Patent Publication Number: US-10315877-B2

Title: Double-coiling-belt paper money temporary storage device

Description:
This application is a National Phase entry of PCT Application No. PCT/CN2015/087898, filed Aug. 24, 2015, which claims the priority to Chinese patent application No. 201410827210.8 titled “DOUBLE-TAPE BANKNOTE TEMPORARY STORAGE DEVICE”, filed with the Chinese State Intellectual Property Office on Dec. 25, 2014, the entire disclosure of which are incorporated herein by reference. 
     FIELD 
     The present application relates to sheet-type medium temporary storage apparatuses, and more particularly to a banknote temporary storage device used in a financial mechanism, in which banknotes are wrapped by two layers of tapes, and are held between the double tapes and are wound on a banknote temporary storage reel to be temporarily stored. 
     BACKGROUND 
     In a financial self-service apparatus, a stack of banknotes is required to be separated from each other for being verified one by one, and then identification means such as image identification, thickness detection, magnetic information detection is performed on an individual banknote so as to ensure the authenticity of the processed banknotes. During the whole processing, the banknotes which have been verified are required to be stored temporarily, and the temporarily stored banknotes will be released and conveyed to a designated position until the process of the whole stack of banknotes are completed. 
     Currently, a banknote-type medium temporary storage apparatus generally temporarily stores banknotes on a cylindrical banknote temporary storage reel by wrapping the banknotes by two layers of tapers, so as to achieve the function of temporary storage of banknotes in the apparatus. The two layers of tapes are respectively received on another two cylindrical reels, i.e., tape withdrawing reels, by rolling. Such a manner for temporarily storing banknotes requires a motor to drive the banknote temporary storage reel for receiving the two layers of tapes and banknotes held by the two layers of tapes, and also requires another motor to synchronously drive the two tape withdrawing reels for respectively withdrawing the two tapes. The method for controlling and conveying same tapes by two motors has a synchronous matching issue, which imposes high requirement on structural assembling and a control system, and is apt to subject a dual function that tapes slip with respect to the banknote temporary storage reel or the tape temporary storage reel and the tapes are tensioned. Thus, the service life of the tapes will be reduced for long term use, and then the fault rate will be increased, the stability of the apparatus will be reduced, and employing two motors also imposes higher requirement on capacity of the apparatus, causing a waste of resources and increasing energy consumption of the apparatus. 
     SUMMARY 
     In order to address the issues in the conventional technology that a double-tape banknote temporary storage device has a matching difference in the synchronous driving of double motors and wastes resource and increases energy consumption of an apparatus, a double-tape banknote temporary storage device is provided according to the present application, which is driven by a single motor and overcomes the issues in the conventional technology. 
     The double-tape banknote temporary storage device, includes a banknote temporary storage reel, a pair of tape withdrawing reel assemblies, a pair of tapes, and a pair of tape pressing wheels. The banknote temporary storage reel is configured to wind a pair of tapes with banknotes stored the pair of tapes. The pair of tape withdrawing reel assemblies are a first tape withdrawing reel assembly and a second tape withdrawing reel assembly which have the same structure, and the first tape withdrawing reel assembly and the second tape withdrawing reel assembly are located respectively at two sides of the banknote temporary storage reel and are each configured to wind an individual tape after banknotes are released. Two ends of the pair of tapes align with each other and are fixed onto the banknote temporary storage reel, and another ends of the pair of tapes are fixed respectively onto the first tape withdrawing reel assembly and the second tape withdrawing reel assembly. The pair of tape pressing wheels is located between the banknote temporary storage reel and tape withdrawing reels, for pressing the two ends, close to the banknote temporary storage reel, of the pair of tapes and forming a stretch of double-tape conveying passage. Specifically, the double-tape banknote temporary storage device further includes a planetary gear decelerating motor and a synchronous gear transmission system, and a driving gear is provided on an output shaft of the planetary gear decelerating motor, and the synchronous gear transmission system is configured to transmit power of the planetary gear decelerating motor to both of the banknote temporary storage reel and the pair of tape withdrawing reel assemblies simultaneously. Specifically, the synchronous gear transmission system includes a first gear configured to drive the banknote temporary storage reel, a first transmission gear set engaged with the driving gear and transmitting power to both of the banknote temporary storage reel and the first tape withdrawing reel assembly simultaneously, and a second transmission gear set connecting the first gear and the second tape withdrawing reel assembly and transmitting power to the second tape withdrawing reel assembly. 
     Preferably, the first tape withdrawing reel assembly includes a first counterclockwise one-way drive gear, a first clockwise one-way bearing fixing seat, a first torsion limiter, a first rotating shaft and a first tape withdrawing reel. Specifically, an inner ring of the first torsion limiter is fixed onto the first rotating shaft by a cylindrical pin, and a pin key on an outer ring of the first torsion limiter is engaged with a pin key on an inner ring of the first tape withdrawing reel. The first clockwise one-way bearing fixing seat is arranged at the right of the first torsion limiter, an inner ring of the first clockwise one-way bearing fixing seat is sleeved on the first rotating shaft, and an outer ring of the first clockwise one-way bearing fixing seat is fixed to a sheet metal side plate. The first counterclockwise one-way drive gear is arranged at the right of the first clockwise one-way bearing fixing seat, and an inner ring of the first counterclockwise one-way drive gear is sleeved on the first rotating shaft and the first counterclockwise one-way drive gear is engaged with the first transmission gear set. 
     Specifically, the first transmission gear set includes a coaxial gear set and a first transmission gear. The coaxial gear set includes a large gear and a small gear which are arranged coaxially, and the large gear is engaged with the driving gear and is also engaged with the first counterclockwise one-way drive gear, so as to transmit power of the driving gear to the first counterclockwise one-way drive gear and further drive the first tape withdrawing reel assembly to rotate. 
     Specifically, the first transmission gear is located between the small gear and the first gear, and is engaged with the small gear and the first gear to transmit the power of the driving gear to the first gear and further drive the banknote temporary storage reel to rotate. 
     Preferably, the second tape withdrawing reel assembly includes a second counterclockwise one-way drive gear, a second clockwise one-way bearing fixing seat, a second torsion limiter, a second rotating shaft and a second tape withdrawing reel. Specifically, an inner ring of the second torsion limiter is fixed onto the second rotating shaft by a cylindrical pin, and a pin key on an outer ring of the second torsion limiter is engaged with a pin key on an inner ring of the second tape withdrawing reel. The second clockwise one-way bearing fixing seat is arranged at the right of the second torsion limiter, an inner ring of the second clockwise one-way bearing fixing seat is sleeved on the second rotating shaft, and an outer ring of the second clockwise one-way bearing fixing seat is fixed to a sheet metal side plate. The second counterclockwise one-way drive gear is arranged at the right of the second clockwise one-way bearing fixing seat, and an inner ring of the second counterclockwise one-way drive gear is sleeved on the second rotating shaft and the second counterclockwise one-way drive gear is engaged with the second transmission gear set. 
     Specifically, the second transmission gear set includes a second coaxial gear set and a second transmission gear. The second coaxial gear set includes a second large gear and a second small gear which are coaxially arranged, the second small gear is engaged with the second transmission gear, the second transmission gear is also engaged with the first gear, and the second large gear is engaged with the second counterclockwise one-way drive gear to transmit power of the driving gear to the second counterclockwise one-way drive gear and further drive the second tape withdrawing reel to rotate. 
     Preferably, the first transmission gear set and the second transmission gear set are two-stage decelerating gears. 
     Preferably, a clutch is provided on the output shaft of the planetary gear decelerating motor for replacing the driving gear, and is configured to achieve engagement and disengagement of the output shaft of the planetary gear decelerating motor and the synchronous gear transmission system. When power is off and the apparatus is stopped, the output shaft of the planetary gear decelerating motor may be separated from the gear at an input end of the synchronous gear transmission system by the clutch, therefore, the synchronous gear transmission system may be driven by a manual operation, and maintenance of the double-tape banknote temporary storage device is performed when power is off. 
     Specifically, the clutch includes a clutch gear, a split washer and a hollow clutch movable shaft, the clutch gear is sleeved on the clutch movable shaft, and is axially limited on the clutch movable shaft by the split washer and a retaining edge of the clutch movable shaft. An engaging boss structure is provided at one side of the clutch gear, and the clutch gear is rotatable freely on the clutch movable shaft, and an inner surface of the clutch movable shaft is provided with screw threads. A clutch engaging block is further provided on the output shaft of the planetary gear decelerating motor, and the clutch is secured onto the output shaft of the planetary gear decelerating motor by the screw threads on the inner surface of the clutch movable shaft, and the clutch is engaged with the clutch engaging block by the engaging boss structure on the side of the clutch gear for achieving torque transmission. 
     Compared with the conventional technology, the double-tape banknote temporary storage device has the following advantages. 
     1. The double-tape banknote temporary storage device employs a single motor to control the double tapes to convey, which ensures the unidirectionality of the driving, avoids the synchronous matching difference in the case that two motors are employed to drive, reduces the dual function of tape slipping and tensioning the tape, prolongs service life of the tapes, reduces fault rate, and improves stability of the apparatus. 
     2. The double-tape banknote temporary storage device driven by a single motor also saves resources, reduces requirement for capacity of the apparatus, and reduces energy consumption of the apparatus. 
     3. The double-tape banknote temporary storage device is equipped with a clutch, which allows the apparatus to be maintained when power is off, allows trouble to be shot rapidly and more efficient, and facilitates maintenance. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view showing the structure of a double-tape banknote temporary storage device according to a preferred embodiment of the present application; 
         FIG. 2A  is a schematic three-dimensional view showing the structure of a synchronous gear transmission system; 
         FIG. 2B  is a schematic three-dimensional sectional view of a first tape withdrawing reel assembly; 
         FIG. 2C  is a schematic three-dimensional sectional view of a second tape withdrawing reel assembly; 
         FIG. 3  is a schematic view showing the working principle of the synchronous gear transmission system; 
         FIG. 4  is a schematic perspective view showing the structure of a clutch in the case that an output shaft of a planetary gear decelerating motor is provided with the clutch according to another preferred embodiment of the present application; 
         FIG. 5  is a schematic sectional view showing the structure of the clutch in  FIG. 4 ; 
         FIG. 6  is a schematic view showing the structure of a gear side of the clutch, and mainly showing an engaging boss structure arranged on the gear side of the clutch in  FIG. 4 ; and 
         FIG. 7  is a schematic view showing that the clutch is assembled on the output shaft of the planetary gear decelerating motor and is in an engaged state. 
     
    
    
     DETAILED DESCRIPTION 
     For further illustrating the double-tape banknote temporary storage device according to the present application, the present application is further described in detail with reference to an illustration of a preferred embodiment of the present application. 
       FIG. 1  is a schematic view showing the structure of a double-tape banknote temporary storage device according to a preferred embodiment of the present application. The double-tape banknote temporary storage device includes a banknote temporary storage reel  1 , a pair of tape withdrawing reel assemblies  2 , two tapes  4 , a pair of tape pressing wheels  5  and a planetary gear decelerating motor  3 . With reference to  FIGS. 2A and 3 , the banknote temporary storage reel  1  is configured to wind the pair of tapes  4  with banknotes stored therebetween, and the pair of tape withdrawing reel assemblies are located respectively at two sides of the banknote temporary storage reel, and are each configured to wind an individual tape after banknotes are released. For ease of distinguishing the pair of tape withdrawing reel assemblies, the pair of tape withdrawing reel assemblies  2  are respectively indicated as  21  and  22  in  FIGS. 2A and 3 . Referring to  FIG. 2B , the first tape withdrawing reel assembly  21  includes a first counterclockwise one-way drive gear  211 , a first clockwise one-way bearing fixing seat  212 , a first torsion limiter  213 , a first rotating shaft  214  and a first tape withdrawing reel  215 . Specifically, an inner ring of the first torsion limiter  213  is fixed onto the first rotating shaft  214  by a cylindrical pin, and a pin key on an outer ring of the first torsion limiter  213  is engaged with a pin key on an inner ring of the first tape withdrawing reel  215 . The first clockwise one-way bearing fixing seat  212  is arranged at the right of the first torsion limiter  213 , an inner ring of the first clockwise one-way bearing fixing seat  212  is sleeved on the first rotating shaft  214 , and an outer ring of the first clockwise one-way bearing fixing seat  212  is fixed to a sheet metal side plate. The first counterclockwise one-way drive gear  211  is arranged at the right of the first clockwise one-way bearing fixing seat  212 . An inner ring of the first counterclockwise one-way drive gear  211  is sleeved on the first rotating shaft  214  and the first counterclockwise one-way drive gear  211  is engaged with a gear  711  in a synchronous gear transmission system. The second tape withdrawing reel assembly  22  has the same structure with the first tape withdrawing reel assembly  21 . As shown in  FIG. 2C , the second tape withdrawing reel assembly  22  includes a second counterclockwise one-way drive gear  221 , a second clockwise one-way bearing fixing seat  222 , a second torsion limiter  223 , a second rotating shaft  224  and a second tape withdrawing reel  225 . Specifically, an inner ring of the second torsion limiter  223  is fixed onto the second rotating shaft  224  by a cylindrical pin, and a pin key on an outer ring of the second torsion limiter  223  is engaged with a pin key on an inner ring of the second tape withdrawing reel  225 . The second clockwise one-way bearing fixing seat  222  is arranged at the right of the second torsion limiter  223 , an inner ring of the second clockwise one-way bearing fixing seat  222  is sleeved on the second rotating shaft  224 , and an outer ring of the second clockwise one-way bearing fixing seat  222  is fixed to a sheet metal side plate. The second counterclockwise one-way drive gear  221  is arranged at the right of the second clockwise one-way bearing fixing seat  222 . An inner ring of the second counterclockwise one-way drive gear  221  is sleeved on the second rotating shaft  224  and the second counterclockwise one-way drive gear  221  is engaged with a gear  721  in the synchronous gear transmission system. Two ends of the pair of tapes align with each other and are fixed onto the banknote temporary storage reel  1 , and another two ends of the pair of tapes are fixed respectively onto the pair of tape withdrawing reel assemblies  21  and  22 . The pair of tape pressing wheels are located between the banknote temporary storage reel  1  and respective tape withdrawing reel assemblies  2  for pressing the two ends, close to the banknote temporary storage reel  1 , of the pair of tapes  4  to approach each other and forming a stretch of double-tape conveying passage. A driving gear  61  is provided on an output shaft  6  of the planetary gear decelerating motor  3 . Power of the planetary gear decelerating motor  3  is transmitted to the banknote temporary storage reel  1  and the pair of tape withdrawing reels  2  by the synchronous gear transmission system, and the synchronous gear transmission system includes: a first gear  11  configured to drive the banknote temporary storage reel  1 , a first transmission gear set  71  engaged with the driving gear  61 , and a second transmission gear set  72  connecting the first gear  11  and the second counterclockwise one-way drive gear  221 . 
     Specifically, as shown in  FIGS. 2A and 3 , the first transmission gear set  71  includes a coaxial gear set and a first transmission gear  713 . The coaxial gear set includes a large gear  711  and a small gear  712  which are arranged coaxially. The large gear  711  is engaged with the driving gear  61  and is also engaged with the first counterclockwise one-way drive gear  211 , so as to transmit power of the driving gear  61  to the first counterclockwise one-way drive gear  211  and further drive the first tape withdrawing reel assembly  21  to rotate. 
     Meanwhile, the first transmission gear  713  is located between the small gear  712  and the first gear  11 , and is engaged with respectively the small gear  712  and the first gear  11 , so as to transmit the power of the driving gear  61  to the first gear  11  and further drive the banknote temporary storage reel  1  to rotate. 
     In addition, the second transmission gear set  72  includes a second coaxial gear set and a second transmission gear  723 . The second coaxial gear set includes a second large gear  721  and a second small gear  722  which are coaxially arranged. The second small gear  722  is engaged with the second transmission gear  723 , the second transmission gear  723  is also engaged with the first gear  11 , and the second large gear  721  is engaged with the second counterclockwise one-way drive gear  221  so as to transmit the power of the driving gear  61  to the second counterclockwise one-way drive gear  221  and further drive the second tape withdrawing reel assembly  22  to rotate. 
     Preferably, the first transmission gear set  71  and the second transmission gear set  72  are two-stage decelerating gears, which have a function of decelerating and torque increasing and can reduce the load of the motor effectively. 
     The working principle of the double-tape banknote temporary storage device is described hereinafter. As shown in  FIG. 3 , the planetary gear decelerating motor  3  drives the banknote temporary storage reel  1  and the two tape temporary storage reels  2  to move synchronously via the synchronous gear transmission system. In the case that the banknote temporary storage reel  1  rotates counterclockwise, with reference to  FIGS. 2B, 2C, and 3 , the first counterclockwise one-way drive gear  211  rotates clockwise, and the first counterclockwise one-way drive gear  211  slips with respect to the first rotating shaft  214 , and the first counterclockwise one-way drive gear  211  does not transmit torque, similarly, the second clockwise one-way drive gear  221  does not transmit torque. The two tape temporary storage reel assemblies  2  rotate clockwise synchronously under the action of the drawing force of the tapes and uncoil the tapes  4 , and the double tapes  4  are received on the banknote temporary storage reel  1 . In the case that a banknote enters the tape passage, the banknote will be held by the double tapes  4  and wound on the banknote temporary storage reel  1  in a ring-shape for achieving the function of banknote temporary storage. Contrarily, in the case that the banknote temporary storage reel  1  rotates clockwise, the first counterclockwise one-way drive gear  211  rotates counterclockwise, the first counterclockwise one-way drive gear  211  drives the first rotating shaft  214  to rotate counterclockwise, and the first rotating shaft  214  transmits the torque to the first tape withdrawing reel  215  via the first torsion limiter  213 . The first tape withdrawing reel  215  rotates counterclockwise to withdraw the tape, in this process, since the first rotating shaft  214  and the first tape withdrawing reel  215  have an instantaneous linear velocity difference with each other, causing instantaneous slipping of the inner ring and the outer ring of the first torsion limiter  213 , and the instantaneous slipping friction torque caused by the sipping will compensate torque difference caused by the linear velocity difference, which allows the linear velocities of two ends of the tapes  4  to be synchronous. By this principle, two tape withdrawing reel assemblies  21  and  22  withdraw the double tapes  4  at the same time, and the banknotes are held by the double tapes  4  and are conveyed out of the tape passage. 
     As another preferred embodiment according to the present application, a clutch  8  is provided on the output shaft  6  of the planetary gear decelerating motor  3  for achieving engagement and disengagement between the output shaft  6  of the planetary gear decelerating motor and the synchronous gear transmission system. In this embodiment, the clutch  8  replaces the driving gear  61  in the embodiment described previously, and other parts are the same with the embodiment described previously. In normal working condition, the working manner of this embodiment is completely the same with the above embodiment. However, when power is off and the apparatus is stopped, the output shaft of the planetary gear decelerating motor may be separated from the gear at an input end of the synchronous gear transmission system by the clutch, therefore, the synchronous gear transmission system may be driven by an manual operation, thereby performing maintenance of the double-tape banknote temporary storage device when power is off. 
     Specifically, as shown in  FIG. 4 , the clutch includes a clutch gear  81 , a split washer  82  and a hollow clutch movable shaft  83 . As shown in  FIG. 5 , the clutch gear  81  is sleeved on the clutch movable shaft  83 , and is axially limited on the clutch movable shaft  83  by the split washer  82  and a retaining edge of the clutch movable shaft  83 . Referring to  FIGS. 6 and 4 , an engaging boss structure  811  is provided at one side of the clutch gear  81 , and the clutch gear  81  is rotatable freely on the clutch movable shaft  83 , and an inner surface of the clutch movable shaft  83  is provided with screw threads  831 . Referring again to  FIG. 7 , a clutch engaging block  9  is further provided on the output shaft  6  of the planetary gear decelerating motor, and the clutch  8  is secured onto the output shaft  6  of the planetary gear decelerating motor by the screw threads  831  on the inner surface of the clutch movable shaft  83 , and the clutch  8  is engaged with the clutch engaging block  9  by the engaging boss structure  811  on one side of the clutch gear  81 , thereby achieving torque transmission. That is, in the case that the clutch  8  is engaged with the clutch engaging block  9  and the planetary gear decelerating motor  3  rotates, the output shaft  6  rotates, and the clutch gear  81  is driven to rotate. The clutch gear  81  is just equivalent to the driving gear  61  in the above embodiment. In the case that the clutch gear  81  rotates, the gear at the input end of the synchronous gear transmission system is driven to rotate, thus by the transmission of the synchronous gear transmission system, the banknote temporary storage reel  1  and the tape temporary storage reel  2  are simultaneously driven to rotate, which achieves the functions of temporary storage or output of banknotes. 
     In the case that the clutch movable shaft  83  on the clutch  8  is rotated by an manual operation, the clutch  8  moves outwards along a thread path of the clutch  8 , which allows the gear  81  on the clutch  8  to be disengaged from the clutch engaging block  9 , thus separating the output shaft  6  of the planetary gear decelerating motor  3  from the synchronous gear transmission system. In this case, the synchronous gear transmission system may be driven by the manual operation, which allows the apparatus to be maintained when power is off, allows trouble to be shot rapidly and more efficient, and facilitates maintenance. 
     The above description is only preferred embodiments of the present application. It should be noted that, the above preferred embodiments should not be deemed as a limitation to the present application, and the scope of the present application is defined by the claims of the present application. For the person skilled in the art, several improvements and modifications may be made to the present application without departing from the spirit and scope of the present application, and these improvements and modifications are also deemed to fall into the scope of the present application.