2  and the third transfer device  630 - 3  are arranged on the same straight line as the turntable top transfer device  620  while the turntable  610  rotates at an angle of 90° about the quadrangle dumbwaiter  600  on the plane, and the quadrangle dumbwaiter  600  is positioned at the center of each side. 
         [0068]    The sensor assembly  640  includes a first position detection sensor  641 , a second position detection sensor  642 , a third position detection sensor  643 , and a central position detection sensor  644 . Each sensor may be formed in a set formed of pressure detection sensors. The kinds and number of the sensor assemblies  640  may change for another application. 
         [0069]    The first position detection sensor  641 , the second position detection sensor  642  and the third position detection sensor  643  each may be arranged in a set of pressure detection sensors which are arranged in one row inside of or on the top surface of the first transfer device  630 - 1 , the second transfer device  630 - 2  and the third transfer device  630 - 2  and are configured to transmit the position detection signals to the driving/control unit  650 . 
         [0070]    The central position detection sensor  644  may be formed in a set of pressure detection sensors which are arranged in one row inside of or on the top of the turntable top transfer device  620  for thereby transmitting a position detection signal to the driving/control unit  650 . 
         [0071]    As illustrated in  FIG. 4 , the driving/control unit  650  receives a position detection signal from the first position detection sensor  641  when the object “J” is carried from the first home case  600 - 1  into the first transfer device  630 - 1  through the first dumbwaiter door  700 - 1  and controls the same to move to the end of the first transfer device  630 - 1  of the object “J” based on the above state. Thereafter, when the object “J” is transferred from the first transfer device  630 - 1  to the turntable top transfer device  620 , the driving/control unit  650  detects the above stat using the central position detection sensor  644  arranged at the turntable top transfer device  620  and controls the same to move to the central portion of the turntable top transfer device  620 . Thereafter, the driving/control unit  650  rotates the turntable  610  in the normal direction (clockwise direction) by an angle of 90° and controls the turntable top transfer device  620  in order for the object “J” to be transferred to the second transfer device  630 - 2 . Therefore, the second transfer device  630 - 2  receives a position detection signal from the second position detection sensor  442  of the driving/control unit  650  and allows the object “J” to be carried outside through the second dumbwaiter door  700 - 2  into the second home case  800 - 2  in accordance with a control of the driving/control unit  650  based on the above mentioned state. 
         [0072]    Meanwhile, as illustrated in  FIG. 5 , the driving/control unit  650  receives a position detection signal from the second position detection sensor  642  when the object “J” is carried outside from the second home case  800 - 2  and through the second dumbwaiter door  700 - 2  and into the second transfer device  630 - 2  and controls the same to move to the end portion of the second transfer device  630 - 2  of the object “J” based on the above mentioned state. Thereafter, when the object “J” is transferred from the second transfer device  630 - 2  to the turntable top transfer device  620 , the driving/control unit  450  controls the same to move to the central portion of the turntable top transfer device  620  according to the detection by the central position detection sensor  644  provided at the turntable top transfer device  620 . Thereafter, the driving/control unit  450  rotates the turntable  410  in the reverse direction (counterclockwise direction) by an angle of 180° and controls the object “J” to be transferred to the third transfer device  630 - 3  by controlling the turntable top transfer device  620  in order for the object “J” to be transferred to the third transfer device  630 - 3 . Therefore, when a position detection signal is transferred from the third position detection sensor  643  of the driving/control unit  650 , the third transfer device  630 - 3  allows the object “J” to be carried outside through the third dumbwaiter door  700 - 3  into the third home case  700 - 3  in accordance with a control of the driving/control unit  650  based on the received position detection signal. 
         [0073]    The input and output unit  660  is configured to input a transfer command with respect to the object “J” which is supposed to move into the first home case  800 - 1  to the third home case  800 - 3  which belong to the home case assembly  800  for the sake of a control of the driving/control unit  650 . The input and output unit  660  may be configured in such a way that the input unit such as a keyboard, a mouse, etc. and the output unit formed of a display such as a CRT, a LCD, a LED, etc. are separately formed, but in the present invention, it is preferred that an input unit and an output unit having a touch module may be integrated into one touch screen. 
         [0074]    The storing unit  670  is configured to previously store a set of transfer commands which are inputted into the input and output unit  660 , and the stored set of transfer commands are read by the driving/control unit  650 , so a set of the transfer commands may be automatically processed by the driving/control unit  650 . 
         [0075]    The dumbwaiter door unit  700  includes a first dumbwaiter door  700 - 1 , a second dumbwaiter door  700 - 2  and a third dumbwaiter door  700 - 3  and may be further equipped with an automatic opening and closing function which allows the doors  700 - 1  to  700 - 3  to be automatically opened or closed in accordance with a control of the driving/control unit  650 . 
         [0076]    Each of the first dumbwaiter door  700 - 1 , the second dumbwaiter door  700 - 2  and the third dumbwaiter door  700 - 3  may be disposed between the first transfer device  630 - 1  and the first home case  800 - 1  and between the second transfer device  630 - 2  and the second home case  800 - 2  and between the third transfer device  630 - 3  and the third home case  800 - 3 , so the object “J” may be carried inside or outside by means of an automatic control or a manual work of the driving/control unit  650 . 
         [0077]    The home case unit  800  includes a first home case  800 - 1 , a second home case  800 - 2  and a third home case  800 - 3 . Each of the first home case  800 - 1 , the second home case  800 - 2  and the third home case  800 - 3  may be formed at the front end of the first dumbwaiter door  700 - 1 , at the front end of the second dumbwaiter door  700 - 2  and at the front end of the third dumbwaiter door  700 - 3 . When the carrying outside of the object “J” into each home case is finished, the user may open the door (not shown) of each home case, which means that a predetermined safety-related means may be secured. 
         [0078]      FIG. 17  is a view illustrating a rotary type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIG. 17 , in the rotary type dumbwaiter system, the dumbwaiter  600  is formed on the plane in a hexagonal shape each side of which contacts with the first dumbwaiter door  700 - 1  to the sixth dumbwaiter door  700 - 6 , respectively. 
         [0079]    In addition, the first home case  800 - 1  to the sixth home case  800 - 6  are formed at the front surfaces of the first dumbwaiter door  700 - 1  to the sixth dumbwaiter door  700 - 6 . 
         [0080]    The driving/control unit  650  controls the carrying inside and outside of the object “J” between the first home case  800 - 1  to the sixth home case  800 - 6  to be performed based on the 360° of the turntable top transfer device  620  formed on the top of the turntable  610  and the horizontal transfer of the object “J”. 
         [0081]      FIG. 18  is a view illustrating a rotary type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIG. 18 , in the rotary type dumbwaiter system, the dumbwaiter  600  may be formed on the plane in a hexagonal shape each side of which contacts with the first dumbwaiter door  700 - 1  to the fourth dumbwaiter door  700 - 4 , respectively. Meanwhile, the first home case  800 - 1  to the fourth home case  800 - 4  are formed at the front surfaces of the first dumbwaiter door  700 - 1  to the fourth dumbwaiter door  700 - 4 . 
         [0082]    Meanwhile, a first object movement passage  900 - 1 , a second object movement passage  900 - 2 , a third object movement passage  900 - 3  and a fourth object movement passage  900 - 4  are formed between the first dumbwaiter door  700 - 1  and the first home case  800 - 1  and between the third dumbwaiter door  700 - 2  and the second home case  800 - 2  and between the third dumbwaiter door  700 - 3  and the third home case  800 - 3  and between the fourth dumbwaiter door  700 - 4  and the fourth home case  800 - 4 , respectively. 
         [0083]    Here, the first object movement passage  900 - 1  may be formed in a form of a short straight line, wherein both sides of the first object movement passage  900 - 1  is sided by partitions. Meanwhile, there may be a predetermined difference between one side of the hexagonal dumbwaiter  600  and the first home case  800 - 1  on the plane contacting with the first object movement passage  900 - 1 . 
         [0084]    The second object movement passage  900 - 2  may be formed in a form of a straight line like the first object movement passage  900 - 1 , but the second object movement passage  900 - 2  is formed a little bit longer in a form of a straight line than the first object movement passage  900 - 1 , wherein both sides are sided by partitions. Here, the lengths of the partitions may be different. 
         [0085]    The third object movement passage  900 - 3  and the fourth object movement passage  900 - 4  all are formed in curved shapes. In this case, the curvatures of the curved shapes of the third object movement passage  900 - 3  and the fourth object movement passage  900 - 4  may be different from each other. 
         [0086]      FIGS. 19 and 20  are views illustrating a rotary type dumbwaiter system according to another exemplary embodiment of the present invention. Referring to  FIGS. 19 and 20 , it is possible to make movable the turntable top transfer device  620  which is disposed on the top of the turntable  610  placed on the top of the dumbwaiter  600 . 
         [0087]    Namely, the turntable top transfer device  620  in  FIG. 19  may be equipped with a transfer device which may move linearly in the vertical and horizontal directions between the above transfer device and the turntable  610  so as to perform a horizontal movement function on the straight line in order for the object “J” to be carried inside or outside in case where there is a predetermined space with respect to the transfer device unit  630  which includes a first transfer device  630 - 1 , a second transfer device  630 - 2  and a third transfer device  630 - 3 . 
         [0088]    For this, a transfer device which may move linearly in the vertical and horizontal directions in a form of roller, belt, ball, chain, etc. may be provided between the turntable top transfer device  620  and the turntable  610 . Namely, when the turntable top transfer device  620  in  FIG. 19  approaches the first transfer device  630 - 1 , it is possible to approach the first transfer device  630 - 1  as illustrated in  FIG. 20  through the linear movements of the vertical, downward direction. 
         [0089]    Thereafter, not illustrated in the drawings, the turntable top transfer device  620  may approaches the second transfer device  630 - 2  or the third transfer device  630 - 3  based on the rotations by the turntable  610  after the turntable top transfer device  620  has returned to the initial position in  FIG. 19 . 
         [0090]    As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.