Multi-coaxial connector

Abstract

To provide a multiple coaxial connector which can easily and surely fix a shell ASSY to a housing.SOLUTION: A shell ASSY includes a shell that has depressions going around the outer periphery thereof and a flange, and is fixed to a housing in the N rows×M columns arrangement. The housing comprises: N×M insertion holes to which tips of the shell ASSY are inserted; engaging parts which are formed at positions close to the insertion holes that are obliquely adjacent to the inner side surface of each of the insertion holes and are engaged with the depressions; and a slit which is formed by notching the housing in the direction orthogonal to the extension direction of the insertion holes and in which a first groove and a second groove are formed on the inner side surface thereof. A retainer comprises: a claw which is engaged with the first groove and the second groove when being inserted to the slit; and N recesses which do not disturb the movement in the insertion holes of the shell and the flange in such a state that the claw is engaged with the first groove and to which the shell ASSY is inserted and in which the side surface contacts the flange in such a state that the claw is engaged with the second groove.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a multiple coaxial connector. [Background technology]

[0002] Patent Document 1 is an example of a conventional connector formed by inserting a plurality of cables into one housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-221797 A Summary of the Invention [Problem to be solved by the invention]

[0004] It is difficult to manually insert multiple shell assemblies, each of which includes a shell, body, contacts, and coaxial cable, into a housing at the same time and fix them in place while maintaining their relative positions.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS An object of the present invention is to provide a multiple coaxial connector in which the shell assembly can be easily and reliably fixed to the housing. [Means for solving the problem]

[0006] The multiple coaxial connector of the present invention includes a shell assembly, a housing, and a retainer.

[0007] The shell assembly is composed of a shell including a recess and a flange surrounding its outer periphery, a body housed in the shell, contacts housed in the body, and a coaxial cable connected to the shell and the contacts.

[0008] The shell ASSY is fixed to the housing and arranged in N rows in a second direction perpendicular to a first direction, which is the extension direction of the shell ASSY, and M columns (where N and M are integers greater than or equal to 2) in a third direction perpendicular to both the first and second directions.

[0009] The housing includes N x M insertion holes through which the respective tips of the shell ASSY are inserted, engagement portions formed on the inner surfaces of the insertion holes in positions adjacent to the diagonally adjacent insertion holes and which engage with the recesses, and slits formed by cutting out the housing in a direction perpendicular to the extension direction of the insertion holes, connected to the insertion holes, and having a first groove and a second groove formed on its inner surface in that order from furthest from the center of the housing.

[0010] The retainer includes a claw that engages with the first groove and the second groove when inserted into the slit, and N recesses through which the shell ASSY is inserted and whose sides abut the flange in a fixed state in which the claw is engaged with the second groove so as not to hinder movement of the shell and flange within the insertion hole. Effect of the Invention

[0011] According to the multiple coaxial connector of the present invention, the shell assembly can be fixed to the housing easily and reliably. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is an exploded perspective view of the multiple coaxial connector according to the first embodiment. [Diagram 2] FIG. 1 is a perspective view of a multiple coaxial connector according to a first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of the shell ASSY of the first embodiment. [Figure 4] FIG. [Diagram 5] 4A and 4B are longitudinal cross-sectional views showing the structure of an engagement portion and an enlarged partial view thereof; [Figure 6] FIG. 4 is a cross-sectional view in the short direction showing the structure of an engagement portion. [Figure 7]FIG. 4 is a perspective view showing a structure of a slit and a retainer formed in a housing. [Figure 8] FIG. 3 is a cross-sectional view in the short direction showing the structure of the retainer. [Figure 9] 1 is a perspective view showing a state in which a retainer of the multiple coaxial connector of the first embodiment is inserted to a temporary fastening position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described in detail. Note that components having the same functions are given the same reference numbers and duplicated explanations will be omitted. EXAMPLES

[0014] The structure of the multiple coaxial connector of the first embodiment will be described below with reference to Figures 1, 2, and 3. As shown in Figures 1 and 2, the multiple coaxial connector of the present embodiment includes a shell assembly 1, a housing 2, and a retainer 3.

[0015] As shown in Figures 1 and 3, the shell ASSY 1 is composed of a shell 11 including a recess 111 and a flange 112 that surrounds its outer periphery, a body 12 housed in the shell 11, a contact 13 housed in the body 12, a coaxial cable 14 connected to the shell 11 and the contact 13, and a shielding member 15 that covers the coaxial cable 14.

[0016] <Shell ASSY1> The shell ASSY1 is arranged in N rows (N is an integer of 2 or more) in a second direction (see the bold "1" and the corresponding arrow in FIG. 1) perpendicular to a first direction (see the bold "1" and the corresponding arrow in FIG. 1) which is the extension direction of the shell ASSY1, and in M ​​columns (M is an integer of 2 or more) in a third direction (see the bold "3" and the corresponding arrow in FIG. 1) perpendicular to both the first and second directions, and is fixed to the housing 2. In this embodiment, N=2, M=2, and the structure includes 2×2=4 shell ASSY1.

[0017] <Housing 2> Hereinafter, a detailed structure of the housing 2 will be described with reference to Figs. 4 to 7. As shown in Fig. 4, the housing 2 includes N x M (2 x 2 in this embodiment) insertion holes 21 through which the respective ends of the shell ASSY1 are inserted. As shown in Figs. 4 and 5, the housing 2 includes an engagement portion 211 (half-lock shape in this embodiment) having a protrusion 2111 that protrudes toward the inside of the housing so as to engage with the recess 111. As shown in Figs. 4 and 6, the engagement portion 211 is provided on the inner side of each of the insertion holes 21 at a position close to the diagonally adjacent insertion hole 21.

[0018] The engaging portion 211 can be realized by, for example, a resin spring. In this embodiment, by pushing the shell 11 into the insertion hole 21, the engaging portion 211 is elastically deformed once toward the outside of the housing. Next, the protruding portion 2111 of the engaging portion 211 falls into the recess 111, and the engaging portion 211 elastically returns to its original position toward the inside of the housing. Simultaneously with or immediately after the elastic return, the abutting surface 22 of the housing 2 A The housing 2 and the shell ASSY 1 are positioned by the abutment of the flange 112 (FIG. 5).

[0019] However, at this stage, the shell assembly 1 is not sufficiently locked against the force, particularly in the removal direction. Therefore, the shell assembly 1 is fixed by a retainer 3, which will be described later. As shown in FIG. 7, the housing 2 has slits 22 cut into the housing 2 in a direction perpendicular to the extension direction of the insertion hole 21. B As shown in FIG. B The slit 22 is connected to the insertion hole 21, and a first groove 221 and a second groove 222 are formed on the inner surface of the slit 22 in the order from the center of the housing 2 to the center of the housing 2. B Housing 2 Opposite The two surfaces are provided to face each other.

[0020] <Retainer 3> In this embodiment, two retainers 3 are provided with two slits 22 BAs shown in FIG. 7 and FIG. 8, the retainer 3 has slits 22. B The connector includes a claw 31 that engages with the first groove 221 and the second groove 222 when the connector is inserted into the connector, and N recesses 32 (two recesses in this embodiment).

[0021] The recess 32 is formed so that the shell 1 is secured to the shell 1 in a provisionally fixed state in which the claw 31 is engaged with the first groove 221. 1 The flange 112 can move freely in the insertion hole 21 without being impeded by the claw 31. 22 and In a fixed state, which is an engaged state, the shell ASSY1 is inserted and the side surface is formed to abut against the flange 112.

[0022] If the side surface of the recess 32 is shaped to abut against the flange 112 over a length equal to or greater than half the circumferential length of the flange 112, the shell ASSY 1 can be fixed to the housing 2 more firmly, which is preferable.

[0023] <Effect: Engagement portion 211> The engagement portion 211 (plastic spring) of the multiple coaxial connector of this embodiment is formed on the inner surface of each insertion hole 21, close to the diagonally adjacent insertion hole 21, i.e., toward the center of the connector, thereby enabling the external dimensions of the connector to be reduced in size.

[0024] The engaging parts 211 (plastic springs) of the multiple coaxial connector of this embodiment are all formed near the center of the multiple coaxial connector, so they can be made the same shape. Since the engaging parts 211 (plastic springs) are all the same shape, it is expected that the design can be simplified in consideration of the spring characteristics, the mold design can be simplified, and the maintenance costs can be reduced by sharing core parts during mold maintenance.

[0025] As described above, the engaging portions 211 of the multiple coaxial connector of this embodiment are all positioned toward the center of the housing 2, which results in an equal amount of material filling time from the gate position to the engaging portions 211 (resin springs) during housing molding, and also makes it easier to manage molding conditions to prevent short shots.

[0026] <Effect: Engagement portion 211 = half-lock shape> Although the insertion holes 21 corresponding to each shell ASSY1 are determined in advance, there is a possibility that the shell ASSY1 may be inserted into the wrong insertion hole 21. In this case, if the engagement portion 211 is engaged with the shell 11 in a full-lock shape, a dedicated tool for displacing the engagement portion 211 is required to remove the shell 11 from the housing 2. The removal work using a dedicated tool is very difficult to perform because it is affected by the length and weight of the cable, and the engagement portion 211 may be damaged depending on the weight of the cable. If the engagement portion 211 is engaged with the shell 11 in a half-lock shape, the shell 11 can be removed from the housing 2 without damaging the engagement portion 211, making rework work in the event of incorrect wiring easy.

[0027] <Effect: Retainer 3> Due to the structure of the engaging portion 211, the protruding portion 2111 that engages with the recess 111 cannot be made large, and so the area of ​​contact with the shell 11 is small. Therefore, when a load is applied to the shell ASSY1 in the removal direction, there is a structural problem in that the protruding portion 2111 is damaged and the shell ASSY1 falls off from the housing 2. In contrast, the shell ASSY1 directly contacts the retainer 3 and is completely fixed to the housing 2, so in the completely fixed state, the removal resistance can be controlled without relying on the engaging portion 211.

[0028] As described above, if the retainer 3 is designed to abut against the flange 112 of the shell 11, the contact area with the flange 112 can be made larger than the contact area of ​​the protrusion 2111 of the engagement portion 211, making it easy to achieve and maintain the required resistance to removal of the shell ASSY 1.

[0029] As shown in FIG. 9, the shell ASSY 1 can be inserted into the housing 2 with the retainer 3 in a temporarily fixed position, so that the process of completely fixing the retainer 3 is simplified.

[0030] Since the retainer 3 can be temporarily fixed to the housing 2, when the parts are provided to the user as service parts, they can be provided in a temporarily assembled state, which has the effect of facilitating inventory management and improving workability.

[0031] Although the number of steps has increased due to the addition of the process of provisionally assembling the retainer 3, this prevents deterioration of workability caused by the weight of the coaxial cable 14 and simplifies the process after inserting the shell ASSY 1, thereby shortening the total work time.

[0032] The jig used in the process of completely fixing the retainer 3 can also be simplified (manual assembly is possible without the jig).

[0033] As described above, the retainers 3 are provided in pairs, each of which is connected to each of the slits 22. B Since the retainer 3 is inserted through the flange 112 of the shell 11, the contact area between the retainer 3 and the flange 112 of the shell 11 can be increased, and the resistance to removal is improved.

[0034] <Modification> In the first embodiment, an example where N=2 and M=2 is disclosed, but the same effect can be obtained even if, for example, the shell ASSY 1 and the insertion holes 21 are arranged in 2 rows and 3 columns, or in 3 rows and 3 columns.

Claims

1. A multiple coaxial connector including a shell assembly, a housing, and a retainer, The shell assembly includes: a shell including a recess and a flange around its periphery; A body accommodated in the shell; a contact housed in the body; a coaxial cable connected to the shell and the contact, The shell assembly includes: The shell assembly is fixed to the housing in two rows in a second direction perpendicular to a first direction, which is an extension direction of the shell assembly, and in two columns in a third direction perpendicular to both the first and second directions; The housing includes: 2 rows x 2 columns of insertion holes through which the respective ends of the shell ASSY are inserted; an engagement portion formed on each inner surface of the insertion hole at a position adjacent to the insertion hole diagonally adjacent to the insertion hole, the engagement portion having a half-lock shape that is unlocked when a predetermined load is applied in a direction in which the shell assembly is pulled out, and which engages with the recess; a slit formed by cutting out the housing in a direction perpendicular to an extension direction of the insertion hole, the slit being connected to the insertion hole, and having a first groove and a second groove formed on an inner surface thereof in that order from farthest from a center of the housing, The retainer includes: a claw that engages with the first groove and the second groove when inserted into the slit; In a provisionally fixed state in which the claw is engaged with the first groove, the movement of the shell and the flange within the insertion hole is not hindered, and in a fixed state in which the claw is engaged with the second groove, the shell assembly is inserted through two recesses whose side surfaces abut against the flange. Multi-coaxial connector.

2. 2. The multiple coaxial connector according to claim 1, The slits are provided in pairs on opposing surfaces of the housing, The two retainers are inserted through the respective slits. Multi-coaxial connector.

3. 3. The multiple coaxial connector according to claim 1, The side surface of the recessed portion is The flange is in contact with the flange over a length equal to or greater than half of the perimeter of the flange. Multi-coaxial connector.

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