Adjustable forceps

Abstract

The utility model relates to the technical field of hardware, disclose a kind of adjustable forceps, including fixed forceps body, the inside sliding connection of fixed forceps body has sliding forceps body, the upper and lower sides of sliding forceps body are rotatably connected with ratchet pin, the outside fixed connection of ratchet pin has ratchet wheel, the upper and lower sides of sliding forceps body are detachably connected with elastic cylindrical pin, the inside of ratchet wheel is equipped with cavity, the left side inner wall of cavity is fixedly connected with small compression spring, the left side inner wall of fixed forceps body is fixedly connected with pawl, the rear side of fixed forceps body is detachably connected with limit component. In the utility model, it adopts arc groove tooth shape, compared with traditional straight groove tooth shape, greatly optimizes clamping experience, not only increases opening in use process, can adapt more extensive object size, and when meshing, sound impact is small, runs more smoothly, to greatly improve work efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of hardware technology, and in particular to an adjustable pair of pliers. Background Technology

[0002] Hardware typically refers to five metals: gold, silver, copper, iron, and tin, but now it also broadly refers to all kinds of metal products. In furniture assembly and repair, hardware encompasses a variety of metal parts used for connection and fixing. When assembling or repairing furniture, it is often necessary to clamp screws and nuts of different sizes. Adjustable pliers can quickly adjust the jaw size to fit various sizes of hardware parts, easily handling tasks such as tightening loose screws or disassembling damaged parts.

[0003] Adjustable pliers mainly consist of basic structures such as jaws, joints, handles, and adjusting screws and nuts. The jaws are used to grip objects and are made of high-strength steel; the joints connect the handles and jaws to ensure opening and closing; the handles are for gripping and are usually fitted with anti-slip rubber sleeves; the adjusting screws and nuts are responsible for adjusting the jaw spacing.

[0004] However, some adjustable pliers in the existing technology have a small clamping size range. When encountering some larger objects, it is difficult for the pliers to adjust to a sufficiently large opening, making it difficult to effectively clamp them and greatly limiting the application scenarios. The straight grooves provide a poor feel for the user when clamping and moving objects. Since the straight grooves are difficult to fit well with the surface of the object, slippage and jamming are likely to occur during the movement of the object. This not only reduces the smoothness of operation, but also easily damages the surface of the object, affecting the accuracy and efficiency of operation. Therefore, an adjustable pliers is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an adjustable pliers, which aims to improve the problem that some adjustable pliers in the prior art have a small clamping size range, making it difficult to clamp them effectively.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable pair of pliers includes a fixed pliers body, a sliding pliers body slidably connected inside the fixed pliers body, ratchet pins rotatably connected to both the upper and lower sides of the sliding pliers body, a ratchet fixedly connected to the outside of the ratchet pins, elastic cylindrical pins detachably connected to both the upper and lower sides of the sliding pliers body, a cavity formed inside the ratchet, a small compression spring fixedly connected to the left inner wall of the cavity, a locking tooth fixedly connected to the left inner wall of the fixed pliers body, a limit assembly detachably connected to the rear side of the fixed pliers body, two clamping assemblies fixedly connected to both the upper and lower sides of the fixed pliers body, and two other clamping assemblies fixedly connected to both the upper and lower sides of the sliding pliers body.

[0008] As a further description of the above technical solution:

[0009] The limiting component includes a fixed sleeve, the front side of which is detachably connected to the rear side of the fixed clamp body, a movable sleeve slidably connected to the outside of the fixed sleeve, a threaded cap threaded to the inner wall of the movable sleeve, a large compression spring sleeved on the outside of the threaded cap, and a screw threaded to the inside of the fixed sleeve.

[0010] As a further description of the above technical solution:

[0011] The clamping assembly includes a fixing block, a rotating semicircular plate is slidably connected to the inner wall of the fixing block, a T-shaped semicircular plate one is slidably connected to the left and right sides of the inner side of the rotating semicircular plate, a T-shaped semicircular plate two is slidably connected to the left and right sides of the inner side of the T-shaped semicircular plate one, and a plurality of convex blocks are fixedly connected to the adjacent side of the plurality of T-shaped semicircular plates two.

[0012] As a further description of the above technical solution:

[0013] The fixed block has an arc-shaped groove inside, and a T-shaped arc block is slidably connected to the inner wall of the arc-shaped groove. The adjacent sides of the multiple T-shaped arc blocks are fixedly connected to the distant sides of the multiple rotating semicircular plates.

[0014] As a further description of the above technical solution:

[0015] The outer surface of the screw cap is slidably connected to the inner wall of the fixing sleeve, and the outer thread of the screw is connected to the front side of the fixing clamp body.

[0016] As a further description of the above technical solution:

[0017] The front side of the large compression spring contacts the inner wall of the front side of the fixed sleeve, and the rear side of the large compression spring contacts the front side of the threaded cover.

[0018] As a further description of the above technical solution:

[0019] The rear right side of the ratchet contacts the outside of the elastic cylindrical pin, and the bottom of the ratchet is rotatably connected to the top of the sliding clamp body;

[0020] As a further description of the above technical solution:

[0021] The outer surface of the ratchet engages with the outer teeth of the locking teeth, one of the protective sleeves is fitted on the outer surface of the fixed clamp body, and the other protective sleeve is fitted on the outer surface of the sliding clamp body.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the ratchet is first activated, causing it to rotate around the ratchet pin. The ratchet then compresses a small spring. After moving the sliding clamp to the designated position, the ratchet is released. Under the force of the small spring, the ratchet rotates, causing it to contact the elastic cylindrical pin. The ratchet uses an arc-shaped tooth profile, which greatly optimizes the clamping experience compared to the traditional straight tooth profile. During use, the opening is larger, accommodating a wider range of object sizes, making the clamping size range far exceed that of similar tools. It can easily meet the needs of various scenarios such as water and electricity installation and industrial and mining enterprises. Moreover, the noise and impact are small during engagement, and the operation is more stable and smooth, thereby greatly improving work efficiency and quality.

[0024] 2. In this utility model, when an object comes into contact with the convex block, the large compression spring causes the threaded cover to move. After the threaded cover comes into contact with the sliding clamp body, the convex block causes the second T-shaped semicircular plate to rotate, which in turn causes the first T-shaped semicircular plate to rotate. Through the first T-shaped semicircular plate rotating the rotating semicircular plate, objects of different shapes can be fixed, thus preventing the object from rolling during the fixing process. For square or polygonal objects, the flat jaw module can provide a large area of ​​stable clamping surface to ensure a firm fixation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an adjustable pair of pliers proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the clamp body structure of an adjustable pliers proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0028] Figure 4 This is a schematic diagram of the sheath structure of an adjustable pliers according to the present invention;

[0029] Figure 5 This is a schematic diagram of the fixing sleeve structure of an adjustable pliers according to the present invention;

[0030] Figure 6 This is a schematic diagram of the fixing block structure of an adjustable pliers proposed in this utility model.

[0031] Legend:

[0032] 1. Fixed clamp body; 2. Sliding clamp body; 3. Ratchet; 4. Elastic cylindrical pin; 5. Ratchet pin; 6. Cavity; 7. Small compression spring; 8. Clamping tooth; 9. Threaded cap; 10. Large compression spring; 11. Movable sleeve; 12. Fixed sleeve; 13. Screw; 14. Fixing block; 15. Rotating semicircular plate; 16. T-shaped semicircular plate one; 17. T-shaped semicircular plate two; 18. Convex block; 19. Arc groove; 20. T-shaped arc block; 21. Protective sleeve. Detailed Implementation

[0033] 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.

[0034] Example 1

[0035] Reference Figures 1 to 3 The fixed clamp body 1 is internally connected to a sliding clamp body 2. The sliding clamp body 2 achieves smooth sliding connection through the slide rail, ensuring stable and precise movement when adjusting the jaw spacing. Ratchet pins 5 are installed on the upper and lower sides of the sliding clamp body 2, respectively. The ratchet pins 5 are made of high-strength alloy steel and penetrate both side walls of the sliding clamp body 2, firmly connecting to a ratchet 3 externally, allowing the ratchet 3 to rotate flexibly around the ratchet pins 5. The upper and lower sides of the sliding clamp body 2 are also equipped with detachable elastic cylindrical pins 4, which are detachably connected to the sliding clamp body 2 through slots, facilitating later maintenance or parts replacement. The ratchet 3 has an internal cavity 6, which is a regular cylindrical shape. A small compression spring 7 is fixedly connected to its left inner wall using a welding process. The small compression spring 7 has stable and durable elasticity. The left inner wall of the fixed clamp body 1 is fixedly connected with a locking tooth 8 by welding or high-strength bolts. The outer teeth of the locking tooth 8 precisely match the outer teeth of the ratchet 3, enabling a tight engagement. The rear right side of the ratchet 3 contacts the outer side of the elastic cylindrical pin 4. When the ratchet 3 rotates, this contact relationship serves to limit and control the rotation angle of the ratchet 3. The bottom of the ratchet 3 is rotatably connected to the top of the sliding clamp body 2 through a precision bearing, ensuring smooth and stable rotation. To improve the user's grip comfort and operational safety, the fixed clamp body 1 is covered with a protective sleeve 21. The protective sleeve 21 is made of soft and non-slip rubber material with a unique textured surface to increase friction. The sliding clamp body 2 is also covered with another protective sleeve 21. Together, they provide the user with a good grip experience.

[0036] Example 2

[0037] Reference Figures 1 to 3 The rear side of the fixed clamp body 1 is detachably connected to a limiting component, which includes a fixed sleeve 12. This limiting component is crucial for precisely controlling the movement range of the sliding clamp body 2, ensuring operational stability and safety. The fixed sleeve 12 in the limiting component is detachably connected to the rear side of the fixed clamp body 1 via a specially designed connecting buckle, facilitating disassembly and installation during maintenance or adjustment. The fixed sleeve 12 has a hollow cylindrical structure, with a movable sleeve 11 fitted around it. The movable sleeve 11 is slidably connected to the fixed sleeve 12 via a precision annular slide rail, ensuring that the movable sleeve 11 can slide smoothly along the axial direction of the fixed sleeve 12. The inner wall of the movable sleeve 11 and the outer wall of the threaded cover 9 are threaded together. By rotating the threaded cover 9, its position within the movable sleeve 11 can be precisely adjusted. A large compression spring 10 is fitted around the outside of the threaded cover 9, providing stable and significant elasticity. When force is applied, a screw 13 is installed inside the fixed sleeve 12 via a threaded connection. The threads of the screw 13 are precision machined to ensure a tight fit with the threads inside the fixed sleeve 12. Its function is to firmly fix the fixed sleeve 12 onto the fixed clamp body 1. The outer side of the screw cap 9 is also slidably connected to the inner wall of the fixed sleeve 12 via a smooth inner wall. During sliding, the screw cap 9 can move smoothly along the inner wall of the fixed sleeve 12 without obstruction. The outer thread of the screw 13 is connected to the front side of the fixed clamp body 1. By tightening or loosening the screw 13, the tightness of the connection between the fixed sleeve 12 and the fixed clamp body 1 can be adjusted. The front side of the large compression spring 10 is in close contact with the front inner wall of the fixed sleeve 12, and the rear side is in contact with the front side of the screw cap 9. When the movable sleeve 11 is subjected to external force, the large compression spring 10 can apply corresponding pressure to the screw cap 9 through its own elastic deformation, thereby achieving the limit control of the sliding clamp body 2.

[0038] Example 3

[0039] Reference Figures 1 to 3Two clamping components are fixedly connected to the upper and lower sides of the fixed clamp body 1, and two other clamping components are fixedly connected to the upper and lower sides of the sliding clamp body 2. The clamping components include a fixing block 14. The rotating semicircular plate 15 is smoothly slidably connected in the dovetail groove through a matching slider, ensuring that the rotating semicircular plate 15 can rotate and move flexibly. On the left and right sides of the interior of the rotating semicircular plate 15, two parallel slide rails are respectively provided. The T-shaped semicircular plate 16 is slidably connected to the slide rails through rollers installed on its two sides, so that the T-shaped semicircular plate 16 can slide smoothly along the internal track of the rotating semicircular plate 15. Similar slide rails are provided on the left and right sides of the interior of the T-shaped semicircular plate 16. The T-shaped semicircular plate 17 slides within the slide rails of the T-shaped semicircular plate 16 via its own rollers. Multiple convex blocks 18 are fixedly connected to the adjacent sides of the multiple T-shaped semicircular plates 17 by welding. The convex blocks 18 can effectively enhance the clamping force on the object. The fixed block 14 has an arc groove 19 inside. The T-shaped arc block 20 slides within the arc groove 19 through the sliding protrusion at the bottom. The adjacent sides of the multiple T-shaped arc blocks 20 are fixedly connected to the distant sides of the multiple rotating semicircular plates 15 by bolts or welding. This connection method ensures that the rotating semicircular plate 15 can achieve stable and precise angle adjustment during rotation by sliding the T-shaped arc blocks 20 within the arc groove 19, thereby better adapting to the fixing needs of objects of different shapes.

[0040] Working Principle: When adjusting the jaw spacing to accommodate objects of different sizes, first activate ratchet 3. Ratchet 3 rotates around ratchet pin 5, compressing the small spring 7 inside cavity 6. Next, slide the sliding jaw 2 along the track inside the fixed jaw 1 to the designated position. After position adjustment, release ratchet 3. Under the restoring force of the small spring 7, ratchet 3 rotates in the opposite direction until it contacts the elastic cylindrical pin 4. During this process, because ratchet 3 uses an arc-shaped tooth profile, compared to traditional straight tooth profiles, it greatly optimizes the user experience during subsequent engagement. This tooth design allows for a larger opening when adjusting the jaw spacing, accommodating a wider range of object sizes, making the clamping size range far exceed that of similar tools. Furthermore, when ratchet 3 engages with the locking teeth 8, the noise and impact are minimal, and the operation is smoother and more stable.

[0041] When an object needs to be fixed, it contacts the protruding block 18 in the clamping assembly. Simultaneously, under the action of the limiting assembly, the large compression spring 10 pushes the threaded cap 9 forward along the inner wall of the fixing sleeve 12. When the threaded cap 9 contacts the sliding clamp body 2, the protruding block 18 drives the T-shaped semicircular plate 17 to rotate. The rotation of the T-shaped semicircular plate 17 then drives the T-shaped semicircular plate 16 to rotate. The T-shaped semicircular plate 16, in turn, drives the rotating semicircular plate 15 to rotate around the T-shaped arc block 20 within the fixing block 14 in the arc groove 19, thus achieving the fixing of objects of different shapes. For example, for a circular object, the coordinated action of the rotating semicircular plate 15 and the T-shaped semicircular plate allows the protruding block 18 to tightly adhere to the object's surface, preventing the object from rolling during the fixing process. For square or polygonal objects, the near-flat structure composed of multiple protruding blocks 18 and rotating semicircular plates 15 provides a large area of ​​stable clamping surface, ensuring a secure fixation.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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. An adjustable pair of pliers, comprising a fixed pliers body (1), characterized in that: The fixed clamp body (1) is internally slidably connected to a sliding clamp body (2). Both the upper and lower sides of the sliding clamp body (2) are rotatably connected to ratchet pins (5). The ratchet pins (5) are externally fixedly connected to a ratchet (3). Both the upper and lower sides of the sliding clamp body (2) are detachably connected to elastic cylindrical pins (4). The ratchet (3) has a cavity (6) inside. The left inner wall of the cavity (6) is fixedly connected to a small compression spring (7). The left inner wall of the fixed clamp body (1) is fixedly connected to a locking tooth (8). The rear side of the fixed clamp body (1) is detachably connected to a limit assembly. Both the upper and lower sides of the fixed clamp body (1) are fixedly connected to two clamping assemblies. Both the upper and lower sides of the sliding clamp body (2) are fixedly connected to two other clamping assemblies.

2. The adjustable pliers according to claim 1, characterized in that: The limiting component includes a fixed sleeve (12), the front side of the fixed sleeve (12) is detachably connected to the rear side of the fixed clamp body (1), the fixed sleeve (12) is slidably connected to a movable sleeve (11), the inner wall of the movable sleeve (11) is threadedly connected to a threaded cap (9), the outer side of the threaded cap (9) is fitted with a large compression spring (10), and the fixed sleeve (12) is threadedly connected to a screw (13).

3. The adjustable pliers according to claim 1, characterized in that: The clamping assembly includes a fixing block (14), a rotating semicircular plate (15) is slidably connected to the inner wall of the fixing block (14), a T-shaped semicircular plate (16) is slidably connected to the left and right sides of the interior of the rotating semicircular plate (15), a T-shaped semicircular plate (17) is slidably connected to the left and right sides of the interior of the T-shaped semicircular plate (16), and a plurality of convex blocks (18) are fixedly connected to the adjacent side of the plurality of T-shaped semicircular plates (17).

4. An adjustable pair of pliers according to claim 3, characterized in that: The fixed block (14) has an arc groove (19) inside, and a T-shaped arc block (20) is slidably connected to the inner wall of the arc groove (19). The adjacent sides of the multiple T-shaped arc blocks (20) are fixedly connected to the distant sides of the multiple rotating semicircular plates (15).

5. An adjustable pair of pliers according to claim 2, characterized in that: The outer side of the screw cap (9) is slidably connected to the inner wall of the fixing sleeve (12), and the outer side of the screw (13) is threadedly connected to the front side of the fixing clamp body (1).

6. An adjustable pair of pliers according to claim 2, characterized in that: The front side of the large compression spring (10) is in contact with the inner wall of the front side of the fixed sleeve (12), and the rear side of the large compression spring (10) is in contact with the front side of the wire cover (9).

7. An adjustable pair of pliers according to claim 1, characterized in that: The rear right side of the ratchet (3) is in contact with the outside of the elastic cylindrical pin (4), and the bottom of the ratchet (3) is rotatably connected to the top of the sliding clamp body (2).

8. An adjustable pair of pliers according to claim 1, characterized in that: The outer side of the ratchet (3) engages with the outer teeth of the locking teeth (8). One of the protective sleeves (21) is fitted on the outer side of the fixed clamp body (1), and the other protective sleeve (21) is fitted on the outer side of the sliding clamp body (2).

Images