JP2012230877A - Jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jack for securely detecting insertion of a plug even if a ground electrode of the plug is disposed in any position.SOLUTION: A jack 1 has a switch mechanism which is incorporated in an electrically insulated jack housing including a plug insertion hole and which consists of at least one signal contact, a first switch contact 8 including a first contact section 8c, and a second switch contact 9 including a second contact section 9cwhich is brought into contact with the first contact section. The first and second switch contacts have one switch contact, the switch contact 9, formed of an electrically conducted and elastically deformable arm piece and having an electrically insulated pusher 10 attached thereto in which a plug is slidably brought into contact with the switch contact consisting of the arm piece by insertion of the plug into a plug insertion hole 3 to displace the switch contact and cause the contact section of the switch contact to operate.

Description

  The present invention relates to a so-called jack in which a plug connected to an earphone, a microphone, or the like is inserted and connected, and more specifically, a jack having a plug insertion detection mechanism that can detect that a plug has been inserted into a plug insertion hole. It is about.

  A jack having a plug insertion detection mechanism is already known, and this plug insertion detection mechanism is roughly classified into the following two types. One type is to detect by making an electrical connection between the electrode of the plug and a contact disposed in the jack housing, and the other type is provided with a switch mechanism in the jack housing. It is detected by the operation of the mechanism.

  The former type is disclosed in Patent Document 1 below, for example. As shown in FIGS. 14A and 14B, the plug insertion detecting device disclosed in Patent Document 1 includes a four-pole terminal 17 to which a three-pole plug 15 is connected. The four-pole terminal 17 is disposed in a housing constituting a jack. However, when the plug 15 is inserted, the first and fourth terminals 17a and 17d are brought into contact with the grounding portion 16a of the plug, and when the plug 15 is inserted, at least the plug grounding portion 16a is contacted. The second and third terminals 17b and 17c are not provided. In the four-pole terminal 17, the voltage of the first pin 17 a of the four-pole terminal 17 becomes equal to the voltage of the power supply Vcc when the plug 15 is not inserted. In this state, when the three-pole plug 15 moves from the direction of arrow A and is inserted and connected to the four-pole terminal 17, the first pin 17a of the four-pole terminal 17 contacts the grounding portion 16a of the three-pole plug. The first pin 17a and the fourth pin 17d are short-circuited, and the voltage of the first pin 17a becomes 0V. Thereby, insertion of the three-pole plug 15 is detected with respect to the four-pole terminal 17. Note that the first to fourth pins 17a to 17d of the four-pole terminal 17 are contact terminals.

  The latter type is disclosed, for example, in Patent Documents 2 and 3 below. Among these Patent Documents 2 and 3, the plug insertion detection mechanism 20 of Patent Document 2 includes, as shown in FIGS. 15A to 15E, a first sleeve spring 22 incorporated in a housing 21 and a make spring 23 that is separated from and in contact with the first sleeve spring 22. The second sleeve spring 24 is configured so that even if one of the plugs for electric signals and optical signals is inserted into the plug insertion hole 21a, they can be identified and detected. The symbols p1 to p4 are electrodes provided on the electric signal plug, the electrode p1 is a ground electrode, and the first sleeve spring 22 and the make spring 23 constitute a switch mechanism, and these are switch contacts. It has become.

(B) Insertion detection of electrical signal plug When the electrical signal plug p is inserted into the plug insertion hole 21a, the action portion 22b of the first sleeve spring 22 is connected to the electrical signal plug p as shown in FIGS. 14A and 14B. The contact portion 22c behind the action portion 22b comes into contact with the contact portion 23b of the make spring 23 and is energized. By this energization, it is detected that any plug is inserted into the plug insertion hole 21a, and further, the first sleeve spring 22 and the second sleeve spring 24 are energized, so that the plug is an electric signal plug p. Is determined.

(B) Insertion detection of optical signal plug When the optical signal plug is inserted into the plug insertion hole 21a, the first sleeve spring 22 and the make spring 23 are energized in the same manner as when the electrical signal plug p is inserted. At this time, since the action portion 22b of the first sleeve spring 22 abuts on the peripheral side portion of the plug and retracts, the tip contact portion 24b of the second sleeve spring 24 also contacts the portion above the plug peripheral side portion. However, since the optical signal plug does not have a conductive member such as the sleeve electrode p4 in the electrical signal plug p on the circumferential side, the first sleeve spring 22 and the second sleeve spring 24 are not electrically connected to each other. It becomes conductive. As a result, when the first sleeve spring 22 and the make spring 23 are conducted, it is detected that a plug is inserted into the plug insertion hole 21a, but the first sleeve spring 22 and the second sleeve spring 24 are not connected. Since the conductive state is established, it is determined that the plug is not an electrical signal plug but an optical signal plug. In addition, the jack of the following patent document 3 can also detect insertion of an electric signal plug.

JP 11-288766 (paragraphs [0010], [0011], FIG. 1) JP 2007-323960 (paragraphs [0049] to [0053], FIG. 2) Japanese Patent Laying-Open No. 2011-9122 (paragraphs [0029] to [0032], FIG. 5)

  Any of the jacks disclosed in Patent Documents 1 to 3 can detect the insertion when the plug is inserted into the plug insertion hole by the plug insertion detection mechanism (device) incorporated in the housing. However, all of these plug insertion detection mechanisms detect plug insertion by electrical connection between the ground (ground) electrode of the plug and a contact disposed in the jack housing. The plug is limited to a plug having an electrode at a specific position, and insertion of the plug cannot be detected if the ground electrode is at a position (location) different from this position. That is, in the plug insertion detection device of Patent Document 1, since the plug grounding portion (ground electrode) and the two pins of the 4-pole terminal are short-circuited by the insertion of the plug, the plug insertion is detected by this short-circuit. Therefore, when the grounding portion of the plug is at a different position, insertion of the plug cannot be detected. Similarly, in the plug insertion detection mechanisms of Patent Documents 2 and 3, plug insertion is detected by electrical connection between the plug electrode and the switch contact constituting the switch mechanism and other contacts. Similarly, if the ground electrode of the plug is at a different location, the insertion of the plug cannot be detected.

  This type of plug is used by being connected to a jack provided in various electronic devices such as a digital audio player, a portable CD player, an MD recorder, a portable cassette player, a portable cassette recorder, and a micro cassette recorder. Naturally, the plugs used for these electronic devices are compatible with the respective electronic devices, but in recent years, these electronic devices have been incorporated with various functions to become multifunctional. Corresponding to this trend, plugs used for them are arranged in positions different from those of the conventional plugs as the number of electrodes increases. Among these plugs, in particular, those in which ground electrodes are arranged at positions different from those of conventional plugs have appeared. That is, in the conventional plug, the ground electrode is provided farthest from the tip electrode, that is, on the housing side, as shown in FIG. Yes. However, for example, in some countries such as Europe or the type of electronic equipment, there are some which are not located at this position but are provided between the tip electrode and the plug housing, that is, in the middle between the electrodes as shown in FIG. 13B. Among these plugs, the former type plug can detect the insertion of the plug with the jacks of Patent Documents 1 to 3, but these jacks cannot detect the insertion of the latter type of plug.

  In order to eliminate this inconvenience, it is conceivable to modify the jacks of Patent Documents 1 to 3 so that they can also be used for the latter type of plug. The modification generally becomes a method of changing the position of the contact or switch mechanism constituting the plug detection mechanism so that it can be used for such a plug, or a method of adding a similar plug detection mechanism. However, among these modifications, the former modification requires a dedicated jack for each plug with a different ground electrode position. For this reason, a jack for each plug is indispensable, resulting in an increase in the number of products and the management thereof is troublesome. Incurs high costs. Further, it is difficult to change the position of the switch mechanism in the jacks of Patent Documents 2 and 3, and if the switch mechanism is changed to a position close to the plug insertion port, noise may enter the ear through the earphone when the plug is inserted. In addition, the latter modification results in the incorporation of a plurality of plug detection mechanisms, and this incorporation leads to a large, complicated structure and high cost of the jack, which is not practical.

  Therefore, the present inventors have detected such a problem in the prior art jack, and in order to solve this problem, both the former and the latter type of plug insertion are detected, that is, they are commonly detected. In addition, even if the position of the plug electrode is changed, an attempt was made to modify the position of the other contact in the jack housing to correspond to the plug electrode in accordance with the change. In the process of this attempt, the conventional jack has detected the above problem since the plug insertion detection is performed by the electrical connection between the plug electrode and the contact in the jack housing. The plug electrode and the switch mechanism are not electrically connected by any plug electrode, and the switch is operated when the plug is inserted. The inventors have conceived that insertion can be detected and have completed the present invention.

  Accordingly, the present invention has been made on the basis of the above-mentioned knowledge by solving the problems of the conventional technology, and the object of the present invention is to provide a plug regardless of the position of the ground electrode of the plug. It is an object of the present invention to provide a jack that can reliably detect insertion of a jack.

  Another object of the present invention is that a switch mechanism for detecting plug insertion can be provided at an arbitrary position in the jack housing, and noise at the time of plug insertion can be reduced by providing this switch mechanism at a predetermined position. It is to provide Jack.

  Still another object of the present invention is to provide a jack in which signal contacts in the jack that can accommodate the plug electrode accompanying the change can be arranged in the jack housing even if the position of the plug electrode is changed.

  The object can be achieved by the following means. According to the jack of the first aspect of the present invention, in the electrically insulating jack housing having the plug insertion hole, the first switch contact provided with at least one signal contact and the first contact portion, and the above-mentioned In a jack incorporating a switch mechanism including a second switch contact provided with a second contact portion that contacts the first contact portion, the first and second switch contacts are at least one of the switches. The contact is formed of an electrically conductive elastically deformable arm piece, and the plug is slidably contacted and displaced by insertion of the plug into the plug insertion hole to the switch contact made of the arm piece. An electrically insulating pusher for operating the contact portion is mounted.

  The jack according to the second aspect is characterized in that, in the jack according to the first aspect, the pusher is attached to a substantially middle portion in the longitudinal direction of the switch contact.

  The jack according to a third aspect is the jack according to the first or second aspect, wherein the pusher is made of an electrically insulating synthetic resin molded body having a sliding surface on which the plug slides. The resin molded body is fixed to the switch contact by molding.

  According to a fourth aspect of the invention, in the jack of the first or second aspect, the pusher is formed by applying an electrically insulating resin to the switch contact.

  The fifth aspect of the invention is the jack of the first aspect, wherein the switch mechanism is configured such that the first and second contact portions of the first and second switch contacts are normally closed contacts or normally opened. It consists of a contact point, and is opened or closed by inserting a plug into the plug insertion hole.

  Further, the jack of the sixth aspect is the jack of the first aspect, wherein the signal contact and the first and second switch contacts are both a housing fixing part for fixing to the jack housing and a printed wiring board. Board contact legs provided with board contact parts to be contact-connected, and the jack housing has a predetermined size that communicates with the plug insertion hole and opens a surface to be placed on the printed wiring board. The jack housing accommodates the signal contact and the first and second switch contacts, the board contact leg is located on the opening side, and the board contact part is outward from the opening. It protrudes to

  According to the jack of the first aspect, since the plug electrode and the switch mechanism are not electrically connected when inserted into the plug insertion hole, the plug is inserted regardless of the position of the ground electrode of the plug. Can be reliably detected. Further, the switch mechanism can be provided at an arbitrary position in the jack housing, and noise at the time of plug insertion can be reduced by providing this switch mechanism at a predetermined position. Furthermore, even if the position of the plug electrode is changed, the signal contact in the jack that can cope with the plug electrode accompanying the change can be arranged in the jack housing.

  According to the jack of the second aspect, the operation of the switch mechanism becomes smooth when the plug is inserted.

  According to the jack of the third aspect, the pusher is firmly fixed to the switch contact.

  According to the jack of the fourth aspect, the pusher can be easily provided on the switch contact.

  According to the jack of the fifth aspect, in particular, by making the switch mechanism a normally closed contact, even if water enters, the switch mechanism can be operated to reliably detect the insertion of the plug.

  According to the jack of the sixth aspect, since the signal contact and the first and second switch contacts are arranged on the opening side of the jack housing, the board contact legs are reduced in height and size. it can. In addition, since the board contact portion protrudes outward from the opening of these contacts, the board contact portion is slid and moved on the wiring pattern of the printed wiring board by using the elasticity of the board contact leg portion of each contact. Can be electrically connected.

FIG. 1 shows a jack according to an embodiment of the present invention, FIG. 1A is a perspective view of a plug not inserted state, and FIG. 1B is a schematic view of arrangement of a plurality of contacts in the jack housing. 2 is a view of the jack of FIG. 1 from each predetermined direction. FIG. 2A is a bottom view, FIG. 2B is a front view, FIG. 2C is a rear view, FIG. 2D is a side view, and FIG. is there. FIG. 3 shows the jack of FIG. 2, FIG. 3A is a perspective view specifically showing the upper part and the periphery thereof, and FIG. 3B is a perspective view particularly showing the bottom face well. 4 is an exploded view of FIG. 3A, FIG. 4A is a perspective view of the jack housing, and FIG. 4B is a perspective view of the contacts. 5 is an exploded view of FIG. 3B, FIG. 5A is a perspective view of the jack housing, and FIG. 5B is a perspective view of the contacts. 6A is a perspective view of a GND contact, and FIG. 6B is a perspective view of an R contact. FIG. 7A is a perspective view of the MIC contact, and FIG. 7B is a perspective view of the SW1 contact. 8 shows the SW2 contact, FIG. 8A is a perspective view seen from one side, and FIG. 8B is a perspective view seen from the other side. 9 shows the SW2 contact of FIG. 8, FIG. 9A is a perspective view of the SW2 contact of FIG. 8 seen from another angle, and FIG. 9B is a perspective view of the pusher separated. 10A is a perspective view of an L contact, and FIG. 10B is a perspective view of a lock pin. 11A and 11B illustrate plug insertion detection. FIG. 11A is a cross-sectional view of a plug not inserted state, and FIG. 11B is a cross-sectional view of a plug inserted state. FIG. 12 is an arrangement schematic diagram of a plurality of contacts different from FIG. 1B. FIG. 13 shows a known plug, FIG. 13A is a side view of one type of plug, and FIG. 13B is a side view of another type. FIG. 1 shows a jack provided with a plug insertion detecting device according to the prior art, FIG. 14A is a schematic diagram of a plug not inserted state, and FIG. 14B is a schematic diagram of an inserted state. FIG. 15 shows a jack provided with another prior art plug insertion detection mechanism, FIG. 15A is a cross-sectional view of the back of the jack, FIG. 15B is a cross-sectional view of the jack, FIG. 15C is a cross-sectional view of the bottom of the jack, FIG. 15E is a cross-sectional view cut along a side surface.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a jack for embodying the technical idea of the present invention, and is not intended to specify the present invention, and is included in the scope of claims. It is equally applicable to those of other embodiments.

  With reference to FIG. 1, the outline | summary of the jack which concerns on embodiment of this invention is demonstrated. 1 shows a jack according to an embodiment of the present invention, FIG. 1A is a perspective view of a plug not inserted state, and FIG. 1B is a schematic view of arrangement of a plurality of contacts in the jack housing. A jack 1 according to an embodiment of the present invention includes a jack housing 2 provided with a plug insertion hole 3 into which a plug 13 is inserted and connected on the front surface, and a plug electrode portion 14 of the plug 13 incorporated in the jack housing, that is, a first electrode. First to fourth contacts 5 to 7 and 11 (see FIGS. 3 and 4) electrically connected to the first to fourth electrodes 14a to 14d, respectively, and the first and second switch contacts 8 and 9 (See FIGS. 3 and 4) and a lock pin 12 (see FIGS. 4 and 5) that is also incorporated in the jack housing 2 and prevents the plug 13 from coming off. The jack 1 has a structure that can be mounted on a printed wiring board (not shown).

  As shown in FIG. 1, the plug 13 includes a plug electrode portion 14 provided with a plurality of electrodes 14a to 14d, a plug housing 15 made of an electrically insulating material that supports and fixes the electrode portions, and a rear portion of the plug housing. And a lead wire 16 fixedly connected to the plurality of electrodes 14a to 14d. The electrode unit 14 includes first to fourth electrodes 14a to 14d, which are connected in order from the plug housing 15 toward the ground, for ground connection, for earphone right signal connection, for microphone signal connection, and for microphone left signal connection. Each electrode. These electrodes are connected to contacts GND, R, MIC and L in the jack. These electrodes are not limited to this order, but can be arbitrarily changed as described later. Among these electrodes, the first to third electrodes 14a to 14c are formed of a cylindrical electrode body having a predetermined diameter and a predetermined length in the length direction and provided with a through hole therein. The electrode body is formed of a metal material of a good conductor. The fourth electrode 14d at the tip has a bullet-shaped tip electrode portion and a thin rod-like conductor extending backward from the electrode portion, and is formed of a metal material of a good conductor. The diameter of this plug is, for example, 3.5 mm or 2.5 mm.

  The configuration of the jack in FIG. 1 will be described in detail with reference to FIGS. 2 is a view of the jack of FIG. 1 from a predetermined direction. FIG. 2A is a bottom view, FIG. 2B is a front view, FIG. 2C is a rear view, FIG. 2D is a side view, and FIG. FIG. 3 shows the jack of FIG. 2, FIG. 3A is a perspective view showing the upper part and its periphery in particular, FIG. 3B is a perspective view showing the bottom part in particular, and FIG. 4 shows FIG. 4A is a perspective view of the jack housing, FIG. 4B is a perspective view of the contact, FIG. 5 is an exploded view of FIG. 3B, FIG. 5A is a perspective view of the jack housing, and FIG. 5B is a perspective view of the contact. is there.

  As shown in FIGS. 2 to 5, the jack 1 includes a jack housing (hereinafter referred to as a housing) 2 provided with a plug insertion hole (hereinafter referred to as an insertion hole) 3 into which a plug 13 is inserted in the front, A plurality of mounted, for example, six contacts 5 to 11 and a lock pin 12 are configured. The plurality of contacts are first to fourth contacts 5 to 7 and 11 and first and second switch contacts 8 and 9. In this embodiment, of the first to fourth contacts, the first contact 5 is for ground connection (hereinafter referred to as GND contact), and the second contact 6 is for earphone right side signal connection (hereinafter referred to as R contact). The third contact 7 is for microphone signal connection (hereinafter referred to as MIC contact), and the fourth contact 11 is for earphone left signal connection (hereinafter referred to as L contact). The first switch contact (hereinafter referred to as SW1 contact) 8 and the second switch contact (hereinafter referred to as SW2 contact) 9 constitute a switch mechanism for detecting insertion of the plug 13.

  As shown in FIG. 2, the housing 2 has a rectangular bottom wall surface 2 a having a predetermined width and length, side wall surfaces 2 b to 2 e erected at a predetermined height from the periphery of the bottom wall surface, It consists of a rectangular parallelepiped block having an upper wall surface 2f that connects the tops of the side wall surfaces, and is 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 jack 1 is attached to a device such as a portable audio player (hereinafter also referred to as a portable device). It is a front wall (front wall) 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 casing shape of the portable device. In the front wall 2d, an insertion hole 3 into which the plug electrode portion 14 of the plug 13 is inserted is formed. The housing 2 has a space 4 of a predetermined size communicating with the insertion hole 3 therein. The space portion 4 is formed by a recessed hole that is recessed by a predetermined depth from the bottom wall surface 2a toward the upper wall surface 2f. The insertion hole 3 is sized so that a plug having a diameter of 3.5 mm or 2.5 mm can be inserted.

As shown in FIG. 5A, in the space 4 of the housing 2, that is, the inner wall surface of the recessed hole, the mounting grooves 4 ₁ , R in which the GND contacts 5 are mounted in order from the front wall 2d side to the back wall 2e side. mounting groove ₄ 2 contact 6 is attached, MIC contact 7 installation groove ₄ 3 is attached, L Contacts 11 attachment groove ₄ 4 is mounted, SW1 wear contact 8 is mounted grooves _{4 5} and SW2 Contacts 9 There mounting groove 4 ₆ are respectively formed to be mounted. Among these mounting grooves 4 ₁ to 4 ₆ , some mounting grooves 4 ₁ to 4 ₄ are formed on the side wall 2 c side, and the other mounting grooves 4 ₅ and 4 ₆ are formed on the other side wall 2 b side. . By dividing each mounting groove on both side walls, a plurality of contacts can be divided and arranged efficiently in the housing. Further, the upper wall 2f, mounting groove 4 ₇ the lock pin 12 is mounted _(see FIG. 4) is formed. Each of the mounting grooves 4 ₁ to 4 ₆ is an insertion groove having a size into which a housing fixing portion of a contact described later is press-fitted.

  These contacts will be described with reference to FIGS. 6A is a perspective view of the GND contact, FIG. 6B is a perspective view of the R contact, FIG. 7A is a perspective view of the MIC contact, FIG. 7B is a perspective view of the SW1 contact, FIG. 8 shows the SW2 contact, and FIG. 8B is a perspective view of the SW2 contact of FIG. 8, FIG. 9A is a perspective view of the SW2 contact of FIG. 8 from another angle, and FIG. 9B is a state in which the pusher is separated. FIG. 10A is a perspective view of an L contact, and FIG. 10B is a perspective view of a lock pin.

  A plurality of (six) contacts 5 to 7, 11, that is, a GND contact 5, an R contact 6, an MIC contact 7, and an L contact 11 are plugs connected to the first to fourth electrodes 14 a to 14 d of the plug 13. A plug connection arm portion having a contact portion, a substrate connection leg portion having a substrate contact portion connected to the wiring on the printed wiring board, and a housing fixing portion fixed to the housing 2, respectively. The portion is mounted and fixed in the housing 2 so that the portion is arranged on the bottom wall surface 2a side of the housing 2 and the plug contact portion is aligned on the inner wall surface side in the space portion 4 of the housing 2. ing. The SW1 contact 8 and the SW2 contact 9 also have a substrate contact portion and a housing fixing portion, and the substrate contact portion is disposed in the housing 2 so that it is disposed on the bottom wall surface 2a side of the housing 2. It has a fixed configuration.

  When the plurality of contacts 5 to 11 are mounted on the housing 2, the board connection leg portion of each contact is arranged on the bottom wall surface 2 a side, so that the jack can be miniaturized, in particular, low profile and thin. become. That is, since the board connecting legs are located on substantially the same plane, the housing can be reduced in size when assembled in the housing, and as a result, the jack can be reduced in height and thickness. Moreover, since these contacts can be inserted and inserted from the same bottom surface side, it is easy to mount and fix them in the housing. Hereinafter, the configuration of these contacts will be described in detail.

GND contact 5, as shown in FIG. 6A, a housing fixing portion 5a that fits fixed to the attachment groove 4 ₁ of the housing 2, and the board connection leg portion 5b having elasticity and extending from one side of the housing fixing part, the same and a plug connection arm portions 5c having elasticity and extending in the same direction by bending from the side, the substrate contact portion 5b ₁ and the plug contact with the tips of these board connection leg portion 5b and the plug connection arm portions 5c The portion 5c ₁ is provided and formed by punching and bending a highly conductive plate-like body. That is, the housing fixing portion 5a is formed of a rectangular plate-shaped piece having a predetermined length and a width, and having a predetermined area. The plate-like pieces is adapted to that according to the shape of the attachment groove 4 ₁ of the housing 2. The housing fixing part 5a is formed wider than the board connection leg part 5b and the plug connection arm part 5c. This wide width stabilizes the fixing to the housing 2. The board connection leg portion 5b is formed of a plate-like piece having elasticity that is bent at a substantially obtuse angle in one direction from one side of the housing fixing portion 5a and has a predetermined width and a relatively long linear shape. The plate-like piece, gently bent downward toward the distal end from the housing fixing portion 5a, and the shape of the tip jumped upward, the substrate contact portion 5b ₁ is provided on the end portion. When the jack 1 fitted with the contact 5 is fixed to the printed wiring board, the board contact portion 5b ₁ is in sliding contact with the wiring on the printed wiring board. Moreover, the plug connection arm portions 5c are allowed to bend as approaching from one side of the housing fixing portion 5a to the housing fixing portion, the plug contact portion 5b ₁ is provided at its tip.

R contact 6, as shown in FIG. 6B, similarly to the GND contact 5, and a housing fixing portion 6a which fits fixed to the attachment groove 4 housing _2, by bending into a substantially obtuse angle from one side of the housing fixing portion A board connecting leg 6b having elasticity having a predetermined width in one direction and extending relatively linearly, and a U-shaped plug having elasticity bent in a substantially U-shape from other opposing sides. And a board contact leg 6b ₁ and a plug contact part 6c ₁ provided at each end of the board connection leg 6b and the plug connection arm 6c, and punching and bending a highly conductive plate-like body. It is formed by.

MIC contact 7, as shown in FIG. 7A, similarly to the GND contact 5, and a housing fixing portion 7a is fitted fixed to the attachment groove 4 ₃ of the housing 2, by bending into a substantially obtuse angle from one side of the housing fixing portion A board connecting leg 7b having elasticity having a predetermined width in one direction and extending relatively linearly, and a U-shaped plug connection having elasticity bent in a substantially U-shape from other opposing sides. and a arm portion 7c, the substrate contact portion 7b ₁ and the plug contact portion 7c ₁ provided in each tip of the board connection leg 7b and the plug connection arm portions 7c, by punching and bending processing of the highly conductive plate-like body Is formed.

SW1 contact 8, as shown in FIG. 7B, a pair of housing fixing portion 8a fixed to the mounting groove 4 ₅ of the housing 2, and extends in a substantially obtuse angle to length linearly from one side of the housing fixing portion elastic And a switch arm portion 8c extending a predetermined length from the longitudinal direction of the same housing fixing portion, and a substrate contact portion 8b ₁ and a switch arm portion 8c at the tip of the substrate connection leg portion 8b. provided the tip contact portion 8c ₁ respectively, are formed by punching and bending processing of the highly conductive plate-like body. In more detail, the pair of housing fixing portion 8a is made substantially rectangular plate-like pieces of a relatively large area with a predetermined width dimension and length, sized to insert fixed to the attachment groove 4 ₅ of the housing 2 It has become. The plate-like pieces, so are relatively large area, fixed to the mounting groove 4 ₅ of the housing is stabilized. The board connecting leg portion 8b is formed of a plate-like piece having elasticity that is bent at a substantially obtuse angle in one direction from one side of the housing fixing portion 8a and has a predetermined width and extends linearly, and has a substrate contact portion 8b at the tip. ₁ is provided. Switch arms 8c consists arm piece that extends in the width dimension and the length of the end (longitudinal view) from a predetermined housing fixing portion 8a, the contact portion 8c ₁ at the tip of the arm piece is provided.

SW2 contact 9, as shown in FIGS. 8 and 9, similar to SW1 contact 8, housing a fixed portion 9a, a predetermined length at an obtuse angle from one side of the housing fixing portion for fixing the mounting groove 4 ₆ of the housing 2 A board connecting leg 9b having elasticity extending linearly and a switch arm piece 9c having elasticity extending a predetermined length from the other side of the same housing fixing part, A substrate contact portion 9b ₁ is provided at the tip, and a contact portion 9c ₁ is provided at the tip of the switch arm piece 9c, respectively, and is formed by punching and bending a highly conductive plate-like body. The switch arm piece 9c is provided with an electrically insulating pusher 10 in the middle thereof.

In more detail, housing fixing portion 9a is made substantially rectangular plate-like pieces of a relatively large area with a predetermined width dimension and length, sized to plug fixed to the mounting groove 4 ₆ of the housing 2 ing. The board connection leg portion 9b is formed of a plate-like piece having elasticity that is bent at a substantially obtuse angle in one direction from one side of the housing fixing portion 9a and extends in a straight line and has a long length, and has a substrate contact portion 9b at the tip. ₁ is provided. The switch arm piece 9c has elasticity that is long and linearly extended from one end of the housing fixing portion 9a, and has a longitudinal middle portion attached to the housing 2 in the direction of the plug insertion passage. an inflated a plate-shaped piece of "substantially bow" or "V-shaped", the contact portion 9c ₁ and the pusher 10 of electrically insulating the intermediate portion are respectively provided at the tip. That is, the switch arm piece portion 9c is substantially intermediate portion of the bulge in a direction away from the line connecting the contact point portion 9c ₁ housing fixing portion 9a bent to form "substantially dogleg" longitudinal direction and chevron protrusion 9c ₀ (See FIG. 9B). Then, the mound protrusion 9c _0, pushers 10 of the electrical insulating properties are attached. By providing the pusher 10 at the intermediate portion, the operation of the switch becomes smooth when the plug is inserted.

As shown in FIGS. 8 and 9, the pusher 10 is an insulating block having a sliding surface 10 a that is in contact with the electrode portion 14 of the plug 13 on one surface and a sliding surface 10 a on which the electrode portion slides and a fixing portion 10 b on the opposite surface. Is formed. Pusher 10 made of an insulating block is fixed with an integral fixed or any anchoring means with a resin molding the chevron protrusion 9c ₀ of the switch arm piece portion 9c. The pusher 10 is not limited to the resin insulating block, and may be formed by applying an insulating paint. SW2 contact 9 is incorporated in the housing 2 such that the normally closed contact of the contact portion 9c ₁ is always brought into contact with the contact portion 8c ₁ of SW1 contacts 8. By using the normally closed contact, when water enters the jack, the response is better than the normally open contact. This normally closed contact is opened when the plug electrode is brought into contact with and pushed against the pusher 10 by insertion of the plug.

L contacts 11, as shown in FIG. 10A, similarly to the MIC contact 7, and the housing fixing portion 11a for fixedly fitted to the mounting groove 4 ₄ of the housing 2, by bending into a substantially obtuse angle from one side of the housing fixing portion A board connection leg 11b having elasticity having a predetermined width length in one direction and extending relatively linearly, and a U-shaped plug connection having elasticity bent in a substantially U-shape from other opposing sides. and a arm portion 11c, the board contact portion 11b ₁ and the plug contact portion 11c ₁ is provided at each tip of the board connection leg 11b and the plug connection arm portions 11c, by punching and bending processing of the highly conductive plate-like body Is formed.

  As shown in FIG. 10A, the lock pin 12 has a substantially U shape having a pair of opposing elastic leg portions 12b and 12c and a connecting portion 12a for coupling these elastic leg portions, and has a thin rod shape having elasticity. It is formed by the body.

The jacks 1 are assembled by incorporating these contacts 5 to 11 into the housing 2. In assembling the jack 1, first, the contacts 5 to 11 are fitted into the mounting grooves 4 ₁ to 4 _{6 of the} housing 2 and fixed. The lock pin 12 completes the assembly is inserted fixed to the mounting groove 4 ₇ of the housing 2. As a result of the assembly, each of the contacts 5 to 11 has their board connection legs 5a to 11a disposed on the bottom wall surface 2a side of the housing 2, and each board contact leg 5a of each board connection leg 5a to 11a. ready _{for 1 ~11a 1} protrudes from the bottom wall 2a, also, each of the plug contact portions _{5c 1,} 6c _1, 7c 1 and 11c ₁ of each contact 5 to 11 are aligned in the same direction, i.e. the side walls 2c side It becomes a state. Furthermore, the SW1 and SW2 contacts 8 and 9 are in a state where the first and second contact portions 8c ₁ and 9c ₁ are aligned and contacted to the side wall 2b. The lock pin 12 has a predetermined gap between the lock pin and the L contact 11, and the tip of the plug 13 is held with a predetermined force by this gap. As a result of the assembly, the board connection leg portion of each contact is disposed on the bottom wall surface 2a side, so that the jack can be reduced in size, in particular, reduced in height and thickness. That is, since the board connecting legs are located on substantially the same plane, the housing can be reduced in size when assembled in the housing, and as a result, the jack can be reduced in height and thickness. Moreover, since these contacts can be inserted and inserted from the same bottom surface side, it is easy to mount and fix them in the housing.

The assembled jack 1 is mounted on a printed wiring board (not shown), and is fixed by pressing the jack 1 against the printed wiring board with a device casing. The printed wiring board has a predetermined size, and wiring patterns are formed on the surface thereof at locations corresponding to the board contact portions 5a _{1 to} 11a ₁ of the contacts 5 to 11. The device casing has a substantially box shape, and a U-shaped opening having a size into which the front wall 2d portion of the jack 1 enters is formed on one side wall surface. Therefore, the device housing and the printed wiring board are fixed with the jack 1 sandwiched therebetween, and the mounting of the jack is completed. By this mounting, the board contact portion slides on the wiring pattern, and the electrode of the plug 13 and the wiring pattern are reliably electrically connected.

When the plug 13 is inserted into the insertion hole 3 of the assembled jack 1, the plug electrodes 14 a to ₁₄ d come into contact with the plug contact portions 5 a _{1 to} 11 a ₁ of the contacts 5 to 11 in the housing 2. At the same time, the electrode portion 14 of the plug 13 abuts and slides on the fixed portion 10b of the pusher 10 of the SW2 contact 9, and the sliding surface 10a of the pusher 10 displaces the SW2 contact 9, so that the contact of the SW2 contact 9 the section 9c ₁ SW1 disconnected from the contact portion 8c ₁ of the contact 8, the electrical circuit has been in contact, conduction is OFF far. That is, before the plug 13 is inserted, the contact portion 9c ₁ and the contact portion 8c ₁ are in contact with each other as shown in FIG. 11A, and when the plug 13 is inserted, as shown in FIG. 11B, the contact portion 9c ₁ There electric circuit is OFF and disconnected from the contact portion 8c _1. By this OFF, it is detected that the plug 13 is inserted into the plug insertion hole 3.

  According to the jack 1, the plug insertion can be detected without the SW2 contact 9 being electrically connected to the electrode portion 14 of the plug 13. As a result, the insertion of the plug can be reliably detected regardless of the position of the ground electrode of the plug 13. Further, a switch mechanism for detecting insertion of the plug can be provided at an arbitrary position in the housing 2, and noise is reduced when the plug is inserted by providing this switch mechanism in a predetermined position, for example, near the plug insertion hole. Can do. Further, even if the position of the plug electrode is changed, the switch mechanism (contact) and the other contacts are separated from each other. Therefore, the signal contacts 5 to 7 and 11 in the jack that can correspond to the plug electrode accompanying this change are accommodated in the housing. 2 can be disposed. That is, as shown in FIG. 12, in the housing 2, the other contacts GND, MIC, R, and L can be changed regardless of the arrangement positions of the switch contacts SW1 and SW2. In this embodiment, the switch mechanism is configured as a normally closed contact, but may be a normally open contact.

1 jack 2 jack housing 3 plug insertion hole 4 space 4 ₁ to 4 ₇ mounting groove 5 ground connection contact 5a housing fixing part 5b board connection leg part 5b ₁ board contact part 5c plug connection arm part 5c ₁ plug contact part 6 right side of the earphone Signal contact 6b Substrate connection leg 6b ₁ Substrate contact portion 6c Plug connection arm 6c ₁ Plug contact portion 6 Microphone signal connection contact 6b Substrate connection leg 6b ₁ Substrate contact portion 6c Plug connection arm 6c ₁ Plug contact portion 8 1st switch contact 8a Housing fixing | fixed part 8b Substrate connection leg 8b ₁ Substrate contact part 8c Switch arm part 8c ₁ contact part 9 2nd switch contact 9a Housing fixing | fixed part 9b Substrate connection leg 9b ₁ board contact part 9c ₁ contact Part 10 Pusher 10a Sliding surface 11 Earphone left signal contact 12 Kupyn 11b substrate connecting legs 11b ₁ substrate contact portion 11c plug connection arm portions 11c ₁ plug contact portion 13 plug 14 electrode portions 14a~14d electrode

Claims (6)

A first switch contact provided with at least one signal contact, a first contact portion, and a second contact portion contacting the first contact portion in an electrically insulating jack housing having a plug insertion hole In a jack incorporating a switch mechanism comprising a second switch contact provided with
In the first and second switch contacts, at least one of the switch contacts is formed of an electrically conductive elastically deformable arm piece, and the switch contact formed by the arm piece is plugged into the plug insertion hole. An electrical insulating pusher is mounted for operating the contact portion of the switch contact by sliding and displacing the plug by inserting the plug.   The jack according to claim 1, wherein the pusher is attached to a substantially middle portion in a longitudinal direction of the switch contact.   The pusher is made of an electrically insulating synthetic resin molded body having a sliding surface on which the plug slides, and the synthetic resin molded body is fixed to the switch contact by molding. Item 3. The jack according to item 1 or 2.   The jack according to claim 1 or 2, wherein the pusher is formed by applying an electrically insulating resin to the switch contact.   In the switch mechanism, the first and second contact portions of the first and second switch contacts are normally closed contacts or normally open contacts, and are opened or closed by inserting a plug into the plug insertion hole. The jack according to claim 1, wherein:   The signal contact and the first and second switch contacts are each provided with a housing fixing part for fixing to the jack housing, and a board contact leg part provided with a board contact part for contact connection to the printed wiring board. The jack housing is provided therein with a space of a predetermined size that communicates with the plug insertion hole and opens a surface to be placed on a printed wiring board. The jack housing includes the signal contact and the first, 2. The jack according to claim 1, wherein a second switch contact is accommodated, the board contact leg portion is located on the opening side, and the board contact portion protrudes outward from the opening.

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