1. Field of Invention
This invention relates to a cartridge attachment and detachment apparatus provided at an air gun clip. Specifically, this invention relates to a high-pressure gas cartridge attachment and detachment apparatus for an air gun capable of attaching a high-pressure cartridge within a clip using a firing energy source of the air gun.
2. Description of the Background Art
In the related art, high-pressure gas used as a firing energy source of an air gun is mostly CO2, with a cartridge filled with CO2 being installed in an air gun for use. A cartridge is then mainly attached to and detached from a clip of an air gun.
That relating to an apparatus for the attachment and detachment of a high-pressure gas cartridge of an air gun of related art 1 and a description of installation of this cartridge is shown in
Next, a description is given according to
The installation screw 102 is provided with a projection 102b with a lower part exposed to the outside and passes through the bottom surface of the grip 101 due to a screw section 102a. The upper part is provided with a cartridge pressing section 105 positioned within the cartridge housing 103. The installation screw 102 is provided in a vertical direction of the grip 101 so as to move up and down with respect to the grip 101 as a result of rotation of the screw. Rotation of the installation screw 102 is such that rotation is caused by an operator pulling the projection 102b with their finger.
The cartridge pressing section 105 is a plate-shaped body positioned fixed to the upper end of the installation screw 102 at the bottom side of the gap of the cartridge housing 103. The center of the upper surface of the cartridge pressing section 105 has a shape corresponding to the bottom surface of the high-pressure gas cartridge A so as to form a sunken spherical shape.
The high-pressure gas cartridge A shown in
This procedure is then reversed in the event of extracting the cartridge A from the cartridge housing 103. Namely, the installation screw 102 is rotated in the opposite direction, the cartridge pressing section 105 is lowered, and the high-pressure gas cartridge A is extracted from the cartridge housing 103 so as to make a space.
However, in related art 1, a substantial amount of time is required to rotate the dial 102b of the installation screw 102 every time the high-pressure gas cartridge A is changed. The operation of changing the high-pressure gas cartridge A is extremely time-consuming and the operation itself is difficult. At the attachment and detachment apparatus for the high-pressure gas cartridge of the air gun of related art 1, the installation screw 102 is normal in a state projecting from the bottom surface of the grip 101. This makes handling difficult and is also unsuitable with regards to the external design of an air gun.
Next, that relating to an apparatus for the attachment and detachment of a high-pressure gas cartridge of an air gun of related art 2 and a description of installation of this cartridge is shown in
A clamp lever 202 is provided with a base pressing projection 202a, of a length substantially matching with the length of the bottom surface, provided at the bottom surface side of the grip 201 in such a manner as to press the adjustment base 203 in the vicinity of a lever rotation axis 204, with one end supported in a freely rotating manner at the lever rotation axis 204 constituting a rotation fulcrum. The base pressing projection 202a comes into contact with a recess 203a of the adjustment base 203.
The adjustment base 203 is provided at the bottom surface side of the grip so as to be long in a lengthwise direction of the bottom surface with one end supported in a freely rotating manner at an adjustment screw base rotation axis 205 positioned on the opposite side to the lever rotation axis 204 of the clamp lever 202. The adjustment base 203 is provided with a stroke adjustment screw 207 for adjusting the position of a cartridge pressing section 206 at the center, with the other end being urged in the direction of the bottom surface of the grip by the spring 208.
Next, a description is given of an operation for housing the high-pressure gas cartridge A in a cartridge housing 209 for an attachment and detachment apparatus for a high-pressure gas cartridge for an air gun of related art 2 based on
Next, in the event of extracting the high-pressure gas cartridge A in related art 1, the clamp lever 202 constituting a bottom surface panel is rotated taking the lever rotation axis 204 as a fulcrum so as to open up the bottom surface. In doing so, the adjustment base 203 is rotated in the direction of the bottom surface taking the adjustment screw rotation axis 205 as a fulcrum due to the urging force of the spring 208. Next, the stroke adjustment screw 207 is made to rotate so that the position of the cartridge pressing section 206 is lowered so as to come away from the bottom surface of the high-pressure gas cartridge A. The high-pressure gas cartridge A is then extracted from the cartridge housing 209.
Because the clamp lever 202 constitutes the bottom surface panel, the apparatus for attaching and detaching the high-pressure gas cartridge of the air gun of related art 2 is shorter than the length of the bottom surface of the grip. It is therefore not possible to make the lever operation force of the clamp lever 202 large. Because of this, a comparatively large force is required to open and close the clamp lever 202 and it is therefore difficult for an elderly person or female to carry out an operation for changing the high-pressure gas cartridge.
Further, there is also the problem that the distance (moveable range) moved in the vertical direction by the cartridge pressing section 206 is small due to the lever action of the clamp lever 202 not being large. In order to cover this kind of defect, in related art 2, the clamp lever 202 is provided with a member referred to as a separate adjustment base 203. The stroke adjustment screw 207 and the cartridge pressing section 206 are provided at the adjustment base 203. The distance of movement of the cartridge pressing section 206 due to rotation of the stroke adjustment screw 207 is adjusted upon the pushing up of the high-pressure gas cartridge A.
The attachment and detachment apparatus of the high-pressure gas cartridge of related art 2 has many members and is complex. In addition, the operation of changing the high-pressure gas cartridge A also requires an operation of rotating a stroke adjustment screw and this operation is also complex.
Further, it is also not possible for the length of the bottom surface of the grip to be longer than normal from a design point of view because of the functions of the air gun.
An apparatus for attaching and detaching a high-pressure gas cartridge of this invention is comprised of a cartridge housing provided in a clip of an air gun; a back grip panel for a grip formed as a clamp lever; a lever rotation axis provided in the vicinity of a bottom part of the grip and constituting a rotation fulcrum for a back grip panel; and a pressing curved surface capable of pressing a bottom part of the high-pressure gas cartridge.
A side grip panel of the grip is provided in an attachable and detachable manner so as to open and close the cartridge housing, the high-pressure gas cartridge may be attached and detached with the back grip panel of the grip rotated about the lever rotation fulcrum so as to be in an open state, and the back grip panel may press against the bottom of the high-pressure gas cartridge due to rotation centered about the lever rotation axis so as to be closed.
Further, in an attachment and detachment apparatus for a high-pressure gas cartridge of an air gun of a preferred embodiment of the invention, the attachment and detachment apparatus for the high-pressure gas cartridge of the air gun is such that the pressing curved surface capable of pressing the bottom of the high-pressure gas cartridge is comprised of a roller capable of rotation.
A description is now given of a high-pressure gas cartridge attachment and detachment apparatus of a first preferred embodiment of the invention.
An air gun G fires a pellet using jet pressure of a gas such as compressed air or compressed CO2 as a pressure source for a firing mechanism. High-pressure gas constituting this firing pressure source that in the main is CO2 high-pressure gas is housed under compression in the high-pressure gas cartridge A. This high-pressure gas cartridge A can be stored in an attachable and detachable manner in a cartridge housing 2 constituted by a space provided within a grip 1 of an air gun G.
A high-pressure gas cartridge installation apparatus of an air gun of this invention is comprised of the cartridge housing 2 provided in the grip 1 of the air gun G, a back grip panel 3 of the grip 1 formed as a clamp lever, a lever rotation axis 5 provided in the vicinity of the bottom surface 4 of the grip 1 constituting a fulcrum of rotation of the back grip panel 3, and a pressing curved surface 6 capable of pressing a bottom section A1 of the high-pressure gas cartridge A. In this embodiment, the pressing curved surface 6 is constituted by a rotatable roller 6.
The side grip panel 10 of the grip 1 is provided in an attachable and detachable manner so as to open and close the cartridge housing 2. The back grip panel 3 of the grip 1 is capable of attaching and detaching the high-pressure gas cartridge A in a state of being open as a result of being rotated about the lever rotation axis 5. The back grip panel 3 presses against the bottom section A1 of the high-pressure gas cartridge A due to the action of the back grip panel 3 rotating about the lever rotation axis 5 so as to close, and the high-pressure gas cartridge A is pressed up.
The main parts of an air gun G are shown in
The cartridge housing 2 has a hole 20 with the pressing curved surface 6 moving along the bottom surface coming into contact with the bottom surface of the high-pressure gas cartridge A. The length of the cartridge housing 2 is longer than the length of the high-pressure gas cartridge A.
Next, as shown in
Next, a description is given of the operation of a high-pressure gas cartridge attachment and detachment apparatus of an embodiment of the invention. When the cartridge housing 2 is in the empty state as shown in
In
Next, the high-pressure gas cartridge A is housed in the cartridge housing 2 as shown in
Next, the clamp lever 30 is rotated about the lever rotation axis 5 so as to become closed, as shown in
The clamp lever 30 is returned to the position of the back grip panel 3. When the clamp lever 30 is in a closed state, an upper end A2 of the high-pressure gas cartridge A is inserted into the pierce 9 so as to be opened as a result of the high-pressure gas cartridge A being pushed upwards within the clamped cartridge housing 2. As a result, high-pressure gas within the high-pressure gas cartridge A is supplied to a chamber 90 of the air gun G.
Further, the operation of extracting an empty high-pressure gas cartridge A from the cartridge housing 2 of the air gun G is the same as the housing operation. Finally, the side grip panel 10 is extracted, and the grip lever 30 of the back grip panel 3 is rotated about the lever rotation axis 5 so as to be opened. In doing so, the roller 6 constituting the pressing curved surface pushing up the high-pressure gas cartridge A within the cartridge housing 2 is extracted from within the cartridge housing 2. Because of this, the high-pressure gas cartridge A moves to the bottom surface side within the cartridge housing 2 due to its own weight or due to a manual operation by the user. The high-pressure gas cartridge A can be extracted from within the cartridge housing 2. In this state, the next high-pressure gas cartridge A filled with high-pressure gas is housed within the cartridge housing 2, and it is possible to soon use the air gun G by rotating the clamp lever 1 of the back grip panel 3 so as to cause closing.
According to the high-pressure gas cartridge attachment and detachment apparatus of an air gun of this invention, the clamp lever 30 is provided taking the back grip itself as the clamp lever. It is therefore possible to make the length of the clamp lever from the lever rotation axis 5 long compared to the related art. Because of this, the point of force of the operation becomes large even for the same force due to the rotation of the long lever, and rotation of the clamp lever 30 can be carried out in an extremely straightforward manner with a relatively small force compared to the related art.
According to a first embodiment of a high-pressure gas cartridge attachment and detachment apparatus for an air gun of this invention, the following results are obtained. This invention is capable of attachment and detachment of a high-pressure gas cartridge in a short period of time in an extremely straightforward manner with little force compared to high-pressure gas cartridge attachment and detachment apparatus of the related art.
Further, in this invention, the back grip panel 3 is formed from one piece in an L-shape with a substantial thickness. The total number of parts is therefore small compared with the related art and the structure and operation is straightforward. There are also very few negative influences with regards to the design of the grip.