CN112932117B - Slide rail assembly and its return device - Google Patents

Abstract

The invention relates to a slide rail assembly and a return device thereof. The slide rail assembly includes a first rail, a second rail, a return device and a connecting device. The return device is provided on the first rail and includes an elastic member and a movable member; the connecting device is provided on the second rail and includes a first connecting piece and a second connecting piece. When the second rail is displaced from an extended position to a retracted direction relative to the first rail, the second connecting piece contacts the movable component to drive the movable component from a second state to a first state. One state. Accordingly, the elastic force of the elastic member can be used to drive the second rail to a folded position.

Description

Slide rail assembly and its return device

Technical field

The present invention relates to a slide rail, in particular to a slide rail assembly with a self-closing function and a return device thereof.

Background technique

For example, US Patent Publication No. 5,207,781A discloses a closing device that can be used for a fixed part (cabinet or fixed rail) and a movable part (drawer or movable rail). The closing device includes a path provided on the fixed component, a tiltable component movable along the path, and a spring connecting the tiltable component; on the other hand, the movable component is provided with a pin. As can be seen from Figures 1 to 4 of the patent, when the movable part moves from a folded position to an opening direction to an extended position, the movable part can move the tiltable part from the path through the pin. A linear part is driven to an arc part. At this time, the spring is stretched in the opening direction and accumulates an elastic force. When the movable member is displaced from the extended position to a folding direction, the pin can be used to bring the tiltable member back from the arc portion to the linear portion so that the spring releases the elastic force to move the movable member Bring back the folded position.

However, as market demands vary, sometimes due to limitations in the use environment of the fixed part and the movable part, the closing device provided in the patent case cannot meet specific needs. Therefore, how to develop a different product becomes a an important issue.

Contents of the invention

The object of the present invention is to provide a slide rail assembly with a self-closing function and a return device thereof.

According to one aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a return device and a connecting device. The second rail is displaceable relative to the first rail; the return device is provided on the first rail, and the return device includes an elastic member and a movable member, wherein the movable member is provided with a first stopper and a second Stop; the connecting device is provided on the second rail, and the connecting device includes a first connecting piece and a second connecting piece; wherein, when the second rail moves from a closed position to an open position relative to the first rail During the process of directional displacement, the first connecting piece contacts the first stopper of the movable piece, so that the movable piece is driven from a first predetermined position to a second predetermined position, and the movable piece changes from a first state to a second predetermined position. Convert to a second state; wherein, when the movable member is in the second state, the first connecting member no longer contacts the first stop portion of the movable member, and the elastic member is located at the second predetermined position in response to the movable member An elastic force is generated, and the second rail can be displaced in the opening direction to an extended position relative to the first rail; wherein, when the second rail is displaced from the extended position to a closed direction relative to the first rail , the second connecting piece contacts the second stopper of the movable member to drive the movable member to return to the first state from the second state, and with the elastic force of the elastic member, the second The rail is driven to the folded position.

Preferably, the second rail is movably mounted to the first rail.

Preferably, the return device further includes a housing connected to the first rail, and the housing includes a chamber to accommodate the elastic member.

Preferably, the movable component includes a support part, and the elastic component is elastically loaded to the support part.

Preferably, the slide rail assembly further includes a positioning portion provided on one of the housing and the first rail, and the movable member is provided with a detent feature; when the movable member is in the second predetermined position , the movable part is locked to the positioning part through the locking feature.

Preferably, the housing has a backstop feature away from the positioning portion; the backstop feature is used to prevent the movable component in the first predetermined position from moving in the folding direction.

Preferably, a guide feature is provided adjacent to the first stop portion of the movable member; when the movable member is in the first state, the second rail is displaced from the extended position to the folding direction. The second connecting piece can be guided through the guide feature and contact the first blocking part of the movable part, so as to provide the second connecting piece with contact with the first blocking part when the second rail is displaced in the opening direction. The movable component can be driven to move in the opening direction to the second predetermined position.

Preferably, the return device is made of metal.

Preferably, the connecting device is made of metal.

Preferably, the return device and the connecting device are both made of stainless steel.

According to another aspect of the present invention, a slide rail assembly includes a first rail, a second rail, a return device and a connecting device. The second rail is displaceable relative to the first rail; the return device is provided on the first rail, and the return device includes an elastic member and a movable member, wherein the movable member is provided with a first stopper and a second Stop portion; the connecting device is provided on the second rail, and the connecting device includes a first connecting piece and a second connecting piece; wherein, a guide feature is provided adjacent to the first stopping portion of the movable member; wherein, When the movable part is in a first state, during the displacement of the second rail from an extended position to a retracted direction, the second connecting part can be guided through the guide feature and contact the third part of the movable part. A blocking part is used to provide that when the second rail is displaced in an opening direction, the second connecting member contacts the first blocking part to drive the movable part to be displaced in the opening direction until the movable part is in a second state. .

According to another aspect of the present invention, a return device includes an elastic member, a housing and a movable member. The housing includes a chamber to accommodate the elastic member, and the housing has a positioning portion; the movable member is movable relative to the housing and can be in one of a first state and a second state. The movable part includes a first stop part, a second stop part and a latch feature; wherein, the elastic part elastically supports the movable part; wherein, when the movable part is in the first state, the first stop part It is located at the same longitudinal level as the second stop portion; when the movable member moves in an opening direction relative to the housing to a predetermined position, the elastic member is compressed and generates an elastic force, and the movable member passes through the card The latch feature is locked to the positioning portion of the housing to be in the second state; wherein, when the movable member is in the second state, the first stopper and the second stopper are located at different longitudinal levels.

Description of the drawings

In order to further illustrate and confirm 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:

Figure 1 shows a schematic three-dimensional view of a slide rail assembly according to an embodiment of the present invention.

FIG. 2 shows an exploded schematic view of a slide rail assembly including a first rail, a second rail and a return device according to an embodiment of the present invention.

FIG. 3 shows a schematic diagram of a movable component of the return device according to the embodiment of the present invention.

FIG. 4 shows a schematic diagram of the return device disposed on the first rail of the slide rail assembly according to the embodiment of the present invention.

FIG. 5 shows a schematic diagram of the slide rail assembly in a folded state according to the embodiment of the present invention.

FIG. 6 shows a schematic diagram of the second rail at the slide rail assembly displacing in an opening direction relative to the first rail according to the embodiment of the present invention.

FIG. 7 shows a schematic diagram of the second rail of the slide rail assembly according to the embodiment of the present invention continuing to move in the opening direction to an extended position relative to the first rail.

FIG. 8 shows a schematic diagram of the second rail at the slide rail assembly displacing in a folding direction relative to the first rail according to the embodiment of the present invention.

FIG. 9 shows a schematic diagram of the second rail at the slide rail assembly according to the embodiment of the present invention continuing to displace in the folding direction relative to the first rail.

FIG. 10 shows a schematic diagram of the return device of the slide rail assembly according to the embodiment of the present invention in a failed state, and the second rail is displaced in the folding direction relative to the first rail.

Figure 11 shows that the return device of the slide rail assembly according to the embodiment of the present invention is in a failed state, and the second rail continues to be displaced in the retracting direction relative to the first rail, causing the second connecting member of the second rail to contact the first stop of the movable member. Schematic diagram of the department.

Detailed ways

As shown in FIGS. 1 and 2 , a slide rail assembly 20 according to the embodiment of the present invention includes a first rail 22 , a second rail 24 , a return device 26 and a connecting device 28 .

The first rail 22 includes a plurality of walls defining a longitudinal channel 30 , and the second rail 24 is movably mounted to the longitudinal channel 30 of the first rail 22 so as to be longitudinally displaceable relative to the first rail 22 . The connecting device 28 is disposed on the second rail 24 , and the connecting device 28 includes a first connecting piece 56 and a second connecting piece 58 .

As shown in Figures 2, 3 and 4, the return device 26 is disposed on the first rail 22, and the return device 26 includes an elastic member 32 and a movable member 34. Preferably, it also includes a housing 36 .

The housing 36 is connected to the first rail 22 . For example, the housing 36 can be fixed to the first rail 22 by riveting, snapping or screwing. Here, the housing 36 has a first connection feature 38 and a second connection feature 40 that can be respectively connected. Taking a first corresponding feature 42 and a second corresponding feature 44 fixed to the first rail 22 as an example, the first connecting feature 38 is fixed to the first corresponding feature 42 through a fixing piece 45 . The housing 36 includes a receiving chamber 46 for receiving the elastic member 32 . Preferably, the chamber 46 includes a longitudinal groove. The movable component 34 is movably mounted to the housing 36, and the movable component 34 is provided with a first stopper 48 and a second stopper 50. Preferably, it also includes a support part 52 and a latch feature 54. Preferably, the first blocking part 48 and the second blocking part 50 are respectively located at a front part and a rear part of the movable member 34, and a gap is defined between the first blocking part 48 and the second blocking part 50. space; the support portion 52 is elastically supported by the elastic member 32; the latch feature 54 is provided adjacent to the first stop portion 48.

Preferably, one of the housing 36 and the first rail 22 is provided with a positioning portion 60 . Here, it is taken as an example that the positioning portion 60 is provided on the housing 36, but the implementation is not limited.

Preferably, the housing 36 has a longitudinal path 62 and a bending path 64, the bending path 64 extends from the longitudinal path 62, and the bending path 64 is bent relative to the longitudinal path 62; wherein, the bending path 64 extends from the longitudinal path 62. The wall surface of the bending path 64 has a substantially arc-shaped profile, and the positioning portion 60 is defined by the wall surface of the bending path 64 . The movable component 34 can move relative to the housing 36 along the longitudinal path 62 and the bending path 64 .

Preferably, the first rail 22 and the housing 36 have rear blocking features, here a first rear blocking feature 66 and a second rear blocking feature 68 are taken as examples. The backstop features 66 and 68 are all away from the positioning portion 60 , and the positions of the backstop features 66 and 68 correspond to the locking features 54 of the movable component 34 . Among them, one of the first rear blocking feature 66 and the second rear blocking feature 68 can, for example, be used to prevent the movable component 34 in a first predetermined position P1 from moving in a folding direction D2.

As shown in Figure 5, the slide rail assembly 20 is in a folded state. The second rail 24 is in a folded position R relative to the first rail 22 . Wherein, the movable member 34 contacts the elastic member 32 through the support part 52, the movable member 34 is in the first predetermined position P1 relative to the housing 36, and the first connecting member 56 of the second rail 24 is connected to the second connecting member 34. The member 58 is located in the space between the first stop portion 48 and the second stop portion 50 of the movable member 34 .

Preferably, the movable part 34 can move along the longitudinal path 62 through the latch feature 54, and the movable part 34 can be supported by the longitudinal path 62 through the latch feature 54 to maintain a first state S1.

Preferably, when the movable member 34 is in the first state S1, the first blocking portion 48 and the second blocking portion 50 are located at substantially the same longitudinal level.

As shown in FIGS. 5 and 6 , when the second rail 24 is displaced relative to the first rail 22 from the folded position R toward an opening direction D1 , the first connecting member 56 contacts the movable member 34 . The first stopper 48 drives the movable member 34 from the first predetermined position P1 to the opening direction D1.

As shown in FIG. 7 , when the second rail 24 continues to move in the opening direction D1 relative to the first rail 22 , the movable member 34 is driven in the opening direction D1 relative to the housing 36 to a second predetermined position. Position P2, and the movable member 34 is deflected by an angle from the above-mentioned first state S1 and converted to a second state S2. When the movable member 34 is in the second state S2, the first connecting member 56 no longer contacts the first stop portion 48 of the movable member 34, and the elastic member 32 responds to the movable member 34 being located at the second predetermined position. The position P2 generates an elastic force F (for example, the elastic member 32 accumulates the elastic force F in the folding direction D2), and the second rail 24 can move to an extended position E relative to the first rail 22 in the opening direction D1. , so that the slide rail assembly 20 is in an extended state. Preferably, when the movable member 34 is in the second predetermined position P2, the movable member 34 is locked to the positioning portion 60 on the bending path 64 of the housing 36 through the locking feature 54.

Preferably, when the movable member 34 is in the second state S2, the first blocking portion 48 and the second blocking portion 50 are located at different longitudinal levels. For example, the first blocking portion 48 and the second blocking portion 50 are at different longitudinal levels. The portions 50 have a height difference from each other.

As shown in Figures 7, 8 and 9, when the second rail 24 is displaced relative to the first rail 22 from the extended position E to the retracting direction D2 to near the end of the stroke, through the second connection The member 58 contacts the second stop portion 50 of the movable member 34 to drive the movable member 34 from the second state S2 (shown in Figure 8) to the first state S1 (shown in Figure 9), so that The first blocking portion 48 of the movable member 34 is in contact with the first connecting member 56, and with the elastic force of the elastic member 32 (for example, the elastic member 32 releases the elastic force F toward the folding direction D2), the movable member 34 can be used to drive the second rail 24 in the folding direction D2 to the above-mentioned folding position R (refer to Figure 5 for this part).

It is worth mentioning that through the elastic force F of the elastic member 32 of the return device 26, and using the movable member 34 to respond to the elastic force F, the second rail 24 is driven in the folding direction D2 to the above-mentioned folding position R, that is, the so-called The slide rail self-closing function.

As shown in FIGS. 10 and 11 , when the self-closing function of the slide rail fails, that is, when the second rail 24 is in the above-mentioned extended position E relative to the first rail 22 , due to external force factors, the elastic member 32 The elastic force F may be released unexpectedly, causing the movable member 34 to be driven from the above-mentioned second predetermined position P2 to the folding direction D2 to a position (the position is, for example, substantially the same as the above-mentioned first predetermined position P1, But not limited to), so that the movable component 34 is in the first state S1. In this case, when the second rail 24 is displaced from the extending position E to the retracting direction D2 relative to the first rail 22 to near the end of the stroke, it does not have the slide rail self-closing function.

Furthermore, in this embodiment, a guide feature 70 is provided adjacent to the first stop portion 48 of the movable member 34, and the guide feature 70 is, for example, an inclined surface or an arc surface, but the implementation is not limited thereto. Preferably, the guide feature 70 and the first stop 48 are located on opposite sides of the front of the movable member 34 .

When the self-closing function of the slide rail fails, when the movable member 34 is in the first state S1 and the second rail 24 is displaced from the extended position E to the folding direction D2, the second rail 24 The connecting member 58 can be guided through the guide feature 70 (as shown in FIG. 10 ) and contact the first stop 48 of the movable member 34 (as shown in FIG. 11 ) to provide a secure position when the second rail 24 is again When moving in the opening direction D1, the second connecting member 58 contacts the first stopper 48 of the movable member 34 to drive the movable member 34 to move in the opening direction D1 to the second predetermined position P2 (this part can also be 7), the movable member 34 can be in the second state S2 again, so that the elastic member 32 generates the elastic force F in response to the movable member 34 being in the second predetermined position P2, so that it can recover The slide rail has a self-closing function. According to this arrangement, in the event of failure, the second rail 24 does not need to be completely folded into the first rail 22 , that is, there is still a predetermined distance L between the second rail 24 and the folded position of the first rail 22 . , the failure state can be released, and the slide rail can be pulled out again, which can avoid the risk of hand pinching at the front end of the slide rail due to forced pushing of the slide rail due to failure.

Preferably, the return device 26 and/or the connection device 28 are made of metal material, such as stainless steel. Therefore, it can withstand high temperatures and meet the requirements of the slide rail assembly 20 when used in a specific environment (such as a high temperature environment). need.

According to the above description, it can be seen that the improving effects and advantages of the present invention are:

1. The second rail 24 is provided with the first connecting piece 56 and the second connecting piece 58 . Among them, through the elastic force F of the elastic member 32 of the return device 26 and using the first stopper 48 of the movable member 34 to contact the first connecting member 56, the movable member 34 can fold the second rail 24 toward the The direction D2 drives it to the folded position R and has the so-called slide rail self-closing function. The second connecting member 58 contacts the first stopper 48 of the movable member 34 to drive the movable member 34 to move in the opening direction D1 to the second predetermined position P2, so that the movable member 34 assumes the second state. S2, the elastic member 32 generates the elastic force F in response to the movable member 34 being in the second predetermined position P2, thereby restoring the self-closing function of the slide rail.

2. When the movable member 34 is in the first state S1, the first stop portion 48 and the second stop portion 50 are located at the same longitudinal level; when the movable member 34 is in the second state S2, the first stop portion 48 is at the same longitudinal level as the second stop portion 50. The blocking portion 48 and the second blocking portion 50 are located at different longitudinal levels.

3. The elastic member 32 is compressed in response to the movable member 34 moving in the opening direction D1 until the movable member 34 is in the second predetermined position P2 relative to the housing 36 to generate the elastic force F. Therefore, compared with the The spring in the known technology is stretched in the opening direction (the spring may be easily broken after being used for a long time in a stretched state) and accumulates elastic force. The principle of the elastic member 32 in the embodiment of this case accumulating the elastic force F in a compressed manner is applied in The return device 26 allows the return device 26 to have a better service life.

4. The return device 26 and/or the connection device 28 are made of metal, and therefore can withstand high temperatures and meet the requirements of the slide rail assembly 20 in specific environments.

5. When the self-closing function of the slide rail of the return device 26 fails, the guide feature 70 can be used to help the second connector 58 to be guided through the guide feature 70 (as shown in Figure 10) And contact the first stopper 48 of the movable part 34 (as shown in FIG. 11), so as to provide a third stopper 48 (as shown in FIG. 11) that contacts the movable part 34 through the second connecting part 58 when the second rail 24 is displaced in the opening direction D1. A stop portion 48 can drive the movable member 34 to move in the opening direction D1 to the second predetermined position P2 (this part can also be shown in FIG. 7 ), so that the movable member 34 is in the second state S2 again. The elastic member 32 is caused to generate the elastic force F in response to the movable member 34 being in the second predetermined position P2, thereby restoring the self-closing function of the slide rail.

6. The operation method of releasing the failure can avoid forcing the slide rail due to failure, which may cause the risk of hand pinching at the front end of the slide rail.

Although the present invention has been described with reference to the present specific embodiments, those of ordinary skill in the art will realize that the above embodiments are only used to illustrate the present invention, and may also be made without departing from the spirit of the invention. Various equivalent changes and modifications, therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present invention, they will fall within the scope of the claims of this application.

Claims (15)

1. The utility model provides a slide rail assembly, includes a first rail, a second rail, a regression device and a connecting device, its characterized in that:

the second rail is displaceable relative to the first rail;

the return device is arranged on the first rail and comprises an elastic piece and a movable piece, wherein the movable piece is provided with a first blocking part and a second blocking part; and

the connecting device is arranged on the second rail and comprises a first connecting piece and a second connecting piece;

when the second rail is at a folding position relative to the first rail and the movable piece is at a first preset position, the first connecting piece and the second connecting piece are positioned in a space between the first blocking part and the second blocking part of the movable piece;

when the second rail moves from the folding position to an opening direction relative to the first rail, the first connecting piece contacts the first blocking part of the movable piece, so that the movable piece is driven to a second preset position from the first preset position, and the movable piece is converted into a second state from a first state;

when the movable piece is in the second state, the first connecting piece is not contacted with the first blocking part of the movable piece any more, the elastic piece is compressed and generates elastic force in response to the movable piece being positioned at the second preset position, and the second rail can move to an extending position in the opening direction relative to the first rail;

when the second rail moves from the extending position to a folding direction relative to the first rail, the second connecting piece contacts the second blocking part of the movable piece to drive the movable piece to recover to the first state from the second state, and the elastic force of the elastic piece is used for driving the second rail to the folding position.

2. The slide assembly of claim 1 wherein the second rail is movably mounted to the first rail.

3. The track assembly of claim 1, wherein the return device further comprises a housing coupled to the first track, and the housing comprises a chamber for receiving the resilient member.

4. The slide assembly of claim 3 wherein the moveable member includes a support portion and the resilient member is resiliently loaded onto the support portion.

5. The slide assembly of claim 3 further comprising a positioning portion disposed on one of the housing and the first rail, the movable member having a detent feature; when the movable piece is positioned at the second preset position, the movable piece is clamped to the positioning part through the clamping feature.

6. The slide assembly of claim 5 wherein the housing has a backstop feature remote from the detent; the backstop feature is used for preventing the movable piece at the first preset position from moving towards the folding direction.

7. The slide assembly of claim 1 wherein the first stop adjacent the moveable member is provided with a guide feature; when the movable piece is in the first state, the second connecting piece can be guided and contacted with the first blocking part of the movable piece through the guiding feature in the process of displacing the second rail from the extending position to the folding direction, and when the second rail is displaced to the opening direction, the movable piece can be driven to displace to the second preset position in the opening direction through the contact of the second connecting piece with the first blocking part.

8. The slide assembly of claim 1, wherein the return device comprises a metal material.

9. The slide assembly of claim 8 wherein the connecting means comprises a metallic material.

10. The skid assembly as set forth in claim 9, wherein said return means and said connecting means are made of stainless steel.

11. The utility model provides a slide rail assembly, includes a first rail, a second rail, a regression device and a connecting device, its characterized in that:

the second rail is displaceable relative to the first rail;

the return device is arranged on the first rail and comprises an elastic piece and a movable piece, wherein the movable piece is provided with a first blocking part and a second blocking part; and

the connecting device is arranged on the second rail and comprises a first connecting piece and a second connecting piece;

wherein, a guiding feature is arranged adjacent to the first blocking part of the movable part;

when the movable piece is in a first state, the second connecting piece can be guided by the guiding feature and contact with the first blocking part of the movable piece in the process of displacing the second rail from an extending position to a folding direction, so that the movable piece can be driven to displace in the opening direction by the contact of the second connecting piece with the first blocking part when the second rail is displaced to an opening direction until the movable piece is in a second state;

when the movable piece is at a preset position, the movable piece is in the second state, and the elastic piece is compressed and generates elastic force in response to the movable piece being at the preset position;

when the second rail moves from the folding position to an opening direction relative to the first rail, the first connecting piece contacts the first blocking part of the movable piece, so that the movable piece is driven to a second preset position from a first preset position, and the movable piece is converted into a second state from a first state; when the second rail is displaced from the extending position to a folding direction relative to the first rail, the second connecting piece contacts the second blocking part of the movable piece to drive the movable piece to recover to the first state from the second state, and the elastic force of the elastic piece is used for driving the second rail to the folding position.

12. The slide assembly of claim 11 wherein the second rail is movably mounted to the first rail.

13. The slide assembly of claim 11, wherein the return device further comprises a housing coupled to the first rail, and the housing comprises a chamber for receiving the resilient member.

14. The slide assembly of claim 13, wherein the movable member includes a support portion, and the resilient member is resiliently loaded onto the support portion.

15. The slide assembly of claim 13, further comprising a positioning portion disposed on one of the housing and the first rail, and the movable member is provided with a detent feature; when the movable piece is at the preset position, the movable piece is clamped to the positioning part through the clamping feature.