JP5046839B2 - Locking metal fitting and manufacturing method of the locking metal fitting - Google Patents

Description

  The present invention relates to a locking metal fitting used for a locking device for an opening / closing body, for example, a locking metal fitting used for a striker of 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. The present invention relates to a manufacturing method of a locking metal fitting.

  Generally, a striker as this type of “locking bracket” is paired with an engaging claw operated by an operator such as a key or a lever as shown in FIGS. 25 and 26, and has a circular cross-sectional shape. Alternatively, a square steel bar (rod) is bent to form a substantially U-shape by a horizontal locking rod 2 and leg portions 3 connected to both ends thereof. It is connected to the locking plate 5 by welding or other means (see Patent Document 1 and Patent Document 2).

  However, in the production, in addition to the step of forming the locking rod 2 by bending a steel bar, the locking plate 5 made of a plate material is press-molded, or the locking rod 2 and the locking plate 5 This requires not only a large number of processes but also different types of processing processes, which complicates the manufacturing process and raises production costs.

As an improvement measure, there has also been proposed that the engagement rod is not a bar, but is manufactured by pressing from a plate material together with a mounting plate (see Patent Document 3). However, the striker has a plurality of engagement rods. However, there is a problem that requires a process for joining them so that they are not separated.
Japanese Patent Publication No. 06-312670 JP 2002-337743 A Japanese Unexamined Patent Publication No. 07-229345

  However, in such a conventional apparatus, since the striker is composed of a plurality of parts, it is necessary to increase the number of parts, the number of mounting steps, etc., and to secure the strength of the mounting parts of the plurality of parts. .

  Therefore, the present invention relates to a locking metal fitting that can reduce the number of parts and the number of mounting steps, and can ensure strength, and a method of manufacturing the locking metal fitting.

The invention according to claim 1 is substantially formed from a base part of a pair of leg parts of the gate-shaped collar part integrally formed from a continuous metal bar member and bent into a substantially portal-shaped collar part. And a base part that is bent at a right angle and extends on both sides across a plane including the portal shape, and at least a part of the base part is formed flat and is attached to another member. A mounting hole is formed in the mounting portion, and is a locking bracket used for a striker of an automobile opening / closing body, wherein the base portion is an extension portion further extended from the mounting portion The locking bracket is formed with a locking portion that is locked to the base end portion of the pair of leg portions at the distal end portion of the extension portion.

According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the engaging portion is formed with a fitting concave portion into which the base end portions of the pair of leg portions are fitted. And

The invention according to claim 3 is characterized in that, in addition to the configuration according to claim 1 or 2, the attachment portion is formed flat by pressing from a swollen shape than other rod-shaped portions. To do.

According to a fourth aspect of the present invention, in addition to the configuration according to any one of the first to third aspects, the base portion is entirely formed by compression molding to be flat .

According to a fifth aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, a plurality of protrusions are formed on the attachment portion on the contact surface side with the other member. It is characterized by.

The invention according to claim 6 is formed from a continuous metal bar member, and is substantially formed from a base part of a pair of leg parts of a pair of leg parts of the gate type hook part, which is integrally molded and bent into a gate shape. And a base part that is bent at a right angle and extends on both sides across a plane including the portal shape, and at least a part of the base part is formed flat and is attached to another member. In the method of manufacturing a locking metal fitting used in a striker of an automobile opening / closing body, a single metal rod member having a predetermined length is formed in the mounting portion. The base part is formed by bending it into a substantially gate shape, and bent from the base end part of the leg part of the base part in a direction substantially opposite to each other to form a base part. Thereafter, at least one of the base parts is formed. The flat mounting portion is formed by compressing a portion, and the pair of mounting portions are flat surfaces including the portal shape. Nde is characterized in that the method for producing a locking bracket which is formed on both sides with each other.

According to a seventh aspect of the present invention, in addition to the configuration according to the sixth aspect, a pair of bulge portions bulging from other portions are formed at predetermined positions of the bar members on both sides of the substantially portal shape, and the bar members The base part is formed by bending the base part in the opposite direction from each other at a substantially right angle, and then the bulge part is compressed to form the flat attachment part, and the attachment part has a plane including the gate shape. It is characterized in that it is formed on both sides with a sandwich .

According to an eighth aspect of the present invention, in addition to the configuration according to the seventh aspect , a locking portion is formed in a portion extended from the bulging portion of the base portion, and a fitting recess is formed in the locking portion. The fitting recess is fitted to the base end portion of the leg portion of the substantially portal-shaped collar portion .

  According to the above invention, the hook part integrally formed from a continuous metal rod member and bent into a substantially gate shape and the base end part of the pair of leg parts of the gate type hook part are folded at a substantially right angle. And a base portion that is bent and extends on both sides across a plane including the gate shape. At least a part of the base portion is formed flat, and an attachment portion that is attached to another member is formed. Since the locking metal fitting is used, the number of parts and the number of mounting steps can be reduced, the strength can be secured, and the mounting portion can be formed flat to ensure the ease of mounting.

  In addition, the base part has an extension part that is further extended from the mounting part, and the locking part that is locked to both ends of the collar part is formed at the tip part of the extension part, ensuring the strength of the entire base part can do.

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

  1 to 6 show a first embodiment of the present invention.

  First, the configuration will be described. Reference numeral 10 in FIG. 1 denotes a striker as a “locking bracket” of an automobile door as an “automobile opening / closing body”. The striker 10 is integrally formed from a continuous metal bar member, A ridge 11 bent into a gate shape (substantially U-shaped here) and a plane including the gate shape that is bent substantially at right angles from the base end portions of the pair of leg portions 11a of the gate-shaped ridge portion 11 And a base portion 12 extending on both sides with respect to each other.

  The flange portion 11 includes a pair of leg portions 11a and a locking rod 11b that extends over the leg portions 11a and extends in parallel with a mounting surface (not shown) on the vehicle body side.

  Further, the base portion 12 is formed with a flat tip portion (at least a part), and a pair of attachment portions 12a attached to other members (an attachment surface on the vehicle body side) not shown. These mounting portions 12a are formed into a circular shape by forming a spherical bulge portion at both ends of a bar, and a bolt hole 12b is formed in the center thereof.

  Since the striker 10 is made by bending a single material into a required shape in this way, it is easy to manufacture because it does not require machining or welding operations in the manufacturing process. In addition, since chips and other useless materials are not discharged during the molding process, the yield of the materials can be improved and the production can be made at a low cost.

  In addition, innumerable chevron-shaped quadrangular pyramid-shaped protrusions 12c are formed on the back surface of the mounting portion 12a, that is, the surface in contact with the mounting surface on the vehicle body side.

Therefore, when a bolt (not shown) is passed through the bolt hole 12b and screwed into a welding nut (not shown) provided on the mounting surface on the vehicle body, the back surface of the mounting portion 12a is brought to the mounting surface on the vehicle body side. Even if there is a slight inclination with respect to the face, the tip of the quadrangular pyramid-shaped protrusion 12c in the strongly contacted portion is crushed and lowered as the bolt is tightened. For this reason, even if the inclination of the mounting portion 12a is not largely corrected, the entire surface comes into contact, and the surface pressure at the time of fastening is stabilized, so that there is no loosening of the bolt.
[Embodiment 2 of the Invention]

  7 to 12 show a second embodiment of the present invention.

  In the second embodiment, reference numeral 10 in FIG. 1 denotes a striker that is a “locking bracket” of an automobile door. This striker 10 is integrally formed from a continuous metal bar member and bent into a substantially gate shape. A flange portion 11 and base portions 12 that are bent at substantially right angles from both ends (gate-shaped base end portions) of the gate-shaped flange portion 11 and extend to both sides across a plane including the gate shape. Have.

  The flange portion 11 includes a pair of leg portions 11a and a locking rod 11b that extends over the leg portions 11a and extends in parallel with a mounting surface (not shown) on the vehicle body side.

  In addition, the base portion 12 is entirely formed by compression molding and is formed into a flat shape, and a pair of attachment portions 12a attached to other members (an attachment surface on the vehicle body side) not shown is formed. These attachment portions 12a are formed into a circular shape by forming a spherical bulge portion 13b shown in FIG. 12 in the middle, and a bolt hole 12b is formed in the center thereof.

  Further, the base portion 12 is formed with an extension portion 12d further extended from the attachment portion 12a, and is locked to the distal end portion of the extension portion 12d with the base end portion of the leg portion 11a of the flange portion 11. A portion 12e is formed. Here, an inclined surface 12f is formed at the distal end portion of the locking portion 12e, and the inclined surface 12f is in contact with and locked to the lower side of the base end portion of the leg portion 11a as shown in FIG.

  Next, the manufacturing method of this striker 10 is demonstrated with reference to FIG.

One bar member 13 made of metal having a predetermined length is bent into a substantially U shape (substantially a gate shape) to form the collar portion 11. The substantially U-shaped on both sides of the rod-like portion 13a other inflated than a portion bulged portion 13b at a predetermined position of a pair formed, substantially in opposite directions as the rod-shaped portion 13a in the middle shown in two-dot chain line P Bend it at a right angle. Thereafter, the bent end portion 13c is further folded on a plane in the direction of the arrow Q, and the inclined surface 13d of the end portion 13c is brought into contact with the base end portion (bent portion) of the leg portion 11a to loop. To form.

  Next, the end portion 13c is clamped (compressed) from above and below, the entire upper surface and lower surface including the bulging portion 13b are finished on a flat surface, and the bulging portion 13b is compressed to form a flat mounting portion 12a. To do. Thereafter, the bolt hole 12b is processed in the mounting portion 12a to complete the manufacture of the striker 10.

  It should be noted that the inclined surface 12f of the base portion 12 and the leg portion 11a can be joined so as not to be separated by electric welding or other welding means as required.

  Further, the flat mounting portion 12a may be further finished by cutting or grinding as necessary.

  Such a striker 10 can improve the strength of the base portion 12 by bringing the inclined surface 12f of the base portion 12 into contact with the leg portion 11a so as to be continuous in a loop shape.

  In addition, since a relatively large opening (thickening hole) 12g is formed in the central portion of the base portion 12, the weight is light despite the fact that the outer shell is relatively large and can be mounted stably. is there. Further, since the base portion 12 having a large outer shape is formed by applying plastic processing to a single wire during manufacture, there is an effect that the waste material is less discharged during processing and the yield of the material is good.

Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.
Embodiment 3 of the Invention

  13 to 23 show the third embodiment of the present invention.

  The striker 10 according to the third embodiment includes a flange portion 11 formed integrally from a continuous metal rod member and bent into a substantially gate shape, and both end portions of the gate-shaped flange portion 11 (a gate-shaped base). The base portion 12 is bent at a substantially right angle from the end portion and extended on both sides across a plane including the gate shape.

  The flange portion 11 includes a pair of leg portions 11a and a locking rod 11b that extends over the leg portions 11a and extends in parallel with a mounting surface (not shown) on the vehicle body side.

  Further, the base portion 12 is formed in a flat shape as a whole, and a pair of attachment portions 12a attached to other members (an attachment surface on the vehicle body side) not shown is formed. These attachment portions 12a are formed into a circular shape by crushing after forming a spherical bulge portion 13b, and a bolt hole 12b is formed in the center thereof.

  Further, the base portion 12 has an extension portion 12d further extended from the attachment portion 12a, and a locking portion 12e to be locked to the base end portion of the leg portion 11a is formed at the distal end portion of the extension portion 12d. ing.

  The engaging portion 12e is formed with a fitting recess 12h into which the base end portion of the leg portion 11a is fitted.

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

  First, as shown in FIG. 14, a metal bar member 13 is cut into a predetermined length, and as shown in FIG. 15, the bar member 13 is bent into a substantially U-shape (substantially portal shape). The collar part 11 is formed. Forged build-up bulging from other portions is formed at predetermined positions of the rod-shaped portions 13a on both sides of the substantially U-shape to form a pair of bulging portions 13b (see FIG. 16).

  Further, as shown in FIG. 17, the tip portion 13e of the rod-like portion 13a is forged to form a built-up portion, and as shown in FIG. 18, the tip portion 13e is formed in a fork shape. Then, as shown in FIG. 19, the pair of rod-shaped portions 13a is subjected to the first transverse bending at substantially right angles to each other in the opposite direction, and as shown in FIG. As shown in FIG. 21, the pair of rod-shaped portions 13a is subjected to the third horizontal bending, and the fork-shaped fitting concave portion 13f of the tip end portion 13e is inserted into the leg portion 11a of the flange portion 11 as shown in FIG. The base end of the is fitted.

  Furthermore, as shown in FIG. 22, forging pressure is applied to form the base portion 12 by flattening the whole, and then a lower hole is opened as shown in FIG. 23, and a bolt hole 12b as shown in FIG. To complete the molding.

  Thus, by forming the striker 10 from the single bar member 13, the number of parts can be reduced, and by fitting the leg portion 11a to the fitting recess 12h, the entire base portion 12 is strengthened. Can be.

  Further, by forming the entire base portion 12 in a flat shape, it is easy to make surface contact with the vehicle body mounting surface.

Since other configurations and operations are the same as those of the second embodiment, description thereof is omitted.
[Embodiment 4 of the Invention]

  FIG. 24 shows a fourth embodiment of the present invention.

  In the third embodiment, as shown in FIG. 18, the tip end portion 13e is formed in a fork shape. However, in the fourth embodiment, the recess portion 13g is formed in the tip end portion 13e, and then the diagram of the third embodiment. The base end portion of the leg portion 11a is fitted into the recess 13g by bending a plurality of times in the same manner as in FIGS. Thereafter, as in FIG. 22 of the third embodiment, forging pressure is performed to form the entire base portion 12 flat.

  Even in this case, the strength of the base portion 12 can be ensured.

  Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

It is an external view of the striker which is a latching metal fitting which shows Embodiment 1 of this invention. FIG. 2 is a front view of FIG. 1 according to the first embodiment. FIG. 2 is a plan view of FIG. 1 according to the first embodiment. FIG. 2 is a side view of FIG. 1 according to the first embodiment. FIG. 2 is a bottom view of FIG. 1 according to the first embodiment. It is sectional drawing which fractures | ruptures and shows a part of locking plate concerning the first embodiment. It is an external view of the striker which shows Embodiment 2 of this invention. It is a top view of the striker which concerns on the same Embodiment 2. FIG. It is AA sectional drawing in FIG. 8 which concerns on the same Embodiment 2. FIG. FIG. 9 is a B view in FIG. 8 according to the second embodiment. FIG. 9 is a rear view of FIG. 8 according to the second embodiment. FIG. 10 is an external view showing a part of the forming process of the striker according to the second embodiment. It is a figure which shows the striker which is the latching metal fitting of Embodiment 3 of this invention, (a) is a top view, (b) is a bottom view, (c) is a right view of (b). It is a figure which shows the manufacturing process of the striker which concerns on the same Embodiment 3, and is a figure which shows a rod member. It is a figure which shows the manufacturing process of the striker which concerns on the same Embodiment 3, and is a figure which shows the state which bent the rod member. It is a figure which shows the manufacturing process of the striker which concerns on the same Embodiment 3, and is a figure which shows the state which formed the swelling part in the rod member. It is a figure which shows the manufacturing process of the striker which concerns on the same Embodiment 3, and is a figure which shows the state which formed the build-up part in the front-end | tip part of a bar member. It is a figure which shows the manufacturing process of the striker which concerns on the same Embodiment 3, and is a figure which shows the state which formed the front-end | tip part of the bar member in the fork shape. It is a figure which shows the manufacturing process of the striker which shows the same Embodiment 3, and is a figure which shows a 1st time bending state. It is a figure which shows the manufacturing process of the striker which shows the same Embodiment 3, and is a figure which shows a 2nd time bending state. It is a figure which shows the manufacturing process of the striker which shows the same Embodiment 3, and is a figure which shows a 3rd time bending state. It is a figure which shows the manufacturing process of the striker which shows the same Embodiment 3, and is a figure which shows the state which formed the base part flatly. It is a figure which shows the manufacturing process of the striker which shows the same Embodiment 3, and is a figure which shows the state which carried out the hole process in the base part. It is a figure which shows the front-end | tip part of the striker which is a securing metal fitting which shows Embodiment 4 of this invention, (a) is a top view, (b) is CC sectional drawing of (a). 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 Locking bracket (Strike)
11 Buttocks
11a Leg
11b Locking rod
12 Base part
12a Mounting part
12b Bolt hole
12c protrusion
12d extension
12e Locking part
12f inclined surface
12g opening
12h Mating recess
12i Tip
13 Bar material
13a Rod
13b bulge
13c end
13d inclined surface
13e Tip
13f Mating recess
13g recess

Claims (8)

A gate part integrally molded from a continuous metal rod member and bent into a substantially gate shape, and the gate shape bent at a substantially right angle from a base end part of a pair of leg parts of the gate type collar part And a base portion extended on both sides across a plane including
At least a part of the base portion is formed in a flat shape, and an attachment portion to be attached to another member is formed. The attachment portion is provided with a hole for attachment, and is used for a striker of an automobile opening / closing body. A locking bracket,
The base portion has an extension portion further extended from the attachment portion, and a locking portion that is locked to a base end portion of the pair of leg portions is formed at a distal end portion of the extension portion. A locking bracket. The engagement fitting according to claim 1 , wherein the engagement portion is formed with a fitting recess into which a base end portion of the pair of leg portions is fitted . 3. The locking bracket according to claim 1 , wherein the mounting portion is formed flat by press working from a swelled shape than the other rod-shaped portion . The locking bracket according to any one of claims 1 to 3, wherein the base portion is formed by compression molding as a whole and is flat . The engagement fitting according to any one of claims 1 to 4 , wherein a plurality of protrusions are formed on the attachment portion on a contact surface side to the other member . A gate part integrally molded from a continuous metal rod member and bent into a substantially gate shape, and the gate shape bent at a substantially right angle from a base end part of a pair of leg parts of the gate type collar part And a base portion extending on both sides across a plane including the base portion, the base portion is formed at least partially flat, and an attachment portion to be attached to another member is formed, and the attachment portion Is a method of manufacturing a locking fitting in which a mounting hole is formed and used for a striker of an opening / closing body for an automobile.
A metal rod member having a predetermined length is bent into a substantially gate shape to form the flange portion, and bent at substantially right angles in opposite directions from the base ends of the leg portions of the flange portion. After forming the base portion, at least a part of the base portion is compressed to form the flat mounting portion, and the pair of mounting portions are formed on both sides of the plane including the gate shape. The manufacturing method of the latching metal fitting characterized by the above-mentioned . A pair of bulges that swell from other parts are formed at predetermined positions of the bar members on both sides of the substantially portal shape, and the base members are formed by bending the bar members in the opposite directions from each other at substantially right angles, Then, the bulging portion is compressed to form the flat mounting portion, and the mounting portions are formed on both sides of a plane including the portal shape. A method for manufacturing fasteners. A locking portion is formed in a portion of the base portion that is extended from the bulging portion, a fitting recess is formed in the locking portion, and the fitting is performed on the base end portion of the leg portion of the substantially portal-shaped flange portion. 8. The method for manufacturing a locking metal fitting according to claim 7, wherein a fitting recess is fitted .

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