JPWO2018142762A1 - Retractor - Google Patents

Abstract

Provided is a retractor capable of preventing deformation of a case.
The retracting device (1) includes a case (7) having a U-shaped cross section, an arm (5) rotatably supported between a position pulled out to the case (7) and a retracted position, and an arm (5). A slider (11) that moves in the longitudinal direction of the case (7) in conjunction with the spring (12), and a spring (12) that biases the slider (11) so that at least a rotational force in the retracting direction acts on the arm (5) . The slider (11) and the spring (12) are arranged on one side in the length direction of the case (7) with respect to the axis (9) which is the center of rotation of the arm (5). A case opening (8) for accommodating the arm (5) is arranged on the other side in the length direction of the case (7) with respect to the shaft (9).

Description

  The present invention relates to a retracting device for retracting a door, a lid and the like.

  2. Description of the Related Art A retracting device that pulls in a door, a lid, and the like (hereinafter referred to as a door) is known (see Patent Document 1). The retracting device includes a case, an arm rotatably supported between a position pulled out by the case and a retracted position, a slider that moves in the length direction of the case in conjunction with the arm, and at least retracted into the arm. And a spring for biasing the slider so that the rotational force in the direction works. The retracting device is attached to either the door or the frame. The receiving shaft that engages with the arm is attached to the other of the door and the frame.

  Initially the arm is in the extended position. When closing the door or the like, the receiving shaft is engaged with the arm at the position where it is pulled out, and the arm rotates in the retracting direction. When the arm rotates to a predetermined angle in the retracting direction, a rotational force in the retracting direction acts on the arm by the force of the spring biasing the slider. The door and the like are automatically closed by the rotational force in the retracting direction acting on the arm.

  By the way, in the conventional retracting device, the case is formed in a U-shaped cross section so that components such as a spring can be incorporated. The case is formed with a case opening for accommodating the arm. And a spring, a slider, and a case opening part are arrange | positioned rather than the axis | shaft used as the center of rotation of an arm in the same side in the length direction of a case.

Japanese Patent No. 5562509

  However, the urging force from the spring and the force from the arm side act on the slider. The resultant force exerts on the slider a force that pushes the side wall of the case in a direction perpendicular to the length direction of the case. In the conventional drawing-in apparatus, there exists a subject that a case may deform | transform by the force which pushes the side wall which acts on a slider.

  Then, an object of this invention is to provide the drawing-in apparatus which can prevent a deformation | transformation of a case.

  In order to solve the above problems, the present invention provides a case having a U-shaped cross section, an arm that is rotatably supported between a position pulled out by the case and a retracted position, and the arm in conjunction with the arm. In a retracting device comprising: a slider that moves in a length direction of the case; and a spring that urges the slider so that at least a rotational force in the retracting direction acts on the arm. From a shaft that is the center of rotation of the arm Also, the slider and the spring are disposed on one side in the length direction of the case, and the case opening for housing the arm is disposed on the other side in the length direction of the case with respect to the shaft. Device.

  In the present invention, arranging the case opening on the other side of the case means that the area of the case opening on the other side of the case is larger than the area of the case opening on one side of the case. This includes the case where the case opening is disposed only on the other side.

  According to the present invention, the slider and the spring are arranged on one side in the length direction of the case from the axis serving as the center of rotation of the arm, and the case opening for accommodating the arm is arranged on the other side. It can prevent that the rigidity of one side of this falls by a case opening part. Therefore, even if the slider pushes the side wall of the case in a direction orthogonal to the length direction of the case, the case can be prevented from being deformed.

It is a perspective view of the upper part of the door in which the drawing-in apparatus of one Embodiment of this invention is integrated. FIG. 2A is a plan view (a cross-sectional view of the frame) of the door (FIG. 2A shows a state in which the arm in the pulled-out position engages with the receiving seat (door retracting start position), and FIG. Indicates the retracted position of the arm (the closed position of the door). It is an external appearance perspective view of the drawing-in apparatus of this embodiment. It is an upper surface side exploded perspective view of the drawing-in device of this embodiment. It is a lower surface side exploded perspective view of the drawing-in device of this embodiment. It is a perspective view (including a sectional view of a case) showing the principal part of the drawing device of this embodiment. It is a perspective view (including a sectional view of a case) showing a damper position adjustment mechanism of the retracting device of the present embodiment. FIG. 8A is a side view showing an example in which the position of the damper is adjusted in three stages (FIG. 8A is an example in which the braking force of the damper is the weakest, and FIG. 8B is an example in which the braking force of the damper is intermediate). FIG. 8C shows an example in which the braking force of the damper is the largest). It is a disassembled perspective view which shows a receiving seat. FIGS. 10A and 10B are operation diagrams of the retracting device when the arm rotates from the retracted position to the retracted position (FIG. 10A shows the retracted position of the arm, FIG. 10B shows the parallel position of the link, and FIG. (C) shows the thought point position of the link, and FIG. 10 (d) shows the position where the arm is pulled out).

  Hereinafter, based on an accompanying drawing, a retraction device of one embodiment of the present invention is explained. However, the retracting device of the present invention can be embodied in various forms, and is not limited to the embodiments described herein. This embodiment is provided with the intention of enabling those skilled in the art to fully understand the scope of the invention by fully disclosing the specification.

  FIG.1 and FIG.2 shows the door 2 in which the drawing-in apparatus 1 of this embodiment was integrated. FIG. 1 is a perspective view of the upper portion of the door 2, and FIG. 2 is a plan view of the door 2 (a cross-sectional view of the frame). A door 2 is attached to the frame 3 via a hinge 4 so as to be opened and closed. A retracting device 1 is embedded in the upper surface of the door 2. The retracting device 1 includes a rotatable arm 5. The arm 5 rotates between the pulled-out position shown in FIG. 2A and the retracted position shown in FIG. A receiving shaft 6 (see FIG. 2A) is provided on the lower surface of the upper frame of the frame 3. The arm 5 engages with the seat shaft 6.

  Initially, the arm 5 is in the extended position. When the door 2 in the open position is closed, as shown in FIG. 2A, the arm 5 in the pulled-out position engages with the seat shaft 6 (that is, the seat shaft 6 is inserted into the groove 5a of the arm 5). Fit). When the door 2 is further closed, the arm 5 at the pulled-out position rotates in the retracting direction. As shown in FIG. 2 (b), the door 2 is automatically closed by the rotational force in the retracting direction acting on the arm 5. At this time, the arm 5 is in the retracted position.

  FIG. 3 shows an external perspective view of the retracting device 1. The arm 5 is rotatably supported by the case 7. The case 7 is formed with a case opening 8 in which the arm 5 is accommodated. A slider 11 (see FIG. 4) and a spring 12 (see FIG. 4) are arranged on one side (the right side in FIG. 3) in the length direction of the case 7 with respect to the shaft 9 serving as the center of rotation of the arm 5. A case opening 8 is disposed on the other side (left side in FIG. 3) in the length direction of the case 7 with respect to the shaft 9.

  FIG. 4 shows an exploded top perspective view of the retractor 1. FIG. 5 shows an exploded perspective view of the lower surface side of the retracting device 1. Reference numeral 7 is a case, reference numeral 5 is an arm, reference numeral 9 is a shaft, reference numeral 11 is a slider, reference numeral 12 is a spring, and reference numeral 18 is a damper.

  In the following description, for convenience of explanation, the retracting device 1 is arranged on a horizontal plane, and the retracting device is used by using the direction when the case 7 is viewed from the length direction, that is, the top, bottom, left, right, front, and rear in FIGS. 1 will be described. Of course, the arrangement of the retracting device 1 is not limited to such an arrangement.

  As shown in FIG. 4, the case 7 is long in the front-rear direction and has a U shape in a cross-sectional view orthogonal to the front-rear direction. The case 7 includes an upper wall 7a and a pair of left and right side walls 7b and 7c that are bent at right angles from both ends in the width direction of the upper wall 7a and face each other. The lower surface of the case 7 is opened so that components such as the arm 5, the slider 11, the spring 12, and the damper 18 can be inserted. The lengthwise end surface of the case 7 is also opened so that these parts can be inserted. As shown in FIG. 5, a triangular bent piece 7 d that protrudes toward the opposite side wall 7 b is formed at the center in the front-rear direction of the lower end of the side wall 7 c.

  As shown in FIG. 4, the upper and lower ends of the shaft 9 are supported by the upper wall 7a and the bending piece 7d. A hole 7a1 into which the shaft 9 is inserted is formed in the upper wall 7a of the case 7. The lower end portion of the shaft 9 is fixed to the bending piece 7d by fixing means such as caulking.

  A substantially square case opening 8 that is cut out in accordance with the shape of the arm 5 is formed on the back side of the case 7 from the shaft 9. To be exact, most of the case opening 8 is formed on the back side of the shaft 9, and a part of the case opening 8 is also formed on the front side of the shaft 9 so as to avoid the hole 7a1. . The case opening 8 is also formed at the intersection of the upper wall 7a and the side wall 7b.

  The arm 5 is rotatably supported on the shaft 9 via a bearing 20. The arm 5 includes a horizontally long and flat arm main body 21 and an arm shaft portion 22 fixed to the arm main body 21. A groove 5 a extending in the length direction of the arm body 21 is formed on the upper surface of the arm body 21. The rear end of the groove 5a is opened so that the seat shaft 6 can be received.

  The arm body 21 and the arm shaft portion 22 are non-rotatably connected by the first pin 31 and the second pin 32. The arm shaft portion 22 includes a substantially triangular upper plate portion 22a and a substantially triangular lower plate portion 22b. A hole through which the first pin 31 and the second pin 32 are passed is formed in the upper plate portion 22a and the lower plate portion 22b. The upper ends of the first pin 31 and the second pin 32 are fixed to the arm body 21 by fixing means such as caulking.

  The first pin 31 is for giving a rotational force to the arm 5. One end of a link 23 for applying a rotational force to the arm 5 is rotatably connected to the first pin 31. One end portion of the link 23 is sandwiched between the upper plate portion 22a and the lower plate portion 22b. The second pin 32 is for braking the rotation of the arm 5. A damper slider 15 for applying a braking force to the arm 5 is rotatably and slidably connected to the second pin 32.

  A guide body 13, a slider 11, a spring 12, and a spring base 14 are disposed on the near side of the case 7 with respect to the shaft 9. These parts are provided to give the arm 5 a rotational force in the retracting direction or the pulling direction. As will be described in detail later, these parts give the arm 5 a rotational force in the retracting direction until the link 23 exceeds the thought point, and when the link 23 exceeds the thought point, the component 5 gives the arm 5 a rotational force in the withdrawal direction. give.

  The guide body 13 has a rectangular frame shape in cross section, and includes a main body portion 13a having a closed cross section, and a cylindrical portion 13b formed integrally with the main body portion 13a. The guide body 13 is fitted between the side walls 7b and 7c of the case 7, and is fixed to the case 7 by fixing means such as caulking pins.

  The slider 11 fits in the guide body 13 without a gap, and moves in the guide body 13 in the length direction of the case 7. The slider 11 includes a cylindrical spring receiver 11 a into which one end of the spring 12 is inserted, and a cylindrical portion 11 b that is formed integrally with the spring receiver 11 a and fits into the cylindrical portion 13 b of the guide body 13. As shown in FIG. 6, the cylindrical portion 11 b is formed with a concave portion 11 b 1 in which a third pin 33 provided at the other end portion of the link 23 is rotatably fitted.

  As shown in FIG. 4, the spring 12 is a coil spring. The number of springs 12 is two, but is not limited. The spring 12 is compressed between the slider 11 and the spring base 14 and urges the slider 11 backward.

  The spring base 14 includes a rectangular plate-like main body portion 14 a and a rod-like support portion 14 b that is formed integrally with the main body portion 14 a and protrudes into the spring 12. The spring base 14 is fixed to the case 7 by fixing means such as caulking pins.

  A damper slider 15, a damper 18, and a damper base 16 are disposed behind the shaft 9 of the case 7. These parts are provided to brake a part of the retracting operation of the arm 5 and to mitigate an impact when the door 2 is closed.

  The damper slider 15 includes a horizontally long box-shaped main body 15a and a connecting portion 15b formed integrally with the main body 15a. The space in the main body 15a is partitioned into a plurality of accommodation spaces by, for example, a cross-shaped partition wall. A plurality of dampers 18 are arranged in parallel in the plurality of housing spaces. A long hole 15b1 that is long in the left-right direction is formed in the connecting portion 15b. The second pin 32 is rotatably and slidably fitted in the long hole 15b1.

  The damper 18 is a linear damper. The number of dampers 18 is four, but is not limited. The damper 18 is sandwiched between the damper base 16 and the damper slider 15 to generate a braking force.

  The damper base 16 has a substantially rectangular parallelepiped shape, and is fixed to the case 7 by fixing means such as a caulking pin. A groove 16 a extending in the length direction of the case 7 is formed in the damper base 16. A damper adjusting block 17 for adjusting the position of the damper 18 is fitted in the groove 16a. In this embodiment, the number of damper adjustment blocks 17 is 1, and the position of one damper 18 is adjusted.

  As shown in FIG. 7, serrated irregularities 41 are formed on the upper wall surface of the groove 16 a of the damper base 16. On the upper surface of the damper adjustment block 17, serrated irregularities 42 are also formed. The case 7 is formed with a long hole 7a2 through which the screw 19 passes and slides. A screw hole into which the screw 19 is screwed is formed in the damper adjustment block 17. When the screw 19 is tightened, the unevenness 41 of the damper base 16 and the unevenness 42 of the damper adjustment block 17 mesh with each other, and the damper adjustment block 17 is fixed to the damper base 16. When the screw 19 is loosened, the unevenness 41 of the damper base 16 and the unevenness 42 of the damper adjustment block 17 are disengaged, and the position of the damper adjustment block 17 in the front-rear direction can be adjusted. By adjusting the position of the damper adjustment block 17, the position of the damper 18 is adjusted. FIG. 8A, FIG. 8B, and FIG. 8C show examples in which the position of the damper 18 is adjusted in three stages. 8A is an example in which the braking force of the damper 18 is the weakest, FIG. 8B is an example in which the braking force of the damper 18 is intermediate, and FIG. 8C is the largest braking force of the damper 18. It is an example. As shown in FIG. 4, a damper return spring 35 that biases the damper 18 toward the damper adjustment block 17 is provided between the damper slider 15 and the damper 18.

  FIG. 9 shows a receiving seat 51 fixed to the frame 3. The receiving seat 51 includes a rectangular plate-shaped washer 52 fixed to the frame 3 and a receiving shaft 6 provided at the center of the washer 52. The washer 52 is fixed to the frame 3 by fixing means such as screws. The washer 52 is covered with a decorative plate 53. The position in the front-rear and left-right directions of the receiving shaft 6 with respect to the washer 52 can be adjusted by a position adjusting mechanism. Since the structure of the seat 51 is publicly known, further detailed explanation is omitted.

  FIG. 10 shows an operation diagram of the retracting device 1 when the arm 5 rotates from the retracted position to the retracted position. As shown in FIG. 10A, one end of the link 23 is rotatably connected to the arm 5 via the first pin 31, and the other end of the link 23 is rotated to the slider 11 via the third pin 33. Connected as possible. For this reason, the rotation of the arm 5 and the movement of the slider 11 are interlocked. When the arm 5 is in the retracted position, an urging force in the left direction in the drawing acts on the slider 11 from the spring 12. Further, a force in the right direction in the figure acts on the slider 11 from the link 23. Since the link 23 is inclined with respect to the length direction of the case 7, a force P <b> 1 (side pressure) that pushes the side wall of the case 7 downward acts on the slider 11 by the resultant force of these forces.

  As shown in FIG. 10B, a lateral pressure acts on the case 7 until the link 23 is parallel to the length direction of the case 7. When the link 23 is parallel to the length direction of the case 7, no side pressure is applied to the case 7, and thereafter the direction of the side pressure is switched.

  As shown in FIG. 10 (c), the thought point of the link 23 is when the shaft 9, the first pin 31, and the third pin 33 are aligned. As shown in FIGS. 10A and 10B, the spring 12 applies a rotational force in the retracting direction to the arm 5 until the link 23 reaches the thought point. When the link 23 exceeds the thought point, the spring 12 gives the arm 5 a rotational force in the pull-out direction. This rotational force assists the opening and closing operation of the door 2 by hand.

  When the link 23 is at the ideal point, the slider 11 has a force P2 (side pressure) that pushes the side wall of the case 7 upward by the resultant force of the urging force from the spring 12 and the force from the link 23 on the arm 5 side. work.

  As shown in FIG. 10 (d), when the arm 5 is in the pulled-out position, the slider 11 is applied to the slider 11 by the resultant force of the urging force from the spring 12 and the force from the link 23 on the arm 5 side. A force P3 (side pressure) that pushes the side wall upward works.

  As shown in FIG. 10 (d), the damper slider 15 is rotatably and slidably connected to the arm 5 via the second pin 32. While the arm 5 rotates from the pulled-out position shown in FIG. 10 (d) to the retracted position shown in FIG. 10 (a), the damper slider 15 slides in the left direction in the figure. When the damper slider 15 moves to the left by a predetermined amount or more, the damper 18 is activated, and a part of the retracting operation of the arm 5 is braked. Thereby, the door 2 comes to close slowly.

  According to this embodiment, the following effects can be obtained. Since the case opening 8 is arranged on the back side of the case 7 with respect to the shaft 9, it is possible to prevent the rigidity on the near side of the case 7 from being lowered by the case opening 8. Therefore, even when a force is generated on the slider 11 to press the side walls 7b, 7c of the case 7, it is possible to prevent the case 7 having a U-shaped cross section from being deformed.

  Further, since the damper 18 that hardly generates a force to push the side walls 7b and 7c of the case 7 is disposed on the back side of the case 7, it is possible to prevent the back side of the case 7 having the case opening 8 from being deformed.

  Furthermore, since the guide body 13 having a closed cross section is fixed to the case 7 and the slider 11 is configured to move the guide body 13, it is possible to further prevent the case 7 having a U-shaped cross section from being deformed.

  Note that the present invention is not limited to the embodiment described above, and can be modified to various embodiments without departing from the gist of the present invention.

  In the above embodiment, a link is interposed between the arm and the slider. However, a cam surface can be formed on the arm and the slider so that the arm and the slider can be brought into direct contact with each other.

  In the above embodiment, the retracting device is attached to the door and the receiving seat is attached to the frame. However, the receiving seat can be attached to the door and the retracting device can be attached to the frame.

  This specification is based on Japanese Patent Application No. 2017-019260 for which it applied on February 6, 2017. All this content is included here.

DESCRIPTION OF SYMBOLS 1 ... Retraction apparatus 5 ... Arm 7 ... Case 8 ... Case opening part 9 ... The axis | shaft 11 used as the center of rotation of an arm ... Slider 12 ... Spring 13 ... Guide body 18 ... Damper

Claims (3)

A U-shaped case,
An arm rotatably supported between a position pulled out to the case and a retracted position;
A slider that moves in the length direction of the case in conjunction with the arm;
A retracting device comprising: a spring that biases the slider so that at least a rotational force in the retracting direction acts on the arm;
The slider and the spring are arranged on one side in the length direction of the case from the axis serving as the center of rotation of the arm,
A retracting device that arranges a case opening for accommodating the arm on the other side in the length direction of the case with respect to the shaft. The retractor is
A damper for braking at least a part of the retracting operation of the arm;
The retractor according to claim 1, wherein the damper is disposed on the other side of the case. The retractor is
A guide body fixed to the one side of the case and having a closed cross section;
The retractor according to claim 1, wherein the slider moves in the guide body.

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