Linkage dual mode release
The linkage dual mode release includes a main body, a string hook, a linkage lock, a thumb trigger, a sear, and a trigger bar flange. The main body has a first finger groove arm. The string hook is elastically pivoted to one end of the main body for releasably hook to a bow string. The linkage lock is elastically pivoted to an outer surface of the main body, and the linkage lock is located adjacent the other end of the main body opposite to the string hook. The linkage lock has a locking arm and a lever arm extending to the main body. The thumb trigger is mounted to the linkage lock extending away from the main body. The sear is pivoted to the main body, a rest member is located between the sear and the main body, the sear comprises a second finger groove arm.
1. A linkage dual mode release, comprising:
a main body having a first finger groove arm;
a string hook, elastically pivoted to one end of the main body for releasably hook to a bow string;
a linkage lock, elastically pivoted to an outer surface of the main body, and the linkage lock located adjacent the other end of the main body away from the string hook, the linkage lock having a locking arm and a lever arm extending to the main body;
a thumb trigger, mounted to the linkage lock and extending away from the main body;
a sear, pivoted to the main body, and located between the string hook and the linkage lock, a rest member located between the sear and the main body, the sear comprising a second finger groove arm, a first end of the second finger groove arm locking the string hook; and
a trigger bar flange, protruding from the sear, and extending to the linkage lock and being locked by the locking arm;
wherein when the thumb trigger is pulled by a thumb of the user, the thumb trigger the linkage lock to rotate, causing the trigger bar flange to be unlocked from the locking arm; and when the linkage lock continues to rotate, the lever arm exerts pressure on the sear to cause the sear to rotate, simultaneously, and the lever arm exerts pressure on the sear to cause the first finger groove arm to rotate, in turn unlocking the string hook from the sear;
wherein the linkage lock is pivoted to the main body via a second pivot shaft, and a second reset member is sleeved on the second pivot shaft and located between the linkage lock and the main body;
wherein the outer surface of the main body defines a channel, which is formed by two facing ridges of the main body, a part of the linkage lock extends into the channel and the second pivot shaft is inserted into the ridges and the linkage lock to enable the second pivot shaft to pivotively mounted to the main body;
wherein the locking arm and the lever arm extend into the channel and resists against the main body; and
wherein the first finger groove arm defines a first finger groove, a first knob and a second knob protrudes from the main body at an interval and opposite the first finger groove, the first knob and the second knob are configured to mounted the sear and the linkage lock respectively.
2. The linkage dual mode release of claim 1 , wherein the string hook is pivoted to the main body via a first pivot shaft, and a first reset member is sleeved on the first pivot shaft and located between the string hook and the main body.
3. The linkage dual mode release of claim 1 , wherein the sear further comprising a second end of the second finger groove arm, the first end of the second finger groove arm and the trigger bar flange placed into the channel, and the second end of the second finger groove arm extends opposite from the main body.
4. The linkage dual mode release of claim 3 , further comprising a third finger groove arm pivoted to the second end of the second finger groove arm.
5. The linkage dual mode release of claim 4 , wherein the third finger groove arm defines two finger grooves.
6. The linkage dual mode release of claim 1 , wherein an angle adjustment member is installed between the linkage lock and the thumb trigger, one end of the angel adjustment member is fixed on the linkage lock, and the thumb trigger is mounted on other end of the angle adjustment member.
7. The linkage dual mode release of claim 6 , wherein a distance adjustment member is connected between the angle adjustment number and the thumb trigger, the distance adjustment member is moved with respectively to the angle adjustment number, and moved to or away from the linkage lock.
8. The linkage dual mode release of claim 7 , wherein the distance adjustment member and the angle adjustment member respectively defines a first slidable slot and a second slidable slot, the angle adjustment member overlap at the distance adjustment member, and a fixing member is passed through the first slidable slot and the second slidable slot to assemble the angle adjustment member and the distance adjustment member together.
9. The linkage dual mode release of claim 8 , wherein the angle adjustment member further comprises a limit block, the limit block is passed through the first slidable slot and the second slidable slot.
10. The linkage dual mode release of claim 8 , wherein the first slidable slot and the second slidable slot are arc-shaped, and the fixing member is adjusted a position with respectively to the angle adjustment member and the distance adjustment member to adjust a distance between the linkage lock and the thumb trigger.
11. The linkage dual mode release of claim 8 , wherein an end of the distance adjustment member adjacent to the thumb trigger provided with a receiving portion defining a spherical space, a ball bear is embed an end of the thumb trigger, the ball bear and receiving portion are fixed together via a bolt.
12. The linkage dual mode release of claim 11 , wherein the receiving portion and the boll bear are respectively define screw holes, the bolt is engaged with the ball bear and the receiving portion via the screw holes.
13. The linkage dual mode release of claim 4 , wherein first conical tooth surfaces are place at ends of the third finger groove arm and the sear assembled with each other, the first conical tooth surfaces are engaged with each other that the third finger groove arm and the sear are fixed relatively.
14. The linkage dual mode release of claim 8 , wherein second conical tooth surfaces are placed at ends of the angle adjustment member and the linkage lock assembled with each other, the second conical tooth surfaces engaged with each other that the angle adjustment member and the linkage lock are fixed relatively.