A bottom rail connecting piece and a bottom rail

Abstract

The application provides a bottom rail connecting piece and a bottom rail. The bottom rail connecting piece comprises a connecting main plate and a handle seat. The connecting main plate has a mounting cavity and a protruding part protruding outward along the connecting main plate. The protruding part is used for connecting with a hole position of a sliding rail. The handle seat is rotationally connected in the mounting cavity. One end of the handle seat close to the protruding part has an obliquely arranged rack part. The other end has a handle part. When the handle part is twisted, the rack part is driven to retract, so as to be engaged with a rack seat of the sliding rail. Through the hanging of the protruding part and the engagement of the rack part, firm connection between the connecting main plate and the sliding rail can be realized. Assembly tolerance is reduced. Smoothness and use stability of drawer sliding are improved. The bottom rail connecting piece can effectively bear the load and impact of the drawer.

Description

Technical Field

[0001] This application relates to the field of bottom rails, and in particular to a bottom rail connector and a bottom rail. Background Technology

[0002] Concealed drawer slides, also known as bottom-mounted drawer slides, are characterized by their entire slide assembly being hidden at the bottom of the drawer, with no exposed structure when viewed from the front. They are widely used in drawer-type structures such as furniture and equipment cabinets. Current bottom-mounted drawer slides are typically assembled by fixing the fixed rail to the drawer body with screws, while simultaneously securing the bottom-mounted rail connector to the drawer body. This connector then engages with the slide rail to complete the assembly. However, existing slide rails only have a few holes, and the connector directly attaches to these holes via its own connecting plate, relying entirely on the engagement between the holes and the connector's protrusion for positioning. When tolerances occur during manufacturing or deviations occur during installation, problems such as loosening, wobbling, or excessive assembly gaps at the connection between the connector and the slide rail can easily arise, affecting the smoothness of the drawer's movement and its stability. Utility Model Content

[0003] This application aims to improve at least one technical problem in the background art.

[0004] This application provides a bottom rail connector, which includes a connecting main board, the connecting main board having a mounting cavity and a protrusion protruding outward along the connecting main board, the protrusion being used to connect with a hole in a sliding rail;

[0005] A handle seat is rotatably connected within the mounting cavity. One end of the handle seat near the protrusion has an inclined rack portion, and the other end has a handle portion. When the handle portion is twisted, the rack portion retracts to engage with the rack seat of the sliding rail.

[0006] According to some technical solutions of this application, a connecting seat is also slidably connected to the connecting motherboard, the rack is disposed on the connecting seat, the connecting seat is provided with a limiting groove, a protrusion is provided on one side of the handle seat, and an elastic element is provided on the other side. The protrusion cooperates with the limiting groove, and the elastic element abuts against the inner sidewall of the connecting motherboard.

[0007] According to some technical solutions of this application, the connecting motherboard is further provided with a height adjustment mechanism, a left-right adjustment mechanism and a front-back adjustment mechanism. The height adjustment mechanism, the left-right adjustment mechanism and the front-back adjustment mechanism are all located in the mounting cavity. The left-right adjustment mechanism is located on the side away from the handle seat. The height adjustment mechanism is located adjacent to the left-right adjustment mechanism. The front-back adjustment mechanism is located on the side close to the left-right adjustment mechanism.

[0008] According to some technical solutions of this application, the left and right adjustment mechanism includes an adjusting nut, a threaded rod, and an adjusting block. The protrusion is provided on the adjusting block and is used to connect with the sliding rail. The other end of the adjusting block is fixedly connected to one end of the threaded rod, and the other end of the threaded rod is threadedly connected to the adjusting nut. The connecting main board is provided with a first mounting groove, and the adjusting nut corresponds to the first mounting groove.

[0009] According to some technical solutions of this application, the height adjustment mechanism includes an adjustment plate and a torsion rod. The connecting main board is provided with a second assembly groove on the side near the first assembly groove. The torsion rod is rotatably connected to the second assembly groove. One end of the adjustment plate is fixed to the torsion rod, and the bottom of the other end is inclined and extends outward along the mounting cavity.

[0010] According to some technical solutions of this application, a limiting hole is opened on one side of the second assembly groove, and an adjusting tooth is provided on the side of the mounting cavity near the limiting hole. A convex toothed rack is correspondingly provided on the outer wall of the torsion rod, and the convex toothed rack extends outward along the limiting hole and meshes with the adjusting tooth.

[0011] According to some technical solutions of this application, the front and rear adjustment mechanism includes an eccentric gear, a connecting plate and an adjustment shaft. The connecting main plate is provided with a third mounting groove on the side near the handle seat. The connecting plate is slidably disposed on the connecting main plate. The eccentric gear is rotatably connected to the third mounting groove. The adjustment shaft passes through and is fixed to the eccentric gear. The end of the adjustment shaft is fixedly connected to the connecting plate so that when the adjustment shaft rotates, it drives the connecting plate to move back and forth.

[0012] This application also provides a bottom support rail, which includes a fixed rail, a sliding rail, and a bottom support rail connector as described in the above technical solution. The fixed rail is slidably connected to the sliding rail. The sliding rail is provided with a connecting hole and a rack seat. The protrusion is connected to the connecting hole, and the rack seat is engaged with the rack portion.

[0013] The bottom rail connector provided in this application has at least the following beneficial effects: through the hooking of the protrusion and the meshing of the rack, a firm connection between the main board and the slide rail can be achieved, reducing assembly tolerances, improving the smoothness of drawer sliding and the stability of use, and effectively bearing the load and impact of the drawer. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of the support rail provided in the embodiments of this application;

[0015] Figure 2 A connection structure diagram of the bottom rail connector provided in the embodiments of this application;

[0016] Figure 3 This is a schematic diagram of the internal structure of the bottom rail connector provided in the embodiments of this application;

[0017] Figure 4 A structural diagram of the bottom rail connector provided in an embodiment of this application at one angle;

[0018] Figure 5 This is a schematic diagram of the bottom structure of the bottom support rail connector provided in an embodiment of this application.

[0019] In the attached diagram: 100 - Connecting main board; 110 - Mounting cavity; 111 - First assembly slot; 112 - Second assembly slot; 113 - Third assembly slot; 200 - Handle seat; 210 - Rack part; 220 - Handle part; 230 - Connecting seat; 231 - Limiting groove; 240 - Protrusion; 250 - Elastic element; 300 - Height adjustment mechanism; 310 - Adjusting plate; 320 - Torsion rod; 330 - Limiting hole; 340 - Adjusting tooth; 350 - Raised rack; 400 - Left and right adjustment mechanism; 410 - Adjusting nut; 420 - Threaded rod; 430 - Adjusting block; 431 - Protrusion; 500 - Front and rear adjustment mechanism; 510 - Eccentric gear; 520 - Connecting plate; 530 - Adjusting shaft; 610 - Fixed rail; 620 - Sliding rail; 621 - Rack seat. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] The following is combined Figures 1 to 5 The embodiments of this utility model are described below.

[0024] This application provides a bottom rail connector, which includes a connecting main board 100 and a handle base 200. The connecting main board 100 has a mounting cavity 110 and a protrusion 431 protruding outward along the connecting main board 100. The protrusion 431 is used to connect with the hole of the sliding rail 620. The connecting main board 100 is also provided with mounting holes for fixing with the drawer.

[0025] The handle seat 200 is movably connected in the mounting cavity 110. The handle seat 200 has an inclined rack portion 210 at one end near the protrusion 431 and a handle portion 220 at the other end. When the handle portion 220 is twisted, it drives the rack portion 210 to retract. When the handle portion 220 is released, it drives the rack portion 210 to extend and reset, so as to engage with the rack seat 621 of the slide rail 620 during actual assembly.

[0026] Rotating the handle 220 moves the rack 210 at the other end, causing it to engage with the rack seat 621 on the slide rail 620. During actual assembly, turning the handle 220 retracts the rack 210; after alignment, releasing the handle 220 allows the rack 210 to engage with the rack seat 621 on the slide rail 620, thus fixing the connector to the slide rail 620. To separate, turning the handle 220 separates the rack 210 from the rack seat 621. In this way, the connection and separation of the bottom rail connector and the slide rail 620 can be completed simply by turning the handle 200, without the need for other connecting tools, significantly improving installation efficiency. Furthermore, the rack-and-pinion connection ensures a higher fit between the connector and the slide rail 620, resulting in better connection precision.

[0027] In some embodiments, a connecting seat 230 is slidably connected to the connecting main board 100. The rack portion 210 is disposed on the connecting seat 230, and the connecting seat 230 is provided with a limiting groove 231. A protrusion 240 is provided on one side of the handle seat 200, and an elastic element 250 is provided on the other side. The elastic element 250 is used to provide a preload force, thereby enabling the rack portion 210 to reset. The protrusion 240 cooperates with the limiting groove 231, and the elastic element 250 abuts against the inner sidewall of the connecting main board 100. When the handle seat 200 is rotated, the elastic element 250 undergoes elastic deformation, so that after the handle portion 220 is released, the elastic element 250 has a tendency to reset to achieve the reset of the rack portion 210, ensuring that the rack portion 210 can stably separate from the rack seat 621 in the unlocked state.

[0028] In some embodiments, the connecting main board 100 is further provided with a height adjustment mechanism 300, a left-right adjustment mechanism 400, and a front-back adjustment mechanism 500. All three mechanisms are located within the mounting cavity 110. The left-right adjustment mechanism 400 is located on the side away from the handle seat 200, the height adjustment mechanism 300 is located adjacent to the left-right adjustment mechanism 400, and the front-back adjustment mechanism 500 is located on the side close to the left-right adjustment mechanism 400. Optionally, the bottom rail connector is generally L-shaped, allowing for a closer fit with the outer edge of the sliding rail 620 or the drawer, resulting in a more compact assembly and reducing the space occupied at the bottom of the drawer.

[0029] During assembly, first twist the handle seat 200 and connect it to the slide rail 620 through the protrusion 431 and rack part 210. Then, fine-tune the position in three directions through each adjustment mechanism to complete the assembly adjustment. During subsequent maintenance, the corresponding adjustment mechanism can be operated individually for position calibration without disassembling the entire connector. In this way, the connector can be independently adjusted in three directions: left and right, high and low, and front and back. All adjustment mechanisms are integrated inside the main board 100. The entire connector has adjustment capabilities, and the overall structure remains compact, without occupying too much bottom space. This facilitates more precise calibration in confined spaces, ensuring smooth operation and opening of the slide rail 620, while also ensuring proper alignment with the cabinet position.

[0030] Therefore, during actual assembly, the front and back, left and right, and height of the drawer can be adjusted independently. The reasonable layout of the position avoids interference between the adjustment mechanisms. The structure is compact, occupies little space at the bottom, and can adapt to narrow installation spaces. It can be compatible with 620 sliding rails of different sizes and installation positions, which greatly enhances the flexibility and adaptability of installation and use.

[0031] In some embodiments, the left and right adjustment mechanism 400 includes an adjusting nut 410, a threaded rod 420, and an adjusting block 430. A protrusion 431 is provided on the adjusting block 430 and is used to connect with the sliding rail 620. The other end of the adjusting block 430 is fixedly connected to one end of the threaded rod 420, and the other end of the threaded rod 420 is threadedly connected to the adjusting nut 410. The connecting main plate 100 is provided with a first mounting groove 111, and the adjusting nut 410 corresponds to the first mounting groove 111.

[0032] When the adjusting nut 410 is rotated, the threaded rod 420 will be driven to rotate in or out. Since the threaded rod 420 is fixed to the adjusting block 430, it will drive the adjusting block 430 and the protrusion 431 on it to move left and right. That is, by turning the adjusting nut 410, the protrusion 431 will be driven to move left and right. In actual assembly, the protrusion 431 is inserted into the hole of the sliding rail 620. By turning the adjusting nut 410, the left and right relative positions of the connecting parts and the sliding rail 620 can be finely adjusted. This can effectively compensate for the misalignment of the cabinet or rail during installation, ensure that the left and right gaps between the drawer or door panel and the cabinet opening are uniform, and reduce the running jamming or appearance defects caused by uneven gaps.

[0033] In some embodiments, the height adjustment mechanism 300 includes an adjustment plate 310 and a torsion bar 320. The connecting main plate 100 is provided with a second mounting groove 112 on the side near the first mounting groove 111. The torsion bar 320 is rotatably connected to the second mounting groove 112. One end of the adjustment plate 310 is fixedly connected to the torsion bar 320, and the bottom of the other end is inclined and extends outward along the mounting cavity 110.

[0034] After actual assembly, rotating the torsion rod 320 will synchronously drive the adjusting plate 310, which is fixedly connected to it, to rotate synchronously. Since the bottom edge of the adjusting plate 310 facing the slide rail 620 is an inclined surface, as the adjusting plate 310 rotates, the bottom inclined surface gradually approaches the edge of the slide rail 620. When the adjusting plate 310 rotates until the bottom inclined surface contacts the edge of the slide rail 620, continuing to rotate the torsion rod 320 will cause the adjusting plate 310 to slide inwards along the edge of the slide rail 620, thereby lifting or lowering the drawer mounted on the slide rail 620, thus adjusting the drawer's height. Through this adjustment method, the vertical gap between the drawer and the cabinet opening can be kept uniform. If vertical misalignment or displacement occurs, it can be quickly corrected by rotating the torsion rod 320, ultimately achieving a fine-tuning function for the drawer's height. This effectively ensures the consistency of the vertical gap between the drawer and the cabinet opening, avoiding friction interference or positional misalignment caused by uneven gaps.

[0035] Furthermore, a limiting hole 330 is formed on one side of the second assembly groove 112, and an adjusting tooth 340 is provided on the side of the mounting cavity 110 near the limiting hole 330. A corresponding convex rack 350 is provided on the outer wall of the torsion rod 320. The convex rack 350 extends outward along the limiting hole 330 and meshes with the adjusting tooth 340. This prevents the adjusting piece 310 from shifting under vibration after the torsion rod is adjusted, ensuring the stability of the adjustment result.

[0036] In some embodiments, the front-to-back adjustment mechanism 500 includes an eccentric gear 510, a connecting plate 520, and an adjusting shaft 530. The connecting main plate 100 has a third mounting groove 113 on its side near the handle seat 200. The connecting plate 520 is slidably mounted on the connecting main plate 100. The eccentric gear 510 is rotatably connected to the third mounting groove 113. The adjusting shaft 530 passes through and is fixed to the eccentric gear 510, and its end is fixedly connected to the connecting plate 520 so that the adjusting shaft 530 drives the connecting plate 520 to move back and forth when rotated. When the adjusting shaft 530 is rotated, it drives the eccentric gear 510 to rotate, thereby driving the connecting plate 520 to move back and forth. In other words, by turning the adjusting shaft 530, the connecting plate 520 can be moved back and forth, thereby adjusting the relative front-to-back position of the connecting piece and the sliding rail 620, ensuring the front-to-back alignment of the drawer and cabinet opening, and smooth operation.

[0037] This application also provides a bottom support rail, which includes a fixed rail 610, a sliding rail 620, and a bottom support rail connector as disclosed in any of the above embodiments. The fixed rail 610 is slidably connected to the sliding rail 620. The sliding rail 620 is provided with a connecting hole and a rack seat 621. After the protrusion 431 is inserted into the connecting hole on the sliding rail 620, the handle seat 200 can be turned to engage the rack seat 621 with the rack portion 210, thereby connecting the bottom support rail connector and the sliding rail 620. Since this bottom support rail uses the bottom support rail connector disclosed in the embodiments of this application, this bottom support rail also has the technical advantages of the bottom support rail connector disclosed in the embodiments of this application, which will not be described in detail in the embodiments of this application.

[0038] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

Claims

1. A bottom rail connector, characterized in that: include A connecting motherboard (100) has a mounting cavity (110) and a protrusion (431) protruding outward along the connecting motherboard (100), the protrusion (431) being used to connect with the hole of the sliding rail (620); A handle seat (200) is rotatably connected in the mounting cavity (110). The handle seat (200) has an inclined rack portion (210) at one end near the protrusion (431) and a handle portion (220) at the other end. When the handle portion (220) is twisted, the rack portion (210) is retracted to engage with the rack seat (621) of the slide rail (620).

2. The bottom rail connector according to claim 1, characterized in that: A connecting seat (230) is slidably connected to the connecting main board (100). The rack portion (210) is disposed on the connecting seat (230). The connecting seat (230) is provided with a limiting groove (231). A protrusion (240) is provided on one side of the handle seat (200), and an elastic element (250) is provided on the other side. The protrusion (240) cooperates with the limiting groove (231), and the elastic element (250) abuts against the inner wall of the connecting main board (100).

3. The bottom rail connector according to claim 1, characterized in that: The connecting motherboard (100) is also provided with a height adjustment mechanism (300), a left and right adjustment mechanism (400), and a front and back adjustment mechanism (500). The height adjustment mechanism (300), the left and right adjustment mechanism (400), and the front and back adjustment mechanism (500) are all located in the mounting cavity (110). The left and right adjustment mechanism (400) is located on the side away from the handle seat (200). The height adjustment mechanism (300) is located adjacent to the left and right adjustment mechanism (400). The front and back adjustment mechanism (500) is located on the side close to the left and right adjustment mechanism (400).

4. The bottom rail connector according to claim 3, characterized in that: The left and right adjustment mechanism (400) includes an adjusting nut (410), a threaded rod (420), and an adjusting block (430). The protrusion (431) is provided on the adjusting block (430) and is used to connect with the sliding rail (620). The other end of the adjusting block (430) is fixedly connected to one end of the threaded rod (420), and the other end of the threaded rod (420) is threadedly connected to the adjusting nut (410). The connecting main plate (100) is provided with a first mounting groove (111), and the adjusting nut (410) corresponds to the first mounting groove (111).

5. The bottom rail connector according to claim 4, characterized in that: The height adjustment mechanism (300) includes an adjustment plate (310) and a torsion bar (320). The connecting main board (100) has a second assembly groove (112) on the side near the first assembly groove (111). The torsion bar (320) is rotatably connected to the second assembly groove (112). One end of the adjustment plate (310) is fixedly connected to the torsion bar (320), and the bottom of the other end is inclined and extends outward along the mounting cavity (110).

6. The bottom rail connector according to claim 5, characterized in that: A limiting hole (330) is opened on one side of the second assembly groove (112). An adjusting tooth (340) is provided on the side of the mounting cavity (110) near the limiting hole (330). A convex rack (350) is provided on the outer wall of the torsion rod (320). The convex rack (350) extends outward along the limiting hole (330) and meshes with the adjusting tooth (340).

7. The bottom rail connector according to claim 6, characterized in that: The front and rear adjustment mechanism (500) includes an eccentric gear (510), a connecting plate (520), and an adjustment shaft (530). The connecting main plate (100) has a third mounting groove (113) on the side near the handle seat (200). The connecting plate (520) is slidably disposed on the connecting main plate (100). The eccentric gear (510) is rotatably connected to the third mounting groove (113). The adjustment shaft (530) passes through and is fixed to the eccentric gear (510). The end of the adjustment shaft (530) is fixedly connected to the connecting plate (520) so that when the adjustment shaft (530) rotates, it drives the connecting plate (520) to move back and forth.

8. A bottom support rail, characterized in that: The system includes a fixed rail (610), a sliding rail (620), and a bottom support rail connector as described in any one of claims 1-7, wherein the fixed rail (610) and the sliding rail (620) are slidably connected. The sliding rail (620) is provided with a connecting hole and a rack seat (621). The protrusion (431) is connected to the connecting hole, and the rack seat (621) is engaged with the rack part (210).

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