Screwdriver

Abstract

The utility model provides a screwdriver. The screwdriver comprises a screwdriver handle part and a screwdriver head part, the far end of the knife body part is connected with the near end of the knife handle part; the lighting assembly comprises a bearing part which is of a tubular structure, is arranged outside the cutter body part in a sleeving mode and is detachably connected with the cutter body part; the light source is arranged on the end face of the near end of the bearing piece and can emit auxiliary light to the near end of the cutter body part. By the adoption of the technical scheme, on one hand, the environment near the near end of the screwdriver body part is illuminated through the light source, the visual field of the environment near the near end of the screwdriver body part can be provided, and therefore the screwdriver can be used in the dark light environment, and on the other hand, the bearing piece is detachably connected with the screwdriver body part or the screwdriver handle part; therefore, the screwdriver can flexibly determine whether the lighting assembly is used or not according to the light condition of the working environment.

Description

Technical Field

[0001] This disclosure relates to the field of hand tool technology, and more particularly to a screwdriver. Background Technology

[0002] Screwdrivers, as a common hand tool, are widely used in mechanical assembly, equipment repair, and everyday household repairs. Traditional screwdrivers typically consist of a blade and a handle. The blade's shape matches the screw slot, and the user applies torque by holding the handle to tighten or loosen the screw. In dimly lit environments (such as inside equipment or in confined spaces), users may have difficulty seeing the screw's location and slot shape, leading to misalignment and inconvenient operation.

[0003] How to make screwdrivers usable in low-light environments is a question worth discussing. Utility Model Content

[0004] In view of this, the present disclosure provides a screwdriver that can be used in low-light environments.

[0005] To address the aforementioned technical problems, this disclosure provides a screwdriver, which includes:

[0006] Handle section;

[0007] The blade body portion, wherein the distal end of the blade body portion is connected to the proximal end of the handle portion;

[0008] Lighting components, including:

[0009] The support component is a tubular structure, sleeved outside the cutter body, and detachably connected to the cutter body.

[0010] A light source is disposed on the near end face of the carrier and is capable of emitting auxiliary light toward the near end of the blade body.

[0011] Optionally, the carrier member satisfies one or more of the following:

[0012] The support member is interference-fitted with the cutter body;

[0013] The distal end of the carrier is interference-fitted or threaded to the proximal end of the tool holder.

[0014] Optionally, the lighting assembly further includes:

[0015] An elastic portion is located on the inner wall of the support member, wherein the material of the elastic portion includes rubber and / or TPE.

[0016] Optionally, the elastic part satisfies one or more of the following:

[0017] The elastic part is a tubular structure and is coaxially arranged with the bearing member;

[0018] The elastic part includes a plurality of elastic units, and each elastic unit is distributed at intervals on the inner wall of the support member along the circumference of the support member.

[0019] The elastic part consists of multiple elastic units, each of which is distributed at intervals along the axial direction of the bearing member on the inner wall of the bearing member.

[0020] Optionally, there are multiple light sources, and each light source is distributed at intervals around the blade body on the proximal end face of the carrier.

[0021] Optionally, the lighting assembly further includes:

[0022] The first electrode plate is coupled to the positive electrode of each light source;

[0023] The second electrode plate is coupled to the negative electrode of each light source.

[0024] Optionally, the lighting assembly further includes:

[0025] A power supply is located between the first electrode plate and the second electrode plate, with the positive terminal of the power supply coupled to the first electrode plate and the negative terminal of the power supply coupled to the second electrode plate.

[0026] Optionally, the power supply includes a first power supply and a second power supply, and the screwdriver further includes:

[0027] The third electrode plate is located between the first electrode plate and the second electrode plate. The positive terminal of the first power supply is connected to the first electrode plate, and the negative terminal of the first power supply is connected to the third electrode plate.

[0028] The fourth electrode is located between the second electrode and the third electrode. The positive terminal of the second power supply is connected to the fourth electrode, and the negative terminal of the second power supply is connected to the second electrode.

[0029] Optionally, the lighting assembly further includes:

[0030] A switch is located between the third plate and the fourth plate, and is connected to both the third plate and the fourth plate respectively, and can control the connection or disconnection between the third plate and the fourth plate.

[0031] Optionally, the carrier has:

[0032] The receiving cavity contains the first electrode plate, the second electrode plate, the third electrode plate, the fourth electrode plate, the switch, and the power supply.

[0033] Compared with the prior art, the technical solution of the present disclosure has the following advantages:

[0034] The screwdriver disclosed in this embodiment includes a handle portion, a blade body portion, and an illumination assembly. The distal end of the blade body portion is connected to the proximal end of the handle portion. The illumination assembly includes a carrier and a light source. The carrier is a tubular structure, sleeved on the blade body portion or handle portion, and detachably connected to it. The light source is located on the proximal end face of the carrier and emits auxiliary light towards the proximal end of the blade body portion. By employing this technical solution, on the one hand, illuminating the environment near the proximal end of the blade body portion by the light source provides visibility of that environment, enabling the screwdriver to be used in low-light environments. On the other hand, the detachable connection between the carrier and the blade body portion or handle allows the screwdriver to flexibly decide whether to use the illumination assembly based on the lighting conditions of the working environment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this specification, the drawings used in the description of the embodiments of this specification or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of a screwdriver's working scenario is shown in an embodiment of this disclosure;

[0037] Figure 2 A schematic diagram of the structure of a lighting component according to an embodiment of the present disclosure is shown;

[0038] Figure 3 A cross-sectional schematic diagram of another lighting component according to an embodiment of this disclosure is shown.

[0039] Explanation of reference numerals in the attached figures:

[0040] Handle 11, blade 12;

[0041] Supporting component 21, cover plate 211, accommodating cavity 212;

[0042] Light source 22;

[0043] Elastic part 23;

[0044] First electrode plate 241, second electrode plate 242, third electrode plate 243, fourth electrode plate 244;

[0045] First power supply 251, second power supply 252;

[0046] Switch 26;

[0047] Fastener a. Detailed Implementation

[0048] As the background technology indicates, screwdrivers, as a common hand tool, are widely used in mechanical assembly, equipment repair, and everyday household repairs. Traditional screwdrivers typically consist of a blade and a handle. The shape of the blade matches the groove of a fastener, such as a bolt. Users apply torque by holding the handle to tighten or loosen the fastener. In dimly lit environments (such as inside equipment or in confined spaces), users may have difficulty seeing the location and groove of the fastener, leading to misalignment of the screwdriver and inconvenient operation.

[0049] To facilitate users in clearly seeing the location and groove shape of fasteners, this disclosure provides a screwdriver, including: a handle portion, a blade body portion, and an illumination assembly. The distal end of the blade body portion is connected to the proximal end of the handle portion. The illumination assembly includes a carrier and a light source. The carrier is a tubular structure, sleeved outside the blade body portion or the handle portion, and detachably connected to the blade body portion or the handle portion. The light source is disposed on the proximal end face of the carrier and can emit auxiliary light toward the proximal end of the blade body portion.

[0050] In practical use, on the one hand, by illuminating the environment near the proximal end of the blade body with a light source, a field of vision can be provided for the environment near the proximal end of the blade body, thus enabling the screwdriver to be used in low-light environments. On the other hand, by detachably connecting the carrier to the blade body or handle, the screwdriver can flexibly decide whether to use the lighting component according to the lighting conditions of the working environment.

[0051] To make the above-mentioned objectives, features, and beneficial effects of this disclosure more apparent and understandable, specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] It should be noted that the orientations or positional relationships mentioned in this specification are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating and simplifying the description, and are not intended to indicate or imply that the device referred to must have a specific orientation or be constructed in a specific orientation. Therefore, the orientations or positional relationships mentioned in this specification should not be construed as limitations of this disclosure.

[0053] Please refer to Figures 1 to 3 ,in, Figure 1 This illustration shows a schematic diagram of a screwdriver in operation according to an embodiment of the present disclosure. Figure 2 A schematic diagram of the structure of a lighting component according to an embodiment of the present disclosure is shown. Figure 3A cross-sectional schematic diagram of another lighting component according to an embodiment of this disclosure is shown.

[0054] For ease of understanding, along the axis of the screwdriver, during use, the end of each component closer to the fastener a is the proximal end, and the end farther from the fastener is the distal end.

[0055] Continue with the collection reference Figures 1 to 3 The screwdriver provided in this embodiment includes a handle portion 11 and a blade portion 12.

[0056] The handle 11 is the part of the screwdriver for the operator to hold. The handle 11 is connected to the far end of the blade body 12. The proximal end of the blade body 12 is the part of the screwdriver used to tighten or loosen screws. The axis of the blade body 12 and the axis of the handle 11 can be aligned or parallel.

[0057] In some non-limiting examples, the handle portion 11 may be made of materials such as rubber or ABS (Acrylonitrile Butadiene Styrene) plastic.

[0058] In some non-limiting examples, the handle portion 11 may have protrusions and recesses on its surface, which can increase the anti-slip performance of the handle portion 11.

[0059] In some non-limiting examples, the outer diameter of the handle portion 11 may be larger than the outer diameter of the blade body portion 12, which can increase the torque when driving the blade body portion 12, thereby making it easier to tighten or loosen the fastener a.

[0060] In some non-limiting examples, the proximal end of the handle portion 11 can be fixedly connected to the distal end of the blade body portion 12 by means of riveting, crimping, or other methods, which can prevent relative rotation between the blade body portion 12 and the handle portion 11.

[0061] In this embodiment, the screwdriver may further include a lighting component.

[0062] The lighting component is used to emit auxiliary light to the proximal end of the blade body 12. The lighting component can be provided on the handle 11 or on the blade body 12.

[0063] In practical use, the lighting component illuminates the environment near the proximal end of the screwdriver body 12, providing the operator with a view of the environment near the proximal end of the screwdriver body 12, thereby enabling the screwdriver to be used in low-light environments.

[0064] In this embodiment, the lighting assembly may include a carrier 21 and a light source 22.

[0065] In actual assembly, the carrier 21 can be a tubular structure, so that the blade body 12 can pass through the carrier 21 along the axial direction of the carrier 21. After assembly, the carrier 21 is sleeved on the blade body 12. The light source 22 can be set on the proximal end face of the carrier 21 to emit auxiliary light to the proximal end of the blade body 12. The proximal end face of the carrier 21 is the end face of the carrier 21 opposite to the fastener a. In this way, when the proximal end of the blade body 12 is processing the fastener a, the light source 22 set on the proximal end face of the carrier 21 can be opposite to the fastener a, so that the auxiliary light emitted by the light source 22 to the proximal end of the blade body 12 can illuminate the fastener a.

[0066] In this embodiment, the carrier 21 can be detachably connected to the blade body 12 or the handle 11.

[0067] In practical use, this allows for flexible decision-making regarding whether to use the lighting component based on the lighting conditions of the working environment. For example, in low-light environments, the lighting component can be mounted on the blade body 12 or the handle 11 to provide visibility of the environment near the proximal end of the blade body 12. In bright light environments, the lighting component can be detached from the blade body 12 or the handle 11, which reduces the weight of the screwdriver and makes it easier to use.

[0068] In some specific examples, the carrier 21 can be interference-fitted with the blade body 12, which enables a detachable connection between the carrier 21 and the blade body 12, and the carrier 21 and the blade body 12 are coaxial, so that the light source 22 on the carrier 21 can emit auxiliary light along the axial direction of the blade body 12 toward the fastener a.

[0069] In other specific examples, the distal end of the carrier 21 may be interference-fitted or threaded to the proximal end of the tool holder 11, thereby achieving a detachable connection between the carrier 21 and the tool holder 11, and coaxiality between the carrier 21 and the tool holder 11, so that the light source 22 on the carrier 21 can emit auxiliary light along the axial direction of the tool holder 11 toward the fastener a.

[0070] In some embodiments, the light source 22 can be a low-power light-emitting device such as an LED (Light Emitting Diode) or an OLED (Organic Light Emitting Diode), or a high-brightness light-emitting device such as a laser diode or a VCSEL (Vertical-Cavity Surface-Emitting Laser).

[0071] In some embodiments, the lighting assembly may further include: an elastic portion 23.

[0072] In practical use, the elastic part 23 is located on the inner wall of the support member 21 and is used to provide radial deformation along the support member 21 to compensate for the dimensional error between the inner diameter of the support member 21 and the outer diameter of the blade part 12, so that the support member 21 can be interference-fitted with the blade part 12 with different outer diameters, thereby improving the versatility of the lighting assembly.

[0073] In some embodiments, the elastic part 23 may be one or more of elastic materials such as rubber or TPE (Thermoplastic Elastomer).

[0074] In practical use, when the support member 21 is sleeved outside the blade body 12, these materials can provide different deformations along the radial direction of the support member 21 according to different forces, so that the support member 21 can be interference-fitted with the blade body 12 with different outer diameters.

[0075] In some embodiments, the elastic portion 23 may be a tubular structure.

[0076] In practical use, the outer diameter of the elastic part 23 is adapted to the inner diameter of the support member 21 so that the elastic part 23 can be provided, for example, bonded to the inner wall of the support member 21. When the support member 21 is sleeved on the outside of the blade body 12, the elastic part 23 covers the surface of the blade body 12 circumferentially. This increases the contact area between the elastic part 23 and the blade body 12, thereby increasing the friction between the two and reducing the probability of the lighting device slipping off the blade body 12 during operation. By setting the elastic part 23 and the support member 21 to be coaxial, the support member 21 and the blade body 12 can be made coaxial.

[0077] It should be noted that in other examples, the elastic portion 23 may also include multiple spaced elastic units, which reduces the contact area between the elastic portion 23 and the blade body portion 12, thereby reducing the friction between them and facilitating the separation of the lighting assembly from the blade body portion 12. In one non-limiting example, the elastic units, such as protrusions, may be spaced apart on the inner wall of the support member 21 along the circumference of the support member 21. In another non-limiting example, the elastic units, such as protrusions, may be spaced apart on the inner wall of the support member 21 along the axial direction of the support member 21.

[0078] In some embodiments, the lighting component may further include a power source.

[0079] In practical use, the power supply is used to supply power to the light source 22. The positive terminal of the light source 22 is coupled to the positive terminal of the power supply, and the negative terminal of the light source 22 is coupled to the negative terminal of the power supply.

[0080] In some embodiments, the power source may be a miniature power supply device such as a button cell or a solid-state battery.

[0081] In some embodiments, the number of light sources 22 can be multiple.

[0082] In practical use, the light intensity of the auxiliary light emitted by different light sources 22 can be superimposed. By setting multiple light sources 22, the lighting effect of the lighting component can be improved. By setting each light source 22 to be evenly distributed around the axis of the carrier 21 on the near end face of the carrier 21, the uniformity of the ambient light intensity at the near end of the blade body 12 when the carrier 21 is assembled on the blade body 12 can be improved.

[0083] It should be noted that in other examples, the individual light sources 22 may also be randomly distributed around the axis of the carrier 21 on the near end face of the carrier 21, such as non-uniformly spaced distribution or adjacent distribution.

[0084] In some embodiments, the lighting assembly may further include a first electrode plate 241 and a second electrode plate 242.

[0085] In practical use, the power supply can be located between the first electrode plate 241 and the second electrode plate 242. The first electrode plate 241 is coupled to the positive terminal of each light source 22 and also to the positive terminal of the power supply. The second electrode plate 242 is coupled to the negative terminal of each light source 22 and also to the negative terminal of the power supply. This allows the light sources 22 to be connected in parallel, so that if some light sources 22 are damaged, the other light sources 22 can still be used normally, thus improving the reliability of the lighting components.

[0086] In some embodiments, the carrier 21 may further include a receiving cavity 212.

[0087] In practical use, the receiving cavity 212 is located inside the carrier 21. The receiving cavity 212 is used to receive the first electrode plate 241, the second electrode plate 242 and the power supply. The positive and negative leads of the light source 22 are also located in the receiving cavity 212 and are connected to the first electrode plate 241 and the second electrode plate 242 respectively by wires. The receiving cavity 212 has an opening, which can be located on the outer side of the carrier 21 or the far end face of the carrier 21, at the position corresponding to the power supply, so that the power supply can be installed in the receiving cavity 212 through the opening.

[0088] As a specific example, the accommodating cavity 212 can be an annular cavity extending around the axis of the carrier 21, which facilitates the layout of the wires between the positive leads of each light source 22 distributed on the near end face of the carrier 21 and the first electrode plate 241, as well as the wires between the negative leads and the second electrode plate 242.

[0089] In some embodiments, the carrier 21 is provided with a cover plate 211.

[0090] In practical use, the cover plate 211 is located at the opening of the accommodating cavity 212 to seal the opening of the accommodating cavity 212 and protect the device in the accommodating cavity 212. The cover plate 211 is detachably connected to the carrier 21, which facilitates the replacement of the power supply and extends the service life of the lighting components.

[0091] As some specific examples, the first end of the cover plate 211 is hinged to the carrier 21, and the second end of the cover plate 211 is snapped into the carrier 21. In this way, when replacing the power supply, the opening of the accommodating cavity 212 can be exposed by releasing the snapping state between the second end and the carrier 21 and flipping the second end with the first end as the axis, thereby completing the replacement of the power supply. After the replacement is completed, the second end is flipped in the opposite direction with the first end as the axis until the second end is snapped into the carrier 21, thereby completing the sealing of the opening of the accommodating cavity 212.

[0092] As some other specific examples, the cover plate 211 can be fixed to the carrier 21 with screws.

[0093] In some embodiments, there may be multiple power supplies connected in series.

[0094] As some specific examples, the lighting assembly may also include a third electrode plate 243, a fourth electrode plate 244, and the power supply may include a first power supply 251 and a second power supply 252.

[0095] In actual assembly, both the third electrode plate 243 and the fourth electrode plate 244 are located within the accommodating cavity 212. The third electrode plate 243 is located between the first electrode plate 241 and the second electrode plate 242, and the fourth electrode plate 244 is located between the second electrode plate 242 and the third electrode plate 243. The first power supply 251 is installed between the first electrode plate 241 and the third electrode plate 243. The positive terminal of the first power supply 251 is connected to the first electrode plate 241, and the negative terminal of the first power supply 251 is connected to the third electrode plate 243. The second power supply 252 is installed between the second electrode plate 242 and the fourth electrode plate 244. The positive terminal of the second power supply 252 is connected to the fourth electrode plate 244, and the negative terminal of the second power supply 252 is connected to the third electrode plate 243. The third electrode plate 243 and the fourth electrode plate 244 are connected. In this way, a conductive path is formed sequentially between the first electrode plate 241, the first power supply 251, the third electrode plate 243, the fourth electrode plate 244, the second power supply 252, and the second electrode plate 242.

[0096] In some embodiments, the lighting component may further include a switch 26.

[0097] In actual assembly, switch 26 is located between the third electrode plate 243 and the fourth electrode plate 244. The third electrode plate 243 is connected to the fourth electrode plate 244 through switch 26. Switch 26 controls the power supply to the light source 22 by controlling the connection or disconnection of the path between the third electrode plate 243 and the fourth electrode plate 244.

[0098] In some embodiments, switch 26 can be a manual switch such as a push-button switch or a toggle switch, or an automatic switch such as a temperature control switch or a sound control switch.

[0099] As some specific examples, switch 26 is a push-button switch, and a through hole is provided on cover plate 211. The button of push-button switch 26 passes through the through hole and protrudes from the surface of cover plate 211.

[0100] It is understood that in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0101] It is understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] It is understood that, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "coupling," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0103] Understandably, when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0104] It is understandable that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0105] It is understood that the above description provides multiple embodiment solutions, and the optional methods described in each embodiment solution can be combined and cross-referenced with each other without conflict, thereby extending to a variety of possible embodiment solutions, all of which can be considered as the embodiment solutions disclosed in this disclosure.

[0106] While the embodiments disclosed herein are as described above, this disclosure is not limited thereto. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.

Claims

1. A screwdriver, characterized in that, include: Handle section; The blade body portion, wherein the distal end of the blade body portion is connected to the proximal end of the handle portion; Lighting components, including: The support component is a tubular structure, sleeved outside the cutter body, and detachably connected to the cutter body. A light source is disposed on the near end face of the carrier and is capable of emitting auxiliary light toward the near end of the blade body.

2. The screwdriver according to claim 1, characterized in that, The carrier component satisfies one or more of the following: The support member is interference-fitted with the cutter body; The distal end of the carrier is interference-fitted or threaded to the proximal end of the tool holder.

3. The screwdriver according to claim 1, characterized in that, The lighting assembly also includes: An elastic portion is located on the inner wall of the support member, wherein the material of the elastic portion includes rubber and / or TPE.

4. The screwdriver according to claim 3, characterized in that, The elastic part satisfies one or more of the following: The elastic part is a tubular structure and is coaxially arranged with the bearing member; The elastic part includes a plurality of elastic units, and each elastic unit is distributed at intervals on the inner wall of the support member along the circumference of the support member. The elastic part consists of multiple elastic units, each of which is distributed at intervals along the axial direction of the bearing member on the inner wall of the bearing member.

5. The screwdriver according to claim 1, characterized in that, The number of light sources is multiple, and each light source is distributed at intervals around the blade body on the proximal end face of the carrier.

6. The screwdriver according to claim 5, characterized in that, The lighting assembly also includes: The first electrode plate is coupled to the positive electrode of each light source; The second electrode plate is coupled to the negative electrode of each light source.

7. The screwdriver according to claim 6, characterized in that, The lighting assembly also includes: A power supply is located between the first electrode plate and the second electrode plate, with the positive terminal of the power supply coupled to the first electrode plate and the negative terminal of the power supply coupled to the second electrode plate.

8. The screwdriver according to claim 7, characterized in that, The power supply includes a first power supply and a second power supply, and the screwdriver further includes: The third electrode plate is located between the first electrode plate and the second electrode plate. The positive terminal of the first power supply is connected to the first electrode plate, and the negative terminal of the first power supply is connected to the third electrode plate. The fourth electrode is located between the second electrode and the third electrode. The positive terminal of the second power supply is connected to the fourth electrode, and the negative terminal of the second power supply is connected to the second electrode.

9. The screwdriver according to claim 8, characterized in that, The lighting assembly also includes: A switch is located between the third plate and the fourth plate, and is connected to both the third plate and the fourth plate respectively, and can control the connection or disconnection between the third plate and the fourth plate.

10. The screwdriver according to claim 9, characterized in that, The carrier has: The receiving cavity contains the first electrode plate, the second electrode plate, the third electrode plate, the fourth electrode plate, the switch, and the power supply.

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