Screwdriver with locking mechanism and replaceable bit

Abstract

The utility model discloses a screwdriver with a locking mechanism and a replaceable screwdriver bit, and belongs to the technical field of screwdrivers. The screw driver is mainly characterized in that locking blocks acting on a bit are installed in a locking component, six locking blocks are arranged along a circle of the bit at equal included angles, equal-angle gaps are formed between every two locking blocks, the six locking blocks and a mounting component are integrally formed, an extrusion strip is integrally formed in the locking component, and the extrusion strip is connected with the screw driver. A protruding part is integrally formed on the outer side wall of the locking block. According to the screwdriver, a traditional magnetic attraction and threaded locking mode is replaced, the screwdriver head can be locked and unlocked only by rotating the rotating cylinder, so that convenience is provided for screwdriver head replacement, the screwdriver head can be locked and fixed while a user uses the screwdriver conveniently, the screwdriver head is prevented from falling off from the screwdriver, and the screwdriver is convenient to use and high in practicability. According to the screwdriver with the replaceable screwdriver head and the locking mechanism, the problem that the screwdriver head is inconvenient to lock and replace is solved.

Description

Technical Field

[0001] The present application relates to the technical field of screwdrivers, and in particular to a replaceable screwdriver bit with a locking mechanism. Background Art

[0002] A replaceable bit screwdriver is a uniquely designed screwdriver that can be replaced with different types and sizes of bits according to different needs. This type of screwdriver is usually equipped with a detachable head, which allows users to easily replace different bits as needed without having to buy multiple different types of screwdrivers.

[0003] After searching, the announcement number is CN214445935U, which discloses a bit positioning and locking device for a precision screwdriver, which solves the problem of positioning accuracy during bit installation and replacement. A trapezoidal platform composed of four inclined surfaces is provided at the tail end of the bit rod, which cooperates with the inscribed square hole in the circle at the bottom of the mounting hole for positioning. This method achieves three goals at one stroke, constraining the three degrees of freedom of the tail of the bit rod, and the constraint formed by the front end lock nut pressing the four petals, thereby achieving a high-precision bit positioning and locking effect.

[0004] The heads of existing replaceable bit screwdrivers often use a regular hexagonal groove in combination with a magnetic suction method to limit the bit installation, and also use a threaded locking method to lock the bit. However, in actual use, although the magnetic suction fixation method can limit the bit, the magnetic suction force will still cause the bit to fall off during daily use. Although the threaded locking method can lock the bit, the threaded locking method is more cumbersome in operation. There are inconveniences when replacing and installing the bit, and it is easy to need to rotate again because of the small opening before the bit can be inserted.

[0005] Therefore, it is necessary to provide a replaceable screwdriver bit with a locking mechanism to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is to provide a screwdriver with a replaceable bit with a locking mechanism to solve the problem that it is inconvenient to change the bit when the bit is locked.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] A screwdriver with a replaceable bit and a locking mechanism, comprising a screwdriver body, a mounting component is provided at the end of the screwdriver body, a replaceable bit is plugged and installed inside the mounting component, a rotation reset mechanism is installed inside the mounting component, and the rotation reset mechanism is slidably installed with the locking component through a spring and a hook claw;

[0010] The locking component is provided with a locking block for acting on the screwdriver bit, six locking blocks are arranged at equal angles along a circle of the screwdriver bit, and equal-angle gaps are provided between each locking block, and the six locking blocks are respectively formed integrally with the mounting component;

[0011] An extrusion strip is integrally formed inside the locking component, and a convex portion is integrally formed on the outer side wall of the locking block;

[0012] The extruded strip is semi-cylindrical, the surface of the raised portion is an inwardly concave arc groove, and both sides of the raised portion are arc-shaped transition surface structures;

[0013] When the locking component rotates, the extrusion strip acts on the protrusion to deform the locking block to lock the screwdriver bit.

[0014] Preferably, the screwdriver bit comprises a fixing rod, a tail end of the fixing rod is integrally formed with a first regular hexagonal prism, and a tail portion of the fixing rod is integrally formed with a second regular hexagonal prism.

[0015] Preferably, the mounting component includes a mounting tube, a first regular hexagonal groove is opened at the center of the interior of the mounting tube, the first regular hexagonal prism of the bit is inserted into the first regular hexagonal groove, the inner sides of the six locking blocks form a second regular hexagonal groove, and the second regular hexagonal prism of the bit is placed in the second regular hexagonal groove.

[0016] Preferably, the rotation reset mechanism comprises a limit ring, an annular groove is formed through the interior of the installation tube, the limit ring is rotatably connected in the annular groove, and a tooth groove is formed along a circle of the first regular hexagonal groove on the side wall of the installation tube;

[0017] Among them, the hook member includes a first folding plate and a second folding plate, the first folding plate is fixedly connected to the side wall of the limiting ring, the second folding plate is fixedly connected to the side wall of the locking component, the first folding plate and the second folding plate are hooked with each other, and the spring is located in the gap between the first folding plate and the second folding plate.

[0018] Preferably, blocking side plates for preventing the spring from popping out are integrally formed on both sides of the second folding plate.

[0019] Preferably, the locking component includes a rotary cylinder, a locking cavity is provided inside the rotary cylinder, the extrusion strip is located on the inner side wall of the locking cavity, the diameter of the locking cavity is larger than the diameter surrounded by the six locking blocks, the second folding plate is fixed on the side wall of the rotary cylinder, and annular teeth are provided around the side wall of the rotary cylinder.

[0020] Preferably, the outer wall of the rotary drum is provided with anti-slip grooves.

[0021] The beneficial effects of this application are:

[0022] 1. By integrally forming six locking blocks on the mounting component, the rotating barrel rotates, and the locking block tightens the bit by squeezing the protruding portion through the extrusion strip, replacing the traditional magnetic attraction and thread locking method. In use, only the rotating barrel needs to be rotated to achieve the locking and opening state of the bit, thereby providing convenience for replacing the bit, facilitating the user's use, and also being able to lock and fix the bit to prevent the bit from falling off from the screwdriver.

[0023] 2. After the rotary barrel is rotated to lock the screwdriver bit through the rotation reset mechanism cooperating with the tooth groove and the annular tooth, the tooth groove and the annular tooth can be meshed under the reset action of the rotation reset mechanism to ensure that the rotary barrel is not easy to rotate, thereby ensuring the continuity of the locking state of the screwdriver bit.

[0024] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0026] In the attached picture:

[0027] Figure 1 It is an overall schematic diagram of a replaceable bit screwdriver with a locking mechanism in the present application;

[0028] Figure 2 for Figure 1 Schematic diagram of the overall explosion structure;

[0029] Figure 3 for Figure 2 A schematic cross-sectional view of the installation components;

[0030] Figure 4 for Figure 2 Schematic diagram of the structure of the middle rotation reset mechanism and the locking component;

[0031] Figure 5 for Figure 2 Schematic diagram of the locking component structure.

[0032] Among them, the reference numerals in the figure are:

[0033] 1. Screwdriver body;

[0034] 2. Mounting component; 21. Mounting cylinder; 22. Locking block; 23. Protrusion; 24. First folding plate; 25. Spring; 26. Tooth groove; 27. Limiting ring;

[0035] 3. Locking component; 31. Rotating cylinder; 32. Locking chamber; 33. Extrusion strip; 34. Second folding plate; 35. Annular teeth;

[0036] 4. bit; 41. fixing rod; 42. first regular hexagonal prism; 43. second regular hexagonal prism;

[0037] 5. The first regular hexagonal groove;

[0038] 6. The second regular hexagonal groove. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0041] See also Figure 1-5 , the utility model provides embodiments:

[0042] like Figure 1 As shown, the present application provides a replaceable bit screwdriver with a locking mechanism, including a screwdriver body 1 for holding by a user, a mounting component 2 is provided at the end of the screwdriver body 1, a replaceable bit 4 is plugged in and installed inside the mounting component 2, and the mounting component 2 is used for plugging and installing the required bit 4.

[0043] Specific use: Figure 2-3As shown, the screwdriver bit 4 includes a fixing rod 41, the tail end of the fixing rod 41 is integrally formed with a first regular hexagonal prism 42, the tail of the fixing rod 41 is integrally formed with a second regular hexagonal prism 43, the mounting component 2 includes a mounting tube 21, the interior of the mounting tube 21 is provided with a first regular hexagonal groove 5 at the center, and the first regular hexagonal prism 42 of the screwdriver bit 4 is inserted into the first regular hexagonal groove 5.

[0044] The first regular hexagonal groove 5 in the mounting tube 21 can restrict the first regular hexagonal column 42 on the bit 4, so that when the screwdriver body 1 rotates, the bit 4 can be driven to rotate, so as to install and remove the screw.

[0045] like Figure 3-5 As shown, a rotation reset mechanism is installed inside the mounting component 2, and the rotation reset mechanism is slidably mounted with the hook member and the locking component 3 through the spring 25;

[0046] Specifically, the hook member includes a first folding plate 24 and a second folding plate 34, the locking member 3 includes a rotary cylinder 31, the second folding plate 34 is fixed to the side wall of the rotary cylinder 31, and the side wall of the rotary cylinder 31 is also provided with an annular tooth 35

[0047] The rotation reset mechanism includes a limit ring 27. An annular groove is formed inside the mounting tube 21. The limit ring 27 is rotatably connected in the annular groove. A tooth groove 26 is formed along a circle of the first regular hexagonal groove 5 on the side wall of the mounting tube 21.

[0048] Among them, the first folding plate 24 is fixedly connected to the side wall of the limiting ring 27, the second folding plate 34 is fixedly connected to the side wall of the locking component 3, the first folding plate 24 and the second folding plate 34 are hooked together, and the spring 25 is located in the gap between the first folding plate 24 and the second folding plate 34.

[0049] During use, when it is necessary to rotate the rotary cylinder 31, the rotary cylinder 31 is pulled so that the annular teeth 35 on the rotary cylinder 31 are separated from the tooth grooves 26 on the mounting cylinder 21. In this process, the springs 25 inside the first folding plates 24 and the second folding plates 34 are compressed. In order to prevent the springs 25 from being displaced, holes are opened on the opposite side walls of the mounting cylinder 21 and the rotary cylinder 31 so that the two ends of the spring 25 can be inserted into the holes to prevent the springs 25 from being displaced. Furthermore, blocking side plates are integrally formed on both sides of the second folding plate 34 to prevent the springs 25 from popping out. The blocking side plates are used to block the springs 25 and ensure that they are inside the first folding plates 24 and the second folding plates 34.

[0050] Then, the rotary cylinder 31 is rotated, so that the rotary cylinder 31 drives the first folding plate 24 to rotate through the second folding plate 34, and at the same time, the limit ring 27 is rotated inside the mounting cylinder 21. When the rotary cylinder 31 is not needed to rotate, the rotary cylinder 31 is released, and the annular teeth 35 are fitted with the tooth grooves 26 under the restoring action of the spring 25 to prevent the rotary cylinder 31 from rotating at will.

[0051] like Figure 5 As shown, a locking cavity 32 is provided inside the rotary cylinder 31, and an extrusion strip 33 is located on the inner side wall of the locking cavity 32 and is integrally formed. The diameter of the locking cavity 32 is larger than the diameter surrounded by the six locking blocks 22. The locking block 22 acting on the screwdriver bit 4 is installed inside the locking component 3. The six locking blocks 22 are arranged at equal angles along a circle of the screwdriver bit 4, and gaps of equal angles are provided between each locking block 22. The six locking blocks 22 are respectively integrally formed with the mounting cylinder 21;

[0052] The inner sides of the six locking blocks 22 form a second regular hexagonal groove 6 , and the second regular hexagonal column 43 of the bit 4 is placed in the second regular hexagonal groove 6 .

[0053] The outer wall of the locking block 22 is integrally formed with a protrusion 23 ; when the locking component 3 rotates, the extrusion strip 33 acts on the protrusion 23 to deform the locking block 22 to lock the screwdriver bit 4 .

[0054] Specifically, when the rotary cylinder 31 rotates, the extrusion strip 33 on the locking cavity 32 of the rotary cylinder 31 rotates. When it rotates to the protrusion 23, due to the limited internal space, a force is generated on the protrusion 23, and then the locking block 22 is squeezed and tightened, thereby locking the second regular hexagonal prism 43 of the screwdriver bit 4.

[0055] In order to facilitate the extrusion strip 33 to slide on the surface of the protrusion 23, the extrusion strip 33 is semi-cylindrical, and the surface of the protrusion 23 is an inwardly concave arc groove, and both sides of the protrusion 23 are also arc-shaped transition surface structures.

[0056] When the extrusion strip 33 slides on the surface of the raised portion 23, the extrusion strip 33 can slide smoothly to the surface of the raised portion 23 through the transition surface, and then pass through the surface of the concave arc groove to ensure that the raised portion 23 is placed in the concave arc groove, and the extrusion strip 33 is not easy to slide out of the raised portion 23, so that the locking block 22 can firmly fix the bit 4 on the screwdriver body 1.

[0057] In order to facilitate hand-held rotation of the rotary drum 31 , an outer wall of the rotary drum 31 is provided with anti-slip grooves to increase the friction between the rotary drum 31 and the hand, thereby facilitating the rotation of the rotary drum 31 .

[0058] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A replaceable screwdriver with a locking mechanism, comprising a screwdriver body (1), an end of the screwdriver body (1) being provided with a mounting component (2), a replaceable screwdriver bit (4) being inserted and mounted inside the mounting component (2), characterized in that: A rotational reset mechanism is installed inside the installation component (2), and the rotational reset mechanism is slidably installed with the locking component (3) by cooperating with the hook member through a spring (25); The locking component (3) is provided with a locking block (22) for acting on the screwdriver bit (4), six locking blocks (22) are arranged at equal angles along a circle of the screwdriver bit (4), and gaps of equal angles are arranged between each locking block (22), and the six locking blocks (22) are respectively formed integrally with the mounting component (2); An extrusion strip (33) is integrally formed inside the locking component (3), and a protrusion (23) is integrally formed on the outer wall of the locking block (22); The extrusion strip (33) is semi-cylindrical, the surface of the protrusion (23) is an inwardly concave arc groove, and both sides of the protrusion (23) are arc-shaped transition surface structures; When the locking component (3) rotates, the extrusion strip (33) acts on the protruding portion (23) to cause the locking block (22) to deform and lock the screwdriver bit (4).

2. The replaceable bit screwdriver with a locking mechanism according to claim 1, characterized in that: The screwdriver bit (4) comprises a fixing rod (41), the tail end of the fixing rod (41) is integrally formed with a first regular hexagonal prism (42), and the tail of the fixing rod (41) is integrally formed with a second regular hexagonal prism (43).

3. A replaceable screwdriver bit with a locking mechanism according to claim 2, characterized in that: The mounting component (2) comprises a mounting tube (21), a first regular hexagonal groove (5) is provided at the center of the interior of the mounting tube (21), a first regular hexagonal column (42) of the screwdriver bit (4) is inserted into the first regular hexagonal groove (5), the inner sides of the six locking blocks (22) form a second regular hexagonal groove (6), and the second regular hexagonal column (43) of the screwdriver bit (4) is placed in the second regular hexagonal groove (6).

4. The replaceable bit screwdriver with a locking mechanism according to claim 3, characterized in that: The rotation reset mechanism comprises a stop ring (27), an annular groove is formed through the interior of the installation tube (21), the stop ring (27) is rotatably connected in the annular groove, and a tooth groove (26) is formed on the side wall of the installation tube (21) along a circle of the first regular hexagonal groove (5); The hook member comprises a first folding plate (24) and a second folding plate (34); the first folding plate (24) is fixedly connected to the side wall of the limiting ring (27); the second folding plate (34) is fixedly connected to the side wall of the locking component (3); the first folding plate (24) and the second folding plate (34) are hooked with each other; and the spring (25) is located in the gap between the first folding plate (24) and the second folding plate (34).

5. The replaceable bit screwdriver with a locking mechanism according to claim 4, characterized in that: Blocking side plates for preventing the spring (25) from popping out are also integrally formed on both sides of the second folding plate (34).

6. The replaceable bit screwdriver with a locking mechanism according to claim 5, characterized in that: The locking component (3) comprises a rotary cylinder (31), a locking cavity (32) is provided inside the rotary cylinder (31), the extrusion strip (33) is located on the inner side wall of the locking cavity (32), the diameter of the locking cavity (32) is greater than the diameter surrounded by the six locking blocks (22), the second folding plate (34) is fixed on the side wall of the rotary cylinder (31), and the side wall of the rotary cylinder (31) is also provided with annular teeth (35).

7. The replaceable bit screwdriver with a locking mechanism according to claim 6, characterized in that: The outer wall of the rotary drum (31) is provided with anti-slip grooves.

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