Labor saving clamp

Abstract

This utility model provides a labor-saving clamp, relating to the field of clamps, including a left clamping arm and a right clamping arm. The working surfaces of the left and right clamping arms are each provided with a clamping segment composed of at least three continuous folded lines. The included angle between each folded line forms a concave-convex contact shape adapted to the surface of the object being clamped. This application uses the folded structure of the left clamping arm 1 and the right clamping arm 2 to form a symmetrical clamping curved surface, creating a concave-convex contact shape adapted to the surface of the object being clamped. From a structural design perspective, it breaks through the limitations of planar contact in traditional clamps, achieving the technical effect of "labor-saving clamping" by increasing the contact area and enhancing friction without relying on a complex drive system.

Description

Technical Field

[0001] This utility model relates to the field of clamps, and in particular to a labor-saving clamp. Background Technology

[0002] Fixtures are essential tools for achieving stable workpiece clamping. Traditional fixtures typically employ planar or simple curved surface structures for clamping, resulting in a relatively simple contact pattern between the clamping surface and the workpiece surface, primarily relying on two-point or planar contact for fixation. However, for workpieces with uneven surfaces or irregular contours, traditional fixtures suffer from the following significant drawbacks:

[0003] Flat or simple curved surfaces are difficult to conform to the complex curved surfaces of workpieces, only forming local point or line contact with limited friction. The workpiece is prone to sliding or rotating during clamping, especially under vibration during handling or processing, posing a risk of detachment. To compensate for insufficient contact area, greater clamping force is required, leading to high labor intensity for operators and demanding requirements on the driving force of automated clamping equipment, increasing energy consumption and equipment costs. Fixed clamping surfaces cannot flexibly adapt to the contour differences of different workpieces. For precision workpieces with high surface accuracy requirements, concentrated force at a single point can easily cause surface indentation, deformation, or even cracking.

[0004] In existing technologies, some clamps attempt to improve fit by adding elastic pads or adjustable joints, but the elastic deformation range is limited, the adjustable structure is complex and lacks reliability, and they still cannot effectively solve the core contradiction of "insufficient contact area - high clamping force requirement - laborious operation". Therefore, a labor-saving clamp is proposed. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problem of large clamping force requirements due to insufficient contact area of ​​the clamp through the following technical solution.

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

[0007] A force-saving clamp includes a left clamping arm and a right clamping arm. The working surfaces of the left clamping arm and the right clamping arm are respectively provided with a clamping segment composed of at least three continuous broken lines. The included angle between each broken line forms a concave-convex contact shape that is adapted to the surface of the object being clamped.

[0008] Preferably, the clamping segment of the left clamping arm is composed of seven broken lines, and the included angles of adjacent broken line segments from the root to the end along the clamping direction are 105°±2°, 75°±2°, 115°±2°, 145°±2°, 115°±2°, 140°±2° and 160°±2° respectively.

[0009] Preferably, the clamping section of the right clamping arm consists of six broken lines and two right-angle bends. The included angles of adjacent broken line segments from the root to the end along the clamping direction are 135°±2°, 150°±2°, 165°±2°, 145°±2°, and 110°±2°, respectively. The included angles of the two bends at the end are both 90°±2°, and they form a symmetrical clamping surface with the left clamping arm.

[0010] Preferably, the seven fold lines of the left clamping arm form a concave-convex contact surface that fits the object surface through angular matching.

[0011] Preferably, the right clamping arm forms a symmetrical clamping surface with the concave and convex contact surface of the left clamping arm through multiple fold lines and two bent sections at the end.

[0012] Preferably, the left and right clamping arms are made of metal, engineering plastics, or composite materials.

[0013] Preferably, the seven-segment folded line of the left clamping arm forms a multi-contact stepped contact structure, which gradually conforms to the left side surface of the object during clamping.

[0014] Preferably, the six fold lines of the right clamping arm and the included angle of the two bottom bends form a multi-dimensional fitting structure, which adapts to the right side surface of the object in all directions when clamping.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The labor-saving clamp provided in this application forms a symmetrical clamping surface through the zigzag structure of the left clamping arm 1 and the right clamping arm 2, creating a contact shape that adapts to the surface of the object being clamped. This structural design overcomes the limitations of traditional clamps' planar contact, achieving the technical effect of "labor-saving clamping" by increasing the contact area and enhancing friction without relying on a complex drive system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a front view schematic diagram of the left clamping arm of this utility model;

[0020] Figure 3 This is a front view schematic diagram of the right clamping arm of this utility model.

[0021] Drawing number explanation: 1. Left clamping arm; 11. Concave and convex contact surface; 2. Right clamping arm; 21. Symmetrical clamping surface; 3. Bending part. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0025] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0026] Please see Figure 1-3 A labor-saving clamp includes a left clamping arm 1 and a right clamping arm 2. The working surfaces of the left clamping arm 1 and the right clamping arm 2 are respectively provided with a clamping segment composed of at least three continuous broken lines. The included angle between each broken line forms a concave-convex contact shape that is adapted to the surface of the object being clamped.

[0027] The labor-saving clamp of this application is mainly composed of a left clamping arm 1 and a right clamping arm 2. The working surfaces of the left clamping arm 1 and the right clamping arm 2 are respectively provided with specially designed zigzag clamping sections, which achieve stable clamping of the clamped object through the concave-convex contact shape.

[0028] The clamping section of the left clamping arm 1 consists of seven continuous zigzag lines. The included angles of adjacent zigzag lines from the root to the end along the clamping direction are 105°±2°, 75°±2°, 115°±2°, 145°±2°, 115°±2°, 140°±2°, and 160°±2°, respectively. These seven zigzag lines, through precise angular alignment, form a concave-convex contact surface 11 that conforms to the object's surface, constituting a multi-contact stepped contact structure. In practical applications, the left clamping arm 1 can be made of metal (such as aluminum alloy), engineering plastics (such as polycarbonate), or composite materials (such as carbon fiber reinforced plastic) to balance structural strength and lightweight requirements.

[0029] The clamping section of the right clamping arm 2 consists of six broken lines and two right-angle bends 3. The included angles of adjacent broken line segments from the root to the end along the clamping direction are 135°±2°, 150°±2°, 165°±2°, 145°±2°, and 110°±2°, respectively, and the included angles of the two end bends (3) are both 90°±2°. The right clamping arm 2, through multiple broken lines and end bends 3, forms a symmetrical clamping surface 21 with the concave and convex contact surface 11 of the left clamping arm 1, constituting a multi-dimensional fit structure. The material selection of the right clamping arm 2 is the same as that of the left clamping arm 1 to ensure that the mechanical properties of the two are matched.

[0030] Furthermore, this design of the right clamping arm 2 allows for a uniform distribution of clamping force when gripping objects, preventing damage caused by excessive pressure at a single point. Simultaneously, the symmetrical clamping surface 21 design enables the clamp to automatically adjust its clamping angle during the clamping process, adapting to objects of different shapes and sizes, thus improving the clamp's versatility and clamping stability.

[0031] The left clamping arm 1 and the right clamping arm 2 are assembled into one unit via a pivot or other movable connection (not shown in the figure), forming an openable and closable clamping structure. During use, the object to be clamped is placed between the two clamping arms, and external force is applied to close the arms. At this time, the seven fold lines of the left clamping arm 1, the six fold lines of the right clamping arm 2, and the bent portion 3 work together to achieve full contact with the object's surface.

[0032] The labor-saving clamp of this utility model optimizes the clamping force based on the following working principle:

[0033] The function of the multi-contact stepped contact structure:

[0034] The seven segments of the left clamping arm 1 form a multi-contact stepped contact structure. During clamping, each segment sequentially contacts the left side surface of the object. This segment-by-segment contact method distributes the clamping force across multiple contact points, avoiding excessive force at a single point and thus reducing the amplitude of a single force application. According to mechanical principles, the dispersed contact points can more effectively transfer external force to the clamped object, reducing the tendency to slip due to localized stress concentration and improving clamping stability.

[0035] The role of multi-dimensional bonding structure:

[0036] The six-segment folds of the right gripping arm 2 and the included angles of the two bottom bends 3 form a multi-dimensional fit structure, enabling it to adapt to the right side surface of the object in all directions. This structural design optimizes the force transmission path, ensuring that the gripping force is evenly distributed across the object's surface. Simultaneously, the precisely designed angles reduce reaction forces during operation. For example, the right-angle bend 3 at the end provides additional lateral support, preventing the object from sliding laterally during gripping and further enhancing effort-saving performance.

[0037] Synergistic effect of concave-convex contact morphology:

[0038] The zigzag structure of the left clamping arm 1 and the right clamping arm 2 forms a symmetrical clamping surface, creating a concave-convex contact pattern with the surface of the object being clamped. This contact pattern not only increases the contact area and improves friction, but also enhances clamping stability through the constraint of the geometric shape. When an external force is applied, the concave-convex structure interlocks, effectively resisting the tendency of the object to move, allowing for stable clamping with a relatively small clamping force, thus achieving a labor-saving effect.

[0039] The combination of lightweight materials and structure:

[0040] The left gripping arm 1 and right gripping arm 2 are made of lightweight materials such as metal, engineering plastics, or composite materials, reducing the weight of the clamp itself while ensuring structural strength. Combined with the effort-saving design of the zigzag structure, the force required for hand gripping is further reduced, enhancing the effort-saving characteristics of the clamp and improving the user experience.

[0041] Through the above structural design and working principle, the labor-saving clamp of this utility model successfully solves the problem that traditional clamps require a large clamping force due to insufficient friction, and achieves stable clamping under relatively small force conditions.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A labor-saving clamp, characterized in that, It includes a left clamping arm (1) and a right clamping arm (2). The working surfaces of the left clamping arm (1) and the right clamping arm (2) are respectively provided with a clamping segment composed of at least three continuous broken lines. The included angle between each broken line forms a concave-convex contact shape that is adapted to the surface of the object being clamped.

2. The labor-saving clamp according to claim 1, characterized in that: The clamping section of the left clamping arm (1) consists of seven broken lines. The angles between adjacent broken line segments from the root to the end along the clamping direction are 105°±2°, 75°±2°, 115°±2°, 145°±2°, 115°±2°, 140°±2° and 160°±2° respectively.

3. The labor-saving clamp according to claim 2, characterized in that: The clamping section of the right clamping arm (2) consists of six broken lines and two right-angle bends (3). The included angles of the adjacent broken line segments from the root to the end along the clamping direction are 135°±2°, 150°±2°, 165°±2°, 145°±2°, and 110°±2° respectively. The included angles of the two bends (3) at the end are both 90°±2°, and they form a symmetrical clamping surface with the left clamping arm (1).

4. The labor-saving clamp according to claim 2, characterized in that: The seven-segment broken lines of the left clamping arm (1) form a concave-convex contact surface (11) that fits the surface of the object through angular matching.

5. A labor-saving clamp according to claim 3, characterized in that: The right clamping arm (2) forms a symmetrical clamping surface (21) with the concave and convex contact surface (11) of the left clamping arm (1) through multiple fold lines and two bent sections (3) at the end.

6. The labor-saving clamp according to claim 1, characterized in that: The left clamping arm (1) and the right clamping arm (2) are made of metal, engineering plastic or composite material.

7. The labor-saving clamp according to claim 1, characterized in that: The seven-segment folded line of the left clamping arm (1) forms a multi-contact stepped contact structure, which gradually adheres to the left side surface of the object during clamping.

8. A labor-saving clamp according to claim 7, characterized in that: The six fold lines of the right clamping arm (2) and the angle between the two bottom bends (3) form a multi-dimensional fitting structure, which adapts to the right side surface of the object in all directions when clamping.

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