Ratchet wrench with automatic adjustment of the opening amount

Abstract

The utility model relates to spanner technical field, concretely is a kind of ratchet spanner with automatic adjusting opening amount, the utility model includes: spanner body, the middle part position of spanner body both sides is equipped with sliding slot, the middle position of sliding slot is provided with spring hole, spring hole is equipped with spring in compressed state, the lower part position of spanner body is equipped with through-hole;Spanner mouth, the lower part of spanner mouth is the hollow structure compatible with spanner body, and the lower part of spanner mouth is equipped with peg hole;Pin, pass through peg hole and spring hole, and the periphery of pin and the one end of spring hole are in contact;And handle, between spanner body and through pin shaft rotation connection, and transmission connection between spanner mouth to drive spanner mouth move along sliding slot;The utility model passes through the linkage structure of spanner body, sliding slot, spring, spanner mouth and handle, realizes opening amount self-regulation, can be compatible with multiple specifications bolt and nut without additional sleeve, improve the versatility of the utility model.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, specifically a ratchet wrench with automatic adjustment of the opening amount. Background Technology

[0002] A ratchet wrench is a tool used to repeatedly tighten or loosen bolts, nuts, and other fasteners. Due to its high efficiency and convenience, it is widely used in many fields. A ratchet wrench mainly consists of a ratchet, pawl, spring, and switch. It can quickly tighten or loosen bolts and nuts in confined spaces without repeatedly disassembling the wrench, making it easy to operate and effectively improving work efficiency.

[0003] Currently, ratchet wrenches on the market mainly use different sizes of sockets to tighten bolts and nuts of different sizes, and cannot handle fasteners of different sizes on their own.

[0004] Therefore, it is necessary to develop a ratchet wrench with automatic adjustment of the opening amount. Utility Model Content

[0005] The purpose of this invention is to provide a ratchet wrench with automatic adjustment of the opening amount to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions: A ratchet wrench with automatically adjustable opening amount, comprising: The lever body has a sliding groove at the middle of both sides, a spring hole at the middle of the sliding groove, a spring in a compressed state installed in the spring hole, and a through hole at the lower part of the lever body. The lower part of the wrench is a hollow structure adapted to the wrench body, and a pin hole is provided in the lower part of the wrench. A pin passes through a pin hole and a spring hole, with the outer edge of the pin abutting against one end of the spring hole; The handle is rotatably connected to the wrench body via a pin and is also connected to the wrench mouth via a transmission connection to drive the wrench mouth to move along the slide.

[0007] Furthermore, U-shaped grooves are provided on both sides of the wrench, and bosses that cooperate with the sliding grooves are provided on the two inner walls of the wrench. When the wrench is assembled with the wrench body, the two bosses slide in the two grooves respectively to limit the sliding trajectory of the wrench on the wrench body.

[0008] Furthermore, the slide groove runs horizontally through the plate body, and the width of the slide groove is greater than the width of the boss.

[0009] Furthermore, the two grooves of the spring hole are connected, and the width of the spring hole is greater than the diameter of the pin.

[0010] Furthermore, one end of the spring is fixedly connected to the end corresponding to the spring hole, and the other end is pressed into contact with the periphery of the pin.

[0011] Furthermore, the front end of the handle is provided with a fork that mates with the U-shaped groove, and a mounting groove is provided at the front end of the handle, with pin holes provided on both sides of the mounting groove. The lower part of the lever body is inserted into the assembly groove, and is rotatably connected to the handle through the pin shaft passing through the pin shaft hole and the through hole on the lever body; The handle has a tail hole near its tail end.

[0012] The beneficial effects of this utility model are: This utility model achieves autonomous adjustment of the opening amount through the linkage structure of the wrench body, slide groove, spring, wrench mouth and handle, and can be adapted to various specifications of bolts and nuts without the need for an additional sleeve, thus improving the versatility of this utility model. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 The left view; Figure 3 This is a three-dimensional schematic diagram of the plate opening in this utility model; The reference numerals in the attached figures are as follows: 1-Band body; 2-Band mouth; 3-Slide groove; 4-Spring; 5-Spring hole; 6-Pin; 7-Pin hole; 8-Handle; 9-U-shaped groove; 10-Pin shaft; 11-Pin shaft hole; 12-Boss; 13-Tail hole. Detailed Implementation

[0014] 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.

[0015] Example 1: Please see Figures 1-3In this embodiment of the present invention, a ratchet wrench with automatically adjustable opening amount includes: The lever body 1 has a sliding groove 3 on both sides of the middle position. A spring hole 5 is provided in the middle position of the sliding groove 3. A spring 4 in a compressed state is installed in the spring hole 5. A through hole is provided at the lower part of the lever body 1. The lower part of the wrench 2 is a hollow structure that fits the wrench body 1, and the lower part of the wrench 2 has a pin hole 7. Pin 6 passes through pin hole 7 and spring hole 5, and the outer periphery of pin 6 abuts against one end of spring hole 5; The handle 8 is rotatably connected to the wrench body 1 via a pin 10 and is also connected to the wrench mouth 2 via a transmission connection to drive the wrench mouth 2 to move along the slide groove 3.

[0016] When not in use, one end of the spring 4 abuts against the inner wall of the spring hole, and the other end contacts the pin 6. Under the action of the elastic force, the pin 6 drives the wrench 2 to stay in the maximum opening position along the slide groove 3 of the wrench body 1, which facilitates the quick insertion of the workpiece to be turned.

[0017] In use, align the wrench 2 with the bolt or nut to be tightened and initially engage it. Then, apply a tightening force to the handle 8. At this time, the handle 8 drives the wrench 2 to slide along the groove 3. Simultaneously, the wrench 2 further compresses the spring 4 through the pin 6. As the compression of the spring 4 increases, the opening of the wrench 2 gradually decreases with the sliding distance until the inner wall of the wrench 2 is tightly fitted with the outer wall of the workpiece, achieving stable clamping of the workpiece. Then, the workpiece can be tightened by the handle 8.

[0018] When the wrench is turned to the angle of handle 8, which is unfavorable for applying force, the force applied to handle 8 is stopped. At this time, spring 4 releases its compressive potential energy, pushing pin 6 to cause wrench jaw 2 to slide in the opposite direction along slide groove 3. The opening of wrench jaw 2 increases again, and it no longer clamps the workpiece. The operator does not need to remove the wrench from the workpiece; they can simply place handle 8 at an angle favorable for applying force and apply force again to repeat the above clamping and turning process, realizing the coordinated operation of automatic adjustment of opening amount and ratchet function.

[0019] This invention can adapt to workpieces of various specifications without the need for an additional sleeve within a certain range: through the linkage adjustment of spring 4 and wrench 2, it can adapt to bolts and nuts of different diameters, avoiding frequent sleeve replacements.

[0020] Example 2: Please see Figures 1-3 Based on embodiment 1, U-shaped grooves 9 are provided on both sides of the wrench 2, and bosses 12 that cooperate with the sliding groove 3 are provided on the two inner walls of the wrench 2. When the wrench 2 is assembled and connected to the wrench body 1, the two bosses 12 slide in the two grooves 3 respectively to limit the sliding trajectory of the wrench 2 on the wrench body 1.

[0021] The slide 3 runs horizontally through the plate 1, and the width of the slide 3 is greater than the width of the boss 12.

[0022] The two grooves 3 of the spring hole 5 are connected, and the width of the spring hole 5 is greater than the diameter of the pin 6.

[0023] One end of the spring 4 is fixedly connected to the end corresponding to the spring hole 5, and the other end is pressed into contact with the outer periphery of the pin 6.

[0024] In this embodiment, the slide groove 3 runs horizontally through the middle of the body 1 along the length direction, and the width of the slide groove 3 is only slightly larger than the width of the boss 12 of the opening 2; at the same time, the width of the spring hole 5 is larger than the diameter of the pin 6, ensuring that the pin 6 can move smoothly and synchronously with the opening 2.

[0025] When not in use, the pre-compression force of spring 4 pushes the wrench 2 to one end of the slide groove 3 through pin 6, maintaining the maximum opening. When in use, force is applied to handle 8, causing wrench 2 to slide along slide groove 3 to the other end. At the same time, pin 6 moves smoothly in spring hole 5, ensuring that spring 4 is compressed evenly. After the force is stopped, spring 4 pushes pin 6 and wrench 2 back to their original trajectory, and the angle of handle 8 can be readjusted to continue to screw the workpiece.

[0026] Example 3: Please see Figures 1-3 Based on embodiment 2, the front end of the handle 8 is provided with a fork that works with the U-shaped groove 9, and the front end of the handle 8 is provided with an assembly groove, and pin holes 11 are provided on both sides of the assembly groove. The lower part of the lever body 1 is inserted into the assembly groove, and is rotatably connected to the handle 8 through the pin 10 passing through the pin hole 11 and the through hole on the lever body 1. The handle 8 has a tail hole 13 near the tail end.

[0027] In this embodiment, the fork at the head of the handle 8 is adapted to the U-shaped groove 9 of the lever 2 to ensure that the fork does not disengage from the U-shaped groove 9 during transmission.

[0028] When not in use, spring 4 pushes the wrench 2 to its maximum opening. When in use, after the wrench 2 is inserted into the workpiece, force is applied to the handle 8. The fork drives the wrench 2 to slide along the slide groove 3 through the U-shaped groove 9. Spring 4 is compressed, and the wrench 2 clamps the workpiece. After the turning angle is limited, the force is stopped, spring 4 pushes the wrench 2 to reset, and the opening increases. At this time, the handle 8 can rotate freely around the pin 10 to a suitable angle.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A ratchet wrench with automatically adjustable opening amount, characterized in that, include: The lever body (1) has a sliding groove (3) at the middle of both sides, a spring hole (5) at the middle of the sliding groove (3), a spring (4) in a compressed state is installed in the spring hole (5), and a through hole is provided at the lower part of the lever body (1). The lower part of the wrench (2) is a hollow structure adapted to the wrench body (1), and the lower part of the wrench (2) is provided with a pin hole (7). The pin (6) passes through the pin hole (7) and the spring hole (5), and the outer periphery of the pin (6) abuts against one end of the spring hole (5); The handle (8) is rotatably connected to the wrench body (1) via a pin (10) and is also connected to the wrench mouth (2) via a transmission connection to drive the wrench mouth (2) to move along the slide (3).

2. A ratchet wrench with automatically adjustable opening amount according to claim 1, characterized in that, Both sides of the wrench (2) are provided with U-shaped grooves (9), and the two inner walls of the wrench (2) are provided with bosses (12) that cooperate with the sliding groove (3). When the wrench (2) is assembled with the wrench body (1), the two bosses (12) slide in the two grooves (3) respectively to limit the sliding trajectory of the wrench (2) on the wrench body (1).

3. A ratchet wrench with automatically adjustable opening amount according to claim 1, characterized in that, The groove (3) passes through the plate (1) horizontally, and the width of the groove (3) is greater than the width of the boss (12).

4. A ratchet wrench with automatically adjustable opening amount according to claim 1, characterized in that, The two grooves (3) of the spring hole (5) are connected, and the width of the spring hole (5) is greater than the diameter of the pin (6).

5. A ratchet wrench with automatically adjustable opening amount according to claim 1, characterized in that, One end of the spring (4) is fixedly connected to the end corresponding to the spring hole (5), and the other end is pressed into contact with the periphery of the pin (6).

6. A ratchet wrench with automatically adjustable opening amount according to claim 2, characterized in that, The front end of the handle (8) is provided with a fork that works with the U-shaped groove (9), and the front end of the handle (8) is provided with an assembly groove, and pin holes (11) are provided on both sides of the assembly groove. The lower part of the lever body (1) is inserted into the assembly groove, and is rotatably connected to the handle (8) through the pin (10) passing through the pin hole (11) and the through hole on the lever body (1); The handle (8) has a tail hole (13) near the tail end.

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