JPH0716087Y2 - Clamp device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device mainly used for temporary construction work, and more particularly, to an improvement of a clamp device equipped with a toggle mechanism that can be fastened and fixed with one touch.

[0002]

2. Description of the Related Art As a clamp device equipped with a toggle mechanism that can be fastened and fixed with one touch, it is disclosed in Japanese Patent Laid-Open No. 1-295
The clamping device described in 011 is known. This clamp device is provided with a toggle mechanism at the base end of the locking bolt that locks the tip to the lid of the clamp, and by rotating this toggle mechanism, tightening and fixing of the clamp device can be performed with one touch. It was done like this.

[0003]

According to this clamp device, the tightening work time can be greatly shortened as compared with other clamp devices up to that point, but a unique problem due to the mounting of the toggle mechanism. Was to leave.

That is, in this clamp device, the driving body of the toggle mechanism, in which the base end of the locking bolt is rotatably provided on the crocodile, is tightened and fixed by rotating the pipe toward the crocodile. The tightened state is released by releasing the to the outside of the pipe. At this time, when the tightened state is released, a Shino is used as a tool, and this Shino inserts the tip of the Shino into a hole opened on the side surface of the driving body and forcibly releases the driving body. Therefore, if it is repeatedly used many times, the strong tightening force of the clamp device may deform and expand this hole, and there is a possibility that it cannot be used even if other components are normal.

Further, this clamp device, like the conventional clamp device, locks a nut, which has a locking bolt tip screwed to the clamp lid. However, in this clamp device, the nut is adjusted to a predetermined position in advance, and while maintaining this state, it is tightened and fixed instantly by the toggle mechanism.Therefore, during the tightening operation by this toggle mechanism, the nut screwed to the locking bolt is There is a risk of loosening.
Since the position of this nut adjusts the tightening force according to the diameter of the pipe, there are cases where sufficient tightening force cannot be obtained due to loosening of the nut.

Therefore, the present invention has been devised to solve the above-mentioned problems caused by mounting a toggle mechanism.
An object of the present invention is to provide a clamp device that strengthens the structure of the driving body to improve durability and prevents the clamp from loosening due to the tightening operation of the toggle mechanism.

[0007]

In order to achieve the above-mentioned object, the first means of the present invention is a toggle mechanism for the base end of a locking bolt 2 for locking the tip of the clamp cover 1 to its own end. In the clamp device which is provided with the rotary mechanism and is attached and detached by the rotation operation of the toggle mechanism, the rotation operation portion 5A of the toggle mechanism is provided with the insertion hole 5D into which the tool P for releasing the fixation is inserted, and the peripheral edge of the insertion hole 5D. It is because it was bent to form a thick wall.

Further, the turning operation portion 5A of the toggle mechanism in the second means of the present invention has a notch portion 5E into which the tool P for releasing the fixation is inserted into the side surface of the clamp of the turning operation portion 5A.
Is formed.

The third means of the present invention is to provide a clamp mechanism for the base end of the locking bolt 2 for locking the distal end on the lid body 1 of the clamp, and attach and detach it by rotating the toggle mechanism. In the clamp device, a concave or convex fitting portion 1 surrounding the locking groove 1B on the contact surface of the locking nut 6 of the lid body 1 for locking the locking nut 6 screwed to the tip of the locking bolt 2.
C is provided, and the engaging portion 6A that fits into the unevenness of the lid is formed on the surface of the engaging nut 6 that contacts the lid 1.

[0010]

According to the first means of the present invention, the peripheral edge formed in the wall thickness of the insertion hole 5D prevents the insertion hole 5D from being deformed by the frequent insertion of the tool P and enhances the durability of the toggle mechanism.

Further, according to the second means, the releasing tool P inserted in the notch portion 5E includes the clamp and the rotating operation portion 5A.
Is interposed between and to facilitate the release and separation of the rotation operation portion 5A.

Then, in the third means, the locking portion 6A of the locking nut 6 and the fitting portion 1C of the lid 1 are fitted to each other to prevent loosening when the toggle mechanism is tightened.

[0013]

Embodiments of the present invention will be described in detail below with reference to the drawings. Reference numeral 1 shown in the drawings is a lid of the clamp of the present invention. The lid 1 is swingably connected to an open end of the clamp base 4, and the other end of the clamp base 4 is shown. A locking bolt 2 extending from the tip of a connecting arm 3 swingably connected to the portion is locked to a locking piece 1A of the lid 1. At this time, the locking bolt 2 is inserted into the locking groove 1B formed in the locking piece 1A, and the locking nut 6 screwed to the tip of the locking bolt 2 is locked to the locking piece 1A. .

Therefore, as shown in FIG. 4, a concave fitting portion 1 surrounding the locking groove 1B is formed on the contact surface of the locking nut 6 of the locking piece 1A.
C is formed, on the other hand, a convex locking portion 6A is formed on the locking piece 1A contact surface of the locking nut 6, and the fitting portion 1C and the locking portion 6A are fitted and locked. It is possible to prevent the locking nut 6 from loosening during the operation of the toggle mechanism described later in the present invention. Further, the shapes of the fitting portion 1C and the locking portion 6A are not limited to this example. For example, as shown in FIG. 5, the fitting portion 1C has a convex shape surrounding the locking groove 1B. Any shape may be used as long as they are engaged with each other, for example, the engaging portion 6A is formed in a concave shape.

The toggle mechanism of the clamp of the present invention is attached to the tip end portion of the connecting arm 3 which is swingably extended from the clamp base 4. That is, this toggle mechanism is provided with the toggle metal fitting 5 that is swingably connected to the tip of the connecting arm 3 of the clamp.
And a turning operation portion 5A swingably connected to the tip of the toggle fitting 5, and the locking bolt 2 is connected to the connecting portion between the toggle fitting 5 and the turning operation portion 5A. . The toggle metal fitting 5 shown is a metal plate body bent in a substantially U-shape, and one end thereof is pivotally supported on the connecting arm 3 by a pair of upper and lower connecting shafts 5C (see FIGS. 1 and 2). reference). On the other hand, the other end of the toggle metal fitting 5 is sandwiched so that the turning operation portion 5
A is provided, and the end of the locking bolt 2 is inserted between the toggle metal fittings 5, and the rotary shaft 5B pivotally supports the toggle metal fitting 5, the rotary operation portion 5A, and the locking bolt 2. .

The turning operation portion 5A is for performing a tightening / releasing operation of the toggle mechanism, and the toggle mechanism is changed by changing the swinging position of the toggle fitting 5 around the pivotal support portion of the toggle fitting 5 connected to the clamp. It is to be tightened and released. In order to release the fixed toggle mechanism, an insertion hole 5D is formed on the side surface of the rotation operation section 5A for inserting a tool P for releasing, such as Shino, having a sharp tip (see FIG. 2). ). The peripheral edge of the insertion hole 5D is bent, for example, by burring to form the insertion hole 5D with a large thickness (see FIG. 3). In addition to the insertion hole 5D, the clamp P of the rotary operation part 5A is fixed to the side surface of the clamp P for releasing the fixation.
A notch portion 5E for inserting the
The operability of is made easy (see FIG. 1).

6 and 7 show a clamp device according to another embodiment. That is, in the toggle mechanism shown in these figures, the toggle metal fitting 5 and the turning operation portion 5A are integrally formed. Furthermore, this locking bolt 2 and toggle metal fitting 5
In order to reinforce the connecting portion with, the reinforcing metal fitting 7 extending from the side surface of the rotating operation portion 5A to the rotating shaft 5B is provided. The toggle mechanism thus formed has an advantage that the number of parts of the toggle mechanism can be rationalized.

As the material of the toggle metal fitting 5 and the rotary operation portion 5A used in the present invention, a hard steel plate (HITEN material or the like) is planned to be used in order to reduce the weight and increase the strength.

The clamp device shown in FIG. 8 shows an embodiment in which the clamp device of the present application is connected to the end of the rod Q.
The rod Q is used for, for example, root rattle, a bracket, or a wall connection, and in particular, the rod Q is used.
It is characterized by the connection angle between the clamp device and the clamp device of the present application. That is, normally, in this type of rod Q, the clamp base 4 of the clamp device is connected to the end of the rod Q in an orthogonal state. However, such a connection causes inconvenience in the attachment / detachment work of the clamp device. This is because at the time of attachment / detachment work, the pipe material R located inside the locking end portion 4B hits the locking end portion 4B that connects the lid body 1 of the clamp base 4 and projects to the end portion of the hollow. The locking end portion 4B hinders the work of attaching and detaching the clamp device. Therefore, in the present invention, as shown in the drawing, the clamp base 4 is connected to the end of the pipe material R in an inclined state, and the engagement end 4B is prevented from hitting the pipe material R during attachment / detachment work of the clamp device. It is a thing.

[0020]

The present invention achieves the original purpose by being configured as described above. That is, according to the first aspect, the peripheral edge formed to have the wall thickness of the insertion hole prevents the insertion hole from being deformed due to frequent insertion of the tool. As a result, the conventional inconvenience that the clamp device cannot be used due to the deformation of the insertion hole even if the other components are normal is solved.

Further, according to the second aspect, since the notch portion is used instead of the insertion hole, the rotation operation portion can be released and released,
In addition to further improving the durability of the toggle mechanism, workability in removing the clamp device has also been improved.

Further, according to claim 3, since the locking portion of the locking nut and the fitting portion of the lid are fitted to each other to prevent loosening when the toggle mechanism is tightened, the toggle mechanism is attached to the clamp device. The specific problem with was solved.

As described above, according to the present invention, the structure of the driving body of the toggle mechanism mounted on the clamp device is strengthened to improve the durability of the entire clamp device, and the loosening of the clamp due to the tightening operation of the toggle mechanism is prevented. The present invention has a practically useful effect of solving various problems caused by mounting the toggle mechanism.

[Brief description of drawings]

FIG. 1 is a plan view showing the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a cross-sectional view showing an insertion hole and a cutout portion formed in a rotation operation portion of a toggle metal fitting.

FIG. 4 is a cross-sectional view showing the relationship between the fitting portion formed on the lid and the locking portion formed on the locking nut.

FIG. 5 is a sectional view showing another embodiment of the fitting portion and the locking portion.

FIG. 6 is a plan view of an essential part showing another embodiment of the present invention.

FIG. 7 is a front view of the same.

FIG. 8 is a plan view of an essential part showing still another embodiment of the present invention.

[Explanation of symbols]

P Tool, Q Rod, R Pipe Material 1 Lid, 1A Locking Piece, 1B Locking Groove, 1C Fitting Part 2 Locking Bolt 3 Connecting Arm 4 Clamp Base 4A Swing Shaft, 4B Locking End 5 Toggle metal fittings, 5A rotating operation part, 5B rotating shaft, 5
C connection shaft 5D insertion hole, 5E notch, 5F swing part 6 locking nut 7 reinforcement metal fitting, 7A reinforcement shaft

Claims (3)

[Scope of utility model registration request] 1. A turning operation part of a toggle mechanism in a clamping device, wherein a base end of a locking bolt for locking a tip end is provided with a toggle mechanism on a lid of the clamp, and the clamp mechanism is attached and detached by turning operation of the toggle mechanism. A clamping device characterized in that an insertion hole into which a tool for releasing the fixation is inserted is opened, and a peripheral edge of the insertion hole is bent to form a thick wall. 2. The clamp device according to claim 1, wherein the rotation operation portion of the toggle mechanism has a notch portion on a side surface of the clamp of the rotation operation portion into which a tool for releasing the fixing is inserted. 3. A clamp device provided with a crocodile toggle mechanism at the base end of a locking bolt for locking the tip on a lid of a clamp, and a clamp device which is attached / detached by turning operation of the toggle mechanism, at the tip of the locking bolt. A concave or convex fitting portion surrounding the locking groove is provided on the locking nut contact surface of the lid that locks the locking nut screwed, and the lid contact surface of the locking nut A clamping device characterized in that a locking portion that fits into the unevenness of the is formed.