Seven-in-one impact sleeve

Abstract

The invention discloses a seven-in-one impact sleeve, and relates to the technical field of sleeve spanners, the seven-in-one impact sleeve comprises a magnetic connecting rod, the top end of the magnetic connecting rod is connected with a chuck of a power tool, a magnet is embedded and fixed at the bottom end of the magnetic connecting rod, three annular clamping grooves are axially formed in the surface of the magnetic connecting rod, and a double-end sleeve is slidably arranged on the outer side of the magnetic connecting rod in a sleeving manner; the double-end sleeve is detachably installed at the annular clamping groove of the magnetic connecting rod through a locking mechanism. The high-strength and multi-size integrated impact sleeve assembly solves the problems that a traditional sleeve assembly is inconvenient to carry and tedious to replace, reliable connection, direct force transmission and rapid switching under the impact working condition are ensured by optimizing the connecting mode of the sleeve and the connecting rod, and the magnetic attraction function is integrated, so that the magnetic attraction effect is achieved. The working end of the sleeve has the capacity of strongly magnetically adsorbing screws / nuts, the operation convenience is improved, modular combination can be achieved, a user can freely match components according to common sizes, and tool combination is more flexible.

Description

Technical Field

[0001] This invention relates to the field of socket wrench technology, and more particularly to a seven-in-one impact socket. Background Technology

[0002] A socket is short for a socket wrench. Because it fits over various wrenches and is cylindrical in shape, it is commonly called a socket and is a frequently used tool in production, maintenance, and daily life. Sockets are suitable for tightening bolts or nuts in very confined or deeply recessed areas. They can be divided into cold-extruded sockets, tapered thread sockets, and straight thread sockets. A socket consists of multiple sockets with hexagonal or dodecagonal holes and is equipped with handles, extension rods, and other accessories.

[0003] Currently, there are two types of sleeves: traditional sleeves and one-piece molded multi-size sleeves. The disadvantages of traditional sleeves are: 1. Inconvenient to carry. Usually, you need to carry a whole box (such as a 12-piece or 24-piece set) of individual sockets of different sizes. The tool box is bulky and heavy.

[0004] 2. Changing is cumbersome. During operation, it is necessary to frequently change different sizes of sockets, which requires searching and taking them out of the toolbox, resulting in low efficiency and small parts are easy to lose.

[0005] 3. Limited applicability: Standard impact sleeves are mostly single-ended or double-ended (one size per end), resulting in low tool utilization when dealing with bolts of various sizes.

[0006] 4. Magnetic function issue: Ordinary sockets are non-magnetic, making it easy for screws or nuts to fall out in confined spaces, increasing the difficulty of operation. A separate magnetic extension rod requires additional preparation and assembly.

[0007] In addition, the disadvantages of one-piece molded multi-size sleeves are: This type of multi-size sleeve is usually integrally molded, with all dimensions concentrated at one end and a drive square hole at the other end. This structure is not strong enough, especially under high torque impact conditions, and is prone to stress concentration and breakage in non-use dimensions.

[0008] In view of the shortcomings of existing traditional sleeves and one-piece molded multi-size sleeves, this invention proposes a seven-in-one impact sleeve. Summary of the Invention

[0009] The purpose of this invention is to address the deficiencies in the existing technology by proposing a seven-in-one impact sleeve.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: A seven-in-one impact sleeve includes a magnetic extension rod, the top of which is connected to the chuck of a power tool, and a magnet is embedded and fixed at the bottom of the magnetic extension rod. Three annular grooves are axially opened on the surface of the magnetic extension rod. A double-headed sleeve is slidably fitted on the outside of the magnetic extension rod. The double-headed sleeve is detachably installed at the annular grooves of the magnetic extension rod by a locking mechanism. The double-ended sleeve is divided into a small sleeve, a medium sleeve and a large sleeve from top to bottom. The small sleeve, the medium sleeve and the large sleeve are all provided with an internal hexagonal through hole in the middle, and are slidably fitted with the magnetic connecting rod through the internal hexagonal through hole. The top of the small, medium, and large sleeves are all provided with a first internal hexagonal hole, and the bottom of the small, medium, and large sleeves are all provided with a second internal hexagonal hole.

[0011] Furthermore, the diameter of the first internal hexagonal hole at the top of the small sleeve is equal to the diameter of the internal hexagonal through hole, and the diameter of the second internal hexagonal hole at the bottom of the small sleeve is larger than the diameter of the internal hexagonal through hole.

[0012] Furthermore, the diameter of the first internal hexagonal hole at the top and the diameter of the second internal hexagonal hole at the bottom of the medium-sized sleeve are both larger than the diameter of the internal hexagonal through hole.

[0013] Furthermore, the diameter of the first internal hexagonal hole at the top and the diameter of the second internal hexagonal hole at the bottom of the large sleeve are both larger than the diameter of the internal hexagonal through hole.

[0014] Furthermore, the outer walls of the small, medium, and large sleeves are all provided with annular limiting grooves and stepped mounting holes. The stepped mounting holes are interconnected with the internal hexagonal through holes. The locking mechanism includes a steel ball and a spring installed in the stepped mounting hole, and also includes a spring cap installed in the annular limiting groove. One end of the spring abuts against the steel ball, and the other end of the spring extends outward from the stepped mounting hole and is limited by the spring cap.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a high-strength, multi-size integrated impact sleeve assembly, which can solve the problems of inconvenience in carrying and cumbersome replacement of traditional sleeve assemblies.

[0016] 2. This invention optimizes the connection method between the sleeve and the connecting rod, ensuring reliable connection, direct force transmission, and rapid switching under impact conditions.

[0017] 3. By integrating magnetic attraction, this invention enables the sleeve to strongly magnetically attract screws / nuts at the working end, thereby improving operational convenience.

[0018] 4. This invention enables modular combination, allowing users to freely combine components according to commonly used sizes, making tool combinations more flexible. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the magnetic connecting rod in this invention; Figure 3 From left to right, the images show the top view, front view, and bottom view of the small sleeve. Figure 4 From left to right, the images show the top view, front view, and bottom view of the medium-sized sleeve. Figure 5 From left to right, the top view, front view, and bottom view of the large sleeve are shown in the image. Figure 6 This is a partial sectional view of the double-ended sleeve; Figure 7 for Figure 6 Enlarged view of part a of the structure; Figure 8 for Figure 6 Schematic diagram showing the location of the mounting holes in the middle step; Figure 9 for Figure 8 Enlarged view of part a of the structure.

[0021] In the diagram: 1 Magnetic connecting rod, 2 Double-ended sleeve, 3 Magnet, 4 Annular groove, 5 Spring cap, 6 Spring, 7 Hexagonal socket, 8 Stepped mounting hole, 9 Steel ball, 21 Small sleeve, 22 Medium sleeve, 23 Large sleeve, 20 First hexagonal socket, 200 Second hexagonal socket. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; Reference Figure 1-9 The seven-in-one impact sleeve includes a magnetic connecting rod 1. The top end of the magnetic connecting rod 1 is connected to the chuck of the power tool. A magnet 3 is embedded and fixed at the bottom end of the magnetic connecting rod 1. Three annular slots 4 are axially opened on the surface of the magnetic connecting rod 1. A double-headed sleeve 2 is slidably sleeved on the outside of the magnetic connecting rod 1. The double-headed sleeve 2 is detachably installed at the annular slots 4 of the magnetic connecting rod 1 through a locking mechanism. The double-ended sleeve 2 is divided into a small sleeve 21, a medium sleeve 22 and a large sleeve 23 from top to bottom. The small sleeve 21, the medium sleeve 22 and the large sleeve 23 are all provided with an internal hexagonal through hole 7 in the middle, and are slidably fitted with the magnetic connecting rod 1 through the internal hexagonal through hole 7. The top of the small sleeve 21, the medium sleeve 22 and the large sleeve 23 are all provided with a first internal hexagonal hole 20, and the bottom of the small sleeve 21, the medium sleeve 22 and the large sleeve 23 are all provided with a second internal hexagonal hole 200.

[0023] Furthermore, the diameter of the first internal hexagonal hole 20 at the top of the small sleeve 21 is equal to the diameter of the internal hexagonal through hole 7, and the diameter of the second internal hexagonal hole 200 at the bottom of the small sleeve 21 is greater than the diameter of the internal hexagonal through hole 7.

[0024] Furthermore, the diameter of the first internal hexagonal hole 20 at the top of the medium-sized sleeve 22 and the diameter of the second internal hexagonal hole 200 at the bottom are both larger than the diameter of the internal hexagonal through hole 7.

[0025] Furthermore, the diameter of the first internal hexagonal hole 20 at the top of the large sleeve 23 and the diameter of the second internal hexagonal hole 200 at the bottom are both larger than the diameter of the internal hexagonal through hole 7.

[0026] Specifically, in this embodiment, the diameter of the internal hexagonal through hole 7 is 1 / 4 inch (1 inch equals 25.4 millimeters). The diameter of the first internal hexagonal hole 20 at the top of the small sleeve 21 is 1 / 4 inch; the diameter of the second internal hexagonal hole 200 at the bottom of the small sleeve 21 is 5 / 16 inch. The diameter of the first internal hexagonal hole 20 at the top of the medium sleeve 22 is 3 / 8 inch, and the diameter of the second internal hexagonal hole 200 at the bottom of the medium sleeve 22 is 7 / 16 inch. The diameter of the first internal hexagonal hole 20 at the top of the large sleeve 23 is 1 / 2 inch, and the diameter of the second internal hexagonal hole 200 at the bottom of the large sleeve 23 is 9 / 16 inch. In other embodiments, the inner diameter of the first hexagonal socket 20 and the second hexagonal socket 200 of each double-ended sleeve 2 may also adopt other specific dimensions as needed, but it is necessary to ensure that the diameter of the first hexagonal socket 20 and the second hexagonal socket 200 is larger than the diameter of the hexagonal through hole 7.

[0027] Furthermore, the outer walls of the small sleeve 21, the medium sleeve 22, and the large sleeve 23 are all provided with annular limiting grooves and stepped mounting holes 8. The stepped mounting holes 8 are interconnected with the internal hexagonal through holes 7. The locking mechanism includes a steel ball 9 and a spring 6 installed in the stepped mounting holes 8, and also includes a spring cap 5 installed in the annular limiting groove. One end of the spring 6 abuts against the steel ball 9, and the other end of the spring 6 extends outward from the stepped mounting holes 8 and is limited by the spring cap 5.

[0028] In this invention, the magnetic extension rod 1 serves as the central drive and connection hub for the entire tool. The top of the magnetic extension rod 1 is a standard 1 / 4-inch hex shank, designed for direct insertion into the chuck of power tools such as electric drills, impact screwdrivers, or electric screwdrivers to receive rotational torque. The rod body of the magnetic extension rod 1 is a hexagonal prism, designed to insert into the hexagonal through-hole 7 in the center of the double-ended socket 2. Three annular slots 4 are spaced axially along the rod body. The size and spacing of these annular slots 4 are designed to engage and lock with the steel balls 9 in the center of different double-ended sockets 2. This multi-slot design allows the double-ended socket 2 to be inserted at different depths to accommodate different geometry or provide different effective working lengths. At the bottom is a magnet 3, tightly fitted at the center of the bottom end face of the magnetic extension rod 1, with its magnetic poles oriented axially to ensure maximum efficiency in forward transmission of magnetic force.

[0029] The installation relationship of the components in this invention is as follows: During assembly, the axis of the bottom of the magnetic connecting rod 1 must be aligned with the axis of the hexagonal through hole 7 of the three double-ended sleeves 2 (i.e., small sleeve 21, medium sleeve 22, and large sleeve 23). Insert the bottom of the magnetic connecting rod 1 into the hexagonal through hole 7 of the double-ended sleeve 2 along this axis. When inserted to the predetermined depth, the internal locking mechanism activates, completing the installation and combining the two into a single, operable rigid unit.

[0030] The working principle of the locking mechanism in this invention is as follows: In its natural state, the spring 6 in the locking mechanism can push the steel ball 9 inward, causing it to partially protrude from the inner wall of the internal hexagonal through hole 7. A spring cap 5 on the outside of the stepped mounting hole 8 seals the space, preventing the steel ball 9 and spring 6 from popping out. When the magnetic connecting rod 1 is inserted into the hexagonal through hole 7 of the double-headed sleeve 2, the end of the magnetic connecting rod 1 presses against the steel ball 9 and spring 6, causing the steel ball 9 to fully enter the stepped mounting hole 8. As the magnetic connecting rod 1 continues to be inserted, the steel ball 9 can abut against the annular groove 4, at which point the locking mechanism locks the double-headed sleeve 2 onto the magnetic connecting rod 1. During disassembly, pull out the magnetic rod 1 in the opposite direction to the installation direction (i.e., pull it out axially) and apply sufficient pulling force to release the locking mechanism, that is, the steel ball 9 slides out from the annular groove 4, thereby separating the double-ended sleeve 2 from the magnetic rod 1.

[0031] The connection relationship of each component in this invention is as follows: The outer surface of the bottom of the magnetic extension rod 1 and the inner surface of the hexagonal through hole 7 of the double-ended sleeve 2 form a polygonal sliding fit. Through the contact and compression between the sides, the torque (rotational force) is directly transmitted from the magnetic extension rod 1 to the double-ended sleeve 2. This connection is responsible for completing the main tool function, namely tightening or loosening screws.

[0032] Under the preload of the spring 6, the steel ball 9 inside the double-ended sleeve 2 is engaged in the annular groove 4 on the magnetic connecting rod 1. The engagement of the steel ball 9 and the annular groove 4 forms a mechanical self-locking mechanism. This mainly constrains the relative movement of the magnetic connecting rod 1 and the double-ended sleeve 2 in the axial direction, preventing the double-ended sleeve 2 from accidentally falling off due to vibration or tension during operation. This connection is crucial to ensuring the safety and reliability of tool operation.

[0033] The magnetic field generated by the magnet 3 at the bottom of the magnetic connecting rod 1 is conducted through the metal parts and forms an adsorption force at the working end of each double-ended sleeve 2. This connection is not a physical rigid connection, but a kind of field force coupling, which is used to attract screws or nuts before and during operation, providing operational convenience.

[0034] The operational relationships of the various components of this invention are as follows: Locking action: During the installation (insertion) process, the steel ball 9 is pressed back by the outer wall of the magnetic connecting rod 1, and then springs into the annular slot 4 under the action of the spring 6, accompanied by a "click" sound, completing the transition from moving to locked state.

[0035] Unlocking action: During disassembly (pulling out), the applied axial tension forces the inclined surface of the annular groove 4 to force the steel ball 9 to overcome the spring force and retract again, completing the state transition from locked to released.

[0036] Switching action: Users can quickly switch between different sizes of double-ended socket 2, namely small socket 21, medium socket 22 and large socket 23, by performing a series of actions: "pull out → select / flip → insert and lock".

[0037] Working principle of the invention: 1. Functional Integration and Conversion: The tool integrates three double-ended sleeves 2 and magnetic connecting rods 1 through a modular design. Users can instantly switch between different functional modules (sizes) through a simple axial plugging and unplugging action (installation relationship).

[0038] 2. Power and Load Path: The torque of the externally driven tool is transmitted through a path established by a circumferential torque connection: hexagonal shank at the top of the magnetic extension rod → the rod body of the magnetic extension rod → the bottom magnet → the internal hexagonal through-hole of the double-ended socket → the target working end → the screw. This path is designed to be direct, with smooth force flow, and can withstand high torque impacts.

[0039] 3. Operational safety assurance: When subjected to working load, the "steel ball-ring groove" self-locking mechanism formed by the axial locking connection acts as a reliable anti-reverse device, ensuring that the functional module (double-headed sleeve) will not separate from the drive module (magnetic connecting rod) under high-intensity and high-vibration conditions, resulting in a high safety factor.

[0040] 4. Enhanced ease of operation: The magnetic connection allows the screw to be automatically attracted and aligned when inserted into the working hole, and to be pulled out when unscrewed, simplifying the operation steps and making it particularly suitable for scenarios with poor visibility or limited space.

[0041] This invention has the following characteristics: Highly efficient and portable: It provides 6 common sizes with only 4 components (3 double-ended sockets + 1 magnetic extension rod) and can be connected in series to form a whole, greatly reducing the number and size of tools, making it extremely convenient to carry and store.

[0042] Quick switching: The double-ended socket adopts a central connection (the fit between the magnetic connecting rod and the internal hexagonal through hole) and a quick locking design (the fit between the steel ball and the annular groove), making it very quick to switch sizes or change ends without having to search in the toolbox, thus significantly improving work efficiency.

[0043] High strength and reliability: The unique "central connection" structure makes the force flow more direct, avoiding the structural weaknesses of traditional combination tools. It is especially suitable for the high torque conditions of impact wrenches and has extremely high durability.

[0044] Easy to operate: The built-in magnetic function requires no additional accessories and can effectively attract screws and nuts, preventing them from falling out in narrow spaces, enabling one-handed operation, especially suitable for high-altitude and deep-hole operations.

[0045] Modular and flexible: Users can select different sizes of double-headed sockets to customize personalized tool sets according to their own work needs, making them highly versatile.

Claims

1. A seven-in-one impact sleeve, comprising a magnetic connecting rod (1), characterized in that, The top end of the magnetic connecting rod (1) is connected to the chuck of the power tool, and a magnet (3) is embedded and fixed at the bottom end of the magnetic connecting rod (1). Three annular slots (4) are axially opened on the surface of the magnetic connecting rod (1). A double-headed sleeve (2) is slidably sleeved on the outside of the magnetic connecting rod (1). The double-headed sleeve (2) is detachably installed at the annular slots (4) of the magnetic connecting rod (1) through a locking mechanism. The double-ended sleeve (2) is divided into a small sleeve (21), a medium sleeve (22) and a large sleeve (23) from top to bottom. The small sleeve (21), the medium sleeve (22) and the large sleeve (23) are all provided with an internal hexagonal through hole (7) in the middle, and are slidably fitted with the magnetic connecting rod (1) through the internal hexagonal through hole (7). The top of the small sleeve (21), medium sleeve (22) and large sleeve (23) are all provided with a first internal hexagonal hole (20), and the bottom of the small sleeve (21), medium sleeve (22) and large sleeve (23) are all provided with a second internal hexagonal hole (200).

2. The seven-in-one impact sleeve according to claim 1, characterized in that, The diameter of the first internal hexagonal hole (20) at the top of the small sleeve (21) is equal to the diameter of the internal hexagonal through hole (7), and the diameter of the second internal hexagonal hole (200) at the bottom of the small sleeve (21) is greater than the diameter of the internal hexagonal through hole (7).

3. The seven-in-one impact sleeve according to claim 2, characterized in that, The diameter of the first internal hexagonal hole (20) at the top and the diameter of the second internal hexagonal hole (200) at the bottom of the medium sleeve (22) are both larger than the diameter of the internal hexagonal through hole (7).

4. The seven-in-one impact sleeve according to claim 3, characterized in that, The diameter of the first internal hexagonal hole (20) at the top and the diameter of the second internal hexagonal hole (200) at the bottom of the large sleeve (23) are both larger than the diameter of the internal hexagonal through hole (7).

5. The seven-in-one impact sleeve according to claim 1, characterized in that, The outer walls of the small sleeve (21), medium sleeve (22) and large sleeve (23) are all provided with annular limiting grooves and stepped mounting holes (8). The stepped mounting holes (8) are connected to the internal hexagonal through holes (7). The locking mechanism includes a steel ball (9) and a spring (6) installed in the stepped mounting hole (8), and also includes a spring cap (5) installed in the annular limiting groove. One end of the spring (6) abuts against the steel ball (9), and the other end of the spring (6) extends outward from the stepped mounting hole (8) and is limited by the spring cap (5).

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