JP4885504B2 - Electrical connection device - Google Patents

Description

  The present invention relates to an electrical connection device connected to a connected housing element that supports at least one connected terminal.

  2. Description of the Related Art Conventionally, an ignition tube connector for an automobile airbag device includes an insulating housing that supports an electrical contact and a ferrite bead inside, and an electric cover that covers the insulating housing and covers the electrical contact and the ferrite bead. A known connection device is known (see Patent Document 1). In the electrical connection device described in Patent Document 1, the insulating housing is provided with a substantially cylindrical housing body and a protruding portion protruding from the housing body, and the lid body in the lid body is the housing body and the protruding portion. It is comprised so that the upper part of may be covered. An electric contact is attached to one end, and an electric wire arranged so as to be pulled out from the housing body is supported between the protruding portion and the lid body. A pair of lid locking projections are formed on both sides of the protrusion, and an opening and a locking claw are provided on both sides of the lid body so that the pair of lid locking projections are locked. A pair of locking portions is formed. Since the locking claw abuts on the lid locking projection and the locking portion engages with the locking projection, the lid body is prevented from being detached from the protruding portion and the electric wire is supported. ing.

JP-A-10-241785 (page 3-4, FIG. 1-3)

  In the electrical connection device described in Patent Document 1, in the state where the electric wire is drawn straight out from the housing main body of the insulating housing in the direction in which the protruding portion protrudes, the lid locking protrusion and the lid main body of the protruding portion The engaging portion is engaged with the engaging portion at an appropriate position. However, when the electric wire is pulled in a direction that causes the lid body to be detached from the protruding portion due to the external force acting on the wire and the electric wire and the lid body interfering with each other, Thus, the locking portion of the lid body does not engage at an appropriate position, and a local load acts on the edge-shaped portion of the lid locking projection. For this reason, there exists a problem that it is easy to cause the damage of a cover body latching protrusion.

  In view of the above circumstances, the present invention provides an electrical connection device having a main body housing that supports connection terminals and a cover housing that is attached to the main body housing so as to be pulled out from these housings. Even when an external force is applied to the arranged cable, it is possible to prevent the local load from acting intensively on the mechanism for preventing the cover housing from being detached from the main body housing. An object of the present invention is to provide an electrical connection device that can be used.

Means and effects for solving the problems

The electrical connection device of the present invention relates to an electrical connection device that is connected to a connected housing element that supports at least one connected terminal.
In order to achieve the above object, the present invention has several features as follows. That is, the present invention comprises the following features alone or in appropriate combination.

In order to achieve the above object, a first feature of the electrical connection device according to the present invention is characterized in that at least one connection terminal that is electrically connected to the connected terminal, and a body housing that supports the connection terminal therein. And a cover housing attached so as to be covered with the main body housing, and a connecting housing element connected by fitting to the connected housing element, and a protrusion in the connecting housing element A cable support portion for supporting a cable disposed at one end so that the connection terminal is attached and pulled out from the main body housing, wherein the upper protrusion portion and the main body are formed on the cover housing. A cable support portion provided so that a lower projecting portion formed in the housing sandwiches the cable; A convex part provided on one of the upper projecting part and the lower projecting part, and a convex part provided on the other of the upper projecting part and the lower projecting part and engaged with the convex part. The cable support portion protrudes from the connecting housing element on an engaging surface of the convex portion that comes into contact with the concave portion when the concave portion is formed so that the convex portion and the concave portion are engaged with each other. In the engaging surface in the concave portion that comes into contact with the convex portion when the convex portion and the concave portion are engaged with each other, the inclined surface formed to be a surface inclined with respect to the direction in which it is provided , And an inclined surface formed so as to come into contact with the inclined surface of the convex portion .

  According to this configuration, when the cover housing is attached to the main body housing where the connection terminal is supported, the cable is supported by the cable support portion including the upper protrusion portion and the lower protrusion portion. Is supported. At this time, the cover housing is prevented from being detached from the main body housing by the engagement between the convex portion and the concave portion. In this state, if an external force is applied to the cable arranged so as to be pulled out from the cable support portion, the cable and the upper protruding portion interfere with each other and the upper protruding portion is interfered. The cable is pulled in a direction in which the portion is detached from the lower projecting portion. At this time, the concave portion strongly comes into contact with the inclined surface that is inclined with respect to the protruding direction of the cable support portion on the engaging surface of the convex portion, and in the convex portion, the load acting from the concave portion on the inclined surface. Can be received in a dispersed state. For this reason, even if it is a case where an external force acts on a cable and a cable and an upper side protrusion part interfere, it can prevent that a load concentrates locally in a convex part. Therefore, according to the present invention, even when an external force acts on the cable arranged so as to be pulled out from the connecting housing element, a local load is applied to the mechanism for preventing the cover housing from being detached from the main body housing. It can suppress damaging by acting intensively.

  A second feature of the electrical connection device according to the present invention is that the upper projecting portion covers a side portion of the lower projecting portion in a state where the convex portion and the concave portion are engaged. A side wall portion is provided, and the lower projecting portion projects from the end of the lower projecting portion toward the side and abuts against the end portion of the side wall portion. Thus, there is provided a presser part that regulates the displacement of the side wall part.

  According to this configuration, when an external force acts on the cable and the cable and the upper projecting portion interfere with each other, the end portion of the side wall portion of the upper projecting portion comes into contact with the presser portion of the lower projecting portion to Displacement will be regulated. For this reason, the load can be distributed and supported not only between the convex part and the concave part but also between the end part of the side wall part and the pressing part, and the load is concentrated locally on the convex part. Further prevention is possible.

  A third feature of the electrical connection device according to the present invention is that the engaging surface is provided with a curved surface that is adjacent to the inclined surface and is formed to be smoothly continuous with the inclined surface. It is that you are.

  According to this configuration, since the engaging surface of the convex portion is formed as a smooth curved surface without forming an edge-like portion at the end portion of the inclined surface, local loads are concentrated on the end portion of the inclined surface. Can be prevented.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. The present invention can be widely applied to an electrical connection device connected to a connected housing element that supports at least one connection terminal. The present invention can be used as various connectors used in automobiles, for example, it can be used as an electrical connection device for a squib that ignites by energizing a gas generator in an automotive airbag gas system. It can be applied to a wider range of applications, not limited to applications, and can be applied to many different environments and various purposes.

  1 to 6 illustrate an electrical connection device 1 according to an embodiment of the present invention. FIG. 1 is a perspective view of the electrical connection device 1 as viewed from above, and FIG. 2 is a perspective view of the electrical connection device 1 in an upside down state (with the bottom portion facing up). FIG. 3 is a plan view showing a state in which the electrical connecting device 1 is fitted and connected to the connected housing element 2, and FIG. 4 is an exploded perspective view of the electrical connecting device 1. 5 and 6 show a state in which the electrical connecting device 1 is fitted and connected to the housing element 2 to be connected. FIG. 5 is a perspective view showing a cut-out cross section. FIG. 6 is a cross-sectional view.

  As shown in FIGS. 1 to 6, the electrical connection device 1 is configured in the form of a plug connected to the connected housing element 2 in the form of a socket. The cable 9 having one end connected to the pair of connection terminals 11 supported in the electrical connection device 1 is connected to an airbag control system (not shown) at the other end. The connected housing element 2 is provided as part of an airbag ignition device (squib) (not shown). The connected housing element 2 supports a pair of pin-like terminals 10 which are connected terminals. By fitting the electrical connection device 1 to the connected housing element 2, the electrical connection device 1 and the connected housing element 2 are engaged and mechanically connected, and a pair of connection terminals 11 and the pair of pin-shaped terminals 10 are in contact with each other and are electrically connected. The squib burns when sufficient electrical energy is applied via the cable 9 based on a command from the airbag control system in a state where the electrical connecting device 1 is connected to the housing element 2 to be connected. By this combustion, the gas generating material is ignited and an airbag (not shown) is deployed.

  As shown in FIG. 4, the electrical connection device 1 includes a connection terminal 11, a connection housing element 12, a cable side rubber seal 15, a ferrite member 16, a terminal side rubber seal 17, and a seal cover 18.

  As shown in FIGS. 4 to 6, the connection terminals 11 are configured as a pair of female connection terminals, and each connection terminal 11 is attached to one end of the cable 9 by means such as crimping. As described above, the connection terminal 11 is a male pin supported by the connected housing element 2 by fitting and connecting the electrical connecting device 1 and the connected housing element 2. The terminal 10 is electrically connected. In the present embodiment, the electrical connection device 1 including a pair (two poles) of connection terminals 11 is described as an example. However, the electrical connection device is for connecting terminals of one pole or three poles or more. However, the present invention can be applied.

  As shown in FIGS. 4 to 6, the connecting housing element 12 includes a cover housing 13 and a main body housing 14, and is connected to the connected housing element 2 by fitting. Yes. Both the cover housing 13 and the main body housing 14 are formed of a non-conductive plastic material.

  FIG. 7 is a perspective view of the body housing 14 of the connecting housing element 12. As shown in FIGS. 4 to 7, the main body housing 14 is configured as a component that supports the connection terminal 11 and has a cable-side rubber seal 15 (described later) disposed therein to be fitted to the connected housing element 2. ing. The main body housing 14 includes a terminal support portion 19, a tubular portion 20, and a lower support portion 45 that is a part of a cable support portion 21 described later.

  The terminal support portion 19 of the main body housing 14 forms a tip portion that is fitted to the connected housing element 2 in the main body housing 14, and supports the connection terminal 11 inside. A hole 23 through which the pin-like terminal 10 is inserted is formed in the bottom surface 22 which is the tip side of the terminal support portion 19.

  The cylindrical portion 20 of the main body housing 14 is configured as a body portion of the main body housing 14 that extends in a substantially cylindrical shape. Inside the cylindrical portion 20, the end of the connection terminal 11 protrudes and the cable 9 crimped to the connection terminal 11 is arranged to be drawn out. In addition, a ferrite member 16 into which the connection terminal 11 and the cable 9 are inserted and a cable-side rubber seal 15 are accommodated inside the cylindrical portion 20. Further, the lower support portion 45 of the main body housing 14 is provided so as to protrude laterally at the upper portion of the cylindrical portion 20 (the end portion opposite to the tip portion).

  FIG. 9 is a perspective view of the cover housing 13 of the connecting housing element 12. As shown in FIGS. 4 to 6 and 9, the cover housing 13 is configured as a component that is attached so as to be covered with the main body housing 14. And this cover housing 13 is provided with the cover part 25, the surrounding wall part 26, and the upper side support part 44 which is a part of the cable support part 21 mentioned later. The lid portion 25 is formed so as to cover and close the upper opening of the tubular portion 20 of the main body housing 14. The lid portion 25 is formed integrally with the upper support portion 44, and the upper support portion 44 is provided so as to protrude laterally with respect to the peripheral wall portion 26. The peripheral wall portion 26 is formed to have a shape along the peripheral wall of the cylindrical portion 20 of the main body housing 14, and is fitted while being slidably contacted along the peripheral wall of the cylindrical portion 20. Further, an engagement protrusion 27 formed in a shape that spreads from the lower end side toward the upper end side is provided on the lower end side (the front end side fitted into the main body housing 14) of the peripheral wall portion 26. The engaging protrusions 27 extend along the inner circumference of the connected housing element 2 when the connecting housing element 12 with the cover housing 13 fitted into the main body housing 14 is fitted into the connected housing element 2. It engages with the engaging groove 28 formed in the above manner. The engagement between the engagement protrusion 27 and the engagement groove 28 in this way completes the mechanical connection between the electrical connecting device 1 and the connected housing element 2.

  As shown in FIGS. 4 to 6, the cable-side rubber seal 15 passes between the cover housing 13 and the main body housing 14 and reaches the contact area between the pin-like terminal 10 and the connection terminal 11 (see FIG. 6). ) Is configured as a rubber stopper that blocks water entry and exhibits a waterproof function. The cable side rubber seal 15 is disposed inside the main body housing 14. The cable-side rubber seal 15 is inserted with the side peripheral portion 46 that contacts the inner wall 48 of the main body housing 14 and the cable 9 having the connection terminal 11 attached to one end thereof, and contacts the outer periphery of the cable 9. A pair of cable holes 29 formed so as to have an inner diameter is provided (see FIG. 6). The side circumferential portion 46 and the cable hole 29 are provided with ribs, and the ribs are elastically deformed and are brought into close contact with the inner wall 48 and the cable 9 with a higher contact pressure, so that the cable-side rubber seal 15 is sealed. It is formed and the waterproof function is fulfilled.

  The ferrite member 16 is incorporated in the electrical connection device 1 as a means for removing electromagnetic noise. In the airbag system built in the vehicle, the ferrite member 16 causes a noise current to flow into the squib due to various electromagnetic waves from the outside such as cables, various electronic devices in the vehicle, radios, mobile phones, etc. It is prevented by the noise removal function. As shown in FIGS. 4 to 6, the ferrite member 16 has a pair of through holes 50 through which the pair of connection terminals 11 are inserted.

  Here, the connecting housing element 12 described above will be described in more detail. As shown in FIGS. 4 to 6, the connecting housing element 12 is provided with a cable support portion 21. The cable support portion 21 is configured to support the cable 9 that is arranged so that the connection terminal 11 is attached to one end and is drawn out from the main body housing 14. As described above, the cable support portion 21 includes the upper projecting portion 44 formed on the cover housing 13 and the lower projecting portion 45 formed on the main body housing 14. The upper projecting portion 44 and the lower projecting portion 45 are drawn out of the cable 9 arranged in a state of being pulled out and bent from the main body housing 14 when the cover housing 13 is attached to the main body housing 14. The portion 49 is provided so as to sandwich the upper and lower portions. At this time, the cable 9 is supported in a state of being fitted in the groove 24 formed in the lower projecting portion 45. The upper projecting portion 44 and the lower projecting portion 45 are respectively provided with positioning ribs 51 formed as projecting portions for positioning the cable 9 by pressing the lead portion 49 of the cable 9 at appropriate positions. It has been.

  FIG. 8 is a partially enlarged perspective view of the lower protruding portion 45 of the main body housing 14. As shown in FIGS. 7 and 8, the lower projecting portion 45 of the cable support portion 21 is provided with convex portions 31 on the side portions 30 on both sides thereof (in FIGS. 7 and 8, only one of them is provided). Is shown). Further, as well shown in FIG. 9, the upper projecting portion 44 of the cable support portion 21 covers the side portion 30 of the lower projecting portion 45 in a state where the cover housing 13 is attached to the main body housing 14. Side wall portions 35 to be disposed are provided on both sides. A concave portion 36 is provided on the inner side of the side wall portion 35 so as to engage with the convex portion 31 of the lower projecting portion 45. That is, when the cover housing 13 is attached to the main body housing 14, the cable 9 is sandwiched between the upper projecting portion 44 and the lower projecting portion 45, and further, the cable 9 is lowered by the side wall portion 35 of the upper projecting portion 44. The side portion 30 of the side projecting portion 45 is covered, and the convex portion 31 and the concave portion 36 are engaged with each other. Further, the lower projecting portion 45 is provided with a presser portion 32 further projecting toward the sides on both sides at the end thereof. The pressing portion 32 is provided so as to abut on the end portion of the side wall portion 35 of the upper protruding portion 44 in a state where the cover housing 13 is attached to the main body housing 14. Displacement is regulated.

  Further, as shown well in FIG. 8, the convex portion 31 of the lower projecting portion 45 has a convex portion that contacts the concave portion 36 when the convex portion 31 and the concave portion 36 of the upper projecting portion 44 are engaged. In addition to the parallel surface 33a, the engaging surface 33 in 31 is provided with an inclined surface 33b and a curved surface 33c. The parallel surface 33a is formed to be a surface parallel to the projecting direction, which is the direction in which the lower projecting portion 45 projects from the main body housing 14. The inclined surface 33b is formed to be a surface inclined with respect to the projecting direction. The curved surface 33c is formed as a curved surface which is adjacent to the inclined surface 33b and smoothly continues to the inclined surface 33b. Note that an engaging surface having a shape that engages with the engaging surface 33 of the convex portion 31 of the lower protruding portion 45 is formed in the concave portion 36 of the upper protruding portion 44.

  The terminal-side rubber seal 17 and the seal cover 18 will be described as the remaining components in the electrical connecting device 1. First, as shown in FIGS. 4 to 6, the terminal-side rubber seal 17 is disposed so as to come into contact with the bottom surface 22 of the main body housing 14, and is provided on the terminal support portion 19 of the main body housing 14 so as to be pinned terminal 10. Is provided as a rubber plug that provides a waterproof function by blocking water intrusion in a path (see FIG. 6) that passes through the hole 23 through which the pin-like terminal 10 and the connection terminal 11 contact. Yes. The terminal-side rubber seal 17 is provided with a flat plate portion 38 and a cylindrical edge portion 37. The flat plate portion 38 is formed so as to have an inner diameter that contacts the outer periphery of the pin-shaped terminal 10 while the pin-shaped terminal 10 is inserted when the main body housing 14 and the connected housing element 2 are fitted. A pin hole 39 is provided. On the inner periphery of the pin hole 39, a plurality of ribs formed so as to protrude are provided. Further, the cylindrical edge portion 37 is formed so as to stand up around the flat plate portion 38 and is formed so as to cover the outer periphery of the terminal support portion 19 on the distal end side of the main body housing 14. On the outer peripheral side and the inner peripheral side of the cylindrical edge portion 37, a plurality of ribs formed so as to protrude are provided. As described above, since the ribs are provided on the inner periphery of the pin hole 39 and the inner periphery and the outer periphery of the cylindrical edge portion 37, the ribs are elastically deformed and the pin-shaped terminal 10 or By being in close contact with the terminal support portion 19 and the seal cover 18, a sealed state is formed by the terminal-side rubber seal 17, and a waterproof function is achieved.

  As shown in FIGS. 4 to 6, the seal cover 18 is disposed between the bottom surface 22 of the main body housing 14 and the housing element 2 to be connected, and the terminal side rubber seal 17 is connected to the bottom surface 22 of the main body housing 14. It is provided as a mechanism for holding between. The seal cover 18 is formed in a cap shape that covers the terminal-side rubber seal 17 and is attached to the terminal support portion 19 of the main body housing 14 so as to cover the tip side. When the main body housing 14 is fitted to the connected housing element 2, the seal cover 18 abuts the connected housing element 2 so that the terminal side rubber seal 17 is directed toward the bottom surface 22 of the main body housing 14. It will be arrange | positioned so that it may press.

  Next, the process of assembling the electrical connection device 1 having the above-described configuration will be described. First, as shown in the perspective view of FIG. 10, the terminal-side rubber seal 17 is fitted into the terminal support portion 19 of the main body housing 14 in the direction of the arrow in the figure and covers the bottom surface 22 of the main body housing 14. It is attached to become. When the terminal side rubber seal 17 is attached to the main body housing 14, the seal cover 18 is attached in the direction of the arrow in the drawing so as to cover the terminal side rubber seal 17 as shown in FIG. 11. At this time, the engagement hole 41 provided in the seal cover 18 engages with the engagement protrusion 42 provided in the main body housing 14, so that the seal cover 18 holds the terminal-side rubber seal 17. It will be fixed to the housing 14.

  When the terminal-side rubber seal 17 and the seal cover 18 are attached to the main body housing 14, the ferrite member 16 is then moved from the opening 43 provided above the cylindrical portion 20 of the main body housing 14 as shown in FIG. It is inserted in the direction and is arranged inside the cylindrical portion 20. When the ferrite member 16 is disposed inside the main body housing 14, subsequently, as shown in FIG. 13, the cable-side rubber seal 15 is inserted from the opening 43 and disposed inside the main body housing 14.

  When the ferrite member 16 and the terminal-side rubber seal 15 are disposed inside the main body housing 14, the connection terminal 11 is inserted from the opening 43 of the main body housing 14 in the direction of the arrow as shown in FIG. Then, the connection terminal 11 is inserted through the cable hole 29 of the terminal side rubber seal 15 and is further inserted into the through hole 32 of the ferrite member 16. Thereafter, as shown in FIG. 15, the cable 9 connected to the connection terminal 11 is bent and further attached to be fitted into the groove 24 of the cable support portion 21 of the main body housing 14. And finally, as shown in FIG. 16, the electrical connection apparatus 1 is completed by attaching so that the cover housing 13 may have covered the main body housing 14 in the arrow direction in the figure. At this time, in the cable support portion 21, the concave portion 36 of the upper support portion 44 and the convex portion 31 of the lower support portion 45 are engaged.

  The electrical connection device 1 assembled as shown in FIG. 16 is fitted to the connected housing element 2, and as shown in FIGS. 5 and 6, the connected housing element 2 and the machine At this time, the pin-shaped terminal 10 and the connection terminal 11 are electrically connected.

  Then, in a state where the connection between the electrical connecting device 1 and the connected housing element 2 is completed, the cable 9 drawn from the cable support portion 21 is connected to the cable 9 as shown by an arrow A in FIG. When an external force acts in the direction of pulling up the cable, a force acts on the upper projecting portion 44 from the cable 9 in a direction in which the upper projecting portion 44 is pulled away from the lower projecting portion 45. FIG. 17 is an enlarged view of the vicinity of the convex portion 31 of the lower projecting portion 45, but when the external force in the direction of arrow A shown in FIG. As shown by an arrow B, a load mainly acts on the inclined surface 33b on the convex portion 31 of the lower projecting portion 45 from 36. Thereby, a load can be distributed and supported by the inclined surface 33b, and it can prevent that a load acts on one location of the convex part 31 intensively. On the other hand, as shown in a schematic diagram for comparative explanation in FIG. 18, for example, a protrusion 31 a as in the prior art is provided on a side portion 30 a of a lower protruding portion 45 a provided similarly to the lower protruding portion 45. In this case, when an external force is applied to the cable 9, the load acting in the direction of the arrow C is concentrated on the edge portion of the protrusion 31a, and the protrusion 31a is likely to be damaged.

  According to the electrical connection device 1 described above, when the cover housing 13 is attached to the main body housing 14 on which the connection terminals 11 are supported, the upper projecting portion 44 and the lower projecting portion 45 are provided. The cable 9 is supported by a cable support portion 21 configured to include At this time, the cover housing 13 is prevented from being detached from the main body housing 14 by the engagement between the convex portion 31 and the concave portion 36. In this state, when an external force is applied to the cable 9 arranged so as to be pulled out from the cable support portion 21 and pulled up toward the upper protruding portion 44, the cable 9 and the upper protruding portion 44 interfere with each other. Then, the cable 9 is pulled in a direction in which the upper protruding portion 44 is detached from the lower protruding portion 45. At this time, the concave portion 36 strongly comes into contact with the inclined surface 33b inclined with respect to the protruding direction of the cable support portion 21 on the engaging surface 33 of the convex portion 31, and the inclined surface 33b The load acting from the recess 36 can be received in a dispersed state. For this reason, even when the external force acts on the cable 9 and the cable 9 and the upper projecting portion 44 interfere with each other, it is possible to prevent the load from being concentrated locally at the convex portion 31.

  Therefore, according to the electrical connecting device 1, even when an external force is applied to the cable 9 arranged so as to be pulled out from the connecting housing element 12, the cover housing 13 is prevented from being detached from the main body housing 14. It can suppress that a local load acts on a mechanism intensively, and it breaks.

  Further, according to the electrical connecting device 1, when an external force acts on the cable 9 and the cable 9 and the upper protruding portion 44 interfere with each other, the end portion of the side wall portion 35 of the upper protruding portion 44 becomes the lower protruding portion. The displacement of the side wall portion 35 is regulated by abutting against the 45 pressing portions 32. Therefore, the load can be distributed and supported not only between the convex portion 31 and the concave portion 36 but also between the end portion of the side wall portion 35 and the presser portion 32, and the load is locally concentrated on the convex portion 31. This can be further prevented.

  Further, according to the electrical connecting device 1, the engaging surface 33 of the convex portion 31 is formed as a smooth curved surface 33c without forming an edge-shaped portion at the end portion of the inclined surface 33b. It is possible to prevent local loads from acting on the terminal portion in a concentrated manner.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, the shapes of the connecting housing element, the cable support portion, the convex portion, and the concave portion are not limited to those illustrated in the present embodiment, and may be widely modified as long as they are described in the claims. Further, in the present embodiment, a case has been described in which a concave portion is formed in the upper protruding portion and a convex portion is formed in the lower protruding portion. However, a convex portion is formed in the upper protruding portion and a lower protrusion is formed. A recess may be formed in the installation part.

  The electrical connection device of the present invention can be widely applied to an electrical connection device that is connected to a connected housing element that supports at least one connected terminal. For example, it can be used as various connectors used in automobiles, but is not limited to its application, and can be applied to a wider range of applications, and can be applied to many different environments and various purposes.

1 is a perspective view illustrating an electrical connection device according to an embodiment of the invention. It is a perspective view in the state which turned upside down the electrical connection apparatus shown in FIG. It is a top view which shows the state which fitted and connected the electrical connection apparatus shown in FIG. 1 to the to-be-connected housing element. It is a disassembled perspective view of the electrical connection apparatus shown in FIG. It is a perspective view which shows the state which fitted and connected to the to-be-connected housing element of the electrical connection apparatus shown in FIG. 1 with a notch cross section. It is sectional drawing which shows the state fitted and connected to the to-be-connected housing element of the electrical connection apparatus shown in FIG. It is a perspective view of the main body housing shown in FIG. FIG. 8 is a partially enlarged perspective view of the main body housing shown in FIG. 7. It is a perspective view of the cover housing shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a perspective view explaining the assembly process of the electrical connection apparatus shown in FIG. It is a figure which expands and shows the convex part vicinity of the lower side protrusion part shown in FIG. It is a schematic diagram shown for comparative description.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrical connection apparatus 2 Housing element 9 for connection
DESCRIPTION OF SYMBOLS 11 Connection terminal 12 Connection housing element 13 Cover housing 14 Main body housing 21 Cable support part 31 Projection part 36 Concave part 33 Engagement surface 33b Inclination surface 44 Upper protrusion part 45 Lower protrusion part

Claims (3)

An electrical connection device connected to a connected housing element supporting at least one connected terminal comprising:
At least one connection terminal electrically connected to the connected terminal;
A connection housing having a main body housing for supporting the connection terminal therein and a cover housing attached so as to be covered with the main body housing, and connected to the connected housing element by fitting. Elements and
A cable supporting portion that protrudes from the connection housing element and supports a cable that is arranged so that the connection terminal is attached to one end of the connection housing element and pulled out from the main body housing, and is formed on the cover housing. A cable supporting portion provided so that an upper protruding portion and a lower protruding portion formed in the main body housing sandwich the cable;
A convex portion provided on one of the upper protruding portion and the lower protruding portion;
A recess provided on the other of the upper protrusion and the lower protrusion to be engaged with the protrusion; and
When the convex portion and the concave portion engage with each other, the engagement surface of the convex portion that contacts the concave portion is inclined with respect to the direction in which the cable support portion protrudes at the connection housing element An inclined surface formed to be a surface,
An inclined surface formed so as to come into contact with the inclined surface of the convex portion in the engaging surface in the concave portion that comes into contact with the convex portion when the convex portion and the concave portion are engaged,
An electrical connection device comprising: The upper protruding portion is provided with a side wall portion disposed so as to cover a side portion of the lower protruding portion in a state where the convex portion and the concave portion are engaged.
The lower projecting portion projects laterally at the end of the lower projecting portion, and regulates the displacement of the side wall portion by contacting the end portion of the side wall portion. The electrical connection device according to claim 1, further comprising a pressing portion.   The curved surface formed so that the said engaging surface may adjoin the said inclined surface and may continue smoothly with respect to the said inclined surface is provided. Electrical connection device.

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