Abstract:
A coaxial connector has a strong structure to avoid structural distortion and looseness comprising a housing, a sliding support, an electric conducting block, a first conducting rod assembly, a first sealing support, a second conducting rod assembly, a second sealing support, a contact piece and a third sealing support, which takes an advantage of good electrical connection formed between the contact piece and the first conducting rod assembly through the electric conducting block to enhance the signal transmission function and to obtain a stable signal without distortion when the coaxial connector is switched from one direction to another direction to transmit signal.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The invention relates to a coaxial connector, more particularly to a coaxial connector with structural improvement capable of switching the transmission direction of electronic signal.  
         [0003]     2. Description of Prior Art  
         [0004]     Normally most of the conventional type connector can allow the electronic signal to be transmitted in only one direction. However there is also a coaxial connector for the aerial module of wireless local area network system which possesses the function of switching of the direction of signal transmission, and allows switching and changing the direction of signal transmission when the signal is transmitted through the connector.  
         [0005]     Shown in  FIGS. 1 and 2  is the structure of the conventional connector  10  which comprises a metal housing  11  forming grounding of the system with inner space arranged as switching control compartment  111  and butt connection opening  112 , an axial sliding support  13  and first sealing support  14  installed on both ends of the switching control compartment  111  for holding the conducting rod assembly  12  inside the switching control compartment  111 .  
         [0006]     The conducting rod assembly  12  comprises a movable conducting rod  121 , a fixed conducting rod  122  and an elastic restoring mechanism  123 , and by arranging the elastic restoring mechanism  123  between the movable conducting rod  121  and the fixed conducting rod  122  a movable connection with elastic restoring mechanism is formed.  
         [0007]     Moreover, the conducting rod assembly  12  is installed inside the switch control compartment  111  of the metal housing  11  in such a way that the movable conducting rod  12  is supported by, and can freely move inside the center hole of the axial sliding support  13  with its front part extended into the butt connection opening of the metal housing  11  to form the axially-movable signal input end of the conventional type coaxial connector  10 , and the fixed conducting rod  122  of the conducting rod assembly  12  is supported, and secured by the first sealing support  14  to form fixed state with its front part extended to the outside of the conventional type coaxial connector to form signal output end.  
         [0008]     This type of conventional coaxial connector  10  also has a contact pin  15  which, by employing the second sealing support  16 , has its upper part extended to the outside of the conventional type coaxial connector  10  to form another signal input end of the conventional type coaxial connector  10  while the lower part of the contact pin  15  extends to the inside of the switching control compartment  111  of the metal housing  11  to form electric contact with the conducting rod assembly  12 .  
         [0009]     This type of conventional coaxial connector has two ways of electric signal transmission. When there is no complementary connector  19  connected to the input end of the conventional coaxial connector  10  as shown in  FIG. 1 , the contact pin  15  and the conducting rod assembly  12  form electric connection, signal is transmitted from contact pin  15  to the fixed conducting rod  122 . However, when a complementary connector  19  is connected to the signal input end as shown in  FIG. 2 , the movable conducting rod  121  is pushed by the complementary conductor  19 , and moves backwardly that caused electric disconnection between the contact pin  15  and the conducting rod assembly  12 , and the signal is transmitted from the complementary connector  19  to the fixed conducting rod  122  through movable conducting rod  121 . By these ways the conventional type coaxial connector  10  has the function of switching the direction of signal transmission.  
         [0010]     However, owing to the drawback of poor structure strength caused by extending the contact pin  15  into the switching control compartment  111  of the metal housing  11  in the way of cantilever which is frequently bumped or pushed by the elastic restoring mechanism  123  of the conducting rod assembly  12  that always results in the damage of distortion and looseness of the contact pin  15 , particularly since the electric contact between the contact pin  15  and the conducting rod assembly  12  is in the form of cylindrical surface to flat surface which has a very small contact area, it always results in poor electrical connection quality, moreover, since the contact pin  15  is apt to distortion or looseness that will cause the drawbacks of unstable signal transmission and distorted signal of the conventional type coaxial connector  10 . In view of these drawbacks it is necessary to do further improvement of the conventional type coaxial connector  10 .  
       SUMMARY OF THE INVENTION  
       [0011]     In view of the above the major purpose of the invention is to provide an improvement of the structure of coaxial connector which comprises a housing, a sliding support, an electric conducting block, a first conducting rod assembly, a first sealing support, a second conducting rod assembly, a second sealing support, a contact piece and a third sealing support, particularly, by adopting the electric conducting block in the structure a flat-surface to flat-surface contact between the bottom side of the contact piece and the top side of the electric conducting block can be achieved that can also enable a more strong structure of the contact piece of the coaxial connector without being apt to the damage of distortion or looseness. Besides, since both of the side surfaces of the electric conducting block are flat surface, a good electric connection between electric conducting block and the first conducting rod assembly, as well as the contact piece can be achieved, and the damage of distortion or looseness of the contact piece caused by bumping and impact by the first conducting rod can be avoided, so that the performance of signal transmission of the coaxial connector can be enhanced and more stable signal transmission and switching without signal distortion can be obtained. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0012]      FIG. 1  is the sectional view along the longitudinal axis of the conventional type coaxial connector showing the structure of the connector.  
         [0013]      FIG. 2  is the sectional view along the longitudinal axis of the conventional type coaxial connector connected to a complementary connector showing that the conventional coaxial connector possesses the function of switching the direction of signal transmission through the coaxial connector.  
         [0014]      FIG. 3  is the three-dimensional partial sectional view of the coaxial connector of the invention.  
         [0015]      FIG. 4  is the disassembly drawing of the coaxial connector shown in  FIG. 3  showing the parts and the interrelation between parts.  
         [0016]      FIG. 5  is the sectional structure drawing along the longitudinal axis of the coaxial connector of the invention.  
         [0017]      FIG. 6  is the sectional view along the longitudinal axis of the coaxial connector of the invention connected to a complementary connector showing that the coaxial connector of the invention possesses the function of switching the direction of signal transmission through the coaxial connector of the invention.  
         [0018]      FIG. 7  is the schematic drawing of the electric conducting block and the contact piece which are integrally formed into a whole piece. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0019]     Referring to  FIGS. 3 and 4 , the coaxial connector  20  of the invention having the function of switching the direction of signal transmission comprises a housing  30 , a sliding support  40 , an electric conducting block  50 , a first conducting rod assembly  60 , a first sealing support  71 , a second conducting rod assembly  90 , a second sealing support  72 , a contact piece  80  and a third sealing support  73 . However, the more preferred embodiment of the invention is to further include a bearing piece  74  in the structure of the present invention.  
         [0020]     And, another preferred embodiment of the invention as shown in  FIG. 7  is to have the electric conducting block  50  and the contact piece  80  integrally combined into a whole piece.  
         [0021]     The housing  30  of the coaxial connector  20  is made of metal which can form the grounding, and is made to have a hollow inner side with a circular rib  31  formed on the inner wall of the inner space perpendicular to the axis of the coaxial connector to divide inner space into two compartments of the first cylindrical chamber  32  and the second cylindrical chamber  33  which are connected and adjacent to each other.  
         [0022]     In addition, an outlet opening  36  is formed on the wall of the first cylindrical chamber  32  of the housing  30  near the circular rib  31 , and can communicate with the first cylindrical chamber  32 .  
         [0023]     As shown in  FIG. 3 , all the parts of sliding support  40 , electric conducting block  50  and first conducting rod assembly  60  are installed in the first cylindrical chamber  32  of the housing  30  in sequence. Also, at the main outlet of the first cylindrical chamber  32  a sealing portion  34  is formed with inside diameter greater than the inside diameter of the first cylindrical chamber  32  for tightly installing and holding the first sealing support  71  which has a center hole  711  and for sealing the main outlet of the first cylindrical space  32 .  
         [0024]     Similarly, the parts of bearing piece  74 , second conducting rod assembly  90  are installed in the second cylindrical chamber  33  of the housing  30  in sequence. Also, at the main outlet of the second cylindrical space a sealing portion  35  is formed with inside diameter greater than the inside diameter of the second cylindrical chamber  33  for tightly installing and holding the second sealing support  72  which has a center hole  721 , and for sealing the main outlet of the second cylindrical chamber  33 .  
         [0025]     At the outlet opening  36  the third sealing support  73  having a center hole  731  is tightly installed and held for sealing the outlet opening  36 , and by employing the center hole  731  the contact piece  80  is installed and held with its front portion extended to the outside of the coaxial connector  20  to form the signal input end of the coaxial connector  20  and its back portion extended into the first cylindrical chamber  32  of the housing  30  of the coaxial connector  20 .  
         [0026]     The sliding support  40  is an electric insulating part, and is securely installed and fixed inside the first cylindrical chamber  32  against the circular rib  31  inside the housing  30 , and on one side of the sliding support  40  a raised hub  41  is formed for installing and fixing the electric conducting block  50 , in addition, the sliding support  40  has a sliding center hole  42  for accommodating the center rod  611  of the first conducting rod assembly  60  and the push rod  94  of the second conducting rod assembly  90 , and for allowing the center rod  611  and the push rod  94  to move freely in axial direction in the sliding center hole  42 .  
         [0027]     Referring to FIGS.  3  to  5 , the electric conducting block  50  is made of metal, and has a mounting hole  51  for fitting the raised hub  41  of the sliding support  40 , so that the electric conducting block  50  can be installed on the raised hub  41 . Since the top side of the electric conducting block  50  is a flat surface so that the flat bottom side of the contact piece  80  inside the first cylindrical chamber  32  of the housing  30  can evenly touch the flat top side of the electric conducting block to form flat-surface to flat-surface contact which enables a good electrical connection. Particularly, since both of the left and right side of the electric conducting block  50  perpendicular to the center axis of the sliding center hole  42  are also flat surface, a flat-surface to flat-surface contact between the side surface of the electric conducting block  50  and the moveable cylinder  61  of the first conducting rod assembly  60  can be achieved to enable a good electrical connection. In addition, with this type of structure the damage of distortion or looseness of the contact piece  80  due to the bumping or impact by the movable cylinder  61  of the first conducting rod assembly  60  can be avoided, and more effective signal transmission function of the coaxial connector  20  without signal distortion can be achieved.  
         [0028]     Shown in  FIG. 7  is one of the example of the preferred embodiment of the invention which has the contact piece  80  formed directly on the top side of the electric conducting block  50  to combine these two parts integrally as a whole piece structure. When the electric conducting block  50  is installed on the raised huh  41 , distortion or looseness of the contact piece  80  shall never occur when pushed and bumped by the first conducting rod assembly  60 , and therefore can achieve a superior electrical connection.  
         [0029]     The first conducting rod assembly  60  comprises a movable cylinder  61 , a fixed cylinder  62  and a spring  63  which form a movably connected elastic restoring mechanism by mounting the spring  63  between the movable cylinder  61  and the fixed cylinder  62 .  
         [0030]     As shown in  FIGS. 4 and 5 , a center rod  611  is formed axially on the outer side of the movable cylinder  61 , and extends freely into the sliding center hole  42 , so that one end of the first conducting rod assembly  60  can be supported by the sliding support  40  by having the center rod  611  fitted into the sliding support  40 .  
         [0031]     Similarly, the conducting rod  621  is formed on the outer end of the fixed cylinder  62 , and is fitted into the center hole  711  on the first sealing block  71  when the first conducting rod assembly  60  is installed in the first cylindrical chamber  32  of the housing  30 , and the first sealing block  71  is tightly fitted and mounted into the sealing portion  34  of the first cylindrical chamber  32  of the housing  30 , so that the first conducting rod assembly  60  can be supported by the first sealing support  71  by means of fitting the conducting rod  621  into the center hole  711  on the first sealing support  71 . And, the end portion of the conducting rod  621  of the first conducting rod assembly  60  extended to the outside of coaxial connector  20  forms the signal output end of the coaxial connector  20 .  
         [0032]     As shown in  FIG. 5 , when the complete set of the first conducting rod assembly  60  is installed in the first cylindrical chamber  32  of the housing  30 , the movable cylinder  61  and the fixed cylinder  62  of the first conducting rod assembly  60  are pushed by the spring  63  to move in outward direction, and stopped by the electric conducting block  50  and the first sealing support  71  on both ends. Since the sliding support  40 , the first sealing support  71  and the third sealing support  73  all are electric insulation parts, the electric conducting passage formed by the cylindrical wall of the fixed cylinder  62 , the spring  63 , the cylindrical wall of the movable cylinder  61  and the electric conducting block  50  can enable a good electrical connection between the conducting rod  621  of the first conducting rod assembly  60  and the contact piece  80 , and will not any cause electric connection with the housing  30 .  
         [0033]     As shown in  FIGS. 4 and 5  again, the second conducting rod assembly  90  comprises as conducting rod  91  and a spring  95 . The conducting rod  91  is formed into step-wised shape which comprises an electric conducting pin  92 , a neck portion  93  and push rod  94 . The spring  95  is mounted on the push rod  94  of the conducting rod  91  with one end stopped by the neck portion  93 .  
         [0034]     When the second conducting rod assembly  90  is installed in the second cylindrical chamber  33  of the house  30 , the push rod  94  of the second conducting rod assembly  90  can freely extend into the sliding center hole  42  of the sliding support  40 , so that one end of the second conducting rod  90  can be supported by sliding support  40 . However, one of the example of the preferred embodiment of the invention is having a bearing piece  74  with a center hole  741  tightly installed inside the second cylindrical chamber  33  and tightly fitted against the circular rib  31  to allow the push rod  94  of the second conducting rod assembly  90  to pass through and move freely in the center hole  741  of the bearing support  74 , and extended into the sliding center hole  42  of the sliding support  40 , i.e. the purpose of design of the bearing support  74  is to provide a support for one end of the second conducting rod assembly  90 , and enable a more smooth movement of the push rod  94  of the second conducting rod assembly  90  inside the sliding center hole  42  of the sliding support  40 .  
         [0035]     In addition to having the push rod  94  of the second conducting rod  90  extended into the sliding center hole  42  of the sliding support  40  the electric conducting pin  92  of the second conducting rod assembly  90  is arranged to pass through the center hole  721  and enter into the inner side  722  of the second sealing support  72  which is tightly installed and fitted into the sealing portion  35  of the second cylindrical chamber  33  of the housing  30  so that through supporting the electric conducting pin  92  the other end of the second conducting rod assembly  90  can be supported by the second sealing support  72 .  
         [0036]     As shown in  FIG. 5 , when the complete set of the second conducting rod  90  is installed in the second cylindrical chamber  33  of the housing  30 , one end of the spring  95  of the second conducting rod assembly  60  will touch and stopped by the neck portion  93  while another end will touch and stopped by the sealing support  74 , or, in case there is no sealing support  74  installed inside the second cylindrical chamber  33 , the other end of the spring  95  will touch and stopped by the sliding support  40 , so that the spring  95  will exert an expansion force on the neck portion  93  of the second conducting rod assembly  90  that pushes the neck portion to press the second sealing support  72  constantly without separation, and the electric conducting pin  92  of the second conducting rod assembly  90  forms the signal input end of the coaxial connector  20 .  
         [0037]     Particularly, when the neck portion  93  of the second conducting rod assembly  90  securely touches and is stopped by the second sealing support  72 , the push rod  94  of the second conducting rod assembly  90  is inside the sliding center hole  42  of the sliding support  40 , and will cause no electrical connection with the center rod  611  of the first conducting rod assembly  60 , this is because while in this condition there is a space between the push rod  94  and the center rod  611 .  
         [0038]     However, as shown in  FIG. 6 , when the electric conducting pin  92  of the second conducting rod assembly  90  is pushed axially by a force from outer side, and moves backwardly, the distance of moving of the push rod  94  of the second conducting rod assembly  90  in the sliding center hole  42  of the sliding support  40  will not only enable the push rod  94  to touch the center rod  611  of the first conducting rod assembly  60  but also push the movable cylinder  61  and the spring  63  of the first conducting rod assembly  60  to move jointly in backward direction, this will cause the movable cylinder  61  of the first conducting rod assembly  60  to move a short distance away from the electric conducting block  50  that results in a gap formed between the movable cylinder  61  and the electric conducting block  50 , therefore the conducting rod  621  of the first conducting rod assembly  60  and the contact piece  80  will no longer form electrical connection, but the cylinder wall of the fixed cylinder  62 , the spring  63 , the center rod  611  of the movable cylinder  61  and the push rod  94  of the first conducting rod assembly  60  form an electric circuit that forms good electrical connection between the conducting rod  621  of the first conducting rod assembly  60  and the electric conducting pin  92  of the second conducting rod assembly  90  without causing electric connection with the housing  30 .  
         [0039]     Therefore, as shown in  FIGS. 5 and 6 , when the coaxial connector  20  of the invention is not connected to a complementary connector  19 , the conducting rod  621  of the first conducting rod assembly  60  and the contact piece  80  form electrical connection, and signal can be transmitted from the contact piece  80  to the conducting rod  621  of the coaxial connector  20 .  
         [0040]     However, when the coaxial connector  20  of the invention is connected to a complementary connector  19 , the conducting rod  621  and the contact piece  80  will no longer form electrical connection, but the conducting rod  621  of the first conducting rod assembly  60  and the electric conducting pin  92  of the second conducting rod assembly  90  will form electrical connection, signal can be transmitted from the complementary connector  19  to the conducting rod  621  through the electric conducting pin  92  of the coaxial connector  20 . Therefore, the coaxial connector  20  of the invention has the function of switching the direction of transmission of signal without distortion of signal.