JP5031640B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator including a storage case that slides.

  In recent years, the size of refrigerators has increased, and the maximum capacity of one storage room tends to increase. As the storage capacity of the storage room increases, the weight of the drawer-type door in which a storage case for storing stored items is integrated with the door also increases. For this reason, a large force is required when opening and closing the drawer-type door, and the slidability of the guide portion for guiding the back-and-forth movement is improved in order to reduce the opening and closing force.

  However, if the storage case with a large weight is closed with force by improving the slidability of the guide portion, a large impact is applied to the refrigerator body. For this reason, there is a problem that noise is generated and durability and quality of the refrigerator are lowered.

  In order to solve the above problem, Patent Documents 1 and 2 disclose refrigerators including a shock absorber that attenuates the moving speed when a storage case integrated with a door is closed. This shock absorber has an oil damper in which a piston is inserted into a cylinder that is sealed with silicon oil. The piston has a sliding member attached to the rear end disposed in the cylinder and sliding with the cylinder, and the front end is connected to the storage case.

  When the storage case moves backward, the oil pressed by the sliding member moves to the front of the sliding member through the gap between the cylinder and the sliding member. Thereby, a load is applied to the piston, and the moving speed of the storage case is attenuated.

JP 2006-266586 A (pages 4-7, FIG. 3) JP 2007-107868 (pages 4 to 12, FIG. 7)

  However, according to the conventional refrigerator described above, the pull-out door has a relatively large shakiness when moved, and thus the seal between the piston and the cylinder front end is easily damaged. For this reason, the sealing performance of the cylinder may be destroyed and oil leakage may occur. Moreover, since it is maintained at about −20 ° C. in the freezer compartment, seal shrinkage and piston frosting occur. As a result, oil leakage may occur due to contraction of the seal. In addition, if the piston is frosted, the seal that slides with the piston may be damaged and oil leakage may occur. Therefore, there has been a problem that the damping force of the shock absorber is lowered by long-term use and the reliability of the refrigerator is low.

  An object of this invention is to provide the refrigerator which can improve reliability.

  In order to achieve the above object, the present invention includes a storage case that is integrally formed with a door that opens and closes a storage chamber and stores stored items, and a guide portion that slides the storage case back and forth in accordance with the opening and closing of the door. And a shock absorber that attenuates the moving speed of the storage case that slides backward, the shock absorber includes a cylinder having an opening at a front end, a packing that slides on the inner surface of the cylinder, and An air damper having a piston coupled to the packing and moving forward and backward integrally with the storage case; and a cap having an insertion hole for loosely fitting the piston and closing the opening; and Outside air is taken into the cylinder from a short distance.

  According to this configuration, the storage case storing the stored item slides back and forth together with the door by the guidance of the guide unit. When the storage case is retracted, the piston of the air damper is retracted, the air in the cylinder is compressed by the packing, and the moving speed of the storage case is attenuated. Outside air flows into and out of the cylinder from between the insertion hole and the piston, and even when the temperature of the storage chamber becomes low, the air pressure is maintained at the same density as the surroundings when the piston is stopped. The piston may be provided integrally with the storage case, or may be connected to the storage case only for a predetermined section.

  According to the present invention, in the refrigerator configured as described above, the packing is made of one or more of silicon rubber, nitrile rubber, ethylene propylene rubber, and chloroprene rubber. According to this structure, the packing has cold resistance and maintains rubber-like elasticity even at −30 ° C.

  According to the present invention, in the refrigerator configured as described above, the storage room is a freezing room.

  Further, the present invention is characterized in that, in the refrigerator having the above-described configuration, the packing is formed in a cup shape having an opening at the rear and an inclined peripheral surface. According to this configuration, when the piston moves forward, the air in the cylinder in front of the packing moves backward between the cylinder and the packing. Thereby, the inclination | tilt angle of the surrounding surface of packing becomes small, and the sliding friction of a cylinder and packing becomes small. When the piston moves backward, the air in the cylinder behind the packing enters the cup-shaped packing. Thereby, the inclination angle of the peripheral surface of the packing is increased, and the sliding friction between the cylinder and the packing is increased.

  In the refrigerator having the above-described configuration, the shaft is rotatably attached to the packing, and angle changing means for changing the inclination angle of the peripheral wall of the packing by rotation of the shaft is provided. . According to this configuration, the shaft is adjusted so that the peripheral wall of the packing is in contact with the inner surface of the piston.

  Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, a plurality of protrusions thinner than the peripheral wall of the packing are provided at the tip of the peripheral wall. According to this configuration, when the piston moves forward, the protrusion extends rearward from the peripheral wall of the packing and is disposed along the inner surface of the cylinder. When the piston moves backward, the protrusion is bent forward with respect to the peripheral wall of the packing and is sandwiched between the peripheral wall of the packing and the cylinder.

  According to the present invention, in the refrigerator configured as described above, a first engagement member attached to the storage case, and a first engagement member coupled to the piston and slidably moved backward are engaged at a second position. An engagement member and an urging means for urging the second engagement member rearward are provided. According to this configuration, when the storage case is retracted to a predetermined position, the first and second engaging members are engaged, and the door is closed together with the storage case by the urging means.

  According to the present invention, in the refrigerator configured as described above, the second engagement member moves up and down relatively with respect to the first engagement member to disengage the first engagement member from the side surface of the storage case. It is characterized in that it is placed on the provided protruding portion and screwed, and an elastic body is provided between the protruding portion and the first engaging member.

  According to this configuration, the first engagement member is screwed and attached via the elastic body onto the projecting portion that projects from the side surface of the storage case. When the storage case is retracted, for example, the second engaging member descends and engages with the first engaging member at a predetermined position, and the first and second engaging members move together. The relative position in the height direction of the first engagement member with respect to the second engagement member is adjusted by rotation of the screw.

  Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, the storage case moves downward at the rear part by guidance of the guide part. According to this configuration, the first and second engaging members are engaged when the storage case is disposed rearward of the predetermined position, and the first and second engaging members are disengaged when disposed in the front. Is done. When the first engaging member is dropped from the second engaging member in the section where the first and second engaging members are engaged, the storing case is lowered by the guide portion when the storing case is arranged at the rear. Thereby, a 1st, 2nd engagement part can be easily returned to an engagement state.

  According to the present invention, since the shock absorber that attenuates the moving speed of the storage case includes the air damper, it is possible to prevent a decrease in attenuation performance and a decrease in aesthetics due to oil leakage. Further, since outside air is taken into the cylinder from between the insertion hole of the cap that closes the front end of the cylinder of the air damper and the piston, the inside of the cylinder is maintained at the same air pressure as the surroundings regardless of the temperature of the storage chamber. For this reason, when air is sealed in the cylinder, it is possible to prevent a decrease in attenuation performance caused by the air contracting due to a temperature drop. Therefore, the reliability of the refrigerator can be improved.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing a part of the refrigerator according to the first embodiment. The refrigerator 1 has a plurality of storage rooms including a freezing room 2 and a vegetable room 3. The freezer compartment 2 and the vegetable compartment 3 have storage cases 4 and 5 for storing stored items, respectively.

  Doors 2 a and 3 a for opening and closing the freezer compartment 2 and the vegetable compartment 3 are formed integrally with the storage cases 4 and 5, respectively, and are drawer-type doors that slide back and forth by the guide 10. The guide part 10 of the freezer compartment 2 and the vegetable compartment 3 becomes the same structure, and the sharing of parts is achieved.

  The guide unit 10 includes a fixed rail 11, a moving rail 12, a fixed roller 13, and a moving roller 14. The fixed rail 11 extends in the front-rear direction and is provided so as to protrude from both side walls of the freezer compartment 2 and the vegetable compartment 3. The moving rail 12 extends in the front-rear direction and is provided so as to protrude from both side walls of the storage cases 4 and 5. The fixed roller 13 is rotatably provided at the front part of both side walls of the freezer compartment 2 and the vegetable compartment 3. The moving roller 14 is rotatably provided at the rear part of both side walls of the storage cases 4 and 5.

  The fixed rail 11 and the movable rail 12 are formed in a U-shaped cross section so that the movable roller 14 and the fixed roller 13 are fitted, respectively. The fixed roller 13 slides on the lower surface of the upper wall of the movable rail 12, and the movable roller 14 slides on the lower surface of the upper wall of the fixed roller 13 to guide the storage cases 4, 5 back and forth.

  In addition, an inclined portion 12 a whose front is inclined upward is formed at the front end of the upper wall of the movable rail 12. At the rear end of the upper wall of the fixed rail 11, a stepped portion 11 a that is lowered rearward is formed. Accordingly, the storage cases 4 and 5 are lowered by a predetermined amount (for example, 2.5 mm) when moved to the back.

  A shock absorber 20 is provided below one of the left and right fixed rails 11. The shock absorbers 20 in the freezer compartment 2 and the vegetable compartment 3 have the same configuration, and the parts are shared. A strike 19 (first engagement member) that engages with a catch 21 (second engagement member, see FIG. 2) of the shock absorber 20 is provided below the moving rail 12.

  FIG. 2 shows a side view of the shock absorber 20 and the strike 19. A protruding portion 16 protrudes from one side wall of the storage cases 4 and 5. The strike 19 is placed on the protruding portion 16 with an elastic body 17 such as a spring washer interposed therebetween, and is fixed by a screw 18. The vertical position of the strike 19 can be adjusted by the amount of rotation of the screw 18. Thereby, as will be described in detail later, the relative position between the strike 19 and the catch 21 that are engaged and disengaged in the vertical direction can be easily determined. The strike 19 is provided with an engaging projection 19a on the upper surface. The upper surface of the engagement protrusion 19a is an inclined surface that is lowered rearward.

  The shock absorber 20 has an angle 26 attached to one side wall of the refrigerator compartment 2 and the vegetable compartment 3. The angle 26 is formed with a cam groove 24 that extends horizontally in the front-rear direction and has a front portion bent upward. Guide pins 22 and 23 that fit into the cam grooves 24 are attached to the catch 21. As a result, the catch 21 moves back and forth along the cam groove 24, and is arranged with its posture changed so that the lower surface faces forward at the front end of the cam groove 24. At this time, the guide pin 22 engages with the cam groove 24 and the position of the catch 21 is maintained.

An engagement groove 21 a that engages with the engagement protrusion 19 a is provided on the lower surface of the catch 21. The front lower portion 21b of the catch 21 is an inclined surface with the rear side lowered. A tension spring 25 (biasing means) for urging the catch 21 rearward is attached to the upper portion of the catch 21.

An air damper 30 is attached to the angle 26, and the front end of the shaft 32 of the air damper 30 is connected to the catch 21 via a ball joint 27. Thereby, the catch 21 becomes rotatable with respect to the shaft 32, and the posture can be easily changed.

FIG. 3 is a side cross-sectional view of the main part of the air damper 30. The air damper 30 has a bottomed cylindrical cylinder 31 having an opening 31a at the front end. The opening 31 a is closed by fitting the cap 33. The cap 33 is provided with an insertion hole 33a through which the shaft 32 is inserted. A screw portion 32 a having a small diameter is provided at the rear end of the shaft 32 inserted through the insertion hole 33 a, and the screw portion 32 a is inserted into the hole portion 34 a of the packing 34. Packing 34 are fixed by being sandwiched between the seat surface of the nut 35 and the threaded portion 32a to be screwed to the screw portion 32 a.

The packing 34 is made of silicone rubber, and is formed in a cup shape having an opening at the rear and an inclined peripheral surface. The circumferential surface of the packing 34 slides with the inner surface of the cylinder 31. When the shaft 32 moves forward, the air in the front of the cylinder 31 moves along the inclined circumferential surface of the packing 34 and moves backward between the packing 34 and the cylinder 31. At this time, the inclination angle of the peripheral surface of the packing 34 is reduced by the air, and the sliding friction between the cylinder 31 and the packing 34 is reduced. For this reason, the load when the shaft 32 advances is reduced.

When the shaft 32 moves rearward, the air at the rear of the cylinder 31 enters the cup-shaped packing 34, and the inclination angle of the peripheral surface of the packing 34 increases. For this reason, the sliding friction between the cylinder 31 and the packing 34 increases, and the load when the shaft 32 moves backward increases.

  As shown in FIG. 2 described above, when the doors 2a and 3a are opened, the catch 21 that is locked to the front end of the cam groove 24 is inclined with the opening side of the locking groove 21a facing forward. When the storage cases 4 and 5 are retracted integrally with the doors 2a and 3a, the rear surface of the engagement protrusion 19a of the strike 19 comes into contact with the rear wall of the locking groove 21a.

  When the storage cases 4 and 5 are further retracted, as shown in FIG. 4, the engaging protrusion 19a and the locking groove 21a are engaged. Then, the cam groove 24 guides the guide pins 22 and 23 and the posture of the catch 21 is changed. As a result, when the guide pins 22 and 23 are arranged horizontally, the catch 21 moves backward together with the strike 19 by the biasing force of the tension spring 25 as shown in FIG. Therefore, after the catch 21 is engaged with the strike 19, the storage cases 4 and 5 are self-closed by the tension spring 25.

When the shaft 32 moves backward together with the catch 21, the load increases because the sliding friction between the cylinder 31 and the packing 34 increases as described above. Thereby, the moving speed of the storage cases 4 and 5 is attenuate | damped, and the impact added to the refrigerator 1 main body is relieve | moderated.

  When the doors 2 a and 3 a are closed and pulled against the urging force of the tension spring 25, the catch 21 advances together with the strike 19. At this time, the sliding friction between the cylinder 31 and the packing 34 is small, and the force pulling the doors 2a and 3a can be reduced. The catch 21 moves forward by the guide of the cam groove 24, and changes its posture at the front end of the cam groove 24 as shown in FIG. Thereafter, the storage cases 4 and 5 are pulled out together with the doors 2a and 3a.

Further, an impact or the like may be applied while the catch 21 is moving horizontally, and the catch 21 and the strike 19 may be disengaged. At this time, the catch 21 is disposed at the rear end of the cam groove 24, and the strike 19 is disposed in front of the catch 21. When the doors 2a and 3a are closed, the strike 19 is lowered downward by a predetermined amount by the inclined portion 12a of the moving rail 12 and the step portion 11a of the fixed rail 11. Further, the upper surface of the engaging protrusion 19a and the lower front surface 21b of the catch 21 are formed by inclined surfaces.

  Thereby, since the engagement protrusion 19a can easily enter the engagement groove 21a, the engagement between the strike 19 and the catch 21 can be easily returned. In addition, since the strike 19 is provided on the elastic body 17, the strike 19 is lowered by coming into contact with the catch 21. Thereby, engagement with the strike 19 and the catch 21 can be returned more easily.

According to this embodiment, since the shock absorber 20 that attenuates the moving speed of the storage cases 4 and 5 includes the air damper 30, it is possible to prevent a decrease in attenuation performance and a decrease in aesthetics due to oil leakage. The shaft 32 is loosely fitted into the insertion hole 33 a of the cap 33 that closes the front end of the cylinder 31 of the air damper 30, and outside air is taken into the cylinder 31 from between the insertion hole 33 a and the piston 32. Thereby, the inside of the cylinder 31 is maintained at the same air pressure as the surroundings regardless of the temperature of the storage chamber. For this reason, when the air is sealed in the cylinder 31, it is possible to prevent a decrease in attenuation performance caused by the air contracting due to a temperature drop. Therefore, the reliability of the refrigerator 1 can be improved.

  Further, since the packing 34 sliding on the cylinder 31 is made of silicon rubber, it has high cold resistance and maintains rubber-like elasticity even at -30 ° C. For this reason, even if it is the refrigerator compartment 2 maintained at about -20 degreeC, the shrinkage | contraction and hardening of the packing 34 can be prevented and the fall of a damping force can be prevented. Nitrile rubber, ethylene propylene rubber, or chloroprene rubber having cold resistance similar to silicon rubber may be used for the packing 34. Further, the packing 34 may be formed by using a plurality of these rubbers in combination.

Further, since the catch 21 (second engagement member) that engages with the strike 19 (first engagement member) at a predetermined position is connected to the shaft 32 and the tension spring 25 (biasing means), the door has a self-closing property. 2a and 3a can be configured easily.

  Next, FIGS. 6 and 7 are a side sectional view and a rear view showing the main part of the air damper 30 of the refrigerator of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in the method of attaching the packing 34. Other parts are the same as those in the first embodiment.

The shaft 32 is provided with a boss portion 32 b that fits into the hole portion 34 a of the packing 34. A screw portion 32a is formed behind the boss portion 32b, and the nut 35 is screwed into the screw portion 32a until it abuts against the boss portion 32b. The boss portion 32 b is formed slightly thicker than the packing 34, and the shaft 32 is rotatable with respect to the packing 34.

On the inner wall of the packing 34, support portions 34b projecting inward are formed at two opposing positions. An adjustment screw 36 is screwed onto the screw portion 32a behind the nut 35. The external shape of the adjusting screw 36 is formed by cutting two opposing portions of the disk in parallel to form a parallel portion 36a, and the parallel portion 36a is fitted between the support portions 34b. Thereby, the adjustment screw 36 is prevented from rotating by the support of the support portion 34b, and the adjustment screw 36 moves back and forth by the rotation of the shaft 32 .

  For this reason, when the piston 31 is rotated to advance the adjustment screw 36, the arc-shaped outer portion of the adjustment screw 36 abuts against the inner wall of the packing 34. When the adjustment screw 36 is further advanced, the packing 34 is elastically deformed and the inclination angle of the peripheral wall is increased. Further, when the adjustment screw 36 is retracted, the inclination angle of the peripheral wall of the packing 34 is reduced.

Therefore, the adjusting screw 36 and the support portion 34 b constitute angle varying means for varying the inclination angle of the peripheral wall of the packing 34 by the rotation of the shaft 32 . Thereby, the contact pressure between the cylinder 31 (see FIG. 3) and the packing 34 can be easily varied.

According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the angle varying means for varying the inclination angle of the peripheral wall of the packing 34 by the rotation of the shaft 32 is provided, the contact pressure between the cylinder 31 and the packing 34 can be varied to easily adjust the damping force of the air damper 30. Can do.

  Next, FIGS. 8 and 9 are a side sectional view and a rear view showing the main part of the air damper 30 of the refrigerator of the third embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, a protrusion 34 c is provided on the periphery of the packing 34. Other parts are the same as those in the first embodiment.

  A plurality of protrusions 34 c are provided at the tip of the peripheral wall of the packing 34. The protrusion 34c is formed to be thinner than the peripheral wall of the packing 34, and the protrusion 34c can be easily bent back and forth with respect to the peripheral wall of the packing 34.

10 and 11 are side sectional views of the air damper 30 and show the state of the packing 34 when the shaft 32 is moved. When the shaft 32 moves forward as indicated by the arrow A, the protrusion 34 c extends rearward from the peripheral wall of the packing 34 and is disposed along the inner surface of the cylinder 31. The air in the front part of the cylinder 31 moves rearward between the packing 34 and the cylinder 31 along the inclined peripheral surface of the packing 34 and the protrusion 34c. At this time, the sliding friction between the cylinder 31 and the packing 34 is kept small.

When the shaft 32 moves backward as indicated by an arrow B, the protrusion 34 c is bent forward with respect to the peripheral wall of the packing 34 and is sandwiched between the peripheral wall of the packing 34 and the cylinder 31. Since the packing 34 has a wide rear portion, the contact pressure between the projection 34 c and the cylinder 31 increases. Thereby, the sliding friction between the cylinder 31 and the packing 34 becomes larger, and the load increases.

According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the load increases when the shaft 32 moves backward by the protrusion 34c, the damping force of the air damper 30 can be increased. Further, since the protrusion 34 c comes into surface contact with the cylinder 31, the contact area between the packing 34 and the cylinder 31 is increased. For this reason, wear of packing 34 can be reduced and reliability can be improved more. In addition, you may provide the same projection part 34c in the packing 34 of the air damper 30 of the refrigerator 1 which concerns on 2nd Embodiment.

  Next, FIG. 12 is a side sectional view showing a main part of the air damper 30 of the refrigerator according to the fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, an annular extending portion 34 d extending along the cylinder 31 is provided on the periphery of the packing 34. Other parts are the same as those in the first embodiment.

When the shaft 32 moves forward, the air in the front portion of the cylinder 31 moves rearward between the packing 34 and the cylinder 31 along the inclined circumferential surface of the packing 34 and the extending portion 34d. At this time, the sliding friction between the cylinder 31 and the packing 34 is kept small.

When the shaft 32 moves backward, the rear part of the packing 34 expands, so that the contact pressure between the extending part 34d and the cylinder 31 increases. Thereby, the sliding friction between the cylinder 31 and the packing 34 becomes larger, and the load increases.

According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the load increases when the shaft 32 is retracted by the extending portion 34d, the damping force of the air damper 30 can be increased. In addition, since the extended portion 34 d is in surface contact with the cylinder 31, the contact area between the packing 34 and the cylinder 31 is increased. For this reason, wear of packing 34 can be reduced and reliability can be improved more. In addition, you may provide the extended part 34d similar to the packing 34 of the air damper 30 of the refrigerator 1 which concerns on 2nd Embodiment.

Next, FIG. 13 is a side sectional view showing a main part of the air damper 30 of the refrigerator of the fifth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In this embodiment, an air chamber 37 through which the shaft 32 passes is provided in front of the packing 34. Other parts are the same as those in the first embodiment.

The air chamber 37 is formed integrally with the packing 34 and has rubber-like elasticity. The air chamber 37 has through holes 37a and 37b through which the shaft 32 is inserted, and communicates with the inside of the packing 34 through the rear through holes 37a. The shaft 32 is provided with a locking portion (not shown) that contacts the periphery of the front through-hole 37b and prevents the packing 34 and the air chamber 37 from coming off. Moreover, the through-hole 37a (communication part) is formed larger than the through-hole 37b (opening part).

When the shaft 32 moves forward as shown by the arrow A, the amount of air that can flow out of the through hole 37b is larger than the amount of air that flows into the air chamber 37 from the through hole 37a. For this reason, the air in the front part of the cylinder 31 moves rearward between the packing 34 and the cylinder 31 along the peripheral surface of the air chamber 37 and the inclined peripheral surface of the packing 34. At this time, the sliding friction between the cylinder 31 and the packing 34 is kept small.

As shown in FIG. 14, when the shaft 32 moves backward in the direction of arrow B, the amount of air flowing into the air chamber 37 from the through hole 37b is larger than the amount of air flowing out of the through hole 37a. Thereby, the surrounding wall of the air chamber 37 expands in a barrel shape, and the contact pressure between the cylinder 31 and the air chamber 37 increases. As a result, the sliding friction between the cylinder 31 and the packing 34 and the air chamber 37 becomes larger, and the load increases.

According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the load increases when the shaft 32 is retracted by the air chamber 37, the damping force of the air damper 30 can be increased. Further, since the contact area between the air chamber 37 and the cylinder 31 is large, the wear of the packing 34 can be reduced and the reliability can be further improved. In addition, chatter noise at the end of the packing 34 can be reduced.

  Instead of the through hole 37a (communication portion), a hole or a groove for communicating the air chamber 37 and the packing 34 may be provided separately. Further, instead of the through hole 37b (opening), a hole through which air flows in and out may be provided in front of the air chamber 37. Moreover, you may provide the same air chamber 37 in the air damper 30 of the refrigerator 1 which concerns on 2nd Embodiment.

  Next, FIG. 15 is a side cross-sectional view showing the main part of the air damper 30 of the refrigerator of the sixth embodiment. For convenience of explanation, the same parts as those in the fourth and fifth embodiments shown in FIGS. 12 to 14 are given the same reference numerals. In the present embodiment, in addition to the fifth embodiment having the air chamber 37, an extended portion 34d similar to the fourth embodiment is provided. Thereby, the same effect as the fourth and fifth embodiments can be obtained.

In the first to sixth embodiments, the piston 32 is connected to the storage containers 4 and 5 in the section where the strike 19 and the catch 21 are engaged, but the shaft 32 is connected to the storage container 4 in the entire moving section of the doors 2a and 3a. 5 may be connected.

  According to this invention, it can utilize for the refrigerator provided with the storage case which slides.

Side surface sectional drawing which shows a part of refrigerator of 1st Embodiment of this invention. The side view which shows the buffer device of the refrigerator of 1st Embodiment of this invention. Side surface sectional drawing which shows the air damper of the buffer device of the refrigerator of 1st Embodiment of this invention The side view which shows operation | movement of the buffer device of the refrigerator of 1st Embodiment of this invention. The side view which shows operation | movement of the buffer device of the refrigerator of 1st Embodiment of this invention. Side surface sectional drawing which shows the principal part of the air damper of the buffer device of the refrigerator of 2nd Embodiment of this invention. The rear view which shows the principal part of the air damper of the buffer device of the refrigerator of 2nd Embodiment of this invention. Side surface sectional drawing which shows the principal part of the air damper of the buffer device of the refrigerator of 3rd Embodiment of this invention. The rear view which shows the principal part of the air damper of the buffer device of the refrigerator of 3rd Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 3rd Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 3rd Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 4th Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 5th Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 5th Embodiment of this invention. Side surface sectional drawing which shows operation | movement of the air damper of the buffer device of the refrigerator of 6th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Freezer compartment 2a, 3a Door 3 Vegetable compartment 4, 5 Storage case 10 Guide part 11 Fixed rail 12 Moving rail 13 Fixed roller 14 Moving roller 16 Projection part 17 Elastic body 18 Screw 19 Strike (1st engaging member)
19a Engagement protrusion 20 Shock absorber 21 Catch (2nd engagement member)
21a engaging groove
21b Front lower part 22, 23 Guide pin 24 Cam groove 25 Tension spring 26 Angle 30 Air damper 31 Cylinder 32 Shaft 32a Screw part 32b Boss part 33 Cap 33a Insertion hole 34 Packing 34b Support part 34c Projection part 34d Extension part 35 Nut 36 Adjustment screw 37 air chamber

Claims (3)

A storage room;
A door for opening and closing the storage room;
A storage case that is integrally formed with the door and stores stored items;
A guide unit that slides the storage case back and forth according to the opening and closing of the door;
A shock absorber that attenuates the moving speed of the storage case that slides backward;
A cylinder provided in the shock absorber and having an opening at a front end, a packing that slides on the inner surface of the cylinder, a shaft that is connected to the packing and that moves forward and backward with the storage case, and loosely fits the shaft An air damper having a cap that has an insertion hole and closes the opening;
A first engagement member attached to the storage case;
A second engagement member coupled to the shaft and slidably moved rearward to engage with the first engagement member at a predetermined position;
Biasing means for biasing the second engagement member backward,
The first engaging member has an engaging protrusion;
The second engagement member includes a first protrusion, a second protrusion provided behind the first protrusion, and a gap between the first protrusion and the second protrusion. And has an engaging groove engageable with the engaging protrusion,
The height of the first protrusion is lower than the height of the second protrusion,
A refrigerator characterized in that outside air is taken into the cylinder from between the insertion hole and the shaft .   The second engagement member moves up and down relatively with respect to the first engagement member to be disengaged, and the first engagement member is mounted on a projecting portion that projects from a side surface of the storage case. The refrigerator according to claim 1, wherein the refrigerator is placed and screwed, and an elastic body is provided between the protruding portion and the first engagement member.   The refrigerator according to claim 1 or 2, wherein the storage case moves downward at a rear portion by guidance of the guide portion.

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