JP2017110759A - Clamp device and clamp set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp device capable of easily clamping an object to be clamped.SOLUTION: A clamp device 1 includes a first holding body 10, a second holding body 12 journaled to the first holding body 10, a distance adjusting mechanism 18 arranged in such a manner that one end side can be rocked to the first holding body 10, and a lever body 17 journaled to the other end side of the distance adjusting mechanism 18. A pressing portion 173 is brought into pressure contact with a pressure receiving seat surface provided on a free end side of the second holding body 12 by turning operation of the lever body 17, and by the pressure contact, a first inner peripheral portion of the first holding body 10 and a second inner peripheral portion of the second holding body 12 are brought into pressure contact so that holding and fixing can be achieved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a clamp device that clamps a clamp object such as a single pipe or pipe, or a columnar member, and more particularly to a clamp device that can easily perform a clamping operation or work on the clamp object.

  A scaffold in a construction site is often constructed by clamping a plurality of cylindrical iron pipes with a clamp set. Such a clamp set is composed of a plurality of clamping devices. Each clamp device includes a clamp body including a first holding body and a second holding body that are pivotally hinged to each other for holding a pipe, and the first holding body and the first holding body. A male screw body, one end of which is pivotally attached to the first holding body, and a female screw body screwed near the tip of the other screw side of the male screw body. (For example, refer patent document 1). In this clamp device, after holding an iron pipe by a clamp body, the female pipe is fastened and screwed to the male screw body, whereby the iron pipe is pressed and clamped by the first and second holding bodies.

JP 2009-138851 A

  In the case of using the above-described clamp device, in the construction of a scaffold at a construction site, the work of tightening the female screw body with respect to the male screw body takes time, and thus there is a problem that work efficiency is deteriorated. Also, in the dismantling of the scaffold, in order to release the clamp state of the clamp device mounted on the iron pipe, it is necessary to unscrew and remove the female screw body screwed into the male screw body. And the work efficiency is further deteriorated.

  Then, an object of this invention is to provide the clamp apparatus etc. which make it easy to attach or detach with respect to a clamp target object.

  The present invention is for solving the above-mentioned problem, and a clamping device to which the present invention is applied has a first inner peripheral portion that can contact a part of the outer peripheral surface of the object to be clamped. And a second inner peripheral portion that is pivoted on one end side with respect to the first holding body and is capable of coming into contact with another part of the outer peripheral surface of the clamp object. A holding mechanism and a distance adjusting mechanism that is disposed at a free end side with respect to the pivoted portion and on the first holding body side so that one end side thereof is swingable with respect to the first holding body. And a lever body that is pivotally attached to the other end side of the distance adjusting mechanism, a pressing portion is provided in the vicinity of the pivoting location, and extends outward from the pressing portion side; And by pressing the lever body, the pressing portion is pressed against a pressure receiving seat surface provided on the free end side of the second holding body. The first and second inner peripheral portions are press-contacted to the outer peripheral surface of the clamp object by the press contact, and are configured to be capable of being held and fixed. To do.

  In relation to the clamp device, the distance adjusting mechanism is disposed so as to be swingable with respect to the first holding body side, and includes a swing portion configured to include an engagement portion, and the engagement portion. And an adjusting shaft portion that is engaged so as to be able to adjust the engagement position, and on which the lever body is pivotally mounted on the other end side.

  In relation to the clamping device, the engaging portion has a female screw portion, the adjusting shaft portion has a male screw portion, and the female screw portion and the male screw portion are screwed together so that they can be screwed together. The distance adjustment in the distance adjustment mechanism is performed by this screwing.

  In relation to the clamp device, a notch-like engaging portion into which the adjusting shaft portion can be inserted is formed near the free end of the second holding body.

  In relation to the clamp device, the pressing portion has a cam shape, and a cam mechanism is formed between the cam-shaped pressing portion and the pressure receiving seat surface, and the cam mechanism causes the second holding. The clamp object is held and fixed by the holder being displaced and / or deformed toward the first holder.

  In relation to the clamping device, the cam-shaped pressing portion has a cam top portion having a maximum distance from a pivot shaft of the pressing portion at an outer edge in contact with the pressure receiving seat surface, and the lever When the clamp object is held by a turning operation of the body, the cam top is stopped at a position further exceeding the position where the pressing force is maximum by approaching the pressure receiving seat surface. .

  In relation to the clamping device, the swinging portion is disposed inside the free end side of the first holding body.

  In relation to the clamping device, a swinging portion receiving recess for receiving the swinging portion is formed in the vicinity of the free end of the first holding body, and on both inner side surfaces of the swinging portion receiving recess. A pair of first projecting portions or a first drilling portion is provided, and the swinging portion is fitted with the pair of first projecting portions or the first drilling portion on both side surfaces thereof. A pair of second drilling portions or second projecting portions to be combined is provided, and the first projecting portion and the second drilling portion or the first drilling portion and the second projecting portion are provided. And the swinging part is swingable or rotatable by this engagement.

  In relation to the clamp device, the swinging portion is disposed on the outer peripheral surface side of the first holding body.

  In relation to the clamping device, the adjusting shaft portion has a male screw portion formed on an outer peripheral surface, and the lever body is directly or indirectly with respect to the female screw body having a female screw portion screwed with the male screw portion. The distance adjusting mechanism rotates the female screw body to change the screwing position between the female screw portion and the adjusting shaft portion, thereby holding the effective length of the adjusting shaft portion before holding and fixing. And / or is configured to be adjustable after holding and fixing.

  In relation to the clamping device, the first holding body and / or the second holding body has an inclined portion that is inclined outward or inward in the width direction thereof, and the inclined portion is The first holding body and / or the second holding body can be elastically deformed in a direction approaching / separating from the object to be clamped.

  In relation to the clamping device, the second holding body has an accommodating portion for accommodating the lever body on an outer peripheral portion.

  In relation to the clamping device, an interference portion that interferes with the pressing portion of the lever body is formed on an outer surface that abuts on the lever body in the vicinity of the notched engaging portion, and the interference portion is clamped during clamping. And the pressing portion interfere with each other to restrict detachment of the pressing portion from the interference portion.

  In relation to the clamp device, the adjusting shaft portion that engages with the engaging portion has a shape in which the rotation is limited in the engaging portion.

  In relation to the clamp device, the lever body has an extension portion, and is configured to be extendable in the longitudinal direction by displacement of the extension portion with respect to the lever body.

  In relation to the clamp device, the extension portion is hinged to the lever body.

  In relation to the clamping device, the extension portion is configured to be extendable by an expansion / contraction mechanism that is displaceably engaged with the inside of and / or outside of the lever body in a longitudinal direction of the lever body. It is characterized by that.

  The present invention includes the first clamping device according to any one of the above and the second clamping device, and the first clamp and the second clamp are rotatable or non-rotatable. A clamp set characterized by being connected to each other.

  According to the clamping device of the present invention, it is possible to achieve an excellent effect of easily clamping an object to be clamped.

FIG. 1 shows a clamping device according to a first embodiment of the present invention. FIG. 2 shows how the clamping device clamps the iron pipe. FIG. 3 shows how an iron pipe is clamped by a clamping device. It is FF sectional drawing of FIG.2 (b) in a clamp apparatus. FIG. 5 shows a state where the adjusting shaft portion is attached to the first free end portion via the swinging portion. FIG. 6 shows a state where the engaging portion and the adjusting shaft portion are fitted. FIG. 7 shows a clamping device according to the second embodiment of the present invention. FIG. 8 shows an application example of the clamping device. FIG. 9 shows a clamping device according to a third embodiment of the present invention. 10 (a) and 10 (b) show an application example of the clamping device, FIG. 10 (c) shows a side sectional view of the female screw body or the rocking body, and FIG. 10 (d) shows FIG. 10 (c). The DD arrow sectional drawing of is shown. FIG. 11 shows a clamping device according to a fourth embodiment of the present invention. FIG. 12 shows an application example of the clamping device. FIG. 13 (a) shows a clamp device according to a fifth embodiment of the present invention, FIG. 13 (b) is a cross-sectional view taken along line BB in FIG. 13 (a), and FIG. It becomes CC arrow sectional drawing of 13 (a). 14A is a perspective view and FIG. 14B is a cross-sectional view of a clamp set as an application example of the clamp device according to the embodiment of the present invention. 15A is a perspective view and FIG. 15B is a cross-sectional view of a clamp set as an application example of the clamp device in the embodiment of the present invention.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
<About the first embodiment>

  FIG. 1 shows a clamp device 1 according to a first embodiment of the present invention. FIG. 1A is a perspective view of the clamping device 1. FIG. 1B is a side view of the clamping device 1. FIG. 2 shows how the clamp device 1 clamps the iron pipe 91. FIG. 2A is a perspective view showing a state in which the clamp device 1 clamps the iron pipe 91. FIG. 2B is a side view showing how the clamp device 1 clamps the iron pipe 91. Hereinafter, description will be made with reference to FIG. In addition, although the single clamping device 1 is illustrated here, as shown in FIGS. 14 and 15, a plurality of irons are used as a clamp set 500 in which a plurality of clamping devices 1 are connected in a fixed or relatively rotatable manner. It may be a structure that clamps pipes (including various angular relationships such as parallel to each other, perpendicular to each other, or inclined to each other) at the same time.

  The clamp device 1 is configured to clamp the clamp object 90 or to be clamped and fixed to the clamp object 90. For example, the clamp device 1 pivots the first holding body 10, the second holding body 12, the engagement portion 13, and one end (rear end) side of the first holding body 10 and the second holding body 12. A connecting portion 14, a lever mechanism 17 and a distance adjusting mechanism 18 are provided. The distance adjustment mechanism 18 includes an adjustment shaft portion 15 and a swing portion 16.

  For example, the clamping device 1 is assumed to clamp a cylindrical iron pipe of a scaffold assembled at a construction site. Therefore, in the following, the case where the clamp object 90 is a cylindrical iron pipe 91 is illustrated as an example. However, the clamp object 90 is not limited to the cylindrical iron pipe 91 and may be a member having another shape. There may be. The case of clamping a member having another shape is also included in the scope of the present invention.

  As shown in FIGS. 2 (a) and 2 (b), the first holding body 10 supports the iron pipe 91 by its first inner peripheral portion. As shown in FIGS. 1A and 1B, the first holding body 10 includes a first main body portion 101 and a first free end portion 102. The first main body 101 has a partial arc shape close to a semicircular arc when viewed from the side, and directly supports the iron pipe 91 by inner peripheral surfaces (first inner peripheral portions) 106 and 107 of the partial arc. .

  The cross section in the width direction of the first main body 101 has a U shape or a U shape. Accordingly, the first main body 101 is composed of upright portions 103 and 104 corresponding to both sides of the U-shape or U-shape, and a bottom surface portion 105 corresponding to the bottom of the U-shape or U-shape. . The inner peripheral surfaces 106 and 107 of the first main body 101 correspond to the protruding edges of the upright portions 103 and 104.

  The first free end 102 constitutes the free end of the first holding body 10. Specifically, the first free end portion 102 projects outward in the radial direction of the partial arc in the vicinity of the free end of the first main body portion 101. The cross section in the width direction of the first free end portion 102 is also U-shaped or U-shaped, like the first main body portion 101. Therefore, the first free end portion 102 also has upright portions 102a and 102b and a bottom surface portion 102c on both sides corresponding to a U-shape or a U-shape. Furthermore, the first free end portion 102 has an upright portion 102d that constitutes the outermost radial end surface. The adjusting shaft portion 15 is supported in the first free end portion 102 so as to be rotatable about a shaft 108 extending in the width direction of the first holding body 10 (first free end portion 102). Details of this support structure will be described later.

  As shown in FIGS. 2A and 2B, the second holding body 12 holds the iron pipe 91 in cooperation with the first holding body 10. The 2nd holding body 12 is comprised with the 2nd main-body part 121 and the 2nd free end part 122, as shown to Fig.1 (a) and a figure.

  Similarly to the first main body portion 101, the second main body portion 121 has a partial arc shape close to a semicircular arc when viewed from the side, and inner peripheral surfaces (second inner peripheral portions) 126 and 127 of the partial arc shape. The iron pipe 91 is directly supported by The cross section in the width direction of the second main body 121 has a U shape or a U shape. Therefore, the second main body 121 has upright portions 123 and 124 corresponding to both sides of the U shape or the U shape. The inner peripheral surfaces (inner peripheral edges) 126 and 127 correspond to the protruding edges of the upright portions 123 and 124.

  The second free end 122 constitutes the free end of the second holding body 12. The second free end 122 protrudes outward in the radial direction of the partial arc in the vicinity of the free end of the second main body 121. Further, the cross section in the width direction of the second free end portion 122 has a U shape or a U shape. Therefore, the 2nd free end part 122 has standing part 122a and 122b and the bottom face part 122c on both sides corresponding to a U-shape or U-shape. Furthermore, the second free end portion 122 has an upright portion 122d that constitutes the outermost end surface in the radial direction. The second free end portion 122 is provided with an engaging portion 13, and the adjusting shaft portion 15 that swings in the longitudinal direction of the second holding body 12 is inserted into the engaging portion 13 so as to freely advance and retract. Is done. The engaging portion 13 is opened in the vicinity of the center in the width direction of the upright portion 122d, and extends therefrom toward the center in the width direction of the bottom surface portion 122c.

  The connecting portion 14 is capable of axially rotating the rear end (opposite side to the free end) 109 of the first holding body 10 and the rear end (opposite side to the free end) 129 of the second holding body 12. To be connected. The rotation of the shaft is performed around an opening / closing shaft 143 extending in the width direction of the first holding body 10 and the second holding body 12. Specifically, the connecting portion 14 includes a first holding body shaft hole 141, a second holding body shaft hole 142, and an opening / closing shaft 143.

  The first holding body shaft hole 141 is provided at the rear end 109 in the longitudinal direction of the first holding body 10 (first main body portion 101). The first holding body shaft hole 141 extends in the width direction of the first holding body 10 (first main body portion 101), and is formed on both side surfaces of the rear end 109 of the first holding body 10 (first main body portion 101). To penetrate.

  The 2nd holding body axial hole 142 is provided in the rear end 129 of the longitudinal direction of the 2nd holding body 12 (2nd main-body part 121). The second holding body shaft hole 142 extends in the width direction of the second holding body 12 (second main body portion 121), and the both side surfaces of the rear end 129 of the second holding body 12 (second main body portion 121). To penetrate.

  The opening / closing shaft 143 is inserted into the first holding body shaft hole 141 and the second holding body shaft hole 142. And the 2nd holding body 12 and the 1st holding body 10 are fixed in the aspect which can be opened and closed by using the opening-and-closing axis | shaft 143 as an axis | shaft. That is, as shown in FIG. 1B, the second holding body 12 approaches the inside 110 of the first holding body 10 (in the direction of arrow A) and the first holding with the opening / closing shaft 143 as an axis. It can be opened and closed in a direction away from the inside 110 of the body 10 (arrow B direction).

  As described above, the second holding body 12 and the first holding body 10 open and close using the connecting portion 14 as a hinge. Accordingly, when the second holding body 12 is relatively rotated in the direction approaching the inside 110 of the first holding body 10 (arrow A direction), the second holding body 12 causes the inside 110 of the first holding body 10 to move. close up. On the other hand, when the second holding body 12 is relatively rotated in a direction away from the inside 110 of the first holding body 10 (arrow B direction), the second holding body 12 causes the inside 110 of the first holding body 10 to move. open.

  In the closed state, the inner peripheral surfaces 106 and 107 of the first main body 101 and the inner peripheral surfaces 126 and 127 of the second main body 121 have a substantially ring shape that approximates the shape of a cylindrical iron pipe. It is formed. However, the shapes of the inner peripheral surfaces 106 and 107 of the first main body 101 and the inner peripheral surfaces 126 and 127 of the second main body 121 are not limited to the above shapes. Various shapes according to the shape of the clamping object 90 are included in the present invention. That is, since the clamp object 90 is clamped by being sandwiched between the first main body part 101 and the second main body part 121, various first main body parts 101 according to the shape of the clamp target object 90 and The shape of the 2nd main-body part 121 is assumed. All such shapes are included in the present invention.

<About the distance adjustment mechanism>
The distance adjusting mechanism 18 is disposed such that one end side thereof can swing with respect to the first free end portion 102 of the first holding body 10. Specifically, the vicinity of one end of the adjusting shaft portion 15 of the distance adjusting mechanism 18 (which is not limited to the end depending on the length of the adjusting shaft portion) can swing within the first free end portion 102. Is swingably held by a swinging portion 16 disposed on the head. The vicinity of one end of the adjusting shaft portion 15 and the swinging portion 16 are engaged with each other by an engaging portion. The oscillating portion 16 is attached in the first free end portion 102 in such a manner that the oscillating portion 16 can rotate about its own virtual center axis 161 as a rotation axis. The imaginary central axis 161 extends in the width direction of the first holding body 10 (first main body portion 101) and is positioned in the vicinity of the approximate center in the first free end portion 102. The virtual center axis 161 and the axis 108 are concentric.

  On the outer peripheral surface of the adjusting shaft portion 15, for example, a male screw portion 151 having a male screw groove is formed. Further, the swinging portion 16 includes an engaging portion that can be engaged with the adjusting shaft portion 15. The engaging portion has a through hole 162 that passes through a cylindrical peripheral surface in a direction perpendicular to the virtual center axis 161 (that is, the diameter direction). A female screw portion having a female screw groove that can be screwed with the male screw portion 151 is formed on the inner peripheral surface of the through hole 162. When the adjusting shaft portion 15 is inserted into the through-hole 162 and screwed, the adjusting shaft portion 15 engages with the swinging portion 16. Accordingly, the relative position of the adjusting shaft portion 15 and the swinging portion 16 is variable (adjustable) by this screwing structure, and as a result, the first free end portion 102 and the second free end portion 122 are suspended. The effective length of the adjusting shaft portion 15 can be freely adjusted. In addition, although the engagement aspect of the adjusting shaft part 15 and the rocking | swiveling part 16 in the clamp apparatus 1 is an aspect using a screw mechanism, it is not limited to this, Even if it is another engagement aspect Good.

  With the above configuration, the adjusting shaft portion 15 is attached in the first free end portion 102 in a swingable manner with the shaft 108 in the first free end portion 102 as a swing shaft. The axis | shaft 108 is extended in the direction suspended toward the 2nd free end part 122 side from the inside of the 1st free end part 102. FIG. Then, the adjusting shaft portion 15 approaches the inner peripheral surfaces 106 and 107 of the first holding body 10 (in the direction of arrow C in FIG. 1B) and the inner peripheral surfaces 106 and 107 of the first holding body 10. Oscillation is possible in a direction away from the direction (the direction of arrow D in FIG. 1B).

  Further, the distance adjusting mechanism 18 has a length (that is, a suspension) of the adjusting shaft portion 15 extending from the attachment portion of the adjusting shaft portion 15 at the free end of the first holding body 10 to the connecting portion of the adjusting shaft portion 15 and the lever mechanism 17. (Distance) can be adjusted. In the following, the length of the adjusting portion 15 extending from the attachment portion of the adjusting shaft portion 15 at the free end of the first holding body 10 to the connecting portion of the adjusting shaft portion 15 and the lever mechanism 17 will be referred to as the effective of the adjusting portion 15. Called length. The effective length of the adjusting shaft portion 15 corresponds to the length L as shown in FIG. The effective length of the adjusting shaft portion 15 also varies depending on the diameter of the iron pipe to be clamped. For example, when an iron pipe having a diameter shorter than the diameter of the iron pipe 91 shown in FIG. 2B is to be clamped by the clamp device 1, the effective length L of the adjusting shaft portion 15 shown in FIG. 2B is adjusted to be shorter. There is a need to.

  Conventionally, the effective length of the adjusting shaft portion 15 has been adjusted by tightening a nut with respect to a tightening bolt after the iron pipe is held by the second holding body. That is, conventionally, the clamping operation and the adjustment of the effective length of the adjusting shaft portion 15 are performed by tightening the nut with respect to the tightening bolt. On the other hand, in the present embodiment, the effective length of the adjusting shaft portion 15 can be adjusted in advance by the distance adjusting mechanism 18. For example, in the case of using an iron pipe 91 having the same diameter when constructing a scaffold, if the effective length of the adjusting shaft portion 15 is adjusted in advance by the distance adjusting mechanism 18, the lever mechanism 17 can be clamped by one-touch operation. Can be achieved. Also from this point, the clamping device 1 in the present embodiment can greatly improve the working efficiency.

  In order to shorten the effective length by the distance adjusting mechanism 18, when the adjusting shaft portion 15 is screwed into the female screw portion of the through-hole 162, one end portion of the adjusting shaft portion 15 becomes the first free end portion 102. It protrudes outward from the hole 111 provided in the bottom surface (see FIG. 2B). With this hole 111, the adjustment range of the effective length of the adjusting shaft portion 15 can be expanded without being obstructed by the bottom surface of the first free end portion 102.

  Moreover, it is preferable that the pitch in the external thread part 151 in the said adjustment shaft part 15 and a corresponding internal thread part is a pitch narrower than the pitch of the screw defined by JIS specification. This is because the effective length of the adjusting shaft portion 15 can be finely adjusted.

  <About the lever mechanism>

  The lever mechanism 17 is pivotally attached to the other end side of the distance adjusting mechanism 18, that is, in the vicinity of the other end portion of the adjusting shaft portion 15 (which is not limited to the end portion depending on the length of the adjusting shaft portion). A shaft hole 152 is provided at the upper end of the adjusting shaft portion 15. The shaft hole 152 is a through hole penetrating in a direction perpendicular to the axis of the adjusting shaft portion 15 (that is, the diameter direction). A shaft hole 171 is also provided near the base end of the lever mechanism 17. The vicinity of the lower end of the lever mechanism 17 is disposed at the upper end of the adjusting shaft portion 15 so that the pivot 172 passes through the shaft hole 152 and the shaft hole 171. Then, the pivot shaft 172 is fixed to the lever mechanism 17 and the adjusting shaft portion 15 so that the lever mechanism 17 can rotate about the pivot shaft 172.

  As shown in FIG. 1B, after the iron pipe 91 is sandwiched between the first holding body 10 and the second holding body 12, the lever mechanism 17 is moved toward the second holding body 12 (first When the second holding body 12 is rotated (tilted) in the direction of the arrow C, which is the longitudinal direction of the second holding body 12, the pressing portion 173 of the lever mechanism 17 formed around the pivot 172 causes the second holding body 12 to move to the first holding body. It acts to hold down to the 10 side. Thereby, the iron pipe 91 is clamped to the clamping device 1. This state is called a clamped state.

  The lever mechanism 17 includes a pressing portion 173 that constitutes a member around the pivot 172 at the proximal end portion, and a lever body 174 that extends outward from the pressing portion 173. As shown in FIG. 3A, the iron pipe 91 is moved to the first holding body 10 and the second holding body 12 in a state where the lever mechanism 17 is opened (a state where the lever mechanism 17 is swung away from the iron pipe 91). Then, the adjusting shaft portion 15 is rotated and inserted into the engaging portion 13. As a result, the base end of the lever mechanism 17 is disposed on the outer peripheral surface 129 of the second free end portion 122 (the free end outer peripheral surface of the second holding body 12). This state is a state in which the iron pipe 91 is held between the first holding body 10 and the second holding body 12 and is in an unclamped state. Hereinafter, this state is referred to as a holding (holding) state in which the iron pipe 91 is held.

  When the outer end (the lever body 174 side) of the lever mechanism 17 is rotated (tilted) in the direction of arrow E toward the main body outer peripheral surface 130 of the second holding body 12 in the clamped state, the second holding body 12 is moved to the lever. It is pushed toward the first holding body 10 by a predetermined portion of the mechanism 17. Thereby, the iron pipe 91 will be in a clamped state.

  The pressing portion 173 is realized by a plate cam, for example. The pressure-receiving seat surface formed on the outer peripheral surface of the second free end portion 122 serves as a cam follower that operates corresponding to the operation of the pressing portion 173.

  A cam top 175 having a maximum distance from the pivot 172 of the cam is formed in a part of the pressing portion 173 pressed against the second free end 122. The locus R of the cam top portion 175 when the pressing portion 173 rotates interferes with the outer peripheral surface 129 of the second free end portion 122 as shown in FIG. 3A and FIG. 129 is pushed inward (longitudinal direction of the adjusting shaft portion 15). Therefore, when the pressing portion 173 is rotated, the cam top portion 175 pushes the predetermined region on the outer peripheral surface 129 of the second free end portion 122 and the periphery thereof toward the first holding body 10.

  Further, as shown in FIGS. 3A and 3B, the locus R of the cam top 175 has the largest amount of interference at the axis 153 of the adjusting shaft portion 15. Accordingly, the cam top portion 175 has the maximum pressing force to the second holding body 12 where it coincides with the axis 153 of the adjusting shaft portion 15.

  Accordingly, in conjunction with the swinging (tilting) of the lever body 174 in the direction of arrow E, the force by which the cam top 175 pushes the outer peripheral surface 129 of the second free end 122 gradually increases, and the axis of the adjusting shaft 15 It reaches its maximum at 153, and beyond that, it gradually gets smaller.

  Thereafter, when the lever body 174 comes into contact with the outer peripheral surface of the second holding body 12, a final reaching point is reached where the cam top 175 cannot move any further. When the pressing force of the pressing portion 173 at the final reaching point is defined as the final reaching point pressing force, it is equal to or less than the maximum pressing force, preferably smaller than the maximum pressing force. That is, in this embodiment, after the cam top portion 175 exceeds the position where the pressing force pressing the outer peripheral surface 129 of the second free end portion 122 is maximized, the iron portion 173 is further rotated by a predetermined angle θ. The pipe 91 is clamped.

  In this way, if the cam top 175 reaches the final point beyond the position where the maximum pressing force is applied to the outer peripheral surface 129 of the second free end 122, the clamp state is easily released. You do n’t have to. This is because it is necessary to apply a large force corresponding to the maximum pressing force to the lever mechanism 17 again in order to release the clamped state.

  As shown in FIG. 3B, in the clamped state, the lever body 174 is accommodated in the groove-shaped accommodation portion 131 provided on the outer peripheral surface of the second holding body 12. As shown in FIG. 3B, the length of the lever body 174 in the lever mechanism 17 is preferably set so that the tip (protruding end) does not protrude from the rear end in the longitudinal direction of the second main body 121. In order to improve the workability, when it is desired to make the lever body 174 longer, the lever body 174 expands and contracts (see FIG. 12) or is folded (see FIG. 11), so that the longitudinal direction of the second main body 121 is increased. Do not protrude from the rear edge. If it does in this way, a worker and goods can contact lever body 174, and the state where a clamp state will be canceled can be controlled.

  Furthermore, as shown in FIG. 3B, it is preferable that 50% or more of the thickness of the lever body 174 is accommodated in the accommodating portion 131 in the clamped state. In this way, it is possible to prevent the lever body 174 from rotating reversely due to the outer surface of the lever body 174 in the lever mechanism 17 being caught by some obstacle.

  Furthermore, in the present embodiment, as shown in FIG. 3B, an interference portion 122 </ b> A that engages (interferences) the clamped lever body 174 protrudes on the outer surface of the second free end portion 122. Preferably it is formed. In this way, in the clamped state, it is possible to restrict the pressing portion 173 and the interference portion 122A from being engaged, and the adjusting shaft portion 15 from the notch portion 13 from being separated outward. On the other hand, the interference portion 122A is set to a height that does not interfere with each other when the lever body 174 enters the outer surface of the second free end portion 122 in the sandwiched state shown in FIG.

  As described above, the clamping device 1 has the pressing portion 173 in the form of a cam only by one-touch operation of the lever mechanism 17 after the iron pipe 91 is clamped between the first holding body 10 and the second holding body 12. Can be rotated. The second holding body 12 is displaced and / or deformed toward the first holding body 10 by this cam mechanism, so that the iron pipe 91 can be in a clamped state. Conventionally, after holding the iron pipe with the second holding body 12, the clamp device 1 is only operated by one-touch operation of the lever mechanism 17, whereas the nut is clamped by tightening the nut against the tightening bolt. Therefore, the working efficiency can be greatly improved.

  When releasing the clamped state, the lever mechanism 17 may be rotated (tilted) in a direction away from the second holding body 12 (arrow D direction) as shown in FIG. In this way, the pressing portion 173 of the lever mechanism 17 formed around the pivot 172 does not press the second holding body 12 toward the first holding body 10 side. Therefore, the clamping device 1 can release the clamping state only by a one-touch operation of the lever mechanism 17. Conventionally, after the iron pipe is held by the second holding body, the nut is loosened with respect to the tightening bolt to release the clamped state. On the other hand, the clamp device 1 performs the one-touch operation of the lever mechanism 17. Since the clamped state can be released only by this, work efficiency can be greatly improved.

<Inclined part>
4 is a cross-sectional view taken along the line FF in FIG. In FIG. 4, the clamp device 1 is in a clamped state. The second holding body 12 includes a center portion 132 in the width direction and standing portions 123 and 124 that are provided on both sides of the center portion 132 in the width direction and extend in the direction of the object to be clamped (hereinafter, defined as the clamp direction). Have. As shown in FIG. 4, the central portion 132 is provided with a concave portion 134 that is recessed in the clamping direction (iron pipe direction) at the center. The concave portion 134 corresponds to the accommodating portion 131 that accommodates the lever body 174.

  The standing parts 123 and 124 of the second holding body 12 are inclined toward the outer side in the width direction of the second holding body 12 (or the inner side thereof) from the middle of the clamping direction. The inclined portions are referred to as inclined portions 123a and 124a, respectively. As a result, the inclined portions 123a and 124a are inclined outward in the width direction of the second holding body 12 in the clamping direction. In addition, the inclined portions 123a and 124a form an inclination angle α with respect to the width direction reference line 132a (the axis of the iron pipe) of the central portion 132. In addition, the inclined portions 123 a and 124 a extend along a partial arc shape in side view of the second holding body 12.

  The inclined portions 123a and 124a have a property as an elastic body such as a spring. That is, the inclined portions 123a and 124a can be elastically deformed in the clamping direction of the second holding body 12 (or the radial direction of the partial arc) when receiving an external force.

  When an iron pipe is sandwiched between the first holding body 10 and the second holding body 12, the first holding body 10 supports the iron pipe with the inner peripheral surfaces 106 and 107 in the upright portions 103 and 104. On the other hand, the second holding body 12 supports the iron pipe with the inner edges 123b and 124b in the inclined portions 123a and 124a.

  In this state, when the outer peripheral surface 129 of the second free end portion 122 is pressed by the action of the pressing portion 173 of the lever mechanism 17, the inclined portions 123a and 124a are elastically deformed. As a result, the inclined portions 123a and 124a gradually decrease in the inclination angle α, and approach the state where the inclination angles at the inclined portions 123a and 124a are close to 0 °, as indicated by the dotted lines in FIG. In some cases, the iron pipe may be supported by the bottom surfaces 123c and 124c of the inclined portions 123a and 124a.

  As described above, the second holding body 12 pressed by the pressing portion 173 can move by an amount corresponding to the elastic deformation of the inclined portions 123a and 124a by the elastic action of the inclined portions 123a and 124a. Thereby, the pressing unit 173 can perform the pressing operation as described in FIG. In the present embodiment, the case where the inclined portions 123a and 124a are formed on the second holding body 12 side and elastically deformed is illustrated, but the present invention is not limited to this, and the first holding body 10 side is provided. An inclined portion may be formed.

  FIG. 5A is a perspective view showing a state in which the adjusting shaft portion 15 is attached to the first free end portion 102 via the swinging portion 16. 5B to 5E show a procedure for attaching the adjusting shaft portion 15 to the first free end portion 102 via the swinging portion 16. 5 (b) to 5 (e) depict the region G in FIG. 5 (a) in a simplified manner.

  As shown in FIG. 5A, the first free end portion 102 is formed with a swinging portion receiving recess 102A capable of storing the swinging portion 16, and on both side surfaces inside the swinging portion receiving recess 102A. A pair of first projecting portions 112 having a cylindrical shape is provided. On the other hand, a pair of second drilling portions 163 corresponding to the first projecting portions 112 are provided on both side surfaces of the swinging portion 16. The second drilling portion 163 is a groove shape that is scraped by a predetermined thickness from the surfaces of both sides of the swinging portion 16, and extends at least radially outward from the center of the swinging portion 16 to the outer peripheral surface. Has reached. Accordingly, the outline of the second drilling portion 163 is substantially U-shaped. The second perforated portion 163 engages with the first convex portion 112.

  As shown in FIG. 5B, the swinging portion 16 is moved to the first free position so that the U-shaped opening 164 (opening formed in the peripheral surface) of the second drilling portion 163 faces the cylindrical protrusion 112. Inserting into the end portion 102, the second perforated portion 163 is fitted to the first convex portion 112. Next, as shown in FIG. 5 (c), the U-shaped bottom surface of the second perforated portion 163 is used as a guide surface, and the swinging portion 16 is inverted 180 ° about the first convex portion 112.

  When the swinging portion 16 is reversed, the U-shaped opening 164 of the second drilling portion 163 faces the first body portion 101 side as shown in FIG. Thereafter, the adjusting shaft portion 15 is inserted, and the swinging portion 16 and the adjusting shaft portion 15 are screwed together as shown in FIG. When the oscillating portion 16 and the adjusting shaft portion 15 are screwed together, the oscillating range of the adjusting shaft portion 15 is limited by the upright portion 102d and the second holding body 12, and as a result, the oscillating portion 16 also rotates. Limited range. For this reason, the rocking | swiveling part 16 inverts, cannot return to the state of FIG.5 (c), and cannot remove | deviate from the protrusion 102. FIG. If the adjusting shaft portion 15 is removed from the swinging portion 16, the swinging portion 16 can be easily disassembled by inverting it to the state shown in FIG.

  Here, the case where the first protruding portion 112 is provided on the first free end portion 102 side and the second perforated portion is provided on the swinging portion 16 side is illustrated, but the present invention is not limited to this, and the first The first perforated portion may be provided on the free end portion 102 side, and the second convex portion may be provided on the swinging portion 16 side. Alternatively, the swinging portion 16 is pivotally supported using a pivot member. You may comprise as follows.

<About the shape of the adjusting shaft and the engaging portion>
FIG. 6A is a perspective view showing a state where the engaging portion 13 and the adjusting shaft portion 15 are engaged. FIG. 6C is a plan view showing a state where the engaging portion 13 and the adjusting shaft portion 190 are engaged. FIG. 6D is a plan view showing a state where the engaging portion 13 and the adjusting shaft portion 191 are engaged.

  As shown in FIG. 6A, it is preferable to perform clamping in a state where the width direction W of the second holding body 12 and the extending direction of the pivot 172 of the lever mechanism 17 coincide. This is because the longitudinal direction of the lever mechanism 17 can be along the longitudinal direction N of the second holding body 12. On the other hand, depending on the operator, as shown in FIG. 6B, the length direction N of the second holding body 12 and the extending direction of the pivot 172 of the lever mechanism 17 may be clamped. . Even in this case, there is no problem with the clamp itself, but since the tip of the lever mechanism 17 protrudes, there is a possibility that the clamp state is released by contact with some external member.

  Therefore, for example, as shown in FIG. 6 (c), the adjusting shaft portion 190 is limited to the engagement portion with the engaging portion 13, and the diameter or diagonal distance in the cross section is an elliptical or oval cross section. Different (non-constant) shapes can be used. Moreover, as shown in FIG.6 (d), the adjustment shaft part 191 can make the cross section into shapes, such as a rectangle, only in the engaging part with the insertion part 13. As shown in FIG. If it does in this way, after making the adjustment shaft part 190 and the insertion part 13 engage, both cannot rotate relatively. Therefore, if the longitudinal direction of the lever mechanism 17 and the longitudinal direction N of the second holding body 12 are matched in the state of FIGS. 6C and 6D, the operator mistakenly operates the lever mechanism 17. It is possible to avoid the state of clamping while protruding at right angles.

  In addition, the cross-sectional shape of the engaging portion with the engaging portion 13 in the adjusting shaft portion is not limited to an elliptical shape or a rectangular shape. Other shapes may be used as long as the rotation of the adjusting shaft portion can be regulated.

<About the second embodiment>
FIG. 7 shows the clamping device 2 in the second embodiment of the present invention. FIG. 7A is a perspective view of the clamp device 2. FIG. 7B is a side view of the clamp device 2.

  The clamping device 2 clamps an object after clamping, for example, the 1st holding body 20, the 2nd holding body 22, the engaging part 23, the connection part 24, and the adjustment part 25. And a lever mechanism 27 and a distance adjusting mechanism 28.

  The first holding body 20, the second holding body 22, the engaging portion 23, the connecting portion 24, the adjusting shaft portion 25, and the lever mechanism 27 in the clamping device 2 are the first holding in the clamping device 1. The holding body 10, the second holding body 12, the engaging portion 13, the connecting portion 14, the adjusting shaft portion 15, and the lever mechanism 17 are the same as those already described above. Is omitted.

  The difference between the clamp device 2 and the clamp device 1 is a distance adjusting mechanism 28. The distance adjustment mechanism 28 includes, for example, a nut member (female screw body) 281 and a hole 282. The hole 282 is provided on the bottom surface of the first free end 202 constituting the free end of the first holding body 20. The adjusting shaft portion 25 passes through the hole 282 and is screwed with the nut member 281 on the outer peripheral surface side of the first free end portion 202. In addition, one of the seating surfaces of the nut member 281 and the seating surface on the bottom side of the first free end 202 of the first holding body 20 that receives the nut member 281 is a convex curved (sphere) seating surface, and the other It is preferable that the seating surface is a concave curved (spherical) seating surface. In this way, the nut member 281 swings smoothly, and the contact area between these seating surfaces is almost constant regardless of the contact angle, so that a stable surface pressure can be secured and repeated use. In addition, durability in use over a long period of time can be improved. Of course, the seating surface of the nut member 281 and / or the seating surface of the first free end 202 of the first holding body 20 facing the nut member 281 are convex curved (for example, convex partial sphere) shaped seating surfaces. However, within a certain range, an appropriate frictional force may be generated while flexibly responding to the swinging of the nut member 281.

  Next, the clamping operation of the clamping device 2 will be described below, and the adjustment mode of the distance adjusting mechanism 28 will also be described. First, the iron pipe is held between the first holding body 20 and the second holding body 22.

  Here, the adjusting shaft portion 25 is fitted into the engaging portion 23. Before and after this, the nut member 281 is rotated to adjust the effective length of the adjusting shaft portion 25. Thereafter, the lever mechanism 27 is tilted toward the second holding body 12. Thereby, the iron pipe is clamped in the clamping device 2.

  In addition, when the iron pipe clamp state is weak in the clamp device 2, the nut member 281 is further tightened with a jig such as a wrench in the clamp state, and the effective length is adjusted afterwards. Unlike the clamp device 1, the clamp device 2 can clamp the iron pipe and then tighten the nut member 281 to make it a stronger iron pipe clamp state.

  As an application example of the second embodiment, as shown in FIG. 8, the swinging portion 16 in which the female screw portion is not formed in the through hole is accommodated in the first free end portion 202. Thus, the adjusting shaft portion 25 and the nut member (female screw body) 281 can be screwed together on the outer side in the axial direction than the swinging portion 26 while the adjusting shaft portion 25 is held so as to be swingable indirectly. . The turning operation of the nut member 281 can be performed by forming a notch or an opening on the side surface of the first free end 202 and allowing the nut member to be operated through this.

<About the third embodiment>
FIG. 9 shows a clamp device 3 according to a third embodiment of the present invention. The clamp device 3 clamps an object after clamping, for example, the 1st holding body 30, the 2nd holding body 32, the engaging part 33, the connection part 34, and the adjustment part 35. And a lever mechanism 37 and a distance adjusting mechanism 38.

  The first holding body 30, the second holding body 32, the engaging portion 33, the connecting portion 34, the adjusting shaft portion 35, and the lever mechanism 37 in the clamping device 3 are the first holding in the clamping device 1. The holding body 10, the second holding body 12, the engaging portion 13, the connecting portion 14, the adjusting shaft portion 15, and the lever mechanism 17 are the same as those already described above. Is omitted.

  The difference between the clamp device 3 and the clamp device 1 is a distance adjusting mechanism 38. The distance adjusting mechanism 38 includes, for example, a male screw part 351 formed on the outer peripheral surface of the adjusting shaft part 35 and a female screw body 371 having a female screw groove 373 provided in the lever mechanism 37. The female screw body 371 is provided at the base end portion of the lever mechanism 37 so as to be swingable by a rotation axis (pivot axis) perpendicular to the axis. The female screw body 371 has a through hole 372, and a female screw groove 373 is formed on the inner peripheral surface thereof. The female screw groove 373 is screwed with the male screw portion 351.

  Since the female screw body 371 is provided at a connecting portion between the lever mechanism 37 and the adjusting shaft portion 35, the lever mechanism 37 is swingably held with respect to the female screw body 371.

  Therefore, if the lever mechanism 37 is rotated and the screwing position between the adjusting shaft portion 35 and the lever mechanism 37 is changed, the effective length of the adjusting shaft portion 35 can be adjusted. In this case, the adjusting shaft portion 35 and the swinging portion 16 may have a conventional integrated structure.

  In the above embodiment, the case where the rotation shaft is directly provided between the lever mechanism 37 and the female screw body 371 is illustrated, but the present invention is not limited to this. For example, as shown in FIG. 10 (a), an oscillating body 376 having a passage hole 377 is disposed at a connecting portion between the lever mechanism 37 and the adjustment shaft portion 35, and the adjustment portion inserted into the passage hole 377. A female screw body 371 independent of the rocking body 376 may be screwed into the protruding end of the 35 male screw portion 351. The rocking body 376 is provided at the base end portion of the lever mechanism 37 so as to be rockable by a rotation axis (pivot axis) perpendicular to the axis. In this way, even after the lever mechanism 37 is operated and the iron pipe is held by the first holding body and the second holding body, the holding force can be increased by rotating the female screw body 371. Can be fine-tuned.

  Furthermore, although the case where the female screw body 371 is disposed on the lever mechanism 37 side and the holding force is adjusted by rotating the female screw body 371 is illustrated in the above embodiment, the present invention is not limited thereto. For example, as shown in FIG. 10 (b), a rocking body 376 having a passage hole 377 is disposed at a connecting portion between the lever mechanism 37 and the adjusting shaft portion 35, and the lever mechanism is connected to the passage hole 377. An adjustment shaft 35 (for example, a bolt) having a head portion 35A is inserted from the 37 side toward the swinging portion 36 that is rotatably arranged at the first free end (not shown) of the first holding body. The male screw portion 351 may be screwed with the female screw portion of the swinging portion 36. Thus, even after the lever mechanism 37 is operated and the iron pipe is held by the first holding body 30 and the second holding body 32, the head portion 35A of the adjusting shaft portion 35 is rotated. By doing so, the holding force can be finely adjusted.

  Note that the female screw body 371 shown in FIG. 9 or the swinging body 376 in FIG. 10A is protruded to the second holding body (not shown) side from the lever mechanism 37 as shown in FIG. 10C. It is preferable that the protruding portion can be engaged with the engaging portion 33 of the second holding body. At this time, as shown in FIG. 10 (d), if the cross section of the projecting portion of the female screw body 371 or the swinging body 371 is made into a shape having a different diameter or diagonal distance in the cross section, such as an ellipse or an oval shape, The longitudinal direction of the lever mechanism 37 can always coincide with the longitudinal direction of the second holding body.

<About the fourth embodiment>
FIG. 11 shows a clamp device 4 according to a fourth embodiment of the present invention. Since the clamp device 4 has the same structure as the clamp device 1 except for the lever mechanism 47, the lever mechanism 47 will be mainly described. The lever mechanism 47 has an extension 474A that further expands the lever body 474 in the longitudinal direction. The extension portion 474A is connected to the lever body 474 by a hinge 474B, and when opening and closing, the extension portion 474A is extended to improve operability. On the other hand, at the time of clamping, the extension 474A is folded so as to overlap the lever body 474 by the hinge 474B so that it does not get in the way. In addition, as shown in FIG. 12, you may arrange | position the extension part 474A displaceably (slidably) to a longitudinal direction with respect to the inside or the outside of the lever body 474 instead of hinge connection.

<About the fifth embodiment>
FIG. 13A shows a clamp device 5 according to the fifth embodiment of the present invention. Since the clamp device 5 has the same structure as the clamp device 1 except for the second main body portion 521 of the second holding body 52, the second main body portion 521 will be mainly described.

  The second main body portion 521 includes high rigidity regions 521X and low rigidity regions 521Y alternately along the circumferential direction. As shown in FIG. 13B, the high-rigidity region 521X has a pair of ribs b, so that the cross-sectional area and the moment of inertia of the cross-section become large and the rigidity is high. On the other hand, as shown in FIG. 13C, the low-rigidity region 521Y has a small cross-sectional area / cross-section when the protruding amount of the pair of ribs c is smaller than the ribs b or the ribs c themselves are omitted. The secondary moment is reduced and the rigidity is low. As a result, the low rigidity region 521Y is more easily elastically deformed than the high rigidity region 521X.

  Accordingly, when a clamping force is applied from the pressing portion 573 of the lever mechanism 57, the first holding body 50 and the second holding body 52 are intentionally applied to the iron pipe while positively elastically deforming the low rigidity region 521Y. It can be held more firmly by creating a typical unbalanced load or applying a more even load. That is, the elastic deformation of the low-rigidity region 521Y makes it possible to secure a sufficient amount of pressing of the outer peripheral surface 529 of the second free end 522 by the pressing portion 573.

  Here, the case where the rigidity is made different due to the difference in cross-sectional shape between the high-rigidity region 521X and the low-rigidity region 521Y is illustrated, but the present invention is not limited to this, and the high-rigidity region 521X and the low-rigidity region 521Y Different material properties (Young's modulus, etc.) can be made different from rigidity. In the present embodiment, the case where the plurality of low-rigid regions 521Y are intermittently arranged in the circumferential direction is illustrated, but at least one low-rigid region 521Y may be provided.

  The embodiment of the present invention shows an example for embodying the present invention, and the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. .

1, 2, 3 Clamping device 10, 20, 30 First holding body 12, 22, 32 Second holding body 13, 23, 33 Engaging portion 14, 24, 34 Connecting portion 15, 25, 35, 190, 191 Adjusting shaft portion 16, 26, 36 Oscillating portion 17, 27, 37 Lever mechanism 18, 28, 38 Distance adjusting mechanism 90 Clamping object 91 Iron pipe 101 First main body portion 102, 202, 302 First free end portion 102 Protrusion 112 First protruding portion 102a, 102b, 102d, 103, 104, 122a, 122b, 122d, 123 Standing portion 102c, 122c Bottom portion 105 Bottom portion 106, 126 Inner peripheral surface 108 Shaft 111, 282 Hole 121 Second body portion 122 Second free end portion 123 Standing portion 123a, 124a Inclined portion 123b, 124b Side 123c, 124c Bottom surface 129 Free end Outer peripheral surface 130 Main body outer peripheral surface 131 Housing portion 132 Central portion 134 Recessed portion 141 First holding body shaft hole 142 Second holding body shaft hole 143 Rotating shaft 151, 351 Male thread portion 152, 171 Groove 172 Pivot 173 Press part 174 Lever body 175 Cam top part 281 Nut member 371 Female thread body 372 Through hole 373 Female thread groove 500 Clamp set

Claims (18)

A first holding body having a first inner peripheral portion capable of contacting a part of the outer peripheral surface of the clamp object;
A second holding body having a second inner peripheral portion that is pivoted on one end side with respect to the first holding body and is capable of coming into contact with another part of the outer peripheral surface of the clamp object;
A distance adjusting mechanism which is disposed on the free end side with respect to the pivoted portion and on the first holding body side so that one end side thereof is swingable with respect to the first holding body;
A lever body that is pivotally attached to the other end of the distance adjusting mechanism, a pressing portion is provided in the vicinity of the pivoting portion, and extends outward from the pressing portion;
With
By the rotation operation of the lever body, the pressing portion can be brought into pressure contact with the pressure receiving seat surface provided on the free end side of the second holding body, and by this pressure contact, the outer peripheral surface of the clamp object is brought about. On the other hand, the clamp device is configured to be capable of holding and fixing the first inner peripheral portion and the second inner peripheral portion by pressing. The distance adjustment mechanism is
A swinging portion that is swingably disposed with respect to the first holding body side and includes an engaging portion;
An adjustment shaft portion that is engaged with the engagement portion so that the engagement position can be adjusted, and the lever body is pivotally attached to the other end side;
The clamping device according to claim 1, comprising:   The engaging portion has a female screw portion, and the adjusting shaft portion has a male screw portion, and the female screw portion and the male screw portion are screwed together so that the distance adjusting mechanism can be screwed together. The clamp device according to claim 2, wherein the distance adjustment is performed.   4. The clamp according to claim 2, wherein a notch-like engaging portion into which the adjusting shaft portion can be inserted is formed in the vicinity of the free end of the second holding body. 5. apparatus.   The pressing portion has a cam shape, and a cam mechanism is formed between the cam-shaped pressing portion and the pressure-receiving seat surface, and the cam mechanism causes the second holding body to be the first holding member. The clamp apparatus according to any one of claims 1 to 4, wherein the clamp object is held and fixed by being displaced and / or deformed toward the holder. The pressing portion in the form of the cam has a cam top portion having a maximum distance from a pivot shaft of the pressing portion at an outer edge in contact with the pressure receiving seat surface,
When the clamp object is held by the turning operation of the lever body, the cam top portion stops at a position further exceeding the position where the pressing force is maximum by approaching the pressure receiving seat surface. The clamping device according to claim 5.   The clamp device according to any one of claims 2 to 6, wherein the swinging portion is disposed inside a free end side of the first holding body. In the vicinity of the free end of the first holding body, a swinging portion receiving recess for storing the swinging portion is formed,
A pair of first projecting portions or first drilled portions are provided on both inner side surfaces of the swinging portion accommodating recess,
The swinging portion is provided with a pair of second perforated portions or a second convex portion that fits with the pair of first projecting portions or the first perforated portion on both side surfaces thereof. ,
The first projecting portion and the second perforating portion or the first perforating portion and the second projecting portion are engaged, and the engagement causes the swinging portion to swing or rotate. The clamping device according to any one of claims 2 to 8, wherein the clamping device is made freely. The swinging portion is disposed on the outer peripheral surface side of the first holding body,
The clamp apparatus in any one of Claim 2 thru | or 7. The adjusting shaft portion is formed with a male screw portion on the outer peripheral surface,
The lever body is pivoted directly or indirectly with respect to a female screw body having a female screw part screwed with the male screw part,
The distance adjusting mechanism rotates the female screw body to change the screwing position between the female screw portion and the adjusting shaft portion, thereby to determine the effective length of the adjusting shaft portion before holding and / or holding and fixing. 5. The clamping device according to claim 2, wherein the clamping device is configured to be adjusted later. The first holding body and / or the second holding body has an inclined portion that is inclined outward or inward in the width direction thereof,
The said inclined part is elastically deformable in the direction in which said 1st holding body and / or said 2nd holding body approach / separate the said clamp target object, It is characterized by the above-mentioned. The clamp apparatus in any one.   The clamp device according to any one of claims 1 to 11, wherein the second holding body has a housing portion for housing the lever body on an outer peripheral portion. An interference portion that interferes with the pressing portion of the lever body is formed on the outer surface in contact with the lever body in the vicinity of the notched engaging portion,
The clamping device according to claim 2, wherein the interference portion and the pressing portion interfere with each other at the time of clamping, thereby restricting separation of the pressing portion from the interference portion.   The clamp device according to claim 4, wherein the adjusting shaft portion that engages with the engaging portion has a shape in which rotation is limited in the engaging portion.   The clamp device according to any one of claims 1 to 14, wherein the lever body includes an extension portion, and is configured to be extendable in a longitudinal direction by displacement of the extension portion with respect to the lever body.   The clamp device according to claim 15, wherein the extension portion is hinged to the lever body.   16. The extension portion is configured to be extendable by an extension / contraction mechanism that is engaged inside and / or outside of the lever body so as to be displaceable with respect to the longitudinal direction of the lever body. Or the clamping device according to 16;   The first clamp device according to any one of claims 1 to 17 and the second clamp device, wherein the first clamp and the second clamp are rotatable or non-rotatable. A clamp set characterized by being connected to each other.

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