Carbon fiber screwdriver
Patent Information
- Application Number
- CN202522142785.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-10
AI Technical Summary
[0003]为了弥补以上不足，本实用新型提供了一种碳纤维螺钉旋具，旨在改善现有技术中螺丝刀的生产成本高、重量重的问题
1、本实用新型中，铜芯连接杆一端的连接头与旋拧头的凹槽处进行连接，通过无头螺栓进行连接，确保连接稳固，外部碳纤维外壳部分包裹旋拧头的外壁，旋拧头外壁的两个凸块辅助碳纤维外壳的包裹，增强对铜芯连接杆和旋拧头的连接，提升装置牢固性，碳纤维外壳通过连接键与手柄连接，防止铜芯连接杆与外壳转动，手柄内壁的发泡胶内芯固定铜芯连接杆，远离旋拧头一端的限位块限制位移，保障整体结构稳定。
Smart Images
Figure CN224725799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hand tool technology, and in particular to a carbon fiber screwdriver. Background Technology
[0002] Screwdrivers (also known as screwdrivers) are fundamental tools in fields such as mechanical assembly, equipment maintenance, and building decoration. Their performance directly affects work efficiency and user experience. Developing a carbon fiber screwdriver that combines lightweight, high strength, insulation safety, and comfortable operation is an important direction for solving the defects of traditional metal screwdrivers and meeting the needs of modern work scenarios. It has a clear necessity for technological improvement and market application value. Traditional screwdrivers consist of a handle, a shaft, and a cutting head: the handle is easy to grip and apply force, the shaft is made of metal and serves to connect and transmit force, and the cutting head matches the screw slot and has high hardness. Its operation is based on the lever principle and torque transmission. Force is applied through the handle, and the rotational force is converted into torque through the shaft and transmitted to the cutting head, which drives the screw to rotate to tighten or loosen it. The size of the handle affects the amount of torque. Existing screwdrivers consist of a handle, a shaft, and a cutting head. The shaft and cutting head are made of metal steel, such as chrome vanadium steel or spring steel. In actual use, they are costly and heavy. In daily household or industrial maintenance, operators need to hold them for a long time. The excessive weight of the shaft and cutting head can cause hand fatigue and reduce work efficiency. Therefore, a carbon fiber screwdriver is proposed to solve the above problems. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a carbon fiber screwdriver, which aims to improve the problems of high production cost and heavy weight of screwdrivers in the prior art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A carbon fiber screwdriver includes a screwdriver head and a screwdriver bit. A connecting mechanism is provided on one side of the screwdriver head, and a detachable mechanism is provided on one side of the screwdriver bit. The connecting mechanism includes a copper core connecting rod, one end of which is fixedly connected to a connector, the outer wall of which is slidably connected to the inner wall of the screw head, a carbon fiber shell fixedly connected to the outer wall of the copper core connecting rod, a handle fixedly connected to one end of the copper core connecting rod, the outer wall of the end of the copper core connecting rod away from the screw head and the inner wall of the handle being filled with a foam core, a limit component being provided on the outer wall of the copper core connecting rod, and a storage component being provided inside the handle; The above technical solution uses a copper core connecting rod as the core of the connecting mechanism. The copper core connecting rod has both connection and transmission functions. The connector at one end of the copper core connecting rod cooperates with the screw head, and power transmission is achieved through sliding. The carbon fiber shell outside the copper core connecting rod provides protection and enhances structural strength by utilizing its own properties. The handle connected to one end of the copper core connecting rod facilitates hand operation. The foam core at the end of the copper core connecting rod away from the screw head can reduce vibration transmission and enhance sealing.
[0005] As a further description of the above technical solution: The detachable mechanism includes a connecting shell, a spring fixedly connected to the inner wall of the connecting shell, a movable piece fixedly connected to one end of the spring, three connecting blocks fixedly connected to the outer wall of the movable piece, a sliding piece fixedly connected to the outer wall of the three connecting blocks, three inclined blocks fixedly connected to one side of the movable piece, an installation groove fixedly connected to the inner wall of the connecting shell, and three ball bearings movably connected to the inner wall of the installation groove. Through the above technical solution: the detachable mechanism is based on the connecting shell, the inner wall spring provides the restoring force for the moving plate, the moving plate is connected to the sliding plate through three connecting blocks, pushing the sliding plate can drive the moving plate to move, and the three inclined blocks on one side of the moving plate move accordingly. The mounting groove in the connecting shell is used to install the components, and the three ball bearings on the inner wall cooperate with the inclined blocks. When the inclined blocks move, they squeeze the ball bearings to realize the clamping or loosening of the components in the mounting groove, and complete the quick loading and unloading of the components.
[0006] As a further description of the above technical solution: The limiting assembly includes a headless bolt, the outer wall of which is threadedly connected to the inner wall of the connector and the screw head. Two protrusions are fixedly connected to the outer wall of the screw head. Two connecting keys are fixedly connected to the outer wall of one end of the carbon fiber shell. A limiting protrusion ring is fixedly connected to the outer wall of the handle. A limiting block is fixedly connected to the end of the copper core connecting rod away from the bit. Through the above technical solution: the limiting component achieves fixation and limiting through multiple structures. The headless bolt threaded connection has a connector and a screw head, which fix the relative position of the two. The two protrusions on the outer wall of the screw head and the two connecting keys on the carbon fiber shell respectively limit the relative rotation of the carbon fiber shell, the screw head and the copper core connecting rod. The limiting protrusion ring on the outer wall of the handle prevents the hand from slipping off, and the limiting block of the copper core connecting rod limits the axial movement of the handle, ensuring the stability of the overall structure.
[0007] As a further description of the above technical solution: The outer wall of the handle is provided with a grip groove, and the outer wall of the handle is provided with friction texture; Through the above technical solution: the grip groove on the outer wall of the handle conforms to the contour of the hand, making it easy to grip, and the friction texture on the outer wall increases the friction between the hand and the handle, preventing slippage during operation.
[0008] As a further description of the above technical solution: The outer wall of the protrusion is fixedly connected to the inner wall of the carbon fiber shell, and the outer wall of the connecting key is fixedly connected to the inner wall of the handle. The above technical solution involves fixing the outer wall of the protrusion to the inner wall of the carbon fiber shell, restricting the rotation of the screw head and the shell, and fixing the outer wall of the connecting key to the inner wall of the handle, restricting the rotation of the shell and the handle, thereby enhancing structural stability.
[0009] As a further description of the above technical solution: The outer wall of the limiting block is fixedly connected to the inner wall of the handle, and the outer wall of the bit is slidably connected to the inner wall of the mounting groove. The above technical solution involves fixing the outer wall of the limiting block to the inner wall of the handle, restricting the axial movement of the copper core connecting rod and the handle, and sliding the outer wall of the bit to the inner wall of the mounting groove, thereby realizing the loading, unloading, and positioning of the bit.
[0010] As a further description of the above technical solution: The outer wall of the inclined block contacts the outer wall of the ball, the outer wall of the connecting block is slidably connected in the inner wall groove of the connecting shell, and the outer wall of the moving piece is slidably connected to the inner wall of the connecting shell. The above technical solution involves the inclined block contacting the ball bearing, pushing the ball bearing through the inclined surface, and the connecting block and the moving piece sliding in the connecting shell groove and the inner wall respectively, ensuring stable movement of the components and achieving precise fit.
[0011] As a further description of the above technical solution: The storage assembly includes a screw cap, the outer wall of which is threaded to the inner wall of the handle. The inner wall of the handle has two placement slots, one of which has a replacement head placed on its inner wall. Through the above technical solution: the storage component achieves sealing and opening / closing through the threaded connection between the cap and the handle. When the cap is tightened, it closes the end of the handle to prevent internal items from falling out. After unscrewing, the accessories can be taken out. The two placement slots on the inner wall of the handle are used for classified storage, one of which is for placing the replacement head, so as to realize the orderly storage and convenient access of accessories and improve the convenience of use.
[0012] This utility model has the following beneficial effects: 1. In this utility model, the connector at one end of the copper core connecting rod is connected to the groove of the screw head by a headless bolt to ensure a stable connection. The outer carbon fiber shell partially wraps around the outer wall of the screw head. Two protrusions on the outer wall of the screw head assist in wrapping the carbon fiber shell, enhancing the connection between the copper core connecting rod and the screw head, and improving the robustness of the device. The carbon fiber shell is connected to the handle by a connecting key to prevent the copper core connecting rod from rotating with the shell. The foam core on the inner wall of the handle fixes the copper core connecting rod, and the limiting block at the end away from the screw head restricts displacement, ensuring the stability of the overall structure.
[0013] 2. In this utility model, the connecting block can be moved by pulling the sliding piece. The connecting block is connected to the moving piece, thereby enabling the moving piece to move on the inner wall of the connecting shell. When the moving piece moves inward, it can compress the spring and simultaneously move the inclined block. At this time, pulling the bit outward can push the ball out from the inner wall of the mounting groove, and the bit can be taken out of the mounting groove for replacement. By turning the cap, the replacement bit can be taken out from the placement groove, thus completing the bit replacement operation. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of a carbon fiber screwdriver proposed in this utility model; Figure 2 This is a schematic diagram of the copper core connecting rod of a carbon fiber screwdriver proposed in this utility model; Figure 3 This is a schematic diagram of the friction texture of a carbon fiber screwdriver proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the connecting shell of a carbon fiber screwdriver proposed in this utility model.
[0015] Legend: 1. Screwdriver head; 2. Bit; 3. Connecting mechanism; 31. Connector; 32. Copper core connecting rod; 33. Carbon fiber outer shell; 34. Handle; 35. Foam inner core; 4. Detachable mechanism; 41. Connecting shell; 42. Spring; 43. Moving plate; 44. Wedge block; 45. Connecting block; 46. Sliding plate; 47. Mounting slot; 48. Ball bearing; 5. Limiting component; 51. Headless bolt; 52. Protrusion; 53. Connecting key; 54. Limiting protrusion ring; 55. Limiting block; 6. Grip groove; 7. Friction texture; 8. Storage component; 81. Screw cap; 82. Placement slot; 83. Replacement head. Detailed Implementation
[0016] 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.
[0017] Reference Figures 1 to 3 One embodiment of this utility model is a carbon fiber screwdriver, which includes a screwdriver head 1 and a screwdriver bit 2. A connecting mechanism 3 is provided on one side of the screwdriver head 1, and a detachable mechanism 4 is provided on one side of the screwdriver bit 2. The connecting mechanism 3 includes a copper core connecting rod 32, which is the core connecting and conductive component of the connecting mechanism 3. One end of the copper core connecting rod 32 is fixedly connected to a connector 31, which connects to the screw head 1. The outer wall of the connector 31 is slidably connected to the inner wall of the screw head 1, allowing the connector 31 to slide inside the screw head 1 and transmit power. A carbon fiber shell 33 is fixedly connected to the outer wall of the copper core connecting rod 32, which uses the high strength and lightweight properties of carbon fiber to protect the copper core connecting rod 32 and enhance the overall structural strength. One end of the copper core connecting rod 32 is fixedly connected to a handle 34, which facilitates hand operation and provides installation space for internal components. The outer wall of the end of the copper core connecting rod 32 away from the screw head 1 and the inner wall of the handle 34 are filled with a foam core 35. The cushioning properties of the foam reduce vibration transmission when handheld and enhance the connection sealing, while also reducing the overall weight of the device. A limit component 5 is provided on the outer wall of the copper core connecting rod 32, and a storage component 8 is provided inside the handle 34. Specifically, the connecting mechanism 3 is centered on the copper core connecting rod 32, which has both connection and conductivity functions. The connector 31 at one end is inserted into the inner wall of the screw head 1, and the power transmission between the two is achieved through sliding cooperation, ensuring efficient transmission of operating force. The carbon fiber shell 33 on the outer wall of the copper core connecting rod 32 provides protection with its high strength and lightweight characteristics, which not only enhances the overall structural strength but also reduces the weight of the equipment. The handle 34 is fixed to one end of the copper core connecting rod 32, providing a fulcrum for handheld operation. At the same time, the interior of the handle 34 reserves installation space for components. The foam core 35 filling the space between the copper core connecting rod 32 and the inner wall of the handle 34 uses its cushioning properties to reduce vibration transmission, improve grip comfort, enhance connection sealing, and further reduce weight.
[0018] Reference Figure 2 , Figure 4 and Figure 5The detachable mechanism 4 includes a connecting shell 41, which serves as the main support structure of the detachable mechanism 4. One side of the connecting shell 41 is fixedly connected to one end of the screw head 1. A spring 42 is fixedly connected to the inner wall of the connecting shell 41, providing elastic restoring power. A movable piece 43 is fixedly connected to one end of the spring 42, driving subsequent components to move synchronously. The outer wall of the movable piece 43 is slidably connected to the inner wall of the connecting shell 41, allowing the movable piece 43 to slide stably along the inner wall of the connecting shell 41. Three connecting blocks 45 are fixedly connected to the outer wall of the movable piece 43, driving subsequent components to move synchronously. The outer wall of the connecting blocks 45 is slidably connected in a groove on the inner wall of the connecting shell 41, limiting the movement direction of the connecting blocks 45. A sliding piece 46 is fixedly connected to the outer wall of the connecting block 45. By pushing the sliding piece 46 to move, the connecting block 45 and the moving piece 43 move synchronously. Three inclined blocks 44 are fixedly connected to one side of the moving piece 43. The shape characteristics of the inclined blocks 44 can be used to squeeze. An installation groove 47 is fixedly connected to the inner wall of the connecting shell 41 to provide installation space for the bit 2. The outer wall of the bit 2 is slidably connected to the inner wall of the installation groove 47 so that the bit 2 can be inserted into the installation groove 47. Three balls 48 are movably connected to the inner wall of the installation groove 47. The rolling of the balls 48 can lock or release the bit 2. The outer wall of the inclined block 44 is in contact with the outer wall of the balls 48. When the inclined block 44 moves, it pushes the balls 48 toward the center of the installation groove 47, thereby locking the bit 2. Specifically, the detachable mechanism 4 is mainly supported by the connecting shell 41. One side of the connecting shell 41 is fixed to the screw head 1, providing a stable foundation for the entire mechanism. The spring 42 on the inner wall of the connecting shell 41 provides elastic restoring force for the moving piece 43. The outer wall of the moving piece 43 slides against the inner wall of the connecting shell 41, allowing it to move stably within the shell. The moving piece 43 is connected to the sliding piece 46 via three connecting blocks 45. The connecting blocks 45 are embedded in the sliding grooves on the inner wall of the connecting shell 41, which can limit the direction of movement and ensure that the moving piece 43 can move synchronously and smoothly when the sliding piece 46 is pushed. The three inclined blocks 44 on the side contact the three balls 48 on the inner wall of the mounting groove 47. The mounting groove 47 provides installation space for the bit 2. After the bit 2 is inserted, pushing the sliding plate 46 can drive the moving plate 43 to compress the spring 42, causing the inclined blocks 44 to move towards the balls 48. The inclined surfaces squeeze the balls 48 towards the center of the mounting groove 47, thereby locking the bit 2. When the sliding plate 46 is released, the spring 42 returns to its original position and pushes the moving plate 43 back. The inclined blocks 44 disengage from the balls 48, and the balls 48 release their restraint on the bit 2, allowing the bit 2 to be removed, thus achieving quick disassembly and replacement. The limiting component 5 includes a headless bolt 51. The outer wall of the headless bolt 51 is threadedly connected to the inner wall of the connector 31 and the screw head 1, allowing the connector 31, the copper core connecting rod 32, and the screw head 1 to be detachably fixed. Two protrusions 52 are fixedly connected to the outer wall of the screw head 1, restricting the relative rotation between the screw head 1 and the carbon fiber outer shell 33. The outer walls of the protrusions 52 are fixedly connected to the inner wall of the carbon fiber outer shell 33, thus fixing the screw head 1 to the carbon fiber outer shell 33. Two connecting keys 53 are fixedly connected to the outer wall of one end of the carbon fiber outer shell 33, restricting the relative rotation between the carbon fiber outer shell 33 and the handle 34. The outer walls of the connecting keys 53 are fixedly connected to... The carbon fiber shell 33 is fixed to the handle 34 on the inner wall of the handle 34. A limiting ring 54 is fixedly connected to the outer wall of the handle 34 to prevent the hand from slipping when holding it. A limiting block 55 is fixedly connected to the end of the copper core connecting rod 32 away from the bit 2 to limit the axial relative movement between the copper core connecting rod 32 and the handle 34. The outer wall of the limiting block 55 is fixedly connected to the inner wall of the handle 34 to achieve axial fixation between the copper core connecting rod 32 and the handle 34. A grip groove 6 is provided on the outer wall of the handle 34 to fit the contour of the hand for easy gripping. Friction texture 7 is provided on the outer wall of the handle 34 to increase the friction between the hand and the handle 34 and prevent slippage. Specifically, the headless bolt 51 is threaded on the outer wall of the connector 31 and the inner wall of the screwdriver head 1, which detachably fixes the connector 31, the copper core connecting rod 32 and the screwdriver head 1 to ensure stable power transmission. The two protrusions 52 on the outer wall of the screwdriver head 1 are embedded in the inner wall of the carbon fiber shell 33 to restrict the relative rotation of the two and achieve circumferential fixation. The two connecting keys 53 at one end of the carbon fiber shell 33 are connected to the inner wall of the handle 34 to prevent the relative rotation of the carbon fiber shell 33 and the handle 34 and enhance the overall structural stability. The limiting protrusion ring 54 on the outer wall of the handle 34 can prevent the hand from slipping and improve the grip safety. The limiting block 55 at the end of the copper core connecting rod 32 away from the bit 2 is fixed to the inner wall of the handle 34 to restrict the axial relative movement of the two and achieve axial fixation. The grip groove 6 on the outer wall of the handle 34 fits the contour of the hand and improves the grip comfort. The friction texture 7 on the outer wall increases the friction between the hand and the handle 34 to prevent slippage during operation and ensure ease of use and stability. The storage component 8 includes a screw cap 81, which closes the end of the handle 34. The outer wall of the screw cap 81 is threaded to the inner wall of the handle 34, thus achieving a detachable connection between the screw cap 81 and the handle 34. The inner wall of the handle 34 has two placement slots 82 for storing the bit 2, and a replacement bit 83 is placed on the inner wall of one of the placement slots 82. Specifically, the storage component 8 is closed at the end by a screw cap 81 connected to the handle 34 by a threaded connection. The screw cap 81 can be easily removed to facilitate the storage and removal of internal items. The two placement slots 82 on the inner wall of the handle 34 are used to store the bit 2. One of the placement slots 82 is used to place the replacement bit 83, so as to realize the orderly storage and carrying of accessories, making it convenient to quickly retrieve and replace them when needed, and improving the ease of use.
[0019] Working principle: The connector 31, which is fixedly connected to one end of the copper core connecting rod 32, can be connected to the groove of the screw head 1. The copper core connecting rod 32 and the screw head 1 are then fixed by the headless bolt 51. The carbon fiber shell 33 wrapped around the copper core connecting rod 32 can partially wrap the outer wall of the screw head 1. The two protrusions 52 fixedly connected to the outer wall of the screw head 1 facilitate the wrapping of the carbon fiber shell 33, enhance the connection between the carbon fiber shell 33 and the copper core connecting rod 32 and the screw head 1, and improve the stability of the device. The connecting key 53 connected to the outer wall of the carbon fiber shell 33 can connect the handle 34 to the carbon fiber shell 33, and at the same time prevent the copper core connecting rod 32 and the carbon fiber shell 33 from rotating. The foam core 35 filled in the inner wall of the handle 34 can fix the copper core connecting rod 32. At the same time, the limiting block 55 fixedly connected to the end of the copper core connecting rod 32 away from the screw head 1 can limit the displacement of the copper core connecting rod 32. By pulling the sliding plate 46, the sliding plate 46 can drive the connecting block 45 to move during its movement. The connecting block 45 is connected to the moving plate 43. During the movement of the connecting block 45, the moving plate 43 can move against the inner wall of the connecting shell 41. During the inward movement of the moving plate 43, the spring 42 can be squeezed. At the same time, the movement of the moving plate 43 can drive the inclined block 44 to move. During the inward movement of the inclined block 44, the bit 2 is pulled outward, which can push the ball 48 out of the inner wall of the mounting groove 47. At this time, the bit 2 can be taken out from the inner wall of the mounting groove 47 for replacement. By turning the cap 81, the replacement bit 83 can be taken out from the inner wall of the placement groove 82 for replacement.
[0020] 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 carbon fiber screwdriver, comprising a screwdriver head (1) and a screwdriver bit (2), characterized in that: A connecting mechanism (3) is provided on one side of the screwdriver head (1), and a detachable mechanism (4) is provided on one side of the bit (2). The connecting mechanism (3) includes a copper core connecting rod (32), one end of which is fixedly connected to a connector (31). The outer wall of the connector (31) is slidably connected to the inner wall of the screw head (1). The outer wall of the copper core connecting rod (32) is fixedly connected to a carbon fiber shell (33). One end of the copper core connecting rod (32) is fixedly connected to a handle (34). The outer wall of the end of the copper core connecting rod (32) away from the screw head (1) and the inner wall of the handle (34) are filled with a foam core (35). The outer wall of the copper core connecting rod (32) is provided with a limit component (5). The handle (34) is provided with a storage component (8).
2. The carbon fiber screwdriver according to claim 1, characterized in that: The detachable mechanism (4) includes a connecting shell (41), a spring (42) is fixedly connected to the inner wall of the connecting shell (41), a movable piece (43) is fixedly connected to one end of the spring (42), three connecting blocks (45) are fixedly connected to the outer wall of the movable piece (43), a sliding piece (46) is fixedly connected to the outer wall of the three connecting blocks (45), three inclined blocks (44) are fixedly connected to one side of the movable piece (43), an installation groove (47) is fixedly connected to the inner wall of the connecting shell (41), and three ball bearings (48) are movably connected to the inner wall of the installation groove (47).
3. A carbon fiber screwdriver according to claim 2, characterized in that: The limiting component (5) includes a headless bolt (51), the outer wall of which is threadedly connected to the inner wall of the connector (31) and the screw head (1). The outer wall of the screw head (1) is fixedly connected to two protrusions (52). One end of the outer wall of the carbon fiber shell (33) is fixedly connected to two connecting keys (53). The outer wall of the handle (34) is fixedly connected to a limiting protrusion ring (54). The end of the copper core connecting rod (32) away from the bit (2) is fixedly connected to a limiting block (55).
4. A carbon fiber screwdriver according to claim 3, characterized in that: The outer wall of the handle (34) is provided with a grip groove (6) and the outer wall of the handle (34) is provided with friction texture (7).
5. A carbon fiber screwdriver according to claim 3, characterized in that: The outer wall of the protrusion (52) is fixedly connected to the inner wall of the carbon fiber shell (33), and the outer wall of the connecting key (53) is fixedly connected to the inner wall of the handle (34).
6. A carbon fiber screwdriver according to claim 3, characterized in that: The outer wall of the limiting block (55) is fixedly connected to the inner wall of the handle (34), and the outer wall of the bit (2) is slidably connected to the inner wall of the mounting groove (47).
7. A carbon fiber screwdriver according to claim 2, characterized in that: The outer wall of the inclined block (44) is in contact with the outer wall of the ball (48), the outer wall of the connecting block (45) is slidably connected in the inner wall groove of the connecting shell (41), and the outer wall of the moving piece (43) is slidably connected in the inner wall of the connecting shell (41).
8. A carbon fiber screwdriver according to claim 1, characterized in that: The storage component (8) includes a screw cap (81), the outer wall of which is threaded to the inner wall of the handle (34), and the inner wall of the handle (34) has two placement slots (82), one of which has a replacement head (83) placed on its inner wall.