An auxiliary assembly structure for a slide rail

Abstract

The present invention relates to an auxiliary assembly structure for a slide rail, which includes an adapter and a side member. Step portions are symmetrically arranged on the left and right sides of the adapter, and the thickness dimension of the step portion is substantially equivalent to the thickness dimension of the side member; the side member is assembled on the left or right side of the adapter; when the side member is assembled, its outer side surface is substantially flush with the outer side surface of the adapter, and at least part of the top surface and / or the front end surface of the side member is blocked by the step portion; and the fixed slide rail can also be assembled on the left or right side of the adapter, so that the side member, the fixed slide rail and the left and right sides of the adapter can be connected in a non-discriminatory manner, thereby simplifying the assembly structure, reducing the production cost, facilitating production and processing, and after the fixed slide rail is assembled with adapters of different sizes, the adapter is used to install in cabinets with different inner widths, so as to meet the assembly of the slide rail assembly with drawers of different left and right widths, and further improve the assembly flexibility of the drawer to meet the various drawer assembly requirements of different users.

Description

Technical Field

[0001] The present invention relates to an auxiliary assembly structure for a slide rail. Background Art

[0002] Chinese Patent Document No. CN205885096U discloses a connection adjustment device for a drawer slide rail on January 18, 2017. It includes a cabinet body, a drawer and a slide rail assembly. Among them, the slide rail assembly includes a fixed rail and a moving rail. The moving rail linearly slides on the fixed rail, and the front end of the fixed rail is connected to the side part and / or the bottom of the front end of the cabinet body, and the moving rail is connected to the drawer. The connection adjustment device is connected to the back panel of the cabinet body, and the rear end of the fixed rail is sleeved on the connection adjustment device. The connection adjustment device includes a supporting element, a fixing element and an adjusting element. The supporting element can slide on the fixing element, the rear end of the fixed rail is sleeved on the supporting element, the fixing element is fixedly connected to the back panel, one end of the adjusting element acts on the supporting element, and the other end acts on the fixing element. The position where the supporting element slides relative to the fixing element is locked and / or unlocked by acting on the adjusting element with a tool or manually. It is said that the rear end of the fixed rail of the above structure can linearly slide horizontally on the fixing element through the supporting element, so that the appropriate sliding position can be automatically found during the assembly of the slide rail assembly. However, after the left and right slide rail assemblies are respectively fixedly connected to the cabinet body, their left and right widths are already determined, and they can only be assembled with the corresponding drawer, with low assembly flexibility and inability to be applied to drawers of different widths for installation, resulting in poor applicability. Therefore, it is necessary to further improve. Summary of the Invention

[0003] The purpose of the present invention is to provide an auxiliary assembly structure for a slide rail to overcome the deficiencies in the prior art.

[0004] An auxiliary assembly structure for a slide rail designed according to this purpose includes an adapter and a side member, characterized in that: step portions are symmetrically arranged on the left and right sides of the adapter, and the thickness dimension of the step portion is substantially equivalent to the thickness dimension of the side member; the side member is assembled on the left or right side of the adapter; when the side member is assembled, its outer side surface is substantially flush with the outer side surface of the adapter, and at least part of the top surface and / or the front end surface of the side member is blocked by the step portion.

[0005] A side member clamping portion is provided on the side member; a transfer clamping portion is provided on the adapter; the side member is clamped on the transfer clamping portion of the adapter through the side member clamping portion.

[0006] A side member positioning portion is provided on the side member; a transfer positioning portion is provided on the adapter; the side member is positioned on the transfer positioning portion of the adapter through the side member positioning portion.

[0007] A side member fixing portion is provided on the side member; a transfer member fixing portion is provided on the transfer member; the side member and the transfer member are connected to each other through the cooperation of the side member fixing portion and the transfer member fixing portion.

[0008] The transfer card-connecting portion, the transfer positioning portion, and the transfer member fixing portion are all provided on the left and right sides of the transfer member.

[0009] The transfer card-connecting portions on the left and right sides are correspondingly arranged and respectively provided with a plurality of them.

[0010] The transfer positioning portions on the left and right sides are correspondingly arranged and respectively provided with a plurality of them.

[0011] The transfer member fixing portions on the left and right sides are correspondingly arranged and respectively provided with a plurality of them.

[0012] The plurality of transfer card-connecting portions, the plurality of transfer positioning portions, and the plurality of transfer member fixing portions are independently arranged and form intervals with each other.

[0013] A plurality of side member card-connecting portions, side member positioning portions, and side member fixing portions are respectively provided; the plurality of side member card-connecting portions, the plurality of side member positioning portions, and the plurality of side member fixing portions are independently arranged and form intervals with each other.

[0014] The transfer card-connecting portion is a card edge and is symmetrically arranged on the left and right sides of the transfer member; the side member card-connecting portion is a card-connecting step and is correspondingly arranged with the transfer card-connecting portion.

[0015] The transfer positioning portion is a positioning post and is symmetrically arranged on the left and right sides of the transfer member; the side member positioning portion is a positioning hole and is correspondingly arranged with the transfer positioning portion.

[0016] The transfer member fixing portion is a fixing hole and is penetratingly arranged on the left and right sides of the transfer member; the side member fixing portion is a fixing hole and is correspondingly arranged with the transfer member fixing portion.

[0017] The transfer member is made of plastic, and a top step portion, a front step portion, a transfer card-connecting portion, a transfer positioning portion, and a transfer member fixing portion are provided thereon; the top step portion, the front step portion, the transfer card-connecting portion, the transfer positioning portion, and the transfer member fixing portion are all symmetrically integrally formed on the left and right sides of the transfer member.

[0018] The side member is made of plastic, and a side member card-connecting portion, a side member positioning portion, and a side member fixing portion are integrally formed thereon.

[0019] The side member card-connecting portion is correspondingly arranged with the transfer card-connecting portion and is mutually card-connected; the side member positioning portion is correspondingly arranged with the transfer positioning portion and is mutually positioned and cooperated; the side member fixing portion is correspondingly arranged with the transfer member fixing portion and is mutually cooperated and connected to realize the assembly of the side member on the left or right side of the transfer member.

[0020] The thickness dimensions of the top step portion and the front step portion are substantially equivalent to the thickness dimension of the side member; when the adapter is fixedly assembled with the side member, the outer side surface of the side member is substantially flush with the outer side surface of the adapter, and the top surface of the side member is blocked by the top step portion, and the front end surface is blocked by the front step portion.

[0021] This also includes a slide rail assembly, which at least includes a fixed slide rail; the side member and the fixed slide rail are generally assembled on the left side and / or the right side of the adapter to achieve a non-differentiated adaptable connection between the side member, the fixed slide rail and the left and right sides of the adapter; wherein, a fixing member is further provided between the side member, the fixed slide rail and the adapter, and they are fixedly connected to each other through the fixing member.

[0022] The fixed slide rail is provided with a slide rail clamping portion, a slide rail positioning portion and a slide rail fixing portion; the slide rail clamping portion is correspondingly arranged with the adapter clamping portion; the slide rail positioning portion is correspondingly arranged with the adapter positioning portion; the slide rail fixing portion, the side member fixing portion and the adapter fixing portion are correspondingly arranged.

[0023] When the side member is assembled on one side of the adapter, the fixed slide rail is clamped on the adapter clamping portion on the other side of the adapter through the slide rail clamping portion, and is positioned on the adapter positioning portion on the other side of the adapter through the slide rail positioning portion; the fixing member sequentially acts on the slide rail fixing portion, the adapter fixing portion and the side member fixing portion to realize the fixed connection of the fixed slide rail, the adapter and the side member.

[0024] The thickness dimensions of the top step portion and the front step portion are substantially equivalent to the thickness dimension of the fixed slide rail; when the fixed slide rail is fixedly assembled with the adapter, the outer side surface of the fixed slide rail is substantially flush with the other outer side surface of the adapter, and the top surface of the fixed slide rail is blocked by the top step portion on the other side, and the front end surface is blocked by the front step portion on the other side.

[0025] Through the improvement of the above structure, the present invention is provided with clamping parts, positioning parts, and fixing parts on both the left and right sides of the adapter. Corresponding clamping parts, positioning parts, and fixing parts are respectively provided on the side member and the fixed slide rail, so that the side member and the fixed slide rail can be universally assembled on the left and / or right sides of the adapter, realizing a non-differentiated adaptive connection between the side member, the fixed slide rail, and the left and right sides of the adapter. This not only simplifies the assembly structure among the adapter, the side member, and the fixed slide rail, enabling convenient, fast, and non-differentiated assembly among the three, but also effectively reduces the production cost and facilitates production and processing due to the convenient setting of the clamping parts, positioning parts, and fixing parts. Moreover, after the side member and the fixed slide rail are assembled, their outer sides are basically flush with the left and right sides of the adapter, and the top surface and the front end surface are also blocked by the step parts of the adapter, not only improving the assembly compactness among them, but also making their appearance more concise and tidy after assembly. Most importantly, after the fixed slide rail is assembled with adapters of different sizes, the adapter is then installed in cabinets with different inner widths, so as to meet the assembly of the slide rail assembly with drawers of different left and right widths, thereby improving the assembly flexibility of the drawers to meet the various drawer assembly requirements of different users.

[0026] Generally speaking, it has the characteristics of simple and reasonable structure, low manufacturing cost, convenient and flexible disassembly and assembly, high versatility, wide application range, etc., and has strong practicability. Brief Description of the Drawings

[0027] Figure 1 、 Figure 2 is a schematic exploded view of the adapter and the side member according to an embodiment of the present invention.

[0028] Figure 3 、 Figure 4 is a schematic assembled view of the adapter and the side member according to an embodiment of the present invention.

[0029] Figure 5 is a schematic exploded view of the adapter and the slide rail assembly according to an embodiment of the present invention.

[0030] Figure 6 is a schematic assembled view of the adapter and the slide rail assembly according to an embodiment of the present invention.

[0031] Figure 7 is a schematic assembled view of the adapter, the side member, the slide rail assembly, and the cabinet according to an embodiment of the present invention.

[0032] Figure 8 is a schematic sectional assembled view of the adapter, the side member, the slide rail assembly, and the cabinet according to an embodiment of the present invention. Detailed Description of the Embodiment

[0033] The present invention will be further described below in conjunction with the drawings and embodiments.

[0034] SeeFigures 1 - 8 , an auxiliary assembly structure for a slide rail, comprising an adapter 1 and a side member 2. Step portions are symmetrically arranged on the left and right sides of the adapter 1, and the thickness dimension of the step portions is substantially equivalent to the thickness dimension of the side member 2; the side member 2 is assembled on the left or right side of the adapter 1; when the side member 2 is assembled, its outer side surface is substantially flush with the outer side surface of the adapter 1, and at least part of the top surface and / or front end surface of the side member 2 is blocked by the step portions.

[0035] Specifically, a side member clamping portion 3 is provided on the side member 2; a transfer clamping portion 4 is provided on the adapter 1; the side member 2 is clamped on the transfer clamping portion 4 of the adapter 1 through the side member clamping portion 3.

[0036] A side member positioning portion 5 is provided on the side member 2; a transfer positioning portion 6 is provided on the adapter 1; the side member 2 is positioned on the transfer positioning portion 6 of the adapter 1 through the side member positioning portion 5.

[0037] A side member fixing portion 7 is provided on the side member 2; a transfer fixing portion 8 is provided on the adapter 1; the side member 2 and the adapter 1 are mutually connected through the cooperation of the side member fixing portion 7 and the transfer fixing portion 8.

[0038] The transfer clamping portion 4, the transfer positioning portion 6, and the transfer fixing portion 8 are all provided on the left and right sides of the adapter 1.

[0039] The transfer clamping portions 4 on the left and right sides are arranged corresponding to each other and are respectively provided with several.

[0040] The transfer positioning portions 6 on the left and right sides are arranged corresponding to each other and are respectively provided with several.

[0041] The transfer fixing portions 8 on the left and right sides are arranged corresponding to each other and are respectively provided with several.

[0042] The several transfer clamping portions 4, the several transfer positioning portions 6, and the several transfer fixing portions 8 are independently arranged and form intervals with each other.

[0043] The side member clamping portion 3, the side member positioning portion 5, and the side member fixing portion 7 are respectively provided with several; the several side member clamping portions 3, the several side member positioning portions 5, and the several side member fixing portions 7 are independently arranged and form intervals with each other.

[0044] The transfer clamping portion 4 is a clamping edge and is symmetrically arranged on the left and right sides of the adapter 1; the side member clamping portion 3 is a clamping step and is arranged corresponding to the transfer clamping portion 4.

[0045] The transfer positioning portion 6 is a positioning post and is symmetrically arranged on the left and right sides of the adapter 1; the side member positioning portion 5 is a positioning hole and is arranged corresponding to the transfer positioning portion 6.

[0046] The transfer and fixing part 8 is a fixing hole and is arranged in a penetrating manner on the left and right sides of the transfer member 1; the side member fixing part 7 is a fixing hole and is arranged corresponding to the transfer and fixing part 8.

[0047] More specifically, the transfer member 1 is made of plastic, and is provided with a top step portion 10, a front step portion 11, a transfer clamping portion 4, a transfer positioning portion 6, and a transfer fixing part 8; the top step portion 10, the front step portion 11, the transfer clamping portion 4, the transfer positioning portion 6, and the transfer fixing part 8 are integrally formed symmetrically on the left and right sides of the transfer member 1.

[0048] The side member 2 is made of plastic, and is integrally formed with a side member clamping portion 3, a side member positioning portion 5, and a side member fixing part 7.

[0049] The side member clamping portion 3 is arranged corresponding to the transfer clamping portion 4 and is clamped with each other; the side member positioning portion 5 is arranged corresponding to the transfer positioning portion 6 and is positioned and matched with each other; the side member fixing part 7 is arranged corresponding to the transfer fixing part 8 and is connected and matched with each other to realize the assembly of the side member 2 on the left or right side of the transfer member 1.

[0050] The thickness dimensions of the top step portion 10 and the front step portion 11 are substantially equivalent to the thickness dimension of the side member 2; when the transfer member 1 and the side member 2 are fixedly assembled, the outer side surface of the side member 2 is substantially flush with the outer side surface of the transfer member 1, and the top surface of the side member 2 is blocked by the top step portion 10, and the front end surface is blocked by the front step portion 11.

[0051] The present invention further includes a slide rail assembly, which at least includes a fixed slide rail 12; the side member 2 and the fixed slide rail 12 are assembled in a universal manner on the left and / or right side of the transfer member 1 to realize the non-differential adaptive connection between the side member 2, the fixed slide rail 12 and the left and right sides of the transfer member 1; wherein, a fixing member 9 is further arranged between the side member 2, the fixed slide rail 12 and the transfer member 1, and they are fixedly connected to each other through the fixing member 9.

[0052] The fixed slide rail 12 is provided with a slide rail clamping portion 13, a slide rail positioning portion 14, and a slide rail fixing part 15; the slide rail clamping portion 13 is arranged corresponding to the transfer clamping portion 4; the slide rail positioning portion 14 is arranged corresponding to the transfer positioning portion 6; the slide rail fixing part 15, the side member fixing part 7, and the transfer fixing part 8 are arranged corresponding to each other.

[0053] When the side member 2 is assembled on one side of the transfer member 1, the fixed slide rail 12 is clamped on the transfer clamping portion 4 on the other side of the transfer member 1 through the slide rail clamping portion 13, and is positioned on the transfer positioning portion 6 on the other side of the transfer member 1 through the slide rail positioning portion 14; the fixing member 9 acts fixedly on the slide rail fixing part 15, the transfer fixing part 8, and the side member fixing part 7 in sequence to realize the fixed connection of the fixed slide rail 12, the transfer member 1, and the side member 2.

[0054] This embodiment further includes a cabinet body X. After the fixing member 9 acts on the slide rail fixing portion 15, the adapter fixing portion 8, and the side member fixing portion 7 in sequence, it finally acts on the cabinet body X to finally fixedly install the fixed slide rail 12, the adapter 1, and the side member 2 on the cabinet body X, that is, the installation of the slide rail assembly and the cabinet body X is completed.

[0055] The thickness dimensions of the top step portion 10 and the front step portion 11 are substantially equivalent to the thickness dimension of the fixed slide rail 12; when the fixed slide rail 12 is fixedly assembled with the adapter 1, the outer side surface of the fixed slide rail 12 is substantially flush with the other outer side surface of the adapter 1, and the top surface of the fixed slide rail 12 is blocked by the top step portion 10 on the other side, and the front end surface is blocked by the front step portion 11 on the other side. That is, after the side member 2 and the fixed slide rail 12 are assembled, the outer side surfaces of the two are both substantially flush with the left and right side surfaces of the adapter 1, and the top surface and the front end surface are also blocked by the top step portion 10 and the front step portion 11 of the adapter 1, which not only improves the assembly compactness between them, but also makes their appearance more concise and tidy after assembly.

[0056] This structure is provided with a clamping portion, a positioning portion, and a fixing portion on both the left and right sides of the adapter 1, and corresponding clamping portions, positioning portions, and fixing portions are respectively provided on the side member 2 and the fixed slide rail 12, so that the side member 2 and the fixed slide rail 12 can be generally assembled on both the left and right sides of the adapter 1 to realize the non-differential adaptive connection between the side member 2, the fixed slide rail 12 and both the left and right sides of the adapter 1. This not only simplifies the assembly structure among the adapter 1, the side member 2, and the fixed slide rail 12, enabling the three to be assembled conveniently, quickly, and without difference, but also because the clamping portion, the positioning portion, and the fixing portion are all provided on the adapter 1, the side member 2, and the fixed slide rail 12, the structure is very simple. At the same time, it can reduce the investment in mold costs, effectively reduce the production cost, and facilitate production and processing.

[0057] At the same time, several transfer clamping portions 4, transfer positioning portions 6, transfer fixing portions 8, side member clamping portions 3, side member positioning portions 5, side member fixing portions 7, slide rail clamping portions 13, slide rail positioning portions 14, and slide rail fixing portions 15 that are spaced from each other cooperate with each other to realize the stable assembly among the adapter 1, the side member 2, and the fixed slide rail 12, and improve the load capacity of the drawer.

[0058] Most importantly, after the fixed slide rail 12 is assembled with the adapters 1 of different sizes, and then the adapter 1 is installed in the cabinet body X with different inner widths, so as to meet the assembly of the slide rail assembly with drawers of different left and right widths, thereby improving the assembly flexibility of the drawer to meet the various drawer assembly requirements of different users.

[0059] The above is the preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An auxiliary assembly structure for a slide rail, comprising an adapter (1) and a side member (2), characterized in that: The adapter (1) is symmetrically provided with stepped portions on the left and right sides, and the thickness dimension of the stepped portions is substantially equivalent to the thickness dimension of the side member (2); the side member (2) is assembled on the left or right side of the adapter (1); when the side member (2) is assembled, its outer side surface is substantially flush with the outer side surface of the adapter (1), and at least part of the top surface and / or the front end surface of the side member (2) is blocked by the stepped portion; A side member clamping portion (3) is provided on the side member (2); a transfer clamping portion (4) is provided on the adapter (1); the side member (2) is clamped on the transfer clamping portion (4) of the adapter (1) through the side member clamping portion (3); A side member positioning portion (5) is provided on the side member (2); a transfer positioning portion (6) is provided on the adapter (1); the side member (2) is positioned on the transfer positioning portion (6) of the adapter (1) through the side member positioning portion (5); It further includes a slide rail assembly, and the slide rail assembly at least includes a fixed slide rail (12); the side member (2) and the fixed slide rail (12) are generally assembled on the left and / or right side of the adapter (1) to achieve a non-discriminatory mating connection between the side member (2), the fixed slide rail (12) and the left and right sides of the adapter (1); wherein, a fixing member (9) is further provided between the side member (2), the fixed slide rail (12) and the adapter (1), and they are fixedly connected to each other through the fixing member (9); A slide rail clamping portion (13), a slide rail positioning portion (14), and a slide rail fixing portion (15) are provided on the fixed slide rail (12); the slide rail clamping portion (13) is correspondingly arranged with the transfer clamping portion (4); the slide rail positioning portion (14) is correspondingly arranged with the transfer positioning portion (6); the slide rail fixing portion (15), the side member fixing portion (7), and the transfer fixing portion (8) are correspondingly arranged; when the side member (2) is assembled on one side of the adapter (1), the fixed slide rail (12) is clamped on the transfer clamping portion (4) on the other side of the adapter (1) through the slide rail clamping portion (13), and is positioned on the transfer positioning portion (6) on the other side of the adapter (1) through the slide rail positioning portion (14); the fixing member (9) acts on the slide rail fixing portion (15), the transfer fixing portion (8), and the side member fixing portion (7) in sequence to achieve the fixed connection of the fixed slide rail (12), the adapter (1), and the side member (2); After the fixed slide rail (12) is assembled with adapters (1) of different sizes, the adapter (1) is then installed in cabinets with different inner widths, so as to meet the assembly of the slide rail assembly with drawers of different left and right widths.

2. The auxiliary assembly structure for a slide rail according to claim 1, wherein: A side member fixing portion (7) is provided on the side member (2); a transfer fixing portion (8) is provided on the adapter (1); the side member (2) and the adapter (1) are connected to each other through the cooperation of the side member fixing portion (7) and the transfer fixing portion (8).

3. The auxiliary assembly structure for a slide rail according to claim 1, wherein: The adapter card connection parts (4), adapter positioning parts (6) and adapter fixing parts (8) are all arranged on the left and right sides of the adapter (1); the adapter card connection parts (4) on the left and right sides are arranged corresponding to each other and each is provided with several; the adapter positioning parts (6) on the left and right sides are arranged corresponding to each other and each is provided with several; the adapter fixing parts (8) on the left and right sides are arranged corresponding to each other and each is provided with several; among the several adapter card connection parts (4), among the several adapter positioning parts (6), and among the several adapter fixing parts (8), they are independently arranged and form intervals with each other.

4. The auxiliary assembly structure for the slide rail according to claim 2, wherein: Several side part connection parts (3), side part positioning parts (5) and side part fixing parts (7) are respectively provided; among the several side part connection parts (3), among the several side part positioning parts (5), and among the several side part fixing parts (7), they are independently arranged and form intervals with each other.

5. The auxiliary assembly structure for a slide rail according to claim 2, characterized in that: The adapter card connection part (4) is a card edge and is symmetrically arranged on the left and right sides of the adapter (1); the side part connection part (3) is a connection step and is arranged corresponding to the adapter card connection part (4); the adapter positioning part (6) is a positioning post and is symmetrically arranged on the left and right sides of the adapter (1); the side part positioning part (5) is a positioning hole and is arranged corresponding to the adapter positioning part (6); the adapter fixing part (8) is a fixing hole and is arranged in a penetrating manner on the left and right sides of the adapter (1); the side part fixing part (7) is a fixing hole and is arranged corresponding to the adapter fixing part (8).

6. The auxiliary assembly structure for a slide rail according to claim 2, characterized in that: The adapter (1) is made of plastic, and is provided with a top step part (10), a front step part (11), an adapter card connection part (4), an adapter positioning part (6), and an adapter fixing part (8); the top step part (10), the front step part (11), the adapter card connection part (4), the adapter positioning part (6), and the adapter fixing part (8) are all symmetrically integrally formed on the left and right sides of the adapter (1); the side part (2) is made of plastic, and is integrally formed with a side part connection part (3), a side part positioning part (5), and a side part fixing part (7); the side part connection part (3) is arranged corresponding to the adapter card connection part (4) and is mutually connected by clamping; the side part positioning part (5) is arranged corresponding to the adapter positioning part (6) and is mutually positioned and matched; the side part fixing part (7) is arranged corresponding to the adapter fixing part (8) and is mutually connected and matched to realize the assembly of the side part (2) on the left or right side of the adapter (1); the thickness dimensions of the top step part (10) and the front step part (11) are basically equivalent to the thickness dimension of the side part (2); when the adapter (1) and the side part (2) are fixedly assembled, the outer side surface of the side part (2) is basically flush with the outer side surface of the adapter (1), and the top surface of the side part (2) is blocked by the top step part (10), and the front end surface is blocked by the front step part (11).

7. The auxiliary assembly structure for a slide rail according to claim 6, wherein: The thickness dimensions of the top step portion (10) and the front step portion (11) are substantially equivalent to the thickness dimension of the fixed slide rail (12); when the fixed slide rail (12) is fixedly assembled with the adapter (1), the outer side surface of the fixed slide rail (12) is substantially flush with the other outer side surface of the adapter (1), and the top surface of the fixed slide rail (12) is blocked by the top step portion (10) on the other side, and the front end surface is blocked by the front step portion (11) on the other side.

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