Damper

• US 9,212,512 B2
• Filed: 04/25/2013
• Issued: 12/15/2015
• Est. Priority Date: 08/07/2012
• Status: Active Grant

• Current Assignee: Piolax Incorporated
• Original Assignee: Piolax Incorporated
• Inventors: Nakasone, Hisashi
• Primary Examiner(s): MAH, CHUCK Y
• Application Number:
  US14/416,012
• Publication Number:
  US 20150176320A1
• Time in Patent Office: 964 Days
• US Class Current: 1/1
• CPC Class Codes: E05F 5/02 specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• CPC Class Codes: E05F 5/022 specially adapted for vehicles, e.g. for hoods or trunks
• CPC Class Codes: E05Y 2201/474 Compression springs
• CPC Class Codes: E05Y 2900/538 Interior lids
• CPC Class Codes: F16F 1/12 Attachments or mountings F16F1/041, F16F13/02 take precedence; of combinations of vibration damper and mechanical spring for vehicle suspension units B60G15/02
• CPC Class Codes: F16F 1/128 with motion-limiting means, e.g. with a full-length guide element or ball joint connections; with protective outer cover F16F1/121 takes precedence

Abstract

In a damper, a case member has a body, a flange formed at one end of the body, and a bottom formed at the other end of the body. A pin member has a head, that protrudes from an opening of the flange and a shaft that is connected to the head and has a stopper on an end thereof. The bottom has a retaining hole, into which the tip of the shaft is inserted, for stopping the stopper. The body has locking claws, for sandwiching the rim of the mounting hole against the flange.

Claims

1. A damper to be mounted on a mounting hole to thereby damp a damping-subject member upon abutment therewith, the damper including:

a case member including

a main body portion,

a flange portion provided at one end of the main body portion, and

a bottom portion provided at the other end of the main body portion;

a pin member including

a head portion that is disposed to protrude out of an opening portion provided to the flange portion, thereby abutting on the damping-subject member, and

a shaft portion having one end connected to the head portion and the other end provided with a retained portion; and

a spring member housed in the case member while surrounding the shaft portion, the spring member having one end abutting on the pin member and the other end abutting on the case member to bias the pin member in a direction that the pin member protrudes out from the opening portion,

wherein the bottom portion includes a retaining hole formed to receive the other end of the shaft portion to thereby retain the retained portion, and

wherein the main body portion includes an engagement pawl protruding outwardly from a lateral face in a radial direction, the engagement pawl being flexible inwardly in the radial direction, the engagement pawl sandwiching an edge of the mounting hole with the flange portion.

2. The damper of claim 1,

wherein the main body portion includes plural leg pieces formed by plural slits connected to the retaining hole in an axial direction.

3. The damper of any one of claim 1,

wherein the bottom portion includes a void portion along an outer circumference of the retaining hole, and

wherein the retaining hole is radially expandable with deformation of the void portion upon insertion of the retained portion thereinto.

4. The damper of claim 1,

wherein the main body portion includes a connecting portion continuously connecting a engagement face of the engagement pawl and a root portion of the flange portion.

5. A damper to be mounted on a mounting hole to thereby damp a damping-subject member upon abutment therewith, the damper including:

a case member including

a main body portion,

a flange portion provided at one end of the main body portion, and

a bottom portion provided at the other end of the main body portion;

a pin member including

a head portion that is disposed to protrude out of an opening portion provided to the flange portion, thereby abutting on the damping-subject member, and

a shaft portion having one end connected to the head portion and the other end provided with a retained portion; and

a spring member housed in the case member while surrounding the shaft portion, the spring member having one end abutting on the pin member and the other end abutting on the case member to bias the pin member in a direction that the pin member protrudes out from the opening portion,

wherein the main body portion includes an engagement portion formed to be mounted on the mounting hole

wherein the bottom portion includes a retaining hole formed to receive the other end of the shaft portion to thereby retain the retained portion, and

wherein the retaining hole is radially expandable upon insertion of the retained portion thereinto.

6. The damper of claim 5,

wherein the main body portion includes plural leg pieces formed by plural slits connected to the retaining hole in an axial direction.

7. The damper of claim 5,

wherein the bottom portion includes a void portion along an outer circumference of the retaining hole, and

wherein the retaining hole is radially expandable with deformation of the void portion upon insertion of the retained portion thereinto.