Sub Reel

Abstract

To prevent an accident from occurring when a wire or the like breaks in a winch.SOLUTION: A sub-reel is used with a winch. The sub-reel has a drum around which a linear member or a strip member is wound. The sub-reel has a rotation driving part to apply a torque in a winding direction to the drum. The sub-reel has a locking part to suppress the drum rotation in a delivery direction and a switching part to switch between a lock state and a release state of the locking part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to Used with a winch Regarding subreels. [Background technology]

[0002] Traditionally, winches have been used to lift heavy objects such as automobiles. For example, winches are used to lift and load onto a tow truck an automobile that is unable or difficult to move due to an accident or breakdown. They are also used to lift automobiles, heavy machinery, and ships that have been submerged or fallen from a high place.

[0003] In such winches, a technology has been proposed in which a pull-out length detection unit that detects the pull-out length of the belt and a brake unit that changes the ability to pull the belt from the drum are provided, and when the pull-out length is short, the brake unit is loosened so that the belt can be easily pulled from the drum (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2021-138537 A Summary of the Invention [Problem to be solved by the invention]

[0005] The quality of the winch wire or rope may deteriorate over time. For example, the durability may decrease due to exposure to sunlight, snow, rainwater, water vapor, etc., or wear and tear. Such a decrease in durability may lead to the wire or rope being cut.

[0006] If a rope or other object breaks while a heavy object is being lifted by a winch, the heavy object will move in roughly the opposite direction to the direction of lifting. If a rope or other object breaks while a broken-down car is being lifted by a winch onto a tow truck, the car will slide down in the opposite direction to the direction of lifting. As a result, the car may hit some structure and be damaged. Furthermore, if workers are waiting or inspecting the car or other heavy object being lifted, there is a risk that the safety of the workers may be compromised. Furthermore, if a broken-down car is being lifted on the road and the car slides down, there is a risk of contact with a following vehicle or moving into the opposite lane.

[0007] The present invention has been made to solve the above-mentioned problems, and its object is to prevent accidents when a wire or the like is cut in a winch. [Means for solving the problem]

[0008] The present invention relates to achieve the above object. The sub-reel is used together with the winch and includes a drum on which a linear member or a strip-shaped member is wound; The linear member or band A winding section including a first biasing member for rotating the drum in a direction in which the shaped member is wound. a locking unit that restricts rotation of the drum in the payout direction; and a switching unit that switches between a locked state and an unlocked state of the locking unit. The locking portion rotates in synchronization with the drum. The locking portion and the drum have a rotation center that corresponds to each other. The sub reel according to the present invention comprises: The lock portion includes a shaft that engages with the drum and a gear provided on a portion of the shaft. and The switching unit has a moving portion that can move toward and away from the gear, and when at least a portion of the moving portion abuts against the gear, The above When the moving part is in a locked state and is no longer in contact with the gear, The above It is characterized by being in a released state. The sub reel according to the present invention comprises: The shaft is formed with a first recess extending in a longitudinal direction, and the inner peripheral surface of the drum is formed with a second recess formed to be paired with the first recess, The above Facing the first recess The aboveIt is characterized by having an engagement portion that is inserted between the second recesses. The sub reel according to the present invention comprises: The drum is The above A cylindrical portion around which a linear or strip-shaped member is wound, and a pair of wires are provided so as to sandwich one end and the other end of the cylindrical portion, and the wire or strip-shaped member is wound The above The device is configured to include a first plate and a second plate for fitting on the circumferential surface of the cylindrical portion. 、 The first plate is located on the switching part side It is characterized by being The sub reel according to the present invention comprises: The second plate has 1. Attached force The present invention is characterized in that a member is provided. The sub reel according to the present invention comprises the above The moving part moves close to the gear. The above A pin that can come into contact with a gear, and a second biasing means for biasing the pin in a direction to approach the gear. of 2 It is characterized by having a biasing member. The sub reel according to the present invention comprises: The switching unit is characterized by including a release state holding unit for holding the pin in a state separated from the gear. Effect of the Invention

[0009] According to the embodiment, it is possible to prevent accidents when the winch is cut. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a schematic cross-sectional view showing a sub reel according to the embodiment. [Diagram 2] FIG. 2 is a schematic cross-sectional view showing a sub reel according to the embodiment. [Diagram 3] FIG. 2 is a schematic cross-sectional view showing a sub reel according to the embodiment. [Figure 4] FIG. 2 is a schematic exploded perspective view showing the sub reel of the embodiment. [Diagram 5] 3A and 3B are a schematic view and a cross-sectional view showing a drum member according to an embodiment. [Figure 6] FIG. 2 is a schematic diagram showing a gear and a shaft of an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Sub reels according to first to fifth embodiments will be described with reference to FIGS. 1 to 6. FIG.

[0012] [First embodiment] The configuration of the sub reel 1 according to the first embodiment will be described with reference to Figures 1 to 4. Note that the sub reel in Figure 1 is an example, and does not exclude the inclusion of other configurations, and can be embodied in various forms.

[0013] (drum) As shown in Figures 1 to 6, the sub reel 1 has a drum around which a linear or belt-like member W (hereinafter referred to as "belt-like member W, etc.") is wound. The drum is composed of a combination of drum members D1 and D2. The drum member D1 is an integral member of a disk-shaped first plate and a cylindrical member having a smaller diameter than the first plate (see Figure 5). A through hole is provided in the center of the plate of the drum member D1, which leads to the cylindrical member. The drum member D2 is a plate (second plate) disposed opposite to the first plate of the drum member D1 so as to sandwich the cylindrical member.

[0014] (1st frame, 2nd recess) First frame 110a The fixing position of the first frame 110a is substantially on the opposite side to the protruding direction of the cylindrical member of the drum member D1. The first frame 110a is provided with a through hole for passing the shaft 122 described below. The through hole of the first frame 110a is formed at a position corresponding to the center position of the plate part of the drum member D1. The through hole provided at the center of the drum member D1 is generally cylindrical, but a groove part is further provided on the outer edge side of the plate part in a part of the inner circumferential surface of the through hole. This groove part will be described below as the "second recess X2".

[0015] (Shaft Gear 1st Recess) As shown in FIG. 4, a shaft 122 is passed through the through hole of the drum member D1. A gear 121 is provided on the shaft 122 at a position opposite the drum member D1. The gear 121 has teeth oriented in such a way as to stop rotation of the belt-shaped member W or the like in the payout direction when the gear 121 transitions to a locked state, which will be described later (see FIG. 4). The shaft 122 is passed through a first frame 110a disposed on the outer side (the cover member C1 side) of the drum member D1. As shown in FIG. 4 and FIG. 6, a first recess X1 is formed in the shaft 122 and extends in the longitudinal direction. This first recess X1 is formed in a shape generally similar to that of the second recess X2.

[0016] (Engagement part) Between the first recess X1 and the opposing second recess X2, an engagement portion (not shown) formed to fill the gap is inserted. For example, when a rectangular parallelepiped space is formed by the first recess X1 and the opposing second recess X2, the engagement portion is formed in a similar rectangular parallelepiped shape to fill the rectangular parallelepiped space. This causes the rotational motion of the drum to be transmitted to the shaft 122 via the engagement portion. The gear 121 also provided at one end of the shaft 122 is rotated. That is, the gear 121, the shaft 122, and the drum rotate integrally with the shaft 122.

[0017] (2nd frame / winding section) A second frame 110b is fixed to the drum member D2, i.e., the second plate. The fixed position of the second frame 110b is on the opposite side of the second plate to the first plate side. In other words, it is on the protruding direction side of the cylindrical member of the drum member D1. A winding part 123 is attached to the second frame 110b. In other words, the second frame 110b is sandwiched between the second plate (drum member D2) and the winding part 123.

[0018] The second frame 110b is provided with a through hole for passing the tip of the shaft 122. The through hole of the second frame 110b is formed at a position corresponding to the center position of the drum member D2 (second plate).

[0019] The winding section 123 rotates the entire drum in a direction to wind up the belt-shaped member W. The details are as follows. A through hole is provided on the center side of the winding part 123. The tip of the shaft 122 passes through this through hole. The tip side of the shaft 122 is connected to the winding part 123. The winding part 123 is disposed inside the case body. A first biasing member A second biasing member and a rotating body are provided (both not shown). The second biasing member is, for example, a spiral spring. That is, the rotating body is biased by the second biasing member in the direction of winding up the belt-shaped member W.

[0020] Since the second biasing member biases the rotor in the winding direction, the shaft 122 connected to the rotor is also biased in the same direction. When the shaft 122 is biased to rotate in this direction, the drum is also biased in that direction via the engagement portion. Therefore, the sub reel 1 is configured so that the belt-shaped member W is wound onto the drum by the internal winding portion 123.

[0021] 1 and 2, first frame 110a is provided with a switching unit that switches between a locked state and an unlocked state of a lock unit including gear 121. The switching unit includes lock pin 126, a guide holding unit 125 that guides and holds the sliding movement of lock pin 126, and an operation unit 124 for operating lock pin 126 by pulling it up.

[0022] Guide holding part 125 is attached to first frame 110a. Guide holding part 125 is provided with a through hole through which lock pin 126 passes. The movement direction of lock pin 126 is restricted by passing through the through hole of guide holding part 125. In other words, guide holding part 125 guides the movement of lock pin 126 toward gear 121 at the tip of lock pin 126. An operating part 124 for operating to pull up lock pin 126 is provided above the lock pin (upper in FIG. 1).

[0023] As shown in FIG. 1, when the lock pin 126 is in contact with the gear 121 or can be in contact with the teeth of the gear 121, rotation in the direction in which the belt-shaped material W is unwound is restricted. In other words, even if the belt-shaped material W is attempted to be unwound, the lock pin 126 comes into contact with the gear 121 and stops the rotation of the gear 121. Since the gear 121 rotates integrally with the drum member D1 via the engagement portion described above, if the rotation of the gear 121 stops, the drum will not rotate either. Therefore, the unwounding of the belt-shaped material W is restricted by the position of the lock pin 126. This state is the locked state of the sub reel 1.

[0024] In addition, in the locked state, rotation in the payout direction (counterclockwise rotation in FIG. 6) is restricted, but rotation in the winding direction (clockwise rotation in FIG. 6) is possible. This is because the tip side of the lock pin 126 slides along the slope of the teeth of the gear 121.

[0025] On the other hand, when the user pulls up the operating portion 124, the lock pin 126 does not abut against the gear 121. This is the released state of the sub reel 1.

[0026] 1 and other figures, guide holding part 125 is provided with a window into which a screw or the like for fixing to first frame 110a is inserted. A user can visually check whether guide holding part 125 is securely fixed to first frame 110a by looking at the window. This is because whether guide holding part 125 is securely fixed to first frame 110a affects the reliability of the locked state.

[0027] A lock pin 126 is attached to the gear 121 side inside the through hole of the guide holding portion 125. force do No. The second biasing member A first biasing member (not shown) is provided. The first biasing member is, for example, a coil spring. With this configuration, the locked state is formed unless the user holds the lock pin 126 in the pulled-up state via the operation unit 124.

[0028] The cover C1 may be structured so that the locked state can be maintained even if the user does not touch the operation unit 124. For example, the cover C1 may be configured so that when the operation unit 124 is rotated by a predetermined angle (such as 90°), it engages with any part of the cover C1 and maintains the unlocked state (a state in which the lock pin 126 is pulled up).

[0029] (Belt-shaped members, etc.) The belt-like member W of the sub-reel 1 is wound around a drum and sandwiched between a first plate and a second plate and housed therebetween. As the belt-like member W, either a linear member such as a wire or a belt-like member such as a belt sling is used. When a belt-like member is used, it is possible to prevent the member from being wound haphazardly. Even when a linear member is used, if it is made of a material that is flexible and strong, any kinking can be eliminated by kneading it.

[0030] (Mounting part) On the side of the sub-reel 1 opposite to the opening through which the strip-shaped member W is unwound, an attachment portion 127 is provided for engaging the sub-reel 1 with a fixed structure such as the bed of a tow truck.

[0031] [effect] This embodiment is a sub-reel used together with a winch. According to this embodiment, a locked state is formed in which the lock pin 126 and the gear 121 come into contact. In the locked state, rotation of the drum which rotates integrally with the gear 121 is restricted. In other words, when the sub-reel 1 is wound or unwound with a belt-shaped material W, the gear 121 and the shaft 122 also rotate in accordance with the rotation of the drum. When the gear 121 and the moving part of the switching part (e.g., the lock pin) cooperate to transition to the locked state in this state, rotation of the drum is restricted in the unwound direction of the belt-shaped material W.

[0032] By attaching the belt-shaped member W of the sub-reel 1 to the object to be lifted in the same manner as the wire of a winch, it is possible to prevent accidents that may occur if the wire of the winch is cut.

[0033] Also, the cylindrical member and the first plate are integrated in the drum member D1 because this side is subjected to a greater load compared to the drum member D2. That is, the drum member D1 side is the side where the gear 121 is provided, so when the drum rotates in the direction in which the belt-shaped member W is paid out in the locked state, a load is applied to the drum member D1 side. In the case of a configuration in which two plates are sandwiched at both ends of the cylindrical member of the drum and fixed with screws or the like, stress is concentrated at the contact point between the plate on the gear side and the screw, which may cause deformation or damage to the contact point. In this embodiment, the cylindrical member and the first plate are integrated in the drum member D1, so this risk can be eliminated.

[0034] [Second embodiment] The sub reel according to the second embodiment will be described. The sub reel of the second embodiment has a protrusion for fixing the operating unit 124 in the pulled-up state on the reciprocating path of the lock pin 126 in the cover C1. A pair of protrusions are provided along the direction in which the first and second plates of the drum member D1 face each other. The user can pull up the operating unit 124 and rotate it around the axis of the lock pin 126 to hang it on the protrusion. This makes it possible to maintain the released state without the user having to hold the operating unit 124 pulled up.

[0035] (Modification) In the first embodiment, the locking state is established by the lock pin 126 that slides, and the shaft 122 and gear 121 that rotate together with the drum. However, Other shapes It may be in this state.

[0036] In the first embodiment, the lock pin 126 is slidably moved. However, the present invention is not limited to this, and the movement path of the lock member does not have to be linear, and may be curved.

[0037] Also, the above embodiment is an independent sub-reel. However, the sub-reel and the winch may be configured as one unit. In this case, the drum on which the linear or strip-shaped member is wound is divided into a first drum area and a second drum area via a partition. The linear or strip-shaped member for pulling up is wound in the first drum area. The linear or strip-shaped member for preventing falling is wound in the second drum area. The winch is provided with a rotation drive unit for applying a rotational force to the drum in the winding direction and a lock unit for suppressing the rotation of the drum in the unwinding direction. The locked state is the same as above.

[0038] Although the embodiments of the present invention have been described, the above embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the invention and its equivalents described in the claims. [Explanation of symbols]

[0039] 1 Subreel 110a 1st frame 110b 2nd frame 121 Gear 122 Shaft 123 Winding section 124 Operation section 125 Guide holder 126 Lock pin 127 Mounting part D1 Drum parts D2 Drum parts W Belt-shaped components, etc.

Claims

1. A sub-reel used with a winch, a drum on which a linear or strip-shaped member is wound; a winding section including a first biasing member that rotates the drum in a direction in which the linear or strip-shaped member is wound; A locking portion that suppresses rotation of the drum in the payout direction; A switching unit that switches between a locked state and an unlocked state of the lock unit; Equipped with The lock portion rotates in synchronization with the drum, A sub-reel characterized in that the lock portion and the drum have a corresponding center of rotation.

2. The lock portion has a shaft that engages with the drum and a gear provided on a portion of the shaft, the switching unit has a moving part that can move toward and away from the gear, and transitions to the locked state when at least a part of the moving part comes into contact with the gear; 2. The sub reel according to claim 1, wherein the released state is achieved when the moving part is separated from the gear and does not come into contact with the gear.

3. The shaft has a first recess formed therein and extending in a longitudinal direction; A second recess is formed on the inner peripheral surface of the drum so as to be paired with the first recess, 3. The sub reel according to claim 2, further comprising an engagement portion that is inserted between the first recess and the second recess facing the first recess.

4. The drum is a cylindrical portion around which the linear or strip-shaped member is wound; The cylindrical portion includes a first plate and a second plate that are disposed to sandwich one end and the other end of the cylindrical portion and that are configured to hold the linear member or the strip-shaped member on a circumferential surface of the cylindrical portion, 4. The sub reel according to claim 1, wherein the first plate is disposed on the switching portion side.

5. 5. The sub reel according to claim 4, wherein the second plate is provided with the first biasing member.

6. The moving part is a pin that can move close to the gear and abut against the gear, 4. The sub reel according to claim 2, further comprising a second biasing member for biasing the pin in a direction approaching the gear.

7. 7. The sub reel according to claim 6, wherein the switching portion includes a release state holding portion for holding the pin in a state separated from the gear.

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