Fixation methods and devices for a panel mounted device
A device is configured to be mounted to a planar mounting panel, including, for example, a wall or ceiling of a home or other building. The device includes a housing, a fastener, a dogleg tab and a friction inducing member. The housing is configured to be received in an aperture in the mounting panel and includes a housing aperture. The fastener is disposed in the housing aperture. The dogleg tab is operatively coupled to one end of the fastener. The dogleg tab is configured to be disposed in a retracted position and to be disposed in an engagement position, in which engagement position the dogleg tab is disposed to engage an inside surface of the mounting panel. The friction inducing member is fixedly attached to the housing adjacent the housing aperture and friction-fit to the fastener.
1. A device configured to be mounted to a planar mounting panel, the device comprising:
a housing configured to be received in an aperture in the mounting panel, the housing including a housing aperture and a recess;
a threaded fastener disposed in the housing aperture;
a dogleg tab; and
a friction inducing member fit to the fastener, wherein:
the friction inducing member includes a plurality of protrusions extending inwardly within the housing aperture;
the dogleg tab is configured to be disposed in a retracted position in which the dogleg tab is disposed within the recess, and to be disposed in an engagement position in which the dogleg tab is disposed to engage an inside surface of the mounting panel;
the friction inducing member is fit to the fastener with a force of friction greater than or equal to a first threshold force; and
the first threshold force is greater than a downward force of gravity acting on the dogleg tab.
2. The device of claim 1 , wherein the friction inducing member is fixedly attached to the dogleg tab.
3. The device of claim 1 , wherein the friction inducing member is fixedly attached to the housing adjacent the housing aperture.
4. The device of claim 3 , wherein the friction inducing member is fixedly attached to the housing with an adhesive.
5. The device of claim 3 , wherein the friction inducing member is disposed within the housing aperture.
6. The device of claim 5 , wherein the protrusions comprise fins that extend inwardly within the housing aperture.
7. The device of claim 6 , wherein the fins comprise generally straight fins.
8. The device of claim 6 , wherein the fins extend radially inwardly within the housing aperture.
9. The device of claim 6 , wherein the fins comprise non-straight fins.
10. The device of claim 1 , wherein the protrusions comprise ribs extending inwardly within the housing aperture.
11. The device of claim 10 , wherein each of the ribs has a speed-bump-like cross-sectional shape.
12. The device of claim 1 , wherein the protrusions comprise fins extending inwardly within the housing aperture.
13. The device of claim 12 , wherein the fins are configured to engage a head of the threaded fastener such that the head is friction fit to the fins.
14. The device of claim 12 , wherein the fins comprise four generally straight fins.
15. The device of claim 12 , wherein the fins extend inwardly within the housing aperture but not radially inwardly.
16. A method of making a device configured to be mounted to a planar mounting panel, the method comprising:
fitting a fastener located within a housing aperture of a housing configured to be received in an aperture in the mounting panel and a friction inducing member to one another, wherein fitting includes selecting the friction inducing member based on a force of friction the friction inducing member is configured to apply to the fastener, and wherein the force of friction is greater than or equal to a first threshold force; and
coupling a dogleg tab of a dogleg mechanism to one end of the fastener, the dogleg configured to be disposed in a retracted position in which the dogleg tab is disposed within a recess of the housing and to be disposed in an engagement position in which the dogleg tab is disposed to engage an inside surface of the mounting panel, wherein the first threshold force is greater than a downward force of gravity acting on the dogleg tab,
wherein the friction inducing member includes a plurality of protrusions extending inwardly within the housing aperture.
17. The method of claim 16 , wherein the method first comprises fixedly attaching the friction inducing member to the dogleg tab.
18. The method of claim 16 , wherein the method first comprises fixedly attaching the friction inducing member to the housing adjacent the housing aperture.
19. The method of claim 18 , wherein the protrusions comprise fins that extend inwardly within the housing aperture.
20. The method of claim 19 , wherein the fins comprise generally straight fins.