Toy claw knife with self-locking mechanism

Abstract

The utility model relates to the technical field of toy manufacturing, and discloses a toy claw cutter with a self-locking mechanism, which comprises a claw cutter shell, a telescopic self-locking component is arranged in the claw cutter shell, the telescopic self-locking component comprises a speed reducing motor, an output shaft of the speed reducing motor is fixedly connected with a reciprocating screw rod, and the reciprocating screw rod is fixedly connected with the claw cutter shell. A linear groove is formed in the surface of the reciprocating lead screw, the end of the reciprocating lead screw is rotationally connected with the inner wall of the claw cutter shell, and a lead screw sliding block is arranged on the outer surface of the reciprocating lead screw. According to the utility model, the linear groove is formed in the surface of the reciprocating screw rod and is matched with the internal thread on the inner surface of the screw rod sliding block, and when the screw rod sliding block moves to the linear groove, the linear groove and the screw rod sliding block are meshed to realize locking, so that the plastic claw knife model cannot retract randomly under the action of external force in an extension state, and the toy is kept in a stable state in a use process; the use safety and reliability of the toy are improved, and the influence on a user caused by accidental retraction of the plastic claw knife model is avoided.

Description

Technical Field

[0001] This utility model relates to the field of toy manufacturing technology, and in particular to a toy claw knife with a self-locking mechanism. Background Technology

[0002] A toy claw knife is a recreational product for children or teenagers that simulates the shape of a real claw knife. It typically consists of a shell, a retractable claw knife model, and a drive mechanism, and is widely used in role-playing, interactive games, and other scenarios. Users operate the drive mechanism to extend and retract the claw knife model within the shell, enhancing the fun and immersion during play. These toys must be designed to balance safety and playability, ensuring users enjoy entertainment while avoiding accidental injuries.

[0003] In existing toy claw knife designs, a structure typically employs a motor-driven lead screw and slider to extend and retract the claw knife model. When the claw knife is needed, the user starts the motor, causing the lead screw to rotate, which in turn extends the lead screw, slider, and claw knife model outwards. When it needs to be stored, the motor reverses, causing the claw knife to retract into the outer shell. For example, some toy claw knives achieve their extension and retraction function through a common threaded transmission; after the motor stops rotating, the claw knife model remains in its current position due to friction.

[0004] Existing claw knife models, when extended, rely solely on threaded friction or simple snap-fit ​​for fixation, making them prone to accidental retraction upon impact or pulling. For example, if a child is playing and the claw knife suddenly retracts, it could pinch their hand, posing a safety hazard. Secondly, prolonged use leads to thread wear and reduced friction, decreasing the stability of the extended claw knife model and affecting its lifespan and user experience. Therefore, this paper proposes a toy claw knife with a self-locking mechanism to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a toy claw knife with a self-locking mechanism, which aims to improve the problems of accidental retraction, unstable locking, and poor safety of claw knives in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a toy claw cutter with a self-locking mechanism, comprising a claw cutter shell, wherein a telescopic self-locking assembly is provided inside the claw cutter shell, the telescopic self-locking assembly includes a reduction motor, the output shaft of the reduction motor is fixedly connected to a reciprocating lead screw, a slotted groove is formed on the surface of the reciprocating lead screw, the end of the reciprocating lead screw is rotatably connected to the inner wall of the claw cutter shell, a lead screw slider is provided on the outer surface of the reciprocating lead screw, a limiting groove is formed on the inner wall of the claw cutter shell, an internal thread adapted to the reciprocating lead screw is provided on the inner surface of the lead screw slider, the internal thread on the inner surface of the lead screw slider is threadedly connected to the outer surface of the reciprocating lead screw, the surface of the lead screw slider contacts the inner wall of the claw cutter shell, and a plastic claw cutter model is detachably mounted on the outer surface of the lead screw slider via an extension plate and a connecting plate.

[0007] As a further description of the above technical solution: there are two extension plates, two connecting plates, and two plastic claw knife models. The side of the extension plate is an arc-shaped protrusion. The side of both extension plates is fixedly connected to the outer surface of the lead screw slider. An arc-shaped slot is provided on the inner side of the plastic claw knife model. The arc-shaped protrusion on the side of the connecting plate is engaged with the arc-shaped slot provided on the plastic claw knife model.

[0008] As a further description of the above technical solution: the surface of the reciprocating lead screw is machined with trapezoidal threads.

[0009] As a further description of the above technical solution: a glove is fixedly connected to the outer wall of the claw knife shell.

[0010] As a further description of the above technical solution: the outer wall of the claw knife shell is connected to a protective sleeve, and the outer wall of the protective sleeve is in contact with the side of the plastic claw knife model adjacent to it.

[0011] As a further description of the above technical solution: a mounting shell is fixedly connected to the outer wall of the claw cutter housing, and the reduction motor is fixedly installed on the inner wall of the mounting shell.

[0012] As a further description of the above technical solution: the outer wall of the extension plate is slidably connected to the inner wall of the limiting groove through a protrusion.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by opening a straight groove on the surface of the reciprocating lead screw and cooperating with the internal thread on the inner surface of the lead screw slider, when the lead screw slider moves to the position of the straight groove, the two engage and lock, so that the plastic claw knife model will not retract arbitrarily due to external force in the extended state, ensuring that the toy maintains a stable shape during use, improving the safety and reliability of the toy, and avoiding the impact on the user caused by the accidental retraction of the plastic claw knife model.

[0015] 2. In this utility model, the cooperation between the straight groove and the lead screw slider makes the extension and retraction operation of the plastic claw knife model simpler and more controllable. The extension and locking of the plastic claw knife model and the retraction and unlocking can be achieved simply by controlling the forward and reverse rotation of the reduction motor. No additional complicated operation steps or devices are required, which reduces the difficulty of use, improves the convenience of using the toy, and enhances the user's operating experience.

[0016] 3. In this utility model, each connecting plate and the side adjacent to the plastic claw knife are connected by an arc-shaped bulge and an arc-shaped groove. This design makes the disassembly and replacement of the plastic claw knife model extremely convenient. When the plastic claw knife model is worn or damaged, the user can quickly replace it without replacing the entire toy, thus reducing maintenance costs. At the same time, users can also replace the plastic claw knife model with different shapes and colors according to their own preferences, realizing personalized customization of the toy and extending the toy's service life and fun. Attached Figure Description

[0017] Figure 1 This is a front view of a toy claw knife with a self-locking mechanism proposed in this utility model;

[0018] Figure 2 This is an internal view of the outer shell of a toy claw knife with a self-locking mechanism proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the reciprocating lead screw, lead screw slider, geared motor, and extension plate of a toy claw knife with a self-locking mechanism proposed in this utility model.

[0020] Figure 4 This is a top sectional view of the lead screw slider of a toy claw knife with a self-locking mechanism proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of a protective sleeve for a toy claw knife with a self-locking mechanism proposed in this utility model.

[0022] Figure 6 This is a partial structural diagram of the lead screw slider, extension plate, and plastic claw knife model of a protective sleeve for a toy claw knife with a self-locking mechanism proposed in this utility model.

[0023] Legend:

[0024] 1. Claw blade housing; 2. Plastic claw blade model; 3. Wearing gloves; 4. Protective cover; 5. Mounting shell; 6. Reciprocating lead screw; 7. Lead screw slider; 8. Connecting plate; 9. Limiting groove; 10. Gear motor; 11. I-shaped groove; 12. Extension plate; 13. Protrusion; 14. Arc-shaped slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a toy claw knife with a self-locking mechanism, including a claw knife shell 1. The claw knife shell 1 provides protection for the internal components and facilitates hand handling. A wearable glove 3 is fixedly connected to the outer wall of the claw knife shell 1, enhancing the grip stability during use. A telescopic self-locking assembly is provided inside the claw knife shell 1, enabling controllable extension, retraction, and locking of the plastic claw knife model 2. The telescopic self-locking assembly includes a reduction motor 10, which provides power output and can switch between forward and reverse rotation. A safety device is fixedly connected to the outer wall of the claw knife shell 1. The housing 5 is fixedly mounted on the inner wall of the housing 5 to ensure that the geared motor 10 does not shift during operation. The output shaft of the geared motor 10 is fixedly connected to a reciprocating lead screw 6, which converts rotational motion into linear motion. The surface of the reciprocating lead screw 6 is machined with a trapezoidal thread, which provides greater transmission efficiency. A slot 11 is opened on the surface of the reciprocating lead screw 6, which is used to cooperate with the lead screw slider 7 to achieve a locking function. The end of the reciprocating lead screw 6 is rotatably connected to the inner wall of the claw cutter housing 1 to ensure that the reciprocating lead screw 6 rotates smoothly.

[0027] Reference Figures 2-4 The reciprocating lead screw 6 has a lead screw slider 7 on its outer surface. The lead screw slider 7 moves in a linear reciprocating motion as the reciprocating lead screw 6 rotates. The inner wall of the claw cutter housing 1 has a limiting groove 9, which guides and limits the movement of the lead screw slider 7. The inner surface of the lead screw slider 7 has an internal thread that matches the reciprocating lead screw 6. This internal thread engages with the trapezoidal thread of the reciprocating lead screw 6 to achieve transmission. The internal thread on the inner surface of the lead screw slider 7 is threaded to the outer surface of the reciprocating lead screw 6. The outer surface of the lead screw slider 7 is in contact with the inner wall of the claw cutter housing 1. The outer surface of the lead screw slider 7 is detachably connected to the plastic claw cutter model 2 via the extension plate 12 and the connecting plate 8. The extension plate 12 and the connecting plate 8 enable the synchronous movement of the lead screw slider 7 and the plastic claw cutter model 2.

[0028] Reference Figure 2 , Figure 4 , Figure 6The system comprises two extension plates 12, two connecting plates 8, and two plastic claw knife models 2. The two plastic claw knife models 2 are symmetrically arranged to achieve synchronous extension and retraction. The sides of both extension plates 12 are fixedly connected to the outer surface of the lead screw slider 7. The sides of the extension plates 12 are arc-shaped bulges. The outer wall of the extension plates 12 is slidably connected to the inner wall of the limiting slide groove 9 through protrusions 13. The four protrusions 13 limit the lead screw slider 7, ensuring that the lead screw slider 7 moves smoothly on the inner wall of the limiting slide groove 9. The inner side of the plastic claw knife model 2 is provided with an arc-shaped slot 14. The arc-shaped bulge on the side of the connecting plate 8 and the arc-shaped slot 14 of the plastic claw knife model 2 are engaged with each other, which facilitates the disassembly and replacement of the plastic claw knife model 2.

[0029] Reference Figure 1 , Figure 5 The outer wall of the claw knife shell 1 is connected to a protective sleeve 4. The protective sleeve 4 is in a tight-fitting state. The outer wall of the protective sleeve 4 is in contact with the adjacent side of the plastic claw knife model 2. The protective sleeve 4 can play a certain protective role during the transportation of the plastic claw knife model 2 from the factory, preventing the plastic claw knife model 2 from being deformed due to excessive impact.

[0030] Working principle: First, after unpacking the toy, remove the protective cover 4 from the toy. Then, the user puts on gloves 3, with a control switch for the forward and reverse rotation of the reduction motor 10 located at the finger position. When the reduction motor 10 rotates forward, the output shaft of the reduction motor 10 drives the reciprocating screw 6 to rotate synchronously. Driven by the trapezoidal thread of the reciprocating screw 6, the screw slider 7 moves linearly along the inner wall of the limiting groove 9 towards the outer side of the claw cutter housing 1 via four protrusions 13. At this time, the screw slider 7 pushes the plastic claw cutter model 2 to extend outward synchronously via the connecting plate 8. When the screw slider 7 moves to the position of the straight groove 11 at the end of the reciprocating screw 6... When the screw slider 7 is engaged and locked with the slot 11, the plastic claw knife model 2 remains fully extended and cannot be pushed directly by external force in this state. When it is necessary to retract the plastic claw knife model 2, the reduction motor 10 is controlled to rotate in the reverse direction, and the reciprocating screw 6 reverses to drive the screw slider 7 to unlock from the slot 11 and move along the trapezoidal thread to the inside of the claw knife housing 1 until the plastic claw knife model 2 is completely retracted into the claw knife housing 1. If it is necessary to replace the plastic claw knife model 2 with a different shape, the arc-shaped protrusion on the extension plate 12 is separated from the arc-shaped groove on the plastic claw knife model 2, and the plastic claw knife model 2 can be quickly disassembled.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A toy claw knife having a self-locking mechanism comprising a claw knife housing (1), characterized in that: The inside of the claw cutter shell (1) is provided with a telescopic self-locking assembly, the telescopic self-locking assembly comprises a speed reducer motor (10), the output shaft of the speed reducer motor (10) is fixedly connected with a reciprocating screw rod (6), a one-shaped groove (11) is formed in the surface of the reciprocating screw rod (6), the end of the reciprocating screw rod (6) is rotatably connected with the inner wall of the claw cutter shell (1), a screw rod sliding block (7) is arranged on the outer surface of the reciprocating screw rod (6), a limiting sliding groove (9) is formed in the inner wall of the claw cutter shell (1), the inner surface of the screw rod sliding block (7) is provided with an inner thread matched with the reciprocating screw rod (6), the inner thread of the inner surface of the screw rod sliding block (7) is threadedly connected with the outer surface of the reciprocating screw rod (6), the surface of the screw rod sliding block (7) is in contact with the inner wall of the claw cutter shell (1), and the outer surface of the screw rod sliding block (7) is detachably provided with a plastic claw cutter model (2) through the extension plate (12) and the connecting plate (8).

2. The toy claw knife with a self-locking mechanism according to claim 1, characterized in that: The number of the extension plate (12), the connecting plate (8) and the plastic claw cutter model (2) is two respectively, the side surface of the extension plate (12) is arc-shaped and protruding, the side surface of the two extension plates (12) is fixedly connected with the outer surface of the screw rod sliding block (7), and the inner side of the plastic claw cutter model (2) is provided with an arc-shaped clamping groove (14).

3. The toy claw knife with a self-locking mechanism according to claim 1, characterized in that: The surface of the reciprocating screw rod (6) is processed with trapezoidal threads.

4. The claw toy knife with self-locking mechanism according to claim 1, characterized in that: The outer wall of the claw cutter shell (1) is fixedly connected with a wearing glove (3).

5. The claw toy knife with self-locking mechanism according to claim 1, characterized in that: The outer wall of the claw cutter shell (1) is connected with a protective sleeve (4), and the outer wall of the protective sleeve (4) is in contact with the side of the plastic claw cutter model (2) adjacent to each other.

6. The toy claw knife with a self-locking mechanism according to claim 1, characterized in that: The outer wall of the claw cutter shell (1) is fixedly connected with a mounting shell (5), and the speed reducer motor (10) is fixedly installed on the inner wall of the mounting shell (5).

7. The claw toy knife with self-locking mechanism according to claim 2, characterized in that: The outer wall of the extension plate (12) is slidably connected with the inner wall of the limiting sliding groove (9) through the protrusion (13).

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