JPH061875U - Elastic fastener - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an elastic fastener that can be fastened in a constant fastening state. A cylindrical body 10 made of a rubber-like elastic material and an insert member 12 having an umbrella fin 13 at one end and a bulge portion at the other end are provided, and the insert member 12 is the center of the cylindrical body 10. The cylindrical body was configured to be compressed and radially expanded when inserted into the hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elastic fastener used for vibration-proof fixing of panels and casings, and for supporting vibration-proofing of lightweight devices.

[0002]

[Prior art]

 As shown in FIG. 3, a conventional elastic fastener has a rubber cylinder body 3 in which a flange portion 1 is formed at one end and a metal nut 2 is embedded in the vicinity of the other end, and the rubber cylinder body 3 is inserted into a central hole of the rubber cylinder body 3. And a fastening screw 4 screwed into the metal nut 2. In this elastic fastener, the fastening screw 4 is screwed into the metal nut 2 and the rubber cylindrical body 3 is compressed and expanded in the radial direction, so that the two plate members 5 and 6 arranged on both sides of the flange portion 1 are supported for vibration isolation. To do.

[0003]

[Problems to be solved by the device]

 Such conventional elastic fasteners have the following drawbacks. That is, since the metal nut 2 embedded in the rubber cylindrical body 3 needs to be firmly bonded to the rubber cylindrical body 3, it is necessary to perform vulcanization bonding which is troublesome. Therefore, the manufacturing cost becomes high. In addition, if the screwing amount of the fastening screw 4 with respect to the metal nut 2 is not constant when installing, stable vibration isolation support may not be performed, or the rubber part may excessively bend and shorten the life. Torque management is required to keep the screwing amount of the fastening screw 4 constant. Further, the excessive tightening of the fastening screw 4 facilitates the peeling of the metal nut 2 from the rubber cylindrical body 3.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an elastic fastener that can be always fastened in a fixed fastening state.

[0005]

[Means for Solving the Problems]

 The elastic fastener of the present invention comprises a cylindrical body made of a rubber-like elastic material, an insert member having an umbrella fin at one end and a bulge portion at the other end, and an insert member inserted into the cylindrical body. And the cylindrical body is configured to be compressed and expand in the radial direction when the insert member is inserted into the center hole of the cylindrical body.

[0006]

[Action]

 By pressing the insert member strongly from one end of the cylinder with the two plate members to be fastened arranged in the cylinder, the umbrella fin at the tip opens outward when exposed from the other end of the cylinder. Is locked to the end surface of the cylindrical body, and the bulging portion at the other end of the insert member is locked to the one end side of the cylindrical body. At this time, since the cylindrical body is compressed and bulges in the radial direction, the plate member is pressed to support the vibration damping.

[0007]

【Example】

 Hereinafter, the elastic fastener of the present invention will be described with reference to the embodiment shown in the drawings. 1 and 2 are sectional views showing an embodiment of the present invention. In FIG. 1, a cylindrical body 10 has a flange portion 11 at one end and is made of a rubber-like elastic material. The side portion of the cylindrical body 10 may be slightly curved like an hourglass in advance, but may be a right cylindrical shape. A shaft-shaped insert member 12 is inserted into the center hole of the cylindrical body 10.

The insert member 12 has an umbrella fin 13 at one end and a bulging portion 14 having a trapezoidal cross section at the other end, and is made of a plastic having an appropriate tensile strength. The fin 13 is normally open, but has elasticity so that it can be closed when pushed from the outside. A peripheral groove 15 is provided near the bulging portion 14. The elastic fastener of the present invention is constructed as described above, and is attached as follows in use. For example, as shown in the figure, a movable plate member 16 such as a device is arranged on the lower end side of the cylindrical body 10, and a fixed plate member 17 such as another device is arranged on the lower surface of the flange portion 11 of the cylindrical body. By strongly pushing the insert member 12 from the lower end of the cylindrical body 10 in this state, when the umbrella-shaped fin 13 at the tip is exposed from the upper end of the cylindrical body 10, it opens outward and engages with the upper end surface of the cylindrical body 10. Then, the bulging portion 14 at the other end of the insert member 12 is locked in the tapered hole 18 of the movable plate member 16 below the cylindrical body. At this time, the cylindrical body 10 is compressed and expanded in the radial direction to support the plate member 16 in a vibration-proof manner. The appropriate load is determined by the length of the insert member 12.

When removing, by pushing up the movable plate member 16 to compress the cylindrical body 10 to expose the bulging portion 14 to the outside as shown in FIG. 2, and cutting the circumferential groove 15 with scissors or the like. The insert member 12 may be pulled out from the cylindrical body 10, and then the cylindrical body 10 may be pulled out from the fixing plate member 17.

The present invention is not limited to the use mode shown in FIG. 1, but can be obtained by arranging two plate members for fastening as shown in FIG. 3 on both sides of the flange portion 11 of the cylindrical body. It can be used as well. In this case, another movable plate member having a tapered hole capable of locking the bulging portion 14 is arranged on the lower surface of the cylindrical body 10 so that the bulging portion 14 of the insert member 12 can be locked. Alternatively, the bulging portion 14 may be hollow so that the fastening can be released only by strongly pushing it out from the movable plate member 16.

[0011]

[Effect of device]

 As described above, the elastic fastener of the present invention compresses the cylindrical body only by inserting the insert member having the umbrella fin at one end and the bulged portion at the other end into the cylindrical body. Since it is configured to expand, the tightening can always be performed in a constant tightening state without requiring torque management. Further, the insert member can be easily molded by plastic injection molding.

[Brief description of drawings]

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

FIG. 2 is a vertical cross-sectional view showing a state when the same embodiment is detached.

FIG. 3 is a longitudinal sectional view showing a conventional elastic fastener.

[Explanation of symbols]

10 ... Cylindrical body, 11 ... Flange part, 12 ... Insert member, 13 ... Fin, 14 ... Swelling part

Claims (1)

[Scope of utility model registration request] 1. An insert member comprising: a cylindrical body made of a rubber-like elastic material; and an insert member having an umbrella fin at one end and a bulge portion at the other end and inserted into the cylindrical body. An elastic tightening tool configured such that the cylinder is compressed and expands in a radial direction when the is inserted into a center hole of the cylinder.