JP2011254997A - Assist mechanism of drawer member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a variation of assist power associated with the weight of a drawer member.SOLUTION: There is provided an assist mechanism 11 assisting at least either the drawing or pulling movement of a drawer 9 to a storage part 5. The assist mechanism includes: a guide rail 13 disposed at the storage part 5 and one side of the drawer 9 along a movement direction of the drawer 9; a guide roller 15 moving forward and backward following the guide rail 13 in accordance with the movement of the drawer 9 by being supported by the storage part 5 and the other side of the drawer member 9; and a coil spring 45 advancing and energizing the guide roller 15 to the guide rail 13 side. The guide rail 13 is arranged to at least one side of the movement direction of the drawer 9 and includes assist surfaces 35, 37 tilting backward to an edge side.

Description

  The present invention relates to a pull-out member assist mechanism that assists in pull-in and pull-out operations such as pulling out furniture.

  As a conventional assist mechanism, there is one applied to a refrigerator as in Patent Document 1, for example. The refrigerator includes a storage container as a drawer member that is supported so as to be able to be pulled out and retracted with respect to the interior of the refrigerator, and assists the retracting operation of the storage container with an assist mechanism.

  The assist mechanism includes an inclined portion at the rear end of the rail provided in the refrigerator and a roller that rolls on the rail in the refrigerator in the storage container. At the time of retracting the storage container, the storage container can be automatically retracted by rolling the roller along the inclined portion of the rail using the weight of the storage container and the weight of the storage object (weight of the storage container).

  As described above, the assist mechanism can assist the pull-in operation by automatic pull-in using the weight of the storage container.

  However, in such a conventional structure, when the weight of the storage container increases, the assist force increases accordingly. As a result, there is a possibility that the pulling operation in the counter-assist direction becomes difficult.

Japanese Utility Model Publication No. 5-41349

  The problem to be solved is that the assist force varies with the weight of the drawing member.

  The present invention relates to a pull-out member assist mechanism that assists at least one of the pull-out and pull-in operations of the pull-out member with respect to the storage portion in order to suppress fluctuations in the assist force due to the weight of the pull-out member. A guide portion provided on one side of the member along the operation direction of the drawing member, and supported on the other side of the storage portion and the drawing member, and moves forward and backward according to the operation of the drawing member. A guided portion; and a biasing member for advancing and biasing the guided portion toward the guide portion. The guide portion is provided at least on one side in the operation direction of the drawing member and is directed toward the end portion. The main feature is that it has an inclined assist surface.

  In the present invention, the guided portion moves forward and backward following the guide portion, thereby generating an assist force on the assist surface of the guide portion due to the component force of the biasing member and at least one side in the pulling direction. Can be made.

  For this reason, in this invention, at least one of the automatic drawing-in and drawing-out operation | movement with respect to a storage part can be performed for a drawing-out member, and operation | movement of a drawing-out member can be assisted.

  In addition, in the present invention, since the assist force is generated by the biasing force of the biasing member, it is possible to suppress the variation in the assist force accompanying the weight variation of the drawing member.

(Example 1) which is the front view which notched some storage furniture which has an assist mechanism. (Example 1) which is the side view which notched some storage furniture of FIG. (A) is an enlarged side view of the assist mechanism of FIG. 1, and (b) is an enlarged front view of the assist mechanism of FIG. 2 (Example 1). FIG. 2 is an enlarged perspective view showing the assist mechanism of FIG. 1 from the back side (Example 1). FIG. 3 is an enlarged perspective view showing the assist mechanism of FIG. 1 from the front side (Example 1). FIG. 2 is a perspective view showing a damper of the assist mechanism of FIG. 1 (Example 1). (A)-(e) is a side view which shows operation | movement of the assist mechanism which concerns at the time of the drawing-out operation | movement from a storage position (Example 1). (A)-(e) is a side view which shows operation | movement of the assist mechanism which concerns at the time of drawer | drawing-out operation from a storage position (Example 2). (Example 3) which is a side view which shows the guide rail of an assist mechanism. (Example 4) which is a side view which shows the guide rail of an assist mechanism. (Example 5) which is a side view which shows the guide rail of an assist mechanism. (Example 6) which is a side view which shows the guide rail of an assist mechanism. (Example 7) which is a side view which shows the guide rail of an assist mechanism. (Example 8) which is a side view which shows an assist mechanism. (Example 9) which is a front view which shows the support unit of an assist mechanism.

  The purpose of suppressing the variation of the assist force due to the weight of the drawing member is realized by generating the assist force by the biasing force of the biasing member.

[Schematic configuration of storage furniture]
FIG. 1 is a front view in which a part of a storage furniture having an assist mechanism according to a first embodiment of the present invention is cut out, and FIG. 2 is a side view thereof.

  As shown in FIGS. 1 and 2, the storage furniture 1 includes an upper storage unit 3 and a lower storage unit 5. The upper storage 3 is opened and closed by a double door 7. The lower storage section 5 is configured in multiple stages by storing a plurality of drawers 9 as drawer members. In this embodiment, the lower storage 5 has a four-stage configuration.

The drawers 9 of each stage are supported so as to be linearly movable in the front-rear direction via slide rails 10 provided in the lower stage storage section 5. By such linear movement, the drawer 9 is pulled out and pulled in with respect to the lower storage unit 5. An assist mechanism 11 is provided between the drawer 9 and the lower storage portion 5.
[Configuration of assist mechanism]
3A is an enlarged side view of the assist mechanism shown in FIG. 1, FIG. 3B is an enlarged front view of the assist mechanism shown in FIG. 2, and FIG. 4 is an enlarged perspective view showing the assist mechanism shown in FIG. 5 is an enlarged perspective view showing the assist mechanism of FIG. 1 from the front side, and FIG. 6 is a perspective view showing a damper of the assist mechanism of FIG. 1. The assist mechanism 11 is a guide portion as shown in FIGS. A guide rail 13, a guide roller 15 as a guided portion, and dampers 17 and 19 are provided.

  The guide rail 13 is made of a metal plate such as stainless steel, for example. 2 to 5, the guide rail 13 is attached to the side surface 21 of the drawer 9 and is provided along the front-rear direction, which is the operation direction of the drawer 9. The guide rail 13 includes a main body portion 23 and inclined portions 25 and 27.

  The main body portion 23 is formed at an intermediate portion of the guide rail 13 in the front-rear direction. The upper surface of the main body 23 is a non-assist surface 29 along the front-rear direction. A fastening plate 31 is integrally provided on the lower surface side of the main body 23. The fastening plate 31 is fastened and fixed to the side surface 21 of the drawer 9 by screws 33. Inclined portions 25 and 27 are integrally provided on both sides of the main body portion 23 in the front-rear direction.

  The inclined portions 25 and 27 are bent with respect to the main body portion 23. The inclined portions 25 and 27 are set so as to gradually descend toward the front end portion and the rear end portion, respectively. Assist surfaces 35 and 37 are formed on the upper surfaces of the inclined portions 25 and 27, respectively. For this reason, the assist surfaces 35 and 37 of a present Example are the structures provided in the both sides of the front-back direction of the guide rail 13. FIG.

  The assist surfaces 35 and 37 are inclined surfaces having a constant inclination according to the inclination setting of the inclined portions 25 and 27. That is, the assist surfaces 35 and 37 are gradually inclined downward toward the front end portion and the rear end portion, respectively.

  The guide roller 15 is supported on the front end side of the lower storage portion 5 via a support unit 39 and is unitized with the support unit 39. The support unit 39 includes a support part 41, a movable part 43, and a coil spring 45 as an urging member.

  The support part 41 includes a support plate 47 made of a metal plate such as stainless steel. The support plate 47 is arranged along the up-down direction which is a direction intersecting the operation direction of the drawer 9.

  The lower end of the support plate 47 is fastened and fixed to the outer surface 49 of the slide rail 10 on the storage furniture 1 side by bolts 51. An end plate 53 is fastened and fixed to the upper end of the support plate 47 by bolts 55. The end plate 53 extends from the support plate 47 toward the slide rail 10.

  Support rails 57 are provided on the inner surface of the support plate 47 along the vertical direction. The movable portion 43 is supported via the support rail 57 so as to be movable in the vertical direction.

  The movable portion 43 is formed in a box shape having a rectangular cross section. The movable portion 43 is disposed with a gap on the outside of the guide rail 13 on the drawer 9 side. A base 59 is fastened and fixed to the back side of the movable portion 43 by a bolt 61. The base 59 is slidably engaged with the support rail 57 of the support plate 47. A coil spring 45 is provided between the movable portion 43 and the end plate 53 of the support portion 41.

  Both ends of the coil spring 45 are fitted and fixed to the movable portion 43 and the end plate 53 via bolts 63 and 65. The coil spring 45 biases the movable portion 43 downward with respect to the end plate 53.

  The guide roller 15 is made of metal such as stainless steel. The guide roller 15 is disposed on the guide rail 13 and is rotatably supported around the rotation shaft 67. The rotation shaft 67 of the guide roller 15 is fixed to the movable portion 43 of the support unit 39. For this reason, the guide roller 15 moves up and down together with the movable portion 43 and moves forward and backward with respect to the guide rail 13.

  The guide roller 15 is urged forward by a biasing force of the coil spring 45 through the movable portion 43 to the lower side which is the guide rail 13 side. Therefore, the guide roller 15 is in elastic contact with the guide rail 13.

  The dampers 17 and 19 generate a damper drag force by the contraction movement of the piston rods 69 and 71. In the dampers 17 and 19, piston rods 69 and 71 are urged in an extending direction by an internal return spring.

  One damper 17 is fixed on the slide rail 10 on the lower storage part 5 side via a stay 73. The base plate 75 of the stay 73 is fastened and fixed on the slide rail 10 by bolts 77.

  A vertical plate 79 is erected on the base plate 75, and the damper 17 is fastened and fixed to the vertical plate 79 by a clamp 81 and a bolt 83. The vertical plate 79 is integrally provided with an abutting plate 85, and the rear end of the damper 17 is abutted and supported by the abutting plate 85.

  This damper 17 is arranged behind the drawer 9. The piston rod 69 of the damper 17 faces the pressing block 87 fixed to the rear end side of the side surface 21 of the drawer 9 in the front-rear direction. As a result, the piston rod 69 is pressed by the pressing block 87 during the retracting operation of the drawer 9 and is contracted and moved.

The other damper 19 is fixed to the rear end side of the side surface 21 of the drawer 9 via an integral flange portion 91 and a screw 93. The piston rod 71 of the damper 19 faces the pressing block 89 fixed to the front end side of the inner side surface of the lower storage part 5 in the front-rear direction. As a result, the piston rod 71 is contracted and moved by being pressed by the pressing block 89 when the drawer 9 is pulled out.
[Operation of assist mechanism]
7A to 7E are side views showing the operation of the assist mechanism.

  The assist mechanism 11 assists withdrawing and retracting the drawer 9 with respect to the lower storage unit 5. Hereinafter, the case where the drawer 9 is pulled out from the storage position will be described.

  As shown in FIG. 7A, in the storage position, the drawer 9 is retracted and stored in the lower storage unit 5 as a whole. In this state, the guide roller 15 on the lower storage portion 5 side is in elastic contact with the assist surface 35 on the front end side of the guide rail 13 on the drawer 9 side.

  That is, the guide roller 15 presses the assist surface 35 inclined downward toward the front end portion by the urging force of the coil spring 45. For this reason, the guide roller 15 generates a moving force (assist force) in the retracting direction (rear side) due to the component force of the urging force. With this assist force, the drawer 9 is securely held in the storage position with respect to the lower storage portion 5.

  In the storage position, the piston rod 69 of the damper 17 is pushed into the contracted position by the pressing block 87 on the drawer 9 side.

  When the drawer 9 is pulled out from the storage position, the guide rail 13 moves in the pulling direction (front side) together with the drawer 9. As a result, the guide roller 15 is gradually retracted upward along the assist surface 35 of the guide rail 13 while rolling as shown in FIG. 7B.

  At this time, the guide roller 15 retreats against the urging force of the coil spring 45, and thus generates an assist force in the retracting direction similar to the above-described storage position. Therefore, the drawer 9 is pulled out against the assist force in the pull-in direction.

  At the time of such movement, the piston rod 69 of the damper 17 extends by following the pressing block 87 on the drawer 9 side by the bias of the return spring.

  Thus, the guide roller 15 moves from the assist surface 35 on the front end side of the guide rail 13 to the intermediate non-assist surface 29 side.

  On the non-assist surface 29, as shown in FIG. 7C, the guide roller 15 moves to the rear end side assist surface 37 side while rolling. At this time, since the non-assist surface 29 is along the front-rear direction, no assist force is generated in either the pull-in direction or the pull-out direction. Therefore, the operation can be smoothly performed in the intermediate stage of the pulling-out operation.

  On the assist surface 37 of the guide rail 13, as shown in FIG. 7D, the guide roller 15 gradually moves downward along the assist surface 37 of the guide rail 13 while rolling.

  At this time, the guide roller 15 presses the assist surface 37 inclined downward toward the rear end portion by the urging force of the coil spring 45. Therefore, the guide roller 15 can generate a moving force (assist force) in the pull-out direction by a component of the urging force. With this assist force, the drawer 9 is automatically pulled out to the protruding position withdrawn as a whole from the lower storage portion 5 as shown in FIG.

  Thus, the assist mechanism 11 can assist the pulling operation by automatically pulling out the drawer 9.

  At the time of such automatic pull-out, buffering by the damper 19 on the drawer 9 side is performed immediately before the protruding position. That is, in the damper 19, the piston rod 71 abuts against the pressing block 89 on the lower storage portion 5 side and is relatively pressed according to the pulling-out operation of the drawer 9.

  For this reason, the damper 19 can generate a damper drag by the contraction movement of the piston rod 71. Therefore, the assist mechanism 11 can smoothly perform the automatic pull-out assist operation of the drawer 9 while buffering the impact.

The pull-in operation from the protruding position can be performed in the same manner as in the reverse procedure of the pull-out operation.
[Effect of Example 1]
The assist mechanism 11 according to the present embodiment is supported on one side of the lower storage portion 5 and the drawer 9 along the operation direction of the drawer 9 and on the other side of the lower storage portion 5 and the drawer member 9. A guide roller 15 that moves forward and backward along the guide rail 13 according to the operation of the drawer 9 and a coil spring 45 that advances and urges the guide roller 15 toward the guide rail 13 are provided. The guide rail 13 is at least the drawer 9. The assist surfaces 35 and 37 are provided on one side of the operation direction and are inclined toward the end side.

  Therefore, the assist mechanism 11 moves at least in the pull-in and pull-out directions by the component force of the urging force of the coil spring 45 on the assist surfaces 35 and 37 of the guide rail 13 as the guide roller 15 moves forward and backward along the guide rail 13. An assist force toward one side can be generated.

  For this reason, the assist mechanism 11 can cause the drawer 9 to perform at least one of automatic pulling and pulling operations with respect to the lower storage portion 5, and can assist the operation of the drawer 9.

  In addition, in the assist mechanism 11, since the assist force is generated by the biasing force of the coil spring 45, fluctuations in the assist force accompanying an increase in the weight of the drawer 9 can be suppressed. As a result, it is possible to prevent the operation in the counter-assist direction from becoming difficult due to the variation of the assist force.

  In the assist mechanism 11 of the present embodiment, the assist surfaces 35 and 37 are provided on both sides in the operation direction of the drawer 9, so that the assist operation can be performed for both the pull-in and the pull-out operations.

  Since the assist surfaces 35 and 37 are slopes having a constant inclination, it is possible to easily and surely generate an assist force by a component force of the urging force.

  In this embodiment, since the guide roller 15 as the guided portion rolls on the guide rail 13, the guide roller 15 can be moved forward and backward smoothly along the guide rail 13, and the assist force can be smoothly moved. Can be generated.

  Further, in the assist mechanism 11, a support portion 41 attached to the other side of the lower storage portion 5 and the drawer 9 and a movable portion 43 supported by the support portion 41 so as to be movable in a direction crossing the operation direction of the drawer 9. The guide roller 15 is attached to the movable portion 43, and the coil spring 45 biases the movable portion 43.

  Therefore, in this embodiment, the support portion 41, the movable portion 43, the guide roller 15, and the coil spring 45 can be unitized, and the configuration can be simplified.

  Further, since the assist mechanism 11 of the present embodiment includes the dampers 17 and 19 that buffer the assist operation of the drawer 9, the assist operation can be smoothly performed while buffering the impact.

  In addition, in this embodiment, the dampers 17 and 19 can be used as stoppers for the drawer 9, and the configuration can be simplified while providing a buffer function.

  FIGS. 8A to 8E are side views showing the operation of the assist mechanism according to Embodiment 2 of the present invention. Since the basic structure of the present embodiment is the same as that of the first embodiment, the corresponding parts are denoted by the same reference numerals or the same reference numerals are denoted by A, and redundant description is omitted.

  The assist mechanism 11A of the present embodiment is provided with a single damper 95 instead of the pair of dampers 17 and 19 of the first embodiment.

  In the damper 95, piston rods 69A and 71A on both sides are interlocked via a piston (not shown), and when one of the piston rods 69A and 71A contracts, the other expands. The piston rods 69A and 71A are urged in the extending direction by an internal return spring and are held in a neutral position in a free state. The damper 95 generates a two-way damper drag force by the contraction movement of the piston rods 69A and 71A.

  The damper 95 is fixed to the rear end side of the side surface 21 of the drawer 9 by a clamp 81. One piston rod 69A faces the pressing block 87A fixed on the slide rail 10 behind the drawer 9 in the front-rear direction. The other piston rod 71A is opposed to the pressing block 89A fixed to the front end side of the lower housing 5 in the front-rear direction.

  Therefore, also in the assist mechanism 11A of the present embodiment, the same operational effects as those of the first embodiment can be obtained.

  In addition, in the assist mechanism 11A, the damper resistance can be generated by the single damper 95 during any assist operation by automatic pull-in and pull-out, and the configuration can be simplified.

  FIG. 9 is a side view showing the guide rail of the assist mechanism according to the third embodiment of the present invention. Since the basic structure of the present embodiment is the same as that of Embodiments 1 and 2, the corresponding parts are denoted by the same reference numerals or the same reference numerals are denoted by B, and redundant description is omitted.

  In the present embodiment, as shown in FIG. 9, a guide rail 13 </ b> B having a concave portion 99 at the intermediate portion in the front-rear direction is used instead of the guide rail 13 of the first embodiment.

  That is, the guide rail 13B includes a concave portion 99 that is curved and formed in the intermediate portion of the main body portion 23B. The curvature of the recess 99 is substantially the same as the curvature of the guide roller 15, and the lower side of the guide roller 15 is fitted.

  Therefore, in this embodiment, in addition to the same effects as those of the first embodiment, the guide roller 15 is fitted into the concave portion 99 of the guide rail 13B, whereby the drawer 9 is moved to the storage position and the protruding position. Can be held at an intermediate position.

  FIG. 10 is a side view showing the guide rail of the assist mechanism according to the fourth embodiment of the present invention. Since the basic structure of the present embodiment is the same as that of Embodiments 1 and 2, the same reference numerals are assigned to the corresponding portions, and the duplicate description is omitted.

  In this embodiment, as shown in FIG. 10, a guide rail 13C having a step surface 101 in the middle of the assist surfaces 35C and 37C is used instead of the guide rail 13 of the first embodiment.

  In other words, the guide rail 13C includes a step portion 103 along the front-rear direction at an intermediate portion between the inclined portions 25C and 27C. A step surface 101 is formed on the upper surface of the step portion 103.

  Therefore, also in the present embodiment, the same operational effects as those of the first embodiment can be obtained. In addition, in the present embodiment, since the step surface 101 where no assist force is generated exists in the intermediate portion between the assist surfaces 35C and 37C, the drawer 9 can be accelerated on the step surface 101 when operated in the counter-assist direction. . Therefore, the operation in the counter-assist direction can be performed more easily.

  Further, since no assist force is generated on the step surface 101 during the assist operation, the drawer 9 can be operated with inertia. As a result, in the present embodiment, the load on the dampers 17, 19, and 95 can be reduced.

  FIG. 11 is a side view showing the guide rail of the assist mechanism according to the fifth embodiment of the present invention. Since the basic structure of this embodiment is the same as that of Embodiments 1 and 2, the same reference numerals are assigned to the corresponding portions, and the duplicate description is omitted.

  In this embodiment, as shown in FIG. 11, a guide rail 13 </ b> D provided with return portions 105 at both ends in the front-rear direction is used instead of the guide rail 13 of the first embodiment.

  That is, in the guide rail 13D, the return portion 105 is curved and formed at the tip portions of the inclined portions 25D and 27D. The return portion 105 has a tip extending upward and is inclined opposite to the inclined portions 25D and 27D. When the guide roller 15 moves following the return portion 105, an anti-assist force is generated.

  Therefore, in this embodiment, in addition to the same effects as in the first embodiment, the anti-assist force by the return portion 105 can be exerted at the end of the assist operation to exhibit the damper effect. As a result, the load on the dampers 17, 19, and 95 can be reduced.

  FIG. 12 is a side view showing the guide rail of the assist mechanism according to the sixth embodiment of the present invention. Since the basic structure of this embodiment is the same as that of Embodiments 1 and 2, the same reference numerals are assigned to the corresponding parts, or duplicated explanations are omitted.

  In this embodiment, as shown in FIG. 12, instead of the guide rail 13 of the first embodiment, a guide rail 13E in which the positions of the assist surfaces 35E and 37E in the front-rear direction are changed is used.

  That is, the guide rail 13E is provided with inclined portions 25E and 27E closer to the intermediate portion with respect to the front and rear end portions. Assist surfaces 35E and 37E are formed on the surfaces of the inclined portions 25E and 27E.

  A bottom portion 107 is formed along the front-rear direction on the front-rear end side with respect to the inclined portions 25E, 27E. A bottom surface 109 is formed on the surface of the bottom portion 107.

  Therefore, also in the present embodiment, the same operational effects as those of the first embodiment can be obtained.

  In addition, in the present embodiment, there is a bottom surface 109 where no assist force is generated on the front and rear end sides with respect to the assist surfaces 35E and 37E. Can do. Therefore, the operation in the counter-assist direction can be performed more easily.

  Further, in this embodiment, since no assist force is generated on the bottom surface 109, the drawer 9 can be operated with inertia immediately before the assist operation ends. As a result, in the present embodiment, the load on the dampers 17, 19, and 95 can be reduced.

  FIG. 13 is a side view showing the guide rail of the assist mechanism according to the seventh embodiment of the present invention. Since the basic structure of this embodiment is the same as that of Embodiments 1 and 2, the same reference numerals are assigned to the corresponding portions or F is assigned to the same reference numerals, and redundant description is omitted.

  In the present embodiment, as shown in FIG. 13, a guide rail 13 </ b> F having assist surfaces 35 </ b> F and 37 </ b> F composed of a plurality of inclined surfaces is used instead of the guide rail 13 of the first embodiment.

  That is, the guide rail 13F is provided with the first inclined portion 111 on the main body portion 23F side and the second inclined portion 113 on the end portion side, with the inclined portions 25F and 27F being bent at the intermediate portion in the front-rear direction. The first inclined portion 111 has a smaller inclination angle than the second inclined portion 113.

  The assist surfaces 35F and 37F include slopes 115 and 117 formed on the surfaces of the first slope part 111 and the second slope part 113 of the slope parts 25F and 27F. That is, the assist surfaces 35F and 37F are composed of two inclined surfaces 115 and 117 having different inclinations. The assist surface may be composed of three or more inclined surfaces having different inclinations.

  In the guide rail 13F of the present embodiment, an integral rib 119 is provided on the lower surface side of the main body portion 23F to improve rigidity.

  Also in this embodiment, the same effects as those of the first embodiment can be obtained.

  In addition, in the present embodiment, the assist force can be adjusted to the damper characteristics of the dampers 17, 19, and 95 by changing the assist force stepwise. As a result, in this embodiment, the assist operation of the drawer 9 can be performed more smoothly.

  FIG. 14 is a side view showing an assist mechanism according to Embodiment 8 of the present invention. Since the basic structure of the present embodiment is the same as that of the first embodiment, the corresponding portions are denoted by the same reference numerals or the same reference numerals G, and redundant description is omitted.

  In this embodiment, as shown in FIG. 14, instead of the single guide rail 13 of the first embodiment, a pair of guide rails 13G and 14G for pull-in and pull-in are used.

  The guide rails 13G and 14G are arranged symmetrically on both sides in the front-rear direction of the drawer 9, and a gap 121 is formed between them. The inclined portion 25F on the gap 121 side is set to be inclined more gently than the inclined portion 27F, and the anti-assist force is reduced.

  The tip of the inclined portion 25F is disposed below the rotational axis of the guide roller 15 in a free state. As a result, the inclined portion 25F can ride on the guide roller 15 that is in a free state in the gap 121.

  In this embodiment, the same effects as those of the first embodiment can be achieved.

  In addition, in this embodiment, since the guide rails 13G and 14G are divided and arranged on both sides in the front-rear direction of the drawer 9, it is possible to easily cope with a change in the length of the drawer 9 in the front-rear direction. .

  Further, between the guide rails 13G and 14G, the guide roller 15 can be brought into a free state within the gap 121, and the drawing and pulling-in operations can be easily performed.

  FIG. 15 is a front view showing a support unit used in the assist mechanism according to Embodiment 9 of the present invention. Since the basic structure of the present embodiment is the same as that of the first embodiment, the corresponding parts are denoted by the same reference numerals or the same reference numerals are denoted by H, and redundant description is omitted.

  In this embodiment, instead of the support unit 39 of the first embodiment, a support unit 39H provided with a damper 123 is used.

  In the support unit 39H, the damper 123 is accommodated and supported in the movable portion 43H. The piston rod 125 of the damper 123 protrudes from the lower surface of the movable portion 43H, and extends and contracts in the vertical direction. A tip end portion 127 of the piston rod 125 is disposed to face the upper surface of the slide rail 10 of the lower storage portion 5.

  In such a support unit 39 </ b> H, the leading end portion 127 of the piston rod 125 is brought into contact with and pressed against the upper surface of the slide rail 10 of the lower storage portion 5 in accordance with the pulling-out and pulling-out operations of the drawer 9.

  For this reason, in the assist mechanism 11H, the automatic pull-out assist operation of the drawer 9 can be smoothly performed while the shock is buffered by the damper 123 in the movable portion 43H of the support unit 39H.

  In this embodiment, the same effects as those of the first embodiment can be achieved.

  In addition, in the present embodiment, the shock during the pulling-in and pulling-in operations can be buffered by the damper 123 in the movable portion 43H of the support unit 39H.

For this reason, in this embodiment, it is possible to make a unit including the damper 123 on the guide roller 15 side, simplifying the structure, reducing the number of parts, and assembling by omitting the damper and the pressing block of the above embodiment. The workability can be improved.
[Others]
As mentioned above, although the Example of this invention was described, this invention is not limited to this, Various design changes are possible.

  For example, in the above-described embodiment, the assist mechanisms 11 to 11H are installed so that the guide rollers 15 are elastically contacted from above the guide rails 13 to 13H, but the guide rollers 15 are installed upside down as a whole. It can also comprise so that it may contact elastically from the lower side of guide rails 13-13H. Similarly, the assist mechanisms 11 to 11H can be installed in the horizontal direction. In this case, the guide rails 13 to 13H may be attached to the lower surface side of the drawer 9.

  In the above embodiment, the guide rails 13 to 13H are provided on the drawer 9 side and the guide roller 15 is provided on the lower storage portion 5 side. On the contrary, the guide rails 13 to 13H are provided on the lower storage portion 5 side. The guide roller 15 may be provided on the drawer 9 side.

  Moreover, in the said Example, although the guide rails 13-13H were used as a guide part, it is also possible to use a block-shaped guide part, for example.

  In the above-described embodiment, the assist surfaces 35 to 35H and 37 to 37H are configured by slopes. However, the assist surfaces 35 to 35H and 37 to 37H may be configured by curved surfaces including a plurality of minute slopes having different slopes.

  The structure of the guide rail of the said Examples 3-9 can be used in combination as appropriate.

  Further, the assist mechanism of the present invention can be applied to, for example, storage furniture as a drawer member and a sliding door for joinery.

5 Lower storage part 9 Drawer (drawer member)
11 Assist mechanism 13 Guide rail (guide part)
15 Guide roller (guided part)
17, 19, 95 Damper 35, 37 Assist surface 41 Support portion 43 Movable portion 45 Coil spring (biasing member)
99 Concave portion 101 Step surface 109 Bottom surface

Claims (11)

A drawing member assist mechanism for assisting at least one of drawing and drawing operations of the drawing member with respect to the storage unit;
A guide portion provided on one side of the storage portion and the drawing member along the operation direction of the drawing member;
A guided portion supported on the other side of the storage portion and the drawing member and moving forward and backward along the guide portion in accordance with the operation of the drawing member;
A biasing member for advancing and biasing the guided portion toward the guide portion;
The guide portion has an assist surface that is provided at least on one side in the operation direction of the drawing member and is inclined toward the end portion side.
An assist mechanism for the drawing member. An assist mechanism for the drawer member according to claim 1,
The assist surfaces are provided on both sides in the operation direction of the drawing member,
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to claim 1 or 2,
The assist surface comprises a slope with a constant inclination,
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to claim 1 or 2,
The assist surface is composed of a plurality of inclined surfaces having different inclinations.
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to any one of claims 1 to 4,
The assist surface includes a step surface along the operation direction of the extraction member at an intermediate portion.
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to any one of claims 1 to 5,
The assist surface includes a return portion that generates an anti-assist force on the end side.
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to any one of claims 1 to 5,
The assist surface includes a bottom surface along the operation direction of the drawing member on the end side.
An assist mechanism for the drawing member. It is an assist mechanism of the drawer member in any one of Claims 1-7,
The guide portion includes a recess for fitting the guided portion to an operation direction intermediate portion of the drawing member.
An assist mechanism for the drawing member. An assist mechanism for a drawing member according to any one of claims 1 to 8,
The guide portion is a guide rail,
The guided portion is a roller that rolls on the guide rail.
An assist mechanism for the drawing member. An assist mechanism for the drawing member according to any one of claims 1 to 9,
A support portion attached to the other side of the storage portion and the drawer member;
A movable portion supported by the support portion so as to be movable in a direction intersecting the operation direction of the drawing member;
The guided portion is attached to the movable portion,
The biasing member biases the movable part;
An assist mechanism for the drawing member. An assist mechanism for a drawing member according to any one of claims 1 to 10,
A damper for buffering the assisting operation of the drawing member;
An assist mechanism for the drawing member.