JP2010052475A - Locking fitting and method for manufacturing locking fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking fitting allowing easy connection while improving the strength of the connecting parts between ends of both leg parts and a locking plate than ever, and to provide a method for manufacturing this locking fitting. <P>SOLUTION: This striker 10 is provided with a hook member 11 made by bending a rod-like member in an approximate U-shape, and the plate-like plate member 12 with both leg parts 11a in the approximate U-shape of the hook member 11 fixed therein. In the hook member 11, flanges 11b are formed in the middle of the both leg parts 11a in the longitudinal direction. On the other hand, in the plate member 12, attachment hole parts 12a for attaching the leg parts 11a are formed on one side protrudingly, and thus, the internal spaces 12b of the attachment hole parts 12a are formed in a shape tapered toward the front end in a protruded direction. The both leg parts 11a are inserted in the attachment hole parts 12a, and the flange parts 11b abut on the front ends of the attachment hole parts 12a, and moreover, the front end sides of the leg parts 11a relative to the flange parts 11b are caulked in the internal spaces 12b of the attachment hole parts 12a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a locking fitting used for a locking device for an opening / closing body, for example, a locking fitting used as a striker for a locking device for an opening / closing door (opening / closing body) such as a passenger compartment, an engine room or a trunk in an automobile, and The present invention relates to a manufacturing method of the locking metal fitting.

In general, a striker as this type of “locking metal fitting” is paired with an engaging claw operated by an operator such as a lever as shown in FIGS. 26 and 27, and has a circular or square cross-sectional shape. The rods (rods) are bent in a substantially U-shape by the horizontal locking rods 2 and the leg portions 3 connected to both ends thereof, and the ends of both leg portions 3 are connected to the locking plates 5. They are connected by welding or other means (see Patent Document 1 and Patent Document 2).
Japanese Patent Laid-Open No. 06-31670 JP 2002-337743 A

  However, in such a conventional one, the end portions of both leg portions 3 are welded to the locking plate 5, but it is not easy to ensure the strength of the welded portion, and the welding work There is a problem that it is difficult.

  Therefore, the present invention can improve the strength of the connecting portion between the end portions of both leg portions and the locking plate as compared with the related art, and a locking metal fitting that can be easily connected, and a method of manufacturing the locking metal fitting. It is an issue to provide.

  The invention according to claim 1 has a hook member in which the rod-like member is bent in a substantially U shape, and a plate-like plate member to which both substantially U-shaped leg portions of the hook member are fixed, The hook member is formed with a flange partway in the longitudinal direction of the both leg parts, while the plate member is formed with a mounting hole part to which the leg part is attached protruding to one side, The inner space of the mounting hole is formed in a taper shape as it goes to the front end in the protruding direction, the both leg portions are inserted into the mounting hole, and the flange portion is in contact with the front end of the mounting hole. At the same time, the front end portion side of the leg portion of the leg portion is a locking fitting that is crimped in the internal space of the mounting hole portion.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the hook member is formed by forging, and the flange portion is formed by compressing the leg portion in the axial direction. And

  Invention of Claim 3 is a manufacturing method of the latching metal fitting of Claim 1 or 2, Comprising: The said hook member bends the 1st rod-shaped member in the shape of an approximately U shape, and forges, The distal end side is compressed from a predetermined position of the both leg portions to form the flange portion, while the plate member is formed by plastic working the second rod-like member near the central portion in the axial direction from the vicinity of both end portions. Next, the plate member is formed to be thick and then compressed from the direction orthogonal to the axial direction to form a plate shape, and then the attachment hole portion is formed. It is characterized in that it is a method of manufacturing a locking metal fitting for fixing the hook member to the plate member by inserting and crimping into the mounting hole portion.

  The invention described in claim 4 is characterized in that, in addition to the structure described in claim 3, the plastic working is forging.

  The invention according to claim 5 is characterized in that, in addition to the structure according to claim 3, the plastic working is rolling.

  According to the invention described in each of the above claims, the hook member is formed with the flange partway in the longitudinal direction of the both leg parts, while the plate member has the mounting hole part to which the leg part is attached on one side. By projecting, the inner space of the mounting hole is formed in a tapered shape toward the front end in the projecting direction, both legs are inserted into the mounting hole, and the flange is brought into contact with the front end of the mounting hole. In addition to being in contact with each other, since the front end portion of the leg portion is crimped in the interior space of the mounting hole portion, the strength of the connecting portion between the end portions of the both leg portions and the plate member is improved. And can be easily connected.

  According to the second aspect of the present invention, the hook member is formed by forging, and the hook portion is formed by compressing the leg portion in the axial direction. Therefore, the hook portion can be formed more easily.

  According to the invention described in claim 3, since both the hook member and the plate member are formed from a rod-like member by plastic working, the yield is good without punching as in the prior art.

  According to the fourth aspect of the present invention, since both the hook member and the plate member are formed by forging from a rod-shaped member, the yield is good without punching as in the prior art.

  According to the invention described in claim 5, since both the hook member and the plate member are formed by rolling from a rod-shaped member, the yield is good without punching as in the prior art.

Embodiments of the present invention will be described below.
Embodiment 1 of the Invention

  1 to 24 show an embodiment of the present invention.

  First, the configuration will be described. Reference numeral 10 in FIG. 1 denotes a striker as a “locking metal fitting”. The latch is disengaged.

  Specifically, the striker 10 includes a hook member 11 in which a rod-like member is formed in a substantially U shape, and a plate-like plate member 12 to which both substantially U-shaped leg portions 11a of the hook member 11 are fixed. have.

  The hook member 11 is formed with flanges 11b on both leg portions 11a by forging.

  On the other hand, the plate member 11 is formed into a generally rhombus shape in plan view by forging, and a pair of mounting hole portions 12a to which the pair of leg portions 11a are attached is subjected to burring, so that one side (upper surface side) is formed. As shown in FIG. 2B, the inner space 12b of the mounting hole 12a is formed in a tapered shape as it goes to the front end in the protruding direction. Also, countersunk bolt insertion holes 12c for attachment to the vehicle body are formed at both ends of the substantially rhombic shape in the longitudinal direction. Further, a thin portion 12e for weight reduction is provided at the center of the plate member 11.

  And these both leg parts 11a are inserted in the attachment hole part 12a, and while the collar part 11b is contact | abutted to the front-end | tip of the attachment hole part 12a, the front-end | tip part 11c side is crimped from the collar part 11b of the leg part 11a. (See FIG. 2 (b)). The tip portion 11c is shortened to fill the tapered internal space 12b, the diameter of the tip portion 11c is increased, and the end surface 11d of the tip portion 11c is connected to the back surface 12d of the plate member 12. It is substantially flush (see FIG. 2 (b)).

  Thereby, the hook member 11 is fixed to the plate member 12, and the striker 10 is comprised. Bolts (not shown) are inserted into the bolt insertion holes 12c of the plate member 12, and are attached to the pillars of the vehicle body.

  Next, a method for manufacturing the striker 10 will be described.

  First, the case where the hook member 11 is manufactured using a crank press machine will be described.

  As shown in FIG. 5, the first rod-shaped member 16 made of iron is cut into a predetermined length, and then, as shown in FIGS. 6 to 8, a first rod-shaped member is used by using a bending die 17 and a bending punch 18. The member 16 is bent into a substantially U shape.

  First, the bending punch 18 is lowered from the state shown in FIG. 6, and the first rod-like member 16 is bent as shown in FIG. Next, the spring pin 19 is raised from the state of FIG. 7, and the first rod-like member 16 bent into a U-shape is taken out as shown in FIG.

  Next, from the state shown in FIG. 9, the split mold 21 divided into the left and right is moved in the direction of the arrow, and the first rod-shaped member 16 is sandwiched between the split molds 21.

  Thereafter, the upper die 22 is lowered from the state shown in FIG. 10, and the pair of pressing pins 23 are lowered from the state where the upper die 22 is brought into contact with the split die 21 as shown in FIG. The flange portion 11b is formed by the flange forming portion 21a of the split mold 21 by pressing the portion that becomes the leg portion 11a of the first rod-like member 16 in the axial direction and forging.

  Next, as shown in FIG. 12, the upper die 22 is raised, the split die 21 is separated from the left and right, and the molded hook member 11 is taken out by the jump pin 24.

  Next, the case where the plate member 12 is manufactured will be described.

  First, as shown in FIG. 13, the second rod-shaped member 27 made of iron is cut into a predetermined length, and then, as shown in FIGS. 14 to 16, the lower die 28 and the upper die 29 are used. Thus, the second rod-shaped member 27 is formed in a substantially spindle shape.

  First, the upper die 29 is lowered from the state shown in FIG. 14, and the second rod-shaped member 27 is compressed in the axial direction by forging (plastic processing) as shown in FIG. Is formed thicker from the vicinity of both ends and compressed into a substantially spindle shape. Next, the upper die 29 is raised from the state of FIG. 15 and, as shown in FIG. 16, the spring pin 30 is raised to take out the semi-finished product 33 formed in a spindle shape.

  Next, the semi-finished product 33 is formed into a plate shape using a crank press, and burring is performed.

  That is, the upper die 35 is lowered from the state shown in FIG. 17, and the semi-finished product 33 is compressed from the direction perpendicular to the axial direction by forging with the upper die 35 and the lower die 36 as shown in FIG. And formed into a plate shape having a thin portion 12e. Thereafter, the upper die 35 is raised, and the plate-shaped semi-finished product 33 is taken out by the jumping pin 37.

  Next, from the state shown in FIG. 19, the punch 40 provided with the scraping pin 39 is lowered, and the small hole punch 42 provided in the lower die 41 is used to attach the plate-shaped semi-finished product 33 to the plate member 12. The lower hole is processed at a position corresponding to the portion 12a and the bolt insertion hole 12c. As shown in FIG. 20, when the lower hole is made in the semi-finished product 33 by the small hole punch 42, the dregs pin 39 rises.

  Thereafter, the punch 40 is raised and the ejector 44 is raised by the spring pin 43 to take out the semi-finished product 33 in which the prepared hole is formed.

  Thereafter, as shown in FIG. 21, the punch 47 provided with the imposition punch 46 is lowered, and the imposition punch 46 performs imposition at a position corresponding to the bolt insertion hole 12 c and the lower die 48. The burring punch 49 provided in the burring process is performed on the plate-shaped semi-finished product 33 at a predetermined position of the plate member 12 to form the mounting hole 12a (see FIG. 22).

  Thereafter, the punch 47 is raised and the ejector 51 is raised by the jump pin 50 to take out the semi-finished product 33 in which the prepared hole is formed.

  Next, from the state shown in FIG. 23, the movable punch 56 having the pressure receiving pin 54, the punching punch 55, and the forming punch 59 is lowered to form the bolt insertion hole 12c by the punching punch 55, and the forming punch. 59, the shape of the tip of the mounting hole 12a is formed into a predetermined shape without burrs or the like (see FIG. 24).

  Thereafter, the movable punch 56 is raised, and the molded plate member 12 is taken out by the spring pin 57 provided on the lower die 58.

  Next, the hook member 11 and the plate member 12 formed as described above are fixed.

  That is, as shown in FIG. 2A, the tip end portion 11c of the hook member 11 is inserted into the mounting hole portion 12a of the plate member 12, and the flange portion 11b of the hook member 11 is inserted into the tip end of the mounting hole portion 12a. Make contact.

  In this state, the tip portion 11c of the hook member 11 is crimped, and the tip portion 11c is filled in the internal space 12b of the mounting hole portion 12a as shown in FIG. 2 (b).

  As a result, the hook member 11 and the plate member 12 are fixed in a state in which the hook member 11 is prevented from being detached from the plate member 12 and the hook member 11 is prevented from falling over the plate member 12.

  In this way, the internal space 12b of the mounting hole 12a of the plate member 12 is tapered, and the tip 11c of the leg 11a is inserted into the mounting hole 12a and caulked to thereby fit inside the internal space 12b. Since the distal end portion 11c of the leg portion 11a is crimped and filled, and the diameter of the distal end portion 11c is increased, the strength of the connecting portion between the end portions of the both leg portions 11a and the plate member 12 is improved as compared with the prior art. And can be easily connected.

  Further, the hook member 11 is formed by forging, and the flange portion 11b is formed by compressing the leg portion 11a in the axial direction. Therefore, the flange portion 11b can be formed more easily.

  Furthermore, since both the hook member 11 and the plate member 12 are formed by forging from the rod-like members 16 and 27, the yield is good without punching as in the prior art.

  In the above-described embodiment, the “locking bracket” of the present invention is applied to a striker of a vehicle. However, the present invention is not limited to this and can be applied to other parts.

  Moreover, in the said embodiment, although the attachment hole part 12a of the plate member 12 was formed by the burring process, it is not restricted to this, For example, the attachment hole part 12a which has the internal space 12b by forging using an upper and lower type | mold. Can also be formed.

  Furthermore, in order to form the substantially spindle-shaped semi-finished product 33 from the second rod-shaped member 27, in the above embodiment, as shown in FIGS. 14 to 16, the second rod-shaped member 27 is compressed in the axial direction. However, the present invention is not limited to this, and the semi-finished product 33 can be formed by rolling (plastic working) as shown in FIG. That is, first, as shown in FIG. 25 (a), the second rod-shaped member 27 is set between the rolling fixing die 62 and the rolling slide die 63, and then, FIG. As shown in c), the rolling slide die 63 is sequentially slid in the direction of the arrow to gradually bring the shape of the second rod-shaped member 27 closer to a substantially spindle shape. Then, as shown in FIG. 25 (d), when the slide of the rolling slide die 63 is completed, a substantially spindle-shaped semi-finished product 33 can be formed.

It is a top view which shows the striker which concerns on embodiment of this invention. It is sectional drawing which follows the AA line of FIG. 1 which concerns on the same embodiment, (a) is sectional drawing which shows the state before crimping of the leg part of a hook member, (b) is the state after crimping of the leg part FIG. It is a figure which shows the hook member which concerns on the embodiment, (a) is a front view, (b) is a right view of (a). It is a figure which shows the plate member which concerns on the embodiment, (a) is a front view, (b) is sectional drawing which follows the BB line of (a). It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows a 1st rod-shaped member. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state before bend | folding a 1st rod-shaped member in U shape. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state which bent the 1st rod-shaped member in the U-shape. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state which took out the 1st rod-shaped member bent in the U shape. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is sectional drawing which shows the state just before clamping the 1st rod-shaped member bent in the U shape with a pair of split type | mold. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state just before shape | molding the collar part of a 1st rod-shaped member. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state which shape | molded the collar part of the 1st rod-shaped member. It is a figure which shows the manufacturing method of the hook member which concerns on the embodiment, and is a figure which shows the state which took out the shape | molded hook member. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows a 2nd rod-shaped member. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state before shape | molding a 2nd rod-shaped member in a substantially spindle shape. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which shape | molded the 2nd rod-shaped member in the substantially spindle shape. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which took out the 2nd rod-shaped member shape | molded by the substantially spindle shape. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state before shape | molding the 2nd rod-shaped member shape | molded by the substantially spindle shape in plate shape. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which shape | molded the 2nd rod-shaped member shape | molded in the substantially spindle shape in plate shape. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state before opening a pilot hole. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which opened the pilot hole. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state before performing burring process and imposition. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which performed the burring process and imposition. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state before performing hole finishing. It is a figure which shows the manufacturing method of the plate member which concerns on the embodiment, and is a figure which shows the state which performed hole finishing. It is explanatory drawing which shows a modification. It is a top view which shows the conventional latching metal fitting. It is a front view which shows the conventional latching metal fitting.

Explanation of symbols

10 Striker (locking bracket)
11 Hook member
11a Leg
11b
11c Tip
11d end face
12 Plate material
12a Mounting hole
12b Meat
12c Bolt insertion hole
16 First rod-shaped member
27 Second rod-shaped member

Claims (5)

A hook member in which the rod-like member is bent in a substantially U shape, and a plate-like plate member to which both substantially U-shaped leg portions of the hook member are fixed,
In the hook member, a flange is formed in the middle of the longitudinal direction of the both leg portions, while in the plate member, an attachment hole portion to which the leg portion is attached is formed so as to protrude to one side, The inner space of the mounting hole is formed in a tapered shape as it goes to the front end in the protruding direction,
The both leg portions are inserted into the attachment hole portion, the flange portion is brought into contact with the distal end portion of the attachment hole portion, and the distal end side of the leg portion from the flange portion is the inside of the attachment hole portion. A locking bracket characterized by being caulked in the space.   2. The locking metal fitting according to claim 1, wherein the hook member is formed by forging, and the flange portion is formed by compressing the leg portion in an axial direction. It is a manufacturing method of the latch metal fitting according to claim 1 or 2,
The hook member bends the first rod-shaped member into a substantially U-shape, and then forges to compress the tip end side from a predetermined position of the both leg portions to form the flange portion,
On the other hand, the plate member is formed into a plate shape by forming the second rod-like member thicker near the center in the axial direction than near both ends by plastic working, and then compressing from the direction orthogonal to the axial direction. And then forming the mounting hole,
Next, the hook member is fixed to the plate member by inserting and crimping the front end side of the leg portion of the leg portion into the mounting hole portion of the plate member. Method.   The method for manufacturing a locking metal fitting according to claim 3, wherein the plastic working is forging.   The method for manufacturing a locking metal fitting according to claim 3, wherein the plastic working is rolling.

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