bookbinder

Abstract

Provided is a device capable of supplying a lubricant to a surface at which two members meet. A device (1) such as a stapler is provided with a first member (2) having a first surface (20) and a second member (3) having a second surface (30) that meets the first surface (20) in part or entirely, the first member (2) and the second member (3) being configured to act in opposition to each other, the first member (2) having a flow path (5) of the lubricant provided with an opening (50) in the first surface (20) on a surface (23a) other than the first surface (20).

Description

Technical Field

[0001] It relates to a device having two components that move while being connected to each other through relative movement. Background Technology

[0002] In devices such as cam mechanisms, gear mechanisms, and hinge mechanisms, which consist of two components (a first component and a second component) that move while in contact with each other through relative movement, lubricants such as grease are sometimes applied to the sliding surfaces (contact surfaces) to improve the sliding properties and durability of the sliding surfaces (contact surfaces) of the two components. Furthermore, a technique has been proposed where a grease-accumulating recess is provided on the sliding surface of at least one of the first and second components to allow grease to be supplied to the sliding surface from the grease-accumulating recess (for example, see Patent Document 1).

[0003] In addition, the following technology is proposed: in a hinge mechanism having a shaft that serves as a rotating member and a bracket having a cylindrical portion that is wound around the outer periphery of the shaft and obtains sliding resistance by elastic force, a groove-shaped grease accumulation hole inclined relative to the rotation direction of the shaft passes through the cylindrical portion (for example, see Patent Document 2).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2011-214328

[0007] Patent Document 2: Japanese Patent No. 6272148 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, in the technique of forming a grease reservoir by providing recesses or through holes on the sliding surface of a component, there is a problem that the volume of the grease reservoir must be increased to maintain or contain a sufficient amount of grease in order to prevent the grease from drying out during repeated sliding. However, if the grease reservoir is increased, the area of ​​the sliding surface decreases, thus increasing the surface pressure and promoting wear. Moreover, it will lead to a decrease in the strength of the sliding surface.

[0010] Therefore, a device is provided to suppress the reduction of the area of ​​the sliding surface where the two components meet and to suppress the depletion of the lubricant on the sliding surface.

[0011] Methods for solving problems

[0012] To solve the above-mentioned problem, the device includes a first member having a first surface and a second member having a second surface partially or entirely connected to the first surface. The first member and the second member are configured to operate relative to each other, and the first member has a flow path for lubricant with an opening provided on the first surface.

[0013] In the device, lubricant is supplied from the opening through a flow path to the first surface of the first component, which is in contact with the second surface of the second component.

[0014] Invention Effects

[0015] According to the above-described apparatus, lubricant can be retained or contained in the flow path, thus eliminating the need to increase the opening of the first surface and suppressing the reduction of the sliding surface area. Furthermore, the required amount of lubricant can be maintained in the flow path, thereby preventing lubricant depletion. Attached Figure Description

[0016] Figure 1A This is a partial side view showing an example of a binder that is an embodiment of the device of the present invention.

[0017] Figure 1B This is a side view showing an example of a binder as an embodiment of the apparatus of the present invention.

[0018] Figure 2A This is a perspective view showing an example of the first component constituting the binder of this embodiment.

[0019] Figure 2B This is a cross-sectional view showing an example of the first component constituting the binder of this embodiment.

[0020] Figure 3A This is a perspective view showing a modified example of the first component.

[0021] Figure 3B This is a perspective view showing a modified example of the first component.

[0022] Figure 3C This is a perspective view showing a modified example of the first component.

[0023] Figure 3D This is a perspective view showing a modified example of the first component.

[0024] Figure 3E This is a perspective view showing a modified example of the first component.

[0025] Figure 3F This is a perspective view showing a modified example of the first component.

[0026] Figure 4A This is a side view showing an example of the internal structure of the injection tool, which is an embodiment of the device of the present invention.

[0027] Figure 4B This is a side view showing an example of a contact arm that forms the first component of the driving tool.

[0028] Figure 5A This is a side sectional view showing an example of the internal structure of a drill bit tool as an embodiment of the device of the present invention.

[0029] Figure 5B This is a perspective view showing an example of a gear that is the first component of a drill bit tool.

[0030] Figure 5C This is a perspective view showing an example of a gear that is the first component of a drill bit tool.

[0031] Figure 6A This is a side sectional view showing an example of the internal structure of a printer, which is an embodiment of the device of the present invention.

[0032] Figure 6B This is a top view showing an example of a movable plate that forms the first component of a printer.

[0033] Figure 6C This is a perspective view showing an example of a movable plate that constitutes the first component of a printer. Detailed Implementation

[0034] Hereinafter, embodiments of the device of the present invention will be described with reference to the accompanying drawings.

[0035] <An example of an embodiment of the device of the present invention>

[0036] Figure 1A This is a partial side view showing an example of a binder that is an embodiment of the device of the present invention. Figure 1B This is a side view showing an example of a binding device as an embodiment of the apparatus of the present invention. Additionally, Figure 2A This is a perspective view showing an example of the first component constituting the binder of this embodiment. Figure 2B This is a cross-sectional view showing an example of the first component constituting the binder of this embodiment.

[0037] Figure 1A The device 1 shown in this example is Figure 1B The binding device 11A shown includes a first member 2 having a first surface 20 and a second member 3 having a second surface 30 that is partially or wholly connected to the first surface 20.

[0038] The first component 2 is composed of a flat cam, and the first surface 20 is composed of a cam surface of a predetermined shape formed on the outer periphery of the first component 2. The second component 3 is a cam follower that follows the cam surface and is composed of a cylindrical shaft. The second surface 30 is composed of the outer peripheral surface of the second component 3.

[0039] The first component 2 and the second component 3 are configured to move relative to each other. The first component 2 rotates about the axis 21 as a fulcrum.

[0040] The second component 3 is disposed on the working component 31. In this example, the second component 3 is integrally disposed on the working component 31. The working component 31 is a plate-shaped component that rotates about the shaft 32 as a fulcrum.

[0041] The second component 3 is positioned at a predetermined distance from the shaft 32 and protrudes from the working component 31 in an orientation parallel to the shaft 32. Thus, the second component 3 moves along an arc with a radius equal to the distance from the shaft 32 to the second component 3 by means of the rotation of the working component 31 with the shaft 32 as the fulcrum.

[0042] The shaft 21 of the first component 2 and the shaft 32 of the working component 31 are not coaxial. In addition, the second component 3 is not coaxial with the shaft 21 of the first component 2. Thus, the second component 3 is configured such that it can move radially along the rotational motion of the first component 2, which is fulcrumped by the shaft 32, through the rotational motion of the working component 31.

[0043] Furthermore, the second member 3 is subjected to force in the direction in which the second surface 30 is pressed against the first surface 20. Moreover, if the first member 2 rotates about the axis 21, the second member 3, which slides along the first surface 20, moves in accordance with the shape of the first surface 20.

[0044] The working member 31 is provided with an actuating part 33 at a predetermined distance from the shaft 32, which applies force to the workpiece 4. The working member 31 rotates around the shaft 32 by the first member 2 rotating about the shaft 21 and the second member 3 moving according to the shape of the first surface 20. When the working member 31 rotates, the actuating part 33 moves along an arc with a radius equal to the distance from the shaft 32 to the actuating part 33, causing the workpiece 4 to move.

[0045] The first component 2 has a flow path 5 for retaining and allowing lubricants such as grease to pass through. The flow path 5 is provided in the flat first component 2 on a surface different from the first surface 20. Specifically, the flow path 5 is formed by a concave groove provided on one of the two surfaces of the first component 2, namely surface 23a, and not extending to the other surface, namely back surface 23b. The surface and back surface of the first component 2 are surfaces that are continuous with and substantially orthogonal to the first surface 20.

[0046] One end of the flow path 5 becomes an opening 50 in the first surface 20, through which the lubricant held within the flow path 5 can flow out to the sliding surface. The opening 50 is located in the first surface 20 in a portion of the thickness direction of the first member 2, as indicated by arrow S1. The thickness direction of the first member 2 is the direction that intersects with the direction of relative movement of the first member 2 and the second member 3.

[0047] For the first surface 20 of the first member 2, which slides on the second surface 30 of the second member 3, lubricant is supplied from the opening 50 through the flow path 5. This suppresses wear on the first surface 20 of the first member 2 and the second surface of the second member 3. Furthermore, since the flow path 5 is located outside the first surface 20, for example on the surface 23a of the first member 2, the length, width, and depth of the flow path 5 can be set more freely. Therefore, it is easier to form a flow path that can retain the required amount of lubricant. Thus, since the required amount of lubricant can be retained in the flow path 5, it is not necessary to form a large opening or recess on the sliding surface, i.e., the first surface 20, and the reduction of the sliding surface area can be suppressed. Moreover, if a sufficient amount of lubricant can be retained in the flow path 5, lubricant is continuously supplied from the flow path 5 to the opening 50 even with repeated sliding, thus suppressing lubricant depletion at the sliding surface.

[0048] The point 22, where the distance from the point where the second component 3 in the first surface 20 connects to the axis 21 to the axis 21 changes in the direction of arrow A by rotating the first component 2 around the axis 21, is set on the first surface 20.

[0049] If the first component 2 rotates in the direction of arrow A and the part where the second component 3 connects in the first surface 20 passes through the change point 22, the load applied to the first surface 20 and the second surface 30 increases. If the load applied to the first surface 20 and the second surface 30 increases, the first surface 20 and the second surface 30 are prone to wear.

[0050] Therefore, the opening 50 can be located upstream of the location where the maximum load is applied, within the range where the first surface 20 and the second surface 30 are in contact when the first component 2 and the second component 3 move relative to each other. In this example, during the rotation of the first component 2 in the direction of arrow A with the axis 21 as the fulcrum, the opening 50 is located upstream of the range E1 where the maximum load may be applied, downstream of the change point 22 (upstream of the direction in which the contact area of ​​the first surface 20 and the second surface 30 changes when the first component 2 and the second component 3 move relative to each other).

[0051] Therefore, lubricant can be supplied to the easily worn parts of the first surface 20 and the second surface 30, which can further suppress wear.

[0052] The first component 2 may also have multiple flow paths 5. Each flow path 5 is provided with multiple openings 50 corresponding to the multiple flow paths 5 in the range where the first surface 20 and the second surface 30 are in contact when the first component 2 and the second component 3 operate relative to each other.

[0053] The first component 2 may also include a receiving portion 6 that communicates with the flow path 5 and receives lubricant supplied to the flow path 5. The receiving portion 6 is provided in the flat first component 2 on a surface different from the first surface 20. In this example, the receiving portion 6 is constructed by providing a hole extending from the surface 23a to the back surface 23b of the first component 2. In this example, the volume of the receiving portion 6 is configured to be greater than or equal to the volume of the flow path 5, but may not be greater than the volume of the flow path 5. In a structure having multiple flow paths 5, each flow path 5 communicates with the receiving portion 6. It should be noted that the receiving portion 6 may also be constructed by providing a bottomed hole (recess) on the surface 23a of the first component 2 that does not extend to the back surface 23b. Figure 2A In the example shown, there are two flow paths 5 and one receiving section 6 connected to the two flow paths 5, but the receiving section 6 can also be provided in multiple flow paths 5 respectively (for example, two receiving sections 6 are provided relative to the two flow paths 5).

[0054] The first component 2 rotates around shaft 21, the second surface 30 of the second component 3 moves in the shape of the first surface 20, and the working component 31 rotates around shaft 32, thereby causing the first component 2 and the second component 3 to move relative to each other. The receiving part 6 is located at a point where the load applied to the first component 2 is low when the first component 2 and the second component 3 move relative to each other. That is, the receiving part 6 is located outside the area where the highest load (E1) is applied to the first component 2 and the shaft 21 are connected.

[0055] The stapler 11A includes a printing unit 12A for supplying needles (not shown) and ejecting needles into a bundle of paper, and a binding unit 13A for cutting and bending the needle feet after they are ejected by the printing unit 12A.

[0056] In the binding device 11A, the shaft of a motor (not shown) is connected to the first component 2, which rotates about the shaft 21 in the direction of arrow A. When the first component 2 rotates about the shaft 21, the second component 3, which rubs against the first surface 20, moves in the shape of the first surface 20. Furthermore, if the first component 2 rotates one revolution about the shaft 21 in the direction of arrow A, the working component 31, on which the second component 3 is located, swings, and the workpiece 4 reciprocates along arrow B. The working component 31 is forced by a spring (not shown) in the direction it is pressed against the first component 2, thus causing the second component 3 to move in the shape of the first surface 20.

[0057] The movement of the workpiece 4 is transmitted to the assembly unit 13A via a connecting rod, etc., causing the assembly unit 13A to move in a direction closer to and away from the dispensing unit 12A. If the first member 2 rotates about the axis 21 in the direction of arrow A, causing the second member 3 to move in the shape of the first surface 20, the working member 31 with the second member 3 to swing, and the workpiece 4 to reciprocate along arrow B, then the assembly unit 13A moves in a direction closer to the dispensing unit 12A, clamping the paper bundle between the assembly unit 13A and the dispensing unit 12A. Furthermore, by further rotating the first member 2 about the axis 21 in the direction of arrow A, the assembly unit 13A moves in a direction away from the dispensing unit 12A, releasing the clamping of the paper bundle.

[0058] Furthermore, after the paper bundle is clamped between the packing unit 13A and the output unit 12A, in the output unit 12A, the rotation of the shaft 21 in the direction of arrow A is transmitted via a connecting rod or the like to a driver (not shown), causing the needle's pin to pass through the paper bundle. Moreover, in the packing unit 13A, the rotation of the shaft 21 in the direction of arrow A is transmitted via a connecting rod or the like to a bending machine (not shown), bending the pin's pin that has passed through the paper bundle.

[0059] The binder 11A performs the action of binding the paper bundle by rotating the first member 2, which acts as a cam, one revolution in the direction of arrow A. The second member 3, which acts as a cam follower, moves in the shape of the first surface 20 by sliding along the first surface 20 of the first member 2 via the second surface 30.

[0060] For the first surface 20 of the first component 2 that slides on the second surface 30 of the second component 3, lubricant is supplied from the opening 50 through the flow path 5. As a result, wear on the first surface 20 of the first component 2 and the second surface of the second component 3 is suppressed.

[0061] The opening 50 of the flow path 5 is provided in a portion of the first surface 20 in the thickness direction of the first member 2. Therefore, even when the first member 2 is plate-shaped, the decrease in strength caused by the provision of the opening 50 is suppressed. In the binding device 11A, it is required to suppress the plate thickness of the first member 2 for the purpose of miniaturization. Even in this case, the decrease in strength caused by the provision of the opening 50 in the first surface 2 is suppressed. On the other hand, by providing the flow path 5 on one surface of the first member 2, such as surface 23a, it is not necessary to make the area of ​​the opening 50 exposed to the first surface 20 unnecessarily large, thus suppressing the increase in the plate thickness of the first member 2, the decrease in strength, and the accumulation of lubricant. It should be noted that, in this example, relative to along... Figure 2B The thickness of the first member 2 in the direction indicated by arrow S1 is 1.2 mm, the depth of the opening 50 along this direction is 0.1 mm, and the width is 0.3 mm, but is not limited to these dimensions.

[0062] Furthermore, a receiving portion 6 is provided on the surface 23a of the first member 2. The lubricant on the sliding surface acts in the direction of decreasing flow due to repeated sliding, but the lubricant held in the receiving portion 6 and the flow path 5 is supplied (replenished) to the sliding surface through the opening 50. Therefore, the receiving portion 6 contains an amount of lubricant that does not dry up at the sliding surface. In this example, the volume of the receiving portion 6 is configured to be greater than or equal to the volume of the flow path 5, which can suppress lubricant depletion for a long period. Moreover, because the receiving portion 6 is located at a location where the load applied to the first member 2 is low when the first member 2 and the second member 3 move relative to each other, the decrease in strength caused by the provision of the receiving portion 6 is suppressed. The lubricant in the receiving portion 6 can also be supplied to the sliding surface using surface tension.

[0063] In the second component 3, the working component 31 is used to... Figure 1A The shaft 32 shown rotates as a fulcrum, and the contact area between the second surface 30 and the first surface 20 changes. If the lubricant is consumed near the area where the first surface 20 and the second surface 30 are in contact when the first component 2 and the second component 3 move relative to each other, wear of the second surface 30 at the location where it contacts the first surface 20 at the location where the maximum load is applied may progress.

[0064] Therefore, by setting the opening 50 upstream of the load-bearing area, the consumption of lubricant at the load-bearing area is suppressed, and the wear of the second surface 30 at the location where the maximum load is applied and which is in contact with the first surface 20 is suppressed.

[0065] <Example of a variation of the first component>

[0066] Figures 3A to 3F This is a perspective view showing a modified example of the first component, and other embodiments of the flow path and housing.

[0067] like Figure 3A As shown, the flow path 5 can also have the following structure: it is not exposed to the surface 23a and back surface 23b of the first member 2, is disposed inside the first member 2, and communicates with the opening 50 disposed on the first surface 20. Furthermore, the receiving portion 6 is a bottomed recess that communicates with the flow path 5 and has a bottom formed on the back surface 23b of the first member 2, while being exposed on the surface 23a. However, the receiving portion 6 can also be disposed inside the first member 2 without being exposed to the surface 23a and back surface 23b.

[0068] Furthermore, the flow path 5 may not be formed by hollowing out the surface 23a and back surface 23b of the first component 2 or formed inside the first component 2, but rather as follows: Figure 3BAs shown, the surface 23a of the first member 2 has a pair of flow path forming protrusions 25 spaced apart by a predetermined interval, and is formed by recesses between the flow path forming protrusions 25. Alternatively, the receiving portion 6 may have a pair of receiving portion forming protrusions 26 communicating with the flow path forming protrusions 25 on the surface 23a of the first member 2, and is formed by recesses between the receiving portion forming protrusions 26 communicating with the flow path 5. Multiple receiving portions 6 may be provided, and multiple receiving portions 6 may be connected by the flow path 5.

[0069] like Figure 3C As shown, the containment section 6 can also be omitted, and the flow path 5 can serve as the containment section. Additionally, as... Figure 3D As shown, the flow path 5 can also increase in volume by widening the width along the surface 23a of the first member 2 as it exits from the opening 50, thereby increasing the amount of lubricant accumulated. Figure 3D In the example shown, flow path 5 can also be understood as serving as the containment department.

[0070] Furthermore, to increase the amount of lubricant accumulated by extending the length of flow path 5, it is also possible to... Figure 3E As shown, the structure is designed by folding the straight flow path 5 at multiple points. It can also be configured as follows: Figure 3F As shown, this makes the flow path 5 annular or spiral.

[0071] <Other embodiments of the device of the present invention>

[0072] Figure 4A This is a side view showing an example of the internal structure of the insertion tool, which is an embodiment of the device of the present invention. Figure 4B This is a side view of an example of a contact arm that constitutes the first component of the driving tool. The driving tool 11B is a device that drives consumables such as nails (not shown) into the target object by means of compressed air pressure.

[0073] The driving tool 11B detects the action of the contact arm 2B, which is pressed against the target object by the contact member 12B, and the action of the trigger 13B operated by the operator.

[0074] The contact arm 2B is mounted relative to the main body 14B in a manner that allows it to reciprocate in the direction indicated by arrow C. The contact arm 2B constitutes a first member and includes a cam surface 20B forming a first surface. In addition, the contact arm 2B includes a lubricant flow path 5 communicating with the cam surface 20B and a lubricant receiving portion 6 communicating with the flow path 5.

[0075] The inserting tool 11B has a cam follower 3B that moves in accordance with the cam surface 20B of the contact arm 2B. The cam follower 3B is an example of a second component, with a second surface 30B formed on the outer periphery of a cylindrical shape that contacts the cam surface 20B.

[0076] In the driving tool 11B, if the contact member 12B is pressed against the driving object and the contact arm 2B moves in the direction of arrow C, the cam surface 20B and the cam follower 3B abrade. Furthermore, as the cam follower 3B moves in accordance with the shape of the cam surface 20B, a switch (not shown) operates.

[0077] In the contact arm 2B, lubricant is supplied to the cam surface 20B that rubs against the cam follower 3B through the flow path 5. As a result, wear on the cam surface 20B and the cam follower 3B of the contact arm 2B is suppressed.

[0078] Figure 5A This is a side sectional view showing an example of the internal structure of a drill tool as an embodiment of the device of the present invention. Figure 5B This is a perspective view showing an example of a gear, which is the first component constituting a drill bit tool. Figure 5C This is a perspective view showing an example of a gear that is the first component of a drill bit tool. The drill bit tool 11C is a device that makes a hole in an object by rotating and vibrating a rotating body 12C, such as a drill chuck for attaching and detaching a drill bit (not shown), through the driving force of an electric motor 13C.

[0079] The drill tool 11C has a shaft 14C through which the driving force of the electric motor 13C is transmitted via a first gear 2C1, and a second gear 2C2 through which the driving force of the electric motor 13C is transmitted to the rotating body 12C via the shaft 14C.

[0080] The first gear 2C1 and the second gear 2C2 constitute a first component, each having teeth 20C forming a first surface. One or both of the first gear 2C1 and the second gear 2C2 have a lubricant flow path 5 that communicates with the teeth 20C via an opening 50. In the drill tool 11C, the gear meshing with the first gear 2C1 constitutes a second component, and the gear meshing with the second gear 2C2 also constitutes a second component.

[0081] In the first gear 2C1 and the second gear 2C2, lubricant is supplied to the meshing teeth 20C of the gears through the flow path 5. As a result, wear on the teeth 20C is suppressed.

[0082] Figure 6A This is a side sectional view showing an example of the internal structure of a printer, which is an embodiment of the device of the present invention. Figure 6B This is a top view showing an example of a movable plate that forms the first component of a printer. Figure 6C This is a perspective view showing an example of a movable plate that constitutes the first component of a printer. The printer 11D includes a cutter unit 12D for cutting the object to be printed and a movable plate 2D for operating the cutter unit 12D.

[0083] The movable plate 2D is mounted relative to the cutter unit 12D in a manner that allows it to reciprocate in the direction indicated by arrow D. The movable plate 2D constitutes a first component and has a cam surface 20D forming a first surface. In addition, the movable plate 2D has a lubricant flow path 5 communicating with the cam surface 20D and a lubricant receiving portion 6 communicating with the flow path 5.

[0084] The cutter unit 12D includes a cam follower 3D that moves along the cam surface 20D of the movable plate 2D. The cam follower 3D is an example of a second component, having a second surface 30D formed on the outer periphery of a cylindrical shape that contacts the cam surface 20D.

[0085] In printer 11D, if the cam follower 3D is rotated by the rotating body 13D, the cam surface 20D and the cam follower 3D rub against each other, and the moving plate 2D moves in the direction of arrow D.

[0086] In the moving plate 2D, lubricant is supplied to the cam surface 20D that rubs against the cam follower 3D through the flow path 5. As a result, wear on the cam surface 20D of the moving plate 2D and the cam follower 3D is suppressed.

[0087] Explanation of reference numerals in the attached figures

[0088] 1…device (11A…binding device), 12A…printing unit, 13A…binding unit, 2…first component, 20…first face, 21…axis, 22…change point, 23a…surface, 23b…back side, 3…second component, 30…second face, 31…working component, 32…axis, 33…acting part, 4…workpiece, 5…flow path, 50…opening, 6…receiving part, 11B…insertion tool, 2B…contact arm (first component), 20B…cam surface (first face), 12B…contact component, 13B…trigger, 14B…main Body, 3B…cam follower (second component), 30B…second face, 11C…piercing tool, 2C1…first gear (first component), 2C2…second gear (first component), 20C…tooth (first face), 12C…rotating body, 13C…motor, 14C…shaft, 11D…printer, 12D…cutter unit, 2D…moving plate (first component), 20D…cam face (first face), 3D…cam follower (second component), 30D…second face, 13D…rotating body, E1…part where maximum load is applied.

Claims

1. A binding device, comprising: The unit is used to eject the needle; and The assembly unit then bends the needles of the needles produced by the printing unit. in, The ejection unit has a cam, a shaft that serves as the fulcrum of rotation of the cam, and a cam follower. The cam has a first surface, and the cam follower has a second surface that is partially or entirely in contact with the first surface. The loading unit moves in a direction relative to the discharging unit as it approaches departure, through the relative action of the cam and the cam follower. The cam has: The lubricant flow path has an opening on the first surface, which is one end side, and a lubricant receiving part is provided on the other end side. and The point of change is the distance from the part of the first surface that contacts the cam follower to the shaft, which changes in the direction of increasing length. The opening is located downstream of the point of change.

2. The binding device according to claim 1, The opening is located on a portion of the thickness direction of the cam on the first surface, intersecting with the direction of relative movement of the cam and the cam follower.

3. The binding device according to claim 2, The cam has a plurality of flow paths with openings on the first surface.

4. The binding device according to claim 2, The flow path is located on a surface of the cam that is different from the first surface.

5. The binding device according to claim 2, The flow path is located inside the cam.

6. The binding device according to claim 1, The receiving part is located on a surface different from the first surface.

7. The binding device according to claim 1, The receiving part is disposed inside the cam.

8. The binding device according to claim 1, The volume of the receiving section is configured to be greater than or equal to the volume of the flow path.

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