JP5577389B2 - Opening and closing device for vehicle opening - Google Patents

Description

  The present invention relates to a technique for improving an opening / closing device for an opening of a vehicle.

  An opening / closing device for an opening of a vehicle opens and closes various openings by opening / closing bodies. As the opening / closing device for opening, for example, a device that opens and closes a trunk opening with a trunk lid is known from Patent Document 1.

  A vehicle opening / closing device known from Patent Document 1 is a trunk opening formed in a rear portion of a vehicle body, a trunk lid that opens and closes the trunk opening, and the trunk lid can swing to the vehicle body. And a torsion bar for urging the hinge arm in the opening direction of the trunk lid.

  More specifically, one end of the torsion bar is connected to the vehicle body with its relative rotation restricted. The other end portion of the torsion bar is formed in a substantially crank shape bent outward in the radial direction, and a resin elastic pipe is rotatably fitted around the center of the pipe at the tip of the crank portion. The biasing force of the torsion bar is transmitted to the hinge arm via the elastic pipe. The hinge arm opens the trunk lid by the biasing force.

  The opening / closing speed of the trunk lid is preferably an optimum speed. For this purpose, the swing speed of the hinge arm is required to be set to an optimum value. However, little sliding friction is generated between the elastic pipe that is rotatably fitted to the torsion bar and the hinge arm. Since the swing speed of the hinge arm depends only on the urging force of the torsion bar, it is not always an optimum value. On the other hand, it is conceivable to newly provide a mechanism for generating a frictional force for setting the opening / closing speed of the trunk lid, but this is not a good solution because the number of parts increases.

Japanese Utility Model Publication No. 1-079775

  An object of the present invention is to provide a technique capable of optimizing the opening / closing speed of an opening / closing body.

  According to the first aspect of the present invention, the opening / closing body that opens and closes the opening formed in the vehicle body, the hinge arm that supports the opening / closing body on the vehicle body so as to be swingable, and the hinge arm that opens the opening / closing body And an opening / closing device for a vehicle opening including a torsion bar for biasing to a slide rail portion provided on the hinge arm and a sliding surface of the slide rail portion on a sliding surface of the hinge arm. And a slide surface of the slider is held by the urging force of the torsion bar in a state in which the slide surface of the slider is slidably in contact with the slide surface of the slide rail portion. The rail portion has a frictional force increasing portion having a large frictional force with the slider in a part of the slidable region of the slider. Opening opening-closing device for a vehicle according to is provided.

  According to a second aspect of the present invention, preferably, the frictional force increasing portion is formed by a raised surface in which a part of the sliding surface of the slide rail portion is raised in a direction opposite to a biasing direction of the torsion bar. It is configured.

  More preferably, the slide rail portion is configured by a substantially flat plate-like member, and the slider has an edge of the slide rail portion from an edge on both sides along the slide direction of the slide surface. A pair of arm portions formed in a substantially L shape so as to wrap, and the pair of arm portions from the slide surface of the slider to the vicinity of the edge of the slide rail portion, A pair of extending parts extending to the back side of the pair of parts, and a pair of folded parts extending in a direction facing each other along the back surface of the slide rail part from the front ends of the pair of extending parts, The size of the interval from the slide surface to the pair of folded portions is set to be larger than the thickness of the slide rail portion.

  More preferably, the size of the interval is set when the slide surface of the slider slides over the raised surface with respect to the slide surface of the slide rail portion. The size is set such that the pair of folded portions of the slider can temporarily contact the back surface of the slide rail portion.

  More preferably, the bar position corresponding to the portion to which the torsion bar is connected in the slide surface of the slider is set such that the pair of folded portions is the pair of the slide rail portions. It is set so as to be located at a position immediately before reaching the top of the raised surface when it is temporarily in contact with the back surface.

  As described in claim 6, more preferably, the top of the raised surface is continuous with a flat surface on which the slide surface of the slider can slide at the same height, and the flat surface is It is parallel to a surface other than the raised surface in the sliding surface.

  More preferably, the raised surface is adjacent to a stop position of the slider when the opening / closing body is fully closed.

  In the invention according to claim 1, the sliding surface of the slider is held by the urging force of the torsion bar in a slidable contact state with the sliding surface of the slide rail portion. For this reason, a sliding frictional force is generated between the sliding surface and the sliding surface. By appropriately setting the sliding friction force, the swing speed of the hinge arm can be set to an optimum value. As a result, the opening / closing speed of the opening / closing body can be easily set to an optimum speed. Moreover, it is not necessary to provide a mechanism for generating a frictional force for setting the opening / closing speed of the opening / closing body, and as a result, the number of parts can be reduced.

  Furthermore, in the invention according to claim 1, the slide rail portion has a frictional force increasing portion having a large frictional force with the slider in a part of the slidable region of the slider. For this reason, the sliding friction force between the slide rail portion and the slider when the slider slides in the friction force increasing portion in the slidable region (sliding friction force at the increased portion) is other than the friction force increasing portion. It is larger than the sliding frictional force when the slider slides on the other part (sliding frictional force of the general part).

  Since only the frictional force increasing portion is provided in the slide rail portion, the frictional force increasing portion can be easily set as appropriate so that the sliding frictional force at the increased portion exceeds the urging force of the torsion bar. For example, the size, shape, surface roughness, and presence / absence of the protrusion of the frictional force increasing portion can be easily set. In addition, the configuration of the frictional force increasing portion is simple, and it is not necessary to provide a separate component from the slide rail portion, and the cost does not increase.

  The hinge arm and the opening / closing body during the opening / closing movement can be temporarily stopped at an arbitrary opening degree simply by making the sliding frictional force of the increased portion exceed the sliding load due to the urging force of the torsion bar. Moreover, when the sliding frictional force at the increased portion exceeds the sliding load due to the urging force of the torsion bar, it is possible to suppress so-called pop-up that is fully opened at a time when the opening / closing body starts to open. Moreover, it is not necessary to provide a separate member for suppressing pop-up.

  In the invention according to claim 2, the frictional force increasing portion is configured by a raised surface in which a part of the sliding surface of the slide rail portion is raised in the opposite direction to the biasing direction of the torsion bar. The sliding frictional force increases as the sliding surface of the slider rides on the raised surface against the urging force of the torsion bar. The frictional force increasing portion can be configured with a simple configuration.

  In the invention which concerns on Claim 3, the slide rail part is comprised by the substantially flat member. On the other hand, the slider has a pair of arm portions formed in a substantially L shape so as to wrap around the edge of the slide rail portion from both edges along the sliding direction of the slide surface. The pair of arm portions includes a pair of extending portions extending to the back surface side of the slide rail portion, and a pair of folded portions extending in directions facing each other from the tips of the pair of extending portions. For this reason, a pair of slide grooves which are opened to face each other are formed on both side edges along the slide direction on the slide surface of the slider. The pair of slide grooves are slidably fitted to edges on both sides of the slide rail portion. For this reason, the slider does not slip out in the front-back direction with respect to the substantially flat slide rail portion, that is, in the biasing direction or the counter-biasing direction of the torsion bar.

  Furthermore, the groove width of the pair of slide grooves, that is, the distance between the slide surface of the slider and the pair of folded portions is set to be larger than the thickness of the slide rail portion. Moreover, the slider is held in a state in which the slider is always in contact with the slide rail portion in the urging direction of the torsion bar. For this reason, when the slide surface of the slider does not ride on the raised surface, the folded portions of the pair of arm portions do not contact the back surface of the slide rail portion. Accordingly, the frictional resistance can be suppressed because the contact area is small.

  In the invention according to claim 4, when the slide surface of the slider slides over the raised surface with respect to the slide surface of the slide rail portion, the pair of folded portions of the slider has a size. The size is set so that the back surface of the slide rail portion can be temporarily brought into contact. For this reason, when a slide surface gets over a raised surface, each folding | returning part of a pair of arm part contacts the back surface of a slide rail part temporarily. Accordingly, the contact area temporarily increases, so that the frictional resistance can be temporarily increased.

  In the invention according to claim 5, the bar position corresponding to the portion where the torsion bar is connected in the slide surface of the slider is such that when the pair of folded portions are temporarily in contact with the back surface of the slide rail portion, It is set so as to be located at a position immediately before reaching the top of the raised surface. For this reason, the frictional resistance temporarily increases immediately before the slide surface gets over the top of the raised surface. Immediately after that, when the slide surface gets over the top of the raised surface, the folded portions of the pair of arm portions do not contact the back surface of the slide rail portion, so the frictional resistance decreases again. As a result, the opening / closing body can be opened with a light force.

  In the invention according to claim 6, a flat surface on which the slide surface of the slider can slide at the same height is continuous at the top of the raised surface, and the flat surface is other than the raised surface in the slide surface. It is parallel to the plane. For this reason, after a slide surface gets over the top part of a raised surface, each folding | returning part of a pair of arm part maintains the state which is not in contact with the back surface of a slide rail part. Accordingly, since the state in which the frictional resistance is small is maintained, the opening / closing body can be opened with a light force without fluctuation.

  In the invention which concerns on Claim 7, the raised surface is adjacent to the stop position of the slider at the time of a fully-closed state of an opening-closing body. For this reason, for example, when the latch mechanism of the opening / closing body is unlatched, the slider can be temporarily stopped by the raised surface when the opening / closing body is slightly opened from the fully closed state. Since the slider pauses, the opening / closing body also pauses. Therefore, an unnecessary opening operation of the opening / closing body can be suppressed. For example, after an unlatch operation, in order to open and close the opening / closing body, the opening / closing body is temporarily stopped in a state where an opening space is secured between the opening and the opening / closing body. be able to.

It is a perspective view of the rear part of the vehicle provided with the opening part opening / closing apparatus which concerns on Example 1 of this invention. FIG. 2 is a perspective view of the opening / closing device shown in FIG. 1. FIG. 3 is a perspective view of a left hinge mechanism, a torsion bar, and a slide mechanism shown in FIG. 2. FIG. 4 is a side view of the left hinge mechanism, torsion bar, and slide mechanism shown in FIG. 3. FIG. 5 is an exploded view of the left hinge mechanism, torsion bar, and slide mechanism shown in FIG. 4. FIG. 6 is an exploded view illustrating an enlarged connection configuration of a bar support member and a torsion bar with respect to the left hinge bracket illustrated in FIG. 5. FIG. 3 is a conceptual diagram schematically showing a relationship among a left hinge mechanism, a torsion bar, and a slide mechanism shown in FIG. 2. FIG. 5 is a cross-sectional view of the swing base end portion and the hinge mechanism shown in FIG. 4 taken along the length of the swing base end portion. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. FIG. 9 is an exploded view of the slide mechanism shown in FIG. 8. FIG. 11 is an enlarged configuration diagram illustrating a bar connection opening, a bar guide portion, and a bar holding portion of the slider shown in FIG. 10. FIG. 11 is a relationship diagram illustrating a relationship between a slide rail portion and a slider illustrated in FIG. 10. FIG. 3 is a graph showing the relationship between the torque due to the weight of the trunk lid shown in FIG. 2 and the torque due to the torsion bar. FIG. It is sectional drawing which carried out the cross section of the swing base end part and hinge mechanism of the opening-and-closing switch apparatus concerning Example 2 of this invention along the length of this swing base end part. FIG. 15 is a perspective view of the slide mechanism shown in FIG. 14. FIG. 15 is an exploded view of the slide rail portion, the slider, and the other end portion of the torsion bar shown in FIG. 14. It is the figure which looked at the relationship between the slide rail part shown by FIG. 16, and a slider from the back side. It is a figure which shows the state which the slider shown by FIG. 14 is located in the reference plane of a slide rail part. It is a figure which shows the state which the slider shown by FIG. 18 displaced to the protruding surface of a slide rail part. It is a figure which shows the state which the slider shown by FIG. 19 displaced to the high level surface of a slide rail part. It is a figure explaining the opening / closing state of the trunk lid shown by FIG.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below based on an accompanying drawing. "Front", "Rear", "Left", "Right", "Up", "Down" follow the direction seen from the driver, Fr is front, Rr is rear, Le is left, Ri is right , CL indicates the center of the vehicle width.

  A vehicle opening / closing device according to a first embodiment will be described with reference to FIGS. FIG. 1 shows a rear portion of a vehicle 10 provided with an opening opening / closing device 11. The opening / closing device 11 is for opening and closing various openings 13 formed in the vehicle 10 by an opening / closing body 14. For example, the opening / closing device 11 is configured to open / close a trunk opening 13 (opening 13) of a trunk room 12 provided at the rear of the vehicle 10 by a trunk lid 14 (opening / closing body 14).

  As shown in FIGS. 1 and 2, the opening / closing device 11 includes a trunk lid 14, left and right hinge mechanisms 20L and 20R, left and right torsion bars 40L and 40R, and left and right slide mechanisms 50 and 50. And is composed of. The left and right hinge mechanisms 20L and 20R are located on the left and right sides in the trunk room 12. The left and right hinge mechanisms 20L, 20R have substantially the same configuration except that they are configured symmetrically to each other. The left and right torsion bars 40L and 40R have substantially the same configuration except that they are configured symmetrically with respect to each other. Hereinafter, the left hinge mechanism 20L and the left torsion bar 40L will be mainly described, and the right hinge mechanism 20R and the right torsion bar 40R will be described as necessary.

  The left hinge mechanism 20L includes a hinge bracket 21L attached to a panel 17 (for example, the parcel shelf 17) of the vehicle body 16, and a hinge arm 31L that supports the trunk lid 14 so as to be swingable on the hinge bracket 21L. As a result, the trunk lid 14 is supported by the vehicle body 16 so as to be swingable.

  As shown in FIGS. 3 to 5, the hinge bracket 21 </ b> L is a bent product of a steel plate including a mounted portion 22, an arm support portion 23, and a bar support portion 24.

  The attached portion 22 is a portion attached to the panel 17. The mounted portion 22 is formed in a substantially inverted U shape with its lower part opened when viewed from the rear of the vehicle. Mounting holes 22 a and 22 b are provided in the top plate of the mounted portion 22, and are bolted to the lower surface of the panel 17.

  The arm support portion 23 is formed integrally with an intermediate portion of the attached portion 22. More specifically, the arm support portion 23 is such that the left and right side plates of the attached portion 22 extend rearward of the vehicle as they are, and support holes 23a and 23b that penetrate in the vehicle width direction in order to fit the support shaft 25. Is formed.

  The bar support portion 24 is formed integrally with the lower portion of the attached portion 22 and the lower portion of the arm support portion 23, and is set wider in the vehicle width direction than the attached portion 22 and the arm support portion 23. When viewed from the rear of the vehicle, the bar support portion 24 is formed in a substantially inverted U shape with the lower portion opened, and in order to support the left torsion bar 40L, a horizontal left and right opening opened to the rear of the vehicle body. First slits 24a and 24b are formed. The slits 24a and 24b are located concentrically with each other in the vehicle width direction.

  As shown in FIGS. 5 and 6, resinous left and right bar support members 26, 26 are attached to the left and right first slits 24 a, 24 b. The left and right bar support members 26 and 26 smooth the torsional motion of the left torsion bar 40L when the left and right first slits 24a and 24b support the other end 42 of the left torsion bar 40L. It is a member. The left and right bar support members 26, 26 have slits 26a, 26a for later insertion of the left torsion bar 40L, and snap-fit (resistive locking) to the left and right first slits 24a, 24b. ).

  As shown in FIGS. 5 and 6, the side plate of the bar support member 24 on the inner side in the vehicle width direction is formed with a second slit 24c and a bar retaining hole 24d behind the first slit 24b. The bar retaining hole 24d is located on the second slit 24c and penetrates in the vehicle width direction. The second slit 24c and the bar latching hole 24d are parts for latching the one end 41 of the right torsion bar 40R.

  As shown in FIGS. 2 to 4, the arm support portion 23 supports the swing base end of the hinge arm 31 </ b> L by the support shaft 25 so as to be able to swing back and forth. The hinge arm 31L is a member formed in a substantially U shape in side view, for example, by a square pipe having a constant cross-sectional shape and thickness, and the trunk lid 14 is attached to the tip of the swing. The portion 32 on the swing base end side in the hinge arm 31L is hereinafter referred to as “arm base end portion 32”. The arm base end portion 32 is a linear portion that extends straight forward and downward from the swing center P1 (center P1 of the support shaft 25) with respect to the vehicle body 16 when the trunk lid 14 is fully closed.

  As shown in FIG. 4, the arm base end portion 32 has a front fully lower lid fully closed position P11 indicated by a solid line and a rear lower fully open lid position P12 indicated by an imaginary line with respect to the swing center P1. It is possible to swing back and forth between the two. The lid fully closed position P11 is a position when the trunk lid 14 is fully closed as shown in FIG. The lid fully open position P12 is a position when the trunk lid 14 is fully opened as shown in FIG.

  As shown in FIG. 2, the left torsion bar 40L is a biasing member that extends in the vehicle width direction and biases the left hinge arm 31L in the trunk lid 14 opening direction Ro. The right torsion bar 40R is a biasing member that extends in the vehicle width direction and biases the right hinge arm 31R in the opening direction Ro of the trunk lid 14, and has substantially the same function as the left torsion bar 40L. Have The left and right torsion bars 40L, 40R intersect with each other in the longitudinal direction of the vehicle body and are fixed to the parcel shelf 17 by a clip 48 so as not to move unnecessarily.

  As shown in FIG. 7, one end 41 of the left torsion bar 40L is folded back in a substantially U shape, and is latched in the second slit 24c and the bar latching hole 24d of the right hinge bracket 21R. It has been. As a result, the one end portion 41 of the left torsion bar 40L is connected to the vehicle body 16 while being restricted in relative rotation.

  As shown in FIGS. 4 to 6, the other end portion 42 of the left torsion bar 40 </ b> L is formed in a substantially crank shape (substantially U shape). Specifically, the other end 42 is formed between a pair of extending portions 45, 45 extending from the middle of the linear torsion bar 40L to the outer side in the bar radial direction, and between the ends of the pair of extending portions 45, 45. And a linear pressing portion 43 (biasing force acting portion 43). The pressing portion 43 is parallel to the linear torsion bar 40L.

  Furthermore, the left torsion bar 40 </ b> L has bar supported portions 44, 44 at the other end portion 42. The bar supported portions 44, 44 are rotatably supported by left and right first slits 24a, 24b (bar support portions 24a, 24b) via left and right bar support members 26, 26. That is, the left torsion bar 40L is supported to be rotatable with respect to the vehicle body 16. The support center P2 of the bar supported portions 44, 44 by the left and right first slits 24a, 24b, that is, the support center P2 of the left torsion bar 40L with respect to the vehicle body 16 is located behind the swing center P1 of the hinge arm 31L. ing. More specifically, the support center P2 of the other end 42 of the left torsion bar 40L is located below the swing center P1 of the hinge arm 31L. The pressing portion 43 is offset from the bar supported portions 44, 44 by an offset amount Lo (see FIG. 5). The swing radius of the pressing portion 43 with respect to the support center P2 of the left torsion bar 40L is the same as the offset amount Lo.

  As shown in FIG. 7, the pressing portion 43 of the other end portion 42 of the left torsion bar 40 </ b> L connects the hinge arm 31 </ b> L to the opening direction Ro of the trunk lid 14 (see FIG. 2) via the left slide mechanism 50. Is energized.

  As shown in FIGS. 2 to 4, the left and right slide mechanisms 50, 50 include left and right slide rail portions 51 (only the left is shown) and left and right sliders 61 (only the left is shown). The left and right slide rail portions 51 and the left and right sliders 61 are made of, for example, hard resin.

  The left and right slide rail portions 51 have the same configuration. The left and right sliders 61 have the same configuration. Hereinafter, the left slide rail portion 51 and the left slider 61 will be mainly described, and the right slide rail portion 51 and the right slider 61 will be described as necessary.

  As shown in FIGS. 3 and 4, the left slide rail portion 51 is configured by a substantially flat plate-like member that is elongated vertically, and the front surface 32a (the front surface 32a of the vehicle body, the front surface) of the left hinge arm 31L. 32a). That is, the slide rail portion 51 is located on the front surface 32 a of the arm base end portion 32. The upper end 51 d of the slide rail portion 51 is located closer to the swing center P <b> 1 of the arm base end portion 32.

  More specifically, as shown in FIGS. 5, 8, and 9, the slide rail portion 51 is configured by a separate member with respect to the arm base end portion 32, and the back surface 51 b is formed on the arm base end. It is a member that is superimposed on the front surface 32 a of the portion 32. For this reason, the slide rail portion 51 can be easily produced as compared with the case where the slide rail portion 51 is formed integrally with the large arm base end portion 32.

  In a state where the back surface 51 b of the slide rail portion 51 is superimposed on the front surface 32 a of the arm base end portion 32, the back surface 51 b of the slide rail portion 51 is parallel to the front surface 32 a of the arm base end portion 32. The slide rail portion 51 has a constant thickness. Accordingly, the front surface 51 c (slid surface 51 c) of the slide rail portion 51 is parallel to the back surface 51 b of the slide rail portion 51 and parallel to the front surface 32 a of the arm base end portion 32.

  The front surface 32a of the arm base end portion 32 has a first mounting hole 33 located near the swing center P1 of the arm base end portion 32, and is spaced further downward from the swing center P1 than the first mounting hole 33. And a second mounting hole 34 located at the site. The slide rail portion 51 has a substantially L-shaped latching claw portion 52 that is hooked in the first mounting hole 33 and a clip portion 53 that is locked in the second mounting hole 34 by snap fitting. As shown in FIG. 9, the width of the slide rail portion 51 is set wider than the arm base end portion 32.

  The procedure for assembling the slide rail portion 51 to the arm base end portion 32 is as follows. First, it latches, inserting the latching claw part 52 with respect to the 1st attachment hole 33. FIG. Next, as it is, the clip portion 53 is pushed into the second mounting hole 34 positioned lower than the first mounting hole 33 to hook the claw.

  As shown in FIGS. 8, 10, and 11, the slider 61 is slidable in the arm longitudinal direction of the hinge arm 31 by being guided by the slide rail portion 51 according to the swing movement of the arm base end portion 32, that is, Vertical displacement is possible. The left and right sliders 61 are connected to the left and right torsion bars 40L and 40R, that is, the other end portions 42 and 42 are connected.

  The slider 61 has a pair of arm portions 62, 62 formed in a substantially L shape so as to wrap the edges 51a, 51a of the slide rail portion 51 from both edges 61a, 61a along the sliding direction. The pair of arm portions 62, 62 includes a pair of extending portions 63, 63 and a pair of folded portions 64, 64.

  The pair of extending portions 63, 63 passes from the slide surface 61b (opposing surface 61b, back surface 61b) facing the slide surface 51c of the slide rail portion 51 through the vicinity of the edges 51a, 51a of the slide rail portion 51. The slide rail 51 extends toward the back surface 51b. The pair of folded portions 64, 64 extend from the ends of the pair of extending portions 63, 63 in a direction facing each other along the back surface 51 b of the slide rail portion 51. The distance ds from the slide surface 61 b of the slider 61 to the pair of folded portions 64, 64 is set to be larger than the thickness tr of the slide rail portion 51.

  In this manner, the slide surface 61b of the slider 61 is formed with a pair of slide grooves 65, 65 that are open to face each other on the edges 61a, 61a on both sides along the slide direction. The groove width ds (interval ds) of the pair of slide grooves 65, 65 is set to be larger than the thickness tr of the edge portions 51a, 51a on both sides of the slide rail portion 51. The slider 61 is slidably fitted in the pair of slide grooves 65 and 65.

  The slide surface 51c of the slide rail portion 51 and the slide surface 61b of the slider 61 are formed as flat surfaces. The slide surface 61 b of the slider 61 can slide on the slide surface 51 c of the slide rail portion 51.

  As shown in FIGS. 3, 8, and 10, the slider 61 has a bar connection opening 71, a bar guide part 75, and a bar holding part 77. The bar connection opening 71 is a portion that connects the pressing portion 43 of the other end portion 42 of the torsion bar 40L by fitting, and is formed integrally with the slider 61. Thus, the other end portion 42 (pressing portion 43) of the torsion bar 40L is connected to the slider 61 so as to be capable of relative rotation and torsional displacement.

  The slider 61 is always held in surface contact with the slide rail portion 51 in the urging direction Rt of the torsion bar 40L. In other words, the slide surface 61b of the slider 61 is held so as not to be separated from the slide rail portion 51, that is, held without being separated in the direction Rt in which the torsion bar 40L biases the hinge arm 31L.

  The bar connection opening 71, the bar guide part 75, and the bar holding part 77 will be described in more detail with reference to FIG. FIG. 11A shows the slider 61 as viewed from the side. FIG.11 (b) has shown the cross-sectional structure along the bb line of Fig.11 (a). FIG.11 (c) has shown the slider 61 seen from c arrow line direction of Fig.11 (a).

  The bar connection opening 71 is constituted by a groove portion extending in an orthogonal direction orthogonal to the slide direction SL of the slider 61 with respect to the slide rail portion 51. The groove 71 (bar connection opening 71) is open on the opposite side of the back surface 61 b of the slider 61. In other words, the groove 71 is opened in the opposite direction to the direction Rt in which the hinge arm 31L is urged by the torsion bar 40L shown in FIG.

  Further, the groove 71 penetrates in the orthogonal direction SC perpendicular to the sliding direction SL of the slider 61. The groove portion 71 includes a central portion 72 located at the center in the groove longitudinal direction, and both end portions 73 and 73 located on both sides in the groove longitudinal direction with respect to the central portion 72. The central part 72 is formed in a straight groove parallel to the groove longitudinal direction. Both end portions 73 and 73 are formed as tapered grooves extending from the central portion 72 toward the outside in the longitudinal direction of the groove.

  For this reason, as shown in FIGS. 10 and 11, the other end portion 42 of the torsion bar 40 </ b> L is connected only to the straight groove 72 (center portion 72) even when it is inclined with respect to the groove portion 71. That is, the inclined other end portion 42 does not hit the longitudinal direction end portions 73 of the groove portion 71. Therefore, the durability of the bar connection opening 71 can be enhanced. Moreover, even if the other end 42 of the torsion bar 40L is inclined with respect to the groove 71, the other end 42 can be received only by the straight groove 72. The urging force of the other end portion 42 acts on the center position (center portion 72) of the groove portion 71 in the groove longitudinal direction. As a result, the inclination of the slider 61 with respect to the slide rail portion 51 can be prevented, so that the slider 61 can be slid more smoothly.

  The bar guide portion 75 is configured to push the pressing portion 43 of the torsion bar 40L supported by the first slits 24a and 24b of the bar support portion 24 (see FIG. 5) into the bar connecting opening 71. The abutting portion 43 is an inclined portion that can be guided to the bar connecting opening 71 and is formed integrally with the slider 61. The inclination direction of the bar guide portion 75 is a direction in which a downward slope is formed from the portion of the arm base end portion 32 near the swing center P1 (see FIG. 4) toward the bar connection opening 71.

  The bar holding portion 77 is a portion that restricts the pressing portion 43 fitted in the bar connection opening 71 so as not to drop out of the bar connection opening 71, and is formed integrally with the slider 61. . The bar holding portion 77 rises from the side opposite to the bar guide portion 75 with respect to the slider 61, and hangs down from the standing tip toward the opening end of the bar connection opening 71. 61 can be elastically deformed in the sliding direction SL. When the pressing portion 43 is fitted into the bar connection opening 71, the bar holding portion 77 is elastically deformed to allow the pressing portion 43 to be fitted. After the pressing portion 43 is fitted into the bar connecting opening 71, the bar holding portion 77 restricts the pressing portion 43 from dropping from the bar connecting opening 71.

  As shown in FIGS. 10 and 12, the slide rail portion 51 includes a pair of locking concave portions 55, 55, a wide portion 56, a pair of slopes 57, 57, and a retaining portion 58. FIG. 12A shows that the slider 61 is located above the slide rail portion 51. When the trunk lid 14 (see FIG. 2) is in the fully closed state, the slider 61 is in the position shown in FIG. This position corresponds to the fully closed position P21 shown in FIG.

  The wide portion 56 is a wide portion in the slide rail portion 51 where the pair of locking concave portions 55 and 55 are located. The width dimension We of the wide portion 56 is set to be larger than the width dimension Wn of the other portion 59 (normally the slide portion 59) other than the wide portion 56 in the slide rail portion 51.

  The pair of slopes 57, 57 are formed on the edges 51a, 51a on both sides of the slide rail portion 51 so that the width between the normal slide portion 59 and the wide portion 56 changes gradually. The points 57a and 57a at which the pair of slopes 57 and 57 starts to tilt from the edges 51a and 51a on both sides of the normal slide portion 59 are referred to as slope start points 57a and 57a.

  The pair of locking recesses 55 and 55 are formed, for example, on the edges 51 a and 51 a on both sides of the slide rail portion 51. That is, the pair of locking recesses 55 and 55 are formed in a groove having an arcuate cross section penetrating in the thickness direction of the slide rail portion 51. On the other hand, the slider 61 is formed with a pair of convex locking portions 79, 79 that can be locked to the pair of locking concave portions 55, 55. The pair of locking portions 79 and 79 protrude from the inner surfaces of the pair of extending portions 63 and 63 so as to face each other, and are formed in a convex shape having an arcuate cross section that is elongated in the extending direction of each extending portion 63 and 63 Is formed. The distance between the tips of the pair of locking portions 79, 79 is set to be the same as or slightly larger than the width dimension Wn of the normal slide portion 59 of the slide rail section 51.

  The slider 61 shown in FIG. 12A is guided by the slide rail portion 51 and slides downward. As a result, as shown in FIG. 12 (b), the pair of locking portions 79 and 79 are positioned at slope start points 57 a and 57 a at which the pair of slopes 57 and 57 starts to tilt. For this reason, the slider 61 is restricted from further descending with respect to the slide rail portion 51. That is, the pair of slope starting points 57a and 57a has a stopper function. Hereinafter, the pair of slope starting points 57a and 57a is appropriately referred to as “a pair of stoppers 57a and 57a”.

  As described above, the slide rail portion 51 has the stoppers 57 a and 57 a for defining the lowest position where the slider 61 can be lowered. The positions of the pair of stoppers 57a and 57a correspond to the lowest limit position P24 shown in FIG. That is, the slider 61 is lowered according to the swing motion of the arm base end portion 32, but is held on the lower limit position P24 by the stoppers 55 and 55. For this reason, the assembly property of the slide rail part 51, the slider 61, and the other end part 42 of the torsion bar 40 can be further improved.

  Thereafter, the slider 61 positioned at the slope start points 57a and 57a is further pushed down, whereby the slider 61 is guided to the slide rail portion 51 and further slides downward. Since the slide rail portion 51 has the pair of slopes 57, the slider 61 can smoothly move between the normal slide portion 59 and the wide portion 56. Since the slider 61 is a resin product, the pair of extending portions 63 and 63 can be slightly elastically deformed in directions away from each other. When the slider 61 moves from the normal slide portion 59 to the wide portion 56, the pair of locking portions 79 and 79 ride on the wide portion 56, and are further locked to the pair of locking concave portions 55 and 55. In this case, the pair of extending portions 63 and 63 can be relatively strongly locked by the self-returning force.

  FIG. 12C shows a state in which the pair of locking portions 79 and 79 are locked to the pair of locking recesses 55 and 55 by the slider 61 being positioned below the slide rail portion 51. The slider 61 can be held on the slide rail portion 51 by locking the locking portions 79, 79 in the locking recesses 55, 55. For this reason, after the slider 61 is temporarily assembled on the slide rail portion 51 and can be transported to the next process, the transportability is improved.

  Referring to FIG. 4, as described above, the arm base end portion 32 has the lid fully closed position P <b> 11 indicated by the solid line and the rear center indicated by the imaginary line with respect to the swing center P <b> 1. A back-and-forth swing motion is possible between the lower lid fully open position P12. The lid fully closed position P11 is a position when the trunk lid 14 is fully closed as shown in FIG. The lid fully open position P12 is a position when the trunk lid 14 is fully opened as shown in FIG.

  In this case, the center of the pressing portion 43 of the torsion bar 40L is indicated by an imaginary line and a fully closed position P21 indicated by a solid line with respect to the swing center P2 (support center P2 of the torsion bar 40L). After that, a swinging motion is performed on the swing trajectory R1 between the fully open position P22 below. That is, when the arm base end portion 32 is located at the lid fully closed position P11, the center of the pressing portion 43 is located at the fully closed position P21. When the arm base end portion 32 is located at the lid fully open position P12, the center of the pressing portion 43 is located at the fully open position P22. The swing locus R1 of the pressing portion 43 is a perfect circle locus with reference to the support center P2 of the other end portion 42 of the torsion bar 40L (support center P2 of the torsion bar 40L).

  A point P23 (match point P23) at which the swing locus R1 of the pressing portion 43 matches the swing center line Ls passing through the two upper and lower swing centers P1 and P2 is between the fully closed position P21 and the fully open position P22. To position. The swing locus of the coincidence point P23 with reference to the swing center P1 of the arm base end portion 32 is R2. The two swing trajectories R1 and R2 are downward arc-shaped trajectories based on the swing centers P1 and P2.

  As described above, the upper and lower two swing centers P1 and P2 do not match. That is, the center P2 is located below the center P1. Therefore, the swing angle at which the pressing portion 43 swings from the fully closed position P21 to the fully open position P22 is larger than the swing angle at which the arm base end portion 32 swings from the lid fully closed position P11 to the lid fully open position P12 ( There is an angle difference). As a result, the swing trajectory R1 of the match point P23 based on the center P2 does not match the swing trajectory R2 of the match point P23 based on the center P1.

  Even if there is such an angle difference, the first embodiment includes the slide mechanism 50, so that each part can move smoothly. That is, the angle conversion is performed by the slide mechanism 50. Specifically, the slider 61 can slide up and down only on the slide rail portion 51 along the arm base end portion 32. As a result, the slider 61 performs angle conversion according to the swing motion of the pressing portion 43.

  When the two swing trajectories R1 and R2 are viewed from the two upper and lower swing centers P1 and P2 in the direction along the swing center line Ls (the direction of the arrow Lx), the coincidence point P23 corresponds to the pressing portion 43 and the slider 61. This is the lowest operation position. The coincidence point P23 is hereinafter referred to as a “lowermost operation position P23”. The lowest operation position P23 can be considered as a lower limit of the slider 61 that can be lowered with respect to the slide rail portion 51. That is, the lowest movement position P23 is a lower limit position in the movable range of the slider 61 in a state where the torsion bar 40L is coupled to the slider 61.

  When the pressing portion 43 swings from the fully closed position P21 to the fully open position P22, the slider 61 receiving the urging force of the torsion bar 40L swings backward while descending from the fully closed position P21 to the most lowered operation position P23. After that, it swings backward while ascending from the lowest-down operation position P23 to the fully open position P22.

  On the swing center line Ls, the lowest limit position P24 is set at the lowest descending operation position P23 where the slider 61 descends most according to the swing movement of the arm base end portion 32 or below the lowest descending operation position P23. . The lowest limit position P24 is a lower limit position in the movable range of the slider 61 in a state where the torsion bar 40L is not connected to the slider 61. That is, the lowest limit position P24 is set to the lowest descending operation position P23 or a position obtained by adding a certain allowance α that can be further lowered to the lowest descending operation position P23. A distance β (not shown) from the support center P2 of the torsion bar 40L to the lowest limit position P24 is a size obtained by adding a play allowance α to the offset amount Lo from the bar supported portion 44 to the pressing portion 43. (Β = Lo + α). However, the value of the allowance α is a value not less than 0 (α ≧ 0).

  The position of the slider 61 with respect to the slide rail portion 51 in a state where the trunk lid 14 is fully opened is set to a fully open position P22 that is higher than the lowest descending operation position P23. For this reason, even if the trunk lid 14 (see FIG. 1) is opened more than fully opened, so-called overstroke operation is performed, the slider 61 does not hit the convex stoppers 55 and 55, for example. That is, the slider 61 does not hit the stoppers 55 and 55 strongly. As a result, the durability of the stoppers 55 and 55 can be improved.

  The retaining portion 58 is formed on the slide rail portion 51 so that the slider 61 does not fall off from the lower end of the slide rail portion 51. On the sliding surface 51c of the slide rail portion 51, the slidable region Tet (see FIG. 10) of the slider 61 is a range from the upper end 51d of the slide rail portion 51 to the retaining portion 58.

  The slider 61 is detachably provided on the slide rail portion 51 located at the arm base end portion 32 from the side opposite to the stoppers 55 and 55 (the side opposite to the retaining portion 58). For this reason, the slider 61 can be easily exchanged for the slide rail portion 51 in the state provided in the arm base end portion 32. The exchanging workability of the slider 61 is improved.

  The description of the first embodiment is summarized as follows. As shown in FIG. 4, the slider 61 is always kept in surface contact with the slide rail portion 51 in the urging direction Rt of the torsion bar 40 </ b> L. For this reason, even when the other end portion 42 of the torsion bar 40L is twisted and tilted and connected to the slider 61, the state where the slider 61 is in surface contact with the slide rail portion 51 can be sufficiently maintained. . Therefore, even if the biasing force of the torsion bar 40L (see FIG. 2) acts on the hinge arm 31L in a direction slightly different from the opening direction Ro of the trunk lid 14, the swing of the hinge arm 31L and the trunk lid 14 is performed. The operation can be performed smoothly. In addition, the occurrence of so-called uneven wear, in which the contact surface between the slide rail portion 51 and the slider 61 is worn unevenly, can be suppressed as much as possible. As a result, the durability of the opening / closing device 11 can be increased.

  Furthermore, a sliding frictional force is generated between the slide rail portion 51 and the slider 61. By appropriately setting the sliding friction force, the swing speed of the hinge arm 31L can be set to an optimum value. As a result, the opening / closing speed of the trunk lid 14 can be easily set to an optimum speed. In addition, it is not necessary to provide a mechanism for generating a frictional force for setting the opening / closing speed of the trunk lid 14, and as a result, the number of parts can be reduced.

  Furthermore, the slider 61 has a bar connecting opening 71 for connecting the torsion bar 40L by fitting, that is, by fitting the other end portion 42. When the slider 61 is assembled to the slide rail portion 51 provided on the surface of the hinge arm 31L, the slider 42 is simply fitted into the bar connection opening 71 of the slider 61 and the other end 42 of the torsion bar 40L is fitted. The torsion bar 40L can be easily assembled to 61.

  In addition, the bar connection opening 71 opens in the opposite direction to the direction Rt in which the hinge arm 31L is urged by the other end 42 of the torsion bar 40L. The other end 42 of the torsion bar 40L that is twisted in the direction opposite to the biasing direction Rt is simply aligned with the bar connecting opening 71, and the other end 42 is connected to the bar by its own biasing force. It fits automatically into the opening 71 for use. Therefore, the torsion bar 40L is easily assembled to the slider 61 assembled to the hinge arm 31L. Furthermore, the hinge arm 31L can be urged in the opening direction of the trunk lid 14 by the torsion bar 40L fitted in the bar connection opening 71.

  Furthermore, the opening / closing direction of the trunk lid 14 for opening / closing the trunk opening 13 of the vehicle 10 is the vertical direction. An arm base end portion 32 of a hinge arm 31L that supports the trunk lid 14 on the vehicle body 16 is attached to the vehicle body 16 so as to be able to swing back and forth. The torsion bar 40L that urges the hinge arm 31L in the opening direction of the trunk lid 14 extends in the vehicle width direction. The support center P2 of the other end 42 of the torsion bar 40L is located behind the vehicle body relative to the swing center P1 of the hinge arm 31L. The slide rail portion 51 is located on the front surface 32 a of the arm base end portion 32. The slider 61 is guided by the slide rail portion 51 and can slide in the arm longitudinal direction of the hinge arm 31L. In the state where the trunk lid 14 is opened, the slider 61 is positioned below the hinge arm 31L.

  In order to assemble the other end portion 42 of the torsion bar 40L into the bar connection opening 71 of the slider 61, the following may be performed. The slider 61 assembled to the slide rail portion 51 automatically moves downward by opening the trunk lid 14 to the fully open position. The position of the bar connection opening 71 moved downward may be set to a position where the other end portion 42 of the torsion bar 40L can be fitted. The other end portion 42 of the torsion bar 40L twisted in the counter-biasing direction automatically fits into the bar connection opening 71 by its own biasing force. Therefore, the assembling property of the torsion bar 40L to the slider 61 assembled to the hinge arm 31L is further enhanced.

  Moreover, since the torsion bar 40L can be brought close to the hinge arm 31L, the effective space of the trunk room 12 (see FIG. 1) increases.

  Furthermore, as shown in FIG. 5, the slide rail portion 51 has a latching claw portion 52 and a clip portion 53. The latching claw portion 52 is hooked in the first mounting hole 33 located at a position near the swing center P1 of the arm base end portion 32. The clip portion 53 is locked to the arm base end portion 32 by a snap fit in the second mounting hole 34 located at a position farther from the swing center P1 than the first mounting hole 33.

  As shown in FIG. 3, the urging direction Rt of the urging force acting from the torsion bar 40L to the bar connecting opening 71 with respect to the sliding direction SL of the slider 61 with respect to the slide rail portion 51 is not a right angle. For this reason, a force in a direction away from the arm base end portion 32 often acts on the upper portion of the slide rail portion 51 (portion near the swing center P1).

  On the other hand, in the first embodiment, the latching claw portion 52 is provided on the upper portion of the slide rail portion 51. The latching claw portion 52 has a relatively stable locking performance than the clip portion 53. For this reason, the attachment state of the slide rail part 51 with respect to the arm base end part 32 can fully be maintained.

  FIG. 13 is a graph showing the relationship between the torque due to the weight of the trunk lid 14 and the torque due to the left and right torsion bars 40L and 40R in the opening / closing device 11 for the opening according to the first embodiment. In this graph, the horizontal axis represents the opening degree θ ° of the trunk lid 14 and the vertical axis represents the torque Tq (N · m). A curve Qw represented by a solid line indicates a characteristic of torque due to the dead weight of the trunk lid 14. A curve Qs represented by a broken line indicates a torque characteristic by the left and right torsion bars 40L, 40R.

  As is apparent from the curve Qw, it can be seen that the torque characteristic due to the weight of the trunk lid 14 is an upward parabola characteristic. On the other hand, as is apparent from the curve Qs, the torque characteristics of the left and right torsion bars 40L and 40R are similar to those of the curve Qw. Accordingly, the difference between the torque due to the weight of the trunk lid 14 and the torque due to the left and right torsion bars 40L and 40R is small. As a result, since the operation force for opening the trunk lid 14 by human power is small, operability is good.

  A vehicle opening / closing device 11A according to a second embodiment will be described with reference to FIGS. The vehicle opening / closing device 11A according to the second embodiment is different from the left and right slide mechanisms 50 according to the first embodiment shown in FIGS. 8 to 12 with the left and right slide mechanisms 50A (shown in FIGS. 14 to 17). The other configuration is the same as the configuration shown in FIGS. 1 to 12, and the description thereof will be omitted. Hereinafter, the left slide mechanism 50A will be described, and the description of the right slide mechanism 50A will be omitted.

  More specifically, as shown in FIGS. 14 to 17, the left slide mechanism 50A of the second embodiment includes a left slide rail portion 51A and a left slider 61A. The basic configuration of the left slide rail portion 51A is the same as that of the left slide rail portion 51 of the first embodiment. The basic configuration of the left slider 61A is the same as that of the left slider 61 of the first embodiment.

  FIG. 14 is shown corresponding to FIG. FIG. 16A is shown corresponding to FIG. FIG. 16B shows a configuration in which the lower end portion of the slider 61A shown in FIG. FIG. 17A is a view of a configuration in which the slider 61A is disassembled with respect to the slide rail portion 51A as viewed from the back side.

  As shown in FIGS. 14 to 17A, the slide rail portion 51A has a frictional force increasing portion 82 having a large frictional force with the slider 61A in a part of the slidable region Tet of the slider 61A. have. The frictional force increasing portion 82 is constituted by a raised surface in which a part of the slide surface 51c of the slide rail portion 51A is raised in the opposite direction to the biasing direction Rt (see FIG. 4) of the torsion bar 40L. . Hereinafter, the frictional force increasing portion 82 is appropriately rephrased as a “raised surface 82”.

  More specifically, the slide surface 51c of the slide rail portion 51A has a reference surface 81, the raised surface 82, and the high-order surface 83 positioned in this order from the upper end 51d toward the lower retaining portion 58. Surface. The reference surface 81, the raised surface 82, and the high-order surface 83 are continuous from the top to the bottom, and are integrally formed with the slide surface 51c.

  The reference surface 81 is a flat surface that is the lowest reference surface of the slide surface 51c, that is, the closest surface to the surface 32a of the hinge arm 31L.

  The raised surface 82 is a flat inclined surface that is gently inclined upward from the lower end 81a of the reference surface 81, that is, inclined upward from the surface 32a of the hinge arm 31L. Thus, the raised surface 82 is a surface raised in the opposite direction to the biasing direction Rt (see FIG. 4) of the torsion bar 40L.

  The high-order surface 83 (flat surface 83) is a flat surface that extends from the top portion 82a of the raised surface 82 to the retaining portion 58 as it is. That is, the top surface 82a of the raised surface 82 is continuous with the high-order surface 83 on which the slide surface 61b of the slider 61A can slide with the same height. The high-order surface 83 is parallel to the surface 81 other than the raised surface 82 in the sliding surface 51c, that is, the reference surface 81. In a state where the back surface 51b of the slide rail portion 51A is superimposed on the front surface 32a of the arm base end portion 32, the back surface 51b of the slide rail portion 51A is parallel to the front surface 32a of the arm base end portion 32. Therefore, the reference surface 81 and the high-order surface 83 are parallel to the back surface 51b (including the back surface of the edge 51a) of the slide rail portion 51A, and are parallel to the front surface 32a of the arm base end portion 32. .

  With respect to the reference surface 81, the top portion 82a of the raised surface 82 and the high-order surface 83 are at a position higher by the height Hi. The thickness T2 of the slide rail portion 51A on the top surface 82a of the raised surface 82 and the high level surface 83 is larger by the height Hi than the thickness T1 of the slide rail portion 51A on the reference surface 81 (T2 = T1 + Hi). In the slide rail portion 51 </ b> A, a raised portion 84 having a height Hi with respect to the reference surface 81 is formed.

  The inclination starting point of the raised surface 82 with respect to the reference surface 81 is located at the lower end 81 a of the reference surface 81. The region Te1 of the reference surface 81 is set in a range from the upper end 51d of the slide rail portion 51A to the lower end 81a of the reference surface 81. The region Te <b> 2 of the raised surface 82 is set in a range from the lower end 81 a of the reference surface 81 to the top portion 82 a of the raised surface 82. The region Te <b> 3 of the high level surface 83 is set in a range from the top portion 82 a of the raised surface 82 to the retaining portion 58.

  18 (a) and 18 (b) show that the slider 61A is positioned above the reference surface 81 of the slide rail portion 51A. When the trunk lid 14 (see FIG. 2) is fully closed, the lower end surface 61c of the slider 61A is at a stop position ST indicated by a solid line in FIG. The stop position ST corresponds to the fully closed position P21 shown in FIG. A lower end 81a of the reference surface 81 (a start point 81a of the raised surface 82) is adjacent to the stop position ST. That is, the raised surface 82 is adjacent to the stop position ST of the slider 61A when the trunk lid 14 is fully closed.

  From this state, the slider 61A slidably displaced downward on the reference surface 81 rides on the raised surface 82 as indicated by the imaginary line. This state is shown in FIG. FIG. 19A shows that the slider 61 </ b> A is located at a portion 82 b just before reaching the top portion 82 a of the raised surface 82. FIG. 19B shows a cross section taken along the line bb of FIG. Similar to the first embodiment (see FIG. 11C), the distance ds from the slide surface 61b of the slider 61A to the pair of folded portions 64, 64, that is, the size of the groove width ds of the pair of slide grooves 65, 65. Is set to be larger than the thickness T1 of the slide rail portion 51A (corresponding to the thickness tr of the first embodiment).

  Moreover, as shown in FIGS. 16A and 19A, the distance ds of the second embodiment is such that the slide surface 61b of the slider 61A slides relative to the slide surface 51c of the slide rail portion 51A. Thus, when climbing over the raised surface 82, the size is set such that the pair of folded portions 64, 64 of the slider 61A can temporarily contact the back surface 51b of the slide rail portion 51A. For this reason, when the slide surface 61b gets over the raised surface 82, the folded portions 64, 64 of the pair of arm portions 62, 62 are temporarily in contact with the back surface 51b of the slide rail portion 51A. Accordingly, the contact area temporarily increases, so that the frictional resistance can be temporarily increased.

  Further, as shown in FIGS. 19A and 19B, a portion of the slide surface 61b of the slider 61A where the other end 42 of the torsion bar 40L is connected (the torsion bar 40 is connected). The bar position 85 corresponding to the part) is a part immediately before reaching the top part 82a of the raised surface 82 when the pair of folded parts 64, 64 are temporarily in contact with the back surface 51b of the slide rail part 51A. It is set to be located at 82b. For this reason, the frictional resistance temporarily increases immediately before the slide surface 61b gets over the top portion 82a of the raised surface 82. Immediately after that, when the slide surface 61b gets over the top portion 82a of the raised surface 82, the folded portions 64, 64 of the pair of arm portions 62, 62 do not contact the back surface 51b of the slide rail portion 51A. Decrease again. As a result, the trunk lid 14 can be opened with a light force.

  20A and 20B show a state in which the slide surface 61b has climbed over the top portion 82a of the raised surface 82. FIG. The top surface 82a of the raised surface 82 is continuously provided with a high level surface 83 on which the slide surface 61b of the slider 61A can slide with the same height. The high-order surface 83 is parallel to the other portion 81 in the slide surface 51 c, that is, the reference surface 81. For this reason, after the slide surface 61b gets over the top portion 82a of the raised surface 82, the folded portions 64, 64 of the pair of arm portions 62, 62 maintain a state where they do not contact the back surface 51b of the slide rail portion 51A. Accordingly, since the state in which the frictional resistance is small is maintained, the trunk lid 14 can be opened to the full open state with a light operating force without fluctuation.

  Thereafter, when the fully opened trunk lid 14 starts to be closed, as shown in FIGS. 20 (a) and 20 (b), the folded portions 64 and 64 of the pair of arm portions 62 and 62 are provided on the back surface of the slide rail portion 51A. It is in the state which does not touch 51b. Therefore, since the state where the frictional resistance is small is maintained, the operation force when starting to close the trunk lid 14 can be reduced.

  Thereafter, immediately before the trunk lid 14 is fully closed (just before closing), as shown in FIGS. 18A and 18B, the folded portions 64 and 64 of the pair of arm portions 62 and 62 are provided. Are not in contact with the back surface 51b of the slide rail portion 51A. Therefore, since the state where the frictional resistance is small is maintained, the operation force when the trunk lid 14 is closed can be reduced. Moreover, since the closing load immediately before closing the trunk lid 14 with respect to the trunk opening 13 can be small, so-called closing property that can be surely closed is high.

  As described above, the slide surface 51c of the slide rail portion 51A is not uniform and is formed as a so-called cam surface having undulations. The slider 61A slides and is displaced while being guided by the undulation of the cam surface. Moreover, the frictional resistance between the slide surface 51c and the slide surface 61b of the slider 61A also changes. The opening / closing operation and the opening / closing load of the trunk lid 14 can be optimized.

  As shown in FIGS. 16 and 17A, the slide rail portion 51A has a pair of stoppers 55A and 55A. The pair of stoppers 55A and 55A is a portion for defining the lowest lower limit position P24 (see FIG. 4) at which the slider 61A can be lowered with respect to the slide rail portion 51A, and is formed integrally with the slide rail portion 51A. Yes. The stoppers 55A and 55A are constituted by a pair of locking projections. The pair of locking convex portions 55A and 55A (stoppers 55A and 55A) are formed in a convex shape having an arcuate cross section penetrating in the thickness direction of the slide rail portion 51A.

  On the other hand, the slider 61A is formed with a pair of concave engaging portions 79A, 79A that can be engaged with the pair of engaging convex portions 55A, 55A. The pair of locking portions 79A and 79A are recessed on the inner surfaces of the pair of extending portions 63 and 63 so as to be opposed to each other, and are formed into grooves having an arcuate cross section elongated in the extending direction of the extending portions 63 and 63. Has been.

  FIG. 17B is a view of the state in which the slider 61A is positioned below the slide rail portion 51A and stopped by the pair of stoppers 55A and 55A, as viewed from the back side. The slider 61A indicated by the imaginary line corresponds to the stop position indicated by the solid line in FIG. The slider 61A indicated by an imaginary line in FIG. 17B is guided by the slide rail portion 51A and slides downward. As a result, as indicated by a solid line in FIG. 17B, the lower end surface 61c of the slider 61A contacts the stoppers 55A and 55A. For this reason, the slider 61A is restricted from further lowering with respect to the slide rail portion 51A.

  Thus, the slide rail portion 51A has the stoppers 55A and 55A for defining the lowest limit position P24 at which the slider 61A can descend. The positions of the pair of stoppers 55A and 55A correspond to the lowest limit position P24 shown in FIG. That is, the slider 61A descends according to the swing motion of the arm base end portion 32, but is held on the lowermost limit position P24 by the stoppers 55A and 55A. For this reason, the assembling property of the slide rail portion 51A, the slider 61, and the other end portion 42 of the torsion bar 40L can be further enhanced.

  FIG. 17C shows a state in which the pair of locking portions 79A and 79A are locked to the pair of locking projections 55A and 55A when the slider 61A is positioned at the lowermost portion of the slide rail portion 51A. Yes. The slider 61A can be held on the slide rail portion 51A by locking the locking portions 79A and 79A to the locking convex portions 55A and 55A. For this reason, after the slider 61A is temporarily assembled on the slide rail portion 51A, the slider 61A can be transported to the next process, so the transportability is improved.

  According to the second embodiment, the same operations and effects as those of the first embodiment are exhibited. Further, in the second embodiment, the slide rail portion 51A has a friction force increasing portion 82 having a large friction force with the slider 61A in a part of the slidable region Tet of the slider 61A. For this reason, when the slider 61A slides the frictional force increasing portion 82 in the slidable region Tet, the sliding frictional force (sliding frictional force at the increased portion) between the slide rail portion 51A and the slider 61A is It is larger than the sliding frictional force (sliding frictional force of the general part) when the slider 61A slides on the other part 81.

  Since only the frictional force increasing portion 82 is provided on the slide rail portion 51A, the frictional force increasing portion 82 can be easily set as appropriate so that the sliding frictional force at the increased portion exceeds the urging force of the torsion bar 40L. For example, the size, shape, surface roughness, and presence or absence of protrusions of the frictional force increasing portion 82 can be easily set. In addition, the configuration of the frictional force increasing portion 82 is simple, and it is not necessary to provide a separate component from the slide rail portion 51A, and the cost does not increase.

  By simply making the sliding frictional force of the increased portion exceed the sliding load due to the urging force of the torsion bar 40L, the hinge arm 31 and the trunk lid 14 (opening / closing body 14) during the opening / closing movement can be artificially opened to an arbitrary degree. Can be paused. Further, as the sliding frictional force at the increased portion exceeds the sliding load due to the urging force of the torsion bar 40L, as shown in FIG. 21, the trunk lid 14 is fully opened at the beginning of opening (14A of the imaginary line). ), So-called pop-up can be suppressed, and an intermediate opening (position 14B of the imaginary line) can be achieved. Moreover, it is not necessary to provide a separate member for suppressing pop-up.

  Further, the frictional force increasing portion 82 is configured by a raised surface 82 in which a part of the slide surface 51c of the slide rail portion 51A is raised in the opposite direction to the urging direction of the torsion bar 40L. The sliding surface 61b of the slider 61A rides on the raised surface 82 against the urging force of the torsion bar 40L, whereby the sliding frictional force increases. The frictional force increasing portion 82 can be configured with a simple configuration.

  Further, the pair of slide grooves 65, 65 are slidably fitted to the edge portions 51a, 51a on both sides of the slide rail portion 51A. For this reason, the slider 61A does not slip out in the front-back direction with respect to the substantially flat slide rail portion 51A, that is, in the biasing direction Rt (see FIG. 4) or the counter-biasing direction of the torsion bar 40L.

  Further, the groove width ds of the pair of slide grooves 65, 65, that is, the distance ds from the slide surface 61b of the slider to the pair of folded portions 64, 64 is set to be larger than the thickness T2 of the slide rail portion. Has been. Moreover, the slider 61A is always held in surface contact with the slide rail portion 51A in the urging direction Rt of the torsion bar 40L. For this reason, when the slide surface 61b of the slider 61A does not ride on the raised surface 82, the folded portions 64 and 64 of the pair of arm portions 62 and 62 do not contact the back surface 51b of the slide rail portion 51A. Accordingly, the frictional resistance can be suppressed because the contact area is small.

  Further, as shown in FIG. 18A, the raised surface 82 is adjacent to the stop position ST of the slider 31A when the trunk lid 14 (see FIG. 2) is fully closed. Therefore, for example, when the latch mechanism (not shown) of the trunk lid 14 is unlatched, the slider 61A is temporarily stopped by the raised surface 82 when the trunk lid 14 is slightly opened from the fully closed state. Can do. Since the slider 61A pauses, the trunk lid 14 also pauses. Therefore, unnecessary opening operation of the trunk lid 14 can be suppressed. For example, after the unlatching operation, in order to open the trunk lid 14, the trunk lid 14 is temporarily opened in a state in which an opening space is secured between the opening 13 and the trunk lid 14. Can be stopped.

  In the present invention, the frictional force increasing portion 82 according to the second embodiment is not limited to the configuration of the raised surface. For example, the surface to be slid 51c of the slide rail portion 51A is a uniform flat surface having no undulation with respect to the reference surface 81, and the surface roughness is changed by changing the surface roughness of the range Te2 corresponding to the raised surface 82. This part can be used as the frictional force increasing portion 82. Further, the frictional force increasing portion 82 can be provided with protrusions on both edges (side surfaces) in the sliding direction of the slide rail portion 51 </ b> A, and the protrusion can be used as the frictional force increasing portion 82.

  The opening / closing device 11, 11 </ b> A for the vehicle 10 according to the present invention is suitable for a device for opening / closing a trunk lid 14 for opening / closing a trunk opening 13 provided at a rear portion of a vehicle body 16.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11, 11A ... Opening / closing device, 13 ... Opening (trunk opening), 14 ... Opening / closing body (trunk lid), 16 ... Vehicle body, 20L, 20R ... Hinge mechanism, 21L, 21R ... Hinge bracket 31L, 31R ... Hinge arm, 32 ... Arm base end portion, 32a ... Front surface of arm base end portion (surface of hinge arm), 33 ... First mounting hole, 34 ... Second mounting hole, 40L, 40R ... Torsion bar , 41 ... one end of the torsion bar, 42 ... the other end of the torsion bar, 43 ... a pressing part (biasing force acting part), 50 ... a slide mechanism, 51 ... a slide rail part, 51a ... an edge, 51b ... a back surface, 51c ... sliding surface, 52 ... holding claw part, 53 ... clip part, 55A ... stopper (holding convex part), 61 ... slider, 61a ... edge, 61b ... sliding surface, 62 ... a 63, extending portion, 64, folded portion, 71, opening for bar connection (groove portion), 72, central portion (straight groove), 73, both end portions (taper groove), 79, 79A, locking portion, 81: Other portion (reference surface), 81a: Stopper portion, 82: Friction force increasing portion (raised surface), 83 ... Flat surface (higher surface), 84 ... Raised portion, 85 ... Bar position, ds ... Larger interval P1 ... swing center of arm base end part (swing center of hinge arm), P2 ... support center of torsion bar, P22 ... position of slider with respect to slide rail portion in a state where trunk lid is fully opened, P23 ... position of slider Lowermost position, P24 ... Slider lowering operation position, Ro ... Opening direction of opening / closing body (trunk lid), Rt ... Energizing direction of torsion bar, SL ... Slide direction of slider, ST ... Stop position tr ... slide rail portion thickness of, α ... play fee.

Claims (7)

An opening / closing body that opens and closes an opening formed in the vehicle body, a hinge arm that supports the opening / closing body on the vehicle body in a swingable manner, and a torsion bar that urges the hinge arm in the opening direction of the opening / closing body. In a vehicle opening / closing device,
A slide rail portion provided on the hinge arm;
A slider slidable on the sliding surface of the slide rail portion in the arm longitudinal direction of the hinge arm;
The sliding surface of the slider is held by the urging force of the torsion bar in a slidable contact state with the sliding surface of the slide rail portion,
The opening / closing device for an opening portion of a vehicle, wherein the slide rail portion has a frictional force increasing portion having a large frictional force with the slider in a part of a slidable region of the slider .   The frictional force increasing portion is configured such that a part of the sliding surface of the slide rail portion is formed by a raised surface that is raised in a direction opposite to a biasing direction of the torsion bar. The opening / closing device for an opening of a vehicle according to Item 1. The slide rail part is constituted by a substantially flat member,
The slider has a pair of arm portions formed in a substantially L shape so as to wrap the edges of the slide rail portion from the edges on both sides along the sliding direction of the slide surface,
The pair of arms are
A pair of extending portions extending from the slide surface of the slider through the vicinity of the edge of the slide rail portion to the back surface side of the slide rail portion;
A pair of folded portions extending from the front ends of the pair of extending portions in directions facing each other along the back surface of the slide rail portion;
The opening / closing opening for a vehicle according to claim 2, wherein a size of an interval between the slide surface of the slider and the pair of folded portions is set larger than a thickness of the slide rail portion. apparatus. The size of the interval is
When the slide surface of the slider slides over the raised surface with respect to the slide surface of the slide rail portion, the pair of folded portions of the slider are on the back surface of the slide rail portion. 4. The opening / closing device for an opening of a vehicle according to claim 3, wherein the opening / closing device is set to a size that allows temporary contact. The bar position corresponding to the portion where the torsion bar is connected in the slide surface of the slider is:
When the pair of folded portions are temporarily in contact with the back surface of the slide rail portion, the pair of folded portions are set so as to be positioned immediately before reaching the top of the raised surface. The opening / closing device for an opening of a vehicle according to claim 4. The top of the raised surface is continuous with a flat surface on which the slide surface of the slider can slide at the same height,
6. The opening / closing device for an opening of a vehicle according to claim 5, wherein the flat surface is parallel to a surface of the sliding surface other than the raised surface.   The opening / closing device for a vehicle opening according to any one of claims 2 to 6, wherein the raised surface is adjacent to a stop position of the slider when the opening / closing body is fully closed.

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