CN113915233A

CN113915233A - Sliding rail assembly

Info

Publication number: CN113915233A
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: 2022-01-11
Anticipated expiration: 2040-07-07
Also published as: CN113915233B

Abstract

The invention relates to a slide 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 disclosure relates to sliding rails, and particularly to a sliding rail assembly with reliability.

Background

Fig. 1 shows a slide rail assembly 100 of the prior art. The slide rail assembly 100 includes a plurality of slide rails. Wherein a first rail 102, a second rail 104 are movably mounted in a channel 106 of the first rail 102, and a sliding assistance device 108 has a plurality of balls for assisting the longitudinal displacement of the second rail 104 relative to the first rail 102. Further, the sliding rail assembly 100 must meet the safety standards and quality control of some standards to meet the basic requirements of the market. For example, the slide assembly 100 must generally be subjected to a shock test to verify whether the slide of the slide assembly 100 is durable and capable of carrying a specific weight of a load (e.g., a server or a drawer, etc.). When the slide rail assembly 100 receives the shock test (fig. 1 only shows that a force F is applied to the slide rail assembly 100), if the slide rail assembly 100 receives the force F and the slide rails are separated from each other or bent, it represents that there is a concern about the safety and quality of the slide rail assembly 100. Fig. 1 shows that after the sliding rail assembly 100 receives the force F, a portion of the second rail 104 is laterally separated from or bent relative 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 thus the second rail 104 cannot be smoothly displaced relative to the first rail 102.

Therefore, how to develop a reliable slide rail assembly becomes an issue worth discussing.

Disclosure of Invention

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

According to an 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 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; the second rail is movably arranged in the channel of the first rail and can move relative to the first rail, and the second rail is provided with a limiting feature; wherein, when the second rail is at a predetermined position relative to the first rail, the limiting feature is used to prevent the second rail from moving transversely away from the first longitudinal wall of 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 limiting feature is located adjacent to the first end of the second rail.

Preferably, the first rail has a first end and a second end far away from the first end of the first rail; the limiting feature comprises a plurality of wall segments, and the wall segments define a space; when the second rail is at the predetermined position, the space of the limiting feature is used for accommodating at least one part of the first end 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.

Preferably, the slide rail assembly further comprises a first support seat disposed on the first wall adjacent to the first rail, and a second support seat disposed 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 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 for preventing the second rail from moving in the transverse direction.

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

According to another aspect of the present invention, a sliding 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 can move relative to the first rail, and the second rail is provided with a limiting feature; a first sliding aid device comprises a plurality of first balls and a plurality of second balls, and the plurality of first balls and the plurality of 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, one part of the limiting feature is adjacent to one side of the first longitudinal wall of the first rail, and a preset distance is reserved between one end of the first sliding assisting device and one first end of the first rail.

Drawings

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

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

Fig. 2 shows a slide rail assembly of the first embodiment of the invention including a combination of a first rail, a second rail and a third rail.

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

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

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

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

Fig. 7 is a partial schematic view illustrating the second rail of the slide rail assembly of the first embodiment of the invention at a predetermined position relative to the first rail.

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

Fig. 9 is a partial schematic view of a second rail according to a second embodiment of the present invention.

Detailed Description

As shown in fig. 2 and 3, a slide rail assembly 20 according to an embodiment of the present invention includes a first rail 22 and a second rail 24. Preferably, a third rail 26 is further 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 each other. It should be noted that in this embodiment, the X-axis direction is a longitudinal direction (or a length direction of the slide rail), the Y-axis direction is a transverse direction (or a lateral direction of the slide rail), and the Z-axis direction is a vertical direction (or a height direction of the slide 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 far 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 in implementation. 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 the implementation is not limited thereto. The second rail 24 is movably mounted in the channel 32 of the first rail 22 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 34 b.

Preferably, the track assembly 20 further includes at least one support seat, such as a first support seat 38a disposed adjacent to the first wall 28a of the first track 22 and a second support seat 38b disposed adjacent to the second wall 28b of the first track 22. Here, the first supporting seat 38a and the second supporting seat 38b are close to the first end 22a of the first rail 22 and located at the traffic lane opening of the channel 32 of the first rail 22.

Preferably, the slide rail assembly 20 further comprises at least one sliding assisting device, for example, a first sliding assisting device 40 and a second sliding assisting device 42 are movably mounted 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 facilitating the smoothness of the displacement of the second rail 24 relative to the first rail 22. The first sliding assisting device 40 and the second sliding assisting device 42 can be respectively used for supporting rail sections at different parts of the second rail 24, and the first sliding assisting device 40 and the second sliding assisting device 42 both include a plurality of first balls 44a and a plurality of second balls 44b (see fig. 6).

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

Preferably, the limit feature 46 is connected to the second rail 24. Here, the limiting feature 46 is fixed 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, but the embodiment is not limited thereto.

Preferably, the confinement feature 46 comprises a plurality of wall segments defining a space S. Here, the limiting feature 46 includes a first wall segment 48, a second wall segment 50, and a third wall segment 52. The first wall segment 48 is fixedly connected to the second longitudinal wall 36 of the second rail 24 through the at least one connection feature 47, the first wall segment 48, the second wall segment 50, and the third wall segment 52 are bent relative to each other, and the first wall segment 48, the second wall segment 50, and the third wall segment 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 fig. 5), but the implementation is not limited thereto.

As shown in fig. 3 and 6, the slide 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 located in the channel 23 of the third rail 26, and the first bead 54a and the second bead 54b both have a plurality of rolling members 56 for supporting the first wall 28a and the second wall 28b of the first rail 22, respectively. On the other hand, the first balls 44a of the first and second sliding aids 40 and 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 and 42 are supported between the second wall 28b of the first rail 22 and the fourth wall 34b of the second rail 24. The first support seat 38a is used for supporting the third wall 34a of the second rail 24, and the second support seat 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 located at a predetermined position P relative to the first rail 22, such as a retracted position, but not limited to the implementation. When the second rail 24 is at the predetermined position P relative to the first rail 22, a predetermined distance D (as shown in fig. 6) is provided between an end E (e.g., a front end) of the first sliding assistance device 40 and the first end 22a of the first rail 22, wherein the third wall 34a and the fourth wall 34b of the rail section of the second rail 24 within the predetermined distance D are not supported by the first ball 44a and the second ball 44b of the first sliding assistance device 40, so that when the slide rail assembly 20 receives a force F (as shown in fig. 7 and 8), the limiting feature 46 can prevent the second rail 24 from moving in a transverse direction T (or a lateral direction) away from the first longitudinal wall 30 of the first rail 22. For example, the limiting feature 46 can prevent the second rail 24 from disengaging from the channel 32 of the first rail 22 in the transverse direction T (or laterally) out of the channel 32 of the first rail 22 (as shown in fig. 8).

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 can be used to accommodate 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 of the first longitudinal wall 30 of the first rail 22 (as shown in fig. 8), in other words, a portion of the limiting feature 46 (e.g., the third wall segment 52) is adjacent to the side L of the first longitudinal wall 30 of the first rail 22, so as to prevent the second rail 24 from moving in the transverse direction T (or lateral direction). For example, once the force F is applied to the second rail 24 in the transverse direction T, the third wall segment 52 of the restriction feature 46 is adjacent to the side L of the first longitudinal wall 30 of the first rail 22, so that the third wall segment 52 of the restriction feature 46 and the side L of the first longitudinal wall 30 of the first rail 22 can contact each other to generate a blocking effect for preventing the second rail 24 from moving in the transverse direction T (or in the 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 support leg 62 extending into the first groove 58, and the fourth wall 34b of the second rail 24 has a second support leg 64 extending into the second groove 60 for preventing the second rail 24 from moving in the transverse direction T (or lateral direction). In view of the above, even though the third wall 34a and the fourth wall 34b of the portion of the second rail 24 within the predetermined distance D are supported by the first supporting seat 38a and the second supporting seat 38b respectively when the force F is applied to the second rail 24 in the transverse direction T (as shown in fig. 7 and 8), if the force F is large enough, the first supporting leg 62 of the third wall 34a and the second supporting leg 64 of the fourth wall 34b of the second rail 24 may be disengaged from the first groove 58 of the first supporting seat 38a and the second groove 60 of the second supporting seat 38b respectively in the transverse direction T (or in the lateral direction), so that the third wall 34a and the fourth wall 34b of the portion of the second rail 24 within the predetermined distance D may not be correctly positioned in the channel 32 of the first rail 22, and thus, the embodiment of the invention provides the limiting feature 46 to prevent the movable wall 34a and the fourth wall 34b of the portion of the second rail 24 away from the longitudinal wall 30 of the first rail 22 in the transverse direction T of the predetermined distance D As shown in fig. 7 and 8, the limiting feature 46 can ensure that the first supporting leg 62 of the third wall 34a and the second supporting leg 64 of the fourth wall 34b of the second rail 24 are not separated from the first groove 58 of the first supporting seat 38a and the second groove 60 of the second supporting seat 38b in the transverse direction T (or in the lateral direction), respectively, so as to ensure that the second rail 24 can be stably installed in the channel 32 of the first rail 22 without being influenced by the external force F when being installed in the channel 32 of the first rail 22, thereby providing the sliding rail assembly 20 with reliability and safety in use.

From the above description, it can be seen that the enhanced efficacy and advantages of the present invention are: at least two measures are provided for preventing the second rail 24 from moving in the transverse direction T relative to the first rail 22 when the second rail 24 is mounted in the channel 32 of the first rail 22 and the second rail 24 is in the predetermined position P relative to the first rail 22.

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

Although the present invention has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the above embodiments are illustrative only, and various equivalent changes and modifications may be made without departing from the spirit of the present invention, and therefore, it is intended to cover in the appended claims all such changes and modifications as fall within the true spirit of the invention.

Claims

1. A slide rail assembly comprises a first rail and a second rail, and is characterized in that:

the first rail comprises a first wall, a second wall and a first longitudinal wall, wherein the first wall, the second wall and the first longitudinal wall 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 move relative to the first rail, and the second rail is provided with a limiting feature;

wherein, when the second rail is at a predetermined position relative to the first rail, the limiting feature is used to prevent the second rail from moving transversely away from the first longitudinal wall of the first rail.

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

3. The slide rail 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 rail assembly of claim 1 wherein the first rail has a first end and a second end remote from the first end of the first rail; the limiting feature comprises a plurality of wall segments, and the wall segments define a space; when the second rail is at the predetermined position, the space of the limiting feature is used for accommodating at least one part of the first end 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.

5. The slide rail assembly of claim 1 further comprising a first support seat disposed on a first wall adjacent the first rail and a second support seat disposed on a second wall adjacent 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 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 for preventing the second rail from moving in the transverse direction.

6. The slide rail assembly of claim 5 further comprising at least one sliding aid, wherein the at least one sliding aid comprises a plurality of first balls and a plurality of second balls; the first balls are supported between the first wall of the first rail and the third wall of the second rail, and the second balls are supported between the second wall of the first rail and the fourth wall of the second rail.

7. A slide rail assembly comprises a first rail, a second rail and a first sliding-assistant device, and is characterized in that:

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 can move relative to the first rail, and the second rail is provided with a limiting feature; and

the first sliding-assistant device comprises a plurality of first balls and a plurality of second balls, and the plurality of first balls and the plurality of 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, one part of the limiting feature is adjacent to one side of the first longitudinal wall of the first rail, and a preset distance is reserved between one end of the first sliding assisting device and one first end of the first rail.

8. The slide rail assembly of claim 7 wherein the predetermined position is a stowed position.

9. The slide rail assembly of claim 7 further comprising a first support seat disposed on a first wall adjacent the first rail and a second support seat disposed on a second wall adjacent 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 connected between the third wall and the fourth wall; the third wall has a first support leg extending into the first groove, and the fourth wall has a second support leg extending into the second groove.

10. The slide rail assembly of claim 7 further comprising a second sliding aid, wherein the first sliding aid and the second sliding aid are respectively configured to support different portions of the second rail.