BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A is a cross-sectional view of a connector assembly in accordance with a first embodiment of the present invention.
FIG. 1B is a plan view of the connector assembly of FIG. 1A.
FIG. 1C is a side view of the connector assembly of FIG. 1A.
FIG. 2 is a perspective view of the connector assembly of FIG. 1A.
FIG. 3 is an exploded perspective view of an attachment member of the connector assembly of FIG. 1A.
FIG. 4 is an exploded cross view of the attachment member of the connector assembly of FIG. 1A.
FIG. 5 is a perspective view of a connector assembly in accordance with a second embodiment of the present invention.
FIG. 6 is a cross-sectional view of the connector assembly of FIG. 5.
FIG. 7 is a cross-sectional view of a substantial part of the connector assembly of FIG. 5.
FIG. 8 is an enlarged cross-sectional view of a holder of the connector assembly of FIG. 5.
FIG. 9 is an exploded perspective view of an attachment member of the connector assembly of FIG. 5.
FIG. 10 is a partly cutaway perspective view of a cover of the connector assembly of FIG. 5.
FIG. 11 is a view showing a separator of the connector assembly of FIG. 5.
FIG. 12 is a view for explaining an attachment state of the cover of the connector assembly of FIG. 5.
FIG. 13 is a view for explaining a deformation of the cover of the connector assembly of FIG. 5.
FIG. 14 is a side view of the connector assembly of FIG. 5.
FIG. 15A is a view for explaining a deformation of a connection member of the connector assembly of FIG. 5.
FIG. 15B is a view for explaining a deformation of the connection member of the connector assembly of FIG. 5.
FIG. 16 is a cross-sectional view of a connector assembly of a prior art.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
First Embodiment
FIGS. 1A, 1B, 1C, and 2 show a connector assembly in accordance with a first embodiment of the present invention. The connector assembly is a connector assembly for electrical connection between two printed circuit boards P1 and P2 arranged side by side, and it comprises a pair of receptacles 1 configured to be mounted on each printed circuit board, respectively, and an attachment member 2 connected to the pair of receptacles 1 so as to electrically connect between the pair of receptacles 1.
Each receptacle 1 comprises a housing 10 made from an insulating material e.g. a synthetic resin and fixed on one of the printed circuit boards, and a plurality of substrate terminals 11 made from a conductive material and electrically connected to an electrical circuit (not shown) on the printed circuit board.
The housing 10 has a rectangular parallelepiped shape, and has a groove-like connection concave portion 10a along a longitudinal direction thereof. The housing 10 is disposed on one of the printed circuit board so that the longitudinal direction thereof becomes perpendicular to an arranging direction of the two printed circuit boards P1 and P2. The housing 10 has side walls 10b, 10c on both sides of the connection concave portion 10a along its longitudinal direction, and a plurality of grooves 10d, in which the substrate terminals 11 are disposed, are formed in the side walls 10b and 10c from the inside thereof to the outside. The housing 10 has positioning protrusions 10e on the undersurface thereof, and the position of the housing 10 with respect to the printed circuit board is decided by inserting the positioning protrusions 10e into holes formed in the printed circuit board.
Each substrate terminal 11 is formed from a metal plate by punching process and bending process, and it has a held section 11a which has an inverted U-shaped configuration and which is inserted into one of the grooves 10d, a contact 11b which has elasticity and is extended from an end on the connection concave portion 10a side of the held section 11a and runs upward in the connection concave portion 10a, and a terminal section 11c which is extended from an outside end of the held section 11a to the outside of the housing 10 and is soldered to the electrical circuit on the printed circuit board. The substrate terminals 11 are arranged in the grooves 10d of the side walls 10b and 10c of the housing 10 so that they face each other. As a result, as shown in FIG. 1B, the plurality of substrate terminals 11 are arranged on both sides of the housing 10 in the direction perpendicular to the arranging direction of the two printed circuit boards P1, P2.
As shown in FIGS. 3 and 4, the attachment member 2 comprises a pair of holders 20 which can be coupled to the pair of receptacles 1 and a plurality of connection members 21 which are made from a conductive material and connect between the pair of holders 20 electrically.
Each holder 20 has a connection convex portion 20a which can be inserted into the connection concave portion 10a of the receptacle 1. A plurality of holding grooves 20b, which are for holding after-mentioned connection terminals 201, 211 of the connection members 21, are formed on both sides of the connection convex portion 20a in the longitudinal direction thereof. Furthermore, on both longitudinal ends of the connection convex portion 20a, grip portions 20c projecting in the width direction (a direction perpendicular to the longitudinal direction) are formed. A user can grip the grip portions 20c to attach or detach the holder 20 to or from the receptacle 1. The grip portions 20c are connected to each other by a beam 20d. By the beam 20d, the mechanical strength of the holder 20 can be increased, and after-mentioned connection terminals 202 can be protected.
The connection members 21 comprise a plurality of first connection members 21a and a plurality of second connection members 21b. The first connection members 21a are for connecting between the substrate terminals 11 arranged on a side of each housing 10 which is near the opposite housing 10 out of the substrate terminals 11 arranged on both sides of the housing 10, and the second connection members 21b are for connecting between the substrate terminals 11 arranged on a side of each housing 10 which is far from the opposite housing 10 out of the substrate terminals 11 arranged on both sides of the housing 10. Each first connection member 21a has a link section 200 which is disposed between the pair of holders 20 and connection terminals 201 formed at both ends of the link section 200. Each of the connection terminals 201 is held by the holder 20 and comes into contact with one of the substrate terminals 11 when the pair of holders 20 is coupled to the pair of receptacles 1. In a similar way, each second connection member 21b has a link section 210 which is disposed between the pair of holders 20 and connection terminals 211 formed at both ends of the link section 210. Each of the connection terminals 211 is also held by the holder 20 and comes into contact with one of the substrate terminals 11 when the pair of holders 20 are coupled to the pair of receptacles 1.
Each connection terminal 201 of the first connection member 21a has a generally U-shaped configuration, and it comprises a held section 201a, which is extended downward (in FIG. 4) from an end of the link section 200 and is pressed into the holding groove 20b of the holder 20, and a contact 201b, which has elasticity and is extended from an end of the held section 201a toward the link section 200 side (namely, to the inside of the first connection member 21a) and runs upward (in FIG. 4). Protrusions 201c are formed on both sides of the held part 201a, and they are engaged into the inner surface of the holding groove 20b when the held section 201a is pressed into the holding groove 20b, whereby the connection terminal 201 can be prevented from dropping from the holding groove 20b.
Each connection terminal 211 of the second connection member 21b has a generally U-shaped configuration, and it comprises a held section 211a, which is extended downward (in FIG. 4) from an end of the link section 200 and is pressed into the holding groove 20b of the holder 20, and a contact 211b which has elasticity and is extended from an end of the held section 211a to the opposite side of the link section 200 (namely, to the outside of the first connection member 21b) and runs upward (in FIG. 4). Protrusions 211c are formed on both sides of the held part 211a, and they are engaged into the inner surface of the holding groove 20b when the held section 201a is pressed into the holding groove 20b, whereby the connection terminal 211 can be prevented from dropping from the holding groove 20b.
As shown in FIG. 4, a midsection of the link section 200 of the first connection member 21a is bent into an inverted U-shaped configuration in the thickness direction of the printed circuit boards P1, P2, whereby a spring section 202 for allowing change of a distance between the connection terminals 201 is formed. In a similar way, a midsection of the link section 210 of the second connection member 21b is bent into an inverted U-shaped configuration in the thickness direction of the printed circuit boards P1, P2, whereby a spring section 212 for allowing change of a distance between the connection terminals 211 is formed. That is, by elastic deformation of the spring sections 202 and 212, misalignment between the printed circuit boards P1, P2 and/or between the pair of receptacles 1 in the arranging direction of the two printed circuit boards can be absorbed.
When the first connection members 21a and the second connection members 21b are connected to the holders 20, the link section 200 of each of the first connection members 21a is disposed nearer to the printed circuit boards P1, P2 than the link section 210 of each of the second connection members 21b in the thickness direction of the printed circuit boards, as shown in FIG. 2. In other words, the link section 200 of each first connection member 21a is disposed below the link section 210 of each second connection member 21b. By disposing the link section 200 of each first connection member 21a below the link section 210 of each second connection member 21b, the first connection member 21a and the second connection member 21b do not interfere with each other, whereby it is possible to arrange many connection members 21 along the longitudinal direction of the holder 20.
In this embodiment, the attachment member further comprises a spacer 22 which is made from an insulating material and is disposed between the link section 200 of each of the first connection members 21a and the link section 210 of each of the second connection members 21b to separate between them (in other words, to separate the link section 200 of each of the first connection members 21a and the link section 210 of each of the second connection members 21b from each other). By providing the spacer 22, it is possible to ensure electric insulation between the link section 200 of each of the first connection members 21a and the link section 210 of each of the second connection members 21b. As shown in FIG. 4, the spacer 22 has injection grooves 22a in which the link sections 200 of the first connection members 21a are respectively pressed and fixed in the surface on the printed circuit boards P1 and P2 side, and the spacer 22 has slide grooves 22b which hold slidably the link sections 210 of the second connection members 21b in a surface opposite to the surface in which the injection grooves 22a were formed. That is, the width of each injection groove 22a is roughly equal to the width of the link section 200 of the first connection member 21a, and the width of each slide groove 22b is slightly larger than the width of the link section 210 of the second connection member 21b. By forming the slide grooves 22b in the spacer 22 in addition to the injection grooves 22a, it becomes possible for the link sections 210 of the second connection members 21b to move in the vertical and the horizontal directions in FIG. 4 while ensuring the electrical isolation between the link sections 200 and the link sections 210. Therefore, the spacer does not interfere with elastic deformation of the connection members 21.
The attachment member 2 constituted as above is connected to the pair of receptacles 1 by inserting the connection convex portion 20a of each holder 20 into the connection concave portion 10a of each housing 10. At this time, the contacts 11b of the substrate terminals 11 of the receptacles 1 and the contacts 201b and 211b of the connection terminals 201 and 211 of the attachment member 2 come into contact with each other while elastically deforming. Each of the contacts 201b and 211b of the attachment member 2 has a concave portion 201d, 211d, respectively, in the tip thereof (see FIG. 4), and on the other hand, each of the contacts 11b of the receptacles 1 has a protrusion 11d (see FIG. 1A) in the tip thereof, and each protrusion 11d drops in each concave portion 201d or 211d when each contact 201b and 211b and each contact 11b are connected to each other, whereby the user can get a click feeling. Furthermore, because the protrusions 11d and the concave portions 201d, 211d are engaged with each other, it is prevented that the connection convex portion 20a drops from the connection concave portion 10a.
As shown in FIG. 2, convex steps 20e are formed on the undersurface of each of the grip portions 20c of each holder 20, and concave steps 10f are formed on the upper surface of the housing 10 of each receptacle 1 at the longitudinal both ends thereof, and the convex steps 20e are engaged with the concave steps 10f to prevent misalignment of the holder 20 with respect to the housing 10 in the longitudinal direction of the housing 10. Furthermore, as shown in FIG. 1B, positioning concave portion 20f is formed in the undersurface of each of the grip portions 20c, and positioning protrusions 10g are formed on the upper surface of each of the housings 10 in the longitudinal both ends thereof, and the position of the holder 20 is decided with respect to the housing 10 by inserting the positioning protrusions 10g into the positioning concave portions 20f.
In the connector assembly constituted as above, it is possible to easily connect two printed circuit boards P1 and P2 arranged side by side to each other by attaching the attachment member 2 in which the pair of holders 20 are connected to each other by the connection members 21 to the pair of receptacles 1 along the thickness direction of the printed circuit boards, even when the two printed circuit boards P1 and P2 are arranged on e.g. a case (not shown) side by side and are fixed thereto. Furthermore, in this connector assembly, it is possible to absorb misalignment between the printed circuit boards P1, P2 or between the pair of receptacles 1 by the elastic deformation of the spring sections 202 and 212 of the link sections 200 and 210 of the attachment member 2.
In addition, in this embodiment, as shown in FIG. 4, the holding grooves 20b (hereinafter, called first holding grooves) of the holder 20 into which the connection terminals 201 of the first connection members 21a are pressed and the holding grooves 20b (hereinafter, called second holding grooves) into which the connection terminals 211 of the second connection members 21b are pressed are both opened in a direction in which the holders 20 are removed from the receptacles 1 (that is, in the upward direction in FIG. 4). Therefore, it is possible to assemble the attachment member 2 easily by attaching the first connection members 21a to the holders 20 in the direction shown by an arrow A1, and then attaching the spacer 22 to the first connection members 21a in the direction shown by an arrow A2, and then attaching the second connection members 21b to the spacer 22 and the holders 20 in the direction shown by an arrow A3. Or, the first holding grooves 20b of the holder 20 into which the connection terminals 201 of the first connection members 21a are pressed may be opened in a direction in which the holders 20 are attached to the receptacles 1 (that is, in a downward direction in FIG. 4), and the first connection members 21a may be attached to the holders 20 from below. That is, in a case where the first holding grooves are opened in a common direction between the pair of holders 20 and the second holding grooves are opened in a direction in which the holders 20 are removed from the receptacles 1 in both holders 20, it is possible to assemble the attachment member 2 easily by attaching the first and second connection members 21a and 21b to the holders 20 in the thickness direction of the printed circuit boards P1 and P2.
As to the spacer 22, the spacer 22 may be configured so that the second connection members 21b are pressed in the injection grooves 22a and the first connection members 21a are disposed in the slid grooves 22b.
In addition, the connection convex portion 20a may be formed in the housing 10, and the connection concave portion 10a may be formed in the holder 20. The connection concave portion 10a may be penetrated in the vertical direction.
In addition, the spring section 202 of each first connection member 21a and the spring section 212 of each second connection member 21b may be curved in the thickness direction of the printed circuit boards.
Second Embodiment
FIGS. 5 and 6 show a connector assembly in accordance with a second embodiment of the present invention. The basic composition of this embodiment is identical to the first embodiment, so similar parts to the first embodiment are identified by the same reference character and no duplicate explanation is made here.
The connector assembly is a connector assembly for electrical connection between two printed circuit boards P1 and P2 arranged side by side, and it comprises a pair of receptacles 1′ configured to be mounted on each printed circuit board, respectively, and an attachment member 2′ connected to the pair of receptacles 1′ so as to electrically connect between the pair of receptacles 1′, and a cover 3 made from an insulating material and fixed to a pair of holders 20′ of the attachment member 2′.
Each receptacle 1′ comprises a housing 10′ made from an insulating material e.g. a synthetic resin and fixed on one of the printed circuit boards, and a plurality of substrate terminals 11′ made from a conductive material and electrically connected to an electrical circuit (not shown) on the printed circuit board.
The housing 10′ has a rectangular parallelepiped shape, and has a groove-like connection concave portion 10a′ (see FIG. 7) along a longitudinal direction thereof. The housing 10 is disposed on one of the printed circuit boards so that the longitudinal direction thereof becomes perpendicular to an arranging direction of the two printed circuit boards P1 and P2. As shown in FIG. 7, the housing 10 has side walls 10b′ and 10c′ on both sides of the connection concave portion 10a′ along its longitudinal direction, and a plurality of grooves 10d′, in which the substrate terminals 11′ are disposed, are formed inside the side walls 10b′, 10c′.
Each substrate terminal 11′ has a linear held section 11a′ held by one of the grooves 10d′, a contact 11b′ which has elasticity and is extended from a top end of the held section 11a′ and runs downward in the connection concave portion 10a′, and a terminal section 11c′ which is extended from an outside end of the held section 11a′ to the outside of the housing 10′ and which is soldered to the electrical circuit on the printed circuit board. The substrate terminals 11′ are arranged in the grooves 10d′ of the side walls 10b′ and 10c′ of the housing 10′ so that they face each other. As a result, the plurality of substrate terminals 11′ are arranged on both sides of the housing 10′ in the direction perpendicular to the arranging direction of the two printed circuit boards P1, P2.
As shown in FIG. 6, the attachment member 2′ comprises a pair of holders 20′ which can be coupled to the pair of receptacles 1′ and a plurality of connection members 21′ which are made from a conductive material and connect between the pair of holders 20′ electrically.
As shown in FIG. 8, each holder 20′ has a connection convex portion 20a′ which can be inserted into the connection concave portion 10a′ of the receptacle 1′. A plurality of holding grooves 20b′, which are for holding after-mentioned connection terminals 201′, 211′ of the connection member 21′, are formed on both sides of the connection convex portion 20a′ in the longitudinal direction thereof. Each holding groove 20b′ formed in one surface of the connection convex portion 20a′ (a surface near the opposite holder 20′) is communicated with a slit-like concave portion 20g formed in the upper part of the holder 20′ through a through hole 20h. Each holding groove 20b′ formed in the other surface of the connection convex portion 20a′ (a surface far from the opposite holder 20′) is communicated with an upper surface of the holder 20′ through a through hole 20i.
As shown in FIG. 9, protrusions 20j as second engagement parts for secure the cover 3 are formed on both longitudinal ends of each holder 20′. The upper surface of each protrusion 20j slops downward so as to attach the cover 3 smoothly.
As shown in FIGS. 6, 7, and 9, the connection members 21′ comprise a plurality of first connection members 21a′ and a plurality of second connection members 21b′. The first connection members 21a′ are for connecting between the substrate terminals 11′ arranged on a side of each housing 10′ which is near the opposite housing 10′ out of the substrate terminals 11′ arranged on both sides of the housing 10′, and the second connection members 21b′ are for connecting between the substrate terminals 11′ arranged on a side of each housing 10′ which is far from the opposite housing 10′ out of the substrate terminals 11′ arranged on both sides of the housing 10′. Each first connection member 21a′ has a link section 200′ which is disposed between the pair of holders 20′ and connection terminals 201′ formed at both ends of the link section 200′. The connection terminals 201′ are held by the holder 20′ and come into contact with the substrate terminals 11′ when the pair of holders 20′ is coupled to the pair of receptacles 1′. In a similar way, each second connection member 21b′ has a link section 210′ which is disposed between the pair of holders 20′ and connection terminals 211′ formed at both ends of the link section 210′. The connection terminals 211′ are also held by the holders 20′ and come into contact with the substrate terminals 11′ when the holders 20′ are coupled to the receptacles 1′.
Each connection terminal 201′ of the first connection member 21a′is linear, and it is disposed in one of the holding grooves 20b′ of the holder 20′ through the slit-like concave portion 20g and the through hole 20h. That is, the connection terminals 201′ of the first connection members 21a′ are disposed in the holding grooves 20b′ on a side near the opposite holder 20′. Each connection terminal 211′ of the second connection member 21b′ is also linear and is disposed in one of the holding groove 20b′ of the holder 20′ through the through hole 20i. That is, the connection terminals 211′ of the second connection members 21b′ are disposed in the holding grooves 20b′ on a side far from the opposite holder 20′.
As shown in FIG. 9, a midsection of the link section 200′ of the first connection member 21a′ is bent into a generally U-shaped configuration in the thickness direction of the printed circuit boards P1, P2, whereby a spring section 202′ for allowing change of a distance between the connection terminals 201′ is formed. In a similar way, a midsection of the link section 210′ of the second connection member 21b′ is bent into a generally U-shaped configuration in the thickness direction of the printed circuit boards P1, P2, whereby a spring section 212′ for allowing a change of a distance between the connection terminals 211′ is formed. That is, by elastic deformation of the spring sections 202′ and 212′, misalignment between the printed circuit boards P1, P2 and/or between the pair of receptacles 1 in the arranging direction of the two printed circuit boards can be absorbed.
When the first connection members 21a′ and the second connection members 21b′ are connected to the holders 20′, the link section 200′ of each of the first connection members 21a′ is disposed nearer to the printed circuit boards P1, P2 than the link section 210′ of each of the second connection member 21b′ in the thickness direction of the printed circuit boards, as shown in FIG. 6. In other words, the link section 200′ of each first connection member 21a′ is disposed below the link section 210′ of each second connection member 21b′. By disposing the link section 200′ of each first connection member 21a′ below the link section 210′ of each second connection member 21b′, the first connection member 21a′ and the second connection member 21b′ do not interfere with each other, whereby it is possible to arrange many connection members 21′ along the longitudinal direction of the holder 20′.
As shown in FIG. 10, the cover 3 is made from a transparent or half-transparent insulating material and is molded into a box shape opened downward. A pair of openings 30 and a pair of openings 31 as a first engagement parts are formed in a pair of opposed side walls 3a of the cover 3. As shown in FIG. 14, each opening 30 and 31 are formed so that each protrusion 20j of the holders 20′ as the second engagement part is disposed in each opening 30 and 31 when the cover 3 is attached to the holders 20′. The opening 30 has a width L1, which is slightly larger than a width W of the protrusion 20j of the holder 20′, and the opening 31 has a width L2, which is sufficiently larger than the width W of the protrusion 20j.
As shown in FIG. 10, the lower end of the side wall 3a has oblique surfaces 32 which, respectively, slope inward under the opening 30 and the opening 31. The oblique surfaces 32 come in contact with edges of the upper surfaces of the holders 20′ when the cover 3 is attached to the holders 20′, whereby it becomes easy to position the cover 3 with respect to the holders 20′. Furthermore, by these oblique surfaces 32, it becomes easy for the side walls 3a of the cover 3 to climb over the protrusions 20j of the holders 20′ when the cover 3 is attached to the holders 20′. Furthermore, at each corner of the upper surface of the cover 3, a holding protrusion 33 is formed for easier holding of the cover 3.
As shown in FIG. 10, inside the cover 3, a vertical wall 34 is integrally molded with the cover 3 between the centers of the side walls 3a. A comb separator 35 which is disposed between each adjacent connection members 21′ is formed at the lower end of the vertical wall 34 to separate between the adjacent connection members 21′. That is, as shown in FIG. 11, when the cover 3 is attached to the holders 20′, each of the link sections 200′ of the first connection members 21a′ and each of the link sections 210′ of the second connection members 21b′ are disposed in a slit 35a formed between the separators 35 in a spaced relation to each other, and the link sections 200′ of the adjacent first connection members 21a′ and the link sections 210′ of the adjacent second connection members 21b′ are separated by the separator 35. By the separator 35, it is prevented that the adjacent connection members 21′ come in contact with each other.
Furthermore, in the top board of the cover 3, generally U-shaped gaps 36 are formed at the both sides of the vertical wall 34. These gaps 36 define an elastic deformation part 37, which is capable of deforming elastically to allow displacement between the two printed circuit boards P1 and P2.
In the connector assembly of this embodiment constituted as above, in order to electrically connect between the two printed circuit boards P1 and P2 arranged side by side, first, each receptacle 1′ is mounted on each printed circuit board P1, P2, and the connection convex portion 20a′ of each holder 20′ of the attachment member 2′ is inserted into the connection concave portion 10a′ of each housing 10′. By this, the contacts 11b′ of the substrate terminals 11′ of the receptacles 1′ and the connection terminals 201′ and 211′ of the attachment member 2′ are connected to each other.
Then, the cover 3 is attached to both the holders 20′. As shown in FIG. 12, when the cover 3 is attached to the holders 20′, the oblique surfaces 32 formed at the lower end of the side walls 3a of the cover 3 come in contact with the edges of the upper surfaces of the holders 20′, whereby misalignment between the cover 3 and the holders 20′ is corrected. When the cover 3 is further pressed down from this state, the oblique surfaces 32 come into contact with the sloped upper surfaces of the protrusions 20j of the holders 20′ as indicated by a chain double-dashed line in FIG. 12, whereby the side walls 3a of the cover 3 elastically deform outward. When the openings 30 and 31 of the cover 3 reach the protrusions 20j of the holders 20′, the side walls 3a of the cover 3 return to the original state, and as indicated by a full line in FIG. 12, the openings 30 and 31 (that is, the first engagement parts) and the protrusions 20j (that is, the second engagement parts) are engaged with each other. At this time, the undersurface of the top board of the cover 3 comes in contact with the upper surfaces of the holders 20′. As a result, the cover 3 is fixed to the holders 20′ in a condition where the cover 3 covers the connection members 21′ and both receptacles 1′. By covering the connection members 21′ and both receptacles 1′ by the cover 3 as above, it is prevented that a user carelessly touches the connection members 21′ or environmental dusts adhere to the connection members 21′. By this, it is possible to increase insulation properties of the connection members 21′.
When the cover 3 is detached from the receptacles 1′, the attachment member 2′ is also detached from the receptacles 1′ with the cover 3. Because the attachment member 2′ is detached from the receptacles 1′ while maintaining the positional relation between the pair of holders 20′, the first connection members 21a′ and the second connection members 21b′ are prevented from being strained, and the deformations of them are prevented.
By the way, it is also possible to attach the attachment member 2′ to which the cover 3 has already attached, to the receptacles 1′. When the attachment member 2′ is attached to the receptacles 1′ with the cover 3, the positional relation between the printed circuit boards P1 and P2 may be shorter than predetermined positional relation between them in the X direction of FIG. 5, namely, in the arranging direction of the two printed circuit boards P1 and P2. In such a case, when the holders 20′ of the attachment member 2′ were attached to the receptacles 1′, as shown in FIG. 15A, the degree of flexion of the spring sections 202′ of the first connection members 21a′ and the degree of flexion of the spring sections 212′ of the second connection members 21b′ are increased, and the link sections 200′ and 210′ are curved upward. By this, it is possible to attach each holder 20′ to each receptacle 1′ easily. Because, as shown in FIG. 14, the opening 31 of the cover 3 has the width L2 which is sufficiently larger than the width W of the protrusion 20j, even when the cover 3 is attached to the attachment member 2′, the reduction of the distance between the pair of holders 20′ (namely, approximation of the pair of holders 20′) is allowed. By this, it is prevented that excessive force is added to the holders 20′ coupled to the receptacles 1′ by the cover 3.
Or, when the attachment member 2′ is attached to the receptacles 1′ with the cover 3, the positional relation between the printed circuit boards P1 and P2 may be longer than predetermined positional relation between them in the X direction of FIG. 5. In such a case, when the holders 20′ of the attachment member 2′ were attached to the receptacles 1′, as shown in FIG. 15B, the degree of flexion of the spring sections 202′ of the first connection members 21a′ and the degree of flexion of the spring sections 212′ of the second connection members 21b′ are decreased. By this, it is possible to attach each holder 20′ to each receptacle 1′ easily. In this case, too, because the opening 31 of the cover 3 has the width L2 which is sufficiently larger than the width W of the protrusion 20j, even when the cover 3 is attached to the attachment member 2′, the increase of the distance between the two holders 20′ is allowed.
Or, when the attachment member 2′ is attached to the receptacles 1′ with the cover 3, the positional relation between the printed circuit boards P1, P2 may be misaligned from predetermined positional relation between them in the Y direction of FIG. 5, namely, in the direction perpendicular to the arranging direction of the two printed circuit boards P1 and P2. In such a case, as shown in FIG. 13, the elastic deformation part 37 of the cover 3 elastically deforms, whereby the misalignment of the both holders 20′ is allowed. Because the adjacent connection members 21′ are separated from each other by the comb separator 35, it is prevented that the adjacent connection members 21′ come in contact with each other.
As mentioned above, in the connector assembly of this embodiment, it is possible to easily connect two printed circuit boards P1 and P2 arranged side by side to each other by inserting each holder 20′ of the attachment member 2′ into each receptacle 1′ along the thickness direction of the printed circuit boards, even when the two printed circuit boards P1 and P2 are arranged on e.g. a case (not shown) side by side and are fixed thereto. Furthermore, it is possible to absorb misalignment between the printed circuit boards P1, P2 or between the pair of receptacles 1′ by elastically deforming the spring sections 202′ and 212′ of the link sections 200′ and 210′ of the attachment member 2.
In addition, as a substitute for the protrusions 20j of the holders 20′, the receptacles 1′ may have similar protrusions, and the cover 3 may be attached to the pair of receptacles 1′.
The shape of the elastic deformation part 37 is not limited to the shape of the present invention.
Patent Application
20070298641
