WO2014190455A1

WO2014190455A1 - Crossbow

Info

Publication number: WO2014190455A1
Application number: PCT/CN2013/000776
Authority: WO
Inventors: 张鸣镝; 张文育; 张强; 吴晨霞; 王素华
Original assignee: 宁波维泰汽车部件有限公司
Priority date: 2013-05-31
Filing date: 2013-06-28
Publication date: 2014-12-04
Also published as: CN103267446A; CN103267446B

Abstract

Disclosed is a crossbow, comprising: a slideway (1); a trigger mechanism (2) located at the head of the slideway (1); a bowstring (4) for pushing an arrow; a bowstring power drive mechanism (51, 52) which is arranged at the end of the slideway (1) in the length direction of the slideway or arranged below the slideway in parallel to the length direction of the slideway and is used for tensioning the bowstring; and a pulley speed increasing mechanism which cooperates with the bowstring power drive mechanism (51, 52) and is used for increasing the pushing speed of the bowstring, wherein the bowstring (4) is wound around the pulley speed increasing mechanism, and the bowstring power drive mechanism (51, 52), and the pulley speed increasing mechanism and the slideway (1) overall satisfy a "columnar" structure together. Such a crossbow gets rid of a "cross" structure form of the existing crossbow and becomes a "columnar" structure form. The plane area is significantly reduced, and the crossbow is convenient to carry and is provided with the pulley speed increasing mechanism to enable this mechanism to have a larger speed increasing ratio.

Description

a kind of

Technical field

The present invention relates to a crucible. Background technique

It is a long-range shooting weapon developed on the basis of bows and arrows. It has played an important role in the era of cold weapons. In the modern era, due to the needs of counter-terrorism and special war conditions, the multi-party improvement has shown good use value.

The materials used to make enamel gradually evolved from bamboo and wood structures to animal materials to metal, nylon, carbon fiber and various polymer materials, and the performance is becoming more and more perfect. However, the existing structure of the raft is to add a vertical slideway and a firing and aiming mechanism in the middle of the bow. Therefore, the existing rafts are the traditional structural mode of the bow-shaped elastic plate plus the vertical slide, and the structure looks like a "" The "cross", occupying a large flat area, is inconvenient for use and carrying under the conditions of jungle and narrow conditions. Summary of the invention

The technical problem to be solved by the present invention is to provide a crucible that is convenient to carry and has a large speed increasing ratio for the above prior art.

The technical solution adopted by the present invention to solve the above technical problem is as follows: the cymbal includes a slide, a firing mechanism at the head of the slide, and a chord for pushing the arrow;

a string power driving mechanism for tensioning strings disposed at the end of the chute along the length of the chute or disposed under the chute in parallel with the length direction of the chute;

A pulley speed increasing mechanism for increasing the string pushing speed in cooperation with the string power driving machine, the string winding on the pulley speed increasing mechanism, and the string power driving mechanism and the pulley speed increasing mechanism together with the slide track satisfy the overall " Columnar "structure.

The string power driving mechanism can be realized in various ways, and can be a compression spring method, a tension spring method, or a cylinder form. The number of the compression springs can be one or multiple, and the tension spring can be For one, it can be multiple.

A preferred embodiment of the string power driving mechanism using the single pressure spring is: the string power driving mechanism comprises: a compression spring and a compression spring positioning tube, the compression spring is sleeved on the compression spring positioning tube, and the compression spring is positioned The tube is fixed at the end of the slide along the length of the slide, or the compression spring positioning tube is all fixed under the slide parallel to the length of the slide, or the compression spring positioning tube portion is fixed under the slide and The length of the slide is set in parallel.

In this case, the pulley speed increasing mechanism can also be implemented in a plurality of ways. One of the better methods is to use two moving pulleys. The specific structure is that the pulley speed increasing mechanism includes:

a string end holder fixed to the pressure spring positioning tube; a movable pulley fixing frame is slidably disposed on the compression spring positioning tube, and the first end of the compression spring is opposite to the chord end fixing frame, and the second end of the compression spring is opposite to the movable pulley fixing frame;

a first movable pulley disposed on the movable pulley fixing frame and located on a side of the compression spring positioning tube;

a second movable pulley is disposed on the movable pulley fixing frame and located on the other side of the compression spring positioning tube, and is symmetrically disposed with the first movable sliding wheel;

a first guide bearing disposed on the compression spring positioning tube, disposed near the end of the slide rail, and located on a side of the slide extension line, between the string end fixing frame and the firing mechanism;

a second guide bearing disposed on the compression spring positioning tube and located on the other side of the slide extension line, symmetrically disposed with the first guide bearing;

The first end of the string is fixed on one side of the string end fixing frame on the compression spring positioning tube, the string is wound around the first moving pulley and then wound to the first guiding bearing, and the string is wound around the first guiding bearing and then wound a second guide bearing, the chord is wound around the second guide bearing and then wound to the second movable pulley, and the second end of the chord after the second movable pulley is fixed to the other end of the compression spring positioning tube.

The pulley speed increasing mechanism is also realized by a matching pulley and a moving pulley. Specifically, the pulley speed increasing mechanism includes:

Fixed pulley fixing frame, fixed on the compression spring positioning tube, close to the firing mechanism;

a movable pulley fixing bracket is slidably disposed on the compression spring positioning tube, away from the firing mechanism, and the first end of the compression spring is opposite to the fixed pulley fixing frame, and the second end of the compression spring is opposite to the movable pulley fixing frame;

a fixed pulley block, disposed on the fixed pulley fixing frame, having a group A fixed pulley on one side of the slide or slide extension line and a B group fixed pulley on the other side of the slide or slide extension line;

The movable pulley block is arranged on the movable pulley fixing frame, and has a group A movable pulley located on one side of the slide rail or the slide extending line and a B group movable pulley located on the other side of the slide rail or the slide extending line; A group fixed pulley and B group fixed The pulleys are symmetrically arranged, and the A group moving pulley and the B group moving pulley are symmetrically arranged;

The first guide bearing is disposed on the compression spring positioning tube, which is higher than the slide rail or the slide extension line, and is located at the end of the slide rail or above the extension line of the slide rail, and is located between the fixed pulley fixing frame and the firing mechanism;

a second guide bearing disposed on the compression spring positioning tube, higher than the slide or slide extension line, located at the end of the slide or the other side of the slide extension line, symmetrically disposed with the first guide bearing;

The first end of the string is fixed on a side of the fixed pulley fixing frame or the movable pulley fixing frame on the compression spring positioning tube, and the string is sequentially wound around the A group fixed pulley and the A group moving pulley to the first guiding bearing, The chord is wound around the first guide bearing and then wound to the second guide bearing. The chord is wound around the second guide bearing and then bypasses the set B pulley and the B set of movable pulleys, and the second end is fixed to the movable pulley fixed frame or the movable pulley fixed frame. Located on the other side of the slide.

In order to reduce the overall machine volume, as an improvement, the pulley speed increasing mechanism includes:

Fixed pulley fixing frame, fixed on the compression spring positioning tube, away from the firing mechanism;

The movable pulley fixing frame is slidably arranged on the compression spring positioning tube, close to the firing mechanism, so that the movable pulley is fixed Between the fixed pulley fixing frame and the firing mechanism, and the first end of the compression spring is opposite to the fixed pulley fixing frame, and the second end of the compression spring is opposite to the movable pulley fixing frame;

The first guide bearing is disposed on the compression spring positioning tube, which is higher than the slide rail or the slide extension line, is located at the end of the slide rail or the upper side of the slide extension line, is close to the fixed pulley fixing frame, and the fixed pulley fixing frame is located Between the first guide bearing and the firing mechanism;

The first end of the string is fixed on a side of the fixed pulley fixing frame or the movable pulley fixing frame on the compression spring positioning tube, and the string is sequentially wound around the A group fixed pulley and the A group moving pulley, and then wound to the first guiding bearing, The chord is wound around the first guiding bearing and then wound to the second guiding bearing. The chord is wound around the second guiding bearing, and then the second end of the group B fixed pulley and the B group movable pulley are sequentially fixed to the movable pulley fixing frame or the movable pulley fixing frame. Located on the other side of the slide.

With such a structure, the length of the compression spring positioning pipe can be effectively utilized, so that the overall length of the crucible can be shortened and it is more convenient to carry.

The number of the fixed pulleys of the group A is N, N is any natural number, the number of the pulleys of the group B is M, and M is any natural number, and the number of the movable pulleys of the group A is X, and X is any one. For the natural number, the number of the B sets of moving pulleys is Υ, and Υ is any natural number.

A preferred embodiment of the string power driving mechanism using the tension spring is: the string power driving mechanism comprises: a tension spring and a hollow tension spring fixing frame, and the tension spring fixing frame is fixed at the end of the slide rail along the length of the slide rail The direction setting, or the tension spring fixing frame is all fixed under the sliding track and arranged in parallel with the length direction of the slide rail, or the tension spring fixing frame portion is fixed under the sliding channel and disposed parallel to the longitudinal direction of the slide rail, and the tension spring is The first end is fixed to the tension spring fixing frame. The number of the tension springs may be one or more.

In this case, the pulley speed increasing mechanism includes:

Fixed pulley holder, fixed in the tension spring fixing frame, close to the side of the firing mechanism;

a movable pulley fixing frame is disposed in the tension spring fixing frame, away from the firing mechanism; the first end of the tension spring is fixed on the tension spring fixing frame away from the side of the firing mechanism, and the second end of the tension spring and the movable pulley fixing frame Connected

a fixed pulley block, which is arranged on the fixed pulley fixing frame, has a set of pulleys on one side of the slide or slide extension line, and a set of fixed pulleys on the other side of the slide or slide extension line;

The movable pulley block is arranged on the movable pulley fixing frame, and has a group A movable pulley located on one side of the slide rail or the slide extending line and a B group movable pulley located on the other side of the slide rail or the slide extending line; A group fixed pulley and B group fixed Symmetrical setting of pulleys, A The set moving pulley and the B set moving pulley are symmetrically arranged;

a first guide bearing located on a side of the slide or above the extension of the slide;

a second guide bearing, located on the other side of the slideway or above the extension line of the slideway, symmetrically disposed with the first guide bearing;

The first end of the string is fixed on one side of the fixed pulley fixed frame or the movable pulley fixed frame, and the string is wound around the A set fixed pulley and the A set moving pulley in turn, and then wound to the first guiding bearing, the string winding After the first guide bearing is wound, the second guide bearing is wound, and the chord is wound around the second guide bearing, and then the second end of the B set fixed pulley and the B set movable pulley are fixed in turn, and the movable pulley fixed frame or the movable pulley fixed frame is located on the sliding The other side of the road.

Similarly, in order to reduce the volume of the whole machine, the position of the fixed pulley holder, the movable pulley fixing clamp and the two guiding bearings in the pulley speed increasing mechanism needs to be slightly changed. Specifically, the pulley speed increasing mechanism includes:

Fixed pulley holder, fixed in the tension spring fixing frame, away from the side of the firing mechanism;

The movable pulley fixing frame is disposed in the tension spring fixing frame near the side of the firing mechanism; the first end of the tension spring is fixed on the tension spring fixing frame near the side of the firing mechanism, and the second end of the tension spring and the movable pulley The fixed frame is connected; the fixed pulley block is arranged on the fixed pulley fixing frame, and has a group A fixed pulley on one side of the slide or slide extension line and a group B fixed pulley on the other side of the slide or slide extension line;

a first guide bearing located on a side of the slide or slide extension line;

a second guide bearing, located on the other side above the slide or slide extension line, symmetrically disposed with the first guide bearing;

The first end of the string is fixed on one side of the fixed pulley fixed frame or the movable pulley fixed frame, and the string is sequentially wound around the A set fixed pulley and the A set moving pulley, and then wound to the first guiding bearing, the string winding After the first guide bearing is wound, the second guide bearing is wound, and the chord is wound around the second guide bearing, and then the second end of the B set fixed pulley and the B set movable pulley are fixed in turn, and the movable pulley fixed frame or the movable pulley fixed frame is located on the sliding The other side of the road.

A preferred method for using the double-pressure spring of the string power driving mechanism is as follows: The string power driving mechanism comprises: a first pressure spring, a second pressure spring, a first pressure spring positioning column, and a second pressure spring positioning. a column and a positioning tube, the first compression spring is sleeved on the first compression spring positioning column, the second compression spring is sleeved on the second compression spring positioning column, and the positioning tube is fixed at the end of the slide rail The length of the track is set, or the positioning tube is fixed to the slide rail and disposed parallel to the length direction of the slide rail, or the positioning tube portion is fixed under the slide rail and disposed parallel to the length direction of the slide rail; The second compression spring positioning columns are respectively located on both sides of the positioning tube.

In this case, the pulley speed increasing mechanism includes:

Fixed pulley holder, fixed on the positioning tube, close to the firing mechanism;

Moving pulley fixing frame, slidingly disposed on the positioning tube, away from the firing mechanism; The first end of the first compression spring positioning post is fixed on the fixed pulley fixing frame, and the second end of the first compression spring positioning column is movably disposed on the movable pulley fixing frame, and the first compression spring is located on the fixed pulley fixing frame and the movable pulley Between the fixing frames, the first end of the second compression spring positioning post is also fixed on the fixed pulley fixing frame, and the second end of the second compression spring positioning column is movably disposed on the movable pulley fixing frame, and the second compression spring is located Between the fixed pulley holder and the movable pulley holder;

a fixed pulley set, disposed on the fixed pulley fixing frame, having a set of fixed pulleys on one side of the positioning tube and a set of fixed pulleys on the other side of the positioning tube;

The movable pulley block is disposed on the movable pulley fixing frame, and has an A group moving pulley on one side of the positioning tube and a B group moving pulley on the other side of the positioning tube, a group A fixed pulley and a B group fixed pulley are symmetrically arranged, and the A group moving pulley and Group B moving pulleys are symmetrically arranged;

a first guide bearing disposed on the fixed pulley fixing frame or the positioning tube, higher than the extension line of the slide rail or the slide rail, located above the slide rail or above the extension line of the slide rail;

The second guide bearing is disposed on the movable pulley fixing frame or the positioning tube, which is higher than the extension line of the slide rail or the slide rail, and is located above the slide rail or on the other side above the extension line of the slide rail, and is symmetrically arranged with the first guide bearing ;

The first end of the string is fixed on one side of the fixed pulley fixing frame or the movable pulley fixing frame on the positioning tube, and the string is sequentially wound around the A group moving pulley and the A group fixed pulley, and then wound to the first guiding bearing, the string winding After the first guiding bearing is wound, the second guiding bearing is wound, and the chord is wound around the second guiding bearing, and then the second end of the B group moving pulley and the B group fixed pulley are sequentially fixed to the fixed pulley fixing frame or the movable pulley fixing frame. Position the other side of the tube.

Similarly, changing the position of the fixed pulley holder, the fixed pulley block, the movable pulley holder and the movable pulley block, and the guide bearing can reduce the overall size.

A preferred solution for the cylinder power driving mechanism to adopt a cylinder is: the string power driving mechanism is a cylinder, the cylinder includes a cylinder body and a piston rod that is sealed and disposed in the cylinder body; the cylinder is fixed at the end of the sliding rail or Partially fixed under the slide.

In this case, the pulley speed increasing mechanism includes:

Fixed pulley fixing frame fixed on the cylinder block of the cylinder, close to the firing mechanism;

The movable pulley fixing frame is fixedly disposed on the piston rod of the cylinder, away from the firing mechanism;

a fixed pulley block, which is arranged on the fixed pulley fixing frame, and has a group A fixed pulley on one side of the cylinder body and a group B fixed pulley on the other side of the cylinder block;

The movable pulley block is disposed on the movable pulley fixing frame, and has a group A movable pulley on one side of the piston rod and a B group movable pulley on the other side of the piston rod, a set of fixed pulleys and a set of fixed pulleys of the group B, and a group of movable pulleys and B The assembly pulley is symmetrically arranged;

a first guide bearing disposed on the cylinder body, disposed near the end of the slide rail and located on a side of the slide extension line; a second guide bearing disposed on the cylinder block and located at the slide extension line One side, symmetrically disposed with the first guide bearing;

The first end of the string is fixed on one side of the moving pulley fixing frame or the fixed pulley fixing frame, and the string is in turn After bypassing the group A fixed pulley and the group A moving pulley, the first guiding bearing is wound, and the string is wound around the first guiding bearing and then wound to the second guiding bearing, and the string bypasses the second guiding bearing and then bypasses the group B in turn. The second end of the fixed pulley and the B set of movable pulleys is fixed to the movable pulley fixing frame or the fixed pulley fixing frame on the other side of the cylinder.

In the raft structure provided by the present invention, an elastic pressing piece for clamping the arrow body is disposed above the first slide rail, and the elastic pressing piece functions to fix the position of the arrow so that the arrow does not shift and move in the sliding path. Second, it can play a guiding role in the launch of the arrow.

In the 弩 structure provided by the present invention, a U-shaped chord resisting block for holding a string is disposed at the head of the slide, and the U-shaped groove of the U-shaped yoke resisting block can just accommodate the arrow tail, the chord resisting block and the firing mechanism Connected and released by the firing mechanism to release the string. In this way, the tail can directly contact the string. After the firing, the string can directly push the arrow forward. This structure improves the current state of the arrow in the middle of the arrow, and has the effect of increasing the range.

Compared with the prior art, the invention has the advantages that: the string power driving mechanism is disposed at the end of the chute along the length of the chute or disposed under the chute in parallel with the length of the chute, and the string power driving mechanism and the pulley increase The speed mechanism and the slideway together satisfy the overall "columnar" structure, and get rid of the existing "cross" structure form, and become a "columnar" structure form, the plane area is obviously reduced, it is convenient to carry, and the pulley speed increasing mechanism can be provided. This mechanism has a large rate of increase. DRAWINGS

1 is a schematic perspective structural view of a crucible according to a first embodiment of the present invention;

2 is a schematic view showing the three-dimensional structure of the cymbal in the second embodiment of the present invention (the string is not tensioned);

3 is a schematic perspective view of a cymbal in a second embodiment of the present invention (string tension state);

4 is a schematic perspective view of a third embodiment of the present invention (string untensioned state);

Figure 5 is a perspective view showing the three-dimensional structure of the cymbal in the fourth embodiment of the present invention (the string is not tensioned);

6 is a schematic perspective view of a cymbal in a fourth embodiment of the present invention (string tension state);

Figure 7 is a perspective view showing the three-dimensional structure of the cymbal in the fifth embodiment of the present invention (the string is not tensioned);

Figure 8 is a perspective view showing the three-dimensional structure of the cymbal in the fifth embodiment of the present invention (string tension state);

Figure 9 is a perspective view showing the three-dimensional structure of the cymbal in the sixth embodiment of the present invention (the string is not tensioned);

Figure 10 is a perspective view showing the three-dimensional structure of the cymbal in the sixth embodiment of the present invention (string tension state);

Figure 11 is a perspective view showing the three-dimensional structure of the cymbal in the eighth embodiment of the present invention (the string is not tensioned);

Figure 12 is a perspective view showing the three-dimensional structure of the cymbal in the fifteenth embodiment of the present invention (the string is not tensioned);

Figure 13 is a perspective view showing the three-dimensional structure of the cymbal in the fifteenth embodiment of the present invention (string tension state);

Figure 14 is a perspective view showing the three-dimensional structure of the cymbal in the sixteenth embodiment of the present invention (the string is not tensioned);

Figure 15 is a perspective view showing the three-dimensional structure of the cymbal in the sixteenth embodiment of the present invention (string tension state);

Figure 16 is a perspective view showing the three-dimensional structure of the cymbal in the seventeenth embodiment of the present invention (the string is not tensioned);

Figure 17 is a perspective view showing the three-dimensional structure of the crucible in the seventeenth embodiment of the present invention (string tension state). detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

Embodiment 1: (two rounds of forward)

As shown in Figure 1, it includes

For the slide 1, the slide 1 can be made of wood or metal material, and the arrow body accommodates the channel in the middle; the firing mechanism 2 at the head of the slide 1 is provided with an elastic pressure for clamping the arrow body above the first slide Slice 3; push the string 4 of the arrow;

a string power driving mechanism for tensioning the string 4, the string power driving mechanism comprises: a compression spring 51 and a compression spring positioning tube 52, the compression spring 51 is sleeved on the compression spring positioning tube 52, and the compression spring positioning tube 52 is fixed At the end of the slide 1;

a pulley speed increasing mechanism for stimulating the plucking speed of the chord 4 in cooperation with the chord power driving mechanism, the pulley speed increasing mechanism comprising: a chord end fixing bracket 101 fixed to the pressure spring positioning tube 52, adjacent to the firing mechanism 2;

The movable pulley holder 102 is slidably disposed on the compression spring positioning tube 52 away from the firing mechanism 2, and the first end of the compression spring 51 abuts the chord end holder 101, and the second end of the compression spring 51 is fixed to the movable pulley The first movable pulley 103 is disposed on the movable pulley fixing frame 102 and located on the side of the compression spring positioning tube 52. The second movable pulley 104 is disposed on the movable pulley fixing frame 102 and located in the compression spring positioning tube. The other side of 52 is symmetrically disposed with the first movable pulley 103;

The first guide bearing 105 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 107, is disposed near the end of the slideway 1, and is located on the side of the extension line of the slideway 1, and is located at the string end fixing frame 101 and the firing mechanism. The second guide bearing 106 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 107, and is located on the other side of the extension line of the slideway 1, and is symmetrically disposed with the first guide bearing 105;

The first end of the string 4 is fixed on one side of the string end fixing frame 101 on the compression spring positioning tube 52, and the string 4 is wound around the first moving pulley 103 and then wound around the first guiding bearing 105, and the string 4 is wound out. The first guide bearing 105 is then wound around the second guide bearing 106. The chord 4 is wound around the second guide bearing 106 and then wound around the second movable pulley 103. The second end of the chord 4 after the second movable pulley 103 is fixed is fixed. The string end holder 102 is located on the other side of the compression spring positioning tube 52.

The slide rail 1 is first provided with a U-shaped string resisting block 7 for holding the string, and the U-shaped groove 71 of the U-shaped string resisting block 7 can just accommodate the arrow tail, and the string resisting block 7 is coupled with the firing mechanism 2, and The buckled string can be released by the firing mechanism 2.

In addition, a U-shaped foot ring 8 is also provided at the end of the compression spring positioning tube 52.

The structure of the above structure is basically a "columnar" structure, more like a "one stick" style, no longer a "cross" structure, the pulley speed increasing mechanism can increase the speed increase ratio of the string, and increase the push of the string to the arrow. The length of action, the structure is relatively light and easy to carry.

When in use, the whole machine can be placed vertically, the foot is stepped on the U-shaped foot brace 8, and then the string 4 is pulled by the upper string pull hook To the firing mechanism 2, at this time, under the action of the string 4, the movable pulley holder 102 slides along the compression spring positioning tube 52, at which time the compression spring 51 is compressed, and the U-shaped string abutting block 7 is used to fasten the string, and then the whole The machine is laid flat, the arrow is placed in the slideway, the arrow tail is placed in the U-shaped groove 71 of the U-shaped string resisting block 7 and is opposite to the string. When the trigger of the firing mechanism 2 is pulled, the string resisting block 7 is released and buckled. String 4, under the push of the string 4, the arrow flies high toward the end of the chute; at the same time, under the return force of the compression spring 51, the compression spring 51 is quickly reset. Embodiment 2 (four rounds of forward)

Different from the first embodiment, the pulley speed increasing mechanism includes, as shown in FIG. 2 and FIG. 3:

Fixed pulley holder 201, fixed on the compression spring positioning tube 52, close to the firing mechanism 2;

The movable pulley holder 202 is slidably disposed on the compression spring positioning tube 52 away from the firing mechanism 2, and the first end of the compression spring 51 abuts the fixed pulley holder 201, and the second end of the compression spring 51 is fixed to the movable pulley The fixed pulley 203 is disposed on the fixed pulley fixing frame 201 and located on the side of the compression spring positioning tube 52. The second fixed pulley 204 is disposed on the fixed pulley fixing frame 201 and located at The other side of the compression spring positioning tube 52 is symmetrically disposed with the first fixed pulley 203;

The first movable pulley 205 is disposed on the movable pulley fixing frame 202 and located on the side of the compression spring positioning tube 52. The second movable pulley 206 is disposed on the movable pulley fixing frame 202 and located on the other side of the compression spring positioning tube 52. , symmetrically disposed with the first movable pulley 205;

The first guide bearing 207 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 209, is disposed near the end of the slideway 1, and is located on the side of the extension line of the slideway 1, and is located in the fixed pulley fixing frame 201 and the firing mechanism. The second guide bearing 208 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 209, and is located on the other side of the extension line of the slideway 1, and is symmetrically disposed with the first guide bearing 207;

The first end of the string 4 is fixed on one side of the movable pulley fixing frame 202 on the side of the compression spring positioning tube 52, and the string 4 is wound around the first fixed pulley 203 and then wound around the first movable pulley 205, and the string is wound out first. The movable pulley 205 is then wound toward the first guiding bearing 207. The chord is wound around the first guiding bearing 207 and then wound to the second guiding bearing 208. The chord is wound around the second guiding bearing 208 and then wound to the second movable pulley 206. The chord is wound around the second movable pulley 206 and then wound to the second fixed pulley 204. The second end of the chord is wound around the second fixed pulley 204, and the movable pulley fixing frame 202 is located at the compression spring positioning tube 52. When the string 4 is pulled to the firing mechanism 2, as shown in FIG. 3, the compression spring 51 is compressed, the string 4 is buckled by the U-shaped string abutting block 7, the arrow is placed in the slide, and the arrow tail is placed against the U-shaped string. The U-shaped groove 71 of the block 7 is in contact with the chord. When the trigger of the firing mechanism 2 is pulled, the chord resisting block 7 releases the engaged chord 4, and under the push of the chord 4, the arrow flies high toward the end of the chute. Embodiment 3 (four rounds of reverse)

Different from the second embodiment, the slide rail 1 is long, and the compression spring positioning tube 52 is fixed under the slide rail 1; The positions of the fixed pulley holder 201 and the movable pulley holder 202, and the positions of the first guide bearing 207 and the second guide bearing 208 are different from those of the second embodiment. Referring to FIG. 4, specific:

The movable pulley holder 202 is slidably disposed on the compression spring positioning tube 52, adjacent to the firing mechanism 2;

The fixed pulley fixing frame 201 is fixed on the compression spring positioning pipe 52, away from the firing mechanism 2, and the movable pulley fixing frame 202 is located between the fixed pulley fixing frame 201 and the firing mechanism 2;

The first end of the compression spring 51 abuts the fixed pulley holder 201, and the second end of the compression spring 51 abuts the movable pulley fixing frame 202;

The first guide bearing 207 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 209, on a side above the extension line of the slide 2, close to the fixed pulley fixing frame 201, and the fixed pulley fixing frame 201 is located Between the guide bearing frame 209 and the movable pulley holder 202;

The second guide bearing 208 is disposed on the compression spring positioning pipe 52 through the guide bearing frame 209, and is located on the other side of the extension line of the slideway 1, near the fixed pulley fixing frame 201, and the fixed pulley fixing frame 201 is located at the guide bearing Between the frame 209 and the movable pulley holder 202, symmetrically disposed with the first guide bearing 207;

The first end of the string 4 is fixed on one side of the movable pulley fixing frame 202 on the side of the compression spring positioning tube, and the string 4 is wound around the first fixed pulley 203 and then wound around the first movable pulley 205, and the string 4 is wound out of the first The movable pulley 205 is wound around the first guide bearing 207 through the first steering bearing (the figure is not shown), and the string 4 is wound around the first guide bearing 207 and then wound to the second guide bearing 208, and the string is wound out. The second guide bearing 208 is then passed to the second movable pulley 206 through the second steering bearing 210. The chord 4 is wound around the second movable pulley 206 and then wound around the second fixed pulley 204. The chord 4 is wound around the second fixed pulley 204. The second end is fixed to the movable pulley holder 202 on the other side of the compression spring positioning tube 52.

The action of the first steering bearing and the second steering bearing is provided to make the winding of the string 4 smoother and does not directly rub against the fixed pulley holder 201.

This embodiment differs from the second embodiment in that the positions of the two guide bearings 207, 208 are far from the firing mechanism 2, so that when the tensioning string 4 compresses the compression spring 51, the length of the compression spring positioning tube can be effectively utilized, thereby making it possible to The overall length of the cymbal is shorter and more convenient to carry.

The method of use is the same as that of the third embodiment. Embodiment 4 (six round forward)

Different from the second embodiment, the movable pulley holder 202 is provided with four movable pulleys, as shown in Fig. 5 and Fig. 6, respectively:

The third movable pulley 211 is disposed on the movable pulley fixing frame 202 along the first movable pulley 205, and is located on the side of the compression spring positioning tube 52; The fourth movable pulley 212 is disposed on the movable pulley fixing frame 202 along the second movable pulley 206, and is located on the other side of the compression spring positioning tube 52, and is symmetrically disposed with the third movable pulley 211;

The first end of the string 4 is fixed on one side of the fixed pulley fixing frame 201 on the compression spring positioning tube 52, and the string 4 is wound around the first movable pulley 205 and then wound around the first fixed pulley 203, and the string is wound out. The fixed pulley 203 is then wound around the third movable pulley 211. The chord is wound around the third movable pulley 211 and then wound around the first guiding bearing 207. The chord is wound around the first guiding bearing 207 and then wound to the second guiding bearing 208. The chord is wound around the second guide bearing 208 and then wound around the fourth movable pulley 212. The chord is wound around the fourth movable pulley 212 and then wound around the second fixed pulley 204. The chord is wound around the second fixed pulley 204 and then wound to the second The movable pulley 206 is fixed to the other side of the fixed spring retainer 201 on the other side of the compression spring positioning tube 52.

The method of use is the same as the second embodiment. When the string 4 is pulled to the firing mechanism 2, as shown in FIG. 6, the compression spring 51 is compressed, and the string 4 is buckled by the U-shaped string resisting block 7, and the arrow is set in the slide, the tail The U-shaped groove 71 of the U-shaped string resisting block 7 is placed against the chord. When the trigger of the firing mechanism 2 is pulled, the chord resisting block 7 releases the buckled chord 4, and the yaw 4 pushes the arrow at a high speed. Fly in the end of the road. Embodiment 5: (six rounds of reverse)

Different from the fourth embodiment, the slide 1 is made longer, the compression spring positioning tube 52 is fixed under the slide 1; the position of the fixed pulley 201 and the movable pulley holder 202, and the first guide bearing 207 and The position of the second guide bearing 208 is different from that of the fourth embodiment, as shown in Figures 7 and 8, the specific - movable pulley holder 202 is slidably disposed on the compression spring positioning tube 52, adjacent to the firing mechanism 2;

The first end of the string 4 is fixed on one side of the fixed pulley fixing frame 201 on the compression spring positioning tube, and the string 4 is wound around the first fixed pulley 203 and then wound around the first movable pulley 205, and the string 4 is wound out. After the movable pulley 205 is passed through the first steering bearing 213 to the first guiding bearing 207, the string 4 is wound around the first guiding bearing 207 and then wound to the second guiding bearing 208, and the string passes through the second guiding bearing 208 and passes through The second steering bearing 210 is wound around the second movable pulley 206. The chord 4 is wound around the second movable pulley 206 and then wound to the second fixed pulley 204. The chord 4 is wound around the second fixed pulley 204. The two ends are fixed to the movable pulley holder 202 on the other side of the compression spring positioning tube 52.

The action of the first steering bearing 213 and the second steering bearing 210 is provided to make the winding of the string 4 smoother and does not directly rub against the fixed pulley holder 201.

This embodiment differs from the fourth embodiment in that the positions of the two guide bearings 207, 208 are far from the firing mechanism 2, so that when the tensioning string 4 compresses the compression spring 51, the length of the compression spring positioning tube 52 can be effectively utilized, thereby The overall length of the cymbal is shorter and more convenient to carry.

The method of use is the same as the fourth embodiment. When the string 4 is pulled to the firing mechanism, as shown in FIG. 8, the compression spring 51 is compressed, the string 4 is buckled by the U-shaped string abutting block 7, and the arrow 9 is set in the slide, the tail The U-shaped groove 71 of the U-shaped string resisting block 7 is placed against the chord. When the trigger of the firing mechanism is pulled, the chord resisting block 7 releases the buckled chord 4, and under the push of the chord 4, the high-speed slide of the arrow Fly in the end direction. Example 6 (eight rounds forward)

Different from the fourth embodiment, the positions of the four movable pulleys are different, and the fixed pulley holder 201 is also provided with four fixed pulleys, as shown in Fig. 9 and Fig. 10,

The positions of the four fixed pulleys are as follows:

The first fixed pulley 203 is disposed on the fixed pulley fixing frame 201 and located on the side of the compression spring positioning tube 52. The second fixed pulley 204 is disposed on the fixed pulley fixing frame 201 and located in the compression spring positioning tube The other side of 52 is symmetrically disposed with the first fixed pulley 203;

a third fixed pulley 214 is disposed on the fixed pulley fixing frame 201 and located on the side of the compression spring positioning tube 52, and is disposed at a distance from the first fixed pulley 203;

a fourth fixed pulley 215 is disposed on the fixed pulley fixing frame 201 and located on the other side of the compression spring positioning tube 52, and symmetrically disposed with the third fixed pulley 214;

The position of the four movable pulleys is specifically - the first movable pulley 205 is disposed on the movable pulley fixing frame 202 and located at the side of the compression spring positioning tube 52; the second movable pulley 206 is disposed on the movable pulley fixing frame 202 and located at The other side of the compression spring positioning tube 52 is symmetrically disposed with the first movable pulley 205;

The third movable pulley 211 is disposed on the movable pulley fixing frame 202 and located on the side of the compression spring positioning tube 52, and is arranged in parallel with the first movable pulley 205;

a fourth movable pulley 212 is disposed on the movable pulley fixing frame 202 and located on the other side of the compression spring positioning tube 52, and symmetrically disposed with the third movable pulley 211;

The first end of the string 4 is fixed on one side of the movable pulley fixing frame 202 on the side of the compression spring positioning tube 52, and the string 4 is wound around the first fixed pulley 203 and then wound around the first movable pulley 205, and the string is wound out first. The movable pulley 205 is wound around the third fixed pulley 214. The chord is wound around the third fixed pulley 214 and then wound around the third movable pulley 211. The chord is wound around the third movable pulley 211 and then wound toward the first guiding bearing 207. Winding around the first guide bearing 207 and then winding to the second guide bearing 208, The chord is wound around the second guide bearing 208 and then wound around the fourth movable pulley 212. The chord is wound around the fourth movable pulley 212 and then wound around the second fixed pulley 215, and the chord is wound around the second fixed pulley 215. The second movable pulley 206 is wound around the second movable pulley 206 and is wound around the fourth fixed pulley 215. The second end of the string after the fourth fixed pulley 215 is fixed to the movable pulley fixing frame 202 at the compression spring positioning tube 52. The other side.

The method of use is the same as the fourth embodiment. When the string 4 is pulled to the firing mechanism, as shown in FIG. 10, the compression spring 51 is compressed, and the string 4 is buckled by the U-shaped string resisting block 7, and the arrow is set in the slideway, and the tail is placed. The U-shaped groove 71 of the U-shaped string resisting block 7 is in contact with the chord. When the trigger of the firing mechanism is pulled, the chord resisting block 7 releases the buckled string 4, and under the push of the string 4, the arrow is high-speed toward the end of the slide. Fly in the direction. Example 7 (eight rounds of reverse)

Different from the sixth embodiment are: the position of the pulley fixing frame and the movable pulley fixing frame, and the positions of the first guiding bearing and the second guiding bearing; the position of the pulley fixing frame and the movable pulley fixing frame, and the first guiding bearing and the second guiding The position of the bearing is the same as that placed in the fifth embodiment. The winding method of the string is the same as that of the sixth embodiment.

The position of the two guide bearings is far from the firing mechanism, so that the length of the positioning tube of the compression spring can be effectively utilized when the compression of the compression spring is performed, so that the length of the crucible can be made shorter and more convenient to carry. The method of use is the same as that of the sixth embodiment. Example 8 (double pressure spring six round forward)

Different from the fourth embodiment, the string power driving mechanism includes: a first pressure spring 61, a second pressure spring 62, a first pressure spring positioning post 63, a second compression spring positioning post 64, and a positioning tube 65, The first compression spring 61 is sleeved on the first compression spring positioning post 63, and the second compression spring 64 is sleeved on the second compression spring positioning post 64. The positioning tube 65 is fixed to the end of the slide rail, and the first pressure is applied. The spring positioning post 63 and the second compression spring positioning post 64 are respectively located on both sides of the positioning tube 65; see FIG.

The fixed pulley fixing frame 201 of the pulley speed increasing mechanism is fixed on the positioning pipe 65 and adjacent to the firing mechanism; the movable pulley fixing frame 202 is slidably disposed on the positioning pipe 65 away from the firing mechanism; the first compression spring positioning post 63 The first end of the first compression spring positioning post 63 is movably disposed on the movable pulley fixing frame 202. The first compression spring 61 is located on the fixed pulley fixing frame 201 and the movable pulley fixing frame 202. The first end of the second compression spring positioning post 64 is also fixed on the fixed pulley fixing frame 201. The second end of the second compression spring positioning post 64 is movably disposed on the movable pulley fixing frame 202, and the second pressure is applied. The spring 62 is located between the fixed pulley fixing frame 201 and the movable pulley fixing frame 202;

The two fixed pulleys, the four movable pulleys and the two guide bearings are arranged in the same manner as in the fourth embodiment. The winding method of the string is also the same as that of the fourth embodiment. The method of use is the same as that of the fourth embodiment. Embodiment 9 (double pressure spring four-wheel forward)

Different from the eighth embodiment, the number of pulleys in the pulley speed increasing mechanism is two, and the number of moving pulleys is also two. The two fixed pulleys and the two movable pulleys are arranged in the same manner as in the second embodiment, and the winding method of the strings is also the same as the second embodiment. The method of use is the same as that of the second embodiment. Embodiment 10 (double pressure spring eight round forward)

Different from the eighth embodiment, the number of pulleys in the pulley speed increasing mechanism is four, and the number of moving pulleys is also four, and the four fixed pulleys and the four movable pulleys are arranged in the same manner as in the sixth embodiment, and the winding method of the strings is also Same as the sixth embodiment. The method of use is the same as in the sixth embodiment. Embodiment 11 (double pressure spring six-wheel reverse)

Different from the eighth embodiment, the position of the fixed pulley fixing frame and the movable pulley fixing frame, the position of the first guiding bearing, the second guiding bearing and the positioning pipe; the position of the fixed pulley fixing frame and the movable pulley fixing frame, the first guiding bearing, The position of the second guide bearing and the positioning pipe is the same as that of the fifth embodiment. The winding of the string is the same as in the seventh embodiment. Embodiment 12 (double pressure spring four-wheel reverse)

Different from the embodiment nin, the position of the fixed pulley fixing frame and the movable pulley fixing frame, the positions of the first guiding bearing, the second guiding bearing and the positioning pipe; the position of the fixed pulley fixing frame and the movable pulley fixing frame, the first guiding bearing, The positions of the second guide bearing and the positioning pipe are the same as those of the third embodiment. The winding method of the string is the same as that of the third embodiment. Embodiment 13 (double pressure spring eight-wheel reverse)

Different from the tenth embodiment, the position of the fixed pulley fixing frame and the movable pulley fixing frame, the positions of the first guiding bearing, the second guiding bearing and the positioning pipe; the position of the fixed pulley fixing frame and the movable pulley fixing frame, and the first guiding bearing The position of the second guide bearing and the positioning pipe is the same as that of the seventh embodiment. The winding of the string is the same as in the seventh embodiment. Embodiment 14 (reverse two rounds)

Different from the first embodiment, the slide rail is made longer, the compression spring positioning tube is fixed under the slide rail 1; the position of the string end fixing bracket and the movable pulley fixing bracket, and the first guide bearing and the second guide bearing The location is different from the first embodiment, specifically:

a movable pulley fixing frame, which is arranged on the pressure spring positioning tube and is close to the firing mechanism;

The string end fixing bracket is fixed on the compression spring positioning tube, away from the firing mechanism, and the movable pulley fixing frame is located between the string end fixing frame and the firing mechanism;

The first guide bearing is disposed on the compression spring positioning pipe through the guide bearing frame, located at a side above the last end of the slideway, close to the string end fixing frame, and the string end fixing frame is located at the guide bearing frame and the movable pulley fixing frame Between

a second guiding bearing is disposed on the compression spring positioning pipe through a guide bearing frame, and is located on the other side of the upper end of the slideway 1, near the string end fixing frame, and the string end fixing frame is located at the guide bearing frame and the movable pulley fixing frame Between, and first The guide bearing is symmetrically arranged;

The winding of the string is the same as that of the first embodiment.

This embodiment differs from the first embodiment in that the positions of the two guide bearings are far from the firing mechanism, so that the length of the compression spring positioning tube can be effectively utilized when the compression of the compression spring is performed, so that the length of the crucible can be made. Short, more convenient to carry.

The method of use is the same as in the first embodiment. Example 15 (double tension spring, eight round forward)

Different from the second embodiment, as shown in FIGS. 12 and 13, the string power driving mechanism comprises: two tension springs 81 and a hollow columnar spring fixing frame 82, and the first ends of the two tension springs 81 are fixed at The tension spring fixing frame 82 is fixed to the end of the slide rail 1 away from the hollow tension spring fixing frame 82 on the side of the firing mechanism 2;

In the pulley speed increasing mechanism:

The fixed pulley fixing frame 201 is fixed in the tension spring fixing frame 82, adjacent to the side of the firing mechanism 2;

The movable pulley holder 202 is disposed in the tension spring fixing frame 82 away from the firing mechanism 2; and the second ends of the two tension springs 81 are connected to the movable pulley fixing frame 202;

The fixed pulley fixing frame 201 is provided with four fixed pulleys, and the movable pulley fixing frame 202 is provided with four movable pulleys; respectively:

The first fixed pulley 203 is disposed on the fixed pulley fixing frame 201 and located on the side of the extension line 1 of the slide track 1; the second fixed pulley 204 is disposed on the fixed pulley fixing frame 201 and located on the slide 1 The other side of the extension line 1 is symmetrically disposed with the first fixed pulley 203;

a third fixed pulley 214 is disposed on the fixed pulley fixing frame 201 and located on one side of the extension line of the slide rail 1 and spaced apart from the first fixed pulley 203; the first fixed pulley 203 and the third fixed pulley 214 For a group, it is called a group A fixed pulley;

The fourth fixed pulley 215 is disposed on the fixed pulley fixing frame 201 and located on the other side of the extension line of the slideway 1 and symmetrically disposed with the third fixed pulley 214; the second fixed pulley 204 and the second fixed pulley 204 are one Group, become a group B fixed pulley;

The first movable pulley 205 is disposed on the movable pulley fixing frame 202 and located on one side of the extension line of the slide track 1; the second movable pulley 206 is disposed on the movable pulley fixing frame 202 and located on the other side of the extension line of the slideway 1 , symmetrically disposed with the first movable pulley 205;

The third movable pulley 211 is disposed on the movable pulley fixing frame 202 and is located on the side of the extension line of the slideway 1, and is arranged in parallel with the first movable pulley 205; the first movable pulley 205 and the third movable pulley 211 are a group, For Group A moving pulleys;

The fourth movable pulley 212 is disposed on the movable pulley fixing frame 202 and located on the other side of the extension line of the slide rail 1 and symmetrically disposed with the third movable pulley 211. The second movable pulley 206 and the fourth movable pulley 212 are a group, which is called B. Group slip Wheel

a first guide bearing 207, located at a side above the last end of the slide;

a second guide bearing 208, located on the other side above the last end of the slide, symmetrically disposed with the first guide bearing 207; the first end of the string is fixed on the side of the extension line of the slide 1 of the movable pulley holder 202, The chord 4 is wound around the A set of pulleys and the A set of moving pulleys in turn, and then wound around the first guide bearing 207. The chord is wound around the first guide bearing 207 and then wound to the second guide bearing 208, and the chord is wound out of the second. The second end of the guide bearing 208 after bypassing the B set fixed pulley and the B set moving pulley in turn is fixed to the movable pulley fixing frame 202 on the other side of the slide extension line.

When using, when the string 4 is pulled to the firing mechanism with the upper string hook, the two tension springs 81 are stretched, the string 4 is buckled by the U-shaped string resisting block 7, the arrow is set in the slide rail, and the arrow tail is placed on the U The U-shaped groove 71 of the chord resisting block 7 abuts against the chord. When the trigger of the firing mechanism is pulled, the chord resisting block 7 releases the chord 4 that is buckled. Under the push of the chord 4, the arrow flies at a high speed toward the end of the chute. Going, at the same time, the two tension springs 81 are quickly reset under the return of the two tension springs 81.

The number of the above-mentioned tension springs may be one, or a plurality of the springs may be provided as needed. The number of pulleys of the A group may be one or more, and the plurality of fixed pulleys may be arranged at intervals. Similarly, the number of the group B fixed pulley, the group A moving pulley, and the B group moving pulley may be one or more, and the number of the group A fixed pulley, the B group fixed pulley, the A group dynamic pulley, and the B group movable pulley may be random combination. Example sixteen

Different from the fifteenth embodiment, the slide rail 1 is long, and the tension spring fixing frame 82 is partially fixed under the slide rail 1; see FIGS. 14 and 15, the position of the two tension springs 81 and the fixed pulley The positions of the fixing frame 201 and the movable pulley fixing frame 202 are different from those of the fifteenth embodiment. Specifically, the first ends of the two tension springs 81 are fixed on the hollow tension spring fixing frame 82 near the side of the firing mechanism 2, and the movable pulley fixing frame 202, slidingly disposed in the tension spring fixing frame 82, close to the firing mechanism 2;

The fixed pulley fixing frame 201 is fixed on the tension spring fixing frame 82 away from the side of the firing mechanism 2, and the movable pulley fixing frame 202 is located between the fixed pulley fixing frame 201 and the firing mechanism 2;

The second ends of the two tension springs 81 are connected to the movable pulley holder 202;

The two guide bearings are positioned at the end of the slide 1 and between the fixed pulley mount 201 and the movable pulley mount 202. The winding of the string is the same as that of the fifteenth embodiment.

The number of the above-mentioned tension springs may be one, or a plurality of the springs may be provided as needed. The number of pulleys of the A group may be one or more, and the plurality of fixed pulleys may be arranged at intervals. Similarly, the number of the group B fixed pulley, the group A moving pulley, and the B group moving pulley may be one or more, and the number of the group A fixed pulley, the B group fixed pulley, the A group dynamic pulley, and the B group movable pulley may be random combination. Example seventeen

Different from the first embodiment, the string power driving mechanism is a cylinder, and the cylinder includes a cylinder 91 and a sealing activity. a piston rod 92 disposed in the cylinder 91; the cylinder 91 is fixed under the slide 1, as shown in Figs. 16, 17; the pulley speed increasing mechanism defines a pulley holder 201 fixed to the cylinder block 91, close to the firing mechanism 2; the movable pulley holder 202, fixedly disposed on the piston rod 92 of the cylinder, away from the firing mechanism 2;

The fixed pulley holder 201 is provided with four fixed pulleys, respectively:

A set of fixed pulleys composed of a first fixed pulley 203 and a third fixed pulley 214 on the side of the cylinder 91, the first fixed pulley 203 and the third fixed pulley 214 are arranged side by side;

A set of fixed pulleys, a second fixed pulley 204 and a fourth fixed pulley 215, which are arranged by the second fixed pulley 204 and the fourth fixed pulley 215 on the other side of the cylinder 91, are arranged side by side;

The movable pulley fixing frame 202 is provided with four movable pulleys, which are respectively:

A set of pulleys, which are composed of a first movable pulley 205 and a third movable pulley 211, are disposed on the side of the cylinder 91, and the first movable pulley 205 and the third movable pulley 211 are arranged side by side;

A set of fixed pulleys, a second movable pulley 206 and a fourth movable pulley 212, which are arranged on the other side of the cylinder block 91, are arranged side by side;

a first guide bearing 208 disposed on the cylinder body, disposed near the end of the slide rail, and located at the slide guide line second guide bearing 209, disposed on the cylinder block and located at the slide extension line Side, symmetrically placed with the first guide bearing.

The winding of the string is the same as that of the fifteenth embodiment. Example 18

Different from the seventeenth embodiment, the number of the set A set pulley, the B set fixed pulley, the A set dynamic pulley and the B set movable pulley is one, and the winding of the string is the same as the second embodiment. Example 19

Different from the seventeenth embodiment, the number of the fixed pulleys of the group A and the fixed pulleys of the group B are all one, and the number of the movable pulleys of the group A and the group of the two groups of the pulleys are two, and the winding of the string is the same as that of the third embodiment. Example twenty

Different from the seventeenth embodiment, the position of the fixed pulley fixing frame and the movable pulley fixing frame, and the positions of the first guiding bearing and the second guiding bearing; the position of the fixed pulley fixing frame and the movable pulley fixing frame, and the first guiding bearing and The position of the second guide bearing is the same as that of the seventh embodiment. The winding of the string is the same as in the seventh embodiment.

The position of the two guide bearings is far from the firing mechanism, so that the length of the cylinder can be effectively utilized when the cylinder is compressed, so that the length of the crucible can be made shorter and more convenient to carry.

Claims

Rights request

1. A crossbow, including a slide (1), a firing mechanism (2) located at the head of the slide (1), and a string (4) that pushes the arrow (9); It is characterized by: It also includes:

A string power drive for tensioning the string (4) is provided at the end of the slide (1) along the length of the slide (1) or under the slide (1) and parallel to the length of the slide (1). institution;

A pulley speed-increasing mechanism is used to increase the driving speed of the string (4) in cooperation with the string power drive. The string (4) is wound around the pulley speed-increasing mechanism, and the string power driving mechanism, the pulley speed-increasing mechanism and the pulley speed-increasing mechanism are combined with the pulley speed-increasing mechanism. Road (1) together satisfies the overall "column" structure.

2. The crossbow according to claim 1, characterized in that the string power driving mechanism includes a compression spring (51) and a compression spring positioning tube (52), and the compression spring (51) is sleeved on the compression spring positioning tube. (52), the compression spring positioning tube (52) is fixed to the slideway (1) and is disposed along the length direction of the slideway (1), or the compression spring positioning tube (52) is entirely fixed to the slideway (1) The bottom is arranged parallel to the length direction of the slideway (1), or the compression spring positioning tube (52) is partially fixed under the slideway (1) and is arranged parallel to the length direction of the slideway (1).

3. The crossbow according to claim 2, characterized in that the pulley speed-increasing mechanism includes:

The string end fixing bracket (101) is fixed on the compression spring positioning tube (52);

The moving pulley holder (102, 202) is slidably installed on the compression spring positioning tube (52), and the first end of the compression spring (51) offsets the chord end holder (101), and the third end of the compression spring (51) The two ends are offset by the movable pulley fixed frame (102, 202);

The first movable pulley (103,205) is arranged on the movable pulley fixed frame (102,202) and is located on the compression spring positioning tube (52). The second movable pulley (104,206) is arranged on the movable pulley fixed frame (102,202) and is located on the compression spring positioning tube (52). The other side of the spring positioning tube (52) is arranged symmetrically with the first moving pulley (103, 205);

The first guide bearing (105, 207) is arranged on the compression spring positioning tube (52), is arranged close to the end of the slideway (1), and is located on one side of the extension line of the slideway (1) and is located on the chord end fixing frame ( 101) and the firing mechanism (2);

The second guide bearing (106,208) is arranged on the compression spring positioning tube (52) and is located on the other side of the extension line of the slideway (1), and is arranged symmetrically with the first guide bearing (105,207);

The first end of the string (4) is fixed on the string end fixing frame (101) and is located on one side of the compression spring positioning tube (52). The string (4) bypasses the first moving pulley (103, 205) and then winds to the first Guide bearing (105, 207), the string (4) winds out of the first guide bearing (105, 207) and then winds to the second guide bearing (106, 208), and the chord (4) winds out of the second guide bearing (106, 208) and then winds to The second movable pulley (104, 206), the second end of the string (4) after winding out of the second movable pulley (104, 206) is fixed on the chord end fixing frame (101) located on the other side of the positioning tube of the compression spring (51).

4. The crossbow according to claim 2, characterized in that the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed on the compression spring positioning tube (52), close to the firing mechanism (2);

The movable pulley holder (102, 202) is slidably arranged on the compression spring positioning tube (52), away from the firing mechanism (2), and the first end of the compression spring (51) offsets the fixed pulley holder (201), the The second end of the compression spring (51) and the moving pulley fixing frame (102,202)offset;

The fixed pulley set is arranged on the fixed pulley fixing frame (201) and has a set of fixed pulleys located on one side of the slideway (1) or the extension line of the slideway (1) and a set of fixed pulleys located on the slideway (1) or the slideway (1). ) Set B fixed pulley on the other side of the extension line;

The movable pulley set is arranged on the movable pulley fixed frame (102, 202) and has a set of A movable pulleys located on one side of the slideway (1) or the extension line of the slideway (1) and a set of A movable pulleys located on the other side of the slideway (1) or the extension line of the slideway (1). Group B movable pulleys on one side; Group A fixed pulleys and Group B fixed pulleys are arranged symmetrically; Group A movable pulleys and Group B movable pulleys are arranged symmetrically;

The first guide bearing (105, 207) is arranged on the compression spring positioning tube (52), higher than the slideway (1) or the extension line of the slideway (1), and is located at the end of the slideway (1) or the slideway (1) The side above the extension line is between the fixed pulley fixed frame (201) and the firing mechanism (2);

The second guide bearing (106, 208) is arranged on the compression spring positioning tube (52), higher than the slideway (1) or the extension line of the slideway (1), and is located at the end of the slideway (1) or the slideway (1) The other side above the extension line is arranged symmetrically with the first guide bearing (105, 207); the first end of the string (4) is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102,202) is located on the compression spring positioning tube ( 52), the string (4) winds around the fixed pulley A and the movable pulley A and then towards the first guide bearing (105, 207), and the string (4) winds out of the first guide bearing (105, 207). Winding to the second guide bearing (106, 208), the second end of the string (4) after winding out of the second guide bearing (106, 208) successively bypasses the set B fixed pulley and the set B movable pulley and is fixed on the movable pulley fixing frame (102, 202) Or the movable pulley fixing bracket (102, 202) is located on the other side of the slideway (1).

5. The crossbow according to claim 2, characterized in that the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed on the compression spring positioning tube (52), away from the firing mechanism (2);

The movable pulley holder (102, 202) is slidably installed on the compression spring positioning tube (52), close to the firing mechanism, so that the movable pulley holder (102, 202) is located between the fixed pulley holder (201) and the firing mechanism (2), and the The first end of the compression spring (51) offsets the fixed pulley fixed frame (201), and the second end of the compression spring (51) offsets the movable pulley fixed frame (102, 202); the fixed pulley set is arranged on the fixed pulley fixed frame. On the frame (201), there is a set of fixed pulleys located on one side of the slideway (1) or the extension line of the slideway (1) and a set of B fixed pulleys located on the other side of the slideway (1) or the extension line of the slideway (1). pulley;

The first guide bearing (105, 207) is arranged on the compression spring positioning tube (52), higher than the slideway (1) or the extension line of the slideway (1), and is located at the end of the slideway (1) or the slideway (1) The side above the extension line is close to the fixed pulley fixed frame (201), so that the fixed pulley fixed frame (201) is located between the first guide bearing (105, 207) and the firing mechanism (2);

The second guide bearing (106, 208) is arranged on the compression spring positioning tube (52), higher than the slideway (1) or the extension line of the slideway (1), and is located at the end of the slideway (1) or the slideway (1) The other side above the extension line is arranged symmetrically with the first guide bearing (105, 207); the first end of the string (4) is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102,202) is located on the compression spring positioning tube ( 52), the string (4) winds around the fixed pulley A and the movable pulley A and then towards the first guide bearing (105, 207), and the string (4) winds out of the first guide bearing (105, 207). towards the second guide bearing (106,208), the string (4) After winding out the second guide bearing (106, 208), the second end of the fixed pulley of group B and the movable pulley of group B is fixed on the movable pulley fixed frame (102, 202) or the movable pulley fixed frame (102, 202) is located on the slideway (1) the other side.

6. The crossbow according to claim 4 or 5, characterized in that: the number of fixed pulleys in the A group is N, and N is any natural number, and the number of the fixed pulleys in the B group is M, and M is any A natural number, the number of the A group of movable pulleys is X, X is any natural number, the number of the B group of movable pulleys is Y, and Y is any natural number.

7. The crossbow according to claim 1, characterized in that: the string power driving mechanism includes: a tension spring and a hollow tension spring fixed frame, the tension spring fixed frame is fixed at the end of the slideway (1) along the slideway (1) Set in the length direction, or the tension spring fixing frame is completely fixed under the slideway (1) and is set parallel to the length direction of the slideway (1), or part of the tension spring fixing frame is fixed under the slideway (1) Arranged parallel to the length direction of the slide (1), the first end of the tension spring is fixed on the tension spring fixed frame.

8. The crossbow according to claim 7, characterized in that: the number of the tension springs is one or more.

9. The crossbow according to claim 8, characterized in that the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed in the tension spring fixed frame, close to the firing mechanism (2) - side;

The moving pulley fixed frame (102, 202) is arranged in the tension spring fixed frame, away from the firing mechanism (2); the first end of the tension spring is fixed on the tension spring fixed frame on the side away from the firing mechanism (2), and the tension spring The second end of the spring is connected to the movable pulley fixed frame (102, 202);

The fixed pulley set is arranged on the fixed pulley fixing frame (201), and has a set A fixed pulley located on one side of the slideway (1) or the extension line of the slideway (1) and a set of fixed pulleys located on the slideway (1) or the extension line of the slideway (1). B set of fixed pulleys on the other side of the line;

The first guide bearing (105,207) is located above the slideway (1) or on one side above the extension line of the slideway (1); the second guide bearing (106,208) is located above the slideway (1) or on one side of the slideway (1) (1) The other side above the extension line is arranged symmetrically with the first guide bearing (105, 207);

The first end of the string (4) is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102, 202) is located on one side of the slideway (1), and the string (4) goes around the fixed pulleys of group A and The moving pulleys of group A then wind around the first guide bearing (105,207). The string (4) winds out of the first guide bearing (105,207) and then winds around the second guide bearing (106,208). The chord (4) winds out of the second guide bearing (105,207). The second end of the guide bearing (106, 208) bypasses the fixed pulley of Group B and the movable pulley of Group B and is fixed on the movable pulley fixing frame.

(102,202) or the moving pulley fixing bracket (102,202) is located on the other side of the slideway (1).

10. The crossbow according to claim 8, characterized in that the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed in the tension spring fixed frame, away from the firing mechanism (2) - side;

The moving pulley fixed frame (102, 202) is arranged in the tension spring fixed frame, close to the firing mechanism (2); the first end of the tension spring is fixed on the tension spring fixed frame close to the firing mechanism (2), so The second end of the tension spring is connected to the movable pulley fixed frame (102, 202); The fixed pulley set is arranged on the fixed pulley fixed frame (201) and has a set of fixed pulleys located on one side of the slideway (1) or the extension line of the slideway (1) and a set of fixed pulleys located on the slideway (1) or the extension line of the slideway (1). Group B fixed pulley on the other side of the line;

The first guide bearing (105,207) is located on the side above the slideway (1) or the extension line of the slideway (1);

The second guide bearing (106,208) is located on the other side above the slideway (1) or the extension line of the slideway (1), and is arranged symmetrically with the first guide bearing (105,207);

The first end of the string (4) is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102, 202) is located on one side of the slideway (1), and the string (4) goes around the fixed pulleys of group A and The moving pulleys of group A then wind around the first guide bearing (105,207). The string (4) winds out of the first guide bearing (105,207) and then winds around the second guide bearing (106,208). The chord (4) winds out of the second guide bearing (105,207). The second end of the guide bearing (106,208) bypasses the fixed pulley of group B and the movable pulley of group B in turn and is fixed on the movable pulley fixing frame (102,202) or the movable pulley fixing frame (102,202) is located on the other side of the slideway (1).

11. The crossbow according to claim 1, characterized in that the string power driving mechanism includes: a first compression spring (61), a second compression spring (62), a first compression spring positioning post (63), a second compression spring Compression spring (62) positioning post and positioning tube, the first compression spring (61) is sleeved on the first compression spring positioning column (63), and the second compression spring (62) is sleeved on the second compression spring (63). On the spring positioning post (64), the positioning tube is fixed on the end of the slideway (1) and arranged along the length direction of the slideway (1), or the positioning tube is all fixed on the bottom of the slideway (1) and the slideway (1) ) are arranged parallel to the length direction, or the positioning tube is partially fixed under the slideway (1) and arranged parallel to the length direction of the slideway (1); the first compression spring positioning column (63), the second compression spring positioning column (64) Located on both sides of the positioning tube.

12. The crossbow according to claim U, characterized in that the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed on the positioning tube, close to the firing mechanism (2) or away from the firing mechanism (2);

The moving pulley fixing bracket (102,202) is slidably installed on the positioning tube, corresponding to the fixed pulley fixing bracket (201), away from the firing mechanism (2) or close to the firing mechanism (2);

The first end of the first compression spring positioning column (63) is fixed on the fixed pulley fixing frame (201), and the second end of the first compression spring positioning column (63) is movably penetrated on the movable pulley fixing frame (102, 202). , the first compression spring (61) is located between the fixed pulley fixing frame (201) and the movable pulley fixing frame (102, 202), and the first end of the second compression spring positioning post (64) is also fixed on the fixed pulley fixing frame (201). ), the second end of the second compression spring positioning post (64) is movably installed on the movable pulley fixing frame (102, 202), and the second compression spring (62) is located on the fixed pulley fixing frame (201) and the movable pulley fixing frame (102, 202);

The fixed pulley set is arranged on the fixed pulley fixed frame (201) and has a set of fixed pulleys located on one side of the positioning pipe and a set of B fixed pulleys located on the other side of the positioning pipe;

The movable pulley set is arranged on the movable pulley fixed frame (102, 202) and has a set of A movable pulleys located on one side of the positioning tube and a set of B movable pulleys located on the other side of the positioning tube. The set A fixed pulleys and the set B fixed pulleys are symmetrically arranged. The group movable pulley and the group B movable pulley are arranged symmetrically;

The first guide bearing (105, 207) is arranged on the fixed pulley fixed frame (201) or the positioning tube, higher than the slideway (1) or the extension line of slideway (1), located above the slideway (1) or on the side above the extension line of slideway (1);

The second guide bearing (106, 208) is arranged on the movable pulley fixed frame (102, 202) or the positioning tube, is higher than the slideway (1) or the extension line of the slideway (1), and is located above the slideway (1) or on the slideway (1). The other side above the extension line of the track (1) is symmetrically arranged with the second guide bearing (105, 207);

The first end of the string (4) is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102, 202) is located on one side of the positioning tube. The string (4) bypasses the A group of movable pulleys and the A group of fixed pulleys in sequence. Then, it winds to the first guide bearing (105, 207). The chord (4) winds out of the first guide bearing (105, 207) and then winds to the second guide bearing (106, 208). The chord (4) winds out of the second guide bearing (105, 207). 106,208) and then the second end after bypassing the movable pulley of group B and the fixed pulley of group B is fixed on the fixed pulley fixing frame (201) or the movable pulley fixing frame (102,202) is located on the other side of the positioning tube.

13. The crossbow according to claim 1, characterized in that: the chord power driving mechanism is a cylinder, and the cylinder includes a cylinder (91) and a piston rod (92) that is movable and sealed in the cylinder (91); It is fixed at the end of the slideway (1) or partially fixed under the slideway (1).

14. The crossbow according to claim 13, characterized in that: the pulley speed-increasing mechanism includes:

Fixed pulley fixed frame (201), fixed on the cylinder body (91) of the cylinder, close to the firing mechanism (2);

The moving pulley fixing bracket (102,202) is fixedly installed on the piston rod (92) of the cylinder, away from the firing mechanism (2);

The fixed pulley set is arranged on the fixed pulley fixed frame (201) and has a set of fixed pulleys located on one side of the cylinder (91) and a set of B fixed pulleys on the other side of the cylinder (91);

The movable pulley set is arranged on the movable pulley fixed frame (102, 202) and has a set of A movable pulleys on one side of the piston rod (92) and a set of B movable pulleys on the other side of the piston rod (92). Set A fixed pulleys and set B fixed pulleys. The pulleys are set symmetrically, and the movable pulleys in group A and the movable pulleys in group B are set symmetrically;

The first guide bearing (105, 207) is provided on the cylinder (91), is provided close to the end of the slideway (1), and is located on one side of the extension line of the slideway (1);

The second guide bearing (106,208) is arranged on the cylinder (91) and is located on the other side of the extension line of the slideway (1), and is arranged symmetrically with the first guide bearing (105,207);

The first end of the string (4) is fixed on the movable pulley fixing frame (102, 202) or the fixed pulley fixing frame (201) is located on one side of the cylinder (91), and the string (4) goes around the A group of fixed pulleys and The moving pulleys of group A then wind around the first guide bearing (105,207). The string (4) winds out of the first guide bearing (105,207) and then winds around the second guide bearing (106,208). The chord (4) winds out of the second guide bearing (105,207). The second end of the guide bearing (106, 208) sequentially bypasses the fixed pulley of group B and the movable pulley of group B and is fixed to the movable pulley fixing frame (102, 202) or the fixed pulley fixing frame (201) located on the other side of the cylinder (91).

15. The crossbow according to any one of claims 1 to 5 and 7 to 14, characterized in that: an elastic pressing piece (3) for clamping the arrow body is provided above the front of the slide (1).

16. The crossbow according to any one of claims 1 to 5 and 7 to 14, characterized in that: a U-shaped string blocking block for holding the string (4) is provided at the beginning of the slideway (1) (7), the U-shaped groove (71) of the U-shaped string blocking block (7) can just accommodate the arrow tail. The string blocking block is connected with the firing mechanism (2) and can be driven by the firing mechanism (2) to release the arrow. Buckled string.