CN113915233B

CN113915233B - Sliding rail assembly

Info

Publication number: CN113915233B
Application number: CN202010644942.9A
Authority: CN
Inventors: 陈庚金; 杨顺和; 翁子承; 王俊强
Original assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Current assignee: King Slide Works Co Ltd; King Slide Technology Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2024-01-09
Anticipated expiration: 2040-07-07
Also published as: CN113915233A

Abstract

The invention relates to a sliding rail assembly, which comprises a first rail and a second rail. The second rail is longitudinally displaceable relative to the first rail and is provided with a limiting feature; the limiting feature is configured to prevent the second rail from moving laterally relative to the first rail when the second rail is in a predetermined position relative to the first rail.

Description

Sliding rail assembly

Technical Field

The present invention relates to a sliding rail, and more particularly, to a sliding rail assembly with reliability.

Background

Fig. 1 shows a prior art slide assembly 100. The track assembly 100 includes a plurality of tracks. Wherein a first rail 102, a second rail 104 are movably mounted within a channel 106 of the first rail 102, and a sliding aid 108 has a plurality of balls for facilitating longitudinal displacement of the second rail 104 relative to the first rail 102. Further, the rail assembly 100 must meet the safety specifications and quality control of some standards to meet the basic requirements of the market. For example, the track assembly 100 must typically be subjected to a shock test to verify that the tracks of the track assembly 100 are durable and capable of carrying a particular weight of a load (e.g., a server or drawer, etc.). When the rail assembly 100 receives the vibration test (fig. 1 shows that only a force F is applied to the rail assembly 100), if the rail assembly 100 receives the force F and the rails are separated or bent, the safety and quality of the rail assembly 100 are considered to be problematic. FIG. 1 shows that after the sliding rail assembly 100 receives the force F, a portion of the second rail 104 is laterally (or laterally) separated or bent with respect to the first rail 102, which may cause the second rail 104 to be incorrectly installed in the channel 106 of the first rail 102, and may cause the second rail 104 to be unable to smoothly displace with respect to the first rail 102.

Therefore, how to develop a reliable sliding rail assembly is a considerable issue.

Disclosure of Invention

The invention aims to provide a sliding rail assembly with reliability, so that the sliding rail assembly has the function of reliability when being positioned at a preset position.

According to one aspect of the present invention, a slide rail assembly includes a first rail and a second rail. The first rail comprises a first wall, a second wall and a first longitudinal wall connected between the first wall and the second wall, and the first wall, the second wall and the first longitudinal wall jointly define a channel; the second rail is movably arranged in the channel of the first rail and can be displaced relative to the first rail, and the second rail is provided with a limiting feature; wherein the limiting feature is configured to prevent lateral movement of the second rail away from the first longitudinal wall of the first rail when the second rail is in a predetermined position relative to the first rail.

Preferably, the predetermined position is a retracted position.

Preferably, the second rail has a first end and a second end remote from the first end of the second rail, and the restraining feature is located adjacent the first end of the second rail.

Preferably, the first rail has a first end and a second end remote from the first end of the first rail; the confinement feature comprises a plurality of wall segments, and the wall segments define a space; when the second rail is in the predetermined position, the space of the limiting feature is configured to receive at least a portion of the first end of the first rail, and one of the wall segments of the limiting feature is adjacent a side of the first longitudinal wall of the first rail to prevent movement of the second rail in the lateral direction.

Preferably, the sliding rail assembly further comprises a first supporting seat arranged on a first wall adjacent to the first rail, and a second supporting seat arranged on a second wall adjacent to the first rail; the first supporting seat is provided with a first groove, and the second supporting seat is provided with a second groove; the second rail comprises a third wall, a fourth wall and a second longitudinal wall which are connected between the third wall and the fourth wall; the third wall is provided with a first supporting leg extending into the first groove, and the fourth wall is provided with a second supporting leg extending into the second groove for preventing the second rail from moving transversely.

Preferably, the sliding rail assembly further comprises a sliding assisting device, and the sliding assisting device comprises a plurality of first balls and a plurality of second balls; the first balls are supported between a first wall of the first rail and a third wall of the second rail, and the second balls are supported between a second wall of the first rail and a fourth wall of the second rail.

According to another aspect of the present invention, a slide rail assembly includes a first rail and a second rail. The first rail comprises a first wall, a second wall and a first longitudinal wall connected between the first wall and the second wall; the second rail is displaceable relative to the first rail, and the second rail is provided with a limiting feature; the first sliding assisting device comprises a plurality of first balls and a plurality of second balls, and the first balls and the second balls are supported between the first rail and the second rail; when the second rail is at a preset position relative to the first rail, a part of the limiting feature is adjacent to one side edge of the first longitudinal wall of the first rail, and a preset distance is reserved between one end part of the first sliding assisting device and one first end part of the first rail.

Drawings

For further explanation and to demonstrate the above noted objects, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic view of a prior art slide assembly.

Fig. 2 shows a sliding rail assembly according to a first embodiment of the present invention, which includes a first rail, a second rail and a third rail.

Fig. 3 shows an exploded view of a slide assembly according to a first embodiment of the present invention.

Fig. 4 shows a partial schematic view of a second rail of the sliding rail assembly according to the first embodiment of the invention.

Fig. 5 shows a schematic cross-sectional view of a second rail of the sliding rail assembly according to the first embodiment of the invention.

Fig. 6 is a schematic view showing a sliding rail assembly in a retracted state according to a first embodiment of the present invention.

Fig. 7 is a partial schematic view showing a second rail of the sliding rail assembly according to the first embodiment of the invention in a predetermined position relative to the first rail.

Fig. 8 is a schematic cross-sectional view showing the second rail of the sliding rail assembly of the first embodiment of the present invention at the predetermined position relative to the first rail.

Fig. 9 shows a partial schematic view of a second rail of a second embodiment of the invention.

Detailed Description

As shown in fig. 2 and 3, a sliding rail assembly 20 according to the embodiment of the present invention includes a first rail 22 and a second rail 24. Preferably, a third rail 26 is also included, and the first rail 22 is movably mounted between the third rail 26 and the second rail 24. The first rail 22, the second rail 24, and the third rail 26 are longitudinally displaceable relative to one another. It should be noted that, in this embodiment, the X-axis direction is the longitudinal direction (or the length direction of the sliding rail), the Y-axis direction is the transverse direction (or the lateral direction of the sliding rail), and the Z-axis direction is the vertical direction (or the height direction of the sliding rail).

The first rail 22 is movably mounted in a channel 23 of the third rail 26. The first rail 22 has a first end 22a and a second end 22b remote from the first end 22a of the first rail 22. The first end 22a and the second end 22b of the first rail 22 are, for example, a front end and a rear end, but are not limited to this embodiment. The first rail 22 includes a first wall 28a, a second wall 28b and a first longitudinal wall 30 connected between the first wall 28a and the second wall 28b, and the first wall 28a, the second wall 28b and the first longitudinal wall 30 together define a channel 32.

The second rail 24 has a first end 24a and a second end 24b remote from the first end 24a of the second rail 24. The first end 24a and the second end 24b of the second rail 24 are, for example, a front end and a rear end, but are not limited to this embodiment. The second rail 24 is movably mounted to the channel 32 of the first rail 22 so as to be displaceable relative to the first rail 22. The second rail 24 includes a third wall 34a, a fourth wall 34b, and a second longitudinal wall 36 connected between the third wall 34a and the fourth wall 34b.

Preferably, the sliding rail assembly 20 further comprises at least one support base, such as a first support base 38a disposed adjacent to the first wall 28a of the first rail 22, and a second support base 38b disposed adjacent to the second wall 28b of the first rail 22. Here, the first support 38a and the second support 38b are close to the first end 22a of the first rail 22, and are located at the channel opening of the channel 32 of the first rail 22.

Preferably, the sliding rail assembly 20 further comprises at least one sliding assisting device, wherein a first sliding assisting device 40 and a second sliding assisting device 42 are movably installed in the channel 32 of the first rail 22, and the first sliding assisting device 40 and the second sliding assisting device 42 are used for assisting the smoothness of the second rail 24 moving relative to the first rail 22. The first sliding assisting device 40 and the second sliding assisting device 42 can be used for supporting rail sections of different portions of the second rail 24, and each of the first sliding assisting device 40 and the second sliding assisting device 42 includes a plurality of first balls 44a and a plurality of second balls 44b (see fig. 6 for this portion).

As shown in fig. 3, 4 and 5, the second rail 24 is provided with a limiting feature 46. In this embodiment, the limiting feature 46 is an additional member attached to the second rail 24.

Preferably, the limiting feature 46 is connected to the second rail 24. Here, the limiting feature 46 is fixedly coupled to the second longitudinal wall 36 of the second rail 24 by at least one connecting feature 47, and the limiting feature 46 is adjacent to the first end 24a of the second rail 24, for example, but not limited thereto.

Preferably, the limiting feature 46 comprises a plurality of wall segments, and the wall segments define a space S. Here, the limiting feature 46 is exemplified as comprising a first wall section 48, a second wall section 50, and a third wall section 52. The first wall section 48 is fixedly coupled to the second longitudinal wall 36 of the second rail 24 by the at least one connection feature 47, the first wall section 48, the second wall section 50 and the third wall section 52 are bent relative to each other, and the first wall section 48, the second wall section 50 and the third wall section 52 together define the space S. Here, the first wall section 48, the second wall section 50 and the third wall section 52 together form a U-shaped cross section (as shown in fig. 4 or 5), but is not limited in implementation.

As shown in fig. 3 and 6, the sliding rail assembly 20 further includes at least one third sliding assisting device for assisting the smoothness of the displacement of the first rail 22 relative to the third rail 26. Here, a first bead 54a and a second bead 54b are disposed in the channel 23 of the third rail 26, and the first bead 54a and the second bead 54b each have a plurality of rolling elements 56 for supporting the first wall 28a and the second wall 28b of the first rail 22, respectively, but the embodiment is not limited thereto. On the other hand, the first balls 44a of the first and second sliding aids 40, 42 are supported between the first wall 28a of the first rail 22 and the third wall 34a of the second rail 24, and the second balls 44b of the first and second sliding aids 40, 42 are supported between the second wall 28b of the first rail 22 and the fourth wall 34b of the second rail 24. And, the first support base 38a is used for supporting the third wall 34a of the second rail 24, and the second support base 38b is used for supporting the fourth wall 34b of the second rail 24.

As shown in fig. 6, 7 and 8, the second rail 24 can be at a predetermined position P, such as a retracted position, relative to the first rail 22, but is not limited in implementation. When the second rail 24 is at the predetermined position P relative to the first rail 22, an end E (e.g., front end) of the first slide assist device 40 is a predetermined distance D (shown in fig. 6) from the first end 22a of the first rail 22, wherein the third and fourth walls 34a, 34b of the rail section of the second rail 24 within the predetermined distance D are not supported by the first and second balls 44a, 44b of the first slide assist device 40, such that the limiting feature 46 prevents the second rail 24 from moving laterally (or laterally) away from the first longitudinal wall 30 of the first rail 22 when the slide rail assembly 20 receives a force F (shown in fig. 7 and 8). For example, the limiting feature 46 can prevent the second rail 24 from exiting from within the channel 32 of the first rail 22 to outside the channel 32 of the first rail 22 (as shown in fig. 8) toward the lateral direction T (or sideways).

Specifically, when the second rail 24 is in the predetermined position P relative to the first rail 22, the space S of the limiting feature 46 is configured to receive at least a portion of the first end 22a of the first rail 22, and one of the wall segments 48, 50, 52 (e.g., the third wall segment 52) of the limiting feature 46 is adjacent to a side L (as shown in fig. 8) of the first longitudinal wall 30 of the first rail 22, in other words, a portion (e.g., the third wall segment 52) of the limiting feature 46 is adjacent to a side L of the first longitudinal wall 30 of the first rail 22 to prevent the second rail 24 from moving laterally T (or sideways). For example, once the force F is applied to the second rail 24 in the transverse direction T, the third wall section 52 of the limiting feature 46 is adjacent to the side L of the first longitudinal wall 30 of the first rail 22 such that the third wall section 52 of the limiting feature 46 and the side L of the first longitudinal wall 30 of the first rail 22 can contact each other to create a barrier to prevent movement of the second rail 24 in the transverse direction T (or lateral direction) relative to the first rail 22.

Further, the first support base 38a has a first groove 58, and the second support base 38b has a second groove 60; on the other hand, the third wall 34a of the second rail 24 has a first supporting leg 62 extending into the first groove 58, and the fourth wall 34b of the second rail 24 has a second supporting leg 64 extending into the second groove 60 for preventing the second rail 24 from moving in the lateral direction T (or lateral direction). As described above, once the force F is applied to the second rail 24 in the transverse direction T (as shown in fig. 7 and 8), even if the third wall 34a and the fourth wall 34b of a portion of the rail section of the second rail 24 within the predetermined distance D are supported by the first support base 38a and the second support base 38b, respectively, if the force F is large enough, the first support leg 62 of the third wall 34a and the second support leg 64 of the fourth wall 34b of the second rail 24 may still be separated from the first groove 58 of the first support base 38a and the second groove 60 of the second support base 38b, respectively, causing the third wall 34a and the fourth wall 34b of the rail section of the second rail 24 within the predetermined distance D to be not properly positioned within the channel 32 of the first rail 22, however, the present embodiment provides the limiting feature 46 to prevent the second rail 24 from being mounted in the transverse direction T (or laterally) to the second support leg 24 from being separated from the first groove 58 of the second rail 24a and the second groove 60 of the second rail 22, respectively, thereby ensuring that the first wall 34b is not properly positioned within the channel 32 of the first rail 22, and the channel 32 b is not allowed to be mounted to the second groove 32 b by the first groove 58 and the second groove 34b, respectively, as shown in the transverse direction F and the second groove 32.

From the above description, it can be seen that the enhancement effect and advantage of the present invention are: at least two protective measures are provided that are applicable to the second rail 24 being mounted in the channel 32 of the first rail 22, and to prevent the second rail 24 from moving in the lateral direction T relative to the first rail 22 when the second rail 24 is in the predetermined position P relative to the first rail 22.

Fig. 9 shows an embodiment of the second rail 24 according to another embodiment of the invention. Specifically, unlike the above embodiment in which the limiting feature 46 is an additional component attached to the second rail 24, the second rail 200 of this embodiment is directly integrated with the limiting feature 202, i.e., the second rail 200 is directly molded with the limiting feature 202.

While the invention has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the above embodiments are for illustration only, and that various equivalent changes and modifications may be made without departing from the spirit of the invention, and therefore, all changes and modifications to the above embodiments are intended to be within the scope of the claims of the present application as long as they come within the true spirit of the invention.

Claims

1. A sliding rail assembly comprises a first rail, a second rail and a third rail, wherein the first rail is movably arranged between the third rail and the second rail; the first rail, the second rail and the third rail being longitudinally displaceable relative to each other; the method is characterized in that:

the first rail comprises a first wall, a second wall and a first longitudinal wall which are connected between the first wall and the second wall, and the first wall, the second wall and the first longitudinal wall jointly define a channel; and

the second rail is movably arranged in the channel of the first rail and can be displaced relative to the first rail, and the second rail is provided with a limiting feature;

wherein the limiting feature is configured to prevent lateral movement of the second rail away from the first longitudinal wall of the first rail when the second rail is in a predetermined position relative to the first rail;

the first rail is provided with a first end part and a first end part, wherein the second end part is far away from the first end part of the first rail; the confinement feature comprises a plurality of wall segments, and the wall segments define a space; when the second rail is at the preset position, the space of the limiting feature is used for accommodating at least one part of the first end part of the first rail, and one of the wall sections of the limiting feature is adjacent to one side edge of the first longitudinal wall of the first rail so as to prevent the second rail from moving towards the transverse direction;

the first support seat is arranged on the first wall adjacent to the first rail, and the second support seat is arranged on the second wall adjacent to the first rail; the first supporting seat is provided with a first groove, and the second supporting seat is provided with a second groove; the second rail comprises a third wall, a fourth wall and a second longitudinal wall which are connected between the third wall and the fourth wall; the third wall is provided with a first supporting leg extending into the first groove, and the fourth wall is provided with a second supporting leg extending into the second groove for preventing the second rail from moving transversely.

2. The slide assembly of claim 1 wherein the predetermined position is a retracted position.

3. The slide assembly of claim 1 wherein the second rail has a first end and a second end distal from the first end of the second rail and the limiting feature is located adjacent the first end of the second rail.

4. The slide assembly of claim 1, further comprising at least one sliding aid comprising a plurality of first balls and a plurality of second balls; the first balls are supported between a first wall of the first rail and a third wall of the second rail, and the second balls are supported between a second wall of the first rail and a fourth wall of the second rail.

5. A sliding rail assembly comprises a first rail, a second rail, a third rail and a first sliding assisting device, wherein the first rail is movably arranged between the third rail and the second rail; the first rail, the second rail and the third rail being longitudinally displaceable relative to each other; the method is characterized in that:

the first rail comprises a first wall, a second wall and a first longitudinal wall which are connected between the first wall and the second wall, and the second rail comprises a third wall, a fourth wall and a second longitudinal wall which are connected between the third wall and the fourth wall;

the second rail is capable of being displaced relative to the first rail, and is provided with a limiting feature for preventing the second rail from moving transversely away from the first longitudinal wall of the first rail; and

the first sliding assisting device comprises a plurality of first balls and a plurality of second balls, and the first balls and the second balls are supported between the first rail and the second rail;

when the second rail is at a preset position relative to the first rail, a part of the limiting feature is adjacent to one side edge of the first longitudinal wall of the first rail, a preset distance is reserved between one end part of the first sliding assisting device and one first end part of the first rail, and a third wall and a fourth wall of a rail section of the second rail in the preset distance range cannot be supported by the first ball and the second ball of the first sliding assisting device;

the first support seat is arranged on the first wall adjacent to the first rail, and the second support seat is arranged on the second wall adjacent to the first rail; the first supporting seat is provided with a first groove, and the second supporting seat is provided with a second groove; the second rail comprises a third wall, a fourth wall and a second longitudinal wall which are connected between the third wall and the fourth wall; the third wall has a first supporting leg extending into the first groove, and the fourth wall has a second supporting leg extending into the second groove.

6. The slide assembly of claim 5 wherein the predetermined position is a retracted position.

7. The track assembly of claim 5, further comprising a second slide-assist device, wherein the first slide-assist device and the second slide-assist device are configured to support different sections of the second track.