JP2018181817A - Waterproof receptacle connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof receptacle connector capable of easily fixing a waterproof packing.SOLUTION: A waterproof receptacle connector comprises: a contact electrically connected to a connection target; a main body holding the contact; a cylindrical shell 23 which is outer-periphery fitted to the main body; a cylindrical waterproof packing 30 arranged on an outer peripheral side of the shell 23; and a housing 10 that is outer-periphery fitted to the cylindrical waterproof packing 30, and includes a cylindrical fitting part 12 to which a mating plug connector is fitted. The main body and the shell 23 are fixed to the housing 10, and a part of the main body and the shell 23 is arranged to the fitting part 12. An engagement part 26 is provided to one of an outer peripheral surface 27a of the shell 23 and an inner peripheral surface 32a of the packing 30, and an engaged part 33 engaged to the other engagement part 26 is provided.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a waterproof receptacle connector fitted and connected to a plug connector.

  In order to ensure the waterproof performance, the waterproof receptacle connector is usually configured by arranging a ring-shaped packing at the fitting portion of the connector. In the technique described in Patent Document 1, in the connector housing, a plurality of radial through holes are formed in the cylindrical fitting portion, and the outer peripheral surface of the ring-like packing is integrally formed with the through holes of the fitting portion. An arrangement is shown in which the part is formed by injection molding. The ring-shaped packing may be formed by forming a projecting portion on the outer peripheral side in advance, and then the projecting portion may be fitted and fixed to the through hole of the cylindrical fitting portion.

  Patent Document 2 discloses a connector in which a protrusion that protrudes in the radial direction is provided inside the fitting portion of the housing, and a stepped portion that the protrusion engages with the waterproof packing is provided. By inserting the waterproof packing into the fitting portion of the housing, the projection of the fitting portion is locked to the step portion of the waterproof packing. Thereby, the waterproof packing is fixed to the housing.

Japanese Patent Application Laid-Open No. 5-47436 Japanese Utility Model Application Publication No. 3-40775

  In the configuration of Patent Document 1, it is necessary to injection-mold the packing for the connector housing using a mold. For this reason, the packing can not be easily fixed to the housing. Moreover, since it is necessary to provide a through-hole in a fitting part, the metal mold | die for housings becomes complicated. In the case where the protrusion is provided in advance on the outer peripheral side of the packing, attachment of the packing to the through hole of the housing is facilitated. However, when the mating connector is pulled out of the waterproof receptacle connector, the packing may be pulled together, in which case the projection may be detached from the through hole of the housing and the packing may be twisted.

  In the configuration of Patent Document 2, a protrusion that is engaged with the step portion of the packing is formed inside the fitting portion of the housing. In order to form a projection in the inside of the fitting portion, a mold for the projection is separately required, so the number of molds for molding the housing is increased. Also, the mold for the projection can not be easily extracted from the fitting portion of the housing after molding. For this reason, the mold for protrusions is made to be dividable, and as shown in Patent Document 2, the housing is provided with a mold removal hole for removing the mold for protrusions. As described above, in the configuration in which the through hole and the protrusion are provided in the housing in order to fix the packing, the processing for providing the portion for fixing the packing in the waterproof receptacle connector is not easy and there is room for improvement.

  In view of the above situation, a waterproof receptacle connector capable of easily fixing a waterproof packing is desired.

  The characteristic configuration of the waterproof receptacle connector according to the present invention includes a contact electrically connected to an object to be connected, a main body holding the contact, a cylindrical shell externally fitted to the main body, and an outer peripheral side of the shell And a housing having a cylindrical fitting portion which is externally fitted to the waterproof packing and into which the mating plug connector is fitted, and the main body and the shell are mounted on the housing. While being fixed, the main body and a part of the shell are disposed in the fitting portion, and an engaging portion is provided on one of the outer peripheral surface of the shell and the inner peripheral surface of the waterproof packing, In the present embodiment, an engaged portion to be engaged with the engaging portion is provided.

  According to this configuration, the cylindrical waterproof packing is disposed on the outer peripheral side of the cylindrical shell externally fitted to the main body, and provided on one of the outer peripheral surface of the shell and the inner peripheral surface of the waterproof packing. The prevention packing is fixed to the shell by the engagement between the engaging portion and the engaged portion provided on the other. Since the outer peripheral surface of the shell is a portion that is easy to process, the shell can be easily provided with the engaging portion (or the engaged portion). The engaging portion (or the engaged portion) can be disposed at any position on the outer periphery of the cylindrical shell. In addition, the shell and the waterproof packing can also be provided with the engaging portion and the engaged portion over the entire circumference, not a part of the circumference. In addition, since the shell has the engaging portion (engaged portion) engaged with the waterproof packing, a special shape for fixing the waterproof packing to the housing is not necessary. That is, the waterproof receptacle connector can easily fix the waterproof packing using a member that is easy to process.

  Another characteristic configuration of the present invention is that the engaging portion is a convex portion formed to project radially outward of the shell or radially inward of the waterproof packing, and the engaged portion is the waterproof It is a recess that is formed radially outward from the inner circumferential surface of the packing, or recedes radially inward from the outer circumferential surface of the shell, and holds the convex portion.

  According to this configuration, the engaging portion is a convex portion formed to project outward in the radial direction of the shell, and the recessed portion is formed by retracting the engaged portion radially outward from the inner peripheral surface of the waterproof packing It is. On the contrary, the engaging portion may be a convex portion formed to project radially inward of the waterproof packing, and the engaged portion may be a recessed portion formed by retracting radially inward from the outer peripheral surface of the shell. A waterproof packing can be reliably fixed to a shell by such convex part and a recessed part engaging and a convex part being hold | maintained at a recessed part. In addition, since the shapes of the convex portion and the concave portion are simple, the convex portion and the concave portion as the engaging portion and the engaged portion can be easily provided on the shell and the waterproof packing.

  Another feature of the present invention is that the engaging portion and the engaged portion are formed so as to protrude radially inward of the waterproof packing and a first convex portion which is formed projecting outward in the radial direction of the shell. It is in the point comprised by the 2nd convex part latched by the 1st convex part.

  According to this configuration, the engaging portion and the engaged portion are the first convex portion that is formed so as to protrude outward in the radial direction of the shell and the second convex portion that is formed so as to protrude inward the radial direction of the waterproof packing. The waterproof packing can be reliably fixed to the fitting portion of the housing by engaging the first convex portion and the second convex portion. Further, since the convex portion has a simple shape, the convex portion as the engaging portion and the engaged portion can be easily provided on the outer peripheral surface of the shell and the inner peripheral surface of the waterproof packing.

  Another feature of the present invention is that, in the radial direction of the shell, the radial distance between the inner surface of the housing and the waterproof packing at the position where the engaging portion and the engaged portion are engaged. It is in the point set so that it may become shorter than the length of the engagement area | region which the said engaging part and the said to-be-engaged part engage.

  If the shell and the protective packing are in the engaged state, the waterproof packing is held by the shell even if the outer peripheral surface of the waterproof packing corresponding to the position engaged with the shell is separated from the inner surface of the housing . However, in this case, when the mating plug connector in the connected state inside the waterproof packing is pulled out from the waterproof receptacle connector, the waterproof packing is pulled in the same direction as the plug connector and the waterproof packing is expanded radially outward. In the worst case, the waterproof packing may come out of engagement with the shell and be disengaged.

  Therefore, in the present configuration, the radial distance between the inner surface of the housing and the waterproof packing at the position where the engaging portion and the engaged portion engage is the engaging portion and the engaged portion in the radial direction of the shell. And is set to be shorter than the length of the engagement region in which the lower and the lower gear engage. With this setting, even if the waterproof packing is pulled and the waterproof packing is expanded radially outward, the engagement area between the shell and the waterproof packing is secured, so the waterproof packing never comes off from the shell The shell can hold the waterproof packing stably.

It is a side cross section of the waterproof receptacle connector of a 1st embodiment. It is a perspective view of the waterproof receptacle connector of a 1st embodiment. It is a disassembled perspective view of the waterproof receptacle connector of 1st Embodiment. It is a principal part enlarged view of the waterproof receptacle connector of FIG. It is a principal part enlarged view of the waterproof receptacle connector of 2nd Embodiment. It is a principal part enlarged view of the waterproof receptacle connector of 3rd Embodiment. It is a principal part enlarged view of the waterproof receptacle connector of 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

First Embodiment
As shown in FIGS. 1 to 3, the waterproof receptacle connector 100 includes a housing 10, a connector 20, and a waterproof packing (hereinafter, referred to as packing) 30.

  The housing 10 includes a box-shaped base portion 11 and a tubular fitting portion 12. The base portion 11 has a side wall portion 13 and an upper surface portion 14. The fitting portion 12 is provided on the upper surface portion 14 so as to penetrate the upper surface portion 14. The mating plug connector 110 shown in FIG. 2 is fitted into the fitting portion 12. The fitting portion 12 has a plurality of slits 12a and engagement holes 12b in the circumferential direction corresponding to the shape of the plug housing 111 of the mating plug connector 110 (in FIG. 2, five slits 12a and two engagement holes 12b). One) is provided.

  The connector 20 includes a contact 21 electrically connected to a connection target, and a main body 22. The contact 21 is held by a main body 22 made of an insulator or the like. One end of the contact 21 protrudes from the upper surface of the main body 22, and the other end protrudes from the lower surface of the main body 22. The main body 22 is externally fitted by a cylindrical shell 23. The shell 23 includes a first cylindrical portion 24 on which the main body 22 is fitted, and a second cylindrical portion 25 covering the periphery of the contact 21. In the present embodiment, the diameter of the first cylindrical portion 24 is larger than the diameter of the second cylindrical portion 25. Depending on the shape of the main body 22, the diameter of the first cylindrical portion 24 and the diameter of the second cylindrical portion 25 may be the same.

  The connector 20 and the shell 23 are accommodated inside the base portion 11 and the fitting portion 12 and fixed to the inside of the base portion 11 of the housing 10. The connector 20 including the main body 22 and the shell 23 are mostly accommodated in the base portion 11 and arranged such that one end of the contact 21 is positioned in the fitting portion 12 and the other end of the contact 21 is the back surface of the base portion 11 It is arranged to protrude from the

  The packing 30 is formed in a cylindrical shape and disposed on the outer peripheral side of the shell 23. The packing 30 includes a first cylindrical portion 31 provided on the opening side of the fitting portion 12 and a second cylindrical portion 32 provided on the back side of the fitting portion 12. In the first cylindrical portion 31, the inner peripheral surface 31a and the outer peripheral surface 31b are uneven.

  When the plug housing 111 of the mating plug connector 110 is fitted in the fitting portion 12, the plug housing 111 abuts on the inner peripheral surface 31a of the packing 30, and the outer peripheral surface 31b of the packing 30 is pressed against the inner surface 10a of the housing 10. Be done. Thereby, the space between the inner surface 10 a of the housing 10 and the outer peripheral surface of the plug housing 111 is sealed by the packing 30. As a result, in the waterproof receptacle connector 100, the waterproof function by the packing 30 is exhibited.

  As shown in FIG. 4, the engaging portion 26 is provided on the outer peripheral surface of the shell 23, and the engaged portion 33 that engages with the engaging portion 26 is provided on the inner peripheral surface of the packing 30. The engaging portion 26 is provided at the upper end of the first cylindrical portion 24 of the shell 23, and a base 27 erected at the upper end of the first cylindrical portion 24, and an engagement protruding in the radial direction of the shell 23 And a claw portion 28. The base 27 and the locking claws 28 are provided on the entire outer peripheral surface of the shell 23.

  The engaged portion 33 is provided in the second cylindrical portion 32 of the packing 30. In the present embodiment, the engaged portion 33 is configured by the recess 34 and the second locking claw 35. The recess 34 is formed to be retracted outward in the radial direction of the shell 23 at the upper portion of the second cylindrical portion 32. The second locking claw portion 35 is formed to project radially inward of the recess 34 at the lower portion of the second cylindrical portion 32. The recess 34 and the second locking claw 35 are provided over the entire circumference of the inner peripheral surface of the second cylindrical portion 32.

  The packing 30 is fixed to the shell 23 and the fitting portion 12 as the engaging portion 26 and the engaged portion 33 engage after being inserted into the fitting portion 12. An inclined surface 28 a is provided on the outer peripheral side of the locking claw portion 28 so as to protrude radially outward of the shell 23 as it approaches the base portion 11, and on the inner peripheral side of the second locking claw portion 35, the base portion An inclined surface 35 a is provided which recedes radially outward of the shell 23 as 11 is approached. The packing 30 is guided toward the base portion 11 while being diameter-expanded by the inclined surface 35 a abutting on the inclined surface 28 a of the shell 23, and thereafter, the engaging portion 26 and the engaged portion 33 are engaged. Specifically, when the second locking claw portion 35 of the packing 30 rides over the locking claw portion 28 of the shell 23, the locking claw portion 28 is formed on the locking surface 35 c provided on the second locking claw portion 35. Is locked into engagement. At this time, the outer peripheral surface 27a of the engaging portion 26 and the inner peripheral surface 32a of the second cylindrical portion 32 (engaged portion 33) abut on each other. At the same time, the locking claws 28 of the shell 23 are engaged with and held by the recesses 34 of the packing 30.

  Thus, the packing 30 can be stably held on the shell 23 by the engagement of the engaging portion 26 provided on the outer peripheral surface of the shell 23 and the engaged portion 33 provided on the inner peripheral surface of the packing 30. It is fixed to The outer peripheral surface of the shell 23 is a portion that is easier to process than the inner peripheral surface, so the engaging portion 26 can be easily provided on the shell 23. Further, by providing the engaging portion 26 that engages the packing 30 with the shell 23, a special shape for fixing the packing 30 to the housing 10 becomes unnecessary. That is, the waterproof receptacle connector 100 can easily fix the packing 30 using a member that is easy to process.

Second Embodiment
In the present embodiment, as shown in FIG. 5, a locking claw 28 (an example of a first convex portion) is provided on the outer peripheral side of the shell 23 as the engaging part 26, and an inner peripheral side of the packing 30 is covered. A second locking claw portion 35 (an example of a second convex portion) is provided as the engaging portion 33. That is, in the present embodiment, unlike the first embodiment, the recess as the engaged portion is not provided on the inner peripheral side of the packing 30. Thus, the structure of the to-be-engaged part 33 can be simplified by comprising only the 2nd latching claw part 35 which is the to-be-engaged part 33 which is a convex part.

Third Embodiment
In the present embodiment, as shown in FIG. 6, on the outer peripheral side of the shell 23, a base 41 and a projection 42 protruding in the radial direction are provided as the engagement portion 26. On the other hand, on the inner peripheral side of the packing 30, a recessed portion 43 which is formed as a to-be-engaged portion 33 so as to be retracted in the radial direction and which holds the convex portion 42 is provided. In order to facilitate the engagement with the recess 43, the protrusion 42 has an outer circumferential surface 42a formed in an R shape.

Fourth Embodiment
In the present embodiment, the packing 30 is disposed in a state where the outer peripheral surface 32 b of the second cylindrical portion 32 is separated from the inner surface 10 a of the housing 10. In the state where the packing 30 is engaged with the shell 23, the packing 30 is held by the shell 23. However, in this case, when the mating plug connector 110 in the connected state is pulled out from the waterproof receptacle connector 100, the packing 30 may be pulled outward and the packing 30 may be expanded radially outward. There is a possibility of disengaging from the engagement with the

  Therefore, in the present embodiment, the distance L1 between the inner surface 10a of the housing 10 and the outer peripheral surface 32b of the packing 30 at the position where the engaging portion 26 and the engaged portion 33 engage (region T in FIG. 7) is It is set to be shorter than the distance L2 of the engagement region E in which the engaging portion 26 and the engaged portion 33 engage in the radial direction of the shell 23. With this setting, even if the packing 30 is pulled outward and the packing 30 is expanded radially outward, the packing 30 is expanded only to the distance L1, and the engagement area E between the shell 23 and the packing 30 is secured. As a result, the packing 30 can be stably held by the shell 23.

Other Embodiments
(1) In the above embodiment, an example is shown in which the locking claw portion 28 (convex portion 42) is provided as the engaging portion 26 in the shell 23, and the concave portion 34 (concave portion 43) is provided as the engaged portion 33 in the packing 30. However, the shell 23 may be provided with an engaged portion, and the packing 30 may be provided with an engaging portion. That is, a convex portion as an engaging portion may be provided on the inner peripheral side of the packing 30, and a concave portion as an engaged portion may be provided on the outer peripheral side of the shell 23.

(2) In the above embodiment, the outer peripheral surface of the shell 23 and the inner peripheral surface of the packing 30 have the engaging portion 26 and the engaged portion 33 along the entire circumference. Instead of this, the engaging portion 26 and the engaged portion 33 may be provided on part of the entire circumference of the shell 23 (or the packing 30). However, in this case, it is necessary to arrange the engaging portion 26 and the engaged portion 33 in a well-balanced manner in the circumferential direction.

  The present invention can be widely used in a waterproof receptacle connector having a packing.

10: housing 10a: inner surface 12: fitting portion 20: connector 21: contact 22: main body 23: shell 24: first cylindrical portion 25: second cylindrical portion 26: engagement portion 26a: outer peripheral surface 27: base 28: engagement Stop claw (1st convex part)
30: Packing (waterproof packing)
31: first cylindrical portion 31a: inner peripheral surface 31b: outer peripheral surface 32: second cylindrical portion 32a: inner peripheral surface 32b: outer peripheral surface 33: engaged portion 34: concave portion 35: second locking claw portion (second Convex part)
35c: Locking surface 100: Waterproof receptacle connector L1: Distance L2: Distance

Claims (4)

A contact electrically connected to the connection target;
A body for holding the contact;
A cylindrical shell externally fitted to the body;
A cylindrical waterproof packing disposed on the outer peripheral side of the shell;
A housing having a cylindrical fitting portion which is externally fitted to the waterproof packing and into which a mating plug connector is fitted;
The main body and the shell are fixed to the housing, and the main body and a part of the shell are disposed in the fitting portion,
A waterproof receptacle connector, wherein an engagement portion is provided on one of an outer peripheral surface of the shell and an inner peripheral surface of the waterproof packing, and an engaged portion to be engaged with the engagement portion is provided on the other. The engaging portion is a convex portion that is formed so as to protrude radially outward of the shell or radially inward of the waterproof packing,
The engaged portion is a recess which is formed so as to be retracted radially outward from the inner circumferential surface of the waterproof packing or radially inward from the outer circumferential surface of the shell, and holds the convex portion. The waterproof receptacle connector according to 1.   The engaging portion and the engaged portion are formed so as to project radially inward of the waterproof packing and to be engaged with the first projection which is formed to project outward in the radial direction of the shell, and to be engaged with the first projection. The waterproof receptacle connector according to claim 1, wherein the waterproof receptacle connector is constituted by the second convex portion.   The radial distance between the inner surface of the housing and the waterproof packing at the position where the engaging portion and the engaged portion engage is the engaging portion and the engaged portion in the radial direction of the shell. The waterproof receptacle connector according to any one of claims 1 to 3, which is set to be shorter than a length of an engagement area in which the part and the part engage.

Images