JP6430884B2 - Support unit and vehicle sun visor including the support unit - Google Patents

Description

  The present invention relates to a support unit through which a shaft is inserted, and a vehicle sun visor including the support unit.

  A sun visor is provided on the ceiling surface in front of the driver's seat and passenger seat of the vehicle to protect the eyes of the driver from direct sunlight and to ensure visibility. The sun visor is provided so that its position can be adjusted according to the position of the sun.

  Patent Document 1 discloses a vehicle sun visor including a sun visor body for blocking light, a support arm for supporting the sun visor body, and a clip formed by bending a metal plate. On one inner wall surface of the two shells constituting the sun visor body, a bearing portion for supporting the support arm and a clip support portion having a clip mounting hole are formed. The support arm and the clip are attached to the sun visor body by inserting the support arm into the bearing portion and inserting both ends of the clip sandwiching the support arm into the clip support portion.

JP 2002-347439 A

  By the way, since the vehicle sun visor is used by being moved to a desired position by the user, a support unit that exhibits sufficient torque to support the shield so as to suppress the sag of the shield at that position and maintain the posture. It is desired. In the technology disclosed in Patent Document 1, since the clip support portion is formed integrally with the shell, the clip support portion may be bent together with the shell when a load is applied, and there is a possibility that appropriate torque cannot be generated. There is.

  This invention is made | formed in view of such a subject, The objective is to provide the support unit and vehicle sun visor which can transmit sufficient torque to the shield of the vehicle sun visor.

  In order to solve the above-described problems, an aspect of the present invention is a support unit that is provided between a shield and a shaft in a vehicle sun visor and is accommodated in an accommodation space of the shield, and the shaft is inserted therethrough. A bearing portion, a wall portion that is connected to the bearing portion and extends in the axial direction, and is formed on an axial side surface of the wall portion, and can be bent so as to advance and retreat in the axial direction on the claw portion formed on the distal end side. An elastic nail body. The elastic claw body engages with the overhanging portion of the shielding body when the shielding body has an overhanging portion formed so as to project into the accommodation space.

  Another aspect of the present invention is a vehicle sun visor. The vehicle sun visor includes a shielding body for blocking light, a shaft that supports the shielding body, and a support unit that is connected to the shaft and supports the shielding body. The support unit includes a bearing portion through which the shaft is inserted, a wall portion that is connected to the bearing portion and extends in the axial direction, and a claw portion that is formed on the side surface in the axial direction of the wall portion and formed on the tip side. And an elastic claw body that can be bent so as to advance and retreat in the direction. The shield includes a storage space for storing the support unit, and an overhang portion that projects from the inner surface of the storage space. The elastic claw body is locked to the overhanging portion.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which the support unit of a vehicle sun visor can transmit sufficient torque to a shield can be provided.

It is a figure for demonstrating a sun visor. It is a figure for demonstrating the internal structure of the sun visor which has a sliding type shield. It is sectional drawing of line segment AA of the sun visor shown in FIG.2 (b). It is a figure for demonstrating the internal structure of the sun visor which has the shield which does not slide. It is a fragmentary perspective view of the 1st plate-shaped member of a non-sliding type shield. It is a fragmentary perspective view of the 2nd plate-shaped member of a non-sliding type shield. FIG. 7A and FIG. 7B are perspective views of the support unit. FIG. 8A is a front view of the support unit, FIG. 8B is a plan view of the support unit, and FIG. 8C is a side view of the support unit. It is sectional drawing of line segment BB of the sun visor shown in FIG. It is sectional drawing of the sun visor of the position of line segment CC shown in FIG.

  FIG. 1 is a diagram for explaining the sun visor 10. The sun visor 10 is fixed to the vehicle body panel on the ceiling of the driver's seat and the passenger seat of the vehicle, and is used for suppressing dazzling and dizziness caused by sunlight and oncoming vehicle lights. The sun visor 10 is slidably provided so that the position of the shield 16 can be adjusted.

  The sun visor 10 includes a fixed portion 12, a shaft 14, a shield 16, a spring member 18, and a support unit 20. The fixing portion 12 fixes the sun visor 10 so as to be rotatable with respect to the vehicle body. A part of the shaft 14 is inserted into the accommodating space 17 of the shield 16 and supports the shield 16. The shaft 14 is formed in a cylindrical shape and wired inside.

  The shield 16 is made of a resin and is configured by combining two plate-like members to block light. The shield 16 is provided with a light, a sensor, and the like and wired from the inside of the shaft 14. The shielding body 16 has an accommodation space 17 for accommodating the support unit 20 and the spring member 18 therein, and is slidable in the axial direction with respect to the shaft 14 and the support unit 20. The axial direction refers to the direction of the central axis of the shaft 14 inserted into the accommodation space 17 and is along the direction in which the shield 16 slides.

  The spring member 18 applies torque to the support unit 20 when the shield 16 is rotated. The spring member 18 is a plate spring that is formed by bending a metal plate so as to be folded back and is bent so as to surround the outer periphery of the shaft 14. The spring member 18 is fixed to the support unit 20 and holds the shaft 14 so as to sandwich the shaft 14. When the shield 16 is rotated with respect to the shaft 14, the spring member 18 and the support unit 20 are also rotated with respect to the shaft 14, and a torque for maintaining the rotational position is applied to the shield 16.

  The support unit 20 is made of resin and is connected to the shaft 14. The support unit 20 is provided between the shield and the shaft 14, is accommodated in the accommodation space 17, and supports the shield 16 on the shaft 14 so as to be rotatable and slidable. Further, the support unit 20 is buffered between the shaft 14 and the shield 16 to suppress backlash of the shield 16.

  The shield 16 is made of a softer and lighter resin material than the support unit 20 in order to improve safety and reduce costs. By forming the support unit 20 from a hard resin material, a sufficient reaction force can be applied to the metal spring member 18, and a sufficient torque can be generated even when the shield 16 is rotated. Thereby, even when a light, a mirror, or the like is provided on the shield 16 and the weight increases, sufficient torque can be applied to the shield 16 by the support unit 20 and the spring member 18. Further, the support unit 20 separate from the shield 16 has a high degree of design freedom and can adjust the transmission of torque to the shield 16 by a design change.

  FIG. 2 is a diagram for explaining the internal structure of the sun visor 10 having a sliding shield. FIG. 2A shows the sun visor 10 in a normal state, and FIG. 2B shows the sun visor 10 in a state in which the shield 16 is brought out by sliding. FIG. 3 is a cross-sectional view taken along line AA of the sun visor 10 shown in FIG. Although the 2nd plate-shaped member 16b is excluded in FIG.2 (b), in FIG. 3, the 2nd plate-shaped member 16b is shown. It should be noted that the same or equivalent components and members shown in the following drawings are denoted by the same reference numerals, and redundant description will be omitted as appropriate.

  As shown in FIG. 2A, only one of the two plate-like members of the shield 16 is shown, and a portion other than the portion of the first plate-like member 16a forming the accommodation space 17 is shown. Is omitted. The shaft 14 is inserted into the pair of bearing portions 30 of the support unit 20, and the spring member 18 sandwiches the shaft 14 between the pair of bearing portions 30.

  In the sun visor 10 in the normal state shown in FIG. 2A, most of the shaft 14 is accommodated in the accommodating space 17, and the support unit 20 is in contact with the first stopper portion 25. When the user pulls the shield 16, the shield 16 shown in FIG. In the state where the shield 16 is pulled out, the support unit 20 abuts against the second stopper portion 23 and the sliding in the pulling direction is restricted.

  The accommodation space 17 includes a first inner surface 24, a lower surface 22, a first stopper portion 25, a second stopper portion 23, and a second inner surface of a second plate member (not shown) of the first plate member 16a. And is defined by The second inner surface of the second plate-like member extends to face the first inner surface 24. The lower surface 22, the first stopper portion 25, and the second stopper portion 23 are formed so as to stand on the first inner surface 24. The upper portions of the first inner surface 24 and the second inner surface are curved and engaged so as to approach each other.

  The first stopper portion 25 and the second stopper portion 23 limit the movement of the support unit 20 in the axial direction. As shown in FIG. 2A, an engagement hole 23 a is formed in the second stopper portion 23, and an engagement hole (not shown) is also formed in the first stopper portion 25. These engagement holes engage with the protrusions 32 of the support unit 20 at positions where the slide is restricted. As shown in FIG. 3, the protrusion 32 is inserted into the engagement hole 23 a, and the movement of the support unit 20 is restricted by the second stopper portion 23. By engaging the protrusion 32 of the support unit 20 with the engagement hole, the shading of the shield 16 can be suppressed.

  The support unit 20 has elastic claws 44 on both side surfaces in the axial direction. The elastic claw body 44 is used for locking to the non-sliding shielding body instead of the sliding shielding body 16.

  FIG. 4 is a view for explaining the internal structure of the sun visor 100 having the shield 116 that does not slide. The support unit 20 and the spring member 18 of the embodiment are fixed not only to the slidable shield 16 shown in FIG. 2A but also to the non-slidable shield 116 shown in FIG.

  The shield 116 shown in FIG. 4 differs from the shield 16 shown in FIG. 2A in that it has a pair of overhang portions 26, and the support unit 20 is arranged between the pair of overhang portions 26. Thus, the elastic claw body 44 is engaged with the overhanging portion 26 and restricts the movement of the support unit 20 in the axial direction. In the axial restriction by the pair of overhanging portions 26, there is a possibility that the shielding body 16 may rattle, so that the elastic claws 44 of the support unit 20 are brought into elastic contact with the overhanging portion 26 to suppress backlash.

  FIG. 5 is a partial perspective view of the first plate-like member 116a of the non-sliding shield 116. FIG. The first plate-like member 116 a of the shield 116 has a pair of protruding portions 26 that protrude from the first inner side surface 24 and face each other. The overhang portion 26 protrudes parallel to the lower surface 22.

  Each of the overhang portions 26 has a groove portion 26a that is recessed on the opposite surface, and the elastic claw body 44 of the support unit 20 is locked in the groove portion 26a. The groove part 26 a has an upper edge 26 b on the central axis side of the shaft 14 and a side edge 26 c on the protruding end side of the overhang part 26.

  FIG. 6 is a partial perspective view of the second plate-like member 116b of the non-sliding shield 116. FIG. The second plate-like member 116 b has a pair of columnar portions 62 that protrude from the second inner side surface 60. The pair of columnar portions 62 are inserted into the insertion holes formed in the support unit 20 between the pair of overhang portions 26.

  FIG. 7A and FIG. 7B are perspective views of the support unit 20. 8A is a front view of the support unit 20, FIG. 8B is a plan view of the support unit 20, and FIG. 8C is a side view of the support unit 20.

  The support unit 20 includes a pair of bearing portions 30, a pair of protrusions 32, a wall portion 34, a mounting portion 36, a pair of abutting portions 40, a pair of first elastic contact portions 42, and a pair of second contacts. It has an elastic contact portion 38, a pair of elastic claws 44, and a pair of insertion holes 46.

  The pair of bearing portions 30 are formed in a cylindrical shape, are spaced apart in the axial direction, and have coaxial through holes. A space for accommodating the spring member 18 is provided between the pair of bearing portions 30. The wall portion 34 is connected to the pair of bearing portions 30 and extends in the axial direction, and functions as a connection portion that connects the pair of bearing portions 30. The wall part 34 has the 1st wall surface 35a and the 2nd wall surface 35b which are parallel.

  The attachment portion 36 is formed in a hole shape between the pair of bearing portions 30 in the axial direction, and a part of the spring member 18 is inserted therein. The spring member 18 is hooked on the mounting recess 36a shown in FIG.

  The pair of protrusions 32 are formed to protrude outward in the axial direction from the axial side surface 37, respectively, and are located on the radial front end side of the axial side surface 37. When the support unit 20 is slidable within the accommodating space 17 of the shield 16, the protrusion 32 engages with the shield 16 at a position where sliding is restricted by the first stopper portion 25 and the second stopper portion 23. It is inserted into the hole and engaged.

  As shown in FIG. 7A, the pair of first elastic contact portions 42 is formed on the first wall surface 35a of the wall portion 34 and is spaced apart in the axial direction. The first elastic contact portion 42 can be bent in the direction perpendicular to the first wall surface 35a, and elastically contacts the second plate member of the shield 16 in the assembled state.

  As shown in FIG. 7B, the pair of second elastic contact portions 38 are formed on the second wall surface 35b of the wall portion 34 and are spaced apart in the axial direction. The second elastic contact portion 38 can be bent in the direction perpendicular to the second wall surface 35b, and elastically contacts the first plate-like member 16a of the shield 16 in the assembled state. The first elastic contact portion 42 and the second elastic contact portion 38 can suppress backlash in the thickness direction of the wall portion 34. The thickness direction of the wall portion 34 is the same as the direction in which the first inner side surface 24 of the first plate-like member 16a and the second inner side surface of the second plate-like member face each other, and the first wall surface 35a or the second wall surface. This is the direction perpendicular to the surface 35b.

  As shown in FIG. 7B, the pair of abutting portions 40 are formed to protrude from the second wall surface 35b, abut against the first inner surface 24 of the first plate-like member 16a, and the first inner surface 24 when sliding. It functions as a sliding guide. A pair of contact part 40 is located in the both ends side of an axial direction. The first inner side surface 24 may be formed with a step portion that engages with the abutting portion 40 and extends in the axial direction.

  The elastic claw body 44 includes a base portion 45 that extends in the radial direction with respect to the central axis of the bearing portion 30, and a claw portion 47 that protrudes outward in the axial direction on the distal end side of the base portion 45. The base portion 45 extends along the direction toward the central axis of the bearing portion 30, extends along the axial side surface 37, and is formed flat with the axial side surface 37. The claw portion 47 protrudes outward in the axial direction from the axial side surface 37.

  The claw portion 47 is formed on the first tapered surface 48 formed on the tip surface of the claw portion 47 shown in FIG. 8A and the side surface on the second wall surface 35b side of the claw portion 47 shown in FIG. A second taper surface 50 and a retaining surface 52 formed on the side surface of the claw portion 47 on the first wall surface 35a side. The first taper surface 48 is connected to the tip end portions of the second taper surface 50 and the retaining surface 52 and extends along the thickness direction of the wall portion 34.

  The first tapered surface 48 is engaged with the upper edge 26 b of the overhang portion 26 of the shield 116. The second tapered surface 50 functions as an insertion guide when the claw portion 47 enters the groove portion 26 a of the overhang portion 26. The retaining surface 52 functions as a retaining member facing the side edge 26c of the groove 26a after the claw portion 47 enters the groove 26a.

  As shown in FIG. 8C, the elastic claw body 44 is formed in a substantially L shape, and the claw portion 47 is formed wider than the base portion 45. Thereby, the base 45 can be easily bent while ensuring a sufficient width for the first tapered surface 48 to be engaged with the groove 26 a of the overhang 26.

  As shown in FIG. 8A, the claw portion 47 is located on the center axis side of the bearing portion 30 with respect to the projection portion 32, and the projection portion 32 is located on the radial front end side with respect to the claw portion 47. As a result, as shown in FIG. 4, the protruding portion 32 is disposed between the projecting portion 26 and the lower surface 22, and when the elastic claw 44 is bent due to an excessive load applied to the shielding body 16, the protruding portion 32. Can be caught by the overhanging portion 26 and receive a radial load. The protruding portion 32 is formed on the second wall surface 35 b side in the thickness direction of the wall portion 34.

  The insertion hole 46 is formed in the first wall surface 35a, and a columnar portion (not shown) formed in the shield 116 is inserted therein. The insertion hole 46 extends to the back side of the elastic claw body 44 and communicates with a space for the elastic claw body 44 to bend. A claw portion 47 protrudes on the front side of the elastic claw body 44. When the columnar portion formed on the shield 116 is inserted into the insertion hole 46, the bending of the elastic claw body 44 is limited.

  The pair of ribs 54 are formed on the lower end surface of the wall portion 34 located on the distal end side in the radial direction when viewed from the central axis of the bearing portion 30. The rib 54 is formed so as to be raised, and is urged by the elastic claw body 44 to contact the lower surface 22.

  A process of attaching the support unit 20 to the shield 116 will be described. The support unit 20 is pushed into the first plate-like member 116 a shown in FIG. 4 in the direction perpendicular to the first inner side surface 24, and the second tapered surface 50 of the elastic claw body 44 contacts the tip of the overhanging portion 26. Touch. When the second taper surface 50 is pressed against the overhanging portion 26, the elastic claw body 44 is bent so as to retract, and the support unit 20 can advance toward the first inner surface 24. When the support unit 20 hits the first inner side surface 24 and the elastic claw body 44 is restored while the elastic claw body 44 is retracted, the claw part 47 enters the groove 26a. Thus, in the attaching step, the elastic claw body 44 is bent by the second taper surface 50, so that the elastic claw body 44 can be attached to the projecting portion 26 only by pushing in the support unit 20. Further, the support unit 20 can be temporarily held on the first plate-like member 116a.

  FIG. 9 is a cross-sectional view taken along line BB of the sun visor 100 shown in FIG. When the elastic claw body 44 enters the groove 26a, the first taper surface 48 comes into elastic contact with the upper edge 26b and urges the support unit 20 in the radial direction of the central axis. Can be suppressed. Further, the first tapered surface 48 is locked to the upper edge 26b, so that the backlash in the axial direction of the support unit 20 can be suppressed. Further, the backlash of the support unit 20 in the thickness direction, that is, the direction perpendicular to the first inner side surface 24 can be suppressed by the first elastic contact portion 42 and the second elastic contact portion 38. Thereby, the shakiness of the shield 116 in three directions can be suppressed.

  As described above, the support unit 20 can be attached to the shielding body 116 with the backlash being prevented by rattling the elastic claw body 44 to the projecting portion 26 with respect to the non-sliding shielding body 116. Further, as shown in FIGS. 2A and 2B, when the support unit 20 is attached to the slidable shield 16, the protruding portion 32 is an engagement hole of the shield 16 at the slide restricting position. The backlash can be suppressed by engaging with. The cost can be reduced by sharing the support unit 20 with the sliding sun visor 10 and the non-sliding sun visor 100.

  Further, the support unit 20, the spring member 18, and the shaft 14 can be assembled and transported together, and the assembly can be easily performed simply by pushing the support unit 20 into the accommodation space. Further, it is possible to check the torque generated in the support unit 20 in a state where the support unit 20 and the spring member 18 are assembled to the shaft 14, and compared with the case where the support unit 20 is integrated with the shield 16, torque management is possible. Becomes easier.

  FIG. 10 is a cross-sectional view of the sun visor 100 at the position of the line segment CC shown in FIG. 4 excludes the second plate-like member 116b, FIG. 10 shows the second plate-like member 116b. The shield 116 is configured by combining the first plate member 116a and the second plate member 116b, and the support unit 20 is disposed in the accommodation space between the first plate member 116a and the second plate member 116b. The

  The first wall surface 35a of the support unit 20 faces the second plate member 116b, and the first elastic contact portion 42 elastically contacts the second plate member 116b. The second wall surface 35b faces the first plate member 116a, and the second elastic contact portion 38 elastically contacts the first plate member 116a. The support unit 20 enters between the pair of overhanging portions 26 and is restricted from moving in the axial direction, and elastically engages the elastic claw body 44 with the overhanging portion 26 to suppress axial backlash. The length of the support unit 20 in the axial direction is set to be slightly smaller than the distance between the pair of overhanging portions 26 to facilitate pushing between the pair of overhanging portions 26. The retaining surface 52 of the claw portion 47 is opposed to the side edge 26c of the overhang portion 26 and is retained.

  A pair of columnar portions 62 are formed on the second inner side surface 60 of the second plate-like member 116b so as to stand upright in the direction perpendicular to the surface. As shown in FIGS. 9 and 10, the columnar portion 62 is inserted into the insertion hole 46 formed in the first wall surface 35a. The insertion hole 46 communicates with the bending space on the back side of the elastic claw body 44, and the columnar portion 62 extends to the back side of the elastic claw body 44. As a result, the columnar portion 62 is positioned on the back side of the elastic claw body 44, restricting the deflection of the elastic claw body 44 to a predetermined value or more, and the possibility that the locking of the elastic claw body 44 to the groove 26a is released can be reduced. . After the support unit 20 is locked to the projecting portion 26 of the first plate member 116 a, the columnar portion 62 of the second plate member 116 b is inserted into the insertion hole 46. Thereby, the elastic nail | claw body 44 can be bent at the time of the assembly | attachment of the support unit 20, and the bending of the elastic nail | claw body 44 can be restrict | limited after an assembly | attachment.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art. Examples may also be included within the scope of the present invention. Moreover, it is also possible to combine each modification.

  In the embodiment, the mode in which the pair of elastic claws 44 of the support unit 20 are locked to the pair of overhang portions 26 of the shield 116 is shown, but the present invention is not limited to this mode. For example, the elastic claw body 44 may be formed on one of the side surfaces in the axial direction, and one overhang portion 26 of the shield 116 may be formed. In this case, the first plate-like member 116 a is formed with a stopper portion that protrudes in the shape of a wall from the first inner side surface 24 in the axial direction of the overhang portion 26. The support unit 20 is disposed between the stopper portion and the overhang portion 26, and the elastic claw body 44 elastically contacts the overhang portion 26 to urge the support unit 20 toward the stopper portion, thereby suppressing rattling.

  DESCRIPTION OF SYMBOLS 10 Sun visor, 12 fixing | fixed part, 14 shaft, 16 shielding body, 16a 1st plate-shaped member, 17 accommodating space, 18 spring member, 20 support unit, 22 lower surface, 23 2nd stopper part, 23a engagement hole, 24 1st Inner side surface, 25 First stopper portion, 26 Overhang portion, 26a Groove portion, 26b Upper edge, 26c Side edge, 30 Bearing portion, 32 Projection portion, 34 Wall portion, 35a First wall surface, 35b Second wall surface, 36 Mounting portion 36a mounting recess, 37 axial side surface, 38 second elastic contact portion, 40 contact portion, 42 first elastic contact portion, 44 elastic claw body, 45 base portion, 46 insertion hole, 47 claw portion, 48 first taper surface, 50 second taper surface, 52 retaining surface, 54 rib, 60 second inner surface, 62 columnar section, 100 sun visor, 116 Shielding body, 116a first plate member, 116b second plate member.

Claims (7)

A support unit that is provided between a shield and a shaft in a vehicle sun visor and is housed in a housing space of the shield,
A bearing portion through which the shaft is inserted;
A wall portion connected to the bearing portion and extending in the axial direction;
An elastic nail body formed on the side surface in the axial direction of the wall portion and capable of bending so as to advance and retract the claw portion formed on the tip side in the axial direction;
The support unit, wherein the elastic claw body is engaged with an overhanging portion of the shielding body when the shielding body has an overhanging portion formed so as to project into the accommodation space. The wall has a pair of protrusions formed so as to protrude from both side surfaces in the axial direction,
2. The protrusion according to claim 1, wherein when the support unit is slidable within a housing space of the shield, the protrusion is engaged with an engagement hole of the shield at a slide restricting position. Support unit. The elastic nail body is
The claw portion protruding in the axial direction is formed on the distal end side, and a base portion extending along a direction toward the central axis of the bearing portion;
The support unit according to claim 1, further comprising: a first tapered surface that is formed on a distal end side of the claw portion and is engaged with an overhang portion of the shield. The nail portion is
A second tapered surface formed on one of the side surfaces in the width direction of the claw portion;
A retaining surface formed on the other side surface of the claw portion in the width direction,
The claw portion is inserted into a groove portion formed in the projecting portion of the shielding body using the second tapered surface as an insertion guide, and is prevented from being detached from the groove portion by the retaining surface and attached to the shielding body, The support unit according to claim 3, wherein the first taper surface is elastically brought into contact with an edge of the groove portion and locked.   The support unit according to claim 3 or 4, wherein the claw portion is formed wider than the base portion. The wall portion is recessed in the thickness direction, and has an insertion hole communicating with the space on the back side of the elastic claw body,
The support unit according to any one of claims 1 to 5, wherein a columnar portion formed on a shield is inserted into the insertion hole, whereby bending of the elastic claw body is limited. A shield to block light;
A shaft that supports the shield;
A support unit connected to the shaft and supporting the shield,
The support unit is
A bearing portion through which the shaft is inserted;
A wall portion connected to the bearing portion and extending in the axial direction;
An elastic claw body formed on the side surface in the axial direction of the wall portion and capable of bending so as to advance and retract the claw portion formed on the tip side in the axial direction;
The shield is
An accommodating space for accommodating the support unit;
A projecting portion that projects from the inner surface of the housing space,
The vehicle sun visor is characterized in that the elastic claw body is locked to the overhanging portion.

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