JP2008057313A - Refrigeration container sliding door opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a sliding door opening / closing device (6) of a refrigeration container from protruding to the outside of each device installed on a door (8) and a main body (4), and opening / closing without damage to parts due to an external influence In addition, the flexible opening and closing operation and the excellent sealing performance when the door is closed are realized.
A slide rail (14) and a slide (16) are arranged in a horizontal guide groove (18) provided on the front surface of a container body (4). The base of the swing plate (10) is coupled to the slide (16) so as to be rotatable about a vertical axis. A vertical rotation shaft rod (21) that is inserted through the support tube (20) in the door (8) is connected to the tip of the swing plate (10). When the slide (16) comes into contact with the stopper on one end of the slide rail (14), the swing plate (10) performs a swinging action to close the door (8), and the exposed part (20a) of the support tube (20) moves up and down. It is inserted into the insertion groove (30) of the part frame (12a, 12b).
[Selection] Figure 1

Description

  The present invention relates to a sliding door opening and closing device for a refrigerated container. More specifically, the present invention enables a stable and flexible opening and closing with a simple structure while keeping the appearance of the door beautiful, and provides a complete seal when the door is closed. The present invention relates to a sliding door opening and closing device that can be made.

  A sliding door opening and closing device for a refrigerated container is disclosed in Patent Documents 1 to 3 filed and registered by the present applicant.

The sliding door opening / closing devices for the refrigerated containers disclosed in Patent Documents 1 to 3 described above have advantages, but a guide rail protruding outward from the container body is provided, and a support bar is provided on the front of the door. Since the structure is exposed and coupled to the outside, the exposed and protruding parts are easily damaged by external impacts and the like during vehicle operation, and the appearance is not good.
Korean Patent Registration No. 0381757 Korea Patent Registration No. 0577085 Korea Utility Model Registration No. 0389929

  The purpose of the present invention is to prevent sliding of doors and devices installed in the main body from protruding to the outside, keeping the appearance beautiful and simplifying the structure, but opening and closing without damage to parts due to external influences An object of the present invention is to provide a sliding door opening and closing device for a refrigeration container that enables operation.

  Another object of the present invention is to provide a sliding door opening / closing device for a refrigerated container that can always be opened and closed flexibly and has excellent sealing performance when the door is closed.

  Still another object of the present invention is to increase the volume in the container body in accordance with the reference width of a refrigerated container carrying vehicle, thereby enabling the loading and transport of as many articles as much. An object of the present invention is to provide a sliding door opening and closing device.

  In order to achieve the above object, the present invention provides a sliding door opening / closing device for a refrigerated container, wherein a horizontal guide groove is provided in front of the container body near the door, and the slide is on the slide rail in the horizontal guide groove. The swing plate is rotatably coupled via a shaft portion, and a vertical rotation shaft rod fitted to a support tube mounted in the door is axially coupled to the front end portion of the swing plate, When the door is closed, the slide abuts against one end stopper of the slide rail and the swing plate swings. The exposed portion of the support tube is inserted into an insertion groove formed in the upper and lower frames of the door frame. It is characterized by that.

  According to one preferred embodiment, a lock shaft bar having a latch cam is fitted into the support lever support tube inside the door, and the lock shaft bar is rotated by an operation lever exposed on the front surface of the door, and the upper and lower parts The latch cam is latched by a latch holder installed on the frame.

  The sliding door opening and closing device of the refrigerated container according to the present invention is safe against external impact, and since each component is not exposed from the container body and the door, there is no risk of moisture and various foreign substances permeating, and flexible. It has the advantage that it can be operated at all times and the appearance can be kept beautiful.

  In addition, since the structure has no protrusion outside the container, the container width is increased by the width of the existing protrusion, and the inner volume of the container is increased accordingly, so that the loading efficiency is improved.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are given the same reference numerals as much as possible, and descriptions of known functions and configurations that obscure the gist of the present invention are omitted.

  In the embodiment of the present invention, only a part of the operating lever is exposed on the front surface of the door, and most components and parts are built in and inserted in the door or in the groove of the main body. The exposure or protrusion is minimized. In particular, when the door is closed, the door swing plate also has a structural feature that it does not protrude outside the main body.

  FIG. 1 is a perspective view showing a sliding door opening / closing device for a refrigerated container according to the present invention, FIG. 2 is a front view of the present invention, and FIGS. 3a and 3b are main parts showing the opening / closing state of the door of the present invention. FIG. 4 is a partial cross-sectional view related to the operating lever of the present invention, and FIGS. 5a and 5b are main cross-sectional views for explaining the open / closed state of the door of the present invention. (Perspective view from the vertical direction).

  As shown in FIG. 1, a slide door opening / closing device 6 for sliding opening / closing of the door 8 is installed on the front surface of the container main body 4 of the refrigerated container 2. The sliding door opening / closing device 6 includes a portion that supports and couples the door 8, a swing plate 10 portion that swings the door 8, and a portion that slides the door 8.

  In the configuration of the sliding door opening and closing device 6 according to the embodiment of the present invention, the components and mechanical parts of the portion that supports and couples the door 8 are embedded in the door 8, and the configuration of the portion that slides the door 8 is configured. Elements and machine parts are embedded in the body 4. The built-in configuration and insertion configuration of such components and machine parts protect each component from the external environment such as exposure to snow and rain and the penetration of foreign substances, thus improving the performance of the component and error. Minimize operation.

  More specifically, the upper and lower portions of the door frame 12 are provided with components that enable a sliding operation, that is, a slide rail 14 and a slide 16, and the slide rail 14 and the slide 16 are provided in the container body 4. Is provided in a horizontal guide groove portion 18 formed on the front surface of the. Therefore, the slide rail 14 and the slide 16 are configured not to protrude from the front surface of the container body 4 as shown in FIGS. 3a and 3b.

  On the other hand, the horizontal guide groove portions 18 respectively installed on the upper and lower portions of the door frame 12 are extended and formed longer than the slide rail 14 as shown in FIGS. In addition, a slide 16 that extends horizontally is engaged with the slide rail 14 so as to be easily slidable, and a portion of each end of the slide 16 is connected to a base of each swing plate 10 via a connecting piece 17. The parts are coupled for rotation about a vertical axis. In the illustrated example, each connecting piece 17 includes a central portion serving as a vertical bearing portion, and both end portions on the left and right sides thereof and fastened to the slide 16. A swing shaft rod coupled to the root portion of the swing plate 10 is rotatably inserted into a bearing hole penetrating the center portion in the vertical direction. The swing plate 10 has a U-shaped cross section at the root and is connected to the upper and lower ends of the swing shaft rod. That is, the swing plate 10 includes a strip-shaped basic portion extending horizontally, a vertical extending portion extending from one side edge of the base portion to the outside in the vertical direction (upward in the upper portion of the door), and further The swing shaft rod is supported and connected between the base portion of the basic portion and the horizontal extension portion. When the door 8 is closed, as shown in FIGS. 5 b and 3 b, the U-shaped section that forms the root of the swing plate 10 covers the slide 16 and the slide rail 14. That is, the basic part and the horizontal extension part sandwich the part of the slide 16 and the slide rail 14 with the part that comes inside them. In the example shown in FIG. 3a, the slide rail 14 is attached to the wall surface on the back side of the horizontal guide groove portion 18, and extends in a symmetrical manner from the basic portion having a substantially square cross section and the upper and lower ends of this back side. The cross section consists of a lip-shaped part. Then, the slide 16 having a substantially C-shaped or U-shaped cross section is fitted so as to abut the front surface of the basic portion of the slide rail 14 at the central portion and be captured by the lip portion of the slide rail 14 at the upper and lower portions. It is. The slide 16 is supported from above and below by a lip portion of the slide rail 14 via, for example, a bearing ball, and can be easily slid.

  As shown in FIG. 3 a, the front end portion of each swing plate 10 is fastened and fixed to the upper and lower ends of the vertical rotation shaft rod 21, and the vertical rotation shaft rod 21 is supported in the support tube 20 embedded in the door 8. It is fitted so that it can rotate inside.

  Between the two support tubes 20 installed inside the door 8, one support lever support tube 22 is installed inside the door 8 so as to be parallel to the two support tubes 20. The two support pipes 20 and the operation lever support pipe 22 are connected and fixed to each other using a plurality of fixing bars 23 (horizontal ladders) arranged in the horizontal direction, and are firmly fixedly fixed to the door 8. The For example, the door 8 is a thick plate-shaped housing made of a thin steel plate or a plastic plate, a foamed material such as hard urethane filled therein, and an outer surface plate of a larger size attached to the outside of the housing. The support tubes 20 and 22 and the fixing bar (horizontal crosspiece) 23 are embedded in the foam and are connected to the outer plate portion and the outer plate of the casing as appropriate. According to the examples shown in FIGS. 1, 3a, 3b and 4, the fixing bar (the ladder crosspiece) 23 in the casing also serves as a metal fitting for fastening with the outer plate portion, etc. As a result of the fastening, a ladder-like “supporting and coupling structure” composed of the support tubes 20 and 22 and the fixing bar 23 is connected to the housing of the door 8. In particular, as shown in FIG. 1, the fixing bar is fastened on both the left and right sides of the point where the supporting pipes 20 and 22 and the fixing bar 23 intersect with each other, whereby the supporting pipe 20 to the outer plate portion of the housing is obtained. , 22 are fixed. Further, as shown in FIGS. 3a and 3b, each of the support tubes 20, 22 and the fixing bar 23 is disposed in contact with or close to the outer plate portion of the door casing. Separated from the plate portion.

  As shown in FIG. 4, a lock shaft rod 24 having a latch cam 26 is rotatably fitted to the operating lever support tube 22 at both ends (upper and lower) ends. It is rotated by an operating lever 28 formed to be exposed on the front surface of the actuator. The actuating lever 28 is configured to be housed in a concave portion on the front surface of the door 8 and to be flush with other portions of the front surface of the door 8 when pushed in to lock the door. In the example shown in FIG. 4 and the like, the actuating lever 28 has a rectangular thick plate shape extending in the horizontal direction, and the root portion is coupled to the lock shaft rod 24 and is pivotally supported. The distal end portion of the operating lever 28 forms a U-shaped handle portion by having a substantially rectangular punching portion for gripping.

  With the internal configuration of the door 8 as described above, in the present invention, components and machine parts for supporting and coupling the door 8 are installed inside the door 8.

  On the other hand, two insertion grooves 30 are formed in the upper and lower sides of the rectangular door frame 12, that is, in the upper and lower frames 12a and 12b, respectively, penetrating in the vertical direction. When the closing swing is performed by the swing plate 10 when the door 8 is closed, these insertion grooves 30 are formed so that the exposed portions (portions protruding from the upper and lower end surfaces of the door 8) 20a of the vertical support pipe 20 that supports the door 8 are exactly the same. It is formed in the position and groove width to be inserted and fitted (FIGS. 1, 3b and 5b). As shown in FIGS. 3b and 5b, when the front surface (front surface) of the door frame 12 and the front surface of the container body 4 are substantially flush with each other and the door 8 is closed, the front surface of the door 8 (outside The face plate) and the outer surface of the vertical wall portion of the swing plate 10 are also substantially in the same plane. Further, the exposed portion 20 a of the support tube 20 is completely accommodated in the insertion groove 30 of the door frame 12. 5a and 5b, the fastening between the swing plate 10 and the upper and lower ends of the support tube 20 is performed at the front end of the swing plate 10 at the inner end when the door is closed (the right end when the door is opened). Thus, the swing when the door is closed and the insertion of the support tube exposed portion 20a into the insertion groove 30 are performed more smoothly. As shown in FIGS. 1 and 2, the inner edge of the door frame 12 is positioned slightly outward in four directions with respect to the opening provided in the heat insulating wall of the container body 4. A step portion is formed along the inner edge of 12. As shown in FIGS. 5 a and 3 a, the bottom of the insertion groove 30 (the deepest part toward the back) is the front surface of the heat insulating wall of the container body 4. That is, the bottom of the insertion groove 30 is located on the plane formed by the stepped portion. As shown in FIGS. 3b and 5b, when the door 8 is closed, the inner part of the door 8, that is, the part deeper than the support tube 20, is fitted into the opening of the container body 4 to realize sealing. Furthermore, as shown in FIG. 5 b, the outer plate of the door 8 can be further sealed by contacting the front surface of the door frame 12. At this time, at the position of the insertion groove 30, sealing by contact between the outer surface plate of the door 8 and the front surface of the door frame 12 is not realized, but the exposed portion 20 a of the support tube 20 is fitted, so that when the door is closed, Large gaps do not occur. An appropriate packing member may be disposed in a gap such as between the door frame 12 and the door 8.

  Further, the latch holder 32 is installed at the bottom and top of the upper and lower frames 12a and 12b, so that the latch cam 26 of the operating lever 28 is latched by the latch holder 32 when the door is closed. 1 and 2 and 3a, the latch holder 32 is located at a step portion along the inner edge of the door frame 12, and when the door 8 is closed, a gap between the door 8 and the door frame 12 is used. Located inside. Therefore, the closing of the door 8 is not hindered, and the sealing when the door 8 is closed is not adversely affected. In the illustrated example, the latch cam 26 has a gently curved claw shape with a portion protruding outward, and the latch holder 32 is formed from a metal fitting attached to the inner surface of the door frame 12. Become. The metal fitting forming the latch holder 32 includes a base portion fastened to the door frame 12 and a curved wall portion extending vertically, and this curved wall portion is substantially U-shaped that opens to the outside (front side) of the door. The left end portion of the shape is a semicircular bowl shape and engages with the tip end portion of the latch cam 26. Therefore, the operating lever 28 is pushed in and the latch cam 26 is inserted from the right side portion of the latch holder 32. When the operating lever 28 is completely pushed in, the latch cam 26 faces leftward and is stored in the latch cam 26. At this time, the leading end of the latch cam 26 is pushed into the semicircular wall portion at the left end of the latch holder 32, and the base bearing portion of the latch cam 26 abuts against the right end wall portion of the latch holder 32.

  Hereinafter, the operation principle of the sliding door opening / closing device 6 of the refrigerated container 2 having the above structure will be described in detail.

  In order to close the door 8 opened in the state shown in FIGS. 3a and 5a, when the door 8 or the operating lever 28 is pushed in the door closing direction (right side in FIG. 1), the slide 16 connected to the door 8 is moved. The door 8 is slid while moving along the slide rail 14, and the slide 16 that has been slid comes into contact with one end stopper of the slide rail 14, so that the swing plate 10 performs a closed swing by the impact force. . As a result, the exposed portion 20a of the support tube 20 that supports the door 8 is inserted into the insertion groove 30 formed in the upper and lower frames 12a and 12b. At the same time, the latch cam 26 is also inserted into the recess of the latch holder 32. Inserted.

  At this time, the door 8 is completely closed, and the front surface of the door 8 and the front surface of the door frame 12 are held in the same plane. Further, when the door is completely closed, the swing plate 10 of the door 8 is also folded so as to surround the slide 16 and the slide rail 14 in the horizontal guide groove portion 18, so that the swing plate 10 is also placed outside the main body. It will not protrude.

  When the user pushes in the operating lever 28 in the state as described above, the latch cam 26 is locked and fixed around the vertical axis in the locking recess of the latch holder 32, so that the door 8 is locked. Become.

  3b and 5b show the locked state with the door 8 closed.

  On the other hand, when the user opens the closed and locked door 8, the user may pull the operating lever 28 and then push it in the door opening direction (left side in FIG. 1).

  That is, when the actuating lever 28 is pulled, the latch cam 26 locked and fixed in the locking recess of the latch holder 32 rotates so as to release the lock, and at the same time, the support tube 20 connected to the swing plate 10 is exposed. The portion 20a comes out of the insertion groove 30 of the upper and lower frame 12a, 12b. When the door 8 is pushed in the door opening direction in this state, the slide 16 is slid along the slide rail 14 by the force, so that the door 8 is opened.

  6 and 7 show another embodiment of the present invention. FIG. 6 is a front view, and FIG.

  Another embodiment of the present invention shown in FIGS. 6 and 7 is implemented so as to realize a latching action in FIGS. 1 to 5 while omitting the support lever support tube 22.

  In another embodiment of the present invention, as shown in FIGS. 6 and 7, a latch cam 26 </ b> A is attached to the vertical rotating shaft 21 that is rotatably fitted to the support tube 20, and the upper and lower portions of the door frame 12 are arranged. Two latch holders 32A are installed on the left and right of the frames 12a and 12b. Here, the upper and lower ends of the vertical rotation shaft 21 are connected to the tip of the swing plate 10 via a shaft and a bearing hole so that they can freely rotate with each other (FIG. 7). The left and right actuation levers 28 are arranged symmetrically on the front surface of the door 8 and rotate the respective vertical rotation shafts 21 in opposite directions based on the pulling / pushing operation of the user. As shown in FIG. 6, the left and right latch holders 32 </ b> A are provided symmetrically with respect to the center axis of the door frame 12. That is, the left latch holder 32A and the latch cam 26A have the same configuration as that shown in FIGS. 1, 5a and 5b, and the right latch holder 32A and the latch cam 26A are shown in FIGS. 1, 5a and 5b. It takes the structure which reversed right and left from the thing. If locking is performed by such a left and right locking mechanism, more reliable locking can be performed as compared with the case of the embodiment of FIGS.

  According to the above configuration, when the swing plate 10 performs a closing swing during the closing operation of the door 8, the vertical rotating shaft bar 21 (up and down of the vertical rotating shaft rod 21 that is rotatably fitted to the left and right support tubes 20 that support the door 8 is used. The exposed portion) is inserted into the insertion groove 30 of the upper and lower frames 12a and 12b, and at the same time, each of the latch holders 32A positioned on the bottom of the upper frame 12a and the upper portions of the lower frames 12a and 12b, respectively. The latch cam 26A is latched.

  In general, when a refrigerated container is manufactured to be loaded on a vehicle, the volume ratio in the refrigerated container body is determined in consideration of parts protruding to the outside. In the refrigerated container 2 according to the embodiment, since the parts and components of the sliding door opening / closing device 6 are built in the door or inserted into the main body, the volume ratio is ensured accordingly.

It is a perspective view which shows the sliding door opening / closing apparatus of the refrigeration container based on the Example of this invention. FIG. 2 is a front view of FIG. 1. It is principal part incision side sectional drawing (1) which shows the opening-and-closing state of the door of FIG. It is principal part incision side sectional drawing (2) which shows the opening-and-closing state of the door of FIG. FIG. 2 is a partial cross-sectional side view associated with the actuating lever of FIG. 1. It is a principal part plane sectional view (1) for demonstrating the opening-and-closing state of the door which concerns on this invention. It is a principal part plane sectional view (2) for demonstrating the opening-and-closing state of the door which concerns on this invention. It is a front state figure showing other examples of the present invention. It is principal part incision side sectional drawing which shows the other Example of this invention.

Explanation of symbols

2 Refrigerated container 4 Container body 6 Slide door opening / closing device 8 Door 10 Swing plate 12 Door frame 14 Slide rail 16 Slide 18 Horizontal guide groove 20 Support tube 22 Support lever support tube 24 Lock shaft rod 26 Latch cam 28 Actuation lever 30 Insertion groove 32 Latch holder

Claims (3)

In the sliding door opening and closing device (6) of the refrigeration container,
A horizontal guide groove (18) is installed in the front of the container body (4) near the door (8), and a slide rail (14) and a slide that slides along the slide rail (14) in the horizontal guide groove (18) ( 16) is disposed, and a support pipe (20) penetrating vertically is mounted in the door (8), and a vertical rotation shaft rod (21) is rotatably fitted therein, and the slide (16) is fitted to the slide (16). A swing plate (10) is rotatably coupled via a shaft portion, and the vertical rotation shaft rod (21) is coupled from the axial direction to the tip of the swing plate (10), and the door frame (12) The upper and lower frames (12a, 12b) are formed with insertion grooves (30) for receiving the upper and lower exposed portions of the support tube (20) or the vertical rotating shaft rod (21). During the closing operation of 8), the slide (16) comes into contact with a stopper on one end of the slide rail (14) and the swing plate (10) closes the door (8). Performs ring, wherein said exposed portion is inserted into the insertion groove (30), the sliding door opening and closing device of the refrigerated container.   An operating lever support tube (22) is mounted in the door (8), and a lock shaft rod (24) having a latch cam (26) is fitted into the operation lever support tube (22), and the lock shaft rod ( 24) is rotated by an operating lever (28) formed on the front surface of the door (8), and the latch cam (26) is latched by a latch holder (32) installed on the upper and lower frames (12a, 12b). The sliding door opening and closing device of the refrigeration container according to claim 1, wherein   A latch cam (26A) is mounted on the vertical rotating shaft rod (21), and a latch holder (32A) is installed on the upper and lower frames (12a, 12b), so that the operation is exposed on the front surface of the door (8). The sliding door opening and closing device for a refrigeration container according to claim 1, wherein the lever (28) rotates the vertical rotating shaft (21) and the latch cam (26A) is latched by the latch holder (32A). .

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