KR101562779B1 - Compact compound slingbow - Google Patents
Compact compound slingbow Download PDFInfo
- Publication number
- KR101562779B1 KR101562779B1 KR1020130153861A KR20130153861A KR101562779B1 KR 101562779 B1 KR101562779 B1 KR 101562779B1 KR 1020130153861 A KR1020130153861 A KR 1020130153861A KR 20130153861 A KR20130153861 A KR 20130153861A KR 101562779 B1 KR101562779 B1 KR 101562779B1
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- KR
- South Korea
- Prior art keywords
- pulley
- cam
- differential cam
- fixed
- elastic
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B5/00—Bows; Crossbows
- F41B5/10—Compound bows
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vibration Dampers (AREA)
Abstract
A compact compound sling bow is initiated. A compact compound sling bow according to the present invention includes: a bow main body having a curved portion formed on a front surface thereof and a vertical portion formed on one side of the curved portion; An upper pulley and a lower pulley rotatably coupled to the upper and lower portions of the curved portion; A guide pulley rotatably coupled to an upper portion of one side of the curved portion so as to be disposed at a lower portion of the upper pulley; A differential cam rotatably coupled to a lower portion of the vertical portion; A ramp whose one end is fixed to the large-leaf sheave of the differential cam and whose other end is fixed to the large-leaf sheave of the differential cam via the guide pulley, the upper pulley and the lower pulley; An elastic connecting rod having one end fixed to the lobe cam of the differential cam and the other end connected to the elastic body; And an elastic body having one end fixed to the vertical part and the other end fixed to the elastic connection line to provide a constant elastic force.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact compound sling bow, and more particularly, to a small-sized compact compound sling bow having an elastic body such as a rubber band or a spring as an energy storage medium and a single differential cam.
Generally, compound sling bow uses rubber band as energy storage medium and accumulates energy efficiently by using cam, so the arrow speed is fast when the arrow is fired.
The cam used in Compound Sling Bow has evolved from the Compound Bow. It is common to use two limbs as an energy storage medium in a compound bow, but in a compound slingsbow, only one elastic body such as a rubber band or a spring may be used.
Therefore, the cam used in compound sling bow is developing accordingly.
For example, referring to the video of the Internet site, the following description will be given.
1) http://www.youtube.com/watch?v=pODCYp8C-0Q: Energy storage is a spring so you can fire very light projectiles such as dry fire and iron balls at very high speed, It is also possible to launch, and the overall size is so small that it is easy to carry. Using only a single spring eliminates the need for additional devices for synchronization. However, it is a problem to use a deformed large cam to reduce the overall size.
2) http://shoottech.com/technology: Because energy storage is elastic, it is possible to fire very light projectile such as dry fire and iron ball at very high speed as well as arrow shooting.
In other words, seeing http://www.youtube.com/watch?v=vtp8NIEJAu8, the compound sling bow is firing iron beads without damage.
However, since the upper and lower ribs are symmetrical, the upper and lower rubber strips must be stretched in the same amount. Therefore, there is a problem that a synchronizing device (Bus-Cable) must be installed and a large size inconvenient to carry.
3) http://www.libertyarchery.com/index.html: Known as the smallest compound spring available in mass production, the overall size is very small and light, making it easy to carry.
However, the upper and lower sides are symmetrical, and a synchronization cable (bus cable) must be installed, and a deformed cam is a problem to reduce the overall size. In addition, since it is a compound bow using a rope, there is a disadvantage that a compound bow is broken when dry fire or a marbling is performed.
4) Korean Registered Patent No. 10-1253209 (Registered on Apr. 04, 2013): Small cam is used, rubber band is used as energy storage means, and was filed by the present applicant as a small compound sling bow which is easy to carry.
This includes an intrinsic riser RP, an outer riser RO whose one end is coupled to the outer end of the intrinsic riser RP, differential cams CL and CS disposed in the middle of the outer riser RO, (R) connected to the differential cam by an end portion of the cable (C) and an end portion of the idler pulley (P) And the other end includes an auxiliary riser (RS) coupled to the outer riser (RO).
According to this configuration, when the slip S is pulled to fire the arrow, the energy is stored in the differential cams CL and CS which are rotated in the pulling direction of the slip S with respect to the outer riser RO, You can.
However, the conventional compound sling bow has the advantage of increasing the accuracy of the arrow by reducing the phase shift of the idler pulley in the idler pulley when the arrow is fired. However, in the conventional compound sling bow, two upper and lower cams are used There is a problem in the synchronization of the cam in actual use, and a device such as a bus cable for a separate synchronization is required. In addition, since there are two differential cams, there is a problem in that efficiency is lowered when the stored energy is used due to the weight of the differential cams.
Therefore, the energy storage medium is used only as an elastic body such as a rubber band or a spring, and since only one differential cam is used, the lengths of the upper and lower pulleys lead to the same lengths, Research on the development of compound sling bow which can be used without the need of cable has been demanded.
The technical object of the present invention is to provide a compact compound sling bow capable of realizing a small and light arrow shooting device while using the advantages of an eccentric cam capable of storing a lot of energy like an existing compound bow and emitting arrows .
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. There will be.
According to an aspect of the present invention, there is provided a bow main body having a curved portion formed on the front surface and a vertical portion formed on one side of the curved portion, An upper pulley and a lower pulley rotatably coupled to the upper and lower portions of the curved portion; A guide pulley rotatably coupled to an upper portion of one side of the curved portion so as to be disposed at a lower portion of the upper pulley; A differential cam rotatably coupled to a lower portion of the vertical portion; A ramp whose one end is fixed to the large-leaf sheave of the differential cam and whose other end is fixed to the large-leaf sheave of the differential cam via the guide pulley, the upper pulley and the lower pulley; An elastic connecting rod having one end fixed to the lobe cam of the differential cam and the other end connected to the elastic body; And an elastic body having one end fixed to the vertical part and the other end fixed to the elastic connection line to provide a constant elastic force.
Wherein the differential cam comprises: a bobbin sheave rotatably coupled to the vertical portion and adapted to wind the bobbin; And a lobed cam which is formed on one side of the large leaf sheath so that the elastic connection line is wound.
And the differential cam is coupled to the vertical portion so as to be disposed in a direction parallel to the slip passing through the upper pulley and the lower pulley.
The guide pulley is characterized by guiding the straight line to be held when the slope is pulled in the direction toward the upper pulley.
And the elastic connection rib is fixed to a portion where the diameter of the lid cam is the largest at one end so as to transmit energy to the differential cam.
The elastic body is characterized by being formed of rubber strands or springs.
According to the present invention, by providing a compact compound sling bow having a single differential cam composed of a single leaf sheave and a single leaf cam, the differential cam is lighter than the conventional compound sling bow, can do.
1 is a schematic view of a side view of a compact compound sling bow according to the present invention before drawing a stripe.
FIG. 2 is a schematic view of the compact compound sling bow shown in FIG. 1, as viewed from the rear, prior to drawing a stripe. FIG.
Fig. 3 is an enlarged view of the differential cam of the compact compound sling bow shown in Fig. 1 before drawing the strike line as seen from the side of the large-leaf sheave.
Fig. 4 is an enlarged view of the differential cam of the compact compound sling bow shown in Fig. 3 as viewed from the side. Fig.
5 is a schematic view of a side view of a compact compound sling bow according to the present invention when fully drawn.
FIG. 6 is a schematic view of the compact compound sling bow shown in FIG. 5, viewed from the rear after full drawing. FIG.
Fig. 7 is an enlarged view of the differential cam of the compact compound sling bow shown in Fig. 5 viewed from the side of the large leaf sheave.
Fig. 8 is an enlarged view of the differential cam after full drawing of the compact compound sling bow shown in Fig. 7 as viewed from the side. Fig.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions will not be described in order to simplify the gist of the present invention.
1 is a schematic view of a side view of a compact compound sling bow according to the present invention before drawing a stem, and Fig. 2 is a schematic view of a compact compound sling bow before drawing a stem of the compact compound sling bow shown in Fig. Fig. 3 is an enlarged view of the differential compound sling bow of the compact compound sling bow shown in Fig. 1 before drawing the stripe, as viewed from the side of the large leaf sheave, and Fig. 4 is an enlarged view FIG. 5 is a schematic view of a side view of a compact compound sling bow according to the present invention when it is full drawn, and FIG. 6 is a cross- FIG. 7 is a schematic view of the compact compound sling bow shown in FIG. 5 after full drawing of the compact compound sling bow shown in FIG. 5, And the enlarged view of the fact that the differential cam compound bow sling daeyeop side pulley, Figure 8 is a close-up view showing a differential cam after the full drawing (full drawing) of the compact sling compound bow shown in Fig side side.
1 to 4, a compact compound sling bow according to the present invention includes a
Here, one end of the
The bow
The
That is, the
The
The
Wherein the
In addition, although the
A lobe cam (44) is provided at one side of the large-leaf sheave (42) so as to wind the elastic connecting rods (60). At this time, the
The
The
The
At this time, since the
The angle of the inclined line formed by the
These
Here, the
One end of the
One end of the
Here, the force for pulling the
In the present embodiment, the
Hereinafter, the operation of the compound sling bow according to an embodiment of the present invention will be described with reference to FIGS. 5 to 8. FIG.
5 to 8, when the
At this time, the elastic connecting
When the
The
As described above, the compound slingsbow of the present embodiment includes the large-
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, such modifications or variations should not be individually understood from the technical spirit and viewpoint of the present invention, and modified embodiments should be included in the claims of the present invention.
10: Bow main body 12:
14: vertical portion 20: upper pulley
22: lower pulley 30: guide pulley
40: Differential cam 42:
44:
60: Elastic body connecting line 62: Elastic body
Claims (6)
An upper pulley and a lower pulley rotatably coupled to the upper and lower portions of the curved portion;
A guide pulley rotatably coupled to an upper portion of one side of the curved portion so as to be disposed at a lower portion of the upper pulley;
A differential cam rotatably coupled to a lower portion of the vertical portion;
A ramp whose one end is fixed to the large-leaf sheave of the differential cam and whose other end is fixed to the large-leaf sheave of the differential cam via the guide pulley, the upper pulley and the lower pulley;
An elastic connecting rod having one end fixed to the lobe cam of the differential cam and the other end connected to the elastic body; And
And an elastic body having one end fixed to the vertical portion and the other end fixed to the elastic connection line to provide a predetermined elastic force,
Wherein the guide pulley is guided to remain vertical in the section of the guide pulley and the upper pulley when the ramp is pulled in the direction toward the upper pulley.
The differential cam
A large-diameter sheave rotatably coupled to the vertical portion and adapted to wind the elevation; And
And a lobed cam formed on one side of the bibulous sheath so that the elastic connection line is wound.
Wherein the differential cam is coupled to the vertical portion such that the differential cam is disposed parallel to the ramp past the upper pulley and the lower pulley.
The elastic connection string may include:
And one end thereof is fixed to a portion having the largest diameter of the lobed cam so as to transmit energy to the differential cam.
Wherein the elastic body is formed of a rubber band or a spring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020130153861A KR101562779B1 (en) | 2013-12-11 | 2013-12-11 | Compact compound slingbow |
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KR1020130153861A KR101562779B1 (en) | 2013-12-11 | 2013-12-11 | Compact compound slingbow |
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KR20150068082A KR20150068082A (en) | 2015-06-19 |
KR101562779B1 true KR101562779B1 (en) | 2015-10-28 |
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KR1020130153861A KR101562779B1 (en) | 2013-12-11 | 2013-12-11 | Compact compound slingbow |
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KR (1) | KR101562779B1 (en) |
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