JPH068804U - Fixed structure of multiple plates - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the size of the screw part when fixing multiple plates with spacers and bolts at predetermined intervals. [Structure] A boss 2 having step surfaces 5 and 6 is projectingly provided on a base 1, plates 3 and 4 are supported by the step surfaces 5 and 6, and a spacer 8 and a bolt head 9a pressurize and fix them. The force F acting in the lateral direction is
The bolt 9 may be small because it is received by the boss 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for fixing a plurality of plate bodies at intervals.

[0002]

[Prior art]

 As a means for fixing a plurality of plate bodies at intervals, for example, the means shown in FIG. 3 has been used. In FIG. 3, a is a base, b is a boss protruding from this, and a plate c ₁ , C₂Were placed on the boss b by being stacked via the spacer d, and were fixed by tightening the bolt e screwed into the boss b. However, with such fixing means, the plate c₁, C₂When a lateral force F is applied to the bolt e, all the bending and shearing forces due to the force F are applied to the bolt e, so that the screw portion cannot be downsized.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to obtain a means capable of strongly fixing a plurality of plate bodies even with a small diameter bolt.

[0004]

[Means for Solving the Problems]

 Means for Solving the Problems According to the present invention, a plurality of plate bodies are constructed by stacking a plurality of plate bodies on a base portion via a spacer and fastening each plate body on the base portion with screws passing through the plate body and the spacer. In the fixing structure of, the stepped boss protruding from the base and having the outer diameter gradually reduced, the plate body fitted on the cylindrical surface of the boss and placed on the stepped surface, and the upper end surface overlapping the plate body It is characterized by including a spacer having the same height as the upper step surface and a bolt for applying the fastening force of the uppermost plate.

[0005]

[Action]

 Since the above-mentioned means are provided, each plate is supported on each step surface of the boss and fixed by being pressurized by the spacer or directly by the bolt. The bending and shearing forces due to the lateral force applied to the plate are received by the boss, and the bolts are only tensioned, so even if the bolt has a small diameter and a short screw length, it can withstand the load. You can

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a base portion, 2 is a boss projecting from the base portion, and the plate bodies 3 and 4 are fixed to the boss 2 at a predetermined interval. The boss 2 is provided with step surfaces 5 and 6 for determining the distance, cylindrical surfaces 5a and 6a whose outer diameters are successively reduced, and a screw hole 7 is formed at the center. A ring-shaped spacer 8 is interposed between the plate bodies 3 and 4, and the thickness of the plate body 3 and the spacer 8 is substantially equal to the height of the cylindrical surface 5a.

A bolt 9 having a head 9 a is screwed into the screw hole 7, and when the topmost plate 4 is pressed by the head 9 a, the plate 4 is crimped onto the step surface 6 and the spacer 8 Is pressed, and the lower plate 3 is pressure-bonded to the step surface 5 by the spacer 8.

Since the plate bodies 3 and 4 are fixed by the single bolt 9 because of the above configuration, even if a lateral force F is applied to the plate bodies 3 and 4, this force F is It is supported by the boss 2 via the cylindrical surfaces 5a, 6a and does not act on the bolt 9 as a bending or shearing force. Therefore, the bolt 9 can be used with a small diameter and a short length since only the tension due to screwing is applied.

Next, another embodiment will be described with reference to FIG. In this embodiment, the boss 11 is formed separately from the base 1, a round hole 12 is provided in the center instead of the screw hole 7, and a screw hole 13 concentric with the round hole 12 is formed at the base. 1, the bolt 14 is screwed into the screw hole 13 through the round hole 12. The outer surface shape of the boss 11 is the same as that of FIG.

When a lateral force F is applied to the plates 3 and 4, a torque is generated in the boss 11, but the torque is received by the reaction force F ′, and the lateral displacement applied to the boss 11 is prevented from occurring. Since it is received by the frictional force between 1 and the base portion, only the tension acts on the bolt 14, and even a bolt having a small diameter and a short screw portion can sufficiently withstand the tension.

[0011]

[Effect of device]

 As described above, according to the present invention, it is possible to fix a plurality of plates at a predetermined interval, and the lateral force applied to each plate is received by the boss, and the bolt is bent or sheared. Since it does not act, the bolt can be made small in diameter and short even though it can be firmly fixed, and the bolt and screw hole can be easily processed, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a vertical sectional view of another embodiment.

FIG. 3 is a vertical sectional view of a conventional example.

[Explanation of symbols]

1 Base 2, 11 Boss 3, 4
Plate 5, 6 Step surface 5a, 6a Cylindrical surface
8 Spacer 7,13 Screw hole 9,14 Bolt

Claims (1)

[Scope of utility model registration request] 1. A fixing structure for a plurality of plates, wherein a plurality of plates are stacked on a base via a spacer, and each plate is fastened to the base with a screw passing through each plate and the spacer. A stepped boss projecting from the boss, the outer diameter of which gradually decreases, a plate body fitted on the cylindrical surface of the boss and placed on the stepped surface, and an upper end surface that overlaps with the plate body and has an upper step surface A fixing structure for a plurality of plate bodies, comprising a spacer having the same height and a bolt for applying a fastening force of the uppermost plate body.