CN106943755B

CN106943755B - Bullet shooting mechanism

Info

Publication number: CN106943755B
Application number: CN201710208751.6A
Authority: CN
Inventors: 周迅; 李�杰
Original assignee: Nanjing Chusike Technology Co ltd
Current assignee: Nanjing Chu Shi Ke Technology Co., Ltd.
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2021-02-26
Anticipated expiration: 2037-03-31
Also published as: CN106943755A

Abstract

The invention provides a bullet shooting mechanism which comprises more than two flywheels, wherein the outer walls of the flywheels are concave surfaces, the concave surfaces of the outer walls of all the flywheels are matched with each other to form a shooting area for exciting bullets, and the flywheels are driven by a motor. The flywheel comprises a wide opening end and a narrow opening end, the diameter of the flywheel is gradually increased from the narrow opening end to the wide opening end, and the outer wall of the flywheel from the narrow opening end to the wide opening end is in an inwards concave arc shape. The two groups of flywheels comprise a first flywheel and a second flywheel which are identical in structure, the first flywheel and the second flywheel are arranged in parallel, a wide opening end of the first flywheel and a narrow opening end of the second flywheel are arranged on one side, the narrow opening end of the first flywheel and the wide opening end of the second flywheel are arranged on one side, and an area between the inward concave arc of the first flywheel and the inward concave arc of the second flywheel is an emission area.

Description

Bullet shooting mechanism

Technical Field

The invention relates to the field of toy guns, in particular to a bullet shooting mechanism.

Background

In the known technology, the common commercial soft bullet toy guns can be divided into three types according to the launching method: one is pneumatic emission, namely compressed air is used as power, and the pneumatic emission comprises an emission mechanism of a spring-driven cylinder and an emission mechanism of a charging, discharging and storing device for releasing the compressed air; the second type is an emission mechanism using an elastic energy storage device, and comprises various emission mechanisms using a spring, a rubber band, an elastic bow arm and the like as the elastic energy storage device; the third type is a launching mechanism using an inertia mechanism and relying on friction force, which is mainly a symmetrical type positive flywheel set (symmetrical refers to a flywheel set formed by two flywheels with completely identical structural shapes and sizes, and the positive flywheel refers to a symmetrical type positive flywheel set for short, wherein an axisymmetric flywheel is formed by three orthogonal axes passing through a mass center and a centroid). The contact surface of the single flywheel and the soft bullet in the positive flywheel set is provided with a plane and a concave surface. In contrast, the contact area of the concave flywheel and the soft bullet is larger than that of the plane flywheel, so that the kinetic energy transfer efficiency is higher.

The soft bullet toy gun with the symmetrical positive flywheel set launching mechanism is used for launching soft toys made of non-expandable sponge materials, takes a toy motor as power, takes the same-direction friction force generated on the surfaces of sponge bullets entering a flywheel set when a flywheel rotates as a launching mechanism, and adopts a mode that the motors are oppositely arranged at the same side. Only one Nerf brand toy gun under the American sea treasure flag adopts the mode of the same-side oblique contraposition of the symmetrical positive flywheel set motors. In addition, the arrangement mode that the opposite sides of the motor are oppositely arranged is not seen.

The symmetrical positive flywheel sets and the motor same-side positive contraposition mode are adopted, the soft toy bullet can only move along the launching direction, the soft toy bullet cannot generate the self-spinning effect along the axis of the advancing direction, the trajectory is unstable, the accuracy is greatly reduced, and the soft toy bullet is easy to shift and roll in an uncertain direction in the flying process.

The symmetrical positive flywheel set motors are obliquely arranged on the same side, so that the toy soft bomb can simultaneously generate linear motion along the launching direction and self-spinning motion taking the launching direction as an axis, only a planar flywheel can be used, and a concave flywheel cannot be used, so that the contact area between the flywheel and the toy soft bomb is small, the friction force is insufficient, and the kinetic energy transfer efficiency is low. Meanwhile, the motor and the flywheel set are obliquely arranged, so that higher difficulty is brought to the design and manufacture of a die and the production and installation of the toy, and the requirement on dimensional tolerance is stricter.

In addition, in the scheme that the motors of the partially symmetrical positive flywheel sets are arranged in the same side in a positive opposite mode, inclined stripes are etched on the surfaces of the flywheels, or a thin-wall plastic tube with spiral rifling is used as a gun barrel, so that the bullet spinning effect is improved. The former has a weak spinning effect, is far from the same-side oblique opposite mode of a symmetrical positive flywheel set motor, and the latter has almost no effect because the diameter of a gun barrel of the soft toy bullet gun is far larger than that of the soft toy bullet, is non-airtight and has no chamber pressure, and the soft toy bullet cannot contact all rifling lines in the gun barrel simultaneously.

Through market research, literature and patent retrieval, no launching mechanism which has other shapes except a symmetrical positive flywheel set and is provided with motors in opposite side opposite arrangement so that the soft toy ball can simultaneously generate linear motion along a launching direction and a spinning motion effect taking the launching direction as an axis is found at present.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the technical problem of providing a bullet shooting mechanism aiming at the defects of the prior art.

In order to solve the technical problem, the invention provides a bullet shooting mechanism which comprises more than two groups of flywheels, wherein the outer walls of the flywheels are concave surfaces, the concave surfaces of the outer walls of all the flywheels are mutually matched to form a shooting area for exciting bullets, and the flywheels are driven by a motor.

In the invention, the flywheel comprises a wide opening end and a narrow opening end, the diameter of the flywheel is gradually increased from the narrow opening end to the wide opening end, and the outer wall of the flywheel from the narrow opening end to the wide opening end is in an inwards concave arc shape.

The two groups of flywheels comprise a first flywheel and a second flywheel which are identical in structure, the first flywheel and the second flywheel are arranged in parallel, a wide opening end of the first flywheel and a narrow opening end of the second flywheel are arranged on one side, the narrow opening end of the first flywheel and the wide opening end of the second flywheel are arranged on one side, and an area between the concave arc of the first flywheel and the concave arc of the second flywheel is an emission area. The first flywheel and the second flywheel are arranged in parallel, namely the central axes of the first flywheel and the second flywheel are parallel.

In the invention, the first flywheel and the second flywheel are driven by the motor, and the motor is arranged in the flywheel.

In the invention, the bullet shooting mechanism is characterized in that the first flywheel and the second flywheel are opposite in rotation direction.

In the invention, the wide-mouth end of the flywheel is of an open structure.

In the invention, the gravity centers of the flywheel and the motor are positioned in the center of the emission area.

In the invention, the center lines of the first flywheel and the second flywheel are parallel.

In the invention, the flywheels comprise a third flywheel and a fourth flywheel which are different in structure, the third flywheel comprises a third flywheel wide-mouth end and a third flywheel narrow-mouth end, the fourth flywheel comprises a fourth flywheel wide-mouth end and a fourth flywheel narrow-mouth end, the diameters from the third flywheel narrow-mouth end to the third flywheel wide-mouth end are increased progressively, the diameters from the fourth flywheel narrow-mouth end to the wide-mouth end are increased progressively, the third flywheel and the fourth flywheel are arranged in parallel, and an area between the concave circular arcs of the third flywheel and the fourth flywheel is an emission area.

In the invention, three flywheels are arranged in sequence, the central shafts of the three flywheels are on the same plane, the central shafts of the three flywheels form a regular triangle, the three flywheels have the same rotation direction, and the area between the outer walls of the three flywheels is an emission area.

In the invention, the motor flywheel devices are four groups, and the four groups of motor flywheel devices are arranged in a square shape.

In the invention, the invention is particularly suitable for the toy soft bullet gun.

Has the advantages that: the invention has the functions of forward launching of the toy soft bullet and self-spinning by taking the launching direction as an axis, can strengthen the trajectory constraint in the contact acceleration process of the soft bullet and the flywheel, ensures that the trajectory of the soft bullet is more stable, simultaneously does not need to design a special flywheel bin and a gun barrel, and has simple structure.

Drawings

The foregoing and other advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic view of example 1;

FIG. 2 is a schematic illustration of bullet firing of example 1;

FIG. 3a is a front view of the flywheel according to embodiment 1;

FIG. 3b is a right side view of the flywheel according to embodiment 1;

FIG. 3c is a plan view of the flywheel according to embodiment 1;

FIG. 4 is a schematic view of example 2;

FIG. 5 is a schematic view of a flywheel according to embodiment 3;

fig. 6 is a schematic emission diagram of embodiment 3.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 3b, embodiment 1 discloses a symmetrical oblique frustum flywheel set, which includes two thin-wall

hollow flywheels

1 and 7 having the same structure, shape and size, each flywheel includes an outer wall 2, a motor 3, a narrow-mouth end 4, a wide-mouth end 5, a launch area 6 and a bullet 8, and each flywheel is provided with a motor shaft mounting hole.

The section of the single flywheel, which is vertical to the X axis, is in the shape of a truncated pyramid. The contact part of the surface of the flywheel and the soft toy ball is a regular arc surface so as to increase the contact area of the flywheel and the soft toy ball and improve the kinetic energy transfer efficiency. The junction of the arc surface and the top of the frustum pyramid in the section is tangent to the parallel line of the horizontal flywheel axis (the parallel line of the X axis). The flywheel is provided with transverse patterns which are positioned on the same plane with a flywheel motor shaft.

The symmetrical oblique frustum flywheel can be made of plastic or light alloy material. If flexible materials such as plastics are adopted, the motor shaft and the flexible materials are fixed in an extrusion insertion mode, the diameter of the mounting hole is slightly smaller than the shaft diameter of the motor shaft, and the motor shaft is fixed by means of insertion type tight extrusion. If light alloy is adopted, the motor shaft and the mounting hole are fixed by adopting an inner hexagonal headless screw, the diameter of the mounting hole is equal to or slightly larger than that of the motor shaft, a screw hole is reserved in the neck, and the motor shaft is locked by the inner hexagonal headless screw to be fixed.

The sizes of all parts of the flywheel set can be determined according to different proportions according to the material used for manufacturing, the motor load required to be achieved and other parameters.

In addition, for the soft bullet gun of the toy without a flywheel bin or a gun barrel, the soft bullet is in a non-transverse constraint state, partial friction kinetic energy can be properly lost, the scheme that the joint of the flywheel surface and the top of the frustum pyramid is tangent to the parallel line of the X axis is not needed, and the design that the included angle between the cambered surface of the flywheel and the external normal line of the top of the frustum pyramid is smaller than 90 degrees is adopted.

Specifically, the function of the present embodiment is implemented as shown in fig. 1: when the motor flywheel device is used, the motor flywheel device is arranged in a mode of opposite side facing, and can be vertically arranged in parallel up and down or horizontally arranged in parallel left and right. The two flywheels of the flywheel set rotate in different directions, and the directions of the two flywheels all point to the launching direction of the soft bullet of the toy. When the soft bullet of the toy is pushed into the high-speed rotating flywheel, the soft bullet is extruded by the surface of the flywheel to generate a large friction force, the direction of the friction force points to the launching direction, and the bullet is thrown out to form launching. Meanwhile, the flywheels are oblique frustum flywheels, under the condition that the rotating angular speeds of the flywheels are the same, the surface linear speeds of the flywheels form differences, after the flywheels are in contact with soft bullets, the upper surfaces of the soft bullets deflect towards the tops of the upper flywheel frustum, the lower surfaces of the soft bullets deflect towards the tops of the lower flywheel frustum, and the deflection directions of the upper surfaces and the lower surfaces are opposite, so that a rubbing effect is generated on the soft bullets of the toy, and the self-spinning effect can be formed.

Example 2:

fig. 4 shows an asymmetric oblique frustum flywheel set provided in this embodiment, which includes two thin-walled hollow flywheels with different structures and shapes but the same side cross section orthographic projection outline shape and size, and only the position of the connecting end between the flywheels and the motor is changed. Each flywheel is provided with a motor shaft mounting hole.

Specifically, the function of the present embodiment is implemented as shown in fig. 4: when the flywheel/motor set combined type flywheel/generator set combined type flywheel/motor set combined type generator set combined. The two flywheels of the flywheel set rotate in different directions, and the directions of the two flywheels all point to the launching direction of the soft bullet of the toy. When the soft bullet of the toy is pushed into the high-speed rotating flywheel, the soft bullet is extruded by the surface of the flywheel to generate a large friction force, the direction of the friction force points to the launching direction, and the bullet is thrown out to form launching. Meanwhile, the flywheels are oblique frustum flywheels, under the condition that the rotating angular speeds of the flywheels are the same, the surface linear speeds of the flywheels form differences, after the flywheels are in contact with soft bullets, the upper surfaces of the soft bullets deflect towards the tops of the upper flywheel frustum, the lower surfaces of the soft bullets deflect towards the tops of the lower flywheel frustum, and the deflection directions of the upper surfaces and the lower surfaces are opposite, so that a rubbing effect is generated on the soft bullets of the toy, and the self-spinning effect can be formed.

Example 3:

the embodiment provides an oblique frustum flywheel set with a symmetric center, which comprises three thin-wall

hollow flywheels

11, 12 and 13 with the same structure, shape and size, and further comprises an emission area 14. Each flywheel is provided with a motor shaft mounting hole.

The flywheel in this embodiment is the same as that in embodiment 1.

Specifically, the function of the present embodiment is implemented as shown in fig. 5 and fig. 6: when the flywheel set/motor set type three-flywheel motor set is used, the three flywheels are symmetrically arranged in the circle center, and can be arranged in the clockwise direction or the anticlockwise direction. The rotating directions of a plurality of flywheels of the flywheel set all point to the launching direction of the soft bullet of the toy. When the soft toy bullet is pushed into the high-speed rotating flywheel, the soft toy bullet is extruded by the surface (grey schematic surface) of the flywheel to generate a large friction force, the direction of the friction force points to the launching direction, and the bullet is thrown out to form launching. Meanwhile, the flywheels are oblique frustum flywheels, under the condition that the rotating angular speeds of the flywheels are the same, the surface linear speeds of the flywheels form differences, after the flywheels are in contact with soft bullets, the upper surfaces of the soft bullets deflect towards the tops of the upper flywheel frustum, the lower surfaces of the soft bullets deflect towards the tops of the lower flywheel frustum, and the deflection directions of the upper surfaces and the lower surfaces are opposite, so that a rubbing effect is generated on the soft bullets of the toy, and the self-spinning effect can be formed. In the contact process of the soft bullet and the flywheel, the soft bullet is subjected to friction force pointing to the launching direction and the self-selecting direction and pressure from at least three springs which are symmetrical in circle center and point to the circle center direction and are equal in size, so that self-balancing renting is generated, and the ballistic restraint effect is achieved.

Example 4:

in this embodiment, the bullet is a soft bullet and is used for a toy gun for children. The diameter of the soft bullet is matched with the launching area.

Example 5:

furthermore, this bullet firing mechanism can comprise a plurality of flywheels, and a plurality of flywheels form regular polygon, and the region between the outer wall of a plurality of flywheels is launch site, with the bullet adaptation can.

While the present invention provides a bullet launching mechanism, and the method and means for implementing the same are numerous, the above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various modifications and enhancements without departing from the principles of the present invention, and such modifications and enhancements should also be considered as within the scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. The bullet shooting mechanism is characterized by comprising more than two flywheels, wherein the outer walls of the flywheels are concave surfaces, the concave surfaces of the outer walls of all the flywheels are mutually matched to form a shooting area for exciting bullets, and each flywheel is driven by a motor;

the flywheel comprises a wide opening end and a narrow opening end, the diameter of the flywheel is gradually increased from the narrow opening end to the wide opening end, and the outer wall of the flywheel from the narrow opening end to the wide opening end is in an inwards concave arc shape;

the flywheel is an oblique frustum flywheel, the section of a single flywheel is in an oblique frustum shape, and the contact part of the surface of the flywheel and the soft toy bullet is a regular arc surface so as to increase the contact area of the flywheel and the soft toy bullet;

the two groups of flywheels comprise a first flywheel and a second flywheel which have the same structure, the first flywheel and the second flywheel are arranged in parallel, the wide opening end of the first flywheel and the narrow opening end of the second flywheel are arranged on one side, the narrow opening end of the first flywheel and the wide opening end of the second flywheel are arranged on one side, and the area between the concave arc of the first flywheel and the concave arc of the second flywheel is an emission area;

the first flywheel and the second flywheel are driven by a motor, and the motor is arranged in the flywheel;

the first flywheel and the second flywheel are opposite in rotation direction;

the wide-mouth end of the flywheel is of an opening structure;

the gravity centers of the flywheel and the motor are positioned in the center of the transmitting area;

the center lines of the first flywheel and the second flywheel are parallel;

the flywheel comprises a third flywheel and a fourth flywheel which are different in structure, the third flywheel comprises a third flywheel wide-mouth end and a third flywheel narrow-mouth end, the fourth flywheel comprises a fourth flywheel wide-mouth end and a fourth flywheel narrow-mouth end, the diameter from the third flywheel narrow-mouth end to the third flywheel wide-mouth end is increased progressively, the diameter from the fourth flywheel narrow-mouth end to the wide-mouth end is increased progressively, the third flywheel and the fourth flywheel are placed in parallel, and an area between the concave circular arcs of the third flywheel and the fourth flywheel is an emission area.