Connector

Abstract

Provided is a connector capable of improving the assemblability of a sealing plug. A connector (10) is provided with: a housing having a housing hole (32); a terminal housed in the housing; an electric wire connected to the terminal; and a sealing plug (23) which is housed in the housing hole (32) and closes the housing hole (32), and through which an electric wire passes. The housing is provided with a housing main body (30) and a sealing plug mounting member (40) mounted to the housing main body (30). The housing main body (30) has a housing hole (32). The sealing plug mounting member (40) has an introduction hole (41) connected to the inlet end (33) of the housing hole (32). The introduction hole (41) is configured such that, when the sealing plug (23) is inserted into the introduction hole (41) and the housing hole (32), the sealing plug (23) is deformed in advance before the sealing plug (23) is inserted into the housing hole (32).

Description

Technical Field

[0001] The present invention relates to a connector. Background Art

[0002] For example, the connector described in Patent Document 1 includes a housing, a terminal-equipped electric wire housed in the housing, and a sealing plug (a rubber plug in Patent Document 1) mounted on the outer periphery of the electric wire in the terminal-equipped electric wire. The sealing plug is housed in a cavity of the housing and seals the cavity. The sealing plug includes a plurality of lips (sealing portions in Patent Document 1) formed protruding from the outer periphery of the sealing plug. The lips are in close contact with the inner peripheral surface of the cavity, thereby ensuring the sealing of the cavity. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-197206 Summary of the invention Problems to be solved by the invention

[0004] In the above connector, sometimes a terminal wire with a larger wire diameter is generally used without changing the design of the housing. In this case, as the wire diameter increases, the outer diameter of the sealing plug mounted on the terminal wire also increases and becomes thicker, so there is a possibility that the sealing plug cannot enter the appropriate position relative to the cavity of the connector housing. When the sealing plug cannot enter the appropriate position relative to the cavity, for example, a portion of the lip of the sealing plug is not in the cavity. As a result, the sealing performance of the sealing plug may be deteriorated.

[0005] An object of the present invention is to provide a connector capable of improving the assemblability of a sealing plug. Solutions to Solve Problems

[0006] The connector of the present invention comprises: a shell having a storage hole; a terminal, which is stored in the shell; an electric wire connected to the terminal; and a sealing plug, which is stored in the storage hole and closes the storage hole, and the electric wire passes through the sealing plug. The shell comprises a shell body and a sealing plug assembly component assembled to the shell body, the shell body has the storage hole, and the sealing plug assembly component has an introduction hole connected to the entrance end of the storage hole, and the introduction hole is configured as follows: when the sealing plug is inserted into the introduction hole and the storage hole, the sealing plug is pre-deformed at a stage before the sealing plug is inserted into the storage hole. Effects of the Invention

[0007] According to the connector of the present invention, the assembling performance of the sealing plug can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a perspective view of a connector in one embodiment. Figure 2 It is a perspective view of the housing body in this embodiment. Figure 3 This is a side view showing a part of the housing in this embodiment in an enlarged manner. Figure 4 yes Figure 3 The 4-4 line section view in. Figure 5 yes Figure 3 The 5-5 line section view. Figure 6 It is a schematic diagram for explaining the relationship between the storage hole and the introduction hole in this embodiment. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Invention] First, embodiments of the present invention will be described by way of examples. The connector of the present invention, [1] It comprises: a shell having a storage hole; a terminal received in the shell; an electric wire connected to the terminal; and a sealing plug received in the storage hole to close the storage hole, and the electric wire passes through the sealing plug, the shell comprising a shell body and a sealing plug assembly member assembled to the shell body, the shell body having the storage hole, the sealing plug assembly member having an introduction hole connected to an entrance end of the storage hole, the introduction hole being configured such that when the sealing plug is inserted into the introduction hole and the storage hole, the sealing plug is pre-deformed at a stage before the sealing plug is inserted into the storage hole.

[0010] According to this configuration, when the sealing plug mounted on the terminal wire is mounted on the housing, the sealing plug is deformed in advance when passing through the introduction hole, and then inserted into the receiving hole in its deformed state. As a result, the sealing plug can be easily inserted into the receiving hole to a proper position. As a result, the sealing plug is kept in a proper position, which can help improve the sealing performance.

[0011] [2] In the above [1], the receiving hole may include a first straight portion, the cross-sectional shape of the first straight portion perpendicular to the axis of the receiving hole is the same in the direction along the axis, and the cross-sectional shape of the first straight portion is circular, and the introduction hole includes a second straight portion, the cross-sectional shape of the second straight portion perpendicular to the axis of the introduction hole is the same in the direction along the axis, and the cross-sectional shape of the second straight portion is a long hole shape having a short diameter equal to the diameter of the first straight portion and a long diameter 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 sealing plug can be deformed mainly in the direction along the minor diameter by the second straight portion of the introduction hole. Furthermore, by inserting the sealing plug into the receiving hole in a state in which the sealing plug is deformed in the direction along the minor diameter, the sealing plug can be inserted into an appropriate position of the receiving hole more easily.

[0013] [3] In the above [2], the major diameter of the second straight portion may be set to be equal to the outer diameter of the sealing plug when not mounted in the housing. According to this configuration, the force that deforms the sealing plug in the direction along the major diameter can be further reduced by the second straight portion of the introduction hole. The load applied to the sealing plug when inserting the sealing plug into the second straight portion can be suppressed to a small value, which can contribute to improving the assembly performance of the sealing plug.

[0014] [4] In the above [2] or [3], the axis of the storage hole and the axis of the introduction hole may be parallel to each other, and when viewed from the direction along the axis of the introduction hole, one end of the second straight portion along the direction of the major diameter is consistent with the inner circumferential surface of the first straight portion.

[0015] According to this configuration, the deformation of the sealing plug when the sealing plug is inserted into the first straight portion of the storage hole can be concentrated only on one side along the major diameter, thereby making it easier to insert the sealing plug into an appropriate position of the storage hole.

[0016] [Details of Embodiments of the Invention] The following is a specific example of the connector of the present invention with reference to the accompanying drawings. In each of the drawings, for the convenience of explanation, a part of the structure is sometimes enlarged or simplified. In addition, the size ratio of each part is sometimes different in each drawing. In addition, "parallel" or "orthogonal" in this specification not only includes the case of being strictly parallel or orthogonal, but also includes the case of being roughly parallel or orthogonal within the scope of the role and effect of this embodiment. In addition, the "cylindrical" used in the description of this specification is not only a cylindrical shape with a circumferential wall continuously formed throughout the entire circumference, but also includes a shape that combines multiple parts to form a cylindrical shape, such as a C-shaped shape with a notch in a part of the circumference. 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 only used to distinguish objects, and do not sort the objects. In addition, the present invention is not limited to these examples, but is shown by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims.

[0017] (Connector 10) Figure 1The connector 10 shown is connected to an unillustrated electrical device mounted on a vehicle. The connector 10 includes a terminal wire 11 and a housing 12 for holding the terminal wire 11. The housing 12 is engaged with an unillustrated counterpart connector provided on the electrical 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] (Wire with terminal 11) The connector 10 includes, for example, a plurality of terminal-equipped electric wires 11. The terminal-equipped electric wires 11 include terminals 21, electric wires 22, and sealing plugs 23. The terminals 21 are fixed to the ends in the longitudinal direction by tightening or the like. The terminals 21 are accommodated in the housing 12. When the connector 10 is engaged with the mating connector, the terminals 21 are connected to mating terminals (not shown) provided on the mating connector.

[0019] (Sealing plug 23) The sealing plug 23 is a rubber plug made of, for example, silicone rubber. The sealing plug 23 is substantially cylindrical. The sealing plug 23 is mounted on the outer periphery of the electric wire 22. That is, the electric wire 22 passes through the hole inside the sealing plug 23. In addition, one end of the sealing plug 23 in the longitudinal direction is fixed to the outer peripheral surface of the electric wire 22 by a sealing plug fixing portion 21a which is a part of the terminal 21.

[0020] The sealing plug 23 has, for example, a plurality of lips 23a protruding from the outer peripheral surface of the sealing plug 23. The plurality of lips 23a are arranged side by side at intervals in the longitudinal direction of the electric wire 22. Each lip 23a is formed over the entire circumference of the sealing plug 23.

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

[0022] like Figure 2 and Figure 4 As shown, the shell body 30 has, for example, a mounting cylinder 31. The mounting cylinder 31 is in the shape of a cylinder extending in the second direction X2 (opening in the second direction X2). The mounting cylinder 31 is in the shape of a cylinder, for example. A receiving hole 32 for receiving the sealing plug 23 is formed on the inner circumferential surface of the mounting cylinder 31. The receiving hole 32 has an entrance end 33 at the top end of the receiving hole 32 in the second direction X2. The terminal-attached electric wire 11 including the sealing plug 23 is inserted into the receiving hole 32 from the entrance end 33. The sealing plug 23 is received in the receiving hole 32 and closes the receiving hole 32. In addition, Figure 4 and Figure 5In the figure, for convenience of description, only the outer shape of the sealing plug 23 is shown in the electric wire with terminal 11, and illustration of the terminal 21 and the electric wire 22 is omitted.

[0023] (Sealing plug assembly member 40) like Figure 3 and Figure 4 As shown, the sealing plug assembly member 40 has an introduction hole 41 connected to the inlet end 33 of the receiving hole 32 in the housing body 30. The introduction hole 41 is adjacent to the receiving hole 32 of the housing body 30. That is, the receiving hole 32 and the introduction hole 41 are configured so that the internal spaces thereof are connected to each other.

[0024] like Figure 2 As shown in FIG. 1 , a plurality of mounting tubes 31 and receiving holes 32 are provided in the housing body 30. The housing body 30 of this embodiment has, for example, four mounting tubes 31. That is, the housing body 30 of this embodiment has four receiving holes 32. Figure 1 As shown, the housing 12 is provided with a plurality of sealing plug assembly members 40, for example. The housing 12 of this embodiment is provided with, for example, two upper and lower sealing plug assembly members 40. The two sealing plug assembly members 40 are, for example, in the same shape. Two introduction holes 41 are provided in each of the two sealing plug assembly members 40. That is, a total of four introduction holes 41 are respectively arranged corresponding to the four storage holes 32 of the housing body 30.

[0025] like Figure 3 As shown in FIG. 4 , the sealing plug assembly member 40 includes, for example, a first locking portion 42 and a second locking portion 43 for fixing the sealing plug assembly member 40 to the housing body 30. Figure 2 and Figure 3 As shown, the housing body 30 has a first locked portion 34 and a second locked portion 35 , the first locking portion 42 of the sealing plug assembly member 40 is locked to the first locked portion 34 , and the second locking portion 43 of the sealing plug assembly member 40 is locked to the second locked portion 35 .

[0026] like Figure 2 As shown in FIG. 1 , both the first locked portion 34 and the second locked portion 35 are provided on the periphery of each mounting tube portion 31. Specifically, the first locked portion 34 protrudes from the outer peripheral surface of the mounting tube portion 31. When the sealing plug assembly member 40 is assembled to the housing body 30, the first locking portion 42 of the sealing plug assembly member 40 is configured to be hooked on the first locked portion 34 toward the second direction X2.

[0027] The second locked portion 35 protrudes from the side of the wall portion 36, and the wall portion 36 extends from the outer peripheral side of the mounting tube portion 31. When the sealing plug assembly member 40 is assembled to the housing body 30, the second locking portion 43 of the sealing plug assembly member 40 is configured to be hooked on the second locked portion 35 toward the second direction X2.

[0028] When the terminal-attached electric wire 11 is assembled to the housing 12, the terminal 21 located at the top end of the terminal-attached electric wire 11 is inserted into the receiving hole 32 through the introduction hole 41 of the sealing plug assembly member 40. At this time, the terminal 21 is inserted along the first direction X1. In a state where the terminal 21 is accommodated inside the housing body 30, the entire sealing plug 23 is accommodated in the receiving hole 32. In addition, the electric wire 22 is led out of the housing 12 toward the second direction X2 through the receiving hole 32.

[0029] (Detailed Structure of Storage Hole 32) Hereinafter, the detailed shape of the storage hole 32 of the case body 30 will be described. In addition, the four storage holes 32 located at the top, bottom, left and right have the same shape as each other, for example.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the storage hole 32 has a first axis L1 parallel to the second direction X2. The storage hole 32 is open in the second direction X2. The storage hole 32 has an entrance end 33 at the top of the storage hole 32 in the second direction X2. The terminal-attached electric wire 11 including the sealing plug 23 is inserted into the storage hole 32 from the entrance end 33. The cross-sectional shape of the storage hole 32 orthogonal to the first axis L1 is, for example, a circle centered on the first axis L1 throughout the axial direction of the storage hole 32.

[0031] The storage 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. In addition, the cross-sectional shape of the first straight portion 51 perpendicular to the first axis L1 is the same 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 storage 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 over the entire circumference of the storage hole 32. The first enlarged diameter portion 52 is in an inclined shape that expands from one end of the axial direction of the first straight portion 51 toward the inlet end 33. The cross-sectional shape of the first enlarged diameter portion 52 that is orthogonal to the first axis L1 is, for example, circular. The end of the first enlarged diameter portion 52 on the side opposite to the first straight portion 51 forms the inlet end 33 of the storage 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 Structure of Introduction Hole 41) The detailed shape of the introduction hole 41 of the sealing plug assembly member 40 is described below. In addition, each introduction hole 41 has, for example, the same shape as each other. The introduction hole 41 is 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 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 storage hole 32. The second axis L2 of the introduction hole 41 is not set to be on the same straight line with the first axis L1 of the storage hole 32.

[0035] The introduction hole 41 includes a second straight portion 61 and a second enlarged 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 as two end portions in the direction along the second axis L2. When the sealing plug assembly member 40 is assembled to the housing body 30, the second opening end 64 is opposite to the entrance end 33 of the storage hole 32. The first opening end 63 serves as an entrance when the terminal-attached electric wire 11 including the sealing plug 23 is inserted into the introduction hole 41. The second diameter-enlarged portion 62 of the introduction hole 41 is provided between the second straight portion 61 and the first opening end 63. The second diameter-enlarged portion 62 is in an inclined shape that expands in diameter from one end in the axial direction of the second straight portion 61 toward the first opening end 63. In the introduction hole 41 of the present embodiment, the opening areas (areas on a plane orthogonal to the second axis L2) of each of the first opening end 63 and the second opening end 64 are set larger than the cross-sectional area of ​​the storage hole 32.

[0037] exist Figure 6 In FIG. 1 , the shape of the first straight portion 51 of the receiving hole 32 and the shape of the second straight portion 61 of the introduction hole 41 as viewed from the axial direction are schematically shown by solid lines. Figure 6 In FIG. 1 , the outer shape of the sealing plug 23 when viewed in the axial direction (the outer shape of the lip portion 23 a ) when not mounted in the housing 12 is schematically shown by a two-dot chain line.

[0038] like Figure 6As shown, the cross-sectional shape of the second straight portion 61 perpendicular to the second axis L2 is a long hole shape having a long diameter D2 and a short diameter D3 perpendicular to each other. The long diameter D2 is set to be longer than the diameter D1 of the first straight portion 51. The short diameter D3 is set to be equal to the diameter D1 of the first straight portion 51. The long diameter 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 assembled to the housing 12. In addition, the outer diameter D4 of the sealing plug 23 is the diameter of the top (outermost peripheral portion) of the lip portion 23a.

[0039] An example of the shape of the second straight portion 61 viewed from the direction along the second axis L2 is described below. When viewed from the direction along the second axis L2, the inner circumferential 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 shapes having mutually equal radii. The first semicircular portion 61a and the second semicircular portion 61b are shapes that are reversed 180° with the second axis L2 as the center. The radii of the first semicircular portion 61a and the second semicircular portion 61b are set to be equal to the radius (half of the diameter D1) of the first straight portion 51 of the storage 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 of the inner circumferential surface of the first straight portion 51 of the storage hole 32. That is, the projection of the first semicircular portion 61a in the direction along the second axis L2 (the first direction X1) overlaps with half 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 (the first direction X1) is offset from the inner circumferential surface of the first straight portion 51 by the width W of the straight portion 61c.

[0040] On the inner circumferential surface of the second straight portion 61, the two ends in the direction along the major diameter D2 are respectively referred to as the first major diameter end 71 and the second major diameter end 72. The first major diameter end 71 is included in the first semicircular portion 61a. The second major diameter end 72 is included in the second semicircular portion 61b. The distance from the first major diameter end 71 to the second major diameter end 72 is equal to the major diameter D2 of the second straight portion 61. When viewed from the direction along the second axis L2, the position of the first major diameter end 71 coincides with the position of the inner circumferential surface of the first straight portion 51. That is, the projection of the first major diameter end 71 in the direction along the second axis L2 overlaps with the inner circumferential surface of the first straight portion 51. In addition, the projection of the second major diameter end 72 in the direction along the second axis L2 is located on the outer circumferential 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 enlarged diameter portion 52 of the storage hole 32 is exposed through the introduction hole 41 (refer to Figure 3 and Figure 5 ).

[0041] The operation of this embodiment will be described. When the terminal-attached electric wire 11 is assembled to the housing 12, the terminal-attached electric wire 11 including the sealing plug 23 is inserted into the storage hole 32 of the housing body 30 through the introduction hole 41 of the sealing plug assembly member 40 toward the first direction X1. At this time, the sealing plug 23 is deformed by the second straight portion 61 of the introduction hole 41 at the stage before being inserted into the storage hole 32. Here, the stage in which the sealing plug 23 is deformed by being inserted into the introduction hole 41 is referred to as the preliminary deformation stage. In the preliminary deformation stage, the sealing plug 23 is deformed in a manner that is mainly flattened in the direction of the short diameter D3 of the second straight portion 61 of the introduction hole 41. In addition, when the sealing plug 23 is inserted into the introduction hole 41, the sealing plug 23 first abuts against the second enlarged diameter portion 62 of the introduction hole 41 in the first direction X1. As a result, the sealing plug 23 is deformed toward the inner circumference of the introduction hole 41 along the inclination of the second enlarged diameter portion 62.

[0042] After the above-mentioned preliminary deformation stage, the sealing plug 23 is inserted into the receiving hole 32 of the housing body 30 while maintaining the state deformed by the first straight portion 51. At this time, the sealing plug 23 is deformed in a manner of being flattened by the first straight portion 51 of the receiving hole 32 mainly in a direction orthogonal to the deformation direction in the preliminary deformation stage (in the direction of the major diameter D2 of the second straight portion 61). In addition, after the preliminary deformation stage, when the sealing plug 23 is inserted into the receiving hole 32, a circumferential portion of the sealing plug 23 (a portion 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 circumference of the receiving hole 32 along the inclination of the first enlarged diameter portion 52.

[0043] In this way, the sealing plug 23 can be inserted into the storage hole 32 in a state where it is pre-deformed by the introduction hole 41, so that the sealing plug 23 can be inserted into the appropriate position in the first straight portion 51 of the storage hole 32. The appropriate position of the sealing plug 23 is a position that ensures the sealing performance of the sealing plug 23. When the sealing plug 23 is located at the appropriate position, all of the multiple lip portions 23a of the sealing plug 23 are elastically in close contact with the inner peripheral surface of the first straight portion 51. In addition, when the sealing plug 23 is located at the appropriate position, for example, the entire length of the sealing plug 23 in the longitudinal direction of the electric wire 22 is located in the storage hole 32. That is, when the sealing plug 23 is located at the appropriate position, the sealing plug 23 is not located in the introduction hole 41 of the sealing plug assembly member 40.

[0044] The effects of this embodiment will be described. (1) The sealing plug assembly member 40 has an introduction hole 41 connected to the entrance end 33 of the storage hole 32. The introduction hole 41 is configured such that when the sealing plug 23 is inserted into the introduction hole 41 and the storage hole 32, the sealing plug 23 is pre-deformed at a stage before the sealing plug 23 is inserted into the storage hole 32. According to this configuration, when the sealing plug 23 assembled to the terminal-equipped electric wire 11 is assembled to the housing 12, the sealing plug 23 is pre-deformed when passing through the introduction hole 41, and then inserted into the storage hole 32 in its deformed state. As a result, the sealing plug 23 can be easily inserted into the storage hole 32 at an appropriate position. As a result, by keeping the sealing plug 23 at an appropriate position, it can contribute to the improvement of the sealing performance. In addition, the introduction hole 41 is provided in the sealing plug assembly member 40 which is separate from the housing body 30 having the storage hole 32. Therefore, compared with the case where the introduction hole 41 and the storage hole 32 are formed integrally in the housing body 30, the formability of the storage hole 32 can be improved.

[0045] (2) The storage hole 32 includes a first straight portion 51, and the cross-sectional shape of the first straight portion 51 is uniform in the direction along the first axis L1 of the storage hole 32. The cross-sectional shape of the first straight portion 51 is circular. The introduction hole 41 includes a second straight portion 61, and the cross-sectional shape of the second straight portion 61 is uniform in the direction along the second axis L2 of the introduction hole 41. The cross-sectional shape of the second straight portion 61 is a long hole shape having a short diameter D3 equal to the diameter D1 of the first straight portion 51 and a long diameter D2 longer than the diameter D1 of the first straight portion 51. According to this configuration, at the stage before the sealing plug 23 is inserted into the storage hole 32, the sealing plug 23 can be deformed mainly in the direction along the short diameter D3 through the second straight portion 61 of the introduction hole 41. In addition, by inserting the sealing plug 23 into the storage hole 32 in a state deformed in the direction along the short diameter D3, it is easier to insert the sealing plug 23 into the appropriate position of the storage 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 assembled to the housing 12. According to this configuration, the force that causes the sealing plug 23 to deform in the direction along the major diameter D2 can be further reduced by the second straight portion 61 of the introduction hole 41. The load applied to the sealing plug 23 when the sealing plug 23 is inserted into the second straight portion 61 can be suppressed to a small value, and as a result, it can contribute to improving the assembly performance of the sealing plug 23.

[0047] (4) The first axis L1 of the storage hole 32 and the second axis L2 of the introduction hole 41 are parallel to each other. Furthermore, when viewed from the direction along the second axis L2 of the introduction hole 41, one end portion (the first long-diameter end portion 71) of the second straight portion 61 in the direction along the long diameter D2 is consistent with the inner circumferential surface of the first straight portion 51. According to this structure, when the sealing plug 23 is inserted into the first straight portion 51 of the storage hole 32, the deformation of the sealing plug 23 is concentrated only on one side in the direction along the long diameter D2 (only the portion corresponding to the second semicircular portion 61b). As a result, it is easier to insert the sealing plug 23 into the appropriate position of the storage hole 32.

[0048] (Other embodiments) The above-mentioned embodiment can be implemented with the following modifications. The above-mentioned embodiment and the following modifications can be implemented in combination with each other within the scope of no technical contradiction.

[0049] In the above embodiment, the first axis L1 of the storage hole 32 and the second axis L2 of the introduction hole 41 may be located on the same straight line. That is, when viewed from the direction along the second axis L2, both the first major-diameter end 71 and the second major-diameter end 72 of the second straight portion 61 may be located on the outer peripheral side of the inner peripheral surface of the first straight portion 51.

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

[0051] In the above embodiment, the short 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 long diameter D2 of the second straight portion 61 .

[0052] The long hole shape of the second straight portion 61 of the introduction hole 41 is not limited to the shape of the above-mentioned embodiment, and can be appropriately changed. For example, the second straight portion 61 does not necessarily include a pair of straight portions 61c, and the shape of the second straight portion 61 viewed from the direction along the second axis L2 may also be an elliptical shape that does not include a 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 long hole shape, and can be appropriately changed according to the configuration of the sealing plug 23.

[0053] The shape of the introduction hole 41 is not limited to the above-mentioned embodiment and can be changed appropriately. For example, the entire second axis L2 of the introduction hole 41 can also be a structure with a reduced 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 orthogonal to the second axis L2 can also be circular.

[0054] The number of the terminal-attached electric wires 11 having the sealing plugs 23 and the number of the storage holes 32 and the introduction holes 41 corresponding to the terminal-attached electric wires 11 are not limited to the above-described embodiment, and can be appropriately changed according to the configuration of the connector 10 .

[0055] The embodiments disclosed herein are illustrative in all aspects, and the present invention is not limited to these illustrative embodiments. That is, the scope of the present invention is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. Description of Reference Numerals

[0056] 10 Connectors 11 Wire with terminal 12 Housing 21 terminals 21a Sealing plug fixing part 22 Wire 23 sealing plug 23a Lips 30 Shell body 31 Install the barrel 32 Storage holes 33 Entrance 34 1st stopped portion 35 The second stopped portion 36 Wall 40 Sealing plug assembly components 41 Lead-in hole 42 1st stopper 43 second stopper 51 1st straight part 52 1st expansion part 61 2nd straight part 61a The first semicircle 61b The second semicircle 61c Straight line 62 2nd expansion part 63 1st opening end 64 2nd opening end 71 1st major diameter end 72 2nd major diameter end D1 Diameter of the first straight part D2 The major diameter of the second straight part D3 Short diameter of the second straight part D4 outer diameter of sealing plug L1 1st axis (axis of storage hole) L2 Second axis (axis of lead-in hole) W Width of the straight line X1 1st direction X2 2nd direction

Claims

1. A connector having: A housing having a receiving hole; A terminal, received in the housing; an electric wire connected to the terminal; and a sealing plug received in the receiving hole to close the receiving hole, and the electric wire passes through the sealing plug, The housing includes a housing body and a sealing plug assembly member assembled to the housing body, wherein the housing body has the housing hole. The sealing plug assembly member has an introduction hole connected to the inlet end of the receiving hole. The introduction hole is configured such that, when the sealing plug is inserted into the introduction hole and the receiving hole, the sealing plug is deformed in advance at a stage before the sealing plug is inserted into the receiving hole.

2. The connector according to claim 1, wherein: The receiving hole includes a first straight portion, and a cross-sectional shape of the first straight portion perpendicular to the axis of the receiving hole is the same 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, and a cross-sectional shape of the second straight portion perpendicular to the axis of the introduction hole is uniform in a direction along the axis. The cross-sectional shape of the second straight portion is a long hole shape having a short diameter equal to the diameter of the first straight portion and a long diameter longer than the diameter of the first straight portion.

3. The connector according to claim 2, wherein: The major diameter of the second straight portion is set to be equal to an outer diameter of the sealing plug in a state where the sealing plug is not mounted in the housing.

4. The connector according to claim 2, wherein: 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 diameter coincides with an inner peripheral surface of the first straight portion.

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