Patent Publication Number: US-2023143547-A1

Title: Connector

Description:
TECHNICAL FIELD 
     The present disclosure relates to a connector. 
     BACKGROUND 
     Patent Document 1 describes a connector provided with a housing, a terminal and a protecting member. The housing holds the terminal and the protecting member. The protecting member includes a through hole for insertion of the terminal. The protecting member is configured to be displaced between a first position and a second position in the housing. 
     When the protecting member is located at the first position, the terminal is not passed through the through hole. Thus, when the protecting member is located at the first position, the terminal is protected by the protecting member without being exposed from the protecting member. 
     If the protecting member is displaced from the first position to the second position, the terminal protrudes out from the through hole. That is, when the protecting member is located at the second position, the terminal is passed through the through hole. Thus, when the protecting member is located at the second position, the terminal is exposed from the protecting member. In this way, the terminal becomes electrically connectable to a mating connector. 
     PRIOR ART DOCUMENT 
     Patent Document 
     
         
         Patent Document 1: JP H10-041019 A 
       
    
     SUMMARY OF THE INVENTION 
     Problems to be Solved 
     In the connector described in Patent Document 1, the protecting member may rub against the terminal when the protecting member is displaced between the first position and the second position. In this way, the terminal may be worn. 
     The present disclosure aims to provide a connector capable of suppressing the wear of a terminal. 
     Means to Solve the Problem 
     The present disclosure is directed to a connector with a housing having a facing surface facing a mating connector when the connector is assembled with the mating connector, a terminal held in the housing, the terminal projecting in a first direction from the facing surface, and a protecting member held in the housing, the protecting member moving in the first direction and a second direction opposite to the first direction in the housing, wherein the housing includes a protecting portion for protecting the terminal, the protecting portion projects in the first direction from the facing surface, a projection amount of the protecting portion is larger than that of the terminal, the protecting member includes a first through hole for insertion of the terminal and a second through hole for insertion of the protecting portion, and the protecting member is displaced between a first position between a tip of the protecting portion and a tip of the terminal in the first direction and a second position between the tip of the terminal and the facing surface in the first direction. 
     Effect of the Invention 
     According to the connector of the present disclosure, an effect of being capable of suppressing the wear of the terminal is achieved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view showing one embodiment of an electrical connection device provided with a connector. 
         FIG.  2    is a plan view of a first connector viewed from a first direction. 
         FIG.  3    is a plan view of a second connector viewed from a second direction. 
         FIG.  4    is a plan view of  FIG.  3    with a protecting mechanism omitted. 
         FIG.  5    is a section along 5-5 in  FIG.  3   . 
         FIG.  6    is a section along 6-6 in  FIG.  3   . 
         FIG.  7    is a perspective view of the protecting mechanism. 
         FIG.  8    is a perspective view of the protecting mechanism viewed from an angle different from that in  FIG.  7   . 
         FIG.  9    is a section in which a protecting member is displaced to a second position from a position of  FIG.  5   . 
         FIG.  10    is a section in which the protecting member is displaced to the second position from a position of  FIG.  6   . 
         FIG.  11    is a perspective view in which the protecting member is displaced to the second position from a position of  FIG.  8   . 
     
    
    
     DETAILED DESCRIPTION TO EXECUTE THE INVENTION 
     Description of Embodiments of Present Disclosure 
     First, embodiments of the present disclosure are listed and described. 
     [1] The connector of the present disclosure is provided with a housing having a facing surface facing a mating connector when the connector is assembled with the mating connector, a terminal held in the housing, the terminal projecting in a first direction from the facing surface, and a protecting member held in the housing, the protecting member moving in the first direction and a second direction opposite to the first direction in the housing, wherein the housing includes a protecting portion for protecting the terminal, the protecting portion projects in the first direction from the facing surface, a projection amount of the protecting portion is larger than that of the terminal, the protecting member includes a first through hole for insertion of the terminal and a second through hole for insertion of the protecting portion, and the protecting member is displaced between a first position between a tip of the protecting portion and a tip of the terminal in the first direction and a second position between the tip of the terminal and the facing surface in the first direction. 
     According to the above configuration, when the protecting member is located at the first position, the terminal is not passed through the first through hole. In this case, the terminal is protected by the protecting member without being exposed from the protecting member. When the protecting member is located at the second position, the terminal is passed through the first through hole. In this case, the terminal is exposed from the protecting member. 
     Both when the protecting member is located at the first position and when the protecting member is located at the second position, the protecting portion is passed through the second through hole. Thus, the protecting member moves while being guided by the protecting portion when the protecting member is displaced between the first position and the second position. That is, the protecting portion guides the protecting member. In this way, it is suppressed that the protecting member rubs against the terminal. As a result, the wear of the terminal is suppressed. 
     Here, “facing each other” in this specification indicates that surfaces or members are at positions right in front of each other and means not only a case where the surfaces or members are at positions perfectly in front of each other, but also a case where the surfaces or members are at positions partially in front of each other. Further, “facing each other” in this specification means both a case where another member different from two members is interposed between the two members and a case where nothing is present between the two members. 
     [2] In the above connector, the protecting portion is preferably provided to surround the terminal when the housing is viewed from the second direction. 
     According to the above configuration, the protecting member is less likely to be inclined when moving in the first and second directions as compared to the case where the protecting portion has, for example, a mere flat shape. In this way, the wear of the terminal can be suppressed. For example, if the protecting member moves in the first and second directions in an inclined state, the protecting member easily rubs against the terminal. 
     [3] Preferably, the above connector is provided with a shield member made of metal, and the shield member is provided along the protecting portion. 
     According to the above configuration, the shield member is provided to surround the terminal. Thus, a possibility of noise entrance from the terminal is reduced. 
     [4] In the above connector, the first and second through holes are preferably respectively independent holes. 
     According to the above configuration, an area of the holes open in the protecting member is reduced as compared to the case where the first and second through holes are constituted by one common hole. Since the terminal becomes less likely to be exposed from the protecting member in this way, a possibility that worker&#39;s fingers touch the terminal is reduced. 
     [5] Preferably, the above connector is provided with a pressing member provided between the facing surface and the protecting member, the pressing member presses the protecting member in the first direction, and the protecting member is pressed in the second direction by the mating connector when the connector and the mating connector are assembled. 
     According to the above configuration, the protecting member is displaced to the second position as the connector and the mating connector are assembled. As the connector and the mating connector are disassembled, the protecting member is displaced to the first position. Thus, a possibility that the protecting member is inadvertently displaced to the second position is reduced. That is, since the terminal becomes less likely to be exposed from the protecting member, a possibility that the worker&#39;s fingers touch the terminal is reduced. 
     [6] In the above connector, preferably, the housing includes a holding portion projecting in the first direction from the facing surface, a projection amount of the holding portion is larger than that of the terminal and smaller than that of the protecting portion, the holding portion includes a first hook part on a tip thereof, the protecting member includes a third through hole for insertion of the holding portion, and the first hook part contacts the protecting member when the protecting member is located at the first position. 
     According to the above configuration, a movement in the first direction of the protecting member located at the first position is suppressed by the contact of the first hook part with the protecting member. In this way, a possibility of detachment of the protecting member from the housing is reduced. 
     [7] Preferably, the above connector is provided with a holding member to be connected to the protecting member, the holding member includes a second hook part on an end part thereof, the housing includes an insertion hole for insertion of the holding member, and the second hook part contacts the housing when the protecting member is located at the first position. 
     According to the above configuration, a movement in the first direction of the protecting member located at the first position is suppressed by the contact of the second hook part with the housing. In this way, a possibility of detachment of the protecting member from the housing is reduced. 
     [8] Preferably, the above connector is provided with a connecting member to be connected to the protecting member and the holding member in a state movable in the first and second directions with respect to the protecting member and the holding member, and the holding member is connected to the protecting member via the connecting member. 
     According to the above configuration, a displacement amount of the holding member becomes smaller than that of the protecting member when the protecting member is displaced from the first position to the second position. By reducing the displacement amount of the holding member when the protecting member is displaced from the first position to the second position, a protrusion amount of the holding member protruding out from the housing in the second direction from the insertion hole decreases when the protecting member is located at the second position. In this way, a possibility of interference of the holding member with another member is reduced. 
     Details of Embodiment of Present Disclosure 
     Embodiment 
     One embodiment of an electrical connection device provided with a connector of the present disclosure is described below with reference to the drawings. The electrical connection device of this embodiment is used in a connection part in a wiring harness for a high-voltage power supply of a vehicle. Note that the present invention is not limited to these illustrations and is intended to be represented by claims and include all changes in the scope of claims and in the meaning and scope of equivalents. 
     As shown in  FIG.  1   , an electrical connection device  10  includes a first connector  20  and a second connector  30 . The first and second connectors  20 ,  30  are assembled with each other. The first and second connectors  20 ,  30  are electrically connected by being assembled with each other. 
     In this embodiment, a direction in which the second connector  30  relatively approaches the first connector  20  in the case of assembling the first and second connectors  20 ,  30  is referred to as a first direction D 1 . Further, a direction in which the first connector  20  relatively approaches the second connector  30  in the case of assembling the first and second connectors  20 ,  30  is referred to as a second direction D 2 . That is, the first and second directions D 1 , D 2  are mutually opposite directions. 
     (First Connector  20 ) 
     First, the first connector  20  is described. 
     As shown in  FIG.  2   , the first connector  20  includes a first housing  21  and first terminals  22 . The first connector  20  is a mating connector of the second connector  30 . 
     The first housing  21  is a housing provided in the first connector  20 . The first housing  21  holds the first terminals  22 . 
     The first housing  21  includes a first accommodating portion  23  and a second accommodating portion  24 . The first and second accommodating portions  23 ,  24  accommodate the first terminals  22 . Thus, the inside of the first accommodating portion  23  and that of the second accommodating portion  24  communicate. 
     The first accommodating portion  23  includes an outer peripheral wall  25 , an inner peripheral wall  26  and a sealing member  27 . 
     The outer peripheral wall  25  is provided to have a rectangular shape when the first housing  21  is viewed from the first direction D 1 . Thus, the first accommodating portion  23  includes an accommodation opening  28  formed by the outer peripheral wall  25 . The accommodation opening  28  is an opening formed in the first housing  21 . The accommodation opening  28  is facing in the second direction D 2  in the first housing  21 . The first accommodating portion  23  of this embodiment accommodates a part of the second connector  30  through the accommodation opening  28  when the first and second connectors  20 ,  30  are assembled. 
     The inner peripheral wall  26  is provided in a region surrounded by the outer peripheral wall  25 . Thus, the inner peripheral wall  26  is provided to have a rectangular shape one size smaller than the shape of the outer peripheral wall  25  when the first housing  21  is viewed from the first direction D 1 . 
     The sealing member  27  is provided on the tip of the inner peripheral wall  26 . Thus, the sealing member  27  is provided to have a rectangular shape when the first housing  21  is viewed from the first direction D 1 . The sealing member  27  is, for example, made of a resilient material such as rubber or elastomer. The sealing member  27  contacts the second connector  30  when the first and second connectors  20 ,  30  are assembled. The sealing member  27  seals between the first and second connectors  20 ,  30  by contacting the second connector  30 . In this way, sealability between the first and second connectors  20 ,  30  is ensured. 
     The second accommodating portion  24  accommodates parts of wires  29  connected to the first terminals  22 . The second accommodating portion  24  is provided to extend from the outer peripheral wall  25 . Specifically, the second accommodating portion  24  extends in a direction different from the first and second directions D 1 , D 2  from one surface of the outer peripheral wall  25 . Thus, a connecting direction of the first connector  20  to the second connector  30  and an extending direction of the wires  29  from the first connector  20  are different in the first connector  20 . That is, the first connector  20  is an L-shaped connector bent between an input side and an output side. 
     The first terminal  22  is a terminal provided in the first connector  20 . Two first terminals  22  are provided. The two first terminals  22  are respectively connected to two wires  29  in the first housing  21 . By assembling the first and second connectors  20 ,  30 , the first terminals  22  are electrically connected to the second connector  30 . 
     (Second Connector  30 ) 
     Next, the second connector  30  is described. 
     As shown in  FIG.  3   , the second connector  30  includes a second housing  31 , second terminals  32 , shield members  33  and a protecting mechanism  34 . The second connector  30  is a mating connector of the first connector  20 . 
     (Second Housing  31 ) 
     The second housing  31  is a housing provided in the second connector  30 . The second housing  31  holds the second terminals  32 , the shield members  33  and the protecting mechanism  34 . The second housing  31  includes a fixing portion  35 , a peripheral wall  36 , protecting portions  37  and a holding portion  38 . 
     As shown in  FIGS.  3  and  4   , the fixing portion  35  is, for example, plate-like. The fixing portion  35  of this embodiment is provided to have a rectangular shape when the second housing  31  is viewed from the second direction D 2 . The fixing portion  35  has a facing surface  41 , fixing holes  42 , first insertion holes  43  and a second insertion hole  44 . 
     The facing surface  41  is a surface facing the first connector  20  when the second connector  30  is assembled with the first connector  20 . Thus, the facing surface  41  is a surface facing the first connector  20  in the fixing portion  35 . The facing surface  41  is facing the first connector  20  in the fixing portion  35 . That is, the facing surface  41  is facing in the first direction D 1  in the fixing portion  35 . In this embodiment, the facing surface  41  includes a region facing the first connector  20  over the protecting mechanism  34 . 
     One or more fixing holes  42  are provided. In this embodiment, four fixing holes  42  are provided. The four fixing holes  42  are located on four corners of the fixing portion  35  when the second housing  31  is viewed from the second direction D 2 . The fixing holes  42  are, for example, holes into which bolts, screws or the like are inserted. By inserting bolts, screws or the like into the fixing holes  42 , the fixing portion  35  is fixed to another member. As a result, the second housing  31  is mounted on another member. 
     The first insertion hole  43  is an insertion hole for insertion of the second terminal  32 . Two first insertion holes  43  are, for example, provided. The first insertion holes  43  penetrate through the fixing portion  35 . The first insertion holes  43  of this embodiment are in the form of slits open in the facing surface  41 . 
     The second insertion hole  44  is an insertion hole into which a part of the protecting mechanism  34  is inserted. The second insertion hole  44  penetrates through the fixing portion  35 . The second insertion hole  44  of this embodiment is in the form of a slit open in the facing surface  41 . 
     The peripheral wall  36  is provided to extend in the first direction D 1  from the fixing portion  35 . Specifically, the peripheral wall  36  projects in the first direction D 1  from the facing surface  41 . The peripheral wall  36  is provided to surround the first insertion holes  43  and the second insertion hole  44  in the facing surface  41  when the second housing  31  is viewed from the second direction D 2 . In particular, the peripheral wall  36  is provided to surround the second terminals  32  and the protecting mechanism  34  when the second housing  31  is viewed from the second direction D 2 . The peripheral wall  36  is inserted between the outer peripheral wall  25  and the sealing member  27  when the first and second connectors  20 ,  30  are assembled. At this time, the peripheral wall  36  is held in close contact with the sealing member  27 . 
     The peripheral wall  36  of this embodiment is provided to have a rectangular shape when the second housing  31  is viewed from the second direction D 2 . Thus, the second housing  31  includes a connection opening  45  formed by the peripheral wall  36 . The connection opening  45  is an opening formed in the second housing  31 . The connection opening  45  is facing in the first direction D 1  in the second housing  31 . That is, in the second housing  31 , a direction facing the connection opening  45  from the facing surface  41  is the first direction D 1  and a direction facing the facing surface  41  from the connection opening  45  is the second direction D 2 . The second connector  30  is connected to the first connector  20  through the connection opening  45 . 
     The peripheral wall  36  includes a first wall  46 , a second wall  47 , a third wall  48  and a fourth wall  49 . The first, second, third and fourth walls  46 ,  47 ,  48  and  49  are provided to surround the second terminals  32  and the protecting mechanism  34  on four sides when the second housing  31  is viewed from the second direction D 2 . 
     The first and second walls  46 ,  47  are facing each other. The third and fourth walls  48 ,  49  are facing each other. The first wall  46  is connected to the third and fourth walls  48 ,  49 . The second wall  47  is connected to the third and fourth walls  48 ,  49 . The third wall  48  is connected to the first and second walls  46 ,  47 . The fourth wall  49  is connected to the first and second walls  46 ,  47 . 
     The first wall  46  is provided with an exposure opening  51 . The exposure opening  51  is an opening for exposing the inside of the second housing  31 . The exposure opening  51  of this embodiment is provided to have a rectangular shape when the first wall  46  is viewed from front. 
     The exposure opening  51  communicates with the connection opening  45 . The exposure opening  51  is provided to avoid the interference of the first and second housings  21 ,  31  in the case of assembling the first and second connectors  20 ,  30 . That is, the first housing  21  is fit into the exposure opening  51  in the case of assembling the first and second connectors  20 ,  30 . The exposure opening  51  is necessary since the first connector  20  is an L-shaped connector. 
     The exposure opening  51  is provided at a position of the first wall  46  separated in the first direction D 1  from the facing surface  41 . That is, the exposure opening  51  is provided not from the tip to the base end of the first wall  46 , but from the tip of the first wall  46  to a position between the tip and the base end. 
     As shown in  FIGS.  3 ,  4 ,  5  and  6   , the protecting portion  37  is, for example, plate-like. The protecting portion  37  is provided to extend in the first direction D 1  from the fixing portion  35 . Specifically, the protecting portion  37  projects in the first direction D 1  from the facing surface  41 . A projection amount of the protecting portion  37  is smaller than that of the peripheral wall  36 . Thus, a distance between the tip of the protecting portion  37  and the facing surface  41  is shorter than a distance between the tip of the peripheral wall  36  and the facing surface  41 . 
     The protecting portion  37  is provided in a region surrounded by the peripheral wall  36  in the facing surface  41 . The protecting portion  37  is provided to surround the second terminal  32  when the second housing  31  is viewed from the second direction D 2 . The protecting portion  37  protects the second terminal  32  by surrounding the second terminal  32 . In this embodiment, the protecting portion  37  is provided to partially surround the second terminal  32  when the second housing  31  is viewed from the second direction D 2 . For example, the protecting portion  37  is provided to surround the second terminal  32  on three sides when the second housing  31  is viewed from the second direction D 2 . Thus, the protecting portion  37  of this embodiment is provided to extend around the second terminal  32  while being bent when the second housing  31  is viewed from the second direction D 2 . The protecting portion  37  protects the second terminal  32  by surrounding the second terminal  32 . Particularly, the protecting portion  37  reduces a possibility that worker&#39;s fingers touch the second terminal  32  by protecting the second terminal  32 . 
     In this embodiment, two protecting portions  37  are provided. The two protecting portions  37  are provided to respectively surround the two first insertion holes  43 . The two protecting portions  37  are provided side by side between the third and fourth walls  48 ,  49 . In this embodiment, one of the two protecting portions  37  is provided to have a C shape and the other is provided to have an inverted C shape when the second housing  31  is viewed from the second direction D 2 . The two protecting portions  37  are so provided that openings thereof face each other when the second housing  31  is viewed from the second direction D 2 . That is, in this embodiment, the two protecting portions  37  are provided symmetrically with respect to a center of the facing surface  41  when the second housing  31  is viewed from the second direction D 2 . 
     The holding portion  38  is, for example, a projection. The holding portion  38  is provided to extend in the first direction D 1  from the fixing portion  35 . Specifically, the holding portion  38  projects in the first direction D 1  from the facing surface  41 . A projection amount of the holding portion  38  is smaller than those of the protecting portions  37 . Thus, a distance between the tip of the holding portion  38  and the facing surface  41  is shorter than a distance between the tips of the protecting portions  37  and the facing surface  41 . The holding portion  38  is provided between the two holding portions  37  on the facing surface  41 . The holding portion  38  of this embodiment is provided at a center position of the facing surface  41  when the second housing  31  is viewed from the second direction D 2 . 
     The holding portion  38  includes a first hook part  52 . The first hook part  52  is provided on the tip of the holding portion  38 . The first hook part  52  is in the form of a hook. The holding portion  38  holds the protecting mechanism  34  by the first hook part  52 . 
     (Second Terminals  32 ) 
     The second terminal  32  is, for example, a busbar. The second terminal  32  is held in the second housing  31 . Two second terminals  32  are provided. The two second terminals  32  are respectively inserted into the two first insertion holes  43 . Thus, the two second terminals  32  are respectively passed through the fixing portion  35 . Each of the two second terminals  32  includes a first part  53  and a second part  54 . 
     The first part  53  is a part to be connected to the first connector  20  in the second terminal  32 . That is, the first part  53  contacts the first terminal  22  in the case of assembling the first and second connectors  20 ,  30 . 
     The first part  53  is accommodated into the second housing  31 . The first part  53  extends in the first direction D 1  from the facing surface  41  by inserting the second terminal  32  into the first insertion hole  43 . Thus, the second terminal  32  projects in the first direction D 1  from the facing surface  41 . 
     A projection amount of the first part  53  is smaller than that of the protecting portion  37 . That is, a projection amount of the second terminal  32  is smaller than that of the protecting portion  37 . Thus, a distance between the tip of the second terminal  32  and the facing surface  41  is shorter than the distance between the tip of the protecting portion  37  and the facing surface  41 . In this embodiment, the projection amount of the second terminal  32  is smaller than that of the holding portion  38 . In short, the distance between the tip of the second terminal  32  and the facing surface  41  is shorter than the distance between the tip of the holding portion  38  and the facing surface  41 . 
     The two first parts  53  are provided side by side between the third and fourth walls  48 ,  49 . In this embodiment, the two first parts  53  are provided in parallel to the third and fourth walls  48 ,  49 . The two first parts  53  are respectively provided to be surrounded by the two protecting portions  37 . 
     Here, “parallel” in this specification means not only strictly parallel, but also substantially parallel within a range in which functions and effects in this embodiment are achieved. 
     The second part  54  is, for example, a part to be connected to an unillustrated wire in the second terminal  32 . Two second parts  54  are respectively connected to unillustrated two wires. The second part  54  protrudes out from the second housing  31 . The second part  54  is provided on a side opposite to the peripheral wall  36  with respect to the fixing portion  35 . The second part  54  is provided to extend in the second direction D 2  from the fixing portion  35 . 
     (Shield Members  33 ) 
     The shield member  33  is made of metal. The shield member  33  is, for example, a plate-like member. The shield member  33  is held in the second housing  31 . The shield member  33  is provided along the protecting portion  37 . Thus, the shield member  33  of this embodiment is provided along the protecting portion  37  while being bent when the second housing  31  is viewed from the second direction D 2 . The shield member  33  of this embodiment is provided between the protecting portion  37  and the peripheral wall  36  and mounted on the protecting portion  37 . 
     The shield member  33  is provided to surround the second terminal  32 , similarly to the protecting portion  37 . A possibility that the second terminal  32  is affected by noise is reduced by the shield member  33  surrounding the second terminal  32 . Further, the strength of the protecting portion  37  is improved by the shield member  33 . 
     The shield member  33  of this embodiment is provided to partially surround the second terminal  32  when the second housing  31  is viewed from the second direction D 2 . The shield member  33  is provided to surround the second terminal  32  on three sides when the second housing  31  is viewed from the second direction D 2 . 
     In this embodiment, two shield members  33  are provided. The two shield members  33  are respectively provided along the two protecting portions  37 . Thus, in this embodiment, one of the two shield members  33  is provided to have a C shape and the other is provided to have an inverted C shape when the second housing  31  is viewed from the second direction D 2 . 
     (Protecting Mechanism  34 ) 
     As shown in  FIGS.  3 ,  5  and  6   , the protecting mechanism  34  is a mechanism for protecting the second terminals  32 . The protecting mechanism  34  includes a protecting member  56 , a connecting member  57 , a holding member  58  and pressing members  59 . The protecting mechanism  34  is held in the second housing  31 . 
     The protecting member  56  is a member for protecting the second terminals  32 . The protecting member  56  is, for example, a plate-like member. The protecting member  56  is accommodated into the second housing  31 . The protecting member  56  moves in the first and second directions D 1 , D 2  in the second housing  31 . 
     The protecting member  56  is provided in a region surrounded by the peripheral wall  36  in the second housing  31 . The protecting member  56  includes first through hole  61 , second through holes  62  and a third through hole  63 . In particular, the protecting member  56  of this embodiment further includes a protecting part  64 , a pressing part  65  and a coupling part  66 . 
     The first, second and third through holes  61 ,  62  and  63  penetrate through the protecting member  56 . In this embodiment, the first, second and third through holes  61 ,  62  and  63  are respectively independent holes. The first through holes  61  are holes for insertion of the second terminal  32 . The second through holes  62  are holes for insertion of the protecting portions  37 . In this embodiment, the second through holes  62  are also holes for insertion of the shield members  33 . The third through hole  63  is a hole for insertion of the holding portion  38 . 
     The protecting part  64  is a part surrounded by the two protecting portions  37  in the protecting member  56 . Thus, the protecting part  64  is provided with the first through holes  61  and the third through hole  63 . 
     The pressing part  65  is a part located between the peripheral wall  36  and the protecting portions  37  in the protecting member  56 . Thus, the second through holes  62  are provided on a boundary between the protecting part  64  and the pressing part  65  in the protecting member  56 . The pressing part  65  is a part to be pressed in the second direction D 2  by the first connector  20  in the case of assembling the first and second connectors  20 ,  30 . Specifically, the pressing part  65  is a part pressed in the second direction D 2  by the sealing member  27  in the case of assembling the first and second connectors  20 ,  30 . 
     As shown in  FIGS.  7  and  8   , the pressing part  65  includes a mounting part  67  extending in the second direction D 2 . The mounting part  67  is mounted on the connecting member  57 . The mounting part  67  of this embodiment includes one or more first pins  68 . In this embodiment, the mounting part  67  includes two first pins  68 . The protecting member  56  is mounted on the connecting member  57  via the two first pins  68 . 
     The coupling part  66  is a part coupling the protecting part  64  and the pressing part  65 . The coupling part  66  is provided between the two protecting portions  37  in the protecting member  56 . 
     The connecting member  57  connects the protecting member  56  and the holding member  58 . The connecting member  57  is mounted on the protecting member  56  and the holding member  58 . The connecting member  57  is, for example, a plate-like member. The connecting member  57  includes first holes  71  and a second pin  72 . 
     The first hole  71  is a hole for insertion of the first pin  68 . Thus, two first holes  71  are provided in this embodiment. The two first holes  71  are oblong holes long in the first direction D 1 . Thus, the connecting member  57  is displaceable in the first and second directions D 1 , D 2  with respect to the protecting member  56  with the first pins  68  inserted in the first holes  71 . 
     One or more second pins  72  are provided. In this embodiment, one second pin  72  is provided. The connecting member  57  is mounted on the holding member  58  via the second pin  77 . 
     The holding member  58  is a member for holding the protecting member  56 . The holding member  58  of this embodiment is connected to the protecting member  56  via the connecting member  57 . The holding member  58  is, for example, a plate-like member. The holding member  58  includes a second hole  73 , a second hook part  74  and a third hook part  75 . 
     The second hole  73  is a hole for insertion of the second pin  72 . The second hole  73  is an oblong hole long in the first direction D 1 . Thus, the holding member  58  is displaceable in the first and second directions D 1 , D 2  with respect to the connecting member  57  with the second pin  72  inserted in the second hole  73 . That is, the holding member  58  is movable in the first and second directions D 1 , D 2  with respect to the protecting member  56 . From this, the connecting member  57  can be said to be connected to the protecting member  56  and the holding member  58  while being movable in the first and second directions D 1 , D 2  with respect to the protecting member  56  and the holding member  58 . 
     As shown in  FIG.  6   , the holding member  58  is inserted into the second insertion hole  44 . That is, the second insertion hole  44  is an insertion hole for insertion of the holding member  58 . 
     The second and third hook parts  74 ,  75  are respectively provided on end parts of the holding member  58 . The second hook part  74  is provided on one end of the holding member  58 , and the third hook part  75  is provided on the other end of the holding member  58 . The second hook part  74  is located forward of the third hook part  75  in the second direction D 2 . That is, the second hook part  74  is located forward of the fixing portion  35  in the second direction D 2 . The third hook part  75  is located forward of the fixing portion  35  in the first direction D 1 . 
     As shown in  FIGS.  5  and  6   , the pressing member  59  is located between the protecting member  56  and the fixing portion  35 . Specifically, the pressing member  59  is provided between the protecting member  56  and the facing surface  41 . The pressing member  59  is mounted on the protecting member  56  and the facing surface  41 . The pressing member  59  is mounted on the pressing part  65  of the protecting member  56 . 
     One or more pressing members  59  are provided. In this embodiment, four pressing members  59  are provided. The four pressing members  59  are respectively provided at four corner positions of the protecting member  56  when the second housing  31  is viewed from the second direction D 2 . 
     The pressing member  59  is a member for pressing the protecting member  56  in the first direction D 1 . The pressing member  59  is, for example, resilient. The pressing member  59  presses the protecting member  56  in the second direction D 2  by a resilient force thereof. Although the pressing member  59  of this embodiment is a coil spring, the pressing member  59  may be another spring or rubber. 
     (Movements of Protecting Member  56 ) 
     Next, movements of the protecting member  56  are described. 
     The pressing members  59  press the protecting member  56  in the first direction D 1 , whereby the protecting member  56  moves in the first direction D 1 . The protecting member  56  is located at a first position P 1  by moving in the first direction D 1 . The protecting member  56  shown in  FIGS.  5  and  6    is located at the first position P 1 . 
     When the protecting member  56  is located at the first position P 1 , the first hook part  52  and the protecting part  64  are in contact. That is, the first hook part  52  contacts the protecting member  56  when the protecting member  56  is located at the first position P 1 . At this time, the first hook part  52  is caught by the protecting member  56 . In particular, the first hook part  52  is caught on an edge of the third through hole  63 . 
     When the protecting member  56  is located at the first position P 1 , the second hook part  74  and the fixing portion  35  are in contact. That is, the second hook part  74  contacts the second housing  31  when the protecting member  56  is located at the first position P 1 . At this time, the second hook part  74  is caught by the second housing  31 . In particular, the second hook part  74  is caught on an edge of the second insertion hole  44 . 
     When the protecting member  56  is located at the first position P 1 , the first and second hook parts  52 ,  74  are respectively in contact with the protecting member  56  and the second housing  31 , whereby the pressing members  59  receive a force for pressing the protecting member  56  in the first direction D 1 . As a result, the protecting member  56  is held in the second housing  31 . As just described, the holding portion  38  and the holding member  58  of this embodiment function as a stopper for suppressing the detachment of the protecting member  56  from the second housing  31 . 
     When the protecting member  56  is located at the first position P 1 , the second terminals  32  are not passed through the first through holes  61 . When the protecting member  56  is located at the first position P 1 , the protecting portions  37  are passed through the second through holes  62 . That is, when the protecting member  56  is located at the first position P 1 , the second terminals  32  are not passed through the first through holes  61 , whereas the protecting portions  37  are passed through the second through holes  62 . When the protecting member  56  is located at the first position P 1 , the shield members  33  are not passed through the second through holes  62  although being inserted in the second through holes  62 . When the protecting member  56  is located at the first position P 1 , the holding portion  38  is passed through the third through hole  63 . Thus, the protecting member  56  located at the first position P 1  is located at a position between the tips of the protecting portions  37  and the tips of the second terminals  32  in the first direction D 1 . In short, the first position P 1  is a position between the tips of the protecting portions  37  and the tips of the second terminals  32  in the first direction D 1 . 
     Since the second terminals  32  are not passed through the second through holes  62  when the protecting member  56  is located at the first position P 1 , the second terminals  32  are not exposed from the protecting member  56 . That is, when the protecting member  56  is located at the first position P 1 , the second terminals  32  are covered by the protecting member  56 . In this way, the second terminals  32  are protected by the protecting member  56 . In this embodiment, the second terminals  32  are protected by the protecting member  56  and the protecting portions  37 . In this way, it is suppressed that the worker&#39;s fingers touch the second terminals  32 . 
     As shown in  FIGS.  9  and  10   , when the first and second connectors  20 ,  30  are assembled, the first connector  20  presses the protecting member  56  in the second direction D 2 , whereby the protecting member  56  moves from the first position P 1  to a second position P 2 . At this time, the sealing member  27  presses the pressing part  65  in the second direction D 2 . The sealing member  27  contacts the pressing part  65  and also contacts the peripheral wall  36 . By the contact of the sealing member  27  and the peripheral wall  36 , the first and second connectors  20 ,  30  are sealed. The protecting member  56  moves to the second position P 2  by moving in the second direction D 2  from the first position P 1 . The protecting member  56  shown in  FIGS.  9  and  10    is located at the second position P 2 . 
     As shown in  FIGS.  9 ,  10  and  11   , if the protecting member  56  located at the first position P 1  is pressed in the second direction D 2  by the first connector  20 , the protecting member  56  moves in the second direction D 2  together with the connecting member  57  and the holding member  58 . At this time, the first hook part  52  and the protecting member  56  are separated. Further, the second hook part  74  and the fixing portion  35  are separated. 
     If the protecting member  56  is further pressed in the second direction D 2  by the first connector  20 , the third hook part  75  contacts the fixing portion  35 . At this time, the third hook part  75  is caught on an edge of the second insertion hole  44 . The holding member  58  stops by the contact of the third hook part  75  with the fixing portion  35 . Thus, the protecting member  56  and the connecting member  57  move in the second direction D 2  with respect to the holding member  58 . 
     If the protecting member  56  is further pressed in the second direction D 2  by the first connector  20 , the connecting member  57  contacts the fixing portion  35 . At this time, the connecting member  57  contacts the facing surface  41 . The connecting member  57  stops by contacting the fixing portion  35 . Thus, the protecting member  56  moves in the second direction D 2  with respect to the connecting member  57  and the holding member  58 . 
     If the protecting member  56  is further pressed in the second direction D 2  by the first connector  20 , the mounting part  67  contacts the fixing portion  35 . At this time, the mounting part  67  contacts the facing surface  41 . The protecting member  56  stops by the contact of the mounting part  67  with the fixing portion  35 . In this way, the protecting member  56  moves to the second position P 2 . Thus, a position where the mounting part  67  is in contact with the facing surface  41  can be said to be the second position P 2 . In this way, the facing surface  41  receives a force of the first connector  20  pressing the protecting member  56 . 
     Here, it is assumed that a displacement amount when the protecting member  56  is displaced from the first position P 1  to the second position P 2  is a first displacement amount L 1  and a displacement amount of the holding member  58  being displaced according to a displacement of the protecting member  56  is a second displacement amount L 2 . Since the holding member  58  is connected to the protecting member  56  in a state movable in the first and second directions D 1 , D 2  with respect to the protecting member  56 , the second displacement amount L 2  is smaller than the first displacement amount L 1 . Since the connecting member  57  movable in the first and second directions D 1 , D 2  with respect to the protecting member  56  and the holding member  58  is interposed between the protecting member  56  and the holding member  58  in this embodiment, the second displacement amount L 2  is even smaller than the first displacement amount L 1 . In this way, a protrusion amount of the holding member  58  protruding in the second direction D 2  from the second insertion hole  44  is reduced when the protecting member  56  is located at the second position P 2 . 
     In the process of displacing the protecting member  56  from the first position P 1  to the second position P 2 , the second terminals  32  are inserted into the first through holes  61 . Thus, when the protecting member  56  is located at the second position P 2 , the second terminals  32  are passed through the first through holes  61 . When the protecting member  56  is located at the second position P 2 , the protecting portions  37  are passed through the second through holes  62 . When the protecting member  56  is located at the second position P 2 , the shield members  33  are passed through the second through holes  62 . When the protecting member  56  is located at the second position P 2 , the holding portion  38  is passed through the third through hole  63 . Thus, the protecting member  56  located at the second position P 2  is located at a position between the tips of the second terminals  32  and the facing surface  41  in the first direction D 1 . In short, the second position P 2  is the position between the tips of the second terminals  32  and the facing surface  41  in the first direction D 1 . 
     When the protecting member  56  is located at the second position P 2 , the second terminals  32  are passed through the first through holes  61 , thereby being exposed from the protecting member  56 . In this way, the second terminals  32  can contact the first terminals  22 . Specifically, when the first and second connectors  20 ,  30  are assembled, the second terminals  32  are inserted into the region surrounded by the inner peripheral wall  26 . As a result, the second terminals  32  contact the first terminals  22 . If the first and second connectors  20 ,  30  are disassembled, the protecting member  56  is displaced from the second position P 2  to the first position P 1  by being pressed by the pressing members  59 . 
     As described above, the protecting member  56  is displaced between the first position P 1  and the second position P 2  by moving in the first and second directions D 1 , D 2 . That is, the protecting member  56  is displaced to the first position P 1  by being pressed by the pressing members  59  unless the first and second connectors  20 ,  30  are assembled. The protecting member  56  is displaced to the second position P 2  by being pressed by the first connector  20  when the first and second connectors  20 ,  30  are assembled. To summarize, as the first and second connectors  20 ,  30  are assembled, the protecting member  56  is displaced to the second position P 2 . As the first and second connectors  20 ,  30  are disassembled, the protecting member  56  is displaced to the first position P 1 . 
     The protecting member  56  moves in the first and second directions D 1 , D 2  along the protecting portions  37  when being displaced between the first position P 1  and the second position P 2 . That is, the protecting member  56  moves while being guided by the protecting portions  37 . Thus, the protecting portions  37  guide a movement of the protecting member  56 . In this embodiment, the holding portion  38  also guides the movement of the protecting member  56 . 
     Next, functions and effects of this embodiment are described. 
     (1) The protecting member  56  includes the first through holes  61  for insertion of the second terminals  32  and the second through holes  62  for insertion of the protecting portions  37 . The protecting member  56  is displaced between the first position P 1  between the tips of the protecting portions  37  and the tips of the second terminals  32  in the first direction D 1  and the second position P 2  between the tips of the second terminals  32  and the facing surface  41  in the first direction D 1 . 
     According to the above configuration, the second terminals  32  are not passed through the first through holes  61  when the protecting member  56  is located at the first position P 1 . In this case, the second terminals  32  are protected by the protecting member  56  without being exposed from the protecting member  56 . When the protecting member  56  is located at the second position P 2 , the second terminals  32  are passed through the first through holes  61 . In this case, the second terminals  32  are exposed form the protecting member  56 . 
     Both when the protecting member  56  is located at the first position P 1  and when the protecting member  56  is located at the second position P 2 , the protecting portions  37  are passed through the second through holes  62 . Thus, the protecting member  56  moves while being guided by the protecting portions  37  when the protecting member  56  is displaced between the first position P 1  and the second position P 2 . That is, the protecting portions  37  guide the protecting member  56 . In this way, it is suppressed that the protecting member  56  rubs against the second terminals  32 . As a result, the wear of the second terminals  32  is suppressed. 
     (2) The protecting portions  37  are provided to surround the second terminals  32  when the second housing  31  is viewed from the second direction D 2 . 
     According to the above configuration, the protecting member  56  is unlikely to be inclined when moving in the first and second directions D 1 , D 2  as compared to the case where the protecting portions  37  have, for example, a mere flat shape. In this way, the wear of the second terminals  32  can be suppressed. For example, if the protecting member  56  moves in the first and second directions D 1 , D 2  in an inclined state, the protecting member  56  easily rubs against the second terminals  32 . 
     (3) The shield members  33  made of metal are provided along the protecting portions  37 . 
     According to the above configuration, the shield members  33  are provided to surround the second terminals  32 . Thus, a possibility of noise entrance from the second terminals  32  is reduced. 
     (4) The first through holes  61  and the second through holes  62  are respectively independent holes. 
     According to the above configuration, an area of the holes open in the protecting member  56  is reduced as compared to the case where the first and second through holes  61 ,  62  are constituted by one common hole. Since the second terminals  32  become less likely to be exposed from the protecting member  56  in this way, a possibility that the worker&#39;s fingers touch the second terminals  32  is reduced. 
     (5) The pressing members  59  provided between the facing surface  41  and the protecting member  56  press the protecting member  56  in the first direction D 1 . The protecting member  56  is pressed in the second direction D 2  by the first connector  20  when the first and second connectors  20 ,  30  are assembled. 
     According to the above configuration, as the first and second connectors  20 ,  30  are assembled, the protecting member  56  is displaced to the second position P 2 . As the first and second connectors  20 ,  30  are disassembled, the protecting member  56  is displaced to the first position P 1 . Thus, a possibility that the protecting member  56  is inadvertently displaced to the second position P 2  is reduced. That is, since the second terminals  32  become less likely to be exposed from the protecting member  56 , a possibility that the worker&#39;s fingers touch the second terminals  32  is reduced. 
     (6) The first hook part  52  is in contact with the protecting member  56  when the protecting member  56  is located at the first position P 1 . 
     According to the above configuration, a movement in the first direction D 1  of the protecting member  56  located at the first position P 1  is suppressed by the contact of the first hook part  52  with the protecting member  56 . In this way, a possibility of detachment of the protecting member  56  from the second housing  31  is reduced. 
     (7) The second hook part  74  is in contact with the second housing  31  when the protecting member  56  is located at the first position P 1 . 
     According to the above configuration, a movement in the first direction D 1  of the protecting member  56  located at the first position P 1  is suppressed by the contact of the second hook part  74  with the first housing  31 . In this way, a possibility of detachment of the protecting member  56  from the second housing  31  is reduced. 
     (8) The second connector  30  includes the connecting member  57  to be connected to the protecting member  56  and the holding member  58  in a state movable in the first and second directions D 1 , D 2  with respect to the protecting member  56  and the holding member  58 . 
     According to the above configuration, the second displacement amount L 2  of the holding member  58  is smaller than the first displacement amount L 1  of the protecting member  56  when the protecting member  56  is displaced from the first position P 1  to the second position P 2 . By the smaller second displacement amount L 2 , a protrusion amount of the holding member  58  protruding out from the second housing  31  in the second direction D 2  from the second insertion hole  44  becomes smaller when the protecting member  56  is located at the second position P 2 . In this way, a possibility of interference of the holding member  58  with another member is reduced. 
     (9) Since the protecting portions  37  for protecting the second terminals  32  guide the protecting member  56 , the configuration of the second connector  30  can be simplified as compared to the case where a mechanism for protecting the second terminals and a mechanism for guiding the protecting member  56  are separately provided. 
     (Modifications) 
     The above embodiment can be modified and carried out as follows. The above embodiment and the following modifications can be carried out in combination without technically contradicting each other.
         The protecting mechanism  34  may include the protecting member  56  and the holding member  58  without including the connecting member  57 . In this case, the holding member  58  is connected to the protecting member  56  in a state movable in the first and second directions D 1 , D 2  with respect to the protecting member  56 . Also in this modification, the second displacement amount L 2  can be made smaller than the first displacement amount L 1 .   The protecting mechanism  34  may include only the protecting member  56  without including the connecting member  57  and the holding member  58 . Also in this case, the protecting member  56  can be held by the holding portion  38 .   The holding portion  38  may not include the first hook part  52 . Also in this case, the protecting member  56  can be held by the second hook part  74 .   The protecting member  56  may include the second hook part  74 . In this case, the protecting mechanism  34  includes, for example, only the protecting member  56  without including the connecting member  57  and the holding member  58 . Also in this modification, the protecting member  56  can be held by the second hook part  74 .   The first and second through holes  61 ,  62  may be constituted by one common hole. Furthermore, the first, second and third through holes  61 ,  62  and  63  may be constituted by one common hole.   The protecting member  56  may be displaced between the first position P 1  and the second position P 2 , for example, by the operation of a worker without depending on the assembling of the first and second connectors  20 ,  30 .   The protecting portions  37  may have a uniform cross-sectional shape over a length range of the protecting portions  37  at least corresponding to a stroke length of the protecting member  56 . For example, the protecting portions  37  shown in  FIGS.  3 ,  5  and  6    extend in parallel to the first direction D 1  and have a uniform cross-sectional shape over the entire protecting portions  37  in the first direction D 1 . The protecting portions  37  may be referred to as guide walls or linear rails. The protecting portions  37  and the protecting members  56  of the above embodiment may be respectively referred to as immovable guards and a movable guard. The tips of the protecting portions  37  may be referred to as guard upper ends.   As shown in  FIG.  3   , the protecting portion  37  serving as a guide wall may have a flat plate-like wall (also referred to as a first guide wall) arranged in parallel to the first part  53  of the second terminal  32 . Further, the guide wall may have a wall (also referred to as a second guide wall) connected to one end of the first guide wall when the guide wall is viewed from the second direction. The second guide wall may be in the form of a flat plate orthogonal to the first guide wall. Furthermore, the guide wall may have a wall (also referred to as a third guide wall) connected to the other end of the first guide wall when the guide wall is viewed from the second direction. The third guide wall may be in the form of a flat plate orthogonal to the first guide wall and parallel to the second guide wall.   As shown in  FIG.  3   , the third and fourth walls  48 ,  49  of the peripheral wall  36  may be in the form of flat plates parallel to the first guide wall. The first and second walls  46 ,  47  of the peripheral wall  36  may be in the form of flat plates parallel to the second and third guide walls.   As shown in  FIG.  3   , the second through hole  62  may be a groove-like hole conforming to the contour of the guide wall when viewed from the second direction. In particular, the second through hole  62  may include a groove-like hole part (also referred to as a first groove portion) into which the first guide wall is inserted. The first groove portion may extend straight in parallel to the first guide wall. Further, the second through hole  62  may include a groove-like hole part (also referred to as a second groove portion) which is connected to one end of the first groove portion and into which the second guide wall is inserted. The second groove portion may extend straight perpendicularly to the first groove portion. Furthermore, the second through hole  62  may include a groove-like hole part (also referred to as a third groove portion) which is connected to the other end of the first groove portion and into which the third guide wall is inserted. The third groove portion may extend straight perpendicularly to the first groove portion.   As shown in  FIGS.  3  and  4   , the shield member  33  may be provided along the outer surface of the guide wall. As shown in  FIG.  5   , a length from the tip of the shield member  33  to the facing surface  41  may be substantially equal to a distance from the protecting member  56  at the first position P 1  to the facing surface  41 .   A width of the second through hole  62  may be substantially equal to or slightly larger than the sum of a thickness of the guide wall and a thickness of the shield member  33 . In particular, a width of the first groove portion may be substantially equal to or slightly larger than the sum of a thickness of the first guide wall and the thickness of the shield member  33 . A width of the second groove portion may be substantially equal to or slightly larger than the sum of a thickness of the second guide wall and the thickness of the shield member  33 . A width of the third groove portion may be substantially equal to or slightly larger than the sum of a thickness of the third guide wall and the thickness of the shield member  33 .   As shown in  FIGS.  3  and  6   , the third through hole  63  may be provided in the center of the protecting member  56 . The first hook part  52  of the holding portion  38  may be caught in a central part of the protecting member  56  by being caught on the edge of the third through hole  63 .   For example, by providing the four positioning members  59  respectively at four corner positions of the protecting member  56  as shown in  FIGS.  5  and  6   , a plurality of the positioning members  59  may be rotationally symmetrically provided with respect to the center of the protecting member  56  so that the protecting member  56  is not inclined.   The facing surface  41  may be referred to as a base surface of the second housing  31 . The peripheral wall  36  of the embodiment may be referred to as a receptacle of the second housing  31 . The first direction D 1  of this embodiment may be referred to as a height direction of the peripheral wall  36 . The exposure opening  51  of the peripheral wall  36  of the embodiment may be referred to as a cutout-like lateral window of the peripheral wall  36 .       

     As shown by cross-section hatching in  FIGS.  5 ,  6 ,  9  and  10   , the second housing  31  may be made of resin, possibly insulating resin, and the second terminals  32  may be metal. The second housing  31  may be configured as a one-piece article as in a shown example. 
     As shown in  FIG.  1   , the protecting member  56  can stay at the first position P 1  with the first and second connectors  20 ,  30  separated. When the protecting member  56  is at the first position P 1 , a lateral end surface of the protecting member  56  may be partially exposed from the exposure opening  51  of the peripheral wall  36  and, for example, may cross the exposure opening  51  of the peripheral wall  36 . Accordingly, the single protecting member  56  at the first position P 1  is advantageous in suppressing the touch of worker&#39;s fingers approaching the second connector  30  from above the peripheral wall  36  with the second terminals  32  and is also advantageous in suppressing the touch of worker&#39;s fingers approaching the second connector  30  from a lateral side of the peripheral wall  36  with the second terminals  32  through the exposure opening  51  of the peripheral wall  36  when the worker connects the second and first connectors  30 ,  20 . 
     The present disclosure includes the following implementation examples. Reference signs of several constituent elements of the illustrative embodiment are given not for limitation, but for understanding assistance. Some of features described in the following implementation examples may be omitted or several of the features described in the implementation examples may be selected or extracted and combined. 
     [Addendum 1] A connector ( 30 ) including: 
     a housing ( 31 ) having a base surface ( 41 ); 
     a terminal ( 32 ) held in the housing ( 31 ) and projecting in a first direction (D 1 ) from the base surface ( 41 ); and 
     a protecting member ( 56 ) held in the housing ( 31 ) and configured to move in the first direction (D 1 ) and a second direction (D 2 ) opposite to the first direction (D 1 ) in the housing ( 31 ), 
     wherein: 
     the housing ( 31 ) includes a guide wall ( 37 ) for protecting the terminal ( 32 ), 
     the guide wall ( 37 ) projects in the first direction (D 1 ) from the base surface ( 41 ), 
     a projection amount of the guide wall ( 37 ) is larger than that of the terminal ( 32 ), 
     the protecting member ( 56 ) includes a first through hole ( 61 ) for insertion of the terminal ( 32 ) and a second through hole ( 62 ) for insertion of the guide wall ( 37 ), and 
     the protecting member ( 56 ) is displaced between a first position (P 1 ) between a tip of the guide wall ( 37 ) and a tip of the terminal ( 32 ) in the first direction (D 1 ) and a second position (P 2 ) between the tip of the terminal ( 32 ) and the base surface ( 41 ) in the first direction (D 1 ). 
     [Addendum 2] In one aspect of the present disclosure, the guide wall ( 37 ) may extend in parallel to the first direction (D 1 ) and have a uniform cross-sectional shape over an entire region in the first direction (D 1 ). 
     [Addendum 3] The connector ( 30 ) according to one aspect of the present disclosure may include a shield member ( 33 ) made of metal, 
     the shield member ( 33 ) may be provided along an outer surface of the guide wall ( 37 ), 
     the second through hole ( 62 ) may be a groove-like hole conforming to the contour of the guide wall ( 37 ) when viewed from the second direction (D 2 ), and 
     a width of the second through hole ( 62 ) may be substantially equal to or slightly larger than the sum of a thickness of the guide wall and a thickness of the shield member ( 33 ). 
     [Addendum 4] In one aspect of the present disclosure, 
     the terminal ( 32 ) may project from the base surface ( 41 ) and include a flat plate-like first part ( 53 ), 
     the guide wall ( 37 ) may include:
         a flat plate-like first guide wall arranged in parallel to the first part ( 53 );   a second guide wall connected to one end of the first guide wall when viewed from the second direction (D 2 ); and   a third guide wall connected to the other end of the first guide wall when viewed from the second direction (D 2 ), and       

     the second and third guide walls may be respectively in the form of flat plates orthogonal to the first guide wall. 
     [Addendum 5] In one aspect of the present disclosure, 
     the second through hole ( 62 ) may include: 
     a straight first groove portion into which the first guide wall is inserted, 
     a straight second groove portion which is connected to one end of the first groove portion when viewed from the second direction (D 2 ) and into which the second guide wall is inserted; and 
     a straight third groove portion which is connected to the other end of the first groove portion when viewed from the second direction (D 2 ) and into which the third guide wall is inserted, and 
     the second and third groove portions are respectively orthogonal to the first groove portion. 
     [Addendum 6] The connector ( 30 ) according to one aspect of the present disclosure may include a shield member ( 33 ) made of metal, 
     the shield member ( 33 ) may be provided along an outer surface of the guide wall ( 37 ), 
     a width of the first groove portion may be substantially equal to or slightly larger than the sum of a thickness of the first guide wall and a thickness of the shield member ( 33 ), 
     a width of the second groove portion may be substantially equal to or slightly larger than the sum of a thickness of the second guide wall and the thickness of the shield member ( 33 ), and 
     a width of the third groove portion may be substantially equal to or slightly larger than the sum of a thickness of the third guide wall and the thickness of the shield member ( 33 ). 
     [Addendum 7] In one aspect of the present disclosure, 
     the housing ( 31 ) may include a peripheral wall provided to surround the terminal ( 32 ) and the protecting member ( 56 ) when viewed from the second direction (D 2 ), and 
     the peripheral wall may include:
         a first wall and a second wall in the form of flat plates parallel to the second and third guide walls; and   a third wall and a fourth wall in the form of flat plates parallel to the first guide wall.       

     [Addendum 8] In one aspect of the present disclosure, a length from a tip of the shield member ( 33 ) to the base surface ( 41 ) may be equal to a distance from the protecting member ( 56 ) at the first position (P 1 ) to the base surface ( 41 ). 
     [Addendum 9] In one aspect of the present disclosure, 
     the housing ( 31 ) may include a holding portion ( 38 ) projecting in the first direction (D 1 ) from the base surface ( 41 ), 
     a projection amount of the holding portion ( 38 ) may be larger than that of the terminal ( 32 ) and smaller than that of the guide wall ( 37 ), 
     the holding portion ( 38 ) may include a first hook part ( 52 ) on a tip thereof, 
     the protecting member ( 56 ) may include a third through hole ( 63 ) for insertion of the holding portion ( 38 ), 
     the third through hole ( 63 ) may be provided in a center of the protecting member ( 56 ), and 
     the first hook part ( 52 ) may be caught in a central part of the protecting member ( 56 ) by being caught on an edge of the third through hole ( 63 ). 
     [Addendum 10] The connector ( 30 ) according to one aspect of the present disclosure may include a plurality of pressing members ( 58 ) provided between the base surface ( 41 ) and the protecting member ( 56 ), 
     each of the plurality of pressing members ( 58 ) may press the protecting member ( 56 ) in the first direction (D 1 ), and 
     the plurality of pressing members ( 58 ) may be rotationally symmetrically provided with respect to a center of the protecting member ( 56 ) so that the protecting member ( 56 ) is not inclined. 
     [Addendum 11] A connector ( 30 ) according to one aspect of the present disclosure may include: 
     a resin housing ( 31 ) having a base surface ( 41 ) and a receptacle ( 36 ) rising in a height direction (D 1 ) from the base surface ( 41 ); 
     a terminal group including a plurality of metal terminals ( 32 ) arranged inside the receptacle ( 36 ), each metal terminal ( 32 ) of the terminal group extending in the height direction (D 1 ) and having a straight part with a free end; and 
     an immovable guard ( 37 ) and a movable guard ( 56 ) arranged inside the receptacle ( 36 ) and configured to guide the terminal group, 
     wherein: 
     the immovable guard ( 37 ) may be arranged inside the receptacle ( 36 ) and outside the terminal group when the connector ( 30 ) is viewed from the height direction (D 1 ) and have a guard upper end below an uppermost end of the receptacle ( 36 ) and above the free ends of the plurality of metal terminals ( 32 ) of the terminal group, 
     the immovable guard ( 37 ) may be configured as a linear rail ( 37 ) for guiding the movable guard ( 56 ) so that the movable guard ( 56 ) linearly reciprocally moves between a first height position (P 1 ) above the free ends of the plurality of metal terminals ( 32 ) of the terminal group in the height direction (D 1 ) and a second height position (P 2 ) below the free ends of the plurality of metal terminals ( 32 ) of the terminal group in the height direction (D 1 ), and 
     the movable guard ( 56 ) may include a first through hole ( 61 ) for allowing passage of the straight parts of the metal terminals ( 32 ) and a second through hole ( 62 ) for allowing passage of the immovable guard ( 37 ). 
     [Addendum 12] In one aspect of the present disclosure, 
     the immovable guard ( 37 ) may be constituted by a plurality of angular linear rails each having one or more corner portions, and 
     the second through hole ( 62 ) of the movable guard ( 56 ) may include a plurality of corner portions respectively corresponding to the corner portions of the plurality of angular linear rails. 
     [Addendum 13] In one aspect of the present disclosure, 
     the receptacle ( 36 ) may include a cutout-like lateral window ( 51 ) on a lateral side in a direction different from the height direction (D 1 ), and 
     a lateral end surface of the movable guard ( 56 ) may cross the cutout-like lateral window ( 51 ) of the receptacle ( 36 ) when the movable guard ( 56 ) is at the first height position (P 1 ). 
     LIST OF REFERENCE NUMERALS 
     
         
         
           
               10  electrical connection device 
               20  first connector 
               21  first housing 
               22  first terminal 
               23  first accommodating portion 
               24  second accommodating portion 
               25  outer peripheral wall 
               26  inner peripheral wall 
               27  sealing member 
               28  accommodation opening 
               29  wire 
               30  second connector 
               31  second housing 
               32  second terminal 
               33  shield member 
               34  protecting mechanism 
               35  fixing portion 
               36  peripheral wall 
               37  protecting portion 
               38  holding portion 
               41  facing surface 
               42  fixing hole 
               43  first insertion hole 
               44  second insertion hole 
               45  connection opening 
               46  first wall 
               47  second wall 
               48  third wall 
               49  fourth wall 
               51  exposure opening 
               52  first hook part 
               53  first part 
               54  second part 
               56  protecting member 
               57  connecting member 
               58  holding member 
               59  pressing member 
               61  first through hole 
               62  second through hole 
               63  third through hole 
               64  protecting part 
               65  pressing part 
               66  coupling part 
               67  mounting part 
               68  first pin 
               71  first hole 
               72  second pin 
               73  second hole 
               74  second hook part 
               75  third hook part 
             D 1  first direction 
             D 2  second direction 
             L 1  first displacement amount 
             L 2  second displacement amount 
             P 1  first position 
             P 2  second position