JP5473132B2 - Electrical connector with dust hood - Google Patents

Description

  The present invention relates to a micro-sized electrical connector used for a personal computer, a camera, a medical device, a measuring device, and the like, and in particular, accepts an insertion-side connector inserted into a receiving-side connector housed in a receptacle for dust prevention and touch prevention. The present invention relates to an electrical connector with a dustproof hood having a sealed structure for connecting a side connector and a plug-in side connector.

  Japanese Utility Model Laid-Open No. 5-61975 discloses a door by pivotally supporting a pair of opening and closing doors urged in a closing direction by a torsion spring in an opening of a housing accommodating a receiving connector, and inserting the insertion connector. An electrical connector with an opening / closing door is disclosed in which the opening / closing door is closed by the spring force of a torsion spring disposed on the opening / closing door shaft when the insertion side connector is pulled open.

  Japanese Patent Laid-Open No. 11-8005 discloses an opening portion of a receptacle that accommodates a receiving connector in an electrical connector that can be applied to high voltage and strong current that prevents an operator from accidentally touching a terminal in the connector. A pivot shaft is arranged on the pivot shaft, and a protrusion and an opening / closing door are pivotally supported on the pivot shaft, and the insertion guide portion is inserted into the receptacle connector inserted into the receptacle containing the receptacle connector and connected to the receptacle connector. When the insertion side connector is inserted into the receptacle, the engagement projection provided on the insertion side connector is engaged with the protrusion provided on the opening / closing door of the receiving side connector to open the opening / closing door. When the connector is turned and pulled out from the receptacle, it is opened / closed by the engagement between the engaging projection provided on the insertion connector and the protrusion provided on the open / close door of the receiving connector. The closing and opening engagement holes that engage with the engaging protrusions in the receptacle are provided with an engaging protrusion at the end of the opening and closing door to hold the opening and closing door in the open and closed states. An electrical connector with an opening / closing door provided with the above is disclosed.

Japanese Utility Model Publication No. 5-61975 JP-A-11-8005

  However, the electrical connector with an open / close door disclosed in Patent Document 1 is difficult to completely prevent the entry of dust or the like into the receptacle because the receptacle that accommodates the receiving connector is not completely sealed from the outside. It is. Further, since a spring means such as a torsion spring is required to urge the open / close door to the closed state, it is necessary to set the torsion spring while twisting the connector, which causes a problem that the assembling work becomes complicated. Furthermore, a spring material such as a torsion spring has a problem of fatigue deterioration as the use time and the number of uses increase.

  Since the electrical connector with an opening / closing door disclosed in Patent Document 2 does not use a spring for the opening / closing door, the problem of fatigue deterioration of the spring and the difficulty of assembly are solved. However, since the protrusion provided on the open / close door is exposed outside the receptacle, the structure is not completely sealed. In addition, in order to hold the open / close door in an open state and a closed state, it is necessary to provide an engagement protrusion at the end of the open / close door and to provide a close and open engagement hole in the receptacle that engages with the engagement protrusion. There is no structure for sealing the receptacle. In the first place, the electrical connector disclosed in Patent Document 2 is an electrical connector that can be applied to a high voltage and a strong current, and it is a problem to be solved to prevent an operator from accidentally touching a terminal in the connector. It is not considered to prevent the intrusion of dust and the like. In addition, since the connector pin is not sealed, the connector pin accommodated in the receptacle is exposed to the outside air, and there is a risk of occurrence of problems such as contact of the connector pin and heat generation due to contact failure due to contact.

  The present invention solves the above-mentioned problems of the prior art, has a sealed structure, prevents inadvertent opening of the door, and can keep the door closed stably without using a member such as a spring material. An object is to provide a hooded electrical connector.

  In order to solve the above problems, an electrical connector with a dust-proof hood according to the present invention includes a first connector having an opening at one end and a male terminal, and a female terminal inserted into the first connector and connected to the male terminal. And a dust-proof hood that has a male terminal insertion hole in which an elastic opening / closing lid that opens and closes when a male terminal is inserted and exited, and seals and seals the opening of the first connector. The dust hood is moved up and down in the connector by inserting and pulling out the second connector to and from the connector, and is engaged with and disengaged from the engaging portion formed in the first connector as the dust hood moves up and down. And an elastic lock portion that engages and disengages with the locking groove formed in the second connector at the tip of the dust hood, and the male terminal is moved to the male terminal of the dust hood by the vertical movement of the dust hood. Connection of the male and female terminals by opening and closing the elastic lid of entry apertures, characterized in that the disconnecting operation.

  The electrical connector with a dustproof hood of the present invention is characterized in that the dustproof hood having the elastic lock portion and the elastic opening / closing lid is formed by integral molding with an elastic member.

  Moreover, the electrical connector with a dust hood of the present invention is characterized in that the elastic lock portion is a bulging portion formed at the tip of the dust hood.

  The electrical connector with a dustproof hood according to the present invention includes at least one elastically deformable simple lock member having one end fixed to the first connector, and when the male and female terminals are not connected, the simple lock member serves as the dustproof hood. The dust-proof hood is fixed to the first connector by engaging with a lock groove formed on the outer periphery of the connector, and when the male and female terminals are connected, the simple lock member is engaged with the simple lock groove formed on the outer periphery of the second connector. Then, the second connector is fixed to the first connector.

  In the electrical connector with a dust hood according to the present invention, the cross-sectional shape of the first connector is rectangular or circular, and the cross-sectional shapes of the dust hood and the second connector are similar to the cross-sectional shape of the receptacle. And

A first connector having an opening at one end and having a male terminal; a second connector having a female terminal inserted into the first connector and connected to the male terminal; and an elastic opening / closing lid that opens and closes when the male terminal enters and exits And a dustproof hood that seals and seals the opening of the first connector, and the dust hood is connected to the connector by inserting and extracting the second connector from the first connector. Is moved up and down, and the vertical movement of the dust hood causes the engagement and disengagement with the engagement portion formed on the first connector and the engagement and disengagement with the locking groove formed on the second connector. An elastic lock part is formed at the tip of the dust hood, and the male terminal opens and closes the elastic opening / closing lid of the male terminal insertion hole of the dust hood by the vertical movement of the dust hood to connect and disconnect the male and female terminals. You The structure enables connection and disconnection of male and female terminals with a simple operation and keeps the sealed state, preventing corrosion of the terminal due to intrusion of dust and moisture and preventing accidents such as poor connection. It becomes possible.
With the configuration in which the dustproof hood having the elastic lock portion and the elastic opening / closing lid is formed by integral molding with the elastic member, it is possible to easily mold the portion having the feature of the elastic member as a function.
At least one elastically deformable simple lock member having one end fixed to the first connector is disposed, and when the male and female terminals are not connected, the simple lock member engages with a simple lock groove formed on the outer periphery of the dust hood, and the dust hood Is fixed to the first connector, and when the male and female terminals are connected, the simple lock member engages with the simple lock groove formed on the outer periphery of the second connector to fix the second connector to the first connector. It is possible to reliably hold the second connector and the dustproof hood at predetermined positions of the first connector at the time of connection and disconnection.
Provided is an electrical connector capable of dealing with a difference in cross-sectional shape by adopting a configuration in which the cross-sectional shape of the first connector is rectangular or circular and the cross-sectional shape of the dust hood and the second connector is similar to the cross-sectional shape of the first connector. It becomes possible.

FIG. 4 is a cross-sectional view of the first connector taken along line AA in FIG. 3. FIG. 4 is a cross-sectional view of the first connector taken along line BB in FIG. 3. It is a top view of the 1st connector. It is sectional drawing of a 1st connector. It is sectional drawing of a 1st connector. It is a top view of the 1st connector. It is a figure which shows a male terminal. It is a side view of the 2nd connector. It is a top view of the 2nd connector. It is a side view of the 2nd connector. It is a top view of the 2nd connector. (A) (b) It is a figure which shows the elastic opening-closing lid installed in a male terminal insertion hole. (A) (b) It is a figure which shows the elastic opening-closing lid installed in a male terminal insertion hole. (A) (b) It is a figure which shows the elastic opening-closing lid installed in a male terminal insertion hole. (A) (b) (c) (d) It is a figure which shows the insertion process to the 1st connector of a 2nd connector. (A) (b) (c) (d) It is a figure which shows the insertion process to the 1st connector of a 2nd connector.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view taken along a line AA in FIG. 3 of an embodiment of an electrical connector with a dustproof hood, FIG. 2 is a cross-sectional view taken along a line BB in FIG. FIG.

  The first connector 1 includes a receptacle having a rectangular cross section including a bottom wall portion 1d and four side wall portions 1a. A flange portion 1b extending at a right angle from the side wall portion 1a is formed at the front end opening portion of the receptacle so as to reduce the opening portion. The receptacle is formed of an insulating synthetic resin or the like. One or a plurality of male terminals 3 are arranged on the bottom wall 1 d of the receptacle of the first connector 1.

  In the receptacle, a spacer plate is installed on the inner wall of the side wall portion 1a so as to extend below the flange portion 1b. A notch having an inclined surface is formed in a part of the front end portion of the spacer plate, and an engaging recess 1e is formed in a lower portion of the flange portion 1b on one side wall side of the receptacle having a rectangular cross section. Further, the other side wall of the receptacle having a rectangular cross section has a portion where the spacer plate is not installed, and the lower end is fixed to the bottom wall portion 1d of the receptacle in the portion where the spacer plate is not installed, and the direction of the opening of the receptacle A simple lock member 6 extending in the direction is arranged. An engaging convex portion 6 a is formed at the tip of the simple lock member 6.

  A dustproof hood 5 for sealing and sealing the receptacle is disposed in the receptacle. The dust hood 5 is a member that is elastically deformed and formed by integral molding. The dustproof hood 5 includes a bottom wall portion 5a and four side wall portions, and has a rectangular cross section similar to the cross section of the receptacle. At the tip of one opposing side wall portion of the dust hood 5, an elastic lock portion 5 d bulging outward is formed at a position corresponding to the engagement recess 1 e formed in the receptacle. The elastic lock portion 5d of the dustproof hood 5 engages with an engagement recess 1e formed in the receptacle.

  A lock groove 5 e is formed on the other opposite side wall portion of the dust hood 5. The engaging projection 6 a at the tip of the simple lock member 6 whose lower end is fixed to the receptacle engages with the lock groove 5 e of the dust hood 5. When the male and female terminals are not connected, the dust-proof hood 5 has two engagement means: the engagement between the elastic lock portion 5d and the engagement recess 1e formed in the receptacle, and the engagement between the simple lock member 6 and the lock groove 5e. It is held by the first connector 1.

  A male terminal insertion hole 5b is formed in the bottom wall 5a of the dust hood 5 at a position corresponding to the male terminal 3 installed on the bottom wall 1d of the receptacle. The male terminal insertion hole 5b is formed with an elastic opening / closing lid 5c that is opened by the insertion of the male terminal 3 and is normally kept closed. When the male and female terminals are not connected, the tip of the male terminal 3 is positioned below the elastic opening / closing lid 5 c, the elastic opening / closing lid 5 is held in a closed state, and the first connector 1 is sealed by the dust-proof hood 5. .

  FIG. 4 is a cross-sectional view of another embodiment of an electrical connector with a dustproof hood, and FIG. 5 is a cross-sectional view of a cutting line whose phase is changed with respect to the cutting line of the cross-sectional view of FIG. FIG. 6 is a plan view.

  The first connector 1 is provided with a receptacle having a circular cross section including a bottom wall portion 1d and a side wall portion 1a. A flange portion 1b extending at a right angle from the side wall portion 1a is formed at the front end opening portion of the receptacle so as to reduce the opening portion. The receptacle is formed of an insulating synthetic resin or the like. One or a plurality of male terminals 3 are arranged on the bottom wall 1 d of the receptacle of the first connector 1.

  In the receptacle, a spacer plate is installed on the inner wall of the side wall portion 1a so as to extend below the flange portion 1b. A notch having an inclined surface is formed in a part of the front end portion of the spacer plate, and an engaging recess 1e is formed in the lower portion of the flange portion 1b of the receptacle having a circular cross section. Further, a simple lock member 6 having a portion where the spacer plate is not installed inside the receptacle having a circular cross section, the lower end being fixed to the bottom wall portion 1d of the receptacle in the portion where the spacer plate is not installed, and extending toward the opening of the receptacle is provided. Be placed. An engaging convex portion 6 a is formed at the tip of the simple lock member 6.

  A dustproof hood 5 for sealing and sealing the receptacle is disposed in the receptacle. The dust hood 5 is a member that is elastically deformed and formed by integral molding. The dust hood 6 includes a bottom wall portion 5a and a side wall portion, and is formed in a circular cross section similar to the cross section of the receptacle. At the tip of the side wall portion of the dust hood 5, an elastic lock portion 5 d bulging outward is formed at a position corresponding to the engagement recess 1 e formed in the receptacle. The elastic lock portion 5d of the dustproof hood 5 engages with an engagement recess 1e formed in the receptacle.

  A simple lock groove 5 e is formed on the side wall portion of the dust hood 5. The engaging projection 6 a at the tip of the simple lock member 6 whose lower end is fixed to the receptacle engages with the lock groove 5 e of the dust hood 5. When the male and female terminals are not connected, the dust-proof hood 5 has two engagement means: the engagement between the elastic lock portion 5d and the engagement recess 1e formed in the receptacle, and the engagement between the simple lock member 6 and the lock groove 5e. It is held by the first connector 1.

  A male terminal insertion hole 5b is formed in the bottom wall 5a of the dust hood 5 at a position corresponding to the male terminal 3 installed on the bottom wall 1d of the receptacle. The male terminal insertion hole 5b is formed with an elastic opening / closing lid 5c that is opened by the insertion of the male terminal 3 and is normally kept closed. When the male and female terminals are not connected, the tip of the male terminal 3 is positioned below the elastic opening / closing lid 5 c, the elastic opening / closing lid 5 is held in a closed state, and the first connector 1 is sealed by a dustproof hood 5. The

  FIG. 7 is a side view showing an embodiment of the male terminal 3. The male terminal 3 may have any shape as long as it has an outer diameter that can be inserted into the male terminal insertion hole 5 b of the dust-proof hood 5.

  8 and 9 are a side view and a plan view of the second connector 2 inserted into the first connector 1 of the embodiment shown in FIGS.

  The second connector 2 of this embodiment includes an insertion portion 2a having a rectangular cross section that is similar to the rectangular cross section opening shown in FIGS. The second connector 2 is provided with a plurality of female terminals 4. An engaging groove 2b that engages with the elastic lock portion 5d of the dustproof hood 5 is formed in one opposing side wall portion of the insertion portion 2a having a rectangular cross section. Moreover, the simple lock groove 2c which the engagement convex part 6a of the simple lock member 6 front-end | tip engages is formed in the other opposing side wall part of the insertion part 2a of a rectangular cross section. The formation position of the engagement groove 2b is located closer to the distal end side of the insertion portion 2a than the formation position of the simple lock groove 2c.

  FIGS. 10 and 11 are a side view and a plan view of the second connector 2 inserted into the first connector 1 of the embodiment shown in FIGS.

  The second connector 2 of this embodiment includes a plug portion 2a having a circular cross section that is similar to the circular cross section opening shown in FIGS. The second connector 2 is provided with a plurality of female terminals 4. An engagement groove 2b that engages with the elastic lock portion 5d of the dustproof hood 5 is formed on the side wall portion of the insertion portion 2a having a circular cross section. In addition, a simple lock groove 2c is formed in the side wall portion of the insertion portion 2a having a circular cross section to engage the engagement convex portion 6a at the tip of the simple lock member 6. The formation position of the engagement groove 2b is located closer to the distal end side of the insertion portion 2a than the formation position of the simple lock groove 2c.

  12, 13, and 14 are views showing an embodiment of the elastic opening / closing lid 5 c formed in the male terminal insertion hole 5 b of the dust-proof hood 5.

  12 (a) and 12 (b) show a thin elastic member at the outlet portion of the male terminal insertion hole 5b having a circular cross section of the dustproof hood 5 integrally formed with the elastic member, and four elastic members in the outlet portion in the radial direction. An embodiment in which the elastic opening / closing lid 5c is formed by dividing the lid member into eight lid members along the cut line. 13 (a) and 13 (b) show a thin elastic member at the outlet portion of the male terminal insertion hole 5b having a circular cross section of the dustproof hood 5 formed integrally with the elastic member, and three elastic members in the outlet portion in the radial direction. An embodiment in which the elastic opening / closing lid 5c is formed by dividing the lid member into six lid members along the cut line. 14 (a) and 14 (b) show a thin elastic member at the outlet portion of the male terminal insertion hole 5b having a circular cross section of the dustproof hood 5 formed integrally with the elastic member, and one elastic member at the outlet portion in the radial direction. An embodiment in which the elastic opening / closing lid 5c is formed by dividing the lid member into two lid members by a cut line. The number of lid members to be divided may be 6 to 8 when the outer diameter of the male terminal 3 is large, and may be two when the outer diameter is small.

  FIGS. 15A, 15B, 15C, 16D, and 16A, 16B, 16C, and 16D are views showing a process of inserting the second connector 2 into the first connector 1. FIGS.

  The insertion portion 2a of the second connector 2 is formed by two engagement means: an engagement between the elastic lock portion 5d and the engagement recess 1e formed in the receptacle, and an engagement between the simple lock member 6 and the lock groove 5e. It is held in the connector 1 and inserted into the dustproof hood 5. FIG. 15A and FIG. 16A show a state before the insertion portion 2 a of the second connector 2 is inserted into the dust hood 5.

  FIG. 15B and FIG. 16B show a state where the insertion portion 2 a of the second connector 2 is being inserted into the dust-proof hood 5. In this state, since the tip of the insertion portion 2a of the second connector 2 is not in a state of pressing the bottom surface 5a of the dust hood, the dust hood 5 includes the elastic locking portion 5d and the engagement recess 1e formed in the receptacle. And the engagement between the simple lock member 6 and the lock groove 5e and the two engagement means are fixed to the first connector 1.

  FIG. 15C and FIG. 16C show a state in which the insertion portion 2a of the second connector 2 is in contact with the bottom surface 5a of the dust hood 5 and pressing on the dust hood 5 is started. When the dust hood 5 is pressed, the engagement between the simple lock member 6 and the lock groove 5e is released. At substantially the same time, the engagement between the elastic lock portion 5d and the engagement recess 1e formed in the receptacle is released, and the dustproof hood 5 starts to descend in the receptacle. When the dust-proof hood 5 is lowered in the receptacle, the outer periphery of the dust-proof hood 5 is lowered while being in contact with the spacer plate installed in the receptacle. The elastic lock portion 5d bulging outside the tip of the dustproof hood 5 disengaged from the engagement recess 1e is formed in the insertion portion 2a of the second connector while being compressed by the spacer plate and elastically deformed inward. The dust hood 5 and the second connector 2 are kept in a fixed state and are moved down in the receptacle.

  When the dustproof hood 5 is lowered in the receptacle, the male terminal 3 rises in the relative position of the male terminal insertion hole 5b of the dustproof hood 5 and protrudes from the bottom surface 5a of the dustproof hood 5 by opening the elastic opening / closing lid 5c. Connection to the female terminal 4 installed in 2 is started.

  FIGS. 15 (d) and 16 (d) show a state in which the lowering of the insertion portion 2 a of the second connector 2 within the receptacle of the dust-proof hood 5 is completed and the connection between the male terminal 3 and the female terminal 4 is completed. In the state where the connection between the male terminal 3 and the female terminal 4 is completed, the bottom surface of the dust hood 5 reaches the bottom surface of the receptacle, and the simple engagement member 6a of the simple lock member 6 is formed on the insertion portion 2a of the second connector 2. Engages with the lock groove 2c. That is, when the male terminal 3 and the female terminal 4 are connected, the second connector 2 and the dust-proof hood 5 are fixed by the engagement of the elastic lock portion 5d and the engagement groove 2b, and the simple lock member 6 and the second connector 2 are connected. By engaging with the simple lock groove 2c, the second connector 2 is fixed to the first connector 1, and the connection state between the male terminal 3 and the female terminal 4 can be stably secured.

  The steps of pulling out the second connector 2 from the first connector 1 and releasing the connection between the male terminal 3 and the female terminal 4 are shown in FIGS. 15 (a), (b), (c), (d), and FIGS. (C) It is carried out by a process reverse to the process shown in (d). First, the simple lock member 6 and the simple lock groove 2c of the second connector 2 are disengaged by the pulling-out operation of the insertion portion 2a of the second connector 2. Since the engagement between the engaging groove 2b of the insertion portion 2a of the second connector 2 and the elastic lock portion 5d of the dust hood 5 is maintained, the second connector 2 and the dust hood 5 rise together in the receptacle. When the elastic lock portion 5d of the dust hood 5 reaches the position of the engagement recess 1e formed in the receptacle, the engagement between the elastic lock portion 5d and the engagement groove 2b formed in the insertion portion 2a is released, and the dust hood 5 The elastic locking portion 5d engages with the engaging recess 1e formed in the receptacle. At the same time, the simple lock member 6 and the lock groove 5e of the dust hood 5 are engaged, and the dust hood 5 is fixed to the receptacle. The second connector 2 is pulled out of the receptacle, the male and female terminals are disconnected, the elastic opening / closing lid 5c of the dust hood 5 is closed, and the first connector 1 is sealed by the dust hood 5.

  As described above, according to the electric connector with a dust-proof hood of the present invention, the male and female terminals can be connected and disconnected with a simple operation, and the sealed state can be maintained. It is possible to prevent corrosion and prevent accidents such as poor connections.

  1: 1st connector, 1a: side wall portion 1b: flange portion, 1d: bottom wall portion 1e: engagement recess, 2: second connector, 2a: insertion portion, 2b: engagement groove, 2c: simple engagement groove, 3: male terminal, 4: female terminal, 5: dust hood, 5a: bottom wall portion, 5b: male terminal insertion hole, 5c: elastic opening / closing lid, 5d: elastic lock portion, 5e: lock groove, 6: simple lock member , 6a: engaging projection

Claims (5)

A first connector having an opening at one end and a male terminal;
A second connector installed with a female terminal inserted into the first connector and connected to the male terminal;
A dust-proof hood having a male terminal insertion hole in which an elastic opening / closing lid that opens and closes by the entry / exit of the male terminal is disposed and seals and seals the opening of the first connector;
With
The dust hood is moved up and down in the connector by inserting and pulling out the second connector to and from the first connector, and is engaged with an engagement portion formed in the first connector as the dust hood moves up and down. Forming an elastic lock part to be disengaged and engaged with and disengaged from the locking groove formed in the second connector at the tip of the dustproof hood,
An electrical connector with a dustproof hood, wherein the male terminal performs an operation of connecting and disconnecting the male and female terminals by opening and closing an elastic opening / closing lid of a male terminal insertion hole of the dustproof hood by the vertical movement of the dustproof hood.   The electrical connector with a dustproof hood according to claim 1, wherein the dustproof hood having the elastic lock portion and the elastic opening / closing lid is integrally formed of an elastic member.   The electrical connector with a dustproof hood according to claim 1 or 2, wherein the elastic lock portion is a bulging portion formed at a tip of the dustproof hood.   At least one elastically deformable simple lock member having one end fixed to the first connector is disposed, and when the male and female terminals are not connected, the simple lock member engages with a lock groove formed on the outer periphery of the dust hood. The dust hood is fixed to the first connector, and when the male and female terminals are connected, the simple lock member engages with a simple lock groove formed on the outer periphery of the second connector, and the second connector is attached to the first connector. The electric connector with a dustproof hood according to any one of claims 1 to 3, wherein the electric connector is fixed.   The cross-sectional shape of the first connector is rectangular or circular, and the cross-sectional shapes of the dust hood and the second connector are similar to the cross-sectional shape of the first connector. An electrical connector with a dust-proof hood as described in item 1.

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