JP2007137355A - Opening/closing device of tonneau cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly drive to lift a rear end part of a tonneau cover by interlocking with an opening/closing operation of a back door provided on the rear part of a vehicle body. <P>SOLUTION: In the opening/closing device of the tonneau cover, a driving force corresponding to an opening/closing operation of a back door 3 is transmitted to a pull bar 7 through a connecting link 9 to slidingly displace the pull bar 7 along a guide rail 8, and the rear end part of the tonneau 6 is composed so as to be driven to lift by interlocking with this displacement. The central part in the vertical direction of the guide rail 8 viewed from the side surface of the vehicle body is curved so as to recess toward the lower side of the front part of the vehicle body, and the guide direction of the pull bar 7 by the guide rail 8 is set so that the angle formed by the input direction of shut off operation force acting the pull bar 7 from the connecting link 9 and the guide direction of the pull bar by the guide rail 8 becomes a blunt angle on the closing operation of the back door 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tonneau cover opening and closing device configured such that a rear end portion of a tonneau cover is moved up and down in conjunction with an opening and closing operation of a back door provided at a rear portion of a vehicle body.

Conventionally, as shown in Patent Document 1 below, a back door (tail gate) that is supported so as to be pivotable about a horizontal axis pivotally attached to a vehicle body and covers a rear opening of the vehicle, and an upper surface of a rear luggage compartment A tonneau cover (roller blind) for covering, two guide rails attached along the side edge of the rear opening, and a pull bar provided at the rear end of the tonneau cover are detachably locked. The slider includes a slider (guide slide) and a connecting rod that connects the slider to the back door. The slider is moved along the guide rail according to the driving force input from the connecting rod to the slider when the back door is opened and closed. By forcibly slidably moving, the pulling bar is moved to a lower tonneau cover closing position and an upper tonneau cover opening position.
Japanese Patent No. 3613581

  As disclosed in Patent Document 1, the slider is moved up and down along the guide rail in accordance with the opening / closing operation of the back door, so that the pull bar provided at the rear end portion of the tonneau cover is moved to the lower tonneau cover. If it is configured to automatically move to the closing position and the upper tonneau cover opening position, it is possible to easily carry in and out the luggage with respect to the rear luggage compartment when the back door is opened without providing a separate driving means. In addition, the tonneau cover can be displaced to the upper open position, and when the back door is closed, the tonneau cover can be displaced to the lower covering position so as to conceal the contents in the rear cargo compartment.

  However, in the tonneau cover device disclosed in Patent Document 1, the guide rails that slidably support the slider are installed along the left and right sides of the rear opening that is slanted upward when viewed from the rear surface of the vehicle body. Therefore, when the back door is opened, the pull bar is raised to the upper tonneau cover open position, and when the back door is closed, the pull bar is lowered to the lower tonneau cover closed position. The installation interval will change. For this reason, in the tonneau cover device according to the above-mentioned Patent Document 1, the protruding and retracting pins whose projecting amounts change are provided at the left and right ends of the pulling rod, and the projecting amount of the projecting and retracting pin is changed in accordance with the vertical displacement of the pulling rod. Thus, the left and right end portions of the pull rod are always supported by the guide rail via the projecting pin and the slider, and the structure is complicated. There is a problem that rattling is likely to occur.

  In addition, by installing the left and right guide rails in parallel in the rear view of the vehicle, it is also possible to always support the left and right ends of the pull bar on the guide rails without providing the protruding and retracting pins on the left and right ends of the pull bar. However, when configured in this way, the lower end of the guide rail is inclined to the rear opening because the left and right sides of the rear opening are inclined to be narrowed when viewed from the rear surface of the vehicle body. There is a problem that the guide rail becomes an obstacle when the luggage is taken in and out of the rear cargo compartment. In addition, the rear view is deteriorated due to the narrow installation interval between the left and right guide rails, and the width of the tonneau cover installed between the two guide rails is unavoidably small. .

  Further, even when the left and right guide rails are installed so as to be parallel when viewed from the rear surface of the vehicle body, in order to prevent the guide rails from interfering with the loading / unloading of the luggage with respect to the rear luggage compartment, It is also conceivable to arrange the left and right guide rails on the front side by a predetermined distance from the rear opening of the vehicle. However, in such a configuration, when starting the closing operation of the back door in the open state, the input direction of the closing operation force acting on the slider from the connecting rod through the pulling rod is By acting at an angle close to a right angle with respect to the installation direction, it is inevitable that the frictional force when sliding the slider is increased, and the rear end of the tonneau cover is smoothed in conjunction with the opening / closing operation of the back door. However, it is difficult to drive up and down.

  The present invention has been made in view of the above problems, and a tonneau cover opening / closing device capable of smoothly raising and lowering the rear end portion of the tonneau cover in conjunction with the opening / closing operation of the back door provided at the rear portion of the vehicle body. It is intended to provide.

  According to a first aspect of the present invention, there is provided a back door that is installed at the rear part of the vehicle body and swings and displaces with the upper hinge part as a fulcrum so as to open and close the rear opening, and a rear load located on the front side of the rear opening. A tonneau cover installed to cover the upper portion of the chamber, a pull bar provided at the rear end of the tonneau cover, a pair of left and right guide rails that slidably support the left and right ends of the pull bar, and the pull A connecting link that connects the left and right ends of the rod to the back door, and a driving force according to the opening / closing operation of the back door is transmitted to the pulling rod via the connecting link, thereby pulling the rod along the guide rail Is a tonneau cover opening and closing device configured to slide up and down and the rear end portion of the tonneau cover is driven up and down in conjunction with this, and the vertical direction of the guide rail as viewed from the side of the vehicle body The center part is bent so as to be recessed toward the lower front side of the vehicle body, and at the time of closing the back door, the input direction of the closing operation force acting on the pulling bar from the connection link and the pulling bar by the guide rail The guide direction of the pull bar by this guide rail is set so that the angle formed by the guide direction becomes an obtuse angle.

  According to a second aspect of the present invention, in the tonneau cover opening and closing device according to the first aspect, the angle formed by the input direction of the closing operation force at the upper end portion of the guide rail and the guide direction of the pulling bar is defined as the vertical direction of the guide rail. This is set to a value larger than the angle formed by the input direction of the closing operation force at the intermediate portion and the guide direction of the pulling bar.

  According to a third aspect of the present invention, in the tonneau cover opening and closing device according to the first or second aspect, the guide direction of the pulling bar at the lower end portion of the guide rail is set substantially horizontal.

  According to a fourth aspect of the present invention, in the tonneau cover opening and closing device according to the second or third aspect, the angle is continuously set at a portion where the angle formed by the input direction of the closing operation force and the guide direction of the pulling bar changes. It has been changed to.

  According to a fifth aspect of the present invention, in the tonneau cover opening and closing device according to any one of the first to fourth aspects, the upper portion of the guide rail is inclined substantially rearward when viewed from the side of the vehicle body. The guide rail is installed so that the lower end portion of the guide rail is brought close to the rear opening portion while being separated from the rear opening portion extending to the front side.

  According to the first aspect of the present invention, the rear end portion of the tonneau cover can be driven up and down in conjunction with the opening / closing operation of the back door without providing separate driving means, The left and right guide rails can be installed in parallel while ensuring sufficient spacing between the guide rails, and when starting the closing operation of the back door in the open state, the pull bar is moved along the guide rail. By suppressing the increase of the frictional resistance when sliding and moving, there is an advantage that the rear end portion of the tonneau cover can be driven up and down smoothly.

  According to the second aspect of the present invention, in the initial stage when performing the closing operation of the back door on which the static friction force acts, the pulling bar is moved downward in accordance with the closing operation force input from the connecting link to the pulling bar. The sliding rod can be moved up and down sufficiently, and the frictional resistance corresponding to the closing operation force can be kept sufficiently low, so that the pulling bar can be driven up and down smoothly according to the closing operation of the back door. is there.

  According to the third aspect of the present invention, even when the guide position of the pull bar at the time of closing the back door is slightly changed due to production error or deformation due to use, the tonneau cover is moved up and down. It is possible to effectively prevent the occurrence of a change in the position of the tonneau cover, thereby preventing the installation height and the installation direction from changing when the tonneau cover is moved downward to the closed position.

  According to the invention of claim 4, since the angle is continuously changed at the portion where the angle formed by the input direction of the closing operation force and the guide direction of the pulling bar changes, the angle is It is possible to effectively prevent rattling from occurring when the pulling rod slides due to a sudden change at the site, and to smoothly slide the pulling rod along the guide rail.

  According to the fifth aspect of the invention, when the back door is opened, the upper part of the connecting link is prevented from interfering with the rear pillar and the like, and a sufficient interval between the left and right guide rails is ensured in the rear view of the vehicle body. On the other hand, the left and right guide rails can be installed in parallel, and in the closed state of the back door, the rear end of the pull bar and the tonneau cover is moved to a position close to the side of the rear opening, thereby There is an advantage that substantially the entire region including the rear portion of the rear cargo compartment can be covered with the tonneau cover.

  1 to 3 show an embodiment of a tonneau cover opening and closing device according to the present invention. The tonneau cover opening / closing device is installed on the rear side of the vehicle body and swings and displaces with the upper hinge portion 1 as a fulcrum to cover the rear opening 2 so that it can be opened and closed, and on the front side of the rear opening 2. A tonneau cover 6 installed so as to cover the upper part of the rear luggage compartment 5 formed on the rear side of the seat back 4 of the occupant seat (rear seat), and a pull bar 7 provided at the rear end of the tonneau cover 6 A pair of left and right guide rails 8 that slidably support the left and right ends of the pull bar 7 and the left and right ends of the pull bar 7 connected to the back door 3 to drive the back door 3 according to the opening / closing operation. By transmitting the force to the pull bar 7, the pull bar 7 is slid along the guide rail 8, and a linkage link 9 that drives the rear end of the tonneau cover 6 up and down in conjunction with this is provided. In FIG. 1 to FIG. 3, the symbol S indicates an installation line for the seal member installed along the periphery of the rear opening 2.

  The tonneau cover 6 is constituted by a sheet-like body installed between a storage case 10 installed along the upper back of the seat back 4 and a pull bar 7 supported by the guide rail 8. A winding mechanism that urges the tonneau cover 6 in the winding direction is disposed in the housing case 10, and a tension corresponding to the urging force of the winding mechanism is applied to the tonneau cover 6, while the pulling rod 7 is moved. The tonneau cover 6 is pulled out from the housing case 10 in accordance with the pulling output inputted to the tonneau cover 6 through the housing case 10.

  As shown in FIG. 4, the rear end portion of the tonneau cover 6 is inserted into a slit 7 a formed on the front surface of the pull bar 7 and fixed thereto, and the rear end portion of the pull bar 7 has a rear portion. A cover plate 11 made of a synthetic resin plate that covers the rear upper surface of the cargo compartment 5 is integrally formed. Further, a reinforcing member 12 made of a synthetic resin material is installed on a side portion of the connecting portion between the tonneau cover 6 and the pulling bar 7, and the reinforcing member 12 allows the rear end side portion of the tonneau cover 6 and the pulling bar to be connected. 7 side parts are clamped integrally.

  A connecting bracket 13 for connecting the tonneau cover 6 to the connecting link 9 is provided at the side end of the pulling bar 7. The coupling bracket 13 includes a substrate 14 that is slidably supported along the inner surface of the guide rail 8. A locking hole 15 for the connection link 9 is formed at the rear of the substrate 14. On the inner surface of the front portion of the substrate 14, a U-shaped locking portion 16 having a rear end opened is protruded. The side end portion of the pull bar 7 is releasably locked to the locking portion 16 and the above-described winding mechanism that biases the rear end portion of the tonneau cover 6 forward is responsive to the above-described urging force. The locked state of the pull bar 7 is maintained.

  The connecting link 9 includes an upper end pivot portion 18 extending in the horizontal direction, a drooping portion 19 that hangs obliquely downward from an inner end portion of the upper end pivot portion 18 when viewed from the side of the vehicle body, and a lower end of the drooping portion 19. A bent portion 20 that extends obliquely downward from the front portion and a lower end pivot portion 21 that extends horizontally from the lower end portion of the bent portion 20 toward the vehicle outer side, and by bending a round bar, etc. Is formed. And the outer side edge part of the lower end pivotal support part 21 of the said connection link 9 is penetrated by the latching hole 15 of the said coupling bracket 13, and the guide groove 22 of the guide rail 8, and the nut 23 is screwed by the insertion end part. Thus, the lower end pivot part 21 is locked to the guide rail 8 and the outer end part of the upper end pivot part 18 of the connection link 9 is attached to the upper inner surface of the back door 3 via the mounting bracket 24. The back door 3 and the pull bar 7 are connected via a connecting link 9.

  Further, the connecting link 9 is set such that the protruding amount of the lower end pivot part 21 is larger than that of the upper end pivot part 18, and the hanging part 19 and the bent part 20 are outside the lower part when viewed from the rear surface of the vehicle body. It is installed in an inclined state so as to extend to the side. As a result, as shown in FIGS. 2 and 3, the rail side pivot point L <b> 2, which is the connection point of the lower end pivot part 21 with respect to the coupling bracket 13, is the door side consisting of the connection point of the upper end pivot part 18 with respect to the back door 3. The hanging portion 19 of the connecting link 9 that is disposed so as to be located on the vehicle outer side with respect to the pivot point L1 and that is connected to the upper end pivot portion 18 is more inward of the vehicle body than the side portion of the rear opening 2. It is arranged on the side. And the imaginary line L which connects the said door side pivot point L1 and the rail side pivot point L2 inclines so that it may be located in the outer side of a vehicle width direction, so that it may reach a lower end part, The imaginary line L is installed along the rear pillar 25 constituting the side portion of the rear opening 2.

  In addition, the bent portion 20 is installed so as to extend obliquely toward the front side of the vehicle body with respect to the hanging portion 19 of the connection link 9, as shown in FIG. The connecting link 9 is formed in an L shape with an intermediate portion in the vertical direction protruding to the rear side of the vehicle body. Furthermore, as shown in FIG. 2, when the back door 3 is closed, the hanging portion 19 and the bent portion 20 of the connection link 9 are inclined downwardly as viewed from the rear surface of the vehicle body. The connecting link 9 is arranged along the inner side surface of the rear pillar 25 constituting the side portion of the rear opening 2.

  The guide rail 8 is made of a plate material or the like having a guide groove 22 in which the lower end pivotal support portion 21 of the connecting link 9 slides, and the center portion in the vertical direction when viewed from the side surface of the vehicle body faces the front lower side of the vehicle body. It is installed in a curved state so as to be recessed, and the left and right guide rails 8 are installed in parallel along the vertical direction as viewed from the rear surface of the vehicle body. When the back door 3 is closed, the pulling rod 7 supported by the guide rail 8 is input to the pulling rod 7 via the connecting link 9 and the coupling bracket 13, and the guide rail 8 is used. The guide direction of the pull bar 7 by the guide rail 8 is set so that the angle formed by the guide direction of the pull bar 7 becomes an obtuse angle.

  That is, during the closing operation of the back door 3, as shown in FIG. 5, the closing operation force in the direction A along the line segment connecting the upper end pivot portion 18 and the lower end pivot portion 21 of the connecting link 9 as seen from the side of the vehicle body. Is input, and the input direction A of the closing operation force and the input direction A of the closing operation force are set so that the input direction A of the closing operation force is positioned in front of the line segment extending in the direction C orthogonal to the guide direction B of the guide rail 8. By setting the guide direction B of the guide rail 8, the angle θ formed by the input direction A of the closing operation force and the guide direction B of the guide rail 8 is configured to be an obtuse angle.

  Further, as the closing operation of the back door 3 proceeds, the input direction A of the closing operation force approaches a vertical state, and at the final stage of the closing operation, the input direction A of the closing operation force changes in the forward downward direction. However, by correspondingly changing the guide direction B of the guide rail 8 so as to approach the horizontal, the angle θ formed between the input direction A of the closing operation force and the guide direction B of the pulling bar 7 is substantially reduced. It is maintained at a constant value. In FIG. 5, the arc-shaped line segment denoted by reference sign D is the movement trajectory of the upper end pivot 18 corresponding to the closing operation of the back door 3, and reference numeral 1 is an upper portion serving as the swing fulcrum of the back door 3. It is a hinge part.

  By setting the angle θ between the input direction A of the closing operation force and the guide direction B of the guide rail 8 as described above to be an obtuse angle, as shown in FIG. In accordance with the closing operation force F input to the pulling rod 7 from above, a moving force G that slides the lower end pivotal support portion 21 of the connecting link 9 and the pulling rod 7 downward along the guide rail 8 acts. . Further, as shown in FIG. 6B, as the angle θ decreases and becomes a value close to a right angle, the moving force G decreases and the closing operation force F is orthogonal to the guide direction B. Since the component force H acting in the direction C increases, the friction force represented by a value obtained by multiplying the component force H by the friction coefficient μ, that is, the lower end pivot portion 21 of the connecting link 9 is slid along the guide rail 8. There is a tendency that the frictional resistance generated when displacing is increased.

  When the correspondence relationship between the frictional force when the lower end pivotal support portion 21 and the pulling rod 7 of the connecting link 9 are slid downward along the guide rail 8 and the angle θ is examined by experiment, the angle θ is 110. It was confirmed that the lower end pivotal support portion 21 and the pull rod 7 of the connecting link 9 can be slid downwardly against the frictional force if the angle is greater than or equal to °. From this experimental example, the angle θ formed by the input direction A of the closing operation force F and the guide direction B of the pull bar 7 is set to 110 ° or more over the entire area of the guide rail 8, thereby opening and closing the back door 3. The pull bar 7 can be smoothly slid along the guide rail 8 according to the driving force input from the connecting link 9 to the pull bar 7 during operation, and the tonneau cover 6 is moved downward from the upper open position. It was verified that it could be moved to the closed position.

  Further, in the initial stage when the closing operation of the back door 3 is performed, that is, in the state where the upper end pivotal support portion 18 of the connection link 9 is located at the upper end portion of the guide rail 8, a large static friction force acts. Therefore, in order to displace the tonneau cover 6 from the upper open position to the lower close position by smoothly sliding and displacing the pull bar 7 against this static friction force, the upper end of the guide rail 8 is It is preferable to set the angle θ formed by the input direction A of the closing operation force F and the guide direction B of the guide rail 8 to a value larger than the vertical middle portion and the lower portion of the guide rail 8, for example, about 135 °. .

  Further, the portion where the angle θ formed by the input direction A of the closing operation force and the guide direction of the pulling bar 7 and B changes, that is, the guide where the angle θ is set to a larger value (about 135 °) than the lower part. In a portion located between the upper end of the rail 8 and the vertical intermediate portion of the guide rail 8 where the angle θ is set to a small value (about 110 °), the angle θ is continuously from 135 ° to 110 °. The guide direction B of the pull bar 7 by the guide rail 8 is set so as to change linearly.

  The guide direction B of the pull bar 7 at the lower end of the guide rail 8, that is, the guide direction B of the pull bar 7 at the final stage of the closing operation of the back door 3, is set substantially horizontal as shown in FIG. . Further, as shown in FIG. 1, when viewed from the side of the vehicle body, the upper portion of the guide rail 8 is in front of the rear opening 2 defined by the rear pillar 25 that is inclined downward and extends substantially linearly. The lower end of the guide rail 8 is disposed so as to be close to the rear opening 2.

  A back door 3 that is installed at the rear of the vehicle body and swings and displaces with the upper hinge 1 as a fulcrum as described above so as to open and close the rear opening 2, and the rear opening 2 and a seat back 4 for a passenger seat. The tonneau cover 6 installed so as to cover the upper part of the rear cargo compartment 5 formed between the pulling bar 7, the pull bar 7 provided at the rear end of the tonneau cover 6, and the left and right ends of the pull bar 7 It has a pair of left and right guide rails 8 that are slidably supported, and connecting links 9 that connect the left and right ends of the pull bar 7 to the back door 3, and the closing operation force F of the back door 3 causes the connecting links 9 to be connected. The pulling bar 7 is slid along the guide rail 8 by being transmitted to the pulling bar 7 and the rear end of the tonneau cover 6 is driven up and down in conjunction with this movement. Equipment In addition, the guide rail 8 is bent so that the vertical center portion of the guide rail 8 is recessed toward the front lower side of the vehicle body when viewed from the side of the vehicle body, and the pulling rod is pulled from the connection link 9 when the back door 3 is closed. The guide direction B of the pulling rod 7 by the guide rail 8 is set so that the angle θ formed by the input direction A of the closing operation force F input to 7 and the guide direction B of the pulling rod 7 by the guide rail 8 becomes an obtuse angle. Since it is set, the tonneau cover 6 is moved to the lower covering position and the upper opening position by smoothly raising and lowering the rear end portion of the tonneau cover 3 in conjunction with the opening / closing operation of the back door 3 with a simple configuration. be able to.

  That is, the pull rod 7 is slid along the guide rail 8 in accordance with the opening / closing operation of the back door 3, and the rear end portion of the tonneau cover 6 is driven up and down in conjunction with this. The rear end portion of the tonneau cover 6 can be driven up and down in conjunction with the opening and closing operation of the back door 3 with a simple configuration without providing a separate driving means. As a result, when the back door 3 is opened, the rear end of the tonneau cover 6 can be moved to the upper open position so that the luggage can be easily taken in and out of the rear luggage compartment 5, and when the back door 3 is closed, the tonneau cover is opened. There is an advantage that the luggage in the rear cargo compartment 5 can be concealed by the tonneau cover 6 by moving the rear end of the battery 6 to the lower closed position.

  Further, since the vertical center portion of the guide rail 8 as viewed from the side surface of the vehicle body is curved so as to be recessed toward the lower front side of the vehicle body, the rear opening 2 is viewed from the rear surface of the vehicle body. In the rear vehicle body configured such that the width of the vehicle body decreases toward the rear end when viewed from the plane, and the left and right sides of the guide rail 8 are rearwardly opened. By disposing a predetermined distance ahead of the part 2, the left and right guide rails 8 can be installed in parallel while sufficiently securing the installation interval of the left and right guide rails 8 in the rear view of the vehicle body.

  Therefore, as shown in the prior art, the left and right ends of the pull bar 7 are always supported by the guide rail 8 without taking any means such as providing protruding and retracting pins that change the protruding amount at the left and right ends of the pull bar. As shown by the broken lines in FIG. 2, the structure can be simplified, and the left and right sides of the rear opening 2 are inclined to be constricted when viewed from the rear surface of the vehicle body. The lower end of the guide rail 8a is prevented from being located on the inner side of the rear opening 2, and the lower end of the guide rail 8 is placed on the outer side of the rear opening 2 as shown by the solid line in FIG. Can be arranged. This prevents the guide rail 8 from obstructing the loading and unloading of the luggage into the rear cargo compartment 5, and the width of the tonneau cover 6 disposed between the two guide rails 8 is sufficiently large. There is an advantage that can be secured.

  Moreover, when the back door 3 is closed, the angle θ formed by the input direction A of the closing operation force F acting on the pull bar 7 from the connecting link 9 and the guide direction B of the pull bar 7 by the guide rail 8 becomes an obtuse angle. As described above, since the guide direction B of the pull bar 7 by the guide rail 8 is set, the guide rail 8 is opened even when the guide rail 8 is disposed on the front side by a predetermined distance from the rear opening 2 of the vehicle as described above. When the closing operation of the back door 3 in the state is started, an increase in frictional force when the pulling rod 7 is slid along the guide rail 8 is suppressed and interlocked with the opening / closing operation of the back door 3. Thus, the rear end portion of the tonneau cover 6 can be driven up and down smoothly.

  That is, the inclination angle of the closing operation force input from the back door 3 in the open state to the pull bar 7 via the connecting link 9 is such that the guide rail 8 is arranged in front of the rear opening 2 of the vehicle. Since the input direction A of the closing operation force approaches horizontal, the moving force to move downward along the guide rail 8 tends to decrease according to the closing operation force. However, as shown in FIG. 5, when viewed from the side of the vehicle body, the guide rail 8 is bent so that the central portion in the vertical direction is recessed toward the lower front side of the vehicle body, and at the time of closing the back door 3. The guide direction of the guide rail 8 so that the angle θ formed by the input direction A of the closing operation force F input from the connecting link 9 to the pull bar 7 and the guide direction B of the pull bar 7 by the guide rail 8 becomes an obtuse angle. In the case where B is set, as shown in FIG. 6 (a), the closing operation force F is applied even though the guide rail 8 is disposed in front of the vehicle rear opening 2 as described above. Accordingly, a sufficient moving force G for slidably moving the lower end pivot portion 21 and the pulling rod 7 of the connecting link 9 downward is secured, and the rear end portion of the tonneau cover 6 is smoothly moved in conjunction with the opening / closing operation of the back door 3. Can be driven up and down That.

  Further, as shown in the above embodiment, the angle θ formed by the input direction A of the closing operation force F at the upper end portion of the guide rail 8 and the guide direction B of the pull bar 7 is set at the intermediate portion in the vertical direction of the guide rail 8. In a case where the value is set to a value larger than the angle θ formed by the input direction A of the operating force and the guide direction B of the pulling bar 7, Corresponding to the closing operation force F input from the connecting link 9 to the pulling bar 7, the lower end pivot 21 and the pulling bar 7 of the connecting link 9 are sufficiently secured to have a moving force G, and the closing is performed. The closing operation of the back door 3 is smoothly performed by suppressing the frictional force represented by a value obtained by multiplying the component force H acting in the direction C orthogonal to the guide direction B of the operating force F by the friction coefficient μ. line There is the advantage that it is possible.

  Furthermore, in the above embodiment, the guide direction B of the pull bar 7 at the lower end of the guide rail 8 is set to be substantially horizontal, so that the above-mentioned when the back door 3 is closed due to production errors or deformation due to use or the like. Even when a slight change occurs in the guide position of the pull bar 7, it is possible to effectively prevent a situation in which the vertical position of the tonneau cover 6 is changed, thereby moving the tonneau cover 6 downward to the closed position. Furthermore, there is an advantage that the installation height and the installation direction can be prevented from changing.

  In particular, when the angle θ formed by the input direction A of the closing operation force and the guide direction B of the pulling rod 7 changes, the angle θ is changed continuously. Since it is possible to effectively prevent rattling from occurring at the time of sliding displacement of the pull bar 7 due to sudden change at the above-mentioned site, it is possible to smoothly slide the pull bar 7 along the guide rail 8. There is an advantage that you can.

  In the above-described embodiment, the upper portion of the guide rail 8 is separated from the rear opening portion 2 that is inclined downwardly and extends substantially linearly when viewed from the side of the vehicle body to the front side thereof, and the lower end of the guide rail 8. By installing the guide rail 8 so that the part approaches the rear opening 2, the left and right guide rails 8 are installed in parallel in the rear view of the vehicle body, and a sufficient interval between the two guide rails 8 is secured. However, when the back door 3 is closed, the rear ends of the pull bar 7 and the tonneau cover 6 are moved to a position close to the side portion of the rear opening 2.

  When the upper part of the guide rail 8 is separated from the rear opening 2 to the front side as described above, the connecting link 9 moves upward along the guide rail 8 when the back door 3 is opened. Can be prevented from interfering with the side part of the rear pillar 25, and the left and right guide rails 8 can be prevented from interfering with the rear pillar 25 in the rear view of the vehicle body. The left and right guide rails 8 can be installed in parallel while sufficiently securing the installation interval. In addition, in the closed state of the back door 3, the rear ends of the pull bar 7 and the tonneau cover 6 are moved to a position close to the side portion of the rear opening 2. The tonneau cover 6 can cover almost the entire region including the above, and there is an advantage that the concealing function of the contents by the tonneau cover 6 can be sufficiently exhibited.

  In the above embodiment, the rail side pivot point L2 of the connecting link 9 consisting of the connecting point of the lower end pivot part 21 to the guide rail 8 is used as the door side pivot point of the connecting link 9 consisting of the connecting point of the upper end pivot part 18 to the back door 3. Since it is positioned on the vehicle outer side than L1, when the back door 3 is opened, the upper portion of the connecting link 9 is prevented from coming into contact with the side portion of the rear opening 2 and the tonneau cover is opened when the back door 3 is opened. 6 has an advantage that the rear end portion of the tonneau cover 6 can be raised to a sufficiently high position and the width of the tonneau cover 6 can be sufficiently secured by positioning the guide rail 8 on the outer side in the vehicle width direction.

  That is, when the upper end of the guide rail 8 is extended to the vicinity of the upper side of the rear opening 2 in order to move the rear end of the tonneau cover 6 greatly upward when the back door 3 is opened, the back door The upper part of the connecting link 9 that has moved upward along the guide rail 8 when the door 3 is opened tends to easily interfere with the side part of the rear opening 2 that is slanted upward when viewed from the rear surface of the vehicle body. . Further, when the guide rail 8 to which the lower end pivotal support portion 21 of the connection link 9 is connected is positioned on the inner side of the vehicle body, the interval between the left and right guide rails 8 is reduced and disposed between them. The width of the tonneau cover 6 is inevitably reduced, and there is a problem that the guide rail 8 becomes a hindrance when loading / unloading the rear luggage compartment 5 (see the broken line 8a in FIG. 2).

  On the other hand, as shown in the above embodiment, when the rail side pivot point L2 of the connecting link 9 is positioned outside the door side pivot point L1, the rear end of the tonneau cover 6 is opened when the back door 3 is opened. Even when the upper end portion of the guide rail 8 is extended to the vicinity of the upper side portion of the rear opening 2 in order to move the portion largely upward, the upper portion of the connecting link 9 located in the vicinity of the door side pivot point L1. The upper portion of the connecting link 9 is prevented from interfering with the side portion of the rear opening 2 by positioning the hanging portion 19 on the inner side of the side portion of the rear opening 2. Can do. In addition, the rail-side pivot point L2 is positioned outside the door-side pivot point L1 to ensure a sufficient interval between the left and right guide rails 8 so that the tonneau cover 6 disposed between the two guide rails 8 is provided. There are advantages that the width dimension can be increased and that the guide rail 8 can be prevented from getting in the way when the luggage is taken in and out of the rear cargo compartment 5.

  In particular, as shown in the above-described embodiment, the hanging portion 19 and the bent portion 20 of the connecting link 9 are inclined so as to extend outward from the lower side when viewed from the rear surface of the vehicle body, as shown in FIG. When the back door 3 is closed, when the hanging portion 19 and the bent portion 20 of the connecting link 9 are arranged along the side portion of the rear opening 2, the connecting link 9 prevents the rear view. There is an advantage that the upper part of the connecting link 9 can be prevented from interfering with the side part of the rear opening 2 when the back door is opened.

  Moreover, in the said embodiment, the said bending part 20 is installed so that it may extend diagonally toward the front side of a vehicle body with respect to the hanging part 19 of the said connection link 9, and the vertical direction intermediate part of the said connection link 9 is carried out. Since the connecting link 9 is formed in an L shape when viewed from the side of the vehicle body, the back door 3 is opened to the upper end of the guide rail 8 as shown by the phantom line in FIG. Even when the upper end pivot 18 of the connecting link 9 is moved, there is an advantage that the upper part of the connecting link 9 can be effectively prevented from coming into contact with the upper side of the rear opening 2.

  In the above embodiment, when the pull rod 7 is slid along the guide rail 8 according to the opening / closing operation of the back door 3, the tonneau cover 6 is prevented from hanging down. In the above description, an example in which a predetermined winding tension is applied to the tonneau cover 6 by the winding mechanism disposed in the storage case 10 installed along the upper back of the back side 4 has been described. By forming the tonneau cover 6 from a material having a property, the tonneau cover 6 may be prevented from hanging down in response to the vertical movement of the pull bar 7 without providing the winding mechanism.

It is a side view showing an embodiment of a tonneau cover opening and closing device according to the present invention. It is a rear view which shows embodiment of the opening / closing apparatus of the tonneau cover which concerns on this invention. It is a top view which shows embodiment of the opening / closing apparatus of the tonneau cover which concerns on this invention. It is a perspective view which shows the specific structure of a connection lever and a guide rail. It is explanatory drawing which shows the guide direction etc. of the pulling rod by a guide rail. It is explanatory drawing which shows the correspondence etc. of a closing operation direction and a guide direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper hinge part 2 Back opening part 3 Back door 5 Rear part luggage compartment 6 Tonneau cover 7 Pull rod 8 Guide rail 9 Connection link

Claims (5)

  A back door that is installed at the rear of the vehicle body and swings and displaces with the upper hinge as a fulcrum so as to open and close the rear opening, and so as to cover the upper part of the rear cargo compartment located in front of the rear opening. The tonneau cover to be installed, the pull bar provided at the rear end of the tonneau cover, a pair of left and right guide rails that slidably support the left and right ends of the pull bar, and the left and right ends of the pull bar are backdoors. And a driving force corresponding to the opening / closing operation of the back door is transmitted to the pulling rod through the connecting link, so that the pulling rod slides and displaces along the guide rail. A tonneau cover opening and closing device configured so that the rear end portion of the tonneau cover is driven up and down in conjunction with the center of the guide rail in the vertical direction when viewed from the side of the vehicle body. The angle formed by the input direction of the closing operation force acting on the pulling rod from the connecting link and the guide direction of the pulling rod by the guide rail at the time of closing the back door is an obtuse angle. The tonneau cover opening and closing device is characterized in that the guide direction of the pulling rod by the guide rail is set.   The angle formed by the input direction of the closing operation force at the upper end of the guide rail and the guide direction of the pulling rod is greater than the angle formed by the input direction of the closing operation force and the guide direction of the pulling rod at the middle portion of the guide rail. The tonneau cover opening and closing device according to claim 1, wherein the opening and closing device is set to a large value.   The tonneau cover opening and closing device according to claim 1 or 2, wherein the guide direction of the pulling rod at the lower end of the guide rail is set to be substantially horizontal.   The tonneau cover opening and closing device according to claim 2 or 3, wherein the angle is continuously changed at a portion where the angle formed by the input direction of the closing operation force and the guide direction of the pulling bar changes.   The upper portion of the guide rail is separated from the rear opening portion that is inclined downwardly and extends substantially linearly when viewed from the side of the vehicle body, and the lower end portion of the guide rail is brought close to the rear opening portion. 5. A tonneau cover opening and closing device according to any one of claims 1 to 4, wherein a guide rail is installed as described above.

Images