Damper device

• US 6,507,976 B2
• Filed: 06/21/2001
• Issued: 01/21/2003
• Est. Priority Date: 07/06/2000
• Status: Expired due to Fees

• Current Assignee: Nifco Incorporated
• Original Assignee: Nifco Incorporated
• Inventors: Ichimaru, Takahide
• Primary Examiner(s): Mah, Chuck Y.
• Application Number:
  US09/885,533
• Publication Number:
  US 20020003993A1
• Time in Patent Office: 579 Days
• Field of Search: 16/82, 16/85, 16/86.R, 16/86.A, 16/21, 248/188.4, 248/410, 248/411, 411/383, 411/384, 411/535, 411/182, 411/349, 411/549, 411/550, 411/551, 180/69.21, 180/89.17, 292/DIG.14
• US Class Current: 16/82
• CPC Class Codes: E05F 5/022 specially adapted for vehicles, e.g. for hoods or trunks
• CPC Class Codes: E05Y 2900/546 Tailboards, tailgates or sideboards opening upwards
• CPC Class Codes: F16B 21/075 the socket having resilient parts on its inside and outside
• CPC Class Codes: F16B 21/076 the socket having a resilient part on its outside F16B21/075 takes precedence
• CPC Class Codes: F16B 37/042 locking by rotation
• CPC Class Codes: F16B 5/0258 using resiliently deformable sleeves, grommets or inserts F16B43/001 takes precedence
• CPC Class Codes: F16B 5/0657 at least one of the plates providing a raised structure, e.g. of the doghouse type, for connection with the clamps or clips of the other plate

Abstract

A damper device includes a damper main body, and a grommet fixed to a fixing member. The damper main body includes a shaft portion having a plurality of engagement projection portions extending along a peripheral direction at predetermined intervals in an axial direction thereof. The grommet has a tube portion, an engaging device to be fixed to the fixing member formed outside the tube portion, and an elastic anchor piece disposed inside the tube portion to engage the engagement projection portions of the shaft portion pressed into the tube portion. When a stopper is formed outside the shaft portion and tightened to the grommet, the damper main body can be securely fixed to the grommet.

Claims

1. A damper device comprising:

a damper main body including a shaft portion having a plurality of engagement projection portions extending along a peripheral direction at predetermined intervals in an axial direction thereof;

a grommet having a tube portion, engaging means to be fixed to a fixing member formed outside the tube portion, and an elastic anchor piece disposed inside the tube portion to engage the engagement projection portions of the shaft portion pressed into the tube portion; and

a stopper engaging the shaft portion and moving in the axial direction thereof, said stopper abutting against the grommet through the shaft portion to fix the damper main body to the grommet.

2. A damper device according to claim 1, wherein said engaging means includes an outwardly-extending flange provided at one end of the tube portion, and an elastic nipping piece formed outside the tube portion for nipping the fixing member together with the flange.

3. A damper device according to claim 1, wherein said damper main body includes a male screw on the shaft portion, said engagement projection portions being provided at one end portion of the shaft portion, and the stopper includes a female screw engaging the male screw so that when the stopper abuts against the grommet while engaging the shaft, a projecting length of the damper main body projecting from the grommet is fixed.

4. A damper device according to claim 1, further comprising an abutment projection formed on the shaft to extend in the axial direction at a portion where the engagement projection portions are provided, said abutment projection abutting against the elastic anchor piece when the shaft portion is rotated.