JP2017161094A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of improving sealability of a decompression chamber.SOLUTION: A decompression chamber 13 includes: a housing case formed with an opening part on its front face; a decompression chamber lid 16 configured to open/close the opening part; a packing 16p configured to seal between an edge part of the opening part and the decompression chamber lid; and an operation lever 25 configured to rotate in a circular arc manner to lock the decompression chamber lid 16 to the housing case. The operation lever 25 has a rod body 27 extending to both sides of the housing case, and the rod bod y27 comprises a member whose at least a circumferential part has flat surfaces 27a1, 27b1, and 27c1 along an axial direction of the rod body.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a refrigerator.

  Some refrigerators are provided with a chilled chamber (decompression chamber) that reduces the freshness of food by reducing oxygen around the food and suppressing oxidation. Such a chilled chamber is provided with an operating lever that pivots up and down in a circular arc shape and a packing on the edge of the lid. By pushing down the operating lever, the lid is locked via the packing so that the chilled chamber is sealed. (For example, refer to Patent Document 1).

JP 2009-36453 A

  However, since the refrigerator described in Patent Document 1 has a structure in which the lid is locked on both the left and right sides, the operation lever is bent at the time of locking, and there is a possibility that the tightness of the chilled chamber may be lowered due to a decrease in packing adhesion. .

  An object of the present invention is to provide a refrigerator capable of improving the sealing performance of a decompression chamber.

  The present invention is a refrigerator comprising a storage chamber and a decompression chamber that is installed in the storage chamber and depressurizes to a pressure lower than the atmospheric pressure, wherein the decompression chamber includes a storage portion in which an opening is formed on the front surface, A lid that opens and closes the opening; a seal member that seals between the edge of the opening and the lid; and an operation lever that pivots in an arc to lock the lid to the storage. The operation lever includes a rod body extending on both sides of the housing portion, and the rod body is configured by a member having at least a part in a circumferential direction having a flat surface along the axial direction of the rod body. It is characterized by being.

  ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which can improve the sealing performance of a decompression chamber can be provided.

It is the perspective view which looked at the refrigerator of 1st Embodiment from the front. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a perspective view which shows the decompression chamber where the decompression chamber lid is locked. It is a perspective view which shows the decompression chamber of a decompression chamber lid | cover open state. It is a front view which shows a decompression chamber schematically. The packing attached to a decompression chamber cover is shown, (a) is a front view, (b) is a top view. It is CC sectional view taken on the line of FIG. It is sectional drawing which shows the state which the decompression chamber cover opened. It is sectional drawing which shows the state before a decompression chamber cover closes and locks. It is sectional drawing which shows the state where the decompression chamber cover was locked. It is a side view which shows the state before an operation lever locks. It is a side view which shows the state in which the operation lever is locking. It is a side view in which an operation lever shows a locked state. The force relationship in a lock maintenance state is shown, (a) is this embodiment, (b) is a comparative example. It is a longitudinal cross-sectional view which shows the decompression chamber of 2nd Embodiment. It is a longitudinal cross-sectional view which shows the decompression chamber of 3rd Embodiment. It is sectional drawing of the operation lever which shows the modification of 1st Embodiment.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 is a perspective view of the refrigerator of the present embodiment as viewed from the front, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 1, a refrigerator 1 to which the present invention is applied has a refrigeration room (storage room) 2 which is a storage room having a refrigeration temperature zone of about 6 ° C. at the top and a refrigeration temperature zone of about 6 ° C. at the bottom. A vegetable room 5 which is a storage room is arranged. Between the refrigerating room 2 and the vegetable room 5, a freezing room having a freezing temperature zone of 0 ° C. or less (for example, a temperature zone of about −20 ° C. to −18 ° C.) that is adiabatically partitioned from both the rooms. An ice making room 3a, a quick freezing room 3b, and a freezing room 4 are partitioned and arranged by partition walls k1, k2, and k3 (see FIG. 2), respectively.

  The refrigerator 1 is provided with doors 6, 7, 8, 9, and 10 having a heat insulating structure for closing front openings of the refrigerator compartment 2, the ice making compartment 3 a, the quick freeze compartment 3 b, the freezer compartment 4, and the vegetable compartment 5. Yes. The outer peripheral casing portion excluding the doors 6 to 10 includes a urethane foam heat insulating material and a vacuum heat insulating material (not shown) for heat insulation from the outside air between the steel plate outer box 11 and the resin inner box. It is configured.

  In the refrigerator 1, the refrigeration cycle for performing refrigeration and refrigeration is configured in such a manner that a compressor, a condenser, a capillary tube, an evaporator serving as a cooling source that takes away the heat of vaporization of the refrigerant, and a compressor are connected again in this order. ing.

  The evaporator serving as a cooling source is installed behind the freezing rooms 3 and 4, and the cool air of the evaporator is sent to the ice making room 3 a, the quick freezing room 3 b, and the freezing room 4 by a blower fan. Moreover, cold air is sent to each storage room of the refrigerator compartment 2 and the vegetable compartment 5 through the damper apparatus which can be opened and closed when it becomes below refrigeration temperature. The cold air has a cold air circulation structure that is circulated after each storage chamber is cooled, and the refrigerator compartment 2, the ice making compartment 3a, the quick freeze compartment 3b, the freezer compartment 4 and the vegetable compartment 5 have temperature sensors. It is maintained at a predetermined temperature by temperature control by the control device used.

  As shown in FIG. 2, a decompression chamber 13 is provided in the refrigerator compartment 2 of the refrigerator 1. The decompression chamber 13 is located at the lowermost part of the refrigerator compartment 2, and the inside is cooled by indirect cooling. The decompression chamber 13 includes a decompression chamber lid (lid) 16 on the front surface and an operation lever 25 that is operated when the decompression chamber lid 16 is locked.

  As shown in FIG. 3, the storage case (storage section) 14 is formed in a substantially rectangular shape by left and right side plates 14a and 14b, a bottom plate 14c, a back plate 14d and an upper plate 14e (see FIG. 4).

  The decompression chamber 13 is a gas control chamber in which the internal air is sucked by the vacuum pump 12 and decompressed to 0.7 atm (70 kPa) or the like lower than the atmospheric pressure, thereby preventing food oxidation and maintaining the freshness of vegetables. A special air atmosphere is fostered.

  When the refrigerator compartment door 6b is closed, a predetermined space is formed between the door storage 6b1 of the refrigerator compartment door 6b and the decompression chamber lid 16 of the decompression chamber 13 so as not to contact each other.

FIG. 4 is a perspective view showing the decompression chamber with the decompression chamber lid locked, and FIG. 5 is a perspective view showing the decompression chamber with the decompression chamber lid open.
As shown in FIG. 4, the decompression chamber 13 includes a storage case 14 (storage portion), a decompression chamber lid 16 (lid), and an operation lever 25 that is operated when the decompression chamber lid 16 is locked to the storage case 14. , And is configured.

  The storage case 14 has a flat shape that is elongated in the left and right directions, and an opening 14r (see FIG. 5) is formed on the front surface (front side). In addition, reinforcing ribs that increase the section modulus and improve the strength are erected on the storage case 14 in a lattice shape or the like.

  A lid lock guide groove member 30 is provided on the side surface 14 a of the storage case 14. Although not shown, a similar lid lock guide groove member is also provided on the side plate 14b opposite to the side surface 14a of the storage case 14.

  The decompression chamber lid 16 has a substantially rectangular shape covering the entire opening 14r (see FIG. 5) of the storage case 14, and a rectangular recess 16a is formed at the center in the left-right direction. Further, the decompression chamber lid 16 is formed with curved surfaces 16b, 16b whose surfaces are arcuately convex toward the front of the left and right sides of the recess 16a. Further, the decompression chamber lid 16 has slit-like notches 16c and 16d formed at both ends in the left-right direction (width direction), through which both ends of the operation lever 25 are inserted to guide the operation lever 25 in the up-down direction.

  The operation lever 25 includes a handle portion 26 provided at the center in the left-right direction (width direction), a rod body 27 held by the handle portion 26, and support plates 28 fixed to both ends of the rod body 27 (see FIG. 6). ).

  A part of the handle portion 26 is housed in the recessed portion 16a of the decompression chamber lid 16, and is supported rotatably. The handle portion 26 is formed with a support shaft 35s (see FIG. 6) that protrudes in the left-right direction (width direction), and the handle portion 26 rotates in an arc shape in the up-down direction.

  The rod body 27 is inserted into the handle portion 26 and attached to the handle portion 26 so that a part (one surface) of the rod body 27 is exposed from the handle portion 26. The rod body 27 is made of, for example, an aluminum alloy, and is formed by extrusion molding. Further, the rod body 27 is composed of one bar material from one end to the other end of the decompression chamber lid 16.

  Resin caps 29 are fixed to both ends of the rod 27 by screws 29a together with a support plate 28 (see FIG. 6).

  As shown in FIG. 5, a tray 17 stored in the storage case 14 is provided on the back surface of the decompression chamber lid 16. The tray 17 has a shape having an opening 17s on the upper surface by left and right side plates 17a and 17b, a bottom plate 17c, a back plate 17d (see FIG. 9), and a front plate 17e (see FIG. 9). FIG. 5 shows a state in which the operation lever 25 is flipped upward and the lock is released.

  In addition, a square frame-shaped edge portion 14m with which a packing (seal member) 16p (see FIG. 6) provided in the decompression chamber lid 16 abuts is formed around the opening portion 14r of the storage case 14.

FIG. 6 is a front view schematically showing the decompression chamber. FIG. 6 shows a state where the decompression chamber lid 16 is locked.
As shown in FIG. 6, the handle portion 26 is a portion that is gripped and operated by a user's hand, has a substantially rectangular shape when viewed from the front, and is disposed at the center in the left-right direction of the decompression chamber lid 16. The rod body 27 extends linearly so as to have substantially the same length as the left and right widths of the decompression chamber lid 16, passes through the handle portion 26, and extends equally from the left and right ends of the handle portion 26 in the left-right direction.

  A differential pressure relief valve V (valve) is provided on the back side (back side) of the handle portion 26. Further, the handle portion 26 is provided with a valve opening / closing member 35 for opening / closing the differential pressure relief valve V. The valve opening / closing member 35 has support shafts 35 s at both left and right ends, and is provided to be rotatable about the support shaft 35 s with respect to the decompression chamber lid 16.

  Further, on the back side (back side) of the handle portion 26, an urging member 26s formed of a torsion coil spring or the like that urges the handle portion 26 upward when the operation lever 25 is unlocked is provided. It has been.

  On the back surface of the decompression chamber lid 16, a rectangular frame-shaped packing 16 p (seal member) is provided along the periphery of the decompression chamber lid 16.

FIG. 7 shows the packing attached to the decompression chamber lid, where (a) is a front view and (b) is a plan view.
As shown in FIG. 7A, the packing 16p has a rectangular frame shape and an elongated shape in the left-right direction. In other words, the packing 16p has a shape along the edge of the decompression chamber lid 16 (see FIG. 6).

  As shown in FIG. 7B, a groove 16u is formed in the packing 16p along the circumferential direction (entire circumference). Further, the packing 16p is configured such that the thickness in the front-rear direction (opening / closing direction of the decompression chamber lid 16) increases from the left and right sides toward the left and right center. Further, the packing 16p is configured so that the thickness in the front-rear direction is constant at the center in the left-right direction.

  That is, the packing 16p is configured such that the thickness in the front-rear direction is the thinnest at the left and right ends 16p1. The packing 16p is formed so that the thickness gradually increases from the left and right end portions 16p1 toward the center in the left-right direction, and the thickness is increased at positions 16p2 and 16p2 corresponding to the left and right ends of the handle portion 26 (see FIG. 6). Configured to maximize. Further, the thickness of the packing 16p corresponding to the handle portion 26 is constant, and is configured to have a maximum thickness from one position 16p2 to the other position 16p2.

  Further, in the groove 16u of the packing 16p, a gas vent groove 16p3 (gas vent portion) is formed at a plurality of locations. Note that the gas vent groove 16p3 is not limited to the number and shape of the present embodiment as long as the groove 16u is not attached and the sealing property can be secured. Further, the gas vent groove 16p3 may be increased as the left and right widths of the decompression chamber lid 16 become longer.

8 is a cross-sectional view taken along the line CC of FIG.
As shown in FIG. 8, the rod 27 has a curved line connecting three straight portions 27a, 27b, and 27c and a straight portion 27a and a straight portion 27b in a sectional view (a sectional view in a direction orthogonal to the axial direction). It has a substantially trapezoidal shape including a portion 27d, a curved portion 27e connecting the straight portion 27b and the straight portion 27c, and a curved portion 27f connecting the straight portion 27c and the straight portion 27a. That is, the rod 27 has flat surfaces 27a1, 27b1, and 27c1 because the straight portions 27a, 27b, and 27c are formed along the axial direction G (see FIG. 4). The flat surfaces 27a1, 27b1, and 27c1 are not limited to strictly flat surfaces, and may be flat surfaces even if they are surfaces that can be recognized as flat surfaces, even if they are surfaces that include some curvature. Shall be included.

  The handle portion 26 is formed with a groove portion 26 a having a shape for holding the rod body 27. The groove 26a has a contact surface 26a1 with which the straight portions 27b and 27c, a part of the curved portion 27d, and the curved portion 27e abut in a cross-sectional view (a cross-sectional view in a direction orthogonal to the axial direction). As described above, the handle portion 26 is configured not to have a cylindrical shape covering the entire periphery of the rod body 27 but to expose the linear portion 27a, a part of the curved portion 27d, and the curved portion 27f of the rod body 27.

  Further, a protrusion 26b is formed in the groove portion 26a toward the straight portion 27c. The protrusions 26b are formed at both ends of the handle portion 26, for example (see FIG. 6). On the other hand, in the rod 27, a concave portion 27c2 into which the projection 26b is fitted is formed in a linear portion 27c facing the projection 26b. Since the rod body 27 is formed by extrusion molding and the recess 27c2 is formed in a groove shape along the axial direction G (see FIG. 6), the rod body 27 is inserted from the side surface side of the handle portion 26 and slides. By doing so, the rod body 27 can be attached to the handle portion 26. The rod body 27 is configured to operate integrally with the handle portion 26.

9 is a sectional view showing a state where the decompression chamber lid is opened, FIG. 10 is a sectional view showing a state before the decompression chamber lid is closed and locked, and FIG. 11 shows a state where the decompression chamber lid is locked. It is sectional drawing.
9 to 11 show a state seen from the left side of the decompression chamber 13.
As shown in FIG. 9, a differential pressure relief hole 16 s communicating with the inside of the storage case 14 of the differential pressure relief valve V is provided in the recess 16 a of the decompression chamber lid 16. A valve seat 16z is formed around the differential pressure release hole 16s.

  Here, when the operation lever 25 rotates about the support shaft 35s, the differential pressure release valve V opens and closes the differential pressure release hole 16s in conjunction with the operation of the operation lever 25.

  A rack gear 17k is formed on the bottom surface of the bottom plate 17c of the tray 17 along the front-rear direction. Further, a stopper 17m for restricting the drawer of the tray 17 is formed on the lower surface of the bottom plate 17c. The rack gear 17k and the stopper 17m are formed on both the left and right sides of the bottom surface of the bottom plate 17c.

  Further, a guide member 17g is formed on the side plate 17a of the tray 17 at the outer rear end. The guide member 17g is supported by guide rails 14s formed on the inner wall surface of the side plate 14b of the storage case 14. Since the guide member 17g is in contact with the lower surface of the guide rail 14s, the tray 1 is configured not to bow even when the tray 17 is pulled out.

  A pinion gear 15a meshing with the rack gear 17k is rotatably supported on the bottom plate 14c of the storage case 14. The left and right pinion gears 15a are connected by a shaft 15b and rotate synchronously. The pinion gear 15a is disposed in a recess 14w formed in the bottom plate 14c, and a part of the pinion gear 15a is exposed from the upper surface of the bottom plate 14c and meshes with the rack gear 17k.

  Further, the side plate 14b of the storage case 14 is formed with a regulation protrusion 14v that the stopper 17m abuts to regulate the withdrawal of the tray 17. The length of the guide rail 14s in the front-rear direction is set so that the guide member 17g does not come off the guide rail 14s when the stopper 17m comes into contact with the restricting protrusion 14v.

  As shown in FIG. 9, when the decompression chamber lid 16 is unlocked, the tray 17 can be pulled out together with the decompression chamber lid 16. When the tray 17 is pulled out, the rack gear 17k is pulled out while meshing with the pinion gear 15a. In addition, the guide member 17g slides while sliding on the lower surface of the guide rail 14s, and the stopper 17m comes into contact with the restricting protrusion 14v, so that the operation of pulling out the tray 17 is restricted.

  When the operation lever 25 is lifted upward, the operation lever 25 rotates in the clockwise direction on the paper with the support shaft 35s as a fulcrum, so that the differential pressure release valve V is separated from the valve seat 16z and the differential pressure release hole. Get out of 16s.

  When the decompression chamber lid 16 is pressed from the state shown in FIG. 9 and the tray 17 is accommodated in the storage case 14, the packing 16 p provided on the decompression chamber lid 16 is attached to the edge of the storage case 14 as shown in FIG. 10. It contacts the part 14m. At this time, the meshing state of the rack gear 17k and the pinion gear 15a is released, and the tray 17 stops just before the back plate 17d of the tray 17 comes into contact with the inner wall surface of the back plate 14d of the storage case 14.

  When the operation lever 25 is rotated counterclockwise from the state shown in FIG. 10 with the support shaft 35s as a fulcrum, the differential pressure release valve V is moved to the valve seat 16z of the differential pressure release hole 16s as shown in FIG. Contact. The packing 16p of the decompression chamber lid 16 is further pressed toward the edge portion 14m by the operating force when the operating lever 25 is pushed in at this time, and the gap between the decompression chamber lid 16 and the storage case 14 is sealed. In this state, the decompression chamber 13 is decompressed to a predetermined pressure by the vacuum pump 12.

  When the decompression chamber lid 16 is released from the locked state shown in FIG. 11, the differential pressure release valve V is used to release the differential pressure by rotating the operating lever 25 clockwise with respect to the support shaft 35s as a fulcrum. As shown by a thick arrow in FIG. 10, the decompression chamber is opened when the decompression chamber lid 16 is opened by the outside air entering the decompression chamber 13 decompressed by the pressure difference and the pressure difference being eliminated. The load due to the differential pressure applied to the lid 16 is eliminated, and the decompression chamber lid 16 can be opened smoothly.

12 is a side view showing a state before the operation lever is locked, FIG. 13 is a side view showing a state in which the operation lever is being locked, and FIG. 14 is a side view showing the operation lever in a locked state.
As shown in FIG. 12, the lock mechanism R of the operating lever 25 includes a support shaft 16 g, a guide roller 28 r, and a lid lock guide groove member 30. Since the left lock mechanism has the same configuration as the right lock mechanism R, the right lock mechanism R will be described, and the description of the left lock mechanism will be omitted. Further, in FIG. 12 to FIG. 14, in order to make the operation easy to understand, the notch hole 16 c through which the support plate 28 is inserted is illustrated in a simplified manner.

  The support plate 28 fixed to the end of the operation lever 25 has a shape bent in a dogleg shape (boomerang shape) with the support shaft 16g as a fulcrum. The support shaft 16g is provided on the side surface of the decompression chamber lid 16, and supports the operation lever 25 (support plate 28) so as to rotate in an arc shape. A guide roller 28r is rotatably supported on the support plate 28. The guide roller 28r is provided at the end of the support shaft 16g opposite to the rod 27. The support shaft 16g is configured to be coaxial with the support shaft 35s.

  The lid lock guide groove member 30 is, for example, a resin-molded member, and guides the guide roller 28r by contacting the curved inner wall guide 30a in a side view. The inner wall guide 30a is formed in the following shape in a side view.

That is, let c be the dimension between the intersection point 30a1 of the straight inner wall guide 30a connecting the support shaft 16g and the shaft center of the guide roller 28r and the support shaft 16g when the decompression chamber lid 16 is unlocked by the operation lever 25. Further, as shown in FIG. 13, between the support shaft 16g and the intersection 30a2 of the straight inner wall guide 30a connecting the support shaft 16g before the decompression chamber lid 16 is locked by the operation lever 25 and the shaft center of the guide roller 28r. Let dimension be b. Further, as shown in FIG. 14, between the support shaft 16g and the intersection 30a3 of the straight inner wall guide 30a connecting the support shaft 16g and the shaft center of the guide roller 28r when the decompression chamber lid 16 is locked by the operation lever 25. If the dimension is a, the distance between a, b and c is
b (state before locking (FIG. 13))> a (locked state (FIG. 14))> c (unlocked state (FIG. 12))
The shape of the inner wall guide 30a shown in FIGS. 12, 13, and 14 is formed in a side view.

  Due to the shape of the inner wall guide 30a of the lid lock guide groove member 30, a straight line connecting the support shaft 16g and the axis of the guide roller 28r in a state before the decompression chamber lid 16 is locked by the operation lever 25 shown in FIG. Since the dimension between the intersection 30a2 with the inner wall guide 30a and the support shaft 16g is the largest, b, the guide roller 28r of the support plate 28 is connected to the inner wall guide 30a of the lid lock guide groove member 30 as shown in FIG. The inner wall guide 30a is formed so as to strongly abut or twist and give a heavy feeling to the user who opens and closes the operation lever 25 supported by the support plate 28, and locks after giving a click feeling. Thus, the decompression chamber lid 16 is attracted to the storage case 14, and the packing 16p is strongly pressed against the edge portion 14m of the opening 14r, so that the sealing performance between the decompression chamber lid 16 and the storage case 14 is ensured. .

That is, when the user grasps the handle portion 26 of the operation lever 25 and pushes the handle portion 26 of the operation lever 25 downward from the state before the lock in FIG. 13 to reach the lock state shown in FIG.
b (state before locking (FIG. 13))> a (locking state (FIG. 14))
From this relationship, the guide roller 28r of the support plate 28 in the neutral state softens the inner wall guide 30a of the lid lock guide groove member 30, that is, the degree to which the guide roller 28r strongly contacts the inner wall guide 30a is softened. In the operation of shifting the operation lever 25 to the lock, the operation lever 25 is configured to give a feeling of being pulled from the state before the lock to the lock state.

  Then, when the user grasps the handle portion 26 of the operation lever 25 and lifts the rod 27 of the operation lever 25 upward from the state before the lock shown in FIG. 13 to reach the unlocked state shown in FIG. The dimension between the intersection of the straight inner wall guide 30a connecting the supporting shaft 16g and the axis of the guide roller 28r and the supporting shaft 16g is a, the state before the lock (see FIG. 13), and the locked state (see FIG. 14). ), The guide roller 28r of the support plate 28 is closed by the lid lock guide groove member 30 during the period from the state shown in FIG. 13 to the open state shown in FIG. The inner wall guide 30a is formed so that the opening / closing handle portion 26 can be operated with a gentle feel without contacting the inner wall guide 30a.

  FIG. 15 shows the force relationship in the lock maintenance state, (a) is the present embodiment, and (b) is a comparative example. In addition, in a comparative example, about the structure similar to this embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. The comparative example is different from the present embodiment in that the operation lever 100 includes the rod body 101.

  By the way, as shown in FIG. 15B, when the rod 101 has a circular cross-sectional view, a force relationship indicated by an arrow is obtained when the operation lever 100 is in a locked state. That is, when the operating lever 100 is pushed down with the locking force F10, the rod body 101 acts on the decompression chamber lid 16 with the locking force F11. In addition, since the decompression chamber lid 16 is locked at both left and right ends, and the rod body 101 is circular in cross section, the sectional moment is reduced, the reaction force F14 received by the rod body 101 is increased, and the rod body 101 The amount of deflection Q10 increases. Further, the movement amounts Q11 and Q12 by which the packing 16p is pushed back are also increased by the elastic repulsive force received from the packing 16p. Since the operation lever 100 is pushed down, the packing F located on the upper side presses the edge 14m1 of the storage case 14, and the packing 16p positioned on the lower side is the edge of the storage case 14. Since it becomes smaller than the force F13 that presses the portion 14m2, the sealing performance at the packing 16p located on the upper side is lowered.

  Therefore, in the present embodiment, as shown in FIG. 15 (a), the rod 27 has a shape so as to have straight portions 27a, 27b, 27c (flat surfaces 27a1, 27b1, 27c1, see FIG. 8) in a sectional view. By changing, the bending amount Q1 of the rod 27 is made smaller than that of the comparative example shown in FIG. That is, when the operating lever 25 is pushed down with the locking force F <b> 1, the locking force F <b> 2 acts on the bar 27 on the decompression chamber lid 16. Further, since the decompression chamber lid 16 is locked at both left and right ends, and the rod body 27 has a shape having flat surfaces 27a1, 27b1, 27c1 (see FIG. 8), the cross-sectional secondary moment is larger than that of the comparative example, The reaction force F3 received by the rod 27 is reduced, and the deflection amount Q1 of the rod 27 is reduced as compared with the comparative example (Q10). Further, the amount of movement Q2 and Q3 by which the packing 16p is pushed back is also reduced by the elastic repulsive force received from the packing 16p. Therefore, the force F4 that the packing 16p located on the upper side presses the edge 14m1 of the storage case 14 has the same pressing force as the force F5 that the packing 16p located on the lower side presses the edge 14m2 of the storage case 14, It can suppress that the sealing performance in packing 16p located in the upper side falls.

  As described above, in the refrigerator 1 of the first embodiment, the decompression chamber 13 includes the storage case 14 having the opening 14r formed on the front surface, the decompression chamber lid 16 that opens and closes the opening 14r, and the edge of the opening 14r. A seal 16p that seals between the portion 14m and the decompression chamber lid 16, and an operation lever 25 that rotates in an arc shape and locks the decompression chamber lid 16 to the storage case 14. The rod body 27 extends on both sides of the case 14, and the rod body 27 has flat surfaces 27a1, 27b1, and 27c1 (at least part of the circumferential direction is formed along the axial direction G of the rod body 27). doing. According to this, since the bending amount Q1 when the operation lever 25 is locked can be reduced (see FIG. 15A), the decompression chamber lid 16 can be strongly pressed by the operation lever 25, and the decompression chamber lid 16 and the storage can be accommodated. The sealing property between the case 14 and the case 14 can be improved as compared with the conventional case.

  Further, in the first embodiment, the operating lever 25 has a handle portion 26 formed with a groove portion 26a that rotates in an arc shape and holds the rod body 27, and the projection 26b formed in the groove portion 26a has a rod body. The rod 27 is fixed to the handle portion 26 by fitting with the concave portion 27c2 formed in the rod 27 (see FIG. 8). According to this, since the handle | steering-wheel part 26 and the rod 27 can be operated integrally, operativity can be improved.

  In the first embodiment, the case where the protrusion 26b is formed in the groove 26a and the recess 27c2 is formed in the rod 27 has been described as an example, but conversely, the recess 26c is formed in the groove 26a. The protrusion (protrusion part) may be formed in 27, and the structure which fits a recessed part and a protrusion may be sufficient. Further, the number of the protrusions 26b is not limited to two (see FIG. 6), and may be one or three or more.

  In the first embodiment, when the operation lever 25 is locked, the flat surface 27a1 of the rod 27 faces the front (front side) (the flat surface 27a1 is oriented along the vertical direction). As a result, the forward protrusion of the decompression chamber 13 can be suppressed. Thereby, the decompression chamber 13 can be reduced in size and the space of the door storage 6b1 provided in the refrigerator compartment door 6b (refer FIG. 3) can be expanded.

(Second Embodiment)
FIG. 16 is a longitudinal sectional view showing a decompression chamber of the second embodiment. The second embodiment is the first embodiment in that the protrusion 26b of the groove 26a and the recess 27c2 of the rod 27 are not provided, and the rotation center of the handle 26A and the rotation center of the rod 27A are different. It is different from the form. About another structure, it is the same as that of 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. In the following second embodiment, the rod body 27 having the flat surfaces 27a1, 27b1, and 27c1 will be described as an example. However, a rod body having a circular cross-sectional view may be used.

  As shown in FIG. 16, the operation lever 25A includes a handle portion 26A and a rod body 27A. The handle portion 26A has a groove portion 26a shaped to hold the rod body 27A. The handle portion 26A rotates around the support shaft 35s (the rotation shaft of the handle portion), and the rod 27A rotates around the support shaft 16h (the rotation shaft of the rod). Yes. As described above, the rotation center of the handle portion 26A is different from the rotation center of the rod body 27A.

  Thus, in 2nd Embodiment, while providing the groove part 26a of the shape which inserts the rod body 27A, and the groove part 26a and the rod body 27A are comprised so that contact / separation is possible, the handle | steering-wheel part 26A is set to a locked position. Even in this case, the rod 27A can be further rotated in the direction in which the handle portion 26A is pressed. That is, the last push of the rod body 27A can be performed, and the sealing performance between the decompression chamber lid 16 and the storage case 14 can be improved.

  Moreover, in 2nd Embodiment, even if the handle | steering-wheel part 26A becomes a locked position by making the rotation locus | trajectory of the handle | steering-wheel part 26A and the rotation locus | trajectory (refer to a dashed-two dotted line) of the rod 27A differ, It is possible to further rotate the body 27A in the direction in which the handle portion 26A is pressed more strongly than in the case of the same rotation locus. That is, the last push of the rod body 27A can be performed, and the sealing performance between the decompression chamber lid 16 and the storage case 14 can be further improved.

(Third embodiment)
FIG. 17 is a longitudinal sectional view showing a decompression chamber of the third embodiment. The refrigerator of the third embodiment is a bar 27B instead of the bar 27 of the first embodiment. Other configurations are the same as those in the first embodiment, and the same reference numerals are given and redundant descriptions are omitted.
As shown in FIG. 17, the operation lever 25B includes a handle portion 26B and a rod body 27B. The rod body 27B has an elliptical shape in cross-sectional view (circular cross-sectional view). The handle portion 26B has a groove portion 26c shaped to hold the rod body 27B. The groove part 26c accommodates an area larger than the half cross-sectional area of the ellipse, and is configured such that the length L1 of the opening 26c1 is shorter than the short side L2.

  In the third embodiment, the decompression chamber 13 includes a storage case 14 in which an opening 14r is formed, a decompression chamber lid 16 that opens and closes the opening 14r, and an edge 14m of the opening 14r and the decompression chamber lid 16. And a control lever 25B that rotates in a circular arc shape to lock the decompression chamber lid 16 to the storage case 14, and the control lever 25B has rod bodies 27B that extend on both sides of the storage case 14. And the rod body 27B is configured by a member having an elliptical shape in a sectional view. According to this, compared with the rod body 101 having a circular section view (see FIG. 15B), the operation lever 25B provided with the rod body 27B having an elliptical section view has a larger section than the rod body having a circular section view. The cross-sectional secondary moment can be increased, and the amount of deflection (Q1) when the operation lever 25B is locked can be reduced as in the first embodiment. Accordingly, the decompression chamber lid 16 can be strongly pressed by the operation lever 25B, and the sealing performance between the decompression chamber lid 16 and the storage case 14 can be improved.

  In the third embodiment, the groove 26c of the handle portion 26B accommodates an area larger than one half of the cross-sectional area of the rod 27B in a cross-sectional view, and the length L1 of the opening 26c1 is shorter than the short side L2 of the ellipse. Further, the rod 27B can be held without being separated into the groove 26c without forming a shape for fitting the groove 26c and the rod 27B.

  The orientation of the ellipse of the rod 27B attached to the handle portion 26B is an example, and can be changed as appropriate. For example, when the operation lever 25B is locked, the protrusion of the front from the decompression chamber lid 16 can be suppressed by making the long side of the ellipse face in the vertical direction.

(Modification of the first embodiment)
FIG. 18 is a cross-sectional view showing a modification of the first embodiment. In FIG. 18, a part of the operation levers 25 </ b> C and 25 </ b> D is illustrated, and other configurations are the same as those in the first embodiment.
As shown in FIG. 18A, the operation lever 25C includes a handle portion 26C and a rod body 27C. The rod body 27C has a quadrangular shape in cross section, and is composed of four straight portions (a part of the circumferential direction is a flat surface at least partially along the axial direction of the rod body 27C). The handle portion 26C is formed with a groove portion 26d having a shape into which the rod body 27C is added. The groove 26d is a rectangular recess and is configured to expose one side of the rod body 27C. Further, the groove portion 26d and the rod body 27C are fitted by projections and recesses so that the rod body 27C does not come out of the groove portion 26d.

As shown in FIG. 18B, the operation lever 25D includes a handle portion 26D and a rod body 27D. The rod body 27D has a triangular shape in cross section, and includes three straight portions (a part of the circumferential direction is a flat surface at least partially along the axial direction of the rod body 27D). The handle portion 26D is formed with a groove portion 26e having a shape into which the rod body 27D is added. The groove part 26e has a substantially triangular shape in cross section, and is configured to be exposed to a part so as to come into contact with the two sides of the rod body 27D and to wrap around the remaining one side. The direction of the rod 27D has been described by taking the case where the hypotenuse is facing forward and downward as shown in FIG. 18 (b), but may be arranged so that the hypotenuse is facing forward and upward. You may arrange | position downward and back upward, and can change suitably.
Further, the rod 27D is not limited to a right-angled triangle in sectional view, and may be a triangle other than a right-angled triangle.

  In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

1 Refrigerator 2 Cold room (storage room)
13 Decompression chamber (indirect cooling chamber)
14 Storage case (storage part)
14m Edge 14r Opening 16 Decompression chamber lid (lid)
16a hollow part 16b curved surface 16g support shaft 16h support shaft (rotating shaft of rod)
16p packing (seal member)
25, 25A, 25B, 25C, 25D Operation lever 26, 26A, 26B, 26C, 26D Handle portion 26a, 26c, 26d, 26e Groove portion 26b Projection 27, 27A, 27B, 27C, 27D Rod body 27a, 27b, 27c Linear portion 27d, 27e, 27f Curved portion 27a1, 27b1, 27c1 Flat surface 27c2 Recessed portion 28 Support plate 28r Guide roller 29 Cap 29a Screw 30 Lid lock guide groove member 30a Inner side wall guide 35s Support shaft (rotating shaft of handle portion)
R Lock mechanism V Differential pressure release valve

Claims (6)

In a refrigerator provided with a storage chamber and a decompression chamber that is installed in the storage chamber and depressurizes to a pressure lower than atmospheric pressure,
The decompression chamber rotates in a circular arc shape, a storage portion having an opening formed on the front surface, a lid that opens and closes the opening, a seal member that seals between an edge of the opening and the lid, and And an operation lever for locking the lid to the storage portion,
The operation lever has rods extending on both sides of the storage portion,
The refrigerator is characterized in that at least a part of the rod body has a flat surface along the axial direction of the rod body. In a refrigerator provided with a storage chamber and a decompression chamber that is installed in the storage chamber and depressurizes to a pressure lower than atmospheric pressure,
The decompression chamber rotates in a circular arc shape, a storage portion in which an opening is formed, a lid that opens and closes the opening, a seal member that seals between an edge of the opening and the lid, and An operation lever for locking the lid to the storage unit,
The operation lever has rods extending on both sides of the storage portion,
The refrigerator is characterized in that the rod body has an elliptical shape in a sectional view. The operation lever has a handle portion formed with a groove portion that rotates in an arc shape and adds the rod body.
The refrigerator according to claim 1 or 2, wherein the bar is fitted in the groove. In a refrigerator provided with a storage chamber and a decompression chamber that is installed in the storage chamber and depressurizes to a pressure lower than atmospheric pressure,
The decompression chamber rotates in a circular arc shape, a storage portion in which an opening is formed, a lid that opens and closes the opening, a seal member that seals between an edge of the opening and the lid, and An operation lever for locking the lid to the storage unit,
The operation lever includes a rod body extending on both sides of the storage portion, and a handle portion formed with a groove portion that pivots in an arc shape to hold the rod body, and the rod body and the groove portion are in contact with each other. A refrigerator characterized by being separable.   The refrigerator according to claim 4, wherein the rotating shaft of the handle portion and the rotating shaft of the rod body are formed at different positions. In a refrigerator comprising a storage room and an indirect cooling room installed in the storage room,
The indirect cooling chamber includes a storage portion having an opening formed on a front surface, a lid that opens and closes the opening, and an operation lever that rotates in an arc shape to lock the lid to the storage portion. ,
The operation lever includes a rod body extending on both sides of the storage portion, and a handle portion formed with a groove portion that rotates in an arc shape and adds the rod body.
The refrigerator is characterized in that the rod body is fitted in the groove.