HK1064512A - Coaxial connector contact and coaxial connector having it - Google Patents

Description

Contact for coaxial connector and coaxial connector with contact

Technical Field

The present invention relates to a contact for a coaxial connector suitable for electronic devices such as information terminal devices and computer-related devices, and a coaxial connector provided with the contact.

Background

A coaxial cable used for electronic equipment such as information terminal equipment and computer-related equipment is constituted so as to include a sheath, a shield conductor, an insulator and a center conductor from an outer peripheral side to a center portion, and the shield conductor at a ground potential is located around the center conductor for transmitting and receiving a data signal. Therefore, the end of the coaxial cable is generally made into a coupler so that the center conductor and the shield conductor can be easily connected on the signal side and the ground side of the electronic board.

When the end of the coaxial cable is used as a connector, the center conductor, the insulator and the shield conductor are exposed and cut. The center conductor of the coaxial cable is soldered while being brought into contact with the flat wire connecting portion of the coaxial connector contact. At this time, if the center conductor is displaced from the predetermined position of the opening portion, solder flows out from the wire connecting portion, which causes a deterioration in quality. Therefore, various measures have been taken for a coaxial cable contact in the past to make the center conductor accurately contact a predetermined position of the wire connecting portion.

For example, japanese patent application laid-open No. 2001-43939 discloses that wall portions are formed on a front end portion and a rear end portion of a wire connecting portion in an axial direction of a center conductor, and an insertion groove through which the center conductor passes is formed on the wall portion of the rear end portion. With this configuration, after the center conductor of the coaxial cable is inserted into the insertion groove of the wall portion, the end face of the insulator is brought into contact with the wall portion, whereby the center conductor can be positioned. Further, since the wall portions at both ends have a function of blocking the solder from flowing out when soldering is performed, the solder can be further prevented from flowing.

Disclosure of Invention

However, as described above, the conventional configuration has a problem that the front end side of the center conductor is likely to be greatly displaced from the predetermined position because the center conductor is supported at one point on the root side in the front-rear direction and the left-right direction by the wall portion on the rear end side. As a result, in order to position the entire center conductor at a predetermined position, it is necessary to carefully perform the work of bringing the center conductor into contact with the wire connecting portion, which results in a reduction in productivity, or a dedicated device for high-precision positioning is necessary, which leads to an increase in production cost, and particularly, these problems are prominent when the coaxial connector is to be downsized in order to accommodate the downsizing and thinning of electronic equipment.

Accordingly, an object of the present invention is to provide a contact for a coaxial connector and a coaxial connector having the contact, which can accurately bring a center conductor into contact with a predetermined position of a wire connecting portion, and which can perform positioning work of the center conductor to the predetermined position very easily without requiring a special external device.

The contact for coaxial connector of the present invention is characterized in that it comprises a wiring part which is contacted with the central conductor of the coaxial cable and is connected by soldering tin; and a positioning portion which is provided to support the central conductor at a plurality of positions in the axial direction of the central conductor so as to position the central conductor at a predetermined position of the wire connecting portion.

According to the above configuration, when the center conductor of the coaxial cable contacts the connection portion, the positioning portion can support the center conductor at a plurality of positions of the center conductor, so that the center conductor can be positioned at a predetermined position of the connection portion. As a result, it is possible to make the position of the center conductor uniform for each product and reduce the quality deviation of the product. Further, when the center conductor is soldered, the quality deterioration due to the solder flowing out from the wire connecting portion can be prevented. Further, since the positioning portion can position the center conductor at the predetermined position when the center conductor is brought into contact with the wire connecting portion, the positioning operation of the center conductor to the predetermined position is very easy to perform, and no special external device is required.

In the coaxial connector contact according to the present invention, the positioning portion provided at least on the front end side of the center conductor is a support piece which can support the side surface of the center conductor from both sides.

According to the above configuration, the position in the left-right direction can be regulated between the support pieces with respect to the distal end portion of the center conductor that is most likely to be displaced from the predetermined position of the wire connecting portion, and therefore, the positioning of the positioning portion in the left-right direction can be performed with higher accuracy.

In the coaxial connector contact according to the present invention, the support piece is formed by punching a part of the positioning portion to protrude toward both sides of the center conductor.

According to the above configuration, since the support pieces can be present in a large area in the axial direction of the central conductor, even if the length of the central conductor has a slight error, the central conductor can be positioned with certainty by being positioned between the support pieces.

In the coaxial connector contact according to the present invention, the support piece is formed by punching a protrusion from a part of the positioning portion in the axial direction of the center conductor.

According to the above configuration, since the support piece is present in a large area at the end of the positioning portion, it is difficult for the solder to leak from the positioning portion when soldering the center conductor.

In the contact for a coaxial connector according to the present invention, the distance between the two support pieces decreases from the lower portion to the upper portion.

According to the above configuration, the center conductor of the positioning portion can be positioned with high accuracy in the horizontal direction and the vertical direction.

In the contact for a coaxial connector according to the present invention, the distance between the two support pieces is increased from the lower portion to the upper portion.

According to the above configuration, when the center conductor is provided from above, even if the tip side of the center conductor is located at a position deviated from the predetermined position of the wire connecting portion, the two support pieces can guide the tip side of the center conductor to the predetermined position, so that the setting work of the center conductor at the wire connecting portion is more easily performed.

In the coaxial connector contact according to the present invention, the support piece is formed by punching a protrusion from a part of the positioning portion in the axial direction of the center conductor, and has an insertion hole through which the center conductor is inserted.

According to the above configuration, since the support piece is present in a large area at the end of the positioning portion, it is difficult for the solder to leak from the positioning portion when soldering the center conductor. Further, the center conductor of the positioning portion can be positioned with high accuracy in the left-right direction and the up-down direction.

In the coaxial connector contact according to the present invention, the support piece is formed by punching a protrusion from a part of the positioning portion in the axial direction of the center conductor, and has a recess for accommodating the center conductor at an upper portion thereof.

According to the above configuration, since the support piece is present in a large area at the end of the positioning portion, it is difficult for the solder to leak from the positioning portion when soldering the center conductor. Further, since the center conductor can be set in the recess from above the positioning portion, the installation work of the center conductor in the positioning portion can be easily performed.

Further, a contact for a coaxial connector according to the present invention is characterized by comprising: a connection portion which is in contact with a central conductor of the coaxial cable at a predetermined position and is connected by soldering; a first positioning portion provided at a distal end portion of the central conductor and capable of supporting side surfaces of the central conductor from both sides; and a second positioning portion provided on the root side of the central conductor, formed to support the side surface of the central conductor from both sides, and formed to contact the end surface of the dielectric covering the central conductor.

According to the above configuration, when the center conductor of the coaxial cable is brought into contact with the wire connecting portion, the position of the tip portion and the root portion of the center conductor in the left-right direction is regulated by the first positioning portion and the second positioning portion, whereby the entire center conductor can be accurately positioned at a predetermined position of the wire connecting portion. Further, the second positioning portion is in contact with the end face of the dielectric, whereby the center conductor can be accurately positioned in the front-rear direction in the axial direction. As a result, variations in the position of the center conductor can be reduced for each product, and variations in the quality can be reduced. In addition, when the center conductor is soldered, it is possible to prevent the quality from being deteriorated due to the solder flowing out from the wire connecting portion, and it is very easy to perform the positioning operation of the center conductor to a predetermined position, and no special external device is required.

In the coaxial connector contact according to the present invention, the second positioning portion is provided with a guide groove that is formed with a groove width that increases from a lower portion to an upper portion, and guides the center conductor to a predetermined position.

According to the above configuration, when the center conductor is provided from above, even if the root portion side of the center conductor is located at a position deviated from the predetermined position of the wire connecting portion, the guide groove can guide the root portion side of the center conductor to the predetermined position, so that the work of providing the center conductor to the wire connecting portion is more easily performed.

Further, the coaxial connector of the present invention is characterized by comprising a contact for a coaxial connector having any one or more of the above-described features.

According to the above configuration, the coaxial coupling can be obtained with high yield.

Drawings

Fig. 1 is an explanatory view showing a state in which a contact for a coaxial connector is housed in a housing.

Fig. 2 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 3 is an explanatory view showing a state in which the coaxial cable is connected to the coaxial connector contact, (a) is a state before soldering, and (b) is a state after soldering.

Fig. 4 is a view showing an assembled state of the coaxial coupling.

Fig. 5 is a cross-sectional view of the coaxial coupling.

Fig. 6 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 7 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 8 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 9 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 10 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 11 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Fig. 12 shows a structure of a coaxial connector contact, where (a) is a front view, (b) is a side view, and (c) is a plan view.

Detailed Description

A coaxial connector contact and a coaxial connector provided with the same according to an embodiment of the present invention will be described below with reference to fig. 1 to 12.

As shown in fig. 1, a contact 1 for a coaxial connector according to an embodiment of the present invention is formed by processing a plate-shaped metal material. Examples of the plate-like metal material include metals such as iron, aluminum, and copper, and alloys containing these metals as main components. The coaxial connector contact 1 has a terminal portion 2 which is in contact with a center conductor 21 of a coaxial cable 20 and is soldered. The coaxial cable 20 has a structure in which a sheath 22, a shield conductor 23, an insulator 24, and a center conductor 21 are provided in this order from the outer peripheral side to the center, and the shield conductor 23 of the ground potential is positioned around the center conductor 21 for receiving and transmitting a data signal.

The wire connecting portion 2 is formed flat so that solder hardly flows. A pair of left and right elastic contact portions 9 and 9 are provided at both ends of the wire connecting portion 2 in the left and right direction. The contact portions 9 and 9 are suspended from the terminal portion 2 and fitted into a mating connector, not shown. On the other hand, the first positioning portion 3 and the second positioning portion 4 are provided at the front end portion and the rear end portion of the wire connecting portion 2, respectively. The first and second positioning portions 3 and 4 can support the central conductor 21 at a plurality of positions in the axial direction of the central conductor 21 so as to position the central conductor 21 at a predetermined position of the wire connecting portion 2.

Here, the tip of the wire connecting portion 2 refers to an end of the wire connecting portion 2 located on the tip side of the central conductor 21 when the axial direction of the central conductor 21 contacting the wire connecting portion 2 is the front-rear direction. On the other hand, the rear end of the wire connection portion 2 is an end of the wire connection portion 2 located on the rear end side (root side) of the center conductor 21. The left-right direction is a direction perpendicular to the axial direction of the central conductor 21 and parallel to the upper surface of the wire connecting portion 2. The vertical direction is a direction perpendicular to the axial direction of the center conductor 21 and parallel to the upper surface of the wire connecting portion 2.

The first positioning portion 3 provided at the distal end of the wire connecting portion 2 includes a mounting portion 6 on which the distal end of the center conductor 21 is mounted, as shown in fig. 2(a) to (c); and a pair of support pieces 5 and 5 arranged on the left and right with the loading part 6 as the center. The mounting portion 6 protrudes forward from the center of the wire connecting portion 2. The support pieces 5 and 5 are formed by punching out projections from a part of the first positioning portion 3 in the left-right direction, and face each other on both sides of the central conductor 21.

The distance between the two support pieces 5 and 5 is set to be equal to or slightly wider than the diameter of the central conductor 21 so as to support the side surfaces of the central conductor 21 from both sides. In addition, when the center position of the two support pieces 5 and 5 is set to a predetermined position, the above-mentioned interval is preferably set to a degree that does not interfere with soldering even if it deviates from the predetermined position. Thus, the first positioning portion 3 can position the distal end portion of the center conductor 21, which is most likely to be displaced from the predetermined position of the wire connecting portion 2, in the left-right direction by the support pieces 5 and 5. Further, since the first positioning portions 3 can make the supporting pieces 5 and 5 exist in a large area in the front-rear direction, even if the length of the exposed central conductor 21 is slightly different, the tip end portion of the central conductor 21 can be reliably positioned between the supporting pieces 5 and 5.

Further, the two support pieces 5 and 5 are bent inward from the lower portion to the upper portion as a whole. Thus, the first positioning portions 3 are reduced from the lower portion to the upper portion by the interval between the two support pieces 5 and 5, and the center conductor 21 in the first positioning portions 3 can be positioned with high accuracy in the horizontal direction and the vertical direction. The two support pieces 5 and 5 may be inclined inward over the entire area from the lower portion to the upper portion, or may be erected from the lower portion to the upper portion and bent or bent inward only at the upper portion.

On the other hand, a second positioning portion 4 is provided at the rear end portion of the wire connecting portion 2. The second positioning portion 4 includes: a positioning piece 7 formed by punching a part of the second positioning portion 4 in the axial direction of the center conductor to form a protrusion, and a guide groove 8 formed in the center of the positioning piece 7. The guide groove 8 is set to a width equal to or slightly wider than the diameter of the center conductor 21. When the width of the guide groove 8 is set to a predetermined position at the center position of the guide groove 8, it is preferable to set the width to a degree that does not interfere with soldering even if the width deviates from the predetermined position. Thus, the second positioning portion 4 can support the root portion side of the center conductor 21 in the left-right direction, and the positioning piece 7 can be brought into contact with the end face of the insulator 24, whereby the center conductor 21 can be accurately positioned in the front-rear direction.

As shown in fig. 1, the coaxial connector contact 1 configured as described above is housed in a housing 30. The housing 30 is formed by injection molding of an insulating material. Here, the insulating material is a synthetic resin material such as PBT series, nylon series, PPS series, LCP series, or the like, and any insulating material can be used. The housing 30 includes: a substantially cylindrical case body 31; a housing cover 32 covering the upper side of the contact; and a first engaging mechanism 33 for holding the case cover 32 and the case body 31 in a contact state. The housing cover 32 is fixed to one side of the upper edge of the housing body 31. The housing cover 32 is bent at the fixed end, so that the free end side can cover the upper side of the contact while contacting the other side of the upper edge of the housing body 31.

The housing body 31 includes an upper housing portion 40 and a lower housing portion 41 provided on the upper and lower sides, respectively. The housing body 31 is provided with a contact accommodating hole 37 in the center portion thereof for accommodating a coaxial connector contact. The contact accommodating holes 37 communicate from the upper surface to the lower surface of the housing body 31. The contact receiving hole 37 of the upper housing portion 40 is configured to receive the wire connecting portion 2, the first positioning portion 3, and the second positioning portion 4. On the other hand, the contact accommodating hole 37 of the lower housing portion 41 is configured to accommodate the contact portions 9 and 9.

The upper case 40 has a body-side engaging portion 34. The main body side engaging portion 34 is disposed on the other side of the upper edge portion of the housing main body 31. The body-side engaging portion 34 includes a fitting groove 34a set within a predetermined width, and protruding portions 34b, 34b set to protrude inward from the upper end portion of the side surface of the fitting groove 34 a. The fitting groove 34a is formed in a radial direction from the contact accommodating hole 37 to the outer peripheral surface.

The body side engaging portion 34 constitutes a part of the first engaging mechanism 33. The first engagement mechanism 33 includes the above-described body-side engagement portion 34 and the cover-side engagement portion 35. The cover-side engaging portion 35 is disposed on the free end side of the housing cover 32. The cover-side engaging portion 35 has a protruding piece 35a protruding from a substantially central portion of the free end side of the housing cover 32. The width of the projecting piece 35a is set equal to the interval between the projecting portions 34b and 34 b. Further, step portions 35b and 35b are formed on both side surfaces of the projecting piece 35 a. The width of the protruding piece 35a plus the stepped portions 35b and 35b is set to a width slightly smaller than the groove width of the fitting groove 34 a. The step portions 35b and 35b contact the protruding portions 34b and 34b at the top surfaces when the protruding piece 35a is fitted in the fitting groove 34 a. The contact between the stepped portions 35b and the protruding portions 34b and 34b generates a holding force to maintain the contact state between the housing cover 32 and the housing body 31.

As shown in fig. 4, a cable housing portion 42 for housing the shield conductor 23 of the coaxial cable 20 is formed in the upper housing portion 40 of the housing body 31. The cable housing portion 42 is formed in a direction perpendicular to the longitudinal direction of the housing cover 32 in contact with the housing body 31, and faces the center portion of the housing body 31. Further, a lid portion 32a is formed on the case lid 32. The cover portion 32a is disposed to cover an upper portion of the shield conductor 23 of the coaxial cable 20 accommodated in the cable accommodating portion 42. The lid portion 32a covers the upper side of the shield conductor 23, and thus can prevent the shield conductor 23 from floating when an upward pressing force is applied to the coaxial cable 20.

The case 30 configured as described above is accommodated in the housing 51. The housing 51 is formed by machining a metal plate. Examples of the metal plate include metals such as iron, aluminum, and copper, and alloys containing these metals as main components. The housing 51 includes a housing body 52 for accommodating the housing 30, and a housing cover member 53 integrally provided on the housing body 52. The housing body 52 includes a housing main receiving portion 54 and a housing sub-receiving portion 55. The housing main housing portion 54 is formed in a cylindrical shape with an open upper surface and a lower surface so as to house the upper housing portion 40 and the lower housing portion 41 of the housing body 31. The housing sub-housing portion 55 is formed in a box shape with an open top surface so as to house the cable housing portion 42 of the housing body 31.

On the other hand, the housing cover member 53 is provided at the upper edge of the housing main housing portion 54. The housing cover member 53 is disposed to face the housing sub-housing portion 55 and is bendable at the connecting portion 53 a. The housing cover member 53 includes: a first cover 53b covering the upper surface of the housing main housing portion 54; a second cover 53c covering the upper surface of the housing sub-housing 55; a conductor press-fitting portion 53d press-fitted to the shield conductor 23 of the coaxial cable 20; and a sheath press-fitting portion 53e press-fitted to the sheath 22 of the coaxial cable 20. The case cover member 53 before bending is in a vertical standing state with respect to the case main housing portion 54, and the case 30 can be housed by opening the upper surface of the case main housing portion 54. When the housing cover member 53 is tilted toward the housing body 52 by the bending of the connecting portion 53a, the upper surfaces of the upper housing portion 40 and the cable housing portion 42 of the housing body 31 housed in the housing body 52 are covered with the first cover portion 53b and the second cover portion 53c, respectively, and the conductor press-fitting portion 53d can be press-fitted to the shield conductor 23 of the coaxial cable 20.

The housing lid member 53 is disposed such that the longitudinal direction of the housing lid member 53 is perpendicular to the longitudinal direction of the housing lid 32 when the housing body 52 is tilted down. The housing cover member 53 can be disposed at any position if it is set in a relationship in which the position does not overlap in a state of being vertically erected with respect to the housing cover 32.

In the above configuration, the coaxial connector contact 1 and the method of manufacturing the coaxial connector will be described.

(contact processing procedure)

First, as shown in fig. 1 and fig. 2(a) to 2(c), a strip-shaped thin metal plate is prepared, and the strip-shaped thin metal plate is conveyed to a press working apparatus. In the press working apparatus, one side in the width direction of the strip-shaped metal plate is left as a carrier, and the other side is continuously formed by cutting and deforming the contact 1 for the coaxial connector connected to the carrier not shown at an equal interval. Thereafter, the coaxial connector contact 1 is wound into a roll shape together with the carrier by a roll.

(soldering Process)

The above-described roller-shaped contact 1 for the coaxial coupling is set on a conveyor, and the contact 1 for the coaxial coupling located on the tip side is attached to a jig for performing welding work. The coaxial connector contact 1 is mounted so that the upper surface of the wire connecting portion 2 is set to be horizontal to prevent solder from flowing. Thereafter, as shown in fig. 3(a), the coaxial cable 20 is cut into a predetermined length. The front end of the coaxial cable 20 is subjected to a 2-layer stripping process by a peeler or the like to expose the center conductor 21, the insulator 24, and the shield conductor 23. The exposed length of the center conductor 21 is set to a value approximately equal to the interval between the first positioning portion 3 and the second positioning portion 4 of the coaxial connector contact 1 so that the tip end portion of the center conductor 21 is positioned within the first positioning portion 3. Further, a workpiece of the coaxial cable 20 may be prepared in advance, which is subjected to the 2-layer peeling process.

Next, the coaxial cable 20 subjected to the 2-layer peeling process is moved to above the coaxial connector contact 1 on the jig. The coaxial cable 20 is set on the coaxial connector contact 1, and the center conductor 21 is brought into contact with the wire connecting portion 2 of the coaxial connector contact 1. At this time, the end face of the insulator 24 of the coaxial cable 20 contacts the positioning piece 7 of the second positioning portion 4. Thereby, the center conductor 21 is positioned in the front-rear direction of the wire connecting portion 2. As a result, the base end portion, i.e., the rear end portion of the center conductor 21 is positioned in the guide groove 8 of the second positioning portion 4, and the tip end portion is positioned between the support pieces 5 and 5 of the first positioning portion 3. Even if the exposed length of the central conductor 21 is slightly different, the supporting pieces 5 and 5 are formed by punching out a part of the first positioning portion 3 toward both sides of the central conductor 21, so that the central conductor 21 can be reliably positioned between the supporting pieces 5 and 5.

As a result, 2 positions of the front end portion and the rear end portion of the center conductor 21 can be supported by the positioning portions 3 and 4, respectively, thereby positioning the center conductor 21 within an allowable range in the left-right direction with respect to the predetermined position. In particular, the distal end portion of the center conductor 21, which is likely to be displaced from the predetermined position of the wire connecting portion 2, is restricted between the support pieces 5 and 5 in the left-right direction, so that the distal end portion can be positioned in the left-right direction with high accuracy. Further, the support pieces 5 and 5 are bent inward so that the distance between the support pieces 5 and 5 decreases from the lower portion to the upper portion, and the tip end portion of the center conductor 21 is accommodated in the support pieces 5 and 5. Thus, even if the distal end portion of the center conductor 21 is lifted upward, the distal end portion of the center conductor 21 is positioned in the left-right direction and the up-down direction.

Thereafter, as shown in fig. 3(b), the central conductor 21 is connected to the wire connecting portion 2 by soldering while the central conductor 21 is kept in contact with the wire connecting portion 2. When soldering is performed, the liquid solder 60 flows from the center conductor 21 to the outside of the wire connecting portion 2. At this time, since the center conductor 21 is positioned on the center line of the wire connecting portion 2 in the left-right direction, the solder 60 flowing in the left-right direction of the wire connecting portion 2 can be sufficiently prevented from flowing out to the contact portions 9 and 9 positioned at both ends in the left-right direction. Further, since the support pieces 5 and the positioning piece 7 of the first positioning portion 3 function as walls for preventing the flow, the solder 60 flowing in the front-rear direction of the wire connecting portion 2 can be sufficiently prevented from leaking to the back side of the wire connecting portion 2. As a result, even if the exposed length of the central conductor 21 varies somewhat, or the tip portion or the entire central conductor 21 is bent, the central conductor 21 can be reliably soldered to the wire connecting portion 2, and the quality deterioration due to the solder 60 flowing out from the wire connecting portion 2 can be prevented.

Once the soldering operation is completed, the coaxial connector contact 1 is separated from the carrier, not shown. Then, the coaxial connector contact 1 is detached from the jig and carried to the next assembly step.

(Assembly Process)

In the assembly step, first, as shown in fig. 4, the housing 51 is set in an assembly device not shown. The housing 30 is disposed in the housing main housing portion 54 of the housing 51. At this time, the cable housing portion 42 of the housing body 31 is housed in the housing sub-housing portion 55 of the housing body 52, and the housing 30 is fixed to the housing body 52 in the horizontal plane.

Next, the coaxial connector contact 1 with the coaxial cable 20 manufactured in the soldering process is inserted into the contact accommodating hole 37 of the housing body 31. Then, the insulator 24 of the coaxial cable 20 is accommodated in the cable accommodating portion 42, and thereby the coaxial connector contact 1 is fixed to the housing main body 31 in a horizontal plane. Thereafter, the housing cover 32 is tilted toward the housing main body 31 by bending the fixed end of the housing cover 32. Thereby, the upper side of the coaxial connector contact 1 is covered with the housing cover 32 by closing the housing cover 32.

Further, the lid-side engaging portion 35 is fitted into the body-side engaging portion 34 by tilting the case lid 32. As a result, the step portions 35b and 35b of the cover-side engaging portion 35 contact the projection portions 34b and 34b of the body-side engaging portion 34, and the cover-side engaging portion 35 and the body-side engaging portion 34 are engaged with each other. This engaged state generates a holding force to hold the case lid 32 in a tilted state. Therefore, the coaxial connector contact 1 is prevented from floating by the housing cover 32 so as to be received in the contact receiving hole 37 in a desired receiving posture.

Next, the bending of the connecting portion 53a of the housing lid member 53 causes the housing lid member 53 to tilt toward the housing main body 52. The housing portions 40 and 41 of the housing body 31 that houses the coaxial connector contact 1 are covered with the first cover portion 53 b. The insulator 24 of the coaxial cable 20 accommodated in the cable accommodating portion 42 is covered with the second cover portion 53 c. Further, the shield conductor 23 and the sheath 22 are respectively brought into contact with and press-fitted to the conductor press-fitting portion 53d and the sheath press-fitting portion 53 e. As a result, as shown in fig. 5, the coaxial connector contact 1 to which the center conductor 21 of the coaxial cable 20 is soldered and the shell 51 to which the shield conductor 23 is connected are made into a coaxial connector 61 having a structure in which the housing body 31 is electrically insulated.

As described above, the coaxial connector contact 1 according to the present embodiment includes, as shown in fig. 1 and fig. 2(a) to (c): a wire connecting portion 2 for connecting the center conductor 21 of the coaxial cable 20 to a predetermined position by solder 60; a first positioning portion 3 provided on the front end portion side of the central conductor 21 and formed to support the side surface of the central conductor 21 from both sides; and a second positioning portion 4 provided on the rear end side (root side) of the central conductor 21, formed to support the side surface of the central conductor 21 from both sides, and formed to contact the end surface of the insulator 24 (dielectric) covering the central conductor 21.

According to the above configuration, when the central conductor 21 of the coaxial cable 20 is brought into contact with the wire connecting portion 2, the first positioning portion 3 and the second positioning portion 4 position the front end portion and the rear end portion (base portion) of the central conductor 21 in the left-right direction, whereby the entire central conductor 21 can be accurately positioned at a predetermined position of the wire connecting portion 2. Further, the center conductor 21 can be accurately positioned in the front-rear direction in the axial direction by the contact of the second positioning portion 4 with the end face of the insulator 24. As a result, variations in the position of the center conductor 21 can be reduced for each product, and variations in mass can be reduced. Further, when the center conductor 21 is soldered, it is possible to prevent the quality from being deteriorated due to the solder 60 flowing out from the wire connecting portion, and it is very easy to perform the positioning operation of the center conductor 21 to a predetermined position, and no special external device is required.

In the present embodiment, the first positioning portions 3 are formed as support pieces 5 and 5 capable of supporting the side surfaces of the central conductor 21 from both sides. This can regulate the position of the distal end portion of the center conductor 21, which is most likely to be displaced from the predetermined position of the wire connecting portion 2, in the left-right direction between the support pieces 5 and 5, and therefore, more accurate positioning can be performed in the left-right direction of the first positioning portion 3.

The supporting pieces 5 and 5 of the present embodiment are formed by punching out a protrusion from a part of the first positioning portion 3 in the axial direction of the center conductor 21. Since the support pieces 5 and 5 are present in a large area at the end of the first positioning portion 3, the solder 60 hardly leaks from the first positioning portion 3 when the center conductor 21 is soldered. Further, the interval between the two support pieces 5 and 5 decreases from the lower portion to the upper portion. This enables highly accurate positioning of the center conductor 21 of the first positioning portion 3 in the horizontal direction and the vertical direction.

The present invention has been described with reference to preferred embodiments, but the present invention can be modified within the scope not exceeding the gist thereof. That is, as shown in fig. 6(a) to (c), the coaxial connector contact 1 may have support pieces 5 and 5 formed in a vertical direction from a lower portion to an upper portion. As shown in fig. 7(a) to (c), the coaxial connector contact 1 may have support pieces 65 and 65 formed by punching out a protrusion from a part of the first positioning portion 3 in the axial direction of the center conductor 21. With this configuration, since the support pieces 65 and 65 are present in a large area at the end of the first positioning portion 3, the solder 60 hardly leaks from the first positioning portion 3 when the center conductor 21 is soldered.

Further, as shown in fig. 8(a) to (c), the interval between the two support pieces 65 and 65 may decrease from the lower portion to the upper portion. In this case, the center conductor 21 of the first positioning portion 3 can be positioned in the right-left direction and the up-down direction with high accuracy. On the other hand, as shown in fig. 9(a) to (c), the interval between the two support pieces 65 and 65 may be increased from the lower portion to the upper portion. At this time, when the center conductor 21 in the first drawing is installed from above, even if the tip of the center conductor 21 is located at a position deviated from the predetermined position of the wire connecting portion 2, since the two support pieces 65 and 65 guide the tip of the center conductor 21 to the predetermined position, the operation of installing the center conductor 21 to the wire connecting portion 2 is further facilitated.

As shown in fig. 10(a) to (c), the coaxial connector contact 1 may be formed by punching out a part of the first positioning portion 3 in the axial direction of the central conductor 21 and may include a support piece 66 having an insertion hole 66a through which the central conductor 21 is inserted. At this time, the support pieces 66 are present in a large area at the end of the first positioning portion 3, and when the center conductor 21 is soldered, the solder 60 hardly leaks from the first positioning portion 3. Further, the center conductor 21 of the first positioning portion 3 can be positioned in the right-left direction and the up-down direction with high accuracy.

Further, as shown in fig. 11(a) to (c), the coaxial connector contact 1 may be formed by punching out a part of the first positioning portion 3 in the axial direction of the center conductor 21 and may include a support piece 67 having a recess 67a on which the center conductor 21 is placed. At this time, the support pieces 67 are present in a large area at the end of the first positioning portion 3, and when the center conductor 21 is soldered, the solder 60 hardly leaks from the first positioning portion 3. Further, since the center conductor 21 can be set in the recess 67a from above the first positioning portion 3, the work of setting the center conductor 21 to the first positioning portion 3 is easy.

As shown in fig. 12(a) to (c), the positioning piece 7 of the second positioning portion 4 of the coaxial connector contact 1 may have a groove width that increases from the lower portion to the upper portion, and may have a guide groove 8 that guides the center conductor 21 to a predetermined position. At this time, when the center conductor 21 is provided from above, even if the root portion side of the center conductor 21 is located at a position deviated from the predetermined position of the center conductor 21, the guide groove 8 guides the root portion side of the center conductor 21 to the predetermined position, so that the work of providing the center conductor 21 to the wire connecting portion 2 is more easily performed.

In the present embodiment, for example, as shown in fig. 2(a) to (c), the first positioning portions 3 and the second positioning portions 4 are formed at the front end portion and the rear end portion in the front-rear direction of the wire connecting portion 2, but the present invention is not limited thereto. That is, the coaxial connector contact 1 may have a plurality of positioning portions provided at a plurality of positions in the axial direction of the central conductor 21 and capable of supporting the central conductor 21, in order to form the wire connecting portion 2 which is connected to the central conductor 21 of the coaxial cable 20 by the solder 60 and position the central conductor 21 at a predetermined position of the wire connecting portion 2. More specifically, if the positioning portion is provided at 2 or more positions, the number and arrangement positions of the positioning portions are not limited. Even with this configuration, when the central conductor 21 of the coaxial cable 20 is in contact with the wire connecting portion 2, the positioning portion can support the central conductor 21 at a plurality of positions of the central conductor 21, and therefore the central conductor 21 can be positioned at a predetermined position of the wire connecting portion 2.

In the present embodiment, as shown in the second and 6-2, only the first positioning portion 3 is provided with the support pieces 5, 65, 66, 67, 68, but the second positioning portion 4 may be provided with the same support pieces 5, 65, 66, 67, 68. Further, when the positioning portions 5, 65, 66, 67, 68 are provided at a plurality of positions of 2 or more, the second positioning portion 4 provided at least on the front end side of the center conductor 21 may have the supporting pieces 5, 65, 66, 67, 68.

Industrial applicability of the invention

The contact for a coaxial connector and the coaxial connector provided with the contact described above can be applied to electronic devices such as information terminal devices and computer-related devices.

Claims (12)

1. A contact for a coaxial connector, comprising:

a connection portion which is in contact with the central conductor of the coaxial cable and is connected with the coaxial cable by soldering tin; and

and a positioning portion which is disposed so as to support the central conductor at a plurality of positions in the axial direction of the central conductor, so that the central conductor is positioned at a predetermined position of the wire connecting portion.

2. The contact for a coaxial connector according to claim 1, wherein the positioning portion provided at least at the front end portion of the center conductor is a support piece formed to support the side surface of the center conductor from both sides.

3. The contact for a coaxial connector according to claim 2, wherein the supporting piece is formed by punching out a part of the positioning portion to protrude facing both sides of the center conductor.

4. The contact for a coaxial connector according to claim 2, wherein the supporting piece is formed by punching a part of the positioning portion in an axial direction of the center conductor to form a protrusion.

5. The contact for a coaxial connector according to claim 2, wherein the interval between the two support pieces decreases from the lower portion to the upper portion.

6. The contact for a coaxial connector according to claim 2, wherein the interval between the two support pieces is enlarged from the lower portion to the upper portion.

7. The contact for a coaxial connector according to claim 2, wherein the supporting piece is formed by punching a part of the positioning portion in an axial direction of the center conductor to form a protrusion, and has an insertion hole for inserting the center conductor therein.

8. The contact for a coaxial connector according to claim 2, wherein the supporting piece is formed by punching a part of the positioning portion in the axial direction of the center conductor to form a protrusion, and is provided at an upper portion thereof with a recess for accommodating the center conductor.

9. A contact for a coaxial connector, comprising:

a connection portion for connecting the central conductor of the coaxial cable with solder while contacting the central conductor to a predetermined position;

a first positioning portion provided on a front end portion side of the central conductor and formed to support a side surface of the central conductor from both sides; and

and a second positioning portion provided on the root side of the central conductor, capable of supporting the side surface of the central conductor from both sides, and formed in contact with the end surface of the dielectric covering the central conductor.

10. The contact for a coaxial connector according to claim 9, wherein the second positioning portion has a guide groove whose width is set to be enlarged from a lower portion to an upper portion and guides the center conductor to a prescribed position.

11. A coaxial connector characterized by having the contact for a coaxial connector according to claim 1.

12. A coaxial connector characterized by having the contact for a coaxial connector according to claim 9.