JPS6139135Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to elastic mechanism parts, especially those equipped with a plurality of elastic bodies so that different elastic forces can be applied when attached to a single actuating body. Concerning things that can be effectively used as parts of automatic machines.

Conventional Structures and Problems There are conventional elastic mechanical parts of this type that use pneumatic pressure or hydraulic pressure, but they have the drawback of being complicated and expensive. Furthermore, as an elastic mechanical component using an elastic body such as a coil spring, there is one shown in FIG. 1a. That is, the pressure plates 5a and 5 are attached to the sliding shaft 4 that passes through the bearing part 2 of the holder 1 so as to be able to slide vertically.
Coil springs 3a and 3b of different elasticity are interposed between the pressure plates 5a and 5b and the holder 1 to urge the pressure plates 5a and 5b to protrude. This elastic mechanism part is the holder 1
is attached to a drive arm 6 that can move up and down, and by lowering the drive arm 6 in the X direction and pressing the pressure plates 5a and 5b against an object to be pressurized (not shown), As shown in FIG. 1b, different elastic forces Wa<Wb were applied to the coil springs 3a and 3b. However, when this elastic mechanical component is used for high-speed operation, there are drawbacks such as seizure occurring in the sliding parts of the bearing part 2 and the sliding shaft 4, which necessitates lubrication, and movable parts other than the coil springs 3a and 3b. Acceleration acts on the mass of the parts (pressure parts 5a, 5b and sliding shaft 4) and inertia force is generated, and this inertia force exceeds the elastic force of the coil springs 3a, 3b, causing mechanical vibrations and the coil springs 3a, 3b. 3b There are major problems as elastic mechanism parts used in high-speed automatic machines, such as the fact that the original elastic force does not act on the pressurized object (not shown), and it is difficult to reduce the size and weight of the mechanism due to the above structural constraints. Problems such as this remained.

Purpose of the invention The purpose of the invention is to solve these conventional problems and provide an elastic mechanism component that can exert appropriate elastic force even when used in high-speed operation and can be made smaller and lighter. .

Structure of the invention For this reason, the present invention is constructed by providing a plurality of bent-shaped leaf spring elastic bodies formed by cutting grooves in alternating directions from opposite directions on the same object. To provide an elastic mechanism component that has no movable parts other than a spring elastic body, has very little influence of inertia even during high-speed operation, can exert a stable elastic force, and can be configured to be small and lightweight.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be explained below with reference to FIGS. 2 and 3. In FIGS. 2a and 3, 1
Reference numeral 1 denotes a rectangular parallelepiped-shaped object constituting the elastic mechanism component 15, which is made of a tempered metal material or a non-metallic material. This rectangular parallelepiped-shaped object 11 has cut grooves 13 alternately machined at the bottom of both halves with the center line 10 as a boundary by wire electric discharge machining, laser machining, photo etching, etc., and has a shape bent to the left. The plate spring elastic body 12a has a stronger elastic force than the plate spring elastic body 12a on the right side.
b is formed. Each leaf spring elastic body 12a, 1
A pressure surface 14 is provided on the lower surface of 2b. In addition,
In order to change the elastic force of each of the leaf spring elastic bodies 12a and 12b, the thickness and total length of the bent leaf spring elastic bodies may be changed by machining the cut grooves 13.

Next, the function of this elastic mechanism component 15 will be explained. This elastic mechanism component is fastened with a screw 17 to the lower end mounting surface of a drive arm 16 that is movable up and down. Then, the drive arm 16 is lowered in the X direction to press the pressing surfaces 14 of the leaf spring elastic bodies 12a, 12b against a pressurized object (not shown). Then, the leaf spring elastic bodies 12a and 12b are each strained, and different elastic forces Wa/Wb as shown in FIG. 2B are applied under a certain strain state.

FIGS. 4a and 4b show another embodiment, showing an elastic mechanism component 15 in which four leaf spring elastic bodies 12a, 12b, 12c, and 12d having mutually different elastic forces are formed on the same object 11. By forming a plurality of leaf spring elastic bodies by processing the cut grooves 13 on the same object 11 in this way, it is possible to apply many different types of elastic forces to a small space as shown in FIG. 4b.

Effects of the Invention According to the elastic mechanism component of the present invention, as is clear from the above explanation, a plurality of bent plate spring elastic bodies are formed on the same object by cutting grooves.
Conventional parts such as sliding shafts, pressure plates, and coil springs are no longer required, making it smaller and lighter. Since there are no sliding parts, there are no seizure problems, and there are no moving parts other than the elastic body of the leaf spring. Therefore, the influence of inertia is extremely small during high-speed operation, and a stable elastic force can be applied at high speed. In addition, as shown in FIGS. 4a and 4b, a plurality of different elastic forces can be applied to a small space, and its industrial value is great as an elastic mechanism component used in automatic machines and the like.

[Brief explanation of the drawing]

Fig. 1 shows a conventional example, a is a longitudinal sectional front view, b is an elastic force distribution diagram, Figs. 2 and 3 show an embodiment of the present invention, Fig. 2a is a front view, Fig. 2 3 is a perspective view, FIG. 4 shows another embodiment of the present invention, a is a front view, and b is an elastic force distribution diagram. 11 is an object, 12a and 12b are leaf spring elastic bodies,
13 is a cut groove, 14 is a pressure surface, and 15 is an elastic mechanism component.

Claims (1)

[Scope of utility model registration request] An elastic mechanism component comprising a plurality of bent plate spring elastic bodies formed by cutting grooves alternately from opposing directions on the same object.