Connector

Abstract

To provide a connector that can improve the assembling property of a sealing plug.SOLUTION: A connector 10 includes a housing with an accommodation hole 32, a terminal accommodated in the housing, an electric wire connected to the terminal, and a sealing plug 23 that is accommodated in the accommodation hole 32 to close the accommodation hole 32 and lets the electric wire penetrate therethrough. The housing includes a housing main body 30 with the accommodation hole 32, and a sealing plug attachment member 40 to be attached to the housing main body 30. The sealing plug attachment member 40 includes an introduction hole 41 continuing to the entrance end 33 of the accommodation hole 32. The introduction hole 41 is configured so that, when the sealing plug 23 is inserted into the introduction hole 41 and the accommodation hole 32, the sealing plug 23 is deformed in advance before the sealing plug 23 is inserted into the accommodation hole 32.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to connectors. [Background technology]

[0002] For example, the connector described in Patent Document 1 includes a housing, an electric wire with a terminal accommodated in the housing, and a sealing plug (rubber plug in Patent Document 1) attached to the outer periphery of the electric wire with the terminal. The sealing plug is accommodated in a cavity of the housing to close the cavity. The sealing plug includes a plurality of lip portions (sealing portions in Patent Document 1) protruding from the outer periphery of the sealing plug. Each lip portion is in close contact with the inner periphery of the cavity, thereby ensuring the sealing of the cavity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-197206 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above connector, a terminal-attached electric wire with a large wire diameter may be used without changing the design of the housing for general purpose. In this case, as the wire diameter increases, the outer diameter of the sealing plug attached to the terminal-attached electric wire also increases and becomes thicker, so that the sealing plug may not be inserted into the cavity of the connector housing to the proper position. If the sealing plug does not enter the cavity to the proper position, for example, a part of the lip of the sealing plug may not enter the cavity. This may deteriorate the sealing performance of the sealing plug.

[0005] An object of the present disclosure is to provide a connector that enables improved assembly of a sealing plug. [Means for solving the problem]

[0006] The connector of the present disclosure is a connector comprising a housing having an accommodating hole, a terminal accommodated in the housing, an electric wire connected to the terminal, and a sealing plug accommodated in the accommodating hole to block the accommodating hole and through which the electric wire passes, wherein the housing comprises a housing main body having the accommodating hole, and a sealing plug mounting member attached to the housing main body, and the sealing plug mounting member has an introduction hole communicating with the entrance end of the accommodating hole, and the introduction hole is configured to pre-deform the sealing plug before it is inserted into the accommodating hole when the sealing plug is inserted into the introduction hole and the accommodating hole. Effect of the Invention

[0007] According to the connector of the present disclosure, it is possible to improve the ease of assembly of the sealing plug. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a connector according to one embodiment. [Diagram 2] FIG. 2 is a perspective view of a housing main body in the embodiment. [Diagram 3] FIG. 3 is an enlarged side view showing a part of the housing in the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. [Figure 6] FIG. 6 is a schematic diagram for explaining the relationship between the receiving hole and the introduction hole in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The connector of the present disclosure comprises: [1] A connector comprising a housing having an accommodating hole, a terminal accommodated in the housing, an electric wire connected to the terminal, and a sealing plug accommodated in the accommodating hole to close the accommodating hole and through which the electric wire is passed, wherein the housing comprises a housing main body having the accommodating hole, and a sealing plug mounting member attached to the housing main body, the sealing plug mounting member having an introduction hole communicating with an entrance end of the accommodating hole, and the introduction hole is configured to pre-deform the sealing plug before it is inserted into the accommodating hole when the sealing plug is inserted into the introduction hole and the accommodating hole.

[0010] According to this configuration, when the sealing plug attached to the electric wire with the terminal is attached to the housing, the sealing plug is deformed in advance when passing through the introduction hole, and then inserted into the receiving hole in the deformed state. This makes it possible to easily insert the sealing plug to the appropriate position in the receiving hole. As a result, the sealing plug is held in the appropriate position, which contributes to improving the sealing performance.

[0011] [2] In the above item [1], the accommodating hole may include a first straight portion having a uniform cross-sectional shape perpendicular to the axis of the accommodating hole in a direction along the axis, the cross-sectional shape of the first straight portion being circular, and the introduction hole may include a second straight portion having a uniform cross-sectional shape perpendicular to the axis of the introduction hole in a direction along the axis, and the cross-sectional shape of the second straight portion may be an elongated hole shape having a minor axis equal to a diameter of the first straight portion and a major axis longer than the diameter of the first straight portion.

[0012] According to this configuration, before the sealing plug is inserted into the receiving hole, the second straight portion of the introduction hole can deform the sealing plug mainly in the direction along the minor axis. Then, the sealing plug is inserted into the receiving hole in a state where it is deformed in the direction along the minor axis, so that the sealing plug can be more easily inserted to the appropriate position in the receiving hole.

[0013] [3] In the above item [2], the major axis of the second straight portion may be set equal to an outer diameter of the sealing plug when not attached to the housing. With this configuration, the force that deforms the sealing plug in the direction along the major axis due to the second straight portion of the introduction hole can be reduced, and the load applied to the sealing plug when inserting the sealing plug into the second straight portion can be reduced, which contributes to improving the ease of assembly of the sealing plug.

[0014] [4] In the above [2] or [3], the axis of the accommodating hole and the axis of the introduction hole may be parallel to each other, and when viewed from a direction along the axis of the introduction hole, one end of the second straight portion in a direction along the major axis may coincide with an inner surface of the first straight portion.

[0015] With this configuration, deformation of the sealing plug when it is inserted into the first straight section of the receiving hole can be concentrated on only one side in the direction along the major axis, making it easier to insert the sealing plug into the appropriate position in the receiving hole.

[0016] [Details of the embodiment of the present disclosure] Specific examples of the connector of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, some of the configuration may be exaggerated or simplified. In addition, the dimensional ratio of each part may differ in each drawing. In addition, "parallel" and "orthogonal" in this specification do not only mean strictly parallel or orthogonal, but also include roughly parallel or orthogonal within the range of the action and effect of this embodiment. In addition, "cylindrical" as used in the description of this specification includes not only those in which a peripheral wall is formed continuously around the entire circumference, but also those in which a plurality of parts are combined to form a cylindrical shape, and those having a notch in a part of the circumference such as a C-shape. In addition, the shape of "cylindrical" includes a circle, an ellipse, and a polygon with a sharp or rounded corner. In addition, the terms "first" and "second" in this specification are used simply to distinguish objects, and do not rank the objects. In addition, the present invention is not limited to these examples, and is intended to include all modifications within the scope of the claims and the meaning and scope equivalent to the claims.

[0017] (Connector 10) A connector 10 shown in Fig. 1 is connected to an electric device (not shown) mounted on a vehicle. The connector 10 includes an electric wire 11 with a terminal and a housing 12 that holds the electric wire 11 with the terminal. The housing 12 is fitted in a mating connector (not shown) provided on the electric device in a first direction X1. In the following description, the opposite direction to the first direction X1 is referred to as a second direction X2.

[0018] (Terminal Wire 11) The connector 10 includes, for example, a plurality of electric wires with terminals 11. The electric wires with terminals 11 include a terminal 21, an electric wire 22, and a sealing plug 23. The terminals 21 are fixed to ends in the longitudinal direction by crimping or the like. The terminals 21 are accommodated inside the housing 12. When the connector 10 is fitted to the mating connector, the terminals 21 are connected to mating terminals (not shown) provided in the mating connector.

[0019] (Seal plug 23) The sealing plug 23 is a rubber plug made of, for example, silicone rubber. The sealing plug 23 has a substantially cylindrical shape. The sealing plug 23 is attached to the outer periphery of the electric wire 22. That is, the electric wire 22 passes through an internal hole of the sealing plug 23. One end of the sealing plug 23 in the length direction is fixed to the outer periphery of the electric wire 22 by a sealing plug fixing part 21a, which is a part of the terminal 21.

[0020] The sealing plug 23 has, for example, a plurality of lip portions 23a protruding from the outer circumferential surface of the sealing plug 23. The plurality of lip portions 23a are arranged in parallel at intervals from one another in the longitudinal direction of the electric wire 22. Each of the lip portions 23a is formed around the entire circumference of the sealing plug 23.

[0021] (Housing 12) The housing 12 includes a housing body 30 and a sealing plug attachment member 40 attached to the housing body 30. The terminals 21 of the terminal-fitted electric wire 11 are accommodated inside the housing body 30. Each of the housing body 30 and the sealing plug attachment member 40 is formed of, for example, a synthetic resin.

[0022] As shown in Figs. 2 and 4, the housing body 30 has, for example, a mounting tube portion 31. The mounting tube portion 31 is tubular and extends in the second direction X2 (opens toward the second direction X2). The mounting tube portion 31 is cylindrical, for example. The inner peripheral surface of the mounting tube portion 31 forms an accommodating hole 32 for accommodating the seal plug 23. The accommodating hole 32 has an inlet end 33 at the tip of the accommodating hole 32 in the second direction X2. The terminal-fitted electric wire 11 including the seal plug 23 is inserted into the accommodating hole 32 from the inlet end 33. The seal plug 23 is accommodated in the accommodating hole 32 to close the accommodating hole 32. For convenience of explanation, Figs. 4 and 5 only show the outer shape of the seal plug 23 in the terminal-fitted electric wire 11, and the terminal 21 and the electric wire 22 are not shown.

[0023] (Seal plug mounting member 40) 3 and 4, the sealing plug mounting member 40 has an introduction hole 41 that communicates with the inlet end 33 of the accommodating hole 32 in the housing body 30. The introduction hole 41 is adjacent to the accommodating hole 32 of the housing body 30. In other words, the accommodating hole 32 and the introduction hole 41 are configured so that their internal spaces communicate with each other.

[0024] As shown in FIG. 2, the housing body 30 has, for example, a plurality of mounting tube portions 31 and accommodating holes 32. The housing body 30 of this embodiment has, for example, four mounting tube portions 31. That is, the housing body 30 of this embodiment has four accommodating holes 32. Also, as shown in FIG. 1, the housing 12 has, for example, a plurality of sealing plug mounting members 40. The housing 12 of this embodiment has, for example, two sealing plug mounting members 40, one above the other. The two sealing plug mounting members 40 have, for example, the same shape. Two introduction holes 41 are provided in each of the two sealing plug mounting members 40. That is, a total of four introduction holes 41 are arranged corresponding to the four accommodating holes 32 in the housing body 30.

[0025] 3, the sealing plug mounting member 40 has, for example, a first locking portion 42 and a second locking portion 43 for fixing the sealing plug mounting member 40 to the housing main body 30. The housing main body 30 has a first locked portion 34 to which the first locking portion 42 of the sealing plug mounting member 40 is locked, and a second locked portion 35 to which the second locking portion 43 of the sealing plug mounting member 40 is locked, as shown in FIGS.

[0026] 2, both the first locked portion 34 and the second locked portion 35 are provided around each mounting tubular portion 31. More specifically, the first locked portion 34 protrudes from the outer circumferential surface of the mounting tubular portion 31. When the sealing plug mounting member 40 is attached to the housing body 30, the first locking portion 42 of the sealing plug mounting member 40 is configured to be hooked onto the first locked portion 34 in the second direction X2.

[0027] The second locked portion 35 protrudes from a side surface of a wall portion 36 extending radially outward from the mounting tube portion 31. When the sealing plug mounting member 40 is attached to the housing body 30, the second locking portion 43 of the sealing plug mounting member 40 is configured to be caught by the second locked portion 35 in the second direction X2.

[0028] When attaching the electric wire with terminal 11 to the housing 12, the terminal 21 located at the tip of the electric wire with terminal 11 is inserted into the accommodating hole 32 through the introduction hole 41 of the sealing plug attachment member 40. At this time, the terminal 21 is inserted along the first direction X1. When the terminal 21 is accommodated inside the housing main body 30, the entire sealing plug 23 is accommodated inside the accommodating hole 32. In addition, the electric wire 22 is led out of the housing 12 through the accommodating hole 32 in the second direction X2.

[0029] (Detailed configuration of the receiving hole 32) Hereinafter, there will be described a detailed shape of the receiving holes 32 in the housing body 30. Note that the four receiving holes 32 located on the top, bottom, left and right sides have, for example, the same shape as each other.

[0030] 3, 4, and 5, the accommodating hole 32 has a first axis L1 parallel to the second direction X2. The accommodating hole 32 opens in the second direction X2. The accommodating hole 32 has an inlet end 33 at a tip of the accommodating hole 32 in the second direction X2. The terminal-fitted electric wire 11 including the seal plug 23 is inserted into the accommodating hole 32 from the inlet end 33. The cross-sectional shape of the accommodating hole 32 perpendicular to the first axis L1 is, for example, a circle centered on the first axis L1 over the entire axial direction of the accommodating hole 32.

[0031] The accommodating hole 32 includes, for example, a first straight portion 51 and a first enlarged diameter portion 52. The cross-sectional shape of the first straight portion 51 perpendicular to the first axis L1 is circular. Moreover, the cross-sectional shape of the first straight portion 51 perpendicular to the first axis L1 is uniform in the direction along the first axis L1. That is, the first straight portion 51 extends linearly along the first axis L1.

[0032] In the accommodating hole 32, the first enlarged diameter portion 52 is provided between the first straight portion 51 and the inlet end 33. The first enlarged diameter portion 52 is provided around the entire circumference of the accommodating hole 32. The first enlarged diameter portion 52 has an inclined shape that enlarges in diameter from one axial end of the first straight portion 51 toward the inlet end 33. The cross-sectional shape of the first enlarged diameter portion 52 perpendicular to the first axis L1 is, for example, circular. The end of the first enlarged diameter portion 52 opposite to the first straight portion 51 forms the inlet end 33 of the accommodating hole 32. That is, the diameter of the inlet end 33 is set to be larger than the diameter D1 of the first straight portion 51.

[0033] (Detailed configuration of introduction hole 41) The detailed shape of the introduction hole 41 in the sealing plug mounting member 40 will be described below. Note that the introduction holes 41 have, for example, the same shape as one another. The introduction holes 41 are configured so that when the sealing plug 23 is inserted into the introduction hole 41 and the receiving hole 32, the sealing plug 23 is deformed in advance at a stage before the sealing plug 23 is inserted into the receiving hole 32.

[0034] The introduction hole 41 has a second axis L2 parallel to the first direction X1. The second axis L2 of the introduction hole 41 is parallel to the first axis L1 of the accommodating hole 32. In addition, the second axis L2 of the introduction hole 41 is set so as not to be positioned on the same straight line as the first axis L1 of the accommodating hole 32.

[0035] The introduction hole 41 includes a second straight portion 61 and a second expanded diameter portion 62. The cross-sectional shape of the second straight portion 61 perpendicular to the second axis L2 is uniform in the direction along the second axis L2. That is, the second straight portion 61 extends linearly along the second axis L2.

[0036] The introduction hole 41 has a first opening end 63 and a second opening end 64, which are both ends in a direction along the second axis L2. When the sealing plug mounting member 40 is attached to the housing body 30, the second opening end 64 faces the inlet end 33 of the receiving hole 32. The first opening end 63 serves as an inlet when the terminal-attached electric wire 11 including the sealing plug 23 is inserted into the introduction hole 41. The second enlarged diameter portion 62 in the introduction hole 41 is provided between the second straight portion 61 and the first opening end 63. The second enlarged diameter portion 62 has an inclined shape that enlarges in diameter from one axial end of the second straight portion 61 toward the first opening end 63. In the introduction hole 41 of this embodiment, the opening area (area in a plane perpendicular to the second axis L2) of each of the first opening end 63 and the second opening end 64 is set to be larger than the cross-sectional area of ​​the receiving hole 32.

[0037] 6 shows, in a solid line, a schematic shape of the first straight portion 51 of the accommodating hole 32 and a schematic shape of the second straight portion 61 of the introduction hole 41 as viewed in the axial direction. Also, in FIG. 6, a schematic two-dot chain line shows an outer shape of the sealing plug 23 as viewed in the axial direction (outer shape of the lip portion 23a) when not attached to the housing 12.

[0038] 6, the cross-sectional shape of the second straight portion 61 perpendicular to the second axis L2 is an elongated hole shape having a major axis D2 and a minor axis D3 perpendicular to each other. The major axis D2 is set to be longer than the diameter D1 of the first straight portion 51. The minor axis D3 is set to be equal to the diameter D1 of the first straight portion 51. The major axis D2 of the second straight portion 61 is set to be the same length as the outer diameter D4 of the sealing plug 23 in a state where it is not attached to the housing 12. The outer diameter D4 of the sealing plug 23 is the diameter of the top (outermost circumference) of the lip portion 23a.

[0039] Hereinafter, an example of the shape of the second straight portion 61 as viewed from the direction along the second axis L2 will be described. As viewed from the direction along the second axis L2, the inner peripheral surface of the second straight portion 61 includes a first semicircular portion 61a, a second semicircular portion 61b, and a pair of straight portions 61c. The first semicircular portion 61a and the second semicircular portion 61b are semicircular with the same radius. The first semicircular portion 61a and the second semicircular portion 61b are shaped by being inverted 180° from each other about the second axis L2. The radii of the first semicircular portion 61a and the second semicircular portion 61b are set to be equal to the radius (half the diameter D1) of the first straight portion 51 in the receiving hole 32. The pair of straight portions 61c are located between the first semicircular portion 61a and the second semicircular portion 61b. When viewed from the direction along the second axis L2, the first semicircular portion 61a on the inner circumferential surface of the second straight portion 61 overlaps with half the circumference of the inner circumferential surface of the first straight portion 51 in the accommodating hole 32. That is, the projection of the first semicircular portion 61a in the direction along the second axis L2 (first direction X1) overlaps with half the circumference of the inner circumferential surface of the first straight portion 51. In addition, the projection of the second semicircular portion 61b in the direction along the second axis L2 (first direction X1) is shifted with respect to the inner circumferential surface of the first straight portion 51 by the width W of the straight portion 61c.

[0040] On the inner peripheral surface of the second straight portion 61, both ends in the direction along the major axis D2 are defined as a first major axis end 71 and a second major axis end 72, respectively. The first major axis end 71 is included in the first semicircular portion 61a. The second major axis end 72 is included in the second semicircular portion 61b. The distance from the first major axis end 71 to the second major axis end 72 is equal to the major axis D2 of the second straight portion 61. When viewed from the direction along the second axis L2, the position of the first major axis end 71 coincides with the position of the inner peripheral surface of the first straight portion 51. That is, the projection of the first major axis end 71 in the direction along the second axis L2 overlaps with the inner peripheral surface of the first straight portion 51. Moreover, the projection of the second major axis end 72 in the direction along the second axis L2 is located on the outer peripheral side of the first straight portion 51. As a result, when viewed from the first direction X1, a portion of the circumferential direction of the first expanded diameter portion 52 in the receiving hole 32 is exposed through the introduction hole 41 (see FIGS. 3 and 5).

[0041] The operation of this embodiment will be described. When the electric wire with terminal 11 is attached to the housing 12, the electric wire with terminal 11 including the seal plug 23 is inserted in the first direction X1 into the accommodation hole 32 of the housing main body 30 through the introduction hole 41 of the seal plug attachment member 40. At this time, the seal plug 23 is deformed by the second straight portion 61 of the introduction hole 41 before being inserted into the accommodation hole 32. Here, the stage in which the seal plug 23 is deformed by being inserted into the introduction hole 41 is referred to as a preliminary deformation stage. In the preliminary deformation stage, the seal plug 23 is deformed so as to be mainly crushed in a direction along the minor diameter D3 of the second straight portion 61 in the introduction hole 41. Note that when the seal plug 23 is inserted into the introduction hole 41, the seal plug 23 first abuts against the second enlarged diameter portion 62 in the introduction hole 41 in the first direction X1. As a result, the seal plug 23 is deformed toward the inner periphery of the introduction hole 41 along the inclination of the second enlarged diameter portion 62.

[0042] After the preliminary deformation stage, the sealing plug 23 is inserted into the receiving hole 32 of the housing body 30 while maintaining the state in which it is deformed by the first straight portion 51. At this time, the sealing plug 23 is deformed by the first straight portion 51 of the receiving hole 32 so as to be mainly crushed in a direction perpendicular to the deformation direction in the preliminary deformation stage (a direction along the major axis D2 of the second straight portion 61). Note that, after the preliminary deformation stage, when the sealing plug 23 is inserted into the receiving hole 32, a part of the sealing plug 23 in the circumferential direction (a part corresponding to the second semicircular portion 61b) abuts against the first enlarged diameter portion 52 of the receiving hole 32 in the first direction X1. As a result, the sealing plug 23 is deformed toward the inner circumferential side of the receiving hole 32 along the inclination of the first enlarged diameter portion 52.

[0043] In this manner, the sealing plug 23 is inserted into the receiving hole 32 in a state in which it is deformed in advance by the introduction hole 41, and thus the sealing plug 23 can be inserted to an appropriate position in the first straight portion 51 of the receiving hole 32. The appropriate position of the sealing plug 23 is a position where the sealing property of the sealing plug 23 is ensured. When the sealing plug 23 is in the appropriate position, all of the lip portions 23a of the sealing plug 23 elastically adhere to the inner peripheral surface of the first straight portion 51. When the sealing plug 23 is in the appropriate position, for example, the entire length of the sealing plug 23 in the length direction of the electric wire 22 is located in the receiving hole 32. That is, when the sealing plug 23 is in the appropriate position, the sealing plug 23 is not located in the introduction hole 41 of the sealing plug attachment member 40.

[0044] The effects of this embodiment will be described. (1) The sealing plug mounting member 40 has an introduction hole 41 that is connected to the inlet end 33 of the accommodation hole 32. The introduction hole 41 is configured to deform the sealing plug 23 in advance before the sealing plug 23 is inserted into the accommodation hole 32 when the sealing plug 23 is inserted into the introduction hole 41 and the accommodation hole 32. According to this configuration, when the sealing plug 23 attached to the terminal-attached electric wire 11 is attached to the housing 12, the sealing plug 23 is deformed in advance when passing through the introduction hole 41, and then inserted into the accommodation hole 32 in the deformed state. This makes it possible to easily insert the sealing plug 23 to an appropriate position with respect to the accommodation hole 32. As a result, the sealing plug 23 is held in an appropriate position, which contributes to improving the sealing performance. In addition, the introduction hole 41 is provided in the sealing plug mounting member 40 that is separate from the housing main body 30 having the accommodation hole 32. Therefore, it is possible to improve the moldability of the accommodation hole 32 compared to a case in which the introduction hole 41 is integrally formed with the accommodation hole 32 in the housing main body 30.

[0045] (2) The accommodating hole 32 includes a first straight portion 51 whose cross-sectional shape is uniform in a direction along the first axis L1 of the accommodating hole 32. The cross-sectional shape of the first straight portion 51 is circular. The introduction hole 41 includes a second straight portion 61 whose cross-sectional shape is uniform in a direction along the second axis L2 of the introduction hole 41. The cross-sectional shape of the second straight portion 61 is an elongated hole shape having a minor axis D3 equal to the diameter D1 of the first straight portion 51 and a major axis D2 longer than the diameter D1 of the first straight portion 51. According to this configuration, before the sealing plug 23 is inserted into the accommodating hole 32, the second straight portion 61 of the introduction hole 41 can mainly deform the sealing plug 23 in a direction along the minor axis D3. Then, the sealing plug 23 is inserted into the accommodating hole 32 in a state where it is deformed in a direction along the minor axis D3, so that the sealing plug 23 can be more easily inserted to an appropriate position in the accommodating hole 32.

[0046] (3) The major diameter D2 of the second straight portion 61 is set to be equal to the outer diameter D4 of the sealing plug 23 when not attached to the housing 12. With this configuration, the force that deforms the sealing plug 23 in the direction along the major diameter D2 by the second straight portion 61 of the introduction hole 41 can be reduced. This makes it possible to reduce the load applied to the sealing plug 23 when inserting the sealing plug 23 into the second straight portion 61, which contributes to improving the assembly of the sealing plug 23.

[0047] (4) The first axis L1 of the accommodating hole 32 and the second axis L2 of the introduction hole 41 are parallel to each other. When viewed from the direction along the second axis L2 of the introduction hole 41, one end (first long diameter end 71) of the second straight portion 61 in the direction along the major diameter D2 coincides with the inner circumferential surface of the first straight portion 51. With this configuration, it is possible to concentrate the deformation of the sealing plug 23 when the sealing plug 23 is inserted into the first straight portion 51 of the accommodating hole 32 on only one side in the direction along the major diameter D2 (only the portion corresponding to the second semicircular portion 61b). This makes it possible to more easily insert the sealing plug 23 to the appropriate position in the accommodating hole 32.

[0048] (Other embodiments) The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

[0049] In the above embodiment, the first axis L1 of the accommodating hole 32 and the second axis L2 of the introduction hole 41 may be positioned on the same straight line. In other words, both the first major diameter end portion 71 and the second major diameter end portion 72 of the second straight portion 61 may be positioned outer circumferentially of the inner circumferential surface of the first straight portion 51 when viewed from the direction along the second axis L2.

[0050] In the above embodiment, the major diameter D2 of the second straight portion 61 may be set to be smaller than the outer diameter D4 of the sealing plug 23 when not attached to the housing 12. In addition, in the above embodiment, the major diameter D2 of the second straight portion 61 may be set to be larger than the outer diameter D4 of the sealing plug 23 when not attached to the housing 12.

[0051] In the above embodiment, the minor diameter D3 of the second straight portion 61 may be set to a dimension larger than the diameter D1 of the first straight portion 51 and smaller than the major diameter D2 of the second straight portion 61.

[0052] The elongated hole shape of the second straight portion 61 in the introduction hole 41 is not limited to the shape in the above embodiment and can be changed as appropriate. For example, the second straight portion 61 does not necessarily have to include the pair of straight portions 61c, and the shape of the second straight portion 61 viewed from the direction along the second axis L2 may be an ellipse that does not include the pair of straight portions 61c. In addition, the cross-sectional shape of the second straight portion 61 perpendicular to the second axis L2 is not limited to the elongated hole shape and can be changed as appropriate depending on the configuration of the sealing plug 23.

[0053] The shape of the introduction hole 41 is not limited to the above embodiment and can be changed as appropriate. For example, the introduction hole 41 may have a configuration in which the entire second axis L2 of the introduction hole 41 decreases in diameter from the first opening end 63 to the second opening end 64. In this case, the cross-sectional shape of the introduction hole 41 perpendicular to the second axis L2 may be circular.

[0054] The number of terminal-attached electric wires 11 having sealing plugs 23, and the number of accommodating holes 32 and introduction holes 41 corresponding to the terminal-attached electric wires 11 are not limited to those in the above embodiment, and can be changed as appropriate depending on the configuration of the connector 10.

[0055] The embodiments disclosed herein are illustrative in all respects, and the present invention is not limited to these examples. That is, the scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0056] 10 Connectors 11 Wire with terminal 12. Housing 21 Terminal 21a Seal plug fixing part 22 Electric wire 23 Sealing plug 23a Lip 30 Housing body 31 Mounting tube 32 Receiving hole 33 Inlet end 34 1st locked part 35 Second locked part 36 Wall 40 Sealing plug mounting parts 41 Introduction hole 42 First locking portion 43 Second locking part 51 First Straight Section 52 1st enlarged diameter section 61 Second Straight Section 61a First semicircular section 61b Second semicircle section 61c Straight section 62 Second enlarged diameter section 63 1st open end 64 2nd open end 71 First long diameter end 72 Second long diameter end D1 Diameter of the first straight section D2 Long diameter of the second straight section D3 Minor diameter of second straight section D4 Outside diameter of seal plug L1 First axis (axis of the receiving hole) L2 Second axis (axis of introduction hole) W: Width of straight part X1 1st direction X2 2nd direction

Claims

1. a housing having a receiving hole; A terminal accommodated in the housing; An electric wire connected to the terminal; a seal plug received in the receiving hole to close the receiving hole and through which the electric wire passes, The housing includes a housing main body having the receiving hole, and a seal plug attachment member attached to the housing main body, The sealing plug mounting member has an introduction hole communicating with an inlet end of the receiving hole, The introduction hole is configured to pre-deform the sealing plug at a stage before the sealing plug is inserted into the accommodating hole when the sealing plug is inserted into the introduction hole and the accommodating hole. connector.

2. the accommodating hole includes a first straight portion having a cross-sectional shape perpendicular to an axis of the accommodating hole that is uniform in a direction along the axis, The cross-sectional shape of the first straight portion is circular, the introduction hole includes a second straight portion having a cross-sectional shape perpendicular to an axis of the introduction hole that is uniform in a direction along the axis, The cross-sectional shape of the second straight portion is an elongated hole shape having a minor axis equal to a diameter of the first straight portion and a major axis longer than the diameter of the first straight portion. The connector of claim 1 .

3. The major axis of the second straight portion is set to be equal to an outer diameter of the sealing plug when the sealing plug is not attached to the housing. The connector according to claim 2.

4. The axis of the receiving hole and the axis of the introduction hole are parallel to each other, When viewed from a direction along the axis of the introduction hole, one end of the second straight portion in a direction along the major axis coincides with an inner circumferential surface of the first straight portion. The connector according to claim 2.

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