CN218123803U

CN218123803U - Mounting seat and charging seat

Info

Publication number: CN218123803U
Application number: CN202221557975.0U
Authority: CN
Inventors: 齐建伟; 朱方跃; 王进顺
Original assignee: Tyco Electronics Shanghai Co Ltd; Tyco Electronics Technology SIP Ltd; Tyco Electronics Suzhou Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd; Tyco Electronics Technology SIP Ltd; Tyco Electronics Suzhou Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-12-23
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a mount pad and charging seat. The mount pad includes: a seat body portion; and a coupling lug coupled to the seat portion for fixing to a vehicle body. The connecting lug is provided with a positioning column which is suitable for being inserted into a positioning hole on the vehicle body so as to pre-mount the charging seat on the vehicle body, the connecting lug is also provided with a connecting hole, and the mounting seat is suitable for being connected to the vehicle body through a connecting piece penetrating through the connecting hole so as to fixedly mount the charging seat on the vehicle body. The utility model discloses in, the charging seat can be pre-installed on the automobile body. Therefore, when the charging seat is installed, workers only need to align the connecting holes and insert and tighten the bolts without lifting the whole charging seat by hands, so that the installation of the charging seat is very convenient and easy.

Description

Mounting seat and charging seat

Technical Field

The utility model relates to a charging seat that is used for installing the charging seat mount on the automobile body and includes this mount pad.

Background

In the prior art, an ac charging cradle on a new energy vehicle generally includes a mounting base, a housing, a rear end cap, and terminals. The housing is secured to the inside of the mount and the rear end cap is mounted to the rear port of the housing. The terminal is installed in the casing, is formed with the port of charging protrudingly on the surface of mount pad, and the one end of terminal stretches into in the port of charging to with the terminal of mating on the rifle that charges.

In the related art, in order to fixedly mount the charging stand to the sheet metal of the vehicle body, a coupling lug is formed on the mounting stand, and a coupling hole is formed in the coupling lug. The bolt passes through the connecting hole on the engaging lug and the connecting hole on the automobile body panel beating and is connected with the nut to can be fixed the mount pad to the automobile body panel beating on.

However, in the prior art, when the charging seat is mounted on the metal plate of the vehicle body, a worker needs to lift the whole charging seat by hand, align the connecting holes on the connecting lugs and the connecting holes on the metal plate of the vehicle body, insert the bolts and tighten the bolts, and finally the worker can loosen the charging seat. This results in a very laborious and difficult installation of the charging cradle.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above problems and drawbacks existing in the prior art.

According to an aspect of the present invention, a mounting base is provided for mounting a charging base on a vehicle body. The mount pad includes: a seat body portion; and the connecting lug is connected to the seat body part and used for being fixed on a vehicle body, a positioning column is formed on the connecting lug and is suitable for being inserted into a positioning hole in the vehicle body so as to pre-mount the charging seat on the vehicle body, a connecting hole is further formed in the connecting lug, and the mounting seat is suitable for being connected to the vehicle body through a connecting piece penetrating through the connecting hole so as to fixedly mount the charging seat on the vehicle body.

According to an exemplary embodiment of the present invention, the positioning column on the engaging lug includes a tapered guide end portion to guide the positioning column to be inserted into the positioning hole on the vehicle body.

According to the utility model discloses a further exemplary embodiment, reference column on the engaging lug is the solid, and the maximum external diameter of reference column equals or is less than a little the aperture of locating hole on the automobile body.

According to another exemplary embodiment of the present invention, a locking surface extending in a radial direction thereof is formed on the positioning column, and a diameter of the locking surface is equal to or slightly smaller than an aperture of a positioning hole on the vehicle body; the locking surface is used for abutting against the side face of the vehicle body so as to prevent the positioning column from being separated from the positioning hole in the vehicle body.

According to another exemplary embodiment of the present invention, a groove hole is formed on the positioning column, so that the positioning column can be elastically deformed in a radial direction thereof; and the maximum outer diameter of the positioning column is larger than the aperture of the positioning hole in the vehicle body.

According to another exemplary embodiment of the present invention, a locking surface extending in a radial direction of the positioning column is formed on the positioning column, and a diameter of the locking surface is larger than an aperture of the positioning hole on the vehicle body; the locking surface is used for abutting against the side face of the vehicle body so as to prevent the positioning column from being separated from the positioning hole in the vehicle body.

According to another exemplary embodiment of the present invention, the positioning post further comprises a root portion connected to the engaging lug and an intermediate portion located between the leading end portion and the root portion; the maximum outer diameter of the root part of the positioning column is equal to or slightly smaller than the aperture of the positioning hole in the vehicle body, and the locking surface is an end surface of the middle part connected with the root part.

According to another exemplary embodiment of the present invention, the slot extends through and divides in half the root portion and the middle portion of the positioning column in the axial direction of the positioning column.

According to another exemplary embodiment of the present invention, the root of the positioning column has a constant outer diameter and the intermediate portion of the positioning column has a varying outer diameter.

According to another exemplary embodiment of the present invention, the middle part of the positioning column comprises: a first portion having a constant first outer diameter and connected to the leading end portion; a second portion having a constant second outer diameter and connected to the root portion, the second outer diameter being greater than the first outer diameter and the outer diameter of the root portion; and a third portion connected between the first portion and the second portion and having an outer diameter gradually changing from the first outer diameter to the second outer diameter.

According to another exemplary embodiment of the present invention, the slotted hole does not penetrate the guide end in the axial direction of the positioning column, so that at least a part of the guide end is continuous in the circumferential direction.

According to another exemplary embodiment of the present invention, the mount further comprises: a connection leg connected between the seat portion and the connection ear.

According to another exemplary embodiment of the present invention, the mounting seat comprises two connecting legs and two connecting ears, the two connecting ears being connected to the two connecting legs, respectively; the positioning columns on the two connecting lugs are used for being simultaneously inserted into the positioning holes in the vehicle body.

According to another exemplary embodiment of the present invention, when the mounting seat is preassembled on the vehicle body, the connection hole on the engaging lug is aligned with the corresponding connection hole on the vehicle body or the radial deviation therebetween is smaller than a predetermined value.

According to another exemplary embodiment of the present invention, the seat body portion of the mounting seat has a flat outer surface, the engaging lug has a mounting surface adapted to abut against the surface of the vehicle body, and a predetermined angle is provided between the mounting surface of the engaging lug and the outer surface of the seat body portion.

According to another aspect of the present invention, there is provided a charging stand, including: the mounting seat; and a housing fixed to an inner side of the seat body portion of the mount.

According to an exemplary embodiment of the present invention, the charging seat further comprises: the terminal is installed in the shell and used for being matched with a matching terminal in a charging gun, the installation seat is provided with a charging port protruding from the outer surface of the seat body part of the installation seat and used for being matched with the charging gun, and one end of the terminal extends into the charging port to form a charging interface together with the charging port.

According to another exemplary embodiment of the present invention, the housing comprises: the outer peripheral wall encloses an inner cavity; a partition wall connected to the outer peripheral wall and dividing the inner chamber into a front chamber and a rear chamber; a holding column located in the front chamber and connected to the partition wall; and a terminal insertion hole penetrating the holding post and the partition wall in the axial direction, the terminal being mounted in the terminal insertion hole with one end of the holding post projecting into the charging port.

According to another exemplary embodiment of the present invention, an ear portion is formed on the outer peripheral wall of the case, the ear portion having a through hole; a projection column is formed on an inner side of the seat portion of the mount seat, the projection column being inserted into the through hole of the ear portion to fix the housing to the mount seat.

According to another exemplary embodiment of the present invention, the charging stand further comprises: and a rear end cap mounted on the rear port of the housing and formed with a terminal through-hole allowing the terminal to pass therethrough.

In the aforementioned various exemplary embodiments according to the present invention, the charging stand may be pre-installed on the vehicle body. Therefore, when the charging seat is installed, workers do not need to lift the whole charging seat by hands, and only need to align the connecting holes and insert and tighten the bolts, so that the charging seat is very convenient and easy to install.

Other objects and advantages of the present invention will become apparent from the following description of the invention, which is made with reference to the accompanying drawings, and can help to provide a thorough understanding of the present invention.

Drawings

Fig. 1 shows a perspective assembly view of a charging stand according to an exemplary embodiment of the present invention, as viewed from the rear side;

fig. 2 shows a perspective assembly view of a charging stand according to an exemplary embodiment of the present invention, viewed from the front side;

fig. 3 shows an exploded view of a charging stand according to an exemplary embodiment of the present invention;

fig. 4 shows a schematic perspective view of a mount from the rear side according to an exemplary embodiment of the invention;

fig. 5 shows a side view of a mount according to an exemplary embodiment of the present invention;

fig. 6 shows a partially enlarged schematic view of a mount according to an exemplary embodiment of the invention, in which a positioning post is shown;

fig. 7 shows a schematic perspective view of the casing of the charging stand according to an exemplary embodiment of the present invention, viewed from the front side.

Detailed Description

The technical solution of the present invention is further specifically described below by way of embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the drawings is intended to explain the general inventive concept and should not be construed as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagram form to simplify the drawing.

According to a general aspect of the present invention, there is provided a mounting base for mounting a charging stand to a vehicle body. The mount pad includes: a seat body portion; and a coupling lug coupled to the seat portion for fixing to a vehicle body, a positioning post being formed on the coupling lug, the positioning post being adapted to be inserted into a positioning hole on the vehicle body to preload the charging stand on the vehicle body, a coupling hole being further formed on the coupling lug, the mounting seat being adapted to be coupled to the vehicle body by a coupling member passing through the coupling hole to fixedly mount the charging stand on the vehicle body.

According to another general technical concept of the present invention, there is provided a charging stand, including: the mounting seat; and a housing fixed to an inner side of the seat body portion of the mount.

Fig. 1 shows a perspective assembly schematic view of a charging dock as viewed from the rear side according to an exemplary embodiment of the present invention; fig. 2 shows a perspective assembly view of a charging dock according to an exemplary embodiment of the present invention, viewed from the front side; fig. 3 shows an exploded view of a charging stand according to an exemplary embodiment of the present invention.

As shown in fig. 1 to 3, in the illustrated embodiment, the charging stand mainly includes: the mounting base 1, the housing 2, the rear cover 3, and terminals (not shown, including a charging terminal and a signal terminal). The housing 2 is fixed to the inner side of the mount 1. Terminals are mounted in the housing 2 for mating with mating terminals in the charging gun. The rear end cap 3 is mounted to the rear port of the housing.

Fig. 4 shows a schematic perspective view of a mounting 1 according to an exemplary embodiment of the invention, seen from the rear side; fig. 5 shows a side view of a mount 1 according to an exemplary embodiment of the present invention; fig. 6 shows a partially enlarged schematic view of a mounting 1 according to an exemplary embodiment of the invention, wherein a positioning post 11 is shown.

As shown in fig. 1 to 6, in the illustrated embodiment, the mounting base 1 is used to mount a charging base on a vehicle body (not shown), such as a vehicle body sheet metal. The mount 1 mainly includes: a seat portion 100 and an engaging ear 10. The engaging lug 10 is connected to the seat portion 100 for fixing to a vehicle body. The connecting lug 10 is formed with a positioning post 11, and the positioning post 11 is adapted to be inserted into a positioning hole (not shown) of the vehicle body to preassemble the charging stand on the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, a connection hole 12 is further formed on the connection lug 10, and the mounting base 1 is adapted to be connected to the vehicle body by a connection member (not shown, e.g., a bolt) passing through the connection hole 12 to fixedly mount the charging base to the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, the charging stand is pre-assembled to the vehicle body, and then aligned with the connection holes 12 of the connection lugs 10 and the corresponding connection holes of the vehicle body, and then the bolts are inserted and tightened to fixedly mount the charging stand to the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, the positioning post 11 on the engaging lug 10 includes a tapered guide end portion 111 to guide the positioning post 11 to be inserted into a positioning hole on the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, a slot hole 114 is formed in the positioning column 11 so that the positioning column 11 can be elastically deformed in a radial direction thereof; and the maximum outer diameter of the positioning column 11 is larger than the aperture of the positioning hole on the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, a locking surface 11a extending in a radial direction of the positioning column 11 is formed on the positioning column, and a diameter of the locking surface 11a is larger than a hole diameter of the positioning hole on the vehicle body. The lock surface 11a is for abutting on a side surface of the vehicle body to prevent the positioning post 11 from being separated from the positioning hole on the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, the positioning post 11 further includes a root portion 113 connected to the engaging lug 10 and an intermediate portion 112 located between the leading end portion 111 and the root portion 113. The maximum outer diameter of the root portion 113 of the positioning post 11 is equal to or slightly smaller than the hole diameter of the positioning hole in the vehicle body, and the locking surface 11a is the end surface of the intermediate portion 112 connected to the root portion 113.

As shown in fig. 1 to 6, in the illustrated embodiment, a slot 114 extends through root portion 113 and intermediate portion 112 of positioning column 11 in the axial direction of positioning column 11 and divides root portion 113 and intermediate portion 112 of positioning column 11 in half.

As shown in fig. 1-6, in the illustrated embodiment, root portion 113 of locating post 11 has a constant outer diameter and intermediate portion 112 of locating post 11 has a varying outer diameter.

As shown in fig. 1 to 6, in the illustrated embodiment, the middle portion 112 of the positioning post 11 includes: a first portion 112a having a constant first outer diameter and connected to the leading end portion 111; a second portion 112b having a constant second outer diameter and connected to the root 113, the second outer diameter being larger than the first outer diameter and the outer diameter of the root 113; and a third portion 112c connected between the first portion 112a and the second portion 112b and having an outer diameter gradually changing from the first outer diameter to the second outer diameter.

As shown in fig. 1 to 6, in the illustrated embodiment, the groove hole 114 does not penetrate the guide end portion 111 in the axial direction of the positioning column 11, so that at least a part of the guide end portion 111 is continuous in the circumferential direction. In this way, the positioning column 11 can be ensured to have sufficient strength.

As shown in fig. 1 to 6, in the illustrated embodiment, the positioning post 11 is a hollow body formed with a slot 114. However, the present invention is not limited to the illustrated embodiment, for example, in another exemplary embodiment of the present invention, the positioning column 11 on the engaging lug 10 may be a solid body, and the maximum outer diameter of the positioning column 11 is equal to or slightly smaller than the aperture of the positioning hole on the vehicle body. A lock surface 11a extending in a radial direction thereof is formed on the positioning column 11, and the diameter of the lock surface 11a is equal to or slightly smaller than the hole diameter of the positioning hole on the vehicle body. In this embodiment, although the diameter of the locking surface 11a is not larger than the diameter of the positioning hole on the vehicle body, the positioning column 11 is inclined relative to the axial direction of the positioning hole by the gravity of the charging seat, which may cause the locking surface 11a to be biased to one side of the positioning hole and abut against the side surface of the vehicle body, so that the positioning column 11 can also be prevented from being separated from the positioning hole on the vehicle body.

As shown in fig. 1-6, in the illustrated embodiment, the mount further includes a connecting leg 13, the connecting leg 13 being connected between the mount body portion 100 and the engaging ear 10. In the illustrated embodiment, the mounting seat comprises two connecting legs 13 and two connecting ears 10, the two connecting ears 10 being connected to the two connecting legs 13, respectively. The positioning columns 11 on the two connecting lugs 10 are used for being simultaneously inserted into positioning holes in the vehicle body.

As shown in fig. 1 to 6, in the illustrated embodiment, when the mount 1 is preassembled to the vehicle body, the coupling holes 12 of the coupling lugs 10 are aligned with the corresponding coupling holes of the vehicle body or the radial deviation therebetween is smaller than a predetermined value. In this way, the alignment operation of the connection hole 12 can be facilitated later.

As shown in fig. 1 to 6, in the illustrated embodiment, the seat body portion 100 of the mount 1 has a flat outer surface 100a, and the engaging lug 10 has a mounting surface 10a adapted to abut on a surface of a vehicle body. The mounting surface 10a of the engaging lug 10 and the outer surface 100a of the seat body 100 form a predetermined angle a. Thus, the outer surface 100a of the seat portion 100 remains vertical after the charging stand is mounted to the inclined vehicle body.

Fig. 7 shows a schematic perspective view of the casing 2 of the charging stand according to an exemplary embodiment of the present invention, viewed from the front side.

As shown in fig. 1 to 7, in an exemplary embodiment of the present invention, a charging seat is further disclosed, the charging seat includes: a mounting base 1 and a housing 2. The housing 2 is fixed to the inner side of the housing body portion 100 of the mount 1.

As shown in fig. 1 to 7, in the illustrated embodiment, the charging stand further includes terminals mounted in the housing 2 for mating with mating terminals in the charging gun. The mount 1 has a charging port 101 for fitting with a charging gun, which projects from an outer surface 100a of its housing portion 100. One end of the terminal protrudes into the charging port 101 to constitute a charging interface together with the charging port 101.

As shown in fig. 1 to 7, in the illustrated embodiment, the housing 2 includes: an outer peripheral wall 20 enclosing an inner cavity; a partition wall 21 connected to the outer peripheral wall 20 and dividing the inner chamber into a front chamber and a rear chamber; a holding column 22 located in the front chamber and connected to the partition wall 21; and a terminal insertion hole 201 axially penetrating the holding post 22 and the partition wall 21. The terminal is mounted in the terminal insertion hole 201, and one end of the holding post 22 protrudes into the charging port 101.

As shown in fig. 1 to 7, in the illustrated embodiment, an ear portion 202 is formed on the outer peripheral wall 20 of the housing 2, and the ear portion 202 has a through hole 202a. A projection column 102 is formed on the inner side of the seat body portion 100 of the mount 1. The projecting posts 102 are inserted into the through holes 202a of the ear portions 202 to fix the housing 2 to the mount 1.

As shown in fig. 1 to 7, in the illustrated embodiment, the charging stand further includes a rear cover 3, and the rear cover 3 is mounted on the rear port of the case 2 and is formed with a terminal through-hole 301 allowing the terminal to pass therethrough.

It is understood by those skilled in the art that the above-described embodiments are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle, and that such modifications are intended to fall within the scope of the present invention.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of the present invention, and should not be construed as limiting the present invention.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Additionally, any element numbers of the claims should not be construed as limiting the scope of the invention.

Claims

1. A mount for mounting a charging dock to a vehicle body, the mount comprising:

a seat body portion; and

an engaging lug connected to the seat portion for fixing to a vehicle body,

a positioning column is formed on the connecting lug and is suitable for being inserted into a positioning hole on the vehicle body so as to pre-mount the charging seat on the vehicle body,

a connection hole is further formed on the connection ear, and the mounting seat is adapted to be connected to the vehicle body by a connection member passing through the connection hole to fixedly mount the charging seat to the vehicle body.

2. The mount of claim 1, wherein:

the positioning post on the connecting lug comprises a tapered guide end part so as to guide the positioning post to be inserted into the positioning hole on the vehicle body.

3. The mount of claim 2, wherein:

the positioning column on the connecting lug is a solid body, and the maximum outer diameter of the positioning column is equal to or slightly smaller than the aperture of the positioning hole on the vehicle body.

4. The mount of claim 3, wherein:

a locking surface extending along the radial direction of the positioning column is formed on the positioning column, and the diameter of the locking surface is equal to or slightly smaller than the diameter of a positioning hole in the vehicle body;

the locking surface is used for abutting against the side face of the vehicle body so as to prevent the positioning column from being separated from the positioning hole in the vehicle body.

5. The mount of claim 2, wherein:

a slotted hole is formed in the positioning column, so that the positioning column can elastically deform along the radial direction of the positioning column; and the maximum outer diameter of the positioning column is larger than the aperture of the positioning hole in the vehicle body.

6. The mount of claim 5, wherein:

a locking surface extending along the radial direction of the positioning column is formed on the positioning column, and the diameter of the locking surface is larger than the diameter of a positioning hole in the vehicle body;

7. The mount of claim 6, wherein:

the positioning column further comprises a root part connected with the connecting lug and a middle part positioned between the guide end part and the root part;

the maximum outer diameter of the root part of the positioning column is equal to or slightly smaller than the aperture of the positioning hole in the vehicle body, and the locking surface is an end surface of the middle part connected with the root part.

8. The mount of claim 7, wherein:

the slot hole extends through the root portion and the middle portion of the positioning column in the axial direction of the positioning column and divides the root portion and the middle portion of the positioning column into two halves.

9. The mount of claim 7, wherein:

the root portion of the positioning post has a constant outer diameter and the intermediate portion of the positioning post has a varying outer diameter.

10. The mount of claim 9, wherein:

the middle part of reference column includes:

a first portion having a constant first outer diameter and connected to the leading end portion;

a second portion having a constant second outer diameter and connected to the root portion, the second outer diameter being greater than the first outer diameter and the outer diameter of the root portion; and

a third portion connected between the first portion and the second portion and having an outer diameter gradually changing from the first outer diameter to the second outer diameter.

11. A mount according to any one of claims 5-10, wherein:

the groove hole does not penetrate through the leading end portion in an axial direction of the positioning column, so that at least a portion of the leading end portion is continuous in a circumferential direction.

12. The mount of any one of claims 1-10, further comprising:

a connection leg connected between the seat portion and the connection ear.

13. The mount of claim 12, wherein:

the mounting seat comprises two connecting legs and two connecting lugs, and the two connecting lugs are respectively connected to the two connecting legs;

the positioning columns on the two connecting lugs are used for being simultaneously inserted into the positioning holes in the vehicle body.

14. The mount of any one of claims 1-10, wherein:

when the mounting seat is preassembled on the vehicle body, the connecting holes in the connecting lugs are aligned with the corresponding connecting holes in the vehicle body or the radial deviation between the connecting holes and the corresponding connecting holes is smaller than a preset value.

15. The mount of any one of claims 1-10, wherein:

the seat body part of the mounting seat is provided with a flat outer surface, the connecting lug is provided with a mounting surface which is suitable for being attached to the surface of the vehicle body, and a preset included angle is formed between the mounting surface of the connecting lug and the outer surface of the seat body part.

16. A charging cradle, comprising:

the mount of any one of claims 1-15; and

a housing fixed to an inner side of a seat body portion of the mount.

17. The charging dock of claim 16, further comprising:

a terminal installed in the housing for mating with a mating terminal in a charging gun,

the mounting base has a charging port projecting from an outer surface of a base portion thereof for mating with the charging gun,

one end of the terminal extends into the charging port to form a charging interface together with the charging port.

18. The charging cradle according to claim 17, wherein:

the housing includes:

the outer peripheral wall encloses an inner cavity;

a partition wall connected to the outer peripheral wall and dividing the inner chamber into a front chamber and a rear chamber;

a holding column located in the front chamber and connected to the partition wall; and

a terminal insertion hole axially penetrating the holding post and the partition wall,

the terminal is mounted in the terminal insertion hole, and one end of the holding post protrudes into the charging port.

19. The charging cradle of claim 18, wherein:

an ear part is formed on the peripheral wall of the shell and is provided with a through hole;

a projection column is formed on an inner side of the seat portion of the mount seat, the projection column being inserted into the through hole of the ear portion to fix the housing to the mount seat.

20. The charging cradle of claim 18, further comprising:

and a rear end cap mounted on the rear port of the housing and formed with a terminal through-hole allowing the terminal to pass therethrough.