High torque internal multi-tooth structure screwdriver bit

Abstract

The utility model provides a high torque inner multi -tooth structure screwdriver head relates to screwdriver head technical field, including replacement tool holder, the middle position of back end of replacement tool holder and the middle position of front end of adjusting seat fixed connection, the back end position of adjusting seat is equipped with three sliding slots, and the three sliding slots of adjusting seat back end are Y shape design. This screwdriver head passes through the linkage structure of adjusting bevel gear, adjusting tooth ring, adjusting frame, rotates handle seat of adjusting bevel gear top can drive adjusting tooth ring rotation, and then through helical groove transmission drives three Y shape distribution adjusting frame along sliding groove synchronous expansion or contraction inwards, realizes flexible adjustment of three plug -in parts interval and position finally. The existing high torque screwdriver when facing different models, different slot inner diameter electric screwdriver, need frequent replacement corresponding specification screwdriver head reduces assembly or maintenance efficiency problem.

Description

Technical Field

[0001] This utility model belongs to the field of screwdriver tip technology, and more specifically, it relates to a high-torque internal multi-tooth structure screwdriver tip. Background Technology

[0002] In many fields such as mechanical assembly, electronic equipment repair, and home installation, screwdrivers are core tightening tools, and their performance directly affects work efficiency and connection stability. Currently, most screwdriver heads on the market have fixed tooth structures, such as slotted, Phillips, and hexagonal types. High-torque screwdrivers are tools that can generate greater rotational force and are mainly used to tighten or loosen screws that require greater torque. Compared to ordinary screwdrivers, high-torque screwdrivers can provide greater torque, and these screwdrivers are equipped with appropriate cutting tips.

[0003] Application number CN202122184278.7 discloses a high-torque buffer screwdriver bit, including a connector, a buffer assembly, and an adjustment assembly connected to an electric drill. A connecting rod is connected to the bottom of the connector, and a rotating head for rotating screws is fixedly connected to the bottom of the connecting rod. The buffer assembly for buffering the connecting rod is installed inside the connecting rod and connected to the connector. An adjustment assembly for adjusting the rotating head is installed inside the rotating head. This high-torque buffer screwdriver bit, by incorporating the adjustment assembly, allows for adjustments when the bit and screw are mismatched or the screw is stripped. By inserting a screwdriver into the adjustment slot and rotating it, a worm gear rotates. The rotation of the two worm gears drives two sets of threaded rods, thereby adjusting the positions of the first sliding block and the second sliding block. This allows for adaptation to different screw sizes and enables operation on stripped screws.

[0004] Based on the above patent searches and understanding of the applications of existing high-torque screwdriver bits: Most existing high-torque screwdriver bits have a fixed structure, and their connection interface with drive devices such as electric screwdrivers has a fixed specification. When dealing with electric screwdrivers of different models and different slot inner diameters, it is necessary to frequently change the corresponding screwdriver bits. This not only increases the cost of carrying tools, but also interrupts the work process due to frequent changes, reducing assembly or maintenance efficiency.

[0005] When traditional screwdriver bits are connected to drive devices, they mainly rely on the rigid engagement of the mechanical structure and lack an auxiliary positioning mechanism. During high-torque operations or when frequently inserting, removing, or adjusting the tool position, misalignment can easily occur due to an unstable connection. This not only affects the accuracy of the operation but may also cause wear on the screwdriver bit or drive device interface, shortening the tool's lifespan. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a high-torque internal multi-tooth screwdriver bit. This solves the problem that existing high-torque screwdrivers require frequent bit changes when dealing with electric screwdrivers of different models and slot diameters. This not only increases tool carrying costs but also disrupts workflows due to frequent changes, reducing assembly or maintenance efficiency. Furthermore, traditional screwdriver bits rely primarily on rigid mechanical engagement with the drive unit, lacking an auxiliary positioning mechanism. During high-torque operations or frequent insertion / removal and adjustment of tool position, misalignment can easily occur due to insecure engagement, affecting operational accuracy and potentially causing wear on the screwdriver bit or drive unit interface, shortening tool lifespan.

[0007] The technical solution adopted in this utility model is as follows: A high-torque internal multi-tooth screwdriver bit includes a replaceable bit. The rear middle position of the replaceable bit is fixedly connected to the front middle position of an adjusting seat. The rear end of the adjusting seat has three sliding grooves, which are Y-shaped. An adjusting bracket is slidably connected to each of the three sliding grooves. The three adjusting brackets are distributed in a Y-shape, and the spacing between any two adjacent adjusting brackets is the same. An arc-shaped groove is provided at the front end of each adjusting bracket. An adjusting toothed ring is rotatably connected to the middle position inside the adjusting seat. A spiral groove is provided on the rear circumferential surface of the adjusting toothed ring.

[0008] According to one embodiment of the present invention, an adjusting bevel gear is rotatably connected to the upper part of the inner side of the adjusting seat, a handle seat is provided at the top of the adjusting bevel gear, and the lower part of the rear end of the adjusting bevel gear meshes with the upper part of the front end of the adjusting gear ring for transmission.

[0009] According to one embodiment of the present invention, the rear helical groove of the adjusting gear ring engages with the arcuate grooves at the front ends of the three adjusting frames for transmission.

[0010] According to one embodiment of the present invention, a connector is fixedly installed on the outer side of each adjustment frame, the three connectors are arranged in a ring, and the spacing between any two adjacent connectors is the same.

[0011] According to one embodiment of the present invention, each of the plug-in components is provided with a magnet at its rear and outer positions, and the spacing between any two adjacent plug-in components is the same.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This screwdriver bit utilizes a linkage structure of adjusting bevel gears, adjusting gear rings, and adjusting brackets. Rotating the handle at the top of the adjusting bevel gear drives the adjusting gear ring to rotate, which in turn drives three Y-shaped adjusting brackets to expand outward or contract inward along the slide groove via a spiral groove transmission. This allows for flexible adjustment of the spacing and position of the three connectors. This design enables the connectors to be adapted to the slots of electric screwdrivers with different inner diameters and models, eliminating the need for frequent screwdriver bit changes, reducing the number of tools carried, lowering tool costs, and avoiding work interruptions caused by tool changes, thus significantly improving assembly and maintenance efficiency.

[0013] Each connector has magnets on its rear and outer sides. When it mates with the slot of the electric screwdriver, the magnets generate an attractive force to help position the connector and slot, ensuring a tight fit. This effectively prevents misalignment during high-torque operations or tool adjustments. Stable mating not only improves work accuracy but also reduces hard friction between the screwdriver head and the drive device interface caused by misalignment, lowering the probability of component wear and extending the service life of the entire tool set.

[0014] The adjustment process requires no additional tools; all adjustments can be made simply by manually rotating the handle of the adjusting bevel gear. The operation is simple and convenient. The three adjusting brackets are evenly distributed in a Y-shape and achieve synchronous transmission through the spiral groove of the adjusting gear ring, ensuring that the adjustment range of the three connectors is consistent. This allows for quick and accurate matching of the drive equipment interface, significantly shortening the adaptation time and improving work efficiency. It is especially suitable for scenarios that require frequent switching of drive equipment.

[0015] The Y-shaped groove at the rear end of the adjustment seat provides a stable sliding guide for the adjustment frame. The three adjustment frames are evenly spaced and synchronously linked, which can ensure that the torque can be evenly transmitted to the replacement cutter head during high torque operation, avoiding component deformation or damage caused by uneven force, ensuring the stable performance of the screwdriver head under high load conditions, and meeting the needs of high torque operation in fields such as mechanical assembly. Attached Figure Description

[0016] Figure 1 This is a side view schematic diagram of the high-torque internal multi-tooth structure screwdriver tip of this utility model.

[0017] Figure 2 This is a side view diagram of the disassembled high-torque internal multi-tooth structure screwdriver head of this utility model.

[0018] Figure 3 This is the utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a rear side view of some parts of the adjustment frame of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Replace the cutter head; 2. Adjusting seat; 201. Adjusting gear ring; 202. Adjusting bevel gear; 203. Adjusting bracket; 204. Connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Example: As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a high-torque internal multi-tooth screwdriver bit, including a replacement bit 1; the rear middle position of the replacement bit 1 is fixedly connected to the front middle position of the adjusting seat 2, the rear end position of the adjusting seat 2 is provided with three sliding grooves, and the three sliding grooves at the rear end of the adjusting seat 2 are designed in a Y shape, and an adjusting bracket 203 is slidably connected in each of the three sliding grooves of the adjusting seat 2, the three adjusting brackets 203 are distributed in a Y shape, and the spacing between each pair of adjacent adjusting brackets 203 is the same, and the front end position of each adjusting bracket 203 is provided with an arc groove, and an adjusting toothed ring 201 is rotatably connected to the middle position inside the adjusting seat 2, and a spiral groove is provided on the rear circumferential surface of the adjusting toothed ring 201.

[0024] The adjusting seat 2 is rotatably connected to the upper part of the interior. The top of the adjusting bevel gear 202 is provided with a handle seat. The lower rear end of the adjusting bevel gear 202 meshes with the upper front end of the adjusting gear ring 201. The rear helical groove of the adjusting gear ring 201 meshes with the arc-shaped groove at the front end of the three adjusting frames 203. Each adjusting frame 203 has a plug-in 204 fixedly installed on its outer side. The three plug-in 204 are arranged in a ring, and the spacing between any two adjacent plug-in 204 is the same.

[0025] Each connector 204 has a magnet at its rear and outer sides, and the spacing between any two adjacent connectors 204 is the same.

[0026] When using: Insert the three connectors 204 into the slots of the electric screwdriver. Hold the handle of the adjusting bevel gear 202 and rotate it to make the adjusting bevel gear 202 rotate. Since the lower rear end of the adjusting bevel gear 202 meshes with the upper front end of the adjusting gear ring 201, the rotation of the adjusting bevel gear 202 will synchronously drive the adjusting gear ring 201 to rotate in the middle position inside the adjusting seat 2. The spiral groove on the circumferential surface of the rear end of the adjusting gear ring 201 meshes with the arc-shaped grooves at the front end of the three adjusting brackets 203. When the adjusting gear ring 201 rotates, it pushes the adjusting gear ring 201 through the transmission action of the spiral groove. The three adjusting brackets 203 slide synchronously along the Y-shaped groove at the rear end of the adjusting seat 2, which expands outward or contracts inward, so that the three adjusting bevel gears 202 match the slot position of the electric screwdriver. Until the outer position of the three plug-in parts 204 matches the inner diameter of the slot of the electric screwdriver, the adjusting bevel gear 202 handle is stopped to complete the adjustment. The magnetic attraction force of the plug-in parts 204 is used to attract the slot of the electric screwdriver, which plays an auxiliary positioning role to avoid misalignment during docking, and at the same time adapts to the slots of different models of electric screwdrivers.

[0027] Although this application has been described with reference to the foregoing embodiments, those skilled in the art will understand that various changes can be made without departing from the spirit and scope of this application as defined by the appended claims. While this specification contains details of many specific implementations, these should not be construed as limiting the scope of the claims, but rather as descriptions of features specific to particular embodiments. The scope of this application is defined by the appended claims and their equivalents, and is not limited to the embodiments described above.

Claims

1. A high-torque internal multi-tooth screwdriver bit, characterized in that: The device includes a replacement cutter head (1); the middle position of the rear end of the replacement cutter head (1) is fixedly connected to the middle position of the front end of the adjustment seat (2). The rear end of the adjustment seat (2) is provided with three sliding grooves, and the three sliding grooves at the rear end of the adjustment seat (2) are designed in a Y shape. An adjustment frame (203) is slidably connected in each of the three sliding grooves of the adjustment seat (2). The three adjustment frames (203) are distributed in a Y shape, and the spacing between each pair of adjacent adjustment frames (203) is the same. An arc groove is provided at the front end of each adjustment frame (203). An adjustment toothed ring (201) is rotatably connected in the middle position inside the adjustment seat (2). A spiral groove is provided on the circumferential position of the rear end of the adjustment toothed ring (201).

2. The high-torque internal multi-tooth screwdriver bit as described in claim 1, characterized in that: The upper part of the adjusting seat (2) is rotatably connected to the adjusting bevel gear (202). The top of the adjusting bevel gear (202) is provided with a handle seat, and the lower part of the rear end of the adjusting bevel gear (202) meshes with the upper part of the front end of the adjusting gear ring (201) for transmission.

3. The high-torque internal multi-tooth screwdriver bit as described in claim 2, characterized in that: The rear helical groove of the adjusting gear ring (201) engages with the arc-shaped groove at the front end of the three adjusting frames (203) for transmission.

4. The high-torque internal multi-tooth screwdriver bit as described in claim 3, characterized in that: Each of the adjustment frames (203) has a connector (204) fixedly installed on its outer side. The three connectors (204) are arranged in a ring, and the spacing between any two adjacent connectors (204) is the same.

5. The high-torque internal multi-tooth screwdriver bit as described in claim 4, characterized in that: Each of the three connectors (204) has a magnet at its rear and outer positions, and the spacing between any two adjacent connectors (204) is the same.

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