Floating connector

Abstract

To provide a floating connector of a lateral direction fitting type, having a construction that a power supply contact on an upper side and a lower side can be appropriately elastically deformed at the time of a floating movement of a movable housing, and each conductive resistance value of the power supply contact on the upper side and the lower side becomes equal each other.SOLUTION: A power supply receptacle contact on an upper side 50A and a power supply receptacle contact on a lower side 50B include slits 59 and 69 that are penetrated to a plate thickness direction in an intermediate part of a whole length each other, and are extended to each length direction. In a part where the slits 59 and 69 are formed, they are divided into a cross direction by the slits 59 and 69. Both of the power supply receptacle contact on the upper side 50A and the power supply receptacle contact on the lower side 50B are formed so that each whole length becomes the same length, and the length of the part where the slits 59 and 69 are formed becomes the same length.SELECTED DRAWING: Figure 15

Description

[Technical field]

[0001] The present invention relates to a floating connector used for electrical connection between boards. [Background technology]

[0002] This type of floating connector is configured, for example, to include a fixed housing fixed on a substrate (circuit board), a movable housing that can be mated with a mating connector, and multiple contact members held across both the fixed housing and the movable housing. In order to absorb misalignment between the substrates and misalignment of the mating position with the mating connector, the movable housing is configured to be able to move relative to the fixed housing (also referred to as "floating movement of the movable housing") due to elastic deformation of the contact members.

[0003] Known floating connectors with this configuration include a type in which the movable housing mates with the mating connector in a direction perpendicular to the board surface to which the fixed housing is fixed (also called a "vertical mating type floating connector"), and a type in which the movable housing mates with the mating connector in a direction parallel to the board surface to which the fixed housing is fixed (also called a "horizontal mating type floating connector").

[0004] A vertically mating floating connector is known that includes a plurality of pairs of signal contacts for signal transmission and a plurality of pairs of power contacts for power transmission (see, for example, Patent Document 1). In this vertically mating floating connector, each pair of signal contacts is composed of two contact members that form a pair with each other (for convenience, one contact member is referred to as the "right-side signal contact" and the other contact member is referred to as the "left-side signal contact"). Also, each pair of power contacts is composed of two contact members that form a pair with each other (for convenience, one contact member is referred to as the "right-side power contact" and the other contact member is referred to as the "left-side power contact"). The right-side signal contact and the left-side signal contact are formed in a symmetrical shape, and the right-side power contact and the left-side power contact are formed in a symmetrical shape. Also, the power contacts are formed wider than the signal contacts in order to have a structure with a large electric capacity because a large current flows through them.

[0005] Meanwhile, a horizontally mating type floating connector that has multiple pairs of signal contacts is known (see, for example, Patent Document 2). In this horizontally mating type floating connector, each pair of signal contacts is composed of two contact members that form a pair with each other (for convenience, one contact member is referred to as the "upper signal contact" and the other contact member is referred to as the "lower signal contact"), and the upper signal contact and the lower signal contact are formed to have mutually asymmetric shapes. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2022-131161 A [Patent Document 2] Patent No. 6192567 Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, in horizontal mating type floating connectors, two contact members that form a pair with each other (for convenience, one contact member is called the "upper power contact" and the other It is desired to have a power contact that is composed of a contact member (hereinafter referred to as a "lower power contact") and a contact member that is connected to the upper power contact. In such a power contact, it is desirable to configure the upper power contact and the lower power contact so that their conductor resistance values ​​are equal to each other. If the conductor resistance values ​​are different, there will be a bias in the amount of heat generated by the upper power contact and the lower power contact when current is applied, and there is a risk that the heat generation state (heat generation distribution) of the entire connector will become uneven.

[0008] In a vertically mating floating connector, the right-side power contact and the left-side power contact are formed symmetrically to each other, so it is relatively easy to configure the right-side power contact and the left-side power contact so that their respective conductor resistance values ​​are equal to each other. However, in a horizontally mating floating connector, the upper-side power contact and the lower-side power contact are formed asymmetrically to each other, so it is difficult to configure the upper-side power contact and the lower-side power contact so that their respective conductor resistance values ​​are equal to each other.

[0009] In addition, because the power contacts are formed wider than the signal contacts, there is a concern that the wider contacts make them less susceptible to elastic deformation, reducing their ability to follow the floating movement of the movable housing and their durability. Therefore, when providing power contacts (upper power contacts and lower power contacts) in a lateral-fitting floating connector, it is necessary to configure the upper power contacts and lower power contacts so that they can be appropriately elastically deformed in response to the floating movement of the movable housing, while also configuring the upper power contacts and lower power contacts so that their conductor resistance values ​​are equal to each other.

[0010] The present invention has been made in consideration of such problems, and aims to provide a horizontal mating type floating connector that can be configured so that the upper power supply contact and the lower power supply contact can be appropriately elastically deformed during floating movement of the movable housing, while also being configured so that the conductor resistance values ​​of the upper power supply contact and the lower power supply contact are equal to each other. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention provides a floating connector comprising: a fixed housing fixed on a substrate surface perpendicular to a top-bottom direction; a plurality of contact members arranged side by side in the left-right direction on the fixed housing and having base ends held by the fixed housing; and a movable housing attached to tip ends of the plurality of contact members and fitted in a mating connector in a front-rear direction, the movable housing being configured to move relatively to the fixed housing by elastic deformation of the plurality of contact members, the plurality of contact members having a plurality of pairs of signal contacts and at least one pair of power contacts, the at least one pair of power contacts having tip ends (for example, in an embodiment The contacts are configured as a pair of upper and lower power supply contacts, each of which has a press-fit contact portion (57, 67) aligned in the vertical direction, and the upper and lower power supply contacts have a cut-out portion (e.g., slits 59, 69 in the embodiment) that penetrates through the plate thickness direction at an intermediate portion of their respective total lengths and extends in their respective length directions, and are divided in the left-right direction by the cut-out portion at the portion where the cut-out portion is formed, and the upper and lower power supply contacts are formed so that their respective total lengths are the same length, and the lengths of the portions where the cut-out portions are formed are the same length.

[0012] In the floating connector according to the present invention, the upper power contact and the lower power contact have joints that are joined to the board surface, and the joints have notches. It is preferable that a notch is formed in the joint portion, and the joint portion is formed in a bifurcated shape in a plan view by the notch.

[0013] In addition, in the floating connector of the invention, the multiple pairs of signal contacts are each composed of a pair of upper signal contacts and lower signal contacts whose tips are arranged in the vertical direction, and it is preferable that, when viewed from the left-right side, the upper power supply contacts and the upper signal contacts are formed to have the same shape as each other, and that the lower signal contacts and the lower power supply contacts are formed to have the same shape as each other. Effect of the Invention

[0014] In the floating connector according to the present invention, the upper power contact and the lower power contact have a notch extending in the length direction, penetrating through the plate thickness direction at the intermediate portion of their respective total lengths, and are divided in the left-right direction by the notch at the portion where the notch is formed, so that the upper power contact and the lower power contact can be easily elastically deformed at the portion where the notch is formed. Therefore, it is possible to configure the upper power contact and the lower power contact so that they can be appropriately elastically deformed during the floating movement of the movable housing. In addition, the upper power contact and the lower power contact are formed so that their respective total lengths are the same length, and the lengths of the portions where the notches are formed are the same length, so that it is possible to configure the upper power contact and the lower power contact so that their respective conductor resistance values ​​are equal to each other.

[0015] In the floating connector according to the present invention, preferably, the upper power contact and the lower power contact have a joint portion where they are joined to the board surface, and a notch is formed in the joint portion, and the notch forms the joint portion into a bifurcated shape in a plan view. By configuring in this way, the length (perimeter) along the outer edge of the joint portion is increased, so that the area of ​​the soldering portion when soldering to join the joint portion to the board surface can be increased. Therefore, it is possible to efficiently release (dissipate) the heat generated in the upper power contact and the lower power contact into the board or air via the soldering portion.

[0016] In the floating connector according to the present invention, preferably, the plurality of pairs of signal contacts are each composed of a pair of upper signal contacts and lower signal contacts whose tips are arranged in a vertical direction, and in a side view in the left-right direction, the upper power supply contacts and the upper signal contacts are formed to have the same shape as each other, and the lower signal contacts and the lower power supply contacts are formed to have the same shape as each other. By configuring in this way, the upper power supply contacts and the lower power supply contacts can be assembled to the fixed housing and the movable housing by the same working manner (working method and working procedure) as that when the upper signal contacts and the lower signal contacts are assembled to the fixed housing and the movable housing. Therefore, it is possible to suppress a decrease in workability when assembling the floating connector while providing the signal contacts and the power supply contacts. [Brief description of the drawings]

[0017] [Figure 1] 1 is a plan view showing a state in which a receptacle connector (floating connector) and a plug connector (mating connector) according to an embodiment of the present invention are mated with each other. [Diagram 2] 4 is a right side view showing the receptacle connector and the plug connector in a mated state. FIG. [Diagram 3] 2 is a cross-sectional view taken along the arrow AA in FIG. [Figure 4] 2 is a cross-sectional view taken along the arrow BB in FIG. [Diagram 5] 1A to 1C are diagrams showing the receptacle connector, in which (A) is a front view, (B) is a plan view, and (C) is a right side view. [Figure 6] 1A and 1B are diagrams showing the receptacle connector, in which (A) is a bottom view and (B) is a rear view. [Figure 7] 1A to 1C are diagrams showing a fixed housing of the receptacle connector, in which (A) is a front view, (B) is a plan view, and (C) is a right side view. [Figure 8] 1A and 1B are diagrams showing the fixed housing, in which (A) is a bottom view and (B) is a rear view. [Figure 9] 1A to 1C are diagrams showing a movable housing of the receptacle connector, in which (A) is a front view, (B) is a plan view, and (C) is a right side view. [Figure 10] 1A and 1B are diagrams showing the movable housing, in which (A) is a bottom view and (B) is a rear view. [Figure 11] 1A is a front view of a plug connector (mating connector) in the above-mentioned mating connector assembly, FIG. 1B is a plan view, and FIG. 1C is a left side view. [Figure 12] FIG. 2 is a diagram showing the plug connector, in which (A) is a bottom view and (B) is a rear view. [Figure 13] 1A is a front view of the housing of the plug connector, FIG. 1B is a plan view, and FIG. 1C is a left side view. [Figure 14] 1A and 1B are diagrams showing the housing of the plug connector, in which (A) is a bottom view and (B) is a rear view. [Figure 15] FIG. 11 is a diagram showing the power supply receptacle contacts of the receptacle connector, where (A) is an oblique view of the upper power supply receptacle contact and the lower power supply receptacle contact, (B) is an oblique view of the upper power supply receptacle contact, and (C) is an oblique view of the lower power supply receptacle contact. [Figure 16]FIG. 1 shows power supply plug contacts provided in the plug connector, where (A) is an oblique view of an upper power supply plug contact and a lower power supply plug contact, (B) is an oblique view of the upper power supply plug contact, and (C) is an oblique view of the lower power supply plug contact. [Figure 17] 4A and 4B are diagrams showing a state in which the power receptacle contact and the power plug contact are connected, in which (A) is a perspective view and (B) is a side view. [Figure 18] FIG. 1A is a perspective view of signal receptacle contacts (upper signal receptacle contacts and lower signal receptacle contacts) of the receptacle connector, and FIG. 1B is a perspective view of signal plug contacts (upper signal plug contacts and lower signal plug contacts) of the plug connector. [Figure 19] 3A is a front view of a receptacle-side fixing metal fitting of the receptacle connector, and FIG. 3B is a front view of a plug-side fixing metal fitting of the plug connector. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 4 show a state in which a receptacle connector 1, which is a floating connector according to an embodiment of the present invention, and a plug connector 100, which is a mating connector, are mated with each other. In the following, the receptacle connector 1 and the plug connector 100 mated with each other will be referred to as a mating connector assembly AS. In addition, in the following description, for convenience of explanation, the front-rear, left-right, and up-down directions are defined by the directions of the arrows shown in FIGS. 1 to 4, etc., and the description will be given according to the front, rear, left, right, up, and down directions attached to each arrow. However, these directions are defined only for convenience of explanation. First, with reference to FIGS. 1 to 4, the overall configuration of the mating connector assembly AS shown in these figures will be roughly described.

[0019] The mating connector assembly AS is composed of a receptacle connector 1 provided on a first board CB1 (see FIG. 3) and a plug connector 100 provided on a second board CB2 (see FIG. 3). Both connectors 1, 100 are connected to the surfaces of the boards CB1, CB2. The first board CB1 and the second board CB2 are electrically connected by mating them in a parallel direction. That is, the mating connector assembly AS is configured as a connector device for board-to-board connection. The short side, long side, and height directions of the mating connector assembly AS (the receptacle connector 1 and the plug connector 100) respectively coincide with the front-rear direction, left-right direction, and up-down direction.

[0020] Next, the overall configuration of receptacle connector 1 will be described with additional reference to Figures 5 to 10, 15, and 17 to 19. Note that Figure 5(A) shows receptacle connector 1 as viewed from the front as a front view.

[0021] The receptacle connector 1 is configured as a horizontally mating type floating connector, and includes a fixed housing 10 fixed on a first board CB1 (see Figs. 3 and 4), a movable housing 20 arranged to be movable relative to the fixed housing 10, a plurality of pairs of signal receptacle contacts 30 arranged in a row in the longitudinal direction (left-right direction) of each of the housings 10, 20, two pairs of power receptacle contacts 50, one pair on each of the left and right sides of the row of the plurality of pairs of signal receptacle contacts 30, and receptacle-side fixing metal fittings 70 (see Fig. 19(A)) attached to both the left and right ends of the fixed housing 10. The signal receptacle contacts 30 are configured as a pair of upper signal receptacle contacts 30A and lower signal receptacle contacts 30B, which have different shapes (see Fig. 18(A)). Further, power supply receptacle contact 50 is configured as a pair of upper power supply receptacle contact 50A and lower power supply receptacle contact 50B having mutually different shapes (see FIG. 15).

[0022] The fixed housing 10 is made of an electrically insulating resin material or the like and is formed in a generally U-shape as viewed from the front as shown in Fig. 7(A). Specifically, the fixed housing 10 is configured to include a fixed-side main body portion 11 formed in a generally rectangular flat plate shape and extending left and right, a pair of left and right fixed-side movement restricting portions 15 erected upward at both left and right ends of the fixed-side main body portion 11, and a pair of left and right abutment protrusions 16 formed on the left and right inner sides of the fixed-side movement restricting portions 15 and protruding upward beyond the fixed-side movement restricting portions 15.

[0023] At the rear edge of the fixed side main body 11, as shown in Fig. 7(B), a plurality of fixed rear side signal press-fit grooves 12A extending in the up-down direction are aligned in the left-right direction at a predetermined pitch, and fixed rear side power supply press-fit grooves 13A extending in the up-down direction are formed on both the left and right sides of the row of fixed rear side signal press-fit grooves 12A. Fixed rear side signal press-fit grooves 12A are configured to receive fixed side press-fit portions 32 (see Fig. 18(A)) of upper signal receptacle contacts 30A by press-fitting, and fixed rear side power supply press-fit grooves 13A are configured to receive fixed side press-fit portions 52 (see Fig. 15(B)) of upper power supply receptacle contacts 50A by press-fitting. Meanwhile, a plurality of fixed front side signal press-fit grooves 12B extending in the vertical direction are formed in a line at a predetermined pitch in a left-right alignment on the front edge of the fixed side main body 11, and fixed front side power supply press-fit grooves 13B extending in the vertical direction are formed on both the left and right sides of the row of fixed front side signal press-fit grooves 12B. Fixed front side signal press-fit grooves 12B are configured to receive fixed side press-fit portions 42 (see FIG. 18(B)) of lower side signal receptacle contacts 30B by press-fitting, and fixed front side power supply press-fit grooves 13B are configured to receive fixed side press-fit portions 62 (see FIG. 15(C)) of lower side power supply receptacle contacts 50B by press-fitting.

[0024] An upwardly projecting contact restriction protrusion 14 is formed on the top surface of the fixed main body portion 11, extending in the left-right direction. A rear alignment groove portion 14a is formed in the rear portion of this contact restriction protrusion 14 and aligned in the left-right direction corresponding to each of the fixed rear signal press-fit grooves 12A (see FIG. 7(B)). The upper signal receptacle contacts 30A are positioned within this rear alignment groove portion 14a and are held aligned in the left-right direction. Meanwhile, a front portion of the contact restriction protrusion 14 has rear alignment groove portions 14a aligned in the left-right direction corresponding to each of the fixed rear signal press-fit grooves 12A. Front alignment grooves 14b (see FIG. 7B) are formed so as to align in the left-right direction in correspondence with the fixed front signal press-fit grooves 12B. The lower signal receptacle contacts 30B are positioned within the front alignment grooves 14b and are held in a state aligned in the left-right direction.

[0025] As shown in Fig. 7(C), the fixed-side movement restricting portion 15 is formed in a generally U-shape in side view, and has a receiving space 15a that is open upward. The receiving space 15a is surrounded by a front contact surface 15b located on the front side, a rear contact surface 15c located on the rear side, and a lower contact surface 15d located on the lower side. As shown in Figs. 7(A), (B), and 8, the fixed-side movement restricting portion 15 is formed with a slit-shaped metal fitting insertion groove 15e, into which the receptacle-side fixed metal fitting 70 is press-fitted from above. The contact protrusion 16 is formed in the rear portion between the fixed-side main body portion 11 and the fixed-side movement restricting portion 15, protruding upward.

[0026] The movable housing 20 is formed in a substantially rectangular parallelepiped shape using an electrically insulating resin material or the like, as shown in Fig. 9 and Fig. 10. Specifically, the movable housing 20 includes a movable-side main body 21 formed in a rectangular parallelepiped shape, and a pair of left and right movable-side movement restricting parts 26 formed by protruding outwardly to the left and right from both left and right ends of the movable-side main body 21. The movable-side main body 21 includes a rectangular plate-like upper wall part 21a extending in the front-rear and left-right directions, side wall parts 21b provided at the left and right ends of the upper wall part 21a, a partition part 21c extending to connect the left and right side wall parts 21b at a front-rear middle part of the upper wall part 21a, and a bottom wall part 21d provided to face the upper wall part 21a at a part forward of the partition part 21c, and a fitting recess 22 open to the front is formed surrounded by these walls. Within fitting recess 22, receptacle side protrusion 23 is formed in the shape of a rectangular plate that is long in the left-right direction and protrudes forward from partition wall 21c.

[0027] 9(A), a plurality of movable upper signal press-fit grooves 24A extending in the front-rear direction and penetrating partition wall portion 21c are formed in the upper surface portion of receptacle-side projection 23 in a left-right alignment at a predetermined pitch (see also FIG. 4), and movable upper power supply press-fit grooves 25A extending in the front-rear direction and penetrating partition wall portion 21c are formed on both the left and right sides of the row of movable upper signal press-fit grooves 24A (see also FIG. 3). Movable upper signal press-fit groove 24A is configured to receive press-fit contact portion 37 (see FIG. 18(A)) of upper signal receptacle contact 30A, and movable upper power supply press-fit groove 25A is configured to receive press-fit contact portion 57 (see FIG. 15(B)) of upper power supply receptacle contact 50A. 9(A), a plurality of movable lower signal press-fit grooves 24B extending in the front-rear direction and penetrating partition wall portion 21c are formed in the lower surface portion of receptacle-side protrusion 23 in a left-right alignment at a predetermined pitch (see also FIG. 4), and movable lower power supply press-fit grooves 25B extending in the front-rear direction and penetrating partition wall portion 21c are formed on both the left and right sides of the row of movable lower signal press-fit grooves 24B (see also FIG. 3). Movable lower signal press-fit groove 24B is configured to receive press-fit contact portion 47 (see FIG. 18(A)) of lower signal receptacle contact 30B for press-fitting, and movable lower power supply press-fit groove 25B is configured to receive press-fit contact portion 67 (see FIG. 15(C)) of lower power supply receptacle contact 50B for press-fitting.

[0028] 9, the movable-side movement restricting portion 26 is formed in a rectangular parallelepiped shape, and a metal fitting receiving recess 26 is formed in the movable-side movement restricting portion 26, which extends in the front-rear direction and is open in the front-rear direction and upward. The metal fitting receiving recess 26 is formed surrounded by recess side surfaces located on the left and right sides and a recess bottom surface located below. The movable-side movement restricting portion 26 has a front-rear dimension smaller than the receiving space 15a formed in the fixed-side movement restricting portion 15 of the fixed housing 10, and is formed so as to be insertable into the receiving space 15a from above.

[0029] The movable housing 20 includes a plurality of pairs of signal receptacle contacts 30 (pairs of upper signal receptacle contacts 30A and lower signal receptacle contacts 30B) and two The movable housing 20 is provided above the fixed housing 10 in a floating state via a pair of power supply receptacle contacts 50 (a pair of upper power supply receptacle contact 50A and lower power supply receptacle contact 50B). Then, with the movable housing 20 provided above the fixed housing 10, an elastic deformation allowing space 90 (see FIGS. 3 and 4) that is open toward the rear is formed between the movable housing 20 and the fixed housing 60, in which the elastically deforming portions of the signal receptacle contacts 30 and the power supply receptacle contacts 50 attached to the fixed housing 10 and the movable housing 20 are located.

[0030] The upper signal receptacle contact 30A, which is one of a pair constituting the signal receptacle contact 30, is formed into a predetermined shape as shown in Fig. 18(A) by pressing (punching and bending) an elastic conductive metal plate. This upper signal receptacle contact 30A is composed of a base end joint portion 31 formed extending in the front-rear direction and soldered to the signal wiring pattern of the first board CB1, a fixed side press-fit portion 32 bent upward in an L-shape from the front end of the base end joint portion 31, extending in the up-down direction, and press-fitted into the fixed rear side signal press-fit groove 12A of the fixed housing 10, a press-fit contact portion 37 press-fitted into the movable upper signal press-fit groove 24A of the movable housing 20, and an upper middle portion 38 connecting the fixed side press-fit portion 32 and the press-fit contact portion 37.

[0031] The upper intermediate portion 38 includes a first intermediate portion 33 bent forward from the upper end of the fixed side press-fit portion 32 in an L-shape and extending in the front-rear direction, a second intermediate portion 34 bent upward from the front end of the first intermediate portion 33 in an L-shape and extending in the vertical direction, a third intermediate portion 35 bent forward from the upper end of the second intermediate portion 34 in an L-shape and extending in the front-rear direction, and a fourth intermediate portion 36 bent upward from the front end of the third intermediate portion 35 in an L-shape and extending in the vertical direction. The press-fit contact portion 37 is formed by bending forward from the upper end of the fourth intermediate portion 36 in an L-shape and extending in the front-rear direction. In addition, the upper intermediate portion 38 has a total of four bent portions (a first bent portion 33a formed between the first intermediate portion 33 and the second intermediate portion 34, a second bent portion 34a formed between the second intermediate portion 34 and the third intermediate portion 35, a third bent portion 35a formed between the third intermediate portion 35 and the fourth intermediate portion 36, and a fourth bent portion 36a formed between the fourth intermediate portion 36 and the press-fit contact portion 37).

[0032] The lower signal receptacle contact 30B, which is the other of the pair constituting the signal receptacle contact 30, is formed into a predetermined shape as shown in Fig. 18(A) by pressing an elastic conductive metal plate. This lower signal receptacle contact 30B is composed of a base end joint portion 41 formed extending in the front-rear direction and soldered to the signal wiring pattern of the second board CB2, a fixed side press-fit portion 42 bent upward in an L-shape from the rear end of the base end joint portion 41, extending in the up-down direction, and press-fitted into the fixed front side signal press-fit groove 12B of the fixed housing 10, a press-fit contact portion 47 press-fitted into the movable lower signal press-fit groove 24B of the movable housing 20, and a lower intermediate portion 48 connecting the fixed side press-fit portion 42 and the press-fit contact portion 47.

[0033] The lower intermediate portion 48 includes a first intermediate portion 43 bent rearward from the upper end of the fixed side press-fit portion 42 in an L-shape and extending in the front-rear direction, a second intermediate portion 44 bent upward from the rear end of the first intermediate portion 43 in an L-shape and extending in the vertical direction, a third intermediate portion 45 bent forward from the upper end of the second intermediate portion 44 in an L-shape and extending in the front-rear direction, and a fourth intermediate portion 46 bent upward from the front end of the third intermediate portion 45 in an L-shape and extending in the vertical direction. The press-fit contact portion 47 is formed by bending forward from the upper end of the fourth intermediate portion 46 in an L-shape and extending in the front-rear direction. In addition, the lower intermediate portion 48 has a total of four bent portions (a first bent portion 43a formed between the first intermediate portion 43 and the second intermediate portion 44, a second bent portion 44a formed between the second intermediate portion 44 and the third intermediate portion 45, a third bent portion 45a formed between the third intermediate portion 45 and the fourth intermediate portion 46, and a fourth bent portion 46a formed between the fourth intermediate portion 46 and the press-fit contact portion 47).

[0034] In the upper signal receptacle contact 30A attached to the fixed housing 10 and the movable housing 20, a part of the rear end side of the press-fit contact portion 37 and the upper intermediate portion 38 are located within the elastic deformation allowing space 90 (see FIG. 4) and are elastically deformable. Similarly, in the lower signal receptacle contact 30B attached to the fixed housing 10 and the movable housing 20, the lower intermediate portion 48 is located within the elastic deformation allowing space 90 and is elastically deformable.

[0035] Upper power supply receptacle contact 50A, which is one of a pair constituting power supply receptacle contact 50, is formed into a predetermined shape as shown in Fig. 15(B) by pressing an elastic conductive metal plate. This upper power supply receptacle contact 50A is composed of a base end joint portion 51 formed extending in the front-rear direction and soldered to the power supply wiring pattern of first board CB1, a fixed side press-fit portion 52 bent upward in an L-shape from the front end of base end joint portion 51, extending in the up-down direction, and press-fitted into fixed rear side power supply press-fit groove 13A of fixed housing 10, a press-fit contact portion 57 press-fitted into movable upper power supply press-fit groove 25A of movable housing 20, and an upper middle portion 58 connecting fixed side press-fit portion 52 and press-fit contact portion 57.

[0036] The upper intermediate portion 58 includes a first intermediate portion 53 bent forward from the upper end of the fixed side press-fit portion 52 in an L-shape and extending in the front-rear direction, a second intermediate portion 54 bent upward from the front end of the first intermediate portion 53 in an L-shape and extending in the vertical direction, a third intermediate portion 55 bent forward from the upper end of the second intermediate portion 54 in an L-shape and extending in the front-rear direction, and a fourth intermediate portion 56 bent upward from the front end of the third intermediate portion 55 in an L-shape and extending in the vertical direction. The press-fit contact portion 57 is formed by bending forward from the upper end of the fourth intermediate portion 56 in an L-shape and extending in the front-rear direction. In addition, the upper intermediate portion 58 has a total of four bent portions (a first bent portion 53a formed between the first intermediate portion 53 and the second intermediate portion 54, a second bent portion 54a formed between the second intermediate portion 54 and the third intermediate portion 55, a third bent portion 55a formed between the third intermediate portion 55 and the fourth intermediate portion 56, and a fourth bent portion 56a formed between the fourth intermediate portion 56 and the press-fit contact portion 57).

[0037] Specifically, the press-fit contact portion 57 is divided into a press-fit contact rear portion 57a ​​extending forward from the fourth bent portion 56a, and a press-fit contact front portion 57b extending further forward from the front end of the press-fit contact rear portion 57a. The press-fit contact rear portion 57a ​​is formed so that its plate width (width in the left-right direction) is equal to the plate width of the upper intermediate portion 58, and the press-fit contact front portion 57b is formed so that its plate width is slightly larger than the plate width of the press-fit contact rear portion 57a. Press-fit protrusions 57c are formed at both ends in the plate width direction of the press-fit contact front portion 57b, which protrude outward (outward in the left-right direction) and bite into the inner surface of the movable upper power supply press-fit groove 25A to function as retainers. At both ends in the plate width direction of the fixed side press-fit portion 52, press-fit protrusions 52c are formed which protrude outward and bite into the inner surface of the fixed rear side power supply press-fit groove 13A to function as stoppers.

[0038] The lower power supply receptacle contact 50B, which is the other of the pair constituting the power supply receptacle contact 50, is formed into a predetermined shape as shown in Fig. 15(C) by pressing an elastic conductive metal plate. This lower power supply receptacle contact 50B is composed of a base end joint portion 61 formed extending in the front-rear direction and soldered to the power supply wiring pattern of the first board CB1, a fixed side press-fit portion 62 bent upward in an L-shape from the rear end of the base end joint portion 61, extending in the up-down direction, and press-fitted into the fixed front side power supply press-fit groove 13B of the fixed housing 10, a press-fit contact portion 67 press-fitted into the movable lower side power supply press-fit groove 25B of the movable housing 20, and a lower middle portion 68 connecting the fixed side press-fit portion 62 and the press-fit contact portion 67.

[0039] The lower intermediate portion 68 is made up of a first intermediate portion 63 that is bent rearward from the upper end of the fixed side press-fit portion 62 into an L-shape and extends in the front-rear direction, a second intermediate portion 64 that is bent upward from the rear end of the first intermediate portion 63 into an L-shape and extends in the up-down direction, and a second intermediate portion 64 that is bent forward from the upper end of the second intermediate portion 64 into an L-shape. The lower intermediate portion 68 includes a third intermediate portion 65 extending in the front-rear direction, and a fourth intermediate portion 66 bent upward from a front end of the third intermediate portion 65 in an L-shape and extending in the up-down direction. The press-fit contact portion 67 is bent forward from an upper end of the fourth intermediate portion 66 in an L-shape and extends in the front-rear direction. The lower intermediate portion 68 includes a total of four bent portions (a first bent portion 63a formed between the first intermediate portion 63 and the second intermediate portion 64, a second bent portion 64a formed between the second intermediate portion 64 and the third intermediate portion 65, a third bent portion 65a formed between the third intermediate portion 65 and the fourth intermediate portion 66, and a fourth bent portion 66a formed between the fourth intermediate portion 66 and the press-fit contact portion 67).

[0040] A press-in protrusion 67c that protrudes outward and bites into the inner surface of the movable lower power supply press-in groove 25B to function as a retainer is formed at both ends in the plate width direction of the press-in contact portion 67. In addition, a press-in protrusion 62c that similarly protrudes outward and bites into the inner surface of the fixed front power supply press-in groove 13B to function as a retainer is formed at both ends in the plate width direction of the fixed side press-in portion 62.

[0041] The plate thickness dimension of the power receptacle contacts 50 (upper power receptacle contacts 50A and lower power receptacle contacts 50B) is formed to be approximately the same as the plate thickness dimension of the signal receptacle contacts 30 (upper signal receptacle contacts 30A and lower signal receptacle contacts 30B). On the other hand, the plate width dimension (width dimension in the left-right direction) of the power receptacle contacts 50 is formed to be larger than the plate width dimension of the signal receptacle contacts 30. This ensures a large cross-sectional area of ​​the power receptacle contacts 50, allowing a larger current to flow through the power receptacle contacts 50 compared to the signal receptacle contacts 30.

[0042] In the upper power supply receptacle contact 50A attached to the fixed housing 10 and the movable housing 20, a part of the rear end side of the press-fit contact portion 57 (press-fit contact rear portion 57a) and the upper intermediate portion 58 are located within the elastic deformation allowable space portion 90 (see FIG. 4) and are elastically deformable. Similarly, in the lower power supply receptacle contact 50B attached to the fixed housing 10 and the movable housing 20, the lower intermediate portion 68 is located within the elastic deformation allowable space portion 90 and is elastically deformable. Of the press-fit contact front portion 57b and the press-fit contact rear portion 57a ​​constituting the press-fit contact portion 57 of the upper power supply receptacle contact 50A, only the press-fit contact front portion 57b is press-fitted into the movable upper power supply press-fit groove 25A, and the press-fit contact rear portion 57a ​​is located within the elastic deformation allowable space portion 90 and is elastically deformable. Therefore, the press-fit contact rear portion 57a ​​may be considered as a part of the upper intermediate portion 58.

[0043] As shown in Fig. 15(B), upper power supply receptacle contact 50A is formed with slit 59 as a cut portion that penetrates upper power supply receptacle contact 50A in the plate thickness direction and extends along the length direction (longitudinal direction of the plate surface) of upper power supply receptacle contact 50A. Slit 59 is formed continuously from the middle position in the front-rear direction of first intermediate portion 53 to the boundary position between press-fit contact rear portion 57a ​​and press-fit contact front portion 57b of press-fit contact portion 57, including first bent portion 53a, second intermediate portion 54, second bent portion 54a, third intermediate portion 55, third bent portion 55a, fourth intermediate portion 56, and fourth bent portion 56a. Upper power supply receptacle contact 50A is divided into two in the left-right direction by slit 59 at the portion where slit 59 is formed. This configuration allows upper power supply receptacle contact 50A to be appropriately elastically deformed in the portion where slit 59 is formed, thereby improving the compliance and durability of upper power supply receptacle contact 50A during floating movement of movable housing 20.

[0044] As shown in FIG. 15C, the lower power supply receptacle contact 50B has a lower power supply receptacle contact 50A and a lower power supply receptacle contact 50B. A slit 69 is formed penetrating the first intermediate portion 63 in the plate thickness direction and extending along the length direction of the lower power supply receptacle contact 50B. The slit 69 is formed continuously from the front-rear direction middle position of the first intermediate portion 63 to the fourth bent portion 66a, including the first bent portion 63a, the second intermediate portion 64, the second bent portion 64a, the third intermediate portion 65, the third bent portion 65a, and the fourth intermediate portion 66. The slit 69 divides the lower power supply receptacle contact 50B into two in the left-right direction at the portion where the lower slit 69 is formed. This configuration allows the lower power supply receptacle contact 50B to be appropriately elastically deformed at the portion where the slit 69 is formed. Therefore, it is possible to improve the followability and durability of the lower power supply receptacle contact 50B when the movable housing 20 moves in a floating manner.

[0045] The thickness, width and overall length of upper power supply receptacle contact 50A are substantially the same as the thickness, width and overall length of lower power supply receptacle contact 50B. The left-right width of slit 59 is substantially the same as the left-right width of slit 69. The length of the portion of upper power supply receptacle contact 50A where slit 59 is formed (substantially equal to the overall length of upper slit 59) is substantially the same as the length of the portion of lower power supply receptacle contact 50B where slit 69 is formed (substantially equal to the overall length of slit 69). With this configuration, the conductor resistance values ​​of upper power supply receptacle contact 50A and lower power supply receptacle contact 50B can be set to be equivalent to each other. Therefore, it is possible to prevent a difference in the amount of heat generated between upper power receptacle contact 50A and lower power receptacle contact 50B when current is applied.

[0046] As shown in FIG. 15B, the base end joint 51 of the upper power receptacle contact 50A has a notch 51a that opens toward the rear, and the notch 51a causes the base end joint 51 to be bifurcated in plan view (in this example, the entire base end joint 51 has a substantially U-shaped shape). This configuration makes it possible to increase the length (perimeter) along the outer edge of the base end joint 51 compared to when the notch 51 is not formed, and therefore increases the area of ​​the soldering portion when soldering the base end joint 51 to join it to the power wiring pattern of the first board CB1. This allows the amount of heat generated in the upper power receptacle contact 50A to be efficiently released to the first board CB1 or into the air via the soldering portion.

[0047] As in the case of upper power supply receptacle contact 50A, a notch 61a that opens toward the front is formed in base end joint portion 61 of lower power supply receptacle contact 50B as shown in Fig. 15(C), and this notch 61a forms base end joint portion 61 in a bifurcated shape in plan view (in this example, base end joint portion 61 has a generally U-shaped overall shape). With this configuration, it is possible to obtain the same effect as upper power supply receptacle contact 50A.

[0048] The shape of upper power supply receptacle contact 50A in side view from the left and right is formed to be the same as the shape of upper signal receptacle contact 30A in side view. Similarly, the shape of lower power supply receptacle contact 50B in side view from the left and right is formed to be the same as the shape of lower signal receptacle contact 30B in side view.

[0049] The upper signal receptacle contact 30A is assembled to the movable housing 20 by pressing the press-fit contact portion 37 into the movable upper signal press-fit groove 24A of the movable housing 20, and is assembled to the fixed housing 10 by pressing the fixed side press-fit portion 32 into the fixed rear side signal press-fit groove 12A of the fixed housing 10. Similarly, the upper power receptacle contact The upper power receptacle contact 50A is assembled to the movable housing 20 by pressing the press-fit contact portion 57 into the movable upper power supply press-fit groove 25A of the movable housing 20, and the fixed side press-fit portion 52 is pressed into the fixed rear power supply press-fit groove 13A of the fixed housing 10, thereby assembling the upper power supply receptacle contact 50A to the movable housing 20 and the fixed housing 10. Because the shape of the upper power supply receptacle contact 50A in a side view is formed to be the same as the shape of the upper signal receptacle contact 30A in the same side view, the upper power supply receptacle contact 50A can be assembled to the movable housing 20 and the fixed housing 10 in the same working manner (working method and working procedure) as that for assembling the upper signal receptacle contact 30A to the movable housing 20 and the fixed housing 10, thereby enabling efficient assembly work to be performed.

[0050] The lower signal receptacle contact 30B is assembled to the movable housing 20 by having the press-fit contact portion 47 press-fitted into the movable lower signal press-fit groove 24B of the movable housing 20, and is assembled to the fixed housing 10 by having the fixed side press-fit portion 42 press-fitted into the fixed front signal press-fit groove 12B of the fixed housing 10. Similarly, the lower power supply receptacle contact 50B is assembled to the movable housing 20 by having the press-fit contact portion 67 press-fitted into the movable lower power supply press-fit groove 25B of the movable housing 20, and is assembled to the fixed housing 10 by having the fixed side press-fit portion 62 press-fitted into the fixed front power supply press-fit groove 13B of the fixed housing 10. Since the shape of lower power supply receptacle contact 50B in side view is formed to be the same as the shape of lower signal receptacle contact 30B in side view, lower power supply receptacle contact 50B can be assembled to movable housing 20 and fixed housing 10 in a similar manner to the manner in which lower signal receptacle contact 30B is assembled to movable housing 20 and fixed housing 10, making it possible to perform assembly work efficiently.

[0051] By assembling the upper signal receptacle contact 30A, the lower signal receptacle contact 30B, the upper power supply receptacle contact 50A and the lower power supply receptacle contact 50B to the movable housing 20 and the fixed housing 10, the movable housing 20 is connected to the fixed housing 10 via these multiple receptacle contact members 30A, 30B, 50A, 50B so as to be able to move relatively (floating move) in the front-to-back, left-to-right and up-down directions relative to the fixed housing 10.

[0052] Receptacle-side fixing metal fitting 70 is formed by punching a metal plate into a generally U-shape as shown in Fig. 19(A). Receptacle-side fixing metal fitting 70 is configured to include a pair of joint portions 71 that are soldered and fixed to a fixing pattern formed on first board CB1, a pair of press-fit portions 72 that extend upward from joint portions 71 and are press-fitted into metal fitting insertion groove 15e of fixed housing 10, and an intermediate portion 73 that connects upper ends of the pair of press-fit portions 72.

[0053] The receptacle connector 1 is assembled by attaching the receptacle side fixing metal fitting 70 to the metal fitting insertion groove 15e of the fixed housing 10 with respect to the movable housing 20 and the fixed housing 10, which are connected via a plurality of receptacle contact members 30A, 30B, 50A, 50B. With the receptacle side fixing metal fitting 70 attached to the metal fitting insertion groove 15e, a predetermined gap is formed between the movable side movement restricting portion 26 of the movable housing 20 and the middle portion 73 of the receptacle side fixing metal fitting 70. This allows the movable housing 20 to move upward in a floating manner relative to the fixed housing 10 by an amount corresponding to this gap, while restricting any further movement.

[0054] In the assembled receptacle connector 1, the base end joints 31, 41 of the signal receptacle contacts 30 (upper signal receptacle contacts 30A and lower signal receptacle contacts 30B) are soldered to the signal wiring pattern of the first board CB1. The base end joints 51, 61 of the power receptacle contacts 50 (upper power supply receptacle contact 50A and lower power supply receptacle contact 50B) are soldered to the power wiring pattern of the first board CB1, and further the joint 71 of the receptacle side fixing bracket 70 is soldered to the fixing pattern of the first board CB1, thereby surface mounting on the first board CB1.

[0055] Next, the overall configuration of plug connector 100, which is a mating counterpart of receptacle connector 1, will be described with additional reference to Figures 11 to 14 and 16. Note that Figure 11(A) shows plug connector 100 as viewed from the rear as a front view.

[0056] The plug connector 100 is a mating connector that is mated with the floating connector, and as shown in Figs. 11 and 12, includes a plug housing 110 fixed to a second board CB2 (see Figs. 3 and 4), a plurality of pairs of signal plug contacts 130 aligned in the longitudinal direction (left-right direction) of the plug housing 110, two pairs of power plug contacts 150, one pair on each of the left and right sides of the row of the plurality of pairs of signal plug contacts 130, and plug-side fixing metal fittings 170 (see Fig. 19(B)) attached to both the left and right ends of the plug housing 110. The signal plug contacts 130 are configured as a pair of upper signal plug contacts 130A and lower signal plug contacts 130B that are different in shape (see Fig. 18(B)). The power plug contacts 150 are configured as a pair of upper plug contacts 150A and lower plug contacts 150B that are different in shape (see Fig. 16).

[0057] The plug housing 110 is formed of an electrically insulating resin material or the like in a substantially rectangular parallelepiped shape as shown in Fig. 13 and Fig. 14. Specifically, the plug housing 110 is configured to include a housing main body 111 formed in a rectangular parallelepiped shape, and a pair of left and right fixing metal attachment parts 118 formed to protrude outwardly to the left and right from both left and right ends of the housing main body 111. A slit-shaped metal attachment groove 118a is formed in the fixing metal attachment part 118. The housing main body 111 has a plug-side fitting part 112 formed to protrude rearward and inserted into and fitted in the fitting recess 22 of the movable housing 20, and a plug-side lower wall part 113 provided at the lower front end of the plug-side fitting part 112 and having an L-shaped longitudinal cross section in the front-rear direction (see also Figs. 3 and 4).

[0058] 3 and 4, plug-side fitting portion 112 has an internal receiving space, and is configured to be able to receive receptacle-side protrusion 23 of receptacle connector 1, press-fit contact portions 37, 47 of signal receptacle contact 30, and press-fit contact portions 57, 67 of power receptacle contact 50 in the front-rear direction within this receiving space. As shown in Fig. 14(B), a plurality of upper signal press-fit grooves 114A extending in the front-rear direction are formed in the inner upper wall surface of plug-side fitting portion 112, aligned in the left-right direction at a predetermined pitch (see also Fig. 4), and upper power supply press-fit grooves 115A extending in the front-rear direction are formed on both the left and right sides of the row of upper signal press-fit grooves 114A (see also Fig. 3). The upper signal press-fit groove 114A is configured to receive the horizontal press-fit portion 133 (see FIG. 18(B)) of the upper signal plug contact 130A, and the upper power supply press-fit groove 115A is configured to receive the horizontal press-fit portion 153 (see FIG. 16(B)) of the upper power supply plug contact 150A. On the other hand, as shown in FIG. 14(B), a plurality of lower signal press-fit grooves 114B extending in the front-rear direction are formed in the inner lower wall surface of the plug-side fitting portion 112 in a left-right alignment at a predetermined pitch (see also FIG. 4), and lower power supply press-fit grooves 115B extending in the front-rear direction are formed on both the left and right sides of the row of the lower signal press-fit grooves 114B, respectively (see also FIG. 3). The lower signal press-in groove 114B is configured to receive the horizontal press-in portion 145 (see FIG. 18(B)) of the lower signal plug contact 130B, and the lower power supply press-in groove 115B is configured to receive the horizontal press-in portion 165 (see FIG. 16(C)) of the lower power supply plug contact 150B.

[0059] 14(B), a plurality of front signal press-fit grooves 116A extending in the up-down direction are formed in the front surface of the plug-side lower wall portion 113 in a left-right alignment at a predetermined pitch (see also FIG. 4), and front power supply press-fit grooves 116B extending in the up-down direction are formed on both the left and right sides of the row of the front signal press-fit grooves 116A (see also FIG. 3). The front signal press-fit grooves 116A are configured to press-fit the intermediate press-fit portion 132 of the upper signal plug contact 130A and the third intermediate portion 144 of the lower signal plug contact 130B (see FIG. 18(B)), and the front power supply press-fit grooves 116B are configured to press-fit the intermediate press-fit portion 152 of the upper power supply plug contact 150A (see FIG. 16(B)) and the third intermediate portion 164 of the lower power supply plug contact 150B (see FIG. 16(C)).

[0060] 14(B), a plurality of rear signal insertion grooves 117A extending in the front-rear direction are aligned in the left-right direction at a predetermined pitch on the lower surface of the plug-side lower wall portion 113 (see also FIG. 4), and rear power supply insertion grooves 117B extending in the front-rear direction are formed on both the left and right sides of the row of rear signal insertion grooves 117A (see also FIG. 3). The rear signal insertion grooves 117A are configured to receive the second intermediate portions 143 (see FIG. 18(B)) of the lower signal plug contacts 130B, and the rear power supply insertion grooves 117B are configured to receive the second intermediate portions 163 (see FIG. 16(C)) of the lower power supply plug contacts 150B press-fitted therein.

[0061] The upper signal plug contact 130A, which is one of a pair of signal plug contacts 130, is formed into a predetermined shape as shown in Fig. 18(B) by pressing an elastic conductive metal plate. The upper signal plug contact 130A is composed of a base end joint portion 131 formed to extend in the front-rear direction and soldered to the signal wiring pattern of the second board CB2, an intermediate press-fit portion 132 bent upward from the front end of the base end joint portion 131 into an L-shape, extending in the vertical direction, and press-fitted into the front signal press-fit groove 116A of the plug housing 110, a horizontal press-fit portion 133 bent forward from the upper end of the intermediate press-fit portion 132 into an L-shape, extending in the front-rear direction, and press-fitted into the upper signal press-fit groove 114A of the plug housing 110, and a contact portion 134 bent from the rear end of the horizontal press-fit portion 133 into a dogleg shape, extending diagonally downward, and further bent at its rear end diagonally upward to be elastically deformable in the vertical direction.

[0062] The lower signal plug contact 130B, which is the other of the pair constituting the signal plug contact 130, is formed by pressing an elastic conductive metal plate and bending it into a predetermined shape as shown in Fig. 18(B). This lower signal plug contact 130B is made up of a base end joint portion 141 formed extending in the front-rear direction and soldered to the signal wiring pattern of the second board CB2, a first intermediate portion 142 bent upward from the front end of the base end joint portion 141 into an L-shape and extending in the up-down direction, a second intermediate portion 143 bent forward from the front end of the first intermediate portion 142 into an L-shape and extending in the front-rear direction to be inserted into the rear signal insertion groove 117A of the plug housing 110, and a second intermediate portion 143 bent upward from the front end of the second intermediate portion 143 into an L-shape and extending in the front-rear direction to be inserted into the rear signal insertion groove 117A of the plug housing 110. 1 and 2. The horizontal press-fit portion 145 is bent forward from the upper end of the third intermediate portion 144 in an L-shape, extends in the front-to-back direction, and is press-fitted into the lower signal press-fit groove 114B of the plug housing 110. The horizontal press-fit portion 145 is bent forward from the rear end of the horizontal press-fit portion 145 in an L-shape, extends in the front-to-rear direction, and is press-fitted into the lower signal press-fit groove 114B of the plug housing 110. The horizontal press-fit portion 145 is bent from the rear end of the horizontal press-fit portion 145 in an L-shape, extends diagonally upward, and has its rear end bent diagonally downward so that it is elastically deformable in the vertical direction.

[0063] The upper power plug contact 150A, which is one of a pair constituting the power plug contact 150, is formed into a predetermined shape as shown in Fig. 16(B) by pressing an elastic conductive metal plate. This upper power plug contact 150A has a base end joint portion 151 formed to extend in the front-rear direction and solder-connected to the power wiring pattern of the second board CB2, an intermediate press-fit portion 152 bent upward in an L-shape from the front end of the base end joint portion 151, extends in the up-down direction, and is press-fitted into the front power press-fit groove 116B of the plug housing 110, and a base end joint portion 152 formed to extend in the front-rear direction and solder-connected to the power wiring pattern of the second board CB2. 52. A horizontal press-in portion 153 is bent forward in an L-shape from the upper end of the horizontal press-in portion 152, extends in the front-to-rear direction, and is press-fitted into the upper power supply press-in groove 115A of the plug housing 110. A contact portion 154 is bent from the rear end of the horizontal press-in portion 153 in an L-shape, extends diagonally downward, and has its rear end bent diagonally upward so that it is elastically deformable in the vertical direction.

[0064] The lower power supply plug contact 150B, which is the other of the pair constituting the power supply plug contact 150, is formed into a predetermined shape as shown in Fig. 16(C) by pressing an elastic conductive metal plate. This lower power supply plug contact 150B is made up of a base end joint portion 161 formed extending in the front-rear direction and soldered to the power supply wiring pattern of the second board CB2, a first intermediate portion 162 bent upward from the front end of the base end joint portion 161 into an L-shape and extending in the up-down direction, a second intermediate portion 163 bent forward from the front end of the first intermediate portion 162 into an L-shape and extending in the front-rear direction to be inserted into the rear power supply insertion groove 117B of the plug housing 110, and a second intermediate portion 163 bent upward from the front end of the second intermediate portion 163 into an L-shape and extending in the front-rear direction to be inserted into the rear power supply insertion groove 117B of the plug housing 110. 1 and 2. The horizontal press-fit portion 165 is bent forward from the upper end of the third intermediate portion 164 in an L-shape, extends in the front-to-rear direction, and is press-fitted into the lower power supply press-fit groove 115B of the plug housing 110. The horizontal press-fit portion 165 is bent forward from the rear end of the horizontal press-fit portion 165 in an L-shape, extends in the front-to-rear direction, and is press-fitted into the lower power supply press-fit groove 115B of the plug housing 110. The horizontal press-fit portion 165 has a contact portion 166 bent from the rear end of the horizontal press-fit portion 165 in an L-shape, extends diagonally upward, and has its rear end bent diagonally downward so that it is elastically deformable in the vertical direction.

[0065] As shown in Fig. 16(B), the upper power supply plug contact 150A is formed with a slit 159 penetrating the upper power supply plug contact 150A in the plate thickness direction and extending along the length direction of the upper power supply plug contact 150A. The slit 159 is formed continuously from the boundary position between the horizontal press-fit portion 153 and the contact portion 154 to the longitudinal middle portion of the contact portion 154. Similarly, the lower power supply plug contact 150B is formed with a slit 169 penetrating the lower power supply plug contact 150B in the plate thickness direction and extending continuously from the boundary position between the horizontal press-fit portion 165 and the contact portion 166 to the longitudinal middle portion of the contact portion 166 as shown in Fig. 16(C). This allows the contact portions 154, 166 of the dual power supply plug contacts 150A, 150B to be elastically deformed appropriately.

[0066] The plug-side fixing metal fitting 170 is formed by punching a metal plate into a substantially U-shape as shown in Fig. 19(B). The plug-side fixing metal fitting 170 is configured to include a pair of joint parts 171 that are soldered and fixed to a fixing pattern formed on the second board CB2, a pair of press-fit parts 172 that extend upward from the joint parts 171 and are press-fitted into the metal fitting insertion groove 118a of the plug housing 110, and an intermediate part 173 that connects the upper ends of the pair of press-fit parts 172.

[0067] The upper signal plug contacts 130A, the lower signal plug contacts 130B, the upper power supply plug contacts 150A and the lower power supply plug contacts 150B are assembled into the plug housing 110, and the plug side fixing metal fittings 170 are attached to the metal fitting insertion grooves 118a of the plug housing 110, thereby assembling the plug connector 100. The assembled plug connector 100 is surface mounted on the second board CB2 by soldering the base end joints 131, 141 of the signal plug contacts 130 (upper signal plug contacts 130A and lower signal plug contacts 130B) to the signal wiring pattern of the second board CB2, soldering the base end joints 151, 161 of the power plug contacts 150 (upper power plug contacts 150A and lower power plug contacts 150B) to the power wiring pattern of the second board CB2, and further by soldering the joint 171 of the plug side fixing bracket 170 to the fixing pattern of the second board CB2.

[0068] The receptacle connector 1 mounted on the first board CB1 and the plug connector 100 mounted on the second board CB2 are fitted together by inserting the plug-side fitting portion 112 of the plug connector 100 into the fitting recess 22 of the receptacle connector 1 in the front-rear direction. When the connectors 1,100 are mated, the press-fit contact portions 37, 47 of the signal receptacle contacts 30 and the contact portions 134, 146 of the signal plug contacts 130 elastically contact each other, and the press-fit contact portions 57, 67 of the power receptacle contacts 50 and the contact portions 154, 166 of the power plug contacts 150 elastically contact each other (see FIGS. 3, 4, and 17). This electrically connects the signal wiring patterns of the two boards CB1, CB2 and the power wiring patterns of the two boards CB1, CB2 together via the two connectors 1,100. Furthermore, the mated connector assembly AS is formed by mating and connecting the two connectors 1,100.

[0069] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as appropriate within the scope of the present invention. For example, in the above embodiment, only one slit 59 is formed in the upper power supply receptacle contact 50A, and the upper power supply receptacle contact 50A is divided into two in the left and right direction by this slit 59 at the portion where the slit 59 is formed, but the present invention is not limited to this embodiment. A plurality of slits 59 may be formed so as to be aligned parallel to each other along the plate width direction of the upper power supply receptacle contact 50A, and the upper power supply receptacle contact 50A may be divided into three or more in the plate width direction at the portion where the plurality of slits 59 are formed. A similar modification can be made to the slit 69 of the lower power supply receptacle contact 50B.

[0070] In the above embodiment, upper intermediate portion 58 of upper power supply receptacle contact 50A has a shape having a total of four bent portions, but instead of this embodiment, upper intermediate portion 58 may be modified to have a shape having a total of five or more bent portions. A similar modification can be made to the bent portions of lower power supply receptacle contact 50B. Also, in the above embodiment, the present invention is applied to a receptacle connector as a floating connector, but it is also possible to apply the present invention to a plug connector as a floating connector. [Explanation of symbols]

[0071] 1 Plug connector (floating connector) 10 Fixed housing 20 Movable housing 30 Signal Receptacle Contacts 30A Upper signal receptacle contact 30B Lower signal receptacle contact 50 Power Receptacle Contacts 50A Upper Power Receptacle Contact 50B Lower Power Receptacle Contact 52a Notch 59,69 Slit (notch) 100 Plug connector (Mating connector) 110 Plug housing 130 Signal plug contact 150 Power Plug Contact AS Mating Connector Assembly CB1 1st board CB2 Second board

Claims

1. a fixed housing fixed on a substrate surface perpendicular to the up-down direction; a plurality of contact members arranged side by side in the left-right direction on the fixed housing, the base ends of which are held by the fixed housing; a movable housing attached to the tip end side of the plurality of contact members and adapted to be fitted in a mating connector in a front-rear direction; a floating connector configured so that the movable housing is movable relative to the fixed housing by elastic deformation of the plurality of contact members, The plurality of contact members include a plurality of pairs of signal contacts and at least one pair of power contacts, the at least one pair of power contacts is configured by a pair of an upper power contact and a lower power contact that are arranged such that their tip ends are aligned in the vertical direction, the upper power supply contact and the lower power supply contact each have a notch at an intermediate portion of their entire length, the notch penetrating through in a thickness direction and extending in the length direction, and the upper power supply contact and the lower power supply contact are divided in the left-right direction by the notch at the portion where the notch is formed, A floating connector characterized in that the upper power supply contact and the lower power supply contact are formed so that their respective overall lengths are the same, and the lengths of the portions in which the notches are formed are the same.

2. the upper power supply contact and the lower power supply contact have a joining portion joined to the substrate surface, 2. The floating connector according to claim 1, wherein the joint portion has a notch formed therein, and the notch forms the joint portion into a bifurcated shape in a plan view.

3. the plurality of pairs of signal contacts each comprise a pair of an upper signal contact and a lower signal contact, the pair being arranged such that the tip ends of the upper signal contact and the lower signal contact are aligned in the vertical direction; 3. A floating connector as described in claim 1 or 2, characterized in that, when viewed from the left and right side, the upper power supply contacts and the upper signal contacts are formed to have the same shape, and the lower signal contacts and the lower power supply contacts are formed to have the same shape.

Images