JP5667245B2 - Combination board with screw fixing part to fasten together - Google Patents

Description

  The present invention relates to a substrate (structure) in which a plurality of substrates are fastened together and a fitting formation portion is provided in fixed mounting of the substrate.

  2. Description of the Related Art Conventionally, in a combination substrate formed by combining a plurality of substrates adjacently arranged, a fixed support portion of each substrate uses the same number of fixing screws as a pair for each independent mounting hole and female screw portion.

  FIG. 8 is a view for explaining a combination substrate having a conventional fastening fastening portion. The substrate 10 shown in FIG. 8A is provided with a normal screw fixing portion 11 that is fixed to a support housing (not shown) by a substrate 10 alone. The substrate 14 is provided with a normal screw fixing portion 13 that is fixed to the support housing (not shown) with the screw 12 alone. The board | substrate 10 and the board | substrate 14 are adjacent, The joint fastening screw fixing | fixed part 16 fastened with the screw | thread 12 is provided in the edge | side which both contact. The co-tightening screw fixing portion 16 is provided with a screw hole 17 and is divided into a substrate 10 and a substrate 14 and a screw tightening surface is provided.

  The substrate 20 shown in FIG. 8B is provided with a normal screw fixing portion 21 that is fixed to the supporting housing (not shown) by screws 22 alone. The normal screw fixing portion 21 is provided with a screw hole 25 for mounting the screw 22. The board | substrate 20 and the board | substrate 23 are adjacent, The joint fastening screw fixing | fixed part 24 fastened with a screw is provided in the edge | side which both contact. The co-tightening screw fixing portion 24 is provided with a screw hole 26, and the tightening surface of the screw 22 is divided into a substrate 20 and a substrate 23.

  In Patent Document 1, the screw hole of one flexible wiring board and the screw hole of the other flexible wiring board of two adjacent flexible wiring boards are overlapped and fastened together using one screw. A technique for reducing the number of screws for attaching a flexible wiring board to a metal chassis is disclosed. The technique disclosed in Patent Document 1 is intended to reduce the number of mounting screws, reduce the part cost and the work man-hour, and two or more board surfaces with a fastening surface of one fixed screw seat surface. Are fixed at the same time.

Japanese Patent Application Laid-Open No. 2012-22020

  The conventional co-clamping fixing portion of the substrate shown in FIG. 8 simply divides the circular area (doughnut shape) of the fixing screw into two parts, and fixes the semicircular surfaces of the two substrates. However, in this configuration, a force is generated that the substrate is displaced in the normal direction from the semicircular central portion of the fixed portion of each substrate, and stress, strain, and deflection in the substrate and in the central portion are generated, which is sufficient. The screw cannot be tightened with a sufficient torque. In the technique disclosed in Patent Document 1, the shape of the end portion of the substrate forms a step, and a plurality of substrates cannot be fixed on the same plane.

  Therefore, in view of the above-described problems of the prior art, the object of the present invention is to provide stress and strain in the direction of the center of the board and the screw fixing portion when a plurality of adjacent boards are fastened together with screws on the same plane. Another object of the present invention is to provide a combination board having a screw fixing portion that can be tightened together to prevent the occurrence of deflection and tighten the screw with sufficient torque.

  In the present invention, a convex shape portion is provided on one substrate end surface and a concave shape portion is provided on the other substrate end surface to form a mating shape on the substrate end surface, and screws are fixed to side surfaces (mating portions) in the mating insertion direction. By providing the portion and separately arranging the screw tightening surfaces, the two substrates can be stably fixed without being shifted away from the axial force even when the screws are tightened.

  According to the present invention, when a plurality of adjacent substrates are tightened together with screws on the same plane, stress and strain in the center direction of the substrate and the screw fixing portion and the occurrence of deflection are prevented, and the screws are sufficiently torqued. It is possible to provide a combination substrate having a screw fixing portion that can be tightened together.

It is a figure explaining the combination board | substrate which has the fastening screw fixing | fixed part which fastens together the several board | substrate arrange | positioned adjacently on the same plane with a screw. It is a disassembled perspective view of the combination board | substrate which has the fastening screw fixing | fixed part which fastens together the several board | substrate arrange | positioned adjacently shown by FIG. 1 on the same plane with a screw. It is a figure explaining the uneven structure for retaining. It is a figure explaining the tenon structure for retaining. It is a figure which expands and demonstrates a co-fastening screw fixing | fixed part. It is a figure explaining the example which fixed together 3 board | substrates. It is a figure explaining embodiment which has a penetration prevention structure in each adjacent board | substrate. It is a figure explaining the board | substrate which has a joint fastening part of a prior art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view and a side view of a combination board having a screw fixing portion for fastening a plurality of adjacently arranged boards together with screws on the same plane.

  The substrate 33 and the substrate 37 are attached so that the substrates 33 and 37 are adjacent to each other via the female screw portion 31 and the other support portion 32 disposed on the support housing 30 to constitute a combined substrate. The substrate 33 and the substrate 37 are provided with a connecting portion 36 such as a connector or a contact. The substrate 33 has a normal screw fixing portion 34 that is fixed to the support housing 30 by inserting the screw 38 into the female screw portion 31 by itself. In addition, the other support portion 32 supports the lower portion of the substrate 33 so that the substrate 33 does not bend.

  In the embodiment of the present invention, a concave portion is provided on the end surface of the substrate 33, and a convex portion having a shape corresponding to the concave shape of the substrate 33 is provided on the end surface of the substrate 37. The concave part and the convex part form a fitting shape on the end surfaces of the substrates 33 and 37. Then, a co-tightening screw fixing portion 35 through which the screw 38 is inserted is provided on the side surface (matching portion) in the fitting insertion direction. The screw tightening surface is divided into the substrate 33 and the substrate 37, so that the two substrates 33, 37 are not shifted and separated from the axial force even when the screw 38 is tightened to the substrates 33, 37, and is stably provided. Can be fixed. In FIG. 1, two fastening screw fixing portions 35 are provided at two locations on the end surface where the substrate 33 and the substrate 37 are adjacent to each other. Note that a convex portion may be provided on the end surface of the substrate 33 and a concave portion may be provided on the end surface of the substrate 37.

  FIG. 2 is an exploded perspective view illustrating a substrate having a screw fixing portion for fastening a plurality of adjacently arranged substrates shown in FIG. 1 together with screws on the same plane. A plurality of internal thread portions 31 and other support portions 32 for supporting the substrate 33 and the substrate 37 are disposed on the support housing 30. A screw 38 is screwed into the female screw portion 31 via substrates 33 and 37. The other support portion 32 is a member that supports the substrates 33 and 37 so as not to bend to the back side. A convex portion is provided on the end surface of the substrate 37, and a concave portion is provided on the end surface of the substrate 33. The convex shape portion and the concave shape portion form a fitting shape on the end surfaces of the substrates 33 and 37.

  The direction in which the substrate 37 shown in the broken line is fitted to the substrate 33 is a direction DA that is horizontal to the substrate plane or a direction DB that is perpendicular to the substrate plane (including the direction DB). In the case of limiting to the direction DB perpendicular to the substrate plane, a relief structure (see FIG. 3) for retaining in the enlarged views of FIG. 3 and FIG. By making the structure (see FIG. 4), a fitting structure is formed in which the substrate 37 does not come off in the opposite direction of DA.

  FIG. 3 is a diagram for explaining a concavo-convex structure for preventing the detachment. The co-fastening screw fixing portion 35 is formed in a fitting shape portion formed at an adjacent end portion of the substrate 33 and the substrate 37. The co-fastening screw fixing part 35 is formed so that a screw hole 40 for mounting the screw 38 extends over both the boards at a place where the board 33 and the board 37 of the fitting shape part contact. A screw tightening surface 41 is arranged around the screw hole 40 so as to be divided into both substrates. The fitting forming portion is further provided with a concavo-convex structure 39 for preventing removal so that the substrate 37 does not come out in the direction of the arrow x. FIG. 4 is a view for explaining a tenon structure for retaining the stopper. In place of the concavo-convex structure 39 of FIG. 3, a tenon structure 42 is provided in the fitting shape portion.

  Further, by making this fitting shape portion into a wedge shape, the frictional force of the tightening surface strongly bites the fitting end surface by the screw tightening rotation direction (clockwise) torque 49, and The degree of adhesion increases (see FIG. 5B). Small errors in the heights of the two substrate fixing surfaces are absorbed by using a screw with a spring washer for the screw 38. In FIG. 5 (a), by providing the fastening screw fixing portion 35 in the fitting shape portion of the convex shape portion and the concave shape portion, the substrate 33 and the substrate 37 are relatively moved in the (two) arrow directions. It is illustrated that it can be prevented from shifting.

  Next, an embodiment of a combination substrate composed of three substrates will be described with reference to FIG. Each of the substrates 43, 44, and 45 has a convex portion and a concave portion at the end of each substrate. Adjacent concavo-convex shapes have a fitting shape with a corresponding shape, and one co-tightening screw fixing portion 47 is formed by the concavo-convex shape of the three substrates 43, 44, 45. The co-tightening screw fixing portion 47 is provided with a screw hole 46.

  In the embodiment of the present invention described above, the fastening stability can be obtained by at least one joint fastening screw fixing portion. FIG. 7 is a view for explaining an embodiment in which each of a plurality of adjacent substrates has a prevention structure. The number of screws used can be reduced by providing and combining the tenon structure 48 at a location (separate) from the joint fastening screw fixing portion. In this embodiment, a plurality of boards can be stably fixed with a screw fastening part that uses screws and a fixing part that does not use screws, and the number of board mounting screws used can be reduced. Man-hours can be reduced.

10 Substrate 11 Normal screw fixing portion 12 Screw 13 Normal screw fixing portion 14 Substrate 15 Other support portion 16 Fastening screw fixing portion 17 Screw hole

20 Substrate 21 Normal screw fixing part 22 Screw 23 Substrate 24 Fastening screw fixing part 25 Screw hole 26 Screw hole

DESCRIPTION OF SYMBOLS 30 Supporting body 31 Female thread part 32 Other support parts 33 Board | substrate 34 Normal screw fixing | fixed part 35 Co-fastening screw fixing | fixed part 36 Connection part 37 Substrate 38 Screw 39 Uneven structure 40 Screw hole 41 Screw clamping surface 42 Hozo structure 43 Substrate 44 Substrate 45 Substrate 46 Screw hole 47 Fastening screw fixing part 48 Hozo structure 49 Screw tightening rotation direction (clockwise) torque


DA Direction parallel to the substrate plane DB Parallel direction perpendicular to the substrate plane

Claims (4)

In a combination board having a co-fastening screw fixing part for co-fastening a plurality of boards arranged adjacent to each other with a screw,
One convex end on one substrate end face adjacent on the same plane, and a concave convex portion on the other end face of the substrate, and the convex shaped portion and one or more fitting forming portions formed by the concave shaped portion; , The fitting fastening portion is provided with the fastening screw fixing portion ,
The mating substrate is characterized in that the fitting forming portion has a wedge shape, and the end surfaces of the substrates bite into each other by torque in a tightening rotation direction of the screw .   The combination board according to claim 1, wherein the fitting forming portion further includes a retaining shape portion.   The combination substrate according to claim 2, wherein the retaining shape portion has an uneven structure or a ridge structure. The combination substrate according to any one of claims 1 to 3, wherein the one substrate end surface and the other substrate end surface further have a tenon structure .

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