Shed structure

Abstract

This provides a shelf structure that allows the height dimension of the receiving element to be changed without replacing the shelf body. [Solution] The receiving body 20 consists of a fall prevention wall 39 erected on the rear edge of the top wall 25 in the left-right direction, and a guard plate 41 that is detachably attached to the top wall 25 and the fall prevention wall 39 via a mounting structure 40. When the guard plate 41 is attached, the guard plate 41 has a plate body 42 that rises upward from the top wall 25 in the left-right direction. When the vertical dimension from the top surface of the top wall 25 to the upper end of the fall prevention wall 39 is defined as the height dimension H1 of the fall prevention wall 39, and the vertical height dimension from the top surface of the top wall 25 to the upper end of the plate body 42 when the guard plate 41 is attached is defined as the height dimension H2 of the guard plate 41, the receiving body 20 is equal to inequality H1

Description

Technical Field

[0001] The present invention relates to a shelf structure applicable to furniture such as refrigerated showcases and display shelves called gondolas (registered trademark), and more particularly to a shelf structure having a receiving body for preventing articles displayed from the rear end of the shelf body from falling.

Background Art

[0002] In a shelf structure related to furniture installed in a store, a receiving body for receiving articles and preventing the articles from falling from the shelf body is provided at the rear end of the shelf body on which the articles are displayed. Such a shelf structure having such a receiving body is known, for example, from Patent Document 1. In the furniture (storage shelf) of Patent Document 1, the shelf body (shelf board) constituting the shelf structure includes a top wall (upper surface board) formed of a horizontally long rectangular plate on which articles are placed, front and rear reinforcing edges bent downward from the front and rear edges of the top wall, and side end plates bent downward from the left and right edges of the top wall. A receiving body (stopping member) for receiving articles is integrally fixed to the rear edge of the shelf body, and the receiving body protrudes upward from the upper surface of the top wall. The shelf structure is installed in a vertically multi-stage manner with respect to the furniture body (support column).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By integrally providing a receiving body that protrudes above the upper surface of the ceiling wall on the shelf body like the shelf structure of Patent Document 1, it is possible to receive an article moving rearward on the ceiling wall with the receiving body and prevent the article from falling from the rear end of the shelf body. In order to accurately receive the article with the receiving body, it is important that the upper end position of the receiving body is above the center of gravity position of the product. However, in the form in which the receiving body is integrally provided on the shelf body, in order to change the upper end position of the receiving body, it is necessary to replace the shelf body with a shelf body provided with a receiving body having a height dimension corresponding to the article to be displayed. That is, it is necessary to prepare shelf bodies having different height dimensions of the receiving body and replace the shelf body according to the article. Therefore, in a store such as a convenience store that handles a variety of articles, it is inevitable that the storage and management of the shelf body become complicated, and the work of replacing the shelf body also requires time and effort for display.

[0005] An object of the present invention is to provide a shelf structure capable of changing the height dimension of a receiving body without replacing the shelf body.

Means for Solving the Problems

[0006] The shelf structure according to the present invention includes a shelf body 17 having a horizontal ceiling wall 25 whose upper surface is a placement surface for articles, and a receiving body 20 provided for the purpose of preventing articles from falling from the rear end of the ceiling wall 25. The receiving body 20 includes a fall prevention wall 39 erected in the left-right direction at the rear edge of the ceiling wall 25, and a guard plate 41 detachably attached to the ceiling wall 25 and the fall prevention wall 39 via a mounting structure 40. The guard plate 41 has a plate body 42 rising upward from the ceiling wall 25 in the left-right direction of the ceiling wall 25 in the mounted state of the guard plate 41. When the vertical dimension from the upper surface of the ceiling wall 25 to the upper end of the fall prevention wall 39 is defined as the height dimension H1 of the fall prevention wall 39, and the vertical height dimension from the upper surface of the ceiling wall 25 to the upper end of the plate body 42 in the mounted state of the guard plate 41 is defined as the height dimension H2 of the guard plate 41, the receiving body 20 is configured to satisfy the inequality H1 < H2.

[0007] The guard plate 41 is integrally fixed to the rear side of the plate body 42 and includes a mounting body 43 that is responsible for attaching the guard plate 41 to the top wall 25 and the fall prevention wall 39. The mounting structure 40 includes a first engagement structure 44 provided between the top wall 25 and the mounting body 43 at the lower end of the fall prevention wall 39, and a second engagement structure 45 provided between the fall prevention wall 39 and the mounting body 43 at the upper end of the fall prevention wall 39.

[0008] The mounting body 43 includes a fixing wall 48 that is fixed to the plate body 42. The first engagement structure 44 consists of an insertion slit 49 extending in the left-right direction, which is opened at predetermined intervals in the top wall 25 adjacent to the lower front end of the fall prevention wall 39 along the fall prevention wall 39, and an insertion piece 50 that protrudes from the lower edge of the fixing wall 48 to correspond to the insertion slit 49 and engages with the insertion slit 49 from above. When the insertion piece 50 is engaged with the insertion slit 49, the plate body 42 is received and supported by the top wall 25.

[0009] When the insertion piece 50 is engaged with the insertion slit 49, the insertion piece 50 is held in place by the insertion slit 49, restricting its movement in the front-to-back and left-to-right directions relative to the top wall 25.

[0010] The mounting body 43 includes a fixing wall 48 that is fixed to the plate body 42. The second engagement structure 45 consists of a fall prevention wall-side locking portion 51 that extends rearward from the upper end of the fall prevention wall 39, and a plate-side locking portion 52 that extends rearward from the upper end of the fixing wall 48 and engages with the fall prevention wall-side locking portion 51 from above. When the plate-side locking portion 52 is engaged with the fall prevention wall-side locking portion 51, the plate-side locking portion 52 is received and supported by the fall prevention wall-side locking portion 51.

[0011] The anti-drop wall side locking portion 51 includes a support wall 53 formed by a horizontal wall extending rearward from the upper end of the anti-drop wall 39, and a regulating wall 54 formed by a vertical wall extending downward from the rear end of the support wall 53. The plate side locking portion 52 includes a horizontal locking wall 55 formed by a horizontal wall extending rearward from the upper end of the fixed wall 48, and a vertical locking wall 56 formed by a vertical wall extending downward from the rear end of the horizontal locking wall 55. In a state where the plate side locking portion 52 is engaged with the anti-drop wall side locking portion 51, the horizontal locking wall 55 of the plate side locking portion 52 is received and supported from below by the support wall 53 of the anti-drop wall side locking portion 51, and the anti-drop wall 39 and the regulating wall 54 are arranged between the fixed wall 48 and the vertical locking wall 56 of the plate side locking portion 52.

Advantages of the Invention

[0012] In the shelf structure of the present invention, the receiving body 20 is composed of an anti-drop wall 39 erected in the left-right direction at the rear edge of the ceiling wall 25, and a guard plate 41 having a plate body 42 that is detachably attached to the ceiling wall 25 and the anti-drop wall 39 via a mounting structure 40. Moreover, when the vertical dimension from the upper surface of the ceiling wall 25 to the upper end of the anti-drop wall 39 is defined as the height dimension H1 of the anti-drop wall 39, and the vertical height dimension from the upper surface of the ceiling wall 25 to the upper end of the plate body 42 in the mounted state of the guard plate 41 is defined as the height dimension H2 of the guard plate 41, the receiving body 20 is configured to satisfy the inequality H1 < H2. According to this, in the case of an article with a relatively large height dimension, by attaching the guard plate 41 via the mounting structure 40, the article can be received by the plate body 42 to prevent the article from falling. On the other hand, in the case of an article with a relatively small height dimension, the guard plate 41 can be separated, and the article can be received by the anti-drop wall 39 to prevent the article from falling. As described above, according to the shelf structure of the present invention, it is not necessary to replace the shelf body as in the prior art, and the height dimension of the receiving body 20 can be changed by a simple operation of only attaching and detaching the guard plate 41.

[0013] Furthermore, in the shelf structure of the present invention, by providing multiple types of guard plates 41 with different height dimensions H2, it is possible to configure receiving bodies 20 of various heights. Conventionally, it is necessary to store and manage replacement shelf bodies, but in the shelf structure of the present invention, it is only necessary to attach and detach guard plates 41 that are relatively small relative to the shelf body 17. Therefore, according to the present invention, the trouble of storing and managing replacement shelf bodies can be eliminated.

[0014] The guard plate 41 is integrally fixed to the rear side of the plate body 42 and includes a mounting body 43 that is responsible for attaching the guard plate 41 to the top wall 25 and the fall prevention wall 39. The mounting structure 40 includes a first engagement structure 44 provided between the top wall 25 and the mounting body 43 at the lower end of the fall prevention wall 39, and a second engagement structure 45 provided between the fall prevention wall 39 and the mounting body 43 at the upper end of the fall prevention wall 39. Since the guard plate 41 can be supported by the two engagement structures 44 and 45, the rotational moment generated when an object is caught by the plate body 42 can be accurately absorbed, preventing the guard plate 41 from tilting. Specifically, when the plate body 42 catches an object, a rotational moment is generated in the guard plate 41 that causes the upper end to rotate backward around the mounting structure 40. At this time, the mounting structure 40 can counteract the rotational moment using the lever principle with the two vertically spaced engagement structures 44 and 45, so it can accurately absorb even relatively large rotational moments.

[0015] The first engagement structure 44 consists of an insertion slit 49 extending in the left-right direction, which is opened at predetermined intervals in the top wall 25 adjacent to the front of the lower end of the fall prevention wall 39 along the fall prevention wall 39, and an insertion piece 50 which is provided protruding from the lower edge of the fixing wall 48 of the mounting body 43 to correspond to the insertion slit 49 and engages with the insertion slit 49 from above. When the insertion piece 50 is engaged with the insertion slit 49, and the plate body 42 is supported by the top wall 25, there is no need to provide a separate fastening structure, and the engagement state of the first engagement structure 44 can be maintained by the weight of the guard plate 41. Furthermore, the engagement state of the first engagement structure 44 can be prevented from being unintentionally released by the weight of the guard plate 41.

[0016] When the insertion piece 50 is engaged with the insertion slit 49, the insertion piece 50 is held in place by the insertion slit 49, and its movement in the front-rear and left-right directions relative to the top wall 25 is restricted. This allows the guard plate 41 to be positioned by the first engagement structure 44, preventing the guard plate 41 from shifting in the front-rear and left-right directions relative to the shelf body 17.

[0017] The second engagement structure 45 consists of a wall-side locking portion 51 extending rearward from the upper end of the fall prevention wall 39, and a plate-side locking portion 52 extending rearward from the upper end of the fixed wall 48 of the mounting body 43 and engaging with the wall-side locking portion 51 from above. When the plate-side locking portion 52 is engaged with the wall-side locking portion 51, and the plate-side locking portion 52 is received and supported by the wall-side locking portion 51, there is no need to provide a separate fastening structure, and the engagement state of the second engagement structure 45 can be maintained by the weight of the guard plate 41. Furthermore, the weight of the guard plate 41 prevents the engagement state of the second engagement structure 45 from being unintentionally released.

[0018] When the plate-side locking portion 52 is engaged with the wall-side locking portion 51, the horizontal locking wall 55 of the plate-side locking portion 52 is received and supported from below by the support wall 53 of the wall-side locking portion 51, and when the fall prevention wall 39 and the regulation wall 54 are arranged between the fixed wall 48 and the vertical locking wall 56 of the plate-side locking portion 52, the fall prevention wall 39 and the wall-side locking portion 51 receive the forward and backward movement of the fixed wall 48 and the vertical locking wall 56, and the forward and backward movement of the guide plate 41 with respect to the shelf body 17 can be restricted.

Brief Description of Drawings

[0019] [Figure 1] It is a longitudinal side view showing a main part of a shelf structure according to an embodiment of the present invention. [Figure 2] It is a longitudinal side view of a showcase to which the same shelf structure is applied. [Figure 3] It is a front view of a showcase to which the same shelf structure is applied. [Figure 4] It is an exploded perspective view of the same shelf structure. [Figure 5] It is a longitudinal side view showing the same shelf structure. [Figure 6] It is a cross-sectional view taken along line A-A in FIG. 5. <l [Figure 7] It is a longitudinal side view showing a mounting structure.

Mode for Carrying Out the Invention

[0020] (Embodiment) FIGS. 1 to 7 show an embodiment in which the shelf structure according to the present invention is applied to an open-type refrigerated showcase. In this embodiment, front-back, left-right, and up-down refer to the cross arrows shown in FIGS. 2 and 3 and the front-back, left-right, and up-down indications written near each arrow.

[0021] As shown in Figure 2, the refrigerated display case comprises a main case (fixture body) 1 consisting of an insulated box with a front opening. The interior 2 enclosed by the main case 1 is divided by an inner case 3 into a display room 4 for refrigerated display of goods (articles) and a ventilation duct 5. The ventilation duct 5 is equipped with an evaporator 6 that constitutes the refrigeration cycle and a circulation fan 7 that forms an airflow circulating in the interior 2. When the circulation fan 7 is driven, circulating air is blown out from an outlet 8 located at the upper front end of the display room 4 toward an intake 9 located at the lower front end, forming an air curtain at the front opening. The circulation fan 7 is driven continuously while the refrigerated display case is in operation, and the resulting air curtain suppresses the intrusion of outside air into the display room 4. The interior 2 is cooled by the circulating air that has undergone heat exchange in the evaporator 6. The machine room 10, located on the lower side of the main case 1, houses a compressor 11 and a condenser 12 that, together with the evaporator 6 located in the ventilation duct 5, constitute the refrigeration cycle, as well as cooling fans 13 for cooling both 11 and 12.

[0022] As shown in Figures 2 and 3, the display room 4 is equipped with a multi-tiered shelf structure 16 for displaying products such as food and beverages (Figure 2 shows a three-tiered arrangement). The shelf structure 16 comprises a shelf body 17 on which products are placed, a shelf support frame 18 that supports the shelf body 17, a pair of left and right sliding rails 19 provided between the shelf body 17 and the shelf support frame 18, and a receiving body 20 that prevents products placed on the top wall 25 from falling from the rear end of the top wall 25. The shelf structure 16 is installed on a pair of left and right shelf posts 21 provided between the main case 1 and the inner case 3 at the back of the storage room 2. Specifically, the shelf posts 21 have locking holes 22 at predetermined intervals in the vertical direction, and the shelf structure 16 is installed on the pair of shelf posts 21 by locking hooks 36 (described later) into these locking holes 22 (see Figure 4).

[0023] As shown in Figures 4 and 5, the shelf body 17 includes a horizontal top wall 25 whose upper surface serves as the product placement surface, and reinforcing walls 26 extending downward from the front and left and right edges of the top wall 25 to reinforce the top wall 25. Rail frames 27 are fixed to the left and right sides of the bottom surface of the top wall 25, and a pair of front and rear reinforcing frames 28, 28, formed in an inverted hat shape in cross-section, are fixed to connect the left and right rail frames 27, 27. The front reinforcing frame 28 has a groove frame 29 integrally provided that extends to the front of the reinforcing wall 26 provided on the front edge of the top wall 25, and a mounting groove 30 for attaching price rails, etc., is formed between the front reinforcing frame 28 and the groove frame 29. The top wall 25 is also reinforced by these rail frames 27 and reinforcing frames 28. As shown in Figure 6, each rail frame 27 is formed in a U-shape in cross-section that opens downward and is fixed to the inside corner between the top wall 25 and the left and right reinforcing walls 26. The movable rails 19a of the slide rail 19 are fixed to the vertical walls on the left and right inner sides of the rail frame 27.

[0024] As shown in Figures 4 and 6, the shelf support frame 18 is composed of a pair of left and right brackets 33 and a connecting frame 34 made of a folded plate that connects the left and right brackets 33 to each other. The brackets 33 are provided with connecting walls 35 on their lower edges for connecting to the connecting frame 34. The connecting walls 35 are formed by bending in a crank shape, and by connecting the ends of the left and right connecting walls 35 with the connecting frame 34, the pair of brackets 33 and the connecting frame 34 are integrally formed as the shelf support frame 18. The fixing rail 19b of the slide rail 19 is fixed to the inner surface of each bracket 33. Hooks 36 formed in the aforementioned locking holes 22 are provided above and below the rear end of each bracket 33, with two hooks 36 provided at the upper rear end of the bracket 33 and one hook 36 provided at the lower rear end.

[0025] In Figure 6, the slide rail 19 is a commercially available bearing-type slide rail, consisting of the movable rail 19a and fixed rail 19b, an intermediate rail 19c positioned between the two rails 19a and 19b, and a plurality of steel balls 19d. By positioning such a slide rail 19 between the shelf body 17 and the shelf support frame 18, the shelf structure 16 of this embodiment is configured to allow the shelf body 17 to slide between a display position located at the back of the display room 4 (shelf structures 16 located on the upper and lower levels in Figure 2) and a pull-out position extended forward from the display position (shelf structure 16 located on the middle level in Figure 2). When the shelf body 17 is pulled out to the pull-out position, the shelf body 17 moves to the outside of the display room 4, making it easier to display products on the shelf body 17. However, since a gap is formed between the inner case 3 and the shelf body 17, there is a risk that products may fall from the rear end of the shelf body 17. A receiving body 20 is provided to prevent such product falls.

[0026] As shown in Figure 1, the receiving body 20 consists of a fall prevention wall 39 erected on the rear edge of the top wall 25 and a guard plate 41 that is detachably attached to the top wall 25 and the fall prevention wall 39 via a mounting structure 40. In this embodiment, the fall prevention wall 39 constituting the receiving body 20 is made of a flat plate with a constant height dimension in the vertical direction, and the rear end of the top wall 25 is bent upward so that the fall prevention wall 39 is integrally formed with the shelf body 17. The guard plate 41 comprises a plate body 42 erected upward from the top wall 25 when mounted, and a mounting body 43 integrally fixed to the rear side of the plate body 42 (see Figure 5). The mounting structure 40 consists of a first engagement structure 44 provided between the top wall 25 and the mounting body 43 at the lower end of the fall prevention wall 39, and a second engagement structure 45 provided between the upper end of the fall prevention wall 39 and the mounting body 43 at the upper end of the fall prevention wall 39.

[0027] As shown in FIG. 4, the plate body 42 is formed of a horizontally long plate having a horizontal dimension slightly smaller than that of the ceiling wall 25. The left and right dimensions of the upper side of the plate body 42 are set smaller than the left and right dimensions of the lower side of the plate body 42, and the left and right edges are formed in a stepped shape. Further, as shown in FIG. 1, the upper end of the plate body 42 is bent in an L shape toward the rear side, preventing the upper edge of the guard plate 41 from becoming sharp and suppressing the occurrence of scratches or the like on the product. The vertical dimension from the upper surface of the ceiling wall 25 to the upper end of the fall prevention wall 39 is defined as the height dimension H1 of the fall prevention wall 39, and when the vertical height dimension from the upper surface of the ceiling wall 25 to the upper end of the plate body 42 in the mounted state of the guard plate 41 is defined as the height dimension H2 of the guard plate 41, the receiving body 20 is configured to satisfy the inequality H1 < H2.

[0028] A plurality of types of guard plates 41 having different height dimensions H2 of the plate 41 can be prepared. The receiving body 20 mounts the guard plate 41 having the height dimension H2 corresponding to the product displayed on the shelf body 17, and receives the product with the guard plate 41 to prevent the product from falling. Further, when displaying a product that does not require the mounting of the guard plate 41, that is, a product that can be received by the fall prevention wall 39, the guard plate 41 is separated, and the product is received by the fall prevention wall 39 to prevent the product from falling.

[0029] As shown in Figure 7, the mounting body 43 is equipped with horizontally elongated rectangular fixing walls 48 fixed to the plate body 42. The left-right dimension of the fixing wall 48 is approximately the same as the left-right dimension of the upper side of the guard plate 41, and the fixing wall 48 is welded to the plate body 42 so that the lower edges of both (plate body 42 and fixing wall 48) coincide. The first engagement structure 44 consists of an insertion slit 49 that opens in the top wall 25 adjacent to the front of the lower end of the fall prevention wall 39 along the fall prevention wall 39, and an insertion piece 50 that protrudes from the lower edge of the fixing wall 48 to correspond to the insertion slit 49. As shown in Figure 4, the insertion slit 49 consists of a horizontally elongated rectangular hole extending in the left-right direction, and multiple insertion pieces are provided at predetermined intervals in the left-right direction of the top wall 25. The insertion pieces 50 consist of horizontally elongated rectangular plates with rounded lower corners, and multiple insertion pieces are provided corresponding to the insertion slit 49 (see Figure 6). In this embodiment, the insertion slits 49 are formed at three locations on the top wall 25: the left and right ends and the center in the left-right direction, and the insertion pieces 50 are formed at three locations on the fixed wall 48: the left and right ends and the center in the left-right direction.

[0030] The left-right length dimension of each insertion slit 49 is approximately the same as the left-right length dimension of each insertion piece 50, and the front-rear slit width dimension of each insertion slit 49 is approximately the same as the front-rear plate thickness dimension of each insertion piece 50. Furthermore, when the first engagement structure 44 is engaged, the guard plate 41 is supported by the top wall 25, with the plate body 42 and the fixed wall 48 being received by it. Due to this relationship, when the first engagement structure 44 is engaged, the upward movement of the guard plate 41 is restricted by its own weight, and its movement in the front-rear and left-right directions is restricted by the insertion pieces 50 and the insertion slits 49. In other words, the upward, front-rear, and left-right movement of the guard plate 41 is restricted relative to the top wall 25.

[0031] The insertion slit 49 and insertion piece 50 of the first engagement structure 44 are engaged by aligning the corresponding insertion slit 49 and insertion piece 50, and then inserting the insertion piece 50 into the insertion slit 49 from above. Conversely, to release the engagement of the first engagement structure 44, the guide plate 41 is lifted upward, which releases the insertion piece 50 from the insertion slit 49 and separates the first engagement structure 44.

[0032] As shown in Figure 7, the second engagement structure 45 consists of a fall prevention wall-side locking portion 51 extending rearward from the upper end of the fall prevention wall 39, and a plate-side locking portion 52 extending rearward from the upper end of the fixed wall 48. More specifically, the fall prevention wall-side locking portion 51 includes a support wall 53 consisting of a horizontal wall extending rearward from the upper end of the fall prevention wall 39, and a restricting wall 54 consisting of a vertical wall extending downward from the rear end of the support wall 53. The plate-side locking portion 52 includes a horizontal locking wall 55 consisting of a horizontal wall extending rearward from the upper end of the fixed wall 48, and a vertical locking wall 56 consisting of a vertical wall extending downward from the rear end of the horizontal locking wall 55.

[0033] The fall prevention wall-side locking portion 51 (support wall 53 and restricting wall 54) is provided across the left-right direction of the fall prevention wall 39, and similarly, the plate-side locking portion 52 (horizontal locking wall 55 and vertical locking wall 56) is provided across the left-right direction of the fixed wall 48. When the second engagement structure 45 is engaged, the horizontal locking wall 55 is supported from below by the support wall 53, and the fall prevention wall 39 and the restricting wall 54 are positioned between the fixed wall 48 and the vertical locking wall 56 of the plate-side locking portion 52. Due to this relationship, the plate-side locking portion 52 is restricted from moving in the front-rear direction relative to the fall prevention wall-side locking portion 51. In this embodiment, the front-rear dimension of the horizontal locking wall 55 is formed to be larger than the front-rear dimension of the support wall 53, and when the plate-side engagement portion 52 is engaged with the fall prevention wall-side engagement portion 51, a gap is formed between the rear surface of the restricting wall 54 and the front surface of the vertical locking wall 56. The guard plate 41 can tilt slightly forward and backward by the amount of the gap, with the first engagement structure 44 as the pivot point.

[0034] The locking portions 51 and 52 of the second engagement structure 45 are engaged by aligning the plate-side locking portion 52 above the protective wall-side locking portion 51, and then engaging the plate-side locking portion 52 with the protective wall-side locking portion 51 from above. Conversely, to release the engagement of the second engagement structure 45, the guide plate 41 is lifted upward, which releases the attachment of the plate-side locking portion 52 to the protective wall-side locking portion 51 and separates the first engagement structure 44. In this embodiment, the first engagement structure 44 and the second engagement structure 45 are configured to be engaged simultaneously, and the engagement of both engagement structures 44 and 45 can be established by grasping the guard plate 41 by hand and operating the plate 41 downward in the procedure described above. Also, the engagement of both engagement structures 44 and 45 can be released by grasping the guard plate 41 by hand and operating the plate 41 upward.

[0035] The shelf structure 16 is equipped with a locking structure for holding the shelf body 17, which is slidable between a display position and a pull-out position, in the display position. As shown in Figure 5, the locking structure consists of a locking claw 61 provided on the shelf body 17 side and a claw hole 62 formed on the shelf support frame 18 side, into which the locking claw 61 engages. More specifically, the locking claw 61 is supported by a claw support piece 63 fixed to the lower surface of the groove frame 29 at the center of the groove frame 29 in the left-right direction, so as to be rotatable around a pivot axis 64 which is a horizontal axis extending in the left-right direction. In Figure 5, reference numeral 65 denotes a claw portion that catches in the claw hole 62, reference numeral 66 denotes an operating piece for rotating the locking claw 61, and reference numeral 67 denotes a kick spring that biases the locking claw 61 counterclockwise (leftward in Figure 5) around the pivot axis 64. The claw hole 62 opens into a lock piece 68 provided at the center of the connecting frame 34 in the left-right direction, extending forward (see Figure 4). The claw support piece 63 and the locking piece 68 are made of a bent plate body.

[0036] When the shelf body 17 is in the display position, the claw portion 65 of the locking claw 61 enters the claw hole 62 from below and catches, thereby restricting the movement of the shelf body 17 toward the pull-out position side (the state shown in FIG. 5). At this time, since the locking claw 61 is biased by the kick spring 67 in the direction in which the claw portion 65 enters the claw hole 62, the claw portion 65 does not disengage from the claw hole 62. By hanging a finger on the operating piece 66 and rotating the locking claw 61 counterclockwise (clockwise in FIG. 5) around the rotation shaft 64 against the biasing force of the kick spring 67, the claw portion 65 can be disengaged from the claw hole 62, the locked state by the locking structure is released, and the shelf body 17 can be slid from the display position to the pull-out position. After returning from the pull-out position to the display position, the claw portion 65 is made to enter the claw hole 62 to establish the locked state of the locking structure.

[0037] As described above, in the shelf structure 16 of the present embodiment, when the vertical dimension from the upper surface of the ceiling wall 25 to the upper end of the fall prevention wall 39 is defined as the height dimension H1 of the fall prevention wall 39, and the vertical height dimension from the upper surface of the ceiling wall 25 to the upper end of the plate body 42 in the state where the guard plate 41 is attached is defined as the height dimension H2 of the guard plate 41, the receiving body 20 is configured to satisfy the inequality H1 < H2. Therefore, in the case of an article having a relatively large height dimension, by attaching the guard plate 41 via the attachment structure 40, the article can be received by the plate body 42 to prevent the article from falling. On the other hand, in the case of an article having a relatively small height dimension, the guard plate 41 can be separated, and the article can be received by the fall prevention wall 39 to prevent the article from falling. From the above, according to the shelf structure 16 of the present embodiment, there is no need to replace the shelf body as in the prior art, and the height dimension of the receiving body 20 can be changed by a simple operation of only attaching and detaching the guard plate 41.

[0038] Furthermore, in the shelf structure 16 of this embodiment, by providing multiple types of guard plates 41 with different height dimensions H2, it is possible to configure receiving bodies 20 of various heights. Conventionally, it is necessary to store and manage replacement shelf bodies, but in the shelf structure 16 of this embodiment, it is only necessary to attach and detach guard plates 41 that are relatively small compared to the shelf body 17. Therefore, the trouble of storing and managing replacement shelf bodies can be eliminated.

[0039] The mounting structure 40 includes a first engagement structure 44 provided between the top wall 25 and the mounting body 43 at the lower end of the fall prevention wall 39, and a second engagement structure 45 provided between the fall prevention wall 39 and the mounting body 43 at the upper end of the fall prevention wall 39. As a result, the guard plate 41 can be supported by the two engagement structures 44 and 45, and the rotational moment generated when the plate body 42 receives an object can be accurately absorbed, preventing the guard plate 41 from tilting. Specifically, when the plate body 42 receives an object, a rotational moment is generated in the guard plate 41 that causes the upper end to rotate backward around the mounting structure 40. At this time, the mounting structure 40 can counteract the rotational moment using the lever principle with the two vertically spaced engagement structures 44 and 45, so even a relatively large rotational moment can be accurately absorbed.

[0040] The system is configured such that the engagement state of both engagement structures 44 and 45 is simultaneously established by moving the guard plate 41 in the vertical direction, and the established engagement state of both engagement structures 44 and 45 is simultaneously released. Therefore, the engagement state of both engagement structures 44 and 45 can be established with a single touch by simply grasping the separated guard plate 41 and moving it downwards. Conversely, the engagement state of both engagement structures 44 and 45 can be released with a single touch by simply grasping the mounted guard plate 41 and moving it upwards.

[0041] The first engagement structure 44 consists of an insertion slit 49 extending in the left-right direction, which is opened at predetermined intervals in the top wall 25 adjacent to the front of the lower end of the fall prevention wall 39 along the fall prevention wall 39, and an insertion piece 50 which is provided protruding from the lower edge of the fixing wall 48 of the mounting body 43 to correspond to the insertion slit 49 and engages with the insertion slit 49 from above. With the insertion piece 50 engaged with the insertion slit 49, the plate body 42 is received and supported by the top wall 25, so there is no need to provide a separate fastening structure, and the engagement state of the first engagement structure 44 can be maintained by the weight of the guard plate 41. In addition, the engagement state of the first engagement structure 44 can be prevented from being unintentionally released by the weight of the guard plate 41.

[0042] When the insertion piece 50 is engaged with the insertion slit 49, the insertion piece 50 is held in place by the insertion slit 49, restricting its movement in the front-rear and left-right directions relative to the top wall 25. This allows the guard plate 41 to be positioned by the first engagement structure 44, preventing the guard plate 41 from shifting in the front-rear and left-right directions relative to the shelf body 17.

[0043] The second engagement structure 45 is composed of a wall-side locking portion 51 extending rearward from the upper end of the fall prevention wall 39, and a plate-side locking portion 52 extending rearward from the upper end of the fixed wall 48 of the mounting body 43 and engaging with the wall-side locking portion 51 from above. When the plate-side locking portion 52 is engaged with the wall-side locking portion 51, the wall-side locking portion 52 is received and supported by the wall-side locking portion 51, so there is no need to provide a separate fastening structure, and the engagement state of the second engagement structure 45 can be maintained by the weight of the guard plate 41. In addition, the engagement state of the second engagement structure 45 can be prevented from being unintentionally released by the weight of the guard plate 41.

[0044] With the plate-side locking portion 52 engaged with the prevention wall-side locking portion 51, the horizontal locking wall 55 of the plate-side locking portion 52 is supported from below by the support wall 53 of the prevention wall-side locking portion 51. Furthermore, the fall prevention wall 39 and the restricting wall 54 are positioned between the fixed wall 48 and the vertical locking wall 56 of the plate-side locking portion 52. As a result, the fall prevention wall 39 and the prevention wall-side locking portion 51 can receive the forward and backward movement of the fixed wall 48 and the vertical locking wall 56, thereby restricting the forward and backward movement of the guide plate 41 relative to the shelf body 17.

[0045] In addition to the embodiments described above, the shelf structure 16 may be a fixed shelf structure 16 that does not have slide rails 19. A spacer can be interposed between the regulating wall 54 and the vertical locking wall 56 to prevent the second engagement structure 45 from tilting in the front-rear direction. The fixtures to which the present invention is applied are not limited to refrigerated display cases, but can also be applied to fixtures such as merchandise shelves and bookshelves. [Explanation of Symbols]

[0046] 17 Shelf Unit 20 Receptor 25 Ceiling Wall 39 Fall prevention wall 40 Mounting structure 41 Guard Plate 42 Plate body 43. Wearable body 44 First engagement structure 45 Second engagement structure 48 Fixed wall 49 Insertion slit 50 Insertion piece 51 Prevention wall side locking part 52 Plate-side locking part 53 Supporting wall 54 Barrier wall 55 Horizontal locking wall 56 Vertical locking wall H1 Height dimensions of fall prevention wall H2 Guard Plate Height Dimensions

Claims

1. The shelf body (17) has a horizontal top wall (25) whose upper surface is used as a surface for placing articles, and a receiving body (20) provided for the purpose of preventing articles from falling from the rear end of the top wall (25), The receiving body (20) consists of a fall prevention wall (39) erected in the left-right direction on the rear edge of the top wall (25), and a guard plate (41) that is detachably attached to the top wall (25) and the fall prevention wall (39) via a mounting structure (40). The guard plate (41), when installed, has a plate body (42) that extends from the top wall (25) upward in the left-right direction, A shelf structure characterized in that, when the vertical dimension from the top surface of the top wall (25) to the top end of the fall prevention wall (39) is defined as the height dimension (H1) of the fall prevention wall (39), and the vertical height dimension from the top surface of the top wall (25) to the top end of the plate body (42) when the guard plate (41) is installed is defined as the height dimension (H2) of the guard plate (41), the receiving body (20) is configured to satisfy the inequality (H1 < H2).

2. The guard plate (41) is integrally fixed to the rear side of the plate body (42) and includes a mounting body (43) that is responsible for attaching the guard plate (41) to the top wall (25) and the fall prevention wall (39). The shelf structure according to claim 1, wherein the mounting structure (40) comprises a first engagement structure (44) provided between the top wall (25) and the mounting body (43) at the lower end of the fall prevention wall (39), and a second engagement structure (45) provided between the fall prevention wall (39) and the mounting body (43) at the upper end of the fall prevention wall (39).

3. The mounting body (43) is equipped with a fixing wall (48) that is fixed to the plate body (42), The first engagement structure (44) consists of an insertion slit (49) extending in the left-right direction, which is opened at predetermined intervals in the top wall (25) adjacent to the lower front end of the fall prevention wall (39) along the fall prevention wall (39), and an insertion piece (50) which is provided protruding from the lower edge of the fixed wall (48) corresponding to the insertion slit (49) and engages with the insertion slit (49) from above. The shelf structure according to claim 2, wherein the plate body (42) is supported by the top wall (25) when the insertion piece (50) is engaged with the insertion slit (49).

4. The shelf structure according to claim 3, wherein, when the insertion piece (50) is engaged with the insertion slit (49), the insertion piece (50) is held in place by the insertion slit (49), thereby restricting the movement of the insertion piece (50) in the front-rear and left-right directions relative to the top wall (25).

5. The mounting body (43) is equipped with a fixing wall (48) that is fixed to the plate body (42), The second engagement structure (45) consists of a fall prevention wall-side locking portion (51) extending rearward from the upper end of the fall prevention wall (39), and a plate-side locking portion (52) extending rearward from the upper end of the fixed wall (48) and engaging with the fall prevention wall-side locking portion (51) from above. The shelf structure according to claim 2, wherein, in a state in which the plate-side locking portion (52) is engaged with the wall-side locking portion (51), the plate-side locking portion (52) is received and supported by the wall-side locking portion (51).

6. The fall prevention wall-side locking portion (51) comprises a support wall (53) consisting of a horizontal wall extending rearward from the upper end of the fall prevention wall (39), and a restricting wall (54) consisting of a vertical wall extending downward from the rear end of the support wall (53). The plate-side locking portion (52) comprises a horizontal locking wall (55) consisting of a horizontal wall extending rearward from the upper end of the fixed wall (48), and a vertical locking wall (56) consisting of a vertical wall extending downward from the rear end of the horizontal locking wall (55). The shelf structure according to claim 5, wherein, in a state in which the plate-side locking portion (52) is engaged with the prevention wall-side locking portion (51), the horizontal locking wall (55) of the plate-side locking portion (52) is received and supported from below by the support wall (53) of the prevention wall-side locking portion (51), and the fall prevention wall (39) and the regulating wall (54) are arranged between the fixed wall (48) and the vertical locking wall (56) of the plate-side locking portion (52).

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