WO2015098206A1

WO2015098206A1 - Striker

Info

Publication number: WO2015098206A1
Application number: PCT/JP2014/074702
Authority: WO
Inventors: 志村　良治; 田中　聡; 村上　雄也
Original assignee: 三井金属アクト株式会社
Priority date: 2013-12-27
Filing date: 2014-09-18
Publication date: 2015-07-02
Also published as: CN104903529B; JP6349573B2; JP2015124557A; CN104903529A

Abstract

Leg affixation holes (4) which are provided in a base plate (2) comprise tapered hole sections (41) on the front surface side of the base plate (2). Expanded-diameter staked sections (32) on the front surface side of the base plate (2), the expanded-diameter staked section (32) being formed by staking, are received in the tapered hole sections (41) so as not to protrude from the front surface of the base plate (2) and are brought into close contact with the tapered hole sections (41).

Description

Striker

The present invention relates to a striker for an opening and closing member for a motor vehicle, and more particularly to a striker which can be miniaturized.

For example, as described in

Patent Documents

1 and 2, the striker of the opening / closing body for an automobile is an end of both legs of a U-shaped engaging rod formed in a pair of leg fixing holes provided in the base plate. In general, the engaging rod is fixed to the base plate by fitting the upper and lower ends of the leg portion sandwiching the base plate by caulking.

Japan Real Fair 3-27700 Japan Real Fair 6-39013

In each of the strikers described in

Patent Documents

1 and 2 above, the enlarged diameter caulking part on the surface side of the base plate protrudes to the surface side of the base plate, and accordingly, the height from the surface of the base plate in the engaging rod That is, the vertical dimension of the leg portion engaged with the latch of the door latch device becomes long, the striker becomes large, and as a result, the dimension in the thickness direction of the entire door latch device becomes large, which leads to the enlargement of the door latch device It was

An object of the present invention is to provide a striker which can be miniaturized by reducing the height from the surface of a base plate in an engagement rod in view of the above-mentioned subject.

The above problems are solved as follows.
A base plate fixed to a mounting surface of a vehicle, and a substantially U-shaped engaging rod having a pair of leg portions, and an end portion of the two leg portions in a pair of leg fixing holes provided in the base plate In a striker formed by fixing the engagement rod to the base plate by inserting the rod and bringing the diameter-increasing collars formed on the front and back sides of the base plate into close contact with the front and back sides of the base plate. The leg fixing hole includes an enlarged diameter hole on the surface side of the base plate, and in the enlarged diameter hole, the enlarged diameter flange on the surface side of the base plate in the leg does not protrude from the surface of the base plate As you put in close contact.

The diameter-increasing hole may be a tapered hole that gradually expands in diameter toward the surface side of the base plate.

Further, the back surface side of the base plate in the leg fixing hole is a tapered hole which gradually expands in diameter toward the back surface, and the diameter of the back surface of the base plate in the leg is enlarged in the tapered hole on the back surface. The buttocks may be housed and brought into close contact.

In addition, even if the leg fixing hole has a circular hole substantially equal in diameter to the outer diameter of the leg to which the leg fits, on the back surface direction side of the diameter-increased hole on the surface side in the leg fixing hole. Good.

In addition, the peripheral edge portion of the leg fixing hole in the base plate may be bent obliquely toward the back surface side of the base plate, with the thickness of the base plate remaining as it is.

The engagement rod may be made of TRIP steel having transformation induced plasticity of retained austenite.

Further, the diameter-increasing collar portions on the front surface side and the rear surface side of the leg portion may be formed by hot crimping.

Further, the height dimension from the attachment surface of the engagement rod may be smaller than the attachment pitch of the base plate.

According to the present invention, the enlarged diameter flange portion on the surface side of the leg portion is accommodated in the diameter enlarged hole portion provided on the surface side of the base plate in the leg portion fixing hole so as not to project upward from the surface of the base plate. The height of the engaging rod from the surface of the base plate can be reduced, and the striker and the door latch device can be miniaturized.

It is a perspective view of the striker of the 1st Embodiment of this invention. It is a top view of the striker of FIG. FIG. 3 is a longitudinal sectional view taken along line III-III in FIG. It is a side view of the striker of FIG. It is an expanded sectional view of the A section in FIG. It is an expanded sectional view of the same part as FIG. 3 in the striker of the 2nd Embodiment of this invention.

Hereinafter, a striker according to a first embodiment of the present invention will be described based on FIGS. 1 to 5. In the following embodiments, the front side (upper side in FIGS. 3 and 4) of the base plate is referred to as “upper”, and the back side (lower side in FIGS. 3 and 4) as “lower”.
The striker 1 of this embodiment comprises a base plate 2 fixed to a mounting surface D of a vehicle body of an automobile, and a substantially downward U-shaped engaging rod 3 having an opening on the mounting surface D side. The lower end portions of the

leg portions

31 and 31 are fixed to the base plate 2 by a hot caulking process. One of the

legs

31, 31 is engageable with the latch L of the door latch device attached to the side door.

The base plate 2 is formed in a generally elliptical shape in plan view by a hot-rolled steel plate or the like having a predetermined thickness, and the side portion in the central portion on the short diameter side which is the fixing portion of both legs 31 of the engagement rod 3 is substantially A downward U-shaped upward bending portion 21 is formed, and between the upward bending portion 21 and the mounting surface D, on a line connecting both end portions of both leg portions 31, continuously in the left and right directions. An open deformation allowable space S is formed (see FIGS. 3 and 4). When such a deformation allowing space S is formed, when a tensile load in the lateral direction is applied to the engagement rod 3, the base plate 2 squeezes the deformation allowing space S and deforms downward. Transformation is promoted. As a result, the tensile stress acting on the engagement rod 3 is relieved, and the engagement rod 3 is less likely to break.

At both ends of the short diameter side of the base plate 2, that is, at both ends of the upward bending portion 21, leg fixing

holes

4 and 4 for fitting and fixing the lower ends of both leg portions 31 are also provided on the base

plate Mounting holes

5 and 5 into which countersunk screws (not shown) for fixing to the mounting surface D are inserted are bored at both ends of the long diameter side of 2 respectively. The height dimension L2 (see FIG. 4) of the engagement rod 3 is set to be smaller than the attachment pitch L1 (see FIG. 2) of the base plate 2. In this way, the deformation of the base plate 2 is promoted while the miniaturization of the striker 1 is achieved, so that both the miniaturization of the device and the strength can be achieved.

As shown in an enlarged manner in FIG. 5, at the peripheral portion of the

leg fixing holes

4 and 4 in the base plate 2, an inclined bending portion 22 bent downward approximately 45 degrees is formed without changing the plate thickness of the base plate 2. In the upper and lower portions of the leg fixing hole 4 in the inclined bending portion 22, the tapered hole portion 41 of approximately 45 degrees gradually expanding in the upward direction and the diameter gradually expanding in the downward direction, A tapered hole 42 of approximately 45 degrees is formed. Further, a lower end portion of the leg portion 31 is fitted to an intermediate portion in the vertical direction of the leg portion fixing hole 4 between the upper and lower

tapered hole portions

41 and 42, and a straight having substantially the same diameter as the diameter of the leg portion 31 A circular hole 43 is formed. The upper tapered hole portion 41 corresponds to the enlarged diameter hole portion of the present invention.

The engagement rod 3 is formed of chromium-molybdenum steel (SCM material). In addition, a low alloy TRIP steel having transformation induced plasticity (TRIP) of retained austenite, for example, a rod made of SUS304 in JIS which is a relatively inexpensive and metastable austenitic stainless steel, is substantially coplanar by pressing or the like. It may be bent in a letter shape. The stainless steel made of SUS304 in JIS corresponds to the international standard (ISO): TS15510L-No6. Note that the contents of ISO: TS15510L-No 6 are incorporated herein as a reference.

Lower end portions of the leg portions 31 of the engagement rod 3 are inserted into the leg fixing holes 4 to plastically deform the upper and lower portions of the both leg portions 31 penetrating from the leg fixing holes 4 by hot caulking. Thus, on the upper and lower portions of the leg portion 31 sandwiching the base plate 2, an upper enlarged diameter caulking portion 32 and a lower enlarged diameter caulking portion 33 as an enlarged diameter collar portion larger in diameter than the outer diameter thereof are formed. The upper diameter enlarged flange portion may be provided in advance on the engagement rod 3 by header processing or the like.

At the time of this caulking process, the upper diameter expanded crimped portion 32 is made to plastically flow in the upper tapered hole portion 41 and closely adhered, and the upper half portion of the lower expanded diameter crimped portion 33 is inserted into the lower tapered hole portion 42. Both legs 31 of the engagement rod 3 are firmly fixed to the leg fixing holes 4 of the base plate 2 by plastic flow and adhesion. Under the present circumstances, as shown to the enlarged view of FIG. 5, the upper side diameter expansion caulking part 32 is diameter-expanded to the magnitude | size and shape which do not protrude above the upper surface of the base plate 2, and the upper side diameter expansion caulking part 32 whole is a taper of an upper part. It is accommodated in the hole 41.

Thus, when the upper and lower diameter expanded crimped

portions

32 and 33 are formed by hot caulking, the upper diameter expanded crimped portion 32 and the lower expanded diameter caulking portion 33 have plasticity in the upper and lower

tapered hole portions

41 and 42. It becomes easy to flow and can be strongly adhered to the inner surface of these holes. The caulking operation is preferably performed by hot caulking as described above, but may be performed by warm or cold caulking.

As described above, in the striker 1 according to the first embodiment, the upper portion of the leg fixing hole 4 is a tapered hole 41 which gradually increases in diameter toward the upper side. Since the upper enlarged diameter caulking portion 32 formed by the hot caulking processing of the portion 31 is accommodated so as not to protrude above the upper surface of the base plate 2, the upper and lower dimensions of the leg portion 31, ie, the base plate of the engagement rod 3 The height from the surface of 2 can be made smaller than that of the conventional striker, and the striker 1 can be miniaturized.
As described above, when the height from the surface of the base plate 2 in the engagement rod 3 is reduced, the dimension in the thickness direction of the door latch device engaged with the engagement rod 3 can also be reduced. It is possible to

Further, the upper and lower portions of the leg fixing hole 4 are respectively a tapered hole 41 which is gradually enlarged in the upper direction and a tapered hole 42 which is gradually expanded in the downward direction. The upper fixed diameter caulking portion 32 and the lower enlarged diameter caulking portion 33 formed by hot caulking are accommodated and brought into close contact with each other, and the leg fixing hole 4 and the upper and lower enlarged diameter caulking

portions

32 and 33 are formed. A large contact area can be secured, and a high resistance to a tensile load acting on the engagement rod 3 in a radial direction is exerted, and the leg portion 31 becomes difficult to tilt, and the rattling of the engagement rod 3 is suppressed. be able to.
Therefore, even if the plate thickness of the base plate 2 is reduced, the contact area between the leg fixing hole 4 and the upper and lower enlarged

diameter caulking portions

32 and 33 can be sufficiently and sufficiently secured.

Further, a straight circular hole 43 substantially equal in diameter to the outer diameter of the lower end of the leg 31 is formed in the vertical middle of the leg fixing hole 4, and this circular hole is formed. The lower end of the leg 31 is inserted into the portion 43 so that the lower end of the leg 31 is in surface contact, so that the leg 31 is more difficult to tilt when a tensile load in the radial direction is applied to the engagement rod 3.

When a large upward load is applied to the engagement rod 3 by forming the inclined bending portion 22 facing obliquely downward on the peripheral edge portion of the leg fixing holes 4 in the base plate 2, the inclined bending portion 22 faces upward That is, since the plastic deformation is made in the direction in which the hole diameter of the leg fixing hole 4 is made smaller, the lower enlarged diameter caulking portion 33 is less likely to be separated from the leg fixing hole 4.

The engaging rod 3 is made of low alloy TRIP steel having transformation induced plasticity of retained austenite, that is, SUS304 in JIS which is an austenitic stainless steel, and is bent in a U shape by press working or the like. The

bent portions

34, 34 of the joint rod 3 partially transform into a hard martensitic phase by the transformation-induced plastic effect of retained austenite, and the tensile strength of the portion is increased. In addition, since the austenite phase of the bent portion 34 partially remains, the bent portion 34 also has ductility (toughness), and it becomes difficult to break.

The present invention has been described above by taking the striker 1 of the first embodiment as an example, but the present invention performs the following modifications or changes to the above embodiment without departing from the scope of the invention. It is possible.
FIG. 6 shows an enlarged cross-sectional view of the main part of the striker of the second embodiment, omitting the inclined bending portion 22 as in the first embodiment and only at the upper part of the leg fixing hole 4. A tapered hole 41 with an approximately 45 degree diameter gradually increasing upward is provided. Further, a portion below the tapered hole portion 41 in the leg fixing hole 4 is a circular hole portion 43 having substantially the same diameter as the outer diameter of the leg portion 31.

By inserting the lower end portion of the leg portion 31 into the leg portion fixing hole 4 and subjecting it to hot caulking, the upper diameter expanded caulking portion 32 is inserted into the tapered hole portion 41 in the same manner as the first embodiment The lower diameter enlarged crimped portion 33 is in close contact with the lower surface of the base plate 2 adjacent to the leg fixing hole 4 so as not to project upward from the upper surface of the lower portion.
Also in the striker according to the second embodiment, the upper diameter enlarged crimped portion 32 formed by hot crimping is accommodated in the upper tapered hole portion 41 so as not to protrude above the upper surface of the base plate 2 Accordingly, the vertical dimension of the leg 31, that is, the height of the engagement rod 3 from the surface of the base plate 2 can be reduced, and the striker 1 can be miniaturized.

In each of the first and second embodiments, the upper portion of the leg fixing hole 4 is formed as the tapered hole 41 which gradually increases in diameter toward the upper side, that is, the surface side of the base plate 2. As the diameter hole portion, the upper diameter enlarged crimped portion 32 may be accommodated in the diameter expansion hole portion. In addition, the lower tapered hole portion 42 in the first embodiment may also be an enlarged diameter hole portion of the downward concave cross section.

The present invention can be applied to strikers such as the above-mentioned side door, back door, bonnet, trunk lid and the like.

Although the invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. This application is based on Japanese Patent Application (Japanese Patent Application No. 2013-270735) filed on December 27, 2013, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 striker 2 base plate 3 engagement rod 4 leg fixing hole 5 attachment hole 21 upward bending portion 22 inclined bending portion 31 leg portion 32 upper diameter widening caulking portion (expanded diameter portion)
33 Lower side enlarged diameter caulking part (expanded diameter part)
34 Tapered hole at the upper part of the bent part 41 (diameter enlarged hole)
42 Lower tapered hole 43 Circular hole D Mounting surface L Latch L1 Mounting pitch L2 Height dimension S Deformable space

Claims

A base plate fixed to a mounting surface of a vehicle, and a substantially U-shaped engaging rod having a pair of leg portions, and an end portion of the two leg portions in a pair of leg fixing holes provided in the base plate In a striker formed by fixing the engagement rod to the base plate by inserting the rod and bringing the diameter-increasing collars formed on the front and back sides of the base plate into close contact with the front and back sides of the base plate.
The leg fixing hole includes an enlarged diameter hole on the surface side of the base plate, and in the enlarged diameter hole, the enlarged diameter flange on the surface side of the base plate in the leg does not protrude from the surface of the base plate A striker characterized in that it was housed and adhered closely.
The striker according to claim 1, wherein the diameter-increasing hole portion is a tapered hole portion gradually diameter-expanding toward the surface side of the base plate.
The back surface side of the base plate in the leg fixing hole is a tapered hole portion gradually expanding in the back surface direction, and the tapered hole portion on the back surface side is an enlarged flange portion on the back surface side of the base plate in the leg portion. The striker according to claim 1 or 2, wherein the striker is housed in close contact.
The leg fixing hole is characterized by having a circular hole substantially equal in diameter to the outer diameter of the leg to which the leg fits, on the back surface direction side of the diameter-increased hole on the surface side in the leg fixing hole. The striker according to any one of claims 1 to 3.
5. The peripheral edge portion of the leg fixing hole in the base plate is bent obliquely toward the back surface side of the base plate while keeping the thickness of the base plate as it is. Description striker.
The striker according to any one of claims 1 to 5, wherein the engagement rod is made of TRIP steel having transformation induced plasticity of retained austenite.
The striker according to any one of claims 1 to 6, wherein the enlarged diameter flange portion on the front surface side and the back surface side of the leg portion is formed by hot crimping.
The striker according to any one of claims 1 to 7, wherein a height dimension from the attachment surface of the engagement rod is smaller than an attachment pitch of the base plate.