JP6187297B2 - Vehicle roof side structure - Google Patents

Description

  The present invention relates to a vehicle roof side structure.

  The following Patent Document 1 discloses a roof side structure using spot welding. Here, the four sheets of the roof panel, the side member outer, the center pillar reinforcement, and the side member inner are joined by spot welding in a state where they are overlapped.

JP 2009-220599 A

  However, in general, when spot welding is used in a vehicle plate material, the maximum number of plate materials to be joined at the same position in a superposed state is limited to three. For this reason, when joining four plate materials, it is necessary to form a notch part, a hole part, etc. in one of them, and to have three plate materials in the spot welded part. Thus, when a notch or a hole is formed in a plate material, the rigidity of the plate material is lowered.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle roof side structure that can join four or more plate members without lowering rigidity.

In order to solve the above-described problem, a vehicle roof side structure according to claim 1 includes a roof panel and an inner plate of a roof side rail that extends along the vehicle front-rear direction at an end of the roof panel in the vehicle width direction. A rail inner panel that constitutes an outer plate of the roof side rail, is arranged outside the rail inner panel in the vehicle width direction, and forms a closed cross section with the rail inner panel, and the roof side A side member outer panel disposed on the outer side of the rail in the vehicle width direction, and a pillar arrangement portion connected to the roof side rail and extending along the vehicle vertical direction extends along the vehicle width direction of the roof panel. A reinforcement gusset connecting the roof reinforcement and the upper part of the pillar, And Fupaneru, and the side member outer panel, said rail outer panel, and said rail inner panel, said a first laser weld the reinforcement gussets welded in the same position, the first laser welding of said closed-section portion A first closed cross-sectional structure formed between the rail inner panel and the reinforcement gusset outside the corner on the part side .

In the vehicle roof side structure according to claim 1, all five plate members of the roof panel, the side member outer panel, the rail outer panel, the rail inner panel, and the reinforcement gusset are formed by laser welding at the same position (first laser welding portion). Welded. Here, in laser welding (so-called LSW (laser screw welding), it is possible to weld four or more plate materials, so in the above-mentioned five plate materials, the laser is at the same position (first laser welded portion). In the present invention, since it is not necessary to form a notch or a hole in the laser welding portion in each plate material, all the plate materials can be welded in a state where rigidity is ensured. Furthermore, in the present invention, the first closed cross-section structure is formed between the rail inner panel and the reinforcement gusset outside the corner on the first laser welding portion side of the closed cross-section portion.

The vehicle roof side structure according to claim 2 includes a rail inner panel that constitutes an inner plate of a roof side rail that extends along a vehicle longitudinal direction at an end of the roof panel in the vehicle width direction, and the roof side rail. A rail outer panel which is disposed outside the rail inner panel in the vehicle width direction and forms a closed cross-section with the rail inner panel, and is connected to the roof side rail and extends along the vehicle vertical direction. An inner plate of the pillar is formed, the pillar inner panel is opposed to the rail inner panel, and an outer plate of the pillar is disposed outside the pillar inner panel in the vehicle width direction, and is opposed to the rail outer panel. A pillar outer panel, and a roof panel extending in a vehicle width direction of the roof panel at a location where the pillar is disposed. A reinforcement gusset connecting the reinforcement and the upper portion of the pillar, and the pillar outer panel, the rail outer panel, the pillar inner panel, the rail inner panel, and the rain gusset are the same. A second laser welded portion welded at a position, and a second closed cross-sectional structure formed at a corner on the second laser welded portion side in the closed cross-sectional portion between the rail inner panel and the pillar inner panel; have.

The vehicle roof side structure according to claim 2, in a roof side rail, thereby improving the rigidity by configuring the closed-section portion at the rail inner panel and the rail outer panel. Here, all the five plate members of the pillar outer panel, rail outer panel, pillar inner panel, rail inner panel, and reinforcement gusset are welded by laser welding at the same position ( second laser welding portion) . In laser welding, four or more plate materials can be welded. Therefore, the above five plate materials can be welded by laser welding at the same position ( second laser welded portion) . In the present invention, since it is not necessary to form a notch or a hole in the laser welded portion in each plate material, all the plate materials can be welded in a state where rigidity is ensured. Furthermore, in the present invention, a second closed cross-section structure is formed at a corner on the second laser welded portion side in the closed cross-section portion between the rail inner panel and the pillar inner panel.

A vehicle roof side structure according to a third aspect is the vehicle roof side structure according to the first or second aspect , wherein the inner end of the rail inner panel in the vehicle width direction is linear along the vehicle front-rear direction. Is formed.

In the vehicle roof side structure according to claim 3 , in the vehicle roof side structure according to claim 3 , since it is not necessary to form a notch portion so that the number of plate members is three in the welded portion in four or more plate members. A direction inner side edge part can be linearly formed along a vehicle front-back direction. For this reason, rigidity can be improved rather than the board | plate material in which the notch part was formed.

The vehicle roof side structure according to claim 4 is the vehicle roof side structure according to any one of claims 1 to 3 , wherein the vehicle roof side structure is connected to the roof side rail and extends along a vehicle vertical direction. The outer end portion in the vehicle width direction of the reinforcement gusset that connects the roof reinforcement extending along the vehicle width direction of the roof panel and the upper portion of the pillar at the pillar installation site is the vehicle of the rail inner panel. It extends to the outer end in the width direction.

In laser welding, four or more plate materials can be welded, and therefore the reinforcement gusset can be welded at the same position as the rail outer panel, pillar inner panel, and rail inner panel. For this reason, in the vehicle roof side structure according to the fourth aspect , the vehicle width direction outer end portion of the reinforcement gusset extends to the vehicle width direction outer end portion of the rail inner panel. Thereby, rigidity can be improved in a roof side rail.

As described above, the vehicle roof side structure according to claim 1 has an excellent effect that five plate members including the roof panel can be joined without lowering the rigidity.

The vehicle roof side structure according to claim 2 has an excellent effect that five plate members including the pillar can be joined without lowering the rigidity.

The vehicle roof side structure according to the third aspect has an excellent effect that the rigidity of the vehicle skeleton can be improved as compared with the case where the notch is formed.

The vehicle roof side structure according to claim 4 has an excellent effect that the rigidity can be improved and the external input can be efficiently transmitted in the roof side rail.

1 is a perspective view showing an upper part of a vehicle to which a vehicle roof side structure according to the present embodiment is applied. It is sectional drawing when a rocker is cut | disconnected along 2-2 line of FIG. It is the side view seen from the arrow A direction of FIG. It is a comparative example and is a cross-sectional view corresponding to FIG. It is a comparative example and is a cross-sectional view corresponding to FIG.

  A vehicle roof side structure according to an embodiment of the present invention will be described with reference to the drawings. The front side in the vehicle front-rear direction is indicated by an arrow FR, the outer side in the vehicle width direction is indicated by an arrow OUT, and the upper side in the vehicle vertical direction is indicated by an arrow UP. Moreover, in the following description, when using the front and rear direction and the up and down direction, unless otherwise specified, the front and rear direction of the vehicle and the up and down direction of the vehicle are shown.

(Configuration of vehicle roof side structure)
FIG. 1 is a perspective view of a vehicle upper portion 11 to which a vehicle roof side structure 10 (see FIG. 2) according to the present embodiment is applied. As shown in FIG. 1, a roof panel 12 formed of a metal such as a steel plate is provided on the vehicle upper portion 11, and the end of the roof panel 12 in the vehicle width direction is along the vehicle front-rear direction. Each extended roof side rail 14 is provided.

  A front header 16 is spanned along the vehicle width direction at the front end portions of the pair of roof side rails 14, and a rear header 18 is spanned along the vehicle width direction at the rear end portion. A front pillar 20 extends from the front end of the roof side rail 14 toward the vehicle front side and the lower side. A center pillar 22 extends downward from the center of the roof side rail 14 in the vehicle longitudinal direction. Further, a rear pillar 24 extends from the rear end of the roof side rail 14 toward the rear side and the lower side of the vehicle.

  A lower end portion of the front pillar 20, a lower end portion of the center pillar 22, and a lower end portion of the rear pillar 24 are respectively joined to a rocker (not shown) that extends along the vehicle front-rear direction. The rocker, the front pillar 20, the roof side rail 14, and the center pillar 22 form a substantially rectangular front side door opening 26 in a side view of the vehicle. Further, the rocker, the center pillar 22, the roof side rail 14, and the rear pillar 24 form a substantially rectangular rear side door opening 28 in a vehicle side view. The front side door opening 26 and the rear side door opening 28 are closed by a front side door and a rear side door (not shown), respectively, so that the cabin 30 and the vehicle exterior 32 side can be opened and closed.

  Further, a roof reinforcement 34 is provided along the vehicle width direction of the roof panel 12 at the location where the center pillar 22 is disposed. Reinforce gussets 36 made of a metal such as a steel plate are provided at both ends in the longitudinal direction of the roof reinforcement 34.

  As shown in FIG. 2, the reinforcement gusset 36 has a substantially inverted L-shaped cross section when cut along the vehicle vertical direction, and has an upper wall 36 </ b> A located on the inner side in the vehicle width direction. And a side wall 36B located on the outer side in the vehicle width direction. A plurality of fastening holes 38 are formed on the end side of the upper wall 36A (see FIG. 3), and the roof reinforcement 34 is fastened to the upper wall 36A via bolts 40 and weld nuts 42. A reinforcement gusset 36 to which the roof reinforcement 34 is fastened is coupled to the roof side rail 14 (described later).

  Here, the roof panel 12 has a substantially rectangular shape in plan view, and is formed so as to bulge in a convex shape toward the vehicle upper side. The roof panel 12 includes a main body portion 12A that forms a design portion that covers the cabin 30 from the upper side of the vehicle. From both ends of the main body portion 12A in the vehicle width direction, the outer flange faces outward in the vehicle width direction. 12B is extended, respectively.

  On the other hand, the roof side rail 14 includes a rail inner panel 44 that constitutes an inner plate of the roof side rail 14, and a rail outer panel 46 that is disposed outside the rail inner panel 44 in the vehicle width direction and constitutes an outer plate of the roof side rail 14. And.

  The rail inner panel 44 is formed of a metal such as a steel plate, and has a substantially hat shape in which a cross-sectional shape when cut along the vehicle vertical direction is opened outward in the vehicle width direction. The rail outer panel 46 is also formed of a metal such as a steel plate, and has a substantially hat shape in which the cross-sectional shape is opened inward in the vehicle width direction. A closed section 45 is configured by a main body portion 46 </ b> A that is a so-called general portion in the rail outer panel 46 and a main body portion 44 </ b> A that is a general portion in the rail inner panel 44.

  From the inner end in the vehicle width direction of the main body portion 46A of the rail outer panel 46, an inner flange portion 46B extends inward in the vehicle width direction, and from the outer end portion of the main body portion 46A in the vehicle width direction. The outer flange portion 46C extends downward and outward in the vehicle width direction.

  Further, an inner flange portion 44B extends inwardly in the vehicle width direction from the inner end portion in the vehicle width direction of the main body portion 44A of the rail inner panel 44, and the outer end of the main body portion 44A in the vehicle width direction. An outer flange portion 44C extends from the portion toward the lower side and the outside in the vehicle width direction. 3 is a side view seen from the direction of arrow A in FIG. 2, but as shown in FIG. 3, the inner end 44B1 of the inner flange portion 44B of the rail inner panel 44 is in the vehicle front-rear direction. It is formed linearly along the direction.

  As shown in FIG. 1, at the location where the center pillar 22 is disposed, as shown in FIG. 2, the reinforcement gusset 36 is disposed opposite to the inner side of the rail inner panel 44 in the vehicle width direction. . On the side wall 36B side of the upper wall 36A of the reinforcement gusset 36, a joint portion 48 that faces the inner flange portion 44B of the rail inner panel 44 is provided. Further, a joining portion 50 is provided on the side of the side wall 36B of the reinforcement gusset 36 so as to face the outer flange portion 44C of the rail inner panel 44. That is, the vehicle width direction outer side end portion 50 </ b> A of the reinforcement gusset 36 extends to the outer flange portion 44 </ b> C positioned at the vehicle width direction outer side end portion of the rail inner panel 44.

  A side outer panel 52 as a side member outer panel is disposed outside the rail outer panel 46 in the vehicle width direction. The side outer panel 52 is formed of a metal such as a steel plate, and has a substantially hat shape in which a cross-sectional shape when cut along the vehicle vertical direction is opened inward in the vehicle width direction.

  The side outer panel 52 includes a main body portion 52A that forms a design portion, and the main body portion 52A and the main body portion 46A of the rail outer panel 46 constitute a closed section 55. An inner flange 52B extends from the inner end in the vehicle width direction of the main body 52A of the side outer panel 52 toward the inner side in the vehicle width direction, and from the outer end in the vehicle width direction of the main body 52A. An outer flange 52C extends downward and outward in the vehicle width direction.

  On the other hand, the center pillar 22 includes a pillar inner panel 54 that constitutes an inner plate of the center pillar 22, and a pillar outer panel 56 that is disposed outside the pillar inner panel 54 in the vehicle width direction and constitutes an outer plate of the center pillar 22. I have.

  The pillar outer panel 56 is formed of a metal such as a steel plate, and is arranged outside the rail outer panel 46 in the vehicle width direction. The pillar outer panel 56 is also formed of a metal such as a steel plate. The pillar outer panel 56 is formed so as to face a part of the main body portion 46A of the rail outer panel 46, and includes a main body portion 56A having a substantially V shape with an inner side in the vehicle width direction opened. A joining portion 56B extends downward from the lower end portion of the main body portion 56A and toward the outside in the vehicle width direction.

  The pillar inner panel 54 is arranged outside the rail inner panel 44 in the vehicle width direction. The pillar inner panel 54 is formed so as to face a part of the main body portion 44A of the rail inner panel 44, and includes a main body portion 54A having a substantially V shape with an outer side in the vehicle width direction opened. From the lower end of the main body 54A, a joint 54B extends downward and outward in the vehicle width direction.

  With the configuration as described above, in the roof side rail 14, the outer flange 12 </ b> B of the roof panel 12, the inner flange 52 </ b> B of the side outer panel 52, and the inner flange portion 46 </ b> B of the rail outer panel 46 at the joint 58 with the reinforcement gusset 36. The inner flange portion 44B of the rail inner panel 44 and the joint portion 48 of the reinforcement gusset 36 are all set to overlap each other. In the present embodiment, these five plate materials are all welded by laser welding at the same position (laser welding portion 60).

  As shown in FIG. 1, in the roof panel 12 where the roof reinforcement 34 is not provided, the reinforcement gusset 36 is not joined to the roof side rail 14. In this case, four plate members of the outer flange 12B of the roof panel 12, the inner flange 52B of the side outer panel 52, the inner flange portion 46B of the rail outer panel 46, and the inner flange portion 44B of the rail inner panel 44 are welded by laser welding. (Laser weld 61 shown in FIG. 3).

  Further, in the roof side rail 14, at the joint portion 62 with the center pillar 22, a joint portion 56B of the pillar outer panel 56, an outer flange portion 46C of the rail outer panel 46, a joint portion 54B of the pillar inner panel 54, and a rail inner panel. The outer flange portion 44C of 44 and the joint portion 50 of the reinforcement gusset 36 are all set to overlap each other. In the present embodiment, these five plate materials are all welded at the same position by laser welding (laser welding portion 64).

  The above laser welding is, for example, LSW (laser screw welding).

(Operation and effect of vehicle roof side structure)
Next, functions and effects of the vehicle roof side structure will be described.

  As described above, in the present embodiment, as shown in FIG. 2, in the roof side rail 14, the outer flange 12 </ b> B of the roof panel 12 and the inner flange 52 </ b> B of the side outer panel 52 at the joint 58 with the reinforcement gusset 36. The inner flange portion 46B of the rail outer panel 46, the inner flange portion 44B of the rail inner panel 44, the joint portion 48 of the reinforcement gusset 36, and the five plate members are all welded by laser welding at the same position (laser welding). Part 60).

  Note that, in the roof panel 12 where the roof reinforcement 34 is not provided, the outer flange 12B of the roof panel 12, the inner flange 52B of the side outer panel 52, the inner flange portion 46B of the rail outer panel 46, and the rail inner panel 44 are provided. The flange portion 44B and the above four plate materials are all welded at the same position by laser welding (laser welding portion 61 shown in FIG. 3).

  Further, in the roof side rail 14, at the joint portion 62 with the center pillar 22, the joint portion 56 </ b> B of the pillar outer panel 56, the outer flange portion 46 </ b> C of the rail outer panel 46, the joint portion 54 </ b> B of the pillar inner panel 54, and the rail inner panel 44. The flange portion 44C and the joint portion 50 of the reinforcement gusset 36, and the above five plate materials are all welded by laser welding at the same position (laser welding portion 64).

  Since LSW can weld four or more plates, for example, the outer flange 12B of the roof panel 12, the inner flange 52B of the side outer panel 52, the inner flange portion 46B of the rail outer panel 46, and the inner flange of the rail inner panel 44. It is not necessary to form a notch or a hole in the coupling portion 58 of the portion 44B. Therefore, in these plate materials, all the plate materials can be joined at the same position in a state where rigidity is ensured.

  Thereby, the rigidity of the roof side rail 14 can be improved, and when an impact load is input to the front portion of the vehicle, the collision load is reliably transmitted toward the rear side in the vehicle front-rear direction via the roof side rail 14. Can communicate. When an impact load is input to the side of the vehicle, the collision load can be transmitted in the vehicle width direction through the roof reinforcement 34 via the center pillar 22 and the reinforcement gusset 36.

  Further, in LSW, since four or more plate materials can be welded, productivity is improved. Furthermore, in the welding technique using LSW, the interval between the welding points can be shortened as compared with the spot welding technique. For this reason, it is possible to centrally arrange the hitting points between the panels at the portions to be joined. Thereby, in a vehicle roof side structure, rigidity can further be improved and the steering stability of the vehicle 13 (refer FIG. 1) can be improved.

  In general, in the case of spot welding, the limit is up to three in terms of welding quality. Therefore, as shown in FIGS. 4 and 5, in the roof side rail 100, the joint portion 104 to which the reinforcement gusset 102 is joined. Then, only the inner flange 106A of the side outer panel 106, the inner flange portion 108A of the rail outer panel 108, the joint portion 102A of the reinforcement gusset 102, and the above three plate members can be welded at the same position (spot welded portion 110). For this reason, the rail inner panel 112 has a notch 112A.

  On the other hand, in this invention, it is not necessary to form the notch part for making the plate | board material into three sheets in a welding part in four or more board | plate materials. For this reason, in this embodiment, as shown in FIG. 3, the vehicle width direction inner side end portion 44B1 of the inner flange portion 44B of the rail inner panel 44 can be formed linearly along the vehicle front-rear direction. Thereby, the rigidity of the vehicle skeleton can be improved as compared with the case where the notch portion is formed in the rail inner panel 44.

  Further, as described above, in the case of spot welding, the limit is three, so as shown in FIG. 4, at the joint 116 between the roof side rail 100 and the center pillar 114, the joint 118 </ b> A of the pillar outer panel 118. And the outer flange portion 108B of the rail outer panel 108 are spot welded (spot welded portion 120), and the joint portion 122A of the pillar inner panel 122 and the outer flange portion 112B of the rail inner panel 112 are spot welded (spot welded portion). 124).

  In this case, a gap 126 is provided between the outer flange portion 108B of the rail outer panel 108 and the joint portion 122A of the pillar inner panel 122 to prevent abnormal noise. For this reason, there is a restriction on the design.

  On the other hand, in the present invention, four or more plates can be welded. Therefore, as shown in FIG. 2, the reinforcement gusset 36 is connected to the pillar outer panel 56, the rail outer panel 46, the pillar inner panel 54, and the rail inner. It can be welded at the same position as the panel 44. Thereby, in the roof side rail 14, rigidity can be improved.

  In the present embodiment, since four or more plates can be welded, the outer end in the vehicle width direction of the joint portion 50 of the reinforcement gusset 36 is the outer side in the vehicle width direction of the outer flange portion 44C of the rail inner panel 44. It extends to the end. Thereby, in the roof side rail 14, rigidity can further be improved. In this way, the reinforcement gusset 36 is welded at the same position as the pillar outer panel 56, the rail outer panel 46, the pillar inner panel 54, and the rail inner panel 44, so that it is not necessary to provide the gap 126 shown in FIG. There is no need to be constrained.

(Other embodiments)
In the present embodiment, as shown in FIG. 2, the outer flange 52 </ b> C of the side outer panel 52 is not joined in the laser welded portion 64 in the joint portion 62 with the center pillar 22 in the roof side rail 14. Of course, the outer flange 52C may be joined together with other plate materials.

  Further, in the present embodiment, in the roof side rail 14, the connecting portion 58 with the reinforcement gusset 36 and the connecting portion 62 with the center pillar 22 have been described, but laser welding is possible at a portion where four or more plate materials overlap. Therefore, it can be applied to other parts. Of course, the present invention can also be applied to a portion where three plate materials overlap.

  Further, in the present embodiment, the description has been made on the connecting portion 62 between the roof side rail 14 and the center pillar 22 shown in FIG. 1, but the embodiment may be applied to the connecting portion between the roof side rail 14 and the front pillar 20 or the rear pillar 24. Of course.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 Vehicle roof side structure 11 Vehicle upper part 12 Roof panel 13 Vehicle 14 Roof side rail 20 Front pillar (pillar)
22 Center pillar (pillar)
24 Rear pillar (pillar)
34 Roof reinforcement 36 Reinforce gusset 44 Rail inner panel (roof side rail)
44B1 Vehicle width direction inner side edge part (Vehicle width direction inner edge part in a rail inner panel)
45 Closed section 46 Rail outer panel (roof side rail)
50A Vehicle width direction outer side end (vehicle width direction outer side end portion in the rain force gusset)
52 Side outer panel (Side member outer panel)
54 Pillar inner panel (pillar)
56 Pillar outer panel (pillar)
60 Laser welded part 61 Laser welded part 64 Laser welded part

Claims (4)

A roof panel,
A rail inner panel that constitutes an inner plate of a roof side rail that extends along the vehicle longitudinal direction at an end of the roof panel in the vehicle width direction;
A rail outer panel that forms an outer plate of the roof side rail and is disposed outside the rail inner panel in the vehicle width direction, and forms a closed cross-section with the rail inner panel;
A side member outer panel disposed outside the roof side rail in the vehicle width direction;
A rain that connects the roof reinforcement that extends along the vehicle width direction of the roof panel and the upper portion of the pillar at a portion where the pillar is connected to the roof side rail and extends along the vehicle vertical direction. Force gusset,
With
A first laser welded portion in which the roof panel, the side member outer panel, the rail outer panel, the rail inner panel, and the reinforcement gusset are welded at the same position;
A first closed cross-section structure formed between the rail inner panel and the reinforcement gusset outside the corner of the closed cross-section on the first laser welded portion side;
A vehicle roof side structure. A rail inner panel that constitutes an inner plate of a roof side rail that extends along the vehicle longitudinal direction at the vehicle width direction end of the roof panel;
A rail outer panel that constitutes the outer plate of the roof side rail and is disposed outside the rail inner panel in the vehicle width direction, and forms a closed cross-section with the rail inner panel;
A pillar inner panel that is connected to the roof side rail and that extends along the vehicle vertical direction constitutes a pillar inner panel that faces the rail inner panel;
A pillar outer panel that constitutes an outer plate of the pillar and is disposed on the outer side in the vehicle width direction of the pillar inner panel, facing the rail outer panel;
Reinforcement gusset that connects the roof reinforcement extending along the vehicle width direction of the roof panel and the upper part of the pillar at the location where the pillar is disposed,
With
A second laser welded portion in which the pillar outer panel, the rail outer panel, the pillar inner panel, the rail inner panel, and the reinforcement gusset are welded at the same position;
A second closed cross-section structure formed at a corner on the second laser welded portion side in the closed cross-section portion between the rail inner panel and the pillar inner panel;
A vehicle roof side structure.   3. The vehicle roof side structure according to claim 1, wherein an inner end portion in the vehicle width direction of the rail inner panel is formed linearly along a vehicle front-rear direction.   A rain that connects the roof reinforcement that extends along the vehicle width direction of the roof panel and the upper portion of the pillar at a portion where the pillar is connected to the roof side rail and extends along the vehicle vertical direction. The vehicle roof side structure according to any one of claims 1 to 3, wherein an outer end portion in the vehicle width direction of the force gusset extends to an outer end portion in the vehicle width direction of the rail inner panel.

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