Patent Publication Number: US-9840383-B2

Title: Paper money distributing device and reversing wheel set thereof

Description:
This application is the national phase of International Application No. PCT/CN2015/086314, titled “PAPER MONEY DISTRIBUTING DEVICE AND REVERSING WHEEL SET THEREOF”, filed on Aug. 7, 2015, which claims the benefit of priority to Chinese patent application No. 201410613992.5 titled “BANKNOTE SEPARATING DEVICE AND REVERSE WHEEL SET THEREOF”, filed with the Chinese State Intellectual Property Office on Nov. 3, 2014, the entire disclosures of which are incorporated herein by reference. 
     FIELD 
     The present application relates to the technology of financial self-service equipment, and particularly to a banknote separating device and a method for fixing a one-way bearing of a reverse wheel set of the banknote separating device. 
     BACKGROUND 
     Currently, a one-way bearing is generally used in banknote separating mechanisms of financial equipment, and functions to restrict a banknote separating reverse wheel from rotating in a banknote-feeding direction, and only allow the banknote separating reverse wheel to rotate in a direction opposite to the banknote-feeding direction. 
     Currently, one-way bearings are generally fixed by a way shown in  FIG. 1 . The reverse wheel set includes a reverse wheel rotating shaft  1 , a reverse wheel fixing frame  2 , an E-shaped snap ring  3 , a one-way bearing housing  4 , a one-way bearing  5 , a flanged bearing  6 , a reverse wheel assembly  7  and a spacer  8 . The way for fixing the one-way bearing  5  may be understood as follows. The reverse wheel rotating shaft  1 , the reverse wheel fixing frame  2 , the one-way bearing housing  4 , the one-way bearing  5 , an outer ring of the flanged bearing  6 , and the spacer  8  are each a stationary end, and the reverse wheel assembly  7 , the E-shaped snap ring, and an inner ring of the flanged bearing  6  are each a movable end. 
     In this fixing way, an end surface of the E-shaped snap ring of the movable end will squeeze and contact with an end surface of the one-way bearing  5  of the stationary end, thereby generating a friction resistance, which restricts the reverse wheel assembly  7  from rotating freely. If the friction resistance is too large, the reverse wheel assembly  7  even cannot rotate. In case that the reverse wheel assembly  7  rotates unsmoothly or is incapable of rotation, a rubber portion of the reverse wheel assembly is apt to be partially abraded, which may enlarge a banknote separating gap. This defect, in a less severe case, may cause that the service life of the banknote separating device is significantly reduced and the banknote separating gap needs to be frequently adjusted, and in a severe case, may cause failure of the banknote separating function, which cannot meet the design requirement. 
     SUMMARY 
     For eliminating the defects in the conventional technology that the reverse wheel assembly rotates unsmoothly or is incapable of rotation due to the friction resistance, a banknote separating device is provided according to the present application, in which, a one-way bearing of a reverse wheel set of the banknote separating device is fixed by a new way, which effectively achieves separation of movement of a stationary end from movement of a movable end in the one-way bearing, thereby prolonging the service life of the banknote separating device and ensuring the reliability of its function. 
     The banknote separating device according to the present application is applicable for a financial self-service equipment, the banknote separating device includes a banknote separating wheel set and a reverse wheel set for cooperating with the banknote separating wheel set, and the reverse wheel set includes a reverse-wheel-set rotating shaft, a reverse wheel fixing frame, and a reverse wheel assembly. One end of the reverse wheel assembly sequentially passes through an E-shaped snap ring, a flanged bearing, a one-way bearing stop ring and a one-way bearing to be mounted to the reverse wheel fixing frame, wherein the one-way bearing and the reverse wheel fixing frame are coupled by the one-way bearing stop ring to form a stationary rigid body, and the one-way bearing stop ring is in contact with only an outer ring of the flanged bearing. 
     Preferably, an outer peripheral surface of the one-way bearing stop ring is provided with a protruding strip extending in an axial direction of the one-way bearing stop ring, the reverse wheel fixing frame is provided with a groove for fitting with the protruding strip, and in an assembled state, the protruding strip of the one-way bearing stop ring is embedded into the groove of the reverse wheel fixing frame. 
     Preferably, one end of the protruding strip protrudes from a first side of the one-way bearing stop ring, an outer peripheral surface of the one-way bearing is provided with a groove for fitting with the protruding strip, and in the assembled state, the one-way bearing is located at the first side of the one-way bearing stop ring, and an end, protruding from the first side of the one-way bearing stop ring, of the protruding strip is embedded into the groove in the outer peripheral surface of the one-way bearing. 
     Preferably, the one-way bearing stop ring includes a second side opposite to the first side, an outer peripheral portion of the second side is configured as a flange, and in the assembled state, the flanged bearing is located at the second side of the one-way bearing stop ring, and the flange is in contact with the outer ring of the flanged bearing. 
     Preferably, another end of the reverse wheel assembly sequentially passes through an E-shaped snap ring, a flanged bearing, and a spacer to be mounted to the reverse wheel fixing frame. 
     A reverse wheel set is further provided according to the present application, which is applicable for a banknote separating device of a financial self-service equipment, the reverse wheel set includes a reverse-wheel-set rotating shaft, a reverse wheel fixing frame, and a reverse wheel assembly. One end of the reverse wheel assembly sequentially passes through an E-shaped snap ring, a flanged bearing, a one-way bearing stop ring and a one-way bearing to be mounted to the reverse wheel fixing frame, wherein the one-way bearing and the reverse wheel fixing frame are coupled by the one-way bearing stop ring to form a stationary rigid body, and the one-way bearing stop ring is in contact with only an outer ring of the flanged bearing. 
     Preferably, an outer peripheral surface of the one-way bearing stop ring is provided with a protruding strip extending in an axial direction of the one-way bearing stop ring, the reverse wheel fixing frame is provided with a groove for fitting with the protruding strip, and in an assembled state, the protruding strip of the one-way bearing stop ring is embedded into the groove of the reverse wheel fixing frame. 
     Preferably, one end of the protruding strip protrudes from a first side of the one-way bearing stop ring, an outer peripheral surface of the one-way bearing is provided with a groove for fitting with the protruding strip, and in the assembled state, the one-way bearing is located at the first side of the one-way bearing stop ring, and an end, protruding from the first side of the one-way bearing stop ring, of the protruding strip is embedded into the groove in the outer peripheral surface of the one-way bearing. 
     Preferably, the one-way bearing stop ring includes a second side opposite to the first side, an outer peripheral portion of the second side is configured as a flange, and in the assembled state, the flanged bearing is located at the second side of the one-way bearing stop ring, and the flange is in contact with the outer ring of the flanged bearing. 
     Preferably, another end of the reverse wheel assembly sequentially passes through an E-shaped snap ring, a flanged bearing, and a spacer to be mounted to the reverse wheel fixing frame. 
     In the banknote separating device according to the present application, one end of the reverse wheel assembly sequentially passes through an E-shaped snap ring, a flanged bearing, a one-way bearing stop ring and a one-way bearing to be mounted to the reverse wheel fixing frame. The reverse-wheel-set rotating shaft, the reverse wheel fixing frame, the one-way bearing stop ring, the one-way bearing and the outer ring of the flanged bearing constitute a stationary end, and the reverse wheel assembly, the E-shaped snap ring and the inner ring of the flanged bearing constitute a movable end. Due to the arrangement of the one-way bearing stop ring, the movements of the stationary end and the movable end of the one-way bearing are separated. Specifically, the protruding strip on the one-way bearing stop ring is embedded respectively into the groove in the reverse wheel fixing frame and the groove in the one-way bearing, thus the one-way bearing, the one-way bearing stop ring and the reverse wheel fixing frame are coupled to form a stationary rigid body. Further, the one-way bearing stop ring is in contact with only the outer ring of the flanged bearing by its protruding strip, thus the whole stationary end can be prevented from generating any friction with the movable end, which achieves the separation of the stationary end from the movable end, and thereby the reverse wheel assembly can rotate freely and smoothly without being subjected to any friction resistance during the rotation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For more clearly illustrating embodiments of the present application or the technical solutions in the conventional technology, drawings referred to describe the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings in the following description are only some examples of the present application, and for the person skilled in the art, other drawings may be obtained based on these drawings without any creative efforts. 
         FIG. 1  is a schematic perspective exploded view showing the structure of a reverse wheel set in the conventional technology; 
         FIG. 2  is a schematic perspective view showing the structure of a reverse wheel set according to a preferred embodiment of the present application; 
         FIG. 3  is a sectional view of the reverse wheel set in  FIG. 2  taken along line A-A; 
         FIG. 4  is an enlarged view of part B in  FIG. 3 ; 
         FIG. 5  is an exploded view of the reverse wheel set in  FIG. 2 ; 
         FIG. 6  is a schematic perspective view showing the structure of a one-way bearing stop ring in  FIG. 5 ; 
         FIG. 7  is a schematic perspective view showing the structure of a reverse wheel fixing frame in  FIG. 5 ; 
         FIG. 8  is a schematic perspective view showing the structure of a one-way bearing in  FIG. 5 ; and 
         FIG. 9  is a schematic perspective view showing the structure of a flanged bearing in  FIG. 5 . 
     
    
    
     DETAILED DESCRIPTION 
     For further elaborating a banknote separating device and a method for fixing a one-way bearing of a reverse wheel set of the banknote separating device according to the present application, an embodiment of the present application is described in detail in conjunction with drawings. 
     The banknote separating device according to this embodiment includes a banknote separating wheel set and a reverse wheel set cooperating with the banknote separating wheel set. Since the banknote separating device according to this embodiment is characterized in the reverse wheel set, only the structure of the reverse wheel set is described in detail in this embodiment. Referring to  FIGS. 2 to 5 , the reverse wheel set  10  includes a reverse-wheel-set rotating shaft  11 , a reverse wheel fixing frame  12  and a reverse wheel assembly  17 . One end of the reverse wheel assembly  17  sequentially passes through an E-shaped snap ring  13 , a flanged bearing  14 , a one-way bearing stop ring  15  and a one-way bearing  16  to be mounted to the reverse wheel fixing frame  12 . Another end of the reverse wheel assembly  17  sequentially passes through an E-shaped snap ring  13 , a flanged bearing  14  and a spacer  18  to be mounted to the reverse wheel fixing frame. The one-way bearing  16  and the reverse wheel fixing frame  12  are coupled by the one-way bearing stop ring  15  to form a stationary rigid body, and the one-way bearing stop ring  15  is in contact with only an outer ring of the flanged bearing  14 . 
     In this embodiment, as shown in  FIGS. 6 and 7 , an outer peripheral surface of the one-way bearing stop ring  15  is provided with a protruding strip  151  extending in an axial direction of the one-way bearing stop ring, and the reverse wheel fixing frame  12  is provided with a groove  121  for fitting with the protruding strip. In an assembled state, as shown in  FIG. 4 , the protruding strip  151  of the one-way bearing stop ring  15  is embedded into the groove  121  of the reverse wheel fixing frame  12 . One end of the protruding strip  151  protrudes from a first side of the one-way bearing stop ring  15 , and an outer peripheral surface of the one-way bearing  16  is provided with a groove  161  for fitting with the protruding strip  151 , as shown in  FIG. 8 . In an assembled state, the one-way bearing  16  is located at the first side of the one-way bearing stop ring  15 , and the end, protruding from the first side of the one-way bearing stop ring  15 , of the protruding strip  151  is embedded into the groove  161  in the outer peripheral surface of the one-way bearing  16 . With the arrangement of the protruding strip  151 , the one-way bearing stop ring  15  couples the one-way bearing  16  and the reverse wheel fixing frame  12  to form the stationary rigid body. The design of the protruding strip may be equivalently varied, which is not limited to the structure illustrated in the drawings. 
     In addition, the one-way bearing stop ring  15  includes a second side opposite to the first side, and an outer peripheral portion at the second side is configured as a flange  152 . In an assembled state, the flanged bearing  14  is located at the second side of the one-way bearing stop ring  15 , and the flange  152  is in contact with the outer ring of the flanged bearing  14 , and reference may be made to  FIG. 4 . The flanged bearing  14  includes an inner ring  141  and an outer ring  142 , as shown in  FIG. 9 . With the design of the flange  152 , the one-way bearing stop ring  15  is in contact with the outer ring of the flanged bearing  14 . 
     In this embodiment, the reverse-wheel-set rotating shaft  11 , the reverse wheel fixing frame  12 , the one-way bearing stop ring  15 , the one-way bearing  16  and the outer ring  142  of the flanged bearing constitute a stationary end. The reverse wheel assembly  17 , the E-shaped snap ring  13  and the inner ring  141  of the flanged bearing constitute a movable end. The reverse wheel assembly  17  can only rotate in a direction opposite to a banknote-feeding direction under the action of the one-way bearing  16 . Under the action of the flange  152 , the one-way bearing stop ring  15  is in contact with only the outer ring of the flanged bearing  14 , which allows the stationary end to be separated from the movable end by using the principle that the movements of the inner ring and the outer ring of the flanged bearing  14  are separated, thus, no friction is generated between the stationary end and the movable end, which ensures a free and smooth rotation of the reverse wheel assembly  17 , thereby improving the service life of the banknote separating device and ensuring the reliability of its function. 
     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.