HK1242761B - Displacement system for motor attachment angle in simulation gun - Google Patents

Description

Motor mounting angle displacement system in simulation gun

Technical Field

The present invention relates to a system for displacing the mounting angle of an output gear of a motor bracket constituting an electric mechanism relative to an input gear of a gear box in a simulation gun that drives a piston-cylinder mechanism via an electric mechanism and fires bullets using the generated compressed air.

Background Art

Among simulation guns, there are so-called electric guns. Electric guns generally have the following structure: an electric mechanism drives a piston-cylinder mechanism, and the resulting compressed air fires the bullet. The electric mechanism consists of a motor and a gearbox that reduces its rotational speed. The output gear on the motor and the input gear on the gearbox often use bevel gears suitable for driving precision machinery.

The output gear on the motor side and the input gear on the gearbox side are required to minimize backlash and be fixed separately with high precision. Conventional technology, such as Japanese Patent Publication No. 2006-300462, employs a structure where both the motor side (with the output gear) and the gearbox side (with the input gear) are fixed to the required configuration for each model. Consequently, the electric mechanism must be redesigned for each product development.

Therefore, even if a technically valuable structure is developed, the positional relationship between the motor and the gearbox is fixed. While this allows for similar imitation guns, it can be used across multiple models. Otherwise, the same electric mechanism cannot be used across multiple models. The electric mechanism is a crucial element in electric guns and cannot be ignored, and its design can sometimes become cumbersome. However, no system has yet been proposed that can create an electric mechanism that can be used across different imitation guns.

Previous technical literature

Patent Literature

Patent Document 1: Japanese Patent Publication No. 2006-300462

Summary of the Invention

Technical issues to be solved by the invention

The present invention was developed in response to the aforementioned problems, and its object is to provide a displacement system that maintains a highly accurate positional relationship between a motor having an output gear and a gearbox having an input gear, while allowing for variable positional relationships. Furthermore, another object of the present invention is to employ bevel gears as the output and input gears, and to employ unequal angles A and B (A≠B) between the axis of the rotating shaft connecting the respective connecting portions and the input gear and the radial axis before and after displacement. This allows for easy selection of multiple displacement angles.

Means for solving technical problems

In order to solve the above-mentioned problem, the present invention is a system for displacing the installation angle of a motor in a simulation gun. In a simulation gun in which a piston-cylinder mechanism is driven by an electric mechanism and bullets are fired by the generated compressed air, the system can displace the installation angle of the output gear of the motor bracket constituting the electric mechanism relative to the input gear of the gear box. The system for displacing the installation angle of the motor in the simulation gun adopts the following method: the above-mentioned output gear and input gear are composed of bevel gears, at least two connecting parts are provided on the gear box side, and connecting object parts corresponding to the above-mentioned connecting parts are provided on the motor bracket side. The above-mentioned connecting parts exist on the same circumference with the rotation axis of the input gear as the center, and pass through both sides of the radial axis of the rotation axis of the input gear. The angles A and B formed by the axis connecting each connecting part and the rotation axis of the input gear and the above-mentioned radial axis are not equal (A≠B).

The simulation gun, the subject of the present invention, has a structure similar to conventional electric guns in that a piston-cylinder mechanism is driven by an electric mechanism, resulting in the firing of a bullet using the generated compressed air. The electric mechanism comprises a motor bracket and a gearbox. The torque required to drive the piston-cylinder mechanism is generated by coupling an output gear on the motor bracket with an input gear on the gearbox.

On the motor bracket side, the rotating shaft itself can be the motor shaft, but the motor may also be a reduction motor. A motor bracket is a component that incorporates a retaining function, etc., within a single motor. Furthermore, the gearbox side typically constitutes a gear set in the reduction system. While the word "gearbox" includes the word "box," the important point is that it constitutes a gear set, not necessarily a box structure. Furthermore, the input shaft of the gearbox or gear set includes a first gear.

The output and input gears are constructed from bevel gears. The meshing of these bevel gears can be achieved using not only right-angled shafts but also obtuse-angled and acute-angled shafts. To determine the meshing position of these output and input gears, at least two connecting portions are provided on the gearbox side, and corresponding connecting portions are provided on the motor bracket side.

The connecting portions are configured such that they lie on the same circumference centered on the input gear's rotational axis and are located on either side of a radial axis passing through the input gear's rotational axis. The angles A and B formed between the axes connecting the connecting portions and the input gear's rotational axis and the radial axis are unequal (A≠B) (see Figure 9). This configuration allows the position of the motor bracket relative to the gearbox to change only by the difference between angles A and B. This allows the connection position to be shifted relative to the radial axis passing through the input gear's rotational axis in two different ways: with angle A positioned upward and angle B downward, and with angle B positioned upward and angle A downward.

Furthermore, the aforementioned angle variations allow for four possible connection positions, with the gearbox-side bevel gear oriented either constant or reversed. However, these descriptions relate to a situation where the gearbox-side bevel gear's rotating surface is vertical and the radial axis passing through the input gear's rotating shaft is horizontal.

In the present invention, a preferred configuration is as follows: a third connection portion is provided as a connection portion, the third connection portion being cocircumferentially located with the two connection portions, and the angle C formed between the axis connecting the third connection portion and the rotational shaft of the input gear and the axis connecting the second connection portion and the rotational shaft of the input gear being equal to the sum of the unequal angles A and B formed between the radial axes connecting the first and second connection portions and the rotational shaft of the input gear. The first and second connection portions may be either of the two connection portions.

In the case of a third connection, the position can be selected as either the bottom or top, allowing four different connection positions. When the system is reversed, this allows a total of eight possible connection positions. Furthermore, the position of the motor bracket relative to the gearbox can be freely adjusted within a 90-degree range, providing greater flexibility in product development.

Furthermore, the connecting portion is an arc-shaped connecting portion formed on the same circumference of the gearbox centered on the rotation axis of the input gear, and the motor bracket can be fixed at any position on the arc (see Figure 14). In this way, according to the present invention, a system of electric mechanisms that can be used in simulation guns with different appearances is constructed.

Effects of the Invention

The present invention, constructed and functioning as described above, provides a displacement system capable of maintaining a highly accurate positional relationship between the motor bracket side having the output gear and the gearbox side having the input gear, while enabling the system to be altered to various positions. Furthermore, according to the present invention, the output gear and input gear are formed of bevel gears, and the angles formed between the axis of the rotating shaft connecting each connecting portion and the input gear and the radial axis before and after displacement are unequal (A≠B). This allows for easy selection of various displacement angles.

DETAILED DESCRIPTION

The present invention will be described in more detail with reference to the following illustrated embodiments. FIG1 illustrates an example of a simulated gun employing the motor mounting angle displacement system according to the present invention, with a multi-bullet firing electric gun being shown as simulated gun G. The simulated gun G has three barrels 11, 12, and 13. The compressed air generating unit 10 includes a cylinder assembly 20 comprised of three cylinders 21, 22, and 23, a piston assembly 30 comprised of three pistons 31, 32, and 33, and an electric mechanism 40 for driving the piston assembly 30 (see FIG2 , etc., below).

A loading assembly 50 is located at the rear of the barrels, with a detachable magazine 51 mounted below it. Within the loading assembly 50, a loading section 14 for loading bullets B is located within the rear ends of the three barrels 11, 12, and 13. A cocking mechanism 15 for trajectory adjustment is located within the loading section 14. Furthermore, the rear ends of the three barrels 11, 12, and 13 are covered with a connecting package 16, which is made of a flexible material such as rubber and has sealing properties (see Figure 2).

The compressed air generator 10 is the component of the multi-bullet-firing electric gun G that generates the air ejected for each bullet B, allowing the bullets B to be fired from the respective barrels 11, 12, and 13. When viewed from the front, the three barrels themselves form a triangular shape, and the compressed air generator 10 is positioned within and behind the electric gun G. The cylinder assembly 20, piston assembly 30, and electric mechanism 40 that constitute the compressed air generator 10 are arranged in this order in a generally straight line.

The cylinder assembly 20 comprises three cylinders 21, 22, and 23 located behind the three barrels 11, 12, and 13. Air jet nozzles 24 are located at the front ends of the cylinders, and pistons 31, 32, and 33 reciprocate within the cylinders. The illustrated cylinder assembly 20 comprises three tube members 25; a front fixing member 26 securing each tube member 25 to the front end; and a rear fixing member 27 securing each tube member 25 to the rear end (see Figures 3 and 4).

The air jet nozzle 24 is mounted on the front fixing member 26, and a piston insertion port 25a is formed in the rear fixing member 27. The jet nozzle 24 is mounted on the front of a duct mounting member 25b, which is attached to a stopper 25c on the rear of the front fixing member 26. The duct mounting member 25b is positioned so as to fit within the tube member 25 and is assembled airtightly using a sealing member 26a ( FIG. 4B ).

As shown in the illustrated embodiment, an inter-nozzle 28 is disposed between the loading section 14 and the air jet nozzle 24. The inter-nozzle 28 is arranged to be movable forward and backward via a nozzle base 29. The inter-nozzle 28 slides airtightly relative to the jet nozzle 24 and is positioned to eject the compressed air generated in the compressed air generating section 10 toward the bullet. The inter-nozzle 28 is mounted on a rising portion 29a of the nozzle base 29 and is assembled into the main body of the imitation gun G so that it can move forward and backward. Therefore, in the device of the present invention, the nozzle is composed of the jet nozzle 24 and the inter-nozzle 28, and the inter-nozzle 28 is suitable as the nozzle to which the movement of the movable part is transmitted.

Thus, as the pistons 31, 32, and 33, described later, retract, the connecting nozzle 28 retracts by engaging with the latching member 49 and is advanced by the spring acting on the biasing member 29b of the nozzle base 29 (see FIG2 ). Furthermore, the connecting nozzle 28 is configured such that its front end also slides airtightly relative to the connecting package 16, withdraws away from the connecting package 16 to open the gap through which the bullet B is pushed upward to the rear end of the barrel, i.e., the bullet feed port, and then advances to push the bullet B into the loading section 14.

The air injection nozzles 24 are positioned near the centers of the tube members 25, 25, 25 of the three cylinders 21, 22, and 23 (see Figure 5). This is a countermeasure for the following reasons: since there are only three gun barrels 11, 12, and 13 in the illustrated example, they cannot align with the center of the cylinder tubes, which have a larger diameter than the gun barrels. Therefore, the positions of the air injection nozzles 24, 24, 24 are determined by the relationship between the center positions of the gun barrels and the cylinder tubes.

The piston assembly 30 includes three pistons 31, 32, and 33 that reciprocate within cylinders 21, 22, and 23, generating compressed air. These three pistons 31, 32, and 33 are joined together at a rear joint 34, and a piston shaft 35 having a rack 36 extending in the reciprocating direction is integrally formed with the joint (see FIG6 ).

The three pistons 31, 32, and 33 maintain flexibility while engaging with the joint 34, thereby maintaining sealing performance between the pistons 31, 32, and 33 and the inner wall of the cylinder. Specifically, the piston and cylinder that comprise the piston-cylinder mechanism tend to achieve higher compression ratios when their positional relationship or mating precision is high. To achieve this, their respective axis centers must also be aligned with high precision. However, maintaining a certain degree of flexibility allows for achieving high compression ratios without requiring excessive precision.

To achieve this flexibility, the present invention employs a structure in which pistons 31, 32, and 33 are mounted at the distal ends of elongated rods 37, 37, and 37, respectively. Each rod 37 is axially fixed to allow for movement via a rear joint 34. In the illustrated embodiment, each rod 37 is axially fixed using a support shaft 37a extending left and right relative to the direction of piston reciprocation, allowing all rods 37 to move, for example, vertically. Furthermore, O-rings (illustrated) are used as sealing members 38 on pistons 31, 32, and 33 to maintain airtightness.

In the embodiment where the piston-cylinder mechanism comprises three groups, the structure is as follows: As described above, the three groups of piston assemblies 30 are combined to form a triangular shape when viewed from the front. The piston shaft 35 is positioned at the joint 34, offset below the center of the three groups, and the rack 36 is located above the offset portion. Therefore, the rack 36 is positioned near the center of the three groups, providing space 39 for the output gear 41 of the electric mechanism 40. Furthermore, the driving force from the output gear 41 is more efficiently transmitted from a position closer to the centerline.

The electric mechanism 40 is configured as follows: while simultaneously retracting the piston assembly 30, it accumulates pressure in the elastic member 42 and drives the sector gear 41 meshing with the rack 36, compressing the air by releasing the accumulated pressure. Specifically, referring to Figure 7 , reference numeral 43 denotes the electric motor, or motor bracket; 44 denotes the pinion gear mounted on its rotating shaft; and 45 denotes a reduction gear train consisting of multiple gears meshing with the pinion gear. The sector gear 41 has a gear on a portion of its circumference. Specifically, the sector gear 41 has a toothed portion 41a that meshes with the rack 36 to retract the piston assembly 30, and a toothless portion 41b that does not mesh with the rack 36, allowing the piston assembly 30 to advance.

The piston shaft 35 has a hollow structure and is biased in the forward direction by an elastic member 42, shown as a coil spring, within the hollow interior. One end of the elastic member 42, formed of the coil spring, contacts the front end of the piston shaft's hollow interior, while the other end is supported by a piston moving portion 46, or the rear end of a cavity, located within the motor mechanism 40. Reference numeral 47 represents a guide portion, comprised of a concave-convex structure, located along the longitudinal side of the piston shaft 35. This guide portion engages with a protrusion 46a, a concave-convex structure located on the gun body, functioning as a guide for forward movement.

The multi-bullet electric gun G of the present invention is equipped with mechanisms necessary for the operation of the electric gun, such as a power supply battery (not shown) or a circuit connecting the power supply battery and the motor bracket 43, and a switch for turning the power on and off. Reference numeral 18 denotes a switch, 19 denotes an outer barrel housing the three barrels, 48 denotes a selector for selecting the firing mode, 52 denotes an operating selector lever, and 49 denotes the aforementioned latching member. The latching member 49 is configured as an engaging member that is vertically movable at the rear end of the nozzle base 29 and is axially fixed by a support shaft 29a. It can be retracted by engaging with an engaging portion 49a provided on the piston shaft 35 and can be released by contacting a releasing portion 49b provided on the gun body. Reference numeral 49c denotes a spring that urges the latching member 49 toward engagement with the engaging portion 49a (see FIG. 2 ). Furthermore, the nozzle base 29 is configured such that a spring 29 b acts as a biasing member in the forward direction so as to push the supplied bullet B toward the loading section 14 .

The present invention also incorporates a motor mounting angle displacement system that can displace the mounting angle between the output gear 53 of the motor bracket 43 constituting the electric mechanism 40 and the input gear 54 of the gearbox 55. In the embodiment, the output gear 53 is a pinion gear 44 comprising a small-diameter bevel gear mounted on the output shaft of the motor bracket 43, and the input gear 54 is a primary gear 45a of a reduction gear set 45 comprising a large-diameter bevel gear (see FIG. 7 ).

The motor bracket 43 and gear box 55 are mounted on the piston cover 56 (see Figure 8 ) and are assembled separately using bolts or pins. The displacement system shown in Figure 8 is compatible with the electric gun G of the embodiment, with the motor bracket 43 and gear box 55 positioned above the piston cover 56. However, considering common configurations in simulation guns, it is believed that positioning the motor bracket 43 and gear box 55 below the piston cover 56 is more common. Therefore, the description below Figure 9 will focus on this more common configuration, which is more readily applicable.

FIG9 illustrates the essential relationship between the output gear 53 of the motor bracket 43 and the input gear 54 of the gear box 55 in the present invention. The output gear 53 is located at the front end of an output axis 53L extending from the motor bracket 43. The direction of the output axis 53L coincides with the longitudinal axis of the motor bracket 43. The input gear 54 is located at the rear end of the gear box 55. The longitudinal axis 54L of the rotating shaft 60 passing through the input gear 54 coincides with the longitudinal axis of the gear box 55 and is orthogonal to the rotating shaft 60. Thus, the meshing between the output gear 53 and the input gear 54 is achieved through a right-angled axis.

At least two connecting portions 57 and 58 are provided on the gear case 55 side, and two connecting portions 61 and 62 are provided on the motor bracket 43 side, aligned with the connecting portions 57 and 58. These connecting portions 57 and 58 are located on the same circumference centered on the rotational shaft 60 of the input gear 54 and pass through either side of the radial axis 54L of the rotational shaft 60 of the input gear 54. The angles A and B formed between the axes connecting the connecting portions 57 and 58 and the rotational shaft 60 of the input gear 54 and the radial axis 54L are unequal (A≠B). The two connecting portions 57 and 58 are sometimes referred to as the first connecting portion and the second connecting portion, respectively.

To specifically describe the embodiment, the angles A and B of the motor bracket 43 and the angles A and B of the gear box 55, as shown in Figure 9, allow the motor bracket 43 and the gear box 55 to be connected in a straight line. Figures 10A, B, and C illustrate the combined configuration of the motor bracket 43, gear box 55, and piston cover 56 based on this arrangement. Figures 10B and 10C show the motor bracket 43 in an upside-down position on the page.

The configuration in Figure 10B is the same as that in Figure 9 , with the motor bracket 43 and gearbox 55 joined in a straight line (see Figure 11A ). In an upside-down configuration compared to Figure 10B , as in Figure 10C , the motor bracket 43 is tilted downward by an angle B-A (see Figure 11B ). To indicate whether the motor bracket 43 is in an up-down configuration, markings 63 and 64 are located at appropriate locations. The markings 63 and 64 shown in the figure are represented by + and -. The - marking 64 indicates a straight line, while the + marking 63 indicates an inclined position.

Figures 11C and 11D illustrate a case where a third connecting portion 59 is also used. As shown in Figure 9 , the third connecting portion 59 is cocircumferential with the two connecting portions 57 and 58, and the angle C formed between the axis of the rotating shaft 60 connecting the third connecting portion 59 and the input gear 54 and the axis of the rotating shaft 60 connecting the second connecting portion 58 and the input gear 54 is equal to the sum of the unequal angles A and B formed between the radial axis 54L of the rotating shaft 60 connecting the first connecting portion 57, the second connecting portion 58, and the input gear 54.

In the example, angle A is 30 degrees and angle B is 40 degrees. FIG11A is based on the connection in FIG10B , so motor bracket 43 and gear box 55 are arranged in a straight line. In contrast, as shown in FIG11B , when motor bracket 43 is oriented upside down, the first connecting portion 57, second connecting portion 58, and connecting objects 62 and 61 are arranged upside down, so motor bracket 43 is tilted downward by only B40 degrees - A30 degrees = 10 degrees. The motor bracket 43 in Figure 11C has the same configuration as that in Figure 11A, and is based on the combination of the second connecting part 58, the third connecting part 59 and the connecting object parts 61 and 62, so it is tilted downward by A30+B40=70 degrees. The motor bracket 43 in Figure 11D has the same configuration as that in Figure 11B, and is based on the upside-down configuration of the connecting parts 58, 59 and the connecting object parts 62 and 61, so it is tilted downward by (A+B)70 degrees+(B-A)10 degrees=80 degrees.

According to the present invention thus constructed, a displacement system with four motor mounting angles can be realized simply by using the configuration shown in Figures 11A, B, C, and D. However, since Figures 11A-D can also be arranged upside down, a displacement system with eight motor mounting angles can be selected through simple calculations. For illustrative purposes, the following describes the application of the motor mounting angle displacement system to an electric gun G, and provides various simulation gun designs.

Figure 12A illustrates a motor mounting angle displacement system according to the present invention, applied to a simulated gun G that is elongated almost exclusively in the front-to-back direction. In this case, the motor mount 43 and gear box 55 are arranged horizontally and in a straight line within the gun body. Figure 12B illustrates a long-lance-shaped simulated gun G with a buttstock 65 that is slightly tilted downward. In this case, a downward tilt of 10 degrees is ideal. For example, the example of Figure 11B where the motor mount 43 is tilted downward by B40 degrees - A30 degrees = 10 degrees is preferred. Note that common structural elements are referenced to the reference numerals shown in Figure 1, and detailed descriptions are omitted.

FIG13A shows a diagram of a displacement system for the motor mounting angle of the present invention applied to a simulation gun G having a grip 66 with a slightly greater rearward inclination. Therefore, it is preferable that the axis 53L of the motor bracket 43 and the axis 54L of the gear box 55 be inclined at, for example, 70 degrees, as shown in the example set in FIG11C . In the case of a simulation gun G having a grip 67 with a lesser inclination, it is preferable that the axis 53L of the motor bracket 43 and the axis 54L of the gear box 55 be inclined at, for example, 80 degrees, as shown in the example set in FIG11D .

Furthermore, in the motor mounting angle displacement system of the present invention, the connection portion is not limited to bolt holes; an arcuate connection portion 68 can also be used. Figure 14 shows an example of this. The arcuate connection portion 68 is formed on the same circumference of the gearbox 55, centered on the input gear's rotation axis. The requirements for the motor bracket 43 are the same as those described above. Within the range of the arcuate connection portion 68, the motor bracket 43 can be fixed at any position regardless of the angle. Furthermore, Figure 14B shows Example 1, where the axis 53L of the motor bracket 43 and the axis 54L of the gearbox 55 are horizontal, and Figure 14C shows Example 2, where the axis 53L of the motor bracket 43 and the axis 54L of the gearbox 55 are perpendicular. Reference numeral 69 is a screw, used to connect the motor bracket 43 to the gearbox 55 in all connection portions 57, 58, and 59, the arcuate connection portion 68, and the connection target portions 61 and 62.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view illustrating an example of a simulation gun to which a displacement system for a motor mounting angle according to the present invention is applied.

FIG. 2 is also an explanatory cross-sectional view showing an enlarged view of a main part of a simulated gun.

FIG3 is also a perspective view showing the cylinder assembly and the piston assembly in an exploded manner.

FIG4 is a diagram showing the cylinder assembly, A is a side view, and B is a central longitudinal sectional view.

FIG5 is also a diagram showing the cylinder assembly, A is a perspective view, B is a front view, and C is a rear view.

FIG6 is also a side view showing the piston assembly.

FIG. 7 is also an explanatory diagram showing the portion from the piston assembly to the electric mechanism.

FIG. 8 is a side view illustrating an example of a displacement system for a motor mounting angle according to the present invention.

FIG. 9 is an explanatory diagram showing the necessary relationship between the motor bracket and the gear box in the above-mentioned displacement system.

FIG10 is also a diagram related to the installation of the motor bracket, A is a side view illustrating the piston assembly, B is a side view illustrating one aspect of the motor bracket and the gear box, and C is also a side view illustrating another aspect.

FIG. 11 is also an explanatory diagram showing four modes ABCD of displacement in which the mounting angles of the motor bracket and the gear box are changed.

FIG. 12 is a side view showing two types of imitation guns AB to which the displacement system of the present invention is applied.

FIG. 13 is a side view showing two other types of imitation guns AB to which the displacement system of the present invention is applied.

Figure 14 is also a diagram showing another embodiment of the displacement system of the present invention, A is a side view of the gear box, B is a side view of Example 1 combined with a gear box and a motor bracket, and C is also a side view of each side view of the combination example 2.

Explanation of symbols

10- Compressed air generating unit, 11, 12, 13- Gun barrel, 14- Loading unit, 15- Top-spin mechanism, 16- Connecting package, 17- Trigger, 18- Switch, 19- Outer barrel, 20- Cylinder assembly, 21, 22, 23- Cylinder, 24- Injection nozzle, 25- Tube component, 26- Front fixing component, 27- Rear fixing component, 28- Connecting nozzle, 29- Nozzle base, 30- Piston assembly, 31, 32, 33- Piston, 34- Joint, 35- Piston shaft, 36- Rack, 37- Rod, 38- Sealing component, 39- Gear configuration space, 40- Motor Structure, 41-output gear, 42-elastic component, 43-electric motor, motor unit, 44-pinion, 45-reduction gear set, 46-piston moving part, 47-guide groove, 48-selector, 49-tooth component, 50-loading assembly, 51-brake, 53-output gear, 54-input gear, 55-gear box, 56-piston cover, 57, 58, 59-connecting part (respectively the 1st, 2nd and 3rd), 60-rotating axis, 61, 62-connecting object part, 63, 64-mark, 65-buttstock, 66, 67-grip, 68-arc-shaped connecting part, 69-fixing part.

Claims (3)

1. A displacement system for the motor mounting angle in a simulated gun, wherein a piston cylinder mechanism is driven by an electric mechanism and a bullet is fired by the generated compressed air, thereby displacing the mounting angle of the output gear of the motor bracket constituting the electric mechanism relative to the input gear of the gearbox. The displacement system of the motor mounting angle in the simulated gun is characterized by the following: The aforementioned output and input gears are composed of bevel gears, with at least two connecting portions provided on the gearbox side. On the motor bracket side, a connecting portion identical to the aforementioned connecting portions is provided. The aforementioned connecting parts exist on the same circumference centered on the rotation axis of the input gear, and pass through both sides of the long side axis of the rotation axis of the input gear. The direction of the long side axis is consistent with the long side axis of the gearbox and orthogonal to the rotation axis. The angles A and B formed by the axis connecting each connecting part and the rotation axis of the input gear and the long side axis are not equal (A≠B). 2. The displacement system for the motor mounting angle in the simulated gun according to claim 1, wherein, The third connecting part is provided as a connecting part. The third connecting part is on the same circumference as the connecting parts at the two locations. The angle C formed by the axis of rotation connecting the third connecting part and the input gear and the axis of rotation connecting the second connecting part and the input gear is equal to the sum of the unequal angles A and B formed by the axes of rotation connecting the first connecting part, the second connecting part and the input gear and the aforementioned long-side axis. 3. The displacement system for the motor mounting angle in the simulated gun according to claim 1, wherein, The connecting part is an arc-shaped connecting part formed on the same circumference of the gearbox with the rotation axis of the input gear as the center, which can fix the motor bracket at any position on the arc.