Patent Application
20070069526
The present invention relates to a door catch, and more particularly to a door catch that includes two elastic check members to enable easier assembling and mounting as well as reduced manufacturing cost of the door catch.
In a conventional door catch as shown in
A primary object of the present invention is to provide an improved door catch that omits the troublesome screws to enable easier assembling and mounting of the door catch.
Another object of the present invention is to provide an improved door catch that may be made of a plastic material instead of a metal material to thereby reduce the manufacturing cost of the door catch.
To achieve the above and other objects, the door catch of the present invention includes a back plate having two laterally symmetric sleeves formed on a front face thereof. An elastic check member is conveniently mounted in a rear end of each sleeve to replace a conventional screw to confine a steel ball and a spring in the sleeve, so that the spring normally pushes the steel ball forward to partially project from a front open end of the sleeve and the elastic check member backward to firmly close the rear end of the sleeve without the risk of moving out of the sleeve.
To use the door catch of the present invention, the back plate is fixedly mounted on a wall corresponding to a stop post mounted on a movable door leaf, so that the steel balls projected from the two sleeves of the back plate together firmly clamp the stop post between them when the door leaf is turned toward the wall.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
Please refer to
According to a preferred embodiment of the present invention, the elastic check member 5 is substantially a concaved circular member with a plurality of radially extended slits 51 spaced along an outer periphery thereof, so that the elastic check member 5 may work like a pawl and could be more easily assembled to the sleeve 11 and held in place without the risk of moving backward to separate from the sleeve 11. It is understood any other deformable member that provides the same checking and fixing function as the elastic check member 5 should be included in the technical scope of the present invention.
In the preferred embodiment of the present invention, each of the sleeves 11 is provided in the rear end with a stop section 21, which is axially compressed when the elastic check member 5 is backward pushed by the spring 3 to press against the stop section 21. The compressed stop section 21 forms a stopper to ensure that the elastic check member 5 is held in place in the rear end of the sleeve 11 without the risk of backward moving out of the sleeve 11.
To use the door catch of the present invention, simply fixedly mount the back plate 1 and a corresponding stop post 6 on a wall 10 and behind a movable door leaf 20, respectively, at two corresponding positions. When the door leaf 20 is turned toward the wall 10, the stop post 6 is tightly clamped by and between the two steel balls 2 that are elastically pushed by the springs 3 to partially project from the front open ends of the two sleeves 11.
Therefore, the door catch of the present invention is easy to assemble and mount without using the easily loosened or separated screws. Moreover, the backplate 1 and the sleeves 11 integrally formed on the back plate 1 of the door catch of the present invention may be made of a material other than metal, such as a plastic material, to reduce the manufacturing cost thereof.
In brief, since the elastic check member 5 may be easily mounted and held in place in the sleeve 11 to prevent the steel ball 2 and the spring 3 from moving out of the sleeve 11, the door catch of the present invention is more convenient for use.
