A new gear assembly for slide rail and slide rail assembly

Abstract

The utility model discloses a novel gear assembly and slide rail assembly for slide rail, this novel gear assembly is configured on the middle rail and includes pinion, pinion and gear cover, this pinion is used for with the rack on the upper rail interlock transmission, this pinion is used for with the rack under the lower rail interlock transmission, the convex axle is equipped on this pinion, and the pinion cover is equipped on the convex axle to realize transmission cooperation, this gear cover is used for installing on the middle rail, and pinion and pinion are all placed in the gear cover and pinion and gear cover rotation cooperation, wherein, between this pinion and the rack, between this pinion and the rack all have reset gap, thereby, through setting reset gap, when the slide rail falls or appears improper installation in transportation, the pinion and pinion all have displacement space, avoid the direct hard impact of gear and rack and lead to the gear fracture, and then improve the service life of product.

Description

Technical Field

[0001] This utility model relates to the field of slide rail technology, specifically to a novel gear assembly and slide rail assembly for slide rails. Background Technology

[0002] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0003] Currently, the method of pushing and pulling objects using slide rail assemblies is very common. For example, drawers are opened or closed by pushing and pulling them using slide rail assemblies. These slide rail assemblies typically include an upper rail, a middle rail, and a lower rail. The upper and lower rails are respectively equipped with an upper rack and a lower rack, while the middle rail is equipped with a rotatable gear that meshes with both the upper and lower racks. Thus, when the upper rail slides along the middle rail, the meshing of the rack and gear allows the middle rail to slide along the lower rail.

[0004] However, when the above-mentioned gear and rack structure is used, since the gears directly mesh with the upper and lower racks, there is no reserved reset gap between the gears and racks. When the slide rail falls during transportation or is improperly installed, the force generated can easily cause the gear teeth to break, thereby reducing the service life. Utility Model Content

[0005] To overcome the defects described in the prior art, this utility model provides a novel gear assembly and slide rail assembly for slide rails. By setting a large gear and a small gear to mesh with the upper rack and lower rack respectively, and resetting gaps are reserved between the large gear and the lower rack, and between the small gear and the upper rack, when the slide rail is dropped during transportation or improperly installed, the large gear and the small gear have displacement space, avoiding direct hard impact between the gear and the rack that could cause gear breakage, thereby improving the service life of the product.

[0006] The technical solution adopted by this utility model to solve its problem is: A novel gear assembly for a slide rail, configured on a center rail, includes: The large gear is used to mesh with the rack on the upper rail for transmission; The pinion is used to mesh with the rack on the lower rail for transmission; the pinion is provided with a convex shaft, and the large gear is sleeved on the convex shaft to achieve transmission engagement; A gear sleeve is used to install on the middle rail; both the large gear and the small gear are placed inside the gear sleeve and the small gear is rotatably engaged with the gear sleeve. There are reset gaps between the large gear and the lower rack, and between the small gear and the upper rack.

[0007] As an optional implementation, the gear sleeve is provided with a hook for hooking the lower rack so that the lower rack meshes with the pinion.

[0008] As an optional implementation, the convex shaft is provided with a gear ring, and the large gear is provided with a sleeve hole adapted to the gear ring. The large gear is sleeved on the gear ring through the sleeve hole to realize the transmission connection.

[0009] As an optional implementation, a shaft hole is provided on the inner wall of the gear sleeve, and one end of the convex shaft is inserted into the shaft hole to form a rotational fit.

[0010] As an optional implementation, the inner wall of the gear sleeve is provided with a protruding post, and the pinion is provided with a concave hole into which the protruding post can be inserted to form a rotational fit.

[0011] In addition, this utility model also provides a slide rail assembly, including an upper rail, a middle rail, a lower rail, and the aforementioned novel gear assembly, wherein: The gear sleeve passes through the middle rail; The upper rail is slidably mounted on the middle rail; an upper rack is installed inside the upper rail, and the upper rack meshes with the large gear for transmission. The middle rail is slidably mounted on the lower rail; the lower rail is provided with a lower rack, and the pinion meshes with the lower rack for transmission.

[0012] As an optional implementation, the gear sleeve and the middle rail are fixed by a snap-fit ​​structure. The snap-fit ​​structure includes a snap hole and a buckle that snaps into the snap hole. One of the snap hole and the buckle is located on the middle rail, and the other is located on the gear sleeve.

[0013] As an optional implementation, it also includes a first wheel frame assembly disposed on the middle rail. The first wheel frame assembly includes a first wheel frame and a plurality of first rollers that are rolled on the first wheel frame. The inner wall of the upper rail rolls against the plurality of first rollers to achieve sliding on the middle rail.

[0014] As an optional implementation, it also includes a second wheel frame assembly disposed on the lower rail. The second wheel frame assembly includes a second wheel frame and a plurality of second rollers that are rolled on the second wheel frame. The inner wall of the middle rail rolls against the plurality of second rollers to achieve sliding on the lower rail.

[0015] As an optional implementation, the lower rack is integrally formed on the second wheel frame.

[0016] In summary, the novel gear assembly and slide rail assembly for slide rails provided by this utility model have the following beneficial effects: (1) By setting the large gear and the small gear to mesh with the upper rack and the lower rack respectively, when the upper rail is pushed to slide, the upper rack drives the large gear to rotate, the large gear transmits to the small gear, and the small gear slides on the lower rack, thereby realizing the synchronous sliding of the upper rail and the middle rail; in addition, by reserving the reset gap between the large gear and the lower rack and between the small gear and the upper rack, when the slide rail falls during transportation or is improperly installed, the large gear and the small gear have displacement space, avoiding the gear from being directly impacted by the rack and causing the gear to break, thereby improving the service life of the product.

[0017] (2) By setting a hook on the gear sleeve to support the lower rack, misalignment between the lower rack and the pinion is avoided, ensuring that the pinion and the lower rack are always in mesh, thereby ensuring the normal sliding of the slide rail and improving its reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the slide rail assembly of this utility model; Figure 2 This is an exploded view of the slide rail assembly of this utility model; Figure 3 This is an exploded view of the novel gear assembly in the slide rail assembly of this utility model; Figure 4 for Figure 3 An illustration of the explosion from another perspective; Figure 5 This is a partial structural schematic diagram of the slide rail assembly of this utility model; Figure 6 for Figure 5 A structural diagram of the gear sleeve is hidden; Figure 7 This is a cross-sectional schematic diagram of the slide rail assembly of this utility model.

[0019] The meanings of the reference numerals in the attached figures are as follows: 1. Upper rail; 2. Middle rail; 21. Mounting hole; 22. Snap hole; 3. Lower rail; 4. New type of gear assembly; 41. Large gear; 411. Sleeve hole; 42. Small gear; 421. Convex shaft; 422. Gear ring; 423. Concave hole; 43. Gear sleeve; 431. Hook; 432. Shaft hole; 433. Convex post; 434. Snap fastener; 5. Upper rack; 6. First wheel frame assembly; 61. First wheel frame; 62. First roller; 7. Second wheel frame assembly; 71. Second wheel frame; 711. Lower rack; 72. Second roller. Detailed Implementation

[0020] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] See Figure 1-7 This utility model first provides a novel gear assembly 4 for a slide rail. The novel gear assembly 4 is configured on the middle rail 2 and includes a large gear 41, a small gear 42, and a gear sleeve 43. The large gear 41 is used to mesh with the upper rack 5 in the upper rail 1 for transmission; the small gear 42 is used to mesh with the lower rack 711 on the lower rail 3 for transmission; wherein, the small gear 42 is provided with a convex shaft 421, and the large gear 41 is sleeved on the convex shaft 421 to realize the transmission cooperation between the two; the gear sleeve 43 is used to pass through the middle rail 2, and both the large gear 41 and the small gear 42 are placed in the gear sleeve 43, and the small gear 42 and the gear sleeve 43 are rotatably engaged.

[0024] Thus, by setting the large gear 41 and the small gear 42 to mesh with the upper rack 5 and the lower rack 711 respectively, when the upper rail 1 is pushed to slide, the upper rack 5 drives the large gear 41 to rotate, the large gear 41 transmits the power to the small gear 42, and the small gear 42 slides on the lower rack 711, thereby achieving synchronous sliding between the upper rail 1 and the middle rail 2.

[0025] Specifically, there are reset gaps between the large gear 41 and the lower rack 711, and between the small gear 42 and the upper rack 5; more specifically, there is a reset gap h1 between the large gear 41 and the lower rack 711, and a reset gap h2 between the small gear 42 and the upper rack 5. Figure 7As shown. Therefore, by reserving a reset gap between the large gear 41 and the lower rack 711, and between the small gear 42 and the upper rack 5, when the slide rail falls during transportation or is improperly installed, both the large gear 41 and the small gear 42 have displacement space, avoiding direct hard impact between the gears and the rack that could cause gear breakage, thereby improving the service life of the product.

[0026] Furthermore, the gear sleeve 43 is provided with a hook 431, which is used to hook the lower rack 711 so that the lower rack 711 meshes with the pinion 42. In this way, by providing a hook 431 on the gear sleeve 43 to support the lower rack 711, misalignment between the lower rack 711 and the pinion 42 is avoided, ensuring that the pinion 42 and the lower rack 711 are always in a meshed state, thereby ensuring the normal sliding of the slide rail and improving its reliability.

[0027] See Figure 3-4 Preferably, the convex shaft 421 is provided with a gear ring 422, and the large gear 41 is provided with a sleeve hole 411 that is adapted to the gear ring 422. The large gear 41 is sleeved on the gear ring 422 through the sleeve hole 411 to realize the transmission connection.

[0028] Furthermore, a shaft hole 432 is provided on one inner sidewall of the gear sleeve 43, and one end of the convex shaft 421 of the pinion 42 is inserted into the shaft hole 432 to form a rotational engagement. Additionally, a protruding post 433 is provided on the other inner sidewall of the gear sleeve 43, and a concave hole 423 is provided on the pinion 42 for the protruding post 433 to be inserted into and form a rotational engagement. Thus, through the rotational engagement between the shaft hole 432 and the convex shaft 421, and between the protruding post 433 and the concave hole 423, the pinion 42 can be rotatably mounted within the gear sleeve 43.

[0029] See also Figure 1-7 This utility model also provides a slide rail assembly, including an upper rail 1, a middle rail 2, a lower rail 3, and the aforementioned novel gear assembly 4, wherein the gear sleeve 43 is mounted on the middle rail 2; the upper rail 1 is slidably mounted on the middle rail 2; an upper rack 5 is installed inside the upper rail 1, and the upper rack 5 meshes with a large gear 41 for transmission; the middle rail 2 is slidably mounted on the lower rail 3; a lower rack 711 is provided on the lower rail 3, and a small gear 42 meshes with the lower rack 711 for transmission.

[0030] In this embodiment, the middle rail 2 is provided with a mounting hole 21 through which the gear sleeve 43 can pass.

[0031] Preferably, the gear sleeve 43 is fixed to the middle rail 2 by a snap-fit ​​structure. The snap-fit ​​structure includes snap holes 22 on the middle rail 2 located on both sides of the mounting hole 21 and snap buckles 434 on both sides of the gear sleeve 43. By inserting the gear sleeve 43 into the mounting hole 21 until the two snap buckles 434 are engaged with the snap holes 22 respectively, the gear sleeve 43 can be fixed to the middle rail 2.

[0032] Of course, in other embodiments, the positions of the card hole 22 and the buckle 434 can be interchanged to achieve the same technical effect, and this is not a limitation.

[0033] Furthermore, it also includes a first wheel frame assembly 6 disposed on the middle rail 2. The first wheel frame assembly 6 includes a first wheel frame 61 and a plurality of first rollers 62 that are rolled on the first wheel frame 61. The inner wall of the upper rail 1 rolls against the plurality of first rollers 62 to achieve sliding on the middle rail 2.

[0034] It should be noted that several first rollers 62 are distributed on the top and left and right sides of the first roller frame 61 to ensure that the upper rail 1 can slide stably and smoothly on the middle rail 2.

[0035] In addition, it also includes a second wheel frame assembly 7 disposed on the lower rail 3. The second wheel frame assembly 7 includes a second wheel frame 71 and a plurality of second rollers 72 that are rolled on the second wheel frame 71. The inner wall of the middle rail 2 rolls against the plurality of second rollers 72 to achieve sliding on the lower rail 3.

[0036] It should be noted that several second rollers 72 are distributed on the top, left and right sides and bottom of the second roller frame 71 to ensure that the middle rail 2 can slide stably and smoothly on the lower rail 3.

[0037] Preferably, the lower rack 711 is integrally formed on the second wheel frame 71, thereby making the product structure more compact and the integration higher.

[0038] In summary, the novel gear assembly 4 and slide rail assembly for slide rails provided by this utility model have the following beneficial effects: (i) By setting the large gear 41 and the small gear 42 to mesh with the upper rack 5 and the lower rack 711 respectively, when the upper rail 1 is pushed to slide, the upper rack 5 drives the large gear 41 to rotate, the large gear 41 transmits to the small gear 42, and the small gear 42 slides on the lower rack 711, thereby realizing the synchronous sliding of the upper rail 1 and the middle rail 2; in addition, by reserving the reset gap between the large gear 41 and the lower rack 711 and between the small gear 42 and the upper rack 5, when the slide rail is dropped during transportation or improperly installed, the large gear 41 and the small gear 42 have displacement space, avoiding direct hard impact between the gear and the rack and causing gear breakage, thereby improving the service life of the product.

[0039] (ii) By setting a hook 431 on the gear sleeve 43 to support the lower rack 711, misalignment between the lower rack 711 and the pinion 42 is avoided, ensuring that the pinion 42 and the lower rack 711 are always in meshing state, thereby ensuring the normal sliding of the slide rail and improving its reliability.

[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0041] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0043] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A novel gear assembly for a slide rail, characterized in that, It is positioned on the middle rail and includes: The large gear is used to mesh with the rack on the upper rail for transmission; The pinion is used to mesh with the rack on the lower rail for transmission; the pinion is provided with a convex shaft, and the large gear is sleeved on the convex shaft to achieve transmission engagement; A gear sleeve is used to install on the middle rail; both the large gear and the small gear are placed inside the gear sleeve and the small gear is rotatably engaged with the gear sleeve. There are reset gaps between the large gear and the lower rack, and between the small gear and the upper rack.

2. The novel gear assembly according to claim 1, characterized in that, The gear sleeve is provided with a hook, which is used to hook the lower rack so that the lower rack meshes with the pinion.

3. The novel gear assembly according to claim 1 or 2, characterized in that, The convex shaft is provided with a gear ring, and the large gear is provided with a sleeve hole adapted to the gear ring. The large gear is sleeved on the gear ring through the sleeve hole to realize the transmission connection.

4. The novel gear assembly according to claim 1 or 2, characterized in that, The gear sleeve has a shaft hole on its inner wall, and one end of the convex shaft is inserted into the shaft hole to form a rotational fit.

5. The novel gear assembly according to claim 1 or 2, characterized in that, The inner wall of the gear sleeve is provided with a protruding post, and the pinion is provided with a concave hole into which the protruding post can be inserted to form a rotational fit.

6. A slide rail assembly, characterized in that, Includes an upper rail, a middle rail, a lower rail, and a novel gear assembly as described in any one of claims 1-5, wherein: The gear sleeve passes through the middle rail; The upper rail is slidably mounted on the middle rail; an upper rack is installed inside the upper rail, and the upper rack meshes with the large gear for transmission. The middle rail is slidably mounted on the lower rail; the lower rail is provided with a lower rack, and the pinion meshes with the lower rack for transmission.

7. The slide rail assembly according to claim 6, characterized in that, The gear sleeve and the middle rail are fixed together by a snap-fit ​​structure. The snap-fit ​​structure includes a snap hole and a buckle that snaps into the snap hole. One of the snap hole and the buckle is located on the middle rail, and the other is located on the gear sleeve.

8. The slide rail assembly according to claim 6, characterized in that, It also includes a first wheel frame assembly disposed on the middle rail. The first wheel frame assembly includes a first wheel frame and a plurality of first rollers that are rolled on the first wheel frame. The inner wall of the upper rail rolls against the plurality of first rollers to achieve sliding on the middle rail.

9. The slide rail assembly according to claim 6, characterized in that, It also includes a second wheel frame assembly disposed on the lower rail. The second wheel frame assembly includes a second wheel frame and a plurality of second rollers that are rolled on the second wheel frame. The inner wall of the middle rail rolls against the plurality of second rollers to achieve sliding on the lower rail.

10. The slide rail assembly according to claim 9, characterized in that, The lower rack is integrally formed on the second wheel frame.

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