JP7419027B2 - drum - Google Patents

Description

The present invention relates to a drum.

BACKGROUND ART Conventionally, a disassembly drum as shown in Patent Document 1 has been known. This drum has a body and a collar disposed at both ends of the body. The body is made up of a plurality of arc-shaped members (hereinafter referred to as divided members), and each divided member has a wedge hole formed therein. With the split member assembled to the flange, the body is fixed to the flange by driving a wedge into the wedge hole.

Japanese Patent Application Publication No. 2003-104629

In the configuration of Patent Document 1, a tool for driving a wedge is required when fixing the divided member (body) to the collar. Further, when driving the wedge, there is a problem that deformation easily occurs in the divided member, and the work time increases to drive the wedge so as not to deform.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a drum that can be more easily disassembled or assembled.

In order to solve the above problems, a drum according to one aspect of the present invention includes a body section configured by a plurality of divided members formed in an arc shape when viewed from the axial direction, and a drum section provided at both ends of the body section. a flange, a plurality of first fixtures each fixed to the divided member, and a plurality of second fixtures fixed to the flange, the first fixture and the second fixture The body portion and the collar portion are fixed by engaging with each other.

According to the above aspect, the body and the collar are fixed by engaging the first fixture and the second fixture. Therefore, by engaging and disengaging the first fixture and the second fixture, the divided member can be easily attached and detached from the collar. As described above, according to the above aspect, it is possible to provide a drum that does not require any tools and can be more easily disassembled or assembled.

Here, the flange portion may have a guide portion that supports the divided member.

In this case, the divided member is supported by the guide portion, and the posture of the divided member during and after assembly can be stabilized. Therefore, disassembly work and assembly work can be made easier.

Further, an operation hole may be formed in the flange, and the first fixture may have a movable part, and the movable part may be visible from the outside in the axial direction of the flange through the operation hole. good.

In this case, the user can operate the movable part while viewing through the operation hole to engage the first fixture and the second fixture. In addition, compared to the case where the second fixture has a movable part, when the first fixture has a movable part, when the hand or arm is inserted into the drum through the operation hole, the movable part Easy access to the department. Therefore, disassembly work and assembly work can be made easier.

Further, the first fixture and the second fixture may be made of metal.

In this case, the divided member can be more firmly fixed to the flange, and deterioration of the first fixture and the second fixture can be suppressed.

Further, the first fixture includes a rotation axis fixed to the divided member, an operating portion rotatable around a central axis of the rotation axis, and an arm rotatable with respect to the operation portion. , and the second fixture may have a hook portion to which the arm is locked.

In this way, by using the first fixture and the second fixture as so-called snap locks, disassembly work and assembly work can be made easier.

Further, the first fixture includes a first mounting part fixed to the divided member, a rotation shaft fixed to the first mounting part, and a bar rotatable around the central axis of the rotation shaft. The second fixture has a second mounting part fixed to the collar part, a facing part facing the second mounting part with a gap in the radial direction, and the second fixture. It may also include a tightening screw that presses the bar located between the attachment part and the opposing part.

In this way, by using the first fixture and the second fixture as so-called tightening hooks, disassembly work and assembly work can be made easier.

Further, the first fixture includes a mounting portion fixed to the dividing member, an operating portion rotatable with respect to the mounting portion, and an arc-shaped locking portion integrally formed with the operating portion. The second fixture may include a hook portion to which the locking portion is locked.

In this way, by using the first fixture as a so-called crescent, disassembly work and assembly work can be made easier.

Further, the first fixture includes a mounting portion fixed to the dividing member, an operating portion rotatable with respect to the mounting portion, and a protrusion integrally formed with the operating portion. The second fixture may include a friction portion that contacts the protrusion in the radial direction and generates a frictional force with the protrusion.

In this way, by using the first fixture as a so-called cam latch handle, disassembly and assembly operations can be made easier.

Further, the first fixture includes a mounting portion fixed to the dividing member, a rotation shaft fixed to the mounting portion, and a C-shaped hook rotatable around the central axis of the rotation shaft. and an opening/closing member rotatably displaceable between an opening position and a closing position of the opening of the hook part, and the second fixture is a locking pin to which the hook part is locked. There may be.

In this way, by using a so-called eye hook as the first fixture, disassembly and assembly work can be made easier.

According to the above aspect of the present invention, it is possible to provide a drum that is easier to dismantle or assemble.

FIG. 2 is a longitudinal cross-sectional view of the drum according to the first embodiment. 2 is a view taken in the direction of arrow II in FIG. 1. FIG. FIG. 2 is an enlarged view of the vicinity of a first fixture and a second fixture in FIG. 1; FIG. 2 is a single item diagram of the guide member of FIG. 1; FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4; (a) is a diagram showing a state in which a plurality of divided members are combined. (b) is a diagram showing one divided member. FIG. 6B is a cross-sectional view taken along line VII-VII in FIG. 6(b). FIG. 2 is a perspective view of the first fixture and second fixture of FIG. 1; It is a figure of the 1st fixture and the 2nd fixture concerning a 2nd embodiment. It is a longitudinal sectional view of a drum according to a second embodiment, and is an enlarged view of the vicinity of a first fixture and a second fixture. It is a figure of the 1st fixture concerning a 3rd embodiment. It is a vertical sectional view of a drum according to a third embodiment, and is an enlarged view of the vicinity of a first fixture and a second fixture. It is a figure of the 1st fixture concerning a 4th embodiment. It is a longitudinal sectional view of a drum according to a fourth embodiment, and is an enlarged view of the vicinity of a first fixture and a second fixture. It is a figure of the 1st fixture concerning a 5th embodiment. It is a longitudinal sectional view of a drum according to a fifth embodiment, and is an enlarged view of the vicinity of a first fixture and a second fixture.

(First embodiment)
Hereinafter, the drum of the first embodiment will be described based on the drawings.
As shown in FIG. 1, the drum 1 includes a cylindrical body 2 and a collar 3 provided at both ends of the body 2.
Various cables are wound around the body 2. When winding cables, a predetermined tension is applied to the cables to prevent them from collapsing. For this reason, the body 2 is required to have enough rigidity to not be deformed by the tension of the cables. Furthermore, when the drum 1 is loaded onto a transport vehicle or the like, the collar 3 may be supported from below, so the collar 3 is also required to have rigidity.

On the other hand, if the drum 1 is to be stored or transported without the cables being wound around it, it is required to dismantle the drum 1 to reduce the overall volume. This is because the smaller the overall volume, the smaller the exclusive volume of the storage space and the more efficient transportation can be.
Therefore, the drum 1 of this embodiment is configured to ensure the rigidity of the body 2 and the collar 3, and to keep the volume small when disassembled. This will be explained in more detail below.

(direction definition)
Here, in this embodiment, the central axis of the trunk 2 is referred to as the central axis O. Further, the direction along the central axis O is simply referred to as the axial direction. In the axial direction, the side of the body 2 seen from the flange 3 is called the axially inner side, and the side of the flange 3 seen from the body 2 is called the axially outer side.
When viewed from the axial direction, the direction of rotation around the central axis O is called the circumferential direction, and the direction that intersects with the central axis O is called the radial direction. As shown in FIG. 1, a cross section along the central axis O is called a longitudinal cross section.

(Tsubabe)
As shown in FIG. 1, the drum 1 includes a pair of collar portions 3. As shown in FIG. The pair of collar portions 3 have similar configurations. The collar portion 3 includes a collar member 20 and a guide member 30. In this embodiment, the flange portion 3 is formed by fixing the separate flange member 20 and guide member 30 to each other. However, the flange portion 3 in which the flange member 20 and the guide member 30 are integrally formed may be adopted.

As shown in FIG. 2, the collar member 20 is formed into a disk shape when viewed from the axial direction. The outer diameter of the collar member 20 is larger than the outer diameter of the body section 2, and the collar member 20 extends radially outward from the end of the body section 2 in the axial direction.
As shown in FIGS. 1 to 3, the collar member 20 is formed with a shaft hole 21, a plurality of operation holes 22, an annular recess 23, and a counterbore 24.

As shown in FIG. 2, the shaft hole 21 is formed in the center of the collar member 20 in the radial direction. The shaft hole 21 passes through the collar member 20 in the axial direction. The shaft hole 21 is used, for example, to pass a rotating shaft of a feeding device when feeding out cables from the drum 1.
The operating hole 22 is located radially outside the shaft hole 21 and radially inside the body portion 2 . The operation hole 22 passes through the collar member 20 in the axial direction. A plurality of operation holes 22 are formed at intervals in the circumferential direction. Each operation hole 22 is arranged at a position corresponding to a first fixture 4a and a second fixture 4b, which will be described later. Although the first fixture 4a and the second fixture 4b are located inside the body 2, the first fixture 4a and the second fixture 4b are visible from the outside of the drum 1 through the operation hole 22. ing.

The operating hole 22 of this embodiment is formed in a substantially trapezoidal (fan-shaped) shape when viewed from the axial direction, and the width in the circumferential direction increases toward the outside in the radial direction. Note that the shape of the operation hole 22 can be changed as appropriate. However, the operation hole 22 is used when inserting a hand or arm inside the trunk 2 and operating the first fixture 4a. For this reason, the operation hole 22 is preferably large enough to allow a hand or arm to be inserted therein.

As shown in FIG. 3, the annular recess 23 is formed to be depressed from the axially inner side surface of the collar member 20 toward the axially outer side. The annular recess 23 is formed in an annular shape when viewed from the axial direction. A guide member 30 is fitted inside the annular recess 23 . Thereby, the position of the guide member 30 with respect to the collar member 20 is determined.
The counterbore hole 24 is formed to be depressed from the axially outer side surface of the collar member 20 toward the axially inner side. The end portion of the counterbore hole 24 continues into the annular recess 23 . The counterbore hole 24 is formed so that the bolt B can be inserted from the outside in the axial direction.

As shown in FIG. 4, the guide member 30 is formed into an annular shape when viewed from the axial direction. The guide members 30 are fixed to the pair of collar members 20, respectively. That is, the drum 1 has two guide members 30. The guide member 30 has a fitting part 31 and a guide part 32. The fitting portion 31 is fitted into the annular recess 23 of the collar member 20 (see FIG. 3). The fitting portion 31 is an axially outer end of the guide member 30 .

As shown in FIGS. 4 and 5, the fitting portion 31 is formed with a plurality of screw holes 31a extending in the axial direction. The plurality of screw holes 31a are formed at intervals in the circumferential direction. With the fitting part 31 fitted into the annular recess 23 of the collar member 20, the bolt B is screwed into the screw hole 31a through the counterbore hole 24, thereby fixing the guide member 30 to the collar member 20. There is. A female screw portion may be formed in advance on the inner peripheral surface of the screw hole 31a. Alternatively, the internal threaded portion may be formed by cutting the inner peripheral surface of the screw hole 31a when the bolt B is screwed into the threaded hole 31a.

The guide portion 32 is a recessed portion that is depressed from the axially inner end surface of the guide member 30 toward the axially outer side. The guide portion 32 is formed in an annular shape when viewed from the axial direction. By inserting the connecting portion 12 (described later) of the divided member 10 into the guide portion 32, the position of the divided member 10 with respect to the collar portion 3 is determined.

(torso)
As shown in FIG. 6, the body section 2 is composed of a plurality of (four in this embodiment) divided members 10. When viewed from the axial direction, each divided member 10 is formed in an arc shape. The end faces of the divided members 10 that are adjacent to each other in the circumferential direction are in contact with each other. By combining these divided members 10, one cylindrical body portion 2 is formed. When the drum 1 is disassembled, the volume of the drum 1 can be kept small by overlapping the divided members 10 with each other.

As shown in FIGS. 6 and 7, the dividing member 10 includes a main body portion 11 and a connecting portion 12. As shown in FIGS. The main body portion 11 and the connecting portion 12 are both formed in an arc shape when viewed from the axial direction. The main body part 11 is a part around which cables are wound around the outer peripheral surface 10a. The connecting portions 12 protrude from both ends of the main body portion 11 in the axial direction toward the outside in the axial direction (toward the collar portion 3). That is, two connecting portions 12 are formed for each divided member 10.

The outer diameter of the connecting portion 12 is smaller than the outer diameter of the main body portion 11, and the inner diameter of the connecting portion 12 is larger than the inner diameter of the main body portion 11. For this reason, a step 11b facing outward in the axial direction is formed at the connecting portion between the main body portion 11 and the connecting portion 12. The step 11b is an end surface of the main body portion 11 in the axial direction. By abutting the step 11b against the guide member 30, the attitude of the divided member 10 with respect to the collar portion 3 is stabilized (see FIG. 3).

As shown in FIGS. 6A and 6B, each of the divided members 10 of this embodiment has a first overlap part 14 and a second overlap part 15. The first overlap portion 14 is formed by a recess 14a shown in FIG. 6(b). The recessed portion 14a is recessed from the inner circumferential surface of the dividing member 10 toward the outside in the radial direction at the first end of the dividing member 10 in the circumferential direction. The second overlap portion 15 is formed by a recess 15a shown in FIG. 6(b). The recessed portion 15a is recessed from the outer circumferential surface 10a of the dividing member 10 toward the inner side in the radial direction at the second end of the dividing member 10 in the circumferential direction.

As shown in FIG. 6(a), when the body 2 is formed by combining a plurality of divided members 10, the first overlap portion 14 of one divided member 10 is different from that of the other divided member 10 adjacent in the circumferential direction. It overlaps with the second overlap part 15 of. At this time, when viewed from the axial direction, the first overlap part 14 is located on the outside of the second overlap part 15 in the radial direction. That is, the overlap portions 14 and 15 of the divided members 10 that are adjacent to each other in the circumferential direction overlap in the radial direction.

With this configuration, the relative positions of the divided members 10 in the radial direction are stabilized, and the rigidity of the body portion 2 can be further improved.
In addition, since the structure is such that adjacent divided members 10 are in contact with each other when viewed from the axial direction, when cables are wound around the body 2, deformation of the body 2 due to the tension of the cables can be prevented. I can do it.

(First fixture and second fixture)
As shown in FIG. 1, the drum 1 of this embodiment includes a plurality of first fixtures 4a and a plurality of second fixtures 4b. The first fixture 4a is fixed to the dividing member 10, and the second fixture 4b is fixed to the guide member 30. Two first fixtures 4a are provided for each divided member 10. The number of second fixtures 4b is the same as the number of first fixtures 4a. That is, the drum 1 of this embodiment includes eight first fixtures 4a and eight second fixtures 4b. However, the number of first fixtures 4a and second fixtures 4b can be changed as appropriate.

As shown in FIG. 8, the first fixture 4a and the second fixture 4b are snap locks. The first fixture 4a has a rotation axis 41, an operating section 42, and an arm 43. The rotation axis 41 is fixed to the dividing member 10. The operating portion 42 is rotatable relative to the dividing member 10 around the central axis C1 of the rotation axis 41. A pair of holes 42a are formed in the operating section 42. By inserting both ends of the arm 43 into each hole 42a, the arm 43 can rotate about the hole 42a with respect to the operating section 42. The arm 43 is shaped like a round bar curved into a C-shape.

The second fixture 4b includes a mounting portion 44 and a hook portion 45. The mounting portion 44 has two mounting holes 44a formed therein. The second fixture 4b is fixed to the guide member 30 by fixing a screw or the like (not shown) to the guide member 30 through the attachment hole 44a. The hook portion 45 is formed integrally with the attachment portion 44, and is curved so as to be convex toward the first fixture 4a. By locking the arm 43 to the hook portion 45, movement of the dividing member 10 inward in the axial direction with respect to the guide member 30 is restricted.

Note that the first fixture 4a and the second fixture 4b are arranged at the same position as the operation hole 22 of the collar portion 3 in the circumferential direction. Therefore, the first fixture 4a and the second fixture 4b are visible from the outside of the collar portion 3 in the axial direction through the operation hole 22.

(effect)
Next, the operation of the drum 1 configured as described above will be explained.

First, a method for assembling the drum 1 will be explained.
When assembling the drum 1, the guide member 30, the collar member 20, and the second fixture 4b are fixed to each other in advance. Further, the first fixture 4a is fixed to the dividing member 10 in advance.

Next, the dividing member 10 is attached to the collar portion 3 in the above state. Specifically, the connecting portion 12 of the divided member 10 is inserted into the guide portion 32 . Thereby, the attitude of the divided member 10 with respect to the collar portion 3 is stabilized. The remaining divided members 10 are also supported by the guide portions 32 in the same manner. At this time, the first overlap part 14 of any divided member 10 and the second overlap part 15 of the adjacent divided member 10 are made to overlap in the radial direction. In this way, by combining a plurality of divided members 10, a cylindrical body portion 2 is obtained.

Next, the user inserts his or her hand or arm through the operation hole 22 and operates the first fixture 4a. In this embodiment, the operating section 42 is pinched and rotated around the central axis C1 of the rotation axis 41, so that the operating section 42 stands up from the divided member 10. Then, the arm 43 of the first fixture 4a is engaged with the hook portion 45 of the second fixture 4b, and the operating unit 42 is again tilted toward the dividing member 10. As a result, the first fixture 4a and the second fixture 4b engage with each other, and the divided member 10 is fixed to the collar portion 3. By repeating the same operation for other divided members 10, the cylindrical body portion 2 is fixed to one collar portion 3. When performing such work, since the operation hole 22 is at the same position in the circumferential direction as the first fixture 4a and the second fixture 4b, it is difficult to engage the first fixture 4a and the second fixture 4b. Easy to match.

The drum 1 can be assembled by fixing the other flange 3 to the body 2 in the same manner.
When disassembling the drum 1, the user inserts his or her hand or arm through the operation hole 22 to operate the first fixture 4a and release the engagement with the second fixture 4b. Thereby, the divided member 10 becomes removable from the collar portion 3. By removing all the divided members 10 from the flange 3 and stacking the divided members 10 on top of each other, the volume of the entire disassembled drum 1 can be kept small.

As explained above, the drum 1 of the present embodiment includes a body 2 configured by a plurality of divided members 10 formed in an arc shape when viewed from the axial direction, and a collar provided at both ends of the body 2. 3, a plurality of first fixtures 4a each fixed to the dividing member 10, and a plurality of second fixtures 4b fixed to the collar 3. Then, the body 2 and the collar 3 are fixed by engaging the first fixture 4a and the second fixture 4b. Therefore, the divided member 10 can be easily attached and detached from the collar portion 3 by engaging and disengaging the first fixture 4a and the second fixture 4b. As described above, according to the present embodiment, it is possible to provide the drum 1 that does not require any tools and can be easily dismantled or assembled.

Furthermore, the collar portion 3 has a guide portion 32 that supports the divided member 10. Thereby, the divided member 10 is supported by the guide portion 32, and the posture of the divided member 10 during and after assembly can be stabilized. Therefore, disassembly work and assembly work can be made easier.

Further, an operation hole 22 is formed in the collar portion 3, and the first fixture 4a has an operation portion 42 and an arm 43, which are movable parts. The operating section 42 and the arm 43, which are movable sections, are visible from the outside in the axial direction of the collar section 3 through the operating hole 22. Thereby, the user can operate the movable part while viewing through the operation hole 22 and engage the first fixture 4a and the second fixture 4b. Also, compared to the case where the second fixture 4b has a movable part, it is easier to insert a hand or arm into the drum 1 through the operation hole 22 when the first fixture 4a has a movable part. Sometimes moving parts are easily accessible. Therefore, disassembly work and assembly work can be made easier.

Furthermore, since the first fixture 4a and the second fixture 4b are made of metal, the split member 10 can be more firmly fixed to the collar 3, and the first fixture 4a and the second fixture Deterioration of the fixture 4b can be suppressed.

Further, the first fixture 4a includes a rotation axis 41 fixed to the dividing member 10, an operation section 42 that is rotatable around the central axis C1 of the rotation axis 41, and a rotation axis that is rotatable with respect to the operation section 42. It has an arm 43. The second fixture 4b has a hook portion 45 to which the arm 43 is locked. In this way, by using the first fixture 4a and the second fixture 4b as snap locks, disassembly work and assembly work can be made easier.

(Second embodiment)
Next, a second embodiment according to the present invention will be described, which has the same basic configuration as the first embodiment. For this reason, similar configurations are given the same reference numerals and explanations thereof will be omitted, and only the different points will be explained.
In this embodiment, the types of the first fixture and the second fixture are different from those in the first embodiment.

As shown in FIG. 9, the first fixture 5a and the second fixture 5b of this embodiment are so-called tightening hooks. The first fixture 5a includes a first mounting portion 51, an operating portion 52, and a bar 53. The first mounting portion 51 has a rotation axis 51a and two first mounting holes 51b. The first fixture 5a is fixed to the divided member 10 by inserting screws or the like into the two first attachment holes 51b and screwing the screws to the divided member 10.

The rotation axis 51a rotatably supports the bar 53. A through hole (not shown) is formed at one end of the bar 53, through which the rotating shaft core 51a is inserted. An operating section 52 is provided at the other end of the bar 53. The operating portion 52 protrudes from the bar 53, and by pinching the operating portion 52, the user can rotate the bar 53 around the central axis C2 of the rotation axis 51a.
The second fixture 5b includes a second mounting portion 54, a locking portion 55, and a tightening screw 56. The second mounting portion 54 has two second mounting holes 54a. The second fixture 5b is fixed to the guide member 30 by inserting screws or the like into the two second attachment holes 54a and screwing the screws or the like to the guide member 30.

The locking portion 55 has a connecting portion 55a and a facing portion 55b. The opposing portion 55b faces the second mounting portion 54 with a gap in the radial direction, and the connecting portion 55a connects the opposing portion 55b and the second mounting portion 54. The tightening screw 56 is screwed into a screw hole formed in the facing portion 55b. When the tightening screw 56 is rotated with respect to this screw hole, the tightening screw 56 moves radially outward or radially inward.

As shown in FIG. 10, with the bar 53 disposed in the gap between the facing portion 55b and the second mounting portion 54, the tightening screw 56 is rotated relative to the screw hole. When moved radially outward, the tightening screw 56 presses the bar 53 against the second mounting portion 54 . In this way, by engaging the first fixture 5a and the second fixture 5b, the dividing member 10 and the guide member 30 are fixed.

As described above, the first fixture 5a of the present embodiment includes the first attachment part 51 fixed to the split member 10, the rotation axis 51a fixed to the first attachment part 51, and the rotation axis 51a fixed to the first attachment part 51. The bar 53 is rotatable around the central axis C2 of the bar 53. The second fixture 5b includes a second mounting portion 54 fixed to the collar portion 3, a facing portion 55b facing the second mounting portion 54 with a gap in the radial direction, and a second mounting portion 54. It has a tightening screw 56 that presses the bar 53 located between the bar 53 and the opposing portion 55b. In this way, by using the first fixture 5a and the second fixture 5b as tightening bolts, disassembly work and assembly work can be made easier.

Also in this embodiment, the first fixture 5a has a bar 53 which is a movable part, and the bar 53 is visible from the outside in the axial direction of the collar part 3 through the operation hole 22. Further, the first fixture 5a and the second fixture 5b are made of metal. With these configurations, the same effects as those described in the first embodiment can be obtained.

(Third embodiment)
Next, a third embodiment according to the present invention will be described, which has the same basic configuration as the first embodiment. Therefore, similar configurations will be given the same reference numerals and their explanations will be omitted, and only the different points will be explained.
In this embodiment, the types of the first fixture and the second fixture and the shape of the guide member 30 are different from the first embodiment.

As shown in FIG. 11, the first fixture 6a of this embodiment is a so-called crescent. The first fixture 6a includes a mounting portion 61, an operating portion 62, and a locking portion 63. Two mounting holes 61a are formed in the mounting portion 61. The first fixture 6a is fixed to the divided member 10 by inserting screws or the like into the two attachment holes 61a and fastening the screws to the divided member 10.

The operating portion 62 is rotatable within a predetermined angular range with respect to the mounting portion 61 around a central axis C3 of a rotation axis (not shown). The locking portion 63 is formed integrally with the operating portion 62 and is curved in an arc shape.
As shown in FIG. 12, the second fixture 6b has a hook portion 64 to which the locking portion 63 is locked. Further, the guide member 30 of this embodiment has a guide protrusion 33 that protrudes radially inward from its axially inner end, and the second fixture 6b is fixed to the guide protrusion 33. . By locking the locking portion 63 with the hook portion 64, movement of the divided member 10 toward the inner side in the axial direction with respect to the guide member 30 is restricted.

As explained above, the first fixture 6a of the present embodiment includes the mounting portion 61 fixed to the split member 10, the operating portion 62 that is rotatable with respect to the mounting portion 61, and the operating portion 62 integrally connected to the mounting portion 61. It has an arcuate locking portion 63 formed therein. The second fixture 6b has a hook portion 64 to which the locking portion 63 is locked. In this way, by using the first fixture 6a as a crescent, disassembly work and assembly work can be made easier.

In this embodiment as well, the first fixture 6a has an operating portion 62 and a locking portion 63, which are movable portions, and the operating portion 62 and the locking portion 63 are inserted from the axial outside of the collar portion 3 through the operation hole 22. It is visible. Further, the first fixture 6a and the second fixture 6b are made of metal. With these configurations, the same effects as those described in the first embodiment can be obtained.

(Fourth embodiment)
Next, a fourth embodiment according to the present invention will be described, which has the same basic configuration as the first embodiment. Therefore, similar configurations will be given the same reference numerals and their explanations will be omitted, and only the different points will be explained.
In this embodiment, the types of the first fixture and the second fixture and the shape of the guide member 30 are different from the first embodiment.

As shown in FIG. 13, the first fixture 7a of this embodiment is a so-called cam latch handle. The first fixture 7a includes a mounting portion 71, an operating portion 72, and a protrusion 73. Two mounting holes 71a are formed in the mounting portion 71. The first fixture 7a is fixed to the split member 10 by inserting screws or the like into the two attachment holes 71a and fastening the screws to the split member 10.

The operating portion 72 is rotatable within a predetermined angular range with respect to the mounting portion 71 around a central axis C4 of a rotation axis (not shown). The protrusion 73 is formed integrally with the operating section 72 and protrudes from the operating section 72.

As shown in FIG. 14, the guide member 30 of this embodiment has a guide protrusion 33 that protrudes radially inward from its axially inner end. A groove is formed in the guide protrusion 33, and the inner surface of the groove serves as a friction portion 34. When the protrusion 73 enters the groove of the guide protrusion 33, the protrusion 73 and the friction portion 34 come into contact in the radial direction. A frictional force is generated between the protrusion 73 and the frictional part 34, and this frictional force becomes a resistance force that resists separation of the dividing member 10 from the guide member 30. That is, in this embodiment, the guide member 30 acts as a second fixture that engages with the first fixture 7a.

As described above, the first fixture 7a of the present embodiment includes the mounting portion 71 fixed to the split member 10, the operating portion 72 that is rotatable with respect to the mounting portion 71, and the operating portion 72 integrally connected to the mounting portion 71. It has a protrusion 73 formed therein. The second fixture (guide member 30) has a friction portion 34 that contacts the protrusion 73 in the radial direction and generates a frictional force with the protrusion 73. In this way, by using the first fixture 7a as a cam latch handle, disassembly and assembly operations can be made easier.

Also in this embodiment, the first fixture 7a has an operating portion 72 and a protrusion 73 which are movable parts, and the operating portion 72 and the protrusion 73 are visible from the outside in the axial direction of the collar 3 through the operating hole 22. It becomes. Further, the first fixture 7a and the second fixture (guide member 30) may be formed of metal. With these configurations, the same effects as those described in the first embodiment can be obtained.

(Fifth embodiment)
Next, a fourth embodiment according to the present invention will be described, which has the same basic configuration as the first embodiment. Therefore, similar configurations will be given the same reference numerals and their explanations will be omitted, and only the different points will be explained.
In this embodiment, the types of the first fixture and the second fixture are different from those in the first embodiment.

As shown in FIGS. 15 and 16, the first fixture 8a of this embodiment is a so-called eye hook. The first fixture 8a includes a mounting portion 81, a rotation axis 82, a hook portion 83, and an opening/closing member 84. Two mounting holes 81a are formed in the mounting portion 81. The first fixture 8a is fixed to the divided member 10 by inserting screws or the like into the two attachment holes 81a and fastening the screws to the divided member 10.

The rotation axis 82 protrudes from the mounting portion 81 . The rotation axis 82 is inserted into the through hole 83a of the hook portion 83, so that the hook portion 83 can rotate around the central axis C5 of the rotation axis 82. The hook portion 83 is formed in a C-shape, and an opening/closing member 84 is arranged to close the opening of the hook portion 83. The opening/closing member 84 can be rotated between a position where the opening of the hook portion 83 is opened and a position where the opening is closed. The opening/closing member 84 is biased by a spring toward a position where the opening of the hook portion 83 is closed.

As shown in FIG. 16, the second fixture 8b is a locking pin that protrudes from the radially inner side surface of the guide member 30. By locking the hook part 83 with this locking pin, the first fixture 8a and the second fixture 8b are engaged, and the body part 2 and the collar part 3 are fixed.

As described above, the first fixture 8a of the present embodiment includes the mounting portion 81 fixed to the split member 10, the rotation axis 82 fixed to the attachment portion 81, and the central axis C5 of the rotation axis 82. It has a C-shaped hook portion 83 that is rotatable in the circumference, and an opening/closing member 84 that is rotatably displaceable between a position where the opening of the hook portion 83 is opened and a position where it is closed. The second fixture 8b is a locking pin to which the hook portion 83 is locked. In this way, by using the eye hook as the first fixture 8a, disassembly and assembly work can be made easier.

Also in this embodiment, the first fixture 8a has a hook portion 83 and an opening/closing member 84, which are movable parts, and the hook portion 83 and the opening/closing member 84 are visible from the outside in the axial direction of the collar portion 3 through the operation hole 22. It becomes. Further, the first fixture 8a and the second fixture 8b are made of metal. With these configurations, the same effects as those described in the first embodiment can be obtained.

Note that the technical scope of the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.

For example, in the embodiment described above, the collar member 20 and the guide member 30 are separate bodies, but they may be formed integrally.
Note that the "first fixture" and "second fixture" in the first to fifth embodiments are tangible members, and for example, the hole itself is excluded.

In addition, the components in the above-described embodiments may be replaced with well-known components as appropriate without departing from the spirit of the present invention, and the above-described embodiments and modifications may be combined as appropriate.

For example, out of a plurality of first fixtures and second fixtures included in the drum 1, some are the first fixtures 4a and second fixtures 4b of the first embodiment, and the others are the first fixtures 4a and second fixtures 4b of the second to fifth embodiments. It is good also as either the 1st fixture and the 2nd fixture. That is, one drum 1 may include multiple types of first fixtures and second fixtures.

1...Drum 2...Body part 3...Flame part 4a-8a...First fixture 4b-8b...Second fixture 10...Divided member 22...Operation hole 32...Guide part 34...Friction part 41...Rotation shaft center 42... Operation part 43...Arm 45...Hook part 51...First attachment part 51a...Rotation axis center 53...Bar 54...Second attachment part 55b...Opposing part 56...Tightening screw 61...Mounting part 62...Operation part 63...Locking Part 64...Hook part 71...Mounting part 72...Operation part 73...Protrusion part 81...Mounting part 82...Rotation axis 83...Hook part 84...Opening/closing member C1-C5...Center axis

Claims (8)

A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture ,
An operation hole is formed in the flange,
The first fixture has a movable part, and the movable part is visible from the outside in the axial direction of the collar part through the operation hole . A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture,
The first fixture includes a rotational axis fixed to the divided member, an operating section rotatable around a central axis of the rotational axis, and an arm rotatable with respect to the operating section. have,
The second fixture is a drum having a hook portion to which the arm is locked. A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture,
The first fixture includes a first mounting part fixed to the divided member, a rotation shaft fixed to the first mounting part, and a bar rotatable around the central axis of the rotation shaft. has
The second fixture includes a second mounting portion fixed to the collar portion, a facing portion facing the second mounting portion with a gap in the radial direction, and the second mounting portion and the facing portion. and a tightening screw for pressing the bar located between the drum. A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture,
The first fixture includes a mounting portion fixed to the dividing member, an operating portion rotatable with respect to the mounting portion, and an arc-shaped locking portion integrally formed with the operating portion. have,
The second fixture is a drum having a hook portion to which the locking portion is locked. A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture,
The first fixture has a mounting part fixed to the dividing member, an operating part rotatable with respect to the mounting part, and a protrusion integrally formed with the operating part,
The second fixture is a drum having a friction portion that contacts the protrusion in the radial direction and generates a frictional force with the protrusion. A body portion configured by a plurality of divided members formed in an arc shape when viewed from the axial direction;
a flange provided at both ends of the body;
a plurality of first fixtures each fixed to the divided member;
a plurality of second fixtures fixed to the collar;
The body and the collar are fixed by engagement of the first fixture and the second fixture, The first fixture includes a mounting portion fixed to the dividing member, a rotation shaft fixed to the mounting portion, and a C-shaped hook portion rotatable around the central axis of the rotation shaft. , an opening/closing member rotatably displaceable between an opening position and a closing position of the opening of the hook part,
The second fixture is a drum, and the second fixture is a locking pin to which the hook portion is locked. The drum according to any one of claims 1 to 6 , wherein the collar portion has a guide portion that supports the dividing member. 8. The drum according to claim 1, wherein the first fixture and the second fixture are made of metal.

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