High frequency connector and high frequency connector with cable

Abstract

To provide a high frequency connector and a high frequency connector with a cable, improved in electrical connection reliability.SOLUTION: An inner terminal 6 is connected to a core wire 51 of a coaxial cable 5. A sleeve 9 is covered with a braided wire 54. An inner housing 7 accommodates the inner terminal 6. An outer terminal 8 covers an outer periphery of the inner housing 7. The outer terminal 8 has a braided wire crimping piece 82 crimped to the braided wire 54 on the sleeve 9. A punching groove 93 is provided on an outer peripheral surface of the sleeve 9. The punching projection 823, which is accommodated in the punching groove 93 and engages with the punching groove 93 in an axial direction of the coaxial cable 5, is provided on an inner peripheral surface of the braided wire crimping piece 82.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a high-frequency connector and a high-frequency connector with a cable. [Background technology]

[0002] High-frequency connectors that are connected to the terminals of shielded electric wires (cables) have been proposed, as described in Patent Documents 1 and 2. In Patent Documents 1 and 2, a sleeve is provided that is wrapped with the braided wire of the cable, and the braided wire is crimped from above the sleeve with a braided wire crimping piece of the terminal.

[0003] However, because the braided wire crimping piece and the sleeve have smooth surfaces, the cable is held in place solely by the fastening force generated when the cable is crimped. If a pulling force is applied to the cable that causes the cable and the high-frequency connector to move apart, the fastening force generated by the crimping alone will not be enough to hold the cable in place, resulting in a decrease in the reliability of the electrical connection. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-69366 [Patent Document 2] Japanese Patent Application Laid-Open No. 2003-317882 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-frequency connector and a high-frequency connector with a cable that are designed to improve the reliability of electrical connection. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the high-frequency connector according to the present invention has the following features. an inner terminal connected to a core wire of a cable in which an inner insulator covering the core wire is covered with a braided wire; a cylindrical sleeve covered with the braided wire; an inner housing that accommodates the inner terminal; an outer terminal covering the outer periphery of the inner housing, the outer terminal has a braided wire crimping piece that is crimped to the braided wire on the sleeve, A high frequency connector, a recess is provided on one of an outer circumferential surface of the sleeve and an inner circumferential surface of the braided wire crimping piece, a protrusion that is accommodated in the recess and engages with the recess in the axial direction of the cable is provided on the other of the outer peripheral surface of the sleeve and the inner peripheral surface of the braided wire crimping piece; It is a high frequency connector.

[0007] In order to achieve the above-mentioned object, the high-frequency connector with cable according to the present invention has the following features. The core wire and an inner insulator covering the core wire; a braided wire covering the inner insulation; an outer insulation covering the braided wire; an inner terminal connected to the core wire; a cylindrical sleeve covered with the braided wire; an inner housing that accommodates the inner terminal; an outer terminal covering the outer periphery of the inner housing; a high frequency connector having the outer terminal has a braided wire crimping piece that is crimped to the braided wire on the sleeve, A high-frequency connector with a cable, a recess is provided on one of an outer circumferential surface of the sleeve and an inner circumferential surface of the braided wire crimping piece, a protrusion that is accommodated in the recess and engages with the recess in the axial direction of the cable is provided on the other of the outer peripheral surface of the sleeve and the inner peripheral surface of the braided wire crimping piece; It is a high frequency connector with a cable. [Effects of the Invention]

[0008] The high-frequency connector and the high-frequency connector with cable according to the present invention have the effect of improving the reliability of electrical connection.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an exploded perspective view of a high-frequency connector according to the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the cable assembly shown in FIG. [Figure 3] FIG. 3 is a perspective view of the outer terminal shown in FIG. [Figure 4] FIG. 4 is a partial cross-sectional view of the cable assembly shown in FIG. [Figure 5] FIG. 5 is an explanatory diagram for explaining the manufacturing procedure of the high-frequency connector. [Figure 6] FIG. 6 is an explanatory diagram for explaining the manufacturing procedure of the high-frequency connector. [Figure 7] FIG. 7 is an explanatory diagram for explaining the manufacturing procedure of the high-frequency connector. [Figure 8] FIG. 8 is a perspective view of an outer terminal according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0012] For convenience of explanation, the following definitions are used to refer to "front," "rear," "left," "right," "upper," and "lower" as shown in Figures 1 to 8. The "front-rear direction," "left-right direction," and "up-down direction" are perpendicular to one another. The "front-rear direction" corresponds to the "axial direction" of the present invention.

[0013] As shown in FIG. 1, a high-frequency connector 1 is attached to the end of a coaxial cable 5 (cable). The high-frequency connector 1 and the coaxial cable 5 form a cable-attached high-frequency connector. The high-frequency connector 1 includes an outer housing 2, a spacer 3, and a cable assembly 4. The outer housing 2 is a resin housing that houses the cable assembly 4, which will be described later. The spacer 3 is provided so that it can be attached to the outer housing 2 from below. The spacer 3 is provided so that it can be locked to the outer housing 2 at a temporary locking position and a full locking position. At the temporary locking position, the spacer 3 allows the cable assembly 4 to be inserted into the outer housing 2. At the full locking position, the spacer 3 locks to the cable assembly 4, preventing it from slipping out of the outer housing 2.

[0014] As shown in Figure 2, the cable assembly 4 has an inner terminal 6 attached to the end of the coaxial cable 5, a resin inner housing 7 that accommodates the inner terminal 6, a metal outer terminal 8 that accommodates the inner housing 7, and a sleeve 9.

[0015] The coaxial cable 5 has a core wire 51, an insulator 52 (internal insulator) covering the core wire 51, a foil 53 covering the insulator 52, a braided wire 54 covering the outer periphery of the insulator 52 and the foil 53, and a sheath 55 (external insulator) covering the outer periphery of the braided wire 54.

[0016] The inner terminal 6 has a terminal connection portion 61 and a core wire crimping piece 62. The terminal connection portion 61 is connected to a terminal of a mating connector. The core wire crimping piece 62 is provided behind the terminal connection portion 61 and is crimped to the core wire 51 of the coaxial cable 5.

[0017] In this embodiment, the inner housing 7 is provided in a substantially cylindrical shape, and accommodates the inner terminal 6 inside the cylinder.

[0018] The outer terminal 8 has an accommodating portion 81 that accommodates the inner housing 7, a braided wire crimping piece 82 that crimps the braided wire 54 of the coaxial cable 5, and a sheath crimping piece 83 that crimps the sheath 55 of the coaxial cable 5. In this embodiment, the accommodating portion 81 is cylindrical, and the inner housing 7 is accommodated within the cylinder. The braided wire crimping piece 82 is located rearward of the accommodating portion 81. The sheath crimping piece 83 is located rearward of the braided wire crimping piece 82.

[0019] 3, before being crimped, braided wire crimping piece 82 has a bottom plate 821 and a pair of standing plates 822, 822 standing on both the left and right sides of bottom plate 821. By crimping so that the upper ends of the pair of standing plates 822, 822 approach each other, the braided wire 54 becomes cylindrical after being crimped. The inner peripheral surface of braided wire crimping piece 82 is provided with a plurality of punched protrusions 823 (convex portions) punched inward.

[0020] In this embodiment, three punched protrusions 823 are provided at intervals along a direction around an axis that is the front-to-rear direction. Of the three punched protrusions 823, one is provided on the bottom plate 821, and one is provided on each of the pair of upright plates 822, 822. As shown in Fig. 4, the punched protrusion 823 has an inclined surface S1 that approaches the core wire 51 toward the front side (the tip side of the coaxial cable 5). Note that the braided wire 54 has been omitted from Fig. 4 to simplify the drawing.

[0021] After the braided wire 54 is crimped onto the sleeve 9, the braided wire 54 is folded back to cover the sleeve 9. The braided wire crimping pieces 82 of the outer terminal 8 described above are crimped onto the braided wire 54 on the sleeve 9. The sleeve 9 is formed by stamping a metal plate. As shown in FIG. 2 , before crimping, the sleeve 9 has a bottom plate 91 and a pair of standing plates 92, 92 standing on both the left and right sides of the bottom plate 91. By crimping the pair of standing plates 92, 92 so that their upper ends approach each other, the sleeve 9 becomes cylindrical after the braided wire 54 is crimped.

[0022] The outer peripheral surface of the sleeve 9 is provided with a punched groove 93 (recess) punched inward. As shown in Fig. 4, the punched protrusion 823 of the outer terminal 8 is housed in the punched groove 93 of the sleeve 9, and the punched protrusion 823 and the punched groove 93 are engaged in the front-rear direction. The punched groove 93 is elongated in the direction around the axis of the front-rear direction. In this embodiment, the punched groove 93 is provided from the bottom plate 91 to the pair of upright plates 92, 92.

[0023] Next, a manufacturing procedure for the high-frequency connector 1 having the above-described configuration will be described with reference to Figures 5 to 7. As shown in Figure 5(A), the coaxial cable 5 is cut to a predetermined length. Next, as shown in Figure 5(B), the sheath 55 at the terminal is stripped to expose the braided wire 54. At this time, a portion of the tip of the braided wire 54 is cut.

[0024] Thereafter, as shown in Fig. 5(C), sleeve 9 is crimped from above exposed braided wire 54. At this time, the rear side of exposed braided wire 54 is crimped by sleeve 9, and the front side is not crimped. Next, as shown in Fig. 5(D), the front side of braided wire 54 that is not crimped is spread out and folded back toward the rear side, and then covered with sleeve 9.

[0025] Next, as shown in Fig. 5(E), the foil 53 and the insulator 52 are stripped from the tip of the coaxial cable 5 to expose the core wire 51. Next, as shown in Fig. 6(A), the core wire crimping piece 62 of the inner terminal 6 is crimped to the exposed core wire 51. Next, as shown in Fig. 6(B), the inner terminal 6 is housed in the inner housing 7.

[0026] Next, the outer terminal 8 and the cable assembly 4 are brought relatively close to each other in the front-to-rear direction, and the inner housing 7 is housed in the housing portion 81 of the outer terminal 8, as shown in Fig. 6(C). At this time, the inclined surface S1 of the punching protrusion 823 comes into contact with the inner housing 7 and the cable assembly 4, causing the braided wire crimping piece 82 to bend smoothly outward. When the braided wire 54 reaches above the braided wire crimping piece 82 and the sheath 55 reaches above the sheath crimping piece 83, and the punching protrusion 823 is housed in the punching groove 93 as shown in Fig. 4, the braided wire crimping piece 82 returns to its original state, and the punching groove 93 and the punching protrusion 823 are locked in the front-to-rear direction.

[0027] Braided wire 54 is provided between braided wire crimping piece 82 and sleeve 9, and punching protrusion 823 protrudes through the mesh of braided wire 54 and is housed in punching groove 93. Next, as shown in Figure 6(D), braided wire 54 is crimped from above sleeve 9 with braided wire crimping piece 82, and sheath 55 is crimped with sheath crimping piece 83.

[0028] Next, as shown in Fig. 7(A), the outer terminal 8 is housed in the outer housing 2 with the spacer 3 provisionally locked. Next, as shown in Fig. 7(B), the spacer 3 is permanently locked to complete the assembly.

[0029] According to the embodiment described above, punched protrusion 823 provided on braided wire crimping piece 82 and punched groove 93 provided on sleeve 9 are engaged in the front-to-rear direction. This allows coaxial cable 5 to be held even if a pulling force that moves coaxial cable 5 and high-frequency connector 1 relatively apart is applied to coaxial cable 5, improving the reliability of the electrical connection.

[0030] According to the embodiment described above, punching protrusion 823 is provided with inclined surface S1 that approaches core wire 51 toward the front. This allows punching protrusion 823 provided on braided wire crimping piece 82 to be smoothly housed in punching groove 93 provided in sleeve 9.

[0031] According to the embodiment described above, punched groove 93 is provided long and axially around the front-to-rear direction, and multiple punched protrusions 823 are provided at intervals around the axis. This ensures uniform engagement in the axial direction, further improving electrical reliability. In addition, punched protrusions 823 on braided wire crimping piece 82 can be smoothly received in punched groove 93 on sleeve 9.

[0032] Furthermore, by providing the punched grooves 93 in the sleeve 9, stress is dispersed by the step between the outer periphery of the sleeve 9 and the punched grooves 93, and the sleeve 9 is less likely to deform (open) after crimping.

[0033] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0034] In the first embodiment, the punched protrusions 823 provided on the outer terminal 8 are arranged in a row along the axial direction, but this is not limited to this. As shown in Fig. 8, the punched protrusions 823B provided on the outer terminal 8B may be elongated along the axial direction. In this case, the engagement between the punched protrusions 823B and the punched grooves 93 increases, further improving electrical reliability.

[0035] In the above-described embodiment, punched protrusions 823 are provided on the inner peripheral surface of braided wire crimping piece 82, and punched grooves 93 are provided on the outer peripheral surface of sleeve 9, but this is not limited to this. A recess may be provided on the inner peripheral surface of braided wire crimping piece 82, and a protrusion may be provided on the outer peripheral surface of sleeve 9, and they may be engaged with each other.

[0036] According to the above-described embodiment, after the braided wire 54 is crimped with the sleeve 9, the front side of the braided wire 54 is folded back to cover the sleeve 9 with the braided wire 54, but this is not limited to this. As in Patent Document 2, the braided wire 54 may be spread out and the sleeve 9 inserted between the insulator 52 and the braided wire 54, so that the sleeve 9 is covered with the braided wire 54.

[0037] Here, the features of the embodiments of the high-frequency connector and the high-frequency connector with cable according to the present invention described above will be briefly summarized and listed below in [1] to [5].

[0038] [1] an inner terminal (6) connected to a core wire (51) of a cable (5) in which an inner insulator (52) covering the core wire (51) has an outer periphery covered with a braided wire (54); a cylindrical sleeve (9) covered with the braided wire (54); an inner housing (7) that accommodates the inner terminal (6); and an outer terminal (8) covering the outer periphery of the inner housing (7), The outer terminal (8) has a braided wire crimping piece (82) that is crimped to the braided wire (54) on the sleeve (9). A high frequency connector (1), A recess (93) is provided on one of the outer circumferential surface of the sleeve (9) and the inner circumferential surface of the braided wire crimping piece (82), a protrusion (823, 823B) that is accommodated in the recess (93) and engages with the recess in the axial direction of the cable (5) is provided on the other of the outer peripheral surface of the sleeve (9) and the inner peripheral surface of the braided wire crimping piece (82); High frequency connector (1).

[0039] According to the high-frequency connector (1) having the configuration [1] above, even if a pulling force is applied to the cable (5) such that the cable (5) and the high-frequency connector (1) move relatively apart, the cable (5) can be held, improving the reliability of the electrical connection.

[0040] [2] In the high-frequency connector (1) described in [1], The convex portions (823, 823B) are provided with inclined surfaces (S1) that approach the core wire (51) toward the tip of the cable (5). High frequency connector (1).

[0041] According to the high-frequency connector (1) having the configuration [2] above, the convex portions (823, 823B) can be smoothly accommodated in the concave portions (93).

[0042] [3] In the high-frequency connector (1) according to [1] or [2], The recess (93) is provided in an elongated shape along the axial direction of the cable, The convex portion (823) is provided in a plurality of positions spaced apart from one another along the axial direction of the cable. High frequency connector (1).

[0043] According to the high-frequency connector (1) having the configuration [3] above, the connector is locked uniformly around the axis, further improving electrical reliability. Also, the protrusion (823) can be smoothly accommodated in the recess (93).

[0044] [4] In the high-frequency connector (1) according to [1] or [2], The recess (93) and the protrusion (823B) are provided in an elongated shape along the axial direction of the cable (5). High frequency connector (1).

[0045] According to the high frequency connector (1) having the configuration [4] above, the engagement between the convex portion (823B) and the concave portion (93) is increased, so that the electrical reliability is further improved.

[0046] [5] A core wire (51), an inner insulator (52) covering the core wire (51); a braided wire (54) covering the inner insulation (52); a cable (5) having an outer insulation (55) covering the braided wire (54); an inner terminal (6) connected to the core wire (51); a cylindrical sleeve (9) covered with the braided wire (54); an inner housing (7) that accommodates the inner terminal (6); an outer terminal (8) covering the outer periphery of the inner housing (7); A high-frequency connector (1) having The outer terminal (8) has a braided wire crimping piece (82) that is crimped to the braided wire (54) on the sleeve (9). A high-frequency connector with a cable, A recess (93) is provided on one of the outer circumferential surface of the sleeve (9) and the inner circumferential surface of the braided wire crimping piece (82), a protrusion (823, 823B) that is accommodated in the recess (93) and engages with the recess (93) in the axial direction of the cable (5) is provided on the other of the outer peripheral surface of the sleeve (9) and the inner peripheral surface of the braided wire crimping piece (82); High frequency connector with cable.

[0047] According to the high-frequency connector with cable having the configuration [5] above, even if a pulling force is applied to the cable (5) such that the cable (5) and the high-frequency connector (1) move relatively apart, the cable (5) can be held, improving the reliability of the electrical connection. [Explanation of symbols]

[0048] 1 High Frequency Connector 5 Coaxial cable (cable) 6 Inner terminal 7 Inner housing 8 outer terminal 9 Sleeve 51 Core Wire 52 Insulator (internal insulator) 54 Braided wire 82 Braided wire clamping piece 93 punched groove (recess) 823,823B punched protrusion (convex part)

Claims

1. an inner terminal connected to a core wire of a cable in which an inner insulator covering the core wire is covered with a braided wire; a cylindrical sleeve covered with the braided wire; an inner housing that accommodates the inner terminal; an outer terminal covering the outer periphery of the inner housing, the outer terminal has a braided wire crimping piece that is crimped to the braided wire on the sleeve, A high frequency connector, a recess is provided on one of an outer circumferential surface of the sleeve and an inner circumferential surface of the braided wire crimping piece, a protrusion that is accommodated in the recess and engages with the recess in the axial direction of the cable is provided on the other of the outer peripheral surface of the sleeve and the inner peripheral surface of the braided wire crimping piece; High frequency connector.

2. 2. The high-frequency connector according to claim 1, The convex portion has an inclined surface that approaches the core wire toward the tip of the cable. High frequency connector.

3. 3. The high-frequency connector according to claim 1, The recess is provided in an elongated shape along a direction around the axis of the cable, The protrusions are provided in a plurality at intervals along the axial direction of the cable. High frequency connector.

4. 3. The high-frequency connector according to claim 1, The recess and the protrusion are provided in an elongated shape along the axial direction of the cable. High frequency connector.

5. The core wire and an inner insulator covering the core wire; a braided wire covering the inner insulation; an outer insulation covering the braided wire; an inner terminal connected to the core wire; a cylindrical sleeve covered with the braided wire; an inner housing that accommodates the inner terminal; an outer terminal covering the outer periphery of the inner housing; a high frequency connector having the outer terminal has a braided wire crimping piece that is crimped to the braided wire on the sleeve, A high-frequency connector with a cable, a recess is provided on one of an outer circumferential surface of the sleeve and an inner circumferential surface of the braided wire crimping piece, a protrusion that is accommodated in the recess and engages with the recess in the axial direction of the cable is provided on the other of the outer peripheral surface of the sleeve and the inner peripheral surface of the braided wire crimping piece; High frequency connector with cable.

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