WO2006087953A1 - Coaxial connector and communication device - Google Patents
Coaxial connector and communication device Download PDFInfo
- Publication number
- WO2006087953A1 WO2006087953A1 PCT/JP2006/302151 JP2006302151W WO2006087953A1 WO 2006087953 A1 WO2006087953 A1 WO 2006087953A1 JP 2006302151 W JP2006302151 W JP 2006302151W WO 2006087953 A1 WO2006087953 A1 WO 2006087953A1
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- WO
- WIPO (PCT)
- Prior art keywords
- receptacle
- conductor
- coaxial connector
- force
- spring contact
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
Definitions
- the present invention relates to a coaxial connector provided with a coaxial cable, and more particularly to a coaxial connector and a communication device used as a component part of a portable communication device.
- the coaxial connector 60 includes a metal housing 61, a socket 62, a pushing 63, and a coaxial cable 66 !.
- the woozing 61 has a cylindrical portion 64 that contacts the outer conductor 82 of the receptacle 81, and is electrically connected to the outer conductor 67 of the coaxial cable 66.
- the socket 62 is substantially C-shaped, contacts the central conductor 83 of the receptacle 81 so as to wrap around, and is connected to the central conductor 68 of the coaxial cable 66.
- the socket 62 can shorten the cylindrical portion 64 of the housing 61 in the axial direction, and contributes to a reduction in the height of the coaxial connector 60.
- the pushing 63 has an accommodation hole 63 a for accommodating the socket 62, and is mounted in the cylindrical portion 64 of the housing 61.
- several vertical slits 65 are provided in a direction parallel to the insertion direction of the receptacle 81 at the lower part of the cylindrical portion 64 of the housing 61.
- the cylindrical portion 64 can be slightly opened in the radially outward direction, and a reaction force in the radially inward direction can be obtained.
- the above-described convex portion hits the outer conductor 82 when the cylindrical portion 64 is inserted into the outer conductor 82 of the receptacle 81.
- the cylindrical part 6 4 may be destroyed.
- the longitudinal slit 65 is lengthened, the spring stiffness in the radial direction of the tubular portion 64 becomes weaker, and the tubular portion 64 is destroyed. At the same time, however, the contact force decreases due to a decrease in rigidity, so the length of the vertical slit 65 must be selected according to the shape and material of the housing 61.
- the socket 62 has a spring contact shape in which a flat spring having a constant width is curved so as to have a C-shaped cross section in order to reduce size and height. Part 62a.
- the spring contact portion 62a is displaced outward in the radial direction, and an arbitrary portion of the inner peripheral surface of the spring contact portion 62a is pressed against the outer peripheral surface of the center conductor 83. That is, the C-shaped spring contact portion 62a wraps around the cylindrical central conductor 83 of the mating receptacle.
- this socket 62 has a problem that the contact force of the contact is not stable because the contact position between the spring contact portion 62a and the cylindrical center conductor 83 is not constant.
- Patent Document 1 Japanese Patent Laid-Open No. 11-307158
- an object of the present invention is to provide a coaxial connector and a communication device that can be coupled to a receptacle in a mechanically and electrically stable state and that are short.
- a coaxial connector according to the present invention includes:
- a coaxial cable having a center conductor and an outer conductor
- a housing having a cylindrical portion in contact with the outer conductor of the receptacle and electrically connected to the outer conductor of the coaxial cable;
- the center conductor of the receptacle is press-fitted and expands outward in the radial direction.
- a spring contact portion that is pressed against the peripheral surface, and a connection that is connected to the central conductor of the coaxial cable that is drawn out integrally with the spring contact portion force and is bent in a direction substantially perpendicular to the central axis direction of the spring contact portion
- a socket having a portion
- a housing having a housing hole for housing the socket, and a bushing mounted in a cylindrical portion of the housing;
- a lower end force of the cylindrical portion is provided at a lower portion of the cylindrical portion of the housing, and a vertical cut is provided in a direction substantially parallel to a press-fitting direction of the central conductor of the receptacle, and the central conductor of the receptacle is formed from the vertical cut.
- a transverse cut was made in a direction substantially perpendicular to the press-in direction of
- an insertion portion of the coaxial cable is provided at the upper portion of the tubular portion, a vertical cut is provided below the insertion portion, and the horizontal cut is based on the vertical cut. It is preferable that it is provided symmetrically!
- a vertical slit may be provided in the lower part of the cylindrical part in a direction substantially parallel to the press-fitting direction of the central conductor of the receptacle from the lower end of the cylindrical part.
- the spring contact portion of the socket has a substantially C-shaped cross section, and n contacts are arranged on the outer peripheral surface of the central conductor of the receptacle in the circumferential direction. It is preferable to have n—1 tunes, as you have. Since the n contacts between the spring contact portion of the socket and the center conductor of the receptacle can always be arranged at a fixed position, the contact force of the contact can be stabilized. As a result, the coaxial cable can be coupled to the receptacle in a mechanically and electrically stable state, and a low-profile coaxial connector can be obtained.
- the spring contact portion is a simple structure having two curved portions. It becomes a structure and becomes a coaxial connector with excellent productivity.
- the spring contact portion of the socket has a distance L1 to the first contact point that is a central force fulcrum of the central conductor of the receptacle and a center of the receptacle in a state before the central conductor of the receptacle is press-fitted.
- Central force of the conductor Distance L2 to the second contact and the central force of the central conductor of the receptacle Relationship force with the distance L3 to the third contact L1>L2> L3. It is preferable that LI ⁇ R when the radius of the central conductor of R is R.
- an insulating sheet having a thickness of 0.15 mm or less may be disposed between the connection portion where the socket and the central conductor of the coaxial cable are connected and the lid portion of the housing.
- the communication device includes the coaxial connector having the above-described characteristics, and can achieve a reduction in height.
- the spring rigidity in the radial direction of the cylindrical portion is provided. It becomes weak and the deformation of the housing when it is inserted into and removed from the receptacle is within the elastic deformation range. As a result, it is possible to avoid a situation where the contact force due to the destruction or plastic deformation of the housing is lost, and to obtain a coaxial connector that can connect the coaxial cable to the receptacle in a mechanically and electrically stable state and that is short. be able to.
- FIG. 1 is an exploded perspective view showing an embodiment of a coaxial connector according to the present invention.
- FIG. 3 is a partial perspective view of the housing.
- FIG. 4 is a perspective view of the lower portion of the cylindrical portion of the housing.
- FIG. 5 is a perspective view from another angle of FIG.
- FIG. 6 is a partially enlarged view of FIG.
- FIG. 7 is a graph showing the relationship between the cutting angle ⁇ and the insertion force.
- FIG. 8 is an assembled perspective view of the coaxial connector shown in FIG.
- FIG. 10 is an enlarged perspective view of the socket and the central conductor of the receptacle.
- FIG. 11 is a perspective view showing a fitting state between the socket and the center conductor of the receptacle.
- FIG. 12 (A) shows the shape of the spring contact before mating with the receptacle center conductor (optimal shape)
- (B) is a plan view showing the shape of the spring contact portion after fitting.
- FIG. 13 (A), (B), and (C) are explanatory diagrams for explaining the optimum shape of the spring contact portion, respectively.
- FIG. 14 A variation of the socket is shown.
- (A) is a plan view showing the shape (optimum shape) of the spring contact portion before mating with the receptacle center conductor, and (B) is the spring contact after mating. The top view which shows the shape of a part.
- FIG. 15 Another variation of the socket is shown, (A) is a plan view showing the shape (optimum shape) of the spring contact portion before mating with the central conductor of the receptacle, and (B) is after mating The top view which shows the shape of a spring contact part.
- FIG. 16 is a block diagram showing a high-frequency circuit of a communication device according to the present invention.
- FIG. 17 is an exploded perspective view showing an example of a conventional coaxial connector.
- FIG. 18 is an explanatory view showing an example of a socket in a conventional coaxial connector.
- the coaxial connector 1 includes a coaxial cable 26, a housing 21 having a springy metal force, a bushing 22 made of an insulating resin fitted in the housing 21, and a bushing.
- the socket 2 and the insulating sheet 20 also have a metal force having a spring property held by 22.
- the housing 21 includes a cylindrical portion 24 that contacts the outer conductor 42 of the receptacle 41, a lid portion 25 that covers the upper opening of the cylindrical portion 24, and an outer conductor of the coaxial cable 26 that is drawn from the cylindrical portion 24.
- a pair of arc-shaped covers 27 covering both sides of the cover 27, a force pulled out of the cover 25 and crimped onto the cover 27 to grip the coaxial cable 26 from above the cover 27 Has a shim 28.
- a portion of the force squeeze portion 28 is a claw portion 28 a that is force squeezed onto the outer skin 26 b of the coaxial cable 26.
- the upper opening force is also inserted and fixed.
- FIG. 2 is a development view showing the outer surface of the housing 21. However, for the sake of simplicity, the lid portion 25 and the force shim portion 28 are omitted.
- the cylindrical portion 24 is rounded and the cover portion 27 is bent along the dotted line L to obtain the one shown in FIG.
- FIG. 4 shows a lower portion of the cylindrical portion 24 shown in FIG. Two arm portions 24c are formed by the horizontal cuts 24b.
- the gap (gap) of the transverse notch 24b and the gap (gap) 33 where the ends C and D of the two arm portions 24c face each other are easily divided. The force expressed as being away to do is actually in contact. In other words, the horizontal cut 24b is only cut by a press die along the cut line.
- the gap 33 functions as a longitudinal cut provided in a direction parallel to the press-fitting direction of the center conductor 43 of the receptacle 41 from the lower end of the cylindrical portion 24.
- the vertical cut 33 is located at the center of the horizontal cut 24b, and the vertical cut 33 is substantially connected to the horizontal cut 24b. That is, in the present embodiment, the lower portion of the cylindrical portion 24 of the housing 21 is provided with a longitudinal cut 33 in a direction parallel to the press-fitting direction of the central conductor 43 of the receptacle 41 from the lower end of the cylindrical portion 24, and A horizontal cut 24b is provided from the vertical cut 33 in a direction perpendicular to the press-fitting direction of the central conductor 43 of the receptacle 41.
- FIG. 5 is a perspective view from another angle of FIG. 3, and FIG. 6 is a partially enlarged view thereof.
- the line connecting the longitudinal notch 33 and the axis Q of the cylindrical portion 24 is defined as the reference line G
- the angle to the end of the lateral notch 24b is defined as the incision angle ⁇ .
- the horizontal cuts 24b are provided on the lower side of the cover portion 27 symmetrically with respect to the insertion portion of the coaxial cable 26.
- Two arm portions 24c are formed on the lower side portion of the cylindrical portion 24 by the transverse notches 24b.
- Two vertical slits 31 are formed at a position approximately 120 ° apart from the position where the cutting angle ⁇ is 0 °.
- FIG. 7 shows the simulation data of the heel input when the cutting angle ⁇ is increased to 0 °, 60 °, and 90 °. It can be seen that the insertion force decreases as the cutting angle ⁇ increases.
- the upper limit of the cut angle ⁇ was less than 90 °. The reason is as follows. If the cut angle ⁇ is set to 90 ° or more, if the vicinity of the end portion of the horizontal cut 24b is plastically deformed, the cross-sectional shape of the cylindrical portion 24 is not circular. For this reason, when the winding angle with respect to the cylindrical outer conductor 42 of the receptacle 41 is less than 180 ° and an external force is applied in the axial direction of the coaxial cable 26, the hook force of the arm portion 24c is eliminated, and the coaxial connector This is because rattling of 1 and the receptacle 41 occurs.
- the necessary insertion force, the elastic limit value of the material, the manufacturing accuracy of the cutting angle ⁇ , and the like were examined, and the optimum cutting angle ⁇ was about 76 °.
- the starting point of the horizontal cut 24b is from the position at the cut angle ⁇ ⁇ . This value is unique to the present embodiment, and varies depending on the design.
- the pushing 22 has a tapered shape in which the outer diameter on the front end side (lower side) is smaller than the outer diameter on the upper side in the insertion direction of the housing 21 into the cylindrical portion 24. ing.
- the pushing 22 On the upper part of the bushing 22, two projecting pieces 22 a projecting in the radial direction are provided facing each other. These two projecting pieces 22a are fitted into a cutout portion 24a formed on the upper opening side of the cylindrical portion 24. Thereby, the pushing 22 is positioned with respect to the housing 21.
- the pushing 22 is a socket 2 penetrating in the direction of the central axis of the pushing 22 and a rectangular fitting recess 32 into which a support portion 3a of a spring contact portion 3 of the socket 2 described later is fitted. And a spring contact portion accommodating hole 35 for accommodating the spring contact portion 3.
- the socket displaced radially outward by the press-fitting of the central conductor 43 of the receptacle 41 is inserted. There is enough space to accept the spring contact 3 of
- the socket 2 has a spring contact portion 3 and a connection portion 9 connected to the central conductor 26c of the coaxial cable 26.
- the spring contact portion 3 is obtained by rounding a leaf spring (phosphor bronze) having a constant width of 0.1 mm and bending it so as to have a substantially C-shaped cross section.
- the spring contact portion 3 is displaced radially outward and press-contacted with the outer peripheral surface of the center conductor 43 at a predetermined location.
- the inner diameter of the spring contact portion 3 is set to be smaller than the outer diameter of the center conductor 43 within a range not exceeding the elastic limit. Further, the lower side 3b of the spring contact portion 3 is chamfered so that the central conductor 43 can be easily inserted.
- the spring contact portion 3 has a support portion 3a at an upper portion thereof.
- the support portion 3a has a size substantially equal to the size of the fitting recess 32 of the bushing 22 and is pulled out integrally from the spring contact portion 3.
- a connecting portion 9 for electrically connecting the central conductor 26c of the coaxial cable 26 is drawn out from the support portion 3a.
- the connecting portion 9 is bent in a direction perpendicular to the central axis direction of the spring contact portion 3.
- the support portion 3a of the spring contact portion 3 is fitted into the fitting recess portion 32 of the pushing 22, and the spring contact portion 3 is placed in the spring contact portion receiving hole 35. Be contained.
- the pushing 22 is accommodated in the cylindrical part 24 of the nosing 21.
- the tip end portion of the center conductor 26c of the coaxial cable 26 that is covered with the terminal is disposed, and the center conductor 26c and the connection portion 9 are soldered. As a result, the socket 2 is electrically connected to the central conductor 26c of the coaxial cable 26.
- the insulating sheet 20 (thickness: 0.1 to 0.15 mm) that has been cut in a fixed shape is disposed in a recess 22b provided on the upper surface of the pushing 22.
- the lid portion 25 of the housing 21 is bent and placed on the upper surface of the pushing 22.
- an adhesive insulating sheet 20 may be attached in advance to the back surface of the lid portion 25 of the housing 21, and may be displayed (indicated by a dotted line in FIG. )
- the force crimping portion 28 of the housing 21 is crimped onto the pair of cover portions 27 so that these Hold the coaxial cable 26 from above the cover 27. Further, the claw 28 a is crimped onto the outer skin 26 b of the coaxial cable 26.
- the coaxial connector 1 thus obtained can be adjusted in contact force and insertion / extraction force by the lateral cut 24b even when it becomes difficult to secure the vertical slit 31 in the cylindrical portion 24 due to the low profile. . Accordingly, it is possible to prevent plastic deformation due to the displacement during insertion into the receptacle 41, and a stable fitting can be obtained even during repeated insertion and extraction.
- the cylindrical central conductor 43 of the receptacle 41 When coupled to the receptacle 41, the cylindrical central conductor 43 of the receptacle 41 is press-fitted into the spring contact portion 3 of the socket 2.
- the tip of the central conductor 43 is processed so as to be an R surface or a C surface.
- the spring contact portion 3 is displaced radially outward by the press-fitting of the central conductor 43 of the receptacle 41, and is pressed against the outer peripheral surface of the central conductor 43 by the spring force.
- a contact portion between the spring contact portion 3 of the socket 2 of the coaxial connector 1 of the present embodiment and the center conductor 43 of the receptacle 41 extends in the outer peripheral direction of the center conductor 43. Therefore, the height of the connecting portion between the socket 2 and the central conductor 43 of the receptacle 41 can be reduced.
- the spring limit of the spring contact portion 3 of the socket 2 is always constant regardless of the press-fitting stroke in which the central conductor 43 of the receptacle 41 is press-fitted. Therefore, the spring contact portion 3 of the socket 2 can stably contact the center conductor 43, and the mechanical and electrical reliability and stability of the coupling state of the coaxial connector 1 and the receptacle 41 can be sufficiently secured. it can. As a result, a coaxial connector that can be coupled to the receptacle in a mechanically and electrically stable state and that is short is obtained.
- the upper portion of the cylindrical portion 24 of the housing 21 is connected over the entire circumference (or fixed so as not to spread).
- a gap (so-called vertical cut) 33 formed by facing the ends C and D of the two arm parts 24 c extends from the lower end of the cylindrical part 24,
- the vertical cut 33 has a structure in which the horizontal cut 24b is substantially connected. Therefore, instead of the vertical cut 33, a vertical slit 31 may be formed, and the horizontal cut 24b may be substantially connected to the vertical slit 31.
- FIG. 10 shows a state before the socket 2 and the center conductor 43 of the receptacle 41 are fitted together
- FIG. 11 shows a state where the socket 2 is fitted to the center conductor 43.
- FIG. 12 (A) is a diagram showing the shape (optimum shape) of the spring contact portion 3 before mating with the central conductor 43 of the receptacle 41
- FIG. FIG. 5 is a view showing the shape of the spring contact portion 3 after being joined.
- the spring contact portion 3 is set to a dimension so as to be inscribed with a circle K having a virtual diameter ⁇ of 0.42 mm.
- the spring contact part 3 has two curved parts Rl and R2.
- the spring contact portion 3 is within the range below the elastic limit and radially outward.
- the first contact Pl, the second contact ⁇ 2 and the third contact ⁇ 3 are arranged at equal intervals of 120 °, and the resistance (repulsive force) of the spring contact part 3 at each contact ⁇ 1 to ⁇ 3 is in the center direction of the center conductor 43. It acts as an urging force and uses this as a pressure contact force.
- each pressure contact force becomes substantially equal, and a stable contact state can be maintained.
- the spring contact portion 3 has a curved portion of ⁇ 1 so that it has ⁇ contacts on the outer peripheral surface of the center conductor 43 in the circumferential direction. That is, the three contacts ⁇ 1 to ⁇ 3 between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 can always be arranged at a fixed position, and the distance between the fulcrum and the force point does not change, so the contact force of the contact Can be stabilized.
- the first contact P1 serves as a fixed point (fulcrum) of the spring contact portion 3. This is because the socket 2 is positioned by fitting the support portion 3a into the fitting recess 32 of the bushing 22, and the pushing 22 is positioned by fitting the protrusion 22a into the notch 24a of the housing 21. Power. On the other hand, the second contact P2 and the third contact P3 are freely displaced.
- the spring contact portion 3 of the socket 2 is substantially C-shaped, and as shown in FIG. 12 (A), one vertex of the equilateral triangle is cut out, and the remaining vertex Is formed to be a curved surface, and between the apexes is formed in a substantially straight line shape.
- the spring contact portion 3 of the socket 2 is provided before the center conductor 43 of the receptacle 41 is press-fitted.
- the distance L1 to the first contact PI where the central force of the center conductor 43 is also a fulcrum, the distance L2 to the center force second contact P2 of the center conductor 43, and the center force of the center conductor 43 third contact P3 The relational force with distance L3 is L1>L2> L3 (see Fig. 13 (A)), and when the radius of center conductor 43 is R, LI ⁇ R is set!
- the second contact P2 is a power point.
- the third contact point P3 becomes the power point. Since the virtual diameter of the spring contact portion 3 is always set to be smaller than the diameter of the central conductor 43 of the receptacle 41, the second contact P2 serves both as a fulcrum and as a force point.
- the relationship between the distances L1 to L3 is L1 ⁇ L2 ⁇ L3 as shown in FIG. 13 (B), or the relationship between the distances L1 to L3 is L1> L2 as shown in FIG. 13 (C).
- L2 ⁇ L3 the second contact P2 and the third contact P3 are not formed, and the contact state between the spring contact portion 3 and the center conductor 43 becomes unstable.
- the force described in the example in which the number of the contacts P between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 is three is not necessarily limited to three.
- the number of contacts between the spring contact part 3 of the socket 2 and the central conductor 43 of the receptacle 41 is n (n ⁇ 3)
- the contacts P are arranged at equal intervals of 36 0 ° Zn
- the anti-contact of the contact P is centered. It can be directed to the center of the conductor 43, and the same effect as in the present embodiment can be obtained.
- FIG. 14 shows the shape (optimum shape) of the spring contact portion 3 before mating with the central conductor 43 of the receptacle 41, and Fig. 14 (B) shows the spring contact portion 3 after mating.
- FIG. 14 (A) shows the shape (optimum shape) of the spring contact portion 3 before mating with the central conductor 43 of the receptacle 41
- Fig. 14 (B) shows the spring contact portion 3 after mating.
- Fig. 15 (A) shows the shape (optimum shape) of the spring contact portion 3 before mating with the center conductor 43 of the receptacle 41
- Fig. 15 (B) shows the spring contact portion 3 after mating.
- the diameter of the cylindrical central conductor 43 of the receptacle 41 is always assumed to be the same dimension, the outermost diameter when the spring contact portion 3 and the central conductor 43 are fitted is increased as the number of contacts is increased. Dimensions are reduced. Therefore, the diameter of the outer conductor 42 of the receptacle 41 can be reduced, and the surface mount coaxial connector 1 having a small mounting area can be realized.
- FIG. 16 shows a high-frequency circuit 120 for a mobile phone.
- the high-frequency circuit 120 includes an antenna element 122, a duplexer 123, a connector 125, a transmission-side isolator 131, a transmission-side amplifier 132, and a transmission-side interstage circuit.
- VCO voltage-controlled oscillator
- the force S can be used by using the coaxial connector 1 and the receptacle 41 as the connector 125.
- the central conductor 26 c of the coaxial cable 26 is connected to the antenna element 122, and the central conductor 43 of the receptacle 41 is connected to the duplexer 123. This connection relationship may be reversed.
- the coaxial connector 1 and the receptacle 41 can also be used as a connector for connecting a plurality of substrates built in the mobile phone.
- coaxial connector and the communication device according to the present invention can be variously modified within the scope of the gist that is not limited to the above-described embodiments.
- the present invention is useful for a coaxial connector used for a component of a portable communication device and the like, and particularly, can be coupled to a receptacle in a mechanically and electrically stable state, It is excellent in that a low profile can be achieved.
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Abstract
A coaxial connector that can be connected to a receptacle in mechanically and electrically stable conditions and is low in height, and a communication device. A coaxial connector in which two longitudinal slits (31) are arranged at the lower section of a tubular section (24) that is in contact with an external conductor of a receptacle, the slits being in the direction parallel to the direction of insertion in a receptacle. A longitudinal cutout (33) is formed in the lower part of the tubular section (24), the cutout starting at the lower end of the tubular section (24) and being parallel to the direction of insertion in the receptacle. Further, a lateral cutout (24b) is provided from the longitudinal cutout (33) in the direction orthogonal to the direction of insertion in the receptacle. The lateral cutout (24b) is provided left-right symmetric relative to the longitudinal cutout (33).
Description
明 細 書 Specification
同軸コネクタ及び通信装置 Coaxial connector and communication device
技術分野 Technical field
[0001] 本発明は、同軸ケーブルを備えた同軸コネクタ、特に、携帯通信機器の構成部品 等として使用される同軸コネクタ及び通信装置に関する。 TECHNICAL FIELD [0001] The present invention relates to a coaxial connector provided with a coaxial cable, and more particularly to a coaxial connector and a communication device used as a component part of a portable communication device.
背景技術 Background art
[0002] 近年、通信機器は非常に小型で厚みも薄 ヽものが普及しつつある。それに伴って、 これらの機器に使用される電子部品も小型で背の低いものが使用されており、同軸コ ネクタにあっても、小型で低背化されたものが求められている。特許文献 1に記載さ れているように、従来のこの種の同軸コネクタとして、図 17に示すものが知られている 。この同軸コネクタ 60は、金属製のハウジング 61、ソケット 62、プッシング 63及び同 軸ケーブル 66から構成されて!、る。 [0002] In recent years, communication devices having a very small size and a small thickness are spreading. Along with this, electronic components used in these devices are also small and short, and even coaxial connectors are required to be small and low-profile. As described in Patent Document 1, a conventional coaxial connector shown in FIG. 17 is known. The coaxial connector 60 includes a metal housing 61, a socket 62, a pushing 63, and a coaxial cable 66 !.
[0003] ノ、ウジング 61は、レセプタクル 81の外部導体 82に接触する筒状部 64を有し、同軸 ケーブル 66の外導体 67に電気的に接続する。ソケット 62は略 C字形状をしており、 レセプタクル 81の中心導体 83に巻き付くように接触し、かつ同軸ケーブル 66の中心 導体 68に接続される。このソケット 62は、ハウジング 61の筒状部 64をその軸方向に 短くすることが可能であり、同軸コネクタ 60の低背化に寄与する。プッシング 63は、ソ ケット 62を収容する収容孔 63aを有し、ハウジング 61の筒状部 64内に装着される。 [0003] The woozing 61 has a cylindrical portion 64 that contacts the outer conductor 82 of the receptacle 81, and is electrically connected to the outer conductor 67 of the coaxial cable 66. The socket 62 is substantially C-shaped, contacts the central conductor 83 of the receptacle 81 so as to wrap around, and is connected to the central conductor 68 of the coaxial cable 66. The socket 62 can shorten the cylindrical portion 64 of the housing 61 in the axial direction, and contributes to a reduction in the height of the coaxial connector 60. The pushing 63 has an accommodation hole 63 a for accommodating the socket 62, and is mounted in the cylindrical portion 64 of the housing 61.
[0004] また、ハウジング 61の筒状部 64の下部には、レセプタクル 81の挿入方向に対して 平行な方向に数本の縦スリット 65が設けられている。縦スリット 65を設けることにより、 レセプタクル 81と同軸コネクタ 60が嵌合する際に、筒状部 64は半径外側方向へ若 干開くことができ、半径内側方向への反力を得ることができる。そして、筒状部 64の 下端内側に周方向に設けられた凸部がレセプタクルロック溝 84に達すると、筒状部 6 4の反力によって凸部がレセプタクルロック溝 84にはまり、同軸コネクタ 60とレセプタ クル 81の適度なロック感が得られる。 In addition, several vertical slits 65 are provided in a direction parallel to the insertion direction of the receptacle 81 at the lower part of the cylindrical portion 64 of the housing 61. By providing the vertical slit 65, when the receptacle 81 and the coaxial connector 60 are fitted, the cylindrical portion 64 can be slightly opened in the radially outward direction, and a reaction force in the radially inward direction can be obtained. When the convex portion provided in the circumferential direction on the inner side of the lower end of the cylindrical portion 64 reaches the receptacle lock groove 84, the convex portion fits into the receptacle lock groove 84 due to the reaction force of the cylindrical portion 64, and the coaxial connector 60 A moderate lock feeling of the receptacle 81 is obtained.
[0005] 一方、縦スリット 65がないと、筒状部 64をレセプタクル 81の外部導体 82に挿入す るときに、前述の凸部が外部導体 82に当たる。そして、無理に挿入すると、筒状部 6
4の破壊を起こすおそれがある。 On the other hand, when the vertical slit 65 is not provided, the above-described convex portion hits the outer conductor 82 when the cylindrical portion 64 is inserted into the outer conductor 82 of the receptacle 81. When it is inserted forcibly, the cylindrical part 6 4 may be destroyed.
[0006] また、縦スリット 65を長くするにつれて、筒状部 64の半径方向のばね剛性が弱くな り、筒状部 64の破壊は起こりに《なる。しかし、同時に、剛性低下による接触力の低 下も起きるため、縦スリット 65の長さはハウジング 61の形状、材質によって最適な寸 法を選択しなければならな 、。 [0006] Further, as the longitudinal slit 65 is lengthened, the spring stiffness in the radial direction of the tubular portion 64 becomes weaker, and the tubular portion 64 is destroyed. At the same time, however, the contact force decreases due to a decrease in rigidity, so the length of the vertical slit 65 must be selected according to the shape and material of the housing 61.
[0007] ところが、近年の低背化の要求が強ぐ縦スリット 65の長さを十分に確保できない状 況になってきている。このため、嵌合挿入力が強すぎたり、嵌合を繰り返すうちに材料 の弾性限度を超える応力が発生し、塑性変形によって接触力が安定しないという問 題があった。 [0007] However, in recent years, the length of the vertical slit 65, which has been increasingly demanded to reduce the height, cannot be sufficiently secured. For this reason, there was a problem that the mating insertion force was too strong, or stress that exceeded the elastic limit of the material was generated while the mating was repeated, and the contact force was not stabilized by plastic deformation.
[0008] また、図 18に示すように、ソケット 62は、小型 ·低背化のために、一定幅を有する板 ばねを横断面形状が C字状となるように湾曲させた形状のばね接触部 62aを有して いる。ばね接触部 62aは、レセプタクルの中心導体 83が圧入されると、その径方向外 方に変位し、中心導体 83の外周面にばね接触部 62aの内周面の任意の部分が圧 接する。つまり、 C字形のばね接触部 62aが、相手側レセプタクルの円筒型中心導体 83を包み込む構造になっている。しかしながら、このソケット 62は、ばね接触部 62aと 円筒型中心導体 83との接点位置が一定ではないため、接点の接触力が安定しない という問題があった。 Further, as shown in FIG. 18, the socket 62 has a spring contact shape in which a flat spring having a constant width is curved so as to have a C-shaped cross section in order to reduce size and height. Part 62a. When the center conductor 83 of the receptacle is press-fitted, the spring contact portion 62a is displaced outward in the radial direction, and an arbitrary portion of the inner peripheral surface of the spring contact portion 62a is pressed against the outer peripheral surface of the center conductor 83. That is, the C-shaped spring contact portion 62a wraps around the cylindrical central conductor 83 of the mating receptacle. However, this socket 62 has a problem that the contact force of the contact is not stable because the contact position between the spring contact portion 62a and the cylindrical center conductor 83 is not constant.
特許文献 1:特開平 11― 307158号公報 Patent Document 1: Japanese Patent Laid-Open No. 11-307158
発明の開示 Disclosure of the invention
発明が解決しょうとする課題 Problems to be solved by the invention
[0009] そこで、本発明の目的は、機械的及び電気的に安定した状態でレセプタクルに結 合でき、かつ、背が低い同軸コネクタ及び通信装置を提供することにある。 Therefore, an object of the present invention is to provide a coaxial connector and a communication device that can be coupled to a receptacle in a mechanically and electrically stable state and that are short.
課題を解決するための手段 Means for solving the problem
[0010] 前記目的を達成するため、本発明に係る同軸コネクタは、 In order to achieve the above object, a coaxial connector according to the present invention includes:
中心導体と外導体を有した同軸ケーブルと、 A coaxial cable having a center conductor and an outer conductor;
レセプタクルの外部導体に接触する筒状部を有し、前記同軸ケーブルの外導体に 電気的に接続するハウジングと、 A housing having a cylindrical portion in contact with the outer conductor of the receptacle and electrically connected to the outer conductor of the coaxial cable;
前記レセプタクルの中心導体が圧入されて径方向外方に拡がり、該中心導体の外
周面に圧接するばね接触部と、該ばね接触部力 一体に引き出されかつばね接触 部の中心軸方向に対して略直交する方向に折曲された、同軸ケーブルの中心導体 に接続される接続部とを有したソケットと、 The center conductor of the receptacle is press-fitted and expands outward in the radial direction. A spring contact portion that is pressed against the peripheral surface, and a connection that is connected to the central conductor of the coaxial cable that is drawn out integrally with the spring contact portion force and is bent in a direction substantially perpendicular to the central axis direction of the spring contact portion A socket having a portion;
前記ソケットを収容する収容孔を有し、ハウジングの筒状部内に装着されるブッシン グとを備え、 A housing having a housing hole for housing the socket, and a bushing mounted in a cylindrical portion of the housing;
前記ハウジングの筒状部の下部に、該筒状部の下端力 前記レセプタクルの中心 導体の圧入方向に対して略平行な方向に縦切り込みを設け、かつ、該縦切り込みか ら前記レセプタクルの中心導体の圧入方向に対して略垂直な方向に横切り込みを設 けたこと、 A lower end force of the cylindrical portion is provided at a lower portion of the cylindrical portion of the housing, and a vertical cut is provided in a direction substantially parallel to a press-fitting direction of the central conductor of the receptacle, and the central conductor of the receptacle is formed from the vertical cut. A transverse cut was made in a direction substantially perpendicular to the press-in direction of
を特徴とする。 It is characterized by.
[0011] 本発明に係る同軸コネクタは、筒状部の上部に同軸ケーブルの挿入部が設けられ ており、該揷入部の下側に縦切込みが設けられ、横切り込みが該縦切り込みを基準 にして左右対称に設けられて 、ることが好まし!/、。 In the coaxial connector according to the present invention, an insertion portion of the coaxial cable is provided at the upper portion of the tubular portion, a vertical cut is provided below the insertion portion, and the horizontal cut is based on the vertical cut. It is preferable that it is provided symmetrically!
[0012] さらに、筒状部の下部には、筒状部の下端からレセプタクルの中心導体の圧入方 向に対して略平行な方向に縦スリットを設けてもょ ヽ。 [0012] Further, a vertical slit may be provided in the lower part of the cylindrical part in a direction substantially parallel to the press-fitting direction of the central conductor of the receptacle from the lower end of the cylindrical part.
[0013] また、本発明に係る同軸コネクタにおいて、ソケットのばね接触部は、横断面が略 C 字形状を有し、レセプタクルの中心導体の外周面に周方向にお 、て n個の接点を有 するように n— 1の曲部を有して 、ることが好まし 、。ソケットのばね接触部とレセプタ クルの中心導体との n個の接点を、常に一定の位置に配置できるので、接点の接触 力を安定させることができる。この結果、同軸ケーブルを機械的及び電気的に安定し た状態でレセプタクルに結合でき、かつ、背が低い同軸コネクタが得られる。特に、ソ ケットのばね接触部とレセプタクルの中心導体力 略 120° の間隔で配置された第 1 接点、第 2接点及び第 3接点を有する場合、ばね接触部は二つの曲部を有する簡素 な構造となり、生産性の優れた同軸コネクタとなる。 [0013] Further, in the coaxial connector according to the present invention, the spring contact portion of the socket has a substantially C-shaped cross section, and n contacts are arranged on the outer peripheral surface of the central conductor of the receptacle in the circumferential direction. It is preferable to have n—1 tunes, as you have. Since the n contacts between the spring contact portion of the socket and the center conductor of the receptacle can always be arranged at a fixed position, the contact force of the contact can be stabilized. As a result, the coaxial cable can be coupled to the receptacle in a mechanically and electrically stable state, and a low-profile coaxial connector can be obtained. In particular, when the first and second contacts are arranged at an interval of about 120 ° between the socket spring contact portion and the receptacle center conductor force, the spring contact portion is a simple structure having two curved portions. It becomes a structure and becomes a coaxial connector with excellent productivity.
[0014] さらに、ソケットのばね接触部は、レセプタクルの中心導体が圧入される前の状態に おいて、レセプタクルの中心導体の中心力 支点である第 1接点までの距離 L1と、レ セプタクルの中心導体の中心力 第 2接点までの距離 L2と、レセプタクルの中心導 体の中心力 第 3接点までの距離 L3との関係力 L1 >L2>L3であり、レセプタクル
の中心導体の半径を Rとしたときに LI≤Rであることが好ましい。 [0014] Furthermore, the spring contact portion of the socket has a distance L1 to the first contact point that is a central force fulcrum of the central conductor of the receptacle and a center of the receptacle in a state before the central conductor of the receptacle is press-fitted. Central force of the conductor Distance L2 to the second contact and the central force of the central conductor of the receptacle Relationship force with the distance L3 to the third contact L1>L2> L3. It is preferable that LI≤R when the radius of the central conductor of R is R.
[0015] また、ソケットと同軸ケーブルの中心導体とが接続される接続部と、ハウジングの蓋 部との間には、厚さ 0. 15mm以下の絶縁シートが配置されていてもよい。 [0015] In addition, an insulating sheet having a thickness of 0.15 mm or less may be disposed between the connection portion where the socket and the central conductor of the coaxial cable are connected and the lid portion of the housing.
[0016] 本発明に係る通信装置は、前述の特徴を有する同軸コネクタを備えたもので、低背 化を達成することができる。 The communication device according to the present invention includes the coaxial connector having the above-described characteristics, and can achieve a reduction in height.
発明の効果 The invention's effect
[0017] 本発明によれば、ハウジングの筒状部の下部に、レセプタクルの中心導体の圧入 方向に対して略垂直な方向に横切り込みを設けたので、筒状部半径方向のばね剛 性が弱くなり、レセプタクルに挿抜するときのハウジングの変形が弾性変形範囲内と なる。その結果、ハウジングの破壊や塑性変形に伴う接触力を失う事態を避けること ができ、同軸ケーブルを機械的及び電気的に安定した状態でレセプタクルに結合で き、かつ、背が低い同軸コネクタを得ることができる。 [0017] According to the present invention, since the transverse cut is provided in the lower portion of the cylindrical portion of the housing in a direction substantially perpendicular to the press-fitting direction of the central conductor of the receptacle, the spring rigidity in the radial direction of the cylindrical portion is provided. It becomes weak and the deformation of the housing when it is inserted into and removed from the receptacle is within the elastic deformation range. As a result, it is possible to avoid a situation where the contact force due to the destruction or plastic deformation of the housing is lost, and to obtain a coaxial connector that can connect the coaxial cable to the receptacle in a mechanically and electrically stable state and that is short. be able to.
図面の簡単な説明 Brief Description of Drawings
[0018] [図 1]本発明に係る同軸コネクタの一実施例を示す分解斜視図。 FIG. 1 is an exploded perspective view showing an embodiment of a coaxial connector according to the present invention.
[図 2]ハウジングの一部展開図。 [Fig. 2] Partial development of the housing.
[図 3]ハウジングの一部斜視図。 FIG. 3 is a partial perspective view of the housing.
[図 4]ハウジングの筒状部の下側部分の斜視図。 FIG. 4 is a perspective view of the lower portion of the cylindrical portion of the housing.
[図 5]図 3の別の角度からの斜視図。 FIG. 5 is a perspective view from another angle of FIG.
[図 6]図 5の一部拡大図。 FIG. 6 is a partially enlarged view of FIG.
[図 7]切り込み角 Θと挿入力との関係を示すグラフ。 FIG. 7 is a graph showing the relationship between the cutting angle Θ and the insertion force.
[図 8]図 1に示した同軸コネクタの組立斜視図。 FIG. 8 is an assembled perspective view of the coaxial connector shown in FIG.
[図 9]図 8の IX— IX断面図。 [Fig. 9] IX—IX cross section of FIG.
[図 10]ソケットとレセプタクルの中心導体との拡大斜視図。 FIG. 10 is an enlarged perspective view of the socket and the central conductor of the receptacle.
[図 11]ソケットとレセプタクルの中心導体との嵌合状態を示す斜視図。 FIG. 11 is a perspective view showing a fitting state between the socket and the center conductor of the receptacle.
[図 12] (A)はレセプタクルの中心導体と嵌合する前のばね接触部の形状 (最適形状 [Fig. 12] (A) shows the shape of the spring contact before mating with the receptacle center conductor (optimal shape)
)を示す平面図、(B)は嵌合した後のばね接触部の形状を示す平面図。 (B) is a plan view showing the shape of the spring contact portion after fitting.
[図 13] (A) , (B) , (C)はそれぞればね接触部の最適形状を説明するための説明図
[図 14]ソケットの変形例を示し、 (A)はレセプタクルの中心導体と嵌合する前のばね 接触部の形状 (最適形状)を示す平面図、(B)は嵌合した後のばね接触部の形状を 示す平面図。 [FIG. 13] (A), (B), and (C) are explanatory diagrams for explaining the optimum shape of the spring contact portion, respectively. [FIG. 14] A variation of the socket is shown. (A) is a plan view showing the shape (optimum shape) of the spring contact portion before mating with the receptacle center conductor, and (B) is the spring contact after mating. The top view which shows the shape of a part.
[図 15]ソケットの他の変形例を示し、 (A)はレセプタクルの中心導体と嵌合する前の ばね接触部の形状 (最適形状)を示す平面図、(B)は嵌合した後のばね接触部の形 状を示す平面図。 [FIG. 15] Another variation of the socket is shown, (A) is a plan view showing the shape (optimum shape) of the spring contact portion before mating with the central conductor of the receptacle, and (B) is after mating The top view which shows the shape of a spring contact part.
[図 16]本発明に係る通信装置の高周波回路を示すブロック図。 FIG. 16 is a block diagram showing a high-frequency circuit of a communication device according to the present invention.
[図 17]従来の同軸コネクタの一例を示す分解斜視図。 FIG. 17 is an exploded perspective view showing an example of a conventional coaxial connector.
[図 18]従来の同軸コネクタにおけるソケットの一例を示す説明図。 FIG. 18 is an explanatory view showing an example of a socket in a conventional coaxial connector.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0019] 以下、本発明に係る同軸コネクタ及び通信装置の実施例について添付図面を参照 して詳細に説明する。 Hereinafter, embodiments of a coaxial connector and a communication device according to the present invention will be described in detail with reference to the accompanying drawings.
[0020] 図 1に示すように、同軸コネクタ 1は、同軸ケーブル 26、ばね性を有する金属力 な るハウジング 21、ハウジング 21内に装着される絶縁性を有する榭脂からなるブッシン グ 22、プッシング 22に保持されるばね性を有する金属力もなるソケット 2、絶縁シート 20を有している。 [0020] As shown in FIG. 1, the coaxial connector 1 includes a coaxial cable 26, a housing 21 having a springy metal force, a bushing 22 made of an insulating resin fitted in the housing 21, and a bushing. The socket 2 and the insulating sheet 20 also have a metal force having a spring property held by 22.
[0021] ハウジング 21は、レセプタクル 41の外部導体 42に接触する筒状部 24、該筒状部 2 4の上部開口を覆う蓋部 25、筒状部 24から引き出されて同軸ケーブル 26の外導体 2 6aをその両側からそれぞれ覆う断面円弧状の一対のカバー部 27、蓋部 25から引き 出されてカバー部 27の上にカシメられてこれらカバー部 27の上から同軸ケーブル 2 6を把持する力シメ部 28を有している。力シメ部 28は、その一部が同軸ケーブル 26 の外皮 26bの上に力シメられる爪部 28aとなっている。ハウジング 21の筒状部 24内 には、上部開口力もプッシング 22が挿入されて固定される。 The housing 21 includes a cylindrical portion 24 that contacts the outer conductor 42 of the receptacle 41, a lid portion 25 that covers the upper opening of the cylindrical portion 24, and an outer conductor of the coaxial cable 26 that is drawn from the cylindrical portion 24. 2 6a A pair of arc-shaped covers 27 covering both sides of the cover 27, a force pulled out of the cover 25 and crimped onto the cover 27 to grip the coaxial cable 26 from above the cover 27 Has a shim 28. A portion of the force squeeze portion 28 is a claw portion 28 a that is force squeezed onto the outer skin 26 b of the coaxial cable 26. In the cylindrical part 24 of the housing 21, the upper opening force is also inserted and fixed.
[0022] 筒状部 24の下部には、レセプタクル 41の挿入方向に対して平行な方向に 2本の縦 スリット 31が設けられている。さらに、筒状部 24には、レセプタクル挿入方向に対して 略垂直な方向に横切り込み 24bが設けられている。この横切り込み 24bによって、筒 状部 24の半径方向のばね剛性が弱くなり、レセプタクル 41に挿抜するときのハウジ ング 21の変形が弾性変形範囲内となる。
[0023] より詳細に説明すると、図 2はハウジング 21の外面を示す展開図である。但し、簡 略のため、蓋部 25と力シメ部 28は省略している。筒状部 24を丸め加工するとともに、 カバー部 27を点線 Lで折り曲げカ卩ェすることにより、図 3に示すものが得られる。 [0022] Under the cylindrical portion 24, two vertical slits 31 are provided in a direction parallel to the insertion direction of the receptacle 41. Further, the cylindrical portion 24 is provided with a transverse cut 24b in a direction substantially perpendicular to the receptacle insertion direction. This lateral cut 24b weakens the spring stiffness in the radial direction of the cylindrical portion 24, and the deformation of the housing 21 when inserted into and removed from the receptacle 41 is within the elastic deformation range. In more detail, FIG. 2 is a development view showing the outer surface of the housing 21. However, for the sake of simplicity, the lid portion 25 and the force shim portion 28 are omitted. The cylindrical portion 24 is rounded and the cover portion 27 is bent along the dotted line L to obtain the one shown in FIG.
[0024] 図 4は、図 3に示した筒状部 24の下側部分を示している。横切り込み 24bによって 二つのアーム部 24cが形成されている。なお、図 2〜図 4において、横切り込み 24b のギャップ(隙間)、及び二つのアーム部 24cのそれぞれの端部 C, Dが向き合った箇 所でのギャップ(隙間) 33は、分力り易くするために離れているように表現されている 力 実際には接触した状態である。つまり、横切り込み 24bは、切り込み線に沿って プレス金型で切断しただけである。 FIG. 4 shows a lower portion of the cylindrical portion 24 shown in FIG. Two arm portions 24c are formed by the horizontal cuts 24b. In FIGS. 2 to 4, the gap (gap) of the transverse notch 24b and the gap (gap) 33 where the ends C and D of the two arm portions 24c face each other are easily divided. The force expressed as being away to do is actually in contact. In other words, the horizontal cut 24b is only cut by a press die along the cut line.
[0025] ギャップ 33は、筒状部 24の下端からレセプタクル 41の中心導体 43の圧入方向に 対して平行な方向に設けた縦切り込みとして機能する。縦切り込み 33は横切り込み 2 4bの中央部に位置し、この縦切り込み 33に横切り込み 24bが実質的に繋がっている 構造になっている。即ち、本実施例において、ハウジング 21の筒状部 24の下部には 、該筒状部 24の下端からレセプタクル 41の中心導体 43の圧入方向に対して平行な 方向に縦切り込み 33を設け、かつ、該縦切り込み 33からレセプタクル 41の中心導体 43の圧入方向に対して垂直な方向に横切り込み 24bを設けた。 The gap 33 functions as a longitudinal cut provided in a direction parallel to the press-fitting direction of the center conductor 43 of the receptacle 41 from the lower end of the cylindrical portion 24. The vertical cut 33 is located at the center of the horizontal cut 24b, and the vertical cut 33 is substantially connected to the horizontal cut 24b. That is, in the present embodiment, the lower portion of the cylindrical portion 24 of the housing 21 is provided with a longitudinal cut 33 in a direction parallel to the press-fitting direction of the central conductor 43 of the receptacle 41 from the lower end of the cylindrical portion 24, and A horizontal cut 24b is provided from the vertical cut 33 in a direction perpendicular to the press-fitting direction of the central conductor 43 of the receptacle 41.
[0026] 図 5は図 3の別の角度からの斜視図であり、図 6はその一部拡大図である。図 5に示 すように、縦切り込み 33と筒状部 24の軸心 Qとを結ぶ線を基準線 Gとして、横切り込 み 24bの終端部までの角度を切り込み角 Θとする。言い換えると、カバー部 27の下 側に、横切り込み 24bが同軸ケーブル 26の挿入部を基準にして左右対称に設けら れていることになる。横切り込み 24bによって筒状部 24の下側部には、アーム部 24c が二つ形成される。縦スリット 31は切り込み角 Θが 0° の位置から略 120° 離れた箇 所に 2個形成されている。 FIG. 5 is a perspective view from another angle of FIG. 3, and FIG. 6 is a partially enlarged view thereof. As shown in FIG. 5, the line connecting the longitudinal notch 33 and the axis Q of the cylindrical portion 24 is defined as the reference line G, and the angle to the end of the lateral notch 24b is defined as the incision angle Θ. In other words, the horizontal cuts 24b are provided on the lower side of the cover portion 27 symmetrically with respect to the insertion portion of the coaxial cable 26. Two arm portions 24c are formed on the lower side portion of the cylindrical portion 24 by the transverse notches 24b. Two vertical slits 31 are formed at a position approximately 120 ° apart from the position where the cutting angle Θ is 0 °.
[0027] ここで、切り込み角 Θが小さいと、アーム部 24cが半径方向に開くばね剛性が強く なり、レセプタクル 41へ挿入する際に大きな力(挿入力)を必要とする。逆に、切り込 み角 Θが大きいと、レセプタクル 41へ挿入する際に小さい力でよい。 [0027] Here, when the cutting angle Θ is small, the rigidity of the spring that opens the arm portion 24c in the radial direction increases, and a large force (insertion force) is required for insertion into the receptacle 41. On the contrary, if the cutting angle Θ is large, a small force is required when inserting into the receptacle 41.
[0028] 図 6に示すように、アーム部 24cの先端に外力 Fを加え、アーム部 24cを 0. 1mm変 位をさせたときの応力状態を有限要素法を用いて計算したところ、切り込み角 Θが 0
° 、60° 、90° と大きくなるにつれてアーム部 24cの高応力部分は減少することが わかった。つまり、同じ変位に対しては、切り込み角 Θを大きくすることによって、ァー ム部 24cの塑性変形が起きに《なる。切り込み角 Θの下限はハウジング 21の材料 の弾性限界によって決定される。 [0028] As shown in FIG. 6, when the external force F was applied to the tip of the arm portion 24c and the stress state when the arm portion 24c was displaced by 0.1 mm was calculated using the finite element method, the cutting angle was calculated. Θ is 0 It was found that the high stress portion of the arm portion 24c decreases as the angle increases to °, 60 °, and 90 °. In other words, for the same displacement, increasing the cutting angle Θ causes plastic deformation of the arm portion 24c. The lower limit of the cut angle Θ is determined by the elastic limit of the material of the housing 21.
[0029] また、切り込み角 Θが大きくなりすぎると、アーム部 24cのばね剛性が弱くなるため 、必要な接触力や挿抜力を得られなくなる。従って、切り込み角 Θの上限は最低必 要揷入力によって決定される。図 7は切り込み角 Θを 0° 、 60° 、 90° と大きくしたと きの揷入力のシミュレーションデータである。切り込み角 Θを大きくしていくと、挿入力 が減少することがわかる。 [0029] If the cutting angle Θ is too large, the spring rigidity of the arm portion 24c is weakened, so that necessary contact force and insertion / extraction force cannot be obtained. Therefore, the upper limit of the cutting angle Θ is determined by the minimum required input. Figure 7 shows the simulation data of the heel input when the cutting angle Θ is increased to 0 °, 60 °, and 90 °. It can be seen that the insertion force decreases as the cutting angle Θ increases.
[0030] 切り込み角 Θの上限は 90° 未満とした。理由は以下のとおりである。切り込み角 Θ を 90° 以上に設定すると、仮に横切り込み 24bの終端部付近が塑性変形を起こした 場合、筒状部 24の横断面形状が円形ではなくなる。このため、レセプタクル 41の円 筒型外部導体 42に対して巻き付き角が 180° を下回り、同軸ケーブル 26の軸方向 に外力が力かったとき、アーム部 24cの引っ掛力りがなくなり、同軸コネクタ 1とレセプ タクル 41のがたつきを生じるからである。 [0030] The upper limit of the cut angle Θ was less than 90 °. The reason is as follows. If the cut angle Θ is set to 90 ° or more, if the vicinity of the end portion of the horizontal cut 24b is plastically deformed, the cross-sectional shape of the cylindrical portion 24 is not circular. For this reason, when the winding angle with respect to the cylindrical outer conductor 42 of the receptacle 41 is less than 180 ° and an external force is applied in the axial direction of the coaxial cable 26, the hook force of the arm portion 24c is eliminated, and the coaxial connector This is because rattling of 1 and the receptacle 41 occurs.
[0031] こうして、本実施例では、必要な挿入力、材料の弾性限界値、切り込み角 Θの製造 精度などを検討した結果、最適な切り込み角 Θを約 76° とした。但し、本実施例で は、図 5に示すように、横切り込み 24bの起点は切り込み角 θ Ι λで の位置からであ る。この値は本実施例固有のものであり、設計が異なれば変動する値である。 [0031] Thus, in this example, the necessary insertion force, the elastic limit value of the material, the manufacturing accuracy of the cutting angle Θ, and the like were examined, and the optimum cutting angle Θ was about 76 °. However, in this embodiment, as shown in FIG. 5, the starting point of the horizontal cut 24b is from the position at the cut angle θ θλ. This value is unique to the present embodiment, and varies depending on the design.
[0032] また、図 1に示すように、プッシング 22は、ハウジング 21の筒状部 24への挿入方向 先端側(下部側)の外径が上部側の外径よりも小さぐテーパ状となっている。ブッシ ング 22の上部には、径方向に突出した二つの突片 22aが対向して設けられている。 これら二つの突片 22aは、筒状部 24の上部開口側に形成された切欠き部 24aに嵌 合する。これにより、プッシング 22はハウジング 21に対して位置決めされる。 In addition, as shown in FIG. 1, the pushing 22 has a tapered shape in which the outer diameter on the front end side (lower side) is smaller than the outer diameter on the upper side in the insertion direction of the housing 21 into the cylindrical portion 24. ing. On the upper part of the bushing 22, two projecting pieces 22 a projecting in the radial direction are provided facing each other. These two projecting pieces 22a are fitted into a cutout portion 24a formed on the upper opening side of the cylindrical portion 24. Thereby, the pushing 22 is positioned with respect to the housing 21.
[0033] さらに、プッシング 22は、後述するソケット 2のばね接触部 3の支持部 3aが嵌合する 四角形状の嵌合凹部 32と、プッシング 22の中心軸の方向に貫通している、ソケット 2 のばね接触部 3を収容するばね接触部収容孔 35とを有している。ばね接触部収容 孔 35には、レセプタクル 41の中心導体 43の圧入により径方向外方に変位したソケッ
ト 2のばね接触部 3を受け入れるのに十分な空間が確保されている。 [0033] Further, the pushing 22 is a socket 2 penetrating in the direction of the central axis of the pushing 22 and a rectangular fitting recess 32 into which a support portion 3a of a spring contact portion 3 of the socket 2 described later is fitted. And a spring contact portion accommodating hole 35 for accommodating the spring contact portion 3. In the spring contact portion receiving hole 35, the socket displaced radially outward by the press-fitting of the central conductor 43 of the receptacle 41 is inserted. There is enough space to accept the spring contact 3 of
[0034] ソケット 2は、ばね接触部 3と、同軸ケーブル 26の中心導体 26cに接続される接続 部 9とを有している。ばね接触部 3は、一定幅を有する板厚 0. 1mmの板ばね(リン青 銅)を丸め加工して、横断面形状が略 C字状となるように湾曲させたものである。ばね 接触部 3は、レセプタクル 41の中心導体 43が圧入されると、その径方向外方に変位 し、中心導体 43の外周面と所定の箇所で圧接する。ばね接触部 3の内径は、弾性限 界以下の範囲内で、中心導体 43の外径より小さく設定される。また、ばね接触部 3の 下部側 3bは面取り加工が施され、中心導体 43が挿入し易い構造になっている。 The socket 2 has a spring contact portion 3 and a connection portion 9 connected to the central conductor 26c of the coaxial cable 26. The spring contact portion 3 is obtained by rounding a leaf spring (phosphor bronze) having a constant width of 0.1 mm and bending it so as to have a substantially C-shaped cross section. When the center conductor 43 of the receptacle 41 is press-fitted, the spring contact portion 3 is displaced radially outward and press-contacted with the outer peripheral surface of the center conductor 43 at a predetermined location. The inner diameter of the spring contact portion 3 is set to be smaller than the outer diameter of the center conductor 43 within a range not exceeding the elastic limit. Further, the lower side 3b of the spring contact portion 3 is chamfered so that the central conductor 43 can be easily inserted.
[0035] また、ばね接触部 3はその上部に支持部 3aを有している。支持部 3aはプッシング 2 2の嵌合凹部 32の寸法にほぼ等しい寸法を有しており、ばね接触部 3から一体に引 き出されている。支持部 3aからは、同軸ケーブル 26の中心導体 26cを電気的に接続 するための接続部 9がー体に引き出されている。接続部 9は、ばね接触部 3の中心軸 方向に対して直交する方向に折曲されて 、る。 [0035] Further, the spring contact portion 3 has a support portion 3a at an upper portion thereof. The support portion 3a has a size substantially equal to the size of the fitting recess 32 of the bushing 22 and is pulled out integrally from the spring contact portion 3. A connecting portion 9 for electrically connecting the central conductor 26c of the coaxial cable 26 is drawn out from the support portion 3a. The connecting portion 9 is bent in a direction perpendicular to the central axis direction of the spring contact portion 3.
[0036] ソケット 2は、図 8に示すように、ばね接触部 3の支持部 3aがプッシング 22の嵌合凹 部 32に嵌合するとともに、ばね接触部 3がばね接触部収容孔 35内に収容される。次 に、プッシング 22をノヽウジング 21の筒状部 24内に収容する。ソケット 2の接続部 9上 に、端末カ卩ェした同軸ケーブル 26の中心導体 26cの先端部が配置され、中心導体 26cと接続部 9がはんだ付けされる。これにより、ソケット 2が同軸ケーブル 26の中心 導体 26cに電気的に接続される。 As shown in FIG. 8, in the socket 2, the support portion 3a of the spring contact portion 3 is fitted into the fitting recess portion 32 of the pushing 22, and the spring contact portion 3 is placed in the spring contact portion receiving hole 35. Be contained. Next, the pushing 22 is accommodated in the cylindrical part 24 of the nosing 21. On the connection portion 9 of the socket 2, the tip end portion of the center conductor 26c of the coaxial cable 26 that is covered with the terminal is disposed, and the center conductor 26c and the connection portion 9 are soldered. As a result, the socket 2 is electrically connected to the central conductor 26c of the coaxial cable 26.
[0037] そして、定形カットした絶縁シート 20 (厚さ: 0. 1〜0. 15mm)がプッシング 22の上 面に設けた凹部 22bに配置される。この状態で、ハウジング 21の蓋部 25を折り曲げ プッシング 22の上面に被せる。 Then, the insulating sheet 20 (thickness: 0.1 to 0.15 mm) that has been cut in a fixed shape is disposed in a recess 22b provided on the upper surface of the pushing 22. In this state, the lid portion 25 of the housing 21 is bent and placed on the upper surface of the pushing 22.
[0038] これにより、図 9に示すように、ソケット 2と同軸ケーブル 26の中心導体 26cとが接続 される接続部と、ハウジング 21の蓋部 25との間力 絶縁シート 20で絶縁される。絶縁 シート 20には、厚みの薄いものを採用できるので、同軸コネクタ 1の低背化が可能と なる。なお、組立の際には、粘着性のある絶縁シート 20を予め、ハウジング 21の蓋部 25の裏面に貼り付けてお 、てもよ ヽ(図 8にお 、て点線にて表示して 、る)。 As a result, as shown in FIG. 9, insulation between the connection portion where the socket 2 and the central conductor 26 c of the coaxial cable 26 are connected and the lid portion 25 of the housing 21 is insulated by the insulating sheet 20. Since the insulating sheet 20 can be thin, the coaxial connector 1 can be reduced in height. When assembling, an adhesive insulating sheet 20 may be attached in advance to the back surface of the lid portion 25 of the housing 21, and may be displayed (indicated by a dotted line in FIG. )
[0039] 次に、ハウジング 21の力シメ部 28を一対のカバー部 27の上にカシメ付けてこれら
カバー部 27の上から同軸ケーブル 26を把持する。さらに、爪部 28aを同軸ケーブル 26の外皮 26bの上にカシメる。 Next, the force crimping portion 28 of the housing 21 is crimped onto the pair of cover portions 27 so that these Hold the coaxial cable 26 from above the cover 27. Further, the claw 28 a is crimped onto the outer skin 26 b of the coaxial cable 26.
[0040] こうして得られた同軸コネクタ 1は、低背化により、筒状部 24に縦スリット 31の確保 が難しくなつたときでも、横切り込み 24bによって接触力や挿抜力を調整することがで きる。従って、レセプタクル 41に挿入する際の変位による塑性変形を阻止でき、繰り 返し挿抜にも安定した嵌合が得られる。 [0040] The coaxial connector 1 thus obtained can be adjusted in contact force and insertion / extraction force by the lateral cut 24b even when it becomes difficult to secure the vertical slit 31 in the cylindrical portion 24 due to the low profile. . Accordingly, it is possible to prevent plastic deformation due to the displacement during insertion into the receptacle 41, and a stable fitting can be obtained even during repeated insertion and extraction.
[0041] また、レセプタクル 41に結合されると、レセプタクル 41の円筒型中心導体 43がソケ ット 2のばね接触部 3に圧入される。中心導体 43の先端部は R面または C面となるよう に加工されている。ばね接触部 3は、レセプタクル 41の中心導体 43の圧入によって 径方向外方に変位し、そのばね力により中心導体 43の外周面に圧接する。 When coupled to the receptacle 41, the cylindrical central conductor 43 of the receptacle 41 is press-fitted into the spring contact portion 3 of the socket 2. The tip of the central conductor 43 is processed so as to be an R surface or a C surface. The spring contact portion 3 is displaced radially outward by the press-fitting of the central conductor 43 of the receptacle 41, and is pressed against the outer peripheral surface of the central conductor 43 by the spring force.
[0042] 本実施例の同軸コネクタ 1のソケット 2のばね接触部 3とレセプタクル 41の中心導体 43との接触部分は、中心導体 43の外周方向に延在している。従って、ソケット 2とレ セプタクル 41の中心導体 43との結合部分の高さを低くすることができる。 A contact portion between the spring contact portion 3 of the socket 2 of the coaxial connector 1 of the present embodiment and the center conductor 43 of the receptacle 41 extends in the outer peripheral direction of the center conductor 43. Therefore, the height of the connecting portion between the socket 2 and the central conductor 43 of the receptacle 41 can be reduced.
[0043] また、同軸コネクタ 1を低背化しても、ソケット 2のばね接触部 3のばね限界は、レセ プタクル 41の中心導体 43が圧入される圧入のストロークに関係なく常に一定となる。 従って、ソケット 2のばね接触部 3は中心導体 43に安定に接触し、同軸コネクタ 1とレ セプタクル 41との結合状態の機械的及び電気的な信頼性や安定性を十分に確保す ることができる。この結果、機械的及び電気的に安定した状態でレセプタクルに結合 でき、かつ、背が低い同軸コネクタが得られる。 [0043] Even if the height of the coaxial connector 1 is reduced, the spring limit of the spring contact portion 3 of the socket 2 is always constant regardless of the press-fitting stroke in which the central conductor 43 of the receptacle 41 is press-fitted. Therefore, the spring contact portion 3 of the socket 2 can stably contact the center conductor 43, and the mechanical and electrical reliability and stability of the coupling state of the coaxial connector 1 and the receptacle 41 can be sufficiently secured. it can. As a result, a coaxial connector that can be coupled to the receptacle in a mechanically and electrically stable state and that is short is obtained.
[0044] なお、本実施例では、ハウジング 21の筒状部 24の上部が全周にわたって繋がって いる(または広がらないように固定されている)。そして、筒状部 24の下部においては 、筒状部 24の下端から、二つのアーム部 24cのそれぞれの端部 C, Dが向き合って 形成されるギャップ(いわゆる縦切り込み) 33が延在し、この縦切り込み 33に横切り 込み 24bが実質的に繋がっている構造になっている。従って、縦切り込み 33の代わ りに、縦スリット 31を形成してこの縦スリット 31に横切り込み 24bを実質的に繋げる構 造にしてもよい。 In the present embodiment, the upper portion of the cylindrical portion 24 of the housing 21 is connected over the entire circumference (or fixed so as not to spread). In the lower part of the cylindrical part 24, a gap (so-called vertical cut) 33 formed by facing the ends C and D of the two arm parts 24 c extends from the lower end of the cylindrical part 24, The vertical cut 33 has a structure in which the horizontal cut 24b is substantially connected. Therefore, instead of the vertical cut 33, a vertical slit 31 may be formed, and the horizontal cut 24b may be substantially connected to the vertical slit 31.
[0045] また、本実施例では、ハウジングの筒状部に本発明の横切り込みにカ卩えて、従来の 縦スリットも併せて形成して 、るが、必ずしも縦スリットは必要なものではな 、。
[0046] ここで、ソケット 2のばね接触部 3の構成,形状について説明する。図 10はソケット 2 とレセプタクル 41の中心導体 43との嵌合前の状態を示し、図 11はソケット 2が中心 導体 43に嵌合した状態を示す。 Further, in this embodiment, a conventional vertical slit is also formed in the cylindrical portion of the housing in addition to the horizontal cut of the present invention, but the vertical slit is not necessarily required. . Here, the configuration and shape of the spring contact portion 3 of the socket 2 will be described. FIG. 10 shows a state before the socket 2 and the center conductor 43 of the receptacle 41 are fitted together, and FIG. 11 shows a state where the socket 2 is fitted to the center conductor 43.
[0047] より詳細に説明すると、図 12 (A)はレセプタクル 41の中心導体 43と嵌合する前の ばね接触部 3の形状 (最適形状)を示す図であり、図 12 (B)は嵌合した後のばね接 触部 3の形状を示す図である。 More specifically, FIG. 12 (A) is a diagram showing the shape (optimum shape) of the spring contact portion 3 before mating with the central conductor 43 of the receptacle 41, and FIG. FIG. 5 is a view showing the shape of the spring contact portion 3 after being joined.
[0048] 図 12 (A)に示すように、嵌合前、ばね接触部 3は仮想径 φ 0. 42mmの円 Kと内接 するような寸法に設定される。ばね接触部 3は二つの曲部 Rl, R2を有している。 [0048] As shown in FIG. 12 (A), before fitting, the spring contact portion 3 is set to a dimension so as to be inscribed with a circle K having a virtual diameter φ of 0.42 mm. The spring contact part 3 has two curved parts Rl and R2.
[0049] そして、図 12 (B)に示すように、レセプタクル 41の中心導体 43が圧入されると (嵌 合後)、ばね接触部 3は弾性限界以下の範囲内で、その径方向外方に変位し、外径 Ο. 45mmの中心導体 43の外周面と 3箇所の接点 Ρ1〜Ρ3で圧接する。第 1接点 Pl、第 2接点 Ρ2及び第 3接点 Ρ3は 120° の等間隔で配置され、各接点 Ρ1〜Ρ3で のばね接触部 3の抗カ(反発力)は中心導体 43の中心方向に向力つて作用し、これ を圧接力として利用する。 [0049] Then, as shown in Fig. 12 (B), when the center conductor 43 of the receptacle 41 is press-fitted (after fitting), the spring contact portion 3 is within the range below the elastic limit and radially outward. To the outer peripheral surface of the center conductor 43 with an outer diameter of 4545 mm, and press contact with the three contacts Ρ1 to Ρ3. The first contact Pl, the second contact Ρ2 and the third contact Ρ3 are arranged at equal intervals of 120 °, and the resistance (repulsive force) of the spring contact part 3 at each contact Ρ1 to Ρ3 is in the center direction of the center conductor 43. It acts as an urging force and uses this as a pressure contact force.
[0050] これにより、各圧接力がほぼ均等となり、安定した接触状態を維持できる。このような 効果は、ばね接触部 3は中心導体 43の外周面に周方向にぉ 、て η個の接点を有す るように η—1の曲部を有していることに起因する。即ち、ソケット 2のばね接触部 3とレ セプタクル 41の中心導体 43との 3個の接点 Ρ1〜Ρ3を、常に一定の位置に配置でき 、支点と力点の距離が変化しないので、接点の接触力を安定させることができる。 [0050] Thereby, each pressure contact force becomes substantially equal, and a stable contact state can be maintained. Such an effect is attributed to the fact that the spring contact portion 3 has a curved portion of η−1 so that it has η contacts on the outer peripheral surface of the center conductor 43 in the circumferential direction. That is, the three contacts Ρ1 to Ρ3 between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 can always be arranged at a fixed position, and the distance between the fulcrum and the force point does not change, so the contact force of the contact Can be stabilized.
[0051] 接点 Ρ1〜Ρ3のうち第 1接点 P1がばね接触部 3の固定点(支点)となる。なぜなら、 ソケット 2は支持部 3aがプッシング 22の嵌合凹部 32に嵌合することにより位置決めさ れ、さらにプッシング 22は突片 22aがハウジング 21の切欠き部 24aに嵌合することに より位置決めされる力らである。一方、第 2接点 P2及び第 3接点 P3が自由に変位す ることになる。 [0051] Of the contacts Ρ1 to Ρ3, the first contact P1 serves as a fixed point (fulcrum) of the spring contact portion 3. This is because the socket 2 is positioned by fitting the support portion 3a into the fitting recess 32 of the bushing 22, and the pushing 22 is positioned by fitting the protrusion 22a into the notch 24a of the housing 21. Power. On the other hand, the second contact P2 and the third contact P3 are freely displaced.
[0052] 本実施例において、ソケット 2のばね接触部 3は略 C字形状をなし、図 12 (A)に示 すように、正三角形の一つの頂点部が切り欠かれ、残りの頂点部が曲面となるように 形成されており、各頂点部の間は略直線状に形成されている。 [0052] In this embodiment, the spring contact portion 3 of the socket 2 is substantially C-shaped, and as shown in FIG. 12 (A), one vertex of the equilateral triangle is cut out, and the remaining vertex Is formed to be a curved surface, and between the apexes is formed in a substantially straight line shape.
[0053] ここに、ソケット 2のばね接触部 3は、レセプタクル 41の中心導体 43が圧入される前
の状態において、中心導体 43の中心力も支点である第 1接点 PIまでの距離 L1と、 中心導体 43の中心力 第 2接点 P2までの距離 L2と、中心導体 43の中心力 第 3接 点 P3までの距離 L3との関係力 L1 >L2>L3であり(図 13 (A)参照)、中心導体 43 の半径を Rとしたときに LI≤Rであるように設定されて!、る。 [0053] Here, the spring contact portion 3 of the socket 2 is provided before the center conductor 43 of the receptacle 41 is press-fitted. In this state, the distance L1 to the first contact PI where the central force of the center conductor 43 is also a fulcrum, the distance L2 to the center force second contact P2 of the center conductor 43, and the center force of the center conductor 43 third contact P3 The relational force with distance L3 is L1>L2> L3 (see Fig. 13 (A)), and when the radius of center conductor 43 is R, LI≤R is set!
[0054] なお、接点が n個の場合には、支点である第 1接点 P1から一番離れた接点を第 n接 点 Pnとし、中心導体 43の中心力 第 n接点 Pnまでの距離 Lnとすれば、 L1 >L2"- >Ln及び LI≤Rであるように設定すればよい。 [0054] If there are n contacts, the contact farthest from the first contact P1, which is the fulcrum, is the nth contact Pn, and the center force of the center conductor 43 is the distance Ln to the nth contact Pn. Then set L1> L2 "-> Ln and LI≤R.
[0055] これにより、ソケット 2のばね接触部 3とレセプタクル 41の中心導体 43の嵌合が始ま ると、中心導体 43の先端部に R面もしくは C面が設けられているため、第 3接点 P3、 第 2接点 P2の順にばね接触部 3が変位する。従って、全ての接点 P1〜P3で、ばね 接触部 3と中心導体 43が確実に接触でき、ばね力を有効に使ったばね接触部 3を実 現できる。 [0055] As a result, when the spring contact portion 3 of the socket 2 and the center conductor 43 of the receptacle 41 start to be fitted, the R contact or the C surface is provided at the tip of the center conductor 43. Spring contact part 3 is displaced in the order of P3 and second contact P2. Therefore, the spring contact portion 3 and the center conductor 43 can be reliably contacted at all the contacts P1 to P3, and the spring contact portion 3 that effectively uses the spring force can be realized.
[0056] 第 1接点 P1を支点(固定点)とした場合は、第 2接点 P2が力点になる。第 2接点 P2 を支点とした場合は、第 3接点 P3が力点になる。ばね接触部 3の仮想径がレセプタク ル 41の中心導体 43の直径より常に小さく設定されているので、第 2接点 P2は支点と しての機能と力点としての機能の両方を担う。 [0056] When the first contact P1 is used as a fulcrum (fixed point), the second contact P2 is a power point. When the second contact point P2 is used as a fulcrum, the third contact point P3 becomes the power point. Since the virtual diameter of the spring contact portion 3 is always set to be smaller than the diameter of the central conductor 43 of the receptacle 41, the second contact P2 serves both as a fulcrum and as a force point.
[0057] 従って、 L1 >L2>L3かつ L1≤Rの条件を維持すれば、ばね接触部 3の仮想径が [0057] Therefore, if the conditions of L1> L2> L3 and L1≤R are maintained, the virtual diameter of the spring contact portion 3 is reduced.
Ο. 42mmより小さくなつた場合でも、曲部 Rl, R2が均等に塑性変形を起こすため 、一度嵌合したばね接触部 3は仮想径 φ θ. 42mmの状態に移行し、その後は常に 三つの接点 P1〜P3の接触を最適な状態で維持でき、接点 P1〜P3のうちいずれか の接点がオープンとなることはない。 曲. Even when the diameter is smaller than 42 mm, the curved parts Rl and R2 are uniformly plastically deformed, so once the spring contact part 3 has been fitted, the virtual diameter φ θ. The contacts P1 to P3 can be maintained in an optimal state, and none of the contacts P1 to P3 will be open.
[0058] なお、図 13 (B)に示すように距離 L1〜L3の関係が L1 <L2<L3である場合や、 図 13 (C)に示すように距離 L1〜L3の関係が L1 >L2、かつ、 L2<L3である場合に は、第 2接点 P2や第 3接点 P3が形成されないので、ばね接触部 3と中心導体 43の 接触状態が不安定になる。 [0058] It should be noted that the relationship between the distances L1 to L3 is L1 <L2 <L3 as shown in FIG. 13 (B), or the relationship between the distances L1 to L3 is L1> L2 as shown in FIG. 13 (C). When L2 <L3, the second contact P2 and the third contact P3 are not formed, and the contact state between the spring contact portion 3 and the center conductor 43 becomes unstable.
[0059] また、同軸コネクタ 1を低背化しても、ソケット 2のばね接触部 3のばね限界は、レセ プタクル 41の中心導体 43が圧入される圧入のストロークに関係なく常に一定となる。 従って、ソケット 2のばね接触部 3は中心導体 43に安定に接触し、同軸コネクタ 1とレ
セプタクル 41との結合状態の機械的及び電気的な信頼性や安定性を十分に確保す ることができる。この結果、機械的及び電気的に安定した状態でレセプタクルに結合 でき、かつ、背が低い同軸コネクタが得られる。 [0059] Even if the height of the coaxial connector 1 is reduced, the spring limit of the spring contact portion 3 of the socket 2 is always constant regardless of the press-fitting stroke in which the central conductor 43 of the receptacle 41 is press-fitted. Therefore, the spring contact portion 3 of the socket 2 is in stable contact with the center conductor 43 and is connected to the coaxial connector 1 and the lever. The mechanical and electrical reliability and stability of the coupling state with the receptacle 41 can be sufficiently ensured. As a result, a coaxial connector that can be coupled to the receptacle in a mechanically and electrically stable state and that is short is obtained.
[0060] また、本実施例では、ソケット 2のばね接触部 3とレセプタクル 41の中心導体 43との 接点 Pが 3個の例を説明した力 必ずしも 3個に限定されるものではない。ソケット 2の ばね接触部 3とレセプタクル 41の中心導体 43との接点数が n (n≥3)のときには、 36 0° Znの等間隔で接点 Pを配置すれば、接点 Pの抗カを中心導体 43の中心に向か わせることができ、本実施例と同様の効果を奏することができる。 In this embodiment, the force described in the example in which the number of the contacts P between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 is three is not necessarily limited to three. When the number of contacts between the spring contact part 3 of the socket 2 and the central conductor 43 of the receptacle 41 is n (n≥3), if the contacts P are arranged at equal intervals of 36 0 ° Zn, the anti-contact of the contact P is centered. It can be directed to the center of the conductor 43, and the same effect as in the present embodiment can be obtained.
[0061] 例えば、図 14に示すように、ソケット 2のばね接触部 3とレセプタクル 41の中心導体 43との接点数力 個のときには、 90° の等間隔で接点 P1〜P4を配置すれば、接点 P1〜P4の抗カを中心導体 43の中心に向かわせることができる。図 14 (A)はレセプ タクル 41の中心導体 43と嵌合する前のばね接触部 3の形状 (最適形状)を示す図で あり、図 14 (B)は嵌合した後のばね接触部 3の形状を示す図である。 [0061] For example, as shown in FIG. 14, when the contact force between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 is several, if the contacts P1 to P4 are arranged at equal intervals of 90 °, The resistance of the contacts P1 to P4 can be directed to the center of the central conductor 43. Fig. 14 (A) shows the shape (optimum shape) of the spring contact portion 3 before mating with the central conductor 43 of the receptacle 41, and Fig. 14 (B) shows the spring contact portion 3 after mating. FIG.
[0062] また、図 15に示すように、ソケット 2のばね接触部 3とレセプタクル 41の中心導体 43 との接点数が 5個のときには、 72° の等間隔で接点 P1〜P5を配置すれば、接点 P1 〜P5の抗カを中心導体 43の中心に向かわせることができる。図 15 (A)はレセプタク ル 41の中心導体 43と嵌合する前のばね接触部 3の形状 (最適形状)を示す図であり 、図 15 (B)は嵌合した後のばね接触部 3の形状を示す図である。 Further, as shown in FIG. 15, when the number of contacts between the spring contact portion 3 of the socket 2 and the central conductor 43 of the receptacle 41 is 5, if the contacts P1 to P5 are arranged at equal intervals of 72 °, The resistance of the contacts P1 to P5 can be directed to the center of the center conductor 43. Fig. 15 (A) shows the shape (optimum shape) of the spring contact portion 3 before mating with the center conductor 43 of the receptacle 41, and Fig. 15 (B) shows the spring contact portion 3 after mating. FIG.
[0063] さらに、レセプタクル 41の円筒型中心導体 43の直径を常に同じ寸法と仮定すれば 、接点の数を増やすにつれて、ばね接触部 3と中心導体 43を嵌合させたときの最外 径の寸法が小さくなる。従って、レセプタクル 41の外部導体 42の直径を小さくでき、 実装面積の小さい面実装同軸コネクタ 1が実現できる。 [0063] Further, if the diameter of the cylindrical central conductor 43 of the receptacle 41 is always assumed to be the same dimension, the outermost diameter when the spring contact portion 3 and the central conductor 43 are fitted is increased as the number of contacts is increased. Dimensions are reduced. Therefore, the diameter of the outer conductor 42 of the receptacle 41 can be reduced, and the surface mount coaxial connector 1 having a small mounting area can be realized.
[0064] 次に、本発明に係る通信装置として携帯電話を例にして説明する。図 16は携帯電 話の高周波回路 120を示し、該高周波回路 120は、アンテナ素子 122を備えるととも に、デュプレクサ 123、接続器 125、送信側アイソレータ 131、送信側増幅器 132、 送信側段間用バンドパスフィルタ 133、送信側ミキサ 134、受信側増幅器 135、受信 側段間バンドパスフィルタ 136、受信側ミキサ 137、電圧制御発振器 (VCO) 138及 びローカル用バンドパスフィルタ 139によって構成されている。
[0065] ここに、接続器 125として、前記同軸コネクタ 1及びレセプタクル 41を使用すること 力 Sできる。同軸ケーブル 26の中心導体 26cはアンテナ素子 122に接続され、レセプ タクル 41の中心導体 43はデュプレクサ 123に接続される。なお、この接続関係は逆 であってもよい。また、同軸コネクタ 1及びレセプタクル 41は、携帯電話に内蔵されて いる複数の基板間を接続するための接続器として使用することもできる。 Next, a mobile phone will be described as an example of the communication device according to the present invention. FIG. 16 shows a high-frequency circuit 120 for a mobile phone. The high-frequency circuit 120 includes an antenna element 122, a duplexer 123, a connector 125, a transmission-side isolator 131, a transmission-side amplifier 132, and a transmission-side interstage circuit. The band-pass filter 133, the transmission-side mixer 134, the reception-side amplifier 135, the reception-side interstage band-pass filter 136, the reception-side mixer 137, the voltage-controlled oscillator (VCO) 138, and the local band-pass filter 139. Here, the force S can be used by using the coaxial connector 1 and the receptacle 41 as the connector 125. The central conductor 26 c of the coaxial cable 26 is connected to the antenna element 122, and the central conductor 43 of the receptacle 41 is connected to the duplexer 123. This connection relationship may be reversed. The coaxial connector 1 and the receptacle 41 can also be used as a connector for connecting a plurality of substrates built in the mobile phone.
[0066] なお、本発明に係る同軸コネクタ及び通信装置は、前記実施例に限定されるもの ではなぐその要旨の範囲内で種々に変更することができる。 It should be noted that the coaxial connector and the communication device according to the present invention can be variously modified within the scope of the gist that is not limited to the above-described embodiments.
産業上の利用可能性 Industrial applicability
[0067] 以上のように、本発明は、携帯通信機器の構成部品等に使用される同軸コネクタに 有用であり、特に、機械的及び電気的に安定した状態でレセプタクルに結合でき、か つ、低背化が可能である点で優れている。
[0067] As described above, the present invention is useful for a coaxial connector used for a component of a portable communication device and the like, and particularly, can be coupled to a receptacle in a mechanically and electrically stable state, It is excellent in that a low profile can be achieved.
Claims
[1] 中心導体と外導体を有した同軸ケーブルと、 [1] a coaxial cable having a center conductor and an outer conductor;
レセプタクルの外部導体に接触する筒状部を有し、前記同軸ケーブルの外導体に 電気的に接続するハウジングと、 A housing having a cylindrical portion in contact with the outer conductor of the receptacle and electrically connected to the outer conductor of the coaxial cable;
前記レセプタクルの中心導体が圧入されて径方向外方に拡がり、該中心導体の外 周面に圧接するばね接触部と、該ばね接触部力 一体に引き出されかつ該ばね接 触部の中心軸方向に対して略直交する方向に折曲された、前記同軸ケーブルの中 心導体に接続される接続部とを有したソケットと、 The center conductor of the receptacle is press-fitted and expands outward in the radial direction, and a spring contact portion that presses against the outer peripheral surface of the center conductor, and the force of the spring contact portion is pulled out integrally and the center direction of the spring contact portion A socket having a connection portion that is bent in a direction substantially orthogonal to the coaxial cable and connected to the central conductor of the coaxial cable;
前記ソケットを収容する収容孔を有し、前記ハウジングの筒状部内に装着されるブ ッシングとを備え、 A bushing for housing the socket, and a bushing mounted in a cylindrical portion of the housing;
前記ハウジングの筒状部の下部に、該筒状部の下端力 前記レセプタクルの中心 導体の圧入方向に対して略平行な方向に縦切り込みを設け、かつ、該縦切り込みか ら前記レセプタクルの中心導体の圧入方向に対して略垂直な方向に横切り込みを設 けたこと、 A lower end force of the cylindrical portion is provided at a lower portion of the cylindrical portion of the housing, and a vertical cut is provided in a direction substantially parallel to a press-fitting direction of the central conductor of the receptacle, and the central conductor of the receptacle is formed from the vertical cut. A transverse cut was made in a direction substantially perpendicular to the press-in direction of
を特徴とする同軸コネクタ。 Coaxial connector characterized by
[2] 前記筒状部の上部に前記同軸ケーブルの挿入部が設けられており、該揷入部の 下側に前記縦切込みが設けられ、前記横切り込みが該縦切り込みを基準にして左右 対称に設けられていることを特徴とする請求の範囲第 1項に記載の同軸コネクタ。 [2] The coaxial cable insertion portion is provided at an upper portion of the tubular portion, the vertical cut is provided below the insertion portion, and the horizontal cut is symmetrical with respect to the vertical cut. The coaxial connector according to claim 1, wherein the coaxial connector is provided.
[3] 前記筒状部の下部に、該筒状部の下端力 前記レセプタクルの中心導体の圧入 方向に対して略平行な方向に縦スリットを設けたことを特徴とする請求の範囲第 1項 又は第 2項に記載の同軸コネクタ。 [3] The lower end force of the cylindrical portion is provided with a vertical slit in a direction substantially parallel to the press-fitting direction of the central conductor of the receptacle at the lower portion of the cylindrical portion. Or the coaxial connector according to item 2.
[4] 前記ソケットのばね接触部は、横断面が略 C字形状を有し、前記レセプタクルの中 心導体の外周面に周方向にぉ 、て n個の接点を有するように n— 1の曲部を有して ヽ ることを特徴とする請求の範囲第 1項ないし第 3項のいずれかに記載の同軸コネクタ [4] The spring contact portion of the socket has a substantially C-shaped cross section, and has n-1 contacts so that it has n contacts in the circumferential direction on the outer peripheral surface of the core conductor of the receptacle. The coaxial connector according to any one of claims 1 to 3, wherein the coaxial connector has a curved portion.
[5] 前記ソケットのばね接触部と前記レセプタクルの中心導体力 略 120° の間隔で配 置された第 1接点、第 2接点及び第 3接点を有し、かつ、ばね接触部は二つの曲部を 有して 、ることを特徴とする請求の範囲第 4項に記載の同軸コネクタ。
[5] The spring contact portion of the socket and the central conductor force of the receptacle have a first contact, a second contact, and a third contact arranged at an interval of about 120 °, and the spring contact portion has two bends. 5. The coaxial connector according to claim 4, further comprising a portion.
[6] 前記ソケットのばね接触部は、前記レセプタクルの中心導体が圧入される前の状態 において、レセプタクルの中心導体の中心力 支点である第 1接点までの距離 L1と、 レセプタクルの中心導体の中心から第 2接点までの距離 L2と、レセプタクルの中心 導体の中心力 第 3接点までの距離 L3との関係力 L1 >L2>L3であり、レセプタク ルの中心導体の半径を Rとしたときに L1≤Rであることを特徴とする請求の範囲第 5 項に記載の同軸コネクタ。 [6] The spring contact portion of the socket includes a distance L1 to the first contact that is a central force fulcrum of the central conductor of the receptacle and a center of the central conductor of the receptacle in a state before the central conductor of the receptacle is press-fitted. L2 from the contact point to the second contact and the central force of the center conductor of the receptacle Relationship force with the distance L3 to the third contact L1> L2> L3, and L1 when the radius of the center conductor of the receptacle is R The coaxial connector according to claim 5, wherein ≤R.
[7] 前記ソケットと前記同軸ケーブルの中心導体とが接続される接続部と、前記ハウジ ングの蓋部との間に、厚さ 0. 15mm以下の絶縁シートを配置したことを特徴とする請 求の範囲第 1項な 、し第 6項の 、ずれかに記載の同軸コネクタ。 [7] An insulating sheet having a thickness of 0.15 mm or less is disposed between a connection portion to which the socket and a central conductor of the coaxial cable are connected and a lid portion of the housing. The coaxial connector according to any one of the first, second and sixth terms.
[8] 請求の範囲第 1項ないし第 7項のいずれかに記載の同軸コネクタを備えたことを特 徴とする通信装置。
[8] A communication device comprising the coaxial connector according to any one of claims 1 to 7.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-042492 | 2005-02-18 | ||
JP2005042492 | 2005-02-18 |
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WO2006087953A1 true WO2006087953A1 (en) | 2006-08-24 |
Family
ID=36916361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/302151 WO2006087953A1 (en) | 2005-02-18 | 2006-02-08 | Coaxial connector and communication device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008146521A1 (en) | 2007-06-01 | 2008-12-04 | Murata Manufacturing Co., Ltd. | Coaxial connector |
JP2009151985A (en) * | 2007-12-19 | 2009-07-09 | Nippon Antenna Co Ltd | L-shape coaxial plug |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58148883U (en) * | 1982-03-31 | 1983-10-06 | 富士通株式会社 | contact |
JPH0335676U (en) * | 1989-08-15 | 1991-04-08 | ||
JPH11307158A (en) * | 1998-04-24 | 1999-11-05 | Murata Mfg Co Ltd | Coaxial connector |
-
2006
- 2006-02-08 WO PCT/JP2006/302151 patent/WO2006087953A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58148883U (en) * | 1982-03-31 | 1983-10-06 | 富士通株式会社 | contact |
JPH0335676U (en) * | 1989-08-15 | 1991-04-08 | ||
JPH11307158A (en) * | 1998-04-24 | 1999-11-05 | Murata Mfg Co Ltd | Coaxial connector |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008146521A1 (en) | 2007-06-01 | 2008-12-04 | Murata Manufacturing Co., Ltd. | Coaxial connector |
EP2154758A1 (en) * | 2007-06-01 | 2010-02-17 | Murata Manufacturing Co. Ltd. | Coaxial connector |
US7758377B2 (en) | 2007-06-01 | 2010-07-20 | Murata Manufacturing Co., Ltd. | Coaxial connector |
JPWO2008146521A1 (en) * | 2007-06-01 | 2010-08-19 | 株式会社村田製作所 | Coaxial connector |
JP4770983B2 (en) * | 2007-06-01 | 2011-09-14 | 株式会社村田製作所 | Coaxial connector |
EP2154758A4 (en) * | 2007-06-01 | 2013-02-06 | Murata Manufacturing Co | Coaxial connector |
JP2009151985A (en) * | 2007-12-19 | 2009-07-09 | Nippon Antenna Co Ltd | L-shape coaxial plug |
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