Groove type three-section rail
Through the innovative design of the inner and outer groove shells, combined with the support plate and rolling elements, the problems of loosening of the three-section rail and complex processing were solved, thereby improving durability and cost.
Patent Information
- Application Number
- CN202520517098.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing three-section rails are prone to loosening during use, causing drawer displacement and poor sliding, and they also require high processing precision and are costly.
The design employs an inner and outer groove shell. The inner groove shell includes an inner groove bottom plate and an inner groove side plate. The ends of the inner groove side plates are bent inward to form an inner groove folded plate. The outer groove side plate is slidably connected to the inner groove side plate. Combined with a support plate and rolling elements, this avoids high-precision drilling and riveting processes.
It improves the durability and overall strength of the three-section rail, reduces manufacturing costs, avoids rivet loosening problems, and enhances structural stability.
Smart Images
Figure CN223913736U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the drawer slide rail field, concretely relates to a groove type three section rail. BACKGROUND
[0002] At present, the drawer slide rail is usually three section type structure, so it is also called three section rail, that is, the drawer slide rail includes inner rail, middle rail and outer rail, the outer rail is used for being installed on the inner wall of the cabinet body, the inner rail is used for being installed on the side plate of the drawer, and the inner rail and the outer rail are slidably connected with the middle rail respectively. Figure 5 As shown in the figure, the existing three section rail, the middle rail thereof includes two groove strips 99 arranged oppositely, the bottoms of the two groove strips 99 are abutted together and connected through rivets 98, the inner rail and the outer rail have the same structure, the inner rail and the outer rail are arranged oppositely, the side plate of the inner rail and the side plate of the corresponding groove strip 99 are provided with a steel ball, and the side plate of the outer rail and the side plate of the corresponding groove strip 99 are provided with a steel ball, so that the outer rail and the inner rail can slide on the middle rail independently, but since there is a gap between the rivet 98 and the hole position of the groove strip 99, and the gravity of the drawer makes the two groove strips 99 have a relative up-down displacement trend, after the three section rail is used for a period of time, the two groove strips 99 are prone to relative loosening, which causes the problems of drawer displacement and poor sliding, that is, the durability is not good, and the machining position precision requirement of the hole position of the groove strip 99 for installing the rivet 98 is high, and the riveting assembly process of the two groove strips 99 is also relatively complex, which is not conducive to reducing the cost, so the above three section rail needs to be improved. SUMMARY
[0003] The utility model aims at overcoming the prior art's insufficient, provide a groove type three section rail, its durability is better, and cost is lower.
[0004] The utility model discloses a purpose is realized through the following technical scheme.
[0005] The utility model discloses a groove type three section rail, including outer groove shell and inner groove shell, the inner groove shell is located between left and right two oppositely arranged outer groove shell, wherein, the outer groove shell forms the outer groove side plate, the inner groove shell includes inner groove bottom plate, the upper and lower ends of the inner groove bottom plate are respectively bent to the same side and form the inner groove side plate, the end of the inner groove side plate that is opposite from the inner groove bottom plate is bent to form the groove mouth inner folding plate, and the outer groove side plate of left and right two outer groove shells is slidably connected to the outside of the same inner groove side plate.
[0006] Preferably, the inner groove bottom plate is fixedly connected with a support plate, and the support plate is adaptively arranged between the upper and lower groove mouth inner folding plates.
[0007] Preferably, the end of the groove mouth inner folding plate forms a folding edge for abutting and connecting the support plate.
[0008] Preferably, a through groove is formed on the inner groove bottom plate, and one end of the support plate is integrally connected with the edge portion of the through groove.
[0009] Preferably, the inner groove bottom plate is formed with an inner recess.
[0010] Compared with the prior art, the utility model has the advantages that the structure mainly comprises a groove type three-section rail formed by an outer groove shell and an inner groove shell, the inner groove shell comprises an inner groove bottom plate, the upper and lower ends of the inner groove bottom plate are respectively bent to the same side to form inner groove side plates, and the ends of the inner groove side plates away from the inner groove bottom plate are bent inward to form groove inner folding plates, the outer groove side plates of the left and right outer groove shells are slidably connected to the outer sides of the same inner groove side plate, which is beneficial to improving the durability and overall strength stability of the three-section rail, and is also beneficial to reducing the manufacturing cost of the three-section rail. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a perspective structural schematic view of the three-section rail in the unfolded state of the utility model.
[0012] Figure 2 It is a front view structural schematic view of the three-section rail of the utility model.
[0013] Figure 3 It is a perspective structural schematic view of the inner groove shell of the utility model.
[0014] Figure 4 It is a front view structural schematic view of the outer groove shell of the utility model.
[0015] Figure 5 It is a front view structural schematic view of the three-section rail of the prior art.
[0016] Label explanation: outer groove shell 1; outer groove bottom plate 11; outer groove side plate 12; inner side groove 1201; inner groove shell 2; inner groove bottom plate 21; inner recess 211; through groove 2111; inner groove side plate 22; outer side groove 221; groove inner folding plate 23; folded edge 231; support plate 24; rolling body 4; groove strip 99; rivet 98. DETAILED DESCRIPTION
[0017] The utility model will be further described below in combination with the drawings.
[0018] The utility model discloses a groove type three-section rail, as shown in Figure 1 And Figure 2 As shown in, including outer groove shell 1 and inner groove shell 2, as shown in Figure 2 Inner groove shell 2 is arranged between the left and right two oppositely arranged outer groove shells 1, and under the visual of Figure 2 The left and right two outer groove shells 1 surround the inner groove shell 2. Figure 4As shown, the outer casing 1 has outer casing side plates 12. Specifically, the outer casing 1 also has an outer casing bottom plate 11. Each outer casing 1 includes two outer casing side plates 12, one above the other. The outer casing bottom plate 11 is vertically arranged, and the outer casing side plates 12 are horizontally arranged. The upper and lower ends of the outer casing bottom plate 11 are integrally connected to the corresponding outer casing side plates 12. Figure 2 As shown, the inner tank shell 2 includes an inner tank bottom plate 21. The upper and lower ends of the inner tank bottom plate 21 are bent to the same side to form inner tank side plates 22. For example, the upper and lower inner tank side plates 22 are located on the right side of the inner tank bottom plate 21. The inner tank side plates 22 are horizontally positioned. The end of the inner tank side plate 22 that is relatively far from the inner tank bottom plate 21 is bent inward to form an inner groove folding plate 23. That is, the right end of the inner tank side plate 22 located at the upper position is bent downward to form the corresponding inner groove folding plate 23, and the right end of the inner tank side plate 22 located at the lower position is bent upward to form the corresponding inner groove folding plate 23. The inner groove folding plate 23 is perpendicular to the inner tank side plate 22. Figure 2 As shown, the outer side plates 12 of the left and right outer shells 1 are slidably connected to the outer side of the same inner side plate 22. That is, the outer side plates 12 of the left and right outer shells 1 located at the upper position are slidably connected to the upper side of the same inner side plate 22 (located at the upper position), while the outer side plates 12 of the left and right outer shells 1 located at the lower position are slidably connected to the lower side of the same inner side plate 22 (located at the lower position). Figure 2 As shown, a rolling element 4 is provided between the outer groove side plate 12 and the corresponding inner groove side plate 22. Specifically, the rolling element 4 can be a steel ball, such as... Figure 4 As shown, the outer groove side plate 12 has an inner groove 1201, such as Figure 2 and Figure 3 As shown, two outer grooves 221 are formed on the inner groove side plate 22. A corresponding rolling element 4 is provided between the outer groove 221 located on the left and the inner groove 1201 of the outer groove shell 1 located on the left. Similarly, a corresponding rolling element 4 is provided between the outer groove 221 located on the right and the inner groove 1201 of the outer groove shell 1 located on the right. Therefore, the two outer groove shells 1 can slide independently relative to the inner groove shell 2. Figure 1 As shown, for example, the outer slot shell 1 located on the left can be installed on the inner wall of the cabinet, while the outer slot shell 1 located on the right can be installed on the left outer wall of the drawer. Thus, the inner slot shell 2 is equivalent to the "middle rail" of the three-section drawer. When the drawer is pulled out, the inner slot shell 2 is subjected to a large bending moment (the plane of action of this bending moment is the plane formed by the front-back direction and the up-down direction). By setting the inner folding plate 23 in the slot, the structural rigidity of the inner slot shell 2 can be increased, making the inner slot shell 2 more resistant to the above bending moment.
[0019] like Figure 2As shown, since the outer groove side plates 12 of the left and right outer groove shells 1 are correspondingly slidably connected to the outer side of the same inner groove side plate 22, it is equivalent to integrally combine the two groove strips 99 of the prior art, thereby avoiding the need for high-precision drilling process and complicated riveting process, thus being conducive to reducing costs, and avoiding the problem that the rivets 98 are prone to loosening, thus being conducive to improving the durability of the three-piece rail of the utility model.
[0020] Further, as shown in Figure 3 , the inner groove bottom plate 21 is fixedly connected with a support plate 24, as shown in Figure 2 and Figure 3 , the support plate 24 is adapted to be arranged between the upper and lower groove notch inner flaps 23, that is, the upper end of the support plate 24 abuts against the lower end of the upper groove notch inner flap 23, and the lower end of the support plate 24 abuts against the upper end of the lower groove notch inner flap 23, so that when the gravity of the drawer is applied to the right outer groove shell 1, the right end of the upper inner groove side plate 22 supports the gravity of the drawer, because the support plate 24 can support the upper groove notch inner flap 23, it can avoid the downward movement of the upper groove notch inner flap 23, thereby avoiding the bending deformation of the upper inner groove side plate 22, the support plate 24 can be welded or connected by fasteners with the inner groove bottom plate 21, the support plate 24 also blocks the upward movement of the lower groove notch inner flap 23, thereby being conducive to stabilizing the shape of the inner groove shell 2 and increasing the structural strength of the three-piece rail, further being conducive to improving the durability of the three-piece rail. As shown in Figure 3 , the support plate 24 can be arranged at intervals along the extension direction of the inner groove shell 2, which is conducive to supporting the groove of the inner groove shell 2 (the groove of the inner groove shell 2 is located between the upper and lower groove notch inner flaps 23) in a large range. By providing the support plate 24, the wall thickness of the inner groove shell 2 can be reduced, and the inner groove shell 2 can also have sufficient structural rigidity.
[0021] Further, as shown in Figure 2 , the end of the groove notch inner flap 23 is formed with a folded edge 231 for abutting and connecting the support plate 24, the folded edge 231 can be bent inward (i.e. toward the inner groove bottom plate 21 side), the folded edge 231 and the corresponding groove notch inner flap 23 form an obtuse angle of about 120° to 150°, by providing the folded edge 231, the edge portion of the groove notch inner flap 23 relatively close to the support plate 24 is formed as a three-dimensional structure, which is conducive to increasing the structural rigidity of the end of the groove notch inner flap 23 relatively close to the support plate 24, and can increase the torsional strength of the inner groove shell 2.
[0022] Further, as shown in Figure 3As shown in the figure, the inner groove bottom plate 21 is formed with a through groove 2111, and one end of the support plate 24 is integrally connected with the edge portion of the through groove 2111. Therefore, in the process of manufacturing the inner groove shell 2, the three edges of the through groove 2111 are first cut by laser, and then the plate body within the range of the through groove 2111 is bent inward by 90° by using a bending process, so as to form the support plate 24. The above manufacturing process is relatively simple and fast, and can avoid the deformation of the inner groove shell 2 caused by welding the support plate 24. Figure 2 As shown in the figure, the left end of the support plate 24 is integrally connected with the inner groove bottom plate 21, and the right end of the support plate 24 is located between the upper and lower groove opening inner flaps 23.
[0023] Further, as shown in the figures, Figure 2 and Figure 3 As shown in the figure, the inner groove bottom plate 21 is formed with an inner recess 211, and the inner recess 211 traverses the inner groove shell 2 along the extension direction of the inner groove shell 2, so that the inner groove bottom plate 21 forms a three-dimensional structure, which is beneficial to increase the structural rigidity of the inner groove bottom plate 21.
Claims
1. A three-piece groove rail comprising an outer groove shell (1) and an inner groove shell (2), the inner groove shell (2) being arranged between the two oppositely arranged outer groove shells (1), characterized in that: The outer shell (1) is formed with an outer shell side plate (12), the inner shell (2) comprises an inner shell bottom plate (21), upper and lower ends of the inner shell bottom plate (21) are respectively bent to the same side to form an inner shell side plate (22), an end of the inner shell side plate (22) away from the inner shell bottom plate (21) is bent inward to form a notch inner bent plate (23), and outer shell side plates (12) of left and right outer shells (1) are correspondingly and slidably connected to the outer side of the same inner shell side plate (22).
2. The channelled three-piece rail according to claim 1, characterized in that: The inner shell bottom plate (21) is fixedly connected with a support plate (24), and the support plate (24) is arranged between the two notch inner bent plates (23).
3. The channelled three-piece rail according to claim 2, characterized in that: An edge (231) for abutting and connecting the support plate (24) is formed at an end of the notch inner bent plate (23).
4. The channelled three-piece rail according to claim 2 or 3, characterised in that: A through groove (2111) is formed on the inner shell bottom plate (21), and one end of the support plate (24) is integrally connected with an edge portion of the through groove (2111).
5. The channelled three-piece rail according to any one of claims 1 to 3, wherein: The inner shell bottom plate (21) is formed with an inner recess (211).