Toy grenade

Abstract

To provide a device for facilitating a reloading of multi-tubular type high-explosive shell at the multi-tubular type toy high-explosive shell.SOLUTION: A toy high-explosive shell for firing multiple bullets at a time comprises a cylindrical bullet case 10, the cylindrical bullet case comprises multiple storage tubes 13 arranged in an annular shape and multiple extension parts for fitting an elastic rubber ring and arranged an annular shape and each of the extension parts includes a guide part and the guide part is angled inwardly so that the elastic rubber ring can bend inwardly when it moves toward a distal end of the guide part.SELECTED DRAWING: Figure 4E

Description

[Technical field]

[0001] This application claims the benefit of priority to U.S. Provisional Patent Application No. 63,355,155, filed June 24, 2022. (CROSS REFERENCE TO RELATED APPLICATIONS)

[0002] The present invention relates to a bullet loading device for toy grenades, which is capable of firing a large number of bullets at once in a specific direction and from which the bullets can be removed at will. [Background technology]

[0003] Grenades are a common weapon in modern warfare; they are small explosive devices, usually thrown by hand (although some grenades are launched in a propelled manner, like mortars). These devices are usually projected into a designated area and then explode. However, this application is not related to grenades, but to a toy multi-tube grenade (e.g. airsoft 40mm gas & CO2 grenade, abbreviated as "airsoft grenade") that imitates the effect of a shotgun. It is used to launch a large number of pre-loaded projectiles (non-lethal toy imitation rounds). Multi-tube grenades are usually gas-powered and can launch all projectiles at once in one direction. These projectiles disperse slightly during the launch and flight process to create a dispersion effect. It can be used in a toy launcher (see patent specification EP2573499B1 for details). Summary of the Invention [Problem to be solved by the invention]

[0004] A traditional multi-tube grenade (see US Patent US8517005B2 for details) usually contains a gas reservoir, a primer, a rod assembly, a magazine, and a rubber ring installed in a fixed position (see US Patent US10443970B2 for details). This type of grenade can fire all projectiles at once. Loading a large number of projectiles into a grenade is a time-consuming task.

[0005] Traditional toy grenades on the market require the user to apply enough pressure to force the projectile through the rubber ring and into the magazine every time. If a grenade has 10 housing tubes, each housing tube can hold multiple projectiles, the user must load each housing tube with a projectile one after the other in sequence. Therefore, a device that allows users to more easily reload this type of grenade would be very beneficial. [Means for solving the problem]

[0006] In some embodiments, a bullet loading device for the toy grenade is provided, the bullet loading device including a body having an upper cup-shaped portion and a lower ejection portion. The cup-shaped portion includes a number of annular compartments separated by a number of annular partition walls. The ejection portion includes a central opening, symmetrical about a central axis, and has a number of annularly arranged bullet discharge tubes disposed therearound, each of which can receive a bullet through a top opening connected to the upper cup-shaped portion. A user can place a lid on the loading device and shake it to input a bullet into each of the discharge tubes. When the loading device is coupled to a toy grenade having a cylindrical bullet case, the user can instantly input all of the predetermined number of bullets from the discharge tubes into the multiple annularly arranged storage tubes of the grenade.

[0007] In another embodiment, the present invention relates to a method for loading a bullet, including: at least one toy grenade having a cylindrical bullet case, the cylindrical bullet case having a central hole and a plurality of annularly arranged receiving tubes arranged around the central hole for receiving a bullet in each receiving tube; and a bullet loading device for the toy grenade, the bullet loading device including a body having an upper cup-shaped portion and a lower ejection portion. The cup-shaped portion includes a number of annular compartments, the compartments being separated by a number of annular partition walls. The ejection portion includes a central opening, symmetrical about a central axis, and has a number of annularly arranged bullet exhaust tubes disposed therearound, each of which can receive a bullet through a top opening connected to the upper cup-shaped portion. The bullet loading device performs the following steps: loading a number of bullets into the bullet loading device; receiving a predetermined number of bullets from the receiving tube of each toy grenade; blocking the opening of the bullet discharge tube of each bullet loading device, and then removing the bullet loading device.

[0008] In another embodiment, the present invention relates to a toy grenade with a cylindrical bullet case having a special hole opening. The bullet case includes a plurality of receiving tubes and an annular extension, the extension having a support surface extending around a centerline, providing an annular surface for mounting a soft rubber ring on the hole opening of the bullet case. In traditional toy grenades on the market, after loading a large number of bullets into the toy grenade, the user cannot safely remove the bullets. This is because the rubber ring in a fixed position blocks the movement of the bullets. The user has no other choice but to release the compressed air to fire all the bullets. However, in the present invention, when the soft rubber ring is adjacent to a predetermined position at the front end of the hole opening, it blocks the bullets from falling. Since the rubber ring is not fixed in a specific position, the user can move the rubber ring to the front end and safely remove and take out all the bullets. Another embodiment relates to a cylindrical bullet case with a special hole opening, the cylindrical bullet case includes a number of annularly arranged receiving tubes and a number of annularly arranged extensions, the annularly arranged extensions are configured to receive a soft rubber ring, and there are gaps between each of the annular extensions, through which a push-pull interface of the soft rubber ring can be set on the hole opening of the cylindrical bullet case. Effect of the Invention

[0009] The present invention relates to a cylindrical bullet case for a toy grenade, the cylindrical bullet case having a central hole around which a number of annularly arranged containment tubes are set, each of which is provided for containing a bullet; and a number of annularly arranged support surfaces adjacent to the forward opening of each of the containment tubes and extending around the centerline to provide a discontinuous annular surface for mounting a soft rubber ring. In this manner, the user can easily replace the rubber ring. When the aforementioned push-pull interface is inserted into the opening of the central hole, the multiple annularly arranged rear portions of the push-pull interface, in cooperation with the multiple guide surfaces, can push the soft rubber ring into place. The details of one or more examples are set forth in the accompanying drawings and the following description. Other features, objects, and advantages will be apparent from the description and drawings, as well as from the claims. [Brief description of the drawings]

[0010] [Figure 1A] 1 is a schematic diagram of a toy multi-tube grenade and associated device that fires multiple projectiles at once, according to one embodiment of the present invention. [Figure 1B] In an exemplary embodiment, the bullet case includes a plurality of containment tubes. [Figure 1C] In an exemplary embodiment, the bullet case includes an annular extension extending forward from the inner periphery of the bullet case. [Figure 2A]In one embodiment of the invention, only the lead projectile in each containment tube needs to overcome the resistance of the rubber ring. [Figure 2B] In an exemplary embodiment, along the guide surface of the extension, the rubber ring can contract inwardly as it is pushed from position L1 to the front end of the extension. [Figure 3A] In an exemplary embodiment, when the rubber ring is in position L2, each containment tube is loaded with a predetermined number of projectiles. [Figure 3B] In an exemplary embodiment, the annular extension is designed to prevent a predetermined quantity of projectiles from falling out when the rubber ring is in position L1. [Figure 3C] In the exemplary embodiment, the bullet pushes the rubber ring from position L1 to L2, causing it to shrink inward along the annular guide surface. [Figure 4A] In one embodiment, the ammunition loading device is intended to efficiently load multiple ammunition into each of the housing tubes of the toy grenade at one time. [Figure 4B] In one embodiment, the resilient rubber ring is pulled to position L2 and a sufficient number of projectiles are loaded into the loading mechanism. [Figure 4C] It takes a predetermined amount of rounds from each containment tube, blocks the opening of each round ejection tube, and then removes the loading device. [Figure 4D] The elastic rubber ring can be pushed from position L2 to position L1 to block the bullet's fall. [Figure 4E] The depth of the bullet ejection tube is marked as D1, where the depth of D1 is equal to the height of a given quantity of bullets stacked within the containment tube. [Figure 4F] The loading mechanism can include a rotating structure adjacent a bottom opening of the projectile ejection tube. [Figure 4G] In an exemplary embodiment, the rotating structure prevents the bullet from falling when in position R1. [Figure 4H] In an exemplary embodiment, the rotating structure can also include an annular wall. [Figure 4I]In the exemplary embodiment, these extensions serve to assist with assembly or positioning requirements. [Figure 4J] A loading device, in accordance with one embodiment of the present invention, has a number of compartments separated by a number of annularly arranged partition walls. [Figure 4K] The loading mechanism may also include shorter dividers arranged in an annular configuration to help guide the projectile more smoothly into the top opening of the projectile tube. [Figure 4L] In an exemplary embodiment, the user can place the lid on top and then shake the loader to allow the round to enter the round ejection tube more smoothly. [Figure 4M] In an exemplary embodiment, the ejection section includes a central opening shaped to fit the head of a toy grenade. [Figure 5A] According to another embodiment, adjacent the forward opening of each containment tube there is provided a discontinuous annular surface for mounting a soft rubber ring. [Figure 5B] In an exemplary embodiment, a multi-tiered annularly arranged support surface is also included adjacent the forward opening of each containment tube and extending about the centerline axis. [Figure 5C] In an exemplary embodiment, the bullet case also includes a number of annularly arranged guide surfaces extending from and inclined to each of the support surfaces. [Figure 5D] In an exemplary embodiment, a rubber ring push-pull interface is movably mounted at the openings through these gaps. [Figure 5E] In one embodiment, a rubber ring push-pull interface is movably mounted at the opening through these gaps. [Figure 5F] In one embodiment, a rubber ring push-pull interface is movably mounted at the opening through these gaps. [Figure 5G] In one embodiment, a rubber ring push-pull interface is movably mounted at the opening through these gaps. [Figure 6A]In one embodiment, an example of a grenade containing a rubber ring interface is shown. [Figure 6B] In one embodiment, the rubber ring is slidable between positions L1 and L2. [Figure 6C] In one embodiment, when the rubber ring is in position L2, the trajectory is not interfered with. [Figure 6D] In one embodiment, the interface may have a number of fins disposed on its circumferential surface. [Figure 6E] In one embodiment, the interface may have a number of fins disposed on its circumferential surface. [Figure 6F] In one embodiment, the fins of the interface can be compressed to push the rubber ring up to position L1. [Figure 6G] In an exemplary embodiment, the shape of the annular array of fins can have different designs for assembly and positioning purposes. [Figure 6H] In an exemplary embodiment, the interface may also include an aft fin for several annular arrays of fins. [Figure 7A] In one embodiment, recesses are provided between adjacent storage tubes to allow for the insertion of the aforementioned rear fins. [Figure 7B] In one embodiment, when the rubber ring is in position L1, it can be set as the initial setting position of the interface. [Figure 7C] When you use the interface to push the rubber ring to L1, the interface position will temporarily be in the lowest position. [Figure 7D] In one embodiment, the component can be fixed in a forward position, a return position, or a temporary position. [Figure 7E] The switch components include a spring for providing resilience, and a post-shaped first body having a number of teeth arranged in an annular fashion. [Figure 7F]One example is a diagram showing the interactions between each component. [Figure 7G] One example is a diagram showing the interactions between each component. [Figure 7H] In an exemplary embodiment, the bullet case can include a number of annular guide grooves defined on the inner surface thereof by a number of annularly arranged main posts. [Figure 8A] In one embodiment, the rod assembly is movable between a fifth position and a sixth position within the reservoir. [Figure 8B] In one embodiment, the rod assembly is movable between a fifth position and a sixth position within the reservoir. [Figure 8C] The rod assembly includes an air intake rod mounted on a front surface thereof. [Figure 8D] In one embodiment, the rod assembly is adapted to move only rearwardly when releasing compressed air from the reservoir. [Figure 8E] In one embodiment, the primer component serves to guide the movement of the rod assembly during the firing process. [Figure 8F] The rod assembly includes a rod extending rearwardly from the center of the forward radial extension ring. [Figure 8G] In the exemplary embodiment, several different states of the primer parts and rod assembly are shown. [Figure 8H] In an exemplary embodiment, the primer is comprised of an upper radial extension, an outer cylindrical wall, an outer annular inwardly contracting surface, and a ring-shaped recess. [Figure 8I] In an exemplary embodiment, the primer is comprised of an upper radial extension, an outer cylindrical wall, an outer annular inwardly contracting surface, and a ring-shaped recess. [Figure 8J] When the primer is pushed forward, the rod assembly moves rearward, indicating that compressed air is forced forward from the gas reservoir through a gap. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] In the following description, many specific details are provided. However, in order to avoid losing focus, widely known methods and components are not described. Although terms such as "first, second" are used to describe each element herein, these elements should not be constrained by these terms. These terms are used only to distinguish one element from another. For example, the first body described in FIG. 7E can be called the second body, and similarly, the second body can be called the first body, which does not go beyond the scope of this application. The terms used in the description of this application are only for describing a specific embodiment and do not imply any constraints on the application. For example, a BB bullet is a kind of spherical bullet (made of plastic) used by toy guns. In the following, they are collectively referred to as bullets, but this does not imply any constraints on this application, which can be applied to any non-lethal projectile, including but not limited to toy bullets, paintballs, or water balls.

[0012] Please refer to Figures 1A, 1B, and 1C. This is a toy grenade 100 for simultaneously firing a large number of bullets in a specific direction. The grenade 100 includes a cylindrical bullet case 10 and a gas storage chamber 40, which allows the high-pressure gas inside to instantly eject the bullets. The bullet case 10 includes a plurality of housing tubes 13 and an annular extension 14 extending forward from the inner circumference 101 of the bullet case 10. The extension 14 extends forward about a centerline axis X. The extension 14 includes a portion of a support surface 141 extending about the centerline axis X, which provides a portion of an annular surface for mounting the elastic rubber ring 11. Also, an annular guide surface 142 is located at a forward lower edge of the annular support surface 141 and at a reduced angle relative to the annular surface. This forms a cylindrical nozzle that extends forward from the inner circumference 101 of the bullet case 10 and narrows inward, allowing a resilient rubber ring 11 to slide into the cylindrical opening of the bullet case 10.

[0013] In the following description, in terms relating to bullet cases, "forward" refers to the direction toward the opening 131 at the forward end of the housing tube 13 (see FIG. 1C), "backward" refers to the direction toward the inlet 132 at the rear end of the housing tube 13, "inward" refers to the radial direction toward the centerline axis X, and "outward" refers to the radial direction away from the centerline axis X.

[0014] In the structure of a traditional grenade, the rubber ring is fixed at a certain position in the housing tube to stop a certain number of bullets in the housing tube. The user can trigger the compressed air in the storage chamber to fire all the bullets. Figures 2A and 2B show one way of firing a bullet, in which the rubber ring 11 is pressed against the front end of the extension 14 during the firing process. Unlike the traditional technology, in this firing method, only the leading bullet 901 of each housing tube 13 needs to overcome the resistance of the rubber ring 11. The subsequent bullets (for example, the subsequent seven bullets of each tube) are not affected by the rubber ring 11. During the firing process, the gas enters each housing tube 13 evenly through the inlet 132 at the rear end and fires the bullets there. The dimensions and shape of the extension 14 are set so that the rubber ring 11 does not interfere with the trajectory 133 after firing. For example, when the rubber ring 11 is located on the annular surface adjacent to the opening 131 of the housing tube (hereinafter referred to as "position L1"), it can prevent the bullet from falling. The guide surface 142 of the extension 14 is set so that the rubber ring 11 can contract inward when it is pushed from position L1 to the front end of the extension 14 (hereinafter referred to as "position L2"). Therefore, the outer diameter of the soft rubber ring 11 at position L1 is larger than that of the rubber ring 11 at position L2, and it can expand or contract inward or outward when sliding between positions L1 and L2.

[0015] The conical tubular nozzle construction provides a partially inwardly converging annular surface which allows the rubber ring 11 to splay outwards or retract as it moves over it. The annular extension 14 includes an inwardly converging guide surface 142 (which forms a partially inwardly converging annular surface) which allows the rubber ring 11 to splay inwards as it moves towards the forward end of the guide surface 142. The guide surface 142 extends forwardly and inwards from (and at an angle to) the support surface 141 which allows the rubber ring 11 to splay outwards or retracts as it moves over this annular surface.

[0016] Figures 3A, 3B and 3C show a method of loading bullets, which includes the following steps: When the rubber ring 11 is at position L2 (see Figure 3A), load a predetermined number of bullets into each containing tube 13. The size and shape of the annular extension are designed so as not to interfere with the bullet's trajectory 133 when the rubber ring 11 is at position L2 (for example, when the rubber ring 11 is pushed to position L2, it does not overlap with the trajectory 133 in the radial direction). Then, push the rubber ring 11 from position L2 to position L1 (see Figure 3B). The annular extension is designed so that the predetermined number of bullets does not fall out when the rubber ring 11 is at position L1. During the firing process, when the grenade releases compressed air (see Figure 8B), the bullet pushes the rubber ring 11 from position L1 to L2, causing it to shrink inward along the annular guide surface 142. By using a tubular nozzle body with a retracting guide surface 142, the rubber ring 11 can slide inwardly contracting or outwardly expanding between at least two positions. Because force is no longer required to force the bullet through the rubber ring 11, the user can more quickly reload the next round after firing.

[0017] In one embodiment shown in FIG. 4A, a bullet loading device 30 is provided. The device is for quickly loading a large number of bullets into each of the housing tubes 13 of the toy grenades at one time. The device includes a body having a cup-shaped portion 31 at an upper portion and a discharge portion 32 at a lower portion. The cup-shaped portion 31 has an opening larger than the opening of most BB bullet packaging bottles 900 and is for receiving the bullets. The lower discharge portion 32 has a number of bullet discharge tubes 301 arranged in an annular shape for outputting the bullets into the housing tubes 13 of the bullet cases 10. The bullet loading device 30 preferably includes a movable block 33 installed at the bottom of the bullet discharge tubes 301, which can prevent the bullets from falling or can be opened to output the bullets.

[0018] As shown in Figure 4B to Figure 4C, a loading method is provided, which includes the following steps: pull the elastic rubber ring 11 to position L2, load a sufficient amount of bullets into the loading device 30, receive a predetermined amount of bullets from each receiving tube 13, block the opening of each bullet discharge tube 301, and then remove the loading device 30. Push the elastic rubber ring 11 from position L2 to position L1 (see Figure 4D), and when the rubber ring 11 is adjacent to the front end of the opening of the hole at this predetermined position L1, it can block the drop of the bullets. Here, all the annular extensions at the front end of the bullet case include an inwardly inclined guide surface, and when the rubber ring 11 moves to the front end (L2) of the guide surface, the rubber ring 11 can shrink inward.

[0019] As shown in FIG. 4E, the loading device 30 includes a plurality of bullet ejection tubes 301 corresponding to the aforementioned housing tubes 13 (i.e., each corresponding bullet ejection tube 301 of the loading device 30 shares the same ballistic trajectory 133 with the cylindrical bullet case housing tube 13). The depth of the bullet ejection tubes 301 is marked as D1, where the depth of D1 is equal to the height of a given quantity of bullets stacked in the housing tube 13.

[0020] As shown in FIG. 4F and FIG. 4G, the loading device 30 can include a rotating structure 302 adjacent to the bottom opening of the bullet canal 301 for allowing or blocking the BBs from receiving the bullets through the bottom opening of the bullet canal 301 of the loading device 30. The rotating structure 302 can rotate between a position R1 and a position R2, where the position R1 prevents the bullets from escaping, and the position R2 does not interfere with the bullet's trajectory. The rotating structure 302 is symmetrical about the centerline axis X and has an outer periphery 310 around which are a plurality of annularly arranged blocking portions 311 extending inwardly from the outer periphery 310, whereby the rotating structure 302 prevents the BBs from falling when the rotating structure 302 is in the position R1, and does not interfere with the bullet's trajectory when the rotating structure 302 is in the position R2.

[0021] As shown in Figures 4H and 4I, the rotating structure 302 can also include an annular wall 312 that extends upwardly from the outer periphery 310 about a centerline axis X. The annular wall 312 can include a plurality of annularly disposed extensions 313 that extend radially outwardly from an outer surface of the annular wall 312. The extensions 313 can be useful to assist with assembly or positioning requirements.

[0022] As shown in FIG. 4J, the loading device 30 can have multiple compartments 305 separated by multiple annularly arranged partition walls 307, which can distribute the projectiles to different compartments. As shown in FIG. 4K and FIG. 4L, according to another embodiment (e.g., the Spawner grenade loader extruded by ACETECH), each partition wall 307 of each compartment 305 has a curved shape toward the upper opening 306 of the projectile canal 301. The loading device 30 can also include annularly arranged shorter partition walls 308, which are located between two longer partition walls 307 and near each upper opening 306, and help to guide the projectiles more smoothly into the upper opening 306 of the projectile canal 301.

[0023] After a sufficient number of bullets are loaded into the loading device 30, the user can put the lid 304 on top and then shake the loading device 30 to make the bullets go into the bullet tubes 301 more smoothly. The outer shell of the loading device 30 can be made of a transparent material, so that the user can easily observe whether each bullet tube 301 contains the expected number of bullets (corresponding to the expected number stacked in the storage tube 13). Based on the above, the loading device 30 for loading a large number of bullets into a toy grenade can include a main body having a cup-shaped portion 31 at the top and a discharge portion 32 at the bottom. The upper cup-shaped portion 31 has a plurality of compartments 305 arranged in a ring shape, which are divided by a plurality of partition walls 307 arranged in a ring shape and are used to distribute the bullets into different compartments.

[0024] 4L and 4M, the discharge section 32 includes one central opening 321. The shape of the central opening 321 fits the head of the toy grenade 100, 200. The central opening 321 is symmetrical about the centerline axis X, and around it are arranged a number of annularly arranged bullet discharge tubes 301 for receiving bullets through a top opening 306 where each bullet discharge tube 301 connects with a section 305 of the upper cup-shaped section 31. A bottom opening 303 is arranged at the bottom of each bullet discharge tube 301. The discharge section 32 can include a rotating structure 302 having a number of annularly arranged blocking portions 311 near the bottom opening 303 of the bullet discharge tubes 301. It is designed to rotate between a position R1 and a position R2 to block the output of the bullet at the position R1, but not to interfere with the trajectory of the bullet at the position R2.

[0025] Considering that, a bullet loading device 30 for applying to cylindrical bullet cases with a special hole opening is provided. The device includes a body having a cup-shaped portion 31 at the top and an ejection portion 32 at the bottom (see FIG. 4L). The cup-shaped portion 31 includes a number of annularly arranged compartments 305, which are separated by a number of annularly arranged partition walls 307 (see FIG. 4J); the ejection portion 32 includes a central opening 321 (see FIG. 4M), which is symmetrical with respect to a central axis X (see FIG. 4L), around which a number of annularly arranged bullet cannulae 301 are installed, allowing each bullet cannulae 301 to receive a bullet through a top opening 306 connected to the upper cup-shaped portion 31. A user can input a bullet into each bullet cannula 301 by placing a cover 304 on the loading device 30 and shaking it. When coupling the loading device 30 to a toy grenade having a cylindrical bullet case as described above, the user can input all the bullets into the multiple annularly arranged storage tubes 13 at once.

[0026] In view of this, a method for loading a bullet is provided that is applicable to a bullet loading device 30 having a special structure. The method includes the following steps: a. providing at least one toy grenade 100. The toy grenade 100 has a cylindrical bullet case 10, which has a central hole 12 around which a plurality of annularly arranged receiving tubes 13 are set for receiving a bullet in each receiving tube 13. b. providing a bullet loading device 30 for a toy grenade. It includes a body having a cup-shaped portion 31 at an upper portion and an output portion 32 at a lower portion. The cup-shaped portion 31 has a plurality of annular compartments 305, which are divided by a plurality of annular partition walls 307. The output portion 32 has a central opening 321, which is symmetrical with respect to a central axis, and a plurality of annularly arranged bullet tubes 301 are set around which each bullet tube 301 can receive a bullet through the upper opening connected to the upper cup-shaped portion 31. The operation of the bullet loading device 30 is as follows: load a sufficient amount of bullets into the bullet loading device 30; receive a predetermined amount of bullets from the storage tube 13 of each toy grenade 100; block the opening of each bullet discharge tube 301 of the bullet loading device 30, and then remove the bullet loading device 30. Here, the depth of each bullet discharge tube 301 is the same as the height of the predetermined number of bullets stacked in the storage tube 13. That is, each bullet discharge tube 301 contains a predetermined number of bullets at the same height as the predetermined number of bullets stacked in the storage tube 13 (see FIG. 4E).

[0027] See Figures 5A, 5B and 5C. According to another embodiment, the toy grenade 200 can be used to fire multiple projectiles at once and includes a cylindrical projectile case 501 having a central bore 12 around which are disposed a number of annularly arranged housing tubes 13 for receiving a predetermined quantity of projectiles in each housing tube 13. The cylindrical projectile case 501 also includes a multi-stage annularly arranged support surface 541 adjacent the forward opening 131 of each housing tube and extending about the centerline axis X to provide a discontinuous annular surface 1 for mounting a soft rubber ring 11 thereon.

[0028] As shown in Figures 5C and 5D, the bullet case 501 also includes a number of annularly arranged guide surfaces 542 extending from and inclined to each support surface 541, forming another discontinuous annular surface 2 on which the rubber ring 11 can move outwardly or inwardly. A number of annularly arranged extensions 514 essentially extend around the centerline axis X and form the hole opening 121. There are gaps 15 between each of the annularly arranged extensions 514 (see Figures 5E, 5F, and 5G), through which the rubber ring interface 20 (hereinafter referred to as "interface 20") can be movably located at the opening 121.

[0029] 6A and 6B show an example of a grenade 200 including an interface 20. The rubber ring 11 can slide between positions L1 and L2. When the grenade 200 releases the compressed air, the bullet moves forward and then pushes the rubber ring 11 from position L1 to L2. The interface 20 can block the rubber ring 11 at a predetermined position (e.g., position L2). Then the grenade 200 can load a bullet again. When the rubber ring 11 is at position L2, the trajectory 133 shown in FIG. 6C is not interfered with, which makes it more convenient for users to load a bullet. See FIG. 6D, FIG. 6E and FIG. 6F. The interface 20 can have multiple fins 21 on its outer circumferential surface. These fins 21 are arranged at a certain distance apart and can be inserted into the gap 15 between any two extensions 514 (see FIG. 6E), which can push the rubber ring 11 to a predetermined position (e.g., position L1). Adjacent each fin 21 is a second support surface 212 circumscribing the centerline axis X with an outwardly sloping rear portion 211 extending from the second support surface 212 toward the front end of the interface 20 (see FIG. 6F). The aforementioned annularly-disposed second support surfaces 212 provide a third discontinuous annular surface for receiving and supporting the rubber ring 11 at a predetermined location.

[0030] The multiple rearward facing portions 211 are set as follows: when the interface 20 is inserted into the opening 121 of the hole of the cylindrical bullet case 501 (see Fig. 5E and Fig. 5F), the rearward facing portions 211 can cooperate with the guide surface 542 to push the rubber ring 11 to the position L1 (i.e., the rubber ring 11 is located on the discontinuous first annular surface). The multiple rearward facing portions 211 can have the same inclination angle with respect to the center line axis X (but are not limited to this). The multiple fins 21 are set at intervals from each other so as not to interfere with the trajectory 133 when the bullet is fired. The height 4 (with respect to the center line axis X) of the fin 21 can be set higher than the inner radius 5 (with respect to the center line axis X) of the tube diameter of the cylindrical bullet case 501 (the height 4 is greater than the distance from the lowest point of the trajectory 133 shown in Fig. 6F to the center line axis X). When pressed in, the fins 21 of the interface 20 can push the rubber ring 11 up to position L1.

[0031] As shown in Figures 6G and 6H, the shape of the annular array of fins 21 can have different designs for assembly and positioning purposes. The interface 20 can also include rear fins 22 for some of the annular array of fins 21. Each rear fin 22 includes a lead-out section 221 facing the rearward fin 211 for leading the rubber ring 11 as needed. Each lead-out section 221 extends radially outward from the centerline axis X. Optimally, the lead-out section 221 has a portion that is approximately perpendicular to the centerline axis X and a sloped portion close to the second support surface 212. The front of the interface 20 can be provided with a front hole 23 for allowing a user to use the airflow opening 411 shown in Figure 8C.

[0032] In view of this, in one embodiment of the grenade 200 including the interface 20, the grenade 200 may include a cylindrical bullet case including a plurality of annularly arranged guide surfaces 542 arranged to contract the rubber ring 11 inwardly as it is forced against the front end of the guide surfaces 542. The interface 20 includes a plurality of fins 21 arranged in annular fashion on the outer circumferential surface of the interface 20. Each fin 21 has a second support surface 212 extending about a centerline axis X and a rear portion 211 extending outwardly and at a forward incline from the second support surface 212. The plurality of annularly arranged second support surfaces 212 form a third discontinuous annular surface and are used to receive and support the rubber ring 11 at a predetermined position. The interface 20 also includes a number of rear fins 22, which are arranged opposite a number of annularly arranged fins 21 that can be inserted into a number of gaps 15 (see Figs. 5F and 5G). Based on this, the interface 20 can be placed in the bullet case hole opening 121 and can slide axially forward or backward to push or pull the rubber ring 11 to a predetermined position (e.g., position L1 or L2).

[0033] As shown in Figures 7A and 7B, the bullet case 501 can set a recess 16 between adjacent storage tubes 13, which allows the aforementioned rear fin 22 to be inserted. In addition, the grenade 200 can provide two predetermined positions for the interface 20 to interact with the rubber ring 11. As shown in Figure 7B, when the rubber ring 11 is at position L1, it can be set as the first set position of the interface 20, in which case the interface 20 is returned to a sufficiently low position (hereinafter referred to as "position P1"), so that the rear fin 22 does not interfere with or contact the rubber ring 11. However, a later user can use the rear fin 22 to pull the rubber ring 11 forward from the recess 16, and then stop the interface 20 at a high position at the front end (hereinafter referred to as "position P2"), which is higher than position P1. As shown in Figure 7C, when the user uses the interface 20 to push the rubber ring 11 from L2 to L1, the position of the interface 20 temporarily becomes the lowest position (hereinafter referred to as "position P0"). The user can then return the interface 20 to position P1. In view of the above requirements, the grenade 200 also includes a switch component 70 (see FIG. 7D) for axial movement of the interface 20 relative to the bullet case 501, which can be fixed in a forward position (position P2), a return position (position P1), or a temporary position (position P0). The switch component 70 can be positively connected to the interface 20.

[0034] As shown in FIG. 7E, the switch part 70 includes a spring 701 for providing a resilient force, and a columnar first body 71 has a number of teeth 711 arranged in an annular shape. The teeth 711 are arranged continuously around the periphery of the lower opening of the first body 71 and extend toward the second body 72. The second body 72 has a number of guide ribs 721 on the outside. The ends 722 of the guide ribs 721 are beveled. The beveled ends 722 of the guide ribs 721 are designed to mate with the teeth 711 arranged in an annular shape of the first body 71. When manual pressure and the resilience of the spring act simultaneously, the guide ribs 721 provide a twisting force to the first body 71.

[0035] FIG. 7F illustrates the interaction of the components in one embodiment of the grenade 200. The inner surface of the cylindrical shell 501 is provided with an annular guide groove 51 and an oblique guide surface 52 of different lengths, which are arranged to surround the first body 71 and the second body 72 in an annular manner (after the shell 501 is assembled with the switch part 70). The vertically arranged guide groove 51 ensures that the first body 71 of the switch part 70 moves only upwards and / or downwards in a certain stroke. Meanwhile, the second body 72 can also move vertically and around the axis of rotation. The guide groove 51, the oblique guide surface 52, and the annular teeth 711 of the first body 71 jointly control the twisting movement of the second body 72 (disposed like a rotor) after the manual pressure is relieved. First, the necessary horizontal force component is generated between the first body 71 and the second body 72, and then between the second body 72 and the oblique guide surface 52. In the cylindrical shell 501, a first vertical movement between positions P1 and P0 and a second vertical movement between positions P2 and P0 are provided using guide grooves 51 of different lengths. Also, the second body 72 (like a rotor) can be repeatedly moved in a given vertical position by the oblique guide surface 52 that provides horizontal movement through an inclined path and the means for limiting the horizontal position. Thus, by switching between the manual pressure and the return force of the spring 701, the second body 72 performs a gradual twisting movement.

[0036] FIG. 7G illustrates the mechanism of the torsional movement. The continuous upward pressure of spring 701 generates a horizontal force component due to the coupling between the angled end 722 and the annularly arranged teeth 711. This force is used for the torsional movement. The torsional movement allows interface 20 to have multiple states of extension-insertion and contraction-insertion with respect to shell 501. In other words, the interaction between the angled surfaces of each component generates a horizontal force component, providing the torsional movement of second body 72.

[0037] As shown in FIG. 7H, the bullet case 501 can include a number of annular guide grooves 51, which are separated by a number of annularly arranged main pillars 511 on the inner surface. The bottom of each of the main pillars 511 is provided with an inclined guide surface 52. Each of the main pillars 511 can also provide a horizontal movement restriction means through the side of the pillar. The bullet case 501 also includes a number of annularly arranged flat pillars 512 (extending inward from the inner surface of the bullet case 501) located between two of the main pillars 511. The bottom of each of the flat pillars 512 has an inclined guide surface 53. The inclined guide surface 52 of the main pillars 511 and the inclined guide surface 53 of the flat pillars 512 have essentially the same inclination angle. The radial height of the flat pillars 512 is lower than the radial height of the main pillars 511 to provide a stop position for the guide rib 721 and a shorter first vertical movement (vertical movement from position P1 to P0). The above is an application of an embodiment of the interface 20 and the switch component 70, which includes a bullet case 501 having a number of annularly arranged main posts 511 and flat posts 512 to form a number of annular guide grooves 51, and a user can axially move the interface 20 relative to the bullet case 501 among a front end position (P2), a retracted position (P1), and a temporary position (P0).

[0038] As shown in Figures 8A and 8B, the toy grenade includes a cylindrical bullet case 501 (or bullet case 10); a gas storage chamber 40 connected to the bullet case, which defines a space for storing gas by a first inner edge 401 at the front and a second inner edge 402 at the rear; and a rod assembly 41, which is hollow and housed within the central diameter of the cylindrical bullet case 501. The rod assembly 41 can move between a fifth position 5 and a sixth position 6 within the storage chamber 40. When the rod assembly 41 is in the fifth position 5, it seals the storage chamber 40 and prevents the compressed air from blowing forward. However, when it moves toward the sixth position 6, it releases compressed air for instantly blowing the bullet in the bullet case. Unlike the assembly described in US Patent US8517005B2, this embodiment is set to move backward instead of moving forward. This ensures that the rod assembly 41 does not interfere with the aforementioned interface 20 during the process of firing.

[0039] As shown in Figures 8C and 8D, the rod assembly 41 includes an air intake rod 410 disposed at its front side. The front end of the air intake rod 410 has an air intake port 411, and the rear end of the air intake rod 410 has a front radial extension ring 42 and a rear radial extension ring 43. At least one air outlet hole 44 is provided between the front radial extension ring 42 and the rear radial extension ring 43. The front radial extension ring 42 and the rear radial extension ring 43 are respectively fitted with sealing rings 421 and 431 around the periphery thereof, so that the sealing rings 421 and 431 fit the first inner edge 401 and the second inner edge 402 of the storage chamber 40 to ensure airtightness of the storage chamber 40. In particular, the front side of the front radial extension ring 42 has a smaller and narrower flange 422, and the rear side has a larger and wider flange 423. This design ensures that the rod assembly 41 only moves rearward when the compressed air in the storage chamber 40 is released.

[0040] Compressed air enters the storage chamber 40 through the air intake 411 and accumulates in the chamber through the air outlet 44. During activation, a series of primer parts (see FIG. 8G) are designed to guide the rod assembly 41 backward. This action causes the forward radial extension ring 42 to move away from the first inner edge 401 of the storage chamber 40, releasing the compressed air in the storage chamber 40. Based on the above, an embodiment of the grenade 200 including the rod assembly 41 includes a cylindrical bullet case, which has a guide surface 542 arranged in a plurality of rings in front of the cylindrical nozzle, and the inner surface of the bullet case has guide grooves 51 arranged in a plurality of rings and of different lengths; an interface 20, a switch part 70, and a rod assembly 41. The rod assembly 41 is configured to move backward during the ejection process, so that the rod assembly 41 does not interfere with the interface 20 when fired.

[0041] As shown in FIG. 8E, the primer part of the toy grenade 200 is located at the rear of the storage chamber 40 and is composed of at least one spring 81, one primer 82, and a number of steel balls 83, and serves to guide the movement of the rod assembly 41 during the firing process. As shown in FIG. 8F, the rod assembly 41 includes a rod 45 extending rearward from the center of the forward radial extension ring 42. An intermediate radial extension ring 46 extends radially from the rear end of the rod 45. A cylindrical wall 47 extends rearward from the outer edge of the intermediate radial extension ring 46 symmetrically about the central line axis X. The aforementioned rear radial extension ring 43 extends outward from the rear end of the cylindrical wall 47, and the inner edge of the aforementioned rear radial extension ring 43 has an outwardly extended annular surface 48, which extends rearward and outward from the rear opening of the cylindrical wall 47. The intermediate radial extension ring 46, cylindrical wall 47, and outwardly extended annular surface 48 define a cylindrical space 432 which receives the primer part. During firing, the primer part acts as a guide for the rearward movement of the rod assembly 41 through interaction with the outwardly extended annular surface 48 and the bottom cylindrical wall 403 (see FIG. 8E).

[0042] Figure 8G shows several different states of the primer part and rod assembly. In state A, the reservoir 40 fills with compressed air, resulting in pressure 400 on the rod assembly, trying to move it backwards. However, the steel ball 83, the outward facing annular surface 48, the top surface of the bottom cylindrical wall 403, and the faces of the primer 82 lock the rod assembly. In state B, applying a motive force 800 to the primer 82 to push it forward provides a space (groove) for the steel ball 83 to slide inward. The steel ball 83 is then pushed inward until it reaches a position in state C. At this point, the rod assembly is free to move backwards (a state where pressure 400 is not enough to move the rod assembly further backwards or to hold it in its position) until too much compressed air is released (through gap 87 in Figure 8J) and pressure 400 is no longer sufficient. When too much compressed air is released, the pressure drops to a level where the rod assembly cannot be moved further backwards. In other words, the rod assembly stops moving backwards because there is not enough pressure propelling it forward.

[0043] Referring to Figure 8H, Figure 8I, and Figure 8J, the primer 82 is composed of an upper radial extension 821, an outer cylindrical wall 822, an outer annulus retracted surface 823, and a ring-shaped recess 824. The primer 82 also has a cylindrically shaped internal space 825 for accommodating the spring 81. The upper radial extension 821 extends from the top of the outer cylindrical wall 822, and the orthogonal angle of the upper radial extension 821 provides a convenient way for fixing the steel ball 83. The outer annulus retracted surface 823 extends rearward and inward from the rear end of the outer cylindrical wall 822, providing a reduced space for the ring-shaped recess 824. The cross-sectional view in Figure 8J (only some components are shown) shows that when the primer 82 is pushed forward, the rod assembly 41 moves rearward, and the compressed air spurts forward from the gas storage chamber 40 through the gap 87.

[0044] The various embodiments described above should not be limited to the details described but should be considered broad in scope in the claims. For example, a toy grenade can include a cylindrical multi-tube projectile case including a plurality of circumferentially disposed containment tubes 13 and a plurality of circumferentially disposed extensions 514. Each extension 514 can include a guide surface 542 that allows the rubber ring 11 to contract inwardly (reducing in diameter) as the rubber ring 11 moves toward the front end of the guide surface 542.

[0045] In another embodiment, the toy grenade can include a bullet case for a flexible rubber ring 11 slidably mounted on a discontinuous annular surface, the bullet case having a central bore symmetrical about a central axis X, with an inner periphery 101 around which a plurality of housing tubes 13 are arranged, each housing tube 13 being capable of receiving and loading a bullet through its front end opening 131 (each housing tube also having a rear end inlet 132). In some embodiments, the bullet case includes a plurality of circumferentially arranged extensions 514 near the front end opening 131 and the inner periphery 101, each extension 514 being arranged to receive and support the rubber ring 11 via a plurality of annularly arranged support surfaces 541 on the side of each front end opening 131 towards which it faces. Each extension 514 includes a guide surface 542 at the lower edge of each support surface 541, the guide surface 542 being inclined from the inner periphery 101 towards the central axis X. A plurality of circumferentially disposed support surfaces 541 extend generally about central axis X and provide a discontinuous annular surface 1 for receiving and supporting rubber ring 11. Guide surfaces 542 are positioned to permit rubber ring 11 to contract inwardly as rubber ring 11 is moved from support surfaces 541 toward a forward end of guide surfaces 542.

[0046] The toy grenade may further include the bullet case as described above, having a central bore around which a plurality of housing tubes 13 are disposed, each housing tube 13 being adapted to receive a predetermined quantity of bullets. The bullet case may further include a plurality of support surfaces 541 (extending about a central axis X) disposed near the front end opening 131 of each housing tube 13, providing a discontinuous annular surface 1 for mounting the rubber ring 11. Also included are a plurality of circumferentially disposed guide surfaces 542 extending from and forming an angle therewith each support surface 541, providing a second discontinuous annular surface 2, allowing the rubber ring 11 to contract or expand as it moves over the annular surface. The plurality of circumferentially disposed extensions 514 extend generally about the central axis X and define a central bore opening 121 of the bullet case, through which a space is defined for dynamic mounting of the interface 20. The plurality of circumferentially disposed extensions 514 are spaced apart from each other by a plurality of gaps 15.

[0047] In another embodiment, the toy grenade includes the bullet case, which has a plurality of annularly arranged receiving tubes and extensions 514, and the extensions 514 are configured to slide-mount the rubber ring 11. The interface 20 is located next to the central opening 121 of the bullet case and can slide axially to move the rubber ring 11 to an ideal position. The switch component 70 is for moving the interface 20 axially along the bullet case between the ideal positions. The gas storage chamber 40 is in communication with the bullet case. Also, together with the rod assembly 41, each extension 514 of the bullet case has an inwardly inclined guide surface 542 so that the rubber ring 11 can be contracted inwardly when moving toward the front end of the guide surface 542. In another embodiment, the toy grenade includes the bullet case, which has a plurality of annularly arranged extensions 514, and each extension 514 has a support surface 541 and an inwardly inclined guide surface 542. The aforementioned annularly disposed support surface 541 extends generally about the central axis X and defines an annular surface for slidingly mounting the rubber ring 11. The inwardly inclined guide surface 542 is configured to allow the rubber ring 11 to contract inwardly as it moves from the support surface 541 towards the front end of the guide surface 542.

[0048] In view of this, the method of using the bullet case described above includes the following steps: a. Pull the elastic rubber ring 11 from the annularly arranged support surface 541 to the front end of the guide surface 542; b. Receive and load bullets from each of the receiving tubes 13; c. Push the rubber ring 11 back from the front end of the guide surface 542 to the support surface 541. When the rubber ring 11 is located on the support surface 541, it is set to stop a predetermined number of bullets in the receiving tube 13. When the user wants to safely remove and take out all the bullets, he or she only needs to move the rubber ring 11 away from the support surface 541.

[0049] The various exemplary embodiments described above are subject to various modifications, variations, and the like, with the scope of the invention being determined solely by reference to the claims appended hereto. Those of skill in the art will readily recognize a variety of non-critical parameters that can be changed, altered or modified to produce essentially similar results. [Item 1] 1. A toy grenade comprising a cylindrical bullet case including a number of annularly arranged containment tubes and a number of annularly arranged extensions configured for mounting rubber rings. [Item 2] 1. A toy grenade comprising a cylindrical bullet case having a central bore, the cylindrical bullet case including a number of annularly arranged housing tubes for housing bullets about the bore, and a number of annularly arranged support surfaces adjacent a forward opening of each of the housing tubes, extending about a centerline and providing an annular surface for mounting a rubber ring. [Item 3] A bullet loading device for application to the toy grenade described in item 2, the loading device including a body having an upper cup-shaped portion and a lower discharge portion, the cup-shaped portion being divided into a number of peripherally arranged compartments, each compartment being separated by a number of peripherally arranged partition walls, the discharge portion having a central opening symmetrical about a central axis, around which a number of peripherally arranged bullet discharge tubes are installed through upper openings of the discharge tubes connected to the upper cup-shaped portion for receiving bullets. [Item 4] A method of loading a bullet including the bullet loading device includes at least one toy grenade and a bullet loading device for one toy grenade, the toy grenade having a cylindrical bullet case, the cylindrical bullet case having a housing tube for housing a number of bullets arranged circumferentially around a central hole, the bullet loading device including a body having an upper cup-shaped portion and a lower discharge portion, the cup-shaped portion being divided into a number of circumferentially arranged compartments, each compartment being separated by a number of circumferentially arranged partition walls, The discharge section has a central opening and is symmetrical with respect to the central axis, and a number of bullet discharge tubes arranged around it are installed through the upper openings of the discharge tubes connected to the upper cup-shaped section for receiving bullets, and the bullet loading device performs the following steps: loading a number of bullets into the bullet loading device; receiving a predetermined number of bullets from the storage tube of each toy grenade; and blocking the openings of the bullet discharge tubes of each bullet loading device, and then removing the bullet loading device. [Item 5] 1. A toy grenade comprising a cylindrical bullet case including a number of containment tubes and an annular extension including a support surface extending about a centerline and providing a portion of the annular surface for mounting a rubber ring.

Claims

1. A toy grenade, comprising a cylindrical bullet case including a number of annularly arranged containment tubes and a number of annularly arranged extensions configured for mounting a rubber ring; The extension has an inwardly sloping guide surface to allow the rubber ring to contract inwardly as it moves toward the front end of the guide surface. Toy grenade.

2. A toy grenade comprising a cylindrical bullet case having a central bore, the cylindrical bullet case having a number of annularly arranged housing tubes for housing the bullets, the number of annularly arranged housing tubes being adjacent to the forward opening of each housing tube ... a guide surface extending from the support surface and inwardly sloping so that the rubber ring can contract inward as it moves toward a front end of the guide surface. Toy grenade.

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