Clamping device with two parallel jaws

Abstract

A clamping device includes first and second clamping members. Each of the first and second clamping members has a handle and a jaw. A bend is formed between two ends of the jaw of the first clamping member, and a first angle between the jaw and the handle of the first clamping member is smaller than 180. Another bend is formed between two ends of the jaw of the second clamping member, and a second angle between the jaw and the handle of the second clamping member is equal to the first angle. The clamping device can be used to clamp a pipe. When the second clamping member is moving from a release position to the clamping position, two clamping portions respectively of the jaws remain parallel to each other such that force is evenly applied to two sides of the pipe.

Claims

1. A clamping device comprising: a first clamping member including a first handle and a first jaw, with the first handle including a connecting end and a holding end, with the first jaw including a front end and a rear end, with the rear end of the first jaw fixed to the connecting end of the first handle, with the first jaw further including a bend between the front end and the rear end of the first jaw, with a first spacing between the bend-and front end being greater than a second spacing between the bend and the rear end, with a first line passing through the bend and the front end of the first jaw, with a second line passing through the bend and the rear end of the first jaw, with a first angle between the first line and the second line being smaller than 180, and with the first jaw further including a clamping portion between the front end and the bend of the first jaw; a second clamping member including a second handle and a second jaw, with the second handle including a connecting end and a holding end, with the second jaw including a front end and a rear end, with the rear end of the second jaw including an inner side pivotably connected to the connecting end of the first handle, with the rear end of the second jaw further including an outer side pivotably connected to the connecting end of the second handle, with the second jaw further including a bend between the front end and the rear end of the second jaw, with the second jaw having a spacing between the front end and the bend equal to the first spacing and greater than a spacing between the bend and the rear end and which is equal to the second spacing, with a third line passing through the bend and the front end of the second jaw, with a fourth line passing through the bend and the rear end of the second jaw, with a second angle between the third line and the fourth line being equal to the first angle, with the second jaw further including a clamping portion between the front end and the bend of the second jaw; and an adjusting member threadedly engaged with the holding end of the first handle, with the adjusting member moving towards or away from the connecting end of the first handle when the adjusting member rotates relative to the first handle, with the second clamping member further including a pressing member and an elastic element, with the pressing member including a first end pivotably connected between the connecting end and the holding end of the second handle, with the pressing member further including a second end abutting the adjusting member, with the second end of the pressing member and the adjusting member jointly moveable relative to the first handle, with the elastic element including a first end attached to the rear end of second jaw and a second end attached between the connecting end and the holding end of the first handle, with the elastic element biasing the second jaw and the first handle towards each other, with the clamping portions of the first and second jaws having toothed sections extending from the respective front ends towards the respective bends and facing edges facing each other and extending from the toothed sections to the respective bends thereof, with the second clamping member moveable relative to the first clamping member between a release position and a clamping position, wherein when the second clamping member is in the release position, the holding end of the first handle and the holding end of the second handle are away from each other, and the clamping portion of the first jaw and the clamping portion of the second jaw are away from each other, wherein when the second clamping member is in the clamping position, the holding end of the first handle and the holding end of the second handle are adjacent to each other, and the clamping portion of the first jaw and the clamping portion of the second jaw are adjacent and extend parallel to each other, and wherein when the toothed section of the clamping portion of the first jaw and the toothed section of the clamping portion of the second jaw abut each other, the facing edges are in a spaced, parallel relation.

2. The clamping device as claimed in claim 1, with the second clamping member further including a releasing member pivotably mounted to the second handle, with the releasing member located between the pressing member and the holding end of the second handle, and with the releasing member biasing the second clamping member from the clamping position to the release position.

3. The clamping device as claimed in claim 2, wherein the elastic element is a tension spring.

4. The clamping device as claimed in claim 1, wherein the facing edges facing each other are of equal width and of a constant size form the front ends to the rear ends.

5. The clamping device as claimed in claim 4, with the front end of the first jaw extending towards a lateral side of the first handle, and with the front end of the second jaw extending towards a lateral side of the second handle.

6. The clamping device as claimed in claim 5, with the bend and the rear end of the first jaw and the holding end of the first handle substantially located on a same fifth line, and with the bend and the rear end of the second jaw and the holding end of the second handle substantially located on a same sixth line.

7. The clamping device as claimed in claim 6, wherein each of facing edges and toothed sections define a rectangular shape along a longitudinal extension.

8. The clamping device as claimed in claim 7, wherein the first angle is in a range between 80 and 100.

9. The clamping device as claimed in claim 8, wherein the first angle is 90.

10. The clamping device as claimed in claim 4, wherein the first and second jaws have rectangular cross sections perpendicular to the facing edges thereof and of an increasing size from the front ends to the rear ends.

Description

DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of a clamping device with two parallel jaws according to the present invention.

(2) FIG. 2 is an exploded, perspective view of the clamping device of FIG. 1.

(3) FIG. 3 is a top view of the clamping device of FIG. 1.

(4) FIG. 4 is a front elevational view of the clamping device of FIG. 1.

(5) FIG. 5 is a cross sectional view of the clamping device of FIG. 1.

(6) FIG. 6 is a partial, cross sectional view of the clamping device of FIG. 1, with a second clamping member of the clamping device in a release position.

(7) FIG. 7 is a front elevational view of the clamping device of FIG. 1, with the second clamping member in the release position.

(8) FIG. 8 is a partial, cross sectional view of the clamping device of FIG. 1, with the second clamping member in a clamping position.

(9) FIG. 9 is a front elevational view of the clamping device of FIG. 1, with the second clamping member in the clamping position.

DETAILED DESCRIPTION OF THE INVENTION

(10) With reference to FIGS. 1-5, a clamping device 10 with two parallel jaws according to the present invention includes a first clamping member 20 and a second clamping member 30.

(11) The first clamping member 20 includes a first handle 21 and a first jaw 22. The first handle 21 includes a connecting end 211 and a holding end 212 opposite to the connecting end 211. An adjusting member 213 is threadedly engaged with the holding end 212 of the first handle 21. The adjusting member 213 moves towards or away from the connecting end 211 of the first handle 21 when the adjusting member 213 rotates relative to the first handle 21.

(12) The first jaw 22 includes a front end 221 and a rear end 222 opposite to the front end 221. The rear end 222 of the first jaw 22 is connected to the connecting end 211 of the first handle 21. The first jaw 22 further includes a bend 223 between the front end 221 and the rear end 222. The front end 221 of the first jaw 22 extends towards a lateral side of the first handle 21. The bend 223 and the rear end 222 of the first jaw 22 and the holding end 212 of the first handle 21 are substantially located on the same line. A first line passes through the bend 223 and the front end 221 of the first jaw 22. A second line passes through the bend 223 and the rear end 222 of the first jaw 22. A first angle 1 between the first line and the second line is smaller than 180 and can be in a range between 80 and 100. In this embodiment, the first angle 1 is 90. The first jaw 22 further includes a clamping portion 224 between the front end 221 and the bend 223 of the first jaw 22. The clamping portion 224 of the first jaw 22 is of a rectangular shape and is planar. Specifically, the clamping portion 224 includes a gripping section extending from the front end 221 towards the bend 223 and a facing edge extending from the gripping section to the bend 223.

(13) The second clamping member 30 is coupled to the first clamping member 20. The second clamping member 30 includes a second handle 31 and a second jaw 32. The second handle 31 includes a connecting end 311 and a holding end 312 opposite to the connecting end 311. The second jaw 32 includes a front end 321 and a rear end 322 opposite to the front end 321. The rear end 322 of the second jaw 32 includes an inner side pivotably connected to the connecting end 211 of the first handle 21. The rear end 322 of the second jaw 32 further includes an outer side pivotably connected to the connecting end 311 of the second handle 31.

(14) The second jaw 32 further includes a bend 323 between the front end 321 and the rear end 322 of the second jaw 32. The front end 321 of the second jaw 32 extends towards a lateral side of the second handle 31. The bend 323 and the rear end 322 of the second jaw 32 and the holding end 312 of the second handle 31 are substantially located on the same line. A third line passes through the bend 323 and the front end 321 of the second jaw 32. A fourth line passes through the bend 323 and the rear end 322 of the second jaw 32. A second angle 2 between the third line and the fourth line is equal to the first angle 1. The second jaw 32 further includes a clamping portion 324 between the front end 321 and the bend 323 of the second jaw 32. The clamping portion 324 of the second jaw 32 is of a rectangular shape and is planar. Specifically, the clamping portion 324 includes a gripping section extending from the front end 321 towards the bend 323 and a facing edge extending from the gripping section to the bend 323. The clamping portions 224 and 324 of the first and second jaws 22 and 32 face each other.

(15) The second clamping member 30 further includes a pressing member 33 and an elastic element 34. The pressing member 33 includes a first end pivotably connected between the connecting end 311 and the holding end 312 of the second handle 31. The pressing member 33 further includes a second end abutting the adjusting member 213. Thus, the pressing member 33 can move jointly with the adjusting member 213 relative to the first handle 21. The elastic element 34 includes a first end attached to the rear end 322 of the second jaw 32 and a second end attached between the connecting end 211 and the holding end 212 of the first handle 21. The elastic element 34 biases the second jaw 32 and the first handle 21 towards each other. In this embodiment, the elastic element 34 is a tension spring.

(16) The second clamping member 30 further includes a releasing member 35 pivotably mounted to the second handle 31. The releasing member 35 is located between the pressing member 33 and the holding end 312 of the second handle 31.

(17) FIGS. 6-9 illustrate use of the clamping device 10 according to the present invention. The second clamping member 30 is moveable relative to the first clamping member 20 between a release position and a clamping position. When the second clamping member 30 is in the release position, the holding end 212 of the first handle 21 and the holding end 312 of the second handle 31 are away from each other, and the clamping portion 224 of the first jaw 22 and the clamping portion 324 of the second jaw 32 are away from each other. On the other hand, when the second clamping member 30 is in the clamping position, the holding end 212 of the first handle 21 and the holding end 312 of the second handle 31 are adjacent to each other, and the clamping portion 224 of the first jaw 22 and the clamping portion 324 of the second jaw 32 are adjacent to each other.

(18) In use of the clamping device 10, a user can clamp a pipe 90 by the clamping portion 224 of the first jaw 22 and the clamping portion 324 of the second jaw 32. When the second clamping member 30 is moving from the release position to the clamping position, the clamping portion 224 of the first jaw 22 and the clamping portion 324 of the second jaw 32 remain parallel to each other such that force is evenly applied to two sides of the pipe 90, avoiding stress concentration and, hence, avoiding breaking of the pipe 90.

(19) If the user intends to release the pipe 90, the user can press the releasing member 35 to push the second clamping member 30 from the clamping position to the releasing position.

(20) Conclusively, when the second clamping member 30 is moving from the release position to the clamping position, the clamping portion 224 of the first jaw 22 and the clamping portion 324 of the second jaw 32 remain parallel to each other such that force is evenly applied to two sides of the pipe 90, avoiding stress concentration and, hence, avoiding breaking of the pipe 90.

(21) Although preferred embodiments of the present invention have been illustrated and described, they should not be construed to restrict the scope of the present invention. Therefore, modifications to numerical values or substitution of equivalent elements thereof or equivalent changes and modifications based on the accompanying claims of the present invention still fall within the scope covered by the present invention.