adjusting member

Abstract

The adjusting member (1) has: a frame member (2) having a front shaft portion (21) and a support portion (23) supporting the front shaft portion (21); a moving shaft member (3) forming an insertion path (L) of a belt (B1) between the front shaft portion (21) and being supported by the support portion (23) to be movable in a direction of approach or a direction of departure with respect to the front shaft portion (21); and a positioning member (4) supported by the support portion (23) to be rotatably movable, the positioning member (4) having: a pressing surface (413) capable of facing the moving shaft member to limit movement of the moving shaft member in the direction of departure; and a guide surface (414) disposed on one side in a rotation direction of the positioning member with respect to the pressing surface in a state of being inclined with respect to the pressing surface, the guide surface pushing the moving shaft member in the direction of approach and guiding the moving shaft member to the pressing surface when the positioning member is rotatably moved on one side in the rotation direction.

Description

Technical Field

[0001] This utility model relates to an adjusting member for adjusting a belt. Background Technology

[0002] Conventionally, an adjusting member is installed on the belt body used to hold a user or item to adjust the length of the usable portion of the belt body. In such an adjusting member, the length of the usable portion of the belt body can be adjusted by locking the adjusting member after adjusting the amount by which the belt body is pulled out of the adjusting member.

[0003] For example, the adjusting member disclosed in Document 1 (US Patent No. 7,114,748) includes a frame member, a movable shaft member (belt retainer) for the belt to be wound around, and a positioning member for positioning the movable shaft member. When the adjusting member is locked, firstly, the user moves the movable shaft member in a predetermined direction, clamping the belt between the movable shaft member and the frame member. Then, the user rotates the positioning member, thereby restricting the movement of the movable shaft member relative to the frame member. Thus, the belt is secured to the adjusting member at the desired position.

[0004] However, the locking operation in the adjusting mechanism disclosed in Document 1 is complex. Therefore, when the load applied to the belt is large, it is difficult to perform the locking operation while being subjected to the resistance of the belt. Utility Model Content

[0005] The purpose of this invention is to provide an adjusting member that facilitates locking operations.

[0006] An adjusting member according to one aspect of this utility model comprises: a frame member having a fixed shaft portion and a support portion supporting the fixed shaft portion; a movable shaft member having a through-path of a belt between itself and the fixed shaft portion, and being supported by the support portion to be movable in a direction of approach or away from the fixed shaft portion; and a positioning member supported by the support portion to be rotatably movable, the positioning member having: a pressing surface that is oriented toward the movable shaft member to restrict movement of the movable shaft member in the direction of away; and a guide surface that is arranged at an inclination relative to the pressing surface on one side of the rotation direction of the positioning member relative to the pressing surface, wherein when the positioning member rotates to the side of the rotation direction, the guide surface pushes the movable shaft member toward the approach direction and guides the movable shaft member toward the pressing surface.

[0007] In the above [1], preferably, the angle of inclination of the guide surface relative to the pressing surface is greater than 90 degrees.

[0008] In the above [1] or [2], preferably, the pressing surface is configured to face outward radially about the rotation axis of the positioning member and to be orthogonal to the radial direction.

[0009] In any of the above [1] to [3], it is preferable that a plurality of protrusions are formed on the pressing surface.

[0010] In the above [4], the plurality of protrusions may also be arranged along the width direction of the belt.

[0011] In any of the above [1] to [5], preferably, the positioning member comprises: a main body having the pressing surface and the guiding surface; and an operating plate extending radially outward from the main body about the rotation axis of the positioning member. Attached Figure Description

[0012] Figure 1 This is a perspective view of an adjusting member according to one embodiment of the present invention.

[0013] Figure 2 This is an exploded perspective view showing the adjustment component of the above-described embodiment.

[0014] Figure 3 This is a perspective view showing the positioning component of the above-described embodiment.

[0015] Figure 4 This is a cross-sectional view of the adjusting member according to the above embodiment, and a diagram showing the locked state of the adjusting member.

[0016] Figure 5 This is a cross-sectional view of the adjusting member according to the above embodiment, and a diagram showing the locking and unlocking state of the adjusting member.

[0017] Figure 6 This is a cross-sectional view of the adjusting member according to the above embodiment, and is a diagram used to explain the locking operation of the adjusting member.

[0018] Figure 7 This is a perspective view of the adjusting component in a modified example.

[0019] Figure 8 This is an exploded perspective view of the adjusting component in a modified example. Detailed Implementation

[0020] Reference Figures 1 to 6 One embodiment of this utility model will be described.

[0021] like Figure 1 and Figure 2As shown, the adjusting member 1 of this embodiment includes: a frame member 2; a moving shaft member 3 supported by the frame member 2 and capable of moving in a predetermined direction; and a positioning member 4 supported by the frame member 2 and capable of rotating.

[0022] Furthermore, in this embodiment, belts B1 and B2 are mounted on the adjusting member 1 (see reference). Figure 4 The specific form of the belts B1 and B2 is not particularly limited, and any type of tape or belt can be used. In this embodiment, the adjustment member 1 can be fastened to a desired position in the length direction of the belt B1, thereby adjusting the length of the utilized portion of the belt B1, i.e., the main body B12.

[0023] (Structure of the adjusting component)

[0024] Reference Figures 1-4 The structure of the adjusting member 1 will be described. In the following description, three orthogonal axes, namely the X, Y, and Z directions, will be used. Furthermore, the X direction corresponds to the front-back direction of the adjusting member 1 (the direction in which the moving shaft member 3 can move), the Y direction corresponds to the left-right direction of the adjusting member 1 (the width direction of the belt B1), and the Z direction corresponds to the thickness direction of the adjusting member 1.

[0025] As described above, the adjusting member 1 includes a frame member 2, a moving shaft member 3, and a positioning member 4. These members are made of, for example, synthetic resin.

[0026] like Figure 2 and Figure 4 As shown, the frame member 2 includes: a front shaft portion 21 (fixed shaft portion of the present invention) disposed on one side (+X side) in the X direction; a rear shaft portion 22 disposed on the other side (-X side) in the X direction; and a support portion 23 that supports the front shaft portion 21 and the rear shaft portion 22 respectively.

[0027] The front shaft portion 21 has a rod-shaped section arranged along the Y direction. The cross-sectional shape of the front shaft portion 21 is, for example, generally rectangular. The front shaft portion 21 has an upper surface 211 facing the Z direction (+Z direction).

[0028] The rear shaft portion 22 forms a space between itself and the front shaft portion 21, allowing belt bodies B1 and B2 to pass through. Like the front shaft portion 21, the rear shaft portion 22 has a rod-shaped section arranged along the Y direction. The cross-sectional shape of the rear shaft portion 22 is, for example, approximately rectangular.

[0029] The support portion 23 has a pair of wall portions 23A and 23B facing each other in the Y direction. Wall portion 23A is connected to each end of the front shaft portion 21 and the rear shaft portion 22 on one side (-Y side) in the Y direction, and wall portion 23B is connected to each end of the front shaft portion 21 and the rear shaft portion 22 on the other side (+Y side) in the Y direction. Furthermore, wall portions 23A and 23B have a wall shape that is erected vertically from the front shaft portion 21 and the rear shaft portion 22 in the +Z direction.

[0030] Wall portions 23A and 23B have an elongated hole 231 for supporting the movable shaft member 3 and a hole 232 for supporting the positioning member 4. The elongated hole 231 is positioned at a +Z side relative to the front shaft portion 21 and extends through wall portions 23A and 23B in the Y direction. Furthermore, the elongated hole 231 extends along the X direction, and its +X side end is positioned to overlap with the front shaft portion 21 in the Z direction. The hole 232 is positioned at a +Z side relative to the rear shaft portion 22 and a -X side relative to the elongated hole 231, and extends through wall portions 23A and 23B in the Y direction. The cross-sectional shape of the hole 232 is, for example, circular.

[0031] In addition, the wall portions 23A and 23B may also have grooves 233 for guiding the rotating shaft portions 42A and 42B of the positioning member 4 (described later) into the hole 232 during the assembly of the adjusting member 1.

[0032] The movable shaft member 3 forms an insertion path L for the belt body B1 between itself and the front shaft portion 21, and is movable relative to the frame member 2 in the X direction. In this embodiment, the movable shaft member 3 is capable of moving within a movable range in the X direction defined by the length of the elongated hole 231 in the X direction.

[0033] Specifically, the movable shaft member 3 has a shaft body portion 31 and a pair of shaft ends 32A, 32B disposed on both sides of the shaft body portion 31 in the Y direction. The shaft body portion 31 has a rod shape arranged along the Y direction. The cross-sectional shape of the shaft body portion 31 is not particularly limited. For example, the shaft body portion 31 has a lower surface 312 facing the other side (-Z direction) and a side surface 311 facing the -X direction.

[0034] Shaft ends 32A and 32B protrude from the shaft body 31 in the Y direction to both sides. Shaft end 32A is inserted into the elongated hole 231 of the wall portion 23A, and shaft end 32B is inserted into the elongated hole 231 of the wall portion 23B. Furthermore, shaft ends 32A and 32B have a pair of flat surfaces 321 facing both sides in the Z direction and capable of sliding in the X direction relative to the inner surface of the elongated hole 231. Shaft ends 32A and 32B can move in the X direction within their respective elongated holes 231, thereby enabling the movable shaft member 3 to move in the X direction.

[0035] Furthermore, the Z-direction dimension of the shaft body 31 is larger than the Z-direction dimension of the elongated hole 231, thus preventing the movable shaft member 3 from falling off the frame member 2.

[0036] The positioning member 4 is rotatable relative to the frame member 2 about the rotation axis C. In this embodiment, the positioning member 4 can be positioned at a limiting position that restricts the movement of the moving axis member 3 (see reference). Figure 4 ) and the flipped position of the state after rotating approximately 180 degrees from the restricted position (see reference) Figure 5 The positioning member 4 rotates between the restricted position and the flipped position. Hereinafter, one side of the rotation direction of the positioning member 4 (the rotation direction from the restricted position to the flipped position) is defined as the -R direction, and the other side of the rotation direction of the positioning member 4 (the rotation direction from the flipped position to the restricted position) is defined as the +R direction. Furthermore, hereafter, the positioning member 4 is positioned at the restricted position (refer to...). Figure 4 The description is based on the posture of the positioning component 4 at that time.

[0037] Specifically, the positioning member 4 has a main body 41, a pair of rotating shafts 42A and 42B supporting the main body 41, and an operating piece 43 extending from the main body 41. The main body 41 is disposed between a pair of wall portions 23A and 23B of the frame member 2, and is formed to be housed between the pair of wall portions 23A and 23B. The main body 41 has a pair of side surfaces 411 facing both sides in the Y direction, an upper surface 412 facing the +Z direction, a pressing surface 413 facing the +X direction, a guide surface 414 disposed on the +R side relative to the pressing surface 413, and a rear end surface 415 facing the -X direction.

[0038] The pressing surface 413 is configured to face outwards in a radial direction centered on the rotation axis C and is orthogonal to this radial direction. This pressing surface 413 is located on the -X side relative to the moving shaft member 3, facing the moving shaft member 3 in the X direction. Additionally, as... Figure 3 As shown, a plurality of protrusions 413P are formed on the pressing surface 413. The plurality of protrusions 413P are arranged along the Y direction. Each protrusion 413P has a linear shape extending along the Z direction.

[0039] like Figure 4 As shown, the guide surface 414 is disposed on the +R side relative to the pressing surface 413, and is configured to be inclined relative to the pressing surface 413. The inclination angle θ of the guide surface 414 relative to the pressing surface 413 is greater than 90 degrees and less than 180 degrees. For example, the inclination angle θ of the guide surface 414 in this embodiment is 120 degrees to 150 degrees. A corner portion 416 is formed between the guide surface 414 and the pressing surface 413 in this embodiment.

[0040] Furthermore, in this embodiment, the portion of the main body 41 facing the -Z direction between the guide surface 414 and the rear end surface 415 should be formed in a way that avoids interference with the rear shaft portion 22. Additionally, as... Figure 3 As shown, in this embodiment, the main body 41 is formed with a weight-reducing hole 417 that opens in the -Z direction, and a portion of the weight-reducing hole 417 may also extend to the guide surface 414.

[0041] like Figure 2 As shown, the rotating shaft portions 42A and 42B protrude from each side 411 of the main body portion 41 in the Y direction and are inserted into each hole 232 of the wall portions 23A and 23B. Figure 4 As shown, the central axes of the rotating shaft portions 42A and 42B are aligned with the rotation axis C of the positioning member 4. Furthermore, the rotating shaft portions 42A and 42B are located on the -X side closer to the guide surface 414 of the main body portion 41.

[0042] The operating plate portion 43 extends radially outward from the main body portion 41, centered on the rotation axis C, at a position closer to the -R side than the pressing surface 413. This operating plate portion 43 has a plate shape with thickness in the rotation direction, and has a first surface 431 facing the -R direction and a second surface 432 facing the +R direction. The first surface 431 is continuously formed with the upper surface 412 of the main body portion 41. Furthermore, the operating plate portion 43 is positioned on the +Z side relative to the front shaft portion 21 and the moving shaft member 3, and is capable of covering the front shaft portion 21 and the moving shaft member 3.

[0043] (Action of the adjusting component)

[0044] Reference Figures 4-6 The operation of the adjusting member 1 will be explained. In the following description, belts B1 and B2 are mounted relative to the adjusting member 1. Depending on the method of use, belts B1 and B2 can be different belts from each other, or they can be the two ends of a single belt forming a loop.

[0045] The belt body B1 is suspended on the front shaft portion 21 and wrapped around the movable shaft member 3 through the through-path L between the front shaft portion 21 and the movable shaft member 3. The belt body B1 can move relative to the adjusting member 1 in the length direction of the belt body B1. Furthermore, the part of the belt body B1 that is pulled out from the adjusting member 1 and is located on the side closer to the front shaft portion 21 is called the pull-out part B11 of the belt body B1, and the part that can hold the pull-out part B11 between it and the front shaft portion 21 is called the main body part B12 of the belt body B1.

[0046] The belt B2 has an annular shape that can be closed by sewing or bonding while it is wrapped around the rear shaft 22.

[0047] Figure 4This diagram shows the locked state where the adjusting member 1 secures the belt body B1. When the adjusting member 1 is in the locked state, the movable shaft member 3 is positioned at the +X side end of the movable range defined by the elongated hole 231, in a secured position that secures the belt body B1 between itself and the front shaft portion 21. Specifically, the movable shaft member 3 is configured to at least partially overlap with the front shaft portion 21 in the Z direction, and the lower surface 312 of the movable shaft member 3 clamps the belt body B1 between itself and the upper surface 211 of the front shaft portion 21.

[0048] Furthermore, when the adjusting member 1 is in the locked state, the positioning member 4 is positioned in a limiting position that restricts the movement of the moving shaft member 3. Specifically, the pressing surface 413 is positioned on the -X side relative to the moving shaft member 3, facing the moving shaft member 3 in the X direction, thereby hindering the movement of the moving shaft member 3 in the -X direction. Here, the facing direction of the pressing surface 413 relative to the moving shaft member 3 is approximately aligned with the radial direction centered on the rotation axis C of the positioning member 4, thus suppressing accidental rotation of the positioning member 4. At this time, the pressing surface 413 clamps the belt B2 between itself and the side surface 311 of the moving shaft member 3.

[0049] Furthermore, when the adjusting member 1 is in the locked state, the tension F1 generated by the load of the user or the item is applied to the main body B12 of the belt body B1. At this time, the main body B12 of the belt body B1 presses the pull-out part B11 of the belt body B1 against the front shaft part 21.

[0050] With the adjusting member 1 released from its locked state, the user operates the positioning member 4. Specifically, the user applies pressure to the second surface 432 of the operating plate 43, thereby causing the positioning member 4 to rotate and move in the -R direction. At this time, the user can rotate and move the positioning member 4 in the -R direction to the flipped position (see reference). Figure 5 Alternatively, the positioning member 4 can be positioned at any rotational position near the flipped position. That is, the rotation of the positioning member 4 at this time only needs to be enough to release it from the state where the pressing surface 413 faces the side 311 of the moving shaft member 3 in the X direction. Thus, the positioning member 4 is released from the restricted position, and the adjusting member 1 changes from the locked state to the unlocked state.

[0051] When the adjusting member 1 is in the unlocked state, the user can move the belt body B1 relative to the adjusting member 1 in its length direction to adjust the amount of the pull-out portion B11 of the belt body B1. For example, when shortening the main body portion B12 of the belt body B1, such as when bundling goods, the operator pulls the pull-out portion B11, thereby increasing the amount of pull-out portion B11. Or, when extending the main body portion B12 of the belt body B1, such as when unpacking goods, the operator tilts the adjusting member 1, thereby using tension F1 to move the belt body B1, increasing the amount of the main body portion B12.

[0052] Here, when the belt B1 moves relative to the adjusting member 1, the belt B1 interferes with the moving shaft member 3, causing the moving shaft member 3 to move from the fastened position in the -X direction. As a result, the moving shaft member 3 is in a state away from the front shaft portion 21 in the X direction, and the passage L between the moving shaft member 3 and the front shaft portion 21 ensures a space that allows the belt B1 to move freely.

[0053] With the adjusting member 1 locked from the unlocked state, the user operates the positioning member 4. Specifically, the user applies pressure to the first surface 431 of the operating plate 43, causing the positioning member 4 to rotate and move in the +R direction. During the rotation of the positioning member 4, the guide surface 414 faces the moving shaft member 3 via the belt B1 (see reference). Figure 6 When the positioning member 4 is further rotated and moved in the +R direction from this state, the guide surface 414 pushes the moving shaft member 3 in the +X direction and guides the moving shaft member 3 to the pressing surface 413. That is, the moving shaft member 3 is pushed by the positioning member 4 and moves in the +X direction, and moves relative to the positioning member 4 in a manner that moves from the guide surface 414 over the corner 416 toward the pressing surface 413.

[0054] Therefore, the moving shaft component 3 is positioned in the fastened position, and the positioning component 4 is positioned in the restricted position. As a result, the adjusting component 1 is locked.

[0055] (Effects of this implementation method)

[0056] The adjusting member 1 of this embodiment includes: a frame member 2 having a front shaft portion 21 and a support portion 23 supporting the front shaft portion 21; a moving shaft member 3 having an insertion path L of a belt body B1 formed between it and the front shaft portion 21, and being supported by the support portion 23 so as to be movable in the approach direction (+X direction) or the away direction (-X direction) relative to the front shaft portion 21; and a positioning member 4 supported by the support portion 23 so as to be rotatably movable. The positioning member 4 has: a pressing surface 413 that is able to face the moving shaft member 3 so as to restrict the movement of the moving shaft member 3 in the away direction; and a guide surface 414 that is arranged in an inclined state relative to the pressing surface 413 on one side of the rotation direction of the positioning member 4 relative to the pressing surface 413. When the positioning member 4 rotates to one side of the rotation direction, the guide surface 414 pushes the moving shaft member 3 in the approach direction and guides the moving shaft member 3 to the pressing surface 413.

[0057] The belt B1 of the adjusting member 1 in this embodiment is wound around the moving shaft member 3 via the through-path L between the front shaft portion 21 and the moving shaft member 3. In the adjusting member 1 of this embodiment, when the positioning member 4 moves to one side of the rotational direction (+R direction), the moving shaft member 3 is pushed by the guide surface 414 of the positioning member 4 and moves toward the front shaft portion 21, and is positioned to fasten the belt B1 between itself and the front shaft portion 21 (fastening position). In addition, the pressing surface 413 of the positioning member 4 is positioned opposite the moving shaft member 3 (restriction position), restricting the movement of the moving shaft member 3. Thus, the belt B1 is fastened to the adjusting member 1. That is, in the adjusting member 1 of this embodiment, the operation of pushing the positioning member 4 to one side of the rotational direction (+R direction) simultaneously performs the movement of the moving shaft member 3 toward the fastening position and the movement of the positioning member 4 toward the restriction position. Therefore, in the adjusting member 1 of this embodiment, even when the load applied to the belt B1 is large, the locking operation is easy.

[0058] Furthermore, in the adjusting member 1 of this embodiment, the belt B1 can be clamped not only between the moving shaft member 3 and the front shaft portion 21, but also between the moving shaft member 3 and the pressing surface 413 of the positioning member 4. Therefore, the belt B1 can be securely fixed.

[0059] Furthermore, in the adjusting member 1 of this embodiment, the positioning member 4 restricts the movement of the moving shaft member 3. Therefore, even when the tension applied to the belt B1 is large, accidental movement of the moving shaft member 3 can be suppressed. Thus, it is possible to prevent the belts B1 and B2 from loosening their holding state of the items.

[0060] In this embodiment, the tilt angle θ of the guide surface 414 relative to the pressing surface 413 is greater than 90 degrees. In this structure, the aforementioned actions of the positioning member 4 can be appropriately realized.

[0061] In this embodiment, the pressing surface 413 is configured to face outward radially about the rotation axis C of the positioning member 4 and to be orthogonal to the radial direction. With this configuration, the pressing surface 413 can reliably restrict movement away from the forward axis portion 21. Furthermore, the pressing surface 413 can securely fasten the belt body B1 between itself and the forward axis portion 21.

[0062] In this embodiment, the pressing surface 413 has a plurality of protrusions 413P. Furthermore, the plurality of protrusions 413P are arranged along the width direction of the belt body B1. In this structure, the plurality of protrusions 413P are pressed against the belt body B1 respectively, thus enabling a more secure fastening of the belt body B1 to the moving shaft member 3.

[0063] The positioning member 4 of this embodiment includes: a main body 41 having a pressing surface 413 and a guiding surface 414; and an operating plate 43 extending radially outward from the main body 41 with respect to the rotation axis C of the positioning member 4. In this structure, when force is applied to the operating plate 43, the "lever principle" with the rotation axis C as the fulcrum can be utilized, thus reducing the force required to operate the positioning member 4.

[0064] The adjusting member 1 in this embodiment is made of resin, thus reducing its weight compared to conventional metal adjusting members. Furthermore, as described above, the adjusting member 1 of this embodiment can securely fix the belt B1, making it ideal for applications involving the bundling of goods subject to significant loads. Moreover, the manufacturing method of the adjusting member 1 is not particularly limited; the frame member 2 and the moving shaft member 3 can be injection molded together, and then a separately injection-molded positioning member 4 can be assembled onto the frame member 2.

[0065] (Modified Example)

[0066] In the above embodiment, two belts B1 and B2 are mounted on the frame member 2, but the present invention is not limited thereto. That is, the frame member 2 in the above embodiment has a front shaft portion 21 for attaching belt B1 and a rear shaft portion 22 for attaching belt B2, but the rear shaft portion 22 may be omitted.

[0067] For example, Figure 7 and Figure 8 This is a diagram showing the adjusting member 1A of the modified example. The adjusting member 1A of the modified example also includes a buckle 10 instead of the rear shaft portion 22 of the above embodiment. The buckle 10 includes a male member 110 integrally formed with the frame member 2A and a female member 120 that can be engaged with the male member 110.

[0068] The male member 110 has a base 111 connected to a pair of wall portions 23A, 23B and a pair of feet 112A, 112B extending from the base 111 in the -X direction.

[0069] The female component 120 has a housing portion 121 into which a pair of feet 112A, 112B are inserted, and a latching portion 122 supported at both ends by the housing portion 121. The housing portion 121 and the pair of feet 112A, 112B are configured to engage with each other. The strap B2 is hung on the latching portion 122.

[0070] In the adjusting member 1A of this modified example, not only can the length of the belt body B1 be adjusted, but the connection and disconnection between the belt body B1 and the belt body B2 can also be performed. Furthermore, the buckle 10 is not limited to... Figure 7 and Figure 8 The example only needs to have a general buckle structure.

[0071] The specific structures of the frame member 2, the moving shaft member 3, and the positioning member 4 in the above embodiments can also be modified. For example, the support structure of the frame member 2 supporting the moving shaft member 3 can utilize any sliding mechanism. In addition, the operating piece 43, the multiple protrusions 413P, etc., in the above embodiments can be omitted.

Claims

1. An adjusting member, wherein, The adjusting member includes: The frame member (2) has a fixed shaft portion (21) and a support portion (23) supporting the fixed shaft portion (21); The movable shaft member (3) forms an insertion path (L) of the belt (B1) between itself and the fixed shaft part (21), and is supported by the support part (23) so as to be movable in the approach direction or the away direction relative to the fixed shaft part (21). as well as The positioning member (4), which is supported by the support part (23) and is capable of rotational movement, The positioning member (4) has: The pressing surface (413) is oriented toward the movable shaft member (3) to restrict movement of the movable shaft member (3) in the departing direction; and The guide surface (414) is configured to be inclined relative to the pressing surface (413) on one side of the rotation direction of the positioning member (4) relative to the pressing surface (413). As the positioning member (4) rotates to one side of the rotation direction, the guide surface (414) pushes the moving shaft member (3) toward the approach direction and guides the moving shaft member (3) to the pressing surface (413).

2. The adjusting member according to claim 1, wherein, The guide surface (414) is tilted at an angle greater than 90 degrees relative to the pressing surface (413).

3. The adjusting member according to claim 1, wherein, The pressing surface (413) is configured to face outward in a radial direction centered on the rotation axis (C) of the positioning member (4) and to be orthogonal to the radial direction.

4. The adjusting member according to claim 1, wherein, A plurality of protrusions (413P) are formed on the pressing surface (413).

5. The adjusting member according to claim 4, wherein, The plurality of protrusions (413P) are arranged along the width direction of the belt (B1).

6. The adjusting member according to claim 1, wherein, The positioning component (4) comprises: The main body (41) has the pressing surface (413) and the guiding surface (414) formed thereon; and The operating plate (43) extends radially outward from the main body (41) towards the rotation axis (C) of the positioning member (4).

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