Patent Application
20180259288
The present invention relates to a crossbow, and more particularly to a trigger labor-saving structure of the crossbow.
A conventional crossbow contains a body and a limb, wherein the body has a crossbow stock formed on a rear end thereof, a trigger arranged on a front end of the crossbow stock, a connection mount connected on the trigger, and a sight telescope fixed on the connection mount. The limb is in an arc shape and is mounted adjacent to a front end of the body. The limb intersects with the body so that the body and the limb are formed in a cross shape. In operation, a bowstring is pulled backward so as to hook on the trigger, an arrow is placed on the body so as to correspond to the bowstring, and a target is aimed by using the sight telescope. Thereafter, the trigger is pressed so that the bowstring removes from the trigger, and the arrow is pushed to shoot outwardly.
A conventional trigger assembly contains a trigger and a string hook member, the trigger has a stop face defined on an end thereof, and the string hook member has an engagement face formed on an end thereof and corresponding to the stop face. When the bowstring is pulled rearward to be hook by the string hook member, the engagement face of the string hook member is stopped by the stop face of the trigger. While pulling the trigger, the stop face of the trigger removes from the engagement face of the string hook member so that the bowstring removes from the string hook member, and an arrow is pushed by the bowstring to shoot outwardly.
However, the stop face of the trigger and the engagement face of the string hook member are plane so as to produce friction resistance between the stop face and the engagement face greatly, thus pulling the trigger troublesomely as triggering the trigger.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a trigger labor-saving structure of a crossbow in which at least one concave portion is formed on a stop face of a trigger, and the at least one concave portion is defined between a first periphery and a second periphery of the stop face, such that frictional resistance between the stop face and an engagement face reduces without influencing structural strength of the trigger, so as to save operation labor of the trigger, when triggering the crossbow.
To obtain above-mentioned objective, a trigger labor-saving structure of a crossbow provided by the present invention, the crossbow contains: a body, a limb, and a trigger assembly.
The limb is in an arc shape and is mounted adjacent to a front end of the body, and the limb intersects with the body and includes a bowstring fixed on two ends of the limb, wherein the trigger assembly includes:
a trigger seat arranged on the body of the crossbow;
a trigger partially accommodated in the trigger seat and downward extending out of the trigger seat so as to control triggering of the crossbow, the trigger having a stop face defined on an end of the trigger inside the trigger seat, and the stop face having a first periphery and a second periphery opposite to the first periphery;
a string hook member housed in the trigger seat so as to hook the bowstring of the crossbow after the bowstring being pulled rearward, and the string hook member including an engagement face formed on an end of the string hook member corresponding to the stop face of the trigger; and
at least one concave portion being formed on the stop face of the trigger and defined between the first periphery and the second periphery of the stop face, such that frictional resistance between the stop face and the engagement face reduces without influencing structural strength of the trigger.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
With reference to
The trigger seat 10 is arranged on the body A11 of the crossbow A1.
The trigger 20 is partially accommodated in the trigger seat 10 and downward extending out of the trigger seat 10 so as to control triggering of the crossbow A1. The trigger 20 has a stop face 21 defined on an end thereof inside the trigger seat 10, and the stop face 21 has a first periphery 211 and a second periphery 212 opposite to the first periphery 211.
The string hook member 30 is housed in the trigger seat 10 so as to hook the bowstring A14 of the crossbow A1 after the bowstring A14 being pulled rearward. The string hook member 30 includes an engagement face 31 formed on an end thereof corresponding to the stop face 21 of the trigger 20.
In this embodiment, a concave portion 40 is arcuate and is formed on the stop face 21 of the trigger 20, and the concave portion 40 is defined between the first periphery 211 and the second periphery 212 of the stop face 21.
As shown in
Referring to
Thereby, the trigger labor-saving structure of the present invention has advantages as follows:
the at least one concave portion 40 is formed on the stop face 21 of the trigger 20, and the concave portion 40 is defined between the first periphery 211 and the second periphery 212 of the stop face 21, such that frictional resistance between the stop face 21 and the engagement face 31 reduces without influencing structural strength of the trigger 20, so as to save operation labor of the trigger 20, when triggering the crossbow.
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 106203346 | Mar 2017 | TW | national |
