A floating pressure head limiting structure

Abstract

The utility model provides a kind of floating pressure head limiting structure, including the lever of the hinge hole being provided in middle part, the upper end of the downward extending pressure arm ball head being installed in the front end of lever, the lower end of pressure arm ball head is inserted in a connecting plate, the bottom of pressure arm ball head is provided with spherical surface part, the bottom of connecting plate is connected with a pressing plate, spherical surface part and the top of pressing plate are not contacted each other in natural state;Lever is still provided with a longitudinal through and front and back extension strip-shaped hole in the front of pressure arm ball head, the lower end of a limit cylinder pin is inserted in the upper end of pressing plate, the upper end of limit cylinder pin is inserted into strip-shaped hole, the upper end of limit cylinder pin can only swing front and back but not left and right movement.When pressing plate presses workpiece, spherical surface part and the top surface of pressing plate are attached, clamping force is transmitted to the plane parallel to the surface of pressing plate along pressure arm ball head, spherical surface part, clamping force is always perpendicular to the surface of pressing plate, ensure that workpiece is not skewed and pressed, avoid that workpiece surface produces indentation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical clamping technology, specifically to a floating pressure head limiting structure. Background Technology

[0002] Existing lever clamps such as Figure 1 As shown, it includes a base 1 and a lever 2 that is hinged to the base 1 in the middle. A fixed pressure head 3 is provided at the front end of the lever 2. Since the fixed pressure head 3 cannot always be parallel to the surface of the workpiece 4, when pressing the workpiece 4, part of the fixed pressure head 3 will press the workpiece 4, thereby creating an indentation on the surface of the workpiece 4.

[0003] Therefore, those skilled in the art are dedicated to developing a floating pressure head limiting structure that avoids indentation when pressing workpieces. Summary of the Invention

[0004] The purpose of this invention is to develop a floating pressure head limiting structure that avoids indentation when pressing workpieces.

[0005] The objective of this utility model is achieved through the following solution:

[0006] A floating pressure head limiting structure includes a lever with a hinge hole in the middle. The upper end of a downwardly extending pressure arm ball head is installed at the front end of the lever. The lower end of the pressure arm ball head is inserted into a limiting plate. The bottom of the pressure arm ball head is provided with a spherical surface. A pressure plate is connected to the bottom of the limiting plate. In a natural state, the spherical surface and the top of the pressure plate do not contact each other. A longitudinal through-hole extending forward and backward is also provided on the lever in front of the pressure arm ball head. The lower end of a limiting cylindrical pin is inserted into the pressure plate. The upper end of the limiting cylindrical pin extends into the strip hole. The upper end of the limiting cylindrical pin can only swing back and forth and cannot move left and right.

[0007] Furthermore, the pressure plate is triangular in shape, and three buffer pads arranged in a triangular pattern are connected to the bottom of the pressure plate.

[0008] Furthermore, the limiting plate is provided with a tapered enlarged hole to accommodate the spherical surface.

[0009] Furthermore, the pressure plate is provided with a threaded hole, and the limiting plate is provided with a bolt that is threadedly connected to the threaded hole.

[0010] The advantages of this utility model are:

[0011] 1. The pressure arm ball head is suspended on the lever by the limiting plate. The pressure arm ball head can be quickly replaced by removing the limiting plate.

[0012] 2. The clamping force is always perpendicular to the working surface of the pressure plate, which can reduce indentations on the clamping surface;

[0013] 3. By adjusting the length, gap and position of the limiting cylindrical pin and the strip hole, the limiting angle of each side can be designed separately, which can adapt to the working environment of the lever clamp and can be used for non-flat surfaces and irregular surfaces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the lever-type clamping device in the background art;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 for Figure 3 Side view at point AA;

[0018] Figure 5 This is an exploded view of the structure of this utility model. Detailed Implementation

[0019] To enable those skilled in the art to understand the features and effects of this application, the terms and expressions used in the specification and claims are explained and defined in general below. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning understood by those skilled in the art in this application, and in case of conflict, the definitions in this specification shall prevail.

[0020] The theories or mechanisms described and disclosed herein, whether right or wrong, shall not in any way limit the scope of this application, that is, the content of this application may be implemented without being limited by any particular theory or mechanism.

[0021] In this document, "this application" means "this utility model" or "this disclosure".

[0022] The terms “a,” “an,” “a,” or similar expressions are used herein to describe the components and technical features described in this application. Such descriptions are merely for convenience and to provide a general meaning for the scope of this application. Therefore, such descriptions should be understood to include one or at least one, and the singular includes the plural, unless clearly otherwise indicated.

[0023] In this article, "or a combination thereof" means "or any combination thereof", and "any one", "any kind", "any one" means "any one", "any kind", "any one".

[0024] It should be understood that the features disclosed in the various embodiments herein can be arbitrarily combined to form the technical solution of this application, as long as there is no contradiction in the combination of these features.

[0025] The present application will be described below with reference to specific embodiments and examples. It should be understood that these specific embodiments and examples are merely illustrative and are not intended to limit the scope or use of the present application.

[0026] Example 1

[0027] like Figures 2 to 5 As shown, a floating pressure head limiting structure includes a lever 2 with a hinge hole 10 in the middle. The upper end of a downwardly extending pressure arm ball head 5 is mounted on the front end of the lever 2. The lower end of the pressure arm ball head 5 is inserted into a limiting plate 6. A spherical surface 7 is provided at the bottom of the pressure arm ball head 5. A pressure plate 8 is connected to the bottom of the limiting plate 6. In a natural state, the spherical surface 7 and the top of the pressure plate 8 do not contact each other. A longitudinally penetrating and extending strip-shaped hole 9 is also provided on the lever 2 in front of the pressure arm ball head 5. The lower end of a limiting cylindrical pin 11 is inserted into the pressure plate 8. The upper end of the limiting cylindrical pin 11 extends into the strip-shaped hole 9. The upper end of the limiting cylindrical pin 11 can only swing back and forth and cannot move left and right. The pressure plate 8 is triangular in shape, and three buffer pads 12 arranged in a triangle are connected to the bottom of the pressure plate 8 to expand the pressing range. The limiting plate 6 is provided with a conical enlarged hole 13 to accommodate the spherical surface 7. The pressure plate 8 is provided with a threaded hole 14, and the limiting plate 6 is provided with a bolt 15 that is threadedly connected to the threaded hole 14. The structure is simple and easy to disassemble and assemble.

[0028] The working principle of this solution is as follows:

[0029] In its natural state, the spherical part 7 does not contact the pressure plate 8 and is suspended on the lever 2 under the influence of gravity. It is guided by the limiting plate 6 and restricts the displacement of the pressure plate 8. The cooperation between the limiting cylindrical pin 11 and the strip hole 9 causes the upper end of the limiting cylindrical pin 11 to swing back and forth but not to move left and right, thereby restricting the rotation and tilting of the pressure plate 8.

[0030] When the pressure plate 8 presses down on the workpiece 4, the spherical part 7 is in contact with the top surface of the pressure plate 8. The clamping force is transmitted along the ball head 5 of the pressure arm and the spherical part 7 to a plane parallel to the surface of the pressure plate 8. The clamping force is always perpendicular to the surface of the pressure plate 8, ensuring that the workpiece is not pressed off at an angle and avoiding indentations on the surface of the workpiece.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A floating pressure head limiting structure, comprising a lever (2) with a hinge hole (10) in the middle, characterized in that: The lever (2) has a downwardly extending pressure arm ball head (5) installed at its front end. The lower end of the pressure arm ball head (5) is inserted into a limiting plate (6). The bottom of the pressure arm ball head (5) is provided with a spherical surface (7). The bottom of the limiting plate (6) is connected to a pressure plate (8). In its natural state, the spherical surface (7) and the top of the pressure plate (8) do not contact each other. The lever (2) is also provided with a longitudinal through-hole (9) that extends back and forth in front of the pressure arm ball head (5). The lower end of a limiting cylindrical pin (11) is inserted into the pressure plate (8). The upper end of the limiting cylindrical pin (11) extends into the strip hole (9). The upper end of the limiting cylindrical pin (11) can only swing back and forth and cannot move left and right.

2. The floating pressure head limiting structure according to claim 1, characterized in that: The pressure plate (8) is triangular in shape, and three buffer pads (12) arranged in a triangle are connected to the bottom of the pressure plate (8).

3. The floating pressure head limiting structure according to claim 1, characterized in that: The limiting plate (6) is provided with a tapered enlarged hole (13) for accommodating the spherical surface (7).

4. The floating pressure head limiting structure according to claim 1, characterized in that: The pressure plate (8) is provided with a threaded hole (14), and the limiting plate (6) is provided with a bolt (15) that is threadedly connected to the threaded hole (14).

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