Abstract:
A structural improvement for a contact pin, in which a contact pin is provided with a main body, from one end of which extends a connecting portion, and a contact portion extends from the other end. The contact portion is provided with tapered sections which form a terminal. Accordingly, when using the contact pin, combination of the tapered sections and the terminal of the contact portion enables accommodating electrical portions of different types of batteries and forming a corresponding electrical contact therewith, thereby achieving practical advancement enabling universal use of the single contact pin to accommodate many kinds of specifications.

Description:
BACKGROUND OF THE INVENTION 
     (a) Field of the Invention 
     The present invention provides a contact pin, and more particular provides a structural improvement for a contact pin to enable accommodating electrical portions of different types of batteries and form electrical contact with the contact pin. 
     (b) Description of the Prior Art 
     Regardless of the portable electronic product, including digital cameras, mobile phones, notebook computers, hand-held amusement games, and the like, batteries are contained inside all such portable electronic products, and the required electric power is supplied via the batteries when the portable electronic product is running. 
     Technological progress and respect for environmental consciousness has brought about the development in battery technology. The early carbon-zinc dry cell batteries have given way to nickel cadmium batteries, nickel hydrogen batteries, lithium sulfur batteries or lithium batteries as the electric power source. Apart from being of small size and light, the new types of batteries are provided with the characteristic of being rechargeable during use. Hence, many portable electronic products have placed within them either nickel cadmium batteries, nickel hydrogen batteries, lithium sulfur batteries or lithium batteries complying with their respective specifications, and are used as the electric power source thereof. 
     When the electric power of the nickel cadmium batteries, nickel hydrogen batteries, lithium sulfur batteries or lithium batteries is exhausted, the batteries can be taken out of the electronic product and recharged using an external recharging device, generally known as a battery charger. A recess of the battery charger is configured as a holding recess, within which is configured contact pins, thereby enabling electrical contact with electrical portions of a battery by means of the contact pins, after which the battery charger transmits external electric power to within the battery, and thus enable the battery to be fully recharged with electric power. 
     Referring to  FIG. 1 , which shows a combination schematic view  1  of a battery charger and a battery, and from the drawing it can be clearly seen that a battery charger A is configured with a holding recess A 0 , an inner wall of which is configured with a plurality of contact pins C. After a battery B is disposed within the holding recess A 0 , then each electrical portion D of the battery B forms an electrical contact with the respective contact pin C, thereby enabling the battery charger A to transmit external electric power, such as the mains power supply, to within the battery B. Furthermore, it can be seen from the drawing that the electrical portions D of the battery B are configured to be tabular, therefore shape of the contact pins C of the battery charger A are configured as protruding arcs or 90 degree turned V-shaped forms in order to match the tabular electrical portions D. 
     Referring to  FIG. 2 , which shows a combination schematic view  2  of a battery charger and a battery, and from the drawing it can be clearly seen that electrical portions D 1  of a battery B 1  are configured as tubular hollow cavities, therefore shape of contact pins C 1  of a battery charger A 1  are configured as columnar forms in order to match the tubular cavity shaped electrical portions D 1 . When the battery B 1  is disposed within a holding recess A 10  for charging thereof, then the contact pins C 1  are made to respectively penetrate within the electrical portions D 1  to form electrical contacts therewith. 
     Referring to  FIG. 3 , which shows a combination schematic view  3  of a battery charger and a battery, and from the drawing it can be clearly seen that electrical portions D 2  of a battery B 2  are configured as juxtaposed cavities, therefore shape of contact pins C 2  of a battery charger A 2  are configured as juxtaposed tabular strips in order to match the juxtaposed cavity shaped electrical portions D 2 . When the battery B 2  is disposed within a holding recess A 20  for charging thereof, then the contact pins C 2  are made to respectively penetrate within the electrical portions D 2  to form electrical contacts therewith. 
     Accordingly, from the above it can be known that different types of the battery B are used in different types of electronic devices, which results in the need for different types of the electrical portions D. Hence, manufacturers of the battery charger A must design different types of the contact pins C to enable the battery charger A to accommodate and charge the different batteries B. Hence, it is the strong desire of the inventor and manufacturers engaged in related art and purpose of the present invention to resolve and surmount existent technical difficulties to solve the aforementioned problems and shortcomings of the inability for universal use of the battery charger A resulting from the numerous specifications of the prior art contact pins. 
     SUMMARY OF THE INVENTION 
     A primary objective of the present invention is to provide a contact pin, one end of a main body of which extends a bent contact portion; the contact portion is tabular, two sides of which are respectively provided with a tapered section, and the junction of the tapered sections forms a terminal. Use of the aforementioned technology provides a breakthrough in overcoming existing problems of the inability for universal use of a battery charger resulting from the numerous specifications of the prior art contact pins, and achieves practical advancement in enabling the contact pins to accommodate electrical portions of different types of batteries and form electrical contacts therewith. 
     A second objective of the present invention is to provide one end of the main body of the contact pin with a connecting portion, and provide the other end with the contact portion, wherein the contact portion either assumes horizontality, perpendicularity or forms an angular difference height position with the connecting portion. Use of the aforementioned technology enables the contact portion to produce an elastic restoring displacement, which is able to produce tight elastic support, and achieves practical advancement not conceived of in the prior art contact pins. 
     To enable a further understanding of said objectives and the technological methods of the invention herein, a brief description of the drawings is provided below followed by a detailed description of the preferred embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a combination schematic view  1  of a battery charger of the prior art and a battery. 
         FIG. 2  shows a combination schematic view  2  of a battery charger of the prior art and a battery. 
         FIG. 3  shows a combination schematic view  3  of a battery charger of the prior art and a battery. 
         FIG. 4  shows an external elevational view of the present invention. 
         FIG. 5  shows a schematic view depicting movement of the present invention. 
         FIG. 6  shows a schematic view depicting a use mode of the present invention. 
         FIG. 7  shows a cutaway view  1  depicting a use mode of the present invention. 
         FIG. 8  shows a cutaway view  2  depicting a use mode of the present invention. 
         FIG. 9  shows a cutaway view  3  depicting a use mode of the present invention. 
         FIG. 10  shows an external elevational view  1  of a further embodiment according to the present invention. 
         FIG. 11  shows an external elevational view  2  of a further embodiment according to the present invention. 
         FIG. 12  shows external elevational views  3  of further embodiments according to the present invention. 
         FIG. 13  shows an external elevational view of a further embodiment according to the present invention. 
         FIG. 14  shows a schematic view depicting movement of the further embodiment according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to  FIGS. 4 ,  5 , which show a contact pin E provided with a main body E 1 , from one end of which extends a bent connecting portion E 11 . The connecting portion E 11  is able to electrically connect to a predetermined circuit board by means of welding, heat sealing or plugging in methods. 
     A bent contact portion E 2  extends from another end of the main body E 1 , and the contact portion E 2  is tabular and provided with tapered sections E 21 , from which extends a terminal E 22 . 
     After the connecting portion E 11  of the contact pin E is connected to the predetermined circuit board, because a horizontal height difference forms between the connecting portion E 11  and the contact portion E 2 , thus, when pressure is applied on the contact portion E 2  from an external force, such as the electrical portion of a battery, then a displacement is produced about the connecting portion E 11  and the bent portion of the main body E 1  serving as an axle center and the main body E 1  serving as a shaft lever, thereby causing elastic displacement of the main body E 1 . Moreover, because the main body E 1  is made from metal material, and thus provided with elasticity, under the aforementioned situation, elasticity of compression is produced when the main body E 1  and the bent portion of the connecting portion E 11  are subjected to an external force. 
     When the external force exerted on the contact portion E 2  is released, then the original elasticity of compression of the bent portion of the main body E 1  is also released from the connecting portion E 11 , thereby causing displacement of the main body E 1  which restores the contact portion E 2  to its original position. The aforementioned means enables producing elastic displacement of the contact portion E 2  of the contact pin E, and when in use, such elastic displacement is used to support a device connected thereto, such as the electrical portion of a battery. 
     Referring to  FIGS. 6 ,  7 , wherein a battery charger A is configured with a plurality of the contact pins E. The contact portion E 2  of each of the contact pins E penetrate an inner wall of a holding recess A 0 , thus, when a battery B is placed within the holding recess A 0  of the battery charger A, then electrical portions D of the battery B respectively form an electrical contact with the contact pins E, thereby enabling the battery charger A to transmit external electric power, such as the mains power supply, to within the battery B. Moreover, it can be seen form the drawings that the electrical portions D of the battery B are configured to be tabular, and that each of the contact pins E are provided with the terminal E 22 . Accordingly, when the contact portions E 2  of the contact pins E make contact with the electrical portions D, then the terminals E 22  form electrical contact with the electrical portions D, thereby enabling electric power from the battery charger A to be transmitted to the electrical portions D through the terminals E 22  of the contact pins E, and then transmitted to the within the battery B through the electrical portions D. The majority of batteries as exemplified by the battery B are used in electronic devices such as digital cameras, mobile phone, and the like. 
     Referring to  FIGS. 2 and 8 , in which it can be clearly seen from  FIG. 2  that electrical portions D 1  of a battery B 1  are tubular hollow cavities, and it can be seen from  FIG. 8  that when joining together the contact pins E of the present invention with the battery B 1  of  FIG. 2 , when each of the contact portions E 2  of the contact pins E provided with the tapered sections E 21  and the terminal E 22  make contact with the respective electrical portion D 1 , then the terminals E 22  first respectively pass into the interiors of the electrical portions D 1  until the tapered sections E 21  respectively make contact with the tubular walls of the electrical portions D 1 , after which the contact portions E 2  respectively form electrical contacts with the electrical portions D 1 . The majority of batteries as exemplified by the battery B 1  are used in electronic devices such as cameras, and the like. 
     Referring to  FIGS. 3 and 9 , in which it can be clearly seen from  FIG. 3  that electrical portions D 2  of a battery B 2  are juxtaposed cavities, and it can be seen from  FIG. 9  that when joining together the contact pins E of the present invention with the electrical portions D 2  of the battery B 2 , when the contact portions E 2  of the contact pins E respectively make contact with the electrical portions D 2 , then the tabular form of each of the contact portions E 2  enables complete retention within the respective electrical portions D 2 , thereby effecting electrical connections with the electrical portions D 2 . The majority of batteries as exemplified by the battery B 2  are used in electronic devices such as notebook computers, and the like. 
     Referring to  FIGS. 10 ,  11 , the connecting portion E 11  or the contact portion E 2  are configured either to extend parallel to, perpendicular to or extend to form an angular difference with the main body E 1  of the contact pin E. Moreover, either a horizontal form, a vertical form or an angular difference can be assumed between the connecting portion E 11  and the contact portion E 2 . Accordingly, a height difference is formed between the connecting portion E 11  and the contact portion E 2 , and after the contact portion E 2  is subjected to an external pressure, then a displacement is produced about the connecting portion E 11  serving as an axle center and the main body E 1  serving as a shaft lever, thereby causing elastic displacement of the main body E 1 . When the external force exerted on the contact portion E 2  is released, then the original elasticity of compression between the connecting portion E 11  and the main body E 1  is also released, thereby causing elastic restoring displacement of the main body E 1  which restores the contact portion E 2  to its original position. The aforementioned means enables producing elastic displacement of the contact portion E 2  of the contact pin E, and when in use, such elastic displacement is used to support a device connected thereto, such as the use modes as depicted in  FIGS. 6-9 . 
     Referring to  FIG. 12 , which shows that the main body E 1  of the contact pin E can be configured either to be columnar, tubular, lamellar or tabular shaped, and the contact portion E 2  can be configured to be either of tapered form, triangular shaped, diamond shaped, kite shaped or provided with at least three exterior edges to accommodate devices of different types, such as the use modes as depicted in  FIGS. 6-9 . 
     Referring to  FIGS. 13 ,  14 , which show the contact pin E provided with the main body E 1 , one end of which extends the connecting portion E 11 , and the contact portion E 2  extends from the other end, wherein the contact portion E 2  is tabular shaped and is provided with tapered sections E 21 . A terminal E 22  extends from the tapered sections E 21 . 
     In addition, an elastic section E 3  is located at an appropriate position of the main body E 1 , thus, when the contact portion E 2  is subjected to external pressure, then the elastic section E 3  is caused to deform, thereby producing elasticity of compression. After the external force on the contact portion E 2  is released, then the elasticity of compression of the elastic section E 3  is also released, thereby causing the contact portion E 2  to return to its original position. Accordingly, the contact pin E is able to achieve the functional effectiveness as depicted in  FIGS. 6-9 . 
     Hence, referring to all the drawings, advantages of the present invention are described as follows: 
     (1) The contact pin E is provided with the tabular shaped contact portion E 2 , and the contact portion E 2  is provided with the two tapered sections E 21 . Moreover, the terminal E 22  extends from the junction of the tapered sections E 21 , thereby achieving the practical advancement of enabling the contact pins E to accommodate the electrical portions D of different types of the battery B and effect an electrical contact therewith. 
     (2) Bending the main body of E 1  of the contact pin E establishes a height difference between the connecting portion E 11  and the contact portion E 2 , and the main body E 1  is used to produce elastic bending or elastic deformation, thereby enabling the contact portions E 2  to elastically support the electrical portions D of different types of the battery B and produce good electrical contact therewith. Moreover, after removing the battery B, the main body E 1  of each of the contact pins elastically restores their original state. 
     It is of course to be understood that the embodiments described herein are merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.