JP5448606B2 - Contact and socket using this contact - Google Patents

Description

  The present invention relates to a contact and a socket using the contact. More specifically, the present invention relates to a contact having a connection portion that comes into pressure contact with a wiring pattern of a printed wiring board and a socket in which the contact is incorporated.

In recent years, audio players such as portable audio players such as digital audio players, portable CD players, MD recorders, portable cassette players, portable cassette recorders, and microcassette recorders have become widespread. These portable audio players are usually connected to earphones so that music can be enjoyed by individual use.
These audio players and earphones are usually connected by a plug to which the earphones are connected and a jack mounted on the audio player. At present, there are plugs having a diameter of 2.5 mm and a plug having a diameter of 3.5 mm, and a plug of 3.5 mm is mainly used. The jack also has a socket that fits these plugs.

  The jack is also called a socket, but is usually fixed to a printed wiring board housed in the audio player casing. Until now, the printed wiring board and the jack have been fixed by soldering, but in order to increase the degree of freedom of mounting in the chassis, the solder built in the jack is not used for soldering. A device that is electrically connected by being brought into pressure contact with a wiring pattern of a substrate has been developed (for example, see Patent Documents 1 and 2 below).

For example, the following Patent Document 1 discloses a jack connection structure. This connection structure
The jack terminal is directly connected to the conductive portion of the main board so as to be connected. According to this connection structure, the soldering process is not required, and it is possible to absorb the misalignment between the printed wiring board and the device casing, so that the assemblability is improved and the design is also flexible.

  In Patent Document 2 below, the same jack is disclosed as an audio jack.

As shown in FIG. 15, the audio jack (hereinafter referred to as “jack”) 20 has a plurality of contacts 21 to 24 and a housing 25 that accommodates these contacts, and the housing 25 is inserted into a plug at one end. A mounting groove or the like in which a plurality of contacts are mounted is formed at the inlet and the other end. The plurality of contacts are a contact (hereinafter referred to as a signal contact) that is connected to an electrode of a plug (not shown) and transmits a predetermined signal, and a switch contact that operates by inserting the plug. The signal contact is composed of a plurality of contacts having different shapes. Hereinafter, one of the signal contacts 21 will be described. The signal contact 21 includes a housing fixing portion 21a fixed to the housing 25, and an elastic arm 21b provided with a plug connection portion that is bent from one end side of the housing fixing portion toward the fixing portion and connected to the plug electrode. , and a relatively long elastic tail 21c provided with the board connecting portion 21 ₁ in the end portion is bent substantially at a right angle from the other end side likewise housing fixing part. Other signal contacts have a similar configuration. These signals and contacts with the board connecting portions 21 _1, respectively are provided, these board connecting portion is incorporated into the housing so as to be positioned on the same plane. According to the jack of this configuration, by pressing and fixing the housing attached to the device casing to the printed wiring board, the socket is sandwiched between them, and the board connection portion of each contact of the socket is electrically connected to the wiring pattern, respectively. Is done.

Japanese Patent Laid-Open No. 11-185899 (paragraph [0017], FIG. 2) US Pat. No. 6,368,156 (middle of column 3, FIG. 1)

  Each of the jacks of Patent Documents 1 and 2 is configured such that a contact incorporated in the jack is electrically connected to the wiring pattern by placing the jack on a printed wiring board and pressing the jack with a device casing. And having the above-mentioned characteristics.

  In recent years, portable audio players such as digital audio players, portable CD players, and MD recorders have been used in various genres such as music, video, and recording on the software side, and have many functions, so-called multifunctionalization. In addition, there is a tendency to improve performance. In terms of hardware, there is a tendency for further miniaturization due to convenience because it is portable. As such portable audio players become more multifunctional, higher performance, and smaller, plugs and jacks (hereinafter collectively referred to as connectors) used for them are also similar. There is a demand for downsizing, in particular, reduction in height and thickness. However, when the design of a connector with a low profile and a low profile was advanced, the following problems were encountered when trying to realize a low profile, a low profile and a small size by adopting the conventional technology such as the jack technology disclosed in the above-mentioned patent document. It turned out to be.

(A) One of the problems is that in the jack of Patent Document 2, the plurality of contacts have different shapes and sizes, and the signal contacts are complicated in shape and large. . For example, the signal contact 21 includes a housing fixing portion 21a fixed to the housing, and an elastic arm 21b provided with a plug connection portion that is folded from one end of the housing fixing portion toward the fixing portion and connected to the plug electrode. The housing is fixed at a substantially right angle from the other end of the fixed portion of the housing, and has a relatively long elastic tail 21c. These shapes are complicated and the whole is relatively large. For this reason, the production of this contact becomes troublesome, and furthermore, since the housing must accommodate such a large contact, a space for it is required inside, and the housing is downsized, that is, the jack is small. It has become difficult.
(B) Another problem is that in the signal contact 21, the plug connection portion and the substrate connection portion are not on the same surface and are located on different surfaces, so that the distance between both connection portions is long and long. That is, since the electric circuit is greatly lengthened, the electric resistance value is increased, and transmission loss and voltage drop are increased.
(C) Further, since the plug connection portion and the board connection portion are electrically connected to the plug electrode and the wiring pattern on different surfaces, when the contact is subjected to vibration / impact, these connection portions are instantaneously disconnected. In other words, the probability of occurrence of so-called instantaneous interruption increases.
(D) Furthermore, since the shape of the signal contact is complicated, the shape of the housing is also complicated, and it is troublesome to incorporate into the housing, that is, to assemble.
(E) Furthermore, in recent years, it is possible to increase the voltage and increase the current capacity as compared with a 2.5 mm plug having a diameter of 3.5 mm. 3.5mm plugs are becoming mainstream. On the other hand, for miniaturization, there is a demand for realizing a 3.5 mm plug jack with a 2.5 mm jack size. However, such a request is extremely difficult to realize with the technique of Patent Document 1.2. In addition, since the jack described in the said patent documents 1 and 2 is also called alias socket, it is called a socket in the following description.

  Therefore, the present invention was made to solve such problems of the prior art, and an object of the present invention is to provide a contact suitable for reducing the height and thickness of a socket and a socket using this contact. There is to do. Specifically, the present invention is to provide a contact applicable to a 3.5 mm plug in the size of a conventional 2.5 mm socket, that is, a size, and a socket using this contact.

The object can be achieved by the following means. The invention relating to the contact according to claim 1 of the present application includes a housing fixing portion fixed to the socket housing, a plug connecting portion connected to the plug, and a board connected to the wiring pattern of the printed wiring board by pressure contact And a contact made of a metal plate material having a good conductivity, and a board contact piece having a relatively long elasticity extending from the housing fixing part, the board contact piece being The board connection portion that is press-contacted to the wiring pattern on one surface of the tip portion, and the plug connection portion on a surface opposite to the surface on which the substrate connection portion is provided away from the tip portion toward the housing fixing portion side. is provided, said substrate contact portion to be contacted to the printed wiring board surface is provided on the connecting portion between the housing fixing portion, and said board connecting portion and the substrate contact portion Above with plug connection is located between portions, wherein the portion of the plug connection is provided is curved upward from the same virtual surface in contact with the substrate contact portion and the board connecting portion.

According to a second aspect of the invention, in the contact of claim 1, wherein the plug connection has at least one linear which direction is raised to the surface of the substrate contact piece perpendicular to the longitudinal direction of the substrate contact piece It has a protrusion.

According to a third aspect of the present invention, in the contact according to the first or second aspect , the board contact piece has a side edge in a direction perpendicular to the longitudinal direction of the board contact piece of the plug connecting portion, that is, a plug is inserted. A guide portion is provided on the side end side.

According to a fourth aspect of the present invention, in the contact according to the third aspect , the guide portion is also provided on the opposite end side.

The invention according to the socket of claim 5 is provided with a socket housing provided on one side with an insertion port into which the plug is inserted and a space in the inside thereof in which a contact is accommodated in communication with the insertion port. The contact according to any one of claims 1 to 4 is accommodated in the space such that the board connecting portion and the plug connecting portion of the contact are located on a surface of the socket housing that contacts the printed wiring board surface. It is characterized by that.

  According to the first aspect of the present invention, in the contact having the substrate connection portion and the plug connection portion, the substrate connection portion is provided on one of the front and back surfaces of the substrate contact piece, and the plug connection portion is provided on the other surface. The distance between the board connecting portion and the plug connecting portion can be shortened. According to this configuration, it is possible to connect the plug and the wiring pattern of the printed wiring board at the shortest distance when connecting to the plug, and transmission loss and voltage drop can be reduced. In addition, the material can be easily saved and produced, and can be easily assembled into the socket. Furthermore, when this contact is mounted on the housing, the board contact portion and the plug connection portion can be disposed on the same wall surface side of the bottom wall surface side of the housing, so that the housing can be miniaturized, resulting in a low profile socket. Thinner. Furthermore, a plurality of contacts having the same structure can be used, and the space shape of the housing that accommodates them can be small, so that the size can be reduced. Furthermore, since this contact has a simple configuration, it can be easily assembled into the housing.

Further, since the plug connection portion is located between the substrate connection portion and the substrate contact portion and is curved above the same virtual plane where the substrate connection portion and the substrate contact portion are in contact with each other, the connection with the plug Sometimes the amount of deflection increases and good electrical connection with the plug electrode is maintained. In other words, since the contact is connected to the plug electrode and the wiring pattern from the front and back, the connection state is stably maintained, for example, it is difficult to disconnect instantaneously, even if vibration or impact is applied. Become.

According to the invention of claim 2 , the electrical connection with the plug electrode can be made surely and satisfactorily using the raised protrusion.

According to the third and fourth aspects of the invention, since the guide portion is provided, the plug can be easily inserted and removed.

According to the invention of claim 5 , since the contact is incorporated in the socket housing, the socket can be reduced in height and thickness, that is, reduced in size. For example, it is possible to provide a contact that can be applied to a 3.5 mm plug and a socket using this contact in the size of a conventional socket for 2.5 mm.

FIG. 1 is a perspective view of a socket according to an embodiment of the present invention. 2 is a front view of the socket of FIG. 1, FIG. 2A is a front view, FIG. 2B is a left side view of FIG. 2A, FIG. 2C is a right side view of FIG. Is a top view, FIG. 2F is a bottom view, and FIG. 2G is a bottom view of the bottom surface of FIG. 2F viewed from another angle. 3A is an enlarged bottom view obtained by rotating the bottom surface of FIG. 2F by 90 degrees and enlarged, and FIG. 3B is a schematic circuit diagram of a contact incorporated in the socket. FIG. 4 is a front view of the socket for explaining the size of the socket according to the embodiment of the present invention and the socket of the prior art. FIG. 5 is an exploded perspective view of the socket of FIG. FIG. 6 is a perspective view of the contact of FIG. FIG. 7 is a perspective view of one contact of FIG. 8 is a view of the contact of FIG. 7 from a predetermined direction, FIG. 8A is a side view seen from the longitudinal direction, FIG. 8B is a left side view of FIG. 8A, FIG. 8C is a right side view of FIG. FIG. 8E is a rear view. FIG. 9 is a perspective view showing a modification of the contact of FIG. FIG. 10 shows a contact of another modification, FIG. 10A is a perspective view of the contact of another modification, FIG. 10B is a side view for explaining a contact state between the contact and the plug of FIG. 10A, 11 shows a contact of another modification, FIG. 11A is a perspective view of the contact of another modification, and FIG. 11B is a side view for explaining a contact state between the contact and the plug of FIG. 11A. FIG. 12 is an explanatory view of attachment in which the socket is attached to the printed wiring board using the equipment casing. FIG. 13 is a connection explanatory diagram for connecting the plug to the socket. FIG. 14 is an explanatory diagram for explaining a contact state between the contact and the printed wiring board in relation to FIGS. 12 and 13. FIG. 15 is a perspective view of a prior art jack.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a contact for embodying the technical idea of the present invention and a socket incorporating the contact, and is not intended to specify the present invention. Rather, it is equally applicable to other embodiments within the scope of the claims.

The outline of the socket according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a socket according to an embodiment of the present invention and a plug inserted into the socket.
A socket 1 according to an embodiment of the present invention includes a socket housing 2 having an insertion port 3 into which a plug 16 is inserted on the front surface, and a plurality of contacts mounted on the socket housing. The contact according to the embodiment of the present invention is incorporated in the socket housing 2.

The plug 16 includes an electrode portion 16a provided with a plurality of electrodes, a plug housing 16b for supporting and fixing the electrode portion, and a lead wire 16c fixed to the rear of the plug housing and connected to the electrode. Yes. Electrode portion 16a includes a plurality of first through fourth electrodes _161-164, of these electrodes _161-164, the first to third electrodes ₁₆ 1 to 16 _3, predetermined diameter And a cylindrical electrode body having a predetermined length in the length direction and having a through hole therein, and the cylindrical electrode body is formed of a metal material of a good conductor. The fourth electrode 16 ₄ of the tip has a tip electrode portion of the bullet-shaped, and a rod-shaped conductor of thin rods extending rearward from the electrode portions are formed of a metal material of good conductor.

  A socket according to an embodiment of the present invention will be described with reference to FIGS. 2 is a view of the socket of FIG. 1 from a predetermined direction, FIG. 2A is a front view, FIG. 2B is a left side view of FIG. 2A, FIG. 2C is a right side view of FIG. 2E is a top view, FIG. 2F is a bottom view, FIG. 2G is a bottom view of the bottom of FIG. 2F viewed from another angle, FIG. 3A is an enlarged bottom view of the bottom of FIG. 2F rotated 90 degrees, and FIG. 4 is a schematic circuit diagram of a contact incorporated in the socket, FIG. 4 is a front view of the socket for explaining the size of the socket according to the embodiment of the present invention and the socket of the prior art, and FIG. 5 is an exploded perspective view of the socket of FIG. It is.

  As shown in FIG. 5, the socket 1 includes a socket housing 2 (hereinafter referred to as a housing) 2 provided with an insertion port 3 into which a plug 16 is inserted, and a plurality of contacts 10A to 10C attached to the housing. And 11-14. Hereinafter, these parts will be described in detail.

  As shown in FIGS. 2 and 5, the housing 2 has a rectangular bottom wall surface 2 a having a predetermined width and length, and side wall surfaces 2 b to 2 e erected at a predetermined height from the periphery of the bottom wall surface. These are made of a rectangular parallelepiped block having an upper wall surface 2f connecting the tops of these side wall surfaces, and are formed of an electrically insulating synthetic resin molding.

  Of these side wall surfaces 2b to 2e, the side wall surface 2d is provided on the outer wall surface of the casing of the portable device when the socket 1 is attached to a portable audio player (hereinafter referred to as a portable device or a device). The wall surface is exposed from the opening. The side wall surface, that is, the front wall 2d is formed as an inclined surface inclined at a predetermined angle, for example, an angle of about 80 °, from the bottom wall surface 2a toward the upper wall surface 2f. The angle of the inclined surface is determined in accordance with the shape of the casing of the portable device or the like. The front wall 2d is formed with an insertion port 3 into which the electrode portion 16a of the plug 16 is inserted. The housing 2 has a space of a predetermined size communicating with the insertion port. The insertion port 3 has a diameter of 3.5 mm, and a plug of 3.5 mm is inserted into this insertion port.

  The front wall 2d is provided with an insertion port of this size, but the area thereof is extremely smaller than that of the prior art in which a plug for a 3.5 mm diameter plug is provided. It is almost the same as the one with the entrance. Therefore, the distance between the insertion port and the upper bottom wall surface and the distance between the left and right side wall surfaces are extremely shortened, and as a result, the housing can be reduced in size, particularly reduced in height and reduced in thickness. This miniaturization will be described later.

  On the bottom wall surface 2a, as shown in FIG. 3, a ground contact mounting groove (hereinafter referred to as a GND contact mounting groove) 4 in which the ground contacts 10A are sequentially mounted from the front wall 2d side to the back wall 2e side, A right ear contact mounting groove (hereinafter referred to as an R contact mounting groove) 5 in which a right ear contact 10B connected to an electrode for a right ear earphone of the plug 16 is mounted, and a left ear contact mounting groove in which a left ear contact 10C is mounted. (Hereinafter referred to as L contact mounting groove) 6, a first switch contact mounting groove (hereinafter referred to as SW1 contact mounting groove) 7 in which the first switch contact 11 is mounted, and a microphone contact mounting groove (hereinafter referred to as SW1 contact mounting groove). , Called the MIC contact mounting groove) 9, the second switch contact in which the second switch contact 13 is mounted Mounting groove (hereinafter, SW2 contact attachment called groove) lock contact attachment grooves 15 to 8 and the lock contacts 14, is mounted are formed. Each mounting groove is an insertion groove into which a housing fixing portion of a contact, which will be described later, is inserted, and an accommodation groove that is connected to the insertion groove and accommodates a contact piece of a contact board. For example, the GND contact mounting groove 4 includes an insertion groove 4a into which a housing fixing portion of the contact is inserted, and an accommodation groove 4b of a substrate contact piece. Similarly, the other R contact mounting groove 5, L contact mounting groove 6, SW1 contact mounting groove 7, SW2 contact mounting groove 8 and MIC contact mounting groove 9 are also fitted into the fitting grooves 5a to 9a and the substrate contact piece receiving groove 5b. It consists of ~ 9b. A lock contact mounting groove 15 is formed on the upper wall surface 2f.

  A predetermined contact is mounted in each of the mounting grooves 4 to 9 and 15. As shown in FIG. 5 and FIG. 6, these contacts are a ground contact (hereinafter referred to as GND contact) 10A, a right ear contact (hereinafter referred to as R contact) 10B, a left ear contact (hereinafter referred to as L contact) 10C, A first switch contact (hereinafter referred to as SW1 contact) 11, a microphone contact (hereinafter referred to as MIC contact) 12, a second switch contact 13 (hereinafter referred to as SW2 contact) and a lock contact 14.

  Among these contacts, the GND contact 10A, the R contact 10B, and the L contact 10C each have a plug connection portion connected to each electrode of the plug 16 and a substrate connection portion connected to the printed circuit board. The connecting portion and the board connecting portion are arranged in the housing 2 so as to be positioned on the bottom wall surface 2 a side of the housing 2. These contacts 10 </ b> A to 10 </ b> C have substantially the same configuration except for the mounting location on the housing. In the GND contact 10A, a part 10a ′ of the housing fixing portion 10a is cut off. The cut portion 10a ′ (see FIG. 6) has a shape that matches the shape of the inclined surface because the front wall 2d of the housing is an inclined surface, but other configurations are the same as other contacts. It has become.

  Each of these contacts 10A to 10C has a plug connection part and a board connection part, and these plug connection part and board connection part are located on different surfaces in the prior art, whereas they are located on the same wall surface of the housing 2. Thus, it is disposed in the housing. Therefore, these contacts 10A to 10C have a configuration suitable for reducing the height and thickness of the socket.

  The GND contact 10A, R contact 10B, and L contact 10C will be described. These contacts are represented by contacts 10 and will be described with reference to FIGS. 7 is an overall perspective view of the contact, FIG. 8 is a view of the contact of FIG. 7 from a predetermined direction, FIG. 8A is a side view in the longitudinal direction, FIG. 8B is a left side view of FIG. 8A, and FIG. 8A is a right side view, FIG. 8D is a top view, and FIG. 8E is a rear view.

As shown in FIG. 7, the contact 10 has a housing fixing portion 10a that is fitted and fixed in the fitting groove of the housing, and is relatively linear in a predetermined width and length in one direction from a substantially central portion of one side of the housing fixing portion. and a strip-shaped board contact piece 10b having a long extended by elastic, the board contact piece 10b, and the plug connecting section 10 ₁ and the board connecting portions 10 _2, respectively are provided, the good conductivity of the plate-like body It is formed by punching and bending.

  The housing fixing portion 10a is formed of a rectangular plate-shaped piece having a predetermined length and a width, and having a predetermined area. This plate-shaped piece is adapted to the shape of the insertion groove of the housing. The housing fixing portion 10a stands up at a right angle from the joint with the substrate contact piece 10b, and is fitted and fixed in the fitting groove of the housing 2. The housing fixing portion 10a is formed wider than the substrate contact piece 10b. By making it wide, fixing to the housing becomes stable.

As shown in FIGS. 7 and 8A, the substrate contact piece 10b has a predetermined width length extending in a straight line from the substantially central portion of one side of the housing fixing portion in one direction and extending relatively long in a straight line. A substrate contact piece having back surfaces a and b, and gently bent downward as seen in FIG. 8A from the joint of the housing fixing portion 10a toward the tip, and the tip jumped upward. It has become. The substrate contact piece 10b has a substrate connection portion 10 ₂ on the back surface b of the tip portion, and a surface a at a substantially intermediate portion.
Plug connection 10 ₁ are provided each of which is curved substantially arcuate in. That is, the plug connection 10 ₁ of the intermediate portion is provided between the substantially board contact portion 10 ₃ beneath the board connecting portion 10 ₂ and the fixed portion of the tip, the contact with both the board connecting portions 10 ₂ and the substrate contact portion 10 ₃ It is curved so as to be slightly higher above the virtual plane. This curvature, a socket 1 that contact 10 is mounted is fixed to the printed wiring board, the board connecting portion 10 ₂ and the substrate contact portion ₁₀₃ comes into contact respectively on the printed wiring board surface, the intermediate portion plug connection 10 ₁ is lifted upward from the substrate surface. The fixed contact 10 which elasticity is imparted contacts in a stable condition on the substrate surface, yet the lifting of the plug connection 10 _1, good contact between the plug electrodes elastic force when the plug connection is increased And this state is maintained. Moreover, the plug connection portion 10 ₁ along the longitudinal direction of the substrate contact pieces 10b, are formed with raised projections 10 ₁ of Article obtained by raised portions of the surface. The raised projections 10 ₁ is formed by recessing a portion of the back surface. The tubular electrode of the plug 16, the raised projections 10 ₁ and the cross, i.e., are contacted in a direction perpendicular to the longitudinal direction of the substrate contact pieces 10b. Since this contact is a point contact between the cylindrical electrode and the raised protrusion, the electrical connection is ensured.

The contact 10 has the following characteristics by having the above-described configuration.
(A) contact 10, i.e. three contact 10A~10C each have a same configuration, the substrate contact pieces 10b of each contact, so the plug connection 10 ₁ and the board connecting portions 10 ₂ is provided on its front and back surfaces The material length can be shortened and the distance between the connection portions can be shortened as compared with the conventional technology in which the plug connection portion and the substrate connection portion are separately provided. Since the substrate contact piece is short, the material can be saved and processed easily, the mounting to the housing is facilitated, and the vibration resistance and impact resistance are improved. That is, the problem of the conventional technology can be solved.
(B) a contact when mounted on the housing 2, these plug connection 10 ₁ is disposed on the same wall surface of the bottom wall 2a side. As a result, the socket can be reduced in size, in particular, reduced in height and thickness. That is, since the board connecting portion and the plug connecting portion are substantially on the same plane, the housing can be reduced in size when assembled in the housing, and as a result, the socket can be reduced in height and thickness. Further, the contacts 10, that is, the three contacts 10 </ b> A to 10 </ b> C have the same configuration, and the space shape of the housing that accommodates them can be small, so that the size can be reduced. Furthermore, since these contacts 10A to 10C have a simple configuration, they can be easily assembled into the housing.

  This reduction in height and thickness will be described with reference to FIG. 4A is a front view of a conventional 3.5 mm plug socket, FIG. 4B is a front view of a 3.5 mm plug socket of the present invention, and FIG. 4C is a front view of a conventional 2.5 mm socket. .

As is apparent from FIGS. 4A to 4C, the socket 1 of the present invention is a size of a 2.5 mm plug socket according to the prior art and can be applied to a 3.5 mm plug. That is, the prior art 3.5 mm plug socket 1A has a lateral width W1 and a height H1, whereas the lateral width W and height H of the socket 1 of the present invention are W1> W and H1> H, This can be made substantially the same as the conventional 2.5 mm plug socket 1B. For example, if W1 is 9.0 mm and H1 is 5.2 mm, W is 7.2 mm and H is 4.2 mm. The area of the front wall 2d alone can be reduced by 10% or more, and the overall size is reduced to this ratio. Become.
(C) When the socket 1 incorporating a contact 10 fixed to the printed wiring board, and a board connecting portion 10 ₂ and the substrate contact portion ₁₀₃ comes into contact respectively on the printed wiring board surface, the plug connection 10 ₁ of the intermediate portion It is in a state of being lifted upward from the substrate surface. Thus, the contact 10 of the elastic force is imparted contacts in a stable condition on the substrate surface, yet the lifting of the plug connection 10 _1, the elastic force when the plug connection is increased good contact between the plug electrodes And this state is maintained.
(D) Therefore, since the contact is connected to the plug electrode and the wiring pattern from the front and back, the contact is not separated even when a vibration or impact is applied, and so-called instantaneous disconnection is difficult.
(E) By using the raised protrusions, the electrical connection with the plug electrode can be made reliably and satisfactorily.
(F) By providing a guide ear piece to be described later, the plug can be easily inserted and removed.

  The contact 10 has the above-described characteristics. However, it is possible to add additional characteristics by changing a part of the configuration.

  Hereinafter, several modifications of the contact 10 will be described with reference to FIGS. 9 is a perspective view of a contact according to a modification, FIG. 10 shows a contact according to another modification, FIG. 10A is a perspective view of the contact according to this modification, and FIG. 10B is a contact between the contact and the plug of FIG. 10A. 11 is a side view for explaining the state, FIG. 11 shows a contact of another modification, FIG. 11A is a perspective view of the contact of this modification, and FIG. 11B is a side view for explaining the contact between the contact and the plug of FIG. FIG.

  Since the contacts 100, 101, and 102 of these modified examples have the same configuration as the contact 10, the same reference numerals are given to the common configurations, and the duplicate description is omitted, and different configurations will be described.

  As shown in FIG. 9, the contact 100 has a width of the substrate contact piece 10b wider than that of the contact 10 and is provided with a narrow slit 10b ′ in a part of the central portion in the longitudinal direction. Is added to make Article 2. According to this contact, the contact with the printed wiring board and the contact with the plug 16 are improved by increasing the width of the board contact piece and increasing the protruding protrusion.

Other contact 101, as shown in FIG. 10A, as well as a raised protrusion 10 ₁ wider, is provided with a first guide lug 10 _R on the side of the point of contact insertion of the plug 16. According to the contact 101, upon insertion of the plug 16, becomes smooth contact with electrode 16 ₄ of the tip, in the state of being fully differential written, the electrical connection between the electrodes is maintained well.

In addition, as shown in FIG. 11, the other contacts 102 are formed by enlarging the width of the substrate contact piece to enlarge the raised protrusions, and providing guide ear pieces 10 _R and 10 _L on both sides. is there. According to the contact 102, the plug 16 can be easily inserted and pulled out, and in the fully inserted state, the electrical connection with each electrode is well maintained.

  Returning to FIGS. 5 and 6, the contacts other than the contacts 10A to 10C, that is, the SW1 contact 11, the MIC contact 12, the SW2 contact 13, and the lock contact 14 will be described.

  The SW1 contact 11 includes a housing fixing portion 11a that is inserted and fixed in a mounting groove of the housing, and an elastic band-like switch that is extended from the housing fixing portion in a single direction with a predetermined width and a relatively long length. It has a piece 11b and a belt-like substrate contact piece 11c having elasticity extending relatively long in the other direction, and is formed by punching and bending a highly conductive plate-like body.

The MIC contact 12 has substantially the same configuration as the contact 10. That is, a housing fixing portion 12a that is fitted and fixed in the fitting groove of the housing, and a belt-like shape that has a predetermined width and length in one direction from a substantially central portion of one side of the housing fixing portion and extends relatively linearly. and a substrate contact piece 12b of the substrate contact pieces 12b, respectively provided with plug connection ₁₂₁ and the board connecting portions 12 ₂ are formed by punching and bending processing of the highly conductive plate-like body .

  The SW2 contact 13 is paired with the SW1 contact 11 and has substantially the same configuration although the length and the arrangement location are different from this contact. That is, it is comprised by the housing fixing | fixed part 13a, the switch piece 13b, and the board | substrate contact piece 13c.

The lock contact 14 includes a pair of opposing housing fixing portions 14a and 14b and a connecting portion 14c that couples the fixing portions, and elastic contact portions 14 ₁ and 14 are formed on opposing surfaces of the housing fixing portions 14a and 14b. ₂ is formed.

  The socket 1 is assembled by inserting and fixing the contacts 10A to 10C and 11 to 14 in the mounting grooves 4 to 9 and 15 of the housing 2, respectively. When the respective contacts are assembled in the housing, the board contact pieces are housed in the housing grooves of the bottom wall surface 2a of the housing 2 so that the board connecting portions protrude from the bottom wall surface.

  With reference to FIGS. 12-14, the attachment to the apparatus housing | casing of a socket and the connection with a plug are demonstrated. 12 is a mounting explanatory diagram for attaching the socket to the printed wiring board using the device casing, FIG. 13 is a connection explanatory diagram for connecting the plug to the socket, and FIG. 14 is a contact and print related to FIGS. It is explanatory drawing explaining a contact state with a wiring board. Note that the contact 10 in FIG. 14 is a general term for the contacts 10A to 10C.

  As shown in FIG. 12, the socket 1 is mounted on the printed wiring board PWB and fixed by pressing the socket against the printed wiring board PWB with the device housing 17. The printed wiring board PWB has a predetermined size, and wiring patterns are formed on the surface thereof at locations corresponding to the board connecting portions of the contacts 10A to 10C and 11 to 13, respectively. The device casing 17 has a substantially box shape, and a U-shaped opening 17a having a size into which the front wall 2d portion of the socket 1 enters is formed on one side wall surface.

To attach the socket 1 to the printed wiring board PWB, first, the socket 1 is arranged so that the respective board connecting portions of the contacts 10A to 10C and 11 to 13 are in contact with the wiring pattern of the printed wiring board PWB ( 12B). In this state, as shown in FIGS. 14A and 14B, the contact 10 is in a free state in which the substrate contact piece 10b is gradually bent downward from the housing fixing portion 10a. That is, the board contact piece 10b is a spring piece that is gradually bent downward from the joint of the housing fixing portion 10a. From this state, force is applied to the device casing 17 from above to press the socket 1 against the printed wiring board PWB (see FIGS. 12C, 12D, and 14C). This pressing, contact 10, as shown in FIG. 14D, in contact with the wiring pattern board connecting portion 10 ₂ of the substrate contact pieces 10b, the substrate contact portion ₁₀₃ comes into contact with the surface of the printed wiring board PWB simultaneously, plug raised in an arc from the connecting portion 10 ₁ is the substrate surface, the portion in the rear portion of the insertion port 3, the state of protruding to the difference plug mouth 3 (see FIG. 12D). Accordingly, the device casing 17 and the printed wiring board PWB are fixed with the socket 1 interposed therebetween, and the mounting of the socket is completed.

When the plug 16 is inserted into the socket 1 mounted to the apparatus housing 17, the electrode of the plug 16 is in contact with the plug connection 10 _first contact 10, depressing the plug connection 10 ₁ part (see FIG. 14E ). This depressed, crushed is arcuately raised have plug connection 10 ₁ part, and the electrode and the plug connection 10 ₁ of the plug 16 is a reliable electrical connection by utilizing the elastic force by the collapse made, on the other hand, a board connecting portion 10 ₂ a wiring pattern on slides, and the electrode and the wiring pattern of the plug 16 are securely electrically connected.

DESCRIPTION OF SYMBOLS 1 Socket 2 Socket housing 3 Insertion holes 4-9, 15 Mounting groove 10, 10A-10C, 101, 102 Contact 10a Housing fixing part 10b Board contact piece 10 ₁ Plug connection part 10 ₂ Board connection part 10 ₃ Board contact part 10 _R , 10 _L guide ear piece 11, 13 Switch contact 12 Microphone contact 14 Lock contact 16 Plug 17 Equipment housing PWB Printed wiring board

Claims (5)

A contact having a housing fixing portion fixed to the socket housing, a plug connecting portion connected to the plug, and a board connecting portion connected to the wiring pattern of the printed wiring board, and made of a metal plate material having good conductivity. In
A board contact piece having a predetermined width and a relatively long elasticity is extended from the housing fixing part, and the board contact piece is press-connected to the wiring pattern on one surface of the tip part and the tip. The plug connecting portion is provided on the surface opposite to the surface on which the board connecting portion is provided away from the housing fixing portion side, and the connecting portion with the housing fixing portion is in contact with the printed wiring board surface. A substrate contact portion is provided, and the plug connection portion is located at an intermediate portion between the substrate connection portion and the substrate contact portion, and the portion where the plug connection portion is provided is the substrate connection portion and the substrate contact. A contact that is curved upward from the same virtual plane that contacts the part. The plug connection is according to claim 1, characterized in that it comprises at least one linear protrusions in the longitudinal direction as perpendicular to the raised surface of the substrate contact pieces of said substrate contact piece Contact. Said board contact pieces, characterized in that the guide portion is provided on the side end edges of the direction orthogonal to the longitudinal direction of the substrate contact pieces, Sunawa Chi, side edge sides plug is inserted in the plug connecting portion The contact according to claim 1 or 2 . The contact according to claim 3 , wherein the guide portion is also provided on an opposite end side. Comprising a socket housing provided with amount of space which contacts are accommodated in communication with the outlet and internal to the difference write port the plug is inserted into the one side, in the space, according to claim 1-4 Any one of the contacts is accommodated so that the board connecting portion and the plug connecting portion of the contact are located on the surface of the socket housing that contacts the printed wiring board surface.

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