JPH04134291U - Welding positioning structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a welding positioning structure that can maintain its aesthetic appearance without the need for putty filling or polishing in the finishing process of a housing. [Structure] The upper material has a flat decorative surface, an upper contact surface, a concave upper base surface provided on the upper contact surface, a convex upper tip surface provided around this upper base surface, and this upper base surface and upper tip. It has an upper inner positioning surface provided between the surfaces, and an upper fillet surface. The lower material has a lower contact surface, a back surface, a convex lower end surface provided on this lower contact surface, a concave lower bottom surface provided around this upper end surface, and a lower bottom surface and a lower end surface. It has a lower inner positioning surface and a lower fillet surface provided in between. Then, position the upper material and the lower material so that the upper base surface and the lower tip surface and the upper tip surface and the lower bottom surface engage,
It is characterized by spot welding from the back side.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a welding positioning structure suitable for spot welding used in case assembly, etc. In particular, the present invention relates to improvements in simplifying the finishing process.

0002

[Conventional technology]

The present applicant has disclosed, for example, Japanese Utility Model Publication No. 54-22910, We are proposing a housing that FIG. 6 is an explanatory diagram of a conventional welding positioning structure. In the diagram The upper material 10 is provided with a hole 11, and the lower material 20 is provided with a punch 21. Ru. Engage the hole 11 and the punching 21, position the upper material 10 and the lower material 20, and then I was doing pot welding.

0003

[Problem that the idea aims to solve]

However, the surface of the upper material 10 is a decorative surface, and the holes 11 and the embossing 21 remain as they are. When it appears on makeup, it spoils the beauty. Therefore, in the finishing process, putty is applied to fill the recesses. It is necessary to perform filling work and polishing work to remove protrusions, increasing the time required for manufacturing. There was an issue of how to do this. This invention solves these problems and uses putty filling in the finishing process of the housing. To provide a welded positioning structure that maintains its appearance without the need for polishing or polishing. aimed to.

0004

[Means to solve the problem]

The present invention that achieves the above object has the following configuration. The top material is A flat decorative surface 12, an upper abutting surface 14 located on the opposite side of this decorative surface, and an upper abutting surface A concave upper base surface 162 provided on the upper base surface, and a convex upper tip surface provided around this upper base surface. 166, an upper inner positioning surface 164 provided between the upper base surface and the upper tip surface; It has an upper fillet surface 168 provided between the surface and the upper contact surface surrounding the upper end surface. . The lower material has a lower contact surface 22 opposite to this upper contact surface, and a lower contact surface 22 located on the opposite side of this lower contact surface. a convex lower end surface 262 provided on this lower contact surface; A concave bottom surface 266 provided around the periphery, and a bottom surface provided between this bottom bottom surface and the bottom tip surface. An inner positioning surface 264 is provided between this lower base surface and a lower abutment surface surrounding this lower base surface. It has a bottom meat surface 268. Then, the upper base surface and the lower tip surface, and the upper tip surface and the lower bottom surface are engaged. The feature is that the upper and lower materials are positioned in a mating state and spot welded from the back side. It is said that Preferably, the engaged state is such that the upper fillet surface and the lower fillet surface are in contact with each other, and the upper and lower fillet surfaces are in contact with each other. The bottom and top surfaces and bottom and bottom surfaces are held in a non-contact state and correspond to the bottom surface of the back surface. It is recommended to perform projection welding at the location where the

[0005]

[Effect]

Each component of the present invention operates as follows. Upper bottom surface, upper inner positioning surface, upper tip surface and The upper fillet surface is the positioning part of the upper material, and the lower bottom surface and lower inner part are the positioning parts of the lower material. Positioning is performed by engaging with the positioning surface, lower tip surface, and lower fillet surface. spot welding Since it is done from the back side, there are no dents or protrusions on the decorative surface, simplifying the finishing process. be done.

[0006]

【Example】

The present invention will be explained below using the drawings. FIG. 1 is a sectional view of a main part showing an embodiment of the present invention. In the figure, the top material 10 is flat. It has a flat decorative surface 12 and an upper contact surface 14 located on the opposite side of the decorative surface. As a positioning part of the upper contact surface 14, a concave upper bottom surface 162 and a periphery of this upper bottom surface 162 are provided. A convex top surface 166 provided in the surrounding area, and a convex top surface 166 provided between the top bottom surface 162 and the top surface 166. the upper inner positioning surface 164, the upper tip surface 166, and the upper abutment surface 14 surrounding the upper tip surface 166. It has an upper fillet surface 168 provided therebetween. The lower material 20 faces the upper contact surface 14 It has a lower part surface 22 which is located on the lower part, and a back surface 24 which is located on the opposite side of the lower part part surface 22. . As a positioning part of the lower joint surface 22, a convex lower tip surface 262 and the periphery of the lower tip surface 262 are used. A concave bottom surface 266 provided between the bottom surface 266 and the bottom surface 262. A lower inner positioning surface 264, this lower bottom surface 266, and a lower stop that surrounds this lower bottom surface 266. It has a bottom fillet surface 268 provided between the contact surfaces 22.

[0007] The assembly work for the device configured in this way will be described next. First, the upper base surface 162 and The upper material 10 and the lower material 2 are in a state where the lower end surface 262, the upper end surface 166, and the lower bottom surface 266 are engaged with each other. Position 0. Next, spot welding is performed from the back surface 24. In this case, e.g. When welding metal using a localized arc, such as projection welding, There is no fear that unevenness will occur on the decorative surface 12, and the finishing work is facilitated.

[0008] FIG. 2 is an explanatory diagram of a state in which the upper material 10 is processed. The upper material 10 has a decorative surface on the lower mold 30. 12 faces, and the upper abutment surface 14 faces the upper mold 40. The lower die 30 is flat, and the upper die 30 is flat. Responsible for receiving when the upper contact surface 14 is plastically deformed into a predetermined shape by the mold 40. Ru. The upper mold 40 includes an upper tip surface 42 corresponding to the upper bottom surface 162 of the upper contact surface 14, and an upper inner The slope 44 corresponding to the positioning surface 164, the upper bottom surface 46 corresponding to the upper tip surface 166, and the upper A fillet slope 48 corresponding to the fillet surface 168 is provided. And press processing A positioning portion is molded at a predetermined position.

[0009] FIG. 3 is an explanatory diagram of a state in which the base material 20 is processed. The lower material 20 is attached to the lower die 50. The surface 22 faces, and the back surface 24 faces the upper die 60. The lower mold 50 has a lower joint surface 2 2, the lower bottom surface 52 corresponds to the lower end surface 262, and the sloped surface corresponds to the lower inner positioning surface 264. 54, a corner corresponding to the lower tip surface 56 corresponding to the lower bottom surface 266 and the lower fillet surface 268 A slope 58 is provided. The upper die 60 is used to smoothly plastically deform the lower material 20. Therefore, an uneven shape that pairs with the lower die 60 is provided. A bottom surface 66 and a corner slope 68 are provided. Then, press it into place. A positioning part is molded at the position.

0010 FIG. 4 is a perspective view of the upper material 10 and the lower material 20. In Figure 1, it resembles a single tooth shape on a gear. However, here, concentric circles are formed on the bottom material 20 with the bottom end surface 262 as the center. A lower inner positioning surface 264, a lower bottom surface 266, and a lower fillet surface 268 are formed in the shape of Ru. Correspondingly, the upper material 10 has an upper inner positioning surface centered on the upper bottom surface 162. 164, the upper tip surface 166 and the upper fillet surface 168 are formed concentrically.

[0011] Figure 5 is an explanatory diagram of welding, where (A) shows the case where the positioning part and the welding part are provided separately; ) indicates a common case. In projection welding, the effect of welding is cosmetic. Welding conditions such as current and contact condition are set within a predetermined range so as not to appear on surface 12. need to be managed. Therefore, the positioning part and the welding part are often provided separately, and The same thing happened next time. Welding is performed from the back surface 24. In this invention, the upper inner positioning surface 164 and the lower inner positioning surface 264 so that welding occurs there. By doing this, welding conditions can be managed. Upper base surface 162, lower tip surface 262, and upper tip surface 1 66 and the lower bottom surface 266, the arc flow and heat flow are reduced. control and maintain good welding conditions. Welding is performed on the bottom surface 262 of the back surface 24. Start from the corresponding position.

0012

[Effect of the idea]

As explained above, according to the present invention, the upper material 10 and the lower material 20 have unevenness for positioning. Since spot welding is performed from the back surface 24 with the I rarely cheat. This eliminates the need for putty filling and polishing during the finishing process. This means less manufacturing time.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a state in which the upper material 10 is processed.

FIG. 3 is an explanatory diagram of a state in which the base material 20 is processed.

FIG. 4 is a perspective view of the upper material 10 and the lower material 20.

FIG. 5 is an explanatory diagram of welding.

FIG. 6 is an explanatory diagram of a conventional welding positioning structure.

[Explanation of symbols]

10...Upper material 12...Makeup side 14...Top contact surface 162...Top base 164...Upper inner positioning surface 166...Top surface 168...Top fillet side 20...Bottom material 22…Gometobutsumen 24...back side 262...Lower tip surface 264…Lower inner positioning surface 266...Lower base 268... Bottom meat side

Claims (2)

[Scope of utility model registration request] Claim 1: A flat decorative surface (12), an upper abutting surface (14) located on the opposite side of the decorative surface, a concave upper base surface (162) provided on the upper abutting surface, and a periphery of the upper base surface. A convex upper tip surface (166) provided on the top surface, an upper inner positioning surface (164) provided between the upper base surface and the upper tip surface, and an upper abutment surface surrounding the upper tip surface and the upper tip surface. an upper material (10) having an upper fillet surface (168) provided on the upper surface, a lower contact surface (22) opposite to this upper contact surface, and a back surface (24) located on the opposite side of this lower contact surface. , a convex lower tip surface (262) provided on this lower contact surface, a concave lower bottom surface (266) provided around this lower tip surface, and a concave lower bottom surface (266) provided between this lower bottom surface and the lower tip surface. a lower inner positioning surface (264), a lower fillet surface (264) provided between this lower bottom surface and a lower contact surface surrounding this lower bottom surface;
8), the upper material and the lower material are positioned in a state where the upper bottom surface and the lower end surface and the upper end surface and the lower bottom surface are engaged with each other, and spot welding is performed from the back surface. Welded positioning structure. [Claim 2] In the engaged state, the upper fillet surface and the lower fillet surface are in contact with each other, the upper base surface and the lower tip surface, and the upper tip surface and the lower bottom surface are held in a state of not contacting each other, and the lower tip surface of the back surface is held in a state of not contacting. Claim 1 characterized in that projection welding is performed at corresponding positions.
The welding positioning structure described.