JP5113546B2 - Tonneau cover device - Google Patents

Description

  The present invention relates to a tonneau cover device for covering, for example, a tonneau cover above a luggage compartment (tonneau portion) provided between the back of a seat and a back door in a hatchback-type automobile so that it cannot be visually recognized from the outside.

  Patent Document 1 discloses a tonneau cover device of this type. As shown in FIG. 11, the tonneau cover device disclosed in Patent Document 1 is provided with a tonneau cover winding device 100 behind the seat, winds and stores a sheet-like tonneau cover 101 in the winding device 100, and winds it. The tip of the tonneau cover 101 can be pulled out freely from the take-off device 100. Protrusions 102 called tonneau hooks are provided on both sides of the tip of the tonneau cover 101. The deck side trims 103 located on the left and right sides of the cargo compartment are provided with guide rails 104 extending in the front-rear direction of the cargo compartment, and the protrusion 102 guides the guide rails 104 when the tonneau cover 101 is pulled out or wound. It moves horizontally in the front-back direction.

As shown in FIG. 12A, a groove 105 is formed at the end of the guide rail 104 on the side close to the back door, and the tonneau cover 101 is pulled out (that is, the tonneau cover 101 is located above the luggage compartment). ), The projection 102 falls into the groove 105 and is temporarily held.
Further, a hook-shaped engaging / disengaging member 106 is rotatably provided inside the deck side trim 103, and when the back door is closed, the pressing portion 108 provided on the back door trim 107 is connected to the engaging / disengaging member 106. Press and rotate the back. As a result, as shown in FIG. 12B, the protrusion 102 is pushed out of the groove 105, and the protrusion 102 is locked at the distal end portion of the engaging / disengaging member 106. When the protrusion 102 is locked to the engaging / disengaging member 106, the tonneau cover 101 is not wound up, and the state where the upper part of the cargo compartment is shielded is maintained. Thereafter, when the back door is opened, the engaging / disengaging member 106 rotates in the reverse direction (counterclockwise in the figure), and the locking state of the protrusion 102 is released. Therefore, the tonneau cover 101 is wound around the winding device 100.
JP 2003-48486 A

In the conventional apparatus having the above-described configuration, when the back door is closed, the protrusion 102 is locked by the engagement / disengagement member 106, so that the tonneau cover 101 is not taken up even if there is vibration or the like. The state can be reliably maintained.
However, when the back door is in the open state, as shown in FIG. 12 (a), the projection 102 is only dropped into the groove 105, so that the groove of the groove can be obtained only by the operator's arm touching the tonneau cover. There was a risk that the protrusion 102 would escape from 105. When the locked state of the protrusion 102 by the recessed groove 105 is released, the tonneau cover 101 is automatically wound by the winding device 100. Therefore, the operator has to repeat the work of pulling out the tonneau cover 101 from the winding device 100 and dropping the protrusion 102 into the groove 105, which has a problem in operability.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a tonneau cover device that can securely hold a tonneau cover drawn out from a winding device and ensure good operability.

In order to achieve the above-described object, the invention of claim 1 includes a tonneau cover for covering an upper part of a cargo compartment of an automobile, a winding device for winding the tonneau cover, and a tip portion of the tonneau cover drawn out from the winding device. A tonneau cover device comprising: a tonneau cover engaging portion provided; and a tonneau cover holding mechanism that holds the tonneau cover engaging portion and holds the tonneau cover in a pulled-out state,
The tonneau cover holding mechanism is
A body that can be attached to the body of an automobile,
A swinging member that is swingably attached to the main body and provided with a locking part that detachably locks the tonneau cover engaging part;
An urging means for constantly urging the oscillating member to oscillate in one direction;
A swing cam member that is swingably mounted on the main body;
Cam biasing means for constantly biasing the swing cam member so as to swing in one direction;
A detachment preventing member for preventing detachment of the tonneau cover engaging part from the engaging part in cooperation with the engaging part of the swinging member;
Further, the swing member is provided with a cam contact, and the swing cam member is formed with a cam portion for guiding the cam contact,
The cam portion has a holding position that restricts the movement of the cam contact against the biasing force from the biasing means, and when the cam contact is held at the holding position, The locking portion of the swing member prevents the tonneau cover engaging portion from being detached in cooperation with the separation preventing member.

According to a second aspect of the present invention, on the premise of the first aspect, the engaging portion of the swing member is formed by a concave groove, the tonneau cover engaging portion is formed by a protrusion that enters the concave groove, and The separation preventing member is constituted by a guide rail of the tonneau cover,
When the cam contact is held at the holding position, the opening of the concave groove is arranged at a position facing the guide rail.

  According to a third aspect of the present invention, on the premise of the first or second aspect, the cam portion has an outer cam surface formed on the outer periphery of the swing cam member, and an inlet opening on one end side of the outer cam surface. An outlet is opened on the other end side of the outer cam surface, and a cam groove formed between the inlet and the outlet is included, and the holding position is formed in a part of the cam groove. .

According to a fourth aspect of the present invention, on the premise of the third aspect, the cam contactor is guided along the path of the following (A) to (E).
(A) When the tonneau cover engaging part is detached from the engaging part of the swinging member, the cam contact is in contact with the outer cam surface.
(B) The tonneau cover engaging portion that has moved in the pull-out direction by an external force is locked to the locking portion of the swing member, and the swing member resists the biasing force from the biasing means by the external force. When swung in the direction, the cam contact enters the cam groove from the inlet of the cam groove.
(C) When the external force in the pulling direction acting on the tonneau cover engaging portion is released, the swinging member swings in the reverse direction by the biasing force of the biasing member, and the cam contactor accompanies this swinging. Is guided to the holding position.
(D) When the swinging member swings with an external force in a direction against the biasing force from the biasing means, the cam contact is separated from the holding position, and the swinging cam member is attached to the cam. The cam contact is moved from the holding position by swinging with the biasing force of the biasing means.
(E) When the cam contact is moved from the holding position, the swinging member is swingable in the direction in which the biasing force is applied by the biasing means. The child comes out from the outlet of the cam groove and comes into contact with the outer cam surface again.

  According to a fifth aspect of the present invention, on the premise of the third or fourth aspect, an escape path is formed in the holding position of the cam groove by cutting the inner wall into an inclined surface, and the tonneau cover is wound in the winding direction. When an excessive external force is applied, the cam contactor moves over the inclined surface with the external force and moves from the holding position.

Furthermore, the invention of claim 6 is provided with a release arm swingably attached to the main body and a release member attached to the back door of the automobile, on the premise of any one of claims 1 to 5.
When the back door of the automobile is opened, the release member swings the release arm, and in conjunction with the release arm, the release arm presses and swings the swing cam member. The contactor moves from the holding position, and the tonneau cover engaging part is detached from the locking part.

  The invention of claim 7 is based on claim 6 and is characterized in that the release arm is separated from the swing cam member in a state where the back door of the automobile is closed.

  According to the first aspect of the present invention, when the cam contact is held at the holding position formed in the cam portion, the locking portion of the swinging member cooperates with the separation preventing member and the tonneau cover engaging portion. Therefore, regardless of the open / closed state of the back door, the pulled-out state of the tonneau cover can be securely held and good operability can be ensured.

  According to the second aspect of the present invention, the engaging portion of the swinging member is formed by the concave groove, the tonneau cover engaging portion is formed by the protrusion entering the concave groove, and the separation preventing member is guided by the tonneau cover. Since it is composed of rails, the structure is simple, the manufacture is easy, and the product cost can be reduced.

  According to the invention of claim 3, by forming the holding position not in the outer periphery of the swing cam member but in a part of the cam groove, there is no possibility of contact with or interference with surrounding objects, and the cam contact can be held. It can be securely held in position.

  According to the fourth aspect of the present invention, it is possible to realize smooth and wasteful guide of the cam contact in conjunction with the operation of the swing member and the swing cam member.

  According to the invention of claim 5, when an excessive external force in the winding direction acts on the tonneau cover, the cam contactor moves over the inclined surface with the external force and moves from the holding position. Can be detached, and an excessive external force can be released by moving the tonneau cover, and damage to each part of the apparatus can be suppressed.

  Furthermore, according to the invention of claim 6, the cam contact moves from the holding position in conjunction with the opening operation of the back door, and the tonneau cover engaging portion is detached from the locking portion. The winding device can be wound up.

  According to the seventh aspect of the present invention, since the release arm is separated from the swing cam member in a state where the back door of the automobile is closed, the vibration from the back door generated during the running of the automobile swings. As a result, the generation of abnormal noise during traveling in the apparatus can be suppressed without being transmitted to the cam member.

  As described above, according to the present invention, the tonneau cover pulled out from the winding device can be securely held and good operability can be ensured.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 11, the tonneau cover device of the present embodiment is also for covering the upper part of the luggage compartment (tonneau part) provided between the back of the seat of the automobile and the back door with the tonneau cover 101. A tonneau cover winding device 100 is provided behind the seat, and a sheet-like tonneau cover 101 is wound and stored in the winding device 100, and the leading end of the tonneau cover 101 is freely pulled out from the winding device 100. It has a configuration that can. Projections 102 are provided on both sides of the tip of the tonneau cover 101. In the present embodiment, the protrusion 102 serves as a tonneau cover engaging portion.

In addition, the deck side trims 103 on the left and right sides of the cargo compartment are provided with two guide rails 104 extending in the front-rear direction of the cargo compartment, and the protrusions 102 are arranged in a gap formed between the guide rails 104. ing. When the tonneau cover 101 is pulled out or wound, the protrusion 102 moves horizontally along the guide rail 104 in the front-rear direction.
In the tonneau cover device of the present embodiment, the groove 105 is not formed at the end of the guide rail 104 on the side close to the back door, and the tonneau cover holding mechanism 1 is provided instead. The tonneau cover holding mechanism 1 is a mechanism for holding the protrusion 102 (toner cover engaging portion) and holding the tonneau cover 101 in a pulled-out state.

FIGS. 1 to 3 are views showing the structure of the tonneau cover holding mechanism. FIGS. 1 and 2 are perspective views as seen from different viewpoints, and FIG. 3 is a front view.
As shown in these drawings, the tonneau cover holding mechanism includes a main body 10, a swinging member 20, a swinging cam member 30, and a release arm 50. The main body 10 is attached to the deck side trim 103 shown in FIG. 11 directly or indirectly through another member.

  The swing member 20 is mounted on the main body 10 via a support shaft 21 so as to be swingable. The swinging member 20 is always urged by a torsion coil spring (biasing means) 22 fitted on the support shaft 21 so as to oscillate in one direction (counterclockwise in FIG. 3). As shown in FIG. 4, the swing member 20 is formed with a concave groove (locking portion) 23 for releasably locking the protrusion 102 on a part of the outer periphery. A cam contact 24 is formed so as to protrude to the front. The concave groove 23 appears and disappears in the gap between the two guide rails 104 shown in FIG. 11 as the swing member 20 swings.

The swing cam member 30 is swingably mounted on the main body 10 via a support shaft 31. The swing cam member 30 is always urged by a torsion coil spring (cam urging means) 32 fitted on the support shaft 31 so as to swing in one direction ( counterclockwise in FIG. 3). The swing range of the swing cam member 30 by this urging force is regulated by a stopper 11 formed on the main body 10.

  The swing cam member 30 is also movable in the axial direction along the support shaft 31. The torsion coil spring 32 urges the swing cam member 30 in the axial direction toward the main body 10 and prevents the swing cam member 30 from being lifted by this biasing force.

  As shown in FIG. 5, the swing cam member 30 is formed with a cam portion including an outer cam surface 40 and a cam groove 41. The outer cam surface 40 is formed on a part of the outer peripheral surface of the swing cam member 30, and an inlet 42 to the cam groove 41 is opened at one end side of the outer cam surface 40. An outlet 43 of the cam groove 41 is opened on the end side. Further, a contact portion 33 of the release arm 50 is formed on the back surface of the swing cam member 30 so as to protrude in the axial direction.

The release arm 50 is swingably attached to the main body 10 via the support shaft 51.
The release arm 50 is constantly urged so as to swing in one direction (counterclockwise in FIG. 3) by a torsion coil spring 52 fitted to the support shaft 51. A slidable contact portion 50a of a release member 53, which will be described later, is formed at the proximal end of the release arm 50, while the distal end of the release arm 50 is in contact with the contact portion 33 of the swing cam member 30. The pressing part 50b which presses is formed.
Here, the relative position of the release arm 50 is adjusted so as to be separated from the swing cam member 30 when the back door of the automobile is closed.

  A release member 53 as shown in phantom lines in FIG. 3 is provided on the back door trim 107 (see FIG. 11) of the automobile, and the release member 53 comes into contact with the sliding contact portion 50a of the release arm 50 as the back door is opened and closed. Configure as follows. The release member 53 constitutes a so-called one-way clutch. When the back door is closed, the release member 53 rotates as indicated by a reference numeral 53a in FIG. 3 to face the sliding contact portion 50a of the release arm 50. (Position indicated by reference numeral 53b). Thereafter, when the back door is opened, the release member 53 moves upward in FIG. 3 together with the back door. At this time, the release member 53 moves while pressing the sliding contact portion 50 a, and the release arm 50 rotates in the clockwise direction in FIG. 3 against the urging force of the torsion coil spring 52 by the pressing force. Along with this turning operation, the pressing portion 50b formed at the tip of the release arm 50 comes into contact with the contact portion 33 of the swing cam member 30 and presses it.

  Here, the contact portion 33 is formed at a distance (at least a distance closer to a holding position 44 described later) from the support shaft 21 serving as the center of oscillation. Therefore, the bending stress generated in the swing cam member 30 due to the pressing force acting on the contact portion 33 is small, and therefore the swing cam member 30 is hardly damaged and the durability is improved.

FIG. 6A is a rear view showing the shape of the cam portion formed on the swing cam member, and FIG. 6B is a sectional view taken along the line AA. FIG. 7 is a front view showing a trajectory of the cam contactor 24 moving through the cam portion. As described above, the cam portion is formed by the outer cam surface 40 and the cam groove 41, the inlet 42 to the cam groove 41 is opened on one end side of the outer cam surface 40, and the other end of the outer cam surface 40. An outlet 43 of the cam groove 41 is opened on the side. A holding position 44 that restricts the movement of the cam contact 24 against the biasing force from the torsion coil spring 22 is formed in the cam groove 41.
When the cam contactor 24 is held at the holding position 44, the concave groove 23 of the swing member 20 faces the upper guide rail 104 within the gap between the two guide rails 104 shown in FIG. 11. Placed in. At this time, the protrusion 102 of the tonneau cover 101 enters and is locked in the groove 23. The protrusion 102 is sandwiched between the concave groove 23 and the guide rail 104 and the locked state with the concave groove 23 is maintained. That is, the guide rail 104 functions as a separation preventing member that prevents the projection 102 from detaching from the concave groove 23 in cooperation with the concave groove 23.

  As shown in FIG. 7, the cam contact 24 moves on the outer cam surface 40 (arrow a), enters the cam groove 41 from the inlet 42 (arrow b), and then moves along the cam groove 41. (Arrows c and d) and held at the holding position 44. Further, when the holding state at the holding position 44 is released, it moves again along the cam groove 41 (arrows e and f), and returns to the original position when it exits from the outlet 43 to the outer cam surface 40 (arrow g). ).

  As shown in FIG. 6A, an inclined surface 43a is formed at the outlet 43 of the cam groove 41. When the cam contactor 24 exits from the outlet 43, the swing cam member 30 is pivoted. The swing cam member 30 is lifted in the axial direction by the pressing force. When the cam contactor 24 comes out, the floating cam member 30 is lifted by the biasing force of the torsion coil spring 32. When the swing cam member 30 returns to the original position, the cam contact 24 can no longer enter the cam groove 41 from the outlet 43, and the cam contact 24 is formed on the outer cam surface formed on the outer periphery of the swing cam member 30. 40.

  Here, at the holding position 44 of the cam groove 41, as shown in FIGS. 6 (a) and 6 (b), an escape path is formed by notching the inner wall of the swing cam member 30 to the inclined surface 45. This escape path is arranged along the winding direction of the tonneau cover 101 when the cam contactor 24 is located at the holding position 44, and receives an external force when an excessive external force in the winding direction is applied to the tonneau cover 101. The cam contactor 24 moves over the inclined surface 45 and moves from the holding position 44. Also when the cam contactor 24 gets over the inclined surface 45, the swing cam member 30 is pressed in the axial direction, and the swing cam member 30 is lifted in the axial direction by this pressing force.

Next, the operation of the tonneau cover device according to the present embodiment will be described with reference mainly to FIGS.
When the protrusions (see FIG. 11) provided on both sides of the tip of the tonneau cover 101 are detached from the concave groove 23 of the swing member 20, the cam contact 24 is in contact with the outer cam surface 40 (see FIG. 11). 8 (a)). At this time, the recessed groove 23 is stationary with the opening directed toward the winding device 100 in the gap between the two guide rails 104.

  Next, when the tonneau cover 101 is pulled out from the winding device 100, the protrusion 102 moves along the guide rail 104 and is locked in the concave groove 23 of the swing member 20, and the pulling force of the tonneau cover 101 through the protrusion 102. Is transmitted to the swing member 20, and the swing member 20 swings clockwise in FIG. 8 (see FIGS. 8B and 8C). In conjunction with this swing operation, the swing cam member 30 swings clockwise in FIG. As the swinging member 20 and the swinging cam member 30 swing, the cam contact 24 moves relative to the outer cam surface 40 of the swinging cam member 30. Then, as shown in FIG. 8C, the cam contactor 24 enters the cam groove 41 from the inlet 42.

  Thereafter, when the pulling operation of the tonneau cover 101 is finished and the tonneau cover 101 is made free, the swinging member 20 swings counterclockwise in FIG. 8 by the urging force of the torsion coil spring 22. At this time, the swing cam member 30 also swings counterclockwise in FIG. 8 by the biasing force of the torsion coil spring 32. Along with these operations, the cam contactor 24 relatively moves along the cam groove 41 and reaches the holding position 44 (FIG. 9A). At the holding position 44, the cam contact 24 abuts against the inner wall of the swing cam member 30 and the movement is restricted. At this time, the tonneau cover 101 is pulled in the opposite direction by the winding force from the winding device 100. This tensile force is transmitted to the cam contact 24 through the protrusion 102, but the cam contact 24 is held at the holding position 44 by contact with the inner wall.

  When the cam contactor 24 is held at the holding position 44, the concave groove 23 of the swing member 20 is located at a position facing the upper guide rail 104 in the gap between the two guide rails 104 shown in FIG. Placed in. Therefore, the protrusion 102 locked to the groove 23 is sandwiched between the groove 23 and the guide rail 104 and the locked state with the groove 23 is maintained. Therefore, even if an external force is applied to the tonneau cover 101, there is no possibility that the protrusion 102 is detached from the concave groove 23.

  Next, when the tonneau cover 101 is pulled in the pulling direction, the swinging member 20 moves in the clockwise direction in FIG. 9, and the cam contactor 24 moves away from the holding position 44. At this time, the swing cam member 30 swings counterclockwise in FIG. 9 by the biasing force of the torsion coil spring 32. Along with this swinging motion, the cam contactor 24 relatively moves along the cam groove 41 (FIG. 9B).

  Subsequently, when the pulling operation of the tonneau cover 101 is finished and the tonneau cover 101 is made free, the swinging member 20 swings counterclockwise in FIG. 8 by the urging force of the torsion coil spring 22. At this time, the swing cam member 30 also swings counterclockwise in FIG. 8 by the biasing force of the torsion coil spring 32. Along with these operations, the cam contactor 24 relatively moves along the cam groove 41, exits the cam groove 41 from the outlet 43, and comes into sliding contact with the outer cam surface 40 (FIG. 9C).

  When the cam door 24 is held at the holding position 44 (FIG. 9A), when the back door of the automobile is opened, the release member 53 attached to the back door trim 107 is slidably contacted with the release arm 50. The part 50a is pressed (FIG. 10A). With this pressing force, the release arm 50 swings in the clockwise direction of FIG. 10, and the pressing portion 50 b at the tip comes into contact with and presses the contact portion 33 of the swing cam member 30. With this pressing force, the swing cam member 30 swings counterclockwise in FIG. 10, and the cam contactor 24 moves away from the holding position 44 (FIG. 10B). At this time, the swing cam member 30 swings counterclockwise in FIG. 10 by the biasing force of the torsion coil spring 32. Further, the swing cam member 30 also swings counterclockwise in FIG. 10 by the biasing force of the torsion coil spring 32 (FIG. 10C). Along with these operations, the cam contactor 24 relatively moves along the cam groove 41, exits the cam groove 41 from the outlet 43, and comes into sliding contact with the outer cam surface 40 (FIG. 10D).

  In addition, this invention is not limited to embodiment mentioned above, Of course, various deformation | transformation implementation and application implementation are possible.

It is a perspective view which shows the structure of the tonneau cover holding mechanism which concerns on embodiment of this invention. It is the perspective view which looked at the tonneau cover holding mechanism from a different viewpoint. It is a front view which similarly shows the structure of a tonneau cover holding mechanism. It is a figure which shows the structure of a rocking | fluctuation member, (a) is a top view, (b) is a front view, (c) is a side view, (d) is a perspective view. It is a figure which shows the structure of a rocking cam member, (a) is a top view, (b) is a back view, (c) is a side view, (d) is a perspective view. It is a figure which shows the shape of the cam part formed in the rocking cam member, (a) is a back view, (b) is an AA sectional view. It is a front view which shows the locus | trajectory to which the cam contactor 24 moves a cam part. It is operation | movement explanatory drawing of the tonneau cover apparatus which concerns on embodiment of this invention. FIG. 9 is an operation explanatory diagram of the tonneau cover device following FIG. 8. FIG. 9 is an operation explanatory diagram of the tonneau cover device following FIG. 8. It is a perspective view for demonstrating the conventional tonneau cover apparatus. It is the block diagram for demonstrating the conventional tonneau cover apparatus similarly.

Explanation of symbols

1: tonneau cover holding mechanism, 10: main body, 11: stopper, 20: swing member, 21: support shaft, 22: torsion coil spring, 23: groove (locking portion), 24: cam contact, 30: swing Moving cam member, 31: support shaft, 32: torsion coil spring, 33: contact portion, 40: outer cam surface, 41: cam groove, 42: inlet, 43: outlet, 43a: inclined surface, 44: holding position, 45: Inclined surface, 50: Release arm, 50a: Sliding contact part, 50b: Press part, 51: Support shaft, 52: Torsion coil spring, 53: Release member,
101: Tonneau cover, 102: Protrusion (tono cover engaging portion), 103: Deck side trim, 104: Guide rail, 105: Groove groove, 106: Engaging / disengaging member, 107: Back door trim, 108: Pressing portion

Claims (7)

A tonneau cover for covering the upper part of the cargo compartment of an automobile, a winding device for winding the tonneau cover, a tonneau cover engaging portion provided at the tip of the tonneau cover drawn out from the winding device, and the tonneau cover engaging portion. A tonneau cover holding mechanism that stops and holds the tonneau cover pulled out, and a tonneau cover device comprising:
The tonneau cover holding mechanism is
A body that can be attached to the body of an automobile,
A swinging member that is swingably attached to the main body and provided with a locking part that detachably locks the tonneau cover engaging part;
An urging means for constantly urging the oscillating member to oscillate in one direction;
A swing cam member that is swingably mounted on the main body;
Cam biasing means for constantly biasing the swing cam member so as to swing in one direction;
A detachment preventing member for preventing detachment of the tonneau cover engaging part from the engaging part in cooperation with the engaging part of the swinging member;
Further, the swing member is provided with a cam contact, and the swing cam member is formed with a cam portion for guiding the cam contact,
The cam portion has a holding position that restricts the movement of the cam contact against the biasing force from the biasing means, and when the cam contact is held at the holding position, A tonneau cover apparatus, wherein the locking portion of the swing member prevents the tonneau cover engaging portion from being detached in cooperation with the separation preventing member. The engaging portion of the swing member is formed by a concave groove, the tonneau cover engaging portion is formed by a protrusion that enters the concave groove, and the separation preventing member is configured by a guide rail of the tonneau cover,
2. The tonneau cover device according to claim 1, wherein when the cam contact is held at the holding position, the opening of the concave groove is arranged at a position facing the guide rail. The cam portion includes an outer cam surface formed on an outer periphery of the swing cam member, an inlet opening on one end side of the outer cam surface, and an outlet opening on the other end side of the outer cam surface. The tonneau cover device according to claim 1 or 2, wherein the holding position is formed in a part of the cam groove. 4. The tonneau cover device according to claim 3, wherein the cam contact is guided along the following paths (A) to (E).
(A) When the tonneau cover engaging part is detached from the engaging part of the swinging member, the cam contact is in contact with the outer cam surface.
(B) The tonneau cover engaging portion that has moved in the pull-out direction by an external force is locked to the locking portion of the swing member, and the swing member resists the biasing force from the biasing means by the external force. When swung in the direction, the cam contact enters the cam groove from the inlet of the cam groove.
(C) When the external force in the pulling direction acting on the tonneau cover engaging portion is released, the swinging member swings in the reverse direction by the biasing force of the biasing member, and the cam contactor accompanies this swinging. Is guided to the holding position.
(D) When the swinging member swings with an external force in a direction against the biasing force from the biasing means, the cam contact is separated from the holding position, and the swinging cam member is attached to the cam. The cam contact is moved from the holding position by swinging with the biasing force of the biasing means.
(E) When the cam contact is moved from the holding position, the swinging member is swingable in the direction in which the biasing force is applied by the biasing means. The child comes out from the outlet of the cam groove and comes into contact with the outer cam surface again. In the holding position of the cam groove, an escape path is formed by cutting out the inner wall into an inclined surface, and when an excessive external force in the winding direction acts on the tonneau cover, the cam contact is inclined with the external force. The tonneau cover apparatus according to claim 3 or 4, further comprising a structure that moves over the surface and moves from the holding position. A release arm swingably attached to the main body, and a release member attached to the back door of the automobile,
When the back door of the automobile is opened, the release member swings the release arm, and in conjunction with the release arm, the release arm presses and swings the swing cam member. 6. The tonneau cover device according to claim 1, wherein the contactor moves from the holding position and the tonneau cover engaging portion is detached from the locking portion. 7. The tonneau cover device according to claim 6, wherein the release arm is separated from the swing cam member in a state where the back door of the automobile is closed.

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