JP6374183B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator provided with a lock mechanism that locks the closed state of a door when vibration such as an earthquake occurs.

  A conventional lock mechanism that locks the closed state of the door by vibration when an earthquake occurs to prevent the door from being opened is disclosed in Patent Document 1. This locking mechanism is provided in the storage box. The storage box has a cubic main body having an opening on the front surface, and a storage container that is taken in and out of the main body through the opening. The storage container is formed in a box shape having an open top surface, and a handle is provided on the front surface of the drawer-type door integrated with the storage container. The user grasps the handle and opens and closes the door.

  The lock mechanism is disposed in a recess provided in the inner wall of the main body, and includes a weight body and a lever member. The lever member is pivotally supported in a horizontal plane with its front end supported by a vertical rotation shaft so that it can rotate between a position housed in the recess and a position protruding from the opening surface of the recess. It has become. A recess is provided in the rear portion of the lever member on the surface opposite to the storage container, and the wall surface at the rear end of the recess is formed by an inclined surface that is inclined away from the storage container toward the rear.

  The weight body is formed in a substantially triangular cross-sectional shape with the apex at the bottom, and is disposed so as to be swingable in the recess of the lever member. And the engaging part which can be engaged with the rear-end part of a lever member is provided in the side surface facing the lever member of a storage container.

  When the vibration of the main body is transmitted to the lock mechanism due to the occurrence of an earthquake and the lock mechanism vibrates, the weight body tilts along the inclined surface of the lever member and the lever member rotates toward the storage container. Thereby, the rear end portion of the lever member is engaged with the engaging portion of the storage container, and the forward movement of the storage container is restricted. That is, the closed state of the door is locked to prevent the door from being opened. Therefore, it is possible to prevent the storage item from falling and the collision between the user and the door when an earthquake occurs, and to improve the safety of the storage box.

  The refrigerator disclosed in Patent Document 2 has a plurality of storage rooms in the main body, and the upper storage room is opened and closed by a single-open door. Bearing portions are provided on the upper and lower surfaces of the door, and a hinge pin is pivotally supported by the bearing portion to form a vertical pivot shaft of the door. A hook member extending in the left-right direction is provided in the vicinity of the hinge pin on the lower surface of the door. The hook member is formed of resin, and an engaging portion with which the hook member engages is provided at a position facing the hook member of the main body portion.

  When the rear surface of the front end portion of the hook member collides with the front surface of the engaging portion when the door is closed, the front end portion of the hook member is engaged with the engaging portion after being elastically deformed. Thereby, the closed sealed state of the storage chamber can be ensured. Further, when the door is opened, the tip end portion of the hook member is elastically deformed, and the engagement between the hook member and the engaging portion is easily released.

Japanese Patent Laying-Open No. 2006-28780 (pages 9 to 11, FIGS. 3 to 6) Japanese Patent No. 3666101 (3rd page, Fig. 2, Fig. 3)

  In recent years, there has been a growing demand for improving the safety of refrigerators by locking the closed state of refrigerator doors when an earthquake occurs. However, when the lock mechanism of Patent Document 1 is provided on the inner wall of the main body of the refrigerator, the lock mechanism faces the storage chamber. For this reason, the rotation shaft portion of the lever member may be frozen by cold air, or ice may be generated within the rotation range of the lever member. Accordingly, the rotation of the lever member is hindered, and there is a possibility that a stored item or a door that is opened without being locked when an earthquake occurs and falls from the storage chamber or the storage pocket of the door collides with the human body.

  Further, in the refrigerator disclosed in Patent Document 2, since the engagement between the hook member and the engaging portion is easily released by the force with which the user opens the door, the main body vibrates and the door vibrates when an earthquake occurs. When transmitted, the engagement between the hook member and the engaging portion may be released. For this reason, there is a possibility that a stored item or a door that is opened without being locked when an earthquake occurs and falls from a storage chamber or a storage pocket of the door collides with a human body.

  An object of this invention is to provide the refrigerator which can lock the closed state of a door reliably at the time of an earthquake occurrence, and can improve safety | security.

  In order to achieve the above object, the present invention provides a refrigerator including a main body having a storage chamber that opens a front surface and stores stored items in a cold state, and a door that opens and closes the front surface of the storage chamber. A lock mechanism provided on one of the main body and the door, the lock mechanism being arranged outside the storage chamber, and when the vibration of the lock mechanism is generated, The closed state of the door is locked by maintaining the engagement between the other side of the door and the lever member.

  In the refrigerator having the above-described configuration, the lock mechanism includes a biasing member that biases the lever member in a direction of engaging the main body portion or the door, and a moving body that moves by vibration, The lever member is rotated against the urging force of the urging member to open the door, and when the vibration is generated, the lever is brought into contact with the lever member to restrict the rotation of the lever member. It is preferable.

  According to the present invention, in the refrigerator configured as described above, an engaging portion that can be engaged with the lever member is provided in the main body portion or the door, and a vertical position of the engaging portion of the lever member that engages with the engaging portion. The length in the direction is preferably shorter or longer than the length in the vertical direction of the engaging portion.

  In the refrigerator having the above-described configuration, it is preferable that the door is pivotally supported by the main body portion with a vertical pivot shaft, and the lock mechanism is provided on the upper wall of the main body portion or the upper surface of the door.

  In the refrigerator having the above-described configuration, it is more preferable that the lock mechanism is disposed in the vicinity of the pivot shaft.

  According to the present invention, the lever member that can be rotated in a horizontal plane maintains the engagement with the main body or the door, and the lock mechanism that locks the closed state of the door is disposed outside the storage chamber. Rotation failure can be prevented. Therefore, it is possible to improve the safety of the refrigerator by reliably locking the closed state of the door when an earthquake occurs. In addition, since the lever member can be rotated in a horizontal plane, even if the door descends due to aging, etc., it reliably maintains the engagement with the main body or the door and reliably prevents the door from being opened in the event of an earthquake. can do.

The front view which shows the refrigerator of 1st Embodiment of this invention. Sectional drawing on the right side showing the refrigerator according to the first embodiment of the present invention. The right view of the upper part of the refrigerator of 1st Embodiment of this invention The top view of the right part of the refrigerator of a 1st embodiment of the present invention. The perspective view which shows the locking mechanism of the door of the refrigerator of 1st Embodiment of this invention. Side surface sectional view which shows the normal locking mechanism of the door of the refrigerator of 1st Embodiment of this invention Side surface sectional view which shows the locking mechanism at the time of earthquake occurrence of the refrigerator door of 1st Embodiment of this invention The front view which shows the refrigerator of 2nd Embodiment of this invention. The front view which shows the refrigerator of 3rd Embodiment of this invention. Top sectional drawing which shows the locking mechanism of the door of the refrigerator compartment of the refrigerator of 3rd Embodiment of this invention. Side surface sectional drawing which shows the locking mechanism of the door of the refrigerator compartment of the refrigerator of 3rd Embodiment of this invention. The front view which shows the refrigerator of 4th Embodiment of this invention. It is a top view of the right part of the refrigerator of 4th Embodiment of this invention, Comprising: Explanatory drawing for demonstrating operation | movement of the locking mechanism of the door of the refrigerator compartment at normal time It is a top view of the right part of the refrigerator of 4th Embodiment of this invention, Comprising: Explanatory drawing for demonstrating operation | movement of the lock mechanism of the door of the refrigerator compartment at the time of an earthquake occurrence

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front view and a right side sectional view showing the refrigerator according to the first embodiment. The refrigerator 1 has a main body 2 formed by a heat insulating box 3 filled with a foam heat insulating material. A refrigerator compartment 5 is provided at the upper part of the main body 2. Below the refrigerating room 5, an ice making room 6 and a freezing room 7 are juxtaposed side by side through a partition wall 11 filled with a heat insulating material. Between the ice making chamber 6 and the freezing chamber 7, there is provided a vertical partition (not shown) extending in the vertical direction and disposed at the front of the main body 2.

  Below the ice making chamber 6 and the freezing chamber 7, a freezing chamber 8 is provided via a partition 13 that extends to the left and right and is disposed on the front of the main body 2. Below the freezer compartment 8, a vegetable compartment 9 is provided via a partition wall 12 filled with a heat insulating material. A machine room 20 is provided at the lower rear of the heat insulating box 3.

  The refrigerator compartment 5 stores the stored items in a refrigerator, and the vegetable compartment 9 maintains the temperature higher than that of the refrigerator compartment 5 to store the stored items such as vegetables in a refrigerator. The ice making room 6, the freezing room 7, and the freezing room 8 communicate with each other, and ice making and ice storage are performed in the ice making room 6, and stored items are stored frozen in the freezing rooms 7 and 8. A compressor 21 that operates the refrigeration cycle is disposed in the machine room 20.

  The refrigerator compartment 5 is opened and closed by double doors 14 and 15 pivoted at the left and right ends, respectively. The lateral width of the door 15 covering the right side of the refrigerator compartment 5 is formed to be larger than the lateral width of the door 14 covering the left side (for example, 1.5 to 2 times the lateral width of the door 14). A plurality of door pockets 14a and 15a (14a is not shown) are provided on the back surfaces of the doors 14 and 15, respectively. A configuration in which the left and right doors 14 and 15 have the same width is also possible.

  The ice making chamber 6 is opened and closed by a drawer-type door 16 integrated with an ice storage container (not shown). The freezer compartments 7 and 8 are opened and closed by drawer type doors 17 and 18 integrated with storage cases 17a and 18a, respectively. The vegetable compartment 9 is opened and closed by a drawer type door 19 integral with the storage case 19a.

  The drawer type doors 16 to 19 are provided with holding members (not shown) extending rearward from the left and right ends. The ice storage container and the storage cases 17a, 18a, and 19a are held by the left and right holding members. The holding member is provided with a roller and a sliding portion having a curved lower surface such as an arc. A rail member (not shown) extending in the front-rear direction is provided on the inner wall of the heat insulating box 3, and the holding member is slid and guided on the rail member via the sliding portion. The sliding doors 16 to 19 can be smoothly opened and closed by the sliding portion.

  Further, the rail member is provided with a step portion that guides the sliding portion obliquely downward in front of the position where the doors 16 to 19 are closed. As a result, when the doors 16 to 19 are closed, the doors 16-19 are lowered and guided backward by their own weight. Therefore, the doors 16 to 19 have a self-closing property, and the sealing properties of the doors 16 to 19 can be improved.

  The inside of the doors 14 to 19 is filled with a foam heat insulating material, and a glass plate 37 is arranged on the front surface for improving aesthetics and cleanability. In addition, packings 26 (see FIG. 3) that are in close contact with the front surface of the heat insulating box 3 are provided on the rear peripheral portions of the doors 14 to 19.

  A cold air passage 24 is provided on the back of the freezer compartments 7 and 8, and a cold air passage 25 communicating with the cold air passage 24 is provided on the back of the refrigerator compartment 5 via a damper (not shown). A cooler 22 and a blower 23 are arranged in the cool air passage 24, and a discharge port 24 a facing the freezer compartment 7 and a return port 24 b for returning cool air to the cooler 22 are opened. The cooler 22 is connected to the compressor 21 and generates cool air.

  A discharge port 25a facing the refrigerator compartment 5 opens in the cold air passage 25, and a communication passage (not shown) communicating with the vegetable compartment 9 is led out from the refrigerator compartment 5. The vegetable compartment 9 is provided with a return port (not shown) for returning cool air to the cooler 22.

  As the compressor 21 and the blower 23 are driven, the air flowing through the cool air passage 24 exchanges heat with the cooler 22 to generate cool air, which is discharged from the discharge port 24 a to the freezer compartment 7. The inside of the ice making chamber 6, the freezing chamber 7 and the freezing chamber 8 is cooled by the cold air discharged to the freezing chamber 7, and returns to the cooler 22 through the return port 24b. Thereby, the inside of the ice making room 6, the freezing room 7, and the freezing room 8 is maintained at a temperature lower than the freezing point.

  When the damper is opened, a part of the cool air flowing through the cool air passage 24 flows into the cool air passage 25 and is discharged from the discharge port 25a to the refrigerator compartment 5. The inside of the refrigerator compartment 5 is cooled by the cold air discharged to the refrigerator compartment 5, and the inside of the refrigerator compartment 5 is maintained at a temperature higher than the freezing point. The cold air flowing through the refrigerator compartment 5 flows into the vegetable compartment 9 through the communication path, and the vegetable compartment 9 is maintained at a higher temperature than the refrigerator compartment 5. The cold air that has circulated through the vegetable compartment 9 returns to the cooler 22 through the return port.

  Holding members 30 are attached to the left and right ends of the top surface of the heat insulating box 3, and holding members 31 are attached to the left and right ends of the front surface of the partition wall 11. The holding members 30 and 31 hold a hinge pin 32 (see FIGS. 3 and 4) that forms a pivot shaft C as will be described in detail later.

  Lock mechanisms 40 are attached to the upper surfaces of the left and right holding members 30, respectively. The same locking mechanism 40 as that on the holding member 30 is attached to the left part and the right part of the front surface of the partition part 13, respectively. The same locking mechanism 40 as that on the holding member 30 is attached to the central portion of the front surface of the partition wall 12, and the same locking mechanism 40 as that on the holding member 30 is attached to the central portion of the front surface of the bottom wall 3 a of the heat insulating box 3. Is attached. Thereby, the lock mechanism 40 is arrange | positioned outside the refrigerator compartment 5, the ice making chamber 6, the freezer compartments 7 and 8, and the vegetable compartment 9 (all are storage compartments). As will be described in detail later, the lock mechanism 40 locks the closed state of the doors 14 to 19 by vibration to prevent the door from being opened.

  FIG. 3 shows a right side view of the upper part of the refrigerator 1. FIG. 4 shows a top view of the right part of the refrigerator 1. 4 is a top sectional view of the lock mechanism 40 shown in FIG. The holding member 30 is formed of a metal plate and is screwed to the upper surface of the heat insulating box 3. The holding member 31 (see FIG. 1) is also formed of a metal plate and is screwed to the front surface of the partition wall 11 (see FIG. 2).

  The holding members 30 and 31 protrude forward from the heat insulating box 3 and hold a metal hinge pin 32 extending in the vertical direction. Bearing portions 33 are provided on the upper and lower surfaces of the door 15, and the hinge pin 32 is pivotally supported by the bearing portion 33 to form a vertical pivot shaft C (see FIG. 1) of the door 15. The door 14 also has a vertical pivot shaft C formed by the hinge pin 32 with the same configuration.

  The lock mechanism 40 is displaced to the open end side of the door 15 with respect to the hinge pin 32 and screwed onto the holding member 30. Accordingly, the lock mechanism 40 is disposed in the vicinity of the hinge pin 32 that forms the pivot shaft C.

  The upper surface of the door 15 is covered with an upper surface cover 36 of a resin molded product. The bearing portion 33 is integrally formed by the upper surface cover 36. A base 38 is attached to the vicinity of the bearing portion 33 on the upper surface of the door 15 with screws or the like. A hook member 34 of a resin molded product extends rearward from the base 38. The hook member 34 is formed integrally with the base 38 and is provided to face the lock mechanism 40. The hook member 34 (engaging member) is formed in a bowl shape with the rear end portion 35 (engaging portion) bent to the right. The rear side of the rear end portion 35 is formed by an inclined surface 35a that is inclined forward rightward toward the front end.

  The lock mechanism 40 is positioned on the holding member 30 by positioning pins (not shown). Since the holding member 30 is formed of a metal plate, the lock mechanism 40 is accurately positioned at a predetermined position on the main body 2.

  The base member 38 may be omitted and the hook member 34 may be formed integrally with the upper surface cover 36. Accordingly, the hook member 34 is accurately disposed at a predetermined position with respect to the bearing portion 33. For this reason, the relative positional accuracy of the lock mechanism 40 and the rear end part 35 can be maintained high.

  Similarly, the lock mechanism 40 is screwed onto the holding member 30 that pivotally supports the door 14 and is disposed in the vicinity of the hinge pin 32 that forms the pivot shaft C. Further, a base 38 is attached to the vicinity of the bearing portion 33 on the upper surface of the door 14 with a screw or the like, and a hook member 34 extending rearward from the base 38 is provided to face the lock mechanism 40.

  The lock mechanism 40 that locks the closed state of the door 14 and the hook member 34 on the door 14 may be configured symmetrically with the lock mechanism 40 that locks the closed state of the door 15 and the hook member 34 on the door 15. Good.

  Further, a lock mechanism 40 similar to the above is screwed on the front surface of the partition portion 13, and hook members 34 similar to the above are provided on the lower surfaces of the doors 16 and 17 so as to face the lock mechanism 40, respectively. . Further, the same locking mechanism 40 is screwed to the front surface of the partition wall 12 and the front surface of the bottom wall 3a of the heat insulating box 3, and the same hook member 34 to the lower surfaces of the doors 18 and 19 is used. Are provided to face the lock mechanism 40, respectively.

  A lock mechanism 40 that locks the closed state of the doors 16 and 17 is provided on the left side surface and the right side surface of the main body 2, respectively, and the left side surface of the door 16 and the right side surface of the door 17 are hooked at positions facing the lock mechanism 40. The member 34 may be provided. In addition, a lock mechanism 40 that locks the closed state of the doors 18 and 19 is provided on the left side or the right side of the main body 2, and the hook member 34 is positioned at a position facing the lock mechanism 40 on the left or right side of the doors 18 and 19. May be provided.

  FIG. 5 is a perspective view of the lock mechanism 40 that locks the closed state of the door 15. 6 and 7 are side cross-sectional views of the lock mechanism 40 that locks the closed state of the door 15, and show a normal state and a state when an earthquake occurs, respectively. The configuration of the lock mechanism 40 that locks the closed state of the doors 14 and 16 to 19 is the same as the configuration of the lock mechanism 40 that locks the closed state of the door 15. For this reason, the lock mechanism 40 of the door 15 will be described as a representative.

  4 to 7, the lock mechanism 40 has a hollow casing 41 made of a resin molded product disposed on the holding member 30. The housing 41 opens an opening 41a on the front surface. A lever member 43 that protrudes from the opening 41a and extends forward and backward is pivotally supported on the housing 41 by a shaft portion 43a that forms a vertical rotation shaft. Thereby, the lever member 43 can be rotated in a horizontal plane. The lever member 43 is formed of a resin molded product, and a locking portion 43b bent to the left in a bowl shape is provided at the front end. The front surface side of the locking portion 43b is formed by an inclined surface 43c that is inclined backward to the left toward the tip. The back surface side of the locking portion 43b is formed by an inclined surface 43d that is inclined forward leftward toward the tip.

  An urging member 46 formed of a compression spring is provided at a portion rearward of the shaft portion 43 a of the lever member 43. As shown in FIG. 4, when the door 15 is closed, the lever member 43 is urged by the urging member 46 in a direction to engage with the hook member 34. Even when the doors 14 and 16 to 19 are closed, the lever members 43 of the respective lock mechanisms 40 are urged by the urging members 46 in the direction of engaging the hook members 34.

  A weight body 45 (moving body) is provided in the housing 41 behind the lever member 43. The weight body 45 is pivotally supported by a shaft portion 45a that forms a horizontal rotation shaft. The shaft portion 45a is provided at the upper end portion of the weight body 45 and extends in the left-right direction. Thereby, the weight body 45 can swing in the front-rear direction. Further, the weight body 45 is arranged so as not to contact the lever member 43 that rotates in a horizontal plane in normal times. Thereby, the weight body 45 does not hinder the rotation of the lever member 43 in normal times.

  The length D1 in the vertical direction (vertical direction) of the locking portion 43b of the lever member 43 is, for example, 15 mm. Moreover, the length D2 of the up-down direction (vertical direction) of the rear-end part 35 of the hook member 34 is formed, for example to 10 mm. That is, the vertical length D1 of the locking portion 43b is longer than the vertical length D2 of the rear end portion 35. The lengths D1 and D2 in the vertical direction of the locking portion 43b and the rear end portion 35 are preferably 15 mm or more and 10 mm or more, respectively.

  When the door 15 is opened in a normal state (see FIG. 4), the inclined surface 43 d of the locking portion 43 b of the lever member 43 comes into contact with the rear end portion 35 of the hook member 34. At this time, since the inclined surface 43d is inclined, when the locking portion 43b collides with the rear end portion 35 with a force larger than a predetermined value, the lever member 43 is opposed to the urging force of the urging member 46. It rotates in a direction away from the portion 35 (counterclockwise in FIG. 4). Therefore, the door 15 can be opened.

  When the door 15 is normally closed from the opened state, the inclined surface 35a (see FIG. 4) of the rear end portion 35 of the hook member 34 comes into contact with the inclined surface 43c (see FIG. 4) of the locking portion 43b of the lever member 43. . At this time, since the inclined surfaces 35 a and 43 c are inclined, they slide with each other, and after the lever member 43 is rotated, the locking portion 43 b is engaged with the rear end portion 35 of the hook member 34. Therefore, it is possible to prevent the door 15 from being unintended by the user during normal times and to ensure the closed and sealed state of the door 15.

  The locking mechanism 40 of the doors 14 and 16 to 19 operates in the same manner as the locking mechanism 40 of the door 15 when the doors 14 and 16 to 19 are opened and closed, so that the doors 14 and 16 to 19 are securely closed and sealed. can do.

  When the vibration of the main body 2 is transmitted to the lock mechanism 40 due to the occurrence of the earthquake and the lock mechanism 40 vibrates, the weight body 45 swings back and forth, and the weight body 45 is moved as shown by the one-dot chain line 45 ′ in FIG. 4 and FIG. The lever member 43 contacts the left side surface of the rear end portion. That is, the weight body 45 enters the rotation region of the lever member 43. Accordingly, the rotation of the lever member 43 in the counterclockwise direction is restricted, and the engagement between the lever member 43 and the hook member 34 is maintained even when the door 15 starts to open. Therefore, the closed state of the door 15 is locked. As a result, it is possible to prevent the user 15 from colliding with the door 15 opened at the time of the occurrence of the earthquake or the stored item dropped due to the opening of the door 15.

  At this time, since the lock mechanism 40 of the doors 14 and 15 is disposed outside the refrigerator compartment 5 (storage compartment), it is possible to prevent the rotation failure of the lever member 43 due to freezing. Therefore, the safety of the refrigerator 1 can be improved by reliably locking the closed state of the doors 14 and 15 when an earthquake occurs. Further, since the lever member 43 can be rotated in a horizontal plane, even when the doors 14 and 15 are lowered due to aging, etc., the engagement with the doors 14 and 15 is reliably maintained, and the doors 14 and 15 are The opening of 15 can be reliably prevented.

  Further, the lock mechanism 40 of the door 15 is disposed in the vicinity of the hinge pin 32 that forms the pivot shaft C. For this reason, even if the open end of the door 15 descends due to use over time, the locking portion 43 b can be reliably engaged with the rear end portion 35 of the hook member 34. Thereby, the opening of the door 15 can be reliably prevented when an earthquake occurs. Further, since the locking mechanism 40 of the door 14 is also disposed in the vicinity of the hinge pin 32, the opening of the door 14 can be reliably prevented in the event of an earthquake, as with the locking mechanism 40 of the door 15.

  In particular, since the doors 14 and 15 have the glass plate 37, the weight is large, and the amount of lowering of the open end due to use over time is large. However, by disposing the lock mechanism 40 in the vicinity of the pivot shaft C, the doors 14 and 15 can be reliably prevented from being opened.

  Similarly to the lock mechanisms 40 of the doors 14 and 15, the lock mechanisms 40 of the doors 16 to 19 can reliably prevent the doors 16 to 19 from being opened when an earthquake occurs.

  When the vibration of the lock mechanism 40 ends, the weight body 45 stops at a normal position (a position where it does not contact the lever member 43) due to gravity. Accordingly, the weight body 45 is retracted from the rotation region of the lever member 43, and the restriction on the rotation of the lever member 43 is released. Therefore, the doors 14 to 19 can be easily opened in normal times.

  According to this embodiment, the lever member 43 that is rotatable in a horizontal plane maintains the engagement with the rear end portion 35 (engagement portion) of the hook member 34 and locks the closed state of the doors 14 to 19. 40 is arranged outside the refrigerator compartment 5, the ice making compartment 6, the freezer compartments 7 and 8, and the vegetable compartment 9 (all are storage compartments). Thereby, the rotation failure of the lever member 43 by freezing can be prevented. Therefore, the safety of the refrigerator 1 can be improved by reliably locking the closed state of the doors 14 to 19 when an earthquake occurs.

  Further, since the lever member 43 can be rotated in a horizontal plane, the locking portion 43b can be engaged with the hook member 34 even when the doors 14 to 19 are lowered due to aging. Therefore, the doors 14 to 19 can be reliably prevented from opening when an earthquake occurs, and the safety of the refrigerator 1 can be improved.

  The lock mechanism 40 includes an urging member 46 that urges the lever member 43 in a direction to engage the doors 14 to 19, and a weight body 45 (moving body) that moves by vibration. The lever member 43 is rotated against the force to open the doors 14 to 19, and when the vibration is generated, the lever body 43 is brought into contact with the lever member 43 and the rotation of the lever member 43 is restricted. Thereby, opening prevention of the doors 14-19 at the time of an earthquake occurrence is easily realizable with a simple structure.

  The length D1 in the vertical direction (vertical direction) of the locking portion 43b of the lever member 43 that engages with the rear end portion 35 of the hook member 34 is greater than the length D2 in the vertical direction (vertical direction) of the rear end portion 35. Also long. Thereby, even if the doors 14 to 19 are lowered due to aging, the rear end portion 35 can be more reliably engaged with the locking portion 43b. Therefore, the doors 14 to 19 can be more reliably prevented from opening, and the safety of the refrigerator 1 can be further improved.

  The vertical length D1 of the locking portion 43b may be shorter than the vertical length D2 of the rear end portion 35. Even in this case, the doors 14 to 19 can be more reliably prevented from opening, and the safety of the refrigerator 1 can be further improved.

  Moreover, since the lock mechanism 40 which locks the closed state of the doors 14 and 15 is provided in the upper wall of the main-body part 2, the lock mechanism 40 of the doors 14 and 15 becomes difficult to be visually recognized by a user. Therefore, the aesthetics of the refrigerator 1 can be improved. A lock mechanism 40 that locks the closed state of the doors 14 and 15 may be provided on the upper surfaces of the doors 14 and 15, and the hook member 34 may be provided on the upper wall of the main body 2.

  In addition, since the lock mechanism 40 that locks the closed state of the doors 14 and 15 is disposed in the vicinity of the pivot shaft C, the doors 14 and 15 are surely secured even when the open ends of the doors 14 and 15 are lowered due to aging. The closed state of can be locked.

  In the present embodiment, a lock mechanism 40 that locks the closed state of the doors 16 to 19 may be provided on the doors 16 to 19, and the hook member 34 may be provided on the main body 2. Further, instead of the hook member 34, a bar-shaped engaging portion extending vertically may be formed.

Second Embodiment
Next, FIG. 8 has shown the front view of the refrigerator 1 of 2nd Embodiment. For convenience of explanation, the same reference numerals are assigned to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the arrangement of the lock mechanism 40 of the door 14 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  Since the locking mechanism 40 of the door 15 is arranged in the vicinity of the pivot shaft C as in the first embodiment, even if the open end of the door 15 is lowered due to aging, the door 15 is reliably locked in the event of an earthquake. be able to.

  The lock mechanism 40 of the door 14 is attached to the ceiling surface of the main body 2 and is disposed at the end of the door 14 on the open side. Since the door 14 having a narrower width than the door 15 is less likely to be deformed by its own weight or inclined due to wear of the hinge pin 32 (see FIG. 4), the open end is less likely to drop due to aging. For this reason, even if the lock mechanism 40 is disposed at the end of the door 14 on the open side, the door 14 can be reliably locked when an earthquake occurs.

  At this time, since the lock mechanism 40 of the door 14 is separated from the pivot shaft C, the force received from the opened door 14 is small. Therefore, the lock mechanism 40 of the door 14 can be downsized and the cost of the refrigerator 1 can be reduced.

<Third Embodiment>
Next, FIG. 9 has shown the front view of the refrigerator 1 of 3rd Embodiment. For convenience of explanation, the same reference numerals are assigned to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the door 15 (see FIG. 1) of the refrigerator compartment 5 is omitted, and the door 15 is formed in a single opening. Further, a lock mechanism 60 is provided instead of the lock mechanism 40 of the door 15. Other parts are the same as those in the first embodiment.

  The refrigerator 1 is provided with a refrigerator compartment 5, a freezer compartment 8, and a vegetable compartment 9 in order from the top of the main body 2, and is opened and closed by doors 15, 18, and 19, respectively. The door 15 has a pivot shaft C formed by a hinge pin 32 held by holding members 30 and 31 provided at the right end of the main body 2.

  The lock mechanism 60 is attached to the upper part of the left side wall of the main body 2 that is the open end side of the door 15. As a result, the lock mechanism 60 is disposed outside the refrigerator compartment 5. A bar-shaped engaging portion 39 (see FIGS. 10 and 11) extending in the vertical direction is provided on the left side surface of the door 15.

  10 and 11 show a top sectional view and a side sectional view of the lock mechanism 60. The lock mechanism 60 has a hollow casing 61 made of a resin molded product disposed on the left side wall of the main body 2. The housing 61 has an opening 61a on the front surface, and an inner bottom surface 61b is formed in a conical surface having a vertex at the front of the housing 61 at the lower end. Further, the right side surface 61c inside the housing 61 is formed as an inclined surface whose rear side is inclined leftward.

  A lever member 63 that projects from the opening 61a and extends in the front-rear direction to the housing 61 is pivotally supported by a shaft portion 63a that forms a vertical rotation shaft. Thereby, the lever member 63 is rotatable in a horizontal plane. At the front end of the lever member 63, a hook-shaped locking portion 63b bent rightward is provided.

  A sphere 62 made of metal or the like is disposed on the bottom surface 61 b in the housing 61. The sphere 62 is normally disposed at the lower end of the bottom surface 61b of the conical surface. At this time, in the lever member 63, the engaging portion 63 b is arranged on the left side of the engaging portion 39 by the biasing of an elastic member (not shown). Thereby, the door 15 can be opened and closed.

  When the vibration of the main body 2 is transmitted to the lock mechanism 60 due to the occurrence of an earthquake and the lock mechanism 60 vibrates, the sphere 62 rolls on the bottom surface 61 b of the housing 61. As a result, the sphere 62 moves in the direction away from the shaft portion 63a as shown by the alternate long and short dash line 62 'and is arranged at the rear portion of the housing 61. At this time, the sphere 62 moves to the left along the right side surface 61c, the lever member 63 rotates to the right as shown by the alternate long and short dash line 63 ', and the locking portion 63b is engaged with the engaging portion 39. Match. Thereby, even if the door 15 begins to open, the closed state is locked by the engagement of the engaging portion 63b and the engaging portion 39, and the opening of the door 15 is prevented.

  When the vibration is finished, the sphere 62 is arranged at the lower end of the bottom surface 61b by gravity, and the front end of the lever member 63 is moved to the left by the elastic member.

  According to the present embodiment, the lock mechanism 60 that locks the closed state of the door 15 by moving the front end of the lever member 63 that is rotatable in a horizontal plane in the left-right direction is provided outside the refrigerator compartment 5. Thereby, the effect similar to 1st Embodiment can be acquired.

  Further, even if the open end of the door 15 is lowered due to use over time, the locking portion 63b engages with the engaging portion 39, and the door 15 can be locked when an earthquake occurs. Therefore, the door 15 can be reliably prevented from opening, and the safety of the refrigerator 1 can be improved.

  Further, since the engaging portion 39 that extends in the vertical direction and engages with the engaging portion 63b at the front end of the lever member 63 is provided on the side surface of the door 15, it is easy to engage with the engaging portion 63b and the engaging portion 39. The door 15 can be prevented from opening.

  In the present embodiment, the engaging portion 63b of the lever member 63 may be formed in a bar shape and the engaging portion 39 may be formed in a hook shape. Further, the lock mechanism 60 may be provided on the side surface of the door 15 in place of the main body 2, and the lever member 63 may be engaged with the main body 2 when an earthquake occurs.

<Fourth embodiment>
Next, FIG. 12 has shown the front view of the refrigerator 1 of 4th Embodiment. FIG.13 and FIG.14 has shown the top view of the right part of the refrigerator 1 of 4th Embodiment. 13 and FIG. 14 are top cross-sectional views illustrating the state of the lock mechanism 60 during normal times and when an earthquake occurs, respectively. For convenience of explanation, the same reference numerals are given to the same parts as those in the third embodiment shown in FIGS. This embodiment includes a refrigerator compartment 5, an ice making compartment 6, freezer compartments 7 and 8, and a vegetable compartment 9 as in the first embodiment, and is similar to the third embodiment in place of the lock mechanism 40 of the doors 14 and 15. The lock mechanism 60 is provided, and the arrangement of the lock mechanism 60 of the doors 14 and 15 and the shape of the lever member 63 are different from those of the third embodiment. In the present embodiment, the engaging portion 39 is omitted. Other parts are the same as those of the third embodiment.

  The lock mechanism 60 of the door 15 is attached to the upper part of the right side wall of the main body 2 and is disposed outside the pivot shaft C (see FIG. 1) formed by the hinge pins 32. The lock mechanism 60 of the door 14 (see FIG. 1) is attached to the upper part of the left side wall of the main body 2 and is disposed outside the pivot shaft C. The lock mechanism 60 of the door 14 is configured symmetrically with the lock mechanism 60 of the door 15.

  A gap S is formed by the packing 26 between the doors 14 and 15 and the front surface of the heat insulating box 3. The locking portion 63 b provided at the front end of the lever member 63 of the lock mechanism 60 is formed in a flat plate shape and has a width in the front-rear direction that can enter the gap S.

  As shown in FIG. 13, the locking portion 63 b provided at the front end of the lever member 63 of the lock mechanism 60 is disposed on the right side of the right side surface of the door 15 in a normal state. Moreover, the latching | locking part 63b of the locking mechanism 60 of the door 14 is arrange | positioned on the left side rather than the left side surface of the door 14 in normal times. Thereby, the doors 14 and 15 can be opened and closed.

  When an earthquake occurs, the vibration of the main body 2 is transmitted to the lock mechanism 60 and the lock mechanism 60 vibrates, and the front end of the lever member 63 moves to the left as shown in FIG. At this time, the front end of the lever member 63 of the lock mechanism 60 of the door 14 moves to the right. Thereby, the latching | locking part 63b approachs into the clearance gap S outside the pivot axis C, the closed state of the doors 14 and 15 is locked, and the opening of the doors 14 and 15 is prevented. Therefore, the same effect as that of the first embodiment can be obtained.

  In the present embodiment, the lock mechanism 60 may be provided on the side surfaces of the doors 14 and 15 instead of the main body 2.

  In the first, second, and fourth embodiments, the holding members 30 and 31 of the hinge pin 32 may be provided on the doors 14 and 15, and the bearing portion 33 may be provided on the main body 2. At this time, the lock mechanisms 40 and 60 can be disposed in the vicinity of the pivot shaft C by attaching the lock mechanisms 40 and 60 to the bearing portion 33.

  INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator provided with the locking mechanism which locks a door at the time of the occurrence of an earthquake.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Main body part 3 Heat insulation box 3a Bottom wall 4, 10 Heat insulating material 5 Refrigeration room 6 Ice making room 7, 8 Freezing room 9 Vegetable room 11, 12 Partition wall 13 Partition part 14-19 Door 15a Door pocket 17a-19a Storage Case 20 Machine room 21 Compressor 22 Cooler 23 Blower 24, 25 Cold air passage 26 Packing 30, 31 Holding member 32 Hinge pin 33 Bearing part 34 Hook member 35 Rear end part 36 Top cover 38 Base 39 Engagement part 40, 60 Lock Mechanism 41, 61 Housing 43, 63 Lever member 43b, 63b Locking portion 45 Weight body (moving body)
46 Biasing member 62 Sphere

Claims (5)

In a refrigerator having a main body having a storage chamber that opens a front surface and stores stored items in a cooled state, and a door that opens and closes the front surface of the storage chamber,
It has a lever member that can rotate in a horizontal plane and includes a lock mechanism provided on one of the main body and the door,
Arranging the locking mechanism outside the storage chamber;
Maintaining the engagement of the lever member with the other of the main body and the door when vibration of the locking mechanism occurs, and locking the closed state of the door;
The locking mechanism includes an urging member that urges the lever member in a direction to engage the main body portion or the door, and a moving body that moves by vibration.
The rotation of the lever member by the moving body comes into contact with the lever member moves from the predetermined position by the vibration of the front kilometers click mechanism is restricted,
The refrigerator returns to the predetermined position when the vibration of the lock mechanism ends. The moving body is pivotally supported by a horizontal axis and can swing.
In a normal state, the lever member rotates against the urging force of the urging member to open the door, and when the vibration is generated, the lever is swung to contact the lever member. The refrigerator according to claim 1, wherein rotation is restricted. While providing an engagement portion engageable with the lever member on the main body portion or the door,
The length in the vertical direction of the engaging portion of the lever member engaged with the engaging portion is shorter or longer than the length in the vertical direction of the engaging portion. Refrigerator.   The said door is pivotally supported by the said main-body part with the vertical pivot axis | shaft, The said locking mechanism was provided in the upper wall of the said main-body part, or the upper surface of the said door, The Claim 1 characterized by the above-mentioned. Refrigerator.   The refrigerator according to claim 4, wherein the lock mechanism is disposed in the vicinity of the pivot shaft.

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