An adjustable wrench that allows for quick opening and closing by rotating a nut.

Abstract

This invention discloses an adjustable wrench that achieves rapid opening and closing through nut rotation, relating to the field of manual hardware tools. It includes a wrench body, a movable jaw, an adjusting nut, a stop block, a compression spring, a pin, and a detachment pin. The wrench body has a fixed jaw and a sliding groove. The movable jaw is slidably fitted into the sliding groove, and its root shaft at the bottom end has a follow-up adjusting tooth and a guide slope. The adjusting nut is rotatably mounted on the wrench body via a pin and has a guide notch adapted to the guide slope, as well as anti-slip patterns that mesh with the follow-up adjusting tooth. The compression spring and the stop block are assembled in the movable groove of the wrench body, forming a constantly engaged locking mechanism for the adjusting nut. The detachment pin cooperates with the limiting groove of the movable jaw to form a full-stroke anti-detachment protection. This invention achieves a wide range of opening range adjustment within seconds through nut rotation, while also enabling precise micro-adjustment, and combines the advantages of stable locking, anti-detachment safety, and a simplified structure.

Description

Technical Field

[0001] This invention relates to the field of manual hardware tools, and more specifically, to an adjustable wrench that achieves rapid opening and closing by rotating a nut. Background Technology

[0002] Adjustable wrenches are essential basic hand tools in industrial production, equipment maintenance, home decoration construction, and electromechanical operation and maintenance. Their core function is to adapt to fasteners such as hex bolts and nuts of different specifications by adjusting the opening distance between the movable jaw and the fixed jaw. They are characterized by strong versatility and wide applicability.

[0003] In the existing technology, traditional adjustable wrenches use a worm gear and rack transmission structure, which drives the rack to move linearly by rotating the worm to open and close the jaws. However, this adjustment method has low adjustment efficiency, and large-range adjustments require repeated rotation of the worm gear, which is cumbersome and time-consuming.

[0004] To address the shortcomings of traditional adjustable wrenches, the industry has developed several quick-adjusting adjustable wrenches. However, existing solutions still face insurmountable technical bottlenecks: First, they cannot simultaneously achieve rapid, wide-range adjustment and precise fine-tuning. Either rapid adjustment fails to achieve precise small-size adaptation, or the fine-tuning and rapid adjustment structures conflict, resulting in cumbersome operation. Second, locking reliability is insufficient. In non-operating states, the adjusting components are prone to self-rotation, leading to unexpected changes in the opening size. During high-torque operations, this can cause slippage and jaw breakage, posing safety hazards. Third, anti-disengagement protection is inadequate. During rapid adjustment, the movable jaws can easily detach from the slide groove, causing tool damage or even personal injury.

[0005] Therefore, developing an adjustable wrench with a simplified structure that can balance rapid opening and closing with precise fine-tuning, stable locking, and anti-dislodgement safety has become a long-standing technical problem that needs to be solved in this field. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to overcome the aforementioned defects of the prior art and provide an adjustable wrench that achieves rapid opening and closing through nut rotation. This adjustable wrench achieves a wide range of opening adjustment in seconds through nut rotation and inclined guide engagement, while ensuring locking stability through a constantly engaged blocking block mechanism, and providing full-stroke anti-disengagement protection through the engagement of an anti-disengagement pin and a limiting groove. It features high adjustment efficiency, a simplified structure, and low processing cost.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An adjustable wrench that enables rapid opening and closing by rotating a nut includes a wrench body, a movable wrench mouth, and an adjusting nut; The upper end of the wrench body is provided with a fixed jaw, and the upper end of the wrench body is provided with a sliding groove corresponding to the fixed jaw. The extension direction of the sliding groove is perpendicular to the clamping surface of the fixed jaw. The movable jaw is slidably assembled in the sliding groove and can slide linearly back and forth along the sliding groove. The bottom end of the movable jaw is provided with a root round shaft, and the bottom of the root round shaft is provided with a follow-up adjustment tooth. The follow-up adjustment tooth is used to cooperate with the adjustment nut to achieve precise fine adjustment of the opening amount. The adjustment nut is rotatably mounted on the wrench body. The adjusting nut is located directly below the root shaft. A through guide notch is provided on the side of the adjusting nut. Guide slopes that match the angle of the guide notch are machined on both sides of the bottom of the root shaft. The guide slopes and the guide notch form a separable sliding fit pair.

[0008] Furthermore, the present invention also includes an anti-detachment pin, which is fixedly installed on the wrench body and located at the end of the sliding channel away from the fixed jaws. The top end of the anti-detachment pin extends into the sliding channel. A limiting groove is formed on the side of the movable wrench, and the top end of the anti-detachment pin is inserted into the limiting groove and slidably connected thereto. When the movable wrench slides along the sliding channel to the maximum opening position, the top end of the anti-detachment pin and the end face of the limiting groove form a rigid mechanical limit, preventing the movable wrench from coming out of the sliding channel.

[0009] Furthermore, it also includes a stop block and a compression spring. A movable groove is provided on the plate body and located directly below the adjusting nut. The compression spring and the stop block are both assembled in the movable groove. The lower end of the compression spring abuts against the inner wall of the bottom of the movable groove, and the upper end of the compression spring abuts against the bottom of the stop block. The stop block can slide up and down along the movable groove, and the top of the stop block abuts against the surface of the adjusting nut.

[0010] Furthermore, the upper end of the block is provided with an engagement structure, and the outer circumferential surface of the adjusting nut is provided with anti-slip patterns. The engagement structure continuously engages with the anti-slip patterns under the elastic force of the compression spring, which is used to limit the rotation of the adjusting nut in the non-operating state.

[0011] Furthermore, the guide notch is a V-shaped notch with a 60° angle, the guide slope is a symmetrical slope with a 60° angle that matches the angle of the guide notch, and the root circular shaft forms a V-shaped boss structure that matches the V-shaped notch.

[0012] Furthermore, the block is an iron-based block integrally formed by powder metallurgy, possessing self-lubricating and wear-resistant properties.

[0013] Furthermore, the engagement structure at the upper end of the block is a pointed protrusion, the angle of which matches the angle of the tooth groove of the anti-slip pattern, and can be completely embedded in the tooth groove of the anti-slip pattern to form a stable engagement.

[0014] Furthermore, the anti-slip pattern is a knurled anti-slip tooth pattern, covering the area of ​​the outer circumference of the adjusting nut except for the guide notch.

[0015] Furthermore, the follow-up adjusting teeth are linearly arranged straight teeth with the tooth direction perpendicular to the extension direction of the sliding channel.

[0016] Furthermore, the anti-detachment pin is a cylindrical pin, which is fixedly installed on the lever body by interference fit; the extension direction of the limiting groove is consistent with the extension direction of the sliding channel, and the length of the limiting groove matches the maximum adjustment stroke of the movable lever.

[0017] Furthermore, the adjusting nut is rotatably mounted on the plate body via a pin. The plate body has a coaxial pin mounting hole. After the pin passes through the central through hole of the adjusting nut, both ends are fixedly assembled in the pin mounting hole, so that the adjusting nut can rotate freely around the axis of the pin.

[0018] Furthermore, the fixed jaws are integrally formed on the upper end of the wrench body, and the root round shaft is integrally formed on the bottom end of the movable jaws.

[0019] Furthermore, the movable groove is a rectangular groove, with the groove opening facing the outer circumferential surface of the adjusting nut.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention forms a separable mating pair by adjusting the guide notch of the nut and the guide slope of the circular shaft at the root of the movable wrench. When the nut is rotated so that the guide notch is aligned with the guide slope, the follower adjusting teeth disengage from the anti-slip pattern of the nut, allowing the movable wrench to slide freely along the sliding groove, achieving a wide range of adjustment of the opening size within seconds. When the size is adjusted to near the target size, the nut is rotated in the opposite direction to re-engage the anti-slip pattern with the follower adjusting teeth, thus achieving precise fine-tuning of the opening amount by rotating the nut. This solves the industry pain point that existing quick-adjustable wrenches cannot simultaneously achieve both rapid adjustment and precise fit, significantly shortening the switching and adjustment time for fasteners of different specifications.

[0021] 2. The present invention provides continuous elastic force through a compression spring. The meshing structure at the upper end of the push block and the anti-slip pattern of the adjusting nut are kept in constant meshing. In the non-operating state, the rotation of the adjusting nut can be completely restricted to avoid unexpected changes in the opening size.

[0022] 3. The present invention forms a sliding fit between the anti-detachment top pin and the limiting groove on the side of the movable wrench, thereby forming a continuous limit within the full adjustment stroke of the movable wrench. When the movable wrench slides to the maximum opening position, the anti-detachment top pin and the end face of the limiting groove form a rigid mechanical limit, completely preventing the movable wrench from coming out of the sliding channel.

[0023] 4. The core functional components of this invention are few in number and have no complex irregular structures. The main components can be formed by conventional machining processes. The block is integrally formed by powder metallurgy process, which has both self-lubricating and wear-resistant properties. No secondary processing is required, which greatly reduces the processing cost and assembly accuracy requirements.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is the left view of the present invention.

[0028] Figure 3 This is a schematic diagram of the mating structure between the movable jaw and the adjusting nut in this invention.

[0029] Figure 4 This is a front view of the adjusting nut in this invention.

[0030] Figure 5 This is a left view of the adjusting nut in this invention.

[0031] Figure 6 This is a front view of the movable lever in this invention.

[0032] In the diagram: 1. Wrench body; 2. Movable jaw; 3. Anti-detachment pin; 4. Adjusting nut; 5. Stop block; 6. Compression spring; 7. Movable groove; 8. Pin; 9. Root round shaft; 10. Sliding channel; 11. Guide slope; 12. Anti-slip pattern; 13. Guide notch; 14. Limiting groove; 15. Follow-up adjusting tooth; 16. Fixed jaw. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: This embodiment provides an adjustable wrench that achieves rapid opening and closing through nut rotation. The overall structure is as follows: Figure 1-2 As shown, it includes a lever body 1, a movable lever mouth 2, an anti-detachment pin 3, an adjusting nut 4, a stop block 5, a compression spring 6, and a pin shaft 8.

[0035] The wrench body 1 serves as the main support for the wrench. A fixed jaw 16 is integrally formed at the upper end of the wrench body 1. A sliding groove 10, corresponding to the fixed jaw 16, is formed at the upper end of the wrench body 1. The extending direction of the sliding groove 10 is perpendicular to the clamping surface of the fixed jaw 16, providing a linear sliding guide for the movable jaw 2. The movable jaw 2 is slidably fitted within the sliding groove 10 and can reciprocate linearly along the sliding groove 10, forming a variable clamping opening in conjunction with the fixed jaw 16.

[0036] like Figure 3 , Figure 6 As shown, the bottom end of the movable flange 2 is integrally formed with a root round shaft 9. The bottom of the root round shaft 9 is provided with follow-up adjustment teeth 15. The follow-up adjustment teeth 15 are linearly arranged straight teeth with the tooth direction perpendicular to the extension direction of the sliding groove 10. They are used to cooperate with the adjusting nut 4 to achieve precise fine adjustment of the opening amount. Guide slopes 11 are machined on both sides of the bottom of the root round shaft 9. In this embodiment, the guide slopes 11 are symmetrical slopes with a 60° angle, so that the bottom of the root round shaft 9 forms a V-shaped boss structure.

[0037] The adjusting nut 4 is rotatably mounted on the wrench body 1 via a pin 8, and is located directly below the root round shaft 9. The wrench body 1 has coaxial pin mounting holes. After the pin 8 passes through the central through hole of the adjusting nut 4, both ends are fixedly fitted into the pin mounting holes, allowing the adjusting nut 4 to rotate freely around the axis of the pin 8. Figure 4-5 As shown, the side of the adjusting nut 4 has a through guide notch 13. The guide notch 13 is a V-shaped notch with a 60° angle, which matches the angle of the guide slope 11. The guide slope 11 and the guide notch 13 form a separable sliding fit pair. The outer circumferential surface of the adjusting nut 4 is provided with anti-slip pattern 12. The anti-slip pattern 12 is a knurled anti-slip tooth pattern, which covers the area of ​​the outer circumferential surface of the adjusting nut 4 except for the guide notch 13.

[0038] A movable groove 7 is provided on the upper part of the lever body 1, directly below the adjusting nut 4. The movable groove 7 is a rectangular groove, with its opening facing the outer circumference of the adjusting nut 4. A compression spring 6 and a stop block 5 are both assembled within the movable groove 7. The lower end of the compression spring 6 abuts against the inner wall of the groove bottom of the movable groove 7, and the upper end of the compression spring 6 abuts against the bottom of the stop block 5. The stop block 5 can slide up and down along the movable groove 7. The upper end of the stop block 5 has an engagement structure. In this embodiment, the engagement structure is a pointed protrusion. The angle of the pointed protrusion matches the tooth groove angle of the anti-slip pattern 12, allowing it to be completely embedded in the tooth groove of the anti-slip pattern 12 to form a stable engagement. Under the elastic force of the compression spring 6, the engagement structure continuously engages with the anti-slip pattern 12, limiting the rotation of the adjusting nut 4 in its non-operating state. The friction generated by both prevents the nut from rotating arbitrarily. When adjustment is needed, the operator can rotate the adjusting nut 4 to overcome this friction and make fine adjustments.

[0039] In this embodiment, the block 5 is an iron-based block integrally formed by powder metallurgy, which has excellent self-lubricating and wear-resistant properties.

[0040] The anti-detachment pin 3 is fixedly installed on the lever body 1 and located at the end of the sliding channel 10 away from the fixed jaw 16. The anti-detachment pin 3 is a cylindrical pin, fixedly installed on the lever body 1 by interference fit, with its top end extending into the sliding channel 10. A limiting groove 14 is provided on the side of the movable jaw 2, and the top end of the anti-detachment pin 3 is inserted into the limiting groove 14 and slidably connected thereto. The extending direction of the limiting groove 14 is consistent with the extending direction of the sliding channel 10, and the length of the limiting groove 14 matches the maximum adjustment stroke of the movable jaw 2. When the movable jaw 2 slides along the sliding channel 10 to the maximum opening position, the top end of the anti-detachment pin 3 and the end face of the limiting groove 14 form a rigid mechanical limit, preventing the movable jaw 2 from dislodging from the sliding channel 10.

[0041] Example 2: The adjustable wrench provided in this embodiment, which achieves quick opening and closing by rotating a nut, works on the following principle: 1. When a large adjustment of the wrench opening size is required, rotating the adjusting nut 4 can overcome the friction between the resistance block 5 and the adjusting nut 4 for adjustment; the guide notch 13 on the adjusting nut 4 is aligned with the guide slope 11 of the circular shaft 9 at the root of the movable wrench 2, and the movable wrench 2 can be freely pushed and pulled along the sliding groove 10 to achieve a large range of adjustment of the opening size in seconds.

[0042] 2. When the movable wrench 2 is adjusted to near the target size, rotate the adjusting nut 4 to re-engage with the follower adjusting tooth 15, driving the movable wrench 2 to move linearly along the sliding groove 10, thereby achieving precise fine-tuning of the opening amount and adapting to the clamping size of the fastener. After the fine-tuning is completed, the constant engagement structure of the stop block 5 continuously locks the adjusting nut 4, ensuring that the opening size remains stable during operation.

[0043] 3. Within the full adjustment stroke of the movable lever 2, the top of the anti-detachment pin 3 is always engaged in the limiting groove 14 of the movable lever 2. When the movable lever 2 slides to the maximum opening position, the top of the anti-detachment pin 3 rigidly abuts against the end face of the limiting groove 14, forming a mechanical limit, completely preventing the movable lever 2 from coming out of the sliding channel 10, thus achieving full stroke anti-detachment protection.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An adjustable wrench that achieves rapid opening and closing by rotating a nut, characterized in that: Includes a lever body (1), a movable lever opening (2), and an adjusting nut (4); The upper end of the wrench body (1) is provided with a fixed jaw (16), and the upper end of the wrench body (1) is provided with a sliding groove (10) corresponding to the fixed jaw (16). The extension direction of the sliding groove (10) is perpendicular to the clamping surface of the fixed jaw (16). The movable jaw (2) is slidably assembled in the sliding groove (10). The bottom end of the movable jaw (2) is provided with a root round shaft (9), and the bottom of the root round shaft (9) is provided with a follow-up adjustment tooth (15). The follow-up adjustment tooth (15) is connected to the adjustment nut (4). The adjustment nut (4) is rotatably mounted on the wrench body (1). The adjusting nut (4) is located directly below the root shaft (9). The side of the adjusting nut (4) has a through guide notch (13). The bottom sides of the root shaft (9) are machined with guide slopes (11) that match the angle of the guide notch (13). The guide slopes (11) and the guide notch (13) form a separable sliding fit pair.

2. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 1, characterized in that: It also includes an anti-detachment pin (3), which is fixedly installed on the wrench body (1) and located at the end of the sliding channel (10) away from the fixed jaw (16). The top end of the anti-detachment pin (3) extends into the sliding channel (10). A limiting groove (14) is provided on the side of the movable jaw (2), and the top end of the anti-detachment pin (3) is inserted into the limiting groove (14) and slidably connected to it.

3. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 2, characterized in that: It also includes a stop block (5) and a compression spring (6). A movable groove (7) is provided on the plate body (1) and directly below the adjusting nut (4). The compression spring (6) and the stop block (5) are both assembled in the movable groove (7). The lower end of the compression spring (6) abuts against the inner wall of the bottom of the movable groove (7), and the upper end of the compression spring (6) abuts against the bottom of the stop block (5). The stop block (5) can slide up and down along the movable groove (7). The top of the stop block (5) is in contact with the surface of the adjusting nut (4).

4. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 3, characterized in that: The upper end of the block (5) is provided with a meshing structure, and the outer circumferential surface of the adjusting nut (4) is provided with anti-slip pattern (12). The meshing structure continuously meshes with the anti-slip pattern (12) under the elastic force of the compression spring (6) to limit the rotation of the adjusting nut (4) in the non-operation state.

5. The adjustable wrench that achieves rapid opening and closing by rotating a nut according to claim 1, characterized in that: The guide notch (13) is a V-shaped notch with a 60° angle, the guide slope (11) is a symmetrical slope with a 60° angle that matches the angle of the guide notch (13), and the root round shaft (9) forms a V-shaped boss structure that matches the V-shaped notch.

6. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 3, characterized in that: The block (5) is an iron-based block integrally formed by powder metallurgy.

7. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 4, characterized in that: The upper end of the blocking block (5) has a sharp protrusion. The angle of the sharp protrusion matches the tooth groove angle of the anti-slip pattern (12) and can be embedded in the tooth groove of the anti-slip pattern (12) to form a stable engagement.

8. The adjustable wrench that achieves rapid opening and closing by rotating the nut according to claim 3, characterized in that: The extension direction of the limiting groove (14) is consistent with the extension direction of the sliding channel (10), and the length of the limiting groove (14) matches the maximum adjustment stroke of the movable wrench (2); the movable groove (7) is a rectangular groove with the groove opening facing the outer circumference of the adjusting nut (4).

9. The adjustable wrench that achieves rapid opening and closing by rotating a nut according to claim 1, characterized in that: The adjusting nut (4) is rotatably mounted on the wrench body (1) via a pin (8). The wrench body (1) has a coaxial pin (8) mounting hole. After the pin (8) passes through the central through hole of the adjusting nut (4), both ends are fixedly assembled in the pin (8) mounting hole.

10. The adjustable wrench that achieves rapid opening and closing by rotating a nut according to claim 1, characterized in that: The fixed jaw (16) is integrally formed at the upper end of the wrench body (1), and the root round shaft (9) is integrally formed at the bottom end of the movable jaw (2).

Images