Labor-saving pliers
By designing the sliding structure of the guide holes and columns in the labor-saving pliers, ensuring that the columns and end faces are separated in the limit position, the stuck problem is solved, improving the user experience and ensuring the normal operation and safety of the equipment.
Patent Information
- Application Number
- CN202323599977.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing labor-saving clamps are easily stuck due to foreign objects or dust at the limit position, which affects the user experience.
A labor-saving pliers including a first handle and a second handle, a first clamp head and a second clamp head are designed. Through the sliding structure of the guide hole and the column, the column is ensured to be spaced from the end face in the limit position, avoiding jamming, and Adjust the jaw size in the expanded and folded states to facilitate cleaning of dust or foreign objects.
It effectively prevents the column from being stuck at the limit position, improves the user experience, and ensures the normal operation and safety of the labor-saving clamp by adjusting the jaw size and the design of the guide hole.
Smart Images
Figure CN222200197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric tools, in particular to a pair of labor-saving pliers. Background Art
[0002] Pliers are commonly used tools in life, usually composed of two handles and a pliers head, and the handles and pliers head are usually formed in one piece. In many cases, pliers need to be used for shearing work, and a certain degree of labor saving can be achieved through a lever structure. In order to further save effort, labor-saving pliers have appeared on the market. For example, a labor-saving pliers disclosed in Chinese invention patent CN101637889B realizes a double lever structure by sliding a sliding column in a slide groove, thereby achieving labor saving. Of course, when the sliding column is at the extreme position, there is a risk of jamming due to the entry of foreign matter or dust. Utility Model Content
[0003] The present application provides a labor-saving pliers, comprising a first pliers head, a second pliers head, a first handle and a second handle, wherein the first handle is rotatably connected to the second handle, the first pliers head is rotatably connected to the second pliers head, the first pliers head comprises a guide hole, the first handle comprises a column slidably arranged in the guide hole, an adjustable jaw is formed between the first pliers head and the second pliers head, the labor-saving pliers have a folded state and an unfolded state, the guide hole has a first end face away from the jaws and a second end face close to the jaws; in the unfolded state, the opening of the jaws is the largest; in the folded state, the opening of the jaws is the smallest, the column is adjacent to the first end face and the spacing is 0.3mm to 1.2mm.
[0004] Furthermore, in the expanded state, the column is adjacent to the second end surface and the spacing is 0.2 mm to 0.5 mm.
[0005] Furthermore, in the unfolded state, the guide hole and the first clamp head are partially offset to form an outlet.
[0006] Furthermore, in the folded state, the guide hole overlaps with the first clamp head.
[0007] Furthermore, the first handle includes a gripping portion and a connecting portion, the connecting portion is rotatably connected to the first pliers head, and the connecting portion is integrally formed with the column.
[0008] Furthermore, the first end surface and the second end surface are both curved surfaces and are convex in a direction away from the column.
[0009] Furthermore, the guide hole is waist-shaped.
[0010] Furthermore, when the force-saving pliers are in a folded state, the length direction of the guide hole is parallel to the jaws of the force-saving pliers.
[0011] When the force-saving pliers of the present application are in the extreme position, the column is spaced apart from the first end face, preventing the column from being tightly attached to the first end face and causing the column to be stuck at the end of the guide hole, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a front view of the labor-saving pliers according to one embodiment of the present application, wherein the labor-saving pliers are in a folded state.
[0013] Figure 2 for Figure 1 A front view of the force-saving pliers is shown, wherein the force-saving pliers are in an unfolded state.
[0014] Figure 3 for Figure 1 An exploded view of the force-saving pliers is shown at an angle.
[0015] Figure 4 for Figure 1 Another exploded view of the force-saving pliers shown. DETAILED DESCRIPTION
[0016] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.
[0017] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0018] The present application provides a labor-saving pliers, which has the advantage of being more labor-saving than traditional pliers, especially when performing shearing work. The labor-saving pliers include a first handle 1, a second handle 2, a first pliers head 3 and a second pliers head 4, wherein the first handle 1 is rotatably connected to the second handle 2, and the first pliers head 3 is rotatably connected to the second pliers head 4. The first pliers head 3 includes a guide hole 31, and the first handle 1 also includes a column 11 slidably disposed in the guide hole. The column 11 slides in the guide hole 31 to realize double-lever transmission, thereby achieving a greater degree of labor saving. The first handle 1 includes a gripping portion 12 and a connecting portion 13, wherein the connecting portion 13 is rotatably connected to the first pliers head 3, and the connecting portion 13 is integrally formed with the column 11 to simplify the manufacturing process.
[0019] Optionally, the first handle 1 is rotatably connected to the second handle 2 via a first pin 51, and the first pliers 3 is rotatably connected to the second pliers 4 via a second pin 52. In this embodiment, the second handle 2 and the second pliers 4 are integrally formed.
[0020] An adjustable jaw is formed between the first pliers head 3 and the second pliers head 4. The labor-saving pliers have a folded state and an unfolded state. The jaw is the largest in the unfolded state and the smallest in the folded state (approaching a line). The guide hole 31 has a first end face 311 away from the jaw and a second end face 312 adjacent to the jaw.
[0021] When the force-saving pliers are in a folded state, the column 11 is adjacent to the first end face 311 and there is a distance between the column 11 and the first end face 311, so as to prevent the column 11 from forming a dead point at the first end face 311 and getting stuck. Optionally, the distance is not less than 0.3 mm and not more than 1.2 mm. While avoiding getting stuck, it also prevents the gap from being too large to easily pinch hands and cause safety problems. It also prevents large particles of foreign matter from falling in and being difficult to clean, which may affect the normal operation of the force-saving pliers.
[0022] After the labor-saving pliers have been used for a period of time, some dust or foreign matter is easily deposited on the first end surface 311. When the labor-saving pliers are in the unfolded state, the guide hole 31 is partially offset from the first pliers head 1 to form an outlet 40. When cleaning, dust or foreign matter can easily escape through the outlet. In the folded state, the guide hole 31 overlaps with the first pliers head 1.
[0023] When the force-saving pliers are in the unfolded state, the column 11 is adjacent to the second end face 312 and there is a distance between the column 11 and the second end face 312, so as to prevent the column 11 from forming a dead point and getting stuck at the second end face 312. Optionally, the distance is not less than 0.2 mm and not more than 0.5 mm.
[0024] Optionally, the first end face 311 and the second end face 312 are both curved surfaces and are convex in the direction away from the column. In this embodiment, the column 11 is generally cylindrical to match the shapes of the first end face 311 and the second end face 312. Preferably, the guide hole is waist-shaped to allow the column 11 to move smoothly therein.
[0025] When the labor-saving pliers are in a folded state, the length direction of the guide hole 31 is parallel to the jaws of the labor-saving pliers. Of course, the extension direction of the guide hole can also be a curve, and the stroke of the corresponding pin is also limited.
[0026] When the force-saving pliers of the present application are in the extreme position, the column is spaced apart from the first end face, preventing the column from being tightly attached to the first end face and causing the column to be stuck at the end of the guide hole, thereby improving the user experience.
[0027] In view of this specification, further modifications and alternative embodiments of various aspects of the present invention will be obvious to those skilled in the art. Therefore, this description should be interpreted as being illustrative only. The configurations and arrangements shown in various exemplary embodiments are illustrative only. Although only some embodiments are described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportion of various elements, the value of parameters, the installation arrangement, the use of materials, colors, orientations, etc.) can be made without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as being integrally formed can be constructed of multiple parts or elements, the position of the elements can be reversed or otherwise changed, and the nature or number or position of discrete elements can be changed or varied. According to alternative embodiments, the order or sequence of any process, logical algorithm or method steps can be changed or reordered. Other replacements, modifications, changes and omissions can also be made to the design, operating conditions and arrangements of various exemplary embodiments without departing from the scope of the present invention.
[0028] Although the current application describes a specific combination of features in the appended claims, various embodiments of the present invention are directed to any combination of any of the features described herein, regardless of whether such a combination is currently claimed, and any such combination of features may be claimed in this application or in a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.
[0029] In various exemplary embodiments, relative dimensions, including angles, lengths, and radii, as shown in the drawings are drawn to scale. Actual measurements of the drawings will disclose the relative dimensions, angles, and ratios of the various exemplary embodiments. The various exemplary embodiments extend to various ranges around absolute and relative dimensions, angles, and ratios that can be determined from the drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the drawings. In addition, actual dimensions that are not explicitly stated in this specification can be determined by using the ratios of the dimensions measured in the drawings in conjunction with the explicit dimensions stated in this specification.
Claims
1. A labor-saving pliers, comprising a first pliers head, a second pliers head, a first handle and a second handle, wherein the first handle is rotatably connected to the second handle, the first pliers head is rotatably connected to the second pliers head, the first pliers head comprises a guide hole, the first handle comprises a column slidably disposed in the guide hole, an adjustable jaw is formed between the first pliers head and the second pliers head, It is characterized in that The labor-saving pliers have a folded state and an unfolded state, and the guide hole has a first end surface away from the jaws and a second end surface close to the jaws; In the unfolded state, the jaws are opened to their maximum extent; In the folded state, the jaws have a minimum opening, and the posts are adjacent to the first end surface with a spacing of 0.3 mm to 1.2 mm.
2. The labor-saving pliers according to claim 1, Features: In the expanded state, the columns are adjacent to the second end surface and the interval between them is 0.2 mm to 0.5 mm.
3. The labor-saving pliers according to claim 1, Features: In the expanded state, the guide hole is offset from the first clamp head portion to form an outlet.
4. The labor-saving pliers according to claim 2, Features: In the folded state, the guide hole coincides with the first clamp head.
5. The labor-saving pliers according to claim 1, Features: The first handle includes a gripping portion and a connecting portion, the connecting portion is rotatably connected to the first clamp head, and the connecting portion is integrally formed with the column.
6. The labor-saving pliers according to claim 1, Features: The first end surface and the second end surface are both curved surfaces and are convex in a direction away from the column.
7. The labor-saving pliers according to claim 6, Features: The guide hole is waist-shaped.
8. The labor-saving pliers according to claim 7, Features: When the labor-saving pliers are in a folded state, the length direction of the guide hole is parallel to the jaws of the labor-saving pliers.