connector

Abstract

Provided is a connector that improves heat dissipation efficiency and prevents a wire cover from being connected to a housing. A connector (10, 10A) includes a housing (20), a plurality of wires (50) extending rearward from the housing (20), and a wire cover (80, 80A) covering the wires (50). The wires (50) are bent inward of the wire cover (80, 80A) and drawn out to one side from one end of the wire cover (80), and include small-diameter wires (50N) and large-diameter wires (50W) having a larger diameter than the small-diameter wires (50N). The wire cover (80) includes a guide wall (81) disposed rearward of the housing (20), a pair of side walls (86) protruding from the guide wall (81) and engaged with the housing (20), a front end opening (91) opened between front ends of the pair of side walls (86), an end opening (92) opened between one ends of the pair of side walls (86), and a partition plate (95, 95A) disposed inward of the wire cover (80, 80A). The large-diameter wires (50W) are disposed rearward of the partition plate (95, 95A) inward of the wire cover (80, 80A). The small-diameter wires (50N) are disposed forward of the partition plate (95, 95A) inward of the wire cover (80, 80A).

Description

Technical Field

[0001] This disclosure relates to connectors. Background Technology

[0002] Patent Document 1 describes a connector comprising a connector housing, multiple wires extending rearward from the connector housing, and a connector cover (hereinafter referred to as the wire cover) fitted onto the connector housing. The multiple wires are bent inside the wire cover and led out laterally from one end of the wire cover. Connectors with wire covers are also disclosed in Patent Documents 2-4.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2011-253681

[0006] Patent Document 2: Japanese Patent Application Publication No. 2012-234659

[0007] Patent Document 3: Japanese Patent Application Publication No. 2015-210967

[0008] Patent Document 4: Japanese Patent Application Publication No. 2016-91677 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] The connector contains multiple wires, including small-diameter wires and large-diameter wires with a diameter greater than that of the small-diameter wires. A large current flows through the large-diameter wires. If large-diameter and small-diameter wires are mixed inside the wire cover, heat generated from the large-diameter wires may become trapped between the small-diameter wires, reducing heat dissipation efficiency. Furthermore, when the large-diameter wire is bent at a large angle inside the wire cover, the wire cover may be detached from the connector housing due to the bending reaction force of the large-diameter wire.

[0011] Therefore, this disclosure aims to provide a connector that can improve heat dissipation efficiency and prevent the wire cover from detaching from the housing.

[0012] Solution for solving the problem

[0013] The connector disclosed herein includes a housing, a plurality of wires extending rearward from the housing, and a wire cover covering the plurality of wires. The plurality of wires are bent inside the wire cover and led out from one end of the wire cover to one side, including small-diameter wires and large-diameter wires with a diameter larger than that of the small-diameter wires. The wire cover has: a guide wall disposed behind the housing; a pair of side walls protruding from the guide wall and engaging with the housing; a front opening between the front ends of the pair of side walls; a one-end opening between one end of the pair of side walls; and a partition plate disposed inside the wire cover. The large-diameter wires are disposed behind the partition plate inside the wire cover, and the small-diameter wires are disposed in front of the partition plate inside the wire cover.

[0014] Invention Effects

[0015] According to this disclosure, a connector that can improve heat dissipation efficiency and prevent the wire cover from detaching from the housing can be provided. Attached Figure Description

[0016] Figure 1 This is a side sectional view of the connector of Embodiment 1.

[0017] Figure 2 This is a top sectional view of the connector.

[0018] Figure 3 This is a rear view of the female shell.

[0019] Figure 4 This is a 3D view of the cable cover from the front.

[0020] Figure 5 This is a rear view of the wire cover.

[0021] Figure 6 This is a side sectional view of the connector on the wire cover side of Embodiment 2.

[0022] Figure 7 It is a top sectional view showing the state in which a large-diameter wire passes through the inside of the wire cover. Detailed Implementation

[0023] [Description of embodiments of this disclosure]

[0024] First, the implementation methods of this disclosure are listed and explained.

[0025] The connector disclosed herein,

[0026] (1) A housing, a plurality of wires extending rearward from the housing, and a wire cover covering the plurality of wires, the plurality of wires being bent inside the wire cover and extending out from one end of the wire cover to one side, including small-diameter wires and large-diameter wires with a diameter larger than that of the small-diameter wires, the wire cover having: a guide wall disposed behind the housing; a pair of side walls protruding from the guide wall and engaging with the housing; a front opening between the front ends of the pair of side walls; a one-end opening between one end of the pair of side walls; and a partition plate disposed inside the wire cover, the large-diameter wires being disposed behind the partition plate inside the wire cover, and the small-diameter wires being disposed in front of the partition plate inside the wire cover.

[0027] According to the above structure, the large-diameter wire and the small-diameter wire are separated inside the wire cover by a partition plate. Therefore, heat generated from the large-diameter wire is prevented from becoming trapped between the small-diameter wires, improving heat dissipation efficiency. Furthermore, because the large-diameter wire is positioned behind the partition plate inside the wire cover, large-angle bending of the large-diameter wire inside the wire cover is prevented. Therefore, large bending reaction forces are avoided from being applied to the wire cover from the large-diameter wire, preventing the wire cover from detaching from the housing.

[0028] (2) Preferably, the guide wall has an opening behind the partition plate, through which a portion of the large-diameter wire can be visually identified.

[0029] According to the above structure, heat generated from the large-diameter wire can be released through the opening, further improving heat dissipation efficiency. Furthermore, the opening allows for monitoring the condition of the large-diameter wire inside the wire cover.

[0030] Furthermore, assuming the rear of the partition is closed by a guide wall, it is difficult to use a mold that moves rearward when forming the partition. As a result, sometimes it is necessary to make the wire cover a semi-segmented structure. In this regard, according to the above structure, the partition wall opens at the rear of the wire cover through an opening and also at the front of the wire cover through an opening on the front surface. Therefore, when forming the partition, a mold that moves in both the front and rear directions can be used, and the wire cover can be made into an integral structure.

[0031] (3) Preferably, the partition plate is in the shape of extending from the front end of the partition plate toward one end in a curved manner, and the opening size between one end of the partition plate and the guide wall is smaller than the opening size between the front end of the partition plate and the guide wall.

[0032] Based on the above structure, the movement of large-diameter wires can be restricted between one end of the partition plate and the guide wall.

[0033] (4) Preferably, the opening size between one end of the partition plate and the guide wall is more than 1 and less than 2 times the diameter of the large-diameter wire.

[0034] According to the above structure, large-diameter wires can be configured to contact the guide wall. As a result, heat generated from the large-diameter wires can be effectively dissipated to the guide wall.

[0035] (5) Preferably, the partition is configured to extend between the pair of sidewalls, and the two ends of the partition in the direction of extension are formed as fixed ends.

[0036] Based on the above structure, the partition can clearly divide the space for large-diameter wires and the space for small-diameter wires, effectively preventing large-diameter wires from being mixed with small-diameter wires.

[0037] (6) Preferably, the partition is configured to extend between the pair of sidewalls, with one end of the partition in the direction of extension being a fixed end and the other end of the partition in the direction of extension being a free end, and having a gap between it and the opposing wall surface that is larger than the diameter of the large-diameter wire.

[0038] According to the above structure, large-diameter wires extending from the housing can reach the rear of the partition plate after passing through the gap between the free end of the partition plate and the wall opposite to the free end. Therefore, even if the wire cover is an integral structure, it is not necessary to pass the large-diameter wires through the inside of the wire cover beforehand, resulting in excellent workability.

[0039] [Details of the embodiments of this disclosure]

[0040] The following is a reference to the appendix. Figure 1 Specific examples of embodiments of this disclosure will be described below. Furthermore, the invention is not limited to these examples, but is intended to include all modifications within the meaning and scope of the claims, as indicated by the claims.

[0041] <Example 1>

[0042] like Figure 1 As shown, the connector 10 of Embodiment 1 of this invention includes a housing 20, terminal parts 40, wires 50, sealing members 60, a rear retainer 70, and a wire cover 80. The housing 20 can be fitted with a counterpart housing (not shown). In the following description, regarding the front-rear direction, the side of the housing 20 that faces the counterpart housing at the beginning of the fitting is referred to as the front side. Figure 1 The lower side becomes the front side. The vertical direction is equivalent to... Figure 1 The left and right directions, Figure 1 The left side becomes the top side. The left and right directions are synonymous with the width direction. Figure 2 and Figure 3 The upper side becomes the right side. Figure 2 and Figure 3 The lower side becomes the left side. In the various diagrams, "F", "B", "U", "D", "L" and "R" represent the front, back, top, bottom, left, and right sides, respectively.

[0043] The shell 20 is made of synthetic resin, such as Figure 1 As shown, it has multiple cavities 21. Cavities 21 include a small-diameter cavity 21N and a large-diameter cavity 21W with a diameter larger than that of the small-diameter cavity 21N. For example... Figure 3 As shown, the large-diameter cavities 21W are arranged in pairs on the upper side of the housing 20. Multiple small-diameter cavities 21N are arranged vertically, horizontally, and vertically on the portion of the housing 20 excluding the upper side.

[0044] The housing 20 has a surrounding wall 22 at the rear. For example... Figure 1 As shown, a locking part 23 is provided at the upper end of the surrounding wall 22. The locking part 23 is formed into a hole shape that passes through the surrounding wall 22 vertically. Additionally, as... Figure 2 As shown, a locking portion 24 is provided on the lower side of the surrounding wall 22. The locking portion 24 is shaped to be recessed into the left and right inner surfaces of the surrounding wall 22.

[0045] like Figure 1 As shown, terminal part 40 is a female terminal that is inserted into each cavity 21 from the rear. Terminal part 40 is connected to a male terminal on the opposite side (not shown). Terminal part 40 includes a small terminal 40N and a large terminal 40W that is larger than the small terminal 40N. The small terminal 40N is housed in the small-diameter cavity 21N. The large terminal 40W is housed in the large-diameter cavity 21W.

[0046] The wire 50 is crimped to the rear of the terminal part 40. The wire 50 is a sheathed wire, including a small-diameter wire 50N and a large-diameter wire 50W with a diameter larger than that of the small-diameter wire 50N. The small-diameter wire 50N is connected to the small terminal 40N. The large-diameter wire 50W is connected to the large terminal 40W.

[0047] The sealing member 60 is made of rubber and is located inside the housing 20. For example... Figure 1 and Figure 2 As shown, the rear retainer 70 is positioned behind the sealing member 60 and engages with the housing 20. The sealing member 60 is held between the housing 20 and the rear retainer 70. The wire 50 extends rearward from the rear surface of the housing 20 through the sealing member 60 and the rear retainer 70. Figure 1 As shown, the sealing member 60 is provided with a sealing hole 61 for liquid-tight insertion of the wire 50.

[0048] The wire cover 80 is a cap-shaped, one-piece component made of synthetic resin, assembled to the housing 20 to cover the wire 50. For example... Figure 4 and Figure 5As shown, the wire cover 80 has a plate-shaped guide wall 81. The guide wall 81 has a guide body portion 82 extending in the vertical direction and an end wall portion 83 extending forward by curving from the upper end of the guide body portion 82. The front surface of the guide body portion 82 is disposed opposite to the rear surface of the rear retainer 70. A hook portion 84 is provided at the front end of the end wall portion 83. The hook portion 84 is formed into an upwardly protruding protrusion, such as... Figure 1 As shown, it is inserted into the locking part 23 of the housing 20 and locked.

[0049] The guide wall 81 has an opening 85 located near the upper end of the guide body 82 and connected to the end wall 83. For example... Figure 5 As shown, the opening 85 is rectangular when viewed from the rear, and the guide wall 81 passes through it in the front-rear direction, which is the wall thickness direction.

[0050] In addition, such as Figure 2 and Figure 3 As shown, the wire cover 80 has a pair of plate-shaped sidewalls 86 protruding forward from the left and right ends of the guide wall 81. (As shown...) Figure 4 As shown, the sidewall 86 has an inner wall portion 87 at its front and outer wall portions 88 disposed on the left and right outer sides of the inner wall portion 87. The front end of the inner wall portion 87 is connected to the front end of the end wall portion 83 without a step and contacts the surrounding wall 22 of the housing 20. The outer wall portion 88 has a portion that protrudes forward from the front end of the inner wall portion 87, although not shown, it is disposed on the outer side of the surrounding wall 22. The two sidewalls 86 have a locking portion 89 at the lower end of the inner wall portion 87. The locking portion 89 is formed as a protrusion that protrudes laterally, such as... Figure 2 As shown, the locking part 24 is embedded into the housing 20 and locked in place.

[0051] like Figure 4 As shown, the wire cover 80 has a front opening 91 between the front ends of the two side walls 86 and a one-end opening 92 between the lower ends of the two side walls 86. Figure 1 As shown, the front opening 91 of the wire cover 80 is closed by the rear retainer 70. Each wire 50 extending rearward from the housing 20 is bent inside the wire cover 80 and led out downward from one end opening 92.

[0052] like Figure 2 As shown, a pair of side plates 93 facing each other in the left-right direction are provided on the inner side of the wire cover 80. The side plates 93 are flat plates along the front-back and up-down directions. Figure 4 As shown, the side plate 93 is connected to the guide wall 81 and the inner wall portion 87, and has a connecting end 94 that bends along the end wall portion 83 of the guide wall 81.

[0053] Additionally, a plate-shaped partition 95 is provided on the inner side of the wire cover 80. For example... Figure 2As shown, the partition plate 95 is arranged extending in the left-right direction. The left and right ends of the partition plate 95 become fixed ends 96 that are connected to the opposite side plates 93.

[0054] like Figure 1 As shown, the partition 95 has a curved shape extending from the front end to the lower end. The lower end of the partition 95 is also the rear end of the partition 95. The partition 95 is located in front of the opening 85, as... Figure 5 As shown, the upper and rear surfaces can be visually observed through the opening 85. Additionally, the front surface of the partition 95 can be visually observed through the front opening 91, and the lower surface can be visually observed through the opening 92 at one end.

[0055] like Figure 1 As shown, the front-to-back gap C1 between the lower end of the partition plate 95 and the guide body 82 is smaller than the vertical gap C2 between the front end of the partition plate 95 and the end wall 83. Specifically, the front-to-back gap C1 between the lower end of the partition plate 95 and the guide body 82 is set to be more than 1 and less than 2 times the diameter of a 50W large-diameter wire.

[0056] Inside the wire cover 80, an outer ring passage 97 is formed between the partition plate 95 (which serves as the rear of the partition plate 95) and the guide wall 81, through which a large-diameter wire 50W is inserted. Additionally, inside the wire cover 80, an inner ring passage 98 is formed between the partition plate 95 (which serves as the front of the partition plate 95) and the front opening 91, through which a small-diameter wire 50N is inserted.

[0057] Next, the method of assembling the wire cover 80 into the housing 20 and the function of the connector 10 will be explained.

[0058] Before assembling the wire cover 80 into the housing 20, one or two large-diameter wires 50W are pre-passed through the outer ring insertion passage 97 inside the wire cover 80. Next, a large terminal 40W, which is connected to the end of the large-diameter wire 50W, is inserted into the large-diameter cavity 21W. Alternatively, after passing the large-diameter wire 50W through the outer ring insertion passage 97, a large terminal 40W can also be connected to the end of the large-diameter wire 50W. Additionally, a small terminal 40N, which is connected to the end of the small-diameter wire 50N, is pre-inserted into the small-diameter cavity 21N.

[0059] Next, bring the upper end of the wire cover 80 close to the housing 20, and insert the hook portion 84 of the wire cover 80 into the locking portion 23 of the housing 20. In this state, using the hook position of the hook portion 84 and the locking portion 23 as a fulcrum, rotate the wire cover 80 so that the lower end of the wire cover 80 approaches the housing 20. When the guide body portion 82 of the wire cover 80 reaches a state parallel to the rear surface of the housing 20 in the vertical direction, as... Figure 2As shown, the locking part 89 provided at the lower end of the wire cover 80 is elastically embedded into the locking part 24 of the housing 20, and the wire cover 80 is assembled to the housing 20 in an anti-detachment state.

[0060] During the rotation of the wire cover 80, as the lower end of the wire cover 80 approaches the housing 20, each wire 50 is pressed down by the guide body 82 and gradually bends downward. The large-diameter wire 50W becomes bent along the partition plate 95 and then extends straight downward along the guide body 82. Because the large-diameter wire 50W is restricted from moving forward and backward in the front-back direction within the gap C1 between the lower end of the partition plate 95 and the guide body 82, its movement is restricted. Figure 1 As shown, it is arranged parallel to or close to the guide body 82. Furthermore, the bend in the large-diameter wire 50W can be visually confirmed from the rear through the open section 85.

[0061] The small-diameter wire 50N passes through the inner ring insertion passage 98, which is located in front of the partition plate 95, thus preventing it from mixing with the large-diameter wire 50W and bending downwards. Therefore, even if a large current flows through the large-diameter wire 50W, the heat generated by the large-diameter wire 50W can be suppressed from affecting the small-diameter wire 50N. In particular, because the large-diameter wire 50W is positioned in contact with or close to the guide body 82, heat can be released not only to the wire cover 80 but also to the atmosphere through the opening 85. As a result, heat dissipation efficiency is good, and heat buildup inside the wire cover 80 is effectively suppressed.

[0062] Furthermore, because the large-diameter wire 50W passes through the outer ring insertion passage 97 inside the wire cover 80, it must be bent at a large angle from the rear surface of the rear retainer 70. Therefore, the bending reaction force of the large-diameter wire 50W acting on the guide body 82 can be suppressed to a greater extent. As a result, the locking part 24 and the locked part 89 can be maintained, preventing the wire cover 80 from accidentally detaching from the housing 20.

[0063] Thus, according to Embodiment 1, the large-diameter wire 50W and the small-diameter wire 50N are separated inside the wire cover 80 by a partition plate 95, thereby preventing the large-diameter wire 50W from being buried between the small-diameter wires 50N. As a result, the heat generated from the large-diameter wire 50W is less likely to be trapped between the small-diameter wires 50N, improving heat dissipation efficiency. In particular, because the two ends of the partition plate 95 become fixed ends 96, the outer ring insertion passage 97 and the inner ring insertion passage 98 are not connected but are separated by the partition plate 95, reliably preventing the large-diameter wire 50W from being buried between the small-diameter wires 50N.

[0064] <Example 2>

[0065] Next, use Figure 6 and Figure 7Example 2 of this embodiment will be described. The inner shape of the wire cover 80A of the connector 10A in Example 2, and particularly the shape of the partition plate 95A, differ from that in Example 1. Everything else is the same as in Example 1; the same reference numerals are used for parts that are the same or corresponding to those in Example 1, and repeated descriptions are omitted.

[0066] The separator 95A is located on the inner side of the wire cover 80A, separated by the left and right center. Figure 7 The left side) extends in the left and right direction, with one end of the extension direction ( Figure 7 The left end) becomes a fixed end 96A connected to the opposite side plate 93, and the other end in the extending direction ( Figure 7 The right end) becomes the free end 99. A gap exceeding the diameter of a large-diameter wire of 50W is formed between the free end 99 of the partition plate 95A and the side plate 93 opposite to the free end 99.

[0067] like Figure 6 As shown, the partition plate 95A has a shape that extends straight from the front end to the rear end and bends downward at the rear end. The front end of the partition plate 95A is located at the same position as the front end of the side wall 86.

[0068] like Figure 7 As shown, on the inner side of the wire cover 80A and the side opposite to the partition plate 95A ( Figure 7 A second partition plate 101 is provided on the right side. The second partition plate 101 extends in the left-right direction, with one end in the extension direction becoming a fixed end 102 connected to the opposite side plate 93, and the other end in the extension direction becoming a free end 104. A gap exceeding the diameter of a large-diameter wire 50W is formed between the free end 104 of the second partition plate 101 and the side plate 93 opposite to the free end 104. In addition, a gap exceeding the diameter of a large-diameter wire 50W is also formed between the respective free ends 99 and 104 of the second partition plate 101 and the partition plate 95A. The rear surface of the second partition plate 101 is positioned one level lower than the rear surface of the partition plate 95A.

[0069] like Figure 6 As shown, the second partition plate 101 is similar to the partition plate 95A, with its rear end bent downwards into a curved shape.

[0070] In this embodiment 2, before assembling the wire cover 80A into the housing 20, the large terminal 40W is pre-inserted into the large-diameter cavity 21W, and the small terminal 40N is pre-inserted into the small-diameter cavity 21N. The large-diameter wire 50W connected to the large terminal 40W and the small-diameter wire 50N connected to the small terminal 40N are both arranged to extend rearward from the housing 20. Next, the wire cover 80A is assembled into the housing 20. Figure 7As shown, with the two large-diameter wires 50W arranged longitudinally in the front-to-back direction, moving the large-diameter wire 50W extending from one side (left) to the rear allows it to reach the outer ring insertion passage 97, which is located behind the partition plate 95A. Similarly, moving the large-diameter wire 50W extending from the other side (right) to the rear allows it to reach the outer ring insertion passage 97, which is located behind the second partition plate 101. Figure 6 As shown, the small-diameter wire 50N is positioned in the inner ring insertion passage 98, which is located in front of the partition plate 95A.

[0071] The large-diameter wire 50W and the small-diameter wire 50N are separated inside the wire cover 80A by a partition plate 95A and a second partition plate 101. Therefore, it is possible to prevent the large-diameter wire 50W from being buried between the small-diameter wires 50N.

[0072] Furthermore, according to this embodiment 2, it is not necessary to pass the large-diameter wire 50W through the inside of the wire cover 80A beforehand, so the workability is excellent when assembling the wire cover 80A into the housing 20.

[0073] [Other embodiments of this disclosure]

[0074] The embodiments disclosed herein should be considered illustrative in all respects, and not restrictive.

[0075] In Embodiments 1 and 2, the wire cover is a single, non-separable / non-openable unit. However, the wire cover may also be composed of a pair of separable half-parts, or a pair of half-parts that can be opened and closed by means of a hinge. When the wire cover is composed of a pair of half-parts, the opening portion may be omitted from the wire cover.

[0076] In the cases of Embodiment 1 and Embodiment 2, the wire cover has a side plate. However, the side plate can also be omitted from the wire cover. In this case, the left and right ends of the partition plate can also be directly fixed to the side wall.

[0077] In the case of embodiment 2, the partition plate is disposed inside the wire cover. Figure 7 On the left side, Figure 7 The left end is defined as the end extending in the direction of extension. However, the partition plate and the second partition plate can also be replaced, and the partition plate is disposed inside the wire cover. Figure 7 On the right side. With the partition positioned on the right side of the diagram, simply... Figure 7 The right end can be defined as the side end in the direction of extension.

[0078] In Embodiments 1 and 2, the connector is a waterproof connector, with the wire cover facing the rear surface of the rear retainer. However, the connector can also be a non-waterproof connector. In this case, the rear retainer can be omitted, so the wire cover can face the rear surface of the housing.

[0079] Explanation of reference numerals in the attached figures

[0080] 10, 10A: Connector

[0081] 20: Shell

[0082] 21: cavity

[0083] 21N: Small-diameter cavity

[0084] 21W: Large diameter cavity

[0085] 22: Enclosure Wall

[0086] 23: Locking section

[0087] 24: Locking part

[0088] 40: Terminal parts

[0089] 40N: Miniature Terminal

[0090] 40W: Large terminal

[0091] 50: Electrical wire

[0092] 50N: Small diameter wire

[0093] 50W: Large diameter wire

[0094] 60: Sealing component

[0095] 61: Sealing hole

[0096] 70: Rear maintenance body

[0097] 80, 80A: Wire cover

[0098] 81: Guide Wall

[0099] 82: Guiding Main Body

[0100] 83: End wall part

[0101] 84: Hook and Hanging Part

[0102] 85: Open Department

[0103] 86: Sidewall

[0104] 87: Inner wall part

[0105] 88: Outer wall section

[0106] 89: Stuck Part

[0107] 91: Front opening

[0108] 92: Open at one end

[0109] 93: Side panel

[0110] 94: Connection End

[0111] 95, 95A: Divider

[0112] 96, 96A, 102: Fixed end

[0113] 97: Outer ring insertion path

[0114] 98: Inner loop insertion path

[0115] 99, 104: Free End

[0116] 101: Divider

[0117] C1: Clearance in the front-to-back direction

[0118] C2: Gap in the vertical direction

Claims

1. A connector comprising a housing, a plurality of electric wires extending rearward from the housing, and a wire cover covering the plurality of electric wires, the plurality of electric wires being bent at an inner side of the wire cover and drawn out to one side from one end of the wire cover, the plurality of electric wires including a small-diameter electric wire and a large-diameter electric wire having a diameter larger than that of the small-diameter electric wire, the wire cover having a guide wall disposed rearward of the housing, a pair of side walls protruding from the guide wall and engaged with the housing, a front end opening between front ends of the pair of side walls, one end opening between one ends of the pair of side walls, and a partition plate disposed at an inner side of the wire cover, the large-diameter electric wire and the small-diameter electric wire being separated by the partition plate at the inner side of the wire cover, the large-diameter electric wire being disposed rearward of the partition plate at the inner side of the wire cover, and the small-diameter electric wire being disposed forward of the partition plate at the inner side of the wire cover. The guide wall has an open portion rearward of the partition plate, through which a portion of the large-diameter electric wire is visually confirmed. The partition plate is curvedly extended from a front end toward one end of the partition plate. An opening size between the one end of the partition plate and the guide wall is smaller than an opening size between the front end of the partition plate and the guide wall. The opening size between the one end of the partition plate and the guide wall is 1 times or more and 2 times or less of the diameter of the large-diameter electric wire. The partition plate is disposed so as to extend between the pair of side walls, both side ends of an extension direction of the partition plate being fixed ends.

2. The connector of claim 1, wherein, One side end of the extension direction of the partition plate is a fixed end.

3. The connector of claim 1 or claim 2, wherein, The other side end of the extension direction of the partition plate is a free end having a gap larger than the diameter of the large-diameter electric wire between opposing wall surfaces. ​ 4. The connector of claim 3, wherein, ​ 5. The connector of claim 1 or claim 2, wherein, ​ 6. The connector of claim 1 or claim 2, wherein, ​ ​

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