JPH0351926B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clamp device suitable for use in construction work and the like.

[Prior Art] Conventionally, in construction work, for example, when fixing the long press 2 to the lintel 1, as shown in FIG.
Fixing work such as nailing is performed while the parts are temporarily held in place.

[Problems to be solved by the invention] However, in the case of the above-mentioned conventional vise 3,
When attaching and detaching the vise 3 to the lintel 1 and the long press 2, it is necessary to screw the fixing screw 5 into the base 4, resulting in poor workability.

In addition, in Japanese Patent Publication No. 11270/1983, a second clamp arm is connected to a first clamp arm by a pin, and both arms are operated to open and close, and the tip of a fixing screw screwed into the first clamp arm is connected to the second clamp arm by a pin. A clamp device is described in which the opening degree of both arms is fixed by abutting against the shoulders of two clamp arms, and a body to be clamped is clamped between the two arms. However, even with this clamp device, when attaching and detaching a clamped object between both clamp arms, it is necessary to screw a fixing screw into the first clamp arm, resulting in poor work efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a clamp device that can clamp and unclamp a clamped object with a single touch operation.

[Means for solving the problems] The present invention provides a second clamp arm in the intermediate portion of the first clamp arm.
A clamping device that connects clamp arms with pins, opens and closes both arms, and clamps an object to be clamped between a gripping part of a first clamp arm and a gripping part of a second clamp arm, the clamping device having a pin connected to the second clamp arm. A closing operation arm to be coupled, one end of which is pin-coupled to the closing operation arm, the other end rotatably engaged with a slide guide provided on the first clamp arm, and engaged with the closing operation arm during the closing operation. a connecting link that is interposed between the first clamp arm and the second clamp arm and biases both arms in the direction of mutually opening the arms; and an opening operation section that is provided on the closing operation arm and that releases the engagement between the closing operation arm and the connecting link.

[Function] According to the above-mentioned clamp device, when the closing operation arm is pulled toward the first clamp arm by, for example, grasping the first clamp arm and the closing operation arm, the closing operation arm and the connecting link are disconnected. engage with each other. In this clamp device, when the closing operation arm and the connecting link engage with each other to form a combined link as described above, this combined link, the first clamp arm, and the second clamp arm These three members form a stable three-link structure, the opening degree of the gripping portion of the first clamp arm and the gripping portion of the second clamp arm is kept constant, and the object to be clamped is clamped between these gripping portions.

Therefore, in the above clamping device, when clamping the object to be clamped, the clamping device is formed by three members: the first clamp arm, the second clamp arm, and the combined link of the closing operation arm and the connecting link. The shape of the three links differs depending on the position where the other end of the connecting link engages with the slide guide portion of the first clamp arm. Therefore,
Depending on the dimensions of the object to be clamped by the first clamp arm and the second clamp arm,
By adjusting the engagement position of the other end of the connecting link in advance using the position adjustment section, it is possible to stably clamp a clamped object of any size.

On the other hand, according to the clamp device, the engagement state between the closing operation arm and the connecting link is released by the opening operation section from the clamped state on the clamped body. Then, when the object to be clamped was being clamped, the 3rd clamp formed by the first clamp arm, the second clamp arm, and the combined link of the closing operation arm and the connecting link.
The link shape is disassembled, and the first clamp arm and the second clamp arm are opened widely by the biasing force of the projectile body, and the clamped body is unclamped.

According to the present invention, it is possible to reliably and easily clamp or unclamp the object to be clamped by a one-touch operation of closing the closing operation arm or opening the opening operation section.

[Example] Fig. 1 is a partially cutaway front view showing the clamp device in the closed state according to an embodiment of the present invention, Fig. 2 is a front view showing the clamp device in the open state, and Fig. 3 is a front view showing the clamp device in the open state.
The figure is a perspective view showing how the above clamp device is used.
FIG. 4 is a sectional view taken along the - line in FIG. 1.

For example, as shown in FIGS. 1 and 3, the clamp device 10 is attached to a lintel 1 provided on a wall surface 11.
When fixing the long press 13 to the lintel 2, it is used to temporarily hold the long press 13 against the lintel 12. Note that the long press 13 is joined to the lintel 12 via an adhesive, and is further fixed to the lintel 12 by nailing.

The clamp device 10 includes a first clamp arm 14
The second clamp arm 15 is pin-coupled with a pin 16, and both arms 14 and 15 are opened and closed,
Grip part 1 pin-coupled to first clamp arm 14
A lintel 12 and a long pusher 13 as objects to be clamped are clamped between a grip portion 18 pin-coupled to the second clamp arm 16 and the second clamp arm 16 . 14A is an operation section.
As shown in FIGS. 1 to 3, the gripping parts 17 and 18 are made by bonding a cushion material 20 made of synthetic resin foam to the inner surface of an elongated base material 19 with an L-shaped cross section, and attaching the cushion material 20 to the object to be clamped. It can be clamped without causing damage.

The clamp device 10 includes a second clamp arm 15
A closing operation arm 22 is connected to the closing operation arm 22 via a pin 21. 22A is an operation section. The clamp device 10 also includes a connecting link 24 that is connected to the intermediate portion of the closing operation arm 22 via a pin 23 . The connecting link 24 is the fourth
As shown in the figure, the other end engaging portion 2 for the pin 23
5 is slidably and rotatably engaged with a groove-shaped slide guide section 26 provided along the operation section 14A of the first clamp arm 14, and the connection point 23 with the closing operation arm 22 is connected to the slide guide section. 26 to the connecting point 21 of the closing operation arm 22 and the second clamp arm 15, do not approach the connecting point 16 of the first clamp arm 14 and the second clamp arm 15 more than a certain level. It is designed to engage like this. The engagement between the closing operation arm 22 and the connecting link 24 is achieved through an engagement surface 27 provided at the intermediate portion of the closing operation arm 22;
This takes place between shoulders 28 on the connecting links 24.

Note that the closing operation arm 22 and the connecting link 2
The engagement of No. 4 was performed by directly bringing the engagement surfaces 27 and the shoulder portions 28 into contact with each other. The opening operation may be performed indirectly under a state in which the opening operation arm 32, which will be described later, is clamped.

The clamp device 10 includes a first clamp arm 14
A position adjustment screw 29 serving as a position adjustment section is screwed into the end of the operation section 14A. Position adjustment screw 29
are guided by the slide guide section 26 and the first clamp arm 14 and the second clamp arm 15
The other end of the connecting link 24 that moves away from the connecting portion 16 collides with the engaging portion 25, and the engaging portion 25
can be held at any position in the direction of movement.

The clamp device 10 includes a first clamp arm 14
An elastic body (tension spring) 30 is interposed between the second clamp arm 15 and the second clamp arm 15, and biases both arms 14 and 15 in a direction in which they are mutually opened.

The clamp device 10 includes an opening operation arm (opening operation section) 32 that is pin-coupled to the intermediate portion of the closing operation arm 22 via a pin 31 . 32A
is the operation section. The opening operation arm 32 includes a pressing portion 33 that comes into contact with the intermediate portion of the connecting link 24 . Further, a torsion spring 34 is provided around the pin 31 to bias the opening operation arm 32 toward the closing operation arm 22 side.

Hereinafter, the operation of the above embodiment will be explained.

According to the clamp device 10, when the first clamp arm 14 and the closing operation arm 22 are closed by grasping the first clamp arm 14 and the closing operation arm 22 to pull the closing operation arm 22 toward the first clamp arm 14, the closing operation arm 22 is closed. The connecting point 23 of the connecting link 24 is connected to the slide guide portion 2 of the connecting link 24.
6 and the connecting point 21 of the closing operation arm 22 with the second clamp arm 15, slightly passing over the straight line connecting the connecting point 25 of the closing operation arm 22 with the second clamp arm 15, and reaching the connecting point 16 of the first clamp arm 14 and the second clamp arm 15, The closing operating arm 22 and the connecting link 24 engage with each other. In this clamp device 10, the closing operation arm 22 and the connecting link 24 are assembled as described above.
When the two engage with each other, the other end engaging portion 25 of the connecting link 24 is held by the position adjustment screw 29 provided on the first clamp arm 14, whereby the first clamp arm 14, the second A stable three-link is formed by the clamp arm 15 and the combined link of the closing operation arm 22 and the connecting link 24, which are integrally engaged with each other,
The opening degrees of the grip part 17 of the first clamp arm 14 and the grip part 18 of the second clamp arm 15 are kept constant, and the lintels 12 to 13 as objects to be clamped are clamped between the grip parts 17 and 18.

Therefore, in the above-mentioned clamping device 10, when clamping a clamped object, the first clamp arm 14, the second clamp arm 15, and the combined link of the closing operation arm 22 and the connecting link 24 are used. The three-link shape formed by this differs depending on the position of the position adjustment screw 29 that holds the other end engaging portion 25 of the connecting link 24. Therefore, the first clamp arm 14 and the second
The position adjustment screw 29 is adjusted according to the size of the object to be clamped by the clamp arm 15.
By adjusting in advance the holding position of the other end of the connecting link 24, it is possible to stably clamp a clamped object of any size.

It should be noted that the bullet body 30 maintains the three-link shape described above when clamping the object to be clamped as described above.

On the other hand, according to the clamp device 10, the opening operation arm 32 can be pulled toward the connecting link 24 by, for example, grasping the first clamp arm 14 and the opening operation arm 32 from the state where the object to be clamped is clamped. When the opening operation is performed, the pressing part 33 of the opening operation arm 32 presses against the connecting link 24.
When the opening operation arm 3 is in contact with the middle part of the
2 is coupled to the closing operation arm 22 in the anti-closing operation direction. This results in
The connection point between the closing operation arm 22 and the connecting link 24 crosses over the straight line connecting the engagement point 25 of the connecting link 24 with the slide guide portion 26 and the connecting point 21 of the closing operation arm 22 with the second clamp arm 15, It reaches the opposite side of the connection point 16 between the first clamp arm 14 and the second clamp arm 15, and releases the engagement state between the closing operation arm 22 and the connecting link 24.
Therefore, when the object to be clamped is being clamped, the 3-piece clamp formed by the first clamp arm 14, the second clamp arm 15, and the combined link of the closing operation arm 22 and the connecting link 24 is The link shape is disassembled, and the first clamp arm 14 and the second clamp arm 15 are opened wide by the biasing force of the resilient body 30, and the clamped body is unclamped.

According to the embodiment described above, it is possible to reliably and easily clamp or unclamp the object to be clamped by a one-touch operation of closing the closing operation arm 22 or opening the opening operation arm 32.

Further, according to the clamping device 10, since the gripping parts 17 and 18 of the first clamp arm 14 and the second clamp arm 15 are made of the elongated base material 19, the clamping action can be applied to a long range of the object to be clamped. A single clamping device 1
0 makes it possible to clamp a long object to be clamped.

Further, according to the clamping device 10, the gripping parts 17 and 18 of the first clamp arm 14 and the second clamp arm 15 are provided in a pin-coupled state, so that the gripping parts 17 and 18 conform to the shape of the object to be clamped. It is possible to reliably clamp the object to be clamped in an automatically adapted clamping posture.

Further, according to the clamp device 10, since the constituent members such as the arms extend in the horizontal direction of the clamping area of the object to be clamped, when the object to be clamped is pressed for a long time, for example, the downward direction of the long press, etc. There is no risk of hitting the head of a construction worker moving under the long press.

[Effects of the Invention] As described above, the present invention connects the second clamp arm to the intermediate portion of the first clamp arm with a pin, opens and closes both arms, and connects the gripping portion of the first clamp arm with the second clamp arm. A clamping device for clamping a clamped object between the gripping portions of the second
a closing operation arm pin-coupled to the clamp arm; one end pin-coupled to the closing operation arm and the other end rotatably engaged with a slide guide provided on the first clamp arm; a connecting link that engages with the arm; a resilient body that is interposed between the first clamp arm and the second clamp arm and biases both arms in a direction to open them; and a resilient body that is provided on the slide guide section and that connects the link. A device comprising: a position adjustment section for adjusting the engagement position of the other end of the link; and an opening operation section provided on the closing operation arm for releasing the engagement between the closing operation arm and the connecting link. It is.

Therefore, the object to be clamped can be reliably and easily clamped or unclamped by a one-touch operation of closing the closing operation arm or opening the opening operation section.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing a clamp device in a closed state according to an embodiment of the present invention, FIG. 2 is a front view showing the clamp device in an open state, and FIG.
The figure is a perspective view showing how the above clamp device is used.
FIG. 4 is a sectional view taken along the - line in FIG. 1, and FIG. 5 is a side view showing a conventional example. DESCRIPTION OF SYMBOLS 10... Clamp device, 14... First clamp arm, 15... Second clamp arm, 17, 18... Gripping part, 22... Closing operation arm, 24... Connection link, 26... Slide guide part, 29... Position adjustment screw (position adjustment section), 30... projectile body, 32... opening operation arm (opening operation section).

Claims (1)

[Scope of Claims] 1. A second clamp arm is pin-coupled to the intermediate portion of the first clamp arm, and both arms are operated to open and close, and a cover is provided between the gripping portion of the first clamp arm and the gripping portion of the second clamp arm. A clamp device for clamping a clamp body, which includes a closing operation arm that is pin-coupled to a second clamp arm, one end of which is pin-coupled to the closing operation arm, and the other end that is rotated to a slide guide provided on the first clamp arm. a connecting link that is movably engaged and that engages with the closing operation arm during a closing operation; and a spring that is interposed between the first clamp arm and the second clamp arm and biases both arms in the direction of opening each other. a position adjustment part provided on the slide guide part to adjust the engagement position of the other end of the connection link; and a position adjustment part provided in the closing operation arm to release the engagement between the closing operation arm and the connection link. A clamp device comprising an opening operation section. 2. The clamping device according to claim 1, wherein the gripping portion of the first clamp arm and the gripping portion of the second clamp arm are pin-coupled to the respective arm portions.