JPH068097U - Belt winding device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a belt winding device capable of preventing the belt from being rapidly wound when a hook is detached from a locked body such as a tonneau cover. A lock gear 60 is attached to the rotary drum 44 that is urged in the belt winding rotation direction by the urging force of the mainspring 38.
Is integrally formed, and the tooth portion 60 of the lock gear 60 is formed.
A lock lever 66 is arranged at a position facing A. When tension is applied to the belt 54, the tension sensing portion 66B of the lock lever 66 is pushed up by the belt 54, but when the tension of the belt 54 is released, the lock lever 66 is rotated by the urging force of the torsion coil spring 72. 66A engages with the tooth 60A. Therefore, the rotary drum 4
4, the rotation of the belt in the winding direction is locked, and the rotary drum 44
Does not rapidly rotate in the belt winding direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a belt winding device that winds a long belt in layers on a rotating drum by the urging force of a urging means, and is particularly suitable for use with a tonneau cover of a vehicle. Regarding the device.

[0002]

[Prior art]

 Conventionally, there is a vehicle provided with a tonneau cover used for concealing luggage in a luggage compartment. For example, the tonneau cover is arranged in a rolled-up state on the back side of the back seat of a so-called station wagon type vehicle, and it is pulled out as needed and the tip part is used by being locked by a hook near the hatchback. It is like this.

Further, recently, it has been considered to provide a tonneau cover for the same purpose also in a so-called coupe type vehicle having a back door in which a relatively large rear glass is fitted. Further, in this case, from the viewpoint of improving the operability, it is considered that the back door is opened and closed and the tonneau cover is opened and closed following the opening and closing. In this case, the hinge position of the back door and the hinge position of the tonneau cover do not match and they are misaligned. It is considered to be provided.

When the above-mentioned difference is absorbed by the belt retractor, a hook is provided at the front end of the belt of the retractor, and the hook is locked to the locked tool provided at the front end of the tonneau cover. Can be achieved. As a result, the tonneau cover is always subjected to a predetermined tension by the biasing force of the mainspring of the winding device, and the difference between the tip of the back door and the tip of the tonneau cover is increased as the back door is opened and closed. In case of change of the belt, the belt can be pulled out from the belt winding device as much as necessary and the difference can be absorbed.

[0005]

[Problems to be solved by the device]

 However, when the structure described above is adopted, the tonneau cover has a certain weight, and therefore the torque of the biasing means also becomes strong. For this reason, when the occupant removes the hook from the locked item of the tonneau cover and tries to take up the belt rapidly, the hook and the occupant may slip out of the hand and the belt and the hook may dance. Even if the back door is open, that is, the tonneau cover is also in the open state, if the occupant or unloaded luggage accidentally touches the belt, the hook may come off the tonneau cover. There is.

In consideration of the above facts, the present invention provides a belt winding device that can prevent the belt from being rapidly wound when the hook is disengaged from a locked body such as a tonneau cover. Is the purpose.

[0007]

[Means for Solving the Problems]

 The belt winding device according to the present invention includes a long belt having hooks that can be locked to a locked body attached to the tip and a case that is pivotally supported by a case to rotate the belt in layers. The lock unit includes a drum, a biasing unit that biases the rotating drum in the belt winding rotation direction, and a lock unit that is inactive when the belt tension is applied and is activated when the belt tension is released. In the operating state of the means, the rotation of the rotating drum in the belt winding direction is prevented or decelerated.

[0008]

[Action]

 According to the above configuration, when the belt is pulled out from the rotating drum against the urging force of the urging means in order to lock the hook to the locked body when the belt tension is applied, or the hook is locked. If the body remains locked, the locking means is deactivated. Therefore, the rotating drum does not prevent rotation in the belt winding direction or prevent deceleration rotation.

On the other hand, when the belt tension is released, for example, when the occupant removes the hook from the locked body and the hook falls off from the occupant's hand, the locking means is activated. Therefore, rotation of the rotary drum in the belt winding direction is prevented or decelerated. This prevents the rotating drum from rapidly rotating due to the urging force of the urging means, and the belt and the hook from dancing. Therefore, it is possible to prevent the hook from hitting the body of the occupant, for example.

As an example of the locked body, a tonneau cover for concealing the luggage placed in the luggage compartment of the vehicle can be considered.

[0011]

【Example】

 The belt winding device according to the first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 5, the vehicle 10 is provided with a back door 14 that can be opened and closed with the back door hinge 12 as the center of rotation, and the internal space thereof serves as a luggage compartment 16. A rear glass 18 having a relatively large area is fitted in the central portion of the back door 14.

A tonneau cover hinge 20 is provided at the upper end of both sides of the luggage compartment 16 and on the front side of the vehicle. A tonneau cover 22, which is a cloth-like and rectangular-shaped locked body, is rotatably disposed around the tonneau cover hinge 20 as a rotation center. Note that the tonneau cover 22 itself is not a type that is wound and stored.

Further, a locking tool 24 is attached to each of both sides of a tip end portion (end portion on the vehicle rear side) 22A of the tonneau cover 22. The locking tool 24 is formed by attaching both ends of a loop 26, the axis of which is bent in a U shape, to the tonneau cover 22 via stays 28.

A predetermined gap is provided between the position where the above-mentioned back door hinge 12 is provided and the position where the tonneau cover hinge 20 is provided. Due to this gap, belt winding devices 30 are provided on both sides of the rear end of the back door 14.

This will be briefly described below with reference to FIG. FIG. 4 schematically shows the back door 14 and the tonneau cover 22, and a predetermined gap P is provided between the back door hinge 12 of the back door 14 and the tonneau cover hinge 20 of the tonneau cover 22. In the fully closed state of the back door 14, the distance Q between the front end portion 14A of the back door 14 and the front end portion 22A of the tonneau cover 22 is substantially equal to zero. However, as the back door 14 approaches the fully open state, the distance between the front end portion 14A of the back door 14 and the front end portion 22A of the tonneau cover 22 gradually increases, and the opening angle θ of the back door 14 increases. Is Q '(> Q). Therefore, the belt winding device 30 is provided to absorb this difference (Q'-Q), and the structure thereof will be described in detail below.

As shown in FIG. 1, the belt winding device 30 includes a box-shaped case 32 and a box-shaped cover 34 that is fitted to the box-shaped case 32. It can be attached to both sides of the rear end of the back door 14 via flanges 36 of the.

A mainspring spring 38 having a predetermined torque is arranged in the case 32, and an outer end 38 A of the mainspring spring 38 is locked to a slit 42 of a locking portion 40 formed on an inner surface of the case 32. Has become. Further, the inner end 38B of the mainspring 38 is engaged with a slit 50 provided on a support shaft 48 of a rotating drum 44 described later. Therefore, the mainspring 38 urges the rotary drum 44 in the belt winding rotation direction (the direction of arrow A in FIGS. 2 and 3).

The rotary drum 44 is composed of a drum body 46 and a support shaft 48 formed on the shaft core thereof. The support shaft 48 has a narrowed axial end portion, and is pivotally supported in a shaft support hole 52 formed in the center of the bottom wall of the case 32. Further, the drum main body 46 of the rotary drum 44 is provided with two disc-shaped support plates 46A and 46B, and the belt 54 is wound between the support plates 46A and 46B in layers. There is. The belt 54 has an elongated shape, and a substantially C-shaped hook 56 is rotatably attached to the tip of the belt 54. Further, the belt 54 is configured to move within a slit 58 formed in the lower portion of the side wall of the case 32.

A lock gear 60 is coaxially formed integrally with one support plate 46B of the drum body 46. A circular hole 62 coaxial with the rotary drum 44 is also formed in the shaft core portion of the lock gear 60, and a tip end narrowed portion 64A of a shaft support pin 64 provided upright from the center of the bottom wall of the cover 34 is fitted therein. It is like this. It should be noted that a step is formed by making the distal end narrowing portion 64A and the base portion 64B of the shaft support pin 64 different in diameter, and the step is used for positioning during assembly.

A dogleg-shaped lock lever 66 is disposed below the lock gear 60 described above. The lock lever 66 includes an engaging portion 66A, a tension detecting portion 66B, and a support shaft portion 66C. One end portion of the support shaft portion 66C in the axial direction is fitted into a cylindrical support portion 68 that is erected from the lower portion of the bottom wall of the cover 34. Further, the other end of the support shaft portion 66C in the axial direction is axially supported by a small hole 70 formed in a lower portion of the bottom wall of the case 32. The tension sensor 66B is disposed on the belt 54 and normally interferes with the belt 54. Further, the engaging portion 66A is arranged so as to face the tooth portion 60A of the lock gear 60, and engages at a predetermined timing. When the engagement portion 66A of the lock lever 66 is engaged with the tooth portion 60A of the lock gear 60, the rotation of the lock gear 60 in the belt winding direction is prevented.

A torsion coil spring 72 is wound around one end of the lock lever 66 in the axial direction. One end 72A of the torsion coil spring 72 is locked to a pin 74 that is erected from the engaging portion 66A of the lock lever 66, and the other end 72B is erected from the lower portion of the bottom wall of the cover 34. It is locked to a pin (not shown). For this reason, the torsion coil spring 72 biases the engaging portion 66A of the lock lever 66 in a direction in which the engaging portion 66A of the lock lever 66 engages with the tooth portion of the lock gear 60 (direction of arrow B in FIGS. 2 and 3). The lock gear 60, the lock lever 66, and the torsion coil spring 72 described above correspond to the locking means in the present invention.

The operation of this embodiment will be described below. In a normal use state, the hook 56 is locked to the loop 26 of the tip portion 22A of the tonneau cover 22. Since the back door 14 is in the closed state (the state shown by the solid line in FIG. 4), the belt 54 is maximally wound around the belt winding device 30. Therefore, the tonneau cover 22 maintains the extended state under the predetermined tension of the mainspring spring 38. Therefore, the luggage under the tonneau cover 22 is concealed by the tonneau cover 22, and the rear glass 18 arranged on the back door 14 cannot be seen from the outside even if it is relatively large.

When the back door 14 is opened (indicated by the chain double-dashed line in FIG. 4) for occupant unloading the luggage from this state, the tip portion 14 A of the back door 14 and the tip of the tonneau cover 22 are accompanied by this. The gap with the portion 22A changes from Q to Q '. Therefore, the belt 54 is pulled out from the belt retractor 30. Therefore, even if the gap changes, a predetermined tension by the mainspring spring acts on the tonneau cover 22, so that a good extended state is maintained. Since the belt 54 is pulled out as the opening degree θ of the back door 14 increases, the biasing force of the mainspring 38 is accumulated and the loop 26 of the tonneau cover 22 and the belt 54 when the back door 14 is fully opened. The engagement state with the hook 56 at the tip of the is secured.

As shown in FIG. 2, when the back door 14 is opened and closed as described above, the tension of the mainspring spring 38 acts on the belt 54, so that the tension sensing portion 66 B of the lock lever 66 interferes with the belt 54. . For this reason, the lock lever 66 is in a state of being rotated by a predetermined angle around the support shaft portion 66C in the direction opposite to the arrow B direction in FIG. 2 against the biasing force of the torsion coil spring 72. Therefore, the engagement portion 66A of the lock lever 66 maintains a state (non-engagement state) separated from the tooth portion 60A of the lock gear 60. Therefore, the rotation of the rotary drum 44 in the winding direction is not blocked.

Next, when the back door 14 is open and the occupant removes the hook 56 from the loop 26 of the tonneau cover 22, the belt 54 is rapidly rotated by the accumulated urging force of the mainspring 38. Is about to be wound up. At this time, the hook 56 may separate from the occupant's hand by slipping or the like, and the operation in this case will be described below.

When the hook 56 is separated from the occupant's hand, the tension of the belt 54 is released at the same time. Therefore, as shown in FIG. 3, the lock lever 66 is rotated around the support shaft portion 66C in the direction of arrow B in FIG. 3 by the biasing force of the torsion coil spring 72. Therefore, the lock lever 66 is brought into a state shown by a two-dot chain line and a solid line, and the engaging portion 66A engages with the tooth portion 60A of the lock gear 60. Therefore, rotation of the rotary drum 44 in the belt winding direction is prevented. As a result, the belt 54 and the hook 56 are prevented from being wound around the rotating drum 44 while dancing.

When the belt 54 is wound again after the rotary drum 44 is locked, the occupant grips the hook 56 after the passenger grips the hook 56 again and slightly pulls out the belt 54 to release the locked state. If the belt 54 is wound while maintaining the above state, the belt 54 can be wound well on the rotary drum 44.

As described above, in this embodiment, since the lock lever 66 detects the loosened state of the belt 54, the rotation of the lock gear 60 (rotating drum 44) in the belt winding direction is instantaneously blocked. It is possible to prevent the belt 54 and the hook 56 from being wound up while dancing. Therefore, it is possible to prevent the hook 56 from hitting the occupant.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 6, this embodiment is characterized in that the rotating drum 44 is not prevented from rotating in the belt winding direction but is rotated at a reduced speed.

The support shaft 48 of the rotary drum 44 is formed so as to project toward the one support plate 46B side, and the torsion coil spring 76 is wound around this portion.

The torsion coil spring 76 includes a coil portion 76A, one end portion 76B and one end portion 76C that project from the coil portion 76A and that are spaced apart from each other in the radial direction. The coil portion 76A of the torsion coil spring 76 is wound around the projecting end portion 48A of the support shaft 48 of the rotary drum 44 with a space. One end portion 76B of the torsion coil spring 76 is inserted and locked in a cylindrical protrusion 78 that is erected from the center side portion of the bottom wall of the cover 34. The other end portion 76C of the torsion coil spring 76 is locked in a small hole 82 formed in the arm portion 80A of the lock lever 80. Therefore, the torsion coil spring 72 urges the lock lever 80 around its supporting shaft portion 80C in the direction of arrow C in FIGS. 7 and 8. The torsion coil spring 76 and the lock lever 80 described above correspond to the locking means in the present invention.

According to the above configuration, the basic operation is the same as that of the first embodiment, and therefore the description thereof is omitted. However, in the case where the belt 54 is pulled out from the rotary drum 44 (when the back door 14 is opened, etc.). Is in a state in which the tension sensing portion 80B of the lock lever 80 is pushed by the belt 54 and slightly rotated in the direction opposite to the arrow C direction as shown in FIG. Therefore, the coil portion 76A of the torsion coil spring 76 is wound around the support shaft 48 of the rotary drum 44 with some space. However, when the hook 56 is released from the occupant's hand, the belt 54 is loosened and the tension is released, so that the lock lever 80 is supported by the torsion coil spring 76 in the direction of arrow C in FIG. The torsion coil spring 76 is restored while rotating around the portion 80C. As a result, the coil portion 76A of the torsion coil spring 76 is tightened, and the support shaft 48 of the rotary drum 44 is tightened. As a result, resistance is imparted to the rotation of the rotary drum 44 in the belt winding direction, so that the rotary drum 44 is decelerated and rotated.

Therefore, similar to the above-described first embodiment, the effect that the belt 54 and the hook 56 can be prevented from dancing can be obtained. Further, in the case of this embodiment, the rotation of the rotating drum 44 in the belt winding direction is not prevented but is rotated at a reduced speed. Therefore, the occupant grips the hook 56 (or the belt 54) again and winds the belt. There is an advantage that the operation of winding the belt 54 around the take-up device 30 becomes unnecessary.

Next, a third embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

This embodiment is also characterized in that, like the second embodiment, the rotation of the rotary drum 44 is not blocked in the belt winding direction, but is reduced.

A lock gear 84 is coaxially formed integrally with the rotary drum 44 instead of the support plate 46B, and an engaging gear 86 having a smaller diameter than the lock gear 84 is provided at a position facing the tooth portion 84A. It is arranged. A pair of protrusions 88 is formed on one end surface of the engagement gear 86 so as to project into a pair of small holes 92 formed in a disc-shaped mass 90 arranged adjacent to the protrusion 88. There is. Therefore, the engagement gear 86 and the mass 90 rotate integrally.

Coaxial through holes 94 and 96 are formed in the engaging gear 86 and the mass 90, and the engaging gear 86 and the mass 90 are fitted into a support shaft 100 that is erected from one longitudinal end of the swing lever 98. Both are pivotally supported by being done. A groove 102 is formed on the peripheral surface of the tip end portion of the support shaft 100 of the swing lever 98, and an E-ring 104 is fitted into the groove 102.

A support shaft 106 penetrates through the other end of the swing lever 98 in the longitudinal direction, and one end of the support shaft 106 in the axial direction is a bearing plate 108 formed in the lower portion of the case 32. It is fitted into the through hole 110. As a result, the swing lever 98 is axially supported by the bearing plate 108. A torsion coil spring 112 is wound around the other end of the swing lever 98 in the axial direction of the support shaft 100. One end 112A of the torsion coil spring 112 is inserted and locked into a cylindrical protrusion 114 that is erected from the lower portion of the bottom wall of the cover 34. Further, the other end 112B of the torsion coil spring 112 is brought into contact with and locked to the lower end of the support shaft 100 of the swing lever 98. Therefore, the torsion coil spring 112 urges the swing lever 98 in the direction of arrow D in FIGS. The lock gear 84, the engaging gear 86, the swing lever 98, and the torsion coil spring 112 described above correspond to the locking means in the present invention.

According to the above configuration, the basic operation is the same as that of the first embodiment, and therefore the description thereof is omitted. However, in the case where the belt 54 is pulled out from the rotary drum 44 (when the back door 14 is opened, etc.). As shown in FIG. 10, the upper end corner surface of one end of the swing lever 98 in the longitudinal direction is pressed down by the belt 54 against the biasing force of the torsion coil spring 112. Therefore, the tooth portion 86A of the engagement gear 86 is separated from the tooth portion 84A of the lock gear 84. However, when the hook 56 is released from the occupant's hand, the slack tension of the belt 54 is released, and the swing lever 98 is pushed up to the lock gear 84 side by the urging force of the torsion coil spring 112. Therefore, the tooth portion 86A of the engagement gear 86 engages with the tooth portion 84A of the lock gear 84. Here, since the mass 90 is integrally attached to the engagement gear 86, it serves as resistance when the lock gear 84 rotates in the winding direction. Therefore, when the engagement gear 86 is engaged with the lock gear 84, the lock gear 84 is decelerated and rotated.

Therefore, similar to the above-described first embodiment, the effect that the belt 54 and the hook 56 can be prevented from dancing can be obtained. Further, as in the second embodiment, the rotation of the rotary drum 44 in the belt winding direction is not blocked, but is reduced. Therefore, the occupant grips the hook 56 (or the belt 54) again and the belt is rotated. There is an advantage that the operation of winding the belt 54 around the winding device 30 is not necessary.

Although the belt winding device 30 is applied to the tonneau cover 22 in the above-described embodiment, the present invention is not limited to this, and the mainspring is obtained by locking the hook 56 at the tip of the belt 54. A member that needs to be extended or expanded under a predetermined tension by applying the urging force of the spring 38, and a member that needs to prevent the belt 54 and the hook 56 from dancing when the hook 56 comes off. If so, the belt winding device 30 according to the present invention can be applied. For example, it can be applied to a awning provided on a tape measure or a window of a train, and further to a cord winding device such as an electric vacuum cleaner.

[0044]

[Effect of device]

 As described above, the belt winding device according to the present invention has an excellent effect that the belt can be prevented from being rapidly wound when the hook is detached from the locked body such as the tonneau cover. Have.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a belt winding device according to a first embodiment of the present invention.

FIG. 2 is an enlarged side view of an essential part showing the operation of the lock means when tension is applied to the belt.

FIG. 3 is an enlarged side view of an essential part corresponding to FIG. 2, showing the operation of the locking means when the tension of the belt is released.

FIG. 4 is an explanatory diagram for explaining the reason why the belt winding device of FIG. 1 is required.

5 is a perspective view showing the vicinity of a back door of a vehicle in which the belt winding device of FIG. 1 is arranged.

FIG. 6 is an exploded perspective view of a belt winding device according to a second embodiment of the present invention.

7 is an enlarged side view of essential parts showing the operation of the lock means in the state where tension is applied to the belt in the structure shown in FIG. 6. FIG.

FIG. 8 is an enlarged side view of an essential part corresponding to FIG. 7, showing the operation of the locking means when the tension of the belt is released.

FIG. 9 is an exploded perspective view of a belt winding device according to a third embodiment of the present invention.

10 is an enlarged side view of essential parts showing the operation of the locking means in the state where tension is applied to the belt in the structure shown in FIG. 9. FIG.

FIG. 11 is an enlarged side view of an essential part corresponding to FIG. 10, showing the operation of the locking means when the tension of the belt is released.

[Explanation of symbols]

 22 Tonneau Cover (Locked Body) 30 Belt Winding Device 38 Spring Spring (Biasing Means) 44 Rotating Drum 54 Belt 56 Hook 60 Lock Gear (Locking Means) 66 Lock Lever (Locking Means) 72 Torsion Coil Spring (Locking Means) 76 Torsion Coil spring (locking means) 80 Lock lever (locking means) 84 Lock gear (locking means) 86 Engagement gear (locking means) 98 Swing lever (locking means) 112 Torsion coil spring (locking means)

Claims (1)

[Scope of utility model registration request] 1. A long belt having hooks that can be locked to a locked body attached to a tip portion thereof, a rotary drum that is axially supported by a case, and winds the belt in layers, There is a biasing unit that biases the drum in the belt winding rotation direction, and a lock unit that is inactivated when the belt tension is applied and is activated when the belt tension is released. A belt winding device, characterized in that rotation of the rotating drum in the belt winding direction is prevented or decelerated.