# Patent

## Title
Connector with sliding member

## Abstract

A connector includes an outer housing, an inner housing provided with an engagement latch, a slide channel, and rails each being a groove, and a sliding member provided with support arms engaged with the respective rails, and a protrusion to latch the engagement latch. The slide channel is formed with a slide surface extending along the rail. The support arms each include a lower surface facing the slide surface, and an upper surface inclined relative to the slide surface. The groove forming the rail is formed as a recess including a bottom surface, a first side surface, and a second side surface. The second side surface faces the upper surface of the support arm, and is formed at an inclination angle corresponding to that of the upper surface.

## Background
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of Japanese Patent Application No. 2016-34896, filed on Feb. 25, 2016, the entire disclosure of which is incorporated by reference herein.
TECHNICAL FIELD
This application relates generally to a connector.
BACKGROUND ART
Japan Patent No. 4657034 discloses a connector that has a Connector Position Assurance (CPA) function. This connector includes a first housing, a second housing to be engaged with the first housing, and further a sliding member. The sliding member is attached to the second housing in a slidable manner from a first position (stand-by position) that is an initial position to a predetermined second position (engagement locking position) upon completion of the engagement of the second housing with the first housing. This sliding member serves as a CPA member that enables a user to check the completion of the engagement of both the housings by a sliding action from the first position to the second position.
SUMMARY OF THE INVENTION
According to the connector disclosed in Japan Patent No. 4657034, when, however, an external load is applied to this connector, the sliding member may be detached from the second housing.
The present disclosure has been made in view of the foregoing circumstances, and an objective is to provide a connector that is capable of preventing a sliding member from being detached even if an external load is applied.
In order to accomplish the above objective, a connector according to the present disclosure includes:
a first housing;
a second housing including a protrusion catch, a slide channel, and a rail formed as a groove along the slide channel, the second housing being to be engaged with the first housing; and
a sliding member including a support arm to be engaged with the rail upon engagement with the groove, and a protrusion to latch the protrusion catch, the sliding member being placed in the slide channel,
in which:
the slide channel is formed with a slide surface extended along the rail;
the support arm includes a first surface facing the slide surface, and a second surface formed at a back side of the first surface, and inclined relative to the slide surface;
the groove is formed as a recess that includes a bottom surface, a first side surface, and a second side surface;
the second side surface faces the second surface of the support arm, and is formed at an inclination angle corresponding to an inclination angle of the second surface; and
when the first housing and the second housing are engaged with each other, the first housing depresses the protrusion latching the protrusion catch of the second housing to cancel a latching between the protrusion catch and the protrusion, enabling the sliding member to be slidable.
The second housing may include a pair of ribs formed along a direction in which the slide channel extends; and
the groove may be formed in each of the pair of ribs.
The sliding member may include a pair of the support arms; and
the second surface of the support arm may be formed so as to be inclined in a direction in which the pair of support arms face each other.
A leading end part of the support arm may be formed with a guide surface that guides the sliding member into the groove.
The support arm may include a first support arm part, and a second support arm part extending from an end of the first support arm part, and having a smaller lateral cross-sectional area than a lateral cross-sectional area of the first support arm part; and
the rail may include a first rail part to be engaged with the first support arm part, and a second rail part to be engaged with the second support arm part.
A catch may be disposed at the slide channel; and
the sliding member may include a latching arm including a latch to latch the catch.
A leading end part of the support arm and a leading end part of the latching arm may be located at a same position in a lengthwise direction; and
a protrusion protruding in a direction in which the support arm and the latching arm face each other may be formed on a leading end part of at least either the support arm and the latching arm.
A guide surface that guides the sliding member into the slide channel may be formed at a leading end part of the latching arm.
The first housing may include an engagement catch; and
the second housing may include an engagement latch to latch the engagement catch, and also serving as the protrusion catch.
The respective first and second housings may be housings of the connector that includes a terminal connected to a wiring.
According to the present disclosure, the second side surface of the groove forming the rail is formed at the inclination angle corresponding to that of the second surface of the support arm. Accordingly, since the support arm is engaged with the rail with the second surface of the support arm facing the second side surface of the groove, a detachment of the sliding member from the second housing is preventable even if external load is applied to the connector.



BRIEF DESCRIPTION OF THE DRAWINGS
A more complete understanding of this application can be obtained when the following detailed description is considered in conjunction with the following drawings, in which:
FIG. 1 is a perspective view illustrating a connector according to an embodiment of the present disclosure;
FIG. 2 is an exploded perspective view of the connector;
FIG. 3 is an exploded YZ cross-sectional view;
FIG. 4 is a perspective view illustrating an inner housing and a sliding member;
FIG. 5 is a schematic cross-sectional view of the inner housing for explaining a slide channel;
FIGS. 6A and 6B are each a diagram for explaining the slide channel, and FIG. 6A is a (first) cross-sectional view taken along a line A-A in FIG. 5, while FIG. 6B is a cross-sectional view taken along a line B-B in FIG. 6A;
FIGS. 7A and 7B are each a diagram for explaining a rail, and FIG. 7A is a (second) cross-sectional view taken along the line A-A in FIG. 5, while FIG. 7B is a cross-sectional view taken along a line C-C in FIG. 7A;
FIG. 8 is a (first) perspective view of the sliding member;
FIG. 9A is a plan view of the sliding member, and FIG. 9B is a side view of the sliding member;
FIG. 10A is a cross-sectional view taken along a line D-D in FIG. 5, and FIG. 10B is an XY cross-sectional view of the sliding member placed at a first position;
FIG. 11A is an XY cross-sectional view of the sliding member placed at a second position, FIG. 11B is a cross-sectional view taken along a line E-E in FIG. 11A, and FIG. 11C is a cross-sectional view taken along a line F-F in FIG. 11A;
FIG. 12 is a (second) perspective view of the sliding member;
FIG. 13 is a (first) YZ cross-sectional view of the connector for explaining an engagement between an outer housing and the inner housing;
FIG. 14 is a (second) YZ cross-sectional view of the connector for explaining an engagement between the outer housing and the inner housing;
FIG. 15 is a (third) YZ cross-sectional view of the connector for explaining an engagement between the outer housing and the inner housing;
FIG. 16 is a (fourth) YZ cross-sectional view of the connector for explaining an engagement between the outer housing and the inner housing;
FIG. 17 is a (fifth) YZ cross-sectional view of the connector for explaining an engagement between the outer housing and the inner housing;
FIG. 18A is a (first) XY cross-sectional view of the sliding member, and the like, for explaining a Connector Position Assurance (CPA) function of the sliding member, FIG. 18B is a (second) XY cross-sectional view of the sliding member, and the like, for explaining the CPA function of the sliding member, and FIG. 18C is a (third) XY cross-sectional view of the sliding member, and the like, for explaining the CPA function of the sliding member;
FIG. 19 is a (first) YZ cross-sectional view of the connector for explaining the CPA function of the sliding member;
FIG. 20 is a (second) YZ cross-sectional view of the connector for explaining the CPA function of the sliding member;
FIG. 21 is a (first) YZ cross-sectional view of the connector for explaining an action when the sliding member is slid reversely;
FIG. 22 is a (second) YZ cross-sectional view of the connector for explaining an action when the sliding member is slid reversely;
FIG. 23A is a (first) XY cross-sectional view of the sliding member, and the like, for explaining an action when the sliding member is slid reversely, FIG. 23B is a (second) XY cross-sectional view of the sliding member, and the like, for explaining an action when the sliding member is slid reversely, and FIG. 23C is a (third) XY cross-sectional view of the sliding member, and the like, for explaining an action when the sliding member is slid reversely;
FIG. 24 is a (third) YZ cross-sectional view of the connector for explaining an action when the sliding member is slid reversely;
FIG. 25 is an YZ cross-sectional view of the connector for explaining a disengagement between the outer housing and the inner housing;
FIG. 26A is a (first) XZ cross-sectional view for explaining an effect according to the embodiment, and FIG. 26B is a (second) XZ cross-sectional view for explaining an effect according to the embodiment;
FIG. 27 is a (third) XZ cross-sectional view for explaining an effect according to the embodiment;
FIG. 28A is a cross-sectional view for explaining an effect of protrusions formed at a latching arm and at a support arm, respectively, and FIG. 28B is a perspective view for explaining an effect of the protrusions formed at the latching arm and at the support arm, respectively;
FIG. 29 is a cross-sectional view for explaining an effect of guide surfaces formed at respective leading end parts of the latching arm and of the support arm;
FIG. 30 is a cross-sectional view for explaining an effect of a guide surface formed at the rail;
FIG. 31 is an XZ cross-sectional view of a connector according to a first modified example; and
FIG. 32 is an XZ cross-sectional view of a connector according to a second modified example.



DETAILED DESCRIPTION OF THE EMBODIMENT
An explanation will be given of a connector 1 according to an embodiment of the present disclosure with reference to FIGS. 1 to 30. In order to facilitate understanding to the present disclosure, an XYZ coordinate system is defined, and is referred as appropriate.
The connector 1 is applied to, for example, electronic circuit components for an automobile, and has a Connector Position Assurance (CPA) function. As illustrated in FIGS. 1 and 2, the connector 1 includes an outer housing 10, an inner housing 20, and a sliding member 30 (CPA member) that becomes able to slide upon engagement of both the outer housing 10 and the inner housing 20.
As illustrated in FIG. 3, in this embodiment, the outer housing 10 is a housing of a receptacle connector mounted on a wiring board S. The outer housing 10 is formed of a plastic, and is formed by, for example, injection molding. The outer housing 10 is assembled with multiple male terminals 40.
Each male terminal 40 is formed of a conductive material. The male terminal 40 has an end 40a at the +Y side and an end 40b at the −Y side both protruding from the outer housing 10. The end 40a of the male terminal 40 at the +Y side protrudes to the interior of an engagement opening 11 formed in the outer housing 10. The end 40b of the male terminal 40 at the −Y side is exposed from the rear end surface of the outer housing 10 at the −Y side, is curved in a substantially S-shape, and protrudes in parallel with the −Y direction. The end 40b of the male terminal 40 is applied as an external lead to be soldered to the wiring board S.
The outer housing 10 is a member formed in a substantially box shape in which the engagement opening 11 opened in the +Y direction is formed. The inner housing 20 is to be fitted in the engagement opening 11 of the outer housing 10. A fitting direction D1 in which the inner housing 20 is fitted in the outer housing 10 is consistent with the −Y direction. In addition, the outer housing 10 includes an engagement catch 13.
The engagement catch 13 is formed on a lower surface 12a of a ceiling wall 12 that is a part of wall defining the outer housing 10 at the nearby location to the +Y side. The engagement catch 13 includes, from the rear end side (+Y side) in the fitting direction D1 in sequence, an inclined surface 13a, a parallel surface 13b, and a standing-upright surface 13c. The inclined surface 13a includes a surface inclined relative to the fitting direction D1. The parallel surface 13b includes a parallel surface to the fitting direction D1. The standing-upright surface 13c includes a surface substantially in parallel with the Z-axis direction.
The inner housing 20 is a housing of a plug connector to which wirings W are connected in this embodiment. The inner housing 20 is formed of a plastic, and is formed by, for example, injection molding. Multiple female terminals 50 are fitted in this inner housing 20.
Each female terminal 50 is formed by, for example, bending a conductive sheet metal. A cylindrical part 51 which is formed in a substantially rectangular cylindrical shape, and in which the end 40a of each male terminal 40 at the +Y side is fitted is formed at the end of the female terminal 50 at the −Y side. The cylindrical part 51 includes an elastic contact piece to be in contact with the end 40a of the male terminal 40. The end 40a of the male terminal 40 fitted in the cylindrical part 51 is conductively fastened by the elastic force of the elastic contact piece of the cylindrical part 51. In addition, a binding part 52 that attaches and fastens the wirings W by pressure which are fitted therein is formed at the end of the female terminal 50 at the +Y side.
The inner housing 20 is formed in a substantially cuboid shape that has the lengthwise direction substantially in parallel with the Y-axis direction. As illustrated in FIG. 4, multiple terminal fitting openings 21 in which the respective female terminals 50 are fitted are formed in the rear end surface (the end surface at the +Y side) of the inner housing 20. As illustrated in FIG. 3, each terminal fitting opening 21 is in communication with a terminal retaining room 22 formed inside the inner housing 20.
As illustrated in FIGS. 3, 4, the inner housing 20 includes an engagement latch 23, a latching release 24, ribs 25, and a pair of locking arms 60R, 60L.
The engagement catch 13 of the outer housing 10 is to be latched by the engagement latch 23. The engagement latch 23 is provided between the locking arm 60R and the locking arm 60L so as to interlink the locking arm 60R with the locking arm 60L. The engagement latch 23 includes, from the leading end side (−Y side) in the fitting direction D1 of the inner housing 20 in sequence, an inclined surface 23a, an upper parallel surface 23b, a lower parallel surface 23d, and a standing-upright surface 23c. The inclined surface 23a includes an inclined surface relative to the fitting direction D1. The upper parallel surface 23b and the lower parallel surface 23d are each include a plane. The inclined surface 23a and the upper parallel surface 23b are utilized as to-be-guided surfaces that are guided by the engagement catch 13 in accordance with the advancement of the engagement between the outer housing 10 and the inner housing 20. The standing-upright surface 23c includes a surface substantially in parallel with the Z-axis direction. When the standing-upright surface 23c faces the standing-upright surface 13c of the engagement catch 13, the latching between the engagement latch 23 and the engagement catch 13 completes. The lower parallel surface 23d is utilized as a guide surface that guides a protrusion 35 of the sliding member 30 in accordance with the sliding action of the sliding member 30.
In addition, the engagement latch 23 is to be also latched by the protrusion 35 of the sliding member 30. Hence, the engagement latch 23 also serves as a protrusion catch.
The latching release 24 is provided on the locking arms 60R, 60L. When a user depresses the latching release 24, the latching between the engagement latch 23 and the engagement catch 13 is released. This latching release enables the user to pull out the inner housing 20 from the outer housing 10.
As illustrated in FIG. 4, the ribs 25 are formed so as to improve the rigidity and strength of the inner housing 20. The ribs 25 are formed along the Y-axis direction.
As illustrated in FIG. 5, the locking arm 60R includes a leading-end-side locking arm part 61R, a parallel locking arm part 62R, and a rear-end-side locking arm part 63R. In this embodiment, the leading-end-side locking arm part 61R is formed so as to extend in the vertical direction from the nearby location to the leading end part (−Y side end part) of a ceiling wall 26 that is a part of wall defining the inner housing 20. However, the leading-end-side locking arm part 61R may be extended in directions other than the vertical direction. In this embodiment, the rear-end-side locking arm part 63R is extended in the vertical direction from the nearby location to the rear end part (+Y side end part) of the ceiling wall 26. However, the rear-end-side locking arm part 63R may be extended in directions other than the vertical direction. The parallel locking arm part 62R interlinks the leading-end-side locking arm part 61R with the rear-end-side locking arm part 63R, and is formed substantially in parallel with the Y-axis direction.
The locking arm 60L employs the similar structure to that of the locking arm 60R. More specifically, as illustrated in FIG. 4, the locking arm 60L includes a leading-end-side locking arm part 61L, a parallel locking arm part 62L, and a rear-end-side locking arm part 63L. The rear-end-side locking arm part 63L is extended in the vertical direction in this embodiment, but may be extended in directions other than the vertical direction.
The locking arms 60R, 60L employing the above structure are formed so as to be deflectable in accordance with the advancement of engagement between the outer housing 10 and the inner housing 20.
In addition, as illustrated in FIG. 4, the inner housing 20 is provided with a slide channel 70 extended along the Y-axis direction, and rails 72 formed on the opposing surfaces of the respective ribs 25 facing each other.
As illustrated in FIG. 5, the slide channel 70 allows the sliding member 30 to slide, and is formed so as to allow the sliding member 30 to pass through upon engagement between the two housings. The sliding passage 70 is provided at the upper side (+Z side) of the ceiling wall 26 of the inner housing 20. The sliding passage 70 is formed with a slide surface 71 that faces a lower surface 30a (the surface at the −Z side) of the sliding member 30 when the sliding member 30 slides.
FIGS. 6A and 6B are each a diagram for explaining the slide channel 70, and FIG. 6A is a cross-sectional view taken along a line A-A in FIG. 5, while FIG. 6B is a cross-sectional view taken along a line B-B in FIG. 6A. In FIG. 6B, some structural components, such as the latching release 24, and the locking arms 60R, 60L, are omitted.
As illustrated in FIGS. 6A, 6B, the rear-end-side locking arm parts 63R, 63L are disposed at both sides of the slide channel 70, respectively. In addition, the slide surface 71 is formed with engagement parts 71a, 71b, and 71c. The engagement parts 71a, 71b, and 71c are each formed as a recess that has a bottom. The bottom surface of each engagement part 71a, 71b, 71c is an offset surface from the slide surface 71 in the −Z direction, and is a parallel surface to the sliding surface 71.
FIG. 7A is a cross-sectional view taken along the line A-A in FIG. 5 for explaining the rails 72. FIG. 7B is a cross-sectional view taken along a line C-C in FIG. 7A. In FIG. 7B, the latching release 24, the locking arms 60R, 60L, and the like, are omitted.
As illustrated in FIG. 7A, each rail 72 is formed so as to retract therein the rib 25, and is formed as a groove. Each rail 72 includes a first rail part 72A and a second rail part 72B that have different lateral cross-sectional areas (the area of the XZ cross-section) from each other. The first rail part 72A has the larger lateral cross-sectional area than that of the second rail part 72B. The rail 72 (more specifically, the first rail part 72A and the second rail part 72B) is formed in, as illustrated in FIG. 6B and FIG. 7B, a recess that includes a bottom surface 73, a first side surface 74, and a second side surface 75. The bottom surface 73 is a parallel surface to the YZ plane. In this embodiment, the first side surface 74 forms a part of the slide surface 71. In this embodiment, although the first side surface 74 is a part of the slide surface 71, the present disclosure is not limited to this example structure, and may be not a part of the slide surface 71. The second side surface 75 is formed so as to be inclined relative to the slide surface 71. The respective second side surfaces 75 of the first rail part 72A and the second rail part 72B have the substantially equal inclination angle to each other.
In addition, as illustrated in FIG. 6A, provided at a connection section between the first rail part 72A and the second rail part 72B is a guide surface G4 that is inclined relative to the Y-axis direction. This guide surface G4 guides the sliding member 30 into the inner housing 20 at the time of manufacturing and assembling of the connector 1 to improve the fitting easiness, thereby improving the assembling workability.
The sliding member 30 serves as the CPA (Connector Position Assurance) member that locks the engagement between both the outer and inner housings 10, 20. The sliding member 30 is applied so as to allow the user to check whether or not the engagement between both the outer and inner housings 10, 20 is fully completed within the engagement work. As illustrated in FIG. 8, the sliding member 30 includes a sliding member base 31, a main arm 32 protruding from the sliding member base 31, a pair of latching arms 33R, 33L, and a pair of support arms 34R, 34L.
The sliding member base 31 is utilized as a depressed part to be depressed by the user when the user slides the sliding member 30.
As illustrated in FIGS. 9A, 9B, the main arm 32 is formed so as to protrude from the sliding member base 31 in the −Y direction. Provided at the leading end of the main arm 32 is the protrusion 35 that protrudes upwardly (+Z direction). A rear end surface 35a of the protrusion 35 is formed as an inclined surface inclined in the Y-axis direction. The rear end surface 35a serves as a guide surface that guides the moving main arm 32 when the sliding member 30 is slid in the +Y direction.
The latching arms 33R, 33L are formed so as to protrude from the sliding member base 31 in the −Y direction with the main arm 32 being present therebetween. The latching arms 33R, 33L are interlinked with the main arm 32 by an interlinking part 32a. In addition, the latching arms 33R, 33L include respective latches 36, and respective tentative latches 37.
As illustrated in FIG. 11A, the rear-end-side locking arm parts 63R, 63L of the locking arms 60R, 60L are to be latched by the respective latches 36. Hence, the rear-end-side locking arm parts 63R, 63L each serve as a catch to be latched by the respective latches 36. The latches 36 are formed so as to protrude outwardly relative to each other. More specifically, the latches 36 are formed on the surface of the latching arm 33R at the −X side, and the surface of the latching arm 33L at the +X side. In addition, a surface 36a of the latch 36 at the −Y side and a surface 36b thereof at the +Y side are each formed as an inclined surface inclined in the Y-axis direction. The surfaces 36a, 36b of the respective latches 36 serve as guide surfaces that guide the rear-end-side locking arm parts 63R, 63L, respectively, while being in contact therewith when the sliding member 30 is slid in the −Y direction and in the +Y direction.
As illustrated in FIG. 10B, the rear-end-side locking arm parts 63R, 63L of the locking arms 60R, 60L are tentatively latched by the respective tentative latches 37. Hence, the rear-end-side locking arm parts 63R, 63L also serve as catches to be tentatively latched by the respective tentative latches 37. The tentative latches 37 prevents the sliding member 30 from moving in the +Y direction upon tentatively latching the rear-end-side locking arm parts 63R, 63L, respectively, thereby preventing the sliding member 30 from pulling out from the inner housing 20. The tentative latches 37 are formed in a shape protruding outwardly relative to each other like the respective latches 36. More specifically, the tentative latches 37 are formed on the surface of the latching arm 33R at the −X side and on the surface of the latching arm 33L at the +X side. In addition, the tentative latches 37 are formed ahead of the respective latches 36 toward a leading end side (−Y side).
Still further, as is clear from the enlarged view that is FIG. 9A, respective guide surfaces G1 are formed at the leading end parts of the latching arms 33R, 33L. The guide surface G1 is formed as an inclined surface inclined in the Y-axis direction. This guide surface G1 is formed so as to improve the fitting easiness by guiding the sliding member 30 into the inner housing 20 at the time of manufacturing and assembling of the connector 1, thereby improving the assembling workability.
As illustrated in FIG. 10A, the support arms 34R, 34L are formed so as to protrude from the sliding member base 31 in the −Y direction with the latching arms 33R, 33L being present therebetween. The latching arms 34R, 34L each include a first support arm part 34A, and a second support arm part 34B extended from the rear end of the first support arm part 34A. The second support arm part 34B has a smaller lateral cross-sectional area (the area of the XZ cross-section) than that of the first support arm part 34A. In addition, the first support arm part 34A is formed so as to be engaged with the first rail part 72A of the rail 72. Likewise, the second support arm part 34B is formed so as to be engaged with the second rail part 72B of the rail 72. As explained above, the sliding member 30 and the inner housing 20 include the two engagement components, thereby enhancing the action of preventing the sliding member 30 from being detached from the inner housing 20.
As illustrated in FIGS. 11B, 11C, the support arms 34R, 34L each include an upper surface 30b (second surface) that faces the second side surface 75 of the rail 72 in a recess shape, and the lower surface 30a (first surface) that faces the first side surface 74 of the rail 72. The upper surface 30b is formed at the opposite side to the lower surface 30a, and is formed so as to be inclined relative to the slide surface 71. In addition, the respective upper surfaces 30b of the support arms 34R, 34L are formed so as to be inclined in the direction in which the support arms 34R, 34L face each other. As explained above, when the support arms 34R, 34L are engaged with the respective rails 72 that are respective grooves, the sliding member 30 is prevented from being detached from the inner housing 20. The inclination angle of the upper surface 30b is substantially equal to the corresponding inclination angle of the second side surface 75 of the rail 72. The upper surface 30b that is an inclination surface is formed on both the first support arm part 34A and the second support arm part 34B.
As is clear from the enlarged view that is FIG. 9A, guide surfaces G2, G3 are formed at the respective leading end parts of the support arms 34R, 34L. The guide surfaces G2, G3 are each formed as an inclined surface inclined in the Y-axis direction. Such guide surfaces G2, G3 are formed so as to improve the fitting easiness by guiding the sliding member 30 into the inner housing 20 at the time of manufacturing and assembling of the connector 1, thereby improving the assembling workability.
The latching arms 33R, 33L and the support arms 34R, 34L are formed in the substantially equal length. Hence, as is clear from the enlarged view that is FIG. 9A, the leading end parts of the latching arms 33R, 33L and those of the support arms 34R, 34L are located at the substantially consistent position in the lengthwise direction (Y-axis direction). Provided at the leading end parts of the latching arms 33R, 33L and those of the support arms 34R, 34L are protrusions P1, P2 protruding in the direction facing each other. The protrusions P1, P2 are formed in a shape and a dimension that do not allow the main arm 32, the latching arms 33R, 33L, and the support arms 34R, 34L, and the like, to enter a gap C formed between the protrusion P1 and the protrusion P2. Hence, the protrusion P1 and the protrusion P2 prevent the sliding members 30 from getting caught each other at the time of manufacturing and assembling of the connector 1.
FIG. 12 is a perspective view of the sliding member 30 as viewed from the lower side. As illustrated in FIG. 12, a thickened part 38 that is raised up from the lower surface 30a basically planar is formed in the sliding member 30. In FIG. 12, the thickened part 38 is indicated by multiple dots. The thickened part 38 is formed so as to increase the substantial thickness of the sliding member 30, thereby enhancing the strength thereof.
In this embodiment, the thickened part 38 includes a thickened piece 38a formed on the lower surface of the main arm 32, a thickened piece 38b formed on the lower surface of the support arm 34R, and a thickened piece 38c formed on the lower surface of the support arm 34L. As illustrated in FIG. 11B that is a cross-sectional end view taken along a line E-E, the thickened piece 38a of the thickened part 38 is formed so as to be engaged with the engagement part 71a formed in the slide surface 71. Likewise, the thickened pieces 38b, 38c are formed so as to be engaged with the engagement parts 71b, 71c, respectively. Still further, an offset surface 39 that is a plane is formed on each of the thickened pieces 38a to 38c at an offset position in the −Z direction relative to the lower surface 30a. Such offset surface 39 contacts the bottom of each engagement part 71a to 71c, and is slidable over such a bottom.
An explanation will be given of how to engage the outer housing 10 of the connector 1 employing the above structure with the inner housing 20 thereof with reference to FIGS. 13 to 17. As illustrated in FIG. 13, with the protrusion 35 formed at the main arm 32 latching the engagement latch 23 and having a sliding action restricted, the sliding member 30 is attached to the inner housing 20. In addition, as illustrated in FIG. 18A, the sliding member 30 in this stage is located at a first position (initial position) where the locking arms 60R, 60L are not latched by the latches 36 of the latching arms 33R, 33L, respectively, and the locking arms 60R, 60L are tentatively latched by the tentative latches 37.
As illustrated in FIG. 14, when the inner housing 20 is being fitted in the engagement opening 11 of the outer housing 10 together with the sliding member 30 in the fitting direction D1, the engagement latch 23 abuts the engagement catch 13. In addition, the leading end part of the end 40a of each male terminal 40 enters the cylindrical part 51 of each female terminal 50.
As illustrated in FIG. 15, when the inner housing 20 is further fitted in the engagement opening 11 of the outer housing 10, the engagement latch 23 is guided by the inclined surface 13a of the engagement catch 13 together with the protrusion 35 of the sliding member 30. This guiding by the inclined surface 13a causes the locking arms 60R, 60L of the inner housing 20 and the main arm 32 of the sliding member 30 to be deflected. Next, by the depression from the engagement catch 13, as indicated by an arrow A1, the engagement latch 23 and the protrusion 35 are pushed downwardly (−Z side).
As illustrated in FIG. 16, when the inner housing 20 is further fitted in the engagement opening 11 of the outer housing 10, the engagement latch 23 is guided by the parallel surface 13b of the engagement catch 13, thus being moved in the −Y direction together with the protrusion 35 of the sliding member 30 as indicated by an arrow A2.
As illustrated in FIG. 17, when the inner housing 20 is further fitted in the engagement opening 11 of the outer housing 10, the standing-upright surface 23 c of the engagement latch 23 reaches the standing-upright surface 13c of the engagement catch 13. When the standing-upright surface 23c reaches the standing-upright surface 13c, the depression by the engagement latch 13 is canceled, and thus the deflection of the locking arms 60R, 60L is canceled. Next, the engagement latch 23 is returned to the upper side (+Z side) based on the elastic recovery of the locking arms 60R, 60L as indicated by an arrow A3. Consequently, the standing-upright surface 23c and the standing-upright surface 13c face each other, and the engagement catch 13 is latched by the engagement latch 23.
At the time point at which the engagement catch 13 is latched by the engagement latch 23, the protrusion 35 is still being guided by the parallel surface 13b. Hence, the deflection of the main arm 32 is not canceled yet.
Through the above actions, the engagement between the outer housing 10 of the connector 1 and the inner housing 20 thereof completes. In addition, upon completion of the engagement between both the outer and inner housings 10, 20, the fitting of the end 40a of each male terminal 40 into the cylindrical part 51 of each female terminal 50 also completes, and thus each male terminal 40 and each female terminal 50 are electrically connected to each other.
Next, the CPA (Connector Position Assurance) function of the connector 1 will be explained with reference to FIGS. 16 to 20. The initial position of the sliding member 30 in FIG. 18A will be defined as the first position (stand-by position), and the position of the sliding member 30 after the movement illustrated in FIG. 18C will be defined as a second position (engagement locking position).
As illustrated in FIG. 16, when the engagement between both the outer and inner housings 10, 20 has not been fully completed yet, the engagement latch 23 and the engagement catch 13 are not in a latched condition. In addition, the engagement latch 23 as a protrusion catch is latched by the protrusion 35. Hence, the sliding member 30 is in a condition in which the sliding action in the −Y direction is restricted.
As illustrated in FIG. 17, when the engagement between both the outer and inner housings 10, 20 completes, the engagement latch 23 moves upwardly (+Z side) and latches the engagement catch 13. Conversely, when the engagement latch 23 moves upwardly (+Z side), the latching between the protrusion 35 and the engagement latch 23 is released. Hence, the sliding member 30 becomes a condition capable of passing through the slide channel 70 in the −Y direction.
When the engagement between both the outer and inner housings 10, 20 completes, the user who attempts to check the engagement condition between both the outer and inner housings 10, 20 moves the sliding member 30 from the first position (initial position) illustrated in FIG. 18A along the sliding channel 70. Note that the sliding direction D2 of the sliding member 30 is consistent with the −Y direction.
When the sliding member 30 is being slid, as illustrated in FIG. 19, the protrusion 35 of the sliding member 30 moves from the parallel surface 13b of the engagement catch 13 to the lower parallel surface 23d of the engagement latch 23, and is guided by the lower parallel surface 23d, and thus the sliding member 30 is moved in parallel with the −Y direction. In addition, as illustrated in FIG. 18A, when the sliding member 30 is moved in parallel with the −Y direction, the respective latches 36 of the sliding member 30 abut the locking arms 60R, 60L (more specifically, the respective rear-end-side locking arm parts 63R, 63L).
In addition, as illustrated in FIG. 18B, when the sliding member 30 is further slid, the latches 36 are guided by the locking arms 60R, 60L, respectively, and thus the latching arms 33R, 33L are deflected. Still further, the depressions by the locking arms 60R, 60L causes, as indicated by an arrow A4, the gap between the pair of latching arms 33R, 33L to be decreased.
Yet still further, as illustrated in FIG. 18C, when the sliding member 30 is further slid, the latches 36 go over the locking arms 60R, 60L, respectively, and thus the latching arms 33R, 33L are subjected to elastic recovery, and the gap therebetween increases. Hence, the locking arms 60R, 60L are latched by the latching arms 33R, 33L. In addition, as illustrated in FIG. 20, the protrusion 35 goes over the engagement latch 23, and thus the deflection of the main arm 32 is canceled. Still further, based on the elastic recovery by the main arm 32, as indicated by an arrow A5, the protrusion 35 is returned upwardly (+Z side). Consequently, the engagement latch 23 is latched by the protrusion 35.
When the engagement latch 23 is latched by the protrusion 35, the main arm 32 is positioned below (−Z side) the engagement latch 23. Hence, the engagement latch 23 is not capable of moving by what corresponds to the amount necessary to cancel the engagement with the engagement catch 13, thus not capable of moving down to a position for canceling the engagement. Consequently, the engagement between the outer housing 10 and the inner housing 20 is locked by the sliding member 30.
Through the above actions, the movement of the sliding member 30 from the first position (initial position) illustrated in FIG. 18A to the second position (engagement locking position) illustrated in FIG. 18C completes. The user who pushes the sliding member 30 in the second position becomes able to check whether or not the engagement between both the outer and inner housings 10, 20 has completed.
Next, an explanation will be given of how to detach the inner housing 20 of the connector 1 from the outer housing 10 thereof with reference to FIGS. 21 to 25. As illustrated in FIG. 25, the direction in which the inner housing 20 is pulled out from the outer housing 10 (detaching direction D3) is consistent with the +Y direction.
When the engagement between the outer housing 10 and the inner housing 20 is to be canceled, first, the sliding member 30 is moved from the second position (engagement locking position) illustrated in FIG. 23A to the first position (initial position) illustrated in FIG. 23C along a reverse sliding direction D4. Hence, the locking by the sliding member 30 is canceled, and a condition is accomplished in which the engagement between both the outer and inner housings 10, 20 can be canceled. Note that the reverse sliding direction D4 of the sliding member 30 is an opposite direction to the sliding direction D2.
When the sliding member 30 is further slid in the reverse sliding direction D4, as illustrated in FIG. 21, the rear end surface 35a of the protrusion 35 of the sliding member 30 is guided by the engagement latch 23. Next, as is indicated by an arrow A6, the protrusion 35 moves downwardly (−Z side), and thus the main arm 32 of the sliding member 30 is deflected. Consequently, as illustrated in FIG. 22, the latching between the protrusion 35 and the engagement latch 23 is canceled.
In addition, as illustrated in FIG. 23A, when the sliding member 30 is further slid in the reverse sliding direction D4, as illustrated in FIG. 23B, the latches 36 of the sliding member 30 are guided by the respective locking arms 60R, 60L, and thus the latching arms 33R, 33L are deflected. Hence, as indicated by an arrow A7, the gap between the pair of latching arms 33R, 33L is decreased.
Still further, as illustrated in FIG. 23C, when the sliding member 30 is further slid, the latches 36 go over the locking arms 60R, 60L, respectively, the latching arms 33R, 33L are subjected to the elastic recovery, and the gap between the latching arms 33R, 33L increases. Next, the locking arms 60R, 60L are positioned between the respective latches 36 and the respective tentative latches 37, and the locking arms 60R, 60L are tentatively latched by the tentative latches 37, respectively. This tentative latching restricts a further sliding action of the sliding member 30 in the +Y direction.
Yet still further, as illustrated in FIG. 24, when the sliding member 30 is further slid, as indicated by an arrow A8, the protrusion 35 moves from the lower parallel surface 23d of the engagement latch 23 to the parallel surface 13b of the engagement catch 13. Hence, a space where none of members is present is created below the engagement latch 23, and the move-down amount for the engagement latch 23 necessary to fully cancel the latching with the engagement catch 13 is ensured. Consequently, the engagement between both the outer and inner housings 10, 20 can be canceled.
Next, as illustrated in FIG. 25, the latching release 24 of the inner housing 20 is pushed down as indicated by an arrow A9. This causes the locking arms 60R, 60L to be deflected, and as indicated by an arrow A10, the engagement latch 23 is pushed downwardly (−Z side). Consequently, the latching between the engagement latch 23 and the engagement catch 13 is canceled.
Subsequently, the inner housing 20 is moved in the detaching direction D3, and is pulled out from the outer housing 10. Hence, the detachment of the inner housing 20 from the outer housing 10 completes. Note that when the inner housing 20 is detached from the outer housing 10, the deflection of the locking arms 60R, 60L is canceled, and the latching release 24 returns to the original position.
As explained above, according to this embodiment, as illustrated in FIGS. 26A, 26B, the respective second side surfaces 75 of the grooves forming the respective rails 72 are formed at an inclination angle corresponding to the inclination angle of the respective upper surfaces 30b of the support arms 34R, 34L. This enables the support arms 34R, 34L to be engaged with the respective rails 72 while the respective upper surfaces 30b of the support arms 34R, 34L face the respective second side surfaces 75 of the grooves. Accordingly, even if external loads F1, F2 are applied to the connector 1, a detachment of the sliding member 30 from the inner housing 20 is preventable.
When, for example, as illustrated in FIG. 26A, the load F1 is applied to the connector 1 in the vertical direction (Z-axis direction), the upper surface 30b that is the inclined surface abuts the corresponding second side surface 75 of the rail 72 which is the inclined surface having a substantially equal inclination angle. Hence, as is indicated by an arrow A11-1, the support arms 34R, 34L are moved so as to be pushed out to the external side. Consequently, a detachment of the sliding member 30 from the inner housing 20 is prevented.
Conversely, as illustrated in FIG. 26B, when the load F2 is applied to the connector 1 in the horizontal direction (X-axis direction), the upper surface 30b abuts the corresponding second side surface 75 of the rail 72. In addition, because of the inclination of the upper surface 30b, the applied load F2 applied to the support arms 34R, 34L are separated as is indicated by an arrow A11-2. Consequently, a detachment of the sliding member 30 from the inner housing 20 is prevented.
In addition, according to this embodiment, as illustrated in FIG. 27, the respective upper surfaces 30b of the support arms 34R, 34L are formed and inclined in such a way that a direction A12 orthogonal to the upper surface 30b of the support arm 34R and a direction A13 orthogonal to the upper surface 30b of the support arm 34L intersect with each other above the sliding member 30. Hence, an effect of preventing the sliding member 30 from being detached from the inner housing 20 is further enhanced.
An inclination angle θ1 of the upper surface 30b of the support arm 34R and an inclination angle θ2 of the upper surface 30b of the support arm 34L are the same inclination angle. However, the present disclosure is not limited to this structure. The inclination angle θ1 and the inclination angle θ2 may be different inclination angles from each other. However, the inclination angles θ1, θ2 of the upper surfaces 30b are preferably the same inclination angle since, when the external load F1 is applied, the load F1 is separated uniformly, and the upper surfaces 30b can receive the separated load F1 uniformly.
According to this embodiment, as illustrated in FIGS. 6B and 7B, the rails 72 are formed at the opposing surfaces (internal surfaces) to the pair of ribs 25 concaved by what corresponds to the respective ribs 25. Hence, formation of the rails 72 in the inner housing 20 does not result in an increase in size of the connector 1. Consequently, the connector 1 can be downsized while accomplishing the connector position assurance function.
In addition, according to this embodiment, as illustrated in FIG. 10A, the support arms 34R, 34L each include the first support arm part 34A and the second support arm part 34B. Conversely, the rails 72 include the first rail part 72A to be engaged with the first support arm part 34A, and the second rail part 72B to be engaged with the second support arm part 34B. Accordingly, since the inner housing 20 and the sliding member 30 have two engagement components, the effect of preventing the sliding member 30 from being detached from the inner housing 20 is further enhanced.
Still further, according to this embodiment, as illustrated in FIG. 28, formed at the respective leading end parts of the latching arms 33R, 33L and the support arms 34R, 34L are protrusions P1, P2 protruding in the direction facing each other. The protrusions P1, P2 are formed in a shape and in a dimension that do not allow each arm (the main arm 32, the latching arms 33R, 33L, and the support arms 34R, 34L) of the sliding member 30 to enter the gap C formed between the protrusions P1, P2. Hence, each arm of other sliding member 30 is prevented from entering a space between the latching arms 33R, 33L and the support arms 34R, 34L. Accordingly, the sliding member 30 is prevented from getting caught each other at the time of manufacturing and assembling of the connector 1.
Yet still further, according to this embodiment, as illustrated in FIG. 29, the guide surfaces G1 are formed at the leading end parts of the latching arms 33R, 33L. Likewise, the guide surfaces G2, G3 are also formed at the leading end parts of the support arms 34R, 34L. Hence, the fitting of the sliding member 30 into the inner housing 20 is guided, improving the fitting easiness. For example, when the sliding member 30 is attached to the inner housing 20, the respective leading end parts of the latching arms 33R, 33L, and of the support arms 34R, 34L may contact the locking arms 60R, 60L. In this case, even if such leading end parts are in contact with the locking arms 60R, 60L, those leading end parts are guided by the guide surfaces G1 to G3, while at the same time, the sliding member 30 is fitted in the slide channel 70. Next, this sliding member 30 is guided to the first position that is a normal attachment position by the actions of the guide surfaces G1 to G3. Since the fitting of the sliding member 30 into the inner housing 20 is guided, the fitting easiness is improved, and thus the assembling workability is improved.
Moreover, according to this embodiment, as illustrated in FIG. 30, the rails 72 are formed with the guide surfaces G4 inclined relative to the Y-axis direction. Hence, when the sliding member 30 is attached to the inner housing 20, the sliding member 30 is fitted in the slide channel 70 while the leading end parts of the support arms 34R, 34L are being guided by the guide surfaces G4. The sliding member 30 is guided to the first position that is the normal attachment position by the action of the guide surfaces G4. Since the fitting of the sliding member 30 into the inner housing 20 is guided, the fitting easiness is improved, and thus the assembling workability is improved.
The embodiment of the present disclosure has been explained above, but the present disclosure is not limited to the above embodiment.
For example, according to the above embodiment of the present disclosure, the outer housing 10 is the housing of a receptacle connector to be mounted on the wiring board S, while the inner housing 20 is the housing of a plug connector to be connected with the wiring W. However, the present disclosure is not limited to this structure. For example, both the connectors may include respective terminals, and the wirings W may be connected thereto.
In the above embodiment, the respective upper surfaces 30b of the support arms 34R, 34L are each a flat and smooth inclined surface. However, the present disclosure is not limited to this structure. As illustrated in FIG. 31, the respective upper surfaces 30b of the support arms 34R, 34L may be each a curved inclined surface. In addition, the upper surface 30b may be a combination of an inclined surface part that is a flat and smooth surface with an inclined surface part that is a curved surface. The term “inclined surface” in the appended claims covers a flat and smooth inclined surface, a curved inclined surface, or the combination thereof.
In the above embodiment, although the respective upper surfaces 30b of the support arms 34R, 34L are inclined surfaces and the lower surfaces 30a are parallel surfaces to the slide surface 71, the present disclosure is not limited to this structure. As illustrated in FIG. 32, both the upper surface 30b and the lower surface 30a may be respective inclined surfaces.
In the above embodiment, although the protrusions P1, P2 are formed at all leading end parts of the latching arms 33R, 33L, and the support arms 34R, 34L. However, the present disclosure is not limited to this structure. For example, only either one of the protrusions P1, P2 may be formed as long as such a single protrusion is formed in a shape and in a dimension that do not allow each arm, and the like, of the sliding member 30 to enter the gap C between the leading end parts of the latching arms 33R, 33L and the leading end parts of the support arms 34R, 34L.
The foregoing describes some example embodiments for explanatory purposes. Although the foregoing discussion has presented specific embodiments, persons skilled in the art will recognize that changes may be made in form and detail without departing from the broader spirit and scope of the invention. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense. This detailed description, therefore, is not to be taken in a limiting sense, and the scope of the invention is defined only by the included claims, along with the full range of equivalents to which such claims are entitled.

## Claims

1. A group of mating connectors comprising:
a first housing;
a second housing comprising a protrusion catch, a slide channel, and a rail formed as a groove along the slide channel, the second housing being to be engaged with the first housing; and
a sliding member comprising a support arm to be engaged with the rail upon engagement with the groove, and a protrusion to latch the protrusion catch, the sliding member being placed in the slide channel,
wherein:
the slide channel is formed with a slide surface extended along the rail;
the support arm comprises a first surface facing the slide surface, and a second surface formed at a back side of the first surface, and inclined relative to the slide surface;
the groove is formed as a recess that includes a bottom surface, a first side surface, and a second side surface;
the second side surface faces the second surface of the support arm, and is formed at an inclination angle corresponding to an inclination angle of the second surface; and
when the first housing and the second housing are engaged with each other, the first housing depresses the protrusion latching the protrusion catch of the second housing to cancel a latching between the protrusion catch and the protrusion, enabling the sliding member to be slidable.

2. The group of mating connectors according to claim 1, wherein:
the second housing comprises a pair of ribs formed along a direction in which the slide channel extends; and
the groove is formed in each of the pair of ribs.

3. The group of mating connectors according to claim 1, wherein:
the sliding member comprises a pair of the support arms; and
the second surface of the support arm is formed so as to be inclined in a direction in which the pair of support arms face each other.

4. The group of mating connectors according to claim 1, wherein a leading end part of the support arm is formed with a guide surface that guides the sliding member into the groove.

5. The group of mating connectors according to claim 1, wherein:
the support arm comprises a first support arm part, and a second support arm part extending from an end of the first support arm part, and having a smaller lateral cross-sectional area than a lateral cross-sectional area of the first support arm part; and
the rail comprises a first rail part to be engaged with the first support arm part, and a second rail part to be engaged with the second support arm part.

6. The group of mating connectors according to claim 1, wherein:
a catch is disposed at the slide channel; and
the sliding member comprises a latching arm including a latch to latch the catch.

7. The group of mating connectors according to claim 6, wherein:
a leading end part of the support arm and a leading end part of the latching arm are located at a same position in a lengthwise direction; and
a protrusion protruding in a direction in which the support arm and the latching arm face each other is formed on a leading end part of at least either the support arm and the latching arm.

8. The group of mating connectors according to claim 6, wherein a guide surface that guides the sliding member into the slide channel is formed at a leading end part of the latching arm.

9. The group of mating connectors according to claim 1, wherein:
the first housing comprises an engagement catch; and
the second housing comprises an engagement latch to latch the engagement catch, and also serving as the protrusion catch.

10. The group of mating connectors according to claim 1, wherein the respective first and second housings are housings of the mating connectors that comprise a terminal connected to a wiring.