JP2013152842A - Coaxial connector with switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial connector with a switch that has simple constitution, enhances use durability while avoiding size increase, and excellently prevents an electric connection defect due to dust.SOLUTION: A coaxial connector with a switch is configured to improve cleanness of contact parts of a pair of contacts 12 and 13 extending in a cantilever state from an insulation housing 11 to face each other by excellently securing what is called a wiping action to keep electric conductivity by a scraping action made by rubbing of both the contact parts against each other by making a slide distance between the contact parts long when the contact parts come into contact with each other by extending tip parts of the contacts 12 and 13 having the contact parts substantially in parallel while securing flexibility of both the contacts 12 and 13 by providing a crank part 12a1 to an elastic arm part 12a of at least one of the pair of contacts 12 and 13.

Description

  The present invention relates to a coaxial connector with a switch provided with a pair of contacts which are brought into a separated state by fitting a mating connector.

  Generally, a coaxial connector with a switch is used in an electronic device such as a mobile phone or an electric device. This coaxial connector with a switch is used, for example, as a small circuit inspection switch for inspecting the state and performance of various electronic circuits such as a high-frequency circuit provided in the device. The circuit inspection switch disclosed in No. 2 and the like is composed of a coaxial connector with a switch mounted on a circuit board so as to divide an electronic circuit of a device body, and is inserted into a mating connector provided in the coaxial connector with a switch A probe (inspection needle) of an inspection plug connector as a mating connector is inserted into the inside from above through the hole.

  In such a coaxial connector with a switch, a conductive shell for ground connection is attached to the outer side of the insulating housing, and a plurality of board connecting portions protruding integrally from the conductive shell are not shown. By being solder-bonded to the conductive path on the wiring board, the mounting is performed and used. At this time, a contact pair consisting of a movable contact for signal transmission and a fixed contact is attached to the inside of the insulating housing, and the pair of movable contact and fixed contact are provided in an electronic circuit ( (Not shown) are connected to one side and the other side.

  Then, the tip end portion of the probe (inspection needle) of the inspection plug connector inserted from the upper side pushes the free end portion of the movable contact swinging in a substantially horizontal plane with respect to the coaxial connector with switch. Accordingly, the movable contact swings and is separated from the fixed contact, and the original electronic circuit is divided. At the same time, the movable contact 1 comes into contact with the lower end portion of the probe, whereby the probe is brought into conduction with the other electronic circuit of the device body, and an electrical signal from the electronic circuit is taken out through the probe. For example, an appropriate inspection is performed.

  However, in such a conventional coaxial connector with a switch, there is a risk of permanent deformation of the contact due to repeated insertion of the probe (inspection needle) of the inspection plug connector, which causes a problem in durability. In order to improve the durability of use, a means to increase the elasticity by increasing the span of the contact in the horizontal direction or the vertical direction is also considered, but simply increasing the length of the contact will increase the size of the entire connector. This is contrary to the demand for downsizing and low profile. In addition, there is a possibility that dust such as fine dust or insulation existing in the operating atmosphere may enter the inside through the insertion hole of the probe (inspection needle) of the plug connector for inspection and cause poor electrical connection. There is also. In particular, since one of the contacts is in a fixed state and the slidability between the contacts is small, there is a tendency that the dust adhering to the surface of the contact cannot be sufficiently removed, and the connection tends to be shifted to a poor connection state.

JP 09-245907 A JP 2002-359039 A

  Accordingly, the present invention provides a switch with a simple configuration that can prevent the increase in size and improve the durability of use while preventing the occurrence of poor electrical connection due to dust entering the inside. An object is to provide a coaxial connector.

  In order to achieve the above object, the present invention comprises a pair of contacts that extend in a cantilevered manner from a fixed portion with an insulating housing so as to face each other, and are provided at the tip portions of the pair of contacts. One of the pair of contacts is moved in the pressing direction by the pressing force of the mating connector inserted through the insertion hole provided in the insulating housing. In the coaxial connector with switch configured to be separated from the other contact, both of the pair of contacts include a flexible elastic beam-like member extending in a cantilever manner from the fixed portion. The elastic beam-like member in at least one of the pair of contacts is inserted into the mating connector. And the tip portions of the pair of contacts having the contact portions are substantially parallel to each other in a direction inclined with respect to the direction in which the pair of contacts face each other. An extended configuration is adopted.

  According to the coaxial connector with a switch having such a configuration, the elasticity of the contact against the pressing force of the mating connector is enhanced by the crank portion provided on at least one of the flexible contacts. In addition, since the tip portions of the pair of contacts having contact portions extend substantially in parallel, when the contact portions contact each other, the sliding distance between them is maintained long, and the contact portions rub against each other. The so-called wiping action, which retains conductivity by the scraping action, is ensured satisfactorily, and the cleanliness at the contact portion is improved.

  In the present invention, it is desirable that the tip portions of the pair of contacts having the contact portion extend in a direction inclined with respect to a direction in which the pair of contacts face each other.

  According to the coaxial connector with a switch having such a configuration, dust such as dust generated or attached at the tip portion of the contact having the contact portion can easily move along the inclined surface. The staying state of the dust which harms is reduced.

  In the present invention, it is desirable that one of the contact portions provided on the pair of contacts protrudes toward the other.

  According to the coaxial connector with a switch having such a configuration, the scraping action when the two contact portions rub against each other is strengthened, and the so-called wiping action is further enhanced.

  Further, in the elastic beam-like member of the one contact according to the present invention, a through hole is formed at a site where the mating connector comes into contact, and the through hole forms an opening on the side facing the mating connector. It is desirable that a chamfered portion having an inclined surface is provided on the inner peripheral edge portion.

  According to the coaxial connector with a switch having such a configuration, dust such as dust dropped on one contact is discharged outward from the inclined chamfered portion of the through hole through the through hole, and to the mating connector. Thus, the inner peripheral edge of the through hole comes into contact with both sides of the through hole in the diagonal direction, and the contact between the mating connector and the contact is enhanced.

  Moreover, it is desirable that the through hole in the present invention is formed to have a long hole shape extending along the longitudinal direction of the elastic beam member.

  According to the coaxial connector with a switch having such a configuration, the elastic region of the elastic beam-like member is expanded along the through hole having a long hole shape. Enhanced.

  As described above, the coaxial connector with a switch according to the present invention is provided with a crank portion on at least one elastic beam-like member of a pair of contacts that extend in a cantilevered manner from an insulating housing and allow both contacts. While ensuring flexibility, extending the tip part of the contact having the contact part substantially in parallel increases the sliding distance between the contact parts when they come into contact with each other, and scrapes when the two contact parts rub against each other. It is configured to maintain the conductivity by dropping action, so as to ensure the so-called wiping action and improve the cleanliness at the contact part. The reliability of the coaxial connector with switch can be improved by preventing the occurrence of poor electrical connection due to dust entering the inside. It is possible to increase at a low cost and significantly.

It is an external appearance perspective explanatory view when the whole structure of a coaxial connector with a switch which constitutes a circuit inspection switch concerning one embodiment of the present invention is seen from the front upper part side. It is an external appearance perspective explanatory view when the whole structure of the coaxial connector with a switch concerning one embodiment of the present invention shown in Drawing 1 is seen from the front lower side. It is a plane explanatory view of the coaxial connector with a switch concerning one embodiment of the present invention shown in FIG.1 and FIG.2. It is front explanatory drawing of the coaxial connector with a switch concerning one Embodiment of this invention shown by FIG. 1 thru | or FIG. FIG. 5 is an external perspective explanatory view when one contact used in the coaxial connector with switch according to the embodiment of the present invention shown in FIGS. 1 to 4 is viewed from the upper front side. FIG. 6 is an external perspective explanatory view when one contact shown in FIG. 5 is viewed from the front lower side. FIG. 5 is an external perspective explanatory view when the other contact used in the coaxial connector with switch according to the embodiment of the present invention shown in FIGS. 1 to 4 is viewed from the upper front side. FIG. 8 is a perspective explanatory view of an external appearance when the other contact shown in FIG. 7 is viewed from the lower front side. FIG. 5 is a longitudinal sectional explanatory view showing a state in which a mating connector (inspection plug connector) is inserted into the coaxial connector with switch according to the embodiment of the present invention shown in FIGS. 1 to 4. FIG. 10 is a longitudinal sectional explanatory view showing a state in the middle of removing the mating connector (inspection plug connector) from the state of FIG. 9; FIG. 11 is a longitudinal sectional explanatory view showing a state in which the mating connector (inspection plug connector) is further removed upward from the state of FIG. 10. It is a fragmentary longitudinal cross-section explanatory drawing which expanded and represented the A section in FIG. It is a partial longitudinal cross-sectional explanatory drawing which expanded and represented the B section in FIG.

  Hereinafter, an embodiment in which a coaxial connector with a switch according to the present invention is employed as a circuit inspection switch will be described in detail with reference to the drawings.

[Overall structure of circuit inspection switch]
A coaxial connector with switch 10 according to an embodiment of the present invention shown in each drawing is mounted on a printed wiring board (not shown), and is connected to a counterpart connector with respect to the coaxial connector with switch 10. The inspection plug connector 20 (see FIGS. 9 to 11) is fitted from the upper side or pulled out toward the upper side. That is, the inspection plug connector 20 arranged on the upper side of the switch-equipped coaxial connector 10 is pushed downward with an appropriate force toward the switch-equipped coaxial connector 10 while being gripped by the operator's hand. The both connectors 10 and 20 are put into a fitted state. Further, when the connectors 10 and 20 are mounted, the test plug connector 20 is grasped and pulled upward with an appropriate force, so that the test plug connector 20 is detached from the switch-equipped coaxial connector 10 upward. The extraction is performed.

  The above-described inspection plug connector 20 is not limited to being inserted / removed by the operator's hand, and may be automatically inserted / removed by a machine. Hereinafter, the insertion direction and the extraction direction of the inspection plug connector 20 are referred to as “downward direction” and “upward direction”, respectively.

  The coaxial connector 10 with a switch constituting the assembly of such a circuit inspection switch is used by being mounted by soldering on an electronic circuit board (not shown) provided in an electronic device such as a mobile phone, for example. The electronic circuit provided in the electronic device is arranged so as to divide or connect the device main body side and the antenna side, for example. In the following description, it is assumed that the electronic circuit board extends in the horizontal direction.

[Insulation housing configuration]
Here, the insulating housing 11 constituting the main body of the above-described coaxial connector with switch 10 is, for example, molded using a resin material such as plastic, and is formed from a plate-like member having a substantially rectangular plane. The base frame body portion 11a and the insertion guide portion 11b disposed at the center of the upper surface of the base frame body portion 11a are integrally provided.

  The insertion guide portion 11b is formed so as to rise upward in a substantially cylindrical shape from the upper surface of the base frame portion 11a. The inner peripheral surface of the insertion guide portion 11b is formed to have a substantially mortar shape, and is inserted into the center portion from the annular outer peripheral edge portion formed at the upper edge portion of the insertion guide portion 11b. An inclined guide surface 11d extending obliquely downward toward the upper surface side opening of the probe insertion hole 11c provided as a hole is formed. The inclined guide surface 11d has a function of guiding the probe 20a provided in the above-described inspection plug connector 20 toward the probe insertion hole 11c, and the probe 20a of the inspection plug connector 20 is connected to the probe insertion hole. Even if the tip of the probe 20a is brought into contact with the inclined surface of the inclined guide surface 11d, the tip of the probe 20a is lowered along the inclined guide surface 11d. So that the probe is smoothly guided to the probe insertion hole 11c.

  As described above, the probe insertion hole 11c provided as the mating connector insertion hole extends downward from the upper end opening of the insertion guide portion 11b along the central axis of the base frame body portion 11a. It is provided so that it may open from the upper side with respect to the contact insertion channel | path 11e provided so that between between and a back surface may be penetrated substantially horizontally. The probe insertion hole 11c is arranged so as to be positioned immediately above one of the contacts 12 to be described later, and has a substantially planar planar shape having an inner diameter that allows the probe 20a of the inspection plug connector 20 to be inserted. It is formed as follows. Further, the above-described insertion guide portion 11b is disposed substantially concentrically around the upper surface side opening of the probe insertion hole 11c.

  Further, the base frame body portion 11a of the insulating housing 11 is provided with a contact insertion passage 11e so as to penetrate the central portion of the base frame body portion 11a substantially horizontally, and the front side of the contact insertion passage 11e. The first contact (one contact) 12 for signal transmission is from the opening of the second, and the second contact (second contact) 13 for signal transmission is from the opening on the back side of the contact insertion passage 11e. The contact insertion passages 11e are respectively inserted and attached.

[About contact configuration]
That is, the first contact (one contact) 12 and the second contact (the other contact) 13 for signal transmission are inserted in and removed from the above-described inspection plug connector 20 as the mating connector (vertical direction). ) In a horizontal direction substantially orthogonal to (). Hereinafter, a direction (horizontal direction) in which the first contact 12 and the second contact 13 face each other is simply referred to as a “contact facing direction”, and a direction toward the other contact in each of the contacts 12 and 13 is “ “Front” and the opposite direction are “rear”.

  The first contact 12 and the second contact 13 constitute a so-called contact pair, and are inserted so as to face each other from the front and back end surfaces of the insulating housing 11 toward the inside of the contact insertion passage 11e. After that, the contacts 12 and 13 are attached so as to be in a state of elastic contact with each other (see FIG. 11). The contact state between the contacts 12 and 13 at this time is released by the fitting of the inspection plug connector 20 and switched to the separated state as will be described later.

  Both the first contact 12 and the second contact 13 described above have flexible elastic arm portions 12a and 13a. At this time, one elastic arm portion 12a extends from the front end edge of the support substrate 12b held in a fixed state as will be described later so as to be cantilevered forward. As will be described later, the arm portion 13a extends in a cantilever manner so as to wrap around from the rear edge portion of the support substrate 13b held in a fixed state. The structure of these elastic arm portions 12a and 13a will be described in detail later.

  As shown in FIGS. 5 to 8, the support substrates 12 b and 13 b are formed from plate-like members extending substantially horizontally, and both side edges of the support substrates 12 b and 13 b, i.e., facing the contacts. From both ends in the plate width direction orthogonal to the direction, fixing pieces 12c and 13c as fixing portions for the insulating housing 11 extend substantially horizontally toward both sides outward. These fixed pieces 12c and 13c are configured to be press-fitted into a fixed groove portion that is recessed so as to form a groove on the inner wall surface of the insulating housing 11, and the fixed pieces 12c and 13c with respect to the insulating housing 11 are inserted. The entire first contact 12 and second contact 13 are held by the engaging force.

  In addition, at the connection boundary portion between the two members where the both fixed pieces 12c and 13c and the support substrates 12b and 13b are integrally connected, the notches 12d and 13d extending along the contact facing direction. Are formed respectively. The notches 12d and 13d are formed so as to be cut into a groove shape by a predetermined length from the base portions of the elastic arm portions 12a and 13a to the support substrates 12b and 13b. By providing 12d and 13d, the connecting boundary portion between the fixing pieces 12c and 13c and the support substrates 12b and 13b is formed in a narrow width, so that the narrowed portion, that is, the notch 12d. , 13d, the span length of the elastic arm portions 12a, 13a, which will be described later, is substantially expanded over the length of the length.

  That is, in this embodiment, the elastic arm portion 12a of the first contact 12 is cantilevered forward from the front edge of the support substrate 12b toward the second contact 13 on the other side. The elastic arm portion 12a is provided at the base portion of the elastic arm portion 12a, that is, the front portion of the support substrate 12b and the both sides of the elastic arm portion 12a in the plate width direction. Further, the substantial span length of the elastic arm portion 12a is extended over the groove length of the notches 12d and 12d.

  On the other hand, the elastic arm portion 13a of the second contact 13 is a rear end edge portion of the support substrate 13b and a pair of lower portions from the outer portions on both sides sandwiching a substrate connection portion 13e described later. It is configured to extend around the side. More specifically, the pair of elastic arm portions 13a and 13a are bent at a substantially right angle toward the lower side from the rear side edge of the support substrate 13b and then extended at a substantially right angle toward the front side again. It is bent and is configured to extend in a cantilevered manner toward the front side toward the counterpart first contact 12. And the groove | channel with which the notch parts 13d and 13d provided in the base part of the said elastic arm part 13a, ie, the back side part of the support substrate 13b mentioned above, and provided in the both sides of the plate | board width direction of the said elastic arm part 13a are equipped. The substantial span length of the elastic arm portion 13a is increased over the length.

  Further, substrate connecting portions 12e and 13e extending downward are integrally connected to the rear end edge portions of the support substrates 12b and 13b and in the substantially central portion in the plate width direction. These board connecting portions 12e and 13e are formed so that the rear end edge portions of the support substrates 12b and 13b are bent at a substantially right angle, and from the lower end portion of the bent portion at a substantially right angle downward, in the connector facing direction. It extends substantially horizontally toward a certain front side. Then, the electrical connectors are mounted by soldering the lower surfaces of these board connection portions 12e and 13e to the signal transmission conductive paths provided on the printed wiring board described above. .

  Here, as described above, the elastic arm portions 12a and 13a constituting the first and second contacts 12 and 13 are formed of cantilevered belt-like spring members protruding in directions close to each other, Among them, the elastic arm portion 12a of the first contact 12 is configured to extend forward from the front edge portion of the support substrate 12b toward the second contact 13 on the counterpart side. On the other hand, the elastic arm portion 13a of the second contact 13 is opposed to the other side via a folded portion 13a1 formed to be bent in a substantially U shape downward from the rear edge portion of the support substrate 13b. The first contact 12 is extended to the side.

  Specifically, first, the pair of elastic arm portions 13a and 13a constituting the second contact 13 are respectively arranged on the front side in the contact-facing direction from the lower end portions of the folded portions 13a1 and 13a1. Is bent at a substantially right angle and extends substantially horizontally in the lower region of the support substrate 13b, and then extends obliquely upward with a predetermined inclination angle with respect to the contact facing direction. An end edge portion of the elastic arm portion 13a on the extending side is a swing end in the vertical direction. That is, the pair of elastic arm portions 13a and 13a has elastic flexibility with a fulcrum at or near the connection portion with the support substrate 13b that is the base portion thereof, and the upper and lower sides are centered on the fulcrum. It is configured to swing in the direction.

  At this time, the rocking side tip portions of the pair of elastic arm portions 13a and 13a described above are integrally connected in the plate width direction, and the elastic arm portions 13a and 13a that are integrally connected to each other. A protruding contact portion 13f that protrudes so as to be able to come into contact with the first contact 12 side is provided at the swing end portion. The protruding contact portion 13f provided on the second contact 13 is formed so as to protrude obliquely downward toward a swinging tip portion of the first contact 12 described later, and the pair of elastic arm portions described above. 13a and 13a are provided so as to extend along the connecting direction.

  On the other hand, the elastic arm portion 12a of the first contact 12 is provided with a crank portion 12a1 bent so as to form a step shape obliquely downward immediately after extending from the support substrate 12b toward the front side. The main beam portion 12a2 extends through the crank portion 12a1 toward the front side, which is the connector facing direction. The entire elastic arm portion 12a has elastic flexibility with the connection boundary portion with the support substrate 12b or the vicinity thereof as a fulcrum and swings in the vertical direction around the fulcrum. It is made the composition which becomes.

  The crank portion 12a1 provided on the elastic arm portion 12a is obliquely downward from a position near the base portion of the elastic arm portion 12a, that is, on the lower side, which is the insertion direction of the inspection plug connector (mating connector) 20 described above. In order to bend in an inclined direction, the lower end portion that is the extending end on the obliquely lower side is again extended to the upper side that is opposite to the insertion direction of the test plug connector 20. After being bent, the main beam portion 12a2 connected to the crank portion 12a1 extends obliquely upward. Since the crank portion 12a1 that forms such a lowering step is provided at the base portion of the elastic arm portion 12a, the elasticity of the elastic arm portion 12a is enhanced, and the test plug connector 20 that is the mating connector is pushed. The elasticity of the entire first contact 12a with respect to pressure is improved.

  Further, the main beam portion 12a2 extends obliquely upward from the lower end portion of the crank portion 12a1 provided in the first contact 12. The main beam portion 12a2 extends substantially linearly toward the front side, which is the contact-facing direction, and the main beam portion 12a2 is formed on the extension-side tip portion of the main beam portion 12a2 formed to have a narrow width. A contact portion capable of contacting the second contact 13 on the side is provided. The front end portion of the first contact 12a having the contact portion extends inclining downward with respect to the contact facing direction (horizontal direction), and the contact portion provided on the first contact 12a is described above. The arrangement is such that the protruding contact portion 13f of the second contact 12a can be contacted from below.

  As described above, the tip portions of the contacts 12 and 13 provided with the contact portions are inclined and extend in a direction substantially parallel to each other, and the first contact 12 is in the contact facing direction. The second contact 13 extends obliquely upward, and both contact portions provided on both the contacts 12 and 13 are elastic to each other. The elastic contact is made by the elastic biasing force of the arm portions 12a and 13a.

  As described above, in this embodiment, the tip portions on the swing side of the first and second pair of contacts 12 and 13 having the contact portions extend so as to be substantially parallel to each other. When the contact portions provided on both the first and second contacts 12 and 13 come into contact with each other when the plug connector 20 is inserted and removed, the sliding distance between the contact portions is kept long. Become. The contact / separation of the first and second contacts 12 and 13 will be described later. Specifically, as shown in FIG. 12, the probe 20a of the inspection plug connector 20 is raised and the tip of the first contact 12 is moved. The contact portion slides from the state in which the contact portion provided on the contact portion and the protruding contact portion 13f of the second contact 13 start to contact to the state in which the elastic displacements of both the contacts 12 and 13 are balanced as shown in FIG. To do. Therefore, the so-called wiping action that keeps the conductivity by scraping action when the two contact parts rub against each other is ensured well, the cleanliness of the contact part is improved, and the electrical contact state is good. Maintained.

  In addition, since the tip portions of both contacts 12, 13 having contact portions extend in a direction inclined with respect to the contact facing direction, dust such as dust generated or attached to the contact portions or the vicinity thereof is inclined. It becomes easy to move along the surface, and the staying state of dust that impairs the connectivity of the contact portion is reduced.

  In particular, in the present embodiment, the protruding contact portion 13f provided on the second contact 13 which is one of the contact portions provided on the both contacts 12 and 13 faces the contact portion on the other first contact 12 side. Therefore, the scraping action when the two contact portions rub against each other is strengthened, and the above-described wiping action is further enhanced.

  Here, the main beam portion 12a2 constituting the elastic arm portion 12a of the first contact 12 extends so as to pass the position directly below the probe insertion hole 11c described above, and the lower end opening of the probe insertion hole 11c. The portion is arranged so as to face the middle portion of the main beam portion 12a2 from above. Then, as shown in FIGS. 9 to 11 in particular, when the inspection plug connector 20 is fitted from above, the probe 20a of the inspection plug connector 20 passes through the probe insertion hole 11c into the connector. When inserted, the lower end portion of the probe 20a protruding downward from the probe insertion hole 11c comes into contact with the middle portion of the main beam portion 12a3 constituting the elastic arm portion 12a of the first contact 12 from above. Further, when the test plug connector 20 is pushed down from the contact state, the elastic arm portion 12a of the first contact 12 is elastically displaced downward by the pressing force of the probe 20a, and the contact portion on the first contact 12 side. However, it is spaced downward from the contact portion on the second contact 13 side. When the inspection plug connector 20 is pushed down further and the probe 20a reaches the lowest point, as shown in FIG. 9, the elastic arm portion 12a of the first contact 12 is a contact provided on the base frame portion 11a. It contacts the bottom wall surface of the insertion passage 11e. Thereby, excessive displacement of the elastic arm portion 12a of the first contact 12 is prevented, and plastic deformation of the elastic arm portion 12a of the first contact 12 can be suppressed.

  At this time, the probe 20a of the inspection plug connector 20 is located at a midway position of the main beam portion 12a2 constituting the elastic arm portion 12a of the first contact 12, that is, at a position where the probe 20a of the inspection plug connector 20 abuts. Is formed so as to form a slit shape. The through hole 12a3 is formed from an elongated hole extending along the longitudinal direction of the main beam portion 12a2, and is provided so as to extend in both the front and rear directions from the position directly below the probe insertion hole 11c. It has been.

  If the through hole 12a3 is provided in the main beam portion 12a2 constituting the elastic arm portion 12a of the first contact 12 in this way, the probe insertion that is in an open state when the test plug connector 20 is not fitted is inserted. Dust such as dust entering the inside through the hole (partner insertion hole) 11c is guided downward, particularly along the inclined surface of the main beam portion 12a2, and is discharged through the through hole 12a3. As a result, dust does not accumulate on the first contact 12 or the second contact 13, and the possibility that the electrical continuity between the first contact 12 and the second contact 13 is hindered by dust is reduced.

  In addition, a chamfered portion made of an inclined surface that comes into contact with the probe 20a of the inspection plug connector 20 is provided at the opening edge portion of the through hole 12a3 described above, and the opening edge portion of the through hole 12a3 corresponds to the inspection plug. The curved surface formed on the distal end side portion of the probe 20a of the connector 20 is in planar contact with the probe 20a from multiple sides of the through hole 12a3 in the diagonal direction. .

  If the chamfered portion having such an inclined surface is provided, the electrical connection between the probe 20a of the inspection connector 20 and the first contact 12 can be made well, and the dust discharged through the through hole 12a3. Is smoothly guided by the inclined surface of the through hole 12a3. Further, the stress when the probe 20a of the inspection connector 20 contacts the elastic arm portion 12a of the first contact 12 is dispersed without being concentrated on a part of the fixed piece 12c of the first contact 12, and the first Use durability of one contact 12 is improved.

[Conductive shell]
On the other hand, as shown in FIGS. 1 to 4, a conductive shell 14 made of a thin plate-like conductive member is attached to the upper surface of the insulating housing 11 so as to cover from above. ing. The conductive shell 14 is mounted so as to cover a part of the outer peripheral surface of the insertion guide portion 11 b from the upper surface side of the insulating housing 11. The conductive shell 14 covers the upper surface side surface of the insulating housing 11. The upper substrate 14a is formed so as to have a substantially rectangular planar shape.

  A ground terminal portion 14b that covers the insertion guide portion 11b of the insulating housing 11 from the outside is formed in a substantially hollow cylindrical shape at the central portion of the substantially rectangular upper surface substrate 14a in the conductive shell 14. It is provided integrally. A fixed locking groove 14c having an annular shape is recessed in the outer peripheral surface of the ground terminal portion 14b. The fixed locking groove 14c is provided in the conductive shell of the inspection plug connector 20 described above. The thus-engaged projection 20b is fitted, so that the test plug connector 20 is connected to the switch-equipped coaxial connector 10 with an appropriate fitting force.

  In addition, substrate connection portions 14d extending so as to hang downward are respectively connected to the substantially rectangular four corners of the upper surface substrate 14a of the conductive shell 14 described above. Of the four substrate connection portions 14d, the two substrate connection portions 14d and 14d adjacent to each other in the opposing direction of the first contact 12 and the second contact 13 are integrally connected to each other. The board connection portions 14d and 14d on one side and the board connection portions 14d and 14d on the other side that are integrally connected are arranged so as to sandwich the contact pair composed of the first contact 12 and the second contact 13 from both sides. Yes. Then, the solder joint pieces 14f forming the tip portions of the respective board connection portions 14d are solder-joined to the ground conductive paths on the printed wiring board (not shown), so that the ground connection is performed and the switch The entire coaxial connector 10 is held.

  At this time, each of the board connecting portions 14d extends so as to form a curved shape downward from the edge of the upper surface board 14a described above, and the connecting direction of the two board connecting portions 14d and 14d. The cross-sectional shape in the direction orthogonal to the curve is curved so as to form a substantially S shape or a substantially Z shape.

  The shape of the board connecting portion 14d provided on the conductive shell 14 will be described in detail. The board connecting portion 14d is recessed obliquely downward from the edge of the upper surface board 14a toward the inner side of the connector. In addition to having an inversely tapered inclined wall surface that extends, it also has a horizontal wall surface that protrudes substantially horizontally again toward the outside of the connector from the lower end of the inclined wall surface. And the recessed part 14e recessed toward the 2nd contact 13 mentioned above and the 1st contact 12 side is defined by the reverse taper-shaped inclined wall surface and horizontal wall surface which were provided in the board | substrate connection part 14d, The recess 14e is configured to be recessed in the board connecting portion 14d. Further, the above-described horizontal wall surface of the board connecting portion 14d is configured to form a solder joint piece 14f to be soldered on the printed wiring board.

  If the concave portion 14e is provided in the board connecting portion 14d as described above, the surplus solder flux and flux used for the board connecting portion 14d of the conductive shell 14 are transferred to the board connecting portion 14d and the conductive portion. Even when trying to scoop up along the other wall surface of the conductive shell 14, the surplus solder material and flux that scoops up are stored inside the recess 14 e. In addition, the reverse-tapered inclined wall surface constituting the wall surface of the recess 14e reduces the creeping force of the solder material and flux. Furthermore, since the wall surface of the concave portion 14e extends in a curved shape, the length of the solder material and the flux rising up is extended, so that the so-called solder rise is prevented well, and the electrical conduction state The impact on is greatly reduced.

  In addition, since the board connection portion 14d of the conductive shell 14 according to the present embodiment has the solder joint piece 14f extending from the recess 14e toward the outside of the connector as described above, the board connection portion. The joining state of the solder material with respect to the solder joint piece 14f of 14d is immediately observed by the operator, so that the working efficiency is improved.

  At this time, the front end portion of the solder joint piece 14f according to the present embodiment is the same as the dimension in the width direction of the upper surface substrate 14a which is the maximum outer shape of the conductive shell 14 described above, or is located slightly on the inner side of the connector. With such a configuration, the entire size can be reduced without hindering the soldering operation for the solder joint piece 14f.

  As mentioned above, although the invention made by the present inventor has been specifically described based on the embodiment, the present embodiment is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  For example, in the above-described embodiment, the crank portion is provided only on the first contact, but it may be provided on the other or both contacts.

  In the above-described embodiment, the through hole is provided in the first contact. However, the through hole may be provided in the second contact according to the overall arrangement relationship.

  Furthermore, the present invention can be similarly applied to a coaxial connector with a switch used for applications other than the circuit inspection switch as in the above-described embodiment.

  As described above, the present invention can be widely applied to a wide variety of coaxial connectors with switches used in various electronic and electrical devices.

10 Coaxial connector with switch 11 Insulating housing 11a Base frame part 11b Insertion guide part 11c Probe insertion hole (mating connector insertion hole)
11d Inclined guide surface 11e Contact insertion path 12 First contact (one contact)
12a Elastic arm portion 12a1 Crank portion 12a2 Main beam portion 12a3 Through hole 12b Support substrate 12c Fixed piece 12d Notch portion 12e Substrate connection portion 13 Second contact (the other contact)
13a Elastic arm portion 13a1 Folded portion 13b Support substrate 13c Fixed piece 13d Notch portion 13e Substrate connection portion 13f Protruding contact portion 14 Conductive shell 14a Top surface substrate 14b Ground terminal portion 14c Fixed locking groove 14d Substrate connection portion 14e Recessed portion 14f Solder Joint piece 20 Plug connector for inspection (mating connector)
20a probe 20b engagement protrusion

Claims (5)

Provided with a pair of contacts arranged so as to be cantilevered from a fixed portion with the insulating housing and facing each other, and arranged so that the contact portions provided at the tip portions of the pair of contacts are in contact with each other And
A switch configured such that one of the pair of contacts moves in the pressing direction and is separated from the other contact by the pressing force of the mating connector inserted through the insertion hole provided in the insulating housing. With coaxial connector
Both of the pair of contacts include a flexible elastic arm portion that cantilevered from the fixed portion,
The elastic arm portion in at least one of the pair of contacts has a crank portion bent toward the insertion direction of the mating connector, and
A coaxial connector with a switch, wherein tip portions of the pair of contacts having the contact portions extend so as to be substantially parallel to each other.   2. The coaxial connector with a switch according to claim 1, wherein tip portions of the pair of contacts having the contact portion extend in a direction inclined with respect to a direction in which the pair of contacts face each other.   The coaxial connector with a switch according to claim 1, wherein one of the contact portions provided on the pair of contacts is formed so as to protrude toward the other. In the elastic arm portion of the one contact, a through hole is formed at a site where the mating connector contacts,
2. A switch according to claim 1, wherein a chamfered portion having an inclined surface is provided on an inner peripheral edge portion of the through hole forming an opening portion on the side facing the mating connector. Coaxial connector.   The coaxial connector with a switch according to claim 4, wherein the through hole is formed to have a long hole shape extending along a longitudinal direction of the elastic arm portion.

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