Fluid free damper

• US 5,542,508 A
• Filed: 06/26/1995
• Issued: 08/06/1996
• Est. Priority Date: 06/26/1995
• Status: Expired due to Fees

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Van Erden, Donald L., Toczycki, Jan
• Primary Examiner(s): Oberleitner, Robert J.
• Assistant Examiner(s): BARTZ, CLIFFORD T
• Application Number:
  US08/494,682
• Time in Patent Office: 407 Days
• Field of Search: 188/83, 188/271, 188/290, 188/268, 188/280, 188/306, 74/574, 296/37.12, 248/566, 248/568
• US Class Current: 188/130
• CPC Class Codes: E05F 5/00 Braking devices, e.g. checks; Stops; Buffers construction of pneumatic or liquid braking devices E05F3/00; braking devices, buffers or end stops on drawers for tables, cabinets or like furniture A47B88/473; combined with devices for holding wings open E05C17/00; devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing E05C17/04
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/242 using threshold speed
• CPC Class Codes: E05Y 2201/26 Mechanical friction
• CPC Class Codes: E05Y 2201/266 rotary
• CPC Class Codes: E05Y 2900/538 Interior lids
• CPC Class Codes: F16F 1/445 the spring material being contained in a generally closed space F16F1/393 takes precedence
• CPC Class Codes: F16F 15/10 Suppression of vibrations in rotating systems by making use of members moving with the system by balancing F16F15/22 ; yielding couplings F16D3/00 ; with flywheels acting variably or intermittently F16H ; construction providing resilience or vibration-damping for gear elements F16H55/14
• CPC Class Codes: F16F 2236/045 the spring material being generally enclosed
• CPC Class Codes: F16F 7/02 with relatively-rotatable friction surfaces that are pressed together F16F7/01 takes precedence; one of the members being a spring F16F13/02 ; friction devices between relatively-movable parts of a hinge E05D11/08; braking devices for wings E05F5/00

Abstract

A fluid free damper, comprising a spindle member; housing means mounted for relative eccentric rotation with respect to the spindle member; and engagement means interposed between the spindle member and the housing means for rotation along with one of the housing means and the spindle member with respect to the other one of the housing means and the spindle member so as to be deformably compressed between the spindle member and the housing means and thereby generate a resistive damping force between the housing means and the spindle member in response to the eccentric rotation of the one of the housing means and spindle member with respect to the other one of the housing means and the spindle member.

Claims

1. A fluid free damper, comprising:

first and second members operably positioned proximate to each other one of said first and second members comprising an inelastic spindle member;

means mounting one of said first and second members for eccentric rotatable movement with respect to the other one of said first and second members; and

substantially solid engagement means positioned between said first and second members so as to be deformably compressed between said first and second members and thereby generate a resistive damping force between said first and second members upon said eccentric rotatable movement of said one of said first and second members with respect to said other one of said first and second members.

2. The damper as defined in claim 1 wherein said engagement means provide a resistive force which increases with increasing speed between said first and second members.

3. The damper as defined in claim 1, wherein said engagement means are formed front a substantially non-shearable yet deformable material.

15. The damper as set forth in claim 1, wherein:

one of-said first and second members comprises a closure.

16. The damper as set forth in claim 15 wherein:

said closure comprises a vehicle glove box door.

4. A fluid free damper, comprising:

a spindle member;

housing means mounted for relative eccentric rotation with respect to said spindle member; and

engagement means interposed between said spindle member and said housing means for rotation along with one of said housing means and said spindle member with respect to the other one of said housing means and said spindle member so as to be deformably compressed between said spindle member and said housing means and thereby generate a resistive damping force between said housing means and said spindle member in response to said eccentric rotation of said one of said housing means and said spindle member with respect to said other one of said housing means and said spindle member.

5. The damper as defined in claim 4, wherein:

said engagement means generates a resistive damping force which increases upon increasing speed between said spindle member and said housing means.

6. The damper as defined in claim 4 wherein said engagement means are formed as an O-ring.

7. The damper as defined in claim 6 wherein said O-ring is provided with a substantially circular cross-sectional configuration.

8. The damper as defined in claim 6 wherein said O-ring is mounted about the periphery of said spindle member.

9. The damper as defined in claim 4, including:

means for varying said damping force depending upon the angular position of said housing means with respect to said spindle member.

17. The damper as set forth in claim 4, further comprising:

detent means provided upon said housing means for indicating the relative position of said housing means with respect to said spindle member.

10. A fluid free damper, comprising:

a stationary spindle member;

housing means mounted for rotation with respect to said spindle member;

O-ring means mounted upon said housing means for rotation along with said housing means with respect to said spindle member; and

disc means positioned between said spindle member and said O-ring means for cooperating with said spindle member and said housing means for causing said O-ring means to generate a resistive damping force upon rotation of said housing means with respect to said spindle member.

11. The damper as defined in claim 10 wherein said disc means comprise a plurality of disc members positioned between said spindle member and said O-ring, each disc member providing an area of engagement with said O-ring for generating a resistive damping force to said damper upon rotation of said housing and said O-ring with respect to said spindle member.

12. The damper as defined in claim 11 wherein said resistive damping force varies with the number of discs utilized.

13. The damper as set forth in claim 11, wherein:

said spindle member comprises a plurality of recesses defined therein iron respectively housing said plurality of disc members.

14. The damper as set forth in claim 11, wherein:

said housing means comprises an annular recess defined therein for housing said O-ring means.

18. The damper as set forth in claim 13, wherein:

said plurality of disc members are rotatably disposed, respectively, within said plurality of recesses.

19. The damper as set forth in claim 13, wherein:

the number of said disc members disposed within said recesses is less than the number of recesses defined within said spindle member so as to selectively vary said resistive damping force generated upon said rotation of said housing means with respect to said spindle member.

20. The damper as set forth in claim 11, wherein:

said resistive damping force varies with the diametrical extents, respectively, of said plurality of disc members.