CN210922336U

CN210922336U - Automatic centripetal slingshot

Info

Publication number: CN210922336U
Application number: CN201922028930.9U
Authority: CN
Inventors: 甘德芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-03
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an automatic centripetal catapult belongs to catapult technical field, including catapult support and rubber band group of Y shape structure, Y shape structure includes interconnect handle structure and V-arrangement branch, still sets up left bow door and right bow door at V-arrangement branch top including the symmetry, links to each other through bow door connecting rod between left bow door and the right bow door, and the both sides or the symmetry of fixing at bow door connecting rod are fixed on left bow door and right bow door to the both ends symmetry of rubber band group. The utility model discloses about the bow door can swing and keep parallel with the tensile direction of rubber band along with the change of the tensile direction of rubber band, use about when the shooter uses the catapult door just can carry out accurate aiming for the reference to reach the purpose that promotes the catapult precision.

Description

Automatic centripetal slingshot

Technical Field

The utility model belongs to the technical field of the catapult, a automatic centripetal catapult is related to.

Background

The catapult is a game tool, is generally made of branches of trees and is in a Y shape, two ends of the catapult are tied with rubber bands, and the middle section of each rubber band is tied with a leather block wrapped with the pellet. The larger the tension of the rubber band is, the larger the power of the slingshot is. Slingshots can be divided into bow-piece slingshots and rubber band slingshots according to the shooting mechanism.

The bow piece type slingshot has the most original bow-shaped slingshot and a slingshot crossbow. The rubber band type slingshot can be divided into a traditional slingshot and a modern slingshot, and the division principle is completely divided according to the existence of an aiming device and a wrist support labor-saving device.

Because traditional rubber band formula catapult does not have the fixed reference of aiming, shooter can only carry out approximate aiming according to self experience when using traditional catapult, and the shooting precision can't guarantee.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to solve the problems existing in the prior art, the utility model provides an automatic centripetal slingshot, not only simple structure has promoted the shooting precision of slingshot moreover.

The technical scheme is as follows: in order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides an automatic centripetal catapult, includes catapult support and the rubber band group of Y shape structure, Y shape structure includes interconnect handle structure and V-arrangement branch, still including symmetry setting up left bow door and right bow door at V-arrangement branch top, left bow door and right bow door between link to each other through the bow door connecting rod, the both ends symmetry of rubber band group fix the both sides at the bow door connecting rod or the symmetry is fixed on left bow door and right bow door.

Furthermore, the top of the V-shaped branch is an outer spherical surface which is symmetrically arranged; the front ends of the left bow door and the right bow door are respectively provided with an inner spherical surface, and the inner spherical surfaces are in universal connection with the outer spherical surfaces on the corresponding sides.

Further, cylindrical holes are formed in the rear ends of the left bow door and the right bow door; and cylindrical pins matched with the cylindrical holes are symmetrically arranged on the arched door connecting rod.

Furthermore, the left bow door and the right bow door are the same in length, and the distance between the inner spherical surface and the cylindrical hole on the corresponding side is the same.

Further, the distance between the axes of the cylindrical pins is equal to the distance between the spherical centers of the outer spherical surfaces.

Furthermore, the rubber band group comprises a rubber band and a rubber pocket; the rubber band is an elastic rubber band and is fixedly connected to two ends of the leather pocket and has the same length; the leather pocket is of an oval structure.

Furthermore, when two ends of the rubber band group are fixed on the arched door connecting rod, two ends of the arched door connecting rod are provided with fixed ends for fixing the rubber band.

Furthermore, when the two ends of the rubber band group are fixed on the left bow door and the right bow door, the fixed positions of the rubber bands are bilaterally symmetrical and are positioned at the rear ends of the left bow door and the right bow door.

The left bow door and the right bow door are respectively and universally connected to the slingshot bracket; cylindrical pins at the left end and the right end of the bow door connecting rod are respectively rotatably connected to cylindrical holes at the rear ends of the left bow door and the right bow door, so that the slingshot bracket, the left bow door, the right bow door and the bow door connecting rod form a parallelogram connecting rod mechanism, and the left bow door and the right bow door can horizontally swing around the spherical centers of outer spherical surfaces which are respectively and universally connected with the slingshot bracket; and because the left bow door, the right bow door and the slingshot bracket are connected in a universal mode, the left bow door, the right bow door and the bow door connecting rod can integrally swing up and down around the connecting line of the spherical centers of the two outer spherical surfaces of the slingshot bracket when swinging left and right to any state, so that the left bow door and the right bow door can parallelly swing at any spatial angle behind the slingshot bracket.

Has the advantages that: compared with the prior art, the automatic centripetal slingshot adopts the design that the left bow door and the right bow door are respectively and universally connected with the slingshot bracket, and the left bow door and the right bow door are both rotatably connected on the same bow door connecting rod; when the hand is clamped the tensile rubber band of leather pocket and is aimed, no matter how the leather pocket removes for the catapult support, about the bow door can swing and keep parallel with the tensile direction of rubber band along with the change of the tensile direction of rubber band to reach automatic centripetal effect, about so the bow door just can regard as fixed aiming reference, about with when the shooter uses the catapult the bow door just can carry out accurate aiming for referring to, thereby reach the purpose that promotes the catapult precision.

Drawings

FIG. 1 is a slingshot overall azimuth view;

FIG. 2 is a top view of the slingshot rubber band set rubber band secured to the left and right bow doors;

FIG. 3 is a schematic view of the rubber band of the slingshot rubber band set being fixed to the connecting rod of the bow door;

FIG. 4 is an exploded view of the slingshot;

the reference signs are: 1-slingshot bracket, 2-left bow door, 3-right bow door, 4-bow door connecting rod, 5-rubber band group, 51-rubber band, 52-rubber pocket, 6-external spherical surface, 7-internal spherical surface, 8-cylindrical hole, 9-cylindrical pin and 10-fixed end.

Detailed Description

The structure and performance of the present invention will be further explained with reference to the accompanying drawings.

It is understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, and that modifications to various equivalent forms of the present invention will occur to those skilled in the art upon reading the present disclosure and are intended to be included within the scope of the appended claims.

The utility model provides an automatic centripetal slingshot, includes catapult support 1 and rubber band group 5 of Y shape structure, and Y shape structure includes interconnect handle structure and V-arrangement branch, its characterized in that: the left bow door 2 and the right bow door 3 are symmetrically arranged at the tops of the V-shaped branches, the left bow door 2 and the right bow door 3 are connected through a bow door connecting rod 4, and two ends of the rubber band group 5 are symmetrically fixed on two sides of the bow door connecting rod 4 or symmetrically fixed on the left bow door 2 and the right bow door 3.

The top of the V-shaped branch is provided with an outer spherical surface 6 which is symmetrically arranged; the front ends of the left bow door 2 and the right bow door 3 are respectively provided with an inner spherical surface 7, and the inner spherical surfaces 7 are in universal connection with outer spherical surfaces 6 on the corresponding sides.

The rear ends of the left bow door 2 and the right bow door 3 are respectively provided with a cylindrical hole 8; cylindrical pins 9 matched with the cylindrical holes 8 are symmetrically arranged on the bow door connecting rod 4.

The left bow door 2 and the right bow door 3 are the same in length, and the distance between the inner spherical surface 7 and the cylindrical hole 8 on the corresponding side is the same.

The distance between the axes of the cylindrical pins 9 is equal to the distance between the spherical centers of the outer spherical surfaces 6.

The rubber band group 5 comprises a rubber band 51 and a rubber pocket 52; the rubber band 51 is an elastic rubber band and is fixedly connected with the two ends of the leather pocket 52 and has the same length; the leather pocket 52 is of an oval configuration.

When both ends of the rubber band group 5 are fixed to the bow link 4, the fixed ends 10 for fixing the rubber band 51 are provided at both ends of the bow link 4.

When both ends of the rubber band group 5 are fixed on the left and

right bow doors

2 and 3, the fixing positions of the rubber bands 51 are bilaterally symmetrical and are positioned at the rear ends of the left and

right bow doors

2 and 3.

Examples

As shown in fig. 1-4, an automatic centripetal slingshot comprises a slingshot support 1, a left bow door 2 and a right bow door 3, wherein the slingshot support 1 is of a Y-shaped structure, the lower half part of the Y-shaped structure is a handle structure, and the tops of two branches of the upper half part of the Y-shaped structure are both spherical outside surfaces 6.

The left bow door 2 and the right bow door 3 are symmetrically arranged, the front ends of the left bow door 2 and the right bow door 3 are respectively provided with an inner spherical surface 7 and are in universal connection with outer spherical surfaces 6 at the tops of the corresponding catapult supports 1, the rear ends of the left bow door 2 and the right bow door 3 are respectively provided with a cylindrical hole 8, and the axial distances from the spherical centers of the inner spherical surfaces 7 at the front ends of the left bow door 2 and the right bow door 3 to the cylindrical holes 8 at the rear ends of the left bow door 2 and the right bow door 3 are the same.

The left end and the right end of the bow door connecting rod 4 are symmetrically provided with cylindrical pins 9 which are parallel to each other, and the distance between the axes of the two cylindrical pins 9 is equal to the distance between the spherical centers of the outer spherical surfaces 6; cylindrical pins 9 at two ends of the bow door connecting rod 4 are respectively and rotatably connected in cylindrical holes 8 at the rear ends of the left bow door 2 and the right bow door 3; the two ends of the bow connecting rod 4 are also provided with fixed ends 10 for fixing rubber bands 51.

The rubber band group 5 comprises a rubber band 51 and a rubber pocket 52; the rubber band 51 is an elastic rubber band and is fixedly connected with the two ends of the leather pocket 52 and has the same length; the leather pocket 52 is a long oval structure and is made of leather with good toughness and strength; the rubber band 51 is respectively fixedly connected with the rear ends of the left bow door 2 and the right bow door 3 or two ends of the bow door connecting rod 4, and the fixed positions are bilaterally symmetrical and are positioned behind or on two sides of the point from the sphere center of the inner spherical surface 7 at the front end of each bow door to the nearest axis of the cylindrical hole 8 at the rear end of each bow door.

The left bow door 2 and the right bow door 3 are respectively and universally connected to the slingshot bracket 1; cylindrical pins 9 at the left end and the right end of a bow door connecting rod 4 are respectively rotatably connected to cylindrical holes 8 at the rear ends of a left bow door 2 and a right bow door 3, so that the slingshot bracket 1, the left bow door 2, the right bow door 3 and the bow door connecting rod 4 form a parallelogram connecting rod mechanism, and the left bow door 2 and the right bow door 3 can swing in parallel left and right around the spherical centers of outer spherical surfaces 6 which are respectively and universally connected with the slingshot bracket 1; and because the left bow door 2, the right bow door 3 and the slingshot bracket 1 are connected in a universal way, the left bow door 2, the right bow door 3 and the bow door connecting rod 4 can integrally swing up and down around the connecting line of the spherical centers of the two outer spherical surfaces 6 of the slingshot bracket 1 when swinging left and right to any state, so that the left bow door 2 and the right bow door 3 can parallelly swing at any spatial angle behind the slingshot bracket 1.

As shown in FIG. 3, when the rubber band 5 is fixedly connected to the pantograph door connecting rod 4, the fixing positions are symmetrically distributed in the left and right directions and in the plane of the simplified parallelogram linkage mechanism of the slingshot when the adjacent connecting rods of the parallelogram linkage mechanism of the simplified pantograph relative to the whole slingshot are in the mutually perpendicular initial state, because the left and right pantograph doors and the pantograph door connecting rods 4 can swing up and down around the connecting line of the two spherical centers of the two outer spheres of the slingshot bracket 1, the left and right pantograph doors and the pantograph door connecting rods 4 can be integrally simplified into one connecting rod when seen from the side, one end of the connecting rod can be rotatably connected to the slingshot bracket 1, the other end of the connecting rod is fixedly connected with the rubber band 51, because the rubber band 51 is flexible and bendable, the connecting mode of the connecting rod and the connecting rod can be approximately simplified into the rotatable connection, so that when the rubber band 51 is stretched due to the self-force characteristic, the connecting rod can, therefore, the tension of the rubber band group 5 is always on the plane of the parallelogram linkage mechanism consisting of the slingshot bracket 1, the left and right bow doors and the bow door connecting rod 4; when the leather bag 52 is clamped by a hand to stretch the rubber band 51, the whole slingshot gradually reaches a balanced state under the action of the tension of the rubber band 51, and because the lengths of the rubber bands 51 of the rubber band group 5 are the same, the tension of the rubber bands 51 at two ends of the rubber bag 52 is approximately equal when the rubber band 51 is stretched to the limit, and because the slingshot structure can be simplified into a parallelogram link mechanism, in order to achieve a force balanced state under the condition of such a stress, the resultant force of the rubber bands 51 must be always parallel to the connecting line of the shortest distance point of the spherical center of the outer spherical surface 6 at the front end of the left bow door 2 and the right bow door 3 and the axis of the cylindrical hole 8 at the rear end of each of the left bow door 2 and the right bow door 3, namely the connecting rod corresponding to the left bow door and the right bow door (2 and.

As shown in fig. 2, when the rubber band set 5 is fixedly connected to the left and right bow doors, the fixing positions are symmetrically distributed left and right with respect to the entire slingshot in the initial state and are located in the plane of the parallelogram linkage mechanism after the slingshot is simplified; when the user clamps the leather pocket 52 and stretches the rubber band 51, the whole slingshot gradually reaches a balanced state under the action of the tensile force of the rubber band 51, and because the lengths of the rubber bands 51 on the two sides are the same, the tensile forces of the rubber bands 51 at the two ends of the rubber pocket 52 are approximately equal when the rubber band 51 is stretched to the limit, and because the slingshot structure can be simplified into a parallelogram link mechanism, and the tensile force of the rubber band 51 is always in the plane of the four-link mechanism, in order to achieve a balanced state under the condition of such stress, the direction of the tensile force of the rubber band 51 acting on the left and right bow doors is inevitably equal to the included angle of the central axes of the respective bow doors, the tensile force of the rubber band acting on the left and right bow doors faces the right rear direction, and the tensile force of the right bow door 3 faces the left rear direction, so that the tensile force of the rubber band 51 on the left and right bow doors is always parallel to.

Because the catapult throws the shot in the direction of the resultant force direction of the rubber band 51 of the rubber band group 5 in theory, no matter how the leather pocket 52 is clamped by a hand, the left bow door 2 and the right bow door 3 of the catapult can achieve an automatic centripetal effect, and if the left bow door 2 and the right bow door 3 are used as the reference for aiming, the shooting precision of the catapult can be greatly improved.

Claims

1. The utility model provides an automatic centripetal slingshot, includes catapult support (1) and rubber band group (5) of Y shape structure, and Y shape structure includes interconnect handle structure and V-arrangement branch, its characterized in that: the left bow door (2) and the right bow door (3) are symmetrically arranged at the top of the V-shaped branch, the left bow door (2) and the right bow door (3) are connected through a bow door connecting rod (4), and two ends of the rubber band group (5) are symmetrically fixed on two sides of the bow door connecting rod (4) or symmetrically fixed on the left bow door (2) and the right bow door (3).

2. An automatic centripetal slingshot according to claim 1, wherein: the top of the V-shaped branch is an outer spherical surface (6) which is symmetrically arranged; the front ends of the left bow door (2) and the right bow door (3) are respectively provided with an inner spherical surface (7), and the inner spherical surfaces (7) are in universal connection with the outer spherical surfaces (6) on the corresponding sides.

3. An automatic centripetal slingshot according to claim 2, wherein: the rear ends of the left bow door (2) and the right bow door (3) are respectively provided with a cylindrical hole (8); cylindrical pins (9) matched with the cylindrical holes (8) are symmetrically arranged on the arched door connecting rod (4).

4. An automatic centripetal slingshot according to claim 3, wherein: the left bow door (2) and the right bow door (3) are the same in length, and the distance between the inner spherical surface (7) and the cylindrical hole (8) on the corresponding side is equal.

5. An automatic centripetal slingshot according to claim 3, wherein: the distance between the axes of the cylindrical pins (9) is equal to the distance between the spherical centers of the outer spherical surfaces (6).

6. An automatic centripetal slingshot according to claim 1, wherein: the rubber band group (5) comprises a rubber band (51) and a rubber pocket (52); the rubber band (51) is an elastic rubber band, is fixedly connected to two ends of the leather pocket (52) and has the same length; the leather pocket (52) is of an oval structure.

7. An automatic centripetal slingshot according to claim 6, wherein: when the two ends of the rubber band group (5) are fixed on the arched door connecting rod (4), the two ends of the arched door connecting rod (4) are provided with fixed ends (10) for fixing the rubber band (51).

8. An automatic centripetal slingshot according to claim 6, wherein: when the two ends of the rubber band group (5) are fixed on the left bow door (2) and the right bow door (3), the fixed positions of the rubber bands (51) are bilaterally symmetrical and are positioned at the rear ends of the left bow door (2) and the right bow door (3).