CN111102880A - String pulling device of bow - Google Patents

Abstract

A bowden string device comprising: a bow body, a bow arm with a bow string, a handle, an arrow taking device, a string safety device, a trigger and a string pulling device; this string pulling device includes: the sliding chutes are respectively arranged on the left side and the right side of the bow body; a string button respectively arranged in each sliding chute; and a pull handle connecting rod group connected with the two string fasteners and the bow body and used for driving the two string fasteners to synchronously reciprocate along the sliding chute; the string buckle moves towards the front end of the sliding chute to hook the bowstring, the string buckle moves towards the rear end of the sliding chute to stretch the bowstring, and finally the string buckle sleeves the bowstring hook in a tensioning state on a string blocking piece of the string stretching safety device.

Description

String pulling device of bow

Technical Field

The present invention relates to the field of archery sports equipment, and more particularly, to a string-pulling device for a bow.

Background

The basic structure of the cross bow or the folding bow generally comprises a bow body, a bow arm and a bow string combined between two ends of the bow arm; a handle is arranged below the rear end of the bow body for being held by an archer, an arrow groove is formed in the top of the bow body for placing an arrow, a string pulling fixer is arranged at the position, corresponding to the arrow groove, of the rear end of the bow body, and a bow string on the bow arm can be stretched to the string pulling fixer to be in a tensioned state; the trigger is arranged at the position close to the grip under the bow body and can control the string pulling fixer to release bowstrings.

Before shooting the arrow, the bowstring between the two ends of the bow arm is stretched to the string-pulling fixer, the arrow 50 is placed in the arrow groove, the arrow tail is abutted against the bowstring on the string-pulling fixer, the trigger is pressed, the string-pulling fixer releases the bowstring, and the arrow is shot out by means of the resilience force of the bowstring.

The action of stretching the bowstring is to hold the handle with one hand and pull the bowstring backwards with the finger of the other hand, based on the elasticity and tension of the bowstring, the closer the bowstring is to the bowstring fixer, the greater the force for stretching the bowstring, if the stretching force of the archer is insufficient or the bowstring rebounds due to slipping, the damage to the bowarm or bow body can be caused, even the damage to the arm or finger of the archer.

To solve the above problems, taiwan patent TWI591314 proposes a safe and labor-saving string pulling device, the bow generally includes a bow body, an action set and a stretching set, wherein: the bow body is provided with a front end and a rear end, a chute is arranged between the front end and the rear end, a bow arm is combined close to the front end of the bow body, and a bow string is arranged between the two ends of the bow arm; the action group comprises a sliding seat, a limiting piece, a safety piece, a string hooking piece and a trigger, wherein the limiting piece, the safety piece, the string hooking piece and the trigger 28 are assembled on the sliding seat which is arranged in the sliding groove in a sliding way; the stretching set comprises a pull rod, a pin joint rod and a linkage rod, and the stretching swing of the stretching set drives the action set to slide and displace in the bow chute, so that when the string hooking piece hooks the bow string, the effect of labor-saving string pulling can be achieved through the application of the lever principle.

Disclosure of Invention

The main technical problem to be solved by the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide a string-pulling device for a bow, by which a archer can pull the bow string backwards in a labor-saving manner.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a bowden string device comprising: a bow body, a bow arm with a bow string, a handle, an arrow taking device, a string safety device, a trigger and a string pulling device; the bow body is provided with a front end and a rear end along the archery direction, the handle is combined below the rear end of the bow body, the arrow taking device is fixed on the top surface of the bow body, the top surface of the arrow taking device is provided with an arrow groove for a bow to take and slide, the bow arm is combined with the bow body and is positioned in front of the arrow taking device, the string pulling safety device is combined and fixed with the bow body and is positioned behind the arrow taking device, and the trigger is arranged on the bow body, is close to the handle and is positioned below the string pulling safety device; the string-stretching safety device comprises a string-blocking piece which can pivot and swing and can elastically move up and down; the trigger is connected with and controls the string blocking piece to move downwards;

this string pulling device includes:

the sliding chutes are respectively arranged on the left side and the right side of the bow body; the sliding groove is a hook end towards the front end of the bow body, and is a release end towards the rear end of the bow body; the releasing end is a turning sinking section;

a string button respectively arranged in each sliding chute; the string buckle comprises a buckling opening and a bow string guiding part; the bow-string guiding part faces to the bow string on the bow arm, and the buckling port is positioned at one side of the string buckle, which is different from the bow-string guiding part; the bow string guiding part is connected with the buckling port, and the string buckle is arranged in the sliding chute in a sliding way by at least one sliding piece; and

a pull handle connecting rod group connected with the two string fasteners and the bow body and used for driving the two string fasteners to synchronously reciprocate along the sliding chute; the pull handle connecting rod group enables the string buckle to enter the buckling port through the string hooking guide part at the string hooking end, hooks the string, enables the string buckle to move from the hooking end to the releasing end to stretch the string towards the rear end of the bow body, enables the string buckle to sink and move at the releasing end to separate from the string, and enables the string in a tensioning state to be hooked and sleeved on the string blocking piece.

In a preferred embodiment, the pull handle linkage comprises: two string buckle connecting rods, a first pull handle connecting rod, a second pull handle connecting rod and a pull handle; the first ends of the two string fasteners are respectively connected with the two string fasteners through a rotating pivot, the second ends of the two string fasteners are rotatably pivoted with the first end of the first pull handle connecting rod through a penetrating shaft, the second end of the first pull handle connecting rod is connected with the first end of the second pull handle connecting rod through a rotating pivot, and the second end of the second pull handle connecting rod is connected with the front end of the bow body through a rotating pivot; the second end of the pull handle is connected with the front end of the bow body by a rotating pivot, the first end of the pull handle is provided with a buckle which can be clamped or separated from a buckle bolt arranged below the handle; the pull handle is arranged in a long hole of the second pull handle connecting rod in a penetrating way by a rotating pivot.

In a preferred embodiment, the bowstring guide portion is a circular arc surface.

A bowden string device comprising: a bow body, a bow arm with a bow string, a handle, an arrow taking device, a string safety device, a trigger and a string pulling device; the bow body is provided with a front end and a rear end along the archery direction, the handle is combined below the rear end of the bow body, the arrow taking device is fixed on the top surface of the bow body, the top surface of the arrow taking device is provided with an arrow groove for a bow to take and slide, the bow arm is combined with the bow body and is positioned in front of the arrow taking device, the string pulling safety device is combined and fixed with the bow body and is positioned behind the arrow taking device, and the trigger is arranged on the bow body, is close to the handle and is positioned below the string pulling safety device; the string-stretching safety device comprises a string-blocking piece which can pivot and swing and can elastically move up and down; the trigger is connected with and controls the string blocking piece to move downwards;

this string pulling device includes:

the sliding chutes are respectively arranged on the left side and the right side of the bow body; the sliding groove is a hook end towards the front end of the bow body, and is a release end towards the rear end of the bow body;

a string button respectively arranged in each sliding chute; and

a pull handle connecting rod group connected with the two string fasteners and the bow body and used for driving the two string fasteners to synchronously reciprocate along the sliding chute; the string buckle hooks the bow string at the hook buckle end, the string buckle moves from the hook buckle end to the release end to stretch the bow string to the rear end of the bow body, and the string buckle sleeves the bow string hook in a tensioning state at the release end on the string blocking piece.

In a preferred embodiment, the string fastener comprises a fastening opening and a bow-string guiding part; the bow-string guiding part faces the bow string on the bow arm, and the buckling port is positioned at one side of the string buckle, which is different from the bow-string guiding part; the bow string guiding part is connected with the buckling port, and the string buckle is arranged in the sliding chute in a sliding way by at least one sliding piece; the pull handle connecting rod group enables the string buckle to be buckled at the buckling end, and the bow string enters the buckling opening through the bow string guiding part to be buckled.

In a preferred embodiment, the releasing end of the chute is a turning sinking section; the pull handle connecting rod group enables the string buckle to sink and displace at the release end to separate from the bow string, and the bow string in a tensioning state is hooked and sleeved on the string blocking piece.

In a preferred embodiment, the handle link assembly controls the string clasp to rotate at the releasing end by a predetermined angle to make the clasp opening face the direction of the string blocking piece, the bow string is separated from the clasp opening, and the bow string hook in a tensioned state is sleeved on the string blocking piece.

The invention has the beneficial effect that the archer can pull the bowstring backwards in a labor-saving way through the string pulling device.

Compared with the TWI591314 (314 cases for short) in the prior art, the string pulling device ensures that the string pulling action does not involve the reciprocating movement of the limiting part, the safety part, the string hooking part and the trigger in the 314 cases, the string pulling safety device (comprising the safety blocking piece, the safety part and the string blocking part) is fixed on the bow body, the string pulling is performed by the string pulling device, and an archer can pull the string in a more labor-saving way and the safety is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of a bow and a string pulling device thereof according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG. 1.

FIG. 3 is a side view of the bow and its string-pulling device of the present invention.

FIG. 4 is a side view and operation diagram of the present invention.

Fig. 5 is an enlarged schematic view of the block circled in fig. 4.

FIG. 6 is a schematic side view and operation diagram of the present invention.

FIG. 7 is a side view and operation diagram of the present invention.

FIG. 8 is a fourth schematic side view and operation diagram of the present invention.

FIG. 9 is a perspective view of the bow of the present invention and the string-pulling device illustrating the extension of the bowstring to the string-stopping member.

Fig. 10 is a cross-sectional view taken along line X-X of fig. 9.

FIG. 11 is a cross-sectional view and an operation diagram of the bow-bending arrow according to the present invention.

FIG. 12 is a cross-sectional view of a bow-bending archery action of the present invention.

The reference numbers in the figures illustrate:

10-bow body

101-front end

102-back end

11-bowstring

12-arm

121-bow arm fixing seat

13-handle

14-arrow taking device

141-arrow groove

20-string safety device

21-safety catch

22-safety element

23-string stop

24-longitudinal slot

25-spring

28-trigger

30-string pulling device

31-chute

311-hook end

312-Release end

32-string button

321-fastening port

322-bowstring guide

333-sliding part

40-pull handle connecting rod group

41-string buckle connecting rod

413-rotating pivot

42-first pull handle connecting rod

423-rotating pivot

43-second pull-handle connecting rod

433-rotating pivot

434-long hole

44-pull handle

441-fastener

442-Buckle

445-rotating Pivot

446-rotating Pivot

45-through shaft

50-arrow

Detailed Description

Referring to fig. 1 and 2, the bow of the present invention mainly comprises a bow 10, a bow arm 12 with a bow string 11, a handle 13, an arrow engaging device 14, a string safety device 20, a trigger 28, and a string pulling device 30. According to the arrow shooting direction, the bow 10 is divided into a front end 101 and a rear end 102, the handle 13 is assembled below the rear end 102 of the bow 10, the arrow taking device 14 is combined on the top surface of the bow body 10, the top surface of the arrow taking device 14 is provided with an arrow groove 141 for a bow 50 (described in figures 11 and 12) to take and slide, the bow arm 12 is assembled to the bow 10 through a bow arm fixing seat 121 and located in front of the arrow taking device 14, after the string-stretching safety device 20 is assembled with the bow 10 and located on the arrow taking device 14, the string-pulling device 30 controls a string button 32 to displace towards the front end 101 and the rear end 102 of the bow 10, the bow string 11 on the bow arm 12 is stretched backwards to be hooked on a string-blocking piece 23 of the string-stretching safety device 20, the trigger 28 is disposed near the bow 10 of the handle 13 and below the string protector 20, the trigger 28 can control the string stop 23 of the string release device 20 to release the bow string 11 to launch the bow 50 on the arrow device 14.

The string securing device 20 includes a securing catch 21, a securing member 22, and a string blocking member 23, which are pivotally connected to the bow 10 via different pivot axes. The safety catch 21 can limit or release the safety piece 22, the safety piece 22 can limit or release the trigger 28, the rotation pivot of the string blocking piece 23 is arranged in a longitudinal long hole 24 of the bow body 10, the bottom of the string blocking piece 23 is supported by a spring 25 arranged on the bow body 10, accordingly, the string blocking piece 23 can pivot and swing up and down, and the trigger 28 is linked with the string blocking piece 23 and can control the downward movement of the string blocking piece 23.

Referring to fig. 2, the safety catch 21 limits the safety member 22, and the safety member 22 limits the trigger 28 from being pressed. The string fuse 20 is in the fuse mode.

Referring to fig. 11 and 12, the bowstring 11 on the bow arm 12 is pulled backwards and sleeved on the string blocking piece 23 to be in a tensioned and positioned state, the arrow 50 is arranged on the arrow attachment 14 and enters a position to be shot, the safety barrier 21 is pushed upwards by the bowstring 11 and the arrow 50, the safety barrier 21 releases the safety piece 22, the safety piece 22 releases the trigger 28, the string stretching safety device 20 is in a safety release mode, the trigger 28 is pressed, the string blocking piece 23 moves downwards, the string blocking piece 23 is separated from the tensioned bowstring 11, and the bowstring 11 launches the arrow 50.

Referring to fig. 1, 3 and 5, the string pulling device 30 includes a sliding slot 31 respectively disposed on the left and right sides of the bow 10, a string clasp 32 respectively disposed in the sliding slot 31, and a pull rod linkage 40 for controlling the two string clasps 32 to synchronously reciprocate along the sliding slot 31. The chute 31 is a hook 311 toward the front 101 of the bow 10 and a release 312 toward the rear 102 of the bow 10; the release end 312 terminates behind the string stop 23 and is a turning sinker. The pull-handle connecting rod group 40 comprises two string buckle connecting rods 41, a first pull-handle connecting rod 42, a second pull-handle connecting rod 43 and a pull handle 44; the first end of the two buckle links 41 is connected to the buckle 32 by the rotating pivot 413, the second end of the two buckle links 41 is pivotally connected to the first end of the first pull-handle link 42 by a through shaft 45, the second end of the first pull-handle link 42 is connected to the first end of the second pull-handle link 43 by the rotating pivot 423, and the second end of the second pull-handle link 43 is connected to the front end 101 of the bow 10 by the rotating pivot 433; the second end of the pull handle 44 is connected to the front end 101 of the bow 10 by a rotating pivot 445, the first end of the pull handle 44 is provided with a buckle 441, and the buckle 441 can be clamped or separated from a buckle 442 arranged below the handle 13; the pull handle 44 is disposed through a slot 434 of the second pull handle link 43 with a pivot 446.

The string clasp 32 includes a clasp 321 and a bow-string guiding part 322; the bow-string guiding part 322 faces the bow string 11 of the bow arm 12, and the fastening opening 321 is located on the side of the string fastener 32 different from the bow-string guiding part 322; the bowstring guiding part 322 is an arc surface connected with the fastening port 321; the string clasp 32 is slidably disposed in the sliding slot 31 via two sliding members 333.

As shown in fig. 3, the pull handle 44 of the pull handle linkage 40 is fastened to the fastening bolt 442 of the handle 13 by the fastener 441, the pull handle linkage 40 is in a folded state, and the string clasp connecting rod 41, the first pull handle connecting rod 42 and the second pull handle connecting rod 43 position the string clasp 32 at the releasing end 312 of the sliding slot 31.

As shown in fig. 4, 5 and 6, the locking relationship between the buckle 441 and the buckle pin 442 is released, the pull handle 44 swings toward the front end 101 of the bow 10, and the pull handle 44 links the second pull handle link 43, the first pull handle link 42 and the buckle link 41, so as to drive the buckle 32 to move from the releasing end 312 to the hooking end 311 along the sliding slot 31. The string fastener 32 pushes the bow string 11 with the bow string guiding portion 322 and guides the bow string 11 into the fastening opening 321.

As shown in fig. 7 to 10, the handle 44 is swung toward the rear end 102 of the bow 10, and the handle 44 links the second handle link 43, the first handle link 42, and the buckle link 41, so as to drive the buckle 32 to move along the sliding slot 31 from the buckle end 311 to the release end 312. The string clasp 32 has hooked the bowstring 11 and thus stretched the bowstring 11 backwards. When the bowstring 11 stretched backwards touches the string blocking piece 23, the string blocking piece 23 is pressed downwards, the bowstring 11 passes the string blocking piece 23, then the string blocking piece 23 rebounds, at the same time, the string fastener 32 enters the releasing end 312 of the sliding chute 31, because the releasing end 312 is a turning sinking section, the string fastener 32 sinks and displaces to separate from the bowstring 11, and thus, the hook tensioned by the bowstring 11 is sleeved on the string blocking piece 23.

Referring to fig. 11 and 12, the bowstring 11 on the bow arm 12 is pulled backwards and sleeved on the string blocking piece 23 to be in a tensioned and positioned state, the arrow 50 is arranged on the arrow attachment 14 and enters a position to be shot, the safety blocking piece 21 is pushed upwards by the bowstring 11 and the arrow 50, the safety blocking piece 21 releases the safety piece 22, the safety piece 22 releases the trigger 28, and the string safety device 20 is in a safety release mode. The trigger 28 is depressed and the catch 23 moves downwardly and disengages the tensioned bowstring 11, and the bowstring 11 rebounds to launch the bow 50.

The manner of separating the buckle 32 from the bow string 11 and hooking the buckle to the string blocking member 23 includes variations based on the above embodiments, such as: the handle linkage 40 controls the buckle 32 to rotate at the releasing end 312 by a predetermined angle so that the fastening opening 321 faces the string-blocking member 23, the bow string 11 is separated from the fastening opening 321, and the bow string 11 under tension is hooked on the string-blocking member 23.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims (7)

1. A bowstring-pulling device for a bow, comprising: a bow body, a bow arm with a bow string, a handle, an arrow taking device, a string safety device, a trigger and a string pulling device; the bow body is provided with a front end and a rear end along the archery direction, the handle is combined below the rear end of the bow body, the arrow taking device is fixed on the top surface of the bow body, the top surface of the arrow taking device is provided with an arrow groove for a bow to take and slide, the bow arm is combined with the bow body and is positioned in front of the arrow taking device, the string pulling safety device is combined and fixed with the bow body and is positioned behind the arrow taking device, and the trigger is arranged on the bow body, is close to the handle and is positioned below the string pulling safety device; the string-stretching safety device comprises a string-blocking piece which can pivot and swing and can elastically move up and down; the trigger is connected with and controls the string blocking piece to move downwards;

this string pulling device includes:

the sliding chutes are respectively arranged on the left side and the right side of the bow body;

a string button respectively arranged in each sliding chute; and

a pull handle connecting rod group connected with the two string fasteners and the bow body and used for driving the two string fasteners to synchronously reciprocate along the sliding chute; the string buckle moves from the front end of the bow body to the rear end of the bow body along the sliding groove, and the string buckle hooks the bow string to be in a tensioning state and is hooked and sleeved on the string blocking piece.

2. The device for pulling string of a bow according to claim 1, wherein said sliding groove is a hooking end toward the front end of the bow body and a releasing end toward the rear end of the bow body; the releasing end is a turning sinking section; the pull handle connecting rod group enables the string buckle to sink and displace at the release end to separate from the bow string, and the bow string in a tensioning state is hooked and sleeved on the string blocking piece.

3. The device for drawing string into a bow according to claim 1, wherein said string clasp comprises a snap-fit opening and a bow string guide; the bow-string guiding part faces the bow string on the bow arm, and the buckling port is positioned at one side of the string buckle, which is different from the bow-string guiding part; the bow-string guiding part is communicated with the buckling port; the bow string enters the buckling opening through the bow string guiding part, and the string buckle hooks the bow string.

4. The pantograph string pulling device according to claim 3, wherein the pantograph guide portion is a circular arc surface.

5. The device for pulling a string according to claim 1, wherein the string clasp is slidably disposed in the sliding groove by at least one sliding member.

6. The string pulling device for a bow according to claim 1, wherein the string fastener is disposed in the sliding slot at the rear end of the bow body, and the handle linkage controls the string fastener to rotate a predetermined angle to disengage the bow string from the string fastener and hook and sleeve the string stopper.

7. The pantograph tailpiece according to claim 1, wherein said pull handle linkage comprises: two string buckle connecting rods, a first pull handle connecting rod, a second pull handle connecting rod and a pull handle; the first ends of the two string fasteners are respectively connected with the two string fasteners through a rotating pivot, the second ends of the two string fasteners are rotatably pivoted with the first end of the first pull handle connecting rod through a penetrating shaft, the second end of the first pull handle connecting rod is connected with the first end of the second pull handle connecting rod through a rotating pivot, and the second end of the second pull handle connecting rod is connected with the front end of the bow body through a rotating pivot; the second end of the pull handle is connected with the front end of the bow body by a rotating pivot, the first end of the pull handle is provided with a buckle which can be clamped or separated from a buckle bolt arranged below the handle; the pull handle is arranged in a long hole of the second pull handle connecting rod in a penetrating way by a rotating pivot.

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