JP2001076785A - Electrically jointed structural body and its forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrically jointed structural body and its forming method allowing its electrical connection form to be adjusted afterward according to the circuit structure of an object product by forming it by targeting a few kinds of products and ultimately a single kind of product by defining a basic shape. SOLUTION: A forming process of this electrically jointed structural body 1 is divided into an intermediate forming process for forming a commonly usable matrix structural body 5 and a final forming process for selectively canceling an electrically connected state of each jointed position 7, so that the improvement of productivity, the enhancement of design efficiency, reduction of a product cost, effective utilization of inventories, and rapid response to design change are realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection structure applicable to insert parts mounted on electric parts such as lamp sockets used for room lamps of automobiles and relay boxes used for various control panels. More particularly, the present invention relates to an electrical joint structure and a molding method thereof for improving molding efficiency and improving compatibility with various circuits.

[0002]

2. Description of the Related Art Insert parts are used as one of circuit means for electric parts such as lamp sockets of various lamps such as room lamps of automobiles and relay boxes used for various control panels. ing.
When molding this insert part, first determine the planar shape to be punched out by pressing, etc., according to the shape, dimensions, circuit configuration, etc. of the electric part in which the insert part is used, and then perform bending or finishing. It is molded as an insert part dedicated to the electric part.

[0003]

However, when an insert part is molded by such a molding technique, the object is determined, for example, as a room lamp of an automobile, and even if the shape and dimensions are somewhat uniform, the circuit is not required. If the configuration is different, a plurality of types of insert parts corresponding to the different configurations must be prepared individually. Therefore, complication of designing insert parts and managing parts cannot be avoided.

The present invention has been made in view of the above-mentioned conventional problems, and has diversified a circuit configuration caused by a difference in type or function, or changed a circuit configuration caused by a subsequent design change or the like. In order to cope with such situations, the movement to increase the number of varieties, which is directly linked to a drop in productivity, was revised. It is an object of the present invention to provide an electrical joint structure capable of adjusting an electrical connection state according to a circuit configuration of a product, and a method of molding the same.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a connection state of a matrix structure to which all terminals are electrically connected is selectively released by post-processing. It is characterized by being constituted by.

According to a second aspect of the present invention, in the electrical junction structure according to the first aspect, the matrix structure includes a plurality of matrix elements arranged in a matrix.
It is characterized in that it is constituted by electrically connecting all the joining parts.

According to a third aspect of the present invention, in the electrical junction structure according to the second aspect, when arranging the matrix elements in a matrix, the joint irregularities formed with respect to the matrix elements are formed by joining portions. It is characterized by being arranged three-dimensionally by appropriately combining so that

According to a fourth aspect of the present invention, in the electrical junction structure according to any one of the first to third aspects, when the connection state of the matrix structure is released, all the paths leading to the selected junction site are released. In addition to cutting off the electric connection state, the electric connection state of only a part of the paths is cut off.

According to a fifth aspect of the present invention, there is provided an intermediate forming step of forming a matrix structure in which all terminals are electrically connected, and an electrical connection state of a joint portion of the formed matrix structure is formed by post-processing. And a final forming step of forming the electrical joint structure by selectively releasing.

According to a sixth aspect of the present invention, in the method for forming an electrical joint structure according to the fifth aspect, the intermediate molding step includes forming a concave and convex portion for forming a concave and convex portion on the matrix element. Matrix element arranging step of arranging the elements in a matrix by appropriately combining matrix elements so that the formed concavo-convex portion becomes a joint part, and a matrix structure forming step of electrically connecting all the joint parts of the arranged matrix elements And characterized in that:

The invention according to claim 7 is the invention according to claim 5 or 6.
In the method for forming an electrical joint structure described in the above, the final molding step is to completely or partially remove the contact surface itself of the selected joint portion, or to cut off a path leading to the connection portion Thus, the electrical connection state of the joining portion of the matrix structure is selectively released afterward.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an electric joint structure according to the present invention. In the description, the method of forming the electrical joint structure of the present invention will be mainly described, and in the description, the configuration of the matrix structure serving as an intermediate molded product and the structure of the electrical joint structure of the present invention serving as a final molded product Will be described together, and finally, another embodiment of the present invention having a different partial configuration will be referred to.

The method of forming the electrical joint structure 1 according to the present invention includes an intermediate molding step of molding a matrix structure 5 to which all the terminals 3 are electrically connected, and a joining portion of the formed matrix structure 5. And a final forming step of forming the electrical connection structure 1 by selectively releasing the electrical connection state of the electrical connection structure 7 by post-processing.

In the intermediate molding step, a matrix element 9 as shown in FIG. 2 is used as an example. An uneven portion forming step of forming the joint uneven portion 11 on the matrix element 9, and the formed joint uneven portion 11 is
A matrix element arranging step of arranging them in a matrix by appropriately combining the matrix elements 9, and a matrix structure forming step of electrically connecting all the joint portions 7 of the arranged matrix elements 9. It is constituted by.

More specifically, referring to FIG. 3, as the matrix element 9, a long plate-like member as shown in FIG. 2 is used as an example, and the material can exhibit a predetermined conductivity. Use a metal material or the like. In order to form such a matrix element 9 as shown in FIG.
An uneven portion forming process as shown in FIG. In the illustrated embodiment, a processing process by press molding using the molding die 13 is shown, but it is appropriately extruded, drawn, punched, and cut in accordance with a difference in the shape of the joint uneven portion 11 to be molded. Other processing means such as bending, injection molding and the like can also be adopted.

As shown in FIG. 3 (b), the matrix elements 9 on which the bonding unevenness portions 11 are formed are aligned at regular intervals so that the bonding unevenness portions 11 are located upward, as an example. The other matrix elements 9 are similarly arranged and arranged at regular intervals with the bonding uneven portion 11 facing downward in a direction orthogonal to this, and a matrix is formed as an example when viewed from above. . In addition, as the shape of the matrix, in addition to the lattice shape shown in the figure, various shapes such as concentric circles or concentric rectangular shapes, radial shapes, and irregular shapes that are not limited thereto can be adopted.

Next, as shown in FIG. 3 (c), the contact surfaces of the joint uneven portions 11 of the matrix elements 9 arranged vertically are electrically connected by spot welding. In the illustrated embodiment, the case where the contact surface of the joint uneven portion 11 is melt-bonded by spot welding is shown. However, besides, soldering or betting or screwing may be used, or if sufficient conductivity is secured. For example, simple means such as pressure contact, spring contact, and engagement may be used.

The structure formed through these steps is the matrix structure 5 shown in FIG. 2, and all the terminals 3 of the matrix structure 5 are electrically connected. It will be the starting material. The matrix structure 5 may be formed through a process as shown in FIG. 3 or may be integrally formed by punching metal by simple punching, injection molding, etching, laser processing, cutting with a milling machine or the like, although not shown. Those that have been used can also be used depending on the application and conditions.

Next, the final molding step will be described. As described above, the final molding step uses the molded matrix structure 5 as a starting material, and
In this step, the electrical connection state is selectively released by post-processing to obtain the electrical connection structure 1 having a desired circuit configuration suitable for use. Hereinafter, a specific description will be given based on FIG.

FIG. 4 (a) shows a truncated conical joint 1
This shows a state in which a punch 15 having a diameter slightly larger than these diameters is used to vertically join the joint portion 7 formed by joining the joint portions 7 with their axes aligned from above. . As shown in the figure, the upper and lower portions of the joint portion 7 including the contact surface are removed as shown in the drawing, so that the electrical connection between the matrix elements 9 arranged above and below is cut off.

FIG. 4B shows an example in which a punch 15 having a semicircular cross section is used to punch vertically from above so that a part of the contact surface of the joining portion 7 remains as an example. Is shown. In the joint portion 7 thus punched out, the electrical connection state from the left side to the upper side in FIG. 4B is maintained as it is, but between the lower side and the upper side and the left side, and the right side and the upper side and the left side. , The electrical connection between the lower side and the right side is interrupted.

FIG. 4C shows an embodiment in which a part of a path (a part of the matrix element 9 where the joint uneven part 11 is not formed) to the joint part 7 is cut while leaving the joint part 7 as it is. Is shown. As shown in the figure, when the left and right paths of the joint portion 7 are cut, the electrical connection state from the upper side to the lower side is maintained as it is, but the left and right sides, the upper and the left and right sides, Down and left
The electrical connection between the right side is cut off.

The final molding step is to form a desired circuit afterwards by appropriately combining such punching or cutting modes. The final molded step is the one shown in FIG. The electrical joint structure 1 according to the present invention is provided. In the above-described punching and cutting, various processes such as cutting using a laser beam or a milling machine, acid (etching), and the like can be adopted, in addition to pressing or shearing using the punch 15 as illustrated. Such processing can be performed before and after insert molding, and can be similarly performed even with the matrix structure 5 embedded in resin.

Although the present invention is based on the above-described configuration, it is needless to say that the following partial modifications can be made in accordance with the uses and conditions to be used. FIG. 5 shows an embodiment in which the shape or combination of the joint uneven portions 11 is different. That is, FIG.
In (a), one matrix element 9 to be joined is simply left as a flat plate, and the other matrix element 9 is joined.
This is an embodiment in which only a truncated conical joint uneven portion 11 is formed.

FIG. 5 (b) shows a case in which the bowl-shaped or round-bottom cylindrical joining uneven portions 11 having different depths are formed on the respective matrix elements 9 for joining, and the shallow bottom joining uneven portions 1 are formed.
This is an embodiment in which the concave / convex portion of the deep concave / convex portion 11 is fitted into one concave portion. FIG. 5C shows an embodiment in which a cylindrical joint uneven portion 11 whose bottom is cut off is formed, and one joint uneven portion 11 is fitted inside the other joint uneven portion 11.

FIG. 5D shows a substantially rectangular flat plate-shaped joint uneven portion 11 which is provided with an "E" -shaped slit 17 in the flat matrix element 9 and bent downward. And the central engaging slit 19
This is an embodiment in which the engagement is made with the engagement slit 19 of the joint uneven portion 11 of the other matrix element 9 of the same shape using the above. And even when such a configuration is adopted, the joining portion 7 in the above-described final molding step is used.
It is possible to perform processing such as punching and cutting, and the same effect as that obtained when the above-described basic configuration is adopted is exhibited.

In addition, in the above-described basic embodiment, the mode in which the matrix elements 9 are vertically arranged in two stages has been described.
It is possible to add four stages, and when using the matrix structure 5 using the above-described punched metal or the like, it is of course possible to use only one stage. FIGS. 6A to 6D show an embodiment in which the matrix elements 9 are vertically stacked in three or four stages.

FIG. 6 (a) shows a matrix element 9 having a stepped double columnar joint uneven portion 11 having a large-diameter portion and a small-diameter portion, and fitted into the large-diameter portion or the small-diameter portion, respectively. This is an embodiment in which the matrix elements 9 having the bottomless cylindrical joint unevenness portions 11 as shown in FIG. 5C are combined in three stages. FIG. 6B shows an embodiment in which a matrix element 9 in which the concavo-convex portions 11 having a truncated cone shape are formed on both upper and lower surfaces and a matrix element 9 in a flat plate shape are combined in three stages. In (3), the formation positions of the concavo-convex joints 11 in the shape of a truncated cone are slightly shifted in the horizontal direction between the upper and lower matrix elements 9 and the matrix elements 9 in the form of a flat plate are sandwiched therebetween. It is an embodiment.

FIG. 6 (d) shows the structure shown in FIG. 6 (a).
The matrix element 9 formed with the stepped double columnar joint uneven portion 11 used in the above and the matrix element 9 formed with the columnar joint uneven portion 11 fitted inside the large diameter portion of the joint uneven portion 11 are respectively This is an embodiment in which two sets are vertically symmetrically arranged and combined in four stages. FIG. 6 (a),
In (d), the diameter of the punch 15 or the like for punching the joint portion 7 is changed, and in FIGS. 6B and 6C, the position and the number of the punches 15 are changed to change the matrix of each stage. It is possible to selectively adjust the electrical connection between the elements 9.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the design may be changed without departing from the gist of the present invention. Are also included in the present invention. For example, the present invention is not limited to insert components, and it is needless to say that the present invention can be applied to components for circuit configuration arranged in a state exposed in the device.

[0031]

As described above, according to the present invention, the following effects can be obtained. A series of forming processes of the electrical bonding structure 1 are separated into an intermediate forming step and a final forming step, and the processing object in the intermediate forming step is a single or extremely common matrix structure having a limited shape. By setting it to 5, mass production becomes possible, and significant contributions such as improvement of productivity, efficiency of design, reduction of product cost, effective use of inventory, etc. are brought. Further, by performing a circuit configuration different for each product by an extremely simple operation of selectively removing the joint portion 7, for example, once the positioning operation of the punch 15 corresponding to the joint portion 7 for releasing the electrical connection state is completed, the operation is performed once. It is possible to instantaneously form the electrical connection structure 1 having a desired circuit configuration by a few pressing operations. Further, by performing the above-mentioned work as post-processing after forming the matrix structure 5, it is possible to quickly respond to a change in the circuit configuration due to a design change, etc. If the matrix structure 5 is formed and stocked in advance It is possible to take agile measures even in a line of multi-product small-lot production.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic configuration of an electric bonding structure according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a basic configuration of a matrix structure according to the embodiment of the present invention.

FIG. 3 is a vertical sectional side view and a plan view schematically showing an intermediate molding step in a method for molding an electrical joint structure according to an embodiment of the present invention.

FIG. 4 is a vertical sectional side view and a plan view schematically showing a final forming step in a method for forming an electrical joint structure according to an embodiment of the present invention.

FIGS. 5A and 5B are a vertical sectional side view and a plan view showing a configuration of another joint uneven portion in the electrical joint structure according to the embodiment of the present invention.

FIG. 6 is a vertical sectional side view showing another arrangement configuration of the matrix elements in the electrical connection structure according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrical joining structure 3 Terminal 5 Matrix structure 7 Joining part 9 Matrix element 11 Joining uneven part 13 Mold 15 Punch 17 Slit 19 Engagement slit

Claims (7)

[Claims] 1. An electrical connection structure comprising a matrix structure to which all terminals are electrically connected, wherein the connection state is selectively released by post-processing. 2. The electrical joint structure according to claim 1, wherein the matrix structure is configured by arranging a plurality of matrix elements in a matrix and electrically connecting all the joints. An electrical junction structure characterized by the above-mentioned. 3. The electrical junction structure according to claim 2, wherein the matrix elements are arranged in a matrix so as to be appropriately combined so that a joint uneven portion formed with respect to the matrix element becomes a joint portion. An electrical junction structure characterized by being arranged in a three-dimensional manner. 4. The electrical connection structure according to claim 1, wherein when the connection state of the matrix structure is released, the electrical connection state of all the paths to the selected connection site is cut off. And an electrical connection structure that is configured by interrupting an electrical connection state of only some of the paths. 5. An intermediate molding step of molding a matrix structure in which all terminals are electrically connected, and selectively canceling an electrical connection state of a joining portion of the molded matrix structure by post-processing. And a final forming step of forming the electrical joint structure by the method. 6. The method for forming an electrical joint structure according to claim 5, wherein the intermediate molding step includes a step of forming a joint uneven portion with respect to the matrix element, and the formed joint uneven portion is joined. It is characterized by comprising a matrix element arranging step of arranging the elements in a matrix form by appropriately combining matrix elements so as to form a matrix, and a matrix structure forming step of electrically connecting all the joining parts of the arranged matrix elements. A method for forming an electrical joint structure. 7. The method of forming an electrical joint structure according to claim 5, wherein the final molding step comprises completely or partially removing a contact surface itself of a selected joint portion. Alternatively, a method for forming an electrical joint structure, wherein the electrical connection state of the joint portion of the matrix structure is selectively released afterward by cutting a path leading to the connection portion.