JPH0675634U - Clamp - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability by improving the operability and to ensure the secure fixation of the work. [Structure] A clamp body 20 having a lower surface as a mounting surface 21 and elongated slots 22 for mounting that are long in the tightening direction and formed through the upper and lower surfaces, and both sides of the clamp body 20 are movably supported in the tightening direction. A pair of guides 26 and 27, a clamp piece 30 fixed to the forward end portions of the pair of guides 26 and 27, and fixed between the clamp piece 30 and the tip end surface of the clamp body 20. The clamp piece 34 is movably supported in the lower surface direction, and has a surface facing the clamp piece 30 as an inclined surface 35 and moves in the lower surface direction to push up the clamp piece 30 in the tightening direction. Has a structure in which a tightening bolt 37 for moving the tightening piece 34 in the vertical direction is fitted from the upper surface side, and the tip end portion of the tightening bolt 37 is screwed into the clamp body 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp for fixing a work to a jig plate.

[0002]

[Prior art]

 Conventionally, the clamp shown in FIG. 4 has been used as a clamp for mounting a plurality of types of workpieces having different shapes on a single-shaped jig plate.

This clamp has a lower surface as a mounting surface, and a protrusion 3 in the tightening direction at the center of the tip of a clamp body 2 formed by penetrating an elongated slot 1 for mounting that is long in the tightening direction in the vertical direction. Are formed on both sides of the protrusion 3, and inclined surfaces 4 and 5 having the tip center portion of the protrusion 3 as the apex are formed on the both sides of the protrusion 3. The protrusion 3 is formed with holes 6 open on both sides of This hole 6 is an elongated hole in the tightening direction. Clamp pieces 7 and 8 are arranged on both sides of the projecting portion 3, and one clamp piece 7 is formed with an inclined surface 9 facing one inclined surface 4 of the projecting portion 3 and the other. The clamp piece 8 has an inclined surface 10 facing the other inclined surface 5 of the protruding portion 3. A through hole 11 is formed in one clamp piece 7 and a screw hole 12 is formed in the other clamp piece 8. A bolt 13 is passed through the through hole 11 of the clamp piece 7, and the bolt 13 Through the hole 6 of the projecting portion 3 and further screwed into the screw hole 12 of the other clamp piece 8.

Then, as shown in FIG. 5, the clamp pieces 7 and 8 are pressed against the work 15 placed on the jig plate 14 with the bolts 13 loosened, so that the clamp body 2 is fixed. After fixing to the jig plate 14 with the bolt 16, the bolt 13 on the side surface of the clamp piece 7 is turned with a wrench to tighten the clamp pieces 7 and 8, the clamp pieces 7 and 8 approach each other, and the inclined surface The clamp pieces 7 and 8 are moved in the tightening direction by 4 and 5, and the work 15 is pressed against the reference surface 17 of the jig plate 14 to be fixed.

[0005]

[Problems to be solved by the device]

 According to the clamp having the above structure, since the head 18 of the bolt 13 for fastening the clamp pieces 7 and 8 is on the side surface of the clamp piece 7, when the wrench engaged with the head 18 of the bolt 13 is turned. The handle of the wrench hits the jig plate 14 and cannot be rotated 360 degrees. For this reason, after the wrench is rotated about 180 degrees, the wrench is once disengaged, and the wrench is engaged and rotated again to the original position, which complicates the work.

Further, when a plurality of clamps are to be mounted at narrow intervals in order to obtain a large tightening force, it is necessary to provide at least a wrench-inserting interval between the clamps, and it is impossible to install at a narrower interval. . Furthermore, when tightening the clamp pieces 7 and 8, the rotating force of the bolt 13 may act on the clamp pieces 7 and 8, and the work 15 may float from the jig plate 14.

In view of the above points, the present invention provides a clamp for improving workability by improving operability and also for securely fixing a work. Is.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a lower surface as a mounting surface and a clamp body formed by penetrating through the upper and lower surfaces a long hole for mounting that is long in the tightening direction, and tightening on both sides of the clamp body respectively. A pair of guides movably supported in the attaching direction, a clamp piece fixed across the forward end portions of the pair of guides, and a vertical direction between the clamp piece and the tip surface of the clamp body. And a clamp piece that is movably supported on the clamp piece and that has a surface facing the clamp piece as an inclined surface and moves in the lower surface direction and pushes up the clamp piece in the tightening direction. A tightening bolt that moves in the lower surface direction was fitted from the upper surface side, and the tip of the bolt was screwed into the clamp body.

[0009]

[Action]

 After fixing the clamp body to the jig plate by loosening the tightening bolt and moving the tightening piece toward the upper surface, press the clamp piece against the workpiece placed on the jig plate. , When the tightening piece is rotated by moving the tightening bolt in the lower surface direction, that is, when it is pushed between the clamp body and the clamp piece, the clamp piece is tightened in the tightening direction by the inclined surface formed on the tightening piece. It is pushed up to and fixed by pressing the work piece against the reference surface of the jig plate.

At this time, the clamp piece receives a pressing force to the lower surface direction together with the tightening direction due to the inclined surface of the tightening piece, so that the work does not float from the jig play when the work is fixed by the clamp piece. . Further, since the head portion of the tightening bolt for moving the tightening piece in the vertical direction is on the upper surface side, the work of rotating the tightening bolt becomes easy.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. 1 and 2 show an embodiment of the present invention. In FIG. 1 and FIG. 2, 20 is a clamp main body, and the lower surface thereof is a mounting surface 21 to a jig plate. The clamp body 20 is formed with an elongated slot 22 for attachment which penetrates the upper and lower surfaces. The long hole 22 is a long hole in the tightening direction. Reference numeral 23 denotes a stepped portion for receiving a bolt head formed in the elongated hole 22. The stepped portion 23 is inclined such that the tightening direction side is higher than the mounting surface 21.

Reference numerals 24 and 25 are guide pins provided on both sides of the clamp body 20, and 26 and 27 are a pair of guides movably supported on both sides of the clamp body 20 in the tightening direction. Guide grooves 28 and 29, into which the guide pins 24 and 25 are slidably fitted, are formed therein.

Reference numeral 30 denotes a clamp piece fixed across the forward end portions of the pair of guides 26, 27. Reference numeral 31 is a bolt for fixing the clamp piece 30 to the guides 26 and 27. The front end surface of the clamp piece 30 serves as a pressing surface 32 that contacts and presses the work. Further, in the rear end surface of the clamp piece 30, that is, the facing surface that faces the tip surface of the clamp body 20, a lower surface side, that is, the mounting surface 21 side, is an inclined surface 33 formed so as to approach the tip surface of the clamp body 20. Has become.

Reference numeral 34 denotes a tightening piece supported between the clamp piece 30 and the tip end surface of the clamp body 20 so as to be movable in the vertical direction. On the tip end surface of the tightening piece 34, that is, on the facing surface that faces the inclined surface 33 of the clamp piece 30, when the tightening piece 34 is moved downward, the clamp piece 30 is pushed up in the tightening direction. It becomes such an inclined surface 35. The inclined surface 35 of the tightening piece 30 has a slightly larger inclination angle than the inclined surface 33 of the clamp piece 30, and the upper surface side edge 36 of the inclined surface 33 of the clamp piece 30 contacts the inclined surface 35 of the tightening piece 30. It is like this.

The movement of the tightening piece 34 in the upper and lower directions is performed by turning a bolt 37 screwed to the clamp body 20. More specifically, the tightening piece 34 is formed with a through hole 38 through which the bolt 37 is passed in the vertical direction, that is, the moving direction. On the other hand, the clamp body 20 is formed with a protruding portion 39 lower than the tightening piece 34 on the lower surface side of the tip surface, that is, the mounting surface 21 side, and a screw hole for screwing the bolt 37 into the protruding portion 39. 40 is provided. The tip of a tightening bolt 37 inserted into the through hole 38 of the tightening piece 34 from the upper surface side is screwed into the screw hole 40. Then, by tightening the tightening bolt 37, the tightening piece 34 moves in the lower surface direction and is pushed between the clamp piece 30 and the clamp body 20, and the clamp piece 30 is pushed out in the tightening direction to tighten. By loosening the bolt 37, the tightening piece 34 is moved to the upper surface side by the spring 41 interposed between the projecting portion 39 and the tightening piece 34. 42 is the head of the tightening bolt 37.

Next, the use of the clamp shown in the above embodiment will be described. Formed on the clamp body 20 with the tightening bolts 37 loosened and the pressing surface 32 of the clamp piece 30 pressed against the work 44 placed on the jig plate 43 as shown in FIG. The bolt 45 is inserted through the elongated hole 22 and tightened to fix the clamp body 20 to the jig plate 43. Next, when the wrench is engaged with the head 42 of the tightening bolt 37 and the tightening bolt 37 is rotated in the tightening direction, the tightening piece 34 moves in the lower surface direction and the clamp body 20 and the clamp piece 30 are separated from each other. It is pushed in between. By the movement of the tightening piece 34, the clamp piece 30 is pushed by the inclined surface 35 of the tightening piece 34, slides on the inclined surface 35 and is pushed up in the tightening direction, whereby the work 44 is moved to the jig plate 4. It is pressed against the reference surface 46 of No. 3 and fixed.

At this time, since the upper edge 36 of the inclined surface 33 of the clamp piece 30 is in contact with the inclined surface 35 of the tightening piece 34, the pressing force of the tightening piece 34 on the clamp piece 30 is constant. Therefore, the work 44 is prevented from being lifted up from the jig plate 43.

Further, since the contact area between the clamp piece 30 and the tightening piece 34 that comes into contact with and pushes up the clamp piece 30 is small, when the tightening bolt 37 is tightened, the clamp piece 30 and the tightening piece 34 are not bitten. This can be prevented, and the operation of tightening and loosening the tightening bolt 37 becomes easy. Further, since the head portion 42 of the tightening bolt 37 is on the upper surface side, the wrench engaged with the head portion 42 of the tightening bolt 37 can be rotated 360 degrees, and a plurality of clamps can be arranged at narrow intervals. Can be installed with.

[0019]

[Effect of device]

 As described above, according to the clamp of the present invention, the lower surface serves as the mounting surface, and the elongated clamp mounting hole is formed through the upper and lower surfaces in the tightening direction. A pair of guides movably supported in the direction, a clamp piece fixed across the forward end portions of the pair of guides, and an upper and lower surface between the clamp piece and the tip surface of the clamp body. And a clamp piece that is supported so as to be movable in the direction and that has a surface facing the clamp piece as an inclined surface and moves in the lower surface direction and pushes up the clamp piece in the tightening direction. Since a tightening bolt that moves the upper and lower surfaces is fitted from the upper surface side and the tip of the bolt is screwed into the clamp body, the pressing force of the tightening piece against the clamp piece is always in the tightening direction and the lower surface direction. Will be added to the It is possible to reliably prevent the work that has been clamped and fixed from floating from the jig plate, and since the operation of the tightening bolt that moves the tightening piece in the vertical direction can be performed from the top side. The workability is good, and it is possible to install at narrow intervals.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of FIG.

FIG. 3 is an explanatory view showing a usage state of the embodiment shown in FIG.

FIG. 4 is a front view showing an example of a conventional clamp.

5 is an explanatory view showing an example of use of the conventional clamp shown in FIG.

[Explanation of symbols]

 20 Clamp Main Body 21 Mounting Surface 22 Long Holes 26, 27 Guide 30 Clamp Piece 34 Tightening Piece 35 Inclined Surface 37 Tightening Bolt

Claims (1)

[Scope of utility model registration request] 1. A clamp main body having a lower surface as a mounting surface, and elongated slots for mounting that are long in the tightening direction and formed through the upper and lower surfaces,
A pair of guides movably supported in the tightening direction on both sides of the clamp body, a clamp piece fixed across the forward end portions of the pair of guides, and a tip surface of the clamp piece and the clamp body. And a clamp piece that is movably supported in the vertical direction between the and, and has a surface facing the clamp piece as an inclined surface and moves in the lower surface direction to push up the clamp piece in the tightening direction. Is a clamp in which a tightening bolt for moving the tightening piece in the vertical direction is fitted from the upper surface side, and the tip end of the bolt is screwed into the clamp body.