JP2016196964A - Lock device for refrigerator slide door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a lock device for a refrigerator slide door capable of supporting the positioning between a slide door and a wall surface.SOLUTION: A locking device 20 comprises: a receiving unit 40 including a receiving member 42; and a lock unit 80 including a hook member 83 for engaging with the receiving member 42. The receiving unit 40 further contains a screw member 48. The screw member 48 inserts a long hole 41g formed in the housing of the receiving unit 40, and fixes the receiving unit 40 through the housing on the end face 4a of the slide door 4. The long hole 41g and the screw member 48 have a function to adjust the position, at which the receiving unit 40 is attached to a closing direction end surface 4a so that the position of the receiving member 42 may fit the hook member 83 in accordance with an opposing distance between the front wall and the slide door 4, in a case where the opposing distance is adjusted when the slide door 4 closes a refrigerator opening.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a locking device for a sliding door for a refrigerator.

  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. In general, the door and the slide door are connected using a chain or a padlock. Further, 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.

  By the way, generally the inside (compartment room) of a commercial refrigerator is cooled to a low temperature compared to the outside temperature. Therefore, a seal member is disposed between the slide door and the wall surface on which the warehouse opening is formed. The seal member is fixed along, for example, four sides on the back surface of the slide door. When the sliding door is closed, the seal member comes into pressure contact with the wall surface on which the storage opening is formed. Thereby, a sealing member seals the clearance gap between a warehouse opening and the said wall surface.

  For example, as disclosed in Patent Document 2, a guide rail having an inclination is used so that the slide door moves closer to the wall surface as the slide door moves in the closing direction in order to ensure airtightness by the seal member. In some cases.

JP-A-8-21682 Japanese Patent Laid-Open No. 11-50730

  When the sliding door is locked with a chain, the operability and appearance are deteriorated. On the other hand, when the apparatus disclosed in Patent Document 1 is used, operability and appearance are improved.

  However, when the seal member is deteriorated with time and deformed, the sealing performance of the seal member is deteriorated. Therefore, in the sliding door as disclosed in Patent Document 2, in order to ensure sealing performance when the sealing member is deformed due to deterioration with time, the sliding door is adjusted in the front-rear direction so that the sliding door faces the wall surface. The interval may change. In such a case, when the apparatus of Patent Document 1 is used, the positions of the receiving metal fitting and the sliding door key may be shifted, and the hook of the sliding door key and the receiving metal seat of the receiving metal metal may not be engaged. .

  The present invention has been made in view of the above-described problems, and provides a locking device for a slide door for a refrigerator that has good operability and appearance and can be used for position adjustment in the front-rear direction between the slide door and a wall surface. It is an issue.

  In order to solve the above-mentioned problems, the present invention reciprocates along the wall surface on which the warehouse opening is formed, thereby opening and closing the warehouse opening and adjusting the facing distance from the wall surface to adjust the warehouse opening. A locking device for a sliding door for a refrigerator provided in a refrigerator provided with a sliding door capable of ensuring a sealing property between the wall surface when closed and for locking the sliding door, the closing direction of the sliding door A receiving unit that includes a receiving member that protrudes along the edge, a housing that supports the receiving member, and a screw member that fixes the housing to the end surface in the closing direction of the slide door, and an engagement posture that engages with the receiving member And a lock unit that is fixed to the wall surface and includes a hook member that is displaced between the receiving member and a disengagement posture that separates from the receiving member, and the housing has a direction in which the wall surface and the slide door face each other Along A long hole that extends and through which the screw member is inserted is formed, and when the facing interval is adjusted, the receiving unit has a relative position of the elongated hole with respect to the screw member in accordance with the adjusted facing interval. The sliding door locking device for a refrigerator is characterized in that the position of the receiving member is adapted to the hook member when the position is changed.

  In this aspect, when the sliding door closes the storage door, the sliding door with the closed storage door is locked by engaging the receiving member of the receiving unit and the hook member of the lock unit. It was possible to ensure the security of the refrigerator. By this receiving unit and the lock unit, the operability at the time of locking is enhanced and the appearance is improved as compared with the case of locking using a chain or padlock as in the prior art. In addition, in order to ensure sealing performance, when the facing distance between the slide door and the wall surface is adjusted, the receiving unit changes the relative positions of the screw member and the long hole according to the adjusted facing distance. This allows the position of the receiving member to be adapted to the hook member. In addition, the operation of adjusting the position of the receiving unit with respect to the hook member in accordance with the facing distance between the slide door and the wall surface can be realized exclusively by the operation of changing the relative position of the screw member and the long hole. Therefore, the position where the receiving member and the hook member engage with each other can be adjusted with a simple and easy-to-implement mechanism. Therefore, it is possible to provide an inexpensive product.

  In the locking device according to a preferred aspect, the housing faces the seat surface of a screw member inserted through the elongated hole, or the seat surface of a washer interposed between the seat surface and the housing, and A knurled portion having fine undulations in the facing direction is formed along the elongated hole. Note that the knurled portion does not have to be provided in the entire region of the casing portion at the periphery of the long hole, and may be a partial region. In this aspect, when the screw member is fastened, the seat surface of the screw member or the seat surface of the washer interposed between the seat surface and the knurled portion collapses the knurled portion having fine undulations. Therefore, the force with which the screw member tightens the housing can be maintained high for a long period of time, and the housing can be firmly fixed to the end surface of the sliding door in the closing direction. On the other hand, when the screw member is loosened, the tightening force of the screw member is easily released. Therefore, it is possible to easily perform an operation of adjusting the position of the casing by moving the casing. On the other hand, when the screw member is tightened again after the adjustment of the housing, the seat surface of the screw member or the seat surface of the washer crushes the knurled portion again, so that a high tightening force can be obtained.

  In the locking device according to a preferred aspect, the receiving member includes a shaft portion that rotates about a vertical line, and stands up with respect to the end surface of the slide door to protrude from the end surface and the slide door. By tilting with respect to the end surface side, it is possible to rotate between the retracted posture retracting to the wall surface side. In this aspect, the receiving member can be raised with respect to the end surface of the sliding door in the closing direction only when locking is required. On the other hand, when the slide door is open, the receiving member can be laid down with respect to the end surface side in the closing direction of the slide door to take the 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 the locking device according to a preferred aspect, the receiving unit includes a spring member that is attached to the housing and biases the receiving member in each of the locking posture and the retracting posture, and the shaft portion includes the spring. A cam surface abutting on the member, wherein the cam surface is 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 the locking posture. And a second pressure receiving part configured to receive a biasing force of the spring member that biases the receiving member to the retracted position when the receiving member is in the retracted position. In this aspect, 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 (obtains a so-called click feeling), and can ensure the reliability of the operation.

  In the locking device according to a preferred aspect, 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.

  In the locking device according to a preferred aspect, the lock unit is fixed to the outside of the wall surface by an attachment member capable of detaching the lock unit from the wall surface from the inside of the wall surface. 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. In this aspect, since the hook member is configured to be displaced from the disengagement posture to the engagement posture by rotating in the direction approaching the wall surface with respect to the receiving member, the lock unit is detached from the wall surface. The direction of the time is along the direction in which the hook member moves from the engagement posture to the separation posture. Therefore, the operation when the lock unit is detached from the wall surface acts as an operation for moving the hook member from the engagement posture to the separation posture. 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.

  As described above, according to the present invention, the operability at the time of locking is improved and the appearance is improved by the receiving unit and the lock unit as compared with the case of locking using a chain or a padlock as in the past. In addition, in order to ensure the sealing performance by the sliding door, when the facing distance between the sliding door and the wall surface is changed, the position where the receiving member engages with the hook member is adapted, and thus the sliding door and the wall surface are There is a remarkable effect that it is possible to correspond to the position adjustment in the front-rear direction.

  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. It is sectional drawing for demonstrating the effect | action of the locking device which concerns on embodiment of FIG. It is the left side expanded partial schematic diagram of the housing | casing of the receiving unit which concerns on the modification of embodiment of FIG. It is a cross-sectional partial schematic diagram of the housing | casing of the receiving unit which concerns on another modification of embodiment of FIG.

  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 diameter Fd of the seal member 16 in the free state and the deflection amount p when the seal member 16 is compressed are the specifications or standards of the refrigerator 1 (the distance between the front wall 1a and the slide door 4 that are initially set) The sliding door 4 is closed based on the material of the sealing member 16, the area when the sealing member 16 presses the frame member 15 when the sealing member 16 is compressed, the pressing force, etc. Sometimes, it is determined as appropriate in consideration of conditions necessary for ensuring sealing performance.

  By the way, when the seal member 16 undergoes plastic deformation due to deterioration over time, the diameter Fd of the seal member 16 gradually decreases, and accordingly, the deflection amount p also decreases. When the bending amount p decreases, the area where the seal member 16 contacts the frame member 15 is reduced, and the pressing force when the seal member 16 presses the frame member 15 is also reduced, resulting in a decrease in sealing performance. When the deterioration of the seal member 16 becomes large, the seal member 16 needs to be replaced. However, the replacement is not always easy, and the seal member 16 may not be replaced due to the structure. On the other hand, when the degree of deterioration of the seal member 16 is small, by reducing the facing distance D, sealing performance can be ensured and the seal member 16 can be used over a long period of time. Therefore, in the present embodiment, when the seal member 16 is plastically deformed and the deterioration of the seal member 16 is determined to be within a predetermined range, the facing distance D is changed as described later. By doing so, a measure for compensating for the reduction amount of the bending amount p accompanying plastic deformation and ensuring the sealing property is taken. Note that the degree of deterioration of the seal member 16 is determined in consideration of the degree of deformation (deformed dimension) of the seal member 16 and the facing distance D.

  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.

  In the present embodiment, by using a feed screw mechanism or the like, the position where the L-shaped mounting bracket 10 is attached to the front wall 1a, and the upper pressing mechanism 5 and the lower pressing mechanism 6 are set to a predetermined length (for example, 10 mm). ) Can be adjusted.

  By adjusting the mounting position of these mounting brackets 10 and the upper pressing mechanism 5 and the lower pressing mechanism 6, the front and rear between the front wall 1 a and the sliding door 4 when the sliding door 4 closes the warehouse 3. The facing distance D can be adjusted. Thereby, in this embodiment, when the sliding door 4 closes the storehouse 3, the position where the seal member 16 contacts the front surface of the frame member 15 of the storehouse 3 can be adjusted. Even when plastic deformation occurs in the seal member 16 and the deflection amount p of the seal member 16 changes, the facing distance D (see FIG. 12) between the warehouse 3 and the slide door 4 is reliably sealed, and airtightness is improved. It becomes possible to hold.

  The adjustment value d set for changing the facing distance D is the specification or standard of the refrigerator 1, various conditions necessary for ensuring the sealing performance when the slide door 4 is closed, and the specification of the seal member 16. (For example, based on the diameter of the seal member 16 and the reaction force of the seal member 16 after plastic deformation (change in pressing force when the frame member 15 is pressed when the seal member 16 is compressed) or the like) Is done.

  In addition, when the specification or standard of the refrigerator 1 and various conditions necessary for ensuring the sealing performance when the sliding door 4 is closed are determined, the material of the sealing member 16 and the sealing member in a free state When the diameter Fd of 16 is determined, the maximum dimension of the adjustment value d can be determined by a ratio with respect to the diameter Fd of the seal member 16.

  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 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 housing 41, a receiving member 42 held by the housing 41, and the receiving member 42 in cooperation with the housing 41. A shaft pressing member 43 to be held, a spring member 44 attached to the housing 41 and biasing the receiving member 42 held by the housing 41, a cover 45 covering the outer periphery of the housing 41, and the housing 41 And a screw member 48 that is fixed to the end surface of the sliding door 4 in the closing direction.

  The casing 41 is a metal structure having a rectangular shape in a side view and having a space (accommodating chamber 41 f and spring chamber 41 i) for accommodating the receiving member 42. The long side of the housing 41 is arranged along the vertical direction. The short side of the housing 41 is arranged along the front-rear direction. The left and right thicknesses of the housing 41 are set to a dimension necessary and sufficient to accommodate the receiving member 42. On the rear side of the housing 41, an insertion hole 41 a that is opened in a rectangular shape extending in the vertical direction is formed. 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 housing 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 housing 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 housing 41 by the plate thickness of a shaft pressing member 43 described later. Yes. 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 that accommodates a hook receiver 42 b of a receiving member 42 described later is formed as a part of the space in the central portion of the left side surface of the housing 41. 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 housing 41 forming the housing chamber 41f, two elongated holes 41g extending in the front-rear direction are formed. The long hole 41g is an insertion hole for inserting a screw member 48 (see FIGS. 9, 10, and 12) for fixing the housing 41 to the end surface 4 a of the slide door 4. Here, the sliding door 4 according to the present embodiment adjusts the facing distance D with the front wall 1a in order to secure the sealing performance with the front wall 1a when the warehouse 3 is closed. Yes (see FIG. 12). As will be described in detail later, in order to change the mounting position of the casing 41 in accordance with the adjustment value d at this time, the longitudinal direction (front-rear direction) dimension EL (see FIG. 5) of each elongated hole 41g is opposite. It is considerably longer than the maximum dimension of the adjustment value d set for changing the interval D (for example, about 3-4 times the diameter of the screw member 48. Alternatively, it is twice or more the maximum dimension of the adjustment value d. It may extend.) It extends in the front-rear direction. Note that the maximum dimension of the adjustment value d can be determined in association with the diameter Fd of the seal member 16 under a predetermined condition as described above. Therefore, it is preferable that the longitudinal dimension EL of each long hole 41g is determined in association with the diameter Fd of the seal member 16 under the predetermined condition. In that case, it is possible to set the dimension in the longitudinal direction (front-rear direction) of each elongated hole 41g to a suitable length according to the specifications of the individual seal members 16, and to increase the degree of freedom in designing the locking device 20. It becomes.

  In the present embodiment, the center of the long hole 41g is slightly shifted forward from the center line that bisects the housing 41 forward and backward. Further, at the time of assembly, the relative positions of the casing 41 and the hook member 83 of the lock unit 80 are determined so that an initial mounting position of a screw member 48 described later is set on the front end side of the long hole 41g. Has been. Therefore, the long hole 41g can absorb the maximum dimension of the adjustment value d with a necessary and sufficient length.

  Of the side wall surface of the casing 41 forming the housing chamber 41f, an upper part from a line dividing the upper long hole 41g up and down, and a lower part from a line dividing the lower long hole 41g up and down Are each formed with a knurled portion 41h. 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 casing 41 portion at the periphery of the long hole 41g, and may be a partial region. 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 housing 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 casing 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 casing 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 housing 41 is pivotally supported by the shaft groove 41b. To do.

  The material and processing method of the casing 41 as described above can be selected as appropriate in consideration of strength and the like. In this embodiment, it is preferable that the housing | casing 41 is a die-cast product from a 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 receiving member 42 will be described with reference to FIGS. 4 and 7A and 7B. 7A and 7B are illustrated in a state where the partition wall 41n of the housing 41 is omitted and the accommodation chamber 41f and the spring chamber 41i are communicated 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 from the right side of the housing 41 to the insertion hole 41a of the housing 41 along the top and bottom, so that both end portions of the shaft portion 42a are pivoted to the shaft groove 41b continuous with the insertion hole 41a. Be supported.

  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.

  At the time of assembly, the hook receiver 42b is inserted from the right side of the housing 41 into the insertion hole 41a of the housing 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 housing 41.

  The receiving member 42 is assembled to the housing 41 in a state where the shaft portion 42 a is pivotally supported by the shaft groove 41 b and the bearing portion 41 p of the housing 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 housing 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 housing 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 housing 41.

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

  8A and 8B, a cam surface 42e that receives a force from the spring member 44 is formed in the sleeve portion 42d. The cam surface 42e is constituted by the outer peripheral surface of the rib-shaped portion by cutting out a part of the sleeve portion 42d and projecting another portion into a rib shape around the rotation center O of the shaft portion 42a. . 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 dividing line L that bisects the rotation center O of the shaft portion 42a when the receiving member 42 is in the locked posture. 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 urged to the lock posture and is held at the terminal end on the lock posture side in a stroke defined by the housing 41.

  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 dividing 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 urged to the retracted posture and is held at the end on the retracted posture side in the stroke defined by the housing 41.

  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 housing 41 and supports the receiving member 42 together with the housing 41 during assembly. The shaft pressing member 43 is a plate-like member that has a generally “concave” -shaped appearance that borders the outlines of the insertion hole 41 a and the mounting recess 41 c when viewed from the side of the housing 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 housing 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 housing 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 housing 41, the shaft pressing member 43 is assembled from the right side of the housing 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 housing 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, referring 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 housing 41 from the left side. is there. 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 housing chamber 41f of the housing 41. Therefore, the receiving member 42 is configured to be able to protrude outside the housing 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 housing 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 housing 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 peripheral portion of the housing 41. Then, as shown in FIG. 4, by fitting the cover 45 from the left side surface of the casing 41, the locking claws 45e and 45f are locked to the peripheral portions of the grooves 41k and 41m. It is integrated with the body 41.

  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 housing 41 from the left side surface, and is 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, as described later, it is possible to adjust the mounting position of the housing 41 by changing the position tightened by the 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 dividing 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. And after exceeding the dividing line L, the attitude | position of the receiving member 42 can be displaced to a lock attitude | position in the state urged | biased by the urging | biasing force of the spring member 44. FIG. 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.

  Next, as described above, when the slide door 4 is closed, the seal member 16 is pressed against the frame member 15. For this reason, the sealing member 16 may be plastically deformed due to deterioration over time, and the sealing performance may be lowered. Therefore, in the present embodiment, the upper pressing mechanism 5 and the lower pressing mechanism 6 of the refrigerator 1 are adjusted to change the position where the slide door 4 closes so that the sealing performance can be maintained.

  Referring to FIG. 12, the left sliding door 4 in FIG. 12 is disposed at an initially set position. In this case, the facing distance (interval in the front-rear direction) D between the sliding door 4 and the front wall 1a (strictly, the frame member 15 of the front wall 1a) is set to the dimension D1.

  Next, the slide door 4 on the right side of FIG. 12 shows a state where the adjustment value d is moved rearward from the facing distance D1 in order to cope with deterioration with time. As a result, the facing distance D is changed to a dimension D2 that is shorter than the dimension D1 by the adjustment value d.

  In the above case, it is necessary to absorb the adjustment value d and adjust the position of the receiving unit 40 to the same position as the initially set position. In this embodiment, the screw member 48 and the long hole 41g are configured to absorb the adjustment value d.

  4, 6 and 12, as described above, the long hole 41 g extends along the front-rear direction of the refrigerator 1 during assembly. For this reason, as shown in FIG. 12, when the position where the slide door 4 is closed is adjusted, the screw member 48 is once loosened, and the position where the screw member 48 stops the housing 41 is set to the position of the long hole 41g. By changing back and forth along the longitudinal direction and then tightening the screw member 48 again, the adjustment value d is absorbed, and the relative positional relationship between the receiving unit 40 and the lock unit 80 after adjusting the facing distance D is changed. It becomes possible to make adjustments in the same positional relationship as initially set. Thus, in the present embodiment, the position of the receiving member 42 is adapted to the hook member 83 according to the facing distance D adjusted when the facing distance D is adjusted by the pair of long holes 41 g and the screw member 48. It is possible to adjust the mounting position of the receiving unit 40.

  As described above, in the present embodiment, when the sliding door 4 closes the warehouse 3, the sliding door 4 that closes the warehouse 3 by engaging the receiving member 42 and the hook member 83. The security of the refrigerator 1 using the sliding door 4 can be ensured. By the receiving unit 40 and the lock unit 80, the operability at the time of locking is improved and the appearance is improved as compared with the case where the chain is locked using a chain or a padlock. Further, the receiving unit 40 has a screw member 48 and a long hole 41g according to the adjusted facing distance D when the facing distance D between the sliding door 4 and the front wall 1a is adjusted to ensure sealing performance. The position of the receiving member 42 can be adapted to the hook member 83. In addition, the operation of adjusting the position of the receiving unit 40 with respect to the hook member 83 corresponding to the facing distance D between the slide door 4 and the front wall 1a is exclusively the relative position between the long hole 41g and the screw member 48. It can be realized by changing work. Therefore, the position where the receiving member 42 and the hook member 83 are engaged can be adjusted by a simple and easy-to-implement mechanism. Therefore, it is possible to provide an inexpensive product.

  The longitudinal dimension EL of each long hole 41g is determined when the specification or standard of the refrigerator 1 and various conditions necessary for ensuring the sealing performance when the slide door 4 is closed are determined. When the material of the seal member 16 and the diameter Fd of the seal member 16 in the free state are determined, it is preferable that the seal member 16 is determined in association with the diameter Fd of the seal member 16. In that case, it is possible to set the dimension in the longitudinal direction (front-rear direction) of each elongated hole 41g to a suitable length according to the specifications of the individual seal members 16, and to increase the degree of freedom in designing the locking device 20. It becomes.

  Further, in the locking device 20 according to the present embodiment, the housing 41 has a knurled portion 41h facing the head of the screw member 48 that passes through the long hole 41g and having fine undulations in the facing direction. It is formed along the long hole 41g. Therefore, in this embodiment, when the screw member 48 is fastened, the seat surface 48a of the screw member 48 or the washer (not shown) interposed between the seat surface 48a and the knurled portion 41h causes fine undulations. The knurl part 41h which has is crushed. Therefore, the frictional force between the screw member 48 and the housing 41 is increased. As a result, a large resistance force acts on the screw member 48, so that the screw member 48 can be prevented from slipping. Therefore, the force with which the screw member 48 tightens the housing 41 can be maintained high for a long period of time, and a firm fixing structure can be provided. On the other hand, when the screw member 48 is loosened, the tightening force of the screw member 48 is easily released. Therefore, the operation | work which moves the housing | casing 41 and adjusts the position of the housing | casing 41 can be performed easily. On the other hand, when the screw member 48 is tightened again after the adjustment of the housing 41, the seating surface 48a of the screw member 48 or the seating surface of the washer (not shown) again crushes the knurled portion, thereby obtaining a high tightening force. be able to. In particular, in the present embodiment, coupled with the fact that the knurled portion 41h is an undulation that forms a linear ridge line along the vertical direction, the seat surface 48a of the screw member 48, or between the seat surface 48a and the knurled portion 41h. A seat surface of a not-illustrated washer interposed between the housing 41 and the knurl portion 41h at the time of mounting, firmly restricts the movement of the housing 41 in the front-rear direction.

  In the locking device 20 according to the present embodiment, the receiving member 42 includes a shaft portion 42a that rotates around a vertical line. Due to the rotation of the shaft portion 42 a, the receiving member 42 stands up with respect to the end surface 4 a of the slide door 4, and falls down with respect to the lock posture protruding from the end surface 4 a and the end surface 4 a side of the slide door 4. Thus, it can be displaced between the retracted posture retracted to the front wall 1a side. For this reason, in this embodiment, the receiving member 42 can be raised with respect to the end surface 4a of the sliding door 4 only when locking is required. On the other hand, when the slide door 4 is opening the storage opening 3, the receiving member 42 can be laid down with respect to the end face 4 a side of the slide door 4 to take a 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.

  In the locking device 20 according to the present embodiment, the receiving unit 40 includes a spring member 44 that is attached to the housing 41 and biases the receiving member 42 in each of the locked posture and the retracted posture, and the shaft portion 42a. Includes a cam surface 42e that contacts the spring member 44, and the cam surface 42e is configured to receive a biasing force of the spring member 44 that biases the receiving member 42 to the locked posture when the receiving member 42 is in the locked posture. And the second pressure receiving portion 42g configured to receive the biasing force of the spring member 44 that biases the receiving member 42 to the retracted posture when the receiving member 42 is in the retracted posture. including. For this reason, in this embodiment, when the receiving member 42 is in the locked posture, the biasing 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 biased to the locked posture. . On the other hand, when the receiving member 42 is in the retracted position, the biasing 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 biased to the retracted position. 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 can ensure the reliability of the operation.

  Further, in the locking device 20 according to the present embodiment, the hook member 83 includes an arm portion 83d that rotates around a vertical line, and a claw portion 83e that protrudes in the rotation direction from the distal end portion of the arm portion 83d. The member 42 is displaced from the disengagement posture to the engagement posture by rotating in the direction approaching the front wall 1a. 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. On the other hand, for example, as disclosed in Patent Document 2, in the case of a rotating hook that rotates around an axis perpendicular to the wall surface, a left-handed one and a right-handed one are manufactured separately. Therefore, parts management and distribution are lacking.

  Further, in the locking device 20 according to the present embodiment, the lock unit 80 includes a front wall by a bolt 86 as a mounting member that can be operated by detaching the lock unit 80 from the front wall 1a from the inside of the storage room defined by the front wall 1a. It is fixed to the outside of 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 83 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 in which the hook member 83 is detached 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.

  In addition, if the latch which reciprocates along the front wall 1a of the refrigerator 1 is used for the lock unit, the direction when the lock unit is detached from the front wall 1a intersects the movement direction of the yoke. It will be. Therefore, in the case of a lock unit using a spring, even if an operator or the like operates the bolt 86 from the refrigerator 1 and tries to release the lock unit 80, the movement of the lock unit 80 is hindered by the spring. As a result, it may be difficult to reliably separate the pin and the receiving member 42.

  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.

  In the embodiment, the casing is set such that the longitudinal dimension of the long hole is set longer than the maximum dimension of the adjustment value, and the initial mounting position of the screw member can be finely adjusted within this long set range. However, there is provided recognition means for allowing the operator to recognize at least a boundary between the adjustment range corresponding to the maximum dimension of the adjustment value and the initial attachment range in which the initial attachment position can be set. Also good.

  For example, in a preferred embodiment, the maximum dimension of the adjustment value with respect to the screw member when the side close to the wall surface is one end and the other side is the other end of the longitudinal ends of the elongated hole. The recognizing means for allowing the operator to recognize the initial attachment range may be provided in the housing so that the first hole is secured from the one end to the other end.

  In such an aspect, it becomes easier for the operator to locate the initial mounting position of the long hole based on the recognition means, and workability is improved, while the initial mounting position is set in a state where a predetermined adjustment range is secured. Therefore, when dealing with the position adjustment when the sliding door is adjusted in the direction approaching the wall surface, the one end side of the long hole can be effectively utilized. Further, by recognizing the boundary of the adjustment range, a fine adjustment range, which is a range in which the initial mounting position of the screw member can be finely adjusted, is also secured, so that the versatility of the housing is improved and the usability is improved.

  The recognition means may clearly indicate the adjustment range corresponding to the maximum dimension of the adjustment value to the operator, but it is preferable to allow the operator to recognize the initial attachment range. In that case, the operator can recognize the initial mounting range, thereby ensuring the maximum dimension of the adjustment value and increasing the degree of freedom for the worker to position the initial mounting position. become.

  The recognition means may be a visible mark, or may be a three-dimensional structure recognizable by tactile sense when positioning the elongated hole in the screw member. It may be configured in combination with what is done.

  Examples of the mark include characters, figures, symbols, and three-dimensional structures that are recognized by the operator visually. The mark may be a combination of a plurality of characters and symbols. In that case, it is possible to provide more complicated instruction information to the worker and perform the desired alignment. When a mark is used as the recognizing means, the mark is preferably provided in a range overlapping the head of the screw member. In this case, it is possible to visually recognize the overlap of the screw member with the head.

  Examples of the three-dimensional structure include those using unevenness such as protrusions formed in the range around the elongated hole and overlapping the head of the screw member. The three-dimensional structure not only functions as a landmark, but can also be one that can be recognized by an operator by touch. For example, the three-dimensional structure may be a knurled shape. In that case, the recognition means can be provided with a positioning function for physically positioning the long hole in the screw member by touch. In particular, the knurled portion may be provided with a step so that the height gradually decreases from the one end to the other end. In that case, not only the initial mounting position can be set on the other end side of the long hole by the step of the knurled part, but also the other end side of the long hole can be preferentially positioned first. The dimension along the longitudinal direction can be effectively used as an adjustment range as a whole, and the adjustment of the facing distance can be accommodated.

  Further, the recognition means may be a plurality of marks or protrusions arranged in the vicinity of the one end portion and along the longitudinal direction. In that case, the operator can recognize the boundary of the initial mounting position based on the one of the plurality of marks or protrusions that is closest to the one end of the long hole. When adjusting the position of the receiving unit, precise fine adjustment can be performed based on the mark or the protrusion.

  In a preferred aspect, the initial attachment range is set at least on the other end side from a central portion of the elongated hole. In this aspect, in securing the adjustment range, the initial attachment range is set at least on the other end side from the central portion of the long hole, so that the initial attachment position can be set in a range where the adjustment range is relatively large. Moreover, in the longitudinal direction of the long hole, the initial attachment position can be set in a wide range, and as a result, the versatility of the locking device can be enhanced.

  In a preferred embodiment, the initial attachment range may be only the middle part of the long hole. In that case, even when the sliding door is adjusted in a direction away from the wall surface, such as replacement of an elastic seal, the other end side of the long hole can be used as an adjustment allowance.

  Moreover, it is preferable that the initial attachment range is closer to the other end side than the central portion of the long hole. In that case, as a result of setting the distance from the initial mounting position to one end of the long hole to be long, the dimension in the longitudinal direction of the long hole can be used more effectively. In other words, even when the longitudinal dimension of the long hole is set to be relatively short, the adjustment range can be set large, and it is possible to cope with a change in the facing interval over a long period of time.

  Hereinafter, a specific description will be given with reference to FIG.

  As described above, in the above-described embodiment, the dimension EL in the longitudinal direction (front-rear direction) of the long hole 41g is substantially larger than the maximum dimension of the adjustment value d set for changing the facing distance D (see FIG. 12). This is a range corresponding to the maximum dimension of the adjustment value d, coupled with the fact that the center of the long hole 41g is slightly shifted forward from the center line that bisects the housing 41 forward and backward. The adjustment range AP is secured from the one end 410 on the rear end side of the long hole 41g to the other end 411 side on the front side. In other words, an initial mounting range IP that is a range in which the initial mounting position of the screw member 48 can be set is secured on the other end 411 side of the long hole 41g. In the modification of FIG. 13, in order to clarify the boundary between the adjustment range AP and the initial attachment range IP, a plurality of marks 41r as recognition means are provided in the vicinity of the one end 410 side of each long hole 41g. Yes.

  The plurality of marks 41r provided in the upper elongated hole 41g are equally arranged in the front and rear in the vicinity of the lower side of the elongated hole 41g. The plurality of marks 41r are provided close to the one end 411 side of the long hole 41g. Similarly, in the vicinity of the upper side of the lower long hole 41g, a plurality of marks 41r are provided close to the one end 411 side of the long hole 41g.

  The plurality of marks 41r function as markers for clearly indicating the adjustment range AP corresponding to the maximum dimension of the adjustment value d to the operator. In other words, the operator recognizes the range without the mark 41r as the initial mounting range IP with the mark 41r at the foremost end as a mark, and the initial mounting position when the casing 41 is first screwed to the long holes 41g. Can be positioned within the initial mounting range IP.

  Each mark 41r has a circular shape having a diameter that can be visually observed. The interval between the adjacent marks 41r is, for example, 1.5 mm. However, the interval is not limited to the example of FIG. The mark 41r is formed by stamping irregularities on the side wall of the housing 41 during press working or by applying a paint. In order to easily recognize the initial mounting range IP, a symbol such as an arrow or a character such as “initial mounting position” may be written at an appropriate position of the initial mounting range IP.

  In the modification of FIG. 13, the initial attachment range IP includes the longitudinal center portion of the long hole 41g. Therefore, the operator can adjust the initial attachment position in the range from the longitudinal center portion of the long hole 41g to the other end 411 side. For this reason, in the modified example of FIG. 13, the foremost end mark 41r can not only recognize the other end 411 side as the initial attachment range IP from the foremost end mark 41r, but also within the initial attachment range IP. It also has a function of recognizing a fine adjustment range that is a range in which the initial attachment position of the screw member 48 is finely adjusted. As a result, the substantially entire length in the longitudinal direction of the long hole 41g can be effectively used, and versatility can be improved.

  A plurality of marks 41r are displayed at a predetermined interval on the rear end side of the long hole 41g. Therefore, when the operator adjusts the position of the receiving unit 40, the worker can perform fine fine adjustment using the mark 41r as a mark.

  Furthermore, since the mark 41r is stamped by stamping or paint, the mark 41r aligns the screw member 48 even if the screw member 48 is positioned on the mark 41r. There is no hindrance. When a mark such as the mark 41r is used as the recognition means, it is preferable that the mark 41r as the mark is provided in a range overlapping the head of the screw member 48 as in the embodiment of FIG. In this case, the overlap of the screw member 48 with the head can be visually recognized quickly, which contributes to improvement in workability.

  Note that the number of marks 41r as the recognition means may be only two indicating the start position and the end position of the initial attachment position. Further, the mark 41r as the recognition means is not limited to a specific position, and another symbol or design such as an arrow indicating the entire initial attachment range IP may be used. In that case, only one mark may be written. Further, the mark 41r may have a three-dimensional structure such as a protrusion visually recognized by the uneven shape. In particular, in the case where the mark 41r is configured by protrusions as projections and depressions provided in a range overlapping with the screw member 48, the operator can detect the position of the mark 41r by the touch when the mark 41r and the screw member 48 come into contact with each other. Can be recognized and workability can be improved.

  Further, the recognition means is not limited to a mark such as the mark 41r.

  Next, a configuration for changing the height of the knurled portion 41h will be described as another example of the recognition unit with reference to FIG.

  As shown in FIG. 14, in the knurl portion 41h, the portions 41s, 41t, and 41u in the range where the long hole 41g is formed are changed in height in three stages over the longitudinal direction of the long hole 41g. Among these, the most advanced portion 41s is the lowest, and then the height is higher in the order of the central portion 41t and the rear end portion 41u. In addition, although the depth and level | step difference of each site | part 41s, 41t, 41u are exaggerated and described for easy understanding in FIG. 14, the dimension of the knurled part 41h is, for example, the site | part 41s of the front-end | tip (deepest part). The depth h1 is about 0.4 mm, the depth h2 of the central part 41t is about 0.3 mm, the depth h3 of the rear end (shallowest part) part 41u is about 0.2 mm, (The difference between the depth h3 and the depth h2 or the difference between the depth h2 and the depth h1) is about 0.1 mm. Of course, these are only examples, and for example, the depth of the shallowest part is set to a range of 0.2 mm to 0.5 mm and the step is set to a range of 0.1 mm to 0.5 mm. May be set.

  As shown in FIG. 14, when a step is formed in the longitudinal direction of the long hole 41 g, each part 41 s, 41 t, 41 u is first attached to the slide door 4 by the screw member 48. At this time, it functions as a recognition means for allowing the operator to recognize the initial mounting positions of the screw member 48 and the long hole 41g. In particular, in the case of FIG. 14, since the recognition means is constituted by a part (parts 41 s, 41 t, 41 u) of the knurled portion 41 h having different heights, not only the visual recognition but also the screw member 48 is physically attached. It also has a positioning function for positioning. Furthermore, in the illustrated example, the portion 41s facing the other end portion 411 is set to be the lowest, and the portions 41s, 41t, 41u of the knurled portion 41h are set so as to increase in height toward the rear end. Since it is set, at the time of the first work, the tip part 41s can be used as a part for preferentially positioning the screw member 48.

  In addition, when changing the depth (mountain height) of the knurl part 41h partially, you may set the height of each site | part 41s, 41t, and 41u to the reverse of FIG.

  Furthermore, the recognition means, such as combining the mark 41r in FIG. 13 and the knurled portion 41h in FIG. 14, may combine a mark recognized by vision and a three-dimensional structure recognized by touch.

  Moreover, although not specifically shown, the initial attachment range may be specified at the central portion of the long hole 41g. In that case, it is possible to secure an adjustment margin for adjusting the position by shifting the housing 41 in the reverse direction while securing the adjustment range AP for shifting the housing 41 forward. Of course, even in that case, it is preferable to set the initial mounting range IP or the initial mounting position so that the initial mounting range is set near the other end 411 of the long hole 41g. In that case, since the adjustment range AP secured from the one end portion 410 of the long hole 41g to the front end side is set longer, the longitudinal dimension of the long hole 41g can be effectively utilized.

  In the embodiment and the modification described above, the structure in which the receiving unit 40 is attached to the slide door 4 is adopted, and the posture of the receiving member 42 accommodated in the receiving unit 40 is configured to be displaceable. Therefore, there is no need to provide a recess (embedded portion) for causing the receiving member 42 to appear and disappear in the slide door 4. Therefore, there exists an advantage that construction can be performed easily and retrofitting becomes easy also with respect to the existing refrigerator 1. FIG.

1 Refrigerator 1a Front wall (example of wall surface)
15 Frame material (wall surface components)
3 Door 4 Slide door 4a End surface 20 in the closing direction Locking device 40 Receiving unit 41 Housing 41g Long hole 41h Knurled portion 42 Receiving member 42a Shaft portion 42e Cam surface 42f First pressure receiving portion 42g Second pressure receiving portion 44 Spring member 48 Screw member 48a Seat surface 80 Lock unit 83 Hook member 86 Bolt (an example of a mounting member)
F1 Energizing force to the locked position F2 Energizing force to the retracted position

Claims (6)

By reciprocating along the wall surface in which the warehouse port is formed, the seal is opened and closed, and the gap between the wall surface when closing the warehouse port by adjusting the facing distance from the wall surface A locking device for a sliding door for a refrigerator, which is provided in a refrigerator having a sliding door capable of securing the property and locks the sliding door,
A receiving unit including a receiving member projecting along the closing direction of the sliding door, a housing supporting the receiving member, and a screw member fixing the housing to an end surface in the closing direction of the sliding door;
A hook unit that includes a hook member that is displaced between an engagement posture that engages with the receiving member and a separation posture that separates from the receiving member, and a lock unit that is fixed to the wall surface,
The casing is formed with a long hole extending along a direction in which the wall surface and the slide door face each other, and through which the screw member is inserted.
The receiving unit adjusts the position of the receiving member by changing the relative position of the elongated hole with respect to the screw member according to the adjusted facing interval when the facing interval is adjusted. It is comprised so that it may adapt to a member. The locking device of the sliding door for refrigerators characterized by the above-mentioned. In the locking device of the sliding door for refrigerators of Claim 1,
The housing is opposed to a seat surface of a screw member inserted through the elongated hole or a seat surface of a washer interposed between the seat surface and the housing, and has minute undulations in the facing direction. The knurled part which has is formed along the said long hole. The locking device of the sliding door for refrigerators characterized by the above-mentioned. In the locking device of the sliding door for refrigerators of Claim 1 or 2,
The receiving member includes a shaft portion that rotates around a vertical line, and rises with respect to the end surface of the slide door, and falls down with respect to the lock posture protruding from the end surface and the end surface side of the slide door. Accordingly, the refrigerator sliding door locking device is capable of rotating between a retracted posture retracted to the wall surface side. In the locking device of the sliding door for refrigerators of Claim 3,
The receiving unit includes 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 And 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. apparatus. In the locking device of the sliding door for refrigerators in any one of Claim 1 to 4,
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. By doing so, the locking device for the sliding door for a refrigerator is characterized in that it is displaced from the disengagement posture to the engagement posture. In the locking device of the sliding door for refrigerators of Claim 5,
The lock unit is fixed to the outside of the wall surface by an attachment member that can be operated to remove the lock unit from the wall surface from the inside of the wall surface.

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