JP4628730B2 - Socket / plug assembly - Google Patents

Description

  The present invention relates to a socket / plug assembly comprising a socket and a plug inserted into and connected to the socket, and more particularly to a socket / plug assembly suitable for interconnecting adjacent articles.

  For example, there is known a connector that secures a socket to a wall and inserts and fixes a plug into the socket so that a required article such as a cover of a luminaire previously attached to the plug is attached to the wall. Yes. And in such a connection tool, it is set as the inclined surface which inclines radially inward as the rear surface of the front-end | tip head of a plug faces back so that the articles | goods to be connected may be reliably connected without backlash. There is a type in which a stator provided on a socket is pressed with an elastic force inward in the radial direction, thereby urging the plug forward (that is, pulling into the socket) (see Patent Document 1). ). However, in this type of connector, when an excessive pulling force is applied to the plug, the inclined surface of the plug acts to displace the stator radially outward, and the plug may come out of the socket. There is.

The applicant of the present application has filed a patent application regarding a socket / plug assembly provided with means for solving such a drawback (see Patent Document 2). That is, in the socket / plug assembly according to this application, the socket has a cylindrical socket body that receives the plug. A sleeve that is slidable in the length direction (axial direction) is provided on the outer peripheral surface of the socket. A tapered surface inclined in the axial direction is provided on the inner surface of the sleeve, and the tapered surface is engaged with a portion of the stator that extends outward from the outer peripheral surface of the socket body. Then, the sleeve is urged in the axial direction so that the tapered surface is pressed against the stator by a compression coil spring provided so as to surround the outer peripheral surface of the socket body. Gives the direction of elasticity. The taper surface is provided with a portion parallel to the axial direction at an intermediate portion in the axial direction, an excessive pulling force is applied to the plug, the stator is pressed outward in the radial direction, and the sleeve is Even when the sleeve is moved in the axial direction (in the opposite direction), when the portion parallel to the axial direction of the tapered surface of the sleeve is engaged with the stator, the force in the axial direction from the stator to the sleeve is applied. By not adding, the radially outward displacement of the stator is prevented, thereby preventing the plug from coming out of the socket.
JP 2001-182726 A Japanese Patent Application No. 2004-171883

In the socket / plug assembly as disclosed in Patent Document 2, a compression coil spring is set on the outer peripheral surface of the socket body, and it is desired not to be exposed to the outside in order to maintain the function of the coil spring. However, in this socket / plug assembly, by increasing the length of the sleeve in the axial direction, it is possible to cover the coil spring no matter where the sleeve is moved in the axial direction. I have to. For this reason, the length of the whole socket will be long.
In view of such a point, the present invention has an object to make the length of a socket as short as possible.

That is, the present invention
A socket / plug assembly comprising a socket and a plug inserted into and coupled to the socket;
Socket is
A cylindrical main body having a plug insertion opening into which a plug is inserted at one end and having a plug receiving hole extending in the axial direction from the opening toward the other end;
A stator for fixing the plug inserted into the plug receiving hole of the cylindrical body into the hole;
A fixed position for engaging and fixing the stator to the plug inserted into the plug receiving hole and slidably mounted on the outer peripheral surface of the cylindrical main body, and the stator is disengaged from the plug. A sleeve that is axially displaceable between a fixed release position that allows
A compression coil spring for biasing the sleeve to the fixed position;
With
The cylindrical main body has a small-diameter portion and a large-diameter portion sequentially provided on the outer peripheral surface from the one end side toward the other end side,
The sleeve includes a sliding portion that is slidable on the small diameter portion, and a cover portion that is larger in diameter than the sliding portion and extends toward the large diameter portion of the cylindrical body. ,
The compression coil spring is set around the small diameter portion of the cylindrical main body and between the large diameter portion of the cylindrical main body and the sliding portion of the sleeve, and urges the sleeve toward the fixed position,
The socket / plug assembly has a smaller diameter than the cover portion of the sleeve, and is set between the cover portion and the compression coil spring. A cylindrical spring cover extending a predetermined length
The cover portion of the sleeve is configured to be displaced in the axial direction in a state of being overlapped with the spring cover when the sleeve slides between the fixed position and the fixed release position. A plug assembly is provided.

  In the conventional socket / plug type fitting as described above, when the sleeve moves between the fixed position and the fixed release position, the cover portion of the sleeve is lengthened so that the compression coil spring is not exposed to the outside. Therefore, the length of the entire socket becomes long. However, in the socket / plug assembly according to the present invention, since the spring cover as described above is provided, the length of the sleeve is not increased. It becomes possible to shorten the length of itself.

Specifically, the spring cover has a flange portion extending inward in the radial direction so as to contact an end portion adjacent to the small diameter portion of the large diameter portion of the cylindrical main body, and the flange portion is connected to the end portion of the large diameter portion. It is located between the compression coil spring.
By doing so, the spring cover is held at a predetermined position on the sleeve.

More specifically,
The cylindrical body has a through hole extending in the radial direction, and the stator is provided in the through hole, and engages with a plug inserted into the plug receiving hole to fix the plug to the plug receiving hole. Is radially displaceable between a radially inner position that is away from the plug and a radially outer position that releases the plug from being fixed to the plug receiving hole;
The sleeve includes a first portion that engages with a stator located radially inward on the inner peripheral surface of the small-diameter portion, and an inclined portion whose diameter gradually increases from the first portion toward the biasing direction of the compression coil spring. And a second part that receives the stator at the radially outer position at a position away from the inclined part in the biasing direction, and is positioned between the first part and the second part, and is radially from the stator. A third portion for preventing the sleeve from generating a force in the direction opposite to the biasing direction even when receiving an outward force;
The plug has a head at the tip and a stator engaging recess for receiving the stator at the radially inner position, and the stator engaging recess gradually increases in diameter toward the rear following the end of the tip. The stator has a small inclined surface, and the stator received in the stator engaging recess is engaged with the inclined surface, and is pressed by a radially inwardly applied pressure from the stator to the inclined surface. The plug is preferably drawn into the plug receiving hole.

  Specifically, the third portion can be a surface extending in parallel with the axis of the sleeve.

More specifically,
Socket is further,
A stator holding position that is provided in the plug receiving hole and engages with the stator to hold the stator in the radially outer position; and is pushed into the plug receiving hole from the position to disengage from the stator; A stator support that is displaceable in an axial direction between a stator release position that allows the stator to be in the radially inner position;
A spring that is set behind the stator support in the plug receiving hole and biases the stator support toward the stator holding position,
The plug receiving hole has a small diameter part,
The stator support includes an annular groove on the outer peripheral surface, and a split ring-shaped stop ring is provided in the annular groove.
The stop ring is passed through the small diameter portion of the plug receiving hole with the diameter reduced in the annular groove, and in the expanded state, the stop ring is engaged with the small diameter portion of the plug receiving hole in the axial direction to fix the It is possible to prevent the child support from coming out of the plug receiving hole.

  In this case, the cylindrical main body has a closing portion integrally formed so as to close the plug receiving hole at the other end, and a connecting tool for a required article can be attached to the closing portion. preferable. That is, in order to set the stator holding member so that it does not come out of the plug receiving hole, after inserting the stator holding member from the opening on the other end side of the cylindrical body, the other end is closed with the closing member. Generally, it is attached by screw engagement, etc., but using the split ring-shaped stop ring, the stator holding member can be inserted from the plug insertion opening, and the other end opening is opened. By forming the closing closing member integrally with the cylindrical main body, there is no need to provide a screw portion for screw engagement, so that the entire length of the cylindrical main body can be shortened.

Furthermore, the present invention provides
A socket / plug assembly comprising a socket and a plug inserted into and coupled to the socket;
Socket is
A cylindrical main body having a plug insertion opening into which a plug is inserted at one end and having a plug receiving hole extending in the axial direction from the opening toward the other end;
A stator that engages with a plug inserted into the plug receiving hole of the cylindrical main body, and fixes the plug to the socket;
A fixed position for engaging and fixing the stator to the plug inserted into the plug receiving hole and slidably mounted on the outer peripheral surface of the cylindrical main body, and the stator is disengaged from the plug. A sleeve that is axially displaceable between a fixed release position that allows
A compression coil spring for biasing the sleeve toward the fixed position;
With
The cylindrical body has a through hole extending in the radial direction, and the stator is provided in the through hole, and engages with a plug inserted into the plug receiving hole to fix the plug to the plug receiving hole. Is radially displaceable between a radially inner position that is away from the plug and a radially outer position that releases the plug from being fixed to the plug receiving hole;
A socket is further provided in the plug receiving hole, and engages with the stator to hold the stator at the radially outer position, and the stator is pushed into the plug receiving hole from the position. A stator support that is displaceable in an axial direction between the stator release position and the stator release position allowing the stator to be in the radially inner position.
The sleeve includes a first portion that engages with a stator located radially inward on the inner peripheral surface of the small-diameter portion, and an inclined portion whose diameter gradually increases from the first portion toward the biasing direction of the compression coil spring. And a second portion that receives the stator located on the biasing direction side of the inclined portion and located at the radially outer position, and is positioned between the first portion and the second portion, and is radially from the stator. A third portion that prevents a force in the direction opposite to the biasing direction from being generated in the plug even when receiving an outward force;
The plug has a head at the tip and a stator engaging recess for receiving the stator at the radially inner position, and the stator engaging recess gradually increases in diameter toward the rear following the head at the tip. The stator has a small inclined surface, and the stator received in the stator engaging recess is engaged with the inclined surface, and is pressed by a radially inwardly applied pressure from the stator to the inclined surface. A socket / plug assembly is provided in which the plug is drawn into the plug receiving hole.

  Specifically, the third portion can be a surface extending parallel to the axis of the sleeve.

  In the present invention, by providing the spring cover, the length of the sleeve can be shortened, and the socket can be shortened. Also, the socket can be shortened by integrally forming a closing member for closing the other end opening of the cylindrical main body with the cylindrical member. Further, in the present invention, the stator is pressed to the radially inner position by the inclined surface provided on the inner peripheral surface of the sleeve. However, the stator is formed by a portion parallel to the axis of the socket provided on the inclined surface. By providing the third part, even if an excessive pulling force is applied to the plug from the socket and a radially outward force is applied to the stator, no axial force is applied from the stator to the socket. This can prevent the plug from coming out of the socket.

  1-4, an embodiment of a socket / plug assembly according to the present invention will be described. FIG. 1 shows an embodiment of a plug / socket assembly 10 and is a longitudinal sectional view showing a state where the socket and the plug are not connected. FIG. 2 is a longitudinal view showing a state where the socket and the plug of the plug / socket assembly 10 are connected. FIG. 3 is a longitudinal sectional view illustrating the state in which a pulling force is applied to the plug of the socket / plug assembly in the state of FIG. 2, and FIG. 4 is a longitudinal sectional view of the main part of the sleeve.

As shown in FIG. 1, the socket / plug assembly 10 includes a socket 12 and a plug 14 that is inserted into and connected to the socket.
The socket 12 includes a plug main body 26 having a plug insertion opening 22 into which the plug 14 is inserted at one end, a plug receiving hole 24 extending in the axial direction from the plug insertion opening 22 toward the other end, and the cylindrical main body. A stator 28 that engages with the plug 14 inserted into the plug receiving hole 24 and fixes the plug 14 to the socket 12, and is slidably mounted on the outer peripheral surface of the cylindrical body 26. A fixing position (FIG. 2) for engaging and fixing the stator 28 to the plug 14 inserted into the plug receiving hole 24, and a fixing release allowing the stator 28 to be disengaged from the plug 14. A sleeve 30 that is axially displaceable from the position (FIG. 1) and a compression coil spring 32 for urging the sleeve 30 toward the fixed position (FIG. 2) are provided.

  The cylindrical main body 26 has a small-diameter portion 34 and a large-diameter portion 36 that are sequentially provided from the end portion having the plug insertion opening 22 toward the other end side on the outer peripheral surface thereof. The sleeve 30 is slidable on the small-diameter portion 34, and has a larger diameter than the sliding portion 30-1 and extends toward the large-diameter portion 36 of the cylindrical body 26. The compression coil spring 32 is formed around the small diameter portion 34 of the cylindrical main body 26 and between the large diameter portion 36 of the cylindrical main body 26 and the sliding portion 30-1 of the sleeve 30. The sleeve 30 is urged toward the right as viewed in the figure.

  The socket / plug assembly 10 further has a smaller diameter than the cover portion 30-2 of the sleeve 30 and is set between the cover portion 30-2 and the compression coil spring 32, so that the large-diameter portion 36 side of the cylindrical main body 26 is disposed. A cylindrical spring cover 42 extending from the sleeve 30 toward the sliding portion 30-1 of the sleeve 30 by a predetermined length. The cover portion 30-2 has a fixed position (FIG. 2) and a fixed release position. When sliding between (FIG. 1) and the spring cover 42, it is displaced in the axial direction. In the illustrated example, the spring cover 42 has a flange portion 42-1 that extends inward in the radial direction so as to contact the end portion adjacent to the small diameter portion 34 of the large diameter portion 36 of the cylindrical main body 26, and the flange portion is large. It is sandwiched between the diameter portion 36 and the compression coil spring 32.

  The cylindrical main body 26 includes a closing portion 26-1 that closes the plug receiving hole 24, and a connecting portion 26-3 that extends from the closing portion 26-1 in the axial direction and is connected to a required member. The closing portion 26-1 and the connecting portion 26-3 are integrally formed with the cylindrical main body 26.

  The cylindrical main body 26 has a through-hole 44 extending in the radial direction, and the stator 28 is set in the through-hole 44, and a radially inner position (FIG. 2) that is engaged and fixed to the plug 14. , And can be displaced in the radial direction between the radially outer position (FIG. 1) disengaged from the plug 14. In the illustrated example, a stator support body 46 is provided in the plug receiving hole 24, and the stator support body 46 engages with the stator 28 as shown in FIG. And a stator release position that allows the stator 28 to be moved into the radial inner position (FIG. 2) by being pushed into the plug receiving hole 24 by the plug 14 and disengaged from the stator 28. It can be displaced in the axial direction between. A compression coil spring 48 is set in the back of the plug receiving hole 24 to urge the stator support 46 to the right as viewed in the figure.

  The plug receiving hole 24 has a small diameter portion (annular protrusion in the illustrated example) 24-1. On the other hand, the stator support 46 is provided with an annular groove 46-1 on the outer peripheral surface thereof, and a split ring-shaped stop ring 50 is provided in the annular groove 46-1, and the stop ring 50 is connected to the annular groove. The diameter of the plug receiving hole 24 is reduced and the diameter of the plug receiving hole 24 is passed through the small diameter portion 24-1, and the diameter of the plug receiving hole 24 is increased. The expanded stop ring 50 is engaged with the small diameter portion 24-1 of the plug receiving hole 24 in the axial direction to prevent the stator support 46 from coming out of the plug receiving hole 24. .

  FIG. 4 shows a stator engaging portion 30-3 formed on the inner peripheral surface of the sliding portion 30-1 in the sleeve 30. The stator engaging portion 30-3 engages and presses the stator 28 when the stator 28 is in the radially inner position (FIG. 2) where the stator 28 is engaged and fixed to the plug 14. 4 and a stator release portion 30-5 that engages the stator 28 when the stator 28 is in a radially outer position (FIG. 1) where the stator 28 is disengaged from the plug 14. The inclined surface 30-6 gradually increases in diameter from the portion 30-4 toward the stator releasing portion 30-5, and the inclined surface 30-6 is adjacent to the stator releasing portion 30-5. The sleeve stop portion 30-7 is provided so that the inclination becomes zero, that is, parallel to the axial direction.

  The plug 14 has a stator engaging groove 62 formed in the rear portion of the distal end head 60 thereof. When the plug 14 is inserted into the socket receiving hole 24 of the socket 12, the distal end head portion 60 engages with the stator support member 46 and is pushed into the plug receiving hole 24 to be removed from the stator 28 and received by the plug. It is advanced into the hole 24. When the stator engaging groove 62 is aligned with the stator 28 in the radial direction, the stator 28 is fitted into the stator engaging groove 62. Until then, the stator 30 on the inner peripheral surface of the sleeve 30 is engaged with the stator 28 supported at the radially outer position by the stator support member 46, and the unlocking position shown in FIG. It is said that. When the stator 28 is radially aligned with the stator engaging groove 62 of the plug 14, the sleeve 30 is displaced rightward as viewed in the figure by the urging force of the compression coil spring 32, and the sleeve 30 is moved to the inner peripheral surface thereof. When the inclined surface 30-6 displaces the stator 28 radially inward and the stator pressing portion 30-4 is in a position where it engages with the stator 28, the stator 28 enters the stator engaging groove 62. It will be in the state engaged by pressing. At this time, the stator 28 is engaged with the front inclined surface of the stator engaging groove 62, that is, the inclined surface 62-1 whose diameter is reduced rearward from the distal end head 60, thereby causing the plug 14 to move forward. Attract (to the left in the figure). By doing so, the tip end surface 26-2 of the cylindrical body 26 and the socket-side end surface 14-1 of the hexagonal portion provided on the plug 14 are brought into contact with each other as shown in the figure, and the socket 12 and the plug 14, or the articles A and B respectively connected to the socket 12 and the plug 14 are attracted to each other and collide with each other to ensure the connection between the articles. it can. In the illustrated example, the connecting portion 26-3 of the cylindrical body 26 of the socket 12 is formed with a male screw, and the plug 14 is also provided with a similar connecting portion 64.

  When the socket 12 and the plug 14 are connected as described above, if an excessive force is applied in the direction in which the plug 14 is pulled out from the socket 12, the front inclined surface 62-1 of the stator engaging groove 62 is fixed. The child 28 is pressed outward in the radial direction, and the stator 28 presses against the inclined surface 30-5 of the inner peripheral surface of the sleeve 30. For this reason, the sleeve 30 is displaced to the left as viewed in the figure, and there is a possibility that the stator 28 may be displaced to a radially outer position where the stator 28 is disengaged from the stator engaging groove 62. 5 is provided with a sleeve stop portion 30-6 provided in parallel to the axis of the sleeve 30, and when the sleeve 30 is displaced to a position where the sleeve stop portion 30-6 engages with the stator 28, The force from the stator 28 that displaces the sleeve 30 disappears, and the sleeve 30 stops at that position (FIG. 3).

  Although the embodiment of the socket / plug assembly 10 according to the present invention has been described above, the present invention is not limited to this. For example, the sleeve stop portion 30-6 formed on the inner peripheral surface of the sleeve 30 is not limited to one parallel to the sleeve axis, and may be a surface inclined in the opposite direction to the inclined surface 30-5, for example. Is possible. Further, when there is no stator support 46 and the plug 14 is not inserted, the stator 28 partially protrudes into the plug receiving hole 24 and is displaced radially outward as the plug 14 is inserted. It is also possible for the sleeve 30 to be displaced in the axial direction accordingly. The connecting portions 26-3 and 64 are not limited to those shown in the figure, and for example, an opening penetrating in the axial direction is provided at the center of the closing portion 26-1 of the cylindrical body 26 in the socket 12, and a fixing bolt is passed through the opening. It can also be fixed to an article.

It is a longitudinal cross-sectional view which shows embodiment of a plug / socket assembly and shows the state which the socket and the plug are not connected. FIG. 2 is a longitudinal sectional view showing a state in which a socket and a plug of the plug / socket assembly 10 of FIG. 1 are connected. FIG. 3 is a longitudinal sectional view showing a state in which a pulling force is applied to the plug of the socket / plug assembly in the state of FIG. 2. It is a longitudinal cross-sectional view of the principal part of a sleeve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plug / socket assembly 12 Socket 14 Plug 14-1 Socket side end surface 22 Plug insertion opening 24 Plug receiving hole 24-1 Small diameter part 26 Cylindrical main body 26-1 Closing part 26-2 End surface 26-3 Connection part 28 Stator 30 Sleeve 30-1 Sliding part 30-2 Cover part 30-3 Stator engaging part 30-4 Stator pressing part (first part)
30-5 Stator release part (second part)
30-6 Inclined surface (Inclined part)
30-7 Sleeve stop part (third part)
32 Compression coil spring 34 Small diameter portion 36 Large diameter portion 42 Spring cover 42-1 Flange portion 44 Through hole 46 Stator support 46-1 Annular groove 48 Compression coil spring 50 Stop ring 60 Tip head 62 Stator engagement groove 62-1 Inclination Surface 64 connecting part

Claims (5)

A socket / plug assembly comprising a socket and a plug inserted into and coupled to the socket;
Socket is
A cylindrical main body having a plug insertion opening into which a plug is inserted at one end and having a plug receiving hole extending in the axial direction from the opening toward the other end;
A stator that engages with a plug inserted into the plug receiving hole of the cylindrical main body, and fixes the plug to the socket;
A fixed position for engaging and fixing the stator to the plug inserted into the plug receiving hole and slidably mounted on the outer peripheral surface of the cylindrical main body, and the stator is disengaged from the plug. A sleeve that is axially displaceable between a fixed release position that allows
A compression coil spring for biasing the sleeve toward the fixed position;
With
The cylindrical main body has a small-diameter portion and a large-diameter portion sequentially provided on the outer peripheral surface from the one end side toward the other end side,
The sleeve includes a sliding portion that is slidable on the small diameter portion, and a cover portion that is larger in diameter than the sliding portion and extends toward the large diameter portion of the cylindrical body. ,
The compression coil spring is set around the small diameter portion of the cylindrical main body and between the large diameter portion of the cylindrical main body and the sliding portion of the sleeve, and urges the sleeve toward the fixed position,
The socket / plug assembly further has a smaller diameter than the cover portion of the sleeve and is set between the cover portion and the compression coil spring. In the small diameter portion of the cylindrical main body, the direction of the sliding portion of the sleeve from the large diameter portion side A cylindrical spring cover extending a predetermined length toward
The sleeve cover portion is adapted to be displaced in the axial direction in a state where the sleeve overlaps the spring cover when the sleeve slides between the fixed position and the fixed release position.
The cylindrical body has a through hole extending in the radial direction, and the stator is provided in the through hole, and engages with a plug inserted into the plug receiving hole to fix the plug to the plug receiving hole. Is radially displaceable between a radially inner position that is away from the plug and a radially outer position that releases the plug from being fixed to the plug receiving hole;
The sleeve includes a first portion that engages with a stator located radially inward on the inner peripheral surface of the small-diameter portion, and an inclined portion whose diameter gradually increases from the first portion toward the biasing direction of the compression coil spring. And a second part that receives the stator located on the biasing direction side of the inclined part and located at the radially outer position, and is positioned on the inclined part between the first part and the second part and fixed. A third portion that prevents the sleeve from generating a force in the direction opposite to the biasing direction even when receiving a force radially outward from the child;
The plug has a head at the tip and a stator engaging recess for receiving the stator at the radially inner position, and the stator engaging recess gradually increases in diameter toward the rear following the head at the tip. The stator has a small inclined surface, and the stator received in the stator engaging recess is engaged with the inclined surface, and is pressed by a radially inwardly applied pressure from the stator to the inclined surface. A socket / plug assembly characterized in that the plug is drawn into the plug receiving hole. 2. The socket / plug assembly according to claim 1 , wherein the third portion is a surface extending parallel to the axis of the sleeve. The spring cover has a portion extending inward in the radial direction so as to contact an end portion adjacent to the small diameter portion of the large diameter portion of the cylindrical main body, and the portion is between the end portion of the large diameter portion and the compression coil spring. 3. The socket / plug assembly according to claim 1 or 2 , characterized in that the socket / plug assembly is located in the socket. Socket is further,
Provided in the plug receiving hole, a stator holding position for holding the stator and engaged with the stator in the radial outward position from the pushed in the stator in the plug receiving hole than the stator holding position A stator support that is displaceable in an axial direction between a stator release position allowing the stator to be in the radially inner position, and
A spring that is set behind the stator support in the plug receiving hole and biases the stator support toward the stator holding position,
The plug receiving hole has a small diameter part,
The stator support includes an annular groove on the outer peripheral surface, and a split ring-shaped stop ring is provided in the annular groove.
The stop ring is passed through the small diameter portion of the plug receiving hole with the diameter reduced in the annular groove, and in the expanded state, the stop ring is engaged with the small diameter portion of the plug receiving hole in the axial direction to fix the The socket / plug assembly according to any one of claims 1 to 3 , wherein the child support is prevented from coming out of the plug receiving hole. The cylindrical main body has a closing part integrally formed so as to close the plug receiving hole at the other end, and a connecting tool for connecting the socket to a required article can be formed in the closing part. 5. A socket / plug assembly according to claims 1 to 4 , characterized in that

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