A new type of adjustable wrench

Abstract

The utility model discloses a novel movable spanner, this spanner includes fixed portion, assembly part and movable element, and the fixed portion and assembly part form the avoidance slot and are equipped with the fixed chuck on its upper end, and are equipped with fixed rack and guide sliding slot at the lower extreme, the movable element is located in the avoidance slot, and includes movable chuck, inner sliding block, the block and the movable rack that engages with fixed rack. Inner sliding block is pre -tensioned through elastic part, and the stable engagement of rack is ensured, and the exposed of the block is convenient for one -handed operation, realizes the quick regulation opening size, the engagement surface of fixed rack and movable rack adopts the asymmetric tooth shape design, and the slope angle of the opening direction of the restriction spanner is bigger to enhance the anti -torque ability, avoids the skidding. Elastic part evenly distributes and is equipped with the arc slide head at the end, and the friction loss is reduced, in addition, the modular design of key component is convenient for maintaining. The utility model solves the problem of low traditional spanner adjustment efficiency, and the clamping stability is poor, is applicable to the narrow space operation, has efficient, stable, durable etc.

Description

Technical Field

[0001] This utility model relates to the field of hardware tools technology, and in particular to a novel adjustable wrench. Background Technology

[0002] Adjustable wrenches, as a common hardware tool, are widely used in mechanical assembly, equipment maintenance, and pipeline installation, primarily for tightening or loosening bolts, nuts, and other fasteners of different sizes. Traditional adjustable wrenches typically employ a worm gear adjustment mechanism, where rotating the worm gear moves the movable jaws to adjust the opening size. However, the worm gear adjustment method is inefficient, requiring multiple rotations to complete the adjustment, which is extremely inconvenient in emergency repairs or operations in confined spaces.

[0003] Therefore, given the shortcomings of existing technologies, it is necessary to design a new type of adjustable wrench to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the present invention aims to disclose a new type of adjustable wrench, which solves the problems of slippage, inconvenient adjustment, and poor clamping stability of existing wrenches by means of rack and pinion engagement, elastic pre-tightening structure and optimized anti-slip design.

[0006] This utility model discloses a novel adjustable wrench, comprising:

[0007] The fixing part has a first fixing side clamp at its upper end and an inner sliding groove extending along the opening and closing direction of the wrench on its inner side.

[0008] The assembly part, together with the fixing part, forms a clearance groove. The upper end of the assembly part is provided with a second fixing side clamp, which is connected with the first fixing side clamp to form a fixing clamp. The lower end of the assembly part is provided with a fixing rack and a guide groove extending along the opening and closing direction of the wrench. The guide groove passes through the assembly part along the side.

[0009] The movable component, located within the clearance groove, includes a movable chuck extending from the outside of the clearance groove at its upper end, which forms a variable opening with the fixed chuck. The lower end of the movable component is provided with an inner slider that slides in cooperation with the inner slide groove, a toggle block that passes through and slides through the guide slide groove, and a movable rack that meshes with the fixed rack. At least two elastic elements are provided on the sides of the inner slider corresponding to the bottom of the inner slide groove, which are used to push the movable rack to mesh with the fixed rack.

[0010] Working principle: The movable rack is engaged with the fixed rack by the elastic element; the movable rack and the fixed rack are quickly separated by pressing the actuating block; the movable rack can be moved along the guide groove by directly moving the actuating block, so as to complete the adjustment of the wrench opening in a single action.

[0011] Preferred technical solution: The elastic elements are evenly arranged on the inner slider, and the end of the elastic element near the inner slide groove is provided with an arc-shaped slide head to reduce friction with the inner slide groove.

[0012] Preferred technical solution: The meshing surfaces of the fixed rack and the movable rack are asymmetrical toothed, and the slope angle α of the meshing surface that limits the opening of the wrench is greater than the slope angle β of the meshing surface that limits the closing of the wrench, so as to avoid the fixed rack and the movable rack separating due to excessive internal force acting on the meshing surface when the wrench is clamped.

[0013] Preferred technical solution: The fixed rack is detachably connected to the inside of the assembly part, which facilitates the replacement of worn parts.

[0014] Preferred technical solution: The movable rack is formed on the inner slider to improve connection stability.

[0015] Preferred technical solution: The actuating block and the movable clamp are integrally molded to ensure connection strength.

[0016] Preferred technical solution: The exposed end of the toggle block is provided with anti-slip texture or rubber coating to reduce the difficulty of moving the toggle block.

[0017] Preferred technical solution: The side of the inner slider is provided with a mounting groove; the elastic element is a compression spring, and its two ends are respectively connected to the bottom of the mounting groove and the rear end of the arc-shaped slider to ensure the installation stability of the elastic element.

[0018] Preferred technical solution: The mating surfaces of the first fixed-side clamp and the second fixed-side clamp are provided with a snap-fit ​​structure to improve the connection stability of the fixed clamps.

[0019] Preferred technical solution: The clamping surfaces of the fixed chuck and the movable chuck are provided with staggered anti-slip grooves to enhance the clamping force.

[0020] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0021] 1) High-efficiency adjustment mechanism: The rack and pinion meshing replaces the traditional worm gear structure. The movable rack and fixed rack are quickly engaged / disengaged by the actuating block, and the opening adjustment is completed in a single action, which improves the adjustment speed. The elastic preload design (compression spring + arc-shaped slide head) ensures stable meshing of the rack and pinion while reducing friction loss.

[0022] 2) High clamping stability: The asymmetrical tooth profile design (α>β) allows the meshing surface in the closed direction to withstand greater torque, avoiding the normal disengagement of the moving rack and the fixed rack due to excessive torque.

[0023] 3) Modular design facilitates maintenance: Key wear parts (rack, elastic components) adopt independent modular design, reducing maintenance costs.

[0024] 4) Good adaptability to working conditions: Significantly improves operating efficiency in confined spaces. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a novel adjustable wrench according to the present invention;

[0027] Figure 2 This is a schematic diagram of the fixing part in this utility model;

[0028] Figure 3 This is a schematic diagram of the assembly part in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the movable component in this utility model;

[0030] Figure 5 This is an exploded view of the inner slider in this utility model;

[0031] Figure 6 This is a schematic diagram of the meshing between the fixed rack and the movable rack in this utility model.

[0032] Figure 7 This is a schematic diagram of the structure of the novel adjustable wrench with anti-slip texture in this utility model.

[0033] In the above figures, 1 is the fixing part; 11 is the first fixing side chuck; 12 is the inner slide groove; 2 is the assembly part; 21 is the second fixing side chuck; 22 is the guide slide groove; 23 is the fixing rack; 3 is the moving part; 31 is the moving chuck; 32 is the inner slider; 32a is the mounting groove; 33 is the actuating block; 34 is the moving rack; 35 is the elastic element; and 36 is the arc-shaped slide head. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0038] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1: Basic Structure and Operating Principle

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model discloses a novel adjustable wrench, including a fixed part 1, an assembly part 2, and a movable part 3. The main components of this utility model will be described in detail below:

[0042] The upper end of the fixing part 1 is provided with a first fixing side clamp 11, and the inner side is provided with an inner sliding groove 12 extending along the opening and closing direction of the wrench.

[0043] The assembly part 2 and the fixing part 1 together form a clearance groove. The upper end of the assembly part 2 is provided with a second fixing side clamp 21, which is connected with the first fixing side clamp 11 to form a fixing clamp. The lower end of the assembly part 2 is provided with a fixing rack 23 and a guide groove 22, which runs through the assembly part 2 along its side.

[0044] The movable component 3 is located within the clearance groove, with its upper end extending outside the clearance groove to form a movable chuck 31. The movable chuck 31 and the fixed chuck form a variable opening. The lower end of the movable component 3 is provided with an inner slider 32, a toggle block 33, and a movable rack 34. The inner slider 32 is slidably engaged with the inner slide groove 12, the toggle block 33 passes through the guide slide groove 22 and is slidably connected to it, and the movable rack 34 is engaged with the fixed rack 23. The side of the inner slider 32 is provided with two elastic elements 35, and the front end of the elastic element 35 is provided with an arc-shaped slider 36, which is used to push the movable rack 34 to stably engage with the fixed rack 23.

[0045] Operating instructions:

[0046] Adjusting the opening size: Press the actuating block 33 to separate the movable rack 34 from the fixed rack 23, then slide the actuating block 33 along the guide groove 22 to move the movable chuck 31 to the desired position. Release the actuating block 33, and the elastic element 35 will push the movable rack 34 to re-engage with the fixed rack 23, completing the adjustment.

[0047] Clamping fasteners: Place the bolt or nut between the fixed chuck and the movable chuck 31, close the wrench, and the movable rack 34 and the fixed rack 23 engage and connect. Under the elastic force of the elastic element 35, the meshing surface is ensured to bear greater torque during clamping, preventing slippage.

[0048] Example 2: Optimized Design of Elastic Components

[0049] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the elastic elements 35 are evenly arranged on the inner slider 32, and their front ends are provided with arc-shaped sliders 36. The inner slider 32 is provided with a mounting groove 32a. The elastic elements 35 are compression springs, and their two ends are respectively connected to the bottom of the mounting groove 32a and the rear end of the arc-shaped slider 36. The arc-shaped slider 36 contacts the inner sliding groove 12, reducing the sliding friction between it and the inner sliding groove 12 when pushing the movable part 3, reducing the movement resistance and extending the service life.

[0050] Effect: The elastic preload is evenly distributed, ensuring that the movable rack 34 and the fixed rack 23 are tightly engaged, while reducing the operating force during adjustment.

[0051] Example 3: Asymmetrical tooth profile design

[0052] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the meshing surfaces of the fixed rack 23 and the movable rack 34 have asymmetrical tooth profiles. The slope angle α of the meshing surface that limits the opening of the wrench is greater than the slope angle β of the meshing surface that limits the closing of the wrench; when the wrench is subjected to torque, the meshing surface in the closing direction can withstand a greater force, preventing the movable rack 34 from separating from the fixed rack 23.

[0053] Effect: Significantly improves clamping stability and is suitable for high torque conditions.

[0054] Example 4: Modular Maintenance Design

[0055] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the fixed rack 23 is detachably connected to the inside of the assembly part 2 by screws. The movable rack 34 is integrally formed with the inner slider 32, and the exposed end of the actuating block 33 is provided with anti-slip texture.

[0056] Effect: The worn retaining rack 23 can be replaced by removing the screws. The non-slip design of the toggle block 33 facilitates operation, especially in wet or oily environments.

[0057] Example 5: Snap-fit ​​structure enhances stability

[0058] like Figure 2 and Figure 3 As shown, the mating surfaces of the first fixed-side clamp 11 and the second fixed-side clamp 21 are provided with a snap-fit ​​structure consisting of protrusions and grooves.

[0059] Effect: Prevents the clamp from shifting under stress, thus improving the overall structural strength.

[0060] Example 6: Optimization of Anti-slip Clamping Surface

[0061] like Figure 2 , Figure 3 and Figure 4 As shown, the clamping surfaces of the fixed chuck and the movable chuck 31 are provided with staggered anti-slip grooves, with a groove depth of 0.5 mm and a spacing of 2 mm.

[0062] Effect: Increases the friction of the clamping surface, preventing bolts or nuts from slipping, especially suitable for rusted or rounded corner fasteners.

[0063] This utility model achieves efficient adjustment, stable clamping, and convenient maintenance of an adjustable wrench through designs such as rack and pinion engagement, elastic pre-tightening, and asymmetrical tooth profile. Examples one through six detail the technical solution and advantages of this utility model from structural, operational, and maintenance perspectives.

[0064] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel adjustable wrench, characterized in that, include: The fixing part (1) has a first fixing side clamp (11) at its upper end, and the inner side of the fixing part (1) has an inner sliding groove (12) extending along the opening and closing direction of the wrench. The assembly part (2) and the fixing part (1) together form a clearance groove. The upper end of the assembly part (2) is provided with a second fixing side clamp (21). The second fixing side clamp (21) is connected with the first fixing side clamp (11) to form a fixing clamp. The lower end of the assembly part (2) is provided with a fixing rack (23) extending along the opening and closing direction of the wrench and a guide groove (22). The guide groove (22) passes through the assembly part (2) along the side. The movable component (3) is located in the clearance groove and includes a movable chuck (31) extending to the outside of the clearance groove at its upper end. The movable chuck (31) and the fixed chuck form a variable opening. The lower end of the movable component (3) is provided with an inner slider (32) that slides with the inner slide groove (12), a toggle block (33) that passes through the guide slide groove (22) and slides with it, and a movable rack (34) that meshes with the fixed rack (23). At least two elastic elements (35) are provided on the side of the inner slider (32) corresponding to the bottom of the inner slide groove (12).

2. The novel adjustable wrench according to claim 1, characterized in that: The elastic element (35) is evenly arranged on the inner slider (31), and an arc-shaped slider (36) is provided at one end of the elastic element (35) near the inner slide groove (12).

3. The novel adjustable wrench according to claim 1, characterized in that: The meshing surfaces of the fixed rack (23) and the movable rack (34) are asymmetrical, and the slope angle α of the meshing surface that restricts the wrench from opening is greater than the slope angle β of the meshing surface that restricts the wrench from closing.

4. A novel adjustable wrench according to claim 1, characterized in that: The fixed rack (23) is detachably connected to the inside of the assembly part (2).

5. A novel adjustable wrench according to claim 1, characterized in that: The movable rack (34) is formed on the inner slider (32).

6. A novel adjustable wrench according to claim 1, characterized in that: The actuating block (33) and the movable clamp (3) are integrally formed.

7. A novel adjustable wrench according to claim 1, characterized in that: The exposed end of the actuating block (33) is provided with anti-slip texture or rubber coating.

8. A novel adjustable wrench according to claim 1, characterized in that: The inner slider (32) has a mounting groove (32a) on its side; the elastic element (35) is a compression spring, and its two ends are respectively connected to the bottom of the mounting groove (32a) and the rear end of the arc-shaped slider (36).

9. A novel adjustable wrench according to claim 1, characterized in that: The mating surfaces of the first fixed-side clamp (11) and the second fixed-side clamp (21) are provided with a snap-fit ​​structure.

10. A novel adjustable wrench according to claim 1, characterized in that: The clamping surfaces of the fixed clamp and the movable clamp (31) are provided with staggered anti-slip grooves.

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