JP7177322B2 - belt tightener - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt tightening machine that prevents collapse of cargo placed on a trolley.

Conventionally, various devices have been proposed for preventing the collapse of cargo placed on a trolley.

For example, Patent Literature 1 discloses a belt for preventing cargo from collapsing, which is easily wound along the outer peripheral surface of cargo on the upper tier of a carriage.

Patent Literature 2 discloses a fastener for preventing collapse of cargo, which includes a belt-like or sheet-like band member wound around a group of packages and a connecting member that connects sparse ends to each other.

JP 2001-122322 Japanese Patent Application Laid-Open No. 2003-54625

However, both of the inventions disclosed in Cited Documents 1 and 2 have the problem that they are wound around the luggage and need to wrap around the luggage. In addition, when the perimeter of the luggage changes depending on the height, it is necessary to prepare a plurality of belts or the like.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple belt tightener that prevents the collapse of cargo piled up on a trolley during transportation.

In addition, the cargo collapse prevention device on the market, in which a belt is hung over a group of packages on a trolley and the belt is tightened, has a two-step operation of locking the belt to the cargo collapse prevention device and then tightening the belt. I needed it. Another object of the present invention is to provide a belt tightener which can start locking and tighten the belt at the same time when the operating handle of the belt tightener is turned.

A belt-tightening machine according to the present invention is a belt-tightening machine for preventing collapse of cargo loaded on a trolley, and comprises an attachment part for attaching to the trolley and a belt that is hung on the cargo to prevent the cargo from collapsing. , a take-up reel that biases the belt in a winding direction, a ratchet mechanism that restricts movement in the direction of loosening the belt, and a belt tightening section that is connected to the ratchet mechanism and winds up the belt, The belt is configured to be locked at the same time as the belt is tightened by operating the belt tightening part,
The belt tightening portion includes an outer circular portion fixed to the housing of the belt tightening device and an inner circular portion rotating in the outer circular portion, and the outer circular portion exits from the take-up reel. The belt has a first passing portion through which the belt passes, and a second passing portion that is a passage to the outside of the belt at a position facing the first passing portion, and the inner circular portion passes through the center of the second passing portion. and the belt travels between the take-up reel and the outside of the housing via the first passage portion, the belt passage, and the second passage portion, and the initial state wherein the passage of the belt composed of the first passing portion, the belt passage, and the second passing portion is substantially linear, and the end portion of the belt passage near the outer circumference of the inner circular portion is substantially right-angled; It is formed in an acute angle or a sawtooth shape, and is provided with a restraining portion that suppresses the rotation angle of the inner circular portion accompanying the operation of tightening the belt of the belt tightening portion to 360 degrees or less from the initial state, and is wound along with the rotation. A spiral spring mounted between the housing and the inner circular portion is provided between the housing and the inner circular portion .

A belt tightening machine is attached to the cart, the belt is stretched over the cargo on the cart, the end of the belt is connected to the end of the cart using metal fittings, etc., and the belt is tightened by operating the belt tightening part to tighten the belt. Prevent collapse of cargo. At that time, conventionally, the belt is tightened after the belt is locked, but according to the present invention, the belt is automatically locked by the tightening operation. In addition, since the rotation of the inner circular portion is suppressed to 360 degrees or less, it is easy to set the initial state, and the size of the belt tightener can be reduced. Further, since the spiral spring is provided between the outer circular portion and the inner circular portion, when the ratchet mechanism of the inner circular portion is released, it tries to automatically return to the initial state.

The belt tightener of the present invention is characterized in that an anti-slip member is provided on the outer periphery of the inner circular portion.

A non-slip member is provided on the outer circumference of the inner circular portion, so that when the inner circular portion rotates and the belt comes to hang on the outer circumference of the inner circular portion, the belt is substantially fixed to the inner circular portion by the non-slip member.

In the belt load tightening device of the present invention, the ratchet mechanism is composed of a ratchet gear that is coaxially coupled to the inner circular portion and a pawl that is biased toward the gear. It is characterized by having a release mechanism that makes it possible to rotate it.

A ratchet gear is coaxially coupled to the inner circular portion to regulate the direction of rotation of the inner circular portion. The rotation of the ratchet gear is restricted by the pawl biting into the ratchet gear. Then, the release mechanism separates the pawl from the gear to allow the gear to rotate freely, and by operating the release mechanism, the belt tightening the load can be easily removed.

Further, the belt-tightening machine of the present invention is characterized in that the releasing mechanism has a releasing/holding portion for maintaining the released state.

Since there is a release holding portion for holding the release state of the release mechanism, the release mechanism urged toward the gear can be maintained in the release state while releasing the release lever.

The belt loading machine of the present invention comprises: a fixed mounting portion contacting the lower end of an intermediate band on the rear portion of the truck; a movable mounting portion contacting the upper end of the intermediate band; It is characterized by comprising an elastic body that biases toward the mounting portion.

a fixed mounting portion contacting the lower end of an intermediate band provided at the rear portion of the carriage; a movable mounting portion contacting the upper end of the intermediate band; Since it has a body, it can be easily attached to a trolley.

The belt loading machine of the present invention is characterized in that the first fixed part is a back plate of a push handle erected on the loading platform of the truck or a loading platform attachment fixed to the loading platform of the truck.

The belt loading device can be easily attached to the base 1 fixed portion of the truck, that is, to the back plate of the push handle or to the loading platform attachment having an appropriate width.

The belt tightening machine of the present invention is characterized in that the loading platform additional tool is fixed by sandwiching the loading platform of the truck and has an L-shaped member for fixing the belt loading machine.

Since the loading platform attachment is configured to be fixed by sandwiching the loading platform of the trolley and has an L-shaped member for fixing the belt loading device, the loading platform attachment has a back plate and does not have a push handle. Cars can also be fitted with a belt-tightening device.

The belt loading machine of the present invention is characterized in that the loading platform attachment is fixed to the loading platform of the truck by means of an extension member inserted under the loading platform of the L-shaped member and a restraining member descending from the loading platform.

Since fixing of the loading platform accessory to the loading platform of the truck is performed by an extension member inserted under the loading platform of the L-shaped member and a restraining member descending onto the loading platform, it can be attached to various types of loading platforms.

The belt loading machine of the present invention is characterized in that the restraining member moves along the L-shaped member and is screwed to the L-shaped member through the elongated hole.

Since the holding member moves along the L-shaped member and is screwed to the L-shaped member through an elongated hole formed in the holding member, the holding member can be moved up and down and attached to a cargo bed of various thicknesses.

The belt loading machine of the present invention is characterized in that the holding member is biased so as to move along the L-shaped member and narrow the distance between it and the extension member.

The pressing member moves along the L-shaped member and is urged to narrow the distance between it and the extension member. It can be attached to a thick cargo bed.

It is the perspective view which looked at the belt fastening machine of this invention from the attachment part side. FIG. 4 is a cross-sectional view for explaining the path of the belt passing from the take-up reel to the belt tightening section; FIG. 5 is a cross-sectional view for explaining the route of the belt when the belt tightening portion is rotated to tighten the belt; FIG. 4 is an explanatory diagram of the relationship between the rotated inner circular portion and the belt; It is explanatory drawing of a ratchet mechanism and an automatic return mechanism. FIG. 10 is an explanatory diagram of a release holding unit in an initial state; FIG. 11 is an illustration of a release holding part sliding on a ratchet wheel; FIG. 5 is an explanatory diagram of a release holding part sliding on the outside of the ratchet wheel; FIG. 2 is a perspective view of the belt tightening device of the present invention as seen from the ratchet release lever side; It is explanatory drawing which fixes the belt loading machine of this invention to the truck provided with the pushing handle which has a back plate. It is explanatory drawing which fixes the belt loading machine of this invention to a flat trolley using a platform addition tool. It is explanatory drawing which looked at the loading platform attachment from the side which attaches a belt fastening machine. It is explanatory drawing which looked at the loading-bed additional tool from the loading-bed side. FIG. 4 is an explanatory diagram of a mechanism for urging the restraining plate downward; It is a figure which shows a mode that a belt fastening machine is attached to a loading-bed additional tool.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a belt tightening machine of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a belt tightening machine 10 according to the present invention. The mounting portions 3 and 4 of the main body of the belt tightener 10 on the right side of FIG. 1 are used when the belt tightener is attached to an intermediate strip 51 located in the middle of the handle at the rear of the carriage. In use, the movable mounting portion 4 of the mounting portion is hooked to the upper end of the intermediate strip 51, the belt loading device is pushed down, and the fixed mounting portion 3 is hooked to the lower end of the intermediate strip to fix it. Since the movable mounting portion 4 is urged toward the fixed mounting portion 3 by an elastic body such as a coil spring 5, the loading device 10 clamps the intermediate belt material between the movable mounting portion 4 and the fixed mounting portion 3 by the elastic force of the elastic body. It is clamped and fixed.

After fixing the cargo binding machine 10 to the truck, the belt 7 is stretched so as to cover the cargo placed on the truck, and the fixture 8 at the tip of the belt is fixed at a predetermined position in front of the truck. The belt 7 is urged in the take-up direction by a spiral spring incorporated in a belt load tightening device to be described later so as not to loosen the belt, but the urging force of the spiral spring is not large enough to prevent collapse of the load.

Therefore, in order to tighten the belt and prevent the cargo from collapsing, it is necessary to fix (lock) the belt to a device for tightening the belt. Conventionally, the belt is tightened by operating the tightening device after fixing the belt to the tightening device. The belt tightening machine 10 according to the present invention automatically fixes the belt to the belt tightening machine 10 at the same time when the belt tightening machine 10 starts tightening the belt by a mechanism described later.

The belt is tightened by turning the winding handle 6. - 特許庁Even if the winding handle 6 is released when the desired tightening force is reached, the belt will not come loose due to the built-in ratchet mechanism, which will be described later.

FIG. 2A is a cross-sectional view showing the take-up reel 11 holding the wound belt in the initial state and the inner circular portion 13 and the outer circular portion 14 constituting the belt tightening portion for tightening the belt. The take-up reel 11 is urged in the direction to take up the belt by an internal spiral spring. The belt 7 coming out of the take-up reel passes through the first passing portion 15 formed in the outer circular portion 14 constituting the belt tightening portion, and passes through the belt passage 17 formed as a guide groove passing through the center of the inner circular portion 13. , through a second passage portion 16 formed in the outer circular portion 14, and out of the belt tying machine. As shown in FIG. 2A, the first passing portion 15 and the second passing portion 16 are provided at positions facing each other across the belt passage 17 formed in the inner circular portion. come and go via an almost straight path between

In an initial state in which a path is formed so that the belt 7 exiting the take-up reel 11 passes through a substantially linear path and exits to the outside, the belt 7 moves from the take-up reel 11 to the outside by the spiral spring of the take-up reel. It can be pulled out without much resistance while receiving the force of rewinding.

Belt tightening will be described with reference to FIG. 2B. When pulling out the belt, hanging it on the load, attaching the end of the belt to the truck, and then tightening the belt, the inner circular portion 13 of the belt tightening portion is turned in the direction indicated by the arrow in the figure to tighten the belt. Here, when the belt is turned in the direction indicated by the arrow, if the belt is not locked to the inner circular portion, the inner circular portion will idle. In the present invention, the corners of the entrance and exit of the belt passage near the outer circumference of the inner circular portion are formed (formed) at substantially right angles, and when the inner circular portion 13 rotates, the belt is bent. At this portion, the belt receives a large frictional force, the belt 7 is fixed (locked) to the inner circular portion 13, and as the inner circular portion 13 rotates, the belt 7 hung on the cargo on the truck is tightened.

FIG. 3 is an explanatory view of a case in which the fixing of the inner circular portion and the belt is further devised. Ends 18 and 19 of the belt passage 17 near the outer circular portion of the belt passage are formed so that the portions in contact with the belt contact the belt at an acute angle. For example, the belt 7 is easily fixed to the inner circular portion 13 because the belt is bent at the end of the belt passage and the teeth bite into the belt by forming it in a serrated shape, for example. That is, the tightening portion and the belt are fixed (locked) at the same time that the inner circular portion rotates and tightening of the belt is started.

Furthermore, the fixing of the belt 7 to the inner circular portion 13 is facilitated by providing the non-slip member 131 on the outer circumference of the inner circular portion with which the belt contacts. It is preferable to attach a sheet of rubber, polyurethane, silicone, or the like as a non-slip member. An adhesive may be applied as an anti-slip member.

The ratchet mechanism will be described with reference to FIG. The ratchet mechanism coaxial with the inner circular portion 13 has a ratchet gear 20, a pawl portion main body 21 having a pawl portion 25 that engages the ratchet gear 20, and a U-shaped spring 22 that biases this toward the ratchet gear 20. have The pawl portion 25 is integrated with a member of the pawl portion main body 21 that releases the ratchet function, and the pawl portion main body 21 shown in FIG. It is biased towards gear 20 . The right end of the claw main body 21 is connected to a release lever 12 projecting outside the housing of the belt tightener 10 .

A spiral spring 27, one end of which is fixed to the housing, is incorporated in the inner circular portion 13 to urge the inner circular portion to return to the initial state. The part tries to automatically return to the initial state. Here, the start point and end point of rotation of the inner circular portion 13 are determined by the stopper 26 projecting into the groove of the inner circular portion, and the rotation angle of the inner circular portion is suppressed to 360 degrees or less.

By providing the stopper (stopping portion) 26, the initial position of the inner circular portion 13 which forms the passage of the belt substantially linearly can be clearly defined so that the belt 7 can pass smoothly. In addition, by suppressing the rotation of the inner circular portion to one rotation or less, the gap between the inner circular portion 13 and the outer circular portion 14 around which the tightened and pulled belt is wound can be strictly determined. The peripheral mechanism of the unit 14 can be made small.

Specifically, it is preferable to set the diameter of the inner circular portion 13 to 30 mm to 50 mm. When the diameter of the inner circular portion 13 is 30 mm to 50 mm, the maximum amount of tightening is 90 mm to 150 mm, and although 40 mm was used in the prototype, it was confirmed that the amount of tightening was sufficient.

5A, 5B, and 5C, a description will be given of a release holding portion that holds the release state of the release lever that constitutes the release mechanism. A holding portion 32 formed of a plate spring is attached to the claw portion main body 21 so as to overlap the claw portion main body 21 . In the initial state shown in FIG. 5A, the tip portion 34 of the holding portion 32 is inserted into the notch portion of the ratchet gear 20, and the pawl portion 25 is in a state in which the ratchet gear 20 can be locked.

As shown in FIG. 5B, when the inner circular portion 13 is rotated by the winding handle 6 in the direction of the arrow in FIG. It slides on the ratchet wheel 20. In this state, the pawl portion 25 can lock the ratchet gear 20 by the biasing force F _L directed toward the ratchet gear 20, so that the ratchet mechanism functions.

Here, when the release _lever 12 is driven in the direction of the arrow shown in FIG. The urging force F _L by the shape spring 22 puts it in a state of riding on the outer circumference of the ratchet gear. Then, the pawl portion 25 does not come into contact with the ratchet gear 20, and the ratchet gear becomes freely rotatable, thereby maintaining the ratchet released state.

FIG. 6 is a rear perspective view of the belt tightener 10 according to the present invention in its initial state. The release lever 12 seen in FIG. 6 is operated to move the pawl body 21 of the ratchet away from the ratchet wheel. A pawl portion body 21 connected to the release lever 12 is biased toward the ratchet gear by a U-shaped spring 22, so when the release lever 12 is released, the ratchet gear is locked again, but is released by the holding portion 32. state is maintained.

The belt tightening device 10 can be easily attached to the truck by the mounting portions 4 and 3, and after the belt is hung on the baggage on the truck, the belt is tightened by rotating the winding handle 6. - 特許庁When the belt 7 is to be removed, the belt 7 and the winding handle 6 are returned to their original positions by removing the fixture 8 at the tip of the belt 7 from the carriage and operating the release lever 12 .

FIG. 7 shows a case where the belt cargo fastening device according to the present invention is applied to cargo on a trolley. A belt tightener 10 is attached to the first fixed portion at one end of the truck. FIG. 7A shows how the belt tightening device 10 is attached to the back plate 51 of the hand push handle 50 of the trolley serving as the first fixing portion. A belt 7 coming out of a belt tightening machine is stretched and a fitting 8 at the tip thereof is hung on a predetermined place of a carriage. By rotating the winding handle 6, the belt can be easily tightened and collapse of the load can be prevented while the load is being transported on the trolley.

FIG. 7B shows an example of application to a flat truck having no push handle, in which the belt load tightener 10 is attached to a loading platform attachment 100, which will be described later, which serves as a first fixing portion to prevent cargo from collapsing. A belt 7 protruding from a belt loading machine 10 and a loading platform additional tool 100 is stretched, and a mounting tool 8 at the tip thereof is hung on a predetermined place of a carriage. By rotating the winding handle 6, the belt can be easily tightened and collapse of the load can be prevented while the load is being transported on the trolley.

FIG. 8A is a view of the loading platform accessory 100 viewed from the side to which the belt fastening device 10 is attached. The upper end of the L-shaped member 102 is bent to form an upper end fixing portion 1022 for mounting the movable mounting portion 4 of the belt tightener 10 . A bar 104 is provided at the lower end of the L-shaped member 102 to serve as a lower end fixing portion for mounting the fixed mounting portion 3 of the belt loading machine 10 . A square hole formed below the L-shaped member 102 restricts the vertical movement of the restraining member 101 .

A screw hole is prepared in the intermediate portion of the L-shaped member 102 and a fixing screw 103 is inserted therein. Two extension members are provided at the lower end of the L-shaped member toward the cargo bed side.

FIG. 8B is a view of the loading platform attachment 100 as seen from the loading platform side of the truck. Long holes 1012 are provided vertically in the left and right central portions of the restraining member 101 that sandwiches the cargo bed from above, and a fixing screw 103 is inserted therein. The fixing screw is fixed in the screw hole 105 of the L-shaped member 102 . The operation portion of the fixing screw 103 is made to have a size that can be easily turned by hand, and the fixing screw 103 can be tightened into the screw hole 105 of the L-shaped member 102 with sufficient torque.

FIG. 9 shows another embodiment for urging the retaining plate 1011 toward the extension member 1021. As shown in FIG. The elastic body 107 is inserted between the spring restraining plate 106 projecting from the L-shaped member 102 toward the cargo bed side and the restraining plate 1011 of the restraining member 101 to narrow the distance between the extension member 1021 of the L-shaped member and the restraining plate 1011 of the restraining member. to energize. A compression coil spring is suitable for the elastic body, but other materials may be used. Also, a tension spring may be inserted between the restraining plate 1011 and the extension member 1021 in order to bias the restraining plate 1011 and the extension member 2021 so as to narrow the distance between them. In that case, a member for attaching a tension spring to each of the restraining plate 1011 and the extension member 1021 is prepared.

FIG. 9 shows how the belt tightener 10 is fixed to the loading platform 60 using the loading platform attachment. The loading platform 60 is sandwiched between the extension member 2021 of the L-shaped member 102 inserted under the loading platform 60 and the holding plate 1011 of the holding member 101, and in a state where the loading platform additional component 100 is fixed, the fixing screw 103 is tightened to remove the loading platform additional component 100. is securely fixed to the loading platform 60. The movable mounting portion 4 of the belt tightening machine 10 is hung on the upper receiving portion 1022 of the fixed loading platform attachment 100 , the belt tightening machine 10 is lowered, and the fixed mounting portion 3 of the belt tightening machine 10 is attached to the bar 104 . to install.

When removing the belt 7, the belt 7 and the take-up handle 6 are automatically returned to their original positions by removing the fixture 8 at the tip of the belt 7 from the carriage and operating the release lever 12. - 特許庁

The embodiments described above are a part of the present invention, and embodiments including the technical idea of the present invention are included in the technical idea of the present invention.

1 housing cover A
2 housing cover B
3 Fixed mounting part 4 Movable mounting part 5 Elastic body (coil spring)
6 Winding handle 7 Belt 8 Mounting tool 10 Belt loading device 11 Winding reel 12 Release lever 13 Inner circular portion 14 Outer circular portion 15 First passage portion 16 Second passage portion 17 Belt passages 18, 19 Serrated end portion 20 Ratchet gear 21 Claw portion body 22 U-shaped spring 25 Claw portion 26 Stopper (stopping portion)
27 Winding spring 32 Release holding part 34 Tip part 35 Inclined part 50 Push handle 51 Back plate 60 Cargo bed 100 Cargo bed attachment 101 Holding member 105 Screw hole 106 Spring holding member 107 Spring 1011 Holding plate 1012 Long hole 102 L-shaped member 1021 Extension member 1022 Upper end fixing part 103 Fixing screw 104 Lower end fixing part

Claims (10)

A belt loading machine for preventing collapse of cargo loaded on a truck, comprising: a mounting portion for attaching to the truck; a belt that is hung on the cargo to prevent collapse of the cargo; a take-up reel for tensioning the belt, a ratchet mechanism for restricting movement of the belt in a loosening direction, and a belt tightening section connected to the ratchet mechanism for winding the belt, and operating the belt tightening section. The belt is configured to be locked at the same time as the belt is tightened,
The belt tightening portion includes an outer circular portion fixed to the housing of the belt tightening device and an inner circular portion rotating in the outer circular portion, and the outer circular portion exits from the take-up reel. The belt has a first passing portion through which the belt passes, and a second passing portion that is a passage to the outside of the belt at a position facing the first passing portion, and the inner circular portion passes through the center of the second passing portion. and the belt travels between the take-up reel and the outside of the housing via the first passage portion, the belt passage, and the second passage portion, and the initial state wherein the passage of the belt composed of the first passing portion, the belt passage, and the second passing portion is substantially linear, and the end portion of the belt passage near the outer circumference of the inner circular portion is substantially right-angled; It is formed in an acute angle or a sawtooth shape, and is provided with a restraining portion that suppresses the rotation angle of the inner circular portion accompanying the operation of tightening the belt of the belt tightening portion to 360 degrees or less from the initial state, and is wound along with the rotation. and a spiral spring mounted between the housing and the inner circular portion . 2. A belt fastening machine according to claim 1, wherein an anti-slip member is provided on the outer circumference of said inner circular portion . The ratchet mechanism is composed of a ratchet gear coaxially coupled to the inner circular portion and a pawl biased toward the gear, and releasing the pawl away from the ratchet gear to allow the gear to rotate freely. 3. The belt tightening machine according to claim 1 , further comprising a mechanism . 4. The belt tightening machine according to claim 3, wherein the release mechanism has a release holding portion for maintaining the release state . a fixed mounting portion contacting the lower end of a first fixing portion provided at one end of the carriage; a movable mounting portion contacting the upper end of the first fixing portion; and the movable mounting portion facing the fixed mounting portion. 5. The belt tightening machine according to claim 1, further comprising an elastic body for urging the belt. 6. The belt tightening machine according to claim 5, wherein the first fixed part is a back plate of a hand push handle erected on the loading platform of the truck or an additional loading platform fixed to the loading platform of the truck. . 7. The belt tightening machine according to claim 6, wherein the loading platform attachment is fixed by sandwiching the loading platform of the truck and has an L-shaped member for fixing the belt tightening machine. . 8. The apparatus according to claim 7, wherein the attachment of the loading platform to the loading platform of the truck is performed by an extension member of the L-shaped member inserted under the loading platform and a restraining member descending onto the loading platform. belt loader. 9. A belt tightener according to claim 8, wherein said restraining member moves along said L-shaped member and is screwed to said L-shaped member through an elongated hole formed in said restraining member . 9. A belt tightener according to claim 8, wherein said restraining member is biased to move along said L-shaped member and narrow the distance between said restraining member and said extension member .

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