JP2020109733A - Electrical connector - Google Patents

Abstract

To provide an electrical connector in which reliability of electrical connection with a to-be-attached body is less likely to decrease.SOLUTION: A plug housing 210 includes: a plug base 220 having a plug seat surface 221 being in contact with one surface MS of a flexible printed circuit board FPC as a to-be-attached body; and a plug raised fitting portion 230 being raised from the plug seat surface 221 of the plug base 220, for fitting into a receptacle housing. A plug contact 240 has a counter electrode connecting portion 270 electrically connected to the flexible printed circuit board FPC. The plug base 220 is fixed to the flexible printed circuit board FPC through the counter electrode connecting portion 270 in a state where the plug raised fitting portion 230 is inserted into a raised fitting aperture HA of the flexible printed circuit board FPC and the plug seat surface 221 is in contact with the one surface MS of the flexible printed circuit board FPC.SELECTED DRAWING: Figure 4

Description

The present invention relates to an electric connector attached to a body to be attached.

As disclosed in Patent Document 1, there is known an electric connector including a main body fitted to a mating electric connector and a connection plate sandwiching a conductive cloth as an attached body between the main body and the main body. .. The connection plate is responsible for electrical connection between the main body and the body to be attached.

JP, 2005-135723, A

In the above electrical connector, a force of pulling the body by the mating electrical connector acts on the connection plate every time the body is pulled out from the mating electrical connector. Therefore, when the mating electrical connector is repeatedly fitted and removed, the connection plate may be deformed or damaged, which may reduce the reliability of the electrical connection with the attached body. ..

Incidentally, even if the connecting means that is responsible for the electrical connection with the attached body is not the above-mentioned connecting plate but is, for example, a conductive thread, an unreasonable force acts on the connecting means by the same mechanism, The reliability of the electrical connection with the attached body may be reduced.

An object of the present invention is to provide an electrical connector in which the reliability of electrical connection with an attached body is less likely to decrease.

In order to achieve the above object, the electrical connector according to the present invention,
Attached object having an electrode on at least one of one surface which is one surface in the thickness direction and the other surface which is the other surface in the thickness direction, and in which an opening penetrating in the thickness direction is formed An electrical connector attached to the body,
An insulative housing and a conductive contact held in said housing,
The housing is
A base having a seating surface that contacts the one surface of the mounted body;
A raised fitting portion that is raised from the seat surface of the base portion and that fits with a mating housing provided in the mating electrical connector;
Have
The contact is
A counter contact contact that is exposed from the raised fitting portion of the housing and makes electrical contact with a mating contact held in the mating housing when the raised fitting portion is fitted to the mating housing. Department,
A counter electrode connecting portion exposed from the base portion of the housing and electrically connected to the electrode of the attached body;
Have
When the raised fitting portion is inserted into the opening of the attached body and the seat surface of the base portion is in contact with the one surface of the attached body, the base portion passes through the counter electrode connecting portion. It is fixed to the attached body.

The counter electrode connecting part may fix the base part to the mounted body by the counter electrode connecting part by sandwiching the mounted body in the thickness direction.

The counter electrode connection portion,
An elastic piece that elastically presses against the one surface of the attached body,
When the object is penetrated from the one surface toward the other surface and is plastically deformed into a state of being bent so as to come into contact with the other surface, the object to be attached is sandwiched between the elastic piece. Folding pieces,
Have
In a state where the elastic piece and the bending piece sandwich the attached body, at least one of the elastic piece and the bending piece is in electrical contact with the electrode,
In the process of the plastic deformation, by the bending piece, the other surface, when the elastic piece is pressed with a force larger than the force that presses the one surface, the elasticity in the state of pressing the one surface. A retreat space for retreating the piece and the attached body in the direction from the other surface to the one surface may be secured.

The thickness of the bent piece is not less than the thickness of the elastic piece,
The width of the bent piece may be larger than the width of the elastic piece in a plan view perpendicular to the seat surface.

The attached body has the electrode on the one surface of the one surface and the other surface,
The elastic piece of the elastic piece and the bent piece may be in electrical contact with the electrode.

The contact has a plurality of the counter electrode connection portion,
A plurality of the counter electrode connecting portions are provided around a virtual center line of the raised fitting portion that passes through the position of the raised fitting portion and extends in a direction in which the raised fitting portion and the mating housing are fitted. They may be arranged at equal angles.

According to the above configuration, when the fitting between the raised fitting portion and the mating housing is released, the force with which the raised fitting portion is pulled by the mating housing pushes the seat surface of the base portion by one surface of the mounted body. Balance with power. Therefore, no unreasonable force acts on the counter electrode connecting portion. Therefore, the reliability of the electrical connection with the attached body is unlikely to decrease.

The perspective view of the snap button type electric connector pair which concerns on embodiment. Sectional drawing of the snap button type electric connector pair which concerns on embodiment. The perspective view of the snap button type receptacle connector concerning an embodiment. The top view of the snap button type receptacle connector concerning an embodiment. FIG. 3 is a perspective view showing a state of the snap button plug connector according to the embodiment before being inserted into the flexible printed board. The bottom view of the flexible printed circuit board concerning an embodiment. The perspective view of the snap button type plug connector concerning an embodiment. The top view of the snap button type plug connector which concerns on embodiment. The perspective view of the plug contact concerning an embodiment. The side view of the plug contact concerning an embodiment. FIG. 3 is a perspective view showing a state of the snap button type plug connector according to the embodiment after being inserted into the flexible printed board.

Hereinafter, a snap button type electrical connector pair according to an embodiment will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals.

As shown in FIG. 1, the snap button type electrical connector pair 300 according to the present embodiment is fitted to a snap button type receptacle connector (hereinafter abbreviated as a receptacle connector) 100 as a mating electrical connector and the mating electrical connector. And a snap button type plug connector (hereinafter abbreviated as a plug connector) 200 as an electric connector.

To facilitate the following description, a virtual center line VA extending in the direction in which the receptacle connector 100 and the plug connector 200 are fitted (hereinafter referred to as the fitting direction) is defined. The virtual center line VA passes through the centers of the receptacle connector 100 and the plug connector 200 in the plane orthogonal to the fitting direction.

As shown in FIG. 2, the plug connector 200 is attached to a flexible printed circuit (FPC) FPC as an attached body. The flexible printed circuit board FPC constitutes a probe. The flexible printed circuit board FPC as a probe is crimped to the wear worn by the user. The probe detects a biological signal emitted from the body of the user wearing the wear.

On the other hand, the receptacle connector 100 is attached to a rigid printed circuit board PC. The printed circuit board PC is not shown in FIG. The printed circuit board PC constitutes a transmitter. The transmitter puts the biological signal detected by the probe on an electromagnetic wave and outputs it to an external device such as a smartphone or a personal computer.

Although not shown, the printed circuit board PC has a structure in which a plurality of wires insulated from each other are formed. Similarly, the flexible printed circuit board FPC has a structure in which a plurality of wirings insulated from each other are formed. Specifically, in the present embodiment, each of the printed circuit board PC and the flexible printed circuit board FPC includes five wirings.

The snap button type electrical connector pair 300 plays a role of electrically connecting the five wirings included in the printed circuit board PC and the five wirings included in the flexible printed circuit board FPC.

The snap button type electrical connector pair 300 also serves as a snap button for mechanically attaching the printed circuit board PC as the transmitter to the flexible printed circuit board FPC as a part of the wear worn by the user.

That is, the receptacle connector 100 and the plug connector 200 are fitted in a snap fit manner, and when the two are fitted, even if the user makes a motion such as running, the flexible printed circuit board as a part of the wear. The mechanical and electrical connection of the printed circuit board PC to the FPC is maintained.

In addition, when washing the clothes, the user can remove the printed circuit board PC as the transmitter from the clothes by releasing the fitting between the receptacle connector 100 and the plug connector 200.

Hereinafter, the structure of the receptacle connector 100 will be specifically described.

As shown in FIG. 3A, the receptacle connector 100 includes a receptacle housing 110 as an insulating mating housing, and a receptacle contact 140 held by the receptacle housing 110 as a conductive mating contact.

The receptacle housing 110 has a receptacle base 120 having a receptacle seat surface 121 extending in a direction orthogonal to the virtual center line VA, and a protrusion from the receptacle seat surface 121 in a direction parallel to the virtual center line VA. Receptacle raised fitting portion 130 that fits with 200.

The receptacle protrusion fitting portion 130 has a shape that receives the plug connector 200 that enters along the virtual center line VA. Specifically, the receptacle protrusion fitting portion 130 includes a cylindrical main body 131 surrounding the virtual centerline VA, and a radial direction approaching the virtual centerline VA from an inner peripheral surface of the main body 131 facing the virtual centerline VA. And a protrusion 132 that protrudes inward.

As also shown in FIG. 3B, a plurality of protrusions 132 are arranged in a circumferential direction around the virtual center line VA at equal angles, specifically, five protrusions 132 are arranged. Grooves 133 that extend parallel to the virtual center line VA are defined by the protruding portions 132 that are adjacent to each other in the circumferential direction. A total of five groove ridges 133 are defined by the five protrusions 132 arranged in the circumferential direction.

Further, as shown in FIG. 3A, each protrusion 132 has an engaged portion 132a that protrudes radially inward closer to the virtual center line VA than the other portions of the protrusion 132. The positions of the engaged portions 132a of the five protrusions 132 are aligned in the height direction parallel to the virtual center line VA. The engaged portion 132a plays a role in suppressing the receptacle connector 100 from coming off from the plug connector 200.

Next, the receptacle contact 140 will be described. As described above, in response to the printed circuit board PC shown in FIG. 2 having five wirings, the receptacle connector 100 has five receptacle contacts 140. The five receptacle contacts 140 are held in the receptacle housing 110 while being insulated from each other.

As shown in FIG. 3A, each receptacle contact 140 has a counter plug contact contact portion 150 exposed in the groove 133 and a counter electrode connection portion 160 exposed from the receptacle base 120. The plug contact contact portion 150 electrically contacts the plug connector 200.

As shown in FIG. 2, the counter electrode connection portion 160 is electrically and mechanically connected to the printed circuit board PC by the solder SL. Although not shown, electrodes that form the end portions of the wiring are provided in the portions of the printed circuit board PC that are electrically connected to the respective counter electrode connection portions 160.

As shown in FIG. 3B, in a plan view parallel to the virtual center line VA, each receptacle contact 140 has a virtual center line VA of each of the plug contact contact portion 150 and the counter electrode connection portion 160 of the receptacle contact 140. Extends along a virtual extension line VB passing through the center in the direction parallel to the tangent line of the virtual circle centered at.

The virtual extension lines VB of the five receptacle contacts 140 intersect at the position of the virtual center line VA, and are arranged at equal angles θ=72° in the circumferential direction around the virtual center line VA. That is, the five receptacle contacts 140 are arranged in the circumferential direction around the virtual center line VA at equal angles θ=72°.

Therefore, by soldering each counter electrode connecting portion 160 to the printed circuit board PC, the receptacle connector 100 is fixed to the printed circuit board PC in a well-balanced manner and is less likely to wobble.

Next, prior to the description of the plug connector 200, the configuration of the flexible printed circuit board FPC to which the plug connector 200 is attached will be described.

As shown in FIG. 4, the flexible printed circuit board FPC is a plate having one surface MS that is one surface in the thickness direction parallel to the virtual center line VA and the other surface RS that is the other surface in the thickness direction. It is formed in a shape. The flexible printed circuit board FPC has a raised fitting portion opening HA penetrating in the thickness direction and a plurality of, specifically, five contact openings CA.

The raised fitting portion opening HA is formed at a position through which the virtual center line VA passes. The raised fitting portion opening HA is formed in a circular shape in a plan view parallel to the virtual center line VA.

The five contact openings CA are arranged around the raised fitting portion opening HA. Specifically, the five contact openings CA are arranged at equal angles in the circumferential direction around the virtual center line VA.

Each contact opening CA extends in a direction parallel to a tangent line of a virtual circle having a center on the virtual center line VA (hereinafter, referred to as a tangential direction). The tangential dimension of each contact opening CA is larger than the dimension in the direction orthogonal to the tangential direction.

As shown in FIG. 5, the flexible printed circuit board FPC has an electrode EP on one surface MS. The electrode EP constitutes each end of wiring (not shown) included in the flexible printed circuit board FPC. Corresponding to the flexible printed circuit board FPC having five wirings, five electrodes EP are provided on the one surface MS.

The electrode EP is arranged between the raised fitting portion opening HA and each contact opening CA. Specifically, the electrode EP extends, beside each contact opening CA, in a region including the edge of the contact opening CA.

Next, the plug connector 200 attached to the flexible printed circuit board FPC described above will be specifically described.

As shown in FIG. 6A, the plug connector 200 includes a plug housing 210 as an insulative housing and a plug contact 240 as a conductive contact held by the plug housing 210.

The plug housing 210 has a plug base 220 having a plug seat surface 221 as a seat surface extending in a direction orthogonal to the virtual center line VA, and a direction parallel to the virtual center line VA from the plug seat surface 221 of the plug base 220. And a plug ridge fitting portion 230 as a ridge fitting portion that is bulged to the inside.

The plug raised fitting portion 230 has a shape that fits with the receptacle raised fitting portion 130 of the receptacle connector 100 shown in FIGS. 3A and 3B. Specifically, the plug protrusion fitting portion 230 includes a cylindrical main body portion 231 having a virtual center line VA as a central axis, and a ridge projecting outward from the main body portion 231 in a radial direction orthogonal to the virtual center line VA. 232.

As also shown in FIG. 6B, a plurality of protrusions 232 are arranged in a circumferential direction around the virtual center line VA at equal angles, and specifically, five protrusions 232 are arranged. The five ridges 232 and the five groove 133 shown in FIGS. 3A and 3B have a one-to-one correspondence. Each ridge 232 engages with the corresponding groove ridge 133.

Further, as shown in FIG. 6A, the main body portion 231 has an engaging portion 231a extending in the circumferential direction around the virtual center line VA between the adjacent ridges 232.

The engagement portion 231a projects radially outward away from the virtual center line VA. The amount of protrusion of the engaging portion 231a outward in the radial direction is smaller than the amount of protrusion of the protrusion 232 outward in the radial direction. The engaging portion 231 a plays a role of suppressing the plug connector 200 from coming off from the receptacle connector 100.

Next, the plug contact 240 will be described. As described above, in response to the flexible printed circuit board FPC including the five electrodes EP, the plug connector 200 includes five plug contacts 240. Five plug contacts 240 are held in the plug housing 210 while being insulated from each other.

As shown in FIG. 7A, each plug contact 240 has a flat plate portion 250 formed in a flat plate shape. Each plug contact 240 is held by the plug housing 210 shown in FIG. 6A in a posture in which the flat plate portion 250 extends on a virtual plane orthogonal to the virtual center line VA.

Further, as shown in FIG. 7A, each plug contact 240 has a receptacle contact contact portion 260 rising from the flat plate portion 250. The anti-receptacle contact contact portion 260 is exposed from the plug protrusion fitting portion 230, as shown in FIGS. 6A and 6B. Specifically, the anti-receptacle contact contact portion 260 is exposed on the outer surface of the ridge 232 that is located on the outermost side in the radial direction orthogonal to the virtual center line VA.

When the plug connector 200 is fitted into the receptacle connector 100, the anti-receptacle contact contact part 260 electrically contacts the anti-plug contact contact part 150 shown in FIGS. 3A and 3B.

Hereinafter, the operation when the plug connector 200 is fitted to the receptacle connector 100 will be specifically described.

The plug ridge fitting portion 230 shown in FIGS. 6A and 6B enters the receptacle ridge fitting portion 130 shown in FIGS. 3A and 3B along the virtual center line VA. In the process of entry, each ridge 232 engages with the corresponding groove ridge 133. The fitting of the protrusion 232 and the groove 133 prevents relative rotation of the plug connector 200 and the receptacle connector 100 about the virtual center line VA.

As shown in FIG. 2, when the engagement between the plug protrusion fitting portion 230 and the receptacle protrusion fitting portion 130 is completed, each of the pair of receptacle contact contact portions 260 and the corresponding pair of plug contact contact portions 150 corresponds to itself. Make electrical contact. As a result, the wiring of 5 included in the printed circuit board PC and the wiring of 5 included in the flexible printed circuit board FPC are electrically connected.

At this time, the plug protrusion fitting portion 230 and the receptacle protrusion fitting portion 130 are fitted in a snap fit manner. Specifically, the engagement portion 231a of the plug raised fitting portion 230 is in a state of being caught by the engaged portion 132a of the receptacle raised fitting portion 130. As a result, the frictional force between the engaging portion 231a and the engaged portion 132a suppresses the plug ridge fitting portion 230 from coming off the receptacle ridge fitting portion 130.

Therefore, for example, even if the user makes an exercise such as running, the mechanical and electrical connection of the printed circuit board PC to the flexible printed circuit board FPC is maintained.

7A, the description of the plug contact 240 is continued. Each plug contact 240 also has a counter electrode connection portion 270 mechanically and electrically connected to the above-mentioned flexible printed circuit board FPC.

The counter electrode connection portion 270 has a bending piece 271 arranged at a position facing the pair of receptacle contact contact portions 260, and an elastic piece 272 arranged between the bending piece 271 and the pair of receptacle contact contact portions 260.

The bent piece 271 stands up from the flat plate portion 250 and faces the anti-receptacle contact contact portion 260. As will be described later with reference to FIG. 1, the bending piece 271 is bent toward the flat plate portion 250. FIG. 7A shows a state before the bending piece 271 is bent. The same applies to FIGS. 7B and 8 to be referred to later.

The elastic piece 272 extends in a direction (hereinafter, referred to as a facing direction) facing the bending piece 271 and the pair of receptacle contact contact portions 260 in a plan view perpendicular to the flat plate portion 250. As shown in FIG. 6B, the respective plug contacts 240 are arranged such that the facing direction is aligned with the radial direction orthogonal to the virtual center line VA.

As shown in FIG. 7A, the elastic piece 272 has a cantilever structure in which the end portion near the anti-receptacle contact contact portion 260 is connected to the flat plate portion 250, and the end portion near the bending piece 271 is a free end. doing. The width of the elastic piece 272 in the direction orthogonal to the facing direction is smaller than the width of the bending piece 271 in the direction orthogonal to the facing direction.

Each plug contact 240 is obtained by punching and pressing a single metal plate having a uniform thickness. The elastic piece 272 is cut and raised from the portion forming the flat plate portion 250. Therefore, in the flat plate portion 250, a through hole 280 having a size capable of accommodating the elastic piece 272 is formed at the position of the elastic piece 272.

As shown in FIG. 7B, the elastic piece 272 inclines in a direction away from the flat plate portion 250 as it approaches the free end nearer to the bending piece 271 from the end nearer to the receptacle contact contact portion 260. .. The elastic piece 272 has elasticity to return to the original state when it is pushed down toward the flat plate portion 250.

As shown in FIG. 6A, the bent piece 271, the elastic piece 272, and a part of the flat plate portion 250 of each plug contact 240 are exposed from the plug base 220. Then, the plug base 220 is fixed to the flexible printed circuit board FPC shown in FIGS. 4 and 5 through the bending piece 271 and the elastic piece 272.

Specifically, the bent piece 271 is plastically deformed to sandwich the flexible printed circuit board FPC together with the elastic piece 272 in the thickness direction. As a result, the plug base 220 is fixed to the flexible printed circuit board FPC by the bending piece 271 and the elastic piece 272.

As shown in FIG. 6B, in a plan view parallel to the virtual center line VA, each plug contact 240 has the above-mentioned plug contact 240 with respect to each of the pair of receptacle contact contact portions 260, the bending piece 271, and the elastic piece 272. It extends along a virtual extension line VC passing through the center in the tangential direction.

The virtual extension lines VC of the five plug contacts 240 respectively intersect the virtual center line VA, and are arranged at equal angles θ=72° in the circumferential direction around the virtual center line VA. That is, the five plug contacts 240 are arranged in the circumferential direction around the virtual center line VA with an equal angle θ=72°.

Therefore, when the flexible printed circuit board FPC shown in FIGS. 4 and 5 is sandwiched by the bent pieces 271 and the elastic pieces 272, the plug connector 200 is fixed to the flexible printed circuit board FPC in a well-balanced manner. Hard to wobble.

The procedure for attaching the plug connector 200 to the flexible printed circuit board FPC will be specifically described below.

As shown in FIG. 8, first, the plug raised fitting portion 230 is inserted into the raised fitting portion opening HA from one surface MS of the flexible printed circuit board FPC toward the other surface RS, and each bent piece 271 is attached. Insert into the contact opening CA.

Then, the plug seat surface 221 shown in FIG. 6A is brought into contact with the one surface MS of the flexible printed circuit board FPC. At this time, the elastic piece 272 shown in FIGS. 6A and 6B comes into contact with the electrode EP shown in FIG.

Next, as shown in FIG. 1, the bending piece 271 penetrating the flexible printed circuit board FPC is plastically deformed into a bent state so as to come into contact with the other surface RS. The bending piece 271 is bent in the direction toward the plug protrusion fitting portion 230.

As a result, the flexible printed circuit board FPC is sandwiched between the bent pieces 271 and the elastic pieces 272, and the plug connector 200 is mechanically connected to the flexible printed circuit board FPC, as shown in an enlarged view in FIG.

At this time, the elastic piece 272 is pressed from the bending piece 271 via the flexible printed circuit board FPC, and the elastic repulsive force as a reaction force against the pressing is applied to the bending piece 271 via the flexible printed circuit board FPC. Is given to. That is, the elastic piece 272 elastically presses against the electrode EP on the one surface MS of the flexible printed circuit board FPC. Therefore, the plug connector 200 is electrically connected to the flexible printed circuit board FPC through the elastic piece 272.

A retractable space SP in which the elastic piece 272 can be retracted is secured at a position facing the back surface of the elastic piece 272 opposite to the upper surface facing the flexible printed circuit board FPC. The retracted space SP includes a void inside the through hole 280 also shown in FIG. 7A.

Therefore, in the process of plastically deforming the bending piece 271, when the bending piece 271 presses the other surface RS with a force larger than the force with which the elastic piece 272 presses the one surface MS, the other surface RS is pressed to the one surface MS. The elastic piece 272 and the flexible printed circuit board FPC in the hit state recede in the direction from the other surface RS toward the one surface MS. As a result, the flexible printed circuit board FPC is sandwiched between the elastic piece 272 bent in the retracted space SP and the bent piece 271.

After the plug connector 200 is attached to the flexible printed circuit board FPC as described above, the flexible printed circuit board FPC with the plug connector 200 attached thereto is pressure-bonded to the wear worn by the user by heating. As a result, the plug base 220 is placed between the flexible printed circuit board FPC and the wear.

According to the plug connector 200 described above, the following effects can be obtained.

As shown in FIG. 4, in the plug base 220, the plug raised fitting portion 230 is inserted into the raised fitting portion opening HA of the flexible printed circuit board FPC, and the plug seat surface 221 is one surface MS of the flexible printed circuit board FPC. , And is fixed to the flexible printed circuit board FPC through the counter electrode connecting portion 270.

Therefore, when the plug protrusion fitting part 230 in the state of being fitted to the receptacle protrusion fitting part 130 shown in FIG. 2 is removed from the receptacle protrusion fitting part 130, the plug protrusion fitting part 230 causes the receptacle protrusion fitting part 230 to be engaged. The force pulled by the portion 130 balances the force with which the plug seat surface 221 is pressed by the one surface MS of the flexible printed circuit board FPC. Therefore, no unreasonable force acts on the counter electrode connecting portion 270. Therefore, the reliability of the electrical connection between the flexible printed circuit board FPC and the counter electrode connection portion 270 does not easily deteriorate.

Further, as described with reference to FIG. 2, the retractable space SP is secured at the position facing the back surface of the elastic piece 272, and in the process of plastically deforming the bending piece 271, the elastic piece 272 and the flexible printed circuit board FPC. However, it is possible to save in the save space SP. Therefore, it is possible to prevent the flexible printed circuit board FPC from being crushed by the bent pieces 271 and the elastic pieces 272 and to prevent an excessive compressive force from acting on the flexible printed circuit board FPC.

When the portion of the flexible printed circuit board FPC sandwiched by the bent piece 271 and the elastic piece 272 moves back into the retracted space SP, the flexible printed circuit board FPC may bend. Since the flexible printed circuit board FPC is made of a flexible material, it is not damaged even when it is bent.

Further, as shown in FIG. 6B, in a plan view perpendicular to the plug seat surface 221, the width of the bending piece 271 in the tangential direction is larger than the width of the elastic piece 272 in the tangential direction. Further, as described with reference to FIG. 7A, since the plug contact 240 is obtained from a single metal plate having a uniform thickness, the thickness of the bent piece 271 is equal to that of the elastic piece 272. Equal to

Therefore, the plastic deformation of the bent bending piece 271 is not restored by the elastic repulsive force of the elastic piece 272. That is, the force required to restore the plastic deformation of the bent bending piece 271 is larger than the elastic repulsive force of the elastic piece 272. Since the plastic deformation of the bending piece 271 is not restored, the bending piece 271 and the elastic piece 272 can be stably maintained in electrical and mechanical connection with the flexible printed circuit board FPC. Good workability when bending.

Further, the mechanical and electrical connection of the plug connector 200 to the flexible printed circuit board FPC as a part of the wear is realized by the bent piece 271 and the elastic piece 272 that sandwich the flexible printed circuit board FPC. Therefore, it is not necessary to use solder for mechanical and electrical connection to the flexible printed circuit board FPC. Therefore, the problem of the adverse effect of solder on the human body is avoided.

Although the embodiment of the present invention has been described above, the present invention is not limited to this. For example, the modifications described below are possible.

In the above-described embodiment, the plug raised fitting portion 230 of the plug connector 200 is inserted into the raised fitting portion opening HA of the flexible printed circuit board FPC. However, the receptacle raised fitting portion 130 of the receptacle connector 100 is connected to the flexible printed circuit board FPC. You may make it penetrate in the opening HA for protrusion fitting parts. That is, the receptacle connector 100 may be attached to the flexible printed circuit board FPC. In that case, the receptacle seat surface 121 contacts one surface MS of the flexible printed circuit board FPC.

In the above embodiment, the case where the raised fitting portion opening HA and the contact opening CA are formed in the flexible printed circuit board FPC has been illustrated. The attached body is not limited to the flexible printed circuit board FPC, and is made of a flexible material other than the flexible printed circuit board FPC, a conductive cloth, or a printed circuit board PC or other rigid material. Good. However, from the viewpoint of being able to retreat to the retreat space SP, the attached body is preferably made of a flexible material or a conductive cloth. A protrusion fitting portion opening HA through which the plug protrusion fitting portion 230 or the receptacle protrusion fitting portion 130 is inserted is formed in the mounted body. When the electrical and mechanical connection with the mounted body is realized by sewing or soldering to the mounted body, it is not necessary to form the contact opening CA in the mounted body.

In the above embodiment, the flexible printed circuit board FPC has the electrode EP only on one surface MS of the one surface MS and the other surface RS, and only the elastic piece 272 of the elastic piece 272 and the bent piece 271 electrically connects with the electrode EP. The case of contact with is illustrated. The flexible printed circuit board FPC has the electrode EP only on the other surface RS of the one surface MS and the other surface RS, and even if only the bending piece 271 of the elastic piece 272 and the bending piece 271 electrically contacts the electrode EP. Good. Further, the flexible printed circuit board FPC may have the electrodes EP on both the one surface MS and the other surface RS, and both the elastic piece 272 and the bent piece 271 may be in electrical contact with the electrode EP.

Although the number of the receptacle contacts 140 included in the receptacle connector 100 and the number of the plug contacts 240 included in the plug connector 200 is five in the above-described embodiment, the number is not particularly limited to five. When the number of wires that the snap button type electrical connector pair 300 conducts is n (where n is an arbitrary natural number of 2 or more), the number of receptacle contacts 140, the number of groove ridges 133, and the plug contacts. The number of 240 and the number of ridges 232 may be n.

The above embodiments are for explaining the present invention, and do not limit the scope of the present invention. The scope of the invention is indicated by the claims rather than the embodiments. Various modifications made within the scope of the claims and equivalent to the invention are considered to be within the scope of the present invention.

100... Receptacle connector (mating electrical connector),
110... Receptacle housing (mating housing),
120... Receptacle base,
121... Receptacle seat surface,
130... Receptacle raised fitting portion,
131... body part,
132... protrusion,
132a... the engaged portion,
133... groove,
140... Receptacle contact (counter contact),
150... contact part for plug contact,
160... Counter electrode connection part,
200...Plug connector (electrical connector),
210...Plug housing (housing),
220... plug base,
221... Plug seat surface (seat surface),
230... Plug raised fitting portion (raised fitting portion),
231, the main body,
231a... Engaging portion,
232...
240... Plug contact (contact),
250... flat plate part,
260... Contact part for receptacle contact (contact part for mating contact),
270... Counter electrode connection part,
271... Bending pieces,
272... Elastic piece,
280... through-hole,
300... Snap button type electrical connector pair,
FPC: Flexible printed circuit board (attached body),
MS... One side,
RS...the other side,
HA... Opening for raised fitting part (opening),
CA: Contact opening,
EP... electrode,
PC: Printed circuit board,
SL...Solder,
VA... virtual center line,
VB, VC... Virtual extension line,
SP: Evacuation space.

Claims (6)

Attached object having an electrode on at least one of one surface which is one surface in the thickness direction and the other surface which is the other surface in the thickness direction, and in which an opening penetrating in the thickness direction is formed An electrical connector attached to the body,
An insulative housing and a conductive contact held in said housing,
The housing is
A base having a seating surface that contacts the one surface of the mounted body;
A raised fitting portion that is raised from the seat surface of the base portion and that fits with a mating housing provided in the mating electrical connector;
Have
The contact is
A counter contact contact that is exposed from the raised fitting portion of the housing and makes electrical contact with a mating contact held in the mating housing when the raised fitting portion is fitted to the mating housing. Department,
A counter electrode connecting portion exposed from the base portion of the housing and electrically connected to the electrode of the attached body;
Have
When the raised fitting portion is inserted into the opening of the attached body and the seat surface of the base portion is in contact with the one surface of the attached body, the base portion passes through the counter electrode connecting portion. Fixed to the attached body,
Electrical connector. The counter electrode connecting portion sandwiches the mounted body in the thickness direction, whereby the base portion is fixed to the mounted body by the counter electrode connecting portion,
The electrical connector according to claim 1. The counter electrode connection portion,
An elastic piece that elastically presses against the one surface of the attached body,
When the object is penetrated from the one surface toward the other surface and is plastically deformed into a state of being bent so as to come into contact with the other surface, the object to be attached is sandwiched between the elastic piece. Folding pieces,
Have
In a state where the elastic piece and the bending piece sandwich the attached body, at least one of the elastic piece and the bending piece is in electrical contact with the electrode,
In the process of the plastic deformation, by the bending piece, the other surface, when the elastic piece is pressed with a force larger than the force that presses the one surface, the elasticity in the state of pressing the one surface. An evacuation space for retreating the piece and the attached body in the direction from the other surface to the one surface is secured,
The electrical connector according to claim 2. The thickness of the bent piece is not less than the thickness of the elastic piece,
In a plan view perpendicular to the seat surface, the width of the bent piece is larger than the width of the elastic piece,
The electrical connector according to claim 3. The attached body has the electrode on the one surface of the one surface and the other surface,
The elastic piece of the elastic piece and the bent piece is in electrical contact with the electrode,
The electrical connector according to claim 3 or 4. The contact has a plurality of the counter electrode connection portion,
A plurality of the counter electrode connecting portions are provided around a virtual center line of the raised fitting portion that passes through the position of the raised fitting portion and extends in a direction in which the raised fitting portion and the mating housing are fitted. Arranged at equal angles,
The electrical connector according to any one of claims 1 to 5.