Patent Application
20130092018
The invention relates to a recoil-spring device for a handgun comprising a breech device, which recoil-spring device comprises a recoil spring which is in the form of a spiral spring and the rear end of which abuts a rear stop member on a recoil-spring rod and the front end of which is mounted for movement along the recoil-spring rod with contraction of the recoil spring.
Recoil-spring devices of the above type are used in the prior art to install a recoil spring in the biased state in a handgun. A recoil spring is compressed when the breech device recoils after a shot has been fired, the direction of recoil being opposite to the direction of motion of the projectile, and as a result it converts the kinetic energy of the breech device into potential spring energy that causes the breech device to move forward, after it has hit the grip of the handgun, to its starting position for firing.
However, the prior recoil-spring devices suffer from the disadvantage that a recoil-spring eyelet provided in the region of a front surface of the breech device for mounting a front end face of the recoil-spring device is complicated and therefore expensive to produce.
It is therefore an object of the invention to provide a recoil-spring device that forms a compact unit and that can be readily inserted by hand into a weapon and removed therefrom and can be installed in a handgun without any elaborately designed recoil-spring eyelet.
For a recoil-spring device of the above type, this object is achieved, according to the invention, in that the front end of the recoil spring abuts, at least indirectly, a rear contact surface of a contact element of a recoil-spring slide that is mounted for movement along the recoil-spring rod, while a front contact surface of the contact element is in contact with an internal surface of the breech device of the handgun.
Preferred embodiments of the invention are the subject matter of the subordinate claims.
In the recoil-spring device of the invention, the combination of features to the effect that the front end of the recoil spring abuts, at least indirectly, a rear contact surface of a contact element of a recoil-spring slide that is mounted for movement along the recoil-spring rod, and to the effect that a front contact surface of the contact element that is in contact with an internal surface of the breech device of the handgun provides design flexibility for the front region of the recoil-spring rod that abuts the front contact surface of the contact element and renders the same capable of being shaped such that it can be inserted, when provided with a simple geometric shape, into a recoil-spring eyelet that is likewise simple in design.
Typically, a front region of the recoil-spring rod is cylindrical in shape and is insertable into a cylindrical bore in the region of the front surface of the breech device.
According to a first preferred embodiment of the recoil-spring device of the invention, the contact element is provided in the form of a contact ring disposed between a spring-guiding member of the recoil-spring slide, said member being disposed near the recoil spring, and a component of the recoil-spring slide which is disposed on the breech side.
According to another preferred embodiment of the recoil-spring device of the invention, provision is made for the spring-guiding member of the recoil-spring slide to be insertable into a gap between the recoil-spring rod and the recoil spring.
Preferably, the component of the recoil-spring slide disposed on the breech side comprises a front end face that can be brought into contact with a rear locating surface of a front stop member on the recoil-spring rod.
According to an important preferred embodiment of the recoil-spring device of the invention, provision is made for the recoil-spring slide to comprise, in the region of its surface in contact with the recoil-spring rod, a plurality of guiding elements that engage with guideways in the region of the surface of the recoil-spring rod.
According to a further important preferred embodiment of the recoil-spring device of the invention, provision is made for the recoil-spring slide to comprise two subcomponents that can be assembled to form a functional unit on the recoil-spring rod.
Preferably, there are provided four guideways in the region of the surface of the recoil-spring rod, and each of the two subcomponents comprises two guiding elements, each of which is mounted in a guideway on the recoil-spring rod.
According to another important preferred embodiment of the recoil-spring device of the invention, provision is made for the component of the recoil-spring slide disposed on the breech side to protrude beyond the front stop member of the recoil-spring rod in order to form a protrusion to engage with a recess provided in the front surface of the breech device.
Preferably, the recoil spring mounted on the recoil-spring rod forms, in cooperation with the recoil-spring slide mounted for movement along the recoil-spring rod, a functional unit which can be inserted positively and effortlessly into a corresponding bearing of a handgun.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.
The recoil-spring device of the invention is explained below with reference to a preferred embodiment illustrated in the figures of the drawing, in which:
Like reference numbers and designations in the various drawings indicate like elements.
The recoil-spring device 100 of the invention, which is intended for use in a handgun and is shown in
The front end of the recoil spring 110 abuts a rear contact surface 132 of a contact element 131 of a recoil-spring slide 130 that is mounted for movement along the recoil-spring rod 120, and a front contact surface 133 of the contact element 131 is in contact with an internal surface of the breech device of the handgun. The contact element 131 is in the form of a contact ring disposed between a spring-guiding member 134 of the recoil-spring slide 130, said member being disposed near the recoil spring (110), and a component 135 of the recoil-spring slide 130 which is disposed on the breech side.
The spring-guiding member 134 of the recoil-spring slide 130 is configured so as to be insertable into a gap 140 between the recoil-spring rod 120 and the recoil spring 110. The component 135 of the recoil-spring slide 130 disposed on the breech side comprises a front end face 136 that can be brought into contact with a rear locating surface 124 of a front stop member 121 of the recoil-spring rod 120.
The recoil-spring slide 130 comprises, in the region of its surface in contact with the recoil-spring rod 120, a plurality of guide elements 137 that engage with matching guideways 122 disposed in the region of the surface of the recoil-spring rod 120. The recoil-spring slide 130 is composed of two subcomponents that form a functional unit on the recoil-spring rod 120. In the region of the surface of the recoil-spring rod 120 there are provided four guideways 122, and each of the two subcomponents comprises two guiding elements 137, each of which is mounted in a guideway 122 on the recoil-spring rod 120.
The component 135 of the recoil-spring slide 130 disposed on the breech side protrudes beyond the front stop member 121 of the recoil-spring rod 120 in order to form a protrusion to engage with a recess provided in the front surface of the breech device.
The recoil spring 110 mounted on the recoil-spring rod 120 forms a functional unit in cooperation with the recoil-spring slide 130 mounted for movement along the recoil-spring rod 120, which functional unit can be inserted positively and effortlessly into a corresponding bearing of a handgun.
The exemplary embodiment of the invention described above merely serves the purpose of providing better comprehension of the teaching of the invention defined in the claims, which teaching is not, as such, restricted to the exemplary embodiment.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2011 115 771.2 | Oct 2011 | DE | national |
