Patent Publication Number: US-2018050759-A1

Title: Bicycle pedal

Description:
FIELD OF THE INVENTION 
     The present invention relates to a bicycle pedal which is assembled easily and randomly. 
     BACKGROUND OF THE INVENTION 
     A conventional bicycle pedal is coupled with a connection shaft, wherein the connection shaft does not pass through the bicycle pedal and is locked with a crank, hence two planes are arranged on a large-diameter position of the connection shaft, and the two planes are rotated by a hand tool to lock with a crank. 
     However, the large-diameter position of the connection shaft is adjacent to the crank, so an operation space to the hand tool is narrow. Furthermore, a span between two bicycle pedals is fixed and cannot be adjusted based on using requirements. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a bicycle pedal which is assembled easily and randomly. 
     To obtain above-mentioned objective, a bicycle pedal provided by the present invention contains: a body, a plurality of self-lubricating bearings, a connection shaft, a tapered sleeve, and a threaded sleeve. 
     The body includes a through hole passing through the body so as to accommodate a connection shaft. 
     The connection shaft includes a first taper section and a first screwing section which are formed on a first end of the connection shaft so as to fit with a tapered sleeve and a threaded sleeve. 
     A second taper section of the tapered sleeve mates with the first tapered section of the connection shaft. 
     The threaded sleeve includes a second screwing section arranged on an inner wall thereof so as to screw with the first screwing section of the connection shaft, and the threaded sleeve pushing the tapered sleeve. 
     The body of fixed size cooperates with the tapered sleeve of fixed size, multiple connection shafts of various sizes, and multiple threaded sleeves of various sizes so as to adjust a span of the bicycle pedal, and the connection shaft is in connection with the body, hence degree of freedom of the body is maintained, and the body is not locked. 
     When the tapered sleeve reaches a locking point, it faces to a first side face of the body and keeps a gap from an adjacent face of the body, such that the body is not locked by way of the gap, the body keeps its degree of freedom, a freed end of the body is coupled with an orifice of the connection shaft, and the connection shaft is locked with a crank of a bicycle. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the assembly of a bicycle pedal according to a first embodiment of the present invention. 
         FIG. 2  is a perspective view showing the exploded components of the bicycle pedal according to the first embodiment of the present invention. 
         FIG. 3A to 3D  are a cross sectional view showing the operation of the bicycle pedal according to the first embodiment of the present invention. 
         FIG. 4A to 4D  are a cross sectional view showing the operation of the bicycle pedal according to a second embodiment of the present invention. 
         FIG. 5  is an amplified cross sectional view of a part of  FIG. 3A . 
         FIG. 6  is an amplified cross sectional view of a part of  FIG. 4D . 
         FIG. 7  is a perspective view showing the application of the bicycle pedal according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to  FIGS. 1-3D, 5, and 7 , a bicycle pedal according to a first embodiment of the present invention comprises: a body  10 , a plurality of self-lubricating bearings  20 , a connection shaft  30 , a tapered sleeve  40 , and a threaded sleeve  50 . 
     The body  10  includes a through hole  11  passing through the body  10  so as to accommodate the plurality of self-lubricating bearings  20 , a first washer  31 , and the connection shaft  30 . 
     The connection shaft  30  includes a first taper section  32  and a first screwing section  33  which are formed on a first end of the connection shaft  30  so as to fit with a second washer  34 , the tapered sleeve  40 , and the threaded sleeve  50 . 
     A second taper section  41  of the tapered sleeve  40  mates with the first tapered section  32  of the connection shaft  30 . 
     The threaded sleeve  50  includes a second screwing section  51  arranged on an inner wall thereof so as to screw with the first screwing section  33  of the connection shaft  30 , wherein the threaded sleeve  50  pushes the tapered sleeve  40 . 
     Thereby, the body  10  of fixed size cooperates with the tapered sleeve  40  of fixed size, multiple connection shafts  30  of various sizes, and multiple threaded sleeves  50  of various sizes so as to adjust a span of the bicycle pedal (as shown in  FIGS. 3A to 3D ), and the connection shaft  30  is in connection with the body  10 , hence degree of freedom of the body  10  is maintained, and the body  10  is not locked. 
     In operation, when the tapered sleeve  40  reaches a locking point A, it faces to a first side face  42  of the body  10  and keeps a gap X from an adjacent face  70  of the body  10 , such that the body  10  is not locked by way of the gap X, and the body  10  keeps its degree of freedom, as illustrated in  FIG. 5 . A freed end  12  of the body  10  is coupled with an orifice  35  of the connection shaft  30 , the connection shaft  30  is locked with a crank  821  of a bicycle  82 , and a space beside the free end  12  of the body  10  is wide so that a hand tool  81  operates easily and randomly, as shown in  FIG. 7 . 
     Between the body  10  and the tapered sleeve  40  is defined the second washer  34 , and the adjacent face  70  is a second side face  341  of the second washer  34 . 
     The adjacent face  70  is a peripheral face of each of the plurality of self-lubricating bearings  20 . 
     Referring to  FIGS. 3A to 3D , the multiple connection shafts  30  of the various sizes includes a short connection shaft, a medium connection shaft, a long connection shaft, and a longest connection shaft, wherein the body  10  and the tapered sleeve  40  are in a fixed size. 
     The multiple threaded sleeves  50  of the various sizes includes a short threaded sleeve, a medium threaded sleeve, a long threaded sleeve, and a longest threaded sleeve, wherein the threaded sleeve  50  is connected with a short-span body  91 , as shown in  FIG. 3A . The threaded sleeve  50  is connected with a medium-span body  92 , as illustrated in  FIG. 3B . The threaded sleeve  50  is coupled with a long-span body  93 , as shown in  FIG. 3C . The threaded sleeve  50  is coupled with a longest-span body  94 , as shown in  FIG. 3D . 
     With reference to  FIGS. 1-4D, 6, and 7 , a bicycle pedal for according to a second embodiment of the present invention comprises: a body  10 , a plurality of self-lubricating bearings  20 , a connection shaft  30 , a tapered sleeve  40 , a threaded sleeve  50 , and an adjustable sleeve  60 . 
     The body  10  includes a through hole  11  passing through the body  10  so as to accommodate the plurality of self-lubricating bearings  20 , a first washer  31 , and the connection shaft  30 . 
     The connection shaft  30  includes a first taper section  32  and a first screwing section  33  which are formed on a first end of the connection shaft  30 , wherein a second washer  34 , the adjustable sleeve  60 , the tapered sleeve  40 , and the threaded sleeve  50  are fitted with the first end of the connection shaft  30 . 
     A second taper section  41  of the tapered sleeve  40  mates with the first tapered section  32  of the connection shaft  30 . 
     The threaded sleeve  50  includes a second screwing section  51  arranged on an inner wall thereof so as to screw with the first screwing section  33  of the connection shaft  30 , wherein the threaded sleeve  50  pushes the tapered sleeve  40 . 
     Thereby, the body  10  of fixed size cooperates with the tapered sleeve  40  of fixed size, multiple connection shafts  30  of various sizes, multiple threaded sleeves  50  of various sizes, and multiple adjustable sleeves  60  of various sizes so as to adjust a span of the bicycle pedal (as shown in  FIGS. 4A to 4D ), and the connection shaft  30  is connected with the body  10 , hence degree of freedom of the body  10  is maintained, and the body  10  not locked. 
     In operation, when the tapered sleeve  40  reaches a locking point A, it faces to a first side face  42  of the body  10  and keeps a gap X from an adjacent face  70  of the body  10 , such that the body  10  is not locked by way of the gap X, and the body  10  keeps its degree of freedom, as illustrated in  FIG. 6 . A freed end  12  of the body  10  is coupled with an orifice  35  of the connection shaft  30 , the connection shaft  30  is locked with a crank  821  of a bicycle  82 , and a space beside the free end  12  of the body  10  is wide so that a hand tool  81  operates easily and randomly, as shown in  FIG. 7 . 
     Between the body  10  and the tapered sleeve  40  is defined a second washer  34 , and the adjacent face  70  is a second side face  341  of the second washer  34 . 
     The adjacent face  70  is a third side face  61  of each of the multiple adjustable sleeves  60 . 
     Referring to  FIGS. 4A to 4D , the multiple connection shafts  30  of the various sizes includes a short connection shaft, a medium connection shaft, a long connection shaft, and a longest connection shaft, wherein the body  10 , the threaded sleeve  50 , and the tapered sleeve  40  are in a fixed size. 
     The multiple adjustable sleeves  60  of the various sizes includes a medium adjustable sleeve, a long adjustable sleeve, and a longest adjustable sleeve, wherein the adjustable sleeve  60  is not connected with a short-span body  95 , as shown in  FIG. 4A . The adjustable sleeve  60  is connected with a medium-span body  96 , as shown in  FIG. 4B . The adjustable sleeve  60  is in connection with a long-span body  97 , as illustrated in  FIG. 4C . The adjustable sleeve  60  is coupled with a longest-span body  98 , as shown in  FIG. 4D . 
     Accordingly, the span of the bicycle pedal is adjustable so as to maintain the degree of freedom of the body, and the body is not locked. Preferably, the space beside the free end of the body is wide so that the hand tool operates easily and randomly. 
     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.