Cover unit and connector

Abstract

To provide a cover unit and a connector that enable a simplified configuration and improved ease of assembly. [Solution] The cover unit (40) includes a columnar rubber stopper (70) that can be press-fitted into the communication hole of the connector housing, and a plate-like cover (60) that has a fixing hole (64) and can be fixed to the connector housing. The rubber stopper (70) includes a rubber stopper main body (71), a first large diameter portion (72) that abuts against a first main surface (65) of the cover (60) in an assembled state where the rubber stopper (70) is assembled into the fixing hole (64), a fixing shaft portion (73) that fits into the fixing hole (64) in the assembled state, a second large diameter portion (74) that protrudes in a direction intersecting the press-fitting axis with a size that allows it to pass through the fixing hole (64) by its own elastic deformation and that sandwiches the cover (60) along the press-fitting axis together with the first large diameter portion (72) in the assembled state, and a temporary holding shaft portion (75) that extends from the second large diameter portion (74) and temporarily holds the rubber stopper (70) relative to the cover (60) so that the rubber stopper (70) does not fall over in a temporarily assembled state where the rubber stopper (70) is inserted into the fixing hole (64).

Description

[Technical Field]

[0001] The present disclosure relates to a cover unit and a connector. [Background technology]

[0002] Conventionally, there is a connector that allows voltage detection from the outside through a communicating hole (see, for example, Patent Document 1). This connector includes a connector housing with a communicating hole and terminal fittings housed inside the connector housing, and voltage detection from the outside is possible when a probe of a voltage detector comes into contact with the terminal fittings through the communicating hole. This connector also includes a cover unit. The cover unit includes a rubber stopper that can be press-fitted into the communicating hole, a plate-shaped cover having a fixing hole for fixing the rubber stopper, and a rubber stopper holder that is fitted with the rubber stopper and is attached to the fixing hole of the cover. The cover unit is fixed to the connector housing, and the rubber stopper is press-fitted into the communicating hole. When the cover unit is removed from the connector housing, voltage detection from the outside through the communicating hole becomes possible. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-225055 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the connector described above requires a rubber stopper holder for the cover unit. Furthermore, the assembly process for attaching the rubber stopper to the rubber stopper holder is difficult. Specifically, the process for attaching the rubber stopper to the rubber stopper holder is complicated, and the assembly process must be performed manually.

[0005] An object of the present disclosure is to provide a cover unit and a connector that enable a simplified configuration and improved ease of assembly. [Means for solving the problem]

[0006] The cover unit of the present disclosure is a cover unit including: a columnar rubber stopper that can be press-fitted into a communication hole of a connector housing along a press-fitting axis; and a plate-like cover that has a fixing hole for fixing the rubber stopper and can be fixed to the connector housing, wherein the rubber stopper includes a rubber stopper main body that can be press-fitted into the communication hole from a tip end thereof; a first large diameter portion that is provided at a base end of the rubber stopper main body and protrudes in a direction intersecting the press-fitting axis, and that abuts against a first main surface of the cover when the rubber stopper is assembled in the fixing hole; and The cover has a fixed shaft portion that extends in the opposite direction from the rubber stopper main body portion and fits into the fixing hole in the assembled state; a second large diameter portion that is provided at the tip of the fixed shaft portion and protrudes in a direction intersecting the press-fitting axis to a size that allows it to pass through the fixing hole by elastic deformation of itself, and in the assembled state, sandwiches the cover along the press-fitting axis together with the first large diameter portion; and a temporary holding shaft portion that extends from the second large diameter portion in the opposite direction from the fixed shaft portion and can temporarily hold the rubber stopper so that it does not fall over relative to the cover in the temporarily assembled state where it is inserted into the fixing hole. [Effects of the Invention]

[0007] The cover unit and connector of the present disclosure can simplify the configuration and improve the ease of assembly. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a connector according to one embodiment. [Figure 2] FIG. 2 is an exploded perspective view of a connector according to one embodiment. [Figure 3] FIG. 3 is a cross-sectional view of a connector according to one embodiment. [Figure 4] FIG. 4 is a partial cross-sectional view showing a manufacturing process of the cover unit according to one embodiment. [Figure 5]FIG. 5 is a partial cross-sectional view showing a manufacturing process of the cover unit according to one embodiment. [Figure 6] FIG. 6 is a partial cross-sectional view showing a manufacturing process of the cover unit according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The cover unit of the present disclosure comprises: [1] A cover unit comprising: a columnar rubber stopper that can be press-fitted into a communication hole of a connector housing along a press-fitting axis; and a plate-shaped cover that has a fixing hole for fixing the rubber stopper and can be fixed to the connector housing, wherein the rubber stopper comprises a rubber stopper main body that can be press-fitted into the communication hole from a tip end thereof; a first large diameter portion that is provided at a base end of the rubber stopper main body and protrudes in a direction intersecting the press-fitting axis, and that abuts against a first main surface of the cover when the rubber stopper is assembled into the fixing hole; and a rubber stopper body that extends from the first large diameter portion to the first large diameter portion. a fixed shaft portion that extends in the opposite direction to the first large diameter portion and fits into the fixing hole in the assembled state; a second large diameter portion that is provided at the tip of the fixed shaft portion and protrudes in a direction intersecting the press-fitting axis to a size that allows it to pass through the fixing hole by elastic deformation of itself, and that in the assembled state sandwiches the cover along the press-fitting axis together with the first large diameter portion; and a temporary holding shaft portion that extends from the second large diameter portion in the opposite direction to the fixed shaft portion and is capable of temporarily holding the rubber stopper so that it does not fall over relative to the cover in the temporarily assembled state where it is inserted into the fixing hole.

[0010] According to this configuration, when the second large-diameter portion passes through the fixing hole, the fixing shaft portion fits into the fixing hole and the first large-diameter portion and the second large-diameter portion sandwich the cover, thereby securing the rubber stopper to the cover. Therefore, the configuration can be simplified compared to, for example, a configuration including a separate rubber stopper holder for securing the rubber stopper to the cover. Furthermore, the rubber stopper has a temporary holding shaft portion extending from the second large-diameter portion in the opposite direction to the fixing shaft portion. The temporary holding shaft portion temporarily holds the rubber stopper so that it does not fall over relative to the cover in a temporarily assembled state where it is inserted into the fixing hole, thereby improving the ease of assembly to the cover. For example, the rubber stopper can be easily assembled to the cover using a first automatic machine that positions the rubber stopper so that the temporary holding shaft portion fits into the fixing hole, and a second automatic machine that pushes the rubber stopper from the temporarily assembled state where the temporary holding shaft portion is inserted into the fixing hole to secure it to the assembled state.

[0011] [2] In the above [1], the fixing hole may have an enlarged diameter hole portion whose diameter gradually increases toward the first main surface, and the second large diameter portion may have an inclined portion that is inclined so as to come into surface contact with the enlarged diameter hole portion in the temporary assembled state.

[0012] According to this configuration, the fixing hole has an enlarged diameter portion whose diameter gradually increases toward the first main surface, making it easier to insert the temporary holding shaft of the rubber stopper. The second large diameter portion has an inclined portion that is inclined to come into surface contact with the enlarged diameter portion of the fixing hole in a temporary assembled state where the temporary holding shaft is inserted into the fixing hole, making it difficult for the rubber stopper to tip over relative to the cover in the temporary assembled state. This improves the ease of assembling the rubber stopper to the cover.

[0013] [3] In the above [1] or [2], the base end of the rubber stopper main body may have a main body enlarged diameter portion whose diameter gradually increases toward the first large diameter portion. According to this configuration, the base end of the rubber stopper main body has a main body enlarged diameter portion whose diameter gradually increases toward the first large diameter portion, thereby preventing the rubber stopper from bending when, for example, pushing the rubber stopper in from a temporary assembled state in which the temporary holding shaft portion is inserted into the fixing hole.

[0014] [4] In any one of [1] to [3] above, the rubber stopper main body portion has a main body shaft portion and a lip portion that protrudes radially outward from the main body shaft portion so as to be able to press into contact with the communicating hole, and the diameter of the temporary holding shaft portion may be set to be equal to or greater than the diameter of the main body shaft portion.

[0015] According to this configuration, the diameter of the temporary holding shaft portion is set to be greater than or equal to the diameter of the main body shaft portion of the rubber stopper main body portion, making it less likely for the rubber stopper to fall over relative to the cover in the temporary assembly state compared to when it is set to be less than the diameter of the main body shaft portion, for example.

[0016] [5] In any one of the above [1] to [4], the rubber stopper may be a solid body. According to this configuration, because the rubber stopper is a solid body, it is possible to prevent the rubber stopper from bending when, for example, the rubber stopper is pushed in from a temporary assembled state in which the temporary holding shaft is inserted into the fixing hole. That is, for example, in a configuration in which the rubber stopper has an internal gap, the rubber stopper is prone to bending when the rubber stopper is pushed in from a temporary assembled state in which the temporary holding shaft is inserted into the fixing hole, but if the rubber stopper is a solid body, this can be prevented.

[0017] The connector of the present disclosure comprises: [6] A cover unit according to any one of [1] to [5] above, the connector housing, and a terminal fitting accommodated inside the connector housing and enabling voltage detection from the outside through the communication hole.

[0018] According to this configuration, in a connector that allows voltage detection from the outside through the communication hole, the configuration of the cover unit can be simplified and the rubber plug can be easily attached to the cover.

[0019] [Details of the embodiments of the present disclosure] Specific examples of connectors according to the present disclosure will be described below with reference to the drawings. In each drawing, for the sake of convenience, some components may be exaggerated or simplified. Furthermore, the dimensional proportions of each part may differ from one drawing to another.

[0020] As used herein, the term "cylindrical" does not only refer to a cylindrical object with a continuous peripheral wall formed around the entire circumference, but also includes a cylindrical object formed by combining multiple components or a C-shape with a partial circumferential notch. The outer peripheral shape of a "cylindrical" object includes, but is not limited to, a circle, an ellipse, and a polygon with sharp or rounded corners. A "cylindrical" object has a through hole in plan view, and includes objects in which the outer peripheral shape and the inner peripheral shape of the through hole are the same or different. A "cylindrical" object includes objects having a predetermined length extending along the axial direction of the central axis passing through the center of the through hole, regardless of length. In this specification, "facing" refers to surfaces or components facing each other, and includes not only cases where the surfaces are completely facing each other, but also cases where the surfaces are partially facing each other. Furthermore, "facing" in this specification includes both cases where a separate component is interposed between two parts and cases where there is no interposition between the two parts. Furthermore, terms such as "first," "second," and "third" in this specification are used merely to distinguish between objects and do not rank the objects. The present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0021] (Configuration of Connector 10) 1 and 2, the connector 10 includes a connector housing 20, a metal shell 30, and a cover unit 40. Furthermore, as shown in Fig. 3, the connector 10 includes a terminal fitting 50. The connector 10 is installed in a vehicle (not shown), such as a hybrid vehicle or an electric vehicle. Specifically, the connector 10 is attached to the case of an in-vehicle device, such as an inverter, installed in the vehicle, and allows a large current to flow through it.

[0022] Each drawing shows a first axis X, a second axis Y perpendicular to the first axis X, and a third axis Z as a press-fit axis perpendicular to the first axis X and the second axis Y. Also shown in each drawing are an upward direction Z1, which is one direction along the third axis Z, and a downward direction Z2, which is the opposite direction to the upward direction Z1.

[0023] (Configuration of connector housing 20) The connector housing 20 is made of a resin material. As shown in FIGS. 2 and 3 , the connector housing 20 has a first cylindrical portion 21 extending in the upward direction Z1 along the third axis Z, and a second cylindrical portion 22 bending from the upper end of the first cylindrical portion 21 and extending along the first axis X. The connector housing 20 also has a communication hole 23 penetrating along the third axis Z to provide communication between the inside and outside of the connector housing 20. In this embodiment, the communication hole 23 is formed by the inner surface of a cylindrical portion 24 protruding in the upward direction Z1 from the connector housing 20. As shown in FIG. 2 , in this embodiment, two communication holes 23 and two cylindrical portions 24 are arranged side by side along the second axis Y. In addition, as shown in FIG. 3 , a terminal fitting 50 is accommodated and held inside the connector housing 20. The terminal fitting 50 is positioned so that voltage detection from the outside is possible through the communication hole 23. That is, the terminal fitting 50 is positioned so as to pass through the communication hole 23 in the downward direction Z2. In FIG. 3, the terminal fitting 50 is shown schematically as a single L-shaped member, but is not limited to this and may, of course, be configured by combining two or more metal members.

[0024] 2, two first nuts 25 are embedded in the connector housing 20. The first nuts 25 are arranged on both sides of the connector housing 20. The first nuts 25 are formed in a cylindrical shape and have an internal thread groove that opens in the upward direction Z1 of the connector housing 20.

[0025] In addition, one second nut 26 is embedded in the connector housing 20. The second nut 26 is disposed at the rear end of the connector housing 20. Like the first nut 25, the second nut 26 is formed in a cylindrical shape and has an internal thread groove that opens in the upward direction Z1 of the connector housing 20.

[0026] (Configuration of metal shell 30) The metal shell 30 has a top wall 31 that covers the top surface of the connector housing 20, side walls 32 that cover both side surfaces of the connector housing 20, and a rear wall 33 that covers the rear end surface of the connector housing 20. The top wall 31 has an exposure hole 34 that exposes the tubular portion 24 of the connector housing 20 in the upward direction Z1. In this embodiment, the exposure hole 34 is an elongated hole that includes the two tubular portions 24 when viewed from the upward direction Z1. The top wall 31 also has a recess 35 at a position corresponding to the first nut 25, and a first through hole 36 at the bottom of the recess 35. The top wall 31 also has a second through hole 37 at a position corresponding to the second nut 26.

[0027] The metal shell 30 is fixed to the connector housing 20 by a first screw 38 that passes through the first through hole 36 and is screwed into the first nut 25. The metal shell 30 suppresses electromagnetic noise from being emitted from the connector 10 to the outside when a large current flows through the terminal fitting 50 (see FIG. 3).

[0028] (Configuration of cover unit 40) As shown in FIGS. 1 to 3, the cover unit 40 includes a cover 60 that can be fixed to the connector housing 20, and two rubber plugs 70 that are assembled to the cover 60.

[0029] (Cover 60 configuration) The cover 60 is made of a metal plate. 2, the cover 60 has a pair of bent pieces 61 that can engage with the inner surface of the recess 35 of the metal shell 30. The cover 60 also has cover through-holes 62 at positions corresponding to the second through-holes 37. With the bent pieces 61 engaged with the inner surface of the recess 35, the cover 60 is fixed to the connector housing 20 and the metal shell 30 by second screws 63 that pass through the cover through-holes 62 and the second through-holes 37 and are screwed into the second nuts 26.

[0030] The cover 60 also has fixing holes 64 for fixing the rubber stoppers 70 at positions corresponding to the communication holes 23 of the connector housing 20. In this embodiment, two fixing holes 64 are provided, one at a position corresponding to each of the two communication holes 23.

[0031] As shown in FIG. 3, the fixing hole 64 penetrates from the first main surface 65, which is the surface facing the upper wall 31 of the metal shell 30 and faces downward Z2, to the second main surface 66, which is the surface opposite the first main surface 65 and faces upward Z1.

[0032] As shown in FIG. 4 , the fixing hole 64 has an expanded diameter portion 64a at a portion connecting to the first main surface 65, the diameter of which gradually increases toward the first main surface 65. The fixing hole 64 also has a chamfered portion 64b at a portion connecting to the second main surface 66, the diameter of which gradually increases toward the second main surface 66. The fixing hole 64 also has a constant diameter portion 64c between the expanded diameter portion 64a and the chamfered portion 64b, the diameter of which is constant. In this embodiment, the maximum diameter of the expanded diameter portion 64a is set to be larger than the maximum diameter of the chamfered portion 64b. In this embodiment, the length of the expanded diameter portion 64a along the third axis Z is set to be larger than the length of the chamfered portion 64b along the third axis Z. Note that FIGS. 4 to 6 are diagrams illustrating the manufacturing process of the cover unit 40, and are illustrated in the opposite direction to FIGS. 1 to 3 in terms of the direction along the third axis Z, i.e., the upward direction Z1 and the downward direction Z2.

[0033] (Configuration of rubber stopper 70) As shown in FIG. 3 , the rubber stopper 70 can be press-fitted into the communication hole 23 of the connector housing 20 along a third axis Z, which serves as a press-fit axis. More specifically, the rubber stopper 70 is made of a columnar rubber material. The rubber stopper 70 is solid. That is, the rubber stopper 70 is configured so as not to have any voids inside. The rubber stopper 70 has a rubber stopper main body 71, a first large diameter portion 72, a fixed shaft 73, a second large diameter portion 74, and a temporary holding shaft 75. The rubber stopper main body 71, the first large diameter portion 72, the fixed shaft 73, the second large diameter portion 74, and the temporary holding shaft 75 are arranged in this order from the downward direction Z2 to the upward direction Z1.

[0034] The rubber plug body 71 is formed so that its tip can be press-fitted into the communication hole 23 of the connector housing 20. The tip of the rubber plug body 71 is the end of the rubber plug 70 in the downward direction Z2.

[0035] As shown in Figure 4, the rubber stopper body 71 of this embodiment has a body shaft 71a and a lip portion 71b that protrudes radially outward from the body shaft 71a and is capable of pressing into contact with the communicating hole 23 (see Figure 3). The lip portion 71b is provided around the entire circumference of the body shaft 71a, and the entire circumference is capable of pressing into contact with the communicating hole 23. The rubber stopper body 71 of this embodiment has two lip portions 71b spaced apart along the third axis Z. In addition, the base end of the rubber stopper body 71 of this embodiment has an expanded diameter body portion 71c whose diameter gradually increases toward the first large diameter portion 72.

[0036] The first large diameter portion 72 is provided at the base end of the rubber stopper main body 71, and protrudes in a direction intersecting with the third axis Z. The diameter of the first large diameter portion 72 is set to be larger than the diameter of the lip portion 71b.

[0037] 6, the first large diameter portion 72 is provided so as to abut against the first main surface 65 of the cover 60 in a fixed state in which the rubber stopper 70 is fixed in the fixing hole 64. More specifically, the end surface 72a of the first large diameter portion 72 is set so as to abut against the first main surface 65 of the cover 60 in the fixed state.

[0038] The fixed shaft portion 73 extends from the first large diameter portion 72 in the opposite direction to the rubber stopper main body portion 71. The fixed shaft portion 73 is provided so as to fit into the fixing hole 64 when the rubber stopper 70 is fixed in the fixing hole 64.

[0039] The second large diameter portion 74 is provided at the tip of the fixed shaft portion 73 and protrudes in a direction intersecting the third axis Z to a size that allows it to pass through the fixing hole 64 by elastic deformation of itself. The second large diameter portion 74 is provided so as to sandwich the cover 60 together with the first large diameter portion 72 along the third axis Z when the rubber stopper 70 is fixed in the fixing hole 64. The diameter and other factors of the second large diameter portion 74 are set so that the rubber stopper main body 71 can be removed from the communicating hole 23 without being removed from the fixing hole 64 when the cover 60 is lifted in the upward direction Z1 from a state in which the rubber stopper main body 71 is press-fitted into the communicating hole 23 (see FIG. 3 ).

[0040] 5, the temporary holding shaft 75 extends from the second large diameter portion 74 in the opposite direction to the fixed shaft 73. The temporary holding shaft 75 is provided so as to be able to temporarily hold the rubber stopper 70 so that the rubber stopper 70 does not fall over relative to the cover 60 in a temporary assembled state in which the temporary holding shaft 75 is inserted into the fixing hole 64. The diameter of the temporary holding shaft 75 in this embodiment is set to be equal to or greater than the diameter of the main body shaft 71a of the rubber stopper main body 71. In addition, the tip of the temporary holding shaft 75 has a tapered portion 75a whose diameter gradually decreases toward the tip.

[0041] Furthermore, in the present embodiment, the second large diameter portion 74 has an inclined portion 74a that is inclined so as to come into surface contact with the expanded diameter hole portion 64a of the fixing hole 64 in a temporary assembled state in which the temporary holding shaft portion 75 is inserted into the fixing hole 64. That is, in the present embodiment, in the temporary assembled state, the outer peripheral surface of the temporary holding shaft portion 75 comes into contact with the constant diameter portion 64c of the fixing hole 64, and the inclined portion 74a comes into contact with the expanded diameter hole portion 64a, thereby supporting the rubber stopper 70 against the cover 60 so that it does not fall over.

[0042] (Manufacturing process and function of cover unit 40) The cover unit 40 configured as above is assembled as follows. 4 and 5, the rubber stopper 70 is placed from the upward direction Z1 on the cover 60 with the first main surface 65 facing the upward direction Z1 by the first automatic machine 80. The first automatic machine 80 is configured to be able to grip the rubber stopper 70 and is also capable of moving the gripped rubber stopper 70.

[0043] As shown in Fig. 5, the first automatic machine 80 positions the rubber stopper 70 so that the temporary holding shaft 75 is inserted into the fixing hole 64. Then, the outer circumferential surface of the temporary holding shaft 75 comes into contact with the constant diameter portion 64c of the fixing hole 64, and the inclined portion 74a comes into contact with the expanded diameter portion 64a of the fixing hole 64, so that the rubber stopper 70 is supported so as not to fall over relative to the cover 60. In other words, the rubber stopper 70 stands on its own by engaging its temporary holding shaft 75 and inclined portion 74a with the cover 60. This places the rubber stopper 70 in a temporarily assembled state.

[0044] Next, as shown in Figure 6, the rubber stopper 70 is pushed in from the upward direction Z1 by the second automatic machine 81. The second automatic machine 81 is a device that can push the tip surface 71d of the rubber stopper main body 71 in the downward direction Z2. When the rubber stopper 70 is pushed in by the second automatic machine 81, the second large diameter portion 74 passes through the fixing hole 64 by elastically deforming itself. Then, the rubber stopper 70 is fixed to the cover 60 by fitting the fixing shaft portion 73 into the fixing hole 64 and sandwiching the cover 60 between the first large diameter portion 72 and the second large diameter portion 74. This brings the rubber stopper 70 into an assembled state.

[0045] 3, in the cover unit 40 assembled as described above, the cover 60 is fixed to the connector housing 20 and the rubber stopper main body 71 is press-fitted into the communication hole 23. This prevents liquid from entering the inside of the connector housing 20 through the communication hole 23.

[0046] The cover unit 40 is removed from the connector housing 20 when detecting voltage on the terminal fittings 50. Then, a probe of a voltage detector (not shown) is brought into contact with the terminal fittings 50 through the communication holes 23, thereby detecting voltage on the terminal fittings 50 from outside the connector 10.

[0047] (Effects of this embodiment) Next, the effects of the above embodiment will be described below. (1) When the second large diameter portion 74 of the rubber stopper 70 passes through the fixing hole 64, the fixing shaft portion 73 fits into the fixing hole 64 and the first large diameter portion 72 and the second large diameter portion 74 sandwich the cover 60, thereby fixing the rubber stopper 70 to the cover 60. Therefore, the configuration can be simplified compared to, for example, a configuration including a separate rubber stopper holder for fixing the rubber stopper 70 to the cover 60. The rubber stopper 70 also has a temporary holding shaft portion 75 that extends from the second large diameter portion 74 in the opposite direction to the fixing shaft portion 73. The temporary holding shaft portion 75 can temporarily hold the rubber stopper 70 so that the rubber stopper 70 does not fall over relative to the cover 60 in a temporarily assembled state where the rubber stopper 70 is inserted into the fixing hole 64, thereby improving the ease of assembly to the cover 60. For example, the rubber stopper 70 can be easily assembled to the cover 60 using a first automatic machine 80 that positions the rubber stopper 70 so that the temporary holding shaft 75 is inserted into the fixing hole 64, and a second automatic machine 81 that pushes the rubber stopper 70 from the temporary assembled state to the assembled state.

[0048] (2) The fixing hole 64 has an enlarged diameter hole portion 64a whose diameter gradually increases toward the first main surface 65, making it easier to insert the temporary holding shaft portion 75 of the rubber stopper 70. The second large diameter portion 74 has an inclined portion 74a that is inclined so as to come into surface contact with the enlarged diameter hole portion 64a of the fixing hole 64 in a temporary assembled state in which the temporary holding shaft portion 75 is inserted into the fixing hole 64, making it less likely that the rubber stopper 70 will tip over relative to the cover 60 in the temporary assembled state. This improves the ease of assembling the rubber stopper 70 to the cover 60.

[0049] (3) The base end of the rubber stopper main body 71 has a main body enlarged diameter portion 71c whose diameter gradually increases toward the first large diameter portion 72. Therefore, for example, when the rubber stopper 70 is pushed in from a temporary assembled state in which the temporary holding shaft portion 75 is inserted into the fixing hole 64, it is possible to prevent the rubber stopper 70 from bending relative to the third axis Z.

[0050] (4) The diameter of the temporary holding shaft portion 75 is set to be equal to or greater than the diameter of the main body shaft portion 71a of the rubber stopper main body portion 71, so that the rubber stopper 70 is less likely to fall over relative to the cover 60 in the temporary assembly state compared to when the diameter is set to be less than the diameter of the main body shaft portion 71a, for example.

[0051] (5) Because the rubber stopper 70 is a solid body, for example, when the rubber stopper 70 is pushed in from a temporarily assembled state in which the temporary holding shaft 75 is inserted into the fixing hole 64, the rubber stopper 70 can be prevented from bending with respect to the third axis Z. That is, for example, if the rubber stopper 70 has an internal gap, the rubber stopper 70 is likely to bend when the rubber stopper 70 is pushed in from a temporarily assembled state in which the temporary holding shaft 75 is inserted into the fixing hole 64, but if the rubber stopper 70 is a solid body, this can be prevented.

[0052] (Example of change) The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0053] In the above embodiment, the fixing hole 64 has an expanded diameter portion 64a whose diameter gradually increases toward the first main surface 65. However, this is not limited to this, and for example, the fixing hole 64 may not have an expanded diameter portion 64a. In this case, it is preferable that the second large diameter portion 74 does not have an inclined portion 74a. Furthermore, even if the fixing hole 64 has an expanded diameter portion 64a, the second large diameter portion 74 may not have an inclined portion 74a.

[0054] In the above embodiment, the base end of the rubber stopper main body 71 has a main body enlarged diameter portion 71c whose diameter gradually increases toward the first large diameter portion 72, but this is not limited to this, and the configuration may not have a main body enlarged diameter portion 71c.

[0055] In the above embodiment, the diameter of the temporary holding shaft portion 75 is set to be equal to or greater than the diameter of the main body shaft portion 71a of the rubber stopper main body portion 71, but this is not limited to this and may be set to be, for example, less than the diameter of the main body shaft portion 71a.

[0056] In the above embodiment, the rubber stopper 70 is a solid body, but this is not limiting and may have an internal void. Furthermore, the rubber stopper 70 may have another member, such as a resin member, embedded therein.

[0057] In the above embodiment, the connector housing 20 has two communication holes 23, but this is not limiting and the number of communication holes 23 may be one or three or more. In this case, it is of course necessary to change the number of rubber stoppers 70 provided in the cover unit 40.

[0058] 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]

[0059] 10 Connectors 20 Connector housing 21 First cylindrical portion 22 Second cylindrical portion 23 Communication hole 24 Cylinder part 25 First Nut 26 Second nut 30 Metal Shell 31 Upper Wall 32 Side wall 33 Back wall 34 Exposure hole 35 recess 36 First through hole 37 Second through hole 38 First screw 40 Cover unit 50 Terminal fittings 60 Cover 61 Bent piece 62 Cover through hole 63 Second screw 64 Fixed hole 64a Hole expansion part 64b Chamfered part 64c Constant diameter part 65 First main surface 66 Second main surface 70 Rubber stopper 71 Rubber stopper body 71a Main body shaft 71b Lip 71c Main body enlarged diameter part 71d Tip surface 72 First large diameter section 72a End face 73 Fixed shaft part 74 Second large diameter section 74a Slope 75 Temporary holding shaft 75a tapered part 80 First Automatic Machine 81 Second Automatic Machine X 1st axis Y 2nd axis Z 3rd axis (press-fit axis) Z1 upward direction Z2 Downward

Claims

1. a columnar rubber plug that can be press-fitted into the communication hole of the connector housing along a press-fit axis; a plate-shaped cover having a fixing hole for fixing the rubber plug and fixable to the connector housing, The rubber stopper is a rubber plug body that can be press-fitted into the communication hole from its tip; a first large diameter portion provided at a base end of the rubber stopper body portion, protruding in a direction intersecting the press-fitting axis, and abutting against a first main surface of the cover when the rubber stopper is assembled in the fixing hole; a fixing shaft portion that extends from the first large diameter portion in a direction opposite to the rubber stopper body portion and that fits into the fixing hole in the assembled state; a second large diameter portion provided at a tip end of the fixing shaft portion, protruding in a direction intersecting the press-fitting axis with a size that allows it to pass through the fixing hole by elastic deformation of itself, and sandwiching the cover along the press-fitting axis together with the first large diameter portion in the assembled state; a temporary holding shaft portion extending from the second large diameter portion in the opposite direction to the fixed shaft portion, and capable of temporarily holding the rubber stopper so that the rubber stopper does not fall relative to the cover in a temporary assembled state in which the rubber stopper is inserted into the fixing hole, Cover unit.

2. the fixing hole has an enlarged diameter portion whose diameter gradually increases toward the first main surface, the second large diameter portion has an inclined portion that is inclined so as to come into surface contact with the expanded diameter hole portion in the temporary assembled state; The cover unit according to claim 1 .

3. The base end of the rubber stopper body has a body enlarged diameter portion whose diameter gradually increases toward the first large diameter portion. The cover unit according to claim 1 .

4. the rubber stopper body has a body shaft and a lip portion that protrudes radially outward from the body shaft and is capable of pressing into contact with the communication hole, The diameter of the temporary holding shaft portion is set to be equal to or larger than the diameter of the main body shaft portion. The cover unit according to claim 1 .

5. The rubber stopper is a solid body. The cover unit according to claim 1 .

6. A cover unit according to any one of claims 1 to 5; the connector housing; a terminal fitting accommodated inside the connector housing and enabling voltage detection from the outside through the communication hole, connector.

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