Coaxial Connectors

Abstract

To provide a coaxial connector that can be miniaturized.SOLUTION: A coaxial plug 10 includes a contact 1 with a three-point contact, a housing 3 having a disk portion 31 and a rectangular portion 32, and a shell 5 having a cylindrical portion 51 containing the disk portion 31 and an extending portion 52 containing the rectangular portion 32. The contact 1 includes a pair of fixed terminals 11s and a movable terminal 12s which stand upright from the tip side of a top plate 11t. The disk portion 31 includes a housing chamber 31r in which the pair of fixed terminals 11s and the movable terminal 12s are formed. The pair of fixed terminals 11s are located at a pair of vertices of an imaginary equilateral triangle inscribed in the mating contact, and the movable terminal 12s is located at the other apex of the imaginary equilateral triangle, and is arranged in a state of facing toward the intermediate portion of the fixed terminals 11s.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a coaxial connector. In particular, it relates to a structure of a small coaxial connector attached to the terminal of a coaxial cable, which includes a shell that is electrically connected to the outer conductor of the coaxial cable on one end side and has a cylindrical shape on the other end side.

Background Art

[0002] By connecting a coaxial connector fixed to the terminal of a coaxial cable to a receptacle mounted on a printed circuit board, a high-frequency signal can be transmitted from the coaxial cable to the printed circuit board. Or, a high-frequency signal can be transmitted from the printed circuit board to the coaxial cable.

[0003] Generally, a coaxial cable is composed of a circular central conductor, a dielectric surrounding the central conductor, an outer conductor such as a braided wire surrounding the dielectric, and an insulating sheath covering and protecting the outer conductor.

[0004] For example, a coaxial connector according to the prior art includes a metal shell serving as an external contact. Also, the coaxial connector includes a housing and a bellows-shaped contact. The shell fixes the insulating sheath of the coaxial cable by crimping on one end side thereof. Also, the shell is electrically connected to the outer conductor of the coaxial cable on one end side thereof. Also, the shell has a cylindrical shape on the other end side.

[0005] The housing electrically insulates the shell and the contact. The contact is arranged inside the housing in a state of being surrounded annularly by the external contact. The contact is connected to the central conductor of the coaxial cable. And the central conductor and the contact are electrically connected.

[0006] However, in the coaxial connector according to the prior art, the center conductor of the coaxial cable was electrically connected to the contact by rotating a pair of crimping pieces toward the contact mounting surface on which the center conductor of the coaxial cable was placed. Therefore, there was a possibility that the center conductor would protrude slightly from the butting surface of the pair of crimping pieces.

[0007] Due to the above problems in the coaxial connector according to the prior art, a coaxial connector that surely prevents the center conductor from protruding from the butting surface of the pair of crimping pieces has been disclosed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] FIG. 12 is a perspective view showing the configuration of a coaxial connector according to the prior art, and is a state diagram before connecting a coaxial cable. FIG. 13 is a longitudinal sectional view showing the configuration of a coaxial connector according to the prior art, and is a state diagram before connecting a coaxial cable. Note that FIGS. 12 and 13 of the present application correspond to FIGS. 3 and 4 of Patent Document 1.

[0010] Referring to FIG. 12 or FIG. 13, a coaxial connector (hereinafter referred to as a coaxial plug) 9 according to the prior art is attached to the terminal of a coaxial cable (not shown). The coaxial plug 9 includes a bellows-shaped contact 91, a front-round and rear-square housing 92, and a metal shell 93 serving as an external contact.

[0011] 12 or 13, contact 91 can electrically connect a mating contact (not shown) and a coaxial cable. Housing 92 has a pair of bendable crimping pieces 92a and 92b. Shell 93 has a pair of first barrels 931, a pair of second barrels 932, and a pair of third barrels 933.

[0012] 12 or 13, the contact 91 is molded integrally with the housing 92 using synthetic resin. The contact 91 has a strip-shaped top plate 91t and a pair of contact pieces 91s. The base end of the top plate 91t forms an installation surface 911 exposed on the surface of the housing 92. The top plate 91t has a pair of contact pieces 91s on the tip end. A cylindrical mating contact can be inserted between the pair of contact pieces 91s. The pair of contact pieces 91s can be electrically connected to the mating contact.

[0013] Referring to Figures 12 and 13, by placing the central conductor of a coaxial cable on an installation surface 911 and crimping a pair of first barrels 931, the central conductor of the coaxial cable and contact 91 can be electrically connected with a pair of crimping pieces 92a, 92b interposed between the central conductor of the coaxial cable and shell 93.

[0014] 12 or 13, the housing 92 has a disk portion 921 and a square portion 922. A portion of the square portion 922 protrudes outward from the disk portion 921. The disk portion 921 has a cylindrical fitting portion 92s protruding in the thickness direction z of the housing 92. A pair of crimping pieces 92a and 92b are rotatably connected to the square portion 922.

[0015] 12 or 13, the fitting portion 92s has a contact accommodating chamber 92h in the center. The contact accommodating chamber 92h has a substantially rectangular opening on one side of the fitting portion 92s so that the contact 91 can be freely introduced therein. A pair of contact pieces 91s are disposed inside the contact accommodating chamber 92h.

[0016] Referring to FIG. 12 or FIG. 13, the fitting portion 92s can be inserted into the inside of a cylindrical shell (not shown) formed on the mating coaxial connector. By inserting the fitting portion 92s into the inside of the cylindrical shell, the cylindrical mating contact disposed at the center of the cylindrical shell and the pair of contact pieces 91s·91s can be electrically connected.

[0017] Referring to FIG. 12 or FIG. 13, the fitting portion 92s has a contact housing chamber 92h at the center. The contact housing chamber 92h is open in a substantially rectangular shape on one surface of the fitting portion 92s so that a mating contact (not shown) can be introduced therein. And the contact housing chamber 92h has a pair of contact pieces 91s·91s disposed therein.

[0018] Referring to FIG. 12 or FIG. 13, the shell 93 houses the housing 92 therein. The shell 93 covers the housing 92 and constitutes the outer shell of the coaxial plug 9.

[0019] Referring to FIG. 12 or FIG. 13, the shell 93 has a pair of first barrels 931·931, a pair of second barrels 932·932, and a pair of third barrels 933·933 disposed along the longitudinal direction x of the shell 93.

[0020] Referring to FIG. 12 or FIG. 13, the terminals of the coaxial cable after terminal processing are introduced from the outer peripheral direction to the bottom surfaces of the pair of second barrels 932·932 and the pair of third barrels 933·933, and by crimping the pair of second barrels 932·932, the outer conductor of the coaxial cable and the shell 93 can be electrically connected. Also, by crimping the pair of third barrels 933·933, the insulating sheath of the coaxial cable can be crimped. Thereby, the coaxial plug 9 can be fixed to the terminal of the coaxial cable.

[0021] Referring to FIG. 13 again, in the coaxial plug 9, the distance between the contact 91 (top plate 91t) and the bottom surface of the shell 93 is different between the tip end side and the base end side of the contact 91. A large difference is formed between the distance d1 between the tip end side of the contact 91 and the bottom surface of the shell 93 and the distance d2 between the base end side of the contact 91 and the bottom surface of the shell 93. On the tip end side of the contact 91, the wall thickness of the housing 92 is thin, and on the base end side of the contact 91, the wall thickness of the housing 92 is thick. That is, the relationship is d1 < d2.

[0022] Referring to FIG. 12 or FIG. 13, the contact 91 is configured such that a pair of contact pieces 91s·91s are displaced in the width direction y of the contact 91. Due to this, the outer diameter of the fitting portion 92s is increased. That is, in the two-point contact structure of the contact according to the prior art shown in FIG. 12 or FIG. 13, there is a problem that it is not easy to miniaturize the coaxial connector.

[0023] There is a demand for a coaxial connector that can be miniaturized by changing the structure of the contact provided in the coaxial connector and that can contribute to the miniaturization of an electronic device using the coaxial connector. And the above can be said to be the problems of the present invention.

[0024] The present invention has been made in view of such problems, and an object thereof is to provide a coaxial connector that can be miniaturized.

Means for Solving the Problems

[0025] The inventor of the present invention is a contact for a coaxial connector that can be connected to a cylindrical mating contact. By externally connecting to the mating contact by three-point contact and configuring the contact with a pair of fixed terminals located at a set of vertices of a virtual equilateral triangle and a movable terminal located at the other vertex of the virtual equilateral triangle and elastically displaceable toward the middle part of the pair of fixed terminals, it is considered that it is possible to miniaturize compared to a coaxial connector using a contact by two-point contact. Based on this, the inventor has invented the following new coaxial connector.

[0026] (1) The coaxial connector according to the present invention is a coaxial connector for connecting the terminal of a coaxial cable having a central conductor, a dielectric surrounding the central conductor, an outer conductor covering the dielectric, and an insulating sheath covering the outer conductor, and is a contact that can be connected to a cylindrical mating contact, and is circumscribed to the mating contact by three-point contact, and has a pair of fixed terminals standing up from the tip side of a strip-shaped top plate and a movable terminal that can be elastically deformed, and a disk portion having an accommodation chamber with one surface opened so that the mating contact can be introduced therein and having the pair of fixed terminals and the movable terminal disposed therein, and a front-round-and-rear-square-shaped housing having a square portion with a part protruding in the outer peripheral direction from the disk portion, and a cylindrical portion capable of accommodating the disk portion toward one surface from the same direction as the direction in which the pair of fixed terminals protrude, and a conductive shell having a gutter-shaped extending portion with a part protruding in the outer peripheral direction from the cylindrical portion and capable of accommodating the square portion therein.

[0027] (2) It is preferable that the pair of fixed terminals are located at a set of vertices of a virtual equilateral triangle inscribed in the mating contact, the movable terminal is located at the other vertex of the virtual equilateral triangle, and they are arranged in a state of facing each other toward the middle portion between the pair of fixed terminals.

[0028] (3) It is preferable that the contact is integrally formed with the housing, the contact has an installation surface where the base end portion of the top plate is exposed on the upper surface of the square portion and the central conductor can come into contact, and a contact edge where the ridge portions of the pair of fixed terminals are exposed in the accommodation chamber of the housing and the mating contact can come into contact.

[0029] (4) The coaxial connector according to the present invention further includes a crimp housing having a slot through which the central conductor can be introduced from the outer peripheral direction and can be inserted from the opening side of the accommodation chamber toward the square portion, and it is preferable that the extending portion of the shell includes a pair of first barrels capable of crimping the crimp housing to the square portion and a pair of second barrels capable of crimping the outer conductor.

Advantages of the Invention

[0030] The coaxial connector according to the present invention circumscribes the mating contact by three-point contact, and includes a pair of fixed terminals located at a set of vertices of a virtual equilateral triangle, and a movable terminal located at the other vertex of the virtual equilateral triangle and elastically displaceable toward the middle of the pair of fixed terminals to form a contact. Therefore, the coaxial connector can be miniaturized.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0032] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. [Configuration of Coaxial Connector] First, the configuration of a coaxial connector according to an embodiment of the present invention will be described.

[0033] (Overall Configuration) Referring to FIGS. 1 to 6, a coaxial connector (hereinafter referred to as a coaxial plug) 10 according to an embodiment of the present invention can connect the terminal of a coaxial cable Cb. The coaxial cable Cb has a center conductor Wc, a dielectric Di surrounding the center conductor Wc, an outer conductor Wb such as a braided wire covering the dielectric Di, and an insulating sheath Wi covering the outer conductor Wb.

[0034] Referring to FIGS. 1 to 6, the coaxial plug 10 includes a contact 1 by three-point contact, a housing 3 having a front-round and rear-square shape, and a conductive shell 5. Further, the housing 3 has a rectangular parallelepiped-shaped crimp housing 7. Furthermore, the shell 5 has a pair of first barrels 521·521 and a pair of second barrels 522·522.

[0035] Referring to FIG. 2 or FIG. 4 and FIG. 6 or FIG. 7, the contact 1 can electrically connect the central conductor Wc of the coaxial cable Cb to the cylindrical central contact 2 that serves as the mating contact (see FIG. 1).

[0036] Referring to FIG. 7, the contact 1 has a top plate 11t formed in a strip shape, a pair of fixed terminals 11s·11s, and an elastically deformable movable terminal 12s. The pair of fixed terminals 11s·11s and the movable terminal 12s stand up from the tip end side of the top plate 11t. The central contact 2 can be introduced into the space surrounded by the pair of fixed terminals 11s·11s and the movable terminal 12s (see FIG. 1).

[0037] Referring to FIG. 7, the pair of fixed terminals 11s·11s are arranged to face each other in a direction substantially orthogonal to the direction in which the top plate 11t extends. The movable terminal 12s is arranged to face toward the middle part of the pair of fixed terminals 11s·11s. When the central contact 2 is introduced into the space surrounded by the pair of fixed terminals 11s·11s and the movable terminal 12s, the pair of fixed terminals 11s·11s and the movable terminal 12s can be externally connected to the outer periphery of the central contact 2 by three-point contact.

[0038] Referring to FIGS. 2 to 6, the contact 1 is integrally formed with the housing 3. The contact 1 has an installation surface 321 where the central conductor Wc can come into contact. The base end part of the top plate 11t is exposed on the upper surface of a rectangular part 32 described later on the installation surface 321. By placing the central conductor Wc on the installation surface 321 and pushing down the crimp housing 7 toward the housing 3 (see FIG. 11), the central conductor Wc and the contact 1 can be electrically connected.

[0039] Referring to FIGS. 6 to 8, the housing 3 has a disk part 31 and a rectangular part 32. A part of the rectangular part 32 protrudes in the outer peripheral direction from the disk part 31. The disk part 31 has a housing chamber 31r at the center (see FIG. 2 or FIG. 3).

[0040] 2, 3, and 5, the accommodating chamber 31r has a rectangular opening on one side of the housing 3 so that the center contact 2 can be freely introduced therein. The accommodating chamber 31r accommodates a pair of fixed terminals 11s and 11s and a movable terminal 12s.

[0041] 5, the shell 5 has a cylindrical portion 51 and a gutter-shaped extending portion 52. The cylindrical portion 51 can accommodate the disk portion 31 of the housing 3 toward one surface of the cylindrical portion 51 from the same direction as the direction in which the pair of fixed terminals 11s-11s protrudes.

[0042] 5, the cylindrical portion 51 can have the outer contact 6 inserted therein (see FIG. 1). When the outer contact 6 is inserted relatively inside the cylindrical portion 51, the shell 5 and the outer contact 6 can be electrically connected. Also, the contact 1 and the center contact 2 can be electrically connected.

[0043] 1 to 6, the extension portion 52 extends substantially parallel to and connects part of the outer periphery of the cylindrical portion 51. The rectangular portion 32 of the housing 3 can be accommodated inside the extension portion 52 (see FIG. 2 or 5).

[0044] 1 to 6, the extension portion 52 has a pair of first barrels 521 and a pair of second barrels 522. The pair of first barrels 521 can crimp the crimp housing 7 to the rectangular portion 32. The pair of second barrels 522 can crimp the outer conductor Wb from above the dielectric Di.

[0045] 1 to 6, the pair of second barrels 522·522 crimp the outer conductor Wb from above the dielectric Di, thereby electrically connecting the outer conductor Wb to the shell 5. Also, the coaxial plug 10 can be fixed to the terminal of the coaxial cable Cb.

[0046] Referring to FIGS. 1 to 6, the extending portion 52 has a bottom plate piece 52b that extends from its bottom surface and covers the bottom surface of the cylindrical portion 51. In a state where the disc portion 31 is accommodated in the cylindrical portion 51, the bottom plate piece 52b covers the bottom surface of the disc portion 31. Referring to FIG. 4, the bottom plate piece 52b is inclined downward toward the tip. In other words, the bottom surface of the cylindrical portion 51 is inclined downward toward the side opposite to the square portion 32.

[0047] (Configuration of the mating connector) Next, the configuration of a receptacle (mating connector) 20 to which the coaxial plug 10 according to the embodiment is connected will be described. Referring to FIG. 1, the receptacle 20 according to the embodiment is surface-mounted on a printed circuit board (not shown). The receptacle 20 includes a cylindrical center contact 2 with a closed tip, a housing 4 made of a dielectric, and an annular outer contact 6.

[0048] Referring to FIG. 1, the lead terminal 2r of the center contact 2 can be soldered to the signal pattern of the printed circuit board. The main body portion 61 of the outer contact 6 has an open upper surface. Also, the main body portion 61 internally arranges the main body portion 21 of the center contact 2 coaxially so as to surround the main body portion 21 of the center contact 2. The lead terminal 6r of the outer contact 6 can be soldered to the ground pattern of the printed circuit board.

[0049] Referring to FIG. 1, the housing 4 is formed in a rectangular plate shape. The housing 4 fixes the center contact 2 and the outer contact 6 by integrally molding the center contact 2 and the outer contact 6 with the housing 4. Inside the housing 4, the housing 4 is filled so as to electrically insulate the center contact 2 and the outer contact 6.

[0050] Referring to FIG. 1, when the coaxial plug 10 is connected to the receptacle 20, the center conductor Wc inherent in the coaxial cable Cb can be connected to the center contact 2, and the outer conductor Wb inherent in the coaxial cable Cb can be connected to the outer contact 6. Then, a high-frequency signal can be transmitted from the coaxial cable Cb to the printed circuit board, and a high-frequency signal can be transmitted from the printed circuit board to the coaxial cable Cb.

[0051] (Contact Configuration) Next, the configuration of the contact 1 according to the embodiment will be described. Referring to FIG. 7, the contact 1 is preferably made of a conductive metal plate, and by punching and bending the conductive metal plate, the contact 1 with a desired three-point contact shape can be obtained. The contact 1 is preferably made of a copper alloy, but is not limited to the copper alloy.

[0052] Referring to FIG. 3(A) or FIG. 8(B), the pair of fixed terminals 11s·11s are located at a set of vertices of a virtual equilateral triangle inscribed in the center contact 2. On the other hand, the movable terminal 12s is located at the other vertex of the virtual equilateral triangle. And the movable terminal 12s is arranged in a state of facing toward the middle part of the pair of fixed terminals 11s·11s.

[0053] Referring to FIG. 1 or FIGS. 3(A) and 8(B), when the center contact 2 is inserted into the accommodation chamber 31r of the disk portion 31, the outer periphery of the center contact 2 can contact the ridge portions of the pair of fixed terminals 11s·11s exposed in the accommodation chamber 31r. Also, the outer periphery of the center contact 2 can contact the movable terminal 12s. In this way, the contact 1 can make three-point contact with the center contact 2.

[0054] (Housing Configuration) Next, the configuration of the housing 3 according to the embodiment will be described. Referring to FIGS. 2 to 8, the housing 3 is preferably made of an insulating synthetic resin, and by molding the insulating synthetic resin, the housing 3 with a desired shape can be obtained.

[0055] Referring to FIG. 4, in the coaxial plug 10, the distance between the contact 1 (top plate 11t) and the bottom surface of the shell 5 is substantially the same at the tip end side and the base end side of the contact 1. The bottom surface of the cylindrical portion 51 is inclined downward toward the side opposite to the square portion 32.

[0056] Referring to FIG. 4, the difference between the distance D1 between the tip end side of the contact 1 and the bottom surface of the shell 5 and the distance D2 between the base end side of the contact 1 and the bottom surface of the shell 5 is formed to be small. The wall thickness of the housing 3 is substantially the same at the tip end and the base end sides of the contact 1. That is, they are in the relationship of D1≈D2.

[0057] Referring to FIG. 4, by reducing the difference in the distance between the contact 1 (top plate 11t) and the shell 5, the impedance disturbance can be suppressed. Thereby, the high-frequency band of the high-frequency signal transmitted to the coaxial plug 10 can be increased. For example, the VSWR (voltage standing wave ratio) can be suppressed to less than "1.5" up to 60 GHz.

[0058] (Configuration of the shell) Next, the configuration of the shell 5 according to the embodiment will be described. Referring to FIGS. 1 to 6, the shell 5 is made of a conductive metal plate, and it is preferable to form a conductive developed plate processed into a predetermined outer shape to obtain the shell 5 of a desired shape. It is preferable to form the cylindrical portion 51 and the gutter-shaped extending portion 52 in the shell 5.

[0059] Also, referring to FIG. 5, it is preferable to perform bending forming on the extending portion 52 with a pair of first barrels 521·521 and a pair of second barrels 522·522 opened.

[0060] Referring to FIGS. 1 to 6, the extending portion 52 includes a pair of first barrels 521·521 and a pair of second barrels 522·522. The pair of first barrels 521·521 can crimp the crimp housing to the square portion 32 (see FIGS. 6 and 11(B)).

[0061] Referring to FIGS. 1 to 6, a pair of second barrels 522·522 can crimp the external conductor Wb from above the dielectric Di. Thereby, the external conductor Wb and the shell 5 can be electrically connected. And a pair of second barrels 522·522 can fix the coaxial connector 10 to the terminal of the coaxial cable Cb (see FIG. 1).

[0062] (Configuration of the Crimp Housing) Next, the configuration of the crimp housing 7 according to the embodiment will be described. Referring to FIG. 6, FIG. 9, or FIG. 11, the crimp housing 7 has a U-shaped slot 7s cut out from the bottom surface side. The center conductor Wc can be introduced into the slot 7s from the outer circumferential direction (see FIG. 11). The crimp housing 7 can be inserted from the opening side of the accommodation chamber 31r toward the square portion 32.

[0063] Referring to FIG. 10, the crimp housing 7 is provided with a pair of lances 7r·7r at one end. The pair of lances 7r·7r are arranged across the slot 7s. On the other hand, referring to FIG. 6 or FIG. 7, the housing 3 forms a step 32d in the square portion 32 that can be locked to the lance 7r. When the crimp housing 7 is pushed into the square portion 32, the lance 7r is locked to the step 32d, so that the crimp housing 7 can be held in the square portion 32.

[0064] Referring to FIG. 11(A), with the center conductor Wc placed on the installation surface 321 and the crimp housing 7 held in the square portion 32, by crimping a pair of first barrels 521·521, the bottom of the slot 7s can press the center conductor Wc against the installation surface 321 (see FIG. 11(A)). Thereby, the center conductor Wc can be connected to the contact 1.

[0065] The coaxial plug 10 according to the embodiment uses the crimp housing 7 to crimp a pair of first barrels 521·521, thereby pressing the center conductor Wc against the installation surface 321. And the center conductor Wc is connected to the contact 1.

[0066] [Operation of the Coaxial Connector] Next, the operation and effects of the coaxial connector 10 according to the embodiment will be described.

[0067] Referring to FIGS. 1 to 9, the coaxial plug 10 according to the embodiment circumscribes the center contact 2 by three-point contact, and a pair of fixed terminals 11s·11s located at a set of vertices of a virtual equilateral triangle, and the other vertex of the virtual equilateral triangle, and the contact 1 is constituted by a movable terminal 12s that can be elastically displaced toward the middle part of the pair of fixed terminals 11s·11s. Therefore, the coaxial connector can be miniaturized.

[0068] Referring to FIG. 4, the coaxial plug 10 according to the embodiment can suppress impedance disturbance by reducing the difference in the distance between the contact 1 (top plate 11t) and the shell 5 at the tip and base end sides of the contact 1. Thereby, the high-frequency band of the high-frequency signal transmitted to the coaxial plug 10 can be increased.

[0069] Referring to FIG. 11, after placing the center conductor Wc on the installation surface 321 and holding the crimp housing 7 in the rectangular portion 32, by crimping a pair of first barrels 521·521, the bottom of the slot 7s can press the center conductor Wc against the installation surface 321 (see FIG. 11(A)). Thereby, the center conductor Wc can be connected to the contact 1.

[0070] The present invention can miniaturize the coaxial connector by changing the contact structure of the contact from a two-point contact type to a three-point contact type using a pair of fixed terminals and a movable terminal.

Description of Reference Numerals

[0071] 1 Contact 3 Housing 5 Shell 10 Coaxial plug (coaxial connector) 11s·11s A pair of fixed terminals 11t Top plate 12s Movable terminal 31 Disk portion 31r Accommodation chamber 32 Rectangular portion 51 Cylindrical portion 52 Extension part Cb Coaxial cable Di Dielectric Wb Outer conductor Wc Center conductor Wi Insulation sheath

Claims

1. A coaxial connector for connecting the terminals of a coaxial cable having a central conductor, a dielectric surrounding the central conductor, an outer conductor covering the dielectric, and an insulating sheath covering the outer conductor, a contact that can be connected to a cylindrical mating contact, the contact circumscribing the mating contact by three-point contact, having a pair of fixed terminals standing up from the tip side of a strip-shaped top plate and an elastically deformable movable terminal, and the pair of fixed terminals being bent from the end of the top plate so as to be opposed in a direction orthogonal to the extending direction of the top plate, having a rectangular bar shape with a ridge portion where the mating contact contacts, and the movable terminal being arranged so as to be elastically deformable toward the middle portion between the pair of fixed terminals and facing the middle portion; a disk portion having a housing with a front circular and rear rectangular shape, having an accommodation chamber with one surface opened so that the mating contact can be introduced therein and having a pair of the fixed terminals and the movable terminal arranged inside, and a rectangular portion having a part protruding in the outer peripheral direction from the disk portion; a conductive shell having a cylindrical portion capable of accommodating the disk portion from the same direction as the direction in which the pair of fixed terminals protrude, toward one surface, and a gutter-shaped extending portion having a part protruding in the outer peripheral direction from the cylindrical portion and capable of accommodating the rectangular portion therein. The coaxial connector is provided with these components.

2. The pair of fixed terminals are located at a set of vertices of a virtual equilateral triangle inscribed in the mating contact, The movable terminal is located at the other vertex of the virtual equilateral triangle and is arranged so as to face the middle portion between the pair of fixed terminals. The coaxial connector according to claim 1.

3. The contact is integrally formed with the housing, The contact is a mounting surface where the base end portion of the top plate is exposed on the upper surface of the rectangular portion and the central conductor can come into contact; a contact edge where the ridge portions of the pair of fixed terminals are exposed in the accommodation chamber of the housing and the mating contact can come into contact. The coaxial connector according to claim 1 or 2.

4. The coaxial connector further includes a crimp housing having a notch formed as a slot through which the central conductor can be introduced from the outer peripheral direction and can be inserted from the opening side of the accommodation chamber toward the rectangular portion, The extending portion of the shell includes a pair of first barrels capable of crimping the crimp housing to the rectangular portion, and a pair of second barrels capable of crimping the outer conductor. The coaxial connector according to any one of claims 1 to 3.

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