JP2015190692A - Refrigerator drawer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator drawer device capable of efficiently reducing a drawing out load in a first stage of drawing out a drawer-type storage container from a refrigerator body, even with low-power door opening assisting means.SOLUTION: In a refrigerator drawer device, low-power door opening assisting means is arranged in a drawer-type storage container or a refrigerator body. By using the door opening assisting means, any one of four corners on the back surface of a door part of the drawer-type storage container or any one of left and right end parts thereof is pushed and moved in an opening direction to make the door part be slightly inclined toward the drawing out direction by utilizing a clearance provided between the drawer-type storage container and the refrigerator body, thereby a sealing member is peeled off from the end part thereof.

Description

  The present invention relates to a refrigerator drawer device, and more particularly, to a refrigerator drawer device provided with an opening assisting means for a drawer-type storage container.

  Patent Document 1 below discloses a door driving device for a drawer door of a refrigerator. In Patent Document 1, in the first stage of opening the drawer door from the refrigerator, the magnetic packing attracting force and the pulling force of the closer mechanism act in addition to the weight of the stored food. In the conventional drawer door release device, there is a problem that a difference occurs in the opening amount of the drawer door due to the difference in the weight of the stored food.

  Patent document 1 has shown embodiment which provided the door drive device 500 in the vegetable compartment 6 provided with a drawer-type door as a solution means of this subject. The door drive device 500 includes a drive transmission member 640 that is transmitted with the rotation of the motor 24 being reduced to about 1/100, and a connecting member 700 that receives the driving force of the drive transmission member 640 and moves the vegetable compartment 6 in the opening and closing direction. And. The connecting member 700 opens and closes the vegetable compartment 6 by moving the left and right door frames 400 in parallel to the drawing direction of the vegetable compartment 6 via the reinforcing member 410 (see FIGS. 2 and 4 of Patent Document 1). .

JP 2009-063217 A

  The door drive device 500 of Patent Document 1 has a mechanism that pushes out the left and right door frames 400 in parallel with the drawing direction of the vegetable compartment 6 when the vegetable compartment 6 is pulled out. When the vegetable compartment 6 is pushed out by such a mechanism, the entire circumference of the magnet packing must be peeled off at the same time, so that a corresponding force is required. For this reason, a high-output pushing means using a motor or a reduction gear, a control means thereof, and the like are required, resulting in a complicated mechanism and an increase in cost.

  In view of the above problems, the problem to be solved by the present invention is that, in the first stage of pulling out the drawer-type storage container from the refrigerator main body, it is possible to efficiently reduce the drawer load even by the low output door opening assisting means. It is an object to provide a refrigerator drawer device.

  In order to solve the above problems, a refrigerator drawer device according to the present invention includes a drawer-type storage container having a door portion, and an opening that pushes the door portion in an opening direction when the drawer-type storage container is pulled out from the refrigerator body. A drawer auxiliary device having a door auxiliary means, wherein the drawer-type storage container in a closed state has an outer peripheral edge of the back of the door portion adsorbed and fixed to the refrigerator main body by a seal member, and the door opening auxiliary means is It is arranged in the drawer-type storage container or the refrigerator main body, and the gist is to push any one of the four corners on the back of the door portion or the left and right end portions in the opening direction.

  When pulling out the drawer-type storage container, by pushing the position offset from the center of the back of the door part in the opening direction, the door part can be moved relative to the drawer direction by the play provided between the drawer-type storage container and the refrigerator body. Slightly tilted and part of the end of the seal member such as the magnet packing is peeled off. Compared with the case where the entire circumference of the seal member is peeled off simultaneously, the force required to peel off only the end thereof may be small. Therefore, the door opening assisting means of the present invention has a low output and a small motor or solenoid. Can be used, and a simple pushing mechanism using an elastic body such as a spring or rubber can be used, which contributes to cost reduction and simplification of the mechanism.

  As a position where the door opening assisting unit presses the back surface of the door portion, any one of the four corners or the left and right end portions is more suitable than the upper and lower end portions other than the corner portions. This is because the vertical tilt of the pull-out storage container is limited by the weight of the food stored in the pull-out storage container.

  When the end of the seal member is peeled off by the opening assisting means, other portions of the seal member can be peeled off with a small chain force, and the drawing load can be reduced efficiently.

  In addition, when the biasing force of an elastic body such as a spring or rubber is used for the power of the door opening assisting means, no electric power is required to drive the door opening assisting means, so the arrangement of the wires in the refrigerator is simplified. In addition, it becomes easy to arrange the door opening assisting means on the drawer-type storage container side, and the design flexibility is improved. In addition, maintenance such as operation confirmation and part replacement in the process inspection becomes easy.

  Further, the door opening assisting means has a door opening lever that is a rotating body whose rotation trajectory overlaps with the rear face of the drawer-type storage container in the closed state or the refrigerator body, and the door opening lever is the drawer. When the door portion is pushed in the opening direction by abutting against the contact portion of the refrigerator-type storage container or the refrigerator body, the door opening lever is rotated when the drawer-type storage container is pulled out from the refrigerator body. It is good also as a mechanism in which the center side contacts the contacted part earlier than the rotating tip side.

  According to the above opening lever, when the drawer-type storage container is pulled out, the distance between the fulcrum and the action point is short, and the rotation center side that exerts high torque peels off the end of the seal member, thereby reducing the pulling load. Later, the turning tip side with a long turning radius can push the drawer-type storage container farther, and the power of the opening assisting means can be used efficiently.

  In addition, the door opening assisting means includes a pair of inclined cam members having a helical engagement surface that mutually converts expansion and contraction movement of the elastic body and rotation movement of the door opening lever. The inclined cam member is fixed to one end of the elastic body and is moved in a linear direction by expansion and contraction of the elastic body, and the inclined cam member is fixed to the rotation center of the door opening lever and integrated with the door opening lever. It is good also as a structure which has an opening lever side cam member rotated in the direction.

  With the above configuration, the urging force of an elastic body such as a spring or rubber can be converted into a rotational movement of the door opening lever with a simple mechanism. In addition, it is preferable to accumulate | store the urging | biasing force of this elastic body by converting the rotational motion of the door opening lever at the time of accommodating a drawer-type storage container in a refrigerator main body.

  Further, the spiral engagement between the opposing surfaces of the elastic-body-side cam member and the door-opening lever-side cam member at the rotation position of the door-opening lever when the drawer-type storage container is in the closed state, respectively. It is preferable that a lock cam that is inclined in a direction opposite to the inclination direction of the surface is formed.

  By forming the lock cam, it is possible to maintain the urging force accumulated in the elastic body such as a spring or rubber without acting in the opening direction of the pull-out type storage container.

  The door opening lever includes a first door opening lever and a second door opening lever that are overlapped in the axial direction with substantially the same rotation center, and the door opening lever side cam member is the first door lever. The first door opening lever and the second door opening lever are fixed to the pivoting center of the door opening lever, and the second door opening lever formed on the first door opening lever projects toward the second door opening lever. The projecting portions are loosely engaged with the substantially triangular engagement holes formed in the second door opening lever, thereby rotating around each other with a certain angular difference in the rotation direction, When pulling out the drawer-type storage container from the refrigerator main body, the first door opening lever comes into contact with the contacted part before the second door opening lever, and the drawer-type storage container is When housed in the refrigerator body, the second door opening lever is ahead of the first door opening lever. The may be configured to abut the abutted portion.

  In this case, the second door opening lever has an oval shaft hole so that it can move in the longitudinal direction of the shaft hole, and the substantially triangular engagement hole moves in the longitudinal direction of the shaft hole. When one of the vertices is arranged and the drawer-type storage container is stored in the refrigerator main body, the second door opening lever is brought into contact with the contacted portion so that the contacted portion of the contacted portion While moving in the opposite direction, the convex portion of the first door opening lever is engaged with the apex of the substantially triangular engagement hole of the second door opening lever, thereby the second door opening lever. It is preferable that the door opening lever and the first door opening lever rotate integrally without causing an angle difference in the rotation direction.

  By adopting the above configuration, the range in which the first opening lever of high torque corresponds to the contacted portion can be minimized, and when the first opening lever accommodates the drawer-type storage container in the refrigerator main body. In the case where an elastic body such as a spring or rubber is used as the power, the urging force of the elastic body can be efficiently accumulated with a small force.

  Moreover, it is preferable that the drawer-type storage container or the refrigerator main body is provided with trigger means for starting the pushing of the rear surface of the door portion by the door opening assisting means.

  As trigger means, when the door opening assist means is an actuator using a motor, solenoid, etc., a method of providing a start button on the refrigerator body, etc. is conceivable, and when the door opening assist means is a mechanism using a spring, rubber, etc. For example, a method may be considered in which a wire is pulled by a lever provided on a handle portion in front of the door portion of the drawer-type storage container, and the engagement by the lock cam of the door opening assisting means is switched to the engagement by the helical engagement surface.

  According to the refrigerator drawer device of the present invention, it is possible to efficiently reduce the drawer load even by the low output door opening assisting means in the first stage of pulling out the drawer-type storage container from the refrigerator body.

It is a perspective view of refrigerator 1 provided with the drawer device for refrigerators in this embodiment. It is explanatory drawing which shows the structure of the door opening assistance means in this embodiment. It is explanatory drawing which shows the structure of the lock cam of a door opening assistance means. It is explanatory drawing which shows operation | movement of the door opening assistance means at the time of pulling out a drawer-type storage container. It is explanatory drawing which shows operation | movement of the door opening assistance means at the time of accommodating a drawer-type storage container.

(overall structure)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a refrigerator 1 including a drawer-type storage container 2 and a door opening assisting means 3 constituting the refrigerator drawer device in the present embodiment. In addition, the upper and lower sides and right and left in the following description shall mean the upper and lower sides and right and left in FIG.

  The drawer-type storage container 2 is stored in a storage chamber 11 provided in the lower stage of the refrigerator 1, and is slidably supported by slide rails 12 provided on the left and right inner wall surfaces of the storage chamber 11. A taper portion (not shown) that is inclined downward in the depth direction is formed at the end of the slide rail 12 on the depth side, and the drawer-type storage container 2 that is closed by the taper portion is attached in the depth direction by its own weight. Be forced.

  The drawer-type storage container 2 includes a door portion 21, and the drawer-type storage container 2 in the closed state is adsorbed and fixed to the opening portion of the storage chamber 11 by a magnet packing whose outer peripheral edge on the back surface of the door portion 21 is a seal member (not shown). Is done.

  The door opening assisting means 3 is arranged at the lower right of the opening of the storage chamber 11 and pushes the lower right corner of the door 21 in the opening direction when pulling out the drawer-type storage container 2.

  When the lower right corner of the door portion 21 is pressed, the door portion 21 is slightly inclined with respect to the pulling direction due to play provided between the pull-out type storage container 2 and the storage chamber 11, and the right side of the magnet packing The lower edge is peeled off. Compared with the case where the entire circumference of the magnet packing is peeled off simultaneously, the force required to peel off only the end of the magnet packing is small. Therefore, the door opening assisting means 3 has a simple pushing force using the urging force of the compression coil spring as power. A dynamic mechanism is used to reduce costs and simplify the mechanism.

  Further, the position of the door portion 21 to which the door opening assisting means 3 is pushed does not necessarily have to be the lower right corner portion, and any one of the four corners or the left and right end portions can obtain the above-described effects. be able to.

(Configuration of door opening assist means)
Next, the structure of the opening assistance means 3 in this embodiment is demonstrated in detail using FIG. 2, FIG. FIG. 2 is an explanatory view showing the structure of the door opening assisting means 3 in this embodiment. FIG. 3 is an explanatory view of the lock cams 3312 and 3322 of the door opening assisting means 3.

  The door opening assisting means 3 is driven by the urging force of the compression coil spring 31 that is an elastic body as power. Since electric power is not required for driving, the arrangement of electric wires in the refrigerator 1 is simplified. Moreover, in this embodiment, although the opening assistance means 3 is arrange | positioned in the storage chamber 11, since it is not necessary to connect an electric wire to the opening assistance means 3, it arrange | positions at the drawer-type storage container 2 side. Is also possible. Further, maintenance such as operation check and part replacement in process inspection is also easier than a mechanism using a motor or solenoid.

  The door opening assisting means 3 includes a door opening lever 32 whose rotation locus overlaps with the door portion 21 in the closed state, and has a spiral shape that mutually converts the expansion and contraction motion of the compression coil spring 31 and the rotation motion of the door opening lever 32. A pair of inclined cam members 33 each having engagement surfaces 3311 and 3321 are provided. The pair of inclined cam members 33 is fixed to one end of the compression coil spring 31 and is fixed to the elastic body side cam member 331 that moves in a linear direction by the expansion and contraction of the compression coil spring 31 and the rotation center portion of the door opening lever 32 to open the door. And an opening lever side cam member 332 that rotates integrally with the lever 32.

  The door opening lever 32 includes a first door opening lever 321 and a second door opening lever 322 that are axially overlapped with the rotation center being substantially the same, and the door opening lever side cam member 332 is the first door opening. The lever 321 is fixed to the center of rotation. Although details will be described later, the first door opening lever 321 and the second door opening lever 322 rotate together with a certain angle difference in the rotation direction.

  The biasing force of the compression coil spring 31 is accumulated by converting the rotational movement of the door opening lever 32 when the pull-out type storage container 2 is stored in the storage chamber 11. As shown in FIG. 3, the opposing surfaces of the elastic body side cam member 331 and the door opening lever side cam member 332 at the rotation position of the door opening lever 32 when the drawer-type storage container 2 is closed are respectively spiraled. The lock cams 3312 and 3322 are formed so as to be inclined in the direction opposite to the inclination direction of the engagement surfaces 3311 and 3321.

  By forming the lock cams 3312 and 3322, the biasing force accumulated in the compression coil spring 31 can be maintained without acting in the opening direction of the pull-out type storage container 2.

  2 and 3 are permeated to show the internal structure of the door opening assisting means 3, but the compression coil spring 31 and the pair of inclined cam members 33 are accommodated in a cylindrical case 34 having a lid. Has been.

(Operation of the door opening assisting means 3)
Next, operation | movement of the door opening assistance means 3 is demonstrated using FIG. 4, FIG. 4 and 5, the second door opening lever 322 is permeated, and the front door side of the drawing is the second door opening lever 322, and the back side of the drawing is the first door opening lever 321.

  First, the operation of the door opening assisting means 3 when the drawer-type storage container 2 is pulled out from the storage chamber 11 will be described in detail with reference to FIG. The first door opening lever 321 and the second door opening lever 322 have a convex portion 3211 that is formed on the first door opening lever 321 and protrudes toward the second door opening lever 322, and the second door opening lever 322. By being loosely fitted and engaged in substantially triangular engagement holes 3221 formed in the structure, it is configured to rotate with a certain angle difference in the rotation direction (see FIG. 4A). ).

  By pulling a lever (not shown) provided on the handle portion 22 (see FIG. 1) in front of the door portion 21 of the drawer-type storage container 2, the first door opening lever 321 is pulled by a wire (not shown), and a pair of inclinations The engagement of the cam member 33 by the lock cams 3312 and 3322 is switched to the engagement by the helical engagement surfaces 3311 and 3321. Then, the elastic body side cam member 331 linearly moves downward by the urging force of the compression coil spring 31 to rotate the elastic body side cam 332. The first door opening lever 321 rotates in conjunction with the rotation of the elastic body side cam 332 and contacts the door portion 21 (see FIG. 4B). Although the detailed mechanism will be described later, here, the second door opening lever 322 has a longitudinal direction of the oval shaft hole, in this case, by the engagement of the convex portion 3211 and the substantially triangular engagement hole 3221. It moves to the rotation tip side.

  Since the first door opening lever 321 and the second door opening lever 322 rotate with a certain angle difference in the rotation direction due to the play of the substantially triangular engagement hole 3221, the drawer-type storage container 2 is stored in the storage chamber 11. The first door opening lever 321 pushes the door 21 at the first stage of pulling out from the bottom, that is, at the stage of peeling off the lower right end of the magnet packing.

  In the first stage of pulling out the drawer-type storage container 2 from the storage chamber 11, in addition to the resistance due to the weight of the stored food, the suction force of the magnet packing and the urging force in the depth direction by the tapered portion are acting. A relatively large force is required. In the first stage, the end of the magnet packing can be efficiently peeled off by using the first door opening lever 321 that has a short distance between the fulcrum and the action point and exhibits high torque (see FIG. 4 (c)).

  After the lower right end of the magnet packing has been peeled off and the load has been reduced, other parts of the magnet packing can also be peeled off with a small chain force, so the second door with a long turning radius The lever 322 pushes the door portion 21 and pushes the pullout storage container 2 farther (see FIG. 4D).

  Next, the operation of the door opening assisting means 3 when the drawer-type storage container 2 is stored in the storage chamber 11 will be described in detail with reference to FIG. As shown in FIG. 5A, the second door opening lever 322 has an oval shaft hole 3222 so that it can move in the longitudinal direction of the shaft hole 3222. The shaft hole 3222 has one of the apexes in the longitudinal direction. Among the apexes of the substantially triangular engagement hole 3221 in FIG. 5A, the apex arranged on the door 21 side is the apex in the longitudinal direction of the shaft hole 3222.

  The second door opening lever 322 abutting on the door portion 21 moving in the storage direction moves in the direction opposite to the abutting portion, and the convex portion 3211 is on the door portion 21 side of the substantially triangular engagement hole 3221. (See FIG. 5B).

  By engaging the convex portion 3211 with the apex of the substantially triangular engagement hole 3221, the second door opening lever 322 and the first door opening lever 321 are integrated with each other without causing an angular difference in the rotation direction. It rotates (see FIG. 5C).

  When the door portion 21 is housed until it is closed, the engagement of the pair of inclined cam members 33 by the spiral engagement surfaces 3311 and 3321 is switched to the engagement by the lock cams 3312 and 3322, and the door opening lever 32. Is finished (see FIG. 5D).

  With the above configuration, when the drawer-type storage container 2 is accommodated, the range in which the high torque first door opening lever 321 corresponds to the door portion 21 can be minimized, and the first door opening lever 321 serves as the drawer-type storage container. 2 is prevented from being stored in the storage chamber 11, and the urging force of the compression coil spring 31 can be efficiently accumulated with a small force.

  In the present embodiment, in the first stage of pulling out the drawer-type storage container 2 from the storage chamber 11, not only the door portion 21 is pushed on the rotation center side of the door opening lever 32 that exhibits high torque, When the drawer-type storage container 2 is accommodated, the load at the time of accommodation is reduced by bringing the rotation tip side of the door opening lever 32 into contact with the door portion 21 as much as possible. However, the load of the opening lever 32 when the drawer-type storage container 2 is accommodated is the inertia force multiplied by the weight of the food stored in the drawer-type storage container 2, the suction force of the magnet packing, and the depth direction due to the taper portion. Reduced by the urging force of Therefore, the mechanism can be further simplified by specializing the opening assisting means 3 for the effect when the drawer-type storage container 2 is opened. Specifically, the opening lever 32 is a single plate member, and the rotation tip side of the plate member is bent or curved to the opposite side of the rotation direction during the opening operation, or a taper is provided. Possible configurations are possible.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator 11 Storage chamber 12 Slide rail 2 Pull-out type storage container 21 Door part 3 Door opening assistance means 31 Compression coil spring 32 Door opening lever 321 First door opening lever 3211 Convex part 322 Second door opening lever 3221 Joint hole 3222 Shaft hole 33 A pair of inclined cam members 331 Elastic body side cam members 332 Door opening lever side cam members 3311, 3321 Spiral engagement surfaces 3312, 3322 Lock cam 34 Case

Claims (8)

A drawer-type storage container having a door, and
When pulling out the drawer-type storage container from the refrigerator body, a door opening auxiliary means for pushing the door portion in the opening direction, and a refrigerator drawer device comprising:
In the closed state of the drawer-type storage container, the outer peripheral edge of the rear surface of the door is adsorbed and fixed to the refrigerator main body by a seal member,
The door opening assisting means is disposed in the drawer-type storage container or the refrigerator main body, and pushes any one of the four corners or the left and right end portions in the opening direction in the door portion rear surface. A refrigerator drawer device.   The refrigerator opening device according to claim 1, wherein the opening assisting means is driven by an urging force of an elastic body. The door opening assisting means has a door opening lever that is a rotating body whose rotating locus overlaps with the rear surface of the drawer-type storage container in the closed state or the refrigerator body, and the door opening lever is the drawer-type storage. Pushing the door in the opening direction by abutting against the contacted portion of the container or the refrigerator body,
2. When pulling out the drawer-type storage container from the refrigerator main body, the rotation center side of the door opening lever abuts on the contacted part before the rotation tip side. Item 3. A refrigerator drawer device according to Item 2. The door opening assisting means has a pair of inclined cam members having a helical engagement surface that mutually converts the expansion and contraction movement of the elastic body and the rotation movement of the door opening lever,
The pair of inclined cam members are fixed to one end of the elastic body and moved in a linear direction by expansion and contraction of the elastic body, and fixed to the rotation center portion of the door opening lever and the door opening The drawer drawer device according to claim 2 or 3, further comprising an opening lever side cam member that rotates integrally with the lever.   Each of the opposing surfaces of the elastic body side cam member and the door opening lever side cam member at the rotation position of the door opening lever when the drawer-type storage container is in the closed state, The drawer device for a refrigerator according to claim 4, wherein a lock cam that is inclined in a direction opposite to the inclination direction is formed. The door opening lever has a first door opening lever and a second door opening lever that are overlapped in the axial direction with substantially the same rotation center,
The door opening lever side cam member is fixed to the rotation center of the first door opening lever,
The first door-opening lever and the second door-opening lever have a convex portion that is formed on the first door-opening lever and protrudes toward the second door-opening lever. By being loosely engaged with the substantially triangular engagement holes formed in the rotation direction, the rotation direction rotates with a certain angle difference in the rotation direction,
When pulling out the drawer-type storage container from the refrigerator main body, the first door opening lever comes into contact with the contacted part before the second door opening lever, and the drawer-type storage container is 6. Any one of claims 3 to 5, wherein the second door opening lever abuts against the contacted portion before the first door opening lever when housed in the refrigerator main body. The refrigerator drawer device according to claim 1. The second door opening lever has an oval shaft hole so that the second door opening lever can be moved in the longitudinal direction of the shaft hole, and the substantially triangular engagement hole has a vertex in the longitudinal direction of the shaft hole. One of the
When the drawer-type storage container is stored in the refrigerator body, the second door opening lever moves in a direction opposite to the contacted portion by contact with the contacted portion, and The convex portion of the first door opening lever is engaged with the apex of the substantially triangular engagement hole of the second door opening lever, so that the second door opening lever and the first door opening lever are engaged. 7. The refrigerator drawer device according to claim 6, wherein the door lever rotates integrally without causing an angle difference in the rotation direction. The trigger type | mold which starts the pushing of the said door part back surface by the said door opening assistance means is provided in the said drawer-type storage container or the said refrigerator main body, The any one of Claims 1-7 characterized by the above-mentioned. The drawer apparatus for refrigerators as described in 2.

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