WO2004112983A1

WO2004112983A1 - Engagement method of engagement members and engagement body obtained by the method

Info

Publication number: WO2004112983A1
Application number: PCT/JP2004/008928
Authority: WO
Inventors: Yoshikazu Kitamura; Wataru Miyazaki; Hitoshi Suzuki; Tsuyoshi Nakamura; Takashi Ogino
Original assignee: Nhk Spring Co., Ltd.
Priority date: 2003-06-20
Filing date: 2004-06-18
Publication date: 2004-12-29
Also published as: JP2005007463A

Abstract

A method of engaging a first plate-like member (20) and a second plate-like member (30) while forming the first plate-like member (20) in a male pattern shape and the second plate-like member (30) in a shape of a female pattern engaged with the male pattern. The first plate-like member (20) and the second plate-like member (30) are laid over each other between a punch (11) having a predetermined shape to form the male pattern shape and a die (12) having a hole portion (121), corresponding to the predetermined shape, to form the female pattern shape. When the first plate-like member (20) and the second plate-like member (30) are pressed by the punch (11) and the die (12), the first plate-like member and the second plate-like member are engaged while the male pattern shape is formed on the first plate-like member and the female pattern shape is formed in the second plate-like member.

Description

Description: Engaging method of engaging member and engaging body obtained by the method

The present invention relates to a method for engaging an engaging member and an engaging body obtained by the method. More specifically, a male shape is formed on one engaging member, and the male shape is formed on another engaging member. The present invention relates to a method of shaping a female mold for engagement and engaging the engaging members with each other, and an engaging body obtained by this method. Background art

Conventionally, the following is known as a method for engaging a first plate-shaped plate-shaped member as one engagement member with a second plate-shaped plate-shaped member as another engagement member. Have been. Such an engaging method generally includes a molding step, a positioning step, and an engaging step (for example, see Japanese Patent Application Laid-Open No. H10-47545). In the forming step, a male-type engaging portion is formed at a predetermined engaging portion of the first plate-like member, and a female-type engaging portion is formed at a predetermined engaging portion of the second plate-like member. This is the step of molding. The alignment step is a step of aligning the first plate-shaped member molded into a male shape and the second plate-shaped member molded into a female shape so that the engagement portions of each other match. . The engaging step is a step of engaging the first plate-shaped member and the second plate-shaped member via the respective engaging portions after the alignment.

However, in the conventional engagement method as described above, the molding process and the engagement process are performed individually and independently, and thus have the following problems. That is, in the forming step, after forming the male-shaped engaging portion at the engaging portion of the first plate-like member and forming the female-shaped engaging portion at the engaging portion of the second plate-like member, However, since the first plate-shaped member and the second plate-shaped member are engaged with each other via the engagement portions independently of each other, the engagement of the first plate-shaped member formed into a male shape is performed. Part and the engaging part of the second plate-shaped member formed into a female shape. Between them, it was necessary to ensure a sufficient gap due to dimensional differences (hereinafter also referred to as clearance). Therefore, even if the first plate-shaped member and the second plate-shaped member are engaged in the engagement step, the first plate-shaped member and the second plate-shaped member are easily separated from each other depending on the size of the clearance. In particular, the first plate-shaped member and the second plate-shaped member easily come off in the thickness direction, and it is difficult to satisfactorily engage the two. Note that such a problem is not limited to the plate-shaped member, and there is a similar problem for the entirety of the engaging members to be engaged.

The present invention has been made in view of the above circumstances, and provides an engagement method capable of satisfactorily engaging one engagement member with another engagement member and an engagement body obtained by the method. The purpose is. Disclosure of the invention

A method for engaging an engaging member according to claim 1 of the present invention, comprising: forming a male shape on one engaging member; and a female member for engaging the male type on another engaging member. A method of shaping the shape of a mold and engaging the engaging members with each other, the first pressing having a predetermined shape for shaping any one of the male and female molds. The one engaging member and the other engaging member are laminated between a member and a second pressing member having a hole corresponding to the predetermined shape in order to form one of the other shapes. By pressing the one engaging member and the other engaging member by the first pressing member and the second pressing member, a male shape is formed on the one engaging member, The one engaging member and the other engaging member are engaged while forming a female shape on the other engaging member. That.

According to the present invention, by pressing the one engaging member and the other engaging member by the first pressing member and the second pressing member, the male shape is formed in the one engaging member. Since the one engaging member and the other engaging member were engaged while forming and forming the female shape on the other engaging member, the clearance between them can be minimized. Therefore, the engagement between one engagement member and another engagement member has a satisfactory engagement strength. Therefore, there is no possibility that the one engaging member and the other engaging member come off from each other. Therefore, one engagement member and another engagement member can be satisfactorily engaged. · The method for engaging an engaging member according to claim 2 according to the present invention is the method according to claim 1, wherein one end of the band is the one engaging member, and the other of the band is used. The end portion is laminated as the other engagement member.

According to the present invention, by pressing the one engaging member and the other engaging member by the first pressing member and the second pressing member, a male shape is formed in the one engaging member. Since the one engaging member and the other engaging member are engaged while forming the female shape on the other engaging member, the clearance between the two can be minimized. Therefore, the engagement between the one engagement member and the other engagement member has a satisfactory engagement strength, and the one engagement member and the other engagement member are mutually displaced. There is no danger of coming off. Therefore, it is possible to satisfactorily engage the negative engaging member with another engaging member.

According to a third aspect of the present invention, there is provided an engaging body obtained by the engaging method according to the first aspect.

According to the present invention, since it is obtained by the above-described engagement method, it has a satisfactory engagement strength. Therefore, there is no possibility that the engagement is easily released. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A to FIG. 1C are cross-sectional views schematically showing main steps of an engagement method according to an embodiment of the present invention, and FIG. FIG. 3 is an exploded perspective view for explaining the state in FIG. 3, and FIG. 3 is a perspective view showing an engagement body obtained by the engagement method according to the embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

In order to explain the present invention in more detail, this will be described with reference to the accompanying drawings. Hereinafter, for convenience of explanation, the engagement member to be engaged will be described as a flat plate-shaped member. 1A to 1C are cross-sectional views schematically showing main steps of an engagement method according to an embodiment of the present invention. In FIGS. 1A to 1C, the engagement method includes an arrangement step and a molding and engagement step.

In the arrangement step, as shown in FIG. 1A, an engagement is performed between the punch (first pressing member) 11 and the die (second pressing member) 12 at a predetermined standby position. The first plate-shaped member (one engagement member) 20 and the second plate-shaped member (other engagement member) 30 are laminated in such a manner that the engagement portions 21, 31 of V ヽ overlap each other. This is the step of arranging. In this arrangement step, the first plate-shaped members 20 are stacked so as to be located above the second plate-shaped members 30. Further, an end 33 of the second plate-shaped member 30 including the engagement portion 31 is arranged so as to face an opening of a hole 122 formed in the die 12, which will be described later. Here, the material of the first plate-shaped member 20 and the second plate-shaped member 30 is not particularly limited, and for example, aluminum, stainless steel, or the like is used.

The punch 11 is for forming a male shape into the first plate-shaped member 20. More specifically, the punch 11 moves downward from a predetermined standby position and moves downward to form a pair with the die 12 so that the engagement portion 21 of the first plate member 20 has a male shape. This is for molding the first engaging portion 21a (see FIG. 3). As shown in FIG. 2, the punch 11 has a predetermined shape so as to form a first engagement portion 21 a having a male shape at the engagement portion 21 of the first plate-shaped member 20. And a contact portion 110 contacting the engagement portion 21 at a lower portion thereof. The contact portion 110 is provided with a cutting portion 111 for preventing cutting of the first plate-like member 20 in a forming / engaging step described later. FIG. 2 is an exploded perspective view for explaining a state in an arrangement step.

Such a punch 11 presses the first plate-shaped member 20 and the second plate-shaped member 30 with the stripper plate 13 interposed therebetween. After the stripper plate 13 engages the first plate-shaped member 20 and the second plate-shaped member 30 in a forming / engaging step described later to form an engagement body 40 (see FIG. 3), When the punch 11 retreats upward to return to the predetermined standby position, the engaging body 40 is attached to the punch 11. This is for preventing upward retreat. That is, the strip plate 13 separates the punch 11 from the engaging body 40. The stripper plate 13 is formed with a through hole 1331 corresponding to the shape of the punch 11 through which the punch 11 passes.

The die 12 is for forming a female mold on the second plate-shaped member 30. More specifically, the die 12 is configured such that the punch 11 advances and moves downward to form a pair with the punch 11, and the die 11 is engaged with the engagement portion 31 of the second plate-shaped member 30. This is for forming the second engaging portion 31a (see Fig. 3) having the shape of the mold. The die 12 has an abutment portion 120 that contacts an engagement portion 31 of the second plate-shaped member 30 at an upper portion thereof. As described above, the die 12 is formed with the hole 121 that opens to the contact part 120. The hole 1 21 contributes to forming the second engagement portion 31 a in the engagement portion 31 of the second plate-shaped member 30, and has a shape corresponding to the shape of the punch 11. Yes. In other words, the opening of the hole 122 has a male shape. The hole 121 extends along the vertical direction of the die 12 while maintaining the shape. Further, rails 122a and 122b are provided on the upper surface of the contact portion 120 of the die 1.2. The rails 122a and 122b are formed in a direction in which the first plate-shaped member 20 and the second plate-shaped member 30 are respectively orthogonal to the longitudinal direction, that is, in the lateral direction, in a forming / engaging step described later. This is to prevent spreading.

The molding / engaging step includes the steps of: attaching the first plate-shaped member 20 and the second plate-shaped member 30 to the first engagement portion 21 a having a male shape and the second engagement portion 31 a having a female shape. This is a step of forming a and engaging the two. In other words, as shown in FIG. 1B and FIG. 1C, the forming / engaging step involves moving the punch 11 at a predetermined standby position downward and forward to move the punch 11 and the die 1. 2 to form the male-shaped first engagement portion 21 a at the engagement portion 21 of the first plate-shaped member 20, while engaging the second plate-shaped member 30. A female-shaped second engaging portion 31a is formed in the part 31 and the first plate-shaped member 20 and the second plate-shaped member 30 are joined to the first engaging portion 21a and the second This is a step of engaging via the engaging portion 31a. The molding / engaging process will be described in detail below. By moving the punch 11 forward and backward from the predetermined standby position, as shown in FIG. IB, the contact portion 110 of the punch 11 contacts the first plate-shaped member 20. The die 12 is brought into contact with the die 12, and the contact portion 120 is brought into contact with the second plate member 30 (hereinafter, also referred to as a pressing start state). In such a state, the distance between the lower surface of the contact portion 110 of the punch 11 and the upper surface of the contact portion 120 of the die 12 is determined by the thickness of the first plate member 20. This is equal to the sum of the thickness of the second plate-shaped member 30 and the thickness.

From such a pressing start state, the punch 11 only has an amount corresponding to the thickness of the first plate member 20 or an amount slightly larger than the thickness of the first plate member 20. The first plate member 20 and the second plate member 30 are pressed by the punch 11 and the die 12. The first plate-like member 20 and the second plate-like member 30 are moved as follows by pushing the punch 11 forward and backward by a specific amount.

In the first plate-shaped member 20, a male-shaped first engagement portion 21 a was formed along the shape of the punch 11 at the engagement portion 21, and at the same time, the punch 11 was formed. Therefore, it will move downward. In this case, the waste material 22 cut from the first plate-shaped member 20 when the first engagement portion 2la is formed is left on the second plate-shaped member 30. This waste material 22 is then removed.

On the other hand, in the second plate-shaped member 30, the portion of the end 33 facing the opening of the hole 121 of the die 12 is shaped by the advance movement of the first plate-shaped member 20. Cut along the shape of the mold). As a result, the second plate-shaped member 30 has a female-shaped second engaging portion 31a formed at the engaging portion 31. At this time, the waste material 32 cut from the second plate-shaped member 30 is removed downward through the hole 121.

Then, the first plate-shaped member 20 and the second plate-shaped member 30 are engaged via the first engagement portion 21a and the second engagement portion 31a. As a result, an engaging body 40 as shown in FIG. 3 is obtained. As described above, in the forming / engaging step, the punch 11 is advanced by an amount corresponding to the thickness of the first plate-shaped member 20 or a slightly larger amount. The first plate-shaped member 20 and the second plate-shaped member 30 are pressed by the punch 11 and the die 12 so that the first engagement with the first plate-shaped member 20 is performed. While forming the portion 21a, the second engaging portion 31a of the second plate-shaped member 30 is formed, and the first engaging portion 21a and the second engaging portion 31a are formed. At substantially the same time as the completion, the engagement between the first plate-shaped member 20 and the second plate-shaped member 30 is completed. That is, the punch 11 is advanced and moved by a specific amount without passing through the hole 12 1 of the die 12 to form the first engagement portion 21 a and to form the second engagement portion 31 1 The molding of a, the engagement of the first plate-shaped member 20 and the second plate-shaped member 30 and the force are performed almost simultaneously.

Thereafter, when the punch 11 is moved upward to return to the predetermined standby position, the engaging body 40 is separated from the punch 11 by the action of the stripper plate 13 and the contact portion of the die 12 It will be placed on 120.

According to the engagement method according to the embodiment of the present invention as described above, the first engagement portion 21a is formed by pressing with the punch 11 and the die 12, and the second engagement is performed. Since the first plate-like member 20 and the second plate-like member 30 were engaged while forming the part 31a, the first engagement part 21a and the second engagement part 31a were formed. Clearance is sufficient if it is the minimum necessary. For this reason, the engagement between the first plate-shaped member 20 and the second plate-shaped member 30 has a sufficient engagement strength, and the first plate-shaped member 20 and the second plate-shaped member 20 are formed by such clearance. There is no risk that the two plate-shaped members 30 will come off from each other. Therefore, the first plate member 20 and the second plate member 30 can be satisfactorily engaged.

Further, according to the above-mentioned engagement method, the formation of the first engagement portion 21 a and the second engagement portion 31 a and the relationship between the first plate member 20 and the second plate member 30. Since the joining is performed at substantially the same time, the number of steps can be reliably reduced as compared with the conventional engagement method.

On the other hand, since the engagement body 40 is obtained by the above-described engagement method, it has a satisfactory engagement strength. Therefore, there is no possibility that the engagement is easily released.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various changes can be made. In the engagement method according to the present invention, one end of one band is used as one engagement member, and the other end of the band is used as another engagement member. Then, both may be engaged. Thereby, an endless or ring-shaped engaging body can be obtained. The engaging body thus obtained can be applied to various uses, for example, a ring for fastening a constant velocity joint boot. Industrial applicability

As described above, the engagement method and the engagement body of the engagement member according to the present invention are useful for engaging the two engagement members while maintaining a sufficiently high engagement strength.

Claims

1. A method of forming a male shape on one engaging member and a female shape for engaging the male type on the other engaging member, and engaging each other with the engaging members. A first pressing member having a predetermined shape for forming one of the male and female dies, and a first pressing member corresponding to the predetermined shape for forming the other of the forces. Do

The first engaging member and the other engaging member are provided between the second engaging member and the second pressing member having the hole.

And the first engaging member and the other pressing member are pressed by the first pressing member and the second pressing member.

By pressing the engaging member, the one engaging member is formed into a male shape, and the other engaging member is formed into a female shape. The other surrounding

A method for engaging an engagement member, wherein the engagement member is engaged with the engagement member.

2. The engaging member according to claim 1, wherein one end of the band is used as the one engaging member, and the other end of the band is used as the other engaging member. Engagement method.

3. An engaging body obtained by the engaging method according to claim 1.