JP5150208B2 - Door opening and closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening/closing device which prevents occurrence of a shock when a door moves to a closed position or an open position. <P>SOLUTION: According to the structure of the door opening/closing device, a first cylinder 43 is provided with a damper mechanism which has a cylinder 12a and a rod (not shown) entering/leaving the cylinder 12a. When the cylinder 12a and the rod carry out relative movement so that the rod enters the cylinder 12a, the damper mechanism inhibits the cylinder and the damper from moving at a high speed but forces the same to move at a low speed. Specifically when the door 3 carries out closing movement to a location that is immediately before the closed position by a predetermined distance, the cylinder 12a abuts on a first abutting portion 41a of a casing side mounting member 41, and controls the door 3 so as to move to the closed position at a low speed. When the door 3 carries out opening movement to a location that is immediately before the open position by a predetermined distance, the cylinder 12a abuts on a second abutting portion of a second link 44, and controls the door 3 so as to move to the open position at a low speed. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a door opening and closing device used for furniture having a door such as a cabinet or a hanging cabinet.

  Generally, this type of door opening and closing device includes a housing side mounting member attached to the housing and a door side mounting member attached to the door that opens and closes the opening of the housing, as described in Patent Document 1 below. Each base end portion is connected to the housing side mounting member so as to be rotatable, and each distal end portion includes first and second links rotatably connected to the door side mounting member. The first and second links rotate to move the door between the closed position and the open position.

JP 2005-133330 A

  In the door opening and closing apparatus, the closed position of the door is determined when the door hits the front surface of the casing, and the open position of the door is determined when the first link hits the casing. For this reason, every time the door moves to the closed position or the open position, there is a problem that an impact or an impact sound is generated due to a collision.

  Therefore, the inventor of the present application provides a damper mechanism between the housing and the door and between the housing and the first link, and when the door rotates from the open position side to the closed position, The shock and impact sound that occur when rotating from the position side to the open position are alleviated. However, when two damper mechanisms are provided, there arises a problem that the manufacturing cost increases.

In order to solve the above problems, the present invention provides a housing-side mounting member that is attached to the housing, a door-side mounting member that is attached to a door that opens and closes the opening of the housing, The door is pivotally connected to the housing-side mounting member, and the front end of each door is pivotally connected to the door-side mounting member, so that the door is closed and the opening is closed. In the door opening and closing device provided with the first and second links that move between the open position where the part is opened, any of the housing side mounting member, the door side mounting member, the first link, and the second link One of the three members other than the member provided with the damper is provided with a damper, and the door is moved from the open position side to the closed position side to determine the predetermined position of the closed position. When reaching a distance, it hits the damper A first abutting portion is provided to reduce a moving speed to the closed position of the door at a low speed by hitting, and the door is closed to any one of the three members other than the member provided with the damper. A second abutting portion is provided that moves from the position side to the open position side and hits the damper when the predetermined distance of the open position is reached and suppresses the moving speed to the open position of the door at a low speed. It is characterized by that.
In this case, it is desirable that the damper is provided on the first link, the first contact portion is provided on the housing-side mounting member, and the second contact portion is provided on the second link.

  According to the present invention having the above-described characteristic configuration, the closing movement speed in the vicinity of the closed position of the door and the opening movement speed in the vicinity of the opening position can be suppressed to a low speed by the damper. Therefore, it is possible to mitigate the impact and impact sound that occur when the door reaches the closed position or the open position. Moreover, since the closing movement speed and the opening movement speed can be suppressed to a low speed with only one damper, it is possible to prevent an increase in manufacturing cost.

The best mode for carrying out the present invention will be described below with reference to the drawings.
The attached FIGS. 1 to 12 show the storage device 1. As shown in FIGS. 1 to 6, the storage device 1 includes a housing 2, a door 3, and a door opening / closing device 4 according to the present invention.

  The casing 2 has a rectangular parallelepiped box shape that is vertically long, and an opening 2b is formed on the front surface 2a thereof. The door 3 has a flat plate shape, and the left and right widths and the upper and lower lengths thereof are substantially the same as the width and length of the front surface 2 a of the housing 2. The door 3 is connected to the housing 2 via a door opening / closing device 4 so as to be movable between a closed position shown in FIG. 1 and an open position shown in FIG. When the door 3 is in the closed position, as shown in FIG. 1, the door 3 stands up and down along the front surface 2 a of the housing 2, and the rear surface 3 a is connected to the front surface 2 a of the housing 2. The opening 2b of the housing 2 is closed by making it face each other. When the door 3 is located at the open position, as shown in FIG. 5, the entire door 3 is located on the upper end side (one end side) from the center in the vertical direction of the housing 2. Thereby, the door 3 is opening the opening part 2b below it (other end side). Moreover, when the door 3 is located at the open position, the door 3 is inclined so as to be separated forward from the front surface 2a as it goes from the lower end side to the upper end side of the housing 2.

  The door opening / closing device 4 is for moving the door 3 from the closed position to the open position as described above, and one door opening / closing device 4 is provided between the left and right sides of the housing 2 and the door 3. Since the two door opening and closing devices 4 and 4 provided on the left and right are configured symmetrically, only one door opening and closing device will be described. The door opening / closing device 4 includes a housing side mounting member 41, a door side mounting member 42, a first link 43 and a second link 44.

  The housing side attachment member 41 is made of a metal plate, and is attached to either the left or right inner surface of the housing 2 at a location close to the opening 2b.

  One end of the first and second links 43 and 44 (hereinafter referred to as a base end, and the other end of the first and second links 43 and 44 is referred to as a distal end) of the housing side mounting member 41. The first and second rotation shafts 45 and 46 are horizontally connected with their axis lines in the left-right direction so as to be rotatable. The distal ends of the first and second links 43 and 44 rotate through the third and fourth rotation shafts 47 and 48 that are parallel to the first and second rotation shafts 45 and 46 with respect to the door-side mounting member 42. Connected as possible. Accordingly, the four-link mechanism R is configured by the housing side mounting member 41, the door side mounting member 42, and the first and second links 43 and 44. Needless to say, the four-bar linkage mechanism R uses a case-side attachment member 41 fixed to the case 2 as a fixed system.

  The door-side attachment member 42 is detachably attached to the back surface 3 a of the door 3 via the connector 6. The connecting device 6 is a known device used for this kind of door opening and closing device, slide hinge, and the like, and since it is not the gist of the present invention, its detailed description is omitted, but the mounting position of the door side mounting member 42 with respect to the door is omitted. Can be finely adjusted in the up / down / left / right and front / rear directions. Thereby, the position of the door 3 in the vertical and horizontal directions and the front and rear direction with respect to the housing 2 can be finely adjusted.

  A gas spring 7 is provided between the housing side attachment member 41 and the first link 43. One end of the gas spring 7 is rotatably connected to the housing side mounting member 41 via a shaft 49 parallel to the first rotation shaft 45. The other end of the gas spring 7 is rotatably connected to the movable member 8 provided on the first link 43 via a shaft 50 parallel to the shaft 49. The gas spring 7 rotates the first link 43 in the clockwise direction in FIG. 1 when the door 3 is located between the closed position and a predetermined neutral position moved to the open position by a predetermined distance therefrom. The door 3 is biased from the open position side to the closed position side. Moreover, between the closed position and the neutral position, the door 3 tends to move from the open position side to the closed position side by its own weight. Therefore, when the door 3 is positioned between the closed position and the neutral position, the door 3 automatically moves to the closed position.

  When the door 3 is positioned at the neutral position, the shafts 49 and 50 and the first rotation shaft 45 are aligned on a straight line. For this reason, the urging force of the gas spring 7 does not act on the first link 43 as a rotating urging force. When the door 3 crosses the neutral position from the closed position side toward the open position side, the gas spring 7 urges the first link 43 to rotate counterclockwise in FIG. 2 and pushes the door 3 toward the open position side. Rush. Here, the urging force of the gas spring 7 that urges the door 3 toward the open position closes the door 3 by its own weight until the door 3 reaches a predetermined equilibrium position from the neutral position toward the open position. Weaker than the force to move to the position side. Therefore, it is necessary to manually move the door 3 to the open position side until the equilibrium position. On the other hand, when the door 3 exceeds the equilibrium position from the closed position side to the open position side, the urging force of the gas spring 7 that urges the door 3 to the open position side is stronger than the force toward the closed position side by the dead weight of the door 3. Become. Therefore, when the door 3 exceeds the equilibrium position, it automatically moves to the open position.

  The position of the movable member 8 can be adjusted in the direction connecting the first rotation shaft 45 and the shaft 50, and by adjusting the position of the movable member 8, the gas spring 7 can be rotated with respect to the first link 43. The urging force for urging the door 3 from the closed position side to the open position side can be adjusted by adjusting the urging force.

  The gas spring 7 may be provided between the housing side mounting member 41 and the second link 44. Further, instead of the gas spring 7, other urging means such as a tension coil spring or a compression coil spring may be used.

  As shown in FIG. 9, both ends of the reinforcing plate 9 are attached to the first rotation shaft 45 and the second rotation shaft 46, respectively. The frame-side mounting member 41 is reinforced by the reinforcing plate 9. As shown in FIG. 11, the decorative cover 10 is attached to the housing-side attachment member 41. The mounting cover 10 shields the housing side mounting member 41, the base ends of the first and second links 43 and 44, the gas spring 7 and the reinforcing plate 9 from the outside as much as possible.

  A positioning member 31 is provided at the lower end of the door 3. The positioning member 31 abuts against a stopper (not shown) provided in the housing 2 when the door 3 moves from the open position side to the closed position. Thereby, the closed position of the door 3 is determined. On the other hand, as shown in FIG. 5, the positioning member 31 abuts against the second link 44 when the door 3 moves from the closed position side to the open position. Thereby, the open position of the door 3 is determined.

  The positioning member 31 may be provided on any one of the housing side mounting member 41, the door side mounting member 42, the first link 43, and the second link 44. In that case, when the positioning member 31 hits any one of the remaining three of the housing side mounting member 41, the door side mounting member 42, the first link 43 and the second link 44, the door 3 is closed. The position is determined, and the open position of the door 3 is determined by hitting the other two. When the positioning member 31 is provided in the door opening / closing device 4, the moving distance of the door 3 can be known in advance only by the door opening / closing device 4, that is, before the door opening / closing device is provided between the housing 2 and the door 3. it can.

  As shown in FIG. 12, a bracket 11 is fixed to the first link 43, and a damper mechanism (damper) 12 is provided on the bracket 11. The damper mechanism 12 includes a cylinder 12a, and a rod 12b in which a base end portion is accommodated in the cylinder 12a so as to be movable in the axial direction, and a distal end portion protrudes from the cylinder 12a. The damper mechanism 12 has a function of suppressing the moving speed to a low speed when the rod 12b moves relative to the cylinder 12a. The rod 12b relatively moved so as to enter the cylinder 12a is returned to the original initial position by a biasing means such as a coil spring provided in the cylinder mechanism 12. Instead of the damper mechanism 12, another known damper mechanism may be used.

  The cylinder 12a of the damper mechanism 12 is provided on the bracket 11 so as to be movable in the axial direction. On the other hand, the position of the rod 12b is fixed to the bracket 11. Therefore, in the damper mechanism 12, the cylinder 12a actually moves relative to the rod 12b. As shown in FIG. 1, when the door 3 moves from the open position side to the closed position side and reaches a position a short distance from the closed position, the cylinder 12 a is attached to the housing side mounting member 41. It hits the contact part 41a. As a result, the cylinder 12a moves so that the rod 12b relatively enters the cylinder 12a. Therefore, the moving speed of the door 3 toward the closed position is suppressed to a low speed until the door 3 reaches the closed position after the cylinder 12a hits the first contact portion 41a. Therefore, the positioning member 31 does not collide with the stopper of the housing 2 at a high speed, and the occurrence of an impact due to the collision can be prevented. Further, as shown in FIG. 4, when the door 3 moves from the closed position side to the open position side and reaches a position that is a predetermined distance from the open position, the cylinder 12 a is provided in the second link 44. It abuts against the contact portion 44a (see FIGS. 7 to 10). As a result, the cylinder 12a moves so that the rod 12b relatively enters the cylinder 12a. Therefore, until the door 3 reaches the open position after the cylinder 12a hits the second contact portion 44a, the moving speed of the door 3 toward the open position is suppressed to a low speed. Therefore, the positioning member 31 does not collide with the second link 44 at a high speed, and the occurrence of an impact due to the collision can be prevented.

  The damper mechanism 12 may be provided on any one of the housing side attachment member 41, the door side attachment member 42, and the second link 44 without being provided on the first link 43. In that case, the remaining two of the housing side mounting member 41, the door side mounting member 42, and the second link 44 and the three members of the first link 43 (three members other than the member provided with the damper) The first contact portion is provided in one of the two members, and the second contact portion is provided in one of the remaining two members (two members other than the two members each provided with the damper mechanism and the first contact portion). Provide. Further, any one of the three members other than the member provided with the damper mechanism is provided with a damper mechanism in any one of the housing side attachment member 41, the door side attachment member 42, the first link 43, and the second link 44. It is also possible to provide the first and second contact portions as one. For example, when a damper mechanism is provided on the second link 44, as is apparent from FIGS. 1 and 5, the first link 43 can be provided with first and second contact portions. In this case, it is also possible to design the first contact portion to be used as the second contact portion.

  Further, the damper mechanism 12 may fix the cylinder 12a to the bracket 11 and abut the rod 12b against the first and second contact portions 41a and 44a.

  The four-bar linkage mechanism R including the housing side attachment member 41, the door side attachment member 42, the first link 43, and the second link 44 has the following configuration. That is, the first rotation shaft 45 is disposed above the second rotation shaft 46, and the third rotation shaft 47 is positioned above the fourth rotation shaft 48 regardless of the position of the door 3. Are arranged as follows. Accordingly, the first link 43 is always positioned above the second link 44 regardless of the position of the door 3. In addition, the first and second rotation shafts 45 and 46 are disposed on the upper end side from the center in the vertical direction of the housing 2, and the third and fourth rotation shafts 47 and 48 are located at the closed position. The door 3 is disposed below the center in the vertical direction. Accordingly, the distance between the first rotation shaft 45 and the third rotation shaft 47 and the distance between the second rotation shaft 46 and the fourth rotation shaft 48 are shortened, and the door 3 is moved. When the door 3 is in the open position, the lower end of the door 3 can be positioned as high as possible.

Further, in the four-bar linkage mechanism R, the third rotation shaft 47 is always positioned above the fourth rotation shaft 48 and the third rotation shaft 47 while the door 3 moves from the closed position to the open position. Is configured to satisfy the condition that it largely moves forward from the fourth rotation shaft 48. In order to satisfy such conditions, a four-bar linkage mechanism excluding parallel links is employed as the four-bar linkage mechanism R. That is, as shown in FIG. 1, the center-to-center distance between the first rotation shaft 45 and the second rotation shaft 46 is the first inter-axis distance L1, and the first rotation shaft 45 and the third rotation shaft. The center-to-center distance between the second rotation shaft 46 and the fourth rotation shaft 48 is the third center-to-axis distance L3. When the center-to-center distance between the shaft 47 and the fourth rotating shaft 48 is the fourth inter-axis distance L4,
L1 ≠ L4
L2 ≠ L3
The first to fourth inter-axis distances L1 to L4 are determined so as to satisfy any of the following.

Furthermore, in this embodiment, the four-bar linkage mechanism R is configured to satisfy the following conditions.
L1> L4
L2> L3
L1 + L2> L3 + L4
Moreover, the distances L2 and L3 between the second and third axes are set to be larger than the distances L1 and L4 between the first and fourth axes. Further, when the door 3 is located at the closed position, the distance between the first and second rotation shafts 45 and 46 in the front-rear direction and the vertical direction is the front and rear of the third and fourth rotation shafts 47 and 48, respectively. It is longer than the distance in the direction and the vertical direction. Further, when the door 3 is in the closed position, the first rotation shaft 45 is located slightly behind the third rotation shaft 47 and the second rotation shaft 46 is slightly behind the fourth rotation shaft 48. Is located.

  When the door 3 is connected to the housing 2 by the door opening / closing device 4 having the above-described configuration, as shown in FIGS. 1 to 6, the third operation is performed as the door 3 moves from the closed position toward the open position. It moves forward more than the moving shaft 47 and the fourth rotating shaft 48. In other words, the distance in the front-rear direction between the third rotation shaft 47 and the fourth rotation shaft 48 increases as the door 3 moves from the closed position to the open position. Accordingly, the door 3 is inclined so as to be separated from the front surface 2a of the housing 2 forward as it moves from the lower end side to the upper end side of the housing 2 as it rotates from the closed position to the open position side. .

  When the door 3 further moves to the open position side and reaches a predetermined intermediate position shown in FIG. 4, the second, fourth, and third rotating shafts 46, 48, 47 are aligned in a straight line. While the door 3 moves from the closed position to the intermediate position, the upper end of the door 3 moves upward while moving forward. However, after that, when the door 3 further moves to the open position side, the fourth rotation shaft 48 is positioned closer to the first rotation shaft 45 than the line connecting the second rotation shaft 46 and the third rotation shaft 47. Thus, the upper end of the door 3 moves downward while moving forward as the door 3 moves toward the open position. As a result, the increase rate of the inclination angle of the door 3 with respect to the fixed rotation angle of the first and second links 43 and 44 is increased. Therefore, the inclination angle of the door 3 when the door 3 reaches the open position can be increased.

  When the door 3 moves from the closed position side to the vicinity of the open position, the door 3 tends to move to the open position side at high speed due to its own weight and the biasing force of the gas spring 7. However, when the door 3 reaches a position in front of the opening position by a predetermined distance, the cylinder 12a hits the second contact portion 44a of the second link 44 as shown in FIG. Thereby, the approaching movement speed of the 1st and 2nd link 44 is restrained to low speed, and those rotational speeds are restrained to low speed. As a result, the moving speed of the door 3 toward the open position side can be suppressed to a low speed.

  The door 3 that has moved to the open position can be returned to the closed position in the reverse procedure. Here, when the door 3 moves to the vicinity of the closed position, it tends to move to the closed position at a high speed by its own weight and the urging force of the gas spring 7. However, when the door 3 reaches a position in front of the closed position by a predetermined distance, the cylinder 12a comes into contact with the first contact portion 41a of the housing side mounting member 41 as shown in FIG. Thereby, the rotational speed of the 1st link 43 is suppressed to low speed, and the moving speed to the closed position side of the door 3 is also suppressed to low speed by extension.

In addition, this invention is not limited to said embodiment, In the range which does not deviate from the summary, it can change suitably.
For example, in the above embodiment, the first inter-axis distance L1 and the fourth inter-axis distance L2 are set to be different from each other, and the second inter-axis distance L2 and the third inter-axis distance L3 are different from each other. Although the distance is set, the distances may be set to the same distance. That is, a parallel link mechanism may be used instead of the four-bar link mechanism R.
Moreover, as a damper, it may replace with the damper mechanism 12 and may use the damper which consists of a single member. For example, a member made of an elastic material such as a coil spring or rubber can be used as the damper.

It is side sectional drawing which shows the accommodating apparatus with which the door opening / closing apparatus which concerns on this invention was used in the state which the door located in the closed position. It is a partially omitted side sectional view showing the same accommodation device in a state where two rotation shafts of the second link are located at the same height. It is a partially omitted side sectional view showing the same accommodation device in a state where two rotation shafts of the first link are located at the same height. It is a partially omitted side sectional view showing the accommodation device in a state where a second link is located at a thought point. It is a sectional side view which shows the same accommodation apparatus in the state in which the door was located in the open position. It is a sectional side view which shows the movement to which the door moves from the closed position to the open position. It is a perspective view which shows the door opening / closing apparatus which concerns on this invention. It is a perspective view which shows the door opening / closing apparatus in the state which removed the connection tool. It is a perspective view which shows the door opening / closing apparatus in the state which removed the cover. It is a perspective view shown in the state which decomposed | disassembled the housing side attachment member, the 1st link, and the 2nd link of the door opening / closing apparatus. It is a perspective view shown in the state which decomposed | disassembled the reinforcement member and cover of the door opening / closing apparatus. It is a disassembled perspective view which shows the 1st link and damper of the door opening / closing apparatus.

Explanation of symbols

2 Housing 2b Opening 3 Door 4 Door Opening / Closing Device 12 Damper Mechanism (Damper)
41 Housing side attachment member 41a First contact portion 42 Door side attachment member 43 First link 44 Second link 44a Second contact portion

Claims (2)

A housing-side mounting member attached to the housing, a door-side mounting member attached to a door that opens and closes the opening of the housing, and respective base end portions are rotatably connected to the housing-side mounting member. The front end of each door is pivotally connected to the door-side mounting member, whereby the door is moved between a closed position where the opening is closed and an open position where the opening is open. 1. In a door opening and closing device provided with a second link,
A damper is provided on any one of the housing side mounting member, the door side mounting member, the first link, and the second link, and any one of three members other than the member provided with the damper. Furthermore, when the door moves from the open position side to the closed position side and reaches a position closer to the close position than the closed position, the door is abutted against the damper, thereby suppressing the moving speed to the closed position of the door at a low speed. A first abutting portion is provided, and the door is moved from the closed position side to the open position side to any one of three members other than the member provided with the damper. A door opening and closing device comprising a second abutting portion that comes into contact with the damper and reaches a low opening speed when the distance reaches a short distance. The said damper is provided in the said 1st link, the said 1st contact part is provided in the said housing | casing side attachment member, The said 2nd contact part is provided in the said 2nd link, It is characterized by the above-mentioned. The door opening and closing device according to 1.

Images