Pole holder

Abstract

To improve workability of a worker who attaches and detaches a pole holder.SOLUTION: A pole holder attachable to a support member includes a cam lever having a cam portion, a fastening portion pressed against the cam portion by rotating the cam lever in a closing direction, a fastening shaft to which the fastening portion is attached, and a holding portion having an open end that comes into contact with the fastening portion in a state where the cam lever is rotated in the closing direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a pole holder that can be attached to a support member. [Background technology]

[0002] Patent Document 1 describes a holder that can be fitted, fastened, and fixed to a pillar-shaped support member. This holder has a hook part with a recessed groove on its top surface, and a lock part that can be locked by simply inserting it into the recessed groove.

[0003] Also, as a pole holder 1 that can be attached to a support member such as that described in Patent Document 1, the pole holder 1 shown in FIG. 1 can be considered. This pole holder 1 is attached to a pole and used when attaching items such as peripheral devices to the pole. Specifically, the pole holder 1 has an openable and closable holding part 2 and a lever 3 attached to the holding part 2. This lever 3 can be rotated upward (UD) or downward (LD). The pole is then clamped in the holding part 2, and the lever 3, to which a screw is connected, is turned and tightened. In this way, the pole holder 1 is attached to the pole via the holding part 2. The pole holder 1 can be removed from the pole by rotating the lever 3 in the opposite direction to loosen it. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-58400 Summary of the Invention [Problem to be solved by the invention]

[0005] When using the pole holder 1, if other devices are placed around the pole, the lever 3 may interfere with the other devices during installation or removal. If the lever 3 interferes, the installation or removal work will be hindered. In other words, if other devices are placed around the pole, it will be difficult to turn the lever 3 during installation or removal work. Therefore, a means to prevent interference of the lever 3 is required. [Means for solving the problem]

[0006] A pole holder according to one aspect is a pole holder that can be attached to a support member, a cam lever having a cam portion; a tightening portion that is pressed against the cam portion by rotating the cam lever in a closing direction; a fastening shaft to which the fastening portion is attached; The cam lever has a holding portion having an open end that comes into contact with the tightening portion when the cam lever is rotated in the closing direction. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 10 is a schematic perspective view of a pole holder according to a comparative example. [Figure 2] FIG. [Figure 3] FIG. 2 is a schematic perspective view of a pole holder according to an embodiment. [Figure 4] Partial perspective view of the pole holder in the closed state. [Figure 5] A partial perspective view of the pole holder with the cam lever rotated. [Figure 6] A partial perspective view of the pole holder with the fastening shaft tilted. [Figure 7] FIG. 10 is a schematic perspective view of the pole holder with the fastening shaft tilted. [Figure 8] Partial perspective view of the pole holder in the open state. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, exemplary embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, and relative positions of components described in the following embodiments can be arbitrarily set and can be changed depending on the configuration of the device or method to which the present invention is applied, or various conditions. Furthermore, unless otherwise specified, the scope of the present invention is not limited to the embodiments specifically described below.

[0009] [pole] With reference to FIG. 2, a support member 100 to which a pole holder 10 (FIG. 3) for holding peripheral equipment is attached will be described. The support member 100 includes a vertically erected pole 101 and a horizontal bar 102 arranged horizontally relative to the pole 101. For example, in addition to the peripheral equipment attached by the pole holder 10, other equipment is arranged around the support member 100. As an example, the other equipment is arranged when a blood supply to a patient is required before and after surgery, and includes a blood circulation pump for an artificial heart-lung machine or auxiliary circulation, an artificial heart-lung machine, and a venous blood reservoir. For example, a blood circulation pump is attached to the horizontal bar 102 as an example of the other equipment.

[0010] The support member 100 also includes an arm member 103 to which other equipment can be attached. The arm member 103 is connected to a horizontal bar 102 and has a number of holes formed therein. A holding bar 104 for holding other equipment can be inserted into each hole. The pole holder 10 can be attached to any position on the pole 101. As an example, the pole holder 10 is attached to a position close to the base end of the horizontal bar 102.

[0011] When the pole holder 10 is attached in such a position, if the structure is like that of the comparative example, interference with the horizontal bar 102 and the like may occur. Specifically, interference with the horizontal bar 102 may make it difficult to turn the lever 3 of the comparative example. That is, when turning the lever 3 in the upward direction UD shown in FIG. 2 or when turning the lever 3 in the downward direction LD shown in FIG. 2, the lever 3 may hit the horizontal bar 102 and the like.

[0012] Therefore, it becomes necessary to change the position of other devices placed around the pole 101 to create space for turning the lever 3. Also, in order to release the holding part 2 that clamps the pole 101, it is necessary to turn the lever 3 multiple times (for example, seven times). Therefore, particularly when the peripheral devices are heavy, the installation and removal work becomes more difficult. Furthermore, when the lever 3 of the comparative example is used, the clamping force changes depending on the tightening method used by the worker.

[0013] [Pole holder] 3, a pole holder 10 that can be attached to a support member 100 is provided with a cam lever 13 instead of the lever 3 of the comparative example. The pole holder 10 also has a holding part 12 that can be attached to a pole 101. Furthermore, a hole 14 is formed in the center part 11 of the pole holder 10, into which the lever tip 13A of the cam lever 13 fits.

[0014] When the holding part 12 at one end of the pole holder 10 is attached to the pole 101, a peripheral device can be attached to the holding part 12 at the other end of the pole holder 10. In this case, the peripheral device may be attached to the pole holder 10 via another member such as a rod-shaped arm or a hook.

[0015] The pole holder 10 has a central portion 11 that is continuous with the holding portion 12. The holding portions 12 are located at both ends of the pole holder 10, sandwiching the central portion 11. The holding portion 12 has a substantially ring-like shape and is configured to be able to be opened by operating a cam lever 13. Specifically, the cam lever 13 is rotated in a first rotation direction D1 to the left in FIG. 3, or in a second rotation direction D2 to the right in FIG. 3. Thereafter, the fastening shaft 16 (FIG. 4) is tilted toward the central portion 11, thereby opening the holding portion 12.

[0016] Then, after the pole 101 is sandwiched inside the holding part 12, the holding part 12 is closed. For example, the pole 101 can be sandwiched between the open end 12A serving as an upper holder and the fixed end serving as a lower holder opposite the open end 12A. This allows the holding part 12 to be attached to the pole 101. Note that in the example of FIG. 3, the holding part 12 has a substantially ring-like shape, but the holding part 12 may have a polygonal cross-sectional shape such as a rectangle. For example, if the holding part 12 has a rectangular cross-sectional shape, the holding part 12 can be attached to a prismatic pole 101.

[0017] When the cam lever 13 is rotated in the closing direction, the lever tip 13A of the cam lever 13 fits into the hole 14 formed in the central portion 11. That is, when the holding portion 12 is in the closed state, the lever tip 13A fits into the hole 14. For this reason, the hole 14 is formed at a position that intersects with the arc-shaped path that the lever tip 13A traces when the cam lever 13 is rotated in the closing direction opposite to the first rotation direction D1 or the second rotation direction D2. In other words, the hole 14 is formed at a position that is spaced apart from the base end of the cam lever 13 by the length of the cam lever 13.

[0018] As an example, hole 14 is a through hole, but it may also be a hole with a bottom. Also, in the example of FIG. 3, one hole 14 is formed so that two lever tips 13A can fit therein. However, multiple (for example, two) hole parts 14 into which each lever tip 13A can fit may also be formed. Also, in the example of FIG. 3, hole 14 has an oval shape. However, hole 14 may have other shapes such as a circle, an ellipse, a polygon such as a rectangle, or a teardrop shape.

[0019] [How to open the pole holder] Next, a method for opening the pole holder 10 will be described with reference to Figs. 4 to 8. Fig. 4 is a partial perspective view showing the pole holder 10. Fig. 4 also shows the holding part 12 in a closed state. Fig. 5 is a partial perspective view showing the pole holder 10 in a state where one cam lever 13 is rotated. Fig. 6 is a partial perspective view showing the pole holder 10 in a state where one fastening shaft 16 is tilted. Fig. 7 is a schematic perspective view showing the pole holder 10 in a state where one fastening shaft 16 is tilted.

[0020] 8 is a partial perspective view showing the pole holder 10 with one of the holding parts 12 opened. Note that Figures 5 to 8 show the state in which the holding part 12 located on the right side in the figure is opened. The holding part 12 on the left side in the figure can also be opened in the same way, so a description thereof will be omitted.

[0021] As shown in FIG. 4, the holding portion 12 has an open end 12A. The open end 12A contacts the tightening portion 15 in a closed state in which the cam lever 13 is rotated in a closing direction opposite to the first rotation direction D1 or the second rotation direction D2. Specifically, the upper surface of the open end 12A is pressed by the lower surface of the tightening portion 15 around the periphery of the groove portion 12B (FIG. 7). In addition, when the holding portion 12 is in a closed state, the lever tip 13A of the cam lever 13 is inserted into the hole portion 14. Therefore, the hole portion 14 has a size that allows the lever tip 13A to fit into it. This prevents an operator from unintentionally catching or rotating the cam lever 13. This prevents an operator from unintentionally loosening the holding portion 12.

[0022] Furthermore, by rotating the cam lever 13 shown in FIG. 4 in the up-down direction in FIG. 4, the force with which the tightening portion 15 tightens the holding portion 12 changes. That is, the cam lever 13 has a cam portion 13B. Specifically, the base end of the cam lever 13 forms the cam portion 13B. Then, by rotating the cam lever 13 in the closing direction, the tightening portion 15 is pressed against the cam portion 13B. That is, when the cam lever 13 is rotated in the closing direction, the tightening force of the tightening portion 15 increases. Also, when the cam lever 13 is rotated in the opening direction, either the first rotation direction D1 or the second rotation direction D2, the tightening force of the tightening portion 15 decreases.

[0023] Furthermore, cam portion 13B has a shape that creates a gap between cam lever 13 and tightening portion 15 by rotating cam lever 13 in the opening direction opposite to the closing direction. That is, cam portion 13B has a shape in which the radius from lever rotation axis 13C is not constant. Specifically, when holding portion 12 is in the closed state, the length from lever rotation axis 13C to the bottom end of cam portion 13B is longer than the length from lever rotation axis 13C to the bottom end of cam portion 13B when holding portion 12 is in the open state.

[0024] Therefore, when the cam lever 13 is rotated in the first rotation direction D1 or the second rotation direction D2, a small gap is created between the holding portion 12 and the tightening portion 15 in the direction along the fastening shaft 16 to which the tightening portion 15 is attached. This allows the tightening of the holding portion 12 to be loosened. In other words, the force pressing the open end 12A of the holding portion 12 against the center portion 11 is weakened.

[0025] Alternatively, cam portion 13B may be configured to have a size that prevents a gap from forming between holding portion 12 and fastening portion 15 when cam lever 13 is rotated within a range that allows the fastening of holding portion 12 to be loosened. Even in this case, if the force pressing open end 12A of holding portion 12 against central portion 11 weakens, fastening shaft 16 can be tilted.

[0026] The fastening shaft 16 is supported by the holding part 12 so as to be rotatable around a rotation axis 16A. The tightening part 15 is a ring-shaped member, and is slidably attached to the tip of the fastening shaft 16. Alternatively, the fastening shaft 16 may be supported by the central part 11 so as to be rotatable.

[0027] To open the holding portion 12, first, the cam lever 13 is raised. That is, as shown in FIG. 5, the cam lever 13 is rotated in the second rotation direction D2, which is the opening direction. This weakens the force pressing the open end 12A of the holding portion 12 against the central portion 11. However, in the state shown in FIG. 5, the holding portion 12 cannot yet be opened. Therefore, in order to open the holding portion 12, the fastening shaft 16 needs to be tilted toward the central portion 11.

[0028] Specifically, the angle of the fastening shaft 16 is changed after the cam lever 13 is raised. To achieve this, the cam lever 13 is rotated to loosen the clamping of the holding part 12, which allows the fastening shaft 16 to rotate around the rotation axis 16A, as shown in FIG. 6. Also, as shown in FIG. 7, a substantially U-shaped groove 12B is formed in the open end 12A of the holding part 12. One end of this groove 12B is open. Therefore, when the fastening shaft 16 is rotated, a part of the fastening shaft 16 comes out of the groove 12B.

[0029] Furthermore, when fastening shaft 16 is rotated, tightening portion 15 and open end 12A are separated so that holding portion 12 can be opened. As a result, open end 12A is no longer in contact with tightening portion 15, and the tip of open end 12A can be pulled out from between tightening portion 15 and central portion 11.

[0030] As shown in FIG. 6 , the central portion 11 is formed with an escape groove 11A into which a portion of the fastening shaft 16 fits when rotated. When the fastening shaft 16 is tilted, the tightening portion 15 abuts against the edge of the escape groove 11A. This restricts rotation of the fastening shaft 16 in the direction toward the central portion 11. As an example, the escape groove 11A has a U-shaped cross section and becomes deeper as it approaches the rotation axis 16A. Alternatively, the escape groove 11A may have a uniform depth. Alternatively, the escape groove 11A may penetrate the central portion 11.

[0031] After changing the angle of the fastening shaft 16, the open end 12A is rotated around the holder rotation shaft 12C. That is, as shown in FIG. 8, the open end 12A is rotated upward in the drawing. As described above, because the open end 12A is not in contact with the fastening portion 15, the tip of the open end 12A can be pulled out from between the fastening portion 15 and the central portion 11. This opens the holding portion 12, allowing the pole 101 to be sandwiched inside the holding portion 12.

[0032] Thereafter, the holding part 12 is closed, and the fastening shaft 16 is rotated around the rotation axis 16A to its original position. That is, the holding part 12 is rotated downward in the figure around the holder rotation axis 12C, and the fastening shaft 16 is raised. Note that when the fastening shaft 16 is rotated in a direction away from the central part 11, the tightening part 15 comes into contact with the edge of the groove part 12B. This restricts the rotation of the fastening shaft 16 in a direction away from the central part 11.

[0033] Furthermore, cam lever 13 is rotated around lever rotation axis 13C to its original position. That is, cam lever 13 is tilted toward center portion 11, and lever tip 13A is inserted into hole portion 14. This closes holding portion 12, and holding portion 12 is attached so that pole 101 is sandwiched inside holding portion 12.

[0034] On the other hand, when removing the pole holder 10, the holding portion 12 is loosened using the cam lever 13 and the angle of the fastening shaft 16 is changed. Then, the holding portion 12 is opened and the pole 101 is pulled out from the holding portion 12. In this way, the pole holder 10 can be easily attached to or removed from the pole 101 by loosening the holding portion 12 using the cam lever 13 and changing the angle of the fastening shaft 16.

[0035] According to the pole holder 10 described above, interference of the cam lever 13 can be suppressed. In addition, the pole holder 10 can be easily attached and detached by operating the cam lever 13. This improves the operability of the worker who attaches and detaches the pole holder 10 to the support member 100. Furthermore, by using the cam lever 13, the holding part 12 can be tightened with a constant force by rotating the cam lever 13 to a predetermined position, regardless of the manner of operation by the worker. This prevents the holding part 12 from being unintentionally released due to insufficient tightening force.

[0036] Although the present invention has been described above with reference to each embodiment, the present invention is not limited to the above-described embodiments. Inventions modified without violating the present invention, and inventions equivalent to the present invention, are also included in the present invention. Furthermore, each embodiment and each modified form, and technical means included in each embodiment or each modified form, can be combined as appropriate without violating the present invention.

[0037] For example, the number of holding portions 12 is not limited to two. The number of holding portion 12 may be only one. In this case, another holding portion having a different shape from the holding portion 12 is provided at the other end of the pole holder 10 opposite to the end where the holding portion 12 is provided. For example, the other holding portion is an arm portion, a hook portion, or the like. The number of holding portions 12 may also be three. In this case, the pole holder 10 has a trifurcated shape with ends protruding in three directions.

[0038] Furthermore, the number of holding portions 12 may be four or more. In this case, the pole holder 10 has the same number of ends as the number of holding portions 12. The holding portions 12 and the central portion 11 may be separate bodies. In this case, the holding portions 12 are fixed to the central portion 11 by a method such as screwing.

[0039] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes.

[0040] (Appendix 1) A pole holder attachable to a support member, a cam lever having a cam portion; a tightening portion that is pressed against the cam portion by rotating the cam lever in a closing direction; a fastening shaft to which the fastening portion is attached; a holding portion having an open end that comes into contact with the tightening portion when the cam lever is rotated in the closing direction.

[0041] (Appendix 2) The pole holder described in Appendix 1, wherein the cam portion has a shape such that a gap is created between the cam lever and the tightening portion by rotating the cam lever in an opening direction opposite to the closing direction.

[0042] (Appendix 3) The fastening shaft is rotatable around a rotation axis, 3. The pole holder according to claim 1, wherein the fastening portion and the open end are spaced apart so that the holding portion can be opened when the fastening shaft is rotated.

[0043] (Appendix 4) a central portion continuous with the holding portion; A pole holder as described in any one of appendix 1 to 3, wherein a hole is formed in the central portion into which the tip of the cam lever fits when the cam lever is rotated in the closing direction. [Explanation of symbols]

[0044] 10: Pole holder 11: Central part 12: Holding part 12A: Open end 13: Cam lever 13A: Lever tip 13B: Cam section 14: Hole 15: Fastening part 16: Fastening shaft 16A: Rotating shaft 100: Support member 101: Paul

Claims

1. A pole holder attachable to a support member, a cam lever having a cam portion; a tightening portion that is pressed against the cam portion by rotating the cam lever in a closing direction; a fastening shaft to which the fastening portion is attached; a holding portion having an open end that comes into contact with the tightening portion when the cam lever is rotated in the closing direction.

2. 2. The pole holder according to claim 1, wherein the cam portion has a shape such that a gap is created between the cam lever and the clamping portion by rotating the cam lever in an opening direction opposite to the closing direction.

3. The fastening shaft is rotatable around a rotation axis, 3. The pole holder according to claim 1, wherein the fastening portion and the open end are spaced apart from each other so that the holding portion can be opened when the fastening shaft is rotated.

4. a central portion continuous with the holding portion; 3. The pole holder according to claim 1, wherein the central portion is formed with a hole into which the tip of the cam lever fits when the cam lever is rotated in the closing direction.

Images