Adjustable ratchet wrench

Abstract

The utility model discloses an adjustable ratchet wrench, which belongs to the technical field of wrench tools and comprises a rotating seat, the outer surface of the rotating seat is fixedly connected with a transmission component, and the inside of the rotating seat is rotatably connected with an adjusting component; the transmission assembly comprises a first bevel gear, the interior of the first bevel gear is fixedly connected to the outer surface of the rotating seat, the outer surface of the first bevel gear is meshed with a second bevel gear, the interior of the second bevel gear is fixedly connected with a first connecting rod, and the interior of the first connecting rod is slidably connected with a second connecting rod. One end of the second connecting rod is fixedly connected with a rotating disc; by means of the transmission assembly, the rotating base is controlled by the rotating disc to rotate, the wrench body does not need to be integrally rotated, an operator can more conveniently screw a fastener in a narrow space, the working efficiency is improved, the situation that force cannot be effectively applied due to the limited space is avoided, the space and time are greatly saved, and the labor intensity of the operator is lowered. And the operation flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of wrench tools, specifically an adjustable ratchet wrench. Background Technology

[0002] A ratchet wrench is a highly efficient hand tool primarily used for quickly tightening or loosening nuts and bolts. Its ratchet mechanism allows users to apply force in one direction without frequently lifting the tool, thus improving work efficiency. They are generally available in various sizes and with adjustable opening designs to accommodate fasteners of different sizes. The handle is typically ergonomic, providing a comfortable grip. Made of high-strength materials, ratchet wrenches are durable and widely used in various fields such as automotive repair, mechanical assembly, and home appliance repair.

[0003] An investigation revealed that a Chinese utility model discloses an adjustable ratchet wrench (publication number: CN217833464U), comprising a wrench head, a wrench lever fixedly connected to the end of the wrench head, an extension rod installed at the end of the wrench lever, a first movable cavity being formed inside the wrench lever, and a first bevel gear being rotatably connected inside the first movable cavity of the wrench lever.

[0004] Although the aforementioned patent achieves flexible adjustment of the wrench handle length by rotating a knob, which in turn drives a connecting shaft, which in turn drives a first bevel gear in the first movable cavity, and the first and second bevel gears mesh with each other, in conjunction with the fixed shaft, causing the second bevel gear to drive the threaded rod in the second movable cavity to rotate, the relative rotation between the threaded rod and the threaded cylinder generates thread force, and the sliding of the limiting slider in the limiting groove pushes the extension rod to extend to the outside of the end of the wrench handle, thus avoiding limitations in use, its rotation may be restricted in confined working environments, resulting in insufficient torque for tightening or loosening operations, especially for fasteners in corners or hidden spaces. At the same time, the fixed opening size cannot accommodate fasteners of different sizes, limiting its versatility.

[0005] Therefore, this utility model provides an adjustable ratchet wrench to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides an adjustable ratchet wrench, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: it includes a rotating seat, a transmission component is fixedly connected to the outer surface of the rotating seat, and an adjustment component is rotatably connected to the inside of the rotating seat;

[0010] The transmission assembly includes a first bevel gear, the interior of which is fixedly connected to the outer surface of the rotating seat. A second bevel gear meshes with the outer surface of the first bevel gear. A first connecting rod is fixedly connected to the interior of the second bevel gear. A second connecting rod is slidably connected to the interior of the first connecting rod. One end of the second connecting rod is fixedly connected to a rotating disk.

[0011] As a preferred technical solution of this application, the adjustment assembly includes a first adjustment disk, the outer surface of the first adjustment disk is rotatably connected to the interior of the rotating seat, a positive and negative threaded rod is fixedly connected to the middle of the first adjustment disk, and chucks are threadedly connected to both sides of the outer surface of the positive and negative threaded rod, and a second adjustment disk is fixedly connected to both ends of the positive and negative threaded rod.

[0012] As a preferred technical solution of this application, a protective shell is rotatably connected to one end of the outer surface of the first connecting rod, and a handle assembly is fixedly connected to one side of the protective shell.

[0013] As a preferred technical solution of this application, the handle assembly includes an outer rod, one end of which is fixedly connected to one side of the protective shell, an inner rod is slidably connected inside the outer rod, and an anti-slip sleeve is sleeved on one end of the outer surface of the inner rod.

[0014] As a preferred technical solution of this application, a spring is fixedly connected to the edge of the outer surface of the inner rod, a locking block is fixedly connected to the top of the spring, and a plurality of matching slots are opened on one side of the outer surface of the outer rod.

[0015] As a preferred technical solution of this application, guide rods are fixedly connected to one side of the outer surface of the inner rod and one side of the outer surface of the second connecting rod, and guide grooves adapted to them are opened inside the outer rod and inside the first connecting rod.

[0016] (III) Beneficial Effects

[0017] 1. Through the transmission components, the rotating base is controlled by the rotating disc to rotate, eliminating the need to rotate the entire wrench body. This allows operators to tighten fasteners more conveniently even in narrow spaces, improving work efficiency and avoiding situations where force cannot be effectively applied due to space constraints. This greatly saves space and time and improves operational flexibility.

[0018] 2. The distance between the two clamps can be adjusted by the positive and negative threaded rods through the adjustable components, which allows the device to flexibly adapt to fasteners of different sizes, thereby significantly improving the versatility of the device and increasing operational efficiency. Attached Figure Description

[0019] Figure 1This is a schematic diagram of an adjustable ratchet wrench;

[0020] Figure 2 A bottom view schematic diagram of an adjustable ratchet wrench;

[0021] Figure 3 This is a schematic diagram of the rotating seat in an adjustable ratchet wrench.

[0022] Figure 4 A schematic diagram of the structure of the chuck in an adjustable ratchet wrench;

[0023] Figure 5 This is a schematic diagram of the inner rod of an adjustable ratchet wrench.

[0024] In the picture:

[0025] 1. Rotating seat; 2. First bevel gear; 3. Second bevel gear; 4. First connecting rod; 5. Second connecting rod; 6. Rotating disk; 7. First adjusting disk; 8. Positive and negative threaded rod; 9. Chuck; 10. Second adjusting disk; 11. Protective shell; 12. Outer rod; 13. Inner rod; 14. Anti-slip sleeve; 15. Spring; 16. Locking block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides an adjustable ratchet wrench, such as Figures 1-5 As shown, an adjustable ratchet wrench includes a rotating base 1, a transmission component fixedly connected to the outer surface of the rotating base 1, and an adjustment component rotatably connected to the inside of the rotating base 1.

[0028] The transmission assembly includes a first bevel gear 2, which is internally fixedly connected to the outer surface of the rotating seat 1. A second bevel gear 3 meshes with the outer surface of the first bevel gear 2. A first connecting rod 4 is fixedly connected internally to the second bevel gear 3. A second connecting rod 5 is slidably connected internally to the first connecting rod 4. A rotating disk 6 is fixedly connected to one end of the second connecting rod 5. Rotating the rotating disk 6 drives the first connecting rod 4 to rotate via the second connecting rod 5, causing the second bevel gear 3 to rotate. This, in turn, drives the rotating seat 1 to rotate, eliminating the need to rotate the entire wrench body. This allows operators to tighten fasteners more conveniently even in confined spaces, improving work efficiency and avoiding situations where force cannot be effectively applied due to space constraints. It greatly saves space and time and improves operational flexibility. At the same time, the length between the first connecting rod 4 and the second connecting rod 5 is adjustable to accommodate changes in the length between the outer rod 12 and the inner rod 13.

[0029] The adjustment assembly includes a first adjustment disc 7, the outer surface of which is rotatably connected to the interior of the rotating seat 1. A positive and negative threaded rod 8 is fixedly connected to the middle of the first adjustment disc 7. Both sides of the outer surface of the positive and negative threaded rod 8 are threadedly connected to clamps 9. Both ends of the positive and negative threaded rod 8 are fixedly connected to a second adjustment disc 10. Rotating the second adjustment disc 10 causes the positive and negative threaded rod 8 to rotate, which can adjust the distance between the two clamps 9. This allows the device to flexibly adapt to fasteners of different sizes, thereby significantly improving the versatility of the device and increasing operational efficiency. At the same time, when the device is difficult to clamp onto the outer surface of the fastener from above, it can be pushed forward to make the first adjustment disc 7 rub against the surface of the fastener, causing the positive and negative threaded rod 8 to rotate, so that the two clamps 9 clamp the fastener and tighten it.

[0030] A protective shell 11 is rotatably connected to one end of the outer surface of the first connecting rod 4. A handle assembly is fixedly connected to one side of the protective shell 11. The protective shell 11 is located on the outer surface of the first bevel gear 2 and the second bevel gear 3 to protect them and prevent them from being misaligned during operation.

[0031] The handle assembly includes an outer rod 12, one end of which is fixedly connected to one side of the protective shell 11. An inner rod 13 is slidably connected inside the outer rod 12. An anti-slip sleeve 14 is fitted onto one end of the outer surface of the inner rod 13. The anti-slip sleeve 14 is made of silicone to increase the friction when gripping and prevent slippage. The length of the handle can be adjusted by adjusting the length between the inner rod 13 and the outer rod 12 to suit different needs and improve applicability.

[0032] A spring 15 is fixedly connected to the edge of the outer surface of the inner rod 13. A locking block 16 is fixedly connected to the top of the spring 15. Several matching slots are opened on one side of the outer surface of the outer rod 12. The spring 15 pushes the locking block 16 into the corresponding slot, which can fix the length of the inner rod 13 and the outer rod 12.

[0033] Guide rods are fixedly connected to one side of the outer surface of the inner rod 13 and one side of the outer surface of the second connecting rod 5. Guide grooves that are adapted to each other are opened inside the outer rod 12 and the first connecting rod 4. The guide rods slide inside the guide grooves, which can prevent the inner rod 13 from rotating with the outer rod 12, the second connecting rod 5 and the first connecting rod 4, so that the wrench cannot be used normally.

[0034] Working steps: First, according to the required adjustment of the length between the inner rod 13 and the outer rod 12, the spring 15 pushes the locking block 16 into the corresponding slot, which can fix the length of the inner rod 13 and the extension of the outer rod 12, and the length between the first connecting rod 4 and the second connecting rod 5 changes accordingly. Next, rotating the second adjusting plate 10 drives the positive and negative threaded rod 8 to rotate, which can adjust the distance between the two clamps 9, so that the device can flexibly adapt to fasteners of different sizes. Second, when it is difficult for the device to be locked onto the outer surface of the fastener from above, the device can be pushed forward to make the first adjusting plate 7 rub against the surface of the fastener, drive the positive and negative threaded rod 8 to rotate, and make the two clamps 9 hold the fastener. Finally, when the space is narrow, the rotating plate 6 can be rotated to drive the first connecting rod 4 to rotate via the second connecting rod 5, so that the second bevel gear 3 rotates, and the first bevel gear 2 drives the rotating seat 1 to rotate, thus tightening the fastener.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable ratchet wrench, comprising a rotating base (1), characterized in that: A transmission assembly is fixedly connected to the outer surface of the rotating seat (1), and an adjustment assembly is rotatably connected inside the rotating seat (1); The transmission assembly includes a first bevel gear (2), the interior of which is fixedly connected to the outer surface of the rotating seat (1), a second bevel gear (3) meshing with the outer surface of the first bevel gear (2), a first connecting rod (4) fixedly connected to the interior of the second bevel gear (3), a second connecting rod (5) slidably connected to the interior of the first connecting rod (4), and a rotating disk (6) fixedly connected to one end of the second connecting rod (5).

2. An adjustable ratchet wrench according to claim 1, characterized in that: The adjustment assembly includes a first adjustment disc (7), the outer surface of which is rotatably connected to the interior of the rotating seat (1), a positive and negative threaded rod (8) is fixedly connected to the middle of the first adjustment disc (7), and a chuck (9) is threadedly connected to both sides of the outer surface of the positive and negative threaded rod (8), and a second adjustment disc (10) is fixedly connected to both ends of the positive and negative threaded rod (8).

3. An adjustable ratchet wrench according to claim 1, characterized in that: One end of the outer surface of the first connecting rod (4) is rotatably connected to a protective shell (11), and a handle assembly is fixedly connected to one side of the protective shell (11).

4. An adjustable ratchet wrench according to claim 3, characterized in that: The handle assembly includes an outer rod (12), one end of which is fixedly connected to one side of the protective shell (11). An inner rod (13) is slidably connected inside the outer rod (12), and an anti-slip sleeve (14) is sleeved on one end of the outer surface of the inner rod (13).

5. An adjustable ratchet wrench according to claim 4, characterized in that: A spring (15) is fixedly connected to the edge of the outer surface of the inner rod (13), and a locking block (16) is fixedly connected to the top of the spring (15). Several locking slots that are adapted to the outer rod (12) are opened on one side of the outer surface.

6. An adjustable ratchet wrench according to claim 5, characterized in that: Guide rods are fixedly connected to one side of the outer surface of the inner rod (13) and one side of the outer surface of the second connecting rod (5). Guide grooves that are compatible with the outer rod (12) and the first connecting rod (4) are provided inside the outer rod (12) and inside the first connecting rod (4).

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