Portable multifunctional screwdriver

Abstract

The utility model discloses a portable multifunctional screwdriver which comprises a handle, a cavity is formed in the handle, a middle rod is arranged in the cavity, a metal pin is fixedly embedded in the front end of the middle rod, an installation head used for installing a screwdriver head is arranged at the front end of the handle, and a first magnetic block is fixedly arranged at the end, close to the cavity, of the installation head. The middle rod is detachably connected with the handle through magnetic attraction cooperation of the metal pin and the first magnetic block. The handle and the middle rod are detachably connected through magnetic attraction matching of the first magnetic block and the metal pin. The first magnetic block is matched with the tool bit in a magnetic attraction mode, so that the tool bit is detachably connected with the handle, and a user can conveniently and rapidly replace the tool bit when meeting different use requirements. A plurality of tool bit containing grooves used for containing tool bits are formed in the middle rod in a staggered mode, and second magnetic blocks corresponding to the tool bit containing grooves in a one-to-one mode are embedded in the middle rod. The screwdriver head is stored in the handle, so that the screwdriver head is convenient to store, and the screwdriver is convenient and safe to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a portable multifunctional screwdriver. Background Art

[0002] Traditional screwdrivers are typically one-piece and single-function. When tightening screws of varying sizes, multiple screwdrivers with different functional tips are required, making them inconvenient to carry and use, and also expensive. Therefore, portable screwdriver sets are in high demand.

[0003] Currently, most portable screwdriver combinations come in the form of a set consisting of a screwdriver shaft and handle, along with multiple metal screwdriver bits. These are connected by magnetic inlays, allowing the bits at the top of the screwdriver shaft to be replaced to meet a variety of specific usage requirements. However, the screwdriver shaft and handle are of a certain length, and the bits that need to be replaced are relatively small, so a separate storage box is usually provided for the bits. For example, the utility model with publication number CN208681555U discloses a screwdriver bit storage box. However, the separate use of the bits and screwdriver shaft makes it inconvenient to carry and store, and is prone to loss.

[0004] In order to solve the above problems, a method has been proposed to design a bit storage space in the screwdriver handle and a detachable bit structure at the screwdriver blade to achieve flexible replacement of multiple bits. However, the existing multi-bit screwdrivers have the following problems: first, when multiple bits are placed in the screwdriver handle, all the bits need to be poured out and searched when replacing the bits, which consumes a lot of searching time and makes the multi-bit screwdriver less operable; second, the handle and the corresponding connection structure are mostly screw-connected structures. When the bit needs to be replaced, the handle needs to be loosened and removed, and then the handle needs to be screwed on after the bit is replaced, which makes the operation of replacing the bit very inconvenient.

[0005] Therefore it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of the present utility model is to solve the problem in the prior art that when replacing the blade head, all the screwdriver heads need to be poured out and searched, which makes the operation of the multi-bit screwdriver poor, and the problem that the handle and the corresponding connection structure are mostly screwed structures, which makes the operation of replacing the blade head very inconvenient, and to propose a portable multi-functional screwdriver.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A portable multi-functional screwdriver, comprising a handle, a chamber is arranged inside the handle, a middle rod is arranged inside the chamber, a metal pin is fixedly embedded at the front end of the middle rod, an installation head for installing a tool bit is arranged at the front end of the handle, a first magnet is fixedly arranged at one end of the installation head close to the chamber, the middle rod is detachably connected to the handle through the magnetic attraction cooperation between the metal pin and the first magnet, a plurality of tool bit accommodating grooves for placing tool bits are arranged on the middle rod at staggered positions, a second magnet corresponding to each tool bit accommodating groove is embedded on the middle rod, the second magnet is located on the back side of the tool bit accommodating groove, and the tool bit is detachably connected to the tool bit accommodating groove through the second magnet.

[0009] Further, a tail cap is rotatably arranged at the rear end of the middle rod.

[0010] Further, a bearing is arranged inside the tail cap, the inner ring of the bearing is tightly fitted with the middle rod, and the outer ring of the bearing is tightly fitted with the tail cap.

[0011] Further, a first tool bit and a second tool bit are respectively arranged at both ends of the tool bit, and a clamping portion is arranged between the first tool bit and the second tool bit.

[0012] Further, the cross-section of the clamping portion is a regular hexagon. [[ID=?]]

[0013] Further, the installation head is provided with a tool bit groove for installing a tool bit, and the tool bit groove is a regular hexagon groove.

[0014] Further, protrusions that are fitted with the side walls of the clamping portion are arranged on both left and right sides of the tool bit accommodating groove, and the length of the protrusions is not longer than the length of the clamping portion.

[0015] Further, the cross-section of the outer peripheral wall of the handle is a regular polygon.

[0016] Further, both the handle and the tail cap are made of aluminum alloy material.

[0017] Further, the tool bit includes a writing tool bit that can be used for writing, one end of the writing tool bit is a writing end, the writing end is provided with a pointed head, and the writing end is made of tin bismuth material.

[0018] After adopting the above structure, the beneficial effects of the utility model are as follows:

[0019] (1)A portable multi-functional screwdriver according to the present utility model includes a handle. A chamber is provided inside the handle, and a middle rod is arranged in the chamber. A metal pin is fixedly embedded at the front end of the middle rod. An installation head for installing a tool bit is provided at the front end of the handle. A first magnetic block is fixedly arranged at one end of the installation head close to the chamber. The middle rod is detachably connected to the handle through the magnetic attraction cooperation between the metal pin and the first magnetic block. Through the magnetic attraction cooperation between the first magnetic block and the metal pin, the handle and the middle rod are detachably connected; through the magnetic attraction cooperation between the first magnetic block and the tool bit, the tool bit and the handle are detachably connected. In this way, the convenience of the user during operation is increased, and it is convenient for the user to quickly replace the tool bit when dealing with different usage requirements.

[0020] (2)In a portable multi-functional screwdriver according to the present utility model, a plurality of tool bit accommodation grooves for placing tool bits are staggeredly arranged on the middle rod. Second magnetic blocks corresponding to the tool bit accommodation grooves one by one are embedded on the middle rod. The second magnetic blocks are located on the back side of the tool bit accommodation grooves. The tool bit is detachably connected to the tool bit accommodation groove through the second magnetic block. Storing the tool bit inside the handle realizes the convenient storage of the tool bit, and also makes the screwdriver convenient and safe to carry; through the magnetic attraction cooperation between the second magnetic block and the tool bit to achieve detachable connection, the user can conveniently take out and store the tool bit, thus effectively saving the search time, improving the use experience, and increasing the convenience and practicality of the user's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for use in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is the overall structural cross-sectional view of the present utility model (the tool bit is in the assembled state);

[0023] Figure 2 is the Figure 1 enlarged schematic view of the structure at A of the present utility model;

[0024] Figure 3 is the overall structural exploded view of the present utility model (the tool bit is in the stored state);

[0025] Figure 4 is the overall structural three-dimensional schematic Figure 1 of the present utility model (the tool bit is in the stored state);

[0026] Figure 5 is the overall structural three-dimensional schematicFigure 2 (The cutter head is in the assembled state);

[0027] Figure 6 It is a schematic diagram of the cooperative connection of the middle rod, cutter head and second magnetic block of the present utility model;

[0028] Figure 7 It is a three-dimensional schematic diagram of the middle rod of the present utility model;

[0029] Figure 8 It is a three-dimensional schematic diagram of the writing cutter head of the present utility model.

[0030] Figures 1 to 8 The reference numerals in the figure are:

[0031] 1. Handle; 11. Chamber; 12. Mounting head; 121. Cutter head groove; 2. Middle rod; 21. Metal pin; 22. Cutter head accommodation groove; 221. Protrusion; 3. Cutter head; 31. First cutter head; 32. Second cutter head; 33. Clamping portion; 34. Writing cutter head; 341. Writing end; 342. Connection end; 4. First magnetic block; 5. Second magnetic block; 6. Tail cap; 61. Bearing. Specific embodiments

[0032] To make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present utility model, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0034] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present utility model, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly stipulated and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the present utility model are only for the purpose of illustration and do not represent the only implementation manner.

[0038] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0039] Such as Figures 1 to 8As shown, a portable multi-functional screwdriver includes a handle 1. A chamber 11 is provided inside the handle 1. A middle rod 2 is provided in the chamber 11. A metal pin 21 is fixedly embedded at the front end of the middle rod 2. An installation head 12 for installing a tool bit 3 is provided at the front end of the handle 1. A first magnet 4 is fixedly provided at one end of the installation head 12 close to the chamber 11. The middle rod 2 is detachably connected to the handle 1 through the magnetic attraction cooperation between the metal pin 21 and the first magnet 4. A number of tool bit accommodation grooves 22 for placing the tool bit 3 are staggeredly arranged on the middle rod 2. A second magnet 5 corresponding to each tool bit accommodation groove 22 is embedded on the middle rod 2. The second magnet 5 is located on the back side of the tool bit accommodation groove 22. The tool bit 3 is detachably connected to the tool bit accommodation groove 22 through the second magnet 5.

[0040] Based on the above embodiment, what the present utility model wants to solve is to provide a portable multi-functional screwdriver, including a handle 1. A chamber 11 is provided inside the handle 1. A middle rod 2 is provided in the chamber 11. A metal pin 21 is fixedly embedded at the front end of the middle rod 2. An installation head 12 for installing a tool bit 3 is provided at the front end of the handle 1. A first magnet 4 is fixedly provided at one end of the installation head 12 close to the chamber 11. The middle rod 2 is detachably connected to the handle 1 through the magnetic attraction cooperation between the metal pin 21 and the first magnet 4. In this embodiment, both the metal pin 21 and the tool bit 3 are made of iron material. In order to increase the hardness and corrosion resistance, other materials can be electroplated on the surface of the tool bit 3. Through the magnetic attraction cooperation between the first magnet 4 and the metal pin 21, the handle 1 and the middle rod 2 are detachably connected; through the magnetic attraction cooperation between the first magnet 4 and the tool bit 3, the tool bit 3 and the handle 1 are detachably connected. In this way, the convenience of the user during operation is increased, and it is convenient for the user to quickly replace the tool bit 3 when dealing with different usage requirements. A number of tool bit accommodation grooves 22 for placing the tool bit 3 are staggeredly arranged on the middle rod 2. A second magnet 5 corresponding to each tool bit accommodation groove 22 is embedded on the middle rod 2. The second magnet 5 is located on the back side of the tool bit accommodation groove 22. The tool bit 3 is detachably connected to the tool bit accommodation groove 22 through the second magnet 5. Storing the tool bit 3 inside the handle 1 realizes the convenient storage of the tool bit 3, and also makes the screwdriver convenient and safe to carry; through the magnetic attraction cooperation between the second magnet 5 and the tool bit 3 to achieve detachable connection, the user can conveniently take out and store the tool bit 3, thus effectively saving the searching time, improving the use experience, and increasing the convenience and practicality of the user's operation.

[0041] In this embodiment, when the tool bit 3 needs to be replaced, the middle rod 2 is directly pulled out from the handle 1. At this time, under the magnetic attraction of the second magnet block 5, the tool bits 3 will not fall off, but are still orderly adsorbed in the tool bit accommodating groove 22. The user can remove the corresponding tool bit 3 as needed, and then insert the middle rod 2 into the handle 1. The middle rod 2 is magnetically attracted and connected to the handle 1 through the metal pin 21 embedded at the front end and the first magnet block 4 fixedly arranged at the front end of the handle 1. The removed tool bit 3 is inserted into the tool bit groove 121, and is detachably connected to the mounting head 12 under the magnetic attraction of the first magnet block 4.

[0042] As another preferred solution of the present utility model, a tail cap 6 is rotatably arranged at the rear end of the middle rod 2. A bearing 61 is arranged inside the tail cap 6. The inner ring of the bearing 61 is tightly fitted with the middle rod 2, and the outer ring of the bearing 61 is tightly fitted with the tail cap 6. In this embodiment, as Figure 1 and Figure 3 shown, the arrangement of the bearing 61 enables the tail cap 6 to rotate relative to the handle 1, improving the flexibility of operation. During work, the index finger presses on the tail cap 6, and the thumb and middle finger cooperate to rotate the handle 1. After rotating to the maximum angle, the thumb and middle finger can be reset and then continue to rotate the handle 1 without removing the screwdriver from the screw and then repositioning and turning, improving the flexibility of operation.

[0043] As another preferred solution of the present utility model, a first tool bit 31 and a second tool bit 32 are respectively arranged at both ends of the tool bit 3, and a clamping portion 33 is arranged between the first tool bit 31 and the second tool bit 32. The cross section of the clamping portion 33 is a regular hexagon. The mounting head 12 is provided with a tool bit groove 121 for mounting the tool bit 3, and the tool bit groove 121 is a regular hexagon groove. In this embodiment, as Figure 2 and Figure 3 shown, the arrangement of the first tool bit 31 and the second tool bit 32 doubles the number of specifications of the screwdriver bit without increasing the space, improving the space utilization rate. The cross section of the clamping portion 33 is a regular hexagon, and the tool bit groove 121 is a regular hexagon groove. This structural design makes the cooperation between the tool bit 3 and the tool bit groove 121 tighter, and at the same time, they will not rotate relative to each other left and right.

[0044] As another preferred solution of the present utility model, protrusions 221 that are in fitting contact with the side walls of the clamping portion 33 are arranged on both the left and right sides of the tool bit accommodating groove 22, and the length of the protrusions 221 is not longer than the length of the clamping portion 33. In this embodiment, as Figure 6 shown, the protrusions 221 are arranged to limit the left and right sides of the clamping portion 33 of the tool bit 3, preventing the tool bit 3 in the handle 1 from shaking and generating abnormal noises when the screwdriver is moved. The length of the protrusions 221 is not longer than the length of the clamping portion 33 to facilitate the removal of the tool bit 3 from the tool bit accommodating groove 22.

[0045] As another preferred solution of the present utility model, the cross-section of the outer peripheral wall of the handle 1 is a regular polygon. In this embodiment, as Figure 4 , Figure 5 shown, the setting of the regular polygon outer wall forms multiple edge ridges on the outer peripheral wall of the handle 1. The edge ridges increase the force-bearing area between the user's hand and the outer peripheral wall of the handle 1, and reduce the slipping phenomenon between the user's hand and the handle 1 when twisting the screw.

[0046] As another preferred solution of the present utility model, both the handle 1 and the end cap 6 are made of aluminum alloy material. In this embodiment, aluminum alloy is one of the most widely used non-ferrous metal structural materials in industry. It has a low density, relatively high strength, close to or exceeding high-quality steel, and good plasticity. Using aluminum alloy material makes the handle 1 and the end cap 6 have excellent rigidity and oxidation resistance, and the overall weight is relatively light.

[0047] As another preferred solution of the present utility model, the tool bit 3 includes a writing tool bit 34 that can be used for writing. One end of the writing tool bit 34 is a writing end 341, the writing end 341 is provided with a pointed head, and the writing end 341 is made of tin-bismuth material. In this embodiment, as Figure 8 shown, one end of the writing tool bit 34 is a writing end 341, the writing end 341 is provided with a pointed head, and the writing end 341 is made of tin-bismuth material; the other end of the writing tool bit 34 is a connecting end 342, the connecting end 342 is provided with a regular hexagon shape, and the connecting end 342 is made of a metal material that can be magnetically attracted and connected to a magnet. The setting of the writing tool bit 34 enables the screwdriver to achieve a writing function, which is convenient for on-site drawing of drawings, recording data, etc., and increases the practicability of the screwdriver. In this embodiment, the writing end 341 is fixedly connected to the connecting end 342 by means of adhesion or welding.

[0048] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A portable multi-functional screwdriver, comprising a handle (1), wherein a chamber (11) is arranged inside the handle (1), and it is characterized in that: A middle rod (2) is arranged inside the chamber (11). A metal pin (21) is fixedly embedded at the front end of the middle rod (2). An installation head (12) for installing a cutter head (3) is arranged at the front end of the handle (1). A first magnetic block (4) is fixedly arranged at one end of the installation head (12) close to the chamber (11). The middle rod (2) is detachably connected to the handle (1) through the magnetic attraction cooperation between the metal pin (21) and the first magnetic block (4). A plurality of cutter head accommodation grooves (22) for placing the cutter head (3) are arranged on the middle rod (2) in a staggered manner. A second magnetic block (5) corresponding to each cutter head accommodation groove (22) is embedded on the middle rod (2). The second magnetic block (5) is located on the back side of the cutter head accommodation groove (22). The cutter head (3) is detachably connected to the cutter head accommodation groove (22) through the second magnetic block (5).

2. The portable multi-functional screwdriver according to claim 1, characterized in that: A tail cap (6) is rotatably arranged at the rear end of the middle rod (2).

3. A portable multi-functional screwdriver according to claim 2, characterized in that: A bearing (61) is arranged inside the tail cap (6). The inner ring of the bearing (61) is tightly fitted with the middle rod (2), and the outer ring of the bearing (61) is tightly fitted with the tail cap (6).

4. A portable multi-functional screwdriver according to claim 1, characterized in that: First cutter heads (31) and second cutter heads (32) are respectively arranged at both ends of the cutter head (3). A clamping portion (33) is arranged between the first cutter head (31) and the second cutter head (32).

5. The portable multi-functional screwdriver according to claim 4, wherein: The cross section of the clamping portion (33) is a regular hexagon.

6. The portable multi-functional screwdriver according to claim 5, wherein: The installation head (12) is provided with a cutter head groove (121) for installing the cutter head (3), and the cutter head groove (121) is a regular hexagon groove.

7. A portable multi-functional screwdriver according to claim 4, characterized in that: Protrusions (221) that are in fit with the side walls of the clamping portion (33) are arranged on both the left and right sides of the cutter head accommodation groove (22), and the length of the protrusions (221) is not longer than the length of the clamping portion (33).

8. A portable multi-functional screwdriver according to claim 1, characterized in that: The cross section of the outer peripheral wall of the handle (1) is a regular polygon.

9. The portable multi-functional screwdriver according to claim 2, wherein: Both the handle (1) and the tail cap (6) are made of aluminum alloy material.

10. A portable multi-functional screwdriver according to claim 1, characterized in that: The cutter head (3) includes a writing cutter head (34) that can be used for writing. One end of the writing cutter head (34) is a writing end (341), and the writing end (341) is provided with a pointed head and is made of tin bismuth material.

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