JP4740016B2 - Damping mechanism using inclined oval coil spring - Google Patents

Description

  The present invention relates to a shock absorbing mechanism using a tilted oval coil spring, which is widely used for vibration proofing, earthquake proof structure and the like.

In general, as a vibration-proof material used for a vibration-proof device, a material having an excellent function of absorbing and attenuating vibration and sound and having high strength is desired. Anti-vibration rubber, air springs, metal springs, etc. are known, for buildings, transportation and other engines, for example, anti-vibration rubber is attached to vehicles, machines and other equipment to prevent vibration propagation Or, it is usually used for the purpose of buffering (see, for example, Patent Document 1).
JP 2001-304336 A

  However, in the preceding example described above, it has been desired to improve the function of the inclined oval coil spring when it is subjected to a load.

  The present invention has been made in view of the above-mentioned circumstances, and has been further studied based on Patent Document 1 to improve its function, and the deformation of the spring when subjected to a load of a tilted oval coil spring. It is an object of the present invention to provide a buffer mechanism using a tilted oval coil spring that absorbs the amount of energy and eliminates the generation of useless energy, and has improved vibration proofing and noise reduction.

  The present invention can solve the above problems by providing the following configuration.

(1) An upper flange and a spring of a spring bearing flange comprising an upper flange and an inclined oval coil spring in which a coil is inclined in one direction with a pitch angle α ₀ indicating an inclination, and a rubber-like elastic body. Predetermined grooves are provided on the receiving flange opposite to each other, and the inclined oval coil springs are loosely fitted and installed in the groove with respect to the axial direction of the coil spring, and further on both sides of the grooves on the spring receiving flange side. A spring unit Ys is formed by separating the rubber-like elastic body from the upper flange into a single layer or a laminate in a recess provided at an edge, and the inclined oval coil spring against a load acting on the upper flange. the deformation ratio of the pitch angle alpha ₀ indicating the degree of inclination exert the inclined oval coil spring within the scope exerts the rubbery elastomer then is engaged with said upper flange, which And characterized in that more the in inclined oval coil spring cooperating configured to receive the full load, and a further configuration which combines together the bearing unit Yb for absorbing axial deformation amount of the slanted oval coil spring A shock absorbing mechanism using a tilted oval coil spring.

(2) The spring unit Ys has a single-stage or multi-stage structure with a spring receiving flange having an upper flange formed by arranging a plurality of pairs of the inclined oval coil spring and the rubber-like elastic body in parallel. 1) The buffer mechanism using the inclined type oval coil spring as described above.

(3) The bearing unit Yb includes upper and lower bearing flanges that are opposed to each other. The bearing unit Yb includes groove portions that engage with the opposing surfaces of the flanges, and includes a plurality of rolling elements that roll along the groove portions. A shock absorbing mechanism using the inclined oval coil spring according to (1) above.

  (4) The tilting type oval coil spring-use buffer mechanism according to the item (3), wherein the rolling element is any one of a sphere, a cylindrical roller, and a frustoconical roller.

  According to the present invention, a tilt type oval coil spring having a large deformation rate and a high function of absorbing and absorbing vibration and sound is used in a recumbent state with respect to a small load fluctuation, and an elastic body is provided side by side, so that Distributing stress to mitigate impacts caused by earthquakes and other external forces, and absorbs the deformation of the spring, improving silence and further improving the life of vibration-proof and earthquake-resistant members And an economic buffering mechanism can be provided.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a buffer mechanism using a tilted oval coil spring according to the present invention will be described below.

  FIG. 1 is a longitudinal sectional view showing a main part configuration in Example 1, FIG. 2 is a longitudinal sectional view showing a main part configuration in Example 2, and FIG. 3 is an enlarged cross-sectional view showing a main part configuration in the embodiment. (A) is a cross-sectional view taken along a plane orthogonal to the axial direction of the coil spring, (b) is a cross-sectional view along AA, FIG. 4 is an enlarged cross-sectional view showing a state when a load is applied, and (a) is a coil spring. FIG. 5B is a cross-sectional view taken along the line AA, FIG. 5 is a vertical cross-sectional view showing the configuration of the main part in Example 3, and FIG. 6 is the main part in Example 4. FIG. 7 is an explanatory view showing a main part configuration in Example 5, (a) is a schematic perspective view, (b) is a CC cross-sectional view, and (c) is a cross-sectional view of (b). FIG. 8 is a longitudinal sectional view showing the configuration of the main part in the sixth embodiment.

An upper flange 1 of a spring bearing flange 2 provided with an upper flange 1 is formed by combining an inclined oval coil spring TOS having a coil inclined in one direction with a pitch angle α ₀ indicating an inclination and a rubber-like elastic body 3. And the spring receiving flange 2 are provided with predetermined groove portions 1a and 2a opposite to each other, and the inclined oval coil spring TOS is placed in the groove portions 1a and 2a so as to be loosely fitted and installed with respect to the axial direction of the coil spring. The rubber-like elastic body 3 is separated from the upper flange 1 (hx in the figure) in the recesses 3a and 3a provided on both upper edges of the groove portion 2a on the spring receiving flange 2 side, and arranged in a single layer or in a stacked manner. deformation rate of the pitch angle alpha ₀ indicating the inclination of the inclined oval coil spring TOS to a load P acting on the upper flange 1 exert the inclined oval coil spring TOS within the scope as well as setting, with The rubber-like elastic body 3 is engaged with the upper flange 1 so that it receives a full load in cooperation with the inclined oval coil spring TOS. Further, the axial direction of the inclined oval coil spring TOS ( (Longitudinal direction) The bearing unit Yb for absorbing deformation is integrally combined.

  The bearing unit Yb has upper and lower bearing flanges 4 and 5 that are opposed to each other. The bearing units Yb are provided with grooves 4a and 5a that engage with the opposing surfaces of the flanges. Rolling elements Br.

  As shown in the figure, the spring unit Ys is a combination of the inclined oval coil spring TOS, the rubber-like elastic body 3, the upper flange 1, and the spring receiving flange 2.

In the case of the first embodiment, as shown in FIG. 1, a plurality of inclined oval coil springs TOS and rubber-like elastic bodies 3 are arranged and sandwiched between the upper flange 1 and the spring bearing flange 2 and rolled downward. An upper bearing flange 4 and a lower bearing flange 5 that sandwich the sphere 6 that forms the moving body Br are attached to form a support body, and a groove (in this case, a rolling shaft provided along the longitudinal axis of the inclined oval coil spring TOS). Since the rolling is performed using arcuate grooves 6a and 5a engaged with the sphere 6 forming the moving body Br as guides, a load P is generated and the state shown in FIGS. ), (B), the pitch angle α ₀ indicating the inclination of the inclined oval coil spring TOS becomes α ₁ and the inclination becomes large, and when the coil spring sinks, the inclined oval coil spring TOS is elongated. Deform in the direction Although resistance occurs, the bearing unit Yb absorbs deformation energy that tends to shift due to the rolling operation of the sphere 6 forming the rolling element Br (rolling in the direction of canceling the distortion (along the arrow A)). Vibration and noise can be prevented.

  In the second embodiment, as shown in FIG. 2, the inclined oval coil spring TOS and the rubber-like elastic body 3 (laminated rubber-like elastic body in the figure) are arranged in a double row, and the upper flange 1 and the spring receiving flange are arranged. This is an example in which the spring unit Ys sandwiched between 2 and 2 forms a multi-stage structure with a multi-stage structure (in this case, a three-stage structure) and the bearing unit Yb is integrally combined at the bottom. Description of other parts similar to those of the first embodiment is omitted.

  In the third embodiment, as shown in FIG. 5, the inclined oval coil spring TOS and the rubber-like elastic body 3 are arranged in a double row in parallel, and are sandwiched between the upper flange 1 and the spring bearing flange 2 to provide a single stage type. This is a case where a bearing unit Yb composed of an upper bearing flange 4 and a lower bearing flange 5 sandwiching a spherical body 6 forming a rolling element Br is provided above a spring unit Ys forming a single row as a double row structure. Description of other parts similar to those of the first embodiment is omitted.

  As shown in FIG. 6, the fourth embodiment is a case where the bearing unit Yb is attached to the uppermost portion of the multi-stage spring unit Ys as opposed to the second embodiment. Description of other parts similar to those in the first and second embodiments will be omitted.

  As shown in FIGS. 7A and 7B, the fifth embodiment is a case where the overall configuration is a disc shape, and includes a disc-shaped upper flange 7 and a disc-shaped spring receiving flange 8. A slanted oval coil spring TOS and a rubber-like elastic body 3 are arranged in parallel to form a spring unit Ys-1, and a disk-like member is formed below the spring unit Ys-1. This is a case in which a bearing unit Yb-1 having an upper bearing flange 9 and a lower bearing flange 10 and sandwiching a plurality of frustoconical rollers 11 forming a rolling element Br between them is additionally provided from above. When a load is applied, if the inclined oval coil spring TOS is deformed by increasing the inclination angle toward the inclined side, the circumferential bending occurs, and the disk-shaped spring receiving flange 8 and the upper bearing flange 9 are arranged so as to cancel this action. Rolling element Br in the direction of rotation A plurality of truncated conical rollers 11 to be formed can be maintained lower bearing flange 10 which is a bottom of the foundation safe state is fixed to absorb the deformation amount of the driven to slanted oval coil spring TOS. FIG. 7C illustrates the shape of the frustoconical roller 11 and spreads outward from the center CL of the disk toward the outer circumference, drawn along the spread angle β of the radial line segment. The frusto-conical roller is constructed. The shape, size and number of the frustoconical rollers 11 can be freely determined according to the size of the disk and the size of the load.

  Reference numeral 12 denotes an assembly-type detachable rotating shaft.

  As shown in FIG. 8, the sixth embodiment is a case where the rolling element Br of the fifth embodiment is replaced with a sphere 15, and other configurations are the same as those of the fifth embodiment.

  Reference numerals 9a and 10a in FIG. 7B are guide groove portions that engage with the frustoconical rollers 11 forming the rolling elements Br, and reference numerals 13a and 14a in FIG. 8 indicate the rolling elements Br. It is the groove part of the cross-sectional arc shape for a guide engaged with the spherical body 15 which forms.

  Furthermore, the rolling elements constituting the bearing unit can be freely selected from spherical, cylindrical rollers and frustoconical rollers according to the conditions of load, structure, etc. There is no limitation as long as it can be applied to a load such as a product made of synthetic resin or the like.

The longitudinal cross-sectional view which shows the principal part structure in Example 1 The longitudinal cross-sectional view which shows the principal part structure in Example 2 The cross-sectional enlarged view which shows the principal part structure in embodiment, (a) Cross-sectional view along the surface orthogonal to the axial direction of a coil spring, (b) AA cross-sectional view Cross-sectional enlarged view showing a state when a load is applied, (a) a cross-sectional view along a plane orthogonal to the axial direction of the coil spring, (b) AA cross-sectional view The longitudinal cross-sectional view which shows the principal part structure in Example 3 The longitudinal cross-sectional view which shows the principal part structure in Example 4 Explanatory drawing which shows the principal part structure in Example 5, (a) Typical perspective view, (b) CC sectional drawing, (c) is a principal part top view of (b). The longitudinal cross-sectional view which shows the principal part structure in Example 6

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 7 Upper flange 2, 8 Spring receiving flange 3 Rubber-like elastic bodies 4, 9, 13 Upper bearing flange 5, 10, 14 Lower bearing flange 6, 15 Sphere 11 Frozen conical roller Br Rolling element TOS Inclined oval coil spring Yb Bearing unit Ys Spring unit

Claims (4)

An inclined oval coil spring having a coil inclined in one direction with a pitch angle α ₀ indicating an inclination is combined with a rubber-like elastic body, and an upper flange and a spring receiving flange of a spring receiving flange having an upper flange are combined. Is provided with a predetermined groove portion opposed to each other, and the inclined type oval coil spring is laid sideways with respect to the axial direction of the coil spring and installed in the groove portion, and is further provided on the upper edge portions on both sides of the groove portion on the spring receiving flange side. A spring unit Ys is formed by separating the rubber-like elastic body from the upper flange into a single layer or a laminate in the provided recess, and the inclination of the inclined oval coil spring with respect to the load acting on the upper flange exercising the inclined oval coil spring within the deformation rate coverage of the pitch angle alpha ₀ indicating the exerts the rubber-like elastic body then is engaged with said upper flange, thereby Serial configured to receive the full load in inclined oval coil spring cooperating with, characterized by further has a structure which combines together the bearing unit Yb for absorbing axial deformation amount of the slanted oval coil spring A shock absorbing mechanism using an inclined oval coil spring. The spring unit Ys has a single-stage or multistage structure for a spring receiving flange having an upper flange formed by arranging a plurality of pairs of the inclined oval coil spring and the rubber-like elastic body in parallel. The buffer mechanism using the inclined oval coil spring according to claim 1. The bearing unit Yb has a pair of upper and lower bearing flanges that are opposed to each other, and each of the bearing units Yb is configured by a plurality of rolling elements that are provided with grooves that engage with the opposing surfaces of the flanges and that roll along the grooves. The shock absorbing mechanism using the inclined type oval coil spring according to claim 1.   4. The buffer mechanism using a tilted oval coil spring according to claim 3, wherein the rolling element is formed of any one of a sphere, a cylindrical roller, and a frustoconical roller.

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