Semi-automatic screwdriver bit replacing screwdriver system

Abstract

The semi-automatic screwdriver system comprises a screwdriver, a sleeve and a screwdriver head cabin, the screwdriver is provided with a screwdriver head connector, and an electromagnet is arranged in the screwdriver head connector; a screwdriver inserting hole is formed in the top of the sleeve, and the bottom is rotatably connected with the screwdriver head cabin; a plurality of storage grooves are formed in the screwdriver head cabin and used for storing screwdriver heads, and the storage grooves can rotate to be in butt joint with the insertion holes; a plurality of coding identifications are arranged on the side wall of the screwdriver head cabin, a coding window is formed in the surface of the sleeve, and the coding identifications can be exposed out of the coding window and used for indicating the current butt-joint containing groove. According to the screwdriver, the types of the screwdriver bits needing to be used are changed by rotating the screwdriver bit cabin, then the corresponding screwdriver bits are attracted or put back by controlling the electromagnet on the screwdriver, in addition, the containing groove in the current butt joint position is touched and sensed through the code identification of the three-dimensional structure, and the screwdriver bits can be changed through one-hand blind operation.

Description

Technical Field

[0001] This invention belongs to the field of manual tool technology, specifically relating to a semi-automatic screwdriver bit-changing system. Background Technology

[0002] In high-altitude operations such as building decoration, power maintenance, and equipment installation, workers often need to handle screws of various sizes (such as Phillips, slotted, and hex bolts) in unstable locations such as ladders and scaffolding. Existing technologies mainly employ the following methods:

[0003] Method 1: Wear multiple independent screwdrivers on your waist. The operator needs to carry multiple tools at the same time, which puts a heavy burden on the waist. When changing screwdriver bits, the operator has to put down the current tool and bend down to find the target tool. The process is cumbersome and time-consuming, which can easily lead to tools falling and loss of balance, posing a great safety hazard.

[0004] Method 2: Screwdrivers with a built-in tool magazine in the handle. For example, CN223172860U discloses a magnetically adsorbed screwdriver with a magnetic block inside the handle to attract the screw head, and multiple tool head receiving slots on the handle. However, this solution requires two hands to remove / insert the screw head, and visual alignment is required, making it impossible to perform continuous single-handed operation.

[0005] Method 3: Fully automatic head-changing screwdriver. This method uses a motor-driven turntable and voice recognition, but it is complex in structure, costly, and lacks reliability, making it difficult to popularize.

[0006] In summary, there is currently a lack of screwdrivers that can be easily operated with one hand to change bits for special use scenarios such as high-altitude operations, which increases certain safety hazards or inconvenience for related operations. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a semi-automatic screwdriver bit changing system to solve the problem of blindly changing screwdriver bits with one hand.

[0008] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0009] A semi-automatic screwdriver bit-changing system includes:

[0010] A screwdriver with a bit interface and an electromagnet inside the bit interface;

[0011] A socket with a screwdriver insertion hole at the top and a rotatable bit compartment at the bottom;

[0012] The bit compartment has multiple storage slots for storing bit holders, and each storage slot can be rotated to align with the mounting hole.

[0013] Furthermore, the side wall of the bit compartment is provided with multiple coded markings, and the surface of the sleeve is provided with coded windows, each of which can be exposed through the coded window to indicate the storage slot currently being docked.

[0014] Furthermore, the sleeve is provided with a first protruding button, and the bit compartment is provided with positioning recesses corresponding to each storage slot; whenever any storage slot is rotated to the docking position, the first protruding button is engaged with the positioning recess to indicate that the rotation is in place.

[0015] Furthermore, a permanent magnet is embedded at the bottom of the storage slot, and an O-ring is provided on the inner wall.

[0016] Furthermore, a dial is provided at the bottom of the bit compartment.

[0017] Furthermore, the first protruding button and the positioning recess are respectively provided on the end faces of the sleeve and the bit compartment that abut against each other; the bit compartment is connected to the inside of the sleeve through a rotating shaft and is equipped with a pre-tightening spring to press the bit compartment into the sleeve.

[0018] Furthermore, the screwdriver handle contains a battery and electromagnet control circuit, and a control button is located at the end of the handle.

[0019] Furthermore, the screwdriver is connected to the sleeve via a hanging rope.

[0020] Furthermore, a clamping plate is connected to the outer side of the sleeve, the inner side of the clamping plate is provided with an anti-slip pad, and the outer side is provided with a belt clip.

[0021] Furthermore, the outer side of the bit interface is provided with an annular groove, and the insertion hole is provided with a retractable second protrusion for engaging the annular groove.

[0022] The beneficial effects of this invention are as follows:

[0023] (1) The present invention provides a semi-automatic screwdriver bit changing system. First, the required bit model is changed by rotating the bit chamber. Then, the corresponding bit is attracted or put back by controlling the electromagnet on the screwdriver. The bit changing operation can be completed with only one hand.

[0024] (2) In this invention, the protruding button and related structure indicate whether the bit compartment has been rotated into place. The storage slot at the current docking position is perceived by touch through the three-dimensional structure coding mark. The bit model can be determined without visual inspection throughout the process, realizing blind operation of bit replacement.

[0025] (3) In this invention, the sleeve can be hung on the waist or on a working platform such as a ladder as needed, and the screwdriver is connected to the sleeve through the hanging rope on its handle; in addition, when the screwdriver is inserted, it is also engaged with the annular groove through the protrusion; thus, the screwdriver is protected from accidental fall off, ensuring the safety of high-altitude operations. Attached Figure Description

[0026] Figure 1 This is a general structural diagram of the screwdriver system of the present invention;

[0027] Figure 2 This is a schematic diagram of the screwdriver system of the present invention being mounted on a ladder;

[0028] Figure 3 This is a schematic diagram showing the separation between the sleeve and the turntable in the screwdriver system of the present invention;

[0029] Figure 4 This is a diagram showing the fit between the sleeve and the turntable in the screwdriver system of this invention;

[0030] Figure 5 This is a structural diagram of the bit compartment in the screwdriver system of the present invention;

[0031] Figure 6 This is a structural diagram of the screwdriver in the screwdriver system of the present invention;

[0032] Figure 7 This is a diagram showing the fit between the screwdriver and the bit compartment in the screwdriver system of the present invention.

[0033] Figure label:

[0034] 1-Sleeve; 11-Shaft; 12-Pin; 13-Preload spring;

[0035] 14-First protruding button; 15-Second protruding button; 16-Code window; 2-Clamping plate;

[0036] 21-Belt clip; 22-Anti-slip mat; 3-Bit holder; 31-Storage slot;

[0037] 32-Permanent magnet; 33-O-ring; 34-Code mark; 35-Positioning recess;

[0038] 36-Dial; 4-Screwdriver; 41-Bit interface; 42-Annular groove;

[0039] 43-Electromagnet; 44-Control button; 45-Battery; 46-Language loop;

[0040] 47 - Charging port. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein similar or identical reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] like Figure 1The semi-automatic screwdriver bit changing system shown includes a sleeve 1 and a screwdriver 4. The top of the sleeve 1 is provided with an insertion hole, into which the shank of the screwdriver 4 can be inserted, with the handle portion protruding from the top of the sleeve 1.

[0043] Combination Figure 3 As shown, the sleeve 1 has a clamping plate 2 on its side. The upper end of the clamping plate 2 is hinged to the main body of the sleeve 1 and a return spring is provided to ensure clamping force. The clamping plate 2 is folded inward relative to the sleeve 1, and its inner side is provided with an anti-slip pad 22 for clamping thicker objects, such as when clamping on... Figure 2 The ladder shown has a belt clip 21 on its outer side for use as follows: Figure 1 It is shown as being mounted on the belt.

[0044] like Figures 3 to 5 As shown, the bottom of the sleeve 1 is connected to a bit compartment 3. The main body of the bit compartment 3 is a cylindrical structure, with several (four shown) storage slots 31 evenly distributed around the central axis at the top. The storage slots 31 are used to hold bits, and permanent magnets 32 are embedded at the bottom to attract the bits. O-rings 33 are provided on the inner wall to help hold the bits and prevent them from shaking. The side wall of the bit compartment 3 opposite to each storage slot 31 is provided with a coding mark 34. The coding mark 34 is a three-dimensional pattern symbol that is raised outward and can be felt and distinguished by hand, used to identify the type of bit stored in the corresponding position; the protrusion height is 3~5mm, which should be clearly perceptible even when wearing gloves. At the same time, the top surface of the bit compartment 3 opposite to each storage slot 31 is provided with a positioning recess 35. The bottom of the bit compartment 3 is provided with a dial 36 for turning the bit compartment 3.

[0045] A rotating shaft 11 is provided on the lower inner side of the sleeve 1, which is rotatably connected to the bit compartment 3. After assembly, the main body of the bit compartment 31 is nested inside the sleeve 1, with the dial 36 exposed at the bottom of the sleeve 1. A first protruding button 14 is provided on the lower inner end face of the sleeve 1. Figure 4 As shown), it can slide into each positioning recess 35; the bottom end of the rotating shaft 11 is connected to a pre-tension spring 13 via a pin 12, which serves two purposes: firstly, to press against the bit compartment 3 upwards and provide axial clamping force for the bit compartment 3, and secondly, to facilitate the disassembly of the bit compartment 3; when the bit compartment 3 is rotated into place (i.e., the bit interface 41 of the screwdriver 4 is aligned with any of the storage slots 31), the first protruding button 14 falls into the positioning recess 35, producing a "click" feel and sound as a prompt. The side wall of the sleeve 1 is provided with a coding window 16 ( Figure 1 As shown in the figure, the coded identifier 34 used to display the current location can be perceived by sight and touch.

[0046] like Figure 6As shown, the screwdriver 4 has a handle at one end and a bit interface 41 at the other end. A ring groove 42 is formed around the outer periphery of the bit interface 41, and an electromagnet 43 is located on the inner side for attracting and connecting bits. A battery 45 and related control circuitry are located inside the handle, and a control button 44 is located at the tail end to control the on / off state of the electromagnet 43. A lanyard loop 46 is also located at the tail end of the handle for connecting a lanyard, which is then connected to the socket 1. Figure 1 (As shown), to avoid accidentally dropping screwdriver 4.

[0047] The lanyard loop 46 is rotatably connected to the handle, thus preventing the lanyard from getting tangled when the screwdriver 4 is used to tighten screws.

[0048] The electromagnet 43 is specifically a magnetic holding electromagnet, which eliminates the need for continuous power supply and reduces the load on the battery 45.

[0049] The control circuit specifically comprises: a control button 44 connected to a controller (such as a microcontroller or timing circuit); the controller output connected to a MOSFET (field-effect transistor) to drive the electromagnet 43; a freewheeling diode connected in reverse parallel across the coil of the electromagnet 43 to absorb the reverse electromotive force generated during turn-off and protect the circuit components; and a battery 45 providing a stable operating voltage to the controller via a voltage regulator circuit. The corresponding control logic is as follows: when the control button 44 is pressed briefly (<1 second), the controller outputs a positive pulse, energizing and holding the electromagnet; when the control button 44 is pressed for a long time (>2 seconds), the controller outputs a reverse pulse, de-energizing and releasing the electromagnet.

[0050] like Figure 7 As shown, a second protruding button 15 is provided in the screwdriver 4 insertion hole of the sleeve 1. The second protruding button 15 is a telescopic structure. When the screwdriver 4 is inserted into the sleeve 1, the second protruding button 15 engages with the annular groove 42, forming an axial holding force that can be overcome; by rotating the bit chamber 3, the bit interface 41 can be aligned with any storage slot 31, thereby controlling the electromagnet 43 to attract or return the bit.

[0051] The aforementioned semi-automatic screwdriver bit changing system indicates whether the bit compartment 3 has rotated to the correct position via the first protruding button 14 and related structures when changing bits; the bit model corresponding to the current rotation position is sensed by touch via the coded label 34; and the bit is attracted or returned by controlling the electromagnet 43 by the control button 44. The entire process requires no visual observation and can be completed blindly with just one hand, greatly improving the ease of use in special application environments and indirectly improving the safety of related operations.

[0052] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 invention 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 invention.

[0053] This invention is not limited to the above-described embodiments. Any obvious improvements, substitutions, or modifications that can be made by those skilled in the art without departing from the essence of this invention are within the scope of protection of this invention.

Claims

1. A semi-automatic screwdriver bit-changing system, characterized in that: include: A screwdriver (4) is provided with a bit interface (41), and an electromagnet (43) is provided inside the bit interface (41). A sleeve (1) has a screwdriver (4) insertion hole at its top and a screwdriver bit compartment (3) that can be rotatably connected to its bottom. The bit compartment (3) has multiple storage slots (31) for storing bit bits, and each storage slot (31) can be rotated to be aligned with the mounting hole.

2. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The side wall of the head compartment (3) is provided with multiple coding marks (34), and the surface of the sleeve (1) is provided with coding windows (16). Each coding mark (34) can be exposed through the coding window (16) to indicate the current docking storage slot (31).

3. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The sleeve (1) is provided with a first protruding button (14), and the bit compartment (3) is provided with a positioning recess (35) corresponding to each storage slot (31); whenever any storage slot (31) is rotated to the docking position, the first protruding button (14) is engaged in the positioning recess (35) to indicate that the rotation is in place.

4. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The bottom of the storage slot (31) is embedded with a permanent magnet (32), and the inner wall is provided with an O-ring (33).

5. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The bottom of the head compartment (3) is equipped with a dial (36).

6. The semi-automatic screwdriver bit changing system according to claim 3, characterized in that: The first protruding button (14) and the positioning recess (35) are respectively provided on the end face of the sleeve (1) and the bit chamber (3) that abut against each other; the bit chamber (3) is connected to the sleeve (1) through the rotating shaft (11) and is equipped with a pre-tightening spring (13) to press the bit chamber (3) into the sleeve (1).

7. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The screwdriver (4) has a control circuit for a battery (45) and an electromagnet (43) inside the handle, and a control button (44) is provided at the end of the handle.

8. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The screwdriver (4) is connected to the sleeve (1) by a hanging rope.

9. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The sleeve (1) is connected to a clamp (2) on the outside. The inner side of the clamp is provided with an anti-slip pad (22), and the outer side is provided with a belt clip (21).

10. The semi-automatic screwdriver bit changing system according to claim 1, characterized in that: The bit interface (41) has an annular groove (42) on its outer side, and the insertion hole has a retractable second protrusion (15) for engaging the annular groove (42).

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