Clamp

Abstract

To provide a clamp which can hold a lid part of the clamp at a predetermined position with a simple structure before the lid is fixed to reduce a burden of a worker, allow work to be done by one worker, and enable improvement of working efficiency and increase of working speed.SOLUTION: A clamp 10 holds a rod-like member P and includes: a body 20 having an inner diameter along the rod-like member P; a lid part 30 having opening / closing parts 31 which are connected to opened / closed parts 21 of the body 20 and may open or close relative to the opened / closed parts 21; and an engagement part 40 which is connected to a position, which is different from positions provided with the opened / closed parts 21, of the body 20 and engages with a position, which is different from positions provided with the opening / closing parts 31, of the lid part 30 when the lid part 30 is closed relative to the body 20 to hold the closed state. The clamp 10 has a holding mechanism which holds the lid part 30 at a position such that a longitudinal direction L of the lid part 30 is directed in a substantially vertical direction relative to the body 20 in a state that the body 20 is placed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a clamp for gripping a rod-shaped member such as a metal pipe. [Background technology]

[0002] Conventionally, a clamp for gripping rod-shaped or tubular members such as metal pipes has been known in which a lid is rotatably attached to a main body, and the main body and the lid grip the rod-shaped member (see, for example, Reference 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-026816 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional clamp described above, the lid can rotate freely until the main body and the lid are fixed, and the position of the lid is not fixed. In this way, when fixing the clamp, the lid moves freely, so it is necessary to fix the clamp while suppressing its movement, which places a heavy burden on the worker and sometimes makes it impossible for one person to do the work. As a result, there are problems such as poor work efficiency and slow work speed.

[0005] The present invention has been made in consideration of such problems, and aims to provide a clamp that can hold the cover of a clamp in a predetermined position before it is fixed with a simple configuration, thereby reducing the burden on the worker and enabling the work to be performed by one person, thereby improving work efficiency and increasing work speed. [Means for solving the problem]

[0006] In order to achieve this objective, the present invention provides a clamp for gripping a rod-shaped member, comprising: a main body portion having an inner diameter that follows the rod-shaped member; a lid portion connected to an openable / closable portion of the main body portion and having an openable / closable portion that can be opened and closed freely relative to the openable / closable portion; and a locking portion connected to a position different from the position at which the openable / closable portion of the main body portion is provided, and which locks a position on the lid portion different from the position at which the openable / closable portion is provided when the lid portion is closed relative to the main body portion, thereby maintaining the closed state, and which is characterized in that the clamp has a holding mechanism that holds the lid portion in a position where the longitudinal direction of the lid portion is approximately perpendicular to the main body portion when the main body portion is placed on it.

[0007] Furthermore, in addition to the configuration described above, the present invention is characterized in that, as the holding mechanism, the openable / closable portion of the main body portion has a long hole whose longitudinal direction is the up-and-down direction when the main body portion is placed, the openable / closable portion of the lid portion has an openable / closable axis that is inserted into the long hole, and has protrusions near the openable / closable axis that protrude outward in the axial direction of the openable / closable axis, and a recess into which the protrusion is inserted is formed near the openable / closable portion of the main body portion, and the holding mechanism is a clamp that is configured to hold the lid portion in a position whose longitudinal direction is approximately vertical to the main body portion by orienting the longitudinal direction of the lid portion approximately vertically to the main body portion, moving the openable / closable axis downward along the long hole, and inserting the protrusion into the recess.

[0008] Furthermore, in addition to the configuration described above, the present invention is characterized in that the openable / closable part is provided on an erect portion extending upward from the main body portion, and the lid portion is a clamp that is formed narrower than the surface of the erect portion on which the openable / closable part is provided.

[0009] Furthermore, in addition to the configuration described above, the present invention is characterized in that the locking portion is rotatably connected to a position opposite the openable / closable portion on the main body portion, and is configured to hold the lid portion by closing the lid portion and rotating the locking portion toward the inside of the main body portion, and to release the closed state of the lid portion by rotating the locking portion toward the outside of the main body portion from a state in which the closed state of the lid portion is maintained, and a stopper is provided so that the rotation stops at a position above the horizontal position when the locking portion is rotated toward the outside of the main body portion.

[0010] Furthermore, in addition to the above-described configuration, the present invention is characterized in that the clamp is configured so that the long hole of the openable / closable portion has a diameter that decreases from the top to the bottom.

[0011] Furthermore, in addition to the configuration described above, the present invention is characterized in that the protrusion is configured to narrow from the top to the bottom, the recess is configured to narrow from the top to the bottom, and the clamp is configured so that the protrusion is held at the bottom of the recess using the recess as a guide. Effect of the Invention

[0012] According to the present invention, since the holding mechanism is provided to hold the lid in a position where the longitudinal direction of the lid is substantially perpendicular to the main body, the lid of the clamp before fixing can be held in a predetermined position. As a result, the burden on the worker can be reduced, and the work can be done by one person. This improves work efficiency and speeds up the work.

[0013] Furthermore, according to the present invention, the holding mechanism is capable of sliding the lid portion of the clamp along the long hole and inserting the protrusion provided on the lid portion into the recess provided on the main body portion, thereby holding the lid portion in a position in which its longitudinal direction is approximately perpendicular to the main body portion, so that the lid portion of the clamp before fixing can be held in a predetermined position with a simple configuration.

[0014] Furthermore, according to the present invention, the lid portion is formed narrower than the upright portion of the main body portion, so that even if the gap between the rod-shaped member and another member is narrow, the lid portion can be inserted into the narrow gap, making it easier to work in narrow gaps.

[0015] In addition, according to the present invention, the locking part that holds the lid part in the closed state relative to the main body has a stopper that stops the rotation range at a position above the horizontal position, so the locking part can also be stopped at an appropriate position, making it easier to control the clamp. As a result, the burden on the worker can be reduced, making it easier for one person to perform the work. This improves work efficiency and allows the work to be done faster.

[0016] Furthermore, according to the present invention, the long hole is configured so that its diameter decreases from the top to the bottom, so that when the lid portion is held in a position facing approximately vertically, the opening / closing axis can be held in a stable state without wobbling.

[0017] Furthermore, according to the present invention, the protrusion narrows from the top to the bottom, and the recess narrows from the top to the bottom, and the protrusion is held at the bottom of the recess using the recess as a guide, so that when the lid is held in a position facing approximately vertically, the guide of the recess can smoothly guide the protrusion to the bottom of the recess. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view showing a clamp according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a side view showing the clamp according to the embodiment. [Diagram 3] FIG. 4 is a side view showing an open state of the clamp according to the embodiment. [Figure 4] FIG. 4 is an enlarged perspective view showing the state of the protrusions and recesses in the clamp according to the embodiment in an open state. [Diagram 5] FIG. 4 is a side view of the main body of the clamp according to the embodiment. [Figure 6] FIG. 4 is a perspective view of a cover portion of the clamp according to the embodiment. [Figure 7] FIG. 4 is a side view of the cover portion of the clamp according to the embodiment. [Figure 8] FIG. 4 is a perspective view showing an example of a state in which the clamp according to the embodiment is used. [Figure 9] FIG. 4 is a side view showing an example of a state in which the clamp according to the embodiment is used. [Figure 10] FIG. 11 is a perspective view showing another example of the clamp according to the embodiment in use. [Figure 11] 13 is a side view showing another example of a state in which the clamp according to the embodiment is used. FIG. [Figure 12] FIG. 13 is a perspective view showing yet another example of a state in which the clamp according to the embodiment is used. [Figure 13] 13 is a side view showing yet another example of a state in which the clamp according to the embodiment is used. FIG. [Figure 14] FIG. 4 is a perspective view showing a first modified example of the clamp according to the embodiment. [Figure 15] FIG. 4 is a perspective view showing an open state of a first modified example of the clamp according to the embodiment. [Figure 16] FIG. 11 is a perspective view showing a second modified example of the clamp according to the embodiment. [Figure 17] FIG. 11 is a perspective view showing an open state of a second modified example of the clamp according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described.

[0020] 1 to 13 show an embodiment of the present invention.

[0021] The clamp 10 of this embodiment is used to grip rod-shaped members (including tubular members) such as single-tube pipes at construction sites, repair sites, inspection sites, and other construction sites. However, the use is not limited to this, and the clamp may be used for other purposes as appropriate.

[0022] As shown in FIGS. 1 to 7, the clamp 10 of this embodiment has a main body portion 20, a cover portion 30, and a locking portion 40. As shown in FIG.

[0023] Of these, the main body portion 20 has an inner diameter 24 that corresponds to the rod-shaped member P, as shown in FIG. 5, and this inner diameter 24 and an inner diameter 35 of the lid portion 30, which will be described later, are configured to sandwich the rod-shaped member P.

[0024] The main body 20 of this embodiment is a member that is generally L-shaped in side view as shown in Fig. 5, and has an upwardly extending erected portion 25 formed on one end side (the left side in Fig. 5 in this case), and an openable / closable portion 21 formed on the tip of the erected portion 25. The openable / closable portion 21 is rotatably (openably / closably) connected to an openable / closable portion 31 of the lid 30 described below, and has a long hole 22 whose longitudinal direction L is the up-down direction when the main body 20 is placed as shown in Fig. 5. In addition, a recess 23 into which a protrusion 34 provided on the lid 30 is inserted is formed near the openable / closable portion 21 of the main body 20.

[0025] Moreover, a pivotable portion 27 that pivotally connects the pivotable portion 41 of the locking portion 40 is provided on the other end side (here, the right side in FIG. 5) of the main body portion 20 opposite to the one end side where the erected portion 25 and the openable / closable portion 21 are formed. Here, an axial hole is formed as the pivotable portion 27. Also, the locking portion 40 is pivoted inwardly of the main body portion 20 (leftward in FIGS. 2 and 3) with the lid portion 30 in the closed state to hold the lid portion 30, and the locking portion 40 is pivoted outwardly of the main body portion 20 (rightward in FIGS. 2 and 3) from the state where the lid portion 30 is held in the closed state to release the closed state of the lid portion 30.

[0026] A stopper 28 is provided so that when the locking portion 40 is rotated outwardly from the main body 20 (to the right in Figs. 2 and 3), the rotation of the locking portion 40 stops at a position above the horizontal position. Here, a wall-like portion is provided as the stopper 28 near the rotated portion 27, and the stopper 28 is provided at a position and height such that when the locking portion 40 is rotated outwardly a predetermined amount (a predetermined amount until it reaches the horizontal position), the locking portion 40 abuts against the stopper 28 and cannot rotate any further.

[0027] Next, the lid 30 will be described with reference to Figures 6 to 8. In this embodiment, the lid 30 has an opening / closing part 31 provided at one end connected to the openable / closable part 21 of the main body 20 so as to be able to open and close freely. Specifically, an opening / closing shaft 32 provided on the opening / closing part 31 is inserted into an elongated hole 22 in the openable / closable part 21 so as to be able to rotate freely. The opening / closing shaft 32 is also able to move up and down within the elongated hole 22.

[0028] It also has a lid portion 30 that is connected to the openable / closable portion 21 of the main body portion 20 and has an opening / closing portion 31 that can be opened and closed freely relative to the openable / closable portion 21, and a locking portion 40 that is connected to a position different from the position at which the openable / closable portion 21 of the main body portion 20 is provided (the right side in Figures 2 and 3) and locks a position on the lid portion 30 different from the position at which the opening / closing portion 31 is provided when the lid portion 30 is closed relative to the main body portion 20, thereby maintaining the closed state.

[0029] The cover 30 also has protrusions 34 formed near the opening / closing shaft 32 and protruding outward in the axial direction J of the opening / closing shaft 32, and here, two are provided at the left and right. As shown in Figures 3 and 4, the cover 30 is configured to be held in a position in which the longitudinal direction L of the cover 30 faces approximately vertically to the main body 20, the opening / closing shaft 32 is moved downward along the long hole 22, and the protrusions 34 are inserted into the recesses 23, so that the cover 30 is held in a position in which the longitudinal direction L faces approximately vertically to the main body 20.

[0030] At this time, the lid portion 30 is formed narrower than the surface (long hole surface) 26 on which the long hole 22 (openable / closable portion 21) is provided in the standing portion 25. Specifically, as shown in Fig. 3, the width H1 of the lid portion 30 in a side view is configured to be narrower than the width H2 of the long hole surface 26 of the standing portion 25. Also, the width H1 of the lid portion 30 is configured to be contained within the width H2 of the standing portion 25 (the width H1 of the lid portion 30 does not protrude from the width H2 of the standing portion 25).

[0031] Although not shown in the drawings, the long hole 22 of the openable / closable part 21 is configured so that the diameter becomes smaller from the top to the bottom (so-called tapered shape). As a result, when the lid part 30 is held upright, the opening / closing shaft 32 fits into the long hole 22 with the small diameter, and a more stable holding state can be formed.

[0032] In addition, the protrusion 34 is configured to narrow from the top to the bottom (here, trapezoidal in side view), and the recess 23 is configured to narrow from the top to the bottom (here, trapezoidal in side view).

[0033] With this configuration, the slope of the recess 23 acts as a guide for the slope of the protrusion 34 to move to the bottom of the recess 23 where it is held. When the lid 30 is held in a position facing approximately vertically, the guide of the recess 23 can smoothly guide the protrusion 34 to the bottom of the recess 23.

[0034] In this embodiment, the width H3 of the lower part of the protrusion 34 shown in Fig. 4 is configured to be narrower than the width H4 of the lower part of the recess 23, so that the protrusion 34 can move smoothly to the lower part of the recess 23. However, this is not limited to this, and the width H3 of the lower part of the protrusion 34 may be configured to be wider than the width H4 of the lower part of the recess 23. In that case, the protrusion 34 can be configured to fit into and be held in the recess 23, resulting in a more stable holding state.

[0035] The long hole 22, the recess 23, the protrusion 34, etc. constitute the holding mechanism of the present invention.

[0036] The clamp 10 may be used to hold a tumbler and a pipe with a tumbler fastener 50 attached as shown in Figures 8 and 9, or to hold two pipes in the same direction by connecting them back to back as shown in Figures 10 and 11, or to hold two pipes in different directions by connecting them back to back and offset by 90 degrees as shown in Figures 12 and 13. Also, the uses are not limited to these, and it may be used according to appropriate circumstances.

[0037] In addition, in Figs. 8 to 13, the same components as those in Figs. 1 to 7 are denoted by the same reference numerals and the description thereof is omitted.

[0038] As described above, according to this embodiment, the holding mechanism holds the lid 30 in a position where the longitudinal direction L of the lid 30 is substantially perpendicular to the main body 20, so that the lid 30 of the clamp 10 before fixing can be held in a predetermined position. As a result, the burden on the worker can be reduced, and the work can be performed by one person. This improves work efficiency and speeds up the work.

[0039] Furthermore, according to this embodiment, the holding mechanism slides the lid portion 30 of the clamp 10 along the long hole 22 and inserts the protrusion 34 provided on the lid portion 30 into the recess 23 provided on the main body portion 20, thereby holding the lid portion 30 in a position in which the longitudinal direction L is approximately perpendicular to the main body portion 20. Therefore, the lid portion 30 of the clamp 10 before fixing can be held in a predetermined position with a simple configuration.

[0040] Furthermore, according to this embodiment, the lid portion 30 is formed narrower than the upright portion 25 of the main body portion 20. Therefore, even if the gap between the rod-shaped member P and another member is narrow, the lid portion 30 can be inserted into the narrow gap, making it easier to work in the narrow gap.

[0041] Furthermore, according to this embodiment, the stopper 28 is provided to stop the rotation range of the locking portion 40, which holds the lid portion 30 in the closed state relative to the main body portion 20, at a position above the horizontal position, so that the movement of the locking portion 40 can be stopped at an appropriate position, making it easier to control the clamp 10. As a result, the burden on the worker can be reduced, and the work can be performed by one person. This improves work efficiency and allows the work to be done faster.

[0042] Furthermore, according to this embodiment, the long hole 22 is configured so that its diameter decreases from the top to the bottom, so that when the lid portion 30 is held in a position facing approximately vertically, the opening / closing axis 32 can be held in a stable state without wobbling.

[0043] Furthermore, according to this embodiment, the protrusion 34 narrows from the top to the bottom, and the recess 23 narrows from the top to the bottom, and the protrusion 34 is configured to be held at the bottom of the recess 23 using the recess 23 as a guide. Therefore, when the lid portion 30 is held in a position facing approximately vertically, the guide of the recess 23 can smoothly guide the protrusion 34 to the bottom of the recess 23.

[0044] The present invention is not limited to the above-described embodiments, but can be applied to other configurations and other usage situations.

[0045] For example, in the above-described embodiment, the protrusion 34 and the recess 23 are used as a retaining mechanism for retaining the lid portion 30 in a position facing approximately vertically, but this is not limited to this, and a different configuration may be used as long as the same effect is obtained.

[0046] For example, as shown in Figures 14 and 15, a protrusion 34A may be provided along the longitudinal direction L of the lid portion 30A instead of the protrusion 34, and when the lid portion 30A is held in a position facing approximately vertically and slid downward along the long hole 22, as shown in Figure 15, the protrusion 34A may be positioned so as to enter the inside of the wall portion 23A, and the protrusion 34A may be leaned against the wall portion 23A, thereby forming a holding mechanism that holds the lid portion 30A in a position facing approximately vertically.

[0047] As shown in Figs. 16 and 17, a protruding portion 34A is provided along the longitudinal direction L of the lid portion 30A instead of the protruding portion 34. When the lid portion 30A is held in a position facing substantially vertically and slid downward along the long hole 22, as shown in Fig. 17, the protruding portion 34A is A holding mechanism may be provided in which the protrusion 34A is positioned inside the shaft portion 23B (position in FIG. 17) and leans against the shaft portion 23B to hold the protrusion 34A in a position facing substantially vertically.

[0048] 14 to 17, the same components as those in the above-described embodiment are denoted by the same reference numerals and their description is omitted. Also, the same components between Figs. 14, 15 and 16, 17 are denoted by the same reference numerals and their description is omitted. [Explanation of symbols]

[0049] 10,10A,10B Clamp 20, 20A, 20B Main body 21 Opening / closing part 22 Long hole (retention mechanism) 23 Recess (retention mechanism) 23A Wall (holding mechanism) 23B Shaft (holding mechanism) 24 Inner diameter 25 Vertical section 26 Long hole surface 27 Rotated part 28 Stopper 30,30A Lid 31 Opening and closing section 32 Opening and closing axis 33 Engagement part 34 Projection (retention mechanism) 34A Projection (retention mechanism) 35 Inner diameter 40 Locking part 41 Rotating part 50 Taruki fastener H1 Lid width H2 Width of the slotted hole H3 Width at bottom of protrusion H4 Width at bottom of recess J-axis direction L Longitudinal P Rod-shaped member

Claims

1. A clamp for gripping a rod-shaped member, A main body portion having an inner diameter along the rod-shaped member; A cover part having an opening and closing part that is connected to the openable and closable part of the main body part and can be opened and closed relative to the openable and closable part; a locking part that is connected to a position of the main body part different from a position where the openable / closable part is provided, and that locks the position of the lid part different from the position where the openable / closable part is provided on the lid part when the lid part is closed relative to the main body part, thereby maintaining the closed state; It has A clamp characterized in that, when the main body is placed on the clamp, the clamp has a holding mechanism that holds the lid in a position in which the longitudinal direction of the lid is approximately perpendicular to the main body.

2. The holding mechanism includes: The openable / closable portion of the main body has a long hole whose longitudinal direction is the up-down direction when the main body is placed, the opening / closing portion of the lid portion has an opening / closing shaft that is inserted into the long hole, and has protrusions formed near the opening / closing shaft and protruding outward in an axial direction of the opening / closing shaft, A recess into which the protrusion is inserted is formed near the openable / closable portion of the main body, The clamp according to claim 1, characterized in that the holding mechanism is configured to hold the lid in a position in which its longitudinal direction is approximately perpendicular to the main body by orienting the lid with its longitudinal direction approximately perpendicular to the main body, moving the opening / closing axis downward along the long hole, and inserting the protrusion into the recess.

3. The openable / closable portion is provided on an upwardly extending erect portion of the main body, The clamp according to claim 1 , wherein the lid portion is formed to be narrower than a surface of the erected portion on which the openable / closable portion is provided.

4. The locking portion is rotatably connected to the main body at a position facing the openable / closable portion, The cover is placed in a closed state, and the locking portion is rotated inwardly of the main body portion to hold the cover, and the closed state of the cover is released by rotating the locking portion outwardly of the main body portion from a state in which the cover is held in a closed state, 2. The clamp according to claim 1, further comprising a stopper provided so that when the engaging portion is rotated outwardly of the main body, the rotation is stopped at a position above a horizontal position.

5. 3. The clamp according to claim 2, wherein the elongated hole of the openable / closable portion is configured so that the diameter thereof decreases from the top to the bottom.

6. The protrusion is configured to narrow from the top to the bottom, The recess is configured to narrow from the top to the bottom, 3. The clamp according to claim 2, wherein the projection is held in a lower portion of the recess by using the recess as a guide.

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