JP6452524B2 - Receiving unit for locking sliding door of refrigerator and locking device - Google Patents

Description

  The present invention relates to a receiving unit for locking a sliding door of a refrigerator and a locking device.

  Commercial refrigerators are, for example, structures such as a prefabricated prefabricated refrigerator, a freezer, a storage or a cold storage, and a prefabricated clean room. These refrigerators for business use have a warehouse opening on one wall surface of the refrigerator. Moreover, these commercial refrigerators are all large-sized and have a large opening area at the warehouse. Therefore, many of these commercial refrigerators employ sliding doors. The sliding door opens and closes the warehouse door by reciprocating along the wall surface provided with the warehouse door.

  For locking the refrigerator door, various lock means are provided at the storage door. For example, Patent Document 1 discloses a locking device.

  The apparatus includes a receiving metal fitting and a sliding door key.

  The bracket is a hinge. The receiving metal fitting has a pair of plate-like portions connected around the vertical axis. One plate-like part is fixed to the wall surface of the peripheral edge of the warehouse. The other plate-like portion has a receiving seat for engaging and disengaging the hook. This other plate-like portion is displaced between a lying position where it overlaps with one plate-like portion and a standing position where it stands upright with respect to one plate-like portion in a 90 ° posture in plan view.

  The sliding door key is a unit embedded in the end surface of the sliding door in the closing direction (moving direction when the storage door moves in the direction in which the sliding door closes). The sliding door key includes a hook that engages with and disengages from the seat. The hook rotates about an axis along the front-rear direction of the slide door and is displaced between the lock posture and the release posture. When the hook is in the locked posture, the hook projects from the end surface and engages with the receiving seat of the plate-like portion in the standing state. Further, when the hook is in the release posture, the hook is detached from the receiving seat and stored inside the end surface.

JP-A-8-21682

  When the apparatus disclosed in Patent Document 1 is used, operability and appearance are improved.

  However, in the apparatus disclosed in Patent Document 1, since the receiving metal fitting is composed of a simple hinge in which a pair of plate-like portions are connected around the vertical axis, the plate-like portion having the receiving seat is always freely displaced. It was in a state, and the position of the receiving seat was difficult to determine. For this reason, when the hook is engaged with the receiving seat, it is difficult to align the receiving seat and the hook, and it is difficult to perform the locking work and the workability is poor. In order to solve such a problem, it is also conceivable to provide an urging member that urges the plate-like portion having the receiving seat to the locked posture. However, in that case, the plate-like portion having the receiving seat is always biased to the locked posture, which disturbs the refrigerator user. Therefore, it is considered that convenience is low in any case.

  The present invention has been made in view of the above-described problems, and in improving operability and appearance, the reliability of the operation can be secured and the receiving unit for locking the sliding door of the refrigerator can be further improved. It is an object to provide a locking device.

  In order to solve the above problems, the present invention is provided in a refrigerator having a sliding door that opens and closes the warehouse opening by reciprocating along a wall surface on which the warehouse opening is formed, and cooperates with a lock unit. A sliding door locking receiving unit for locking the sliding door, and a housing fixed to either the closing end surface of the sliding door or the wall surface, and rotatable to the housing A receiving member that includes a shaft portion to be supported, and that is pivotable between a locking posture protruding from the housing so as to engage with the lock unit and a retracting posture that falls within the housing; and is attached to the housing A spring member that urges the receiving member in each of the lock posture and the retracted posture, and the shaft portion includes a cam surface that contacts the spring member, and the cam surface includes Receiving part Is in a locked position, a first pressure receiving portion configured to receive a biasing force of the spring member that biases the receiving member in the locked position, and when the receiving member is in the retracted position, A receiving unit for locking a sliding door of a refrigerator, comprising: a second pressure receiving portion configured to receive a biasing force of the spring member that biases the receiving member to the retracted posture.

  In this aspect, the receiving member of the receiving unit can be made to cooperate with the lock unit, the sliding door with the closed door closed is locked, and the security of the refrigerator using the sliding door can be ensured. Therefore, the operability at the time of locking becomes high and the appearance is improved.

  Moreover, in this aspect, the receiving member can be protruded from the housing only when locking is necessary. On the other hand, when the slide door is open, the receiving member can be laid down in the housing to take a retracted posture. Therefore, not only the aesthetics of the refrigerator is improved, but there is no risk that the receiving member will be disturbed when the warehouse is passed. In addition, since the receiving unit is configured to allow the receiving member to fall on the housing, it is not necessary to provide a recess (embedded portion) for allowing the receiving member to appear and disappear on the slide door or the wall surface. Therefore, there is an advantage that construction can be easily performed and retrofitting can be easily performed on an existing refrigerator.

  In addition, when the receiving member is in the locked posture, the biasing force of the spring member is transmitted from the first pressure receiving portion to the receiving member, and the receiving member is biased to the locked posture. On the other hand, when the receiving member is in the retracted position, the biasing force of the spring member is transmitted from the second pressure receiving portion to the receiving member, and the receiving member is biased to the retracted position. Therefore, the posture of the receiving member can be stabilized by urging the receiving member with the spring member. Moreover, every time the portion receiving the biasing force of the spring member is switched between the first pressure receiving portion and the second pressure receiving portion in the process of switching the posture of the receiving member between the locked posture and the retracted posture, the operator Can sense that the urging force of the spring member is switched (to obtain a so-called click feeling), and it is possible to ensure the reliability of the operation.

  In the sliding door locking receiving unit of the refrigerator according to a preferred aspect, the spring member is arranged in a posture along the receiving member in the retracted posture, and one end portion is fixed to the housing and the other end portion is It is comprised with the leaf | plate spring which presses the said cam surface. In this aspect, since the spring member constituted by the leaf spring is arranged in a posture along the receiving member in the retracted posture, the casing is not disturbed by the refrigerator user as compared with the case where the compression coil spring is used as the spring member. It can contribute to the thinning of the body and improve the aesthetics.

  Another aspect of the present invention is a locking device comprising the slide door locking receiver unit of the refrigerator and a lock unit that forms locking means in cooperation with the slide door locking receiver unit of the refrigerator, The lock unit includes a hook member that is displaced between an engagement posture that engages with the receiving member and a disengagement posture that disengages from the receiving member, and one of the closing direction end surface of the slide door and the wall surface. It is the locking device characterized by being fixed to. In this aspect, using the receiving unit that can obtain a click feeling when operating the receiving member, the sliding door with the closed door is closed, and the security of the refrigerator using the sliding door can be ensured. Therefore, not only the appearance is improved, but the operability at the time of locking is remarkably increased.

  In the locking device according to a preferred aspect, the receiving unit is attached to an end surface of the sliding door in the closing direction, and the lock unit is attached to the lock unit by an attachment member that can be removed from the wall surface in the refrigerator. It is fixed on the wall. In this aspect, when the worker or the like is in the refrigerator, when the lock is involuntarily locked, the worker or the like forces the lock unit to the wall surface by operating the mounting member from the refrigerator. You can leave. Thereby, an operator etc. can cancel | release the lock | rock of a locking device out of a refrigerator in emergency, and can go out of a refrigerator.

  In the locking device according to a preferred aspect that employs the attachment member, the shaft portion is supported by the housing around a vertical axis, and the receiving member is locked along the moving direction of the slide door. The hook member includes an arm portion that rotates about a vertical line, and a claw portion that protrudes in a rotation direction from a distal end portion of the arm portion, and the wall surface with respect to the receiving member By rotating in a direction close to the position, the disengagement posture is displaced to the engagement posture. In this aspect, the same receiving unit and lock unit can be adopted regardless of whether the sliding door is a left-opening door or a right-opening door. For this reason, general versatility can be given to the product, and parts management and distribution are improved. Further, in this aspect, the hook member is configured to be displaced from the disengagement posture to the engagement posture by rotating in the direction close to the wall surface with respect to the receiving member, so that the lock unit is mounted on the wall surface. The direction in which the hook member is removed is along the direction in which the hook member moves from the engagement posture to the separation posture. Therefore, the lock unit can be detached from the hook member simply by operating the mounting member so as to release the fastening to the wall surface of the lock unit, thereby simplifying the structure of the mounting member and improving the reliability of the removal operation. Can contribute.

  As described above, according to the present invention, by being used in combination with the lock unit, the slide door with the storage opening closed can be locked, and the security of the refrigerator using the slide door can be secured, and at the time of locking The operability is improved and the appearance is improved. Moreover, when the receiving member is configured to be displaceable between the locked posture and the retracted posture, the spring member can stabilize the posture of the receiving member in order to improve the aesthetics and the convenience of passing, while the operator It is possible to ensure the certainty of the operation by obtaining a so-called click feeling at the time of operation. Therefore, according to the present invention, in improving operability and appearance, there is a remarkable effect that the certainty of the operation can be ensured and the convenience can be further improved.

  Further features, objects, configurations, and advantages of the present invention will be readily understood from the following detailed description that should be read in conjunction with the accompanying drawings.

1 is a schematic front view of a refrigerator according to an embodiment of the present invention. Fig. 2 is a schematic plan view of the refrigerator of Fig. 1. It is a perspective view which shows the external appearance of the locking device which concerns on embodiment of FIG. It is a disassembled perspective view of the receiving unit which concerns on embodiment of FIG. It is a right view of the housing | casing of the receiving unit which concerns on embodiment of FIG. It is a left view of the housing | casing of the receiving unit which concerns on embodiment of FIG. It is explanatory drawing which shows operation | movement of the receiving unit which concerns on embodiment of FIG. 1, (A) is a partially broken sectional view of the receiving unit in a lock position, (B) is a partially broken sectional view of the receiving unit in a retracted position. FIG. It is explanatory drawing which shows operation | movement of the receiving unit which concerns on embodiment of FIG. 1, (A) is a partial expanded sectional view of the receiving unit in a lock position, (B) is a partially expanded cross section of the receiving unit in a retracted position. FIG. It is sectional drawing which shows the state of the locking process of the refrigerator in embodiment of FIG. It is sectional drawing which shows the state at the time of locking of the refrigerator in embodiment of FIG. It is explanatory drawing which shows the lock | rock structure which concerns on embodiment of FIG. 1, (A) is a front part schematic, (B) is a plane partial schematic, (C) is a bottom part schematic.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  First, referring to FIG. 1, a locking device 20 according to this embodiment is provided in a commercial refrigerator 1. The refrigerator 1 is, for example, an assembly type prefabricated refrigerator, a freezer, a storage, a cold storage, a prefabricated clean room, or the like. In the following description, with reference to the front surface of the refrigerator 1 shown in FIG. 1, the left-right direction in FIG. 1 and the corresponding direction in each figure are the left-right direction, the up-down direction in FIG. 1, and the corresponding direction in each figure. Is the vertical direction.

  The refrigerator 1 includes a front wall 1a, a hanger rail 2 fixed to the front wall 1a, a slide door 4 suspended from the hanger rail 2, an upper pressing mechanism 5 that presses and aligns the upper side of the slide door 4, A lower pressing mechanism 6 that presses the lower side of the slide door 4 and aligns it is provided.

  The front wall 1a is formed with a warehouse 3 serving as an entrance. The warehouse 3 is edged in a rectangular shape by the frame material 15 of the front wall 1a. The front wall 1 a including the frame member 15 is an example of a wall surface that forms the warehouse 3. The wall surface is not limited to the front wall 1a, and may be a side wall or a rear wall.

  The hanger rail 2 extends horizontally along the upper edge of the warehouse 3 and guides the sliding door 4 so as to be slidable in the left and right directions. The hanger rail 2 is fixed to the front wall 1a with a plurality of L-shaped mounting brackets 10 arranged in the longitudinal direction. As shown in FIG. 2, the hanger rail 2 is bent from the central portion. The left half of the hanger rail 2 from this central portion constitutes an inclined portion 2a. The inclined portion 2a is inclined in a direction closer to the front wall 1a as it goes to the left side (downstream side in the direction in which the slide door 4 closes the warehouse 3). Moreover, the right half of the hanger rail 2 from the center part comprises the parallel part 2b. The parallel portion 2b extends in parallel with the front wall 1a over the entire length.

  The slide door 4 is provided to open and close the warehouse 3 and is suspended from the hanger rail 2 via door suspensions 8 and 9. The door suspensions 8 and 9 are disposed on both sides in the width direction of the slide door 4 and are fixed to the upper surface of the slide door 4, respectively. Similarly to the known device, the lifting tools 8 and 9 are guided in the longitudinal direction of the hanger rail 2 to reciprocate. By this reciprocating movement, the slide door 4 can move between a closed position for closing the storage opening 3 and an open position for opening the storage opening 3. FIG. 1 shows a state in which the slide door 4 is in the open position. A seal member 16 is attached to the back surface of the slide door 4.

  Referring to FIG. 9, the seal member 16 is a hollow elastic member (for example, a rubber product) having a substantially cylindrical cross section. The seal member 16 is fixed along the outline of the slide door 4. When the sliding door 4 closes the warehouse 3, the seal member 16 is pressed against the front surface of the frame 15 of the warehouse 3. Thereby, when the slide door 4 exists in the position which closes the storehouse 3, the seal member 16 is compressed between the storehouse 3 and the slide door 4. FIG. The compressed seal member 16 presses the frame material 15 by the reaction force. Thereby, the sealing member 16 seals the clearance gap between the storehouse 3 and the slide door 4, and maintains airtightness.

  The upper pressing mechanism 5 is provided to press the upper portion of the slide door 4 and improve the airtightness between the slide door 4 and the front wall 1a. The upper pressing mechanism 5 includes an upper roller 11 attached to the slide door 4 and an upper guide unit 12 attached to the front wall 1a. The upper roller 11 is attached to the upper end portion of the slide door 4 at the intermediate portion in the width direction of the slide door 4. The upper roller 11 is attached to be rotatable around a vertical axis. Further, the guide unit 12 is attached to the vicinity of the upper edge of the warehouse 3 at the intermediate portion in the width direction of the warehouse 3. When the warehouse 3 is closed by the slide door 4, the upper roller 11 has a function of rolling and contacting the inclined surface of the upper guide unit 12 and causing the slide door 4 to approach the front wall 1 a via the upper roller 11.

  The lower pressing mechanism 6 is provided to press the lower part of the slide door 4 and improve the airtightness between the slide door 4 and the front wall 1a. The lower pressing mechanism 6 includes a lower roller 13 projecting from a floor surface and a pair of lower guide units 14. The lower roller 13 is provided on the floor surface so as to be rotatable about a vertical line, and is disposed at a position facing the both sides of the front surface of the slide door 4 in the width direction when the slide door 4 is closed. ing. The pair of lower guide units 14 are attached to both sides in the width direction on the front surface of the slide door 4. When the warehouse 3 is closed by the slide door 4, the lower roller 13 has a function of rolling and contacting the inclined surface of the lower guide unit 14 and causing the slide door 4 to approach the front wall 1 a via the lower roller 13.

  Next, the locking device 20 that locks the slide door 4 that closes the warehouse port 3 will be described in detail.

  With reference to FIG. 1 and FIG. 3, the locking device 20 according to the present embodiment includes a receiving unit 40 and a lock unit 80. The receiving unit 40 is fixed to the end surface of the sliding door 4 in the closing direction. Here, the “closing direction” refers to the moving direction when the door 3 moves in the direction in which the slide door 4 closes (hereinafter, the moving direction is also referred to as “closing direction” as appropriate). The lock unit 80 is fixed to the outer surface of the front wall 1a. The position at which the lock unit 80 is fixed is downstream of the vertical portion of the frame member 15 in the closing direction (left side of the frame member 15 in FIG. 3). When the sliding door 4 closes the warehouse 3, as shown in FIG. 3, the receiving unit 40 and the lock unit 80 face each other in the left-right direction. The receiving unit 40 and the lock unit 80 are connected by a mechanism described later across the vertical portion of the frame member 15. Next, these units 40 and 80 will be described in detail.

  First, referring to FIGS. 4, 5, and 6, the receiving unit 40 includes a base 41, a receiving member 42 held by the base 41, and a shaft that holds the receiving member 42 in cooperation with the base 41. A holding member 43, a spring member 44 attached to the base 41 and biasing the receiving member 42 held by the base 41, a cover 45 covering the outer periphery of the base 41, and the base 41 in the closing direction end surface of the slide door 4 And a screw member 48 to be fixed to the head. In the present embodiment, the base 41, the shaft pressing portion 43, and the cover 45 constitute a housing that is fixed to one of the end surface 4a of the slide door 4 and the front wall 1a. The casing is a structure that constitutes an outer shell of the receiving unit 40 and carries functional components (such as a hook receiver 42b and a spring member 44 described later) included in the receiving unit 40.

  The base 41 is a metal structure having a rectangular shape in a side view and having a space (accommodating chamber 41f and spring chamber 41i) for accommodating the receiving member 42. The long side of the base 41 is arranged along the vertical direction. The short side of the base 41 is disposed along the front-rear direction. The left and right thicknesses of the base 41 are set to dimensions that are necessary and sufficient to accommodate the receiving member 42. On the rear side of the base 41, an insertion hole 41 a is formed that opens in a rectangular shape that extends long along the vertical direction. The insertion hole 41a communicates with the space (the storage chamber 41f and the spring chamber 41i) and allows a part of the receiving member 42 to pass therethrough so that the receiving member 42 is assembled to the base 41. Step portions 41q are respectively formed on both upper and lower sides in the insertion hole 41a. The step portion 41q is recessed on the inner back side of the insertion hole 41a by the thickness of the shaft pressing member 43 described later. Each step 41q is formed with a shaft groove 41b (only the shaft groove 41b on the upper inner surface is shown in FIG. 4) and is continuous with the insertion hole 41a. As will be described later, the shaft groove 41b is a portion that constitutes a bearing portion that supports the shaft portion 42a of the receiving member 42 when the receiving member 42 is inserted through the insertion hole 41a. On the rear side of the base 41, a pair of mounting recesses 41c are formed continuously with the insertion hole 41a. Each mounting recess 41c has a quadrangular outline with the opening edge on the front end side of the insertion hole 41a as the rear end, and is recessed in the upper and lower portions of the right side surface of the base 41 by the thickness of the shaft pressing member 43 described later. . Further, a protrusion 41e protruding rightward is integrally formed at the center of each mounting recess 41c. The protrusion 41e is formed in an axial shape having a circular cross section.

  With reference to FIGS. 5 and 6, an accommodation chamber 41 f for accommodating a hook receiver 42 b of a receiving member 42 to be described later is formed in the central portion of the left side surface of the base 41 as a part of the space. The storage chamber 41f is formed in a rectangular shape that extends in the vertical direction when viewed from the left side. On the side wall surface of the base 41 that forms the storage chamber 41f, two elongated holes 41g extending in the front-rear direction are formed. The long hole 41g is an insertion hole through which a screw member 48 (see FIGS. 9 and 10) for fixing the base 41 to the end surface 4a of the slide door 4 is inserted. The dimension EL (see FIG. 5) in the longitudinal direction (front-rear direction) of each long hole 41g is set to, for example, about 3-4 times the diameter of the screw member 48 in order to make the mounting position of the base 41 adjustable. Yes.

  Of the side wall surface of the base 41 forming the storage chamber 41f, the upper slot 41g is divided into an upper part from a line dividing the upper slot 41g vertically and the lower part from a line dividing the lower slot 41g vertically. The knurled portions 41h are respectively formed. The knurled portion 41h is a portion having fine undulations on the surface by knurling. As is well known, the undulating shape of the knurled portion 41h can take various forms, but in the present embodiment, a number of shapes extending along the vertical direction (that is, the direction perpendicular to the longitudinal direction of the long hole 41g). It has a shape that undulates so as to form a linear ridgeline. As described above, the knurled portion 41h does not need to be provided in the entire region of the base 41 portion at the periphery of the long hole 41g, and may be a partial region thereof. In particular, when the part to be knurled is set in a part of the region as in the present embodiment, the knurled part 41h is not exposed in appearance and the aesthetics are improved. However, if there is no problem in aesthetics or cost, the knurled portion 41 h may be provided in the entire peripheral edge of the long hole 41 g on the side wall surface of the base 41.

  At the time of mounting, the knurled portion 41 h faces the seating surface 48 a of the screw member 48 by inserting the screw member 48 through the long hole 41 g. When a not-shown washer is inserted through the screw member 48, the knurled portion 41h faces the seating surface of this washer. Therefore, the seating surface 48a of the screw member 48 or the seating surface of the washer (not shown) crushes the knurled portion 41h during mounting. Therefore, in the present embodiment, coupled with the fact that the knurled portion 41h is a undulation that forms a linear ridge line along the vertical direction, the movement of the base 41 in the front-rear direction is firmly restricted.

  Furthermore, spring chambers 41 i are formed on both upper and lower sides of the storage chamber 41 f via partition walls 41 n. The spring chamber 41i is a chamber for accommodating a spring member 44 formed in a leaf spring shape. Each spring chamber 41i is formed in a rectangular shape extending in the front-rear direction when viewed from the side. The spring member 44 is a leaf spring whose longitudinal direction is arranged along the front and rear of the base 41 and whose base end side is fixed to the spring chamber 41 i by a screw 46 in a cantilevered manner. A screw hole 41j into which the screw 46 is screwed is formed in front of the spring chamber 41i. In the illustrated example, a rectangular spring retainer 47 is interposed between the screw 46 and the spring member 44.

  As shown in FIG. 6, the storage chamber 41f and the spring chambers 41i are vertically divided by a pair of partition walls 41n that are disposed vertically and extend forward and backward. A bearing portion 41p facing the insertion hole 41a is formed on the right side surface of each partition wall 41n. The bearing portion 41p is recessed in a semicircular shape, and functions as a bearing that supports the shaft portion 42a together with the shaft groove 41b when the shaft portion 42a of the receiving member 42 assembled to the base 41 is pivotally supported by the shaft groove 41b. .

  The material and processing method of the base 41 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the base 41 is preferably a die-cast product from the viewpoints of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  Next, the receiving member 42 will be described with reference to FIGS. 4 and 7A and 7B. 7A and 7B show the state in which the partition wall 41n of the base 41 is omitted and the accommodation chamber 41f and the spring chamber 41i communicate with each other for easy understanding.

  The receiving member 42 includes a shaft portion 42a that is disposed vertically and a hook receiver 42b that is integrated with the shaft portion 42a. The shaft portion 42a is mounted along the top and bottom with respect to the insertion hole 41a of the base 41 from the right side of the base 41, so that both end portions of the shaft portion 42a are pivotally supported by a shaft groove 41b continuous with the insertion hole 41a. The

  The hook receiver 42b is a substantially rectangular frame-shaped part which constitutes a locking structure by engaging with a hook member 83 described later. The hook receiver 42b forms a rectangular locking hole 42c (see FIGS. 11A and 11C). One of the long sides of the hook receiver 42b is integrated with the shaft portion 42a along the longitudinal direction of the shaft portion 42a, so that the hook receiver 42b is formed in a cantilever shape on the shaft portion 42a. In the present embodiment, the hook receiver 42b is formed in a substantially rectangular frame shape, but the specific shape of the hook receiver 42b is not particularly limited, and may be a semicircle, a semi-elliptical shape, It may be formed in a U-shape.

  At the time of assembly, the hook receiver 42b is inserted from the right side of the base 41 into the insertion hole 41a of the base 41 from the front end side, as shown in FIG. As a result, both end portions of the shaft portion 42a are respectively fitted into the shaft grooves 41b and are pivotally supported. The vertical dimension of the hook receiver 42b is set to a length that fits within the vertical dimension of the storage chamber 41f defined by the partition wall 41n of the base 41.

  The receiving member 42 is assembled to the base 41 with the shaft portion 42a being pivotally supported by the shaft groove 41b and the bearing portion 41p of the base 41. The receiving member 42 is displaced between the locked posture (FIGS. 7A and 8A) and the retracted posture (FIGS. 7B and 8B). In the locked position, the hook receiver 42b protrudes from the base 41 with an inclination of approximately 90 ° or more, and when the receiving member 42 is assembled, the hook receiver 42b has a position substantially along the front wall 1a. Thereby, the hook member 83 described later can be engaged with the receiving unit 40 in the hook posture (see FIGS. 10 and 11A to 11C). Therefore, it is possible to provide a locking structure with high operability as compared with a conventional structure using a chain or padlock. On the other hand, in the retracted position, the hook receiver 42 b is accommodated in the accommodation chamber 41 f of the base 41. Thereby, the receiving unit 40 fits compactly and the aesthetics of the slide door 4 are improved. Further, there is no fear that the receiving member 42 will be obstructed when passing through the warehouse 3. A stroke between the locked posture and the retracted posture is defined by the base 41.

  In a state where the receiving member 42 is assembled to the base 41 and the shaft portion 42a is pivotally supported by the shaft groove 41b and the bearing portion 41p of the base 41, a portion of the shaft portion 42a that faces each spring chamber 41i has a corresponding spring. Sleeve portions 42d that rotate together with the shaft portion 42a in the chamber 41i are formed. The sleeve portion 42d bulges more radially than the shaft portion 42a and is concentric with the shaft portion 42a.

  With reference to FIGS. 8A and 8B, the sleeve 42d extends in parallel with the arc-shaped portion 421 and the both ends of the arc-shaped portion 421 in a substantially tangential direction of the shaft portion 42a with respect to the cross section orthogonal to the axial direction. The straight part 422 and the protrusion part 423 which connects the front-end | tip of each straight part 422 are provided, and it is comprised in the shape of a rough rising substantially as a whole.

  The arc-shaped portion 421 has a central angle θ1 set to 180 ° or slightly larger than that, and both ends are configured to be substantially linear. Each linear portion 422 is set such that the central angle θ2 is smaller than the arc-shaped portion 421 and larger than the protruding portion 423. In the present embodiment, the central angle θ2 of each linear portion 422 is set to approximately 60 °. In addition, one of the linear portions 422 extends substantially horizontally with respect to the extending direction of the hook receiver 42b, and the other extends substantially perpendicular to the extending direction of the hook receiver 42b.

  The protrusion 423 has a central angle set smaller than the central angle θ1 of the arcuate portion 421 and the central angle θ2 of the straight portion 422. The protruding portion 423 is formed in an arc shape by chamfering a corner portion in the circumferential direction. The movable range of the protruding portion 423 is set so as to exceed the front-rear direction center line L of the sleeve portion 42d.

  The surface of this protrusion 423 is configured as a cam surface 42e. In other words, the cam surface 42e is constituted by the outer peripheral surface of the rib-shaped portion by notching a part of the sleeve portion 42d and raising another portion into a rib shape around the rotation center O of the shaft portion 42a. Has been. The cam surface 42e is formed at a portion that can receive the urging force of the spring member 44 in the entire stroke between the lock posture and the retracted posture.

  One end portion in the circumferential direction of the rib-like portion forming the cam surface 42e constitutes a first pressure receiving portion 42f. The first pressure receiving portion 42f receives the urging force F1 of the spring member 44 behind the center line L connecting the position where the urging force of the spring member 44 is directed to the rotation center O and the rotation center O. As a result, as shown in FIG. 8 (A), the first pressure receiving portion 42f has a clockwise direction of the shaft portion 42a as viewed from the direction in which the receiving member 42 is biased to the locked posture (see FIG. 8 (A)). ) Force F1 is received from the spring member 44. Therefore, the receiving member 42 is biased and held in the locked posture. When the receiving member 42 is in the locked posture, the hook receiver 42 b faces the front of the opening 3 (see FIG. 1) substantially along the moving direction of the slide door 4. In this state, when the first pressure receiving portion 42f receives the urging force from the spring member 44, the force F1 acts in a direction to urge the hook receiver 42b to the locked posture of the stroke. As a result, the hook receiver 42b is pressed to the locked posture and stops in a stable posture substantially along the moving direction of the slide door 4.

  On the other hand, the other circumferential end of the rib-shaped portion forming the cam surface 42e constitutes a second pressure receiving portion 42g. The second pressure receiving portion 42g receives the urging force F2 of the spring member 44 in front of the center line L when the receiving member 42 is in the retracted posture. As a result, as shown in FIG. 8B, the second pressure receiving portion 42g is rotated counterclockwise of the shaft portion 42a when viewed from the direction in which the receiving member 42 is urged to the retracted position (FIG. 8B). Direction) force F <b> 2 is received from the spring member 44. Therefore, the receiving member 42 is biased and held in the retracted posture. When the receiving member 42 is in the retracted position, the hook receiver 42b is accommodated in the base 41 substantially along the front-rear direction. In this state, when the second pressure receiving portion 42g receives the urging force from the spring member 44, the force F2 acts in a direction to urge the hook receiver 42b to the retracted posture. As a result, the hook receiver 42b is pressed into the retracted posture and is housed in the base 41 in a stable posture.

  The material and processing method of the receiving member 42 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the receiving member 42 is preferably a die-cast product from the viewpoints of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  The shaft pressing member 43 is a member that is fixed to the base 41 and supports the receiving member 42 together with the base 41 during assembly. The shaft pressing member 43 is a plate-like member that has a generally “concave” -shaped appearance with the outline of the insertion hole 41 a and the mounting recess 41 c as seen from the side surface of the base 41. The shaft pressing member 43 integrally includes a pair of attachment pieces 43a corresponding to the mounting recess 41c and a bearing portion 43b corresponding to the insertion hole 41a. Each attachment piece 43 a has a quadrangular outline that matches the outline of the mounting recess 41 c of the base 41. Each attachment piece 43a forms an insertion hole 43c for a protrusion 41e protruding from the mounting recess 41c. Further, the bearing portion 43b has a rectangular outline that fits the outline of the insertion hole 41a of the base 41 and closes the insertion hole 41a and the shaft groove 41b formed on the inner side. Further, at the time of assembly, a bearing surface that is slidably in contact with the sleeve portion 42 d is formed at a portion where the bearing portion 43 b faces the sleeve portion 42 d of the receiving member 42. After the receiving member 42 is assembled to the base 41, the shaft pressing member 43 is assembled from the right side of the base 41, whereby the pair of mounting pieces 43a are fitted into the mounting recesses 41c, and the bearing portions 43b are fitted into the insertion holes 41a. Accordingly, as shown in FIGS. 7A and 7B, the right side surface of the shaft pressing member 43 is assembled flush with the right side surface of the base 41. Moreover, the bearing part 43b receives the outer peripheral surface of the sleeve part 42d of the receiving member 42, and functions as a bearing member. Furthermore, the protrusion 41e of the mounting recess 41c is crushed by pressing or the like after assembly. In the illustrated example, the insertion hole 43c of each mounting piece 43a is chamfered on the right side surface in a tapered shape. Therefore, the end portion of the collapsed protrusion 41e extends to the chamfered portion of the insertion hole 43c, and the shaft pressing member 43 is fixed.

  Referring to FIGS. 7A, 7B, 8A, and 8B, an arcuate surface that receives the peripheral surfaces of shaft portion 42a and sleeve portion 42d is formed on the left side surface of shaft pressing member 43. Yes. The arc surface forms a bearing that supports the shaft portion 42a in cooperation with the shaft groove 41b.

  The material and processing method of the shaft pressing member 43 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the shaft pressing member 43 is preferably a die-cast product from the viewpoint of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  4 and 7A and 7B, the spring member 44 is a leaf spring disposed one by one for each spring chamber 41i. The distal end portion of the spring member 44 biases the cam surface 42e of the sleeve portion 42d of the receiving member 42 in each of the locked posture and the retracted posture.

  Next, with reference to FIGS. 4 and 7A and 7B, the cover 45 is a rectangular outer shell member that has a side plate portion 45a and a peripheral wall portion 45b and covers the base 41 from the left side. . The cover 45 forms an opening 45c. The opening 45c is wide open so that the center portion opens left and right, and the rear side is also open. The vertical dimension of the opening 45c is set to a dimension that opens only the accommodation chamber 41f of the base 41. For this reason, the receiving member 42 is configured to be able to protrude outside the base 41 through the opening 45c.

  The side plate portion 45 a of the cover 45 is a plate-like part that covers the side surface of the base 41.

  The peripheral wall portion 45 b of the cover 45 is a portion that extends from the peripheral edge portion of the side plate portion 45 a and covers the outer peripheral surface of the base 41. A plurality of locking claws 45e and 45f are formed at appropriate positions on the peripheral wall portion 45b. On the other hand, grooves 41k and 41m for locking the locking claws 45e and 45f are formed on the outer periphery of the base 41. Then, as shown in FIG. 4, by engaging the cover 45 from the left side surface of the base 41, the locking claws 45 e and 45 f are locked to the peripheral portions of the grooves 41 k and 41 m, and the cover 45 is fixed to the base 41. And integrated.

  The material and processing method of the cover 45 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the cover 45 is preferably a die-cast product from the viewpoint of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  Next, the lock unit 80 will be described. The lock unit 80 forms a locking structure of the slide door 4 in cooperation with the receiving unit 40. In order to perform such a function, the lock unit 80 is fixed to the front wall 1 a at the same height as the receiving unit 40.

  Referring to FIGS. 3, 9, and 10, lock unit 80 is a metal member that includes base member 81, support member 82, hook member 83, key unit 84, and cover 85. .

  The base member 81 is disposed downstream of the vertical portion of the frame member 15 (on the left side of the frame member 15 in FIG. 3) in the closing direction of the slide door 4, and is in contact with the frame member 15 at this position. The base member 81 is fixed to the front wall 1a by a bolt 86 as an attachment member. The bolt 86 extends forward through the front wall 1 a from the back side of the front wall 1 a, that is, from the inside of the refrigerator 1, and is screwed into the threaded portion 81 a of the base member 81. A handle 86 a is fixed to the base of the bolt 86. The operator can grip the handle 86a and rotate the bolt 86 to unscrew the bolt 86 from the base member 81 and pull it backward. For this reason, the base member 81 can be removed from the inside of the refrigerator 1. In the present embodiment, the base member 81 is fixed to the front wall 1a in contact with the side surface of the frame member 15. Therefore, even if there is only one bolt 86, there is no fear that the base member 81 is rotated when the bolt 86 is rotated.

  The material and processing method of the base member 81 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the base member 81 is preferably a die-cast product from the viewpoints of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  The support member 82 is a structure that is fixed to the front portion of the base member 81, protrudes forward from the base member 81, and holds the hook member 83 and the key unit 84 together with the base member 81. First, a shaft 87 is attached to the support member 82 to support the hook member 83. The shaft 87 is fixed to the support member 82 along the vertical axis, and supports the hook member 83 about the vertical line.

  Referring to FIGS. 3, 9, 10, and 11 (A) to (C), the hook member 83 includes a boss portion 83 a that is pivotally supported by the shaft 87 and a tangential direction of the boss portion 83 a. This is a metal member in which a flange 83b protruding along the boss 83a and a connecting portion 83c protruding along another tangential direction having a predetermined angle from the boss 83a are integrated. As shown in FIG. 3 and FIG. 10, the hook member 83 is in a locked posture on the distal end side of the collar portion 83 b by rotating the boss portion 83 a around the shaft 87 in the state where the slide door 4 is closed. It is configured so that it can be rotated in a direction close to the receiving member 42 (counterclockwise direction in FIGS. 9 and 10), and the hook 83b can be locked to the hook receiver 42b of the receiving member 42.

  The material and processing method of the hook member 83 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the hook member 83 is preferably a die-cast product from the viewpoint of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  The boss portion 83 a is a portion that is pivotally supported around the vertical line by the shaft 87. The collar portion 83b is a portion in which an arm portion 83d provided in a cantilever manner with respect to the boss portion 83a and a claw portion 83e formed at the distal end portion of the arm portion 83d are integrally formed. The arm part 83d is along the tangential direction of the boss part 83a. When the boss portion 83a rotates around the shaft 87, the arm portion 83d also rotates integrally with the boss portion 83a. The range in which the arm portion 83d rotates is set to a range (for example, approximately 10 °) defined by a connecting portion 83c and a key unit 84 described later. In the rotation direction in which the distal end side of the collar 83b is close to the receiving member 42 in the locked posture within the rotation range of the arm portion 83d, the claw portion 83e is located downstream from the distal end portion of the arm portion 83d in the rotation direction. Protrusively. The planar shape (see FIG. 11B) of the claw portion 83e is inclined in a direction in which the tip becomes narrower toward the downstream side in the rotation direction. In addition, an arc surface 83f (see FIGS. 11A and 11C) along an arc around the horizontal axis is formed on the outer surface of the claw portion 83e (the surface facing the distal end side of the arm portion 83d). Furthermore, a locking surface 83g that is bent substantially at right angles to the arm portion 83d is formed on the inner side surface of the claw portion 83e (the surface facing the boss portion 83a side of the arm portion 83d).

  The connecting portion 83c is a portion protruding in a cantilever shape horizontally from the boss portion 83a on the opposite side of the arm portion 83d across the boss portion 83a. A spring seat 83h is formed at a portion where the connecting portion 83c faces the base member 81 when assembled. The base member 81 is formed with a spring seat 81b facing the spring seat 83h. A compression coil spring 88 is interposed between the spring seat 81b and the spring seat 83h of the connecting portion 83c. The coil spring 88 urges the hook member 83 in a direction (a counterclockwise direction in FIGS. 9 and 10) in which the claw portion 83e of the flange portion 83b is close to the receiving member 42 in the locked posture. In addition, a cam surface 83 i for receiving a force from the key unit 84 is formed at a portion where the connecting portion 83 c faces away from the base member 81 when assembled. The cam surface 83i engages with the cam member 90 of the key unit 84 at the time of assembly and receives a force from the cam member 90, thereby turning the entire hook member 83 around the shaft 87 with the shaft 87 as a fulcrum. Function as. Various shapes of the cam surface 83i can be considered in consideration of the key unit 84, but the cam surface 83i in this embodiment is an arm portion so as to match the shape of the cam surface 90a of the key unit 84 described later. It is inclined at a predetermined angle around the shaft 87 with respect to the longitudinal direction of 83d.

  The key unit 84 includes a cam member 90 that engages with the cam surface 83 i of the hook member 83, and a key cylinder 91 that supports the cam member 90. The cam member 90 has a circular cross section as a whole, and has an obliquely cut cylindrical shape with one end inclined. An inclined end portion of the cam member 90 forms a cam surface 90 a that is always in contact with the cam surface 83 i of the hook member 83.

  The key cylinder 91 has an inner cylinder that holds the cam member 90 and an outer cylinder that rotatably supports the inner cylinder, and a key (not shown) is placed in a key groove formed at the tip of the inner cylinder. This is a known unit for rotating the cam member 90 around the center line from the outside by inserting and rotating it. In the cam member 90, the cam surface 90 a pushes the cam surface 83 i of the hook member 83 backward by the above-described rotation operation, and the cam member 90 is substantially parallel to the cam surface 83 i of the hook member 83. Then, it rotates between the locking posture (the posture of FIG. 10) for releasing the pushing into the cam surface 83i.

  When the cam surface 90 a is in the unlocking posture, the connecting portion 83 c of the hook member 83 is pushed backward against the urging force of the compression coil spring 88. For this reason, the claw part 83e of the collar part 83b takes the detached posture rotated in the direction away from the receiving member 42, as shown in FIG. In the disengagement posture shown in FIG. 9, the claw portion 83e is disengaged from the locking hole 42c of the receiving member 42 in the lock posture, and the locking of the slide door 4 is released.

  On the other hand, when the cam surface 90 a is in the locked posture, the hook member 83 takes an engaged posture by the urging force of the compression coil spring 88. In this engagement posture, the claw portion 83e of the collar portion 83b is rotated in the direction approaching the receiving member 42 as shown in FIG. Therefore, when the receiving member 42 is in the locked position in advance, when the slide door 4 closes the warehouse 3, the claw portion 83 e enters the locking hole 42 c of the receiving member 42, and the hook member 83 becomes the receiving member. The sliding door 4 can be locked by being engaged with 42.

  The cover 85 is a metal structure that forms the outer shell of the lock unit 80. The cover 85 has a sleeve 82a that firmly holds the key cylinder 91 of the key unit 84 at the front. In the illustrated example, the cover 85 is detachably attached to the base member 81. As a result, a plurality of types of covers 85 having different specifications can be attached to the same base member 81 to improve the versatility of the base member 81 and to select a cover 85 that meets various needs. An opening 85 a is formed on the right side surface of the cover 85. The opening 85a is open with a size that allows the receiving member 42 of the receiving unit 40 to be inserted and removed.

  The material and processing method of the cover 85 as described above can be appropriately selected in consideration of strength and the like. In the present embodiment, the cover 85 is preferably a die-cast product from the viewpoints of durability and corrosion resistance. In this case, as a material of the die-cast product, for example, an aluminum alloy is preferable. Moreover, in order to obtain thin and precise accuracy as well as strength, the material of the die cast product is particularly preferably a zinc alloy.

  Next, a state where the receiving unit 40 and the lock unit 80 are assembled to the refrigerator 1 will be described.

  Referring to FIG. 9, the receiving unit 40 is fixed to the closing direction end surface 4 a on the left side of the sliding door 4. Specifically, a screw member 48 is inserted into each long hole 41 g of the base 41 from the left side surface and screwed into a screw hole 4 b formed in the slide door 4. At this time, the receiving unit 40 is disposed so that each of the long holes 41 g extends along the front-rear direction, and is fixed by the screw member 48. Therefore, the mounting position of the base 41 can be adjusted by changing the position tightened by the rear screw member 48 along the longitudinal direction of the long hole 41g.

  On the other hand, the lock unit 80 is disposed on the left side of the frame member 15 and is fixed from the inside of the front wall 1 a by a bolt 86. Although the frame member 15 protrudes forward, the cover 85 protrudes forward of the frame member 15 along the outline of the frame member when viewed in plan. The opening of the cover 85 opens toward the slide door 4 in front of the frame member 15.

  Next, operations of the receiving unit 40 and the lock unit 80 will be described.

  When locking, the receiving member 42 is previously displaced from the retracted position shown in FIG. 9 to the locked position. As described above, since the opening 45c is formed in the cover 45 of the receiving unit 40, the operator easily retracts the receiving member 42 by gripping and rotating the receiving member 42 from the opening 45c. It can be displaced from the posture to the locked posture.

  In this operation, when the receiving member 42 exceeds the center line L shown in FIGS. 7A, 7B, 8A, and 8B, the urging force of the spring member 44 retracts the receiving member 42. Shift from the direction biasing to the posture to the direction biasing to the lock posture. After the center line L is exceeded, the posture of the receiving member 42 can be displaced to the locked posture while being biased by the biasing force of the spring member 44. Therefore, the operator can surely displace the posture of the receiving member 42 while feeling the switching of the urging force.

  After the receiving member 42 is displaced to the locked position, when the operator moves the slide door 4 to the left side and closes the warehouse 3, the rear surface of the slide door 4 is the front of the frame member 15 as shown in FIG. 10. Stop at the position facing you. In this state, the seal member 16 fixed to the slide door 4 is pressed to the front of the frame member 15 in a somewhat bent state, and the gap between the slide door 4 and the frame member 15 is sealed. Further, the receiving member 42 of the receiving unit 40 stops at a position where the tip end partly enters the opening 85 a of the lock unit 80. In this state, when the operator rotates the key unit 84 of the lock unit 80 with a key (not shown) and displaces the cam member 90 from the unlocked posture of FIG. 9 to the locked posture of FIG. Is displaced from the disengagement posture of FIG. 9 to the engagement posture. As a result, the hook portion 83 b of the hook member 83 enters the locking hole 42 c of the receiving member 42, and the hook member 83 engages with the receiving member 42. The sliding door 4 is locked by the engagement between the hook member 83 and the receiving member 42. In this embodiment, an arc surface 83f protruding in an arc shape is formed at the free end portion of the flange portion 83b of the hook member 83, and this arc surface 83f is formed when the hook member 83 is in the engagement posture. Furthermore, it faces the hook receiver 42b of the receiving member 42 in the locked posture. On the other hand, the tip portion of the hook receiver 42b is formed in an arc shape protruding from the tip side. Furthermore, the hook member 83 is biased from the disengagement posture side to the engagement posture exclusively by the biasing force of the compression coil spring 88, and in the direction of displacement from the engagement posture to the disengagement posture, the cam member Not subject to 90 regulations. Therefore, when the hook member 83 is in the engaged posture, the hook receiver 42b of the receiving member 42 in the locked posture moves to the left side (the direction in which the slide door 4 is closed) and abuts on the arc surface 83f of the hook member 83. The hook member 83 is temporarily displaced to the retracted position by the pushing force of the hook receiver 42b, and then the claw portion 83e of the collar portion 83b gets over the tip portion of the hook receiver 42b and engages with the locking hole 42c. Works. As a result, at the time of locking, it is possible to lock automatically by simply closing the sliding door 4 with the hook member 83 displaced to the locked posture.

  By the way, if the slide door 4 is involuntarily locked when an operator or the like is in the refrigerator 1, the handle 86a of the bolt 86 is turned and the bolt 86 is moved into the refrigerator. By pulling it out, the lock unit 80 can be removed. As illustrated, the claw portion 83e of the hook member 83 is engaged with the receiving member 42 toward the front of the front wall 1a. Therefore, the behavior of the lock unit 80 when the lock unit 80 is removed functions so that the hook member 83 is detached from the receiving member 42 as it is. Therefore, even in an emergency where an operator is confined in the warehouse, the lock can be released quickly and reliably.

  As described above, in the present embodiment, the receiving unit 40 as described above is provided, and the locking unit that forms the locking means in cooperation with the receiving unit 40 and the receiving unit 40 for locking the sliding door 4 of the refrigerator 1. The sliding door 4 is provided by using the receiving unit 40 which can obtain a click feeling when the receiving member 42 is operated, and the sliding door 4 is locked. The security of the refrigerator 1 can be ensured. Therefore, like the conventional product, the operability at the time of locking is improved and the appearance is improved.

  In addition, when the receiving member 42 is in the locked posture, the urging force of the spring member 44 is transmitted from the first pressure receiving portion 42f to the receiving member 42, and the receiving member 42 is shown in FIGS. As shown in FIG. On the other hand, when the receiving member 42 is in the retracted position, the urging force of the spring member 44 is transmitted from the second pressure receiving portion 42g to the receiving member 42, and the receiving member 42 is shown in FIGS. 7B and 8B. As shown in FIG. 4, the retracted posture is applied. Therefore, the posture of the receiving member 42 can be stabilized by urging the receiving member 42 with the spring member 44. Moreover, every time the portion receiving the biasing force of the spring member 44 is switched between the first pressure receiving portion 42f and the second pressure receiving portion 42g in the process of switching the posture of the receiving member 42 between the locked posture and the retracted posture. In addition, the operator can sense that the urging force of the spring member 44 is switched (so-called click feeling), and it is possible to ensure the reliability of the operation.

  Moreover, in this embodiment, the receiving member 42 can be protruded from the base 41 only when locking is required. On the other hand, when the slide door 4 is opening the warehouse 3, the receiving member 42 can be laid down in the base 41 to take the retracted posture. Therefore, not only the aesthetics of the refrigerator 1 are improved, but there is no possibility that the receiving member 42 will be disturbed when the warehouse 3 is passed.

  Furthermore, since the posture of the receiving member 42 accommodated in the receiving unit 40 is configured to be displaceable, it is necessary to provide a recess (embedded portion) for allowing the receiving member 42 to appear and retract on the slide door 4 and the front wall 1a. Absent. Therefore, there exists an advantage that construction can be performed easily and retrofitting becomes easy also with respect to the existing refrigerator 1. FIG.

  In the present embodiment, the spring member 44 is arranged in a posture along the receiving member 42 in the retracted posture, and one end is fixed to the base 41 and the other end presses the cam surface 42e. It consists of For this reason, in this embodiment, since the spring member 44 comprised by the leaf | plate spring is arrange | positioned with the attitude | position along the receiving member 42 in a retracted attitude | position, it contributes to thickness reduction of the base 41 so that the user of the refrigerator 1 may not be disturbed. Can improve aesthetics.

  Further, in the present embodiment, the shaft portion 42a supports the receiving member 42 so as to be rotatable around the vertical axis, and the receiving member 42 protrudes in a locking posture along the moving direction of the slide door 4. The hook member 83 includes an arm portion that rotates about a vertical line, and a claw portion 83e that protrudes in the rotation direction from the tip portion of the arm portion, and is close to the front wall 1a with respect to the receiving member 42. By rotating in the direction, the disengagement posture is displaced to the engagement posture. Therefore, in the present embodiment, the same receiving unit 40 and lock unit 80 can be employed regardless of whether the sliding door 4 is a left-opening door or a right-opening door. For this reason, general versatility can be given to the product, and parts management and distribution are improved.

  Further, in the present embodiment, the receiving unit 40 is attached to the end surface 4a in the closing direction of the slide door 4, and the lock unit 80 is operable to remove the lock unit 80 from the front wall 1a from the inside of the front wall 1a. The bolt 86 is fixed to the outside of the front wall 1a. For this reason, in this embodiment, when the operator or the like is in the refrigerator 1, when the worker or the like is involuntarily locked, the operator or the like operates the bolt 86 from the refrigerator 1, thereby 80 can be forcibly detached from the front wall 1a. In the present embodiment, the hook member is configured to be displaced from the disengagement posture to the engagement posture by rotating in the direction approaching the front wall 1a with respect to the receiving member 42. The direction when it comes off from the front wall 1a is along the direction in which the hook member 83 moves from the engagement posture to the separation posture. Therefore, the operation when the lock unit 80 is detached from the front wall 1a acts as an operation for moving the hook member 83 from the engagement posture to the separation posture. Thereby, an operator etc. can cancel | release the lock | rock of the locking device 20 out of the refrigerator 1, and can go out of the refrigerator 1 at the time of emergency.

  Further, in the above-described embodiment, since the base 41 constituting a part of the housing is configured to be able to be accommodated in the receiving unit 42 that is displaced in the retracted posture, the receiving member 42 is provided in the sliding door 4. There is no need to provide a concave portion (embedded portion) for intruding. Therefore, there exists an advantage that construction can be performed easily and retrofitting becomes easy also with respect to the existing refrigerator 1. FIG.

  The present invention is not limited to the embodiment described above, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, the receiving unit 40 is attached to the end face 4a of the slide door 4 and the lock unit 80 is attached to the front wall 1a, but the sliding door key disclosed in Patent Document 1 is adopted as the lock unit. And while this is provided in the slide door 4, you may attach the receiving unit 40 to the front wall 1a. However, when the lock unit 80 is attached to the front wall 1a and the receiving unit 40 is attached to the end surface 4a of the slide door 4 as in the present embodiment, an emergency unlocking mechanism using a bolt 86 as an attachment member is provided. Since it can be configured more easily, it is preferable that the lock unit 80 is attached to the front wall 1a.

  Moreover, it is preferable that the axial part of the receiving unit 40 is attached to the base 41 around the vertical axis as in the above-described embodiment. However, depending on the mode of the lock unit, not only the vertical axis but also a person who supports the receiving member (hook receiver) so as to be rotatable about the horizontal axis may be used.

  In addition, the spring member 44 is preferably a leaf spring from the viewpoint of thinning and the like, but is not limited to the leaf spring, and for example, a compression coil spring may be employed. Further, a configuration in which a torsion coil spring is built in the base 41 and one end thereof is locked to the base 41 while the other end is locked to the cam surface 42e of the shaft portion 42a may be employed.

  In addition, when attaching the spring member 44 to the housing, it is preferable to attach the spring member 44 to the base 41 as in the above-described embodiment. A configuration may be adopted in which the free end is engaged with the cam surface 42e of the shaft portion 42a to apply a biasing force to the shaft portion 42a.

DESCRIPTION OF SYMBOLS 1 Refrigerator 1a Front wall 3 Warehouse outlet 4 Sliding door 4a Close direction end surface 20 Locking device 40 Receiving unit 41 Base (element of housing)
42 receiving member 42a shaft portion 42e cam surface 42f first pressure receiving portion 42g second pressure receiving portion 80 lock unit 83 hook member 86 bolt (an example of an attachment member)
F1 Energizing force F2 Energizing force L Dividing line O Center of rotation

Claims (5)

A sliding door of a refrigerator provided in a refrigerator having a sliding door that opens and closes the warehouse opening by reciprocating along a wall surface in which the warehouse opening is formed, and locks the sliding door in cooperation with a lock unit. A locking receiver unit,
A casing fixed to either one of the end surface of the sliding door in the closing direction and the wall surface;
A receiver that includes a shaft portion that is rotatably supported by the housing, and that can be rotated between a locking posture protruding from the housing so as to be engaged with the lock unit and a retracting posture lying in the housing. Members,
A spring member attached to the housing and biasing the receiving member in each of the locking posture and the retracting posture;
The shaft portion includes a cam surface that contacts the spring member;
The cam surface includes a first pressure receiving portion configured to receive a biasing force of the spring member that biases the receiving member to the locking posture when the receiving member is in a locking posture, and the receiving member includes A second pressure receiving portion configured to receive a biasing force of the spring member that biases the receiving member to the retracted posture when in the retracted posture. Receiving unit. In the refrigerator sliding door locking receiver unit according to claim 1,
The spring member is arranged in a posture along the receiving member in the retracted posture, and is configured by a leaf spring whose one end is fixed to the housing and the other end presses the cam surface. A receiving unit for locking a sliding door of a refrigerator. The receiving unit for sliding door locking of the refrigerator according to claim 1 or 2,
A locking device comprising: a lock unit that forms locking means in cooperation with the sliding door locking receiving unit of the refrigerator,
The lock unit includes a hook member that is displaced between an engagement posture that engages with the receiving member and a disengagement posture that disengages from the receiving member, and one of the closing direction end surface of the slide door and the wall surface. Locking device characterized by being fixed to The locking device according to claim 3,
The receiving unit is attached to an end surface of the sliding door in a closing direction;
The locking unit is fixed to the wall surface by an attachment member capable of detaching the lock unit from the wall surface from the refrigerator. The locking device according to claim 4,
The shaft portion is supported by the housing around a vertical axis,
The receiving member protrudes in a locked posture along the moving direction of the slide door,
The hook member includes an arm portion that rotates about a vertical line, and a claw portion that protrudes in a rotation direction from a tip portion of the arm portion, and rotates in a direction close to the wall surface with respect to the receiving member. Thus, the locking device is displaced from the disengagement posture to the engagement posture.

Images