Telescopic C-shaped clamp

Abstract

A telescopic C-shaped clamp comprises a fixed arm, a connecting pin, a movable arm, a rivet, a connecting plate, a lead screw and a cross arm, the L-shaped end of the fixed arm is provided with a presser foot, the middle of the fixed arm is provided with a through hole used for installing the connecting pin, one end of the movable arm is provided with a threaded hole used for being connected with the lead screw, and the middle of the connecting plate is provided with a through groove used for containing the fixed arm and the movable arm. One end of the lead screw is provided with a pressing foot, the other end of the lead screw is provided with a through hole used for installing a cross arm, the movable arm is connected with the connecting plate through a rivet, the lead screw is in threaded connection with the movable arm, and the cross arm is installed in the through hole in the lead screw. After the fixed arm is inserted into the through groove of the connecting plate, the fixed arm is connected with the connecting plate through the connecting pin, the connecting plate slides to enable the connecting pin to be located in different U-shaped grooves of the connecting plate, the distance between the lead screw presser foot and the fixed arm presser foot is adjusted, a telescopic structure is achieved, the opening degree of a product can be increased through the structure, and small-range rapid adjustment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, in particular to a telescopic C-shaped clamp. Background Art

[0002] The maximum clamping thickness of the existing C-clamp is usually an unadjustable structure, and the clamping range is usually adjusted by a knob screw, so the ordinary C-clamp is time-consuming and laborious to use, and cannot be used when encountering thicker objects. Summary of the invention

[0003] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a telescopic C-clamp, which can adjust the maximum opening by adjusting the position of the connecting pin on the fixed arm in the connecting plate slot. This structure can not only adjust the opening amount, but also realize the function of rapid adjustment of the opening amount. The structure is simple and easy to manufacture, which saves time and effort when used.

[0004] The technical solution of the utility model is:

[0005] A telescopic C-shaped clamp comprises a fixed arm, a connecting pin, a movable arm, a rivet, a connecting plate, a lead screw and a cross arm. The fixed arm is L-shaped and is provided with a pressure foot at one end, and a through hole is provided in the middle for installing the connecting pin. The connecting pin is a cylindrical pin. A threaded hole is provided at one end of the movable arm for connecting with the lead screw. A through groove is provided in the middle of the connecting plate for placing the fixed arm 3. The movable arm has a through hole at one end for connecting with the movable arm and an equidistant and connected U-shaped groove at the other end. A pressure foot is provided at one end of the lead screw and a through hole is provided at the other end for installing the cross arm. The movable arm is connected to the connecting plate by rivets, the lead screw is threadedly connected to the movable arm, and the cross arm is installed in the through hole on the lead screw. After the fixed arm is inserted into the through groove of the connecting plate, the fixed arm is connected to the connecting plate by the connecting pin. The connecting plate is slid so that the connecting pin is in different U-shaped grooves of the connecting plate, so as to adjust the spacing between the lead screw pressure foot and the fixed arm pressure foot, and realize the telescopic structure. The structure can increase the opening amount of the product and realize rapid adjustment in a small range. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is the structural diagram of the utility model;

[0007] Figure 2 This is a schematic diagram of the fixed arm structure of the utility model;

[0008] Figure 3 for Figure 2 Side view of

[0009] Figure 4 This is a schematic diagram of the structure of the movable arm of the utility model;

[0010] Figure 5 for Figure 4 Side view of

[0011] Figure 6 This is a schematic diagram of the connecting plate structure of the utility model;

[0012] Figure 7 for Figure 6 Side view of

[0013] Figure 8 This is a schematic diagram of the screw structure of the utility model.

[0014] In the figure, 1. fixed arm, 2. connecting pin, 3. movable arm, 4. rivet, 5. connecting plate, 6. screw, 7. cross arm. DETAILED DESCRIPTION

[0015] like Figures 1 to 8 As shown: a telescopic C-shaped clamp, including a fixed arm 1, a connecting pin 2, a movable arm 3, a rivet 4, a connecting plate 5, a screw 6, and a cross arm 7. The fixed arm 1 is L-shaped and has a presser foot at one end, and a through hole is provided in the middle for installing the connecting pin 2. The connecting pin 2 is a cylindrical pin. A threaded hole is provided at one end of the movable arm 3 for connecting with the screw 6. A through groove is opened in the middle of the connecting plate 5 for placing the fixed arm 1 and the movable arm 3. A through hole is provided at one end for connecting with the movable arm 3, and an equidistant and connected U-shaped groove is provided at the other end. 6 is provided with a presser foot at one end, and a through hole is provided at the other end for installing a cross arm 7. The movable arm 3 is connected to the connecting plate 5 by a rivet 4, the lead screw 6 is threadedly connected to the movable arm 3, and the cross arm 7 is installed in the through hole on the lead screw. After the fixed arm 1 is inserted into the through groove of the connecting plate 5, the fixed arm 1 is connected to the connecting plate 5 by the connecting pin 2. The connecting plate 5 is slid so that the connecting pin 2 is in different U-shaped grooves of the connecting plate 5, so as to adjust the distance between the presser foot of the lead screw 6 and the presser foot of the fixed arm 1, and realize the telescopic structure. This structure can increase the opening amount of the product and realize rapid adjustment in a small range.

Claims

1. A telescopic C-shaped clamp, comprising a fixed arm, a connecting pin, a movable arm, a rivet, a connecting plate, a lead screw, and a cross arm, characterized in that The fixed arm is L-shaped, with a presser foot at one end and a through hole in the middle for installing a connecting pin. A through groove is opened in the middle of the connecting plate, one end of which is provided with a through hole for connecting with the movable arm, and the other end is provided with a connected U-shaped groove. A threaded hole is provided at one end of the movable arm for installing a lead screw, and a through hole is provided at the other end for connecting with the connecting plate.

2. A telescopic C-shaped clamp according to claim 1, characterized in that: The number of the connecting plate U-shaped grooves is two or more.

3. A telescopic C-shaped clamp according to claim 1 or 2, characterized in that After the fixed arm is inserted into the connecting plate through groove, the fixed arm is connected to the connecting plate through a connecting pin, and the connecting plate is slid so that the connecting pin is located in different U-shaped grooves of the connecting plate.

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