Nut two-way engagement tightening wrench

Abstract

This utility model discloses a bidirectional engagement tightening wrench for nuts, including a left limiting block, a right limiting block, a gear shaft, a frame, and a pressure bar. Both the left and right limiting blocks are housed within the frame and are limited by the pressure bar. The gear shaft is mounted on the frame via bearings, with a gear fixedly mounted at one end of the gear shaft within the frame. The gear meshes with the left and right limiting blocks, causing them to move in opposite directions. This utility model utilizes the engagement of the gear with the left and right limiting blocks to lock the four sides of a hexagonal nut. When the torque of the torque wrench increases, it rotates the hexagonal nut, causing it to tighten or loosen quickly. Because the four sides of the hexagonal nut are locked during rapid tightening or loosening, and the tightening force increases with the tightening torque, there is no issue of the width increasing when tightening the hexagonal nut, thus preventing damage to the sharp corners of the nut.

Description

Technical Field

[0001] This utility model relates to a two-way engagement tightening wrench for nuts. Background Technology

[0002] When quickly tightening and loosening bolts and nuts, adjustable wrenches or Allen wrenches are often used to apply force to hexagonal nuts. Each type of Allen wrench corresponds to only one standard hexagonal nut, which is not very versatile and requires a variety of standard Allen wrenches to be collected, making them inconvenient to carry. While adjustable wrenches are more versatile due to their adjustable width, the width increases when tightening hexagonal nuts, which can damage the sharp corners of the hexagonal nut during the tightening process, making it impossible to disassemble. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a simple and reliable bidirectional meshing nut tightening wrench.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is: a two-way meshing tightening wrench for nuts, including a left limiting block, a right limiting block, a gear shaft, a frame, and a pressure bar. The left and right limiting blocks are both set inside the frame and are limited by the pressure bar to prevent the left and right limiting blocks from sliding out of the frame. The gear shaft is mounted on the frame through bearings, and a gear is fixedly set at one end of the gear shaft inside the frame. The gear meshes with the left and right limiting blocks, driving the left and right limiting blocks to move in opposite directions.

[0005] The aforementioned nut bidirectional engagement tightening wrench has a frame that is a semi-enclosed box structure composed of an upper side plate, a lower side plate, and a front side plate. Pressure strips are provided at the rear of both the upper and lower side plates.

[0006] The aforementioned nut bidirectional engagement tightening wrench, the left limiting block can move left and right within the frame, the left limiting block includes a left moving top plate and a left limiting plate, the left limiting plate is vertically provided at the middle position of the lower surface of the left moving top plate, the left limiting plate has a first hexagonal through groove in the middle, and a left rack is provided at the front end position of the lower surface of the left moving top plate.

[0007] The aforementioned nut bidirectional engagement tightening wrench allows the right limiting block to move left and right within the frame. The right limiting block includes a right moving base plate, a right limiting plate, and a right baffle. A right baffle is vertically positioned at the middle of the upper surface of the right moving base plate. A right rack is positioned at the front end of the upper surface of the right moving base plate. A right limiting plate is vertically positioned at the rear end of the upper surface of the right moving base plate. A second hexagonal through slot is opened in the middle of the right limiting plate. The left limiting block is upside down on the right limiting block, and the left limiting plate of the left limiting block is inserted between the right limiting plate and the right baffle of the right limiting block.

[0008] The aforementioned nut is tightened by a bidirectional meshing wrench, with the left and right racks located in the same vertical plane.

[0009] The aforementioned nut is tightened by a bidirectional engagement wrench, and the gear simultaneously engages with both the left and right racks.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model utilizes gears meshing with left and right limit blocks, causing them to move in opposite directions. A torque wrench connects to the square head of the gear shaft, rotating the shaft. The gears drive the double racks to move in opposite directions and lock the four sides of the hexagonal nut. When the torque of the torque wrench increases, it rotates the hexagonal nut, allowing it to be tightened or loosened quickly. Because the four sides of the hexagonal nut are locked during rapid tightening or loosening, and the locking force increases with tightening torque, there is no issue of the nut's width increasing when tightening, thus preventing damage to the sharp corners and ensuring more reliable operation.

[0012] 2. The width of this invention will automatically adjust when tightening the hexagonal nut, so it is suitable for hexagonal nuts of various sizes and has strong adaptability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 The right view.

[0015] Figure 3 This is a schematic diagram of the framework.

[0016] Figure 4 This is a schematic diagram of the left limiting block.

[0017] Figure 5 This is a schematic diagram of the right limit block.

[0018] Figure 6 This is a schematic diagram of the gear shaft. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 , Figure 2 , Figure 6As shown, a bidirectional nut tightening wrench includes a left limiting block 1, a right limiting block 2, a gear shaft 3, a frame 4, and a pressure strip 5. The left limiting block 1 and the right limiting block 2 are both set inside the frame 4 and are limited by the pressure strip 5 to prevent the left limiting block 1 and the right limiting block 2 from sliding out of the frame 4. The gear shaft 3 is mounted on the frame 4 through bearings. A gear 6 is fixedly installed at one end of the gear shaft 3 inside the frame 4, and a square head 7 is installed at the other end of the gear shaft 3 outside the frame 4. The gear 6 meshes with the left limiting block 1 and the right limiting block 2, driving the left limiting block 1 and the right limiting block 2 to move in opposite directions.

[0021] like Figure 3 As shown, the frame 4 is a semi-enclosed box structure composed of an upper side plate 8, a lower side plate 9, and a front side plate 10. Pressure strips 5 are fixed to the rear of the upper side plate 8 and the rear of the lower side plate 9 by bolts.

[0022] like Figure 4 As shown, the left limiting block 1 can move left and right within the frame 4. The left limiting block 1 includes a left moving top plate 11 and a left limiting plate 12. The left limiting plate 12 is vertically provided at the middle position of the lower surface of the left moving top plate 11. The left limiting plate 12 has a first hexagonal through groove 13 in the middle. The left moving top plate 11 has a left rack 14 at the front end of the lower surface of the left moving top plate 11.

[0023] like Figure 5 As shown, the right limiting block 2 can move left and right within the frame 4. The right limiting block 2 includes a right moving base plate 15, a right limiting plate 16, and a right baffle 17. The right baffle 17 is vertically positioned at the middle of the upper surface of the right moving base plate 15. A right rack 18 is positioned at the front end of the upper surface of the right moving base plate 15. The right limiting plate 16 is vertically positioned at the rear end of the upper surface of the right moving base plate 15. A second hexagonal through groove 19 is opened in the middle of the right limiting plate 16. The positions of the first hexagonal through groove 13 and the second hexagonal through groove 19 are corresponding, and they are used to engage the two sides of the hexagonal nut, respectively. The left limiting block 1 is upside down on the right limiting block 2. The left limiting plate 12 of the left limiting block 1 is inserted between the right limiting plate 16 and the right baffle 17 of the right limiting block 2. The left rack 14 and the right rack 18 are located in the same vertical plane. The gear 6 meshes with both the left rack 14 and the right rack 18.

[0024] like Figure 1As shown, in use, the center of gear shaft 3 is aligned with the center of hexagonal nut 20. A torque wrench connected to the square head 7 of gear shaft 3 rotates gear shaft 3, causing gear 6 to drive the double racks to move in opposite directions and lock the four sides of hexagonal nut 20. When the torque of the torque wrench increases, it will drive the hexagonal nut 20 to rotate, allowing it to be tightened or loosened quickly. Because the four sides of hexagonal nut 20 are locked during rapid tightening or loosening, and the locking force increases with the tightening torque, there is no issue of the width of hexagonal nut 20 increasing when tightening, meaning no damage will be caused to the sharp corners of hexagonal nut 20. Since the width of hexagonal nut 20 self-adjusts when tightening, it has strong adaptability.

Claims

1. A nut-tightening wrench with bidirectional engagement, characterized in that: It includes a left limiting block, a right limiting block, a gear shaft, a frame, and a pressure strip. The left and right limiting blocks are both set inside the frame and are limited by the pressure strip to prevent them from sliding out of the frame. The gear shaft is mounted on the frame by bearings. A gear is fixedly installed at one end of the gear shaft inside the frame. The gear meshes with the left and right limiting blocks and drives them to move in opposite directions.

2. The bidirectional engagement nut tightening wrench according to claim 1, characterized in that: The frame is a semi-enclosed box structure composed of an upper side plate, a lower side plate, and a front side plate. Pressure strips are provided at the rear of both the upper and lower side plates.

3. The bidirectional engagement nut tightening wrench according to claim 2, characterized in that: The left limiting block can move left and right within the frame. The left limiting block includes a left moving top plate and a left limiting plate. The left limiting plate is vertically provided at the middle position of the lower surface of the left moving top plate. A first hexagonal through groove is opened in the middle of the left limiting plate. A left toothed rack is provided at the front end position of the lower surface of the left moving top plate.

4. The bidirectional engagement nut tightening wrench according to claim 3, characterized in that: The right limiting block can move left and right within the frame. The right limiting block includes a right moving base plate, a right limiting plate, and a right baffle. The right baffle is vertically provided at the middle position of the upper surface of the right moving base plate. A right rack is provided at the front end position of the upper surface of the right moving base plate. The right limiting plate is vertically provided at the rear end position of the upper surface of the right moving base plate. A second hexagonal through slot is opened in the middle of the right limiting plate. The left limiting block is upside down on the right limiting block. The left limiting plate of the left limiting block is inserted between the right limiting plate and the right baffle of the right limiting block.

5. The bidirectional engagement nut tightening wrench according to claim 4, characterized in that: The left and right racks are located in the same vertical plane.

6. The bidirectional engagement nut tightening wrench according to claim 4, characterized in that: The gear meshes with both the left and right racks simultaneously.

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