CN103296529B - Disc-type plug-in connector - Google Patents

Abstract

This invention relates to disc card inserts. An object of the present invention is to provide an inexpensive tray card which can be easily positioned when assembled in an electronic device housing. In the disc-type card insert (10), it includes: a chuck (11) for accommodating a memory card (A); a casing (13) for inserting into the chuck (11); and a plurality of contacts (14, 14, ...), It protrudes into the disc insertion part (12) and contacts the signal terminal of the memory card (A) accommodated in the chuck (11). The chuck (11) includes: a disk body (20), which accommodates the memory card; and a movable cover (50), which is arranged on the side of the disk body (20) in the direction of pulling out the disk, and is provided with a front edge cover (56), When installed on the electronic equipment frame (C), it is exposed to the outer side of the frame through the exposure hole (59) formed in the frame. The movable cover (50) is engaged with the disk body (20) so as to be able to move in front and rear, left and right and/or up and down directions.

Description

Disk card insert

technology area

The present invention relates to a card connector for electrically connecting a memory card such as an IC card or a flash memory card to a printed wiring board mounted on an electronic device such as a mobile phone or a smart phone.

Background technique

Conventionally, memory cards such as IC cards and flash memory cards have been used as external storage media for electronic devices such as mobile phones and smartphones, and the memory cards and printed wiring boards mounted on the electronic devices are electrically connected through card sockets.

In such a card insert, a cartridge that can hold a memory card, a housing having a disk insertion portion inserted into the cartridge, a plurality of contacts that protrude into the disk insertion portion and come into contact with signal terminals of the memory card accommodated in the cartridge are used, and a disc-type card inserter for ejecting the cartridge from the housing.

The disc card inserter is installed in the electronic equipment in the state that the front edge cover portion of the side end in the pull-out direction of the chuck is exposed on the outer surface of the electronic equipment frame, and the chuck is ejected from the casing by the take-out mechanism, and then removed from the equipment frame. The outer side of the body protrudes toward the pull-out direction, and by further pulling it out, the memory card can be moved in and out relative to the chuck outside the electronic device.

As a take-out mechanism, it is equipped with a push-out arm rotatably supported on the inner side of the card insertion and withdrawal direction of the housing. One end of the push-out arm is pushed in by the push rod to rotate the push-out arm, and the other end of the arm pushes the end of the chuck. The inner edge is pushed out toward the discharge direction, and the above-mentioned take-out mechanism is known (for example, refer to Patent Document 1)

In addition, as another take-out mechanism, a push-in/pull-out mechanism using a heart-shaped cam or the like is provided, and the chuck is held at a predetermined position in the housing by the initial card push-in action, and the holding force is released by pushing in again. The push-out spring pushes out toward the pull-out direction, and this take-out mechanism is known (for example, refer to Patent Document 2).

[Patent Document 1] Japanese Patent Laid-Open No. 2008-108695

[Patent Document 2] Japanese Unexamined Patent Publication No. 2003-317861

However, in the above-mentioned prior art, the position of the front edge cover relative to the electronic equipment housing is affected by both the mounting tolerance of the printed wiring board to the electronic equipment housing and the mounting tolerance of the disc card connector to the printed wiring board. The position of the front edge cover arranged on the front edge of the chuck and the exposure hole formed in the electronic device housing deviates, and there is a danger of malfunction in the insertion and extraction of the chuck. Therefore, this mounting work requires high precision, and there are This is a very difficult problem. For this reason, high-performance assembly machines and skilled workers are required in the assembly work, and thus, there is a problem of cost increase.

Contents of the invention

Therefore, the present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide an inexpensive disk card which can be easily positioned when assembled in an electronic device housing.

In order to solve the problems existing in the prior art as described above and achieve the above object, the present invention proposes the following technical solutions:

(1) A disc-type card plug-in, comprising:

Chuck, storage memory card;

a housing having a disc insertion portion inserted into the chuck; and

a plurality of contact points protruding into the disk insertion portion and contacting signal terminals of the memory card housed in the chuck;

The disc type card plug-in is characterized in that:

The above chucks include:

The disk body accommodates the above-mentioned memory card; and

The movable cover is arranged on the side of the tray body in the direction of pulling out the tray, and is provided with a front edge cover, which is exposed to the outer side of the enclosure through an exposure hole formed in the enclosure when installed in the enclosure of the electronic device;

The movable cover is engaged with the disk body so as to be movable in directions of front and rear, left and right, and/or up and down.

(2) In the disc card inserter recorded in the above-mentioned technical solution (1), it is characterized in that:

At one joint end of the tray body or the movable cover, an engagement recess opening toward the other side is provided, and at the other joint end, an engagement protrusion inserted into the engagement recess is provided, A gap for position adjustment is formed between the inner surface of the engaging concave portion and the outer surface of the engaging convex portion.

(3) In the disk type card inserter of above-mentioned technical scheme (2) record, it is characterized in that:

The chuck includes a rod-shaped engaging member supported on either one of the engaging concave portion or the engaging convex portion, and an insertion through hole provided on the other side for inserting the engaging member. A gap for position adjustment is formed between the outer surfaces of parts.

The effect of the present invention is described below:

As mentioned above, the disc card inserter according to the present invention includes: a chuck for accommodating a memory card; a housing having a disc insertion portion inserted into the chuck; contact with the signal terminal of the memory card; the above-mentioned chuck includes: a disk body, which accommodates the above-mentioned memory card; and a movable cover, which is arranged on the side of the disk body in the direction of pulling out the disk. When the housing of the electronic device is exposed to the outer side of the housing through the exposure hole formed in the housing, the movable cover can be moved in front and rear, left and right, and/or up and down directions to engage with the above-mentioned disk body; therefore, it can be easily To ensure the alignment of the electronic equipment frame and the front edge cover of the chuck.

Also, in the present invention, an engaging recess opening toward the other side is provided at the engaging end portion of either the above-mentioned tray body or the above-mentioned movable cover, and at the same time, an engaging recess for inserting the above-mentioned engaging end is provided at the other engaging end portion. The engaging convex portion in the concave portion forms a gap for position adjustment between the inner surface of the engaging concave portion and the outer surface of the engaging convex portion, so alignment in the left-right direction can be appropriately performed.

Furthermore, in the present invention, the above-mentioned chuck includes a rod-shaped engaging member supported on either one of the above-mentioned engaging concave portion or engaging convex portion, and an insertion through hole provided on the other side for inserting the engaging member. A gap for position adjustment is formed between the inner surface of the through hole and the outer surface of the above-mentioned joining member, so alignment in the front-rear direction and the up-down direction can be properly performed.

Description of drawings

Fig. 1(a) is a plan view showing an example of a disc card according to the present invention, and Fig. 1(b) is a bottom view thereof.

Fig. 2 is a longitudinal sectional view of the example in Fig. 1 .

Fig. 3 is an exploded perspective view of the disc card insert.

Fig. 4 is a bottom view showing an example of a memory card.

Fig. 5 is a bottom view showing the chuck in Fig. 1 .

Fig. 6(a) is a plan view showing an example of the movable cover in Fig. 5, and Fig. 6(b) is a side view thereof.

Fig. 7 is a partially enlarged longitudinal sectional view showing a movable cover portion of the chuck shown in Fig. 5 .

8 is a longitudinal sectional view for explaining the pulling-out operation of the chuck according to the present invention, wherein (a) is a state in which the chuck is accommodated in the casing, and (b) is a state in which the movable cover is pulled out.

9 is a partial enlarged plan view of the movable cover of the chuck when the disc card inserter according to the present invention is assembled into an electronic device, wherein (a) indicates a normal state, and (b) indicates a case where the left and right directions deviate.

Fig. 10 is a partially enlarged longitudinal sectional view showing the movable cover part of the chuck of Fig. 9, wherein (a) indicates a normal state, and (b) indicates an occasion where deviation occurs in the up-down and front-back directions.

Fig. 11 is an enlarged longitudinal sectional view showing another embodiment of the chuck shown in Fig. 1, of a movable cover portion.

The meanings of the symbols in the figure are as follows:

A - memory card

10 - Disc card insert

11 - Chuck

12 - Card Insertion Section

13 - Housing

14 - contact

20 - disc body

21 - Front edge cover

22 - Card Storage

24 - anti-off piece

25 - Fitting recess

26 - Shrink recess

27 - wide recess

28 - Ladder

31 - molded shell

32 - protective cover

33 - Avoidance window

35 - top plate

36 - side panel

40－Fixer part

41 - Elastic contact part

42 - Connecting terminal piece part

50 - Movable cover

51 - engagement recess

52 - Engagement protrusion

53 - Support Department

54 - Joining parts

55 - Insert through hole

56 - Front edge cover

57 - horizontal beam

58 - cover body

59 - exposed hole

61 - snapping parts

70 - Ladder

71 - Nail introduction

Detailed ways

Next, the actual form of the disc card inserter according to the present invention will be described with reference to the embodiments shown in FIGS. 1 to 11. However, these are merely examples, and the present invention is not limited thereto.

Symbol 10 among the figure is a disc card plug-in, and symbol A is a memory card such as a flash memory card.

The disc card inserter 10 includes a chuck 11 for accommodating a memory card A, a case 13 having a disc insertion portion 12 inserted into the chuck 11, and a housing 13 protruding into the disc insertion portion 12 for the memory card A accommodated in the chuck 11. A plurality of contact points 14 contacted by the signal terminals a1, a1, ... make the memory card A accommodated in the chuck 11, and in this state, insert the chuck 11 into the disk insertion part 12 to make the signal terminals a1, a1 of the memory card A , ... are in elastic contact with the corresponding contacts 14, 14, ..., so that the memory card A and the printed wiring board are electrically connected through the card insert.

The memory card A is, for example, a compact flash memory card A as shown in FIG. , Narrowed portion Aa with narrow card width.

The narrowing portion Aa is disposed on one side in the card width direction, and on one side of the narrowing portion Aa, a plurality of signal terminals a1, a1, ... are arranged parallel to each other in the card width direction in the direction of the entire length of the card. .

Further, in the memory card A, a protruding thickened portion Ab is formed at the end portion opposite to the narrowed portion Aa in the overall length direction of the card, and on the opposite side to the signal terminal forming surface.

As shown in FIG. 5, the chuck 11 for accommodating the memory card A includes a plate-shaped disk body 20 for accommodating the memory card A and a movable cover 50 arranged at the end of the disk body 20 in the direction of pulling out the disk. 20 and the movable cover body 50 are arranged separately, so that the movable cover body 50 is in a floating state on the disk body 20, that is, joined so as to be able to move forward, backward, left and right, and/or up and down.

Here, the so-called front and rear, left and right, and up and down mean that the disk insertion and removal direction is front and rear, the card slot width direction is left and right, and the card slot thickness direction is up and down.

The disk main body 20 is formed in a flat plate shape from an insulating synthetic resin, and a card storage portion 22 is formed on one surface thereof, and accommodates the memory card A in the direction in which the memory card A is inserted into the disk.

The card storage portion 22 conforms to the outer shape of the memory card A, and is formed in a shape in which one surface of the disk body 20 is recessed so that the signal terminal side of the memory card A is accommodated toward the opening side.

That is, the card housing portion 22 forms a continuous shape with the narrowed concave portion 26 that fits the narrowed portion Aa of the memory card A in the disk insertion direction inner side of the disk body 20 and the widened concave portion 27 that forms a continuous shape. The number 27 is continuously arranged on the side of the narrowing concave portion 26 in the direction in which the disk is pulled out.

In addition, in the amplifying concave portion 27, there is formed a stepped portion 28 for the thickening portion to fit into the thickening portion Ab, which is formed in a shape deeper than other portions. When the memory card A is stored with the signal terminal side facing the opening side, the memory card A It is stored in a stable state lying flat relative to the tray body 20 .

On the other hand, on the side surface of the disk main body 20, there is formed a fitting recess 25 that fits with the anti-off pieces 24 disposed on both sides of the disk insertion portion 12, and is fitted by the fitting protrusions 24a of the anti-off pieces 24. In the fitting recess 25 , the disc body 20 is locked to the housing 13 with a high retaining force, which can limit the movement of the disc body 20 along the pulling-out direction.

Also, at the end portion of the disk main body 20 in the direction of pulling out the disk, that is, at the joint end portion with the movable cover 50, an engaging recess 51 opening toward the side of the movable cover 50 is provided. Some engagement protrusions 52 are inserted into the engagement recesses 51 .

The engagement recess 51 is provided with a pair of support portions 53, 53, which are formed at intervals in the disk width direction of the disk body 20 at the end portion on the side in the disk pull-out direction. The end portion in the pull-out direction of the disk forms a rectangular cutout opening to the side of the movable cover 50 and the side of the thickness of the body.

In addition, the distance between the inner surfaces facing each other in the left-right direction of the engaging concave portion 51 is formed to be wider than the width of the engaging convex portion 52 in the left-right direction, thereby forming a gap between the inner surface of the engaging concave portion 51 and the outer surface of the engaging convex portion. Clearance 62,62 for position adjustment.

The gaps 62 , 62 for position adjustment are determined based on the mounting tolerance of the printed wiring board D to the electronic equipment housing C and the mounting tolerance of the reel card connector 10 to the printed wiring board D, and the like.

The two supporting parts 53, 53 are thicker than other parts of the disc body 20. When the chuck 11 is inserted into the housing 13, the end faces of the supporting parts 53, 53 in the disc insertion direction come into contact with the end face of the housing 13 to stop.

Also, in this engagement recess 51, on the side in the direction of pulling out the disk, the rod-shaped engagement member 54, whose both ends are supported by the two support portions 53, 53, is arranged to bridge between the inner surfaces facing each other of the engagement recess 51. The member 54 is inserted into an insertion through-hole 55 formed in the engagement protrusion 52 .

As shown in FIG. 6, the movable cover 50 is formed of an elastic material such as insulating synthetic resin or rubber, and is integrally provided with an engaging convex portion 52 inserted into the engaging concave portion 51, and a pull-out portion disposed on the engaging convex portion 52. The front edge cover portion 56 at the side end in the direction.

The engagement protrusion 52 has the same thickness as the supporting parts 53, 53, or is formed in a slightly thinner cuboid shape, and at the end in the disk insertion direction, a reduced-thickness insertion part 52a is formed that is thinner than other parts.

The reduced-thickness insertion portion 52 a is formed slightly thinner than the disc body 20 , and serves as an opening into which the disc insertion portion 12 is fitted when the chuck 11 is inserted into the housing 13 .

Further, the engaging convex portion 52 is provided with insertion through-holes 55 opened on both end surfaces in the disk width direction, and the engaging member 54 is inserted into the insertion through-holes 55 .

As shown in FIG. 7 , the insertion through hole 55 is formed to be larger than the outer diameter of the joint member 54, thereby forming an up-down direction for position adjustment between the inner surface of the insertion through hole 55 and the outer surface of the joint member 54. Gaps 63, 63 and a gap 64 in the front-rear direction.

By forming the gaps 62, 63, 64 for position adjustment in this way, the movable cover body 50 is engaged with the disk main body 20 so as to be able to move forward, backward, left and right, and up and down, thereby forming a floating structure.

The movable cover body 50 can be positioned at the normal position as shown in FIG. The inner position in the insertion direction and the predetermined pull-out position as shown in FIG. Swipe to move between locations.

Also, at a predetermined pull-out position, that is, a position where the inner edge 55a of the end portion in the disk insertion direction of the insertion through hole 55 abuts against the engagement member 54 supported on the disk body 20 and is stopped, the engagement member 54 and the insertion through hole 55 are locked. The inner edge 55a of the end portion in the disk insertion direction of the disk insertion direction constitutes a transmission mechanism, and if the force in the disk pull-out direction acts on the movable cover 50, the inner edge 55a of the end portion in the disk insertion direction of the insertion through hole 55 pushes the engaging member 54 toward the disk pull-out direction. Thus, the force acting on the movable cover 50 in the direction of pulling out the disk is transmitted to the disk body 20 through the engaging member 54 .

Therefore, if two fingers are used to grasp the movable cover body 50 and apply a pull-out force above a certain level, that is, a force exceeding the holding force of the disc body 20 relative to the housing 13, the anti-off pieces 24, 24 are elastically deformed, and the holding force is released. , the disk main body 20 can be pulled out from the disk insertion portion 12, and the chuck 11 can be easily pulled out from the casing 13 and the electronic device housing C without using a push rod or the like.

The front edge cover portion 56 includes an elongated plate-shaped horizontal beam portion 57 that is long in the disk width direction integrally formed with the end portion of the engagement protrusion 52 on the side in the pulling direction, and a horizontal beam portion 57 disposed on the side of the horizontal beam portion 57 in the pulling direction side. The thin-plate-shaped cover body 58 is exposed on the outer side of the case through the exposure hole 59 formed in the case C of the electronic device when the disc card 10 is installed in the electronic device.

The cover body 58 is formed larger than the side end surface of the horizontal beam portion 57 in the direction of pulling out the disk, and is integrally supported on one side of the side end surface of the horizontal beam portion 57 in the direction of pulling out the disk. shape.

Also, on both sides of the front edge cover portion 56, that is, at both ends of the horizontal beam portion 57 on the side of the cover body 58 in the disk insertion direction, fitting members 61 are integrally provided. The inner edge of the exposure hole 59 of the electronic device housing C is fitted to prevent the front edge cover 56 from being pulled out due to its own weight or the like.

The holding force generated by the fitting between the fitting member 61 and the inner edge of the exposure hole 59 is smaller than the holding force generated by the fitting between the fall-off prevention piece 24 and the disk main body 20 .

The outer end portion of the fitting member 61 is integrally provided with a protruding portion swelled into an arc shape, and the protruding portion is arranged such that the protruding portion protrudes outward from the outer edge of the cover body 58 .

The casing 13 is composed of a molded case 31 formed by molding an insulating synthetic resin, and a protective cover 32 assembled to cover the upper surface and sides thereof, and on the upper surface of the molded case 31, the disk insertion portion 12 is formed such that the molded case Concave shape on the body 31 is covered by a protective cover 32 on its upper part.

On the molded housing 31, the contacts 14, 14, ... are assembled with the molded housing 31 through insert molding, and are arranged on the inner side of the disk insertion direction of the disk insertion part 12 with the one side of the memory card A. The plurality of contact points 14, 14, . . . to which the signal terminals a1, a1, .

Reference numeral 33 in the figure is a lateral avoidance window formed elongated in the disk width direction through the thickness direction of the bottom plate on the inner side in the disk insertion direction of the bottom of the disk insertion portion 12 .

On the other hand, the protective cover 32 is composed of a flat top plate portion 35 and side plate portions 36, 36 of a shape bent to the side of the mold case 31 on both sides of the top plate portion 35. The top plate portion 35 is connected to the conductive metal The plate is formed by punching and bending.

On both sides of the top plate portion 35, anti-off pieces 24, 24 are formed by cutting and bending, and the two anti-off pieces 24, 24 are arranged on the disk insertion portion 12 by assembling the protective cover 32 to the molded housing 31. both sides of the.

The anti-off piece 24 has a remaining bending line portion 24b, which is cut into a long and thin shape in the direction of disk insertion and extraction, so that it forms a shape bent from the bending line portion 24b to the inner side of the housing 13, and the bending line portion 24b is used as a base point, so that The inner side in the disk insertion direction can be elastically deformed in the width direction of the card insert.

Also, on the anti-off piece 24, an arc-shaped engaging protrusion 24a protruding inward is formed by bending processing. The portion 24a and the fitting recess 25 of the disk body 20 are fitted together to restrict the movement of the disk body 20 relative to the housing 13 in the direction of disk insertion and extraction, so that even if an impact occurs due to the drop of the electronic device, the chuck 11 will not come out of the housing. 13 out.

Contacts 14, 14, ... are formed by punching and bending an elastic conductive metal plate, including a fixed piece 40 fixed to the molded housing 31, and supported on the The elastic contact piece portion 41 of the fixing piece portion 40 is integrally formed.

The fixing piece 40 is integrally assembled on the bottom of the molded case 31 by insert molding, and is arranged and fixed between the inner edge surfaces facing each other in the disk insertion direction of the lateral avoidance window 33 .

In addition, at the inner side contact 14, the fixed piece portion 40 is integrally formed with the connecting terminal piece portion 42 extending in the disk insertion direction continuously arranged. Bonded to the connection pattern formed on the printed wiring board.

The elastic contact piece 41 is formed in a shape inclined from the edge of the fixed piece 40 protruding from the inner edge of the lateral avoidance window 33 toward the inner side of the card inserting direction and the protective cover 32 side, and forms an arc-shaped contact point at its front end. part 41a.

The disk-type card connector 10 thus constituted is fixed on the printed wiring board D, and in this state, is mounted on the housing C of the electronic equipment through the printed wiring board D, and the disk-type card connector 10 is formed on the electronic device The exposure hole 59 of the frame body C and the front edge cover portion 56 are exposed to the outer side of the frame body.

The exposed hole 59 has a concave stepped portion 70 at the outer opening edge of the frame body, and the cover body 58 of the chuck 11 is embedded in the stepped portion 70. on the same plane.

When this mounting is performed, the positional relationship between the exposure hole 59 formed in the electronic equipment housing C and the front edge cover portion 56 is affected by the mounting tolerance of the printed wiring board D relative to the electronic equipment housing C and the relative printed circuit board 10 of the tray card. The installation tolerance of the printed circuit board D is affected by both.

However, in the disc card 10 according to the present invention, the movable cover 50 is joined to the disc body 20 in a state capable of moving forward and backward, left and right, and up and down, that is, in a floating state, so that the front edge cover 56 can absorb The deviation between the designed installation position and the actual installation position of the electronic device housing C can easily make the positions consistent.

For example, with respect to the normal state shown in FIG. 9(a), when the position of the disc card insert 10 deviates to the left relative to the exposure hole 59, as shown in FIG. 9(b), the movable cover is opposite to the disc body 20. The body 50 is relatively moved to the right side, and the deviation is absorbed by the gaps 62 and 62 for position adjustment, so that the front edge cover portion 56 is in an appropriate position relative to the exposure hole 59 .

In addition, relative to the normal state shown in FIG. 10(a), when the position of the disc card insert 10 relative to the exposed hole 59 deviates to the rear side and the upper side, as shown in FIG. 10(b), relative to the disc body 20, The movable cover body 50 relatively moves to the front side and the lower side, and the deviation is absorbed by the gaps 63 and 64 for position adjustment, so that the front edge cover part 56 is in an appropriate position with respect to the exposure hole 59 .

In the above-mentioned embodiment, the example in which the insertion through hole 55 is formed in the shape of a long hole long in the disk insertion direction and the movable cover 50 is pulled out from the disk main body is described, however, as shown in FIG. The hole 55 is formed in a shape that is slightly larger than the outer diameter of the engaging member 54 .

Also, the joint structure of the movable cover relative to the disk body is not limited to the above-mentioned embodiments, as long as the movable cover can move in front and rear, left and right, and/or up and down directions.

Also, in the above-mentioned embodiment, an example in which the rod-shaped joint member is supported on the joint recess and the insertion through hole is formed on the joint protrusion is described, but the present invention is not limited thereto, and the rod-shaped joint member may be supported on the joint, for example. The convex portion, while the insertion through hole is formed in the engagement concave portion.

The shape and structure of each part shown in the above-mentioned embodiments for carrying out the invention are merely examples of implementation of the present invention, and the technical scope of the present invention should not be limited by the above-mentioned embodiments.

Claims (3)

1. a Disc-type plug-in connector, comprising:

Chuck, storage storage card;

Shell, has the dish insertion section of inserting this chuck; And

Multiple contact, outstanding in above-mentioned dish insertion section, contact with the signal terminal of the storage card being accommodated in above-mentioned chuck;

The feature of described Disc-type plug-in connector is:

Above-mentioned chuck comprises:

Dish body, storage said memory card; And

Movable lid, be configured in the dish pull-out direction side of this dish body, it is provided with leading edge cap, when being installed to electronic equipment framework, by being formed in the exposed hole of this framework, is exposed to framework lateral surface;

Make above-mentioned movable cover physical efficiency all around and/or up and down all directions movably with above-mentioned dish body engagement.

2., according to the Disc-type plug-in connector recorded in claim 1, it is characterized in that:

In either party engagement end portion of above-mentioned dish body or above-mentioned movable lid, be provided with towards the coupling recess of the opposing party's side opening, simultaneously, the engagement projection inserted in above-mentioned coupling recess is provided with in the engagement end portion of the opposing party, between the medial surface and the lateral surface of above-mentioned engagement projection of above-mentioned coupling recess, the gap of forming position adjustment.

3., according to the Disc-type plug-in connector recorded in claim 2, it is characterized in that:

Above-mentioned chuck comprises the shaft-like attachment of either party being bearing in above-mentioned coupling recess or engagement projection, and be located at the insertion through hole for inserting these attachment of the opposing party, between the medial surface and the lateral surface of above-mentioned attachment of this insertion through hole, the gap of forming position adjustment.