JP2015198066A - waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector in which waterproofness can be ensured while down-sizing in the radial direction.SOLUTION: A waterproof connector includes a housing 40 forming an insertion space 40a into which a plug is inserted in the direction from the front side toward the rear side, a terminal member 30 interconnecting the inside and outside of the housing 40, and a cap member 10 attached to the front side of the housing 40, and having an opening 1a. A sealing member housing section 10b for attaching a sealing member 50 around the opening 1a is provided on the front side of the cap member 10, and a first abutting portion 10a to be joined to the housing 40 by laser welding is provided on the rear side of the cap member 10. The sealing member pressure contact surface 11a of the sealing member housing section 10b is provided on the front side of the first abutting portion 10a, so as to be a laser transmission surface.

Description

  The present invention relates to a waterproof connector that can ensure waterproofness and can be reduced in size in the radial direction.

  As a waterproof connector, Patent Document 1 discloses a jack in which an annular elastic member is fitted around a casing made of a case and a cover member. According to this, it is possible to prevent water from entering between the inner wall surface of the target device such as a portable information terminal and the jack 100.

  FIG. 8 is an exploded perspective view of the jack 100 described in Patent Document 1 as a waterproof connector. FIG. 9 is an explanatory diagram of a state in which the jack 100 is mounted on the device 130 to be attached. As shown in FIG. 8, the jack 100 has a structure in which a cap member 112 is attached to a housing 102 including a case 110 and a cover member 111. Since the case 110 and the cover member 111 constituting the housing 102 of the jack 100 are joined by laser welding, the intrusion of water from between the case 110 and the cover member 111 can be prevented.

  As shown in FIG. 9, the annular elastic member 120 is attached to the attachment portion 102b of the housing 102, and the outer periphery of the attachment portion 102b and the inner periphery of the elastic member 120 are sealed in a watertight manner. The connection terminal 103 is fixed to the circuit board 131 by soldering, and the jack 100 is attached to the inner wall surface of the device 130 to be attached integrally with the circuit board 131.

  However, as shown in FIG. 10, if the position of the cylindrical mounting portion 130a formed on the inner wall surface of the device 130 to be mounted does not match the position of the jack 100 soldered to the board or the like, the elastic member 120 is deformed. There is a problem that the amount is uneven and watertight sealing is impossible. FIG. 10 is a schematic diagram for explaining a problem in a state where the conventional jack 100 is attached to the device 130 to be attached, and shows a state where the deformation amount of the elastic member 120 is biased. In such a case, for example, when the required amount of deformation is not reached, water may enter, and if it collapses beyond the limit of elastic deformation, it may loosen with slight fluctuations. Conceivable. There is also a problem that stress is applied to the soldered portion of the jack 100 and the like.

  In order to prevent such a problem from occurring, for example, as shown in FIG. 11, the elastic member 220 is attached to the front surface of the waterproof connector 200 and the elastic member 220 is pressed against the inner wall surface of the device 230 to be attached. Can be considered. FIG. 11 is a schematic diagram of a state in which a conventionally considered waterproof connector 200 is mounted on a device 230 to be attached. According to this, even if the position of the opening portion of the device 230 to be attached and the position of the waterproof connector 200 soldered to the board or the like are slightly deviated, no stress is applied.

Utility Model Registration No. 3180031

  However, in this type of waterproof connector, it is necessary to join the cap member 212 of the waterproof connector 200 and the housing 202 in a watertight manner by laser welding or the like. Therefore, when the laser welding portion 202a is provided outside the elastic member mounting portion as in the waterproof connector 200 shown in FIG. 11, there is a problem that the size is increased in the radial direction.

  The present invention solves the above-described problems, and an object thereof is to provide a waterproof connector that can ensure waterproofness and can be reduced in size in the radial direction.

  The waterproof connector of the present invention is attached to a housing that forms an insertion space into which a plug is inserted from the front side to the back side, a terminal member that communicates the inside and outside of the housing, and the front side of the housing. A cap member having an opening, comprising a sealing member housing for attaching a sealing member around the opening on the front side of the cap member, and on the back side of the cap member Includes a contact portion joined to the housing by laser welding, and the sealing member pressure contact surface of the sealing member storage portion is on the near side of the contact portion so as to be a laser transmitting surface that transmits laser. It is provided.

  According to this configuration, since the sealing member pressure contact surface and the laser transmission surface are combined, the radial size can be reduced.

  In the waterproof connector of the present invention, the sealing member pressure contact surface is formed flat over the entire circumference.

  According to this configuration, since the sealing member pressure contact surface and the contact portion are uniform over the entire circumference, the laser transmission is not hindered and reliable sealing can be performed.

  Further, in the waterproof connector of the present invention, the sealing member storage portion is formed by respectively forming an inner peripheral wall and an outer peripheral wall on the inner peripheral side and the outer peripheral side of the sealing member press contact surface so as to protrude toward the front side. An insertion portion is provided, and the sealing member can be inserted into the sealing member insertion portion.

  According to this configuration, since the sealing member storage portion is provided with the sealing member insertion portion formed with the inner peripheral wall and the outer peripheral wall, the length of the sealing member in the depth direction is increased in order to increase the elastic deformation stroke. Even if it is made large, the deformation | transformation which the sealing member does not intend can be prevented and a waterproof function can be maintained.

  Further, in the waterproof connector of the present invention, the sealing member is a base portion that is inserted into the sealing member insertion portion so as to be in surface contact with the inner peripheral wall, the outer peripheral wall, and the sealing member pressure contact surface; An elastic deformation part integrally formed on the front side of the base part, and the sealing member is attached to the sealing member storage part.

  According to this configuration, since the base portion inserted into the sealing member insertion portion is also elastically deformed and contributes to the sealing, the elastic deformation stroke can be increased and unintended deformation of the sealing member is prevented. And can maintain waterproof function.

  In the waterproof connector according to the present invention, the casing is composed of a lower case and an upper cover member attached to the upper side of the lower case, and the cap member is formed by integrally forming the upper cover member. The abutting portion of the cap member and the first joining portion of the lower case, and the abutting portion of the upper cover member and the second joining portion of the lower case are joined by laser welding, respectively. It is characterized by that.

  In the case of a cap case complex in which the cap member and the cover member are integrated, a gap is not generated when the cap member and the lower case are laser-welded, and the waterproofness can be improved.

  According to the present invention, the front side of the cap member is provided with the sealing member storage portion around the opening, and the rear side of the cap member is provided with the contact portion joined to the housing by laser welding, and the sealing member It is provided on the front side of the contact portion so that the sealing member pressure contact surface of the storage portion becomes a laser transmitting surface. Thereby, since the sealing member pressure contact surface and the laser transmission surface are used together, the radial size can be reduced. Therefore, it is possible to provide a waterproof connector that can ensure waterproofness and can be reduced in size in the radial direction.

It is a perspective view which shows the waterproof connector of embodiment of this invention. It is a perspective view which shows the waterproof connector to which the sealing member was attached. It is a disassembled perspective view which shows the waterproof connector of embodiment of this invention. It is explanatory drawing of a cap case complex, and is a front view. It is explanatory drawing of a cap case complex, and is the perspective view seen from diagonally downward. It is explanatory drawing which shows the waterproof connector to which the sealing member was attached. It is explanatory drawing of a sealing member. It is a disassembled perspective view of the conventional jack. It is explanatory drawing of the state which mounted | wore the apparatus of attachment with the conventional jack. It is a schematic diagram explaining the malfunction of the state which mounted | wore the apparatus of attachment with the conventional jack. It is a schematic diagram of the state which mounted | wore the apparatus of attachment with the waterproof connector considered conventionally.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For easy understanding, the dimensions of the drawings are appropriately changed.

  FIG. 1 is a perspective view showing a waterproof connector 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the waterproof connector 1 to which the sealing member 50 is attached. FIG. 3 is an exploded perspective view showing the waterproof connector 1 according to the embodiment of the present invention. FIG. 4 is an explanatory view of the cap case complex 41 and is a front view. FIG. 5 is an explanatory view of the cap case complex 41, and is a perspective view seen from obliquely below. FIG. 6 is an explanatory view showing the waterproof connector 1 to which the sealing member 50 is attached. FIG. 7 is an explanatory diagram of the sealing member 50.

  The waterproof connector 1 of this embodiment is provided with the cap member 10 which has the opening 1a, and the housing | casing 40 which the several terminal member 30 for an electrical connection penetrates, as shown in FIGS. . The cap member 10 is joined to the housing 40 to form an insertion space 40a. As shown in FIG. 2, a sealing member 50 can be attached around the opening 1 a of the cap member 10. The waterproof connector 1 is attached to an electronic device in a state of being mounted on a substrate (not shown). Then, the plug is inserted into the insertion space 40a from the opening 1a, and the connection terminal of the plug is connected to the electric circuit of the electronic device via the terminal member 30.

  In the following description, the Z1 side in FIG. 1 is described as the upper side, the Z2 side as the lower side, the X1 side as the left side, the X2 side as the right side, the Y1 side as the near side, and the Y2 side as the back side. This is for ease of explanation, and does not limit the direction when the waterproof connector 1 is used.

  The casing 40 is made of an insulating synthetic resin. As shown in FIG. 3, the lower case 43 has openings on the front side and the upper side, and the upper cover member 42 is attached to the upper side of the lower case 43.

  The lower case 43 is made of a light absorbing material. For example, a black nylon resin can be used. Nylon resin can be molded by moderate heating, and has a light absorptivity when it contains a lot of coloring pigments. The lower case 43 includes a first joint 43a so as to surround three sides of the opening on the near side, and a second joint 43b so as to surround three sides of the upper opening. Further, the terminal member 30 is attached to the lower case 43.

  The terminal member 30 is formed of a conductive metal and penetrates the inside and outside of the housing 40 (lower case 43). For the terminal member 30, for example, phosphor bronze can be used. The terminal member 30 is provided such that a movable contact portion 30a electrically connected to a connection terminal (not shown) of the plug is exposed to the insertion space 40a that continues from the opening 1a to the inside of the housing 40.

  A portion of the terminal member 30 (a portion that penetrates the lower case 43) is in close contact with the synthetic resin of the lower case 43, and is sealed watertight. More specifically, the terminal member 30 is integrated with the lower case 43 by insert molding. In addition, it is not limited to insert molding, For example, you may integrate by an adhesive material etc.

  The upper cover member 42 attached to the upper side of the lower case 43 is made of a light transmitting material that can transmit laser light. For example, milky white nylon resin can be used. Nylon resin can be molded by moderate heating, and when it does not contain a pigment, it is milky white and translucent. The upper cover member 42 includes a second contact portion 42 b that is joined to the second joint portion 43 b of the lower case 43. The second contact portion 42b is formed with a constant plate thickness from the upper surface of the upper cover member 42.

  In the waterproof connector 1 of the present embodiment, the upper cover member 42 is a cap case complex 41 formed by integrally forming the cap member 10. Similar to the upper cover member 42, the cap member 10 is formed of a light transmissive material that can transmit laser light.

  The cap case complex 41 of the waterproof connector 1 according to the present embodiment includes a sealing member storage portion 10 b for attaching the sealing member 50 to the front side of the cap member 10. Further, on the back side of the cap member 10, a first contact portion 10 a that is joined to the first joint portion 43 a of the lower case 43 is provided.

  As shown in FIG. 1, the sealing member storage portion 10 b is formed by respectively sealing the inner peripheral wall 11 b and the outer peripheral wall 11 c on the inner peripheral side and the outer peripheral side of the sealing member press contact surface 11 a so as to protrude toward the front side. An insertion portion 11 is provided.

  The first contact portion 10 a joined to the first joint portion 43 a of the lower case 43 is located on the back side of the sealing member pressure contact surface 11 a of the sealing member insertion portion 11. As shown in FIG. 5, the first contact portion 10 a is formed flat along the three sides of the cap member 10. The sealing member pressure contact surface 11a is formed flat over the entire circumference, and the distance (plate thickness) to the first contact portion 10a is a uniform region.

  FIG. 6 shows a cross-section in which a part of the perspective view showing the waterproof connector 1 to which the sealing member 50 is attached is cut off. The sealing member pressure contact surface 11a and the first contact portion 10a constitute a front side surface and a back side surface formed in a thin plate shape on the cap member 10. In other words, the sealing member pressure contact surface 11a is provided on the front side of the first contact portion 10a.

  As shown in FIG. 5, the second contact portion 42 b joined to the second joint portion 43 b of the lower case 43 is formed flat along the three sides of the upper cover member 42. The edge portion of the upper cover member 42 where the second contact portion 42b is located is a region having a uniform plate thickness.

  The first joint portion 43a of the lower case 43 shown in FIG. 3 is joined to the first contact portion 10a of the cap case complex 41 shown in FIG. 5 by laser welding. Further, the second joint portion 43b of the lower case 43 shown in FIG. 3 is joined to the second contact portion 42b of the cap case complex 41 shown in FIG. 5 by laser welding.

  In laser welding for joining the first contact portion 10a and the first joint portion 43a, laser light is irradiated from the front side (Y1 side) toward the sealing member press-contact surface 11a and transmitted to the back side (Y2 side). The first joint 43a is heated by the laser beam thus made, and the first contact portion 10a and the first joint 43a are welded. In other words, the sealing member storage portion 10b of the cap member 10 has a structure in which the sealing member pressure contact surface 11a and the laser transmission surface are combined. Since the sealing member pressure contact surface 11a and the first contact portion 10a are uniform over the entire circumference, the laser transmission is not hindered and reliable sealing can be performed.

  In laser welding for joining the second contact portion 42b and the second joint portion 43b, the second joint portion 43b is irradiated with laser light from the upper side (Z1 side) and transmitted through the lower side (Z2 side). The second contact part 42b and the second joint part 43b are welded by heating. Since it is the cap case composite body 41 in which the cap member 10 and the cover member are integrated, a gap is hardly generated when the cap member 10 and the lower case 43 are laser-welded.

  The waterproof connector 1 of the present embodiment is mounted by soldering a plurality of terminal members 30 exposed to the outside of the housing 40 to a board (not shown).

  As shown in FIG. 7, the sealing member 50 attached to the waterproof connector 1 of the present embodiment is formed integrally with the base part 50a inserted into the sealing member insertion part 11 and the front side of the base part 50a. Elastic deformation part 50b. The base portion 50a of the sealing member 50 is inserted into the inner peripheral wall 11b, the outer peripheral wall 11c, and the sealing member pressure contact surface 11a of the sealing member insertion portion 11 so as to be in surface contact.

  The waterproof connector 1 of this embodiment is attached to an electronic device (not shown). At this time, the sealing member 50 seals the space between the inner wall surface of the electronic device and the cap member 10 by pressing the front side of the elastic deformation portion 50b against the inner wall surface of the electronic device (not shown). Since the sealing member 50 attached to the waterproof connector 1 of the present embodiment also elastically deforms the base portion 50a inserted into the sealing member insertion portion 11 and contributes to sealing, the elastic deformation stroke can be increased. This can prevent unintended deformation of the sealing member 50 and maintain a waterproof function.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  The waterproof connector 1 of the present embodiment includes a housing 40 that forms an insertion space 40a into which a plug is inserted from the front side toward the back side, a terminal member 30 that communicates the inside and outside of the housing 40, and the housing 40 And a cap member 10 attached to the front side and having an opening 1a. The front side of the cap member 10 is provided with a sealing member storage portion 10b for attaching the sealing member 50 around the opening 1a, and the rear side of the cap member 10 is joined to the housing 40 by laser welding. 1 contact part 10a is provided. And the sealing member press-contact surface 11a of the sealing member accommodating part 10b is provided in the near side of the 1st contact part 10a so that it may become a laser transmission surface which permeate | transmits a laser. According to this configuration, since the sealing member pressure contact surface 11a and the laser transmission surface are combined, the radial size can be reduced.

  Moreover, in the waterproof connector 1 of this embodiment, the sealing member press-contact surface 11a was formed flat over the perimeter. According to this structure, since the sealing member press-contact surface 11a and the first contact portion 10a are uniform over the entire circumference, the laser transmission is not hindered and reliable sealing can be performed.

  Further, the sealing member storage portion 10b is provided with sealing member insertion portions 11 formed so as to project the inner peripheral wall 11b and the outer peripheral wall 11c to the front side on the inner peripheral side and the outer peripheral side of the sealing member press contact surface 11a, respectively. Therefore, the sealing member 50 can be inserted into the sealing member insertion portion 11. According to this configuration, even if the length of the sealing member 50 in the depth direction is increased in order to increase the elastic deformation stroke, unintended deformation (falling) of the sealing member 50 can be prevented, and the waterproof function Can be maintained.

  The sealing member 50 includes a base portion 50a that is inserted into the sealing member insertion portion 11 so as to be in surface contact with the inner peripheral wall 11b, the outer peripheral wall 11c, and the sealing member pressure contact surface 11a, and a front side of the base portion 50a. The elastic deformation part 50b integrally formed in the side is provided, and is attached to the sealing member accommodating part 10b. According to this structure, since the base part 50a inserted in the sealing member insertion part 11 is also elastically deformed and contributes to sealing, an elastic deformation stroke can be enlarged and the sealing member 50 is not intended. Deformation is prevented and the waterproof function can be maintained.

  In the waterproof connector 1 of the present embodiment, the housing 40 includes a lower case 43 and an upper cover member 42 attached to the upper side of the lower case 43. The cap member 10 is a cap case complex 41 in which the upper cover member 42 is integrally formed. Then, the first contact portion 10a of the cap member 10 and the first joint portion 43a of the lower case 43, and the second contact portion 42b of the upper cover member 42 and the second joint portion 43b of the lower case 43, Each was joined by laser welding. In the case of the cap case complex 41 in which the cap member 10 and the cover member are integrated, a gap is not generated when the cap member 10 and the lower case 43 are laser-welded, and the waterproofness can be improved.

  As described above, the waterproof connector 1 according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Is possible. For example, the present invention can be modified as follows, and these also belong to the technical scope of the present invention.

  (1) In the present embodiment, the terminal member 30 includes the movable contact portion 30a that is electrically connected to the connection terminal of the plug, but the movable contact portion 30a is changed to a configuration provided in a separate member. Also good. Another member provided with the movable contact portion 30a may be disposed so as to engage with the terminal member 30, for example, and the movable contact portion 30a and the terminal member 30 may be electrically connected.

  (2) In the present embodiment, the cap member 10 is the cap case complex 41 formed by integrally forming the upper cover member 42. However, the cap member 10 and the upper cover member 42 may be separate members. . In this case, it is preferable that the laser welding for joining the cap member 10 to the upper cover member 42 is performed continuously with the laser welding for joining the lower case 43.

DESCRIPTION OF SYMBOLS 1 Waterproof connector 1a Opening 10 Cap member 10a 1st contact part 10b Sealing member accommodating part 11 Sealing member insertion part 11a Sealing member press-contact surface 11b Inner peripheral wall 11c Outer peripheral wall 30 Terminal member 30a Movable contact part 40 Housing | casing 40a Insertion Space 41 Cap case complex 42 Upper cover member 42b Second contact portion 43 Lower case 43a First joint portion 43b Second joint portion 50 Sealing member 50a Base portion 50b Elastic deformation portion

Claims (5)

A housing forming an insertion space into which the plug is inserted from the front side toward the back side;
A terminal member communicating between the inside and the outside of the housing;
A cap member attached to the front side of the housing and having an opening, and a waterproof connector comprising:
A front side of the cap member is provided with a sealing member housing portion for attaching a sealing member around the opening, and a rear portion of the cap member is provided with a contact portion joined to the housing by laser welding. Prepared,
The waterproof connector, wherein the sealing member pressure contact surface of the sealing member storage portion is provided on the near side of the contact portion so as to be a laser transmitting surface that transmits laser.   The waterproof connector according to claim 1, wherein the sealing member pressure contact surface is formed flat over the entire circumference.   The sealing member storage portion is provided with sealing member insertion portions formed on the inner peripheral side and the outer peripheral side of the sealing member pressure contact surface so as to project the inner peripheral wall and the outer peripheral wall toward the front side, respectively, The waterproof connector according to claim 1, wherein a sealing member can be inserted into the sealing member insertion portion. The sealing member is integrated with a base portion that is inserted into the sealing member insertion portion so as to be able to come into surface contact with the inner peripheral wall, the outer peripheral wall, and the sealing member press-contact surface, and a front side of the base portion. An elastically deformable portion formed,
The waterproof connector according to claim 3, wherein the sealing member is attached to the sealing member storage portion. The housing is composed of a lower case and an upper cover member attached to the upper side of the lower case,
The cap member is a cap case composite formed by integrally forming the upper cover member,
The contact portion of the cap member and the first joint portion of the lower case, and the contact portion of the upper cover member and the second joint portion of the lower case are joined by laser welding, respectively. The waterproof connector according to any one of claims 1 to 4, characterized in that: