Coaxial connector

Abstract

To provide a coaxial connector having a simple structure that can hold a terminal accommodated in a terminal accommodating portion at a regular position while restricting the rotation of the terminal.SOLUTION: A coaxial connector includes a housing and a retainer 50 attached to the housing. In the housing is provided a terminal accommodating portion into which a terminal is inserted from the rear side thereof. The terminal includes a crimped portion that is crimped to have a polygonal outer periphery in a cross section, and a flange portion that is located in front of the crimped portion in a state where the terminal is inserted into the terminal accommodating portion and formed to protrude outward in a direction to an outer periphery beyond the crimped portion. The retainer 50 includes an engagement portion 53A that is engaged with the outer periphery including at least one corner of the crimped portion of the terminal in a state where the terminal is accommodated at a normal position in the terminal accommodating portion and the retainer 50 is attached at a locking position, an abutment portion 50A that abuts against the flange portion of the terminal from the rear side, and a recess portion 53B between the engagement portion 53A and the abutment portion 50A such that the engagement portion 53A is set back toward an outer peripheral side of the terminal.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The technology disclosed in this specification relates to coaxial connectors.

Background Art

[0002] As an example of a coaxial connector, Patent Document 1 below discloses an external housing (housing) in which a terminal housing chamber (terminal housing portion) for housing a jack (terminal) connected to the end of a coaxial cable is formed, and a retainer attached to the external housing for locking (preventing removal) the jack in the terminal housing chamber. The jack has a ring band (flange portion) protruding in the outer peripheral direction of the external contact, the external housing includes a housing lance for preventing the ring band of the terminal housed inside the terminal housing chamber from coming off, the retainer is formed to be insertable into a locking hole (retainer insertion hole) formed in the external housing, and has a locking claw piece (contact portion) for preventing the ring band from coming off.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, in coaxial connectors used in parts where external forces are applied to the cable during use, such as vehicle doors, the terminals housed within the housing may rotate, causing friction and wear between the terminal contacts. To mitigate this, stoppers (anti-rotation devices) were sometimes fitted to the housing to restrict the rotation of the terminals. In coaxial connectors where stoppers are fitted in addition to retainers to prevent the terminals from coming loose and to hold them in the correct position, the number of components and assembly steps increase. Furthermore, there is a concern that the strength may decrease due to the formation of multiple insertion holes in the housing, and the design flexibility of the connector is also reduced.

[0005] The technology disclosed herein was developed based on the above circumstances and aims to provide a simple coaxial connector capable of holding terminals housed in a terminal housing in a correct position while restricting their rotation. [Means for solving the problem]

[0006] The coaxial connector disclosed herein comprises a housing having a terminal housing portion inside into which a terminal connected to a coaxial cable is inserted from the rear, and a retainer mounted on the housing, wherein the terminal has a crimping portion formed by crimping such that the outer circumference of its cross-section is polygonal, and a flange portion that is located on the front side of the crimping portion in the insertion direction of the terminal when the terminal is inserted into the terminal housing portion, and is formed to protrude outward from the crimping portion, and the housing has a terminal insertion method A retainer insertion hole is formed in the wall of the terminal housing portion in a direction intersecting the direction, and the retainer has a fitting portion that is fitted to the outer circumference of the terminal including at least one corner of the crimping portion when the terminal is housed in the regular position of the terminal housing portion and the retainer is inserted through the retainer insertion hole and mounted in the locking position, a contact portion that abuts against the flange portion of the terminal from the rear, and a recess between the fitting portion and the contact portion that causes the fitting portion to retract toward the outer circumference of the terminal. [Effects of the Invention]

[0007] According to this disclosure, a simple coaxial connector can be provided that can hold terminals housed in a terminal housing in a correct position while restricting their rotation. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing the external appearance of a connector structure in which a coaxial connector according to an embodiment is mated with a mating coaxial connector. [Figure 2] Figure 2 is an exploded view of the connector structure shown in Figure 1. [Figure 3] Figure 3 is a partially cutaway side view of a coaxial connector with the retainer mounted in the locked position. [Figure 4] Figure 4 is a perspective view showing the appearance of one example of terminals housed in a coaxial connector. [Figure 5] Figure 5 is a perspective view showing the appearance of another example of terminals housed in a coaxial connector. [Figure 6] Figure 6 is a perspective view of the retainer. [Figure 7] Figure 7 shows the front view (front and rear) of the retainer. [Figure 8] Figure 8 is a cross-sectional view taken along line A-A' in Figure 7. [Figure 9A] and [Figure 9B] Figures 9A and 9B are schematic diagrams illustrating how a terminal in a partially inserted position is pushed into its proper position by the retainer. [Figure 10] Figure 10 is a cross-sectional view taken along line B-B' in Figure 9B. [Figure 11] Figure 11 is a magnified view of a portion of Figure 3. [Modes for carrying out the invention]

[0009] [Description of Embodiments in this Disclosure] First, embodiments of this disclosure are listed and described.

[0010] (1) The coaxial connector according to the present disclosure comprises a housing having a terminal housing portion inside into which a terminal connected to a coaxial cable is inserted from the rear, and a retainer mounted on the housing, wherein the terminal has a crimping portion formed by crimping such that the outer circumference of its cross-section is polygonal, and a flange portion that is located on the front side of the crimping portion in the insertion direction of the terminal when the terminal is inserted into the terminal housing portion, and is formed to protrude outward from the crimping portion, and the housing has a portion that intersects with the insertion direction of the terminal A retainer insertion hole is formed in the direction that penetrates the wall of the terminal housing portion, and the retainer is a coaxial connector having a fitting portion that is fitted to the outer circumference of the terminal including at least one corner of the crimping portion when the terminal is housed in the regular position of the terminal housing portion and the retainer is inserted from the retainer insertion hole and mounted in the locked position, a contact portion that abuts against the flange portion of the terminal from the rear, and a recess between the fitting portion and the contact portion that causes the fitting portion to retract toward the outer circumference of the terminal.

[0011] According to the configuration of (1) above, the fitting portion functions as an anti-rotation portion to restrict the rotation of the terminal, and the contact portion functions as an anti-loosening portion to prevent the terminal from coming loose to the rear. Since the retainer has both a fitting portion and an anti-rotation portion, the terminal can be prevented from coming loose and from rotating simply by attaching the retainer. Here, in a terminal in which a crimped portion is formed by crimping the rear side of the flange portion of the terminal fitting fitted around the coaxial cable, an incomplete crimped portion with a larger diameter than the crimped portion is formed between the flange portion and the crimped portion. In this regard, the above configuration provides a recess between the contact portion and the fitting portion of the retainer, and the recess functions as a relief portion for the incomplete crimped portion, so that the fitting portion can be fitted to the outer circumference of the crimped portion without interference from the incomplete crimped portion. As a result, with a simple configuration, it is possible to hold the terminal in the correct position of the terminal housing portion while restricting rotation in a coaxial connector.

[0012] (2) In the coaxial connector according to the present disclosure, it is preferable that the retainer has an inclined portion at the end of the retainer on the insertion side of the contact portion that is inclined backward as it moves toward the insertion direction. When the retainer is inserted through the retainer insertion hole in a state where the terminal is at a half-insertion position behind the normal position within the terminal housing portion, first, the end portion on the insertion side of the contact portion abuts against the flange portion that protrudes in the radial direction. According to the configuration of (2) above, an inclined portion that inclines backward is provided at this end portion. When the retainer is further pushed in, the flange portion is pressed forward by the inclined portion, and the terminal moves to the normal position. Thus, by simply inserting the retainer and pushing it to the locking position, the terminal at the half-insertion position can be moved to the normal position and accommodated.

[0013] (3) In the coaxial connector according to the present disclosure, it is preferable that the retainer has a symmetrical structure with respect to the center plane in the front-rear direction when attached to the housing. According to the configuration of (3) above, the mounting operation can be performed without considering the front and rear of the retainer, and the work efficiency is improved. In addition, since it can be applied to both male and female coaxial connectors that respectively accommodate male and female terminals connected in a face-to-face manner, the parts can be shared, and parts management becomes easy.

[0014] [Details of Embodiments of the Present Disclosure] Hereinafter, embodiments of the present disclosure will be described. The present invention is not limited to these examples, and is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0015] <Embodiment> Embodiments will be described while referring to FIGS. 1 to 11. In the present disclosure, for the coaxial connector on the side facing the mating coaxial connector, that is, for the coaxial connector shown in FIG. 3, the left side in FIG. 3 is defined as the front (the opposite side is the rear). In the following description, for convenience, the upper side in FIG. 3 is defined as the top (the opposite side is the bottom), but the coaxial connector and the connector structure can be used in any orientation. The retainer will be described based on its orientation when attached to the housing. Also, the direction in which the retainer is inserted into the housing (the direction from top to bottom) may be referred to as the insertion direction. In some parts of each drawing except FIGS. 4 and 5, the X-axis, Y-axis, and Z-axis of the orthogonal coordinate system XYZ are shown, and they are drawn so that the directions of each axis are the same in each figure. The Z-axis direction represents the vertical direction, the Y-axis direction represents the front-rear direction, and the X-axis direction represents the left-right direction. Note that for a plurality of identical members, one member may be labeled with a reference numeral and the reference numerals of other members may be omitted.

[0016] (Connector structure) FIGS. 1 and 2 show a connector structure 100 including a coaxial connector 1 according to the present embodiment. The connector structure 100 is formed by fitting together a male coaxial connector 1 that houses a male terminal T100 connected to the terminal of a coaxial cable C1, and a female coaxial connector 2 that houses a female terminal T200 connected to the terminal of a coaxial cable C2. As shown in FIG. 2, the male coaxial connector 1 includes a male housing 10 having a cylindrical hood portion 13 that protrudes forward, and a retainer 50 attached to the housing 10. The female coaxial connector 2 includes a female housing 20 having a fitting cylinder portion into which the hood portion 13 is inserted at the front, and a retainer 50 attached to the housing 20. Although not shown in the figure, the connector structure 100 further includes a male frame that holds the male coaxial connector 1 and a female frame that holds the female coaxial connector 2, and the two coaxial connectors 1 and 2 can be maintained in a mated state by a locking structure provided on the male frame and the female frame.

[0017] As shown in Figure 2, in the connector structure 100, the retainer 50 attached to the male housing 10 and the retainer 50 attached to the female housing 20 have the same structure, allowing for the commonality of parts. The following will mainly describe the male coaxial connector 1.

[0018] (housing) Figure 3 is a partially cutaway side view of the coaxial connector 1. As shown in Figures 2 and 3, the housing 10 of the coaxial connector 1 has a shape in which a substantially cylindrical hood portion 13 protrudes forward from the front of a substantially rectangular parallelepiped male body portion 11. The housing 10 can be made of, for example, an integrally molded insulating synthetic resin. As shown in Figure 3, a terminal housing portion 15 is formed inside the housing 10, which penetrates the male body portion 11 and the hood portion 13 in the front-to-back direction. The terminal T100 connected to the end of the coaxial cable C1 is inserted from the rear and housed in this terminal housing portion 15.

[0019] As shown in Figure 3, etc., a lance 17 is formed on the lower surface of the male main body 11 in a cantilever shape with its front end as a free end, and is capable of bending and deforming in the vertical direction, so as to protrude into the interior of the terminal housing 15 in its natural state. In addition, a retainer insertion hole 19 is formed on the upper surface of the male main body 11, penetrating the upper wall of the terminal housing 15. To the side of the retainer insertion hole 19 in the male main body 11, a pair of retainer locking holes 18 are formed, penetrating the left and right walls of the terminal housing 15 (see Figure 10).

[0020] (Coaxial cable) For coaxial cables C1 and C2, for example, a coaxial cable can be used that comprises an inner conductor, a dielectric material arranged around the outer circumference of the inner conductor, an outer conductor consisting of braided wire or the like arranged around the outer circumference of the dielectric, and an insulator covering the outer circumference of the outer conductor. A coaxial terminal connected to a terminated coaxial cable is configured, for example, to include a center contact connected to the inner conductor, an insulator holding the center contact, an outer contact holding the insulator, and a metal sleeve crimped to the outer conductor.

[0021] (Terminals) Figure 4 shows the male terminal T100 housed in coaxial connector 1, and Figure 5 shows the female terminal T200 housed in coaxial connector 2. Each terminal T100 and T200 has a crimping portion T111 and T211 that are crimped to the coaxial cables C1 and C2 at the base end, a cylindrical tip portion T121 and T221 that are connected to the mating terminal at the tip end, and a flange portion T131 and T231 that are located in front of the crimping portions T111 and T211 and protrude outward. Between the flange portions T131 and T231 and the tip portions T121 and T221, there are front flange portions T132 and T232 that protrude to have approximately the same outer diameter as the flange portions T131 and T231.

[0022] The tip T221 of the female terminal T200 is formed to fit almost tightly to the outer circumference of the tip T121 of the male terminal T100. When the coaxial connector 1, which houses the male terminal T100 in its normal position, and the coaxial connector 2, which houses the female terminal T200 in its normal position, are coupled together, the tip T121 of the male terminal T100 is inserted into the tip T221 of the female terminal T200, and for example, the center contacts held inside the tips T121 and T221 come into contact with each other, thereby electrically connecting both terminals T100 and T200.

[0023] The crimping portions T111 and T211 are crimped to the coaxial cables C1 and C2 after the terminal fittings are fitted onto the outer circumference of the terminated coaxial cables C1 and C2, by crimping the rear sides of the flange portions T131 and T231 so that the outer circumference of the cross-section forms a polygon. In this embodiment, an example is given of the case where the cross-section is crimped to form a hexagon. In this embodiment, the crimping portion T111 of the male terminal T100 and the crimping portion T211 of the female terminal T200 have the same outer shape.

[0024] As described above, when crimping the crimped portions T111 and T211, it is difficult to crimp the terminals right up to the boundary with the flange portions T131 and T231. For this reason, as shown in Figures 4 and 5, in both terminals T100 and T200, incomplete crimped portions T141 and T241 are formed between the flange portions T131 and T231 and the crimped portions T111 and T211, which are smaller in diameter than the flange portions T131 and T231 but larger in diameter than the crimped portions T111 and T211.

[0025] (Retainer) Figures 6 to 8 show retainers 50 that are fitted into a male housing 10 and a female housing 20. The white arrows in Figures 6 to 8 indicate the insertion direction of the retainer 50. As shown in Figure 6, the retainer 50 has a main body 51, a pair of bifurcated legs 53 that protrude from the main body 51 in the insertion direction of the retainer 50, i.e., downward, a pair of flexible arms 55 formed in a cantilever shape with their lower ends as free ends on the left and right sides of the main body 51, and a pair of waist portions 57 that protrude from the main body 51 to the left and right below the lower ends of the arms 55. On the arms 55, locking claws 55A that protrude in the left and right directions are formed at the lower ends, which are the free ends. As shown in Figure 7, the upper surface of the locking claws 55A is a substantially horizontal plane, and the lower surface is an inclined surface that widens outward toward upward.

[0026] As shown in Figure 8, the main body 51, leg portion 53, and waist portion 57 are formed so that their front surfaces are substantially flush. This front surface is the contact portion 50A, and as will be described later, when the retainer 50 is mounted in the locking position, it contacts the rear surface of the flange portion T131 of the terminal T100 housed in the correct position (see Figure 9B).

[0027] As shown in Figures 6 and 7, a fitting portion 53A is formed on the lower surface of the retainer 50, located on the insertion side between the pair of legs 53, with a shape that fits almost tightly onto the outer circumference of the crimping portion T111, including at least one corner. Furthermore, as shown in Figures 6 and 8, the front side of the fitting portion 53A is cut out so as to recede toward the outer circumference of the terminal T100 when the fitting portion 53A is crimped onto the outer circumference of the crimping portion T111, thereby forming a recess 53B. The dimensions of the recess 53B in the front-rear direction are formed to be approximately equal to or slightly larger than the dimension from the rear surface of the flange portion T131 to the front end of the crimping portion T111. The depth dimension of the recess 53B is greater than the height dimension from the outer circumference of the crimping portion T111 to the outer circumference of the incomplete crimping portion T141, and approximately equal to or less than the height dimension to the outer circumference of the flange portion T131. Furthermore, as shown in Figures 6 and 8, the front surface of the protruding end of the leg portion 53, that is, the end on the insertion side of the contact portion 50A, has an inclined portion 53C that slopes backward as it goes downward. Furthermore, the retainer 50 has a symmetrical structure with respect to the front-to-back central plane P shown in Figure 8. That is, the rear surface of the retainer 50 has the same shape as the front surface shown in Figure 7.

[0028] (Retainer insertion) Next, the process by which the retainer 50 is attached to the locking position of the housing 10 will be explained with reference to Figures 9A to 11. Figure 9A shows the state when the retainer 50 is inserted through the retainer insertion hole 19 while the terminal T100, which is inserted into the terminal housing 15 from the rear, is in a half-inserted position and has not reached its full position. In this state, the lance 17 on the lower surface of the housing 10 is in contact with the flange T131 and is bent downward. As shown by the white arrows in Figure 9A, the retainer 50 is inserted downward from the leg portion 53, with the front contact portion 50A aligned with the front opening edge of the retainer insertion hole 19. When the protruding end of the leg portion 53 enters the interior of the terminal housing 15, the inclined portion 53C formed on the front surface of the protruding end of the leg portion 53 first comes into contact with the rear corner of the flange T131 of the terminal T100, which is in the half-inserted position. If the retainer 50 is pushed in further, as the retainer 50 moves downward, the flange portion T131 is pressed forward by the inclined portion 53C, as shown by the black arrow in Figure 9A, and the terminal T100 moves to its correct position.

[0029] As shown in Figure 9B, when the retainer 50 is pushed in and locked into place, the flange T131 moves forward of the front end of the lance 17, the biasing force of the lance 17 is released, and it recovers and deforms to be positioned behind the flange T131, thereby restricting the rearward movement of the flange T131 and, consequently, the terminal T100. At the same time, the contact portion 50A on the front of the retainer 50 comes into contact with the rear surface of the flange T131, so the contact portion 50A functions as a retaining portion, doubly restricting the rearward movement of the terminal T100.

[0030] As shown in Figure 10, the locking position is when the waist portion 57 of the retainer 50 is pushed in until it contacts the lower opening edge of the retainer locking hole 18. When the retainer 50 is pushed in to the locking position, the arm portion 55, which has passed through the retainer insertion hole 19 while bending and deforming in the direction of the central axis, recovers its deformation, and the upper surface of the locking claw 55A contacts the upper opening edge of the retainer locking hole 18. This prevents the retainer 50 from coming out upward and locks it into the housing 10.

[0031] Figure 11 is a magnified view of the vicinity of the retainer 50 mounted in the locking position shown in Figure 3. As shown in Figures 10 and 11, when the retainer 50 is mounted in the locking position, the fitting portion 53A formed on the lower surface between the pair of legs 53 is fitted almost tightly to the outer circumference of the crimping portion T111 of the terminal T100. By fitting the fitting portion 53A to the outer circumference including at least one corner of the crimping portion T111, the fitting portion 53A functions as a stopper, restricting the rotation of the terminal T100 when an external force is applied to the coaxial cable C1.

[0032] At this time, as shown in Figure 11, in the retainer 50, a recess 53B is positioned opposite the incomplete crimp portion T141 formed between the flange portion T131 and the crimp portion T111 of the terminal T100. The recess 53B functions as a relief portion for the incomplete crimp portion T141, so that the incomplete crimp portion T141 and the fitting portion 53A do not interfere with each other, and the retainer 50 can be pushed in and installed to the locking position.

[0033] (Effects of the embodiment) Next, the effects of this embodiment will be described. The coaxial connector 1 of this embodiment comprises a housing 10 having a terminal housing 15 inside into which a terminal T100 connected to a coaxial cable C1 is inserted from the rear, and a retainer 50 mounted on the housing 10. The terminal T100 has a crimped portion T111 that is crimped to form a polygon on its outer circumference, and a flange portion T131 that is located in front of the crimped portion T111 when the terminal T100 is inserted into the terminal housing 15 and is formed to protrude outward from the crimped portion T111. The housing 10 has terminals in a direction intersecting the insertion direction of the terminal T100. A retainer insertion hole 19 is formed through the wall of the housing portion 15, and the retainer 50 is a coaxial connector 1 having a fitting portion 53A that fits onto the outer circumference of the crimping portion T111 of the terminal T100, including at least one corner, when the terminal T100 is housed in the regular position of the terminal housing portion 15 and the retainer 50 is inserted through the retainer insertion hole 19 and mounted in the locked position, a contact portion 50A that abuts against the flange portion T131 of the terminal T100 from the rear, and a recess 53B between the fitting portion 53A and the contact portion 50A, which causes the fitting portion 53A to retract toward the outer circumference of the terminal T100.

[0034] In the coaxial connector 1 of this embodiment, the fitting portion 53A functions as an anti-rotation portion to restrict the rotation of the terminal T100, and the contact portion 50A functions as an anti-dislodgement portion to prevent the terminal T100 from coming loose to the rear. Since the retainer 50 has both the fitting portion 53A and the contact portion 50A, the terminal T100 can be prevented from coming loose and from rotating simply by attaching the retainer 50. Here, in a terminal in which a crimped portion T111 is formed by crimping the rear side of the flange portion T131 of the terminal fitting fitted around the coaxial cable C1, in order to prevent wire breakage at the crimped portion T111, crimping is performed while gradually reducing the compressive stress of the coaxial cable C1 toward the boundary portion with the flange portion T131. As a result, an incomplete crimped portion T141 (so-called bell mouth) with a larger diameter than the crimped portion T111 is formed between the flange portion T131 and the crimped portion T111. In this regard, in the above configuration, a recess 53B is provided between the contact portion 50A and the fitting portion 53A of the retainer 50, and the recess 53B functions as a relief portion for the incomplete crimp portion T141, so that the fitting portion 53A can be fitted onto the outer circumference of the crimp portion T111 without interference from the incomplete crimp portion T141. As a result, a simple coaxial connector 1 can be provided that can hold the terminal T100 in the correct position of the terminal housing portion 15 while restricting rotation.

[0035] In the coaxial connector 1 of this embodiment, the retainer 50 has a pair of bifurcated legs 53 that protrude in the direction of insertion into the housing 10 of the retainer 50, a contact portion 50A is formed on the front surface of the legs 53, a fitting portion 53A is formed on the insertion-direction side between the pair of legs 53, and a recess 53B is formed by cutting out the front side of the fitting portion 53A so as to recede toward the outer circumference of the terminal T100.

[0036] Furthermore, in the coaxial connector 1 of this embodiment, the retainer 50 has an inclined portion 53C at the end of the retainer 50 on the insertion side of the contact portion 50A that slopes backward as it moves toward the insertion direction. When the retainer 50 is inserted through the retainer insertion hole 19 with terminal T100 in a half-inserted position behind its normal position, the insertion end of the contact portion 50A first contacts the radially protruding flange portion T131. According to the coaxial connector 1 of this embodiment, a rearward-sloping inclined portion 53C is provided at this end, so when the retainer 50 is pushed further in, the flange portion T131 is pressed forward by the inclined portion 53C, and terminal T100 moves to its normal position in the forward direction. In this way, simply by inserting the retainer 50 and pushing it to the locking position, terminal T100, which was in the half-inserted position, can be moved to the normal position and accommodated.

[0037] Furthermore, in the coaxial connector 1 of this embodiment, the retainer 50 has a symmetrical structure with respect to the front-to-back central plane P when it is attached to the housing 10. With this type of coaxial connector 1, installation can be performed without considering the front and back of the retainer 50, improving work efficiency. Furthermore, since it can be applied to both male and female coaxial connectors 1 and 2 that house male terminals T100 and female terminals T200 that are connected opposite each other, parts can be standardized, making parts management easier.

[0038] <Other Embodiments> This disclosure is not limited to the embodiments described above and in the drawings, and the following embodiments, for example, are also included in the technical scope of the technology disclosed herein.

[0039] (1) In the above embodiment, the coaxial connector is described as housing one terminal, but it is not limited to this. In a coaxial connector in which one retainer is attached to a housing that houses multiple terminals, the retainer can be provided with multiple contact portions (anti-loosening portions), fitting portions (anti-rotation portions), and recesses (relief portions) to prevent the multiple terminals from coming loose and from rotating.

[0040] (2) The housings described in the above embodiments are merely examples, and they may be formed in shapes different from those described above. The coaxial connector is not limited to forming a connector structure that includes male and female connectors. [Explanation of Symbols]

[0041] 1, 2… Coaxial connector 10… Housing 11...Male main body 13…Food Department 15…Terminal housing section 17... Lance 18…Retainer locking hole 19…Retainer insertion hole 20… Housing 50…Retainer 50A…Contact part 51...Main body 53...legs 53A…Fitting part 53B…recess 53C…Slope part 55...Arm 55A... Locking claw 57...lower back 100… Connector structure C1, C2… Coaxial Cable T100, T200… terminals T111, T211... Crimping section T121, T221... Tip section T131,T231…Trim part T132, T232... Front flange T141, T241... Incomplete crimped section P... (retainer) center plane in the front-to-back direction

Claims

1. A housing having a terminal housing section inside into which a terminal connected to a coaxial cable is inserted from the rear, The housing is fitted by being inserted downwards, and the retainer is provided, The aforementioned terminal is, A crimped portion formed by crimping so that the outer circumference of the cross-section forms a polygon, The terminal has a flange portion that is located on the front side of the crimping portion in the insertion direction of the terminal when the terminal is inserted into the terminal housing portion, and is formed to protrude outward from the crimping portion. The housing is provided with a retainer insertion hole that penetrates the upper wall of the terminal housing in a direction intersecting the insertion direction of the terminal, and a pair of retainer locking holes that penetrate the left and right walls of the terminal housing. The retainer comprises a main body, a pair of legs that protrude downward from the center of the main body in a bifurcated manner, a pair of flexible arms formed in a cantilever shape with their lower ends being free ends on the left and right sides of the main body, and a pair of waist portions that protrude to the left and right from the main body below the lower ends of the arms. The lower ends of the pair of arms are formed with a pair of locking claws that protrude outward in the left-right direction. The main body, the legs, and the waist are formed so that their front surfaces are flush, and this front surface is the contact surface. A fitting portion is formed on the lower surface between the pair of legs, and a recess is formed on the front side of the fitting portion. With the terminal housed in the correct position in the terminal housing and the retainer inserted through the retainer insertion hole and mounted in the locking position, The fitting portion is fitted onto the outer circumference of the terminal, including at least one corner of the crimping portion. The aforementioned contact portion contacts the flange portion of the terminal from the rear. The recess is a portion between the fitting portion and the contact portion, where the fitting portion is extended toward the outer circumference of the terminal. A coaxial connector in which the upper surface of the locking claw abuts against the upper opening edge of the retainer locking hole, and the waist portion abuts against the lower opening edge of the retainer locking hole.

2. The coaxial connector according to claim 1, wherein the retainer has an inclined portion at the end of the retainer on the insertion side of the contact portion that slopes backward as it approaches the insertion direction.

3. The coaxial connector according to claim 1 or 2, wherein the retainer has a front-to-back symmetrical structure with respect to the front-to-back central plane when attached to the housing.

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